Auto commit, 1 new patch{es}.

[thirdparty/grsecurity-scrape.git] / test / grsecurity-3.0-3.16.3-201409180901.patch

diff --git a/Documentation/dontdiff b/Documentation/dontdiff
index 9de9813..1462492 100644
--- a/Documentation/dontdiff
+++ b/Documentation/dontdiff
@@ -3,9 +3,11 @@
 *.bc
 *.bin
 *.bz2
+*.c.[012]*.*
 *.cis
 *.cpio
 *.csp
+*.dbg
 *.dsp
 *.dvi
 *.elf
@@ -15,6 +17,7 @@
 *.gcov
 *.gen.S
 *.gif
+*.gmo
 *.grep
 *.grp
 *.gz
@@ -51,14 +54,17 @@
 *.tab.h
 *.tex
 *.ver
+*.vim
 *.xml
 *.xz
 *_MODULES
+*_reg_safe.h
 *_vga16.c
 *~
 \#*#
 *.9
-.*
+.[^g]*
+.gen*
 .*.d
 .mm
 53c700_d.h
@@ -72,9 +78,11 @@ Image
 Module.markers
 Module.symvers
 PENDING
+PERF*
 SCCS
 System.map*
 TAGS
+TRACEEVENT-CFLAGS
 aconf
 af_names.h
 aic7*reg.h*
@@ -83,6 +91,7 @@ aic7*seq.h*
 aicasm
 aicdb.h*
 altivec*.c
+ashldi3.S
 asm-offsets.h
 asm_offsets.h
 autoconf.h*
@@ -95,32 +104,40 @@ bounds.h
 bsetup
 btfixupprep
 build
+builtin-policy.h
 bvmlinux
 bzImage*
 capability_names.h
 capflags.c
 classlist.h*
+clut_vga16.c
+common-cmds.h
 comp*.log
 compile.h*
 conf
 config
 config-*
 config_data.h*
+config.c
 config.mak
 config.mak.autogen
+config.tmp
 conmakehash
 consolemap_deftbl.c*
 cpustr.h
 crc32table.h*
 cscope.*
 defkeymap.c
+devicetable-offsets.h
 devlist.h*
 dnotify_test
 docproc
 dslm
+dtc-lexer.lex.c
 elf2ecoff
 elfconfig.h*
 evergreen_reg_safe.h
+exception_policy.conf
 fixdep
 flask.h
 fore200e_mkfirm
@@ -128,12 +145,15 @@ fore200e_pca_fw.c*
 gconf
 gconf.glade.h
 gen-devlist
+gen-kdb_cmds.c
 gen_crc32table
 gen_init_cpio
 generated
 genheaders
 genksyms
 *_gray256.c
+hash
+hid-example
 hpet_example
 hugepage-mmap
 hugepage-shm
@@ -148,14 +168,14 @@ int32.c
 int4.c
 int8.c
 kallsyms
-kconfig
+kern_constants.h
 keywords.c
 ksym.c*
 ksym.h*
 kxgettext
 lex.c
 lex.*.c
-linux
+lib1funcs.S
 logo_*.c
 logo_*_clut224.c
 logo_*_mono.c
@@ -165,14 +185,15 @@ mach-types.h
 machtypes.h
 map
 map_hugetlb
-media
 mconf
+mdp
 miboot*
 mk_elfconfig
 mkboot
 mkbugboot
 mkcpustr
 mkdep
+mkpiggy
 mkprep
 mkregtable
 mktables
@@ -188,6 +209,8 @@ oui.c*
 page-types
 parse.c
 parse.h
+parse-events*
+pasyms.h
 patches*
 pca200e.bin
 pca200e_ecd.bin2
@@ -197,6 +220,7 @@ perf-archive
 piggyback
 piggy.gzip
 piggy.S
+pmu-*
 pnmtologo
 ppc_defs.h*
 pss_boot.h
@@ -206,7 +230,12 @@ r200_reg_safe.h
 r300_reg_safe.h
 r420_reg_safe.h
 r600_reg_safe.h
+randomize_layout_hash.h
+randomize_layout_seed.h
+realmode.lds
+realmode.relocs
 recordmcount
+regdb.c
 relocs
 rlim_names.h
 rn50_reg_safe.h
@@ -216,8 +245,12 @@ series
 setup
 setup.bin
 setup.elf
+signing_key*
+size_overflow_hash.h
 sImage
+slabinfo
 sm_tbl*
+sortextable
 split-include
 syscalltab.h
 tables.c
@@ -227,6 +260,7 @@ tftpboot.img
 timeconst.h
 times.h*
 trix_boot.h
+user_constants.h
 utsrelease.h*
 vdso-syms.lds
 vdso.lds
@@ -238,13 +272,17 @@ vdso32.lds
 vdso32.so.dbg
 vdso64.lds
 vdso64.so.dbg
+vdsox32.lds
+vdsox32-syms.lds
 version.h*
 vmImage
 vmlinux
 vmlinux-*
 vmlinux.aout
 vmlinux.bin.all
+vmlinux.bin.bz2
 vmlinux.lds
+vmlinux.relocs
 vmlinuz
 voffset.h
 vsyscall.lds
@@ -252,9 +290,12 @@ vsyscall_32.lds
 wanxlfw.inc
 uImage
 unifdef
+utsrelease.h
 wakeup.bin
 wakeup.elf
 wakeup.lds
+x509*
 zImage*
 zconf.hash.c
+zconf.lex.c
 zoffset.h
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index b7fa2f5..90cd9f8 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1138,6 +1138,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			Format: <unsigned int> such that (rxsize & ~0x1fffc0) == 0.
 			Default: 1024
 
+	grsec_proc_gid= [GRKERNSEC_PROC_USERGROUP] Chooses GID to
+			ignore grsecurity's /proc restrictions
+
+
 	hashdist=	[KNL,NUMA] Large hashes allocated during boot
 			are distributed across NUMA nodes.  Defaults on
 			for 64-bit NUMA, off otherwise.
@@ -2141,6 +2145,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			noexec=on: enable non-executable mappings (default)
 			noexec=off: disable non-executable mappings
 
+	nopcid		[X86-64]
+			Disable PCID (Process-Context IDentifier) even if it
+			is supported by the processor.
+
 	nosmap		[X86]
 			Disable SMAP (Supervisor Mode Access Prevention)
 			even if it is supported by processor.
@@ -2418,6 +2426,25 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			the specified number of seconds.  This is to be used if
 			your oopses keep scrolling off the screen.
 
+	pax_nouderef	[X86] disables UDEREF.  Most likely needed under certain
+			virtualization environments that don't cope well with the
+			expand down segment used by UDEREF on X86-32 or the frequent
+			page table updates on X86-64.
+
+	pax_sanitize_slab=
+			0/1 to disable/enable slab object sanitization (enabled by
+			default).
+
+	pax_softmode=	0/1 to disable/enable PaX softmode on boot already.
+
+	pax_extra_latent_entropy
+			Enable a very simple form of latent entropy extraction
+			from the first 4GB of memory as the bootmem allocator
+			passes the memory pages to the buddy allocator.
+
+	pax_weakuderef	[X86-64] enables the weaker but faster form of UDEREF
+			when the processor supports PCID.
+
 	pcbit=		[HW,ISDN]
 
 	pcd.		[PARIDE]
diff --git a/Documentation/networking/filter.txt b/Documentation/networking/filter.txt
index ee78eba..a06b48d 100644
--- a/Documentation/networking/filter.txt
+++ b/Documentation/networking/filter.txt
@@ -277,11 +277,10 @@ Possible BPF extensions are shown in the following table:
   mark                                  skb->mark
   queue                                 skb->queue_mapping
   hatype                                skb->dev->type
-  rxhash                                skb->hash
+  rxhash                                skb->rxhash
   cpu                                   raw_smp_processor_id()
   vlan_tci                              vlan_tx_tag_get(skb)
   vlan_pr                               vlan_tx_tag_present(skb)
-  rand                                  prandom_u32()
 
 These extensions can also be prefixed with '#'.
 Examples for low-level BPF:
@@ -309,18 +308,6 @@ Examples for low-level BPF:
   ret #-1
   drop: ret #0
 
-** icmp random packet sampling, 1 in 4
-  ldh [12]
-  jne #0x800, drop
-  ldb [23]
-  jneq #1, drop
-  # get a random uint32 number
-  ld rand
-  mod #4
-  jneq #1, drop
-  ret #-1
-  drop: ret #0
-
 ** SECCOMP filter example:
 
   ld [4]                  /* offsetof(struct seccomp_data, arch) */
@@ -559,456 +546,6 @@ ffffffffa0069c8f + <x>:
 For BPF JIT developers, bpf_jit_disasm, bpf_asm and bpf_dbg provides a useful
 toolchain for developing and testing the kernel's JIT compiler.
 
-BPF kernel internals
---------------------
-Internally, for the kernel interpreter, a different instruction set
-format with similar underlying principles from BPF described in previous
-paragraphs is being used. However, the instruction set format is modelled
-closer to the underlying architecture to mimic native instruction sets, so
-that a better performance can be achieved (more details later). This new
-ISA is called 'eBPF' or 'internal BPF' interchangeably. (Note: eBPF which
-originates from [e]xtended BPF is not the same as BPF extensions! While
-eBPF is an ISA, BPF extensions date back to classic BPF's 'overloading'
-of BPF_LD | BPF_{B,H,W} | BPF_ABS instruction.)
-
-It is designed to be JITed with one to one mapping, which can also open up
-the possibility for GCC/LLVM compilers to generate optimized eBPF code through
-an eBPF backend that performs almost as fast as natively compiled code.
-
-The new instruction set was originally designed with the possible goal in
-mind to write programs in "restricted C" and compile into eBPF with a optional
-GCC/LLVM backend, so that it can just-in-time map to modern 64-bit CPUs with
-minimal performance overhead over two steps, that is, C -> eBPF -> native code.
-
-Currently, the new format is being used for running user BPF programs, which
-includes seccomp BPF, classic socket filters, cls_bpf traffic classifier,
-team driver's classifier for its load-balancing mode, netfilter's xt_bpf
-extension, PTP dissector/classifier, and much more. They are all internally
-converted by the kernel into the new instruction set representation and run
-in the eBPF interpreter. For in-kernel handlers, this all works transparently
-by using sk_unattached_filter_create() for setting up the filter, resp.
-sk_unattached_filter_destroy() for destroying it. The macro
-SK_RUN_FILTER(filter, ctx) transparently invokes eBPF interpreter or JITed
-code to run the filter. 'filter' is a pointer to struct sk_filter that we
-got from sk_unattached_filter_create(), and 'ctx' the given context (e.g.
-skb pointer). All constraints and restrictions from sk_chk_filter() apply
-before a conversion to the new layout is being done behind the scenes!
-
-Currently, the classic BPF format is being used for JITing on most of the
-architectures. Only x86-64 performs JIT compilation from eBPF instruction set,
-however, future work will migrate other JIT compilers as well, so that they
-will profit from the very same benefits.
-
-Some core changes of the new internal format:
-
-- Number of registers increase from 2 to 10:
-
-  The old format had two registers A and X, and a hidden frame pointer. The
-  new layout extends this to be 10 internal registers and a read-only frame
-  pointer. Since 64-bit CPUs are passing arguments to functions via registers
-  the number of args from eBPF program to in-kernel function is restricted
-  to 5 and one register is used to accept return value from an in-kernel
-  function. Natively, x86_64 passes first 6 arguments in registers, aarch64/
-  sparcv9/mips64 have 7 - 8 registers for arguments; x86_64 has 6 callee saved
-  registers, and aarch64/sparcv9/mips64 have 11 or more callee saved registers.
-
-  Therefore, eBPF calling convention is defined as:
-
-    * R0	- return value from in-kernel function, and exit value for eBPF program
-    * R1 - R5	- arguments from eBPF program to in-kernel function
-    * R6 - R9	- callee saved registers that in-kernel function will preserve
-    * R10	- read-only frame pointer to access stack
-
-  Thus, all eBPF registers map one to one to HW registers on x86_64, aarch64,
-  etc, and eBPF calling convention maps directly to ABIs used by the kernel on
-  64-bit architectures.
-
-  On 32-bit architectures JIT may map programs that use only 32-bit arithmetic
-  and may let more complex programs to be interpreted.
-
-  R0 - R5 are scratch registers and eBPF program needs spill/fill them if
-  necessary across calls. Note that there is only one eBPF program (== one
-  eBPF main routine) and it cannot call other eBPF functions, it can only
-  call predefined in-kernel functions, though.
-
-- Register width increases from 32-bit to 64-bit:
-
-  Still, the semantics of the original 32-bit ALU operations are preserved
-  via 32-bit subregisters. All eBPF registers are 64-bit with 32-bit lower
-  subregisters that zero-extend into 64-bit if they are being written to.
-  That behavior maps directly to x86_64 and arm64 subregister definition, but
-  makes other JITs more difficult.
-
-  32-bit architectures run 64-bit internal BPF programs via interpreter.
-  Their JITs may convert BPF programs that only use 32-bit subregisters into
-  native instruction set and let the rest being interpreted.
-
-  Operation is 64-bit, because on 64-bit architectures, pointers are also
-  64-bit wide, and we want to pass 64-bit values in/out of kernel functions,
-  so 32-bit eBPF registers would otherwise require to define register-pair
-  ABI, thus, there won't be able to use a direct eBPF register to HW register
-  mapping and JIT would need to do combine/split/move operations for every
-  register in and out of the function, which is complex, bug prone and slow.
-  Another reason is the use of atomic 64-bit counters.
-
-- Conditional jt/jf targets replaced with jt/fall-through:
-
-  While the original design has constructs such as "if (cond) jump_true;
-  else jump_false;", they are being replaced into alternative constructs like
-  "if (cond) jump_true; /* else fall-through */".
-
-- Introduces bpf_call insn and register passing convention for zero overhead
-  calls from/to other kernel functions:
-
-  Before an in-kernel function call, the internal BPF program needs to
-  place function arguments into R1 to R5 registers to satisfy calling
-  convention, then the interpreter will take them from registers and pass
-  to in-kernel function. If R1 - R5 registers are mapped to CPU registers
-  that are used for argument passing on given architecture, the JIT compiler
-  doesn't need to emit extra moves. Function arguments will be in the correct
-  registers and BPF_CALL instruction will be JITed as single 'call' HW
-  instruction. This calling convention was picked to cover common call
-  situations without performance penalty.
-
-  After an in-kernel function call, R1 - R5 are reset to unreadable and R0 has
-  a return value of the function. Since R6 - R9 are callee saved, their state
-  is preserved across the call.
-
-  For example, consider three C functions:
-
-  u64 f1() { return (*_f2)(1); }
-  u64 f2(u64 a) { return f3(a + 1, a); }
-  u64 f3(u64 a, u64 b) { return a - b; }
-
-  GCC can compile f1, f3 into x86_64:
-
-  f1:
-    movl $1, %edi
-    movq _f2(%rip), %rax
-    jmp  *%rax
-  f3:
-    movq %rdi, %rax
-    subq %rsi, %rax
-    ret
-
-  Function f2 in eBPF may look like:
-
-  f2:
-    bpf_mov R2, R1
-    bpf_add R1, 1
-    bpf_call f3
-    bpf_exit
-
-  If f2 is JITed and the pointer stored to '_f2'. The calls f1 -> f2 -> f3 and
-  returns will be seamless. Without JIT, __sk_run_filter() interpreter needs to
-  be used to call into f2.
-
-  For practical reasons all eBPF programs have only one argument 'ctx' which is
-  already placed into R1 (e.g. on __sk_run_filter() startup) and the programs
-  can call kernel functions with up to 5 arguments. Calls with 6 or more arguments
-  are currently not supported, but these restrictions can be lifted if necessary
-  in the future.
-
-  On 64-bit architectures all register map to HW registers one to one. For
-  example, x86_64 JIT compiler can map them as ...
-
-    R0 - rax
-    R1 - rdi
-    R2 - rsi
-    R3 - rdx
-    R4 - rcx
-    R5 - r8
-    R6 - rbx
-    R7 - r13
-    R8 - r14
-    R9 - r15
-    R10 - rbp
-
-  ... since x86_64 ABI mandates rdi, rsi, rdx, rcx, r8, r9 for argument passing
-  and rbx, r12 - r15 are callee saved.
-
-  Then the following internal BPF pseudo-program:
-
-    bpf_mov R6, R1 /* save ctx */
-    bpf_mov R2, 2
-    bpf_mov R3, 3
-    bpf_mov R4, 4
-    bpf_mov R5, 5
-    bpf_call foo
-    bpf_mov R7, R0 /* save foo() return value */
-    bpf_mov R1, R6 /* restore ctx for next call */
-    bpf_mov R2, 6
-    bpf_mov R3, 7
-    bpf_mov R4, 8
-    bpf_mov R5, 9
-    bpf_call bar
-    bpf_add R0, R7
-    bpf_exit
-
-  After JIT to x86_64 may look like:
-
-    push %rbp
-    mov %rsp,%rbp
-    sub $0x228,%rsp
-    mov %rbx,-0x228(%rbp)
-    mov %r13,-0x220(%rbp)
-    mov %rdi,%rbx
-    mov $0x2,%esi
-    mov $0x3,%edx
-    mov $0x4,%ecx
-    mov $0x5,%r8d
-    callq foo
-    mov %rax,%r13
-    mov %rbx,%rdi
-    mov $0x2,%esi
-    mov $0x3,%edx
-    mov $0x4,%ecx
-    mov $0x5,%r8d
-    callq bar
-    add %r13,%rax
-    mov -0x228(%rbp),%rbx
-    mov -0x220(%rbp),%r13
-    leaveq
-    retq
-
-  Which is in this example equivalent in C to:
-
-    u64 bpf_filter(u64 ctx)
-    {
-        return foo(ctx, 2, 3, 4, 5) + bar(ctx, 6, 7, 8, 9);
-    }
-
-  In-kernel functions foo() and bar() with prototype: u64 (*)(u64 arg1, u64
-  arg2, u64 arg3, u64 arg4, u64 arg5); will receive arguments in proper
-  registers and place their return value into '%rax' which is R0 in eBPF.
-  Prologue and epilogue are emitted by JIT and are implicit in the
-  interpreter. R0-R5 are scratch registers, so eBPF program needs to preserve
-  them across the calls as defined by calling convention.
-
-  For example the following program is invalid:
-
-    bpf_mov R1, 1
-    bpf_call foo
-    bpf_mov R0, R1
-    bpf_exit
-
-  After the call the registers R1-R5 contain junk values and cannot be read.
-  In the future an eBPF verifier can be used to validate internal BPF programs.
-
-Also in the new design, eBPF is limited to 4096 insns, which means that any
-program will terminate quickly and will only call a fixed number of kernel
-functions. Original BPF and the new format are two operand instructions,
-which helps to do one-to-one mapping between eBPF insn and x86 insn during JIT.
-
-The input context pointer for invoking the interpreter function is generic,
-its content is defined by a specific use case. For seccomp register R1 points
-to seccomp_data, for converted BPF filters R1 points to a skb.
-
-A program, that is translated internally consists of the following elements:
-
-  op:16, jt:8, jf:8, k:32    ==>    op:8, dst_reg:4, src_reg:4, off:16, imm:32
-
-So far 87 internal BPF instructions were implemented. 8-bit 'op' opcode field
-has room for new instructions. Some of them may use 16/24/32 byte encoding. New
-instructions must be multiple of 8 bytes to preserve backward compatibility.
-
-Internal BPF is a general purpose RISC instruction set. Not every register and
-every instruction are used during translation from original BPF to new format.
-For example, socket filters are not using 'exclusive add' instruction, but
-tracing filters may do to maintain counters of events, for example. Register R9
-is not used by socket filters either, but more complex filters may be running
-out of registers and would have to resort to spill/fill to stack.
-
-Internal BPF can used as generic assembler for last step performance
-optimizations, socket filters and seccomp are using it as assembler. Tracing
-filters may use it as assembler to generate code from kernel. In kernel usage
-may not be bounded by security considerations, since generated internal BPF code
-may be optimizing internal code path and not being exposed to the user space.
-Safety of internal BPF can come from a verifier (TBD). In such use cases as
-described, it may be used as safe instruction set.
-
-Just like the original BPF, the new format runs within a controlled environment,
-is deterministic and the kernel can easily prove that. The safety of the program
-can be determined in two steps: first step does depth-first-search to disallow
-loops and other CFG validation; second step starts from the first insn and
-descends all possible paths. It simulates execution of every insn and observes
-the state change of registers and stack.
-
-eBPF opcode encoding
---------------------
-
-eBPF is reusing most of the opcode encoding from classic to simplify conversion
-of classic BPF to eBPF. For arithmetic and jump instructions the 8-bit 'code'
-field is divided into three parts:
-
-  +----------------+--------+--------------------+
-  |   4 bits       |  1 bit |   3 bits           |
-  | operation code | source | instruction class  |
-  +----------------+--------+--------------------+
-  (MSB)                                      (LSB)
-
-Three LSB bits store instruction class which is one of:
-
-  Classic BPF classes:    eBPF classes:
-
-  BPF_LD    0x00          BPF_LD    0x00
-  BPF_LDX   0x01          BPF_LDX   0x01
-  BPF_ST    0x02          BPF_ST    0x02
-  BPF_STX   0x03          BPF_STX   0x03
-  BPF_ALU   0x04          BPF_ALU   0x04
-  BPF_JMP   0x05          BPF_JMP   0x05
-  BPF_RET   0x06          [ class 6 unused, for future if needed ]
-  BPF_MISC  0x07          BPF_ALU64 0x07
-
-When BPF_CLASS(code) == BPF_ALU or BPF_JMP, 4th bit encodes source operand ...
-
-  BPF_K     0x00
-  BPF_X     0x08
-
- * in classic BPF, this means:
-
-  BPF_SRC(code) == BPF_X - use register X as source operand
-  BPF_SRC(code) == BPF_K - use 32-bit immediate as source operand
-
- * in eBPF, this means:
-
-  BPF_SRC(code) == BPF_X - use 'src_reg' register as source operand
-  BPF_SRC(code) == BPF_K - use 32-bit immediate as source operand
-
-... and four MSB bits store operation code.
-
-If BPF_CLASS(code) == BPF_ALU or BPF_ALU64 [ in eBPF ], BPF_OP(code) is one of:
-
-  BPF_ADD   0x00
-  BPF_SUB   0x10
-  BPF_MUL   0x20
-  BPF_DIV   0x30
-  BPF_OR    0x40
-  BPF_AND   0x50
-  BPF_LSH   0x60
-  BPF_RSH   0x70
-  BPF_NEG   0x80
-  BPF_MOD   0x90
-  BPF_XOR   0xa0
-  BPF_MOV   0xb0  /* eBPF only: mov reg to reg */
-  BPF_ARSH  0xc0  /* eBPF only: sign extending shift right */
-  BPF_END   0xd0  /* eBPF only: endianness conversion */
-
-If BPF_CLASS(code) == BPF_JMP, BPF_OP(code) is one of:
-
-  BPF_JA    0x00
-  BPF_JEQ   0x10
-  BPF_JGT   0x20
-  BPF_JGE   0x30
-  BPF_JSET  0x40
-  BPF_JNE   0x50  /* eBPF only: jump != */
-  BPF_JSGT  0x60  /* eBPF only: signed '>' */
-  BPF_JSGE  0x70  /* eBPF only: signed '>=' */
-  BPF_CALL  0x80  /* eBPF only: function call */
-  BPF_EXIT  0x90  /* eBPF only: function return */
-
-So BPF_ADD | BPF_X | BPF_ALU means 32-bit addition in both classic BPF
-and eBPF. There are only two registers in classic BPF, so it means A += X.
-In eBPF it means dst_reg = (u32) dst_reg + (u32) src_reg; similarly,
-BPF_XOR | BPF_K | BPF_ALU means A ^= imm32 in classic BPF and analogous
-src_reg = (u32) src_reg ^ (u32) imm32 in eBPF.
-
-Classic BPF is using BPF_MISC class to represent A = X and X = A moves.
-eBPF is using BPF_MOV | BPF_X | BPF_ALU code instead. Since there are no
-BPF_MISC operations in eBPF, the class 7 is used as BPF_ALU64 to mean
-exactly the same operations as BPF_ALU, but with 64-bit wide operands
-instead. So BPF_ADD | BPF_X | BPF_ALU64 means 64-bit addition, i.e.:
-dst_reg = dst_reg + src_reg
-
-Classic BPF wastes the whole BPF_RET class to represent a single 'ret'
-operation. Classic BPF_RET | BPF_K means copy imm32 into return register
-and perform function exit. eBPF is modeled to match CPU, so BPF_JMP | BPF_EXIT
-in eBPF means function exit only. The eBPF program needs to store return
-value into register R0 before doing a BPF_EXIT. Class 6 in eBPF is currently
-unused and reserved for future use.
-
-For load and store instructions the 8-bit 'code' field is divided as:
-
-  +--------+--------+-------------------+
-  | 3 bits | 2 bits |   3 bits          |
-  |  mode  |  size  | instruction class |
-  +--------+--------+-------------------+
-  (MSB)                             (LSB)
-
-Size modifier is one of ...
-
-  BPF_W   0x00    /* word */
-  BPF_H   0x08    /* half word */
-  BPF_B   0x10    /* byte */
-  BPF_DW  0x18    /* eBPF only, double word */
-
-... which encodes size of load/store operation:
-
- B  - 1 byte
- H  - 2 byte
- W  - 4 byte
- DW - 8 byte (eBPF only)
-
-Mode modifier is one of:
-
-  BPF_IMM  0x00  /* classic BPF only, reserved in eBPF */
-  BPF_ABS  0x20
-  BPF_IND  0x40
-  BPF_MEM  0x60
-  BPF_LEN  0x80  /* classic BPF only, reserved in eBPF */
-  BPF_MSH  0xa0  /* classic BPF only, reserved in eBPF */
-  BPF_XADD 0xc0  /* eBPF only, exclusive add */
-
-eBPF has two non-generic instructions: (BPF_ABS | <size> | BPF_LD) and
-(BPF_IND | <size> | BPF_LD) which are used to access packet data.
-
-They had to be carried over from classic to have strong performance of
-socket filters running in eBPF interpreter. These instructions can only
-be used when interpreter context is a pointer to 'struct sk_buff' and
-have seven implicit operands. Register R6 is an implicit input that must
-contain pointer to sk_buff. Register R0 is an implicit output which contains
-the data fetched from the packet. Registers R1-R5 are scratch registers
-and must not be used to store the data across BPF_ABS | BPF_LD or
-BPF_IND | BPF_LD instructions.
-
-These instructions have implicit program exit condition as well. When
-eBPF program is trying to access the data beyond the packet boundary,
-the interpreter will abort the execution of the program. JIT compilers
-therefore must preserve this property. src_reg and imm32 fields are
-explicit inputs to these instructions.
-
-For example:
-
-  BPF_IND | BPF_W | BPF_LD means:
-
-    R0 = ntohl(*(u32 *) (((struct sk_buff *) R6)->data + src_reg + imm32))
-    and R1 - R5 were scratched.
-
-Unlike classic BPF instruction set, eBPF has generic load/store operations:
-
-BPF_MEM | <size> | BPF_STX:  *(size *) (dst_reg + off) = src_reg
-BPF_MEM | <size> | BPF_ST:   *(size *) (dst_reg + off) = imm32
-BPF_MEM | <size> | BPF_LDX:  dst_reg = *(size *) (src_reg + off)
-BPF_XADD | BPF_W  | BPF_STX: lock xadd *(u32 *)(dst_reg + off16) += src_reg
-BPF_XADD | BPF_DW | BPF_STX: lock xadd *(u64 *)(dst_reg + off16) += src_reg
-
-Where size is one of: BPF_B or BPF_H or BPF_W or BPF_DW. Note that 1 and
-2 byte atomic increments are not supported.
-
-Testing
--------
-
-Next to the BPF toolchain, the kernel also ships a test module that contains
-various test cases for classic and internal BPF that can be executed against
-the BPF interpreter and JIT compiler. It can be found in lib/test_bpf.c and
-enabled via Kconfig:
-
-  CONFIG_TEST_BPF=m
-
-After the module has been built and installed, the test suite can be executed
-via insmod or modprobe against 'test_bpf' module. Results of the test cases
-including timings in nsec can be found in the kernel log (dmesg).
-
 Misc
 ----
 
@@ -1024,4 +561,3 @@ the underlying architecture.
 
 Jay Schulist <jschlst@samba.org>
 Daniel Borkmann <dborkman@redhat.com>
-Alexei Starovoitov <ast@plumgrid.com>
diff --git a/Makefile b/Makefile
index 9b25a83..e77c38a 100644
--- a/Makefile
+++ b/Makefile
@@ -303,8 +303,9 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
 
 HOSTCC       = gcc
 HOSTCXX      = g++
-HOSTCFLAGS   = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
-HOSTCXXFLAGS = -O2
+HOSTCFLAGS   = -Wall -W -Wmissing-prototypes -Wstrict-prototypes -Wno-unused-parameter -Wno-missing-field-initializers -O2 -fomit-frame-pointer -fno-delete-null-pointer-checks
+HOSTCFLAGS  += $(call cc-option, -Wno-empty-body)
+HOSTCXXFLAGS = -O2 -Wall -W -Wno-array-bounds
 
 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
 HOSTCFLAGS  += -Wno-unused-value -Wno-unused-parameter \
@@ -449,8 +450,8 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
 # Rules shared between *config targets and build targets
 
 # Basic helpers built in scripts/
-PHONY += scripts_basic
-scripts_basic:
+PHONY += scripts_basic gcc-plugins
+scripts_basic: gcc-plugins
 	$(Q)$(MAKE) $(build)=scripts/basic
 	$(Q)rm -f .tmp_quiet_recordmcount
 
@@ -621,6 +622,75 @@ else
 KBUILD_CFLAGS	+= -O2
 endif
 
+# Tell gcc to never replace conditional load with a non-conditional one
+KBUILD_CFLAGS	+= $(call cc-option,--param=allow-store-data-races=0)
+
+ifndef DISABLE_PAX_PLUGINS
+ifeq ($(call cc-ifversion, -ge, 0408, y), y)
+PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCXX)" "$(HOSTCXX)" "$(CC)")
+else
+PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCC)" "$(HOSTCXX)" "$(CC)")
+endif
+ifneq ($(PLUGINCC),)
+ifdef CONFIG_PAX_CONSTIFY_PLUGIN
+CONSTIFY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/constify_plugin.so -DCONSTIFY_PLUGIN
+endif
+ifdef CONFIG_PAX_MEMORY_STACKLEAK
+STACKLEAK_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/stackleak_plugin.so -DSTACKLEAK_PLUGIN
+STACKLEAK_PLUGIN_CFLAGS += -fplugin-arg-stackleak_plugin-track-lowest-sp=100
+endif
+ifdef CONFIG_KALLOCSTAT_PLUGIN
+KALLOCSTAT_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kallocstat_plugin.so
+endif
+ifdef CONFIG_PAX_KERNEXEC_PLUGIN
+KERNEXEC_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kernexec_plugin.so
+KERNEXEC_PLUGIN_CFLAGS += -fplugin-arg-kernexec_plugin-method=$(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD) -DKERNEXEC_PLUGIN
+KERNEXEC_PLUGIN_AFLAGS := -DKERNEXEC_PLUGIN
+endif
+ifdef CONFIG_GRKERNSEC_RANDSTRUCT
+RANDSTRUCT_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/randomize_layout_plugin.so -DRANDSTRUCT_PLUGIN
+ifdef CONFIG_GRKERNSEC_RANDSTRUCT_PERFORMANCE
+RANDSTRUCT_PLUGIN_CFLAGS += -fplugin-arg-randomize_layout_plugin-performance-mode
+endif
+endif
+ifdef CONFIG_CHECKER_PLUGIN
+ifeq ($(call cc-ifversion, -ge, 0406, y), y)
+CHECKER_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/checker_plugin.so -DCHECKER_PLUGIN
+endif
+endif
+COLORIZE_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/colorize_plugin.so
+ifdef CONFIG_PAX_SIZE_OVERFLOW
+SIZE_OVERFLOW_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/size_overflow_plugin/size_overflow_plugin.so -DSIZE_OVERFLOW_PLUGIN
+endif
+ifdef CONFIG_PAX_LATENT_ENTROPY
+LATENT_ENTROPY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/latent_entropy_plugin.so -DLATENT_ENTROPY_PLUGIN
+endif
+ifdef CONFIG_PAX_MEMORY_STRUCTLEAK
+STRUCTLEAK_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/structleak_plugin.so -DSTRUCTLEAK_PLUGIN
+endif
+GCC_PLUGINS_CFLAGS := $(CONSTIFY_PLUGIN_CFLAGS) $(STACKLEAK_PLUGIN_CFLAGS) $(KALLOCSTAT_PLUGIN_CFLAGS)
+GCC_PLUGINS_CFLAGS += $(KERNEXEC_PLUGIN_CFLAGS) $(CHECKER_PLUGIN_CFLAGS) $(COLORIZE_PLUGIN_CFLAGS)
+GCC_PLUGINS_CFLAGS += $(SIZE_OVERFLOW_PLUGIN_CFLAGS) $(LATENT_ENTROPY_PLUGIN_CFLAGS) $(STRUCTLEAK_PLUGIN_CFLAGS)
+GCC_PLUGINS_CFLAGS += $(RANDSTRUCT_PLUGIN_CFLAGS)
+GCC_PLUGINS_AFLAGS := $(KERNEXEC_PLUGIN_AFLAGS)
+export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGINS_AFLAGS CONSTIFY_PLUGIN LATENT_ENTROPY_PLUGIN_CFLAGS
+ifeq ($(KBUILD_EXTMOD),)
+gcc-plugins:
+	$(Q)$(MAKE) $(build)=tools/gcc
+else
+gcc-plugins: ;
+endif
+else
+gcc-plugins:
+ifeq ($(call cc-ifversion, -ge, 0405, y), y)
+	$(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.))
+else
+	$(Q)echo "warning, your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least"
+endif
+	$(Q)echo "PAX_MEMORY_STACKLEAK, constification, PAX_LATENT_ENTROPY and other features will be less secure.  PAX_SIZE_OVERFLOW will not be active."
+endif
+endif
+
 ifdef CONFIG_READABLE_ASM
 # Disable optimizations that make assembler listings hard to read.
 # reorder blocks reorders the control in the function
@@ -692,7 +762,7 @@ KBUILD_CFLAGS   += $(call cc-option, -fno-var-tracking-assignments)
 
 ifdef CONFIG_DEBUG_INFO
 KBUILD_CFLAGS	+= -g
-KBUILD_AFLAGS	+= -Wa,-gdwarf-2
+KBUILD_AFLAGS	+= -Wa,--gdwarf-2
 endif
 
 ifdef CONFIG_DEBUG_INFO_REDUCED
@@ -839,7 +909,7 @@ export mod_sign_cmd
 
 
 ifeq ($(KBUILD_EXTMOD),)
-core-y		+= kernel/ mm/ fs/ ipc/ security/ crypto/ block/
+core-y		+= kernel/ mm/ fs/ ipc/ security/ crypto/ block/ grsecurity/
 
 vmlinux-dirs	:= $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
 		     $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
@@ -888,6 +958,8 @@ endif
 
 # The actual objects are generated when descending,
 # make sure no implicit rule kicks in
+$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
 
 # Handle descending into subdirectories listed in $(vmlinux-dirs)
@@ -897,7 +969,7 @@ $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
 # Error messages still appears in the original language
 
 PHONY += $(vmlinux-dirs)
-$(vmlinux-dirs): prepare scripts
+$(vmlinux-dirs): gcc-plugins prepare scripts
 	$(Q)$(MAKE) $(build)=$@
 
 define filechk_kernel.release
@@ -940,10 +1012,13 @@ prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
 
 archprepare: archheaders archscripts prepare1 scripts_basic
 
+prepare0: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+prepare0: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
 prepare0: archprepare FORCE
 	$(Q)$(MAKE) $(build)=.
 
 # All the preparing..
+prepare: KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
 prepare: prepare0
 
 # Generate some files
@@ -1051,6 +1126,8 @@ all: modules
 # using awk while concatenating to the final file.
 
 PHONY += modules
+modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
 	$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
 	@$(kecho) '  Building modules, stage 2.';
@@ -1066,7 +1143,7 @@ modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
 
 # Target to prepare building external modules
 PHONY += modules_prepare
-modules_prepare: prepare scripts
+modules_prepare: gcc-plugins prepare scripts
 
 # Target to install modules
 PHONY += modules_install
@@ -1132,7 +1209,10 @@ MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
 		  Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
 		  signing_key.priv signing_key.x509 x509.genkey		\
 		  extra_certificates signing_key.x509.keyid		\
-		  signing_key.x509.signer include/linux/version.h
+		  signing_key.x509.signer include/linux/version.h	\
+		  tools/gcc/size_overflow_plugin/size_overflow_hash_aux.h \
+		  tools/gcc/size_overflow_plugin/size_overflow_hash.h \
+		  tools/gcc/randomize_layout_seed.h
 
 # clean - Delete most, but leave enough to build external modules
 #
@@ -1171,7 +1251,7 @@ distclean: mrproper
 	@find $(srctree) $(RCS_FIND_IGNORE) \
 		\( -name '*.orig' -o -name '*.rej' -o -name '*~' \
 		-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
-		-o -name '.*.rej' -o -name '*%'  -o -name 'core' \) \
+		-o -name '.*.rej' -o -name '*.so' -o -name '*%' -o -name 'core' \) \
 		-type f -print | xargs rm -f
 
 
@@ -1332,6 +1412,8 @@ PHONY += $(module-dirs) modules
 $(module-dirs): crmodverdir $(objtree)/Module.symvers
 	$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
 
+modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
 modules: $(module-dirs)
 	@$(kecho) '  Building modules, stage 2.';
 	$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
@@ -1471,17 +1553,21 @@ else
         target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
 endif
 
-%.s: %.c prepare scripts FORCE
+%.s: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+%.s: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
+%.s: %.c gcc-plugins prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
 %.i: %.c prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.o: %.c prepare scripts FORCE
+%.o: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+%.o: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
+%.o: %.c gcc-plugins prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
 %.lst: %.c prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.s: %.S prepare scripts FORCE
+%.s: %.S gcc-plugins prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
-%.o: %.S prepare scripts FORCE
+%.o: %.S gcc-plugins prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
 %.symtypes: %.c prepare scripts FORCE
 	$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
@@ -1491,11 +1577,15 @@ endif
 	$(cmd_crmodverdir)
 	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
 	$(build)=$(build-dir)
-%/: prepare scripts FORCE
+%/: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+%/: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
+%/: gcc-plugins prepare scripts FORCE
 	$(cmd_crmodverdir)
 	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
 	$(build)=$(build-dir)
-%.ko: prepare scripts FORCE
+%.ko: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
+%.ko: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
+%.ko: gcc-plugins prepare scripts FORCE
 	$(cmd_crmodverdir)
 	$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1)   \
 	$(build)=$(build-dir) $(@:.ko=.o)
diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
index ed60a1e..47f1a55 100644
--- a/arch/alpha/include/asm/atomic.h
+++ b/arch/alpha/include/asm/atomic.h
@@ -292,4 +292,14 @@ static inline long atomic64_dec_if_positive(atomic64_t *v)
 #define atomic_dec(v) atomic_sub(1,(v))
 #define atomic64_dec(v) atomic64_sub(1,(v))
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* _ALPHA_ATOMIC_H */
diff --git a/arch/alpha/include/asm/cache.h b/arch/alpha/include/asm/cache.h
index ad368a9..fbe0f25 100644
--- a/arch/alpha/include/asm/cache.h
+++ b/arch/alpha/include/asm/cache.h
@@ -4,19 +4,19 @@
 #ifndef __ARCH_ALPHA_CACHE_H
 #define __ARCH_ALPHA_CACHE_H
 
+#include <linux/const.h>
 
 /* Bytes per L1 (data) cache line. */
 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EV6)
-# define L1_CACHE_BYTES     64
 # define L1_CACHE_SHIFT     6
 #else
 /* Both EV4 and EV5 are write-through, read-allocate,
    direct-mapped, physical.
 */
-# define L1_CACHE_BYTES     32
 # define L1_CACHE_SHIFT     5
 #endif
 
+#define L1_CACHE_BYTES     (_AC(1,UL) << L1_CACHE_SHIFT)
 #define SMP_CACHE_BYTES    L1_CACHE_BYTES
 
 #endif
diff --git a/arch/alpha/include/asm/elf.h b/arch/alpha/include/asm/elf.h
index 968d999..d36b2df 100644
--- a/arch/alpha/include/asm/elf.h
+++ b/arch/alpha/include/asm/elf.h
@@ -91,6 +91,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 
 #define ELF_ET_DYN_BASE		(TASK_UNMAPPED_BASE + 0x1000000)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL)
+
+#define PAX_DELTA_MMAP_LEN	(current->personality & ADDR_LIMIT_32BIT ? 14 : 28)
+#define PAX_DELTA_STACK_LEN	(current->personality & ADDR_LIMIT_32BIT ? 14 : 19)
+#endif
+
 /* $0 is set by ld.so to a pointer to a function which might be 
    registered using atexit.  This provides a mean for the dynamic
    linker to call DT_FINI functions for shared libraries that have
diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h
index aab14a0..b4fa3e7 100644
--- a/arch/alpha/include/asm/pgalloc.h
+++ b/arch/alpha/include/asm/pgalloc.h
@@ -29,6 +29,12 @@ pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
 	pgd_set(pgd, pmd);
 }
 
+static inline void
+pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+	pgd_populate(mm, pgd, pmd);
+}
+
 extern pgd_t *pgd_alloc(struct mm_struct *mm);
 
 static inline void
diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
index d8f9b7e..f6222fa 100644
--- a/arch/alpha/include/asm/pgtable.h
+++ b/arch/alpha/include/asm/pgtable.h
@@ -102,6 +102,17 @@ struct vm_area_struct;
 #define PAGE_SHARED	__pgprot(_PAGE_VALID | __ACCESS_BITS)
 #define PAGE_COPY	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW)
 #define PAGE_READONLY	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+# define PAGE_SHARED_NOEXEC	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE)
+# define PAGE_COPY_NOEXEC	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE)
+# define PAGE_READONLY_NOEXEC	__pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE)
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+#endif
+
 #define PAGE_KERNEL	__pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE)
 
 #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x))
diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c
index 2fd00b7..cfd5069 100644
--- a/arch/alpha/kernel/module.c
+++ b/arch/alpha/kernel/module.c
@@ -160,7 +160,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab,
 
 	/* The small sections were sorted to the end of the segment.
 	   The following should definitely cover them.  */
-	gp = (u64)me->module_core + me->core_size - 0x8000;
+	gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000;
 	got = sechdrs[me->arch.gotsecindex].sh_addr;
 
 	for (i = 0; i < n; i++) {
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 1402fcc..0b1abd2 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1298,10 +1298,11 @@ SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
    generic version except that we know how to honor ADDR_LIMIT_32BIT.  */
 
 static unsigned long
-arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
-		         unsigned long limit)
+arch_get_unmapped_area_1(struct file *filp, unsigned long addr, unsigned long len,
+		         unsigned long limit, unsigned long flags)
 {
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
 
 	info.flags = 0;
 	info.length = len;
@@ -1309,6 +1310,7 @@ arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
 	info.high_limit = limit;
 	info.align_mask = 0;
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 
@@ -1341,20 +1343,24 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	   merely specific addresses, but regions of memory -- perhaps
 	   this feature should be incorporated into all ports?  */
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(current->mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
-		addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
+		addr = arch_get_unmapped_area_1 (filp, PAGE_ALIGN(addr), len, limit, flags);
 		if (addr != (unsigned long) -ENOMEM)
 			return addr;
 	}
 
 	/* Next, try allocating at TASK_UNMAPPED_BASE.  */
-	addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
-					 len, limit);
+	addr = arch_get_unmapped_area_1 (filp, PAGE_ALIGN(current->mm->mmap_base), len, limit, flags);
+
 	if (addr != (unsigned long) -ENOMEM)
 		return addr;
 
 	/* Finally, try allocating in low memory.  */
-	addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
+	addr = arch_get_unmapped_area_1 (filp, PAGE_SIZE, len, limit, flags);
 
 	return addr;
 }
diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
index 98838a0..b304fb4 100644
--- a/arch/alpha/mm/fault.c
+++ b/arch/alpha/mm/fault.c
@@ -53,6 +53,124 @@ __load_new_mm_context(struct mm_struct *next_mm)
 	__reload_thread(pcb);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+/*
+ * PaX: decide what to do with offenders (regs->pc = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when patched PLT trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: patched PLT emulation #1 */
+		unsigned int ldah, ldq, jmp;
+
+		err = get_user(ldah, (unsigned int *)regs->pc);
+		err |= get_user(ldq, (unsigned int *)(regs->pc+4));
+		err |= get_user(jmp, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((ldah & 0xFFFF0000U) == 0x277B0000U &&
+		    (ldq & 0xFFFF0000U) == 0xA77B0000U &&
+		    jmp == 0x6BFB0000U)
+		{
+			unsigned long r27, addr;
+			unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16;
+			unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL;
+
+			addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL);
+			err = get_user(r27, (unsigned long *)addr);
+			if (err)
+				break;
+
+			regs->r27 = r27;
+			regs->pc = r27;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #2 */
+		unsigned int ldah, lda, br;
+
+		err = get_user(ldah, (unsigned int *)regs->pc);
+		err |= get_user(lda, (unsigned int *)(regs->pc+4));
+		err |= get_user(br, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((ldah & 0xFFFF0000U) == 0x277B0000U &&
+		    (lda & 0xFFFF0000U) == 0xA77B0000U &&
+		    (br & 0xFFE00000U) == 0xC3E00000U)
+		{
+			unsigned long addr = br | 0xFFFFFFFFFFE00000UL;
+			unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16;
+			unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL;
+
+			regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL);
+			regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2);
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation */
+		unsigned int br;
+
+		err = get_user(br, (unsigned int *)regs->pc);
+
+		if (!err && (br & 0xFFE00000U) == 0xC3800000U) {
+			unsigned int br2, ldq, nop, jmp;
+			unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver;
+
+			addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2);
+			err = get_user(br2, (unsigned int *)addr);
+			err |= get_user(ldq, (unsigned int *)(addr+4));
+			err |= get_user(nop, (unsigned int *)(addr+8));
+			err |= get_user(jmp, (unsigned int *)(addr+12));
+			err |= get_user(resolver, (unsigned long *)(addr+16));
+
+			if (err)
+				break;
+
+			if (br2 == 0xC3600000U &&
+			    ldq == 0xA77B000CU &&
+			    nop == 0x47FF041FU &&
+			    jmp == 0x6B7B0000U)
+			{
+				regs->r28 = regs->pc+4;
+				regs->r27 = addr+16;
+				regs->pc = resolver;
+				return 3;
+			}
+		}
+	} while (0);
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
 
 /*
  * This routine handles page faults.  It determines the address,
@@ -133,8 +251,29 @@ retry:
  good_area:
 	si_code = SEGV_ACCERR;
 	if (cause < 0) {
-		if (!(vma->vm_flags & VM_EXEC))
+		if (!(vma->vm_flags & VM_EXEC)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+			if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc)
+				goto bad_area;
+
+			up_read(&mm->mmap_sem);
+			switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+			case 2:
+			case 3:
+				return;
+#endif
+
+			}
+			pax_report_fault(regs, (void *)regs->pc, (void *)rdusp());
+			do_group_exit(SIGKILL);
+#else
 			goto bad_area;
+#endif
+
+		}
 	} else if (!cause) {
 		/* Allow reads even for write-only mappings */
 		if (!(vma->vm_flags & (VM_READ | VM_WRITE)))
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 290f02ee..a639059 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1787,7 +1787,7 @@ config ALIGNMENT_TRAP
 
 config UACCESS_WITH_MEMCPY
 	bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
-	depends on MMU
+	depends on MMU && !PAX_MEMORY_UDEREF
 	default y if CPU_FEROCEON
 	help
 	  Implement faster copy_to_user and clear_user methods for CPU
@@ -2051,6 +2051,7 @@ config XIP_PHYS_ADDR
 config KEXEC
 	bool "Kexec system call (EXPERIMENTAL)"
 	depends on (!SMP || PM_SLEEP_SMP)
+	depends on !GRKERNSEC_KMEM
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index 3040359..cf3bab0 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -18,17 +18,35 @@
 #include <asm/barrier.h>
 #include <asm/cmpxchg.h>
 
+#ifdef CONFIG_GENERIC_ATOMIC64
+#include <asm-generic/atomic64.h>
+#endif
+
 #define ATOMIC_INIT(i)	{ (i) }
 
 #ifdef __KERNEL__
 
+#define _ASM_EXTABLE(from, to)		\
+"	.pushsection __ex_table,\"a\"\n"\
+"	.align	3\n"			\
+"	.long	" #from ", " #to"\n"	\
+"	.popsection"
+
 /*
  * On ARM, ordinary assignment (str instruction) doesn't clear the local
  * strex/ldrex monitor on some implementations. The reason we can use it for
  * atomic_set() is the clrex or dummy strex done on every exception return.
  */
 #define atomic_read(v)	(*(volatile int *)&(v)->counter)
+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return v->counter;
+}
 #define atomic_set(v,i)	(((v)->counter) = (i))
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
 
 #if __LINUX_ARM_ARCH__ >= 6
 
@@ -44,6 +62,36 @@ static inline void atomic_add(int i, atomic_t *v)
 
 	prefetchw(&v->counter);
 	__asm__ __volatile__("@ atomic_add\n"
+"1:	ldrex	%1, [%3]\n"
+"	adds	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strex	%1, %0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "Ir" (i)
+	: "cc");
+}
+
+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
+{
+	unsigned long tmp;
+	int result;
+
+	prefetchw(&v->counter);
+	__asm__ __volatile__("@ atomic_add_unchecked\n"
 "1:	ldrex	%0, [%3]\n"
 "	add	%0, %0, %4\n"
 "	strex	%1, %0, [%3]\n"
@@ -63,6 +111,43 @@ static inline int atomic_add_return(int i, atomic_t *v)
 	prefetchw(&v->counter);
 
 	__asm__ __volatile__("@ atomic_add_return\n"
+"1:	ldrex	%1, [%3]\n"
+"	adds	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strex	%1, %0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "Ir" (i)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+	unsigned long tmp;
+	int result;
+
+	smp_mb();
+	prefetchw(&v->counter);
+
+	__asm__ __volatile__("@ atomic_add_return_unchecked\n"
 "1:	ldrex	%0, [%3]\n"
 "	add	%0, %0, %4\n"
 "	strex	%1, %0, [%3]\n"
@@ -84,6 +169,36 @@ static inline void atomic_sub(int i, atomic_t *v)
 
 	prefetchw(&v->counter);
 	__asm__ __volatile__("@ atomic_sub\n"
+"1:	ldrex	%1, [%3]\n"
+"	subs	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strex	%1, %0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "Ir" (i)
+	: "cc");
+}
+
+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
+{
+	unsigned long tmp;
+	int result;
+
+	prefetchw(&v->counter);
+	__asm__ __volatile__("@ atomic_sub_unchecked\n"
 "1:	ldrex	%0, [%3]\n"
 "	sub	%0, %0, %4\n"
 "	strex	%1, %0, [%3]\n"
@@ -103,11 +218,25 @@ static inline int atomic_sub_return(int i, atomic_t *v)
 	prefetchw(&v->counter);
 
 	__asm__ __volatile__("@ atomic_sub_return\n"
-"1:	ldrex	%0, [%3]\n"
-"	sub	%0, %0, %4\n"
+"1:	ldrex	%1, [%3]\n"
+"	subs	%0, %1, %4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strex	%1, %0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "Ir" (i)
 	: "cc");
@@ -152,12 +281,24 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 	__asm__ __volatile__ ("@ atomic_add_unless\n"
 "1:	ldrex	%0, [%4]\n"
 "	teq	%0, %5\n"
-"	beq	2f\n"
-"	add	%1, %0, %6\n"
+"	beq	4f\n"
+"	adds	%1, %0, %6\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strex	%2, %1, [%4]\n"
 "	teq	%2, #0\n"
 "	bne	1b\n"
-"2:"
+"4:"
+
+#ifdef CONFIG_PAX_REFCOUNT
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (oldval), "=&r" (newval), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "r" (u), "r" (a)
 	: "cc");
@@ -168,6 +309,28 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 	return oldval;
 }
 
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *ptr, int old, int new)
+{
+	unsigned long oldval, res;
+
+	smp_mb();
+
+	do {
+		__asm__ __volatile__("@ atomic_cmpxchg_unchecked\n"
+		"ldrex	%1, [%3]\n"
+		"mov	%0, #0\n"
+		"teq	%1, %4\n"
+		"strexeq %0, %5, [%3]\n"
+		    : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter)
+		    : "r" (&ptr->counter), "Ir" (old), "r" (new)
+		    : "cc");
+	} while (res);
+
+	smp_mb();
+
+	return oldval;
+}
+
 #else /* ARM_ARCH_6 */
 
 #ifdef CONFIG_SMP
@@ -186,7 +349,17 @@ static inline int atomic_add_return(int i, atomic_t *v)
 
 	return val;
 }
+
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+	return atomic_add_return(i, v);
+}
+
 #define atomic_add(i, v)	(void) atomic_add_return(i, v)
+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
+{
+	(void) atomic_add_return(i, v);
+}
 
 static inline int atomic_sub_return(int i, atomic_t *v)
 {
@@ -201,6 +374,10 @@ static inline int atomic_sub_return(int i, atomic_t *v)
 	return val;
 }
 #define atomic_sub(i, v)	(void) atomic_sub_return(i, v)
+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
+{
+	(void) atomic_sub_return(i, v);
+}
 
 static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 {
@@ -216,6 +393,11 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
 	return ret;
 }
 
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
+{
+	return atomic_cmpxchg(v, old, new);
+}
+
 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 {
 	int c, old;
@@ -229,13 +411,33 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 #endif /* __LINUX_ARM_ARCH__ */
 
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
 
 #define atomic_inc(v)		atomic_add(1, v)
+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	atomic_add_unchecked(1, v);
+}
 #define atomic_dec(v)		atomic_sub(1, v)
+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	atomic_sub_unchecked(1, v);
+}
 
 #define atomic_inc_and_test(v)	(atomic_add_return(1, v) == 0)
+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v) == 0;
+}
 #define atomic_dec_and_test(v)	(atomic_sub_return(1, v) == 0)
 #define atomic_inc_return(v)    (atomic_add_return(1, v))
+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v);
+}
 #define atomic_dec_return(v)    (atomic_sub_return(1, v))
 #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0)
 
@@ -246,6 +448,14 @@ typedef struct {
 	long long counter;
 } atomic64_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef struct {
+	long long counter;
+} atomic64_unchecked_t;
+#else
+typedef atomic64_t atomic64_unchecked_t;
+#endif
+
 #define ATOMIC64_INIT(i) { (i) }
 
 #ifdef CONFIG_ARM_LPAE
@@ -262,6 +472,19 @@ static inline long long atomic64_read(const atomic64_t *v)
 	return result;
 }
 
+static inline long long atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	long long result;
+
+	__asm__ __volatile__("@ atomic64_read_unchecked\n"
+"	ldrd	%0, %H0, [%1]"
+	: "=&r" (result)
+	: "r" (&v->counter), "Qo" (v->counter)
+	);
+
+	return result;
+}
+
 static inline void atomic64_set(atomic64_t *v, long long i)
 {
 	__asm__ __volatile__("@ atomic64_set\n"
@@ -270,6 +493,15 @@ static inline void atomic64_set(atomic64_t *v, long long i)
 	: "r" (&v->counter), "r" (i)
 	);
 }
+
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
+{
+	__asm__ __volatile__("@ atomic64_set_unchecked\n"
+"	strd	%2, %H2, [%1]"
+	: "=Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	);
+}
 #else
 static inline long long atomic64_read(const atomic64_t *v)
 {
@@ -284,6 +516,19 @@ static inline long long atomic64_read(const atomic64_t *v)
 	return result;
 }
 
+static inline long long atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	long long result;
+
+	__asm__ __volatile__("@ atomic64_read_unchecked\n"
+"	ldrexd	%0, %H0, [%1]"
+	: "=&r" (result)
+	: "r" (&v->counter), "Qo" (v->counter)
+	);
+
+	return result;
+}
+
 static inline void atomic64_set(atomic64_t *v, long long i)
 {
 	long long tmp;
@@ -298,6 +543,21 @@ static inline void atomic64_set(atomic64_t *v, long long i)
 	: "r" (&v->counter), "r" (i)
 	: "cc");
 }
+
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
+{
+	long long tmp;
+
+	prefetchw(&v->counter);
+	__asm__ __volatile__("@ atomic64_set_unchecked\n"
+"1:	ldrexd	%0, %H0, [%2]\n"
+"	strexd	%0, %3, %H3, [%2]\n"
+"	teq	%0, #0\n"
+"	bne	1b"
+	: "=&r" (tmp), "=Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
 #endif
 
 static inline void atomic64_add(long long i, atomic64_t *v)
@@ -309,6 +569,37 @@ static inline void atomic64_add(long long i, atomic64_t *v)
 	__asm__ __volatile__("@ atomic64_add\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	adds	%Q0, %Q0, %Q4\n"
+"	adcs	%R0, %R0, %R4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strexd	%1, %0, %H0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
+static inline void atomic64_add_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	long long result;
+	unsigned long tmp;
+
+	prefetchw(&v->counter);
+	__asm__ __volatile__("@ atomic64_add_unchecked\n"
+"1:	ldrexd	%0, %H0, [%3]\n"
+"	adds	%Q0, %Q0, %Q4\n"
 "	adc	%R0, %R0, %R4\n"
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
@@ -329,6 +620,44 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v)
 	__asm__ __volatile__("@ atomic64_add_return\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	adds	%Q0, %Q0, %Q4\n"
+"	adcs	%R0, %R0, %R4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"	mov	%H0, %H1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strexd	%1, %0, %H0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+
+	smp_mb();
+
+	return result;
+}
+
+static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	long long result;
+	unsigned long tmp;
+
+	smp_mb();
+
+	__asm__ __volatile__("@ atomic64_add_return_unchecked\n"
+"1:	ldrexd	%0, %H0, [%3]\n"
+"	adds	%Q0, %Q0, %Q4\n"
 "	adc	%R0, %R0, %R4\n"
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
@@ -351,6 +680,37 @@ static inline void atomic64_sub(long long i, atomic64_t *v)
 	__asm__ __volatile__("@ atomic64_sub\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	subs	%Q0, %Q0, %Q4\n"
+"	sbcs	%R0, %R0, %R4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
+"	strexd	%1, %0, %H0, [%3]\n"
+"	teq	%1, #0\n"
+"	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
+	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
+	: "r" (&v->counter), "r" (i)
+	: "cc");
+}
+
+static inline void atomic64_sub_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	long long result;
+	unsigned long tmp;
+
+	prefetchw(&v->counter);
+	__asm__ __volatile__("@ atomic64_sub_unchecked\n"
+"1:	ldrexd	%0, %H0, [%3]\n"
+"	subs	%Q0, %Q0, %Q4\n"
 "	sbc	%R0, %R0, %R4\n"
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
@@ -371,10 +731,25 @@ static inline long long atomic64_sub_return(long long i, atomic64_t *v)
 	__asm__ __volatile__("@ atomic64_sub_return\n"
 "1:	ldrexd	%0, %H0, [%3]\n"
 "	subs	%Q0, %Q0, %Q4\n"
-"	sbc	%R0, %R0, %R4\n"
+"	sbcs	%R0, %R0, %R4\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%0, %1\n"
+"	mov	%H0, %H1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"\n4:\n"
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "r" (i)
 	: "cc");
@@ -410,6 +785,31 @@ static inline long long atomic64_cmpxchg(atomic64_t *ptr, long long old,
 	return oldval;
 }
 
+static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, long long old,
+					long long new)
+{
+	long long oldval;
+	unsigned long res;
+
+	smp_mb();
+
+	do {
+		__asm__ __volatile__("@ atomic64_cmpxchg_unchecked\n"
+		"ldrexd		%1, %H1, [%3]\n"
+		"mov		%0, #0\n"
+		"teq		%1, %4\n"
+		"teqeq		%H1, %H4\n"
+		"strexdeq	%0, %5, %H5, [%3]"
+		: "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter)
+		: "r" (&ptr->counter), "r" (old), "r" (new)
+		: "cc");
+	} while (res);
+
+	smp_mb();
+
+	return oldval;
+}
+
 static inline long long atomic64_xchg(atomic64_t *ptr, long long new)
 {
 	long long result;
@@ -435,21 +835,35 @@ static inline long long atomic64_xchg(atomic64_t *ptr, long long new)
 static inline long long atomic64_dec_if_positive(atomic64_t *v)
 {
 	long long result;
-	unsigned long tmp;
+	u64 tmp;
 
 	smp_mb();
 	prefetchw(&v->counter);
 
 	__asm__ __volatile__("@ atomic64_dec_if_positive\n"
-"1:	ldrexd	%0, %H0, [%3]\n"
-"	subs	%Q0, %Q0, #1\n"
-"	sbc	%R0, %R0, #0\n"
+"1:	ldrexd	%1, %H1, [%3]\n"
+"	subs	%Q0, %Q1, #1\n"
+"	sbcs	%R0, %R1, #0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"	mov	%Q0, %Q1\n"
+"	mov	%R0, %R1\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	teq	%R0, #0\n"
-"	bmi	2f\n"
+"	bmi	4f\n"
 "	strexd	%1, %0, %H0, [%3]\n"
 "	teq	%1, #0\n"
 "	bne	1b\n"
-"2:"
+"4:\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter)
 	: "cc");
@@ -473,13 +887,25 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u)
 "	teq	%0, %5\n"
 "	teqeq	%H0, %H5\n"
 "	moveq	%1, #0\n"
-"	beq	2f\n"
+"	beq	4f\n"
 "	adds	%Q0, %Q0, %Q6\n"
-"	adc	%R0, %R0, %R6\n"
+"	adcs	%R0, %R0, %R6\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	bvc	3f\n"
+"2:	bkpt	0xf103\n"
+"3:\n"
+#endif
+
 "	strexd	%2, %0, %H0, [%4]\n"
 "	teq	%2, #0\n"
 "	bne	1b\n"
-"2:"
+"4:\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+	_ASM_EXTABLE(2b, 4b)
+#endif
+
 	: "=&r" (val), "+r" (ret), "=&r" (tmp), "+Qo" (v->counter)
 	: "r" (&v->counter), "r" (u), "r" (a)
 	: "cc");
@@ -492,10 +918,13 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u)
 
 #define atomic64_add_negative(a, v)	(atomic64_add_return((a), (v)) < 0)
 #define atomic64_inc(v)			atomic64_add(1LL, (v))
+#define atomic64_inc_unchecked(v)	atomic64_add_unchecked(1LL, (v))
 #define atomic64_inc_return(v)		atomic64_add_return(1LL, (v))
+#define atomic64_inc_return_unchecked(v)	atomic64_add_return_unchecked(1LL, (v))
 #define atomic64_inc_and_test(v)	(atomic64_inc_return(v) == 0)
 #define atomic64_sub_and_test(a, v)	(atomic64_sub_return((a), (v)) == 0)
 #define atomic64_dec(v)			atomic64_sub(1LL, (v))
+#define atomic64_dec_unchecked(v)	atomic64_sub_unchecked(1LL, (v))
 #define atomic64_dec_return(v)		atomic64_sub_return(1LL, (v))
 #define atomic64_dec_and_test(v)	(atomic64_dec_return((v)) == 0)
 #define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1LL, 0LL)
diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
index c6a3e73..35cca85 100644
--- a/arch/arm/include/asm/barrier.h
+++ b/arch/arm/include/asm/barrier.h
@@ -63,7 +63,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	smp_mb();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h
index 75fe66b..ba3dee4 100644
--- a/arch/arm/include/asm/cache.h
+++ b/arch/arm/include/asm/cache.h
@@ -4,8 +4,10 @@
 #ifndef __ASMARM_CACHE_H
 #define __ASMARM_CACHE_H
 
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT		CONFIG_ARM_L1_CACHE_SHIFT
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 /*
  * Memory returned by kmalloc() may be used for DMA, so we must make
@@ -24,5 +26,6 @@
 #endif
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
+#define __read_only __attribute__ ((__section__(".data..read_only")))
 
 #endif
diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
index fd43f7f..a817f5a 100644
--- a/arch/arm/include/asm/cacheflush.h
+++ b/arch/arm/include/asm/cacheflush.h
@@ -116,7 +116,7 @@ struct cpu_cache_fns {
 	void (*dma_unmap_area)(const void *, size_t, int);
 
 	void (*dma_flush_range)(const void *, const void *);
-};
+} __no_const;
 
 /*
  * Select the calling method
diff --git a/arch/arm/include/asm/checksum.h b/arch/arm/include/asm/checksum.h
index 5233151..87a71fa 100644
--- a/arch/arm/include/asm/checksum.h
+++ b/arch/arm/include/asm/checksum.h
@@ -37,7 +37,19 @@ __wsum
 csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
 
 __wsum
-csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr);
+__csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr);
+
+static inline __wsum
+csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr)
+{
+	__wsum ret;
+	pax_open_userland();
+	ret = __csum_partial_copy_from_user(src, dst, len, sum, err_ptr);
+	pax_close_userland();
+	return ret;
+}
+
+
 
 /*
  * 	Fold a partial checksum without adding pseudo headers
diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h
index abb2c37..96db950 100644
--- a/arch/arm/include/asm/cmpxchg.h
+++ b/arch/arm/include/asm/cmpxchg.h
@@ -104,6 +104,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
 
 #define xchg(ptr,x) \
 	((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
+#define xchg_unchecked(ptr,x) \
+	((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
 
 #include <asm-generic/cmpxchg-local.h>
 
diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
index 6ddbe44..b5e38b1 100644
--- a/arch/arm/include/asm/domain.h
+++ b/arch/arm/include/asm/domain.h
@@ -48,18 +48,37 @@
  * Domain types
  */
 #define DOMAIN_NOACCESS	0
-#define DOMAIN_CLIENT	1
 #ifdef CONFIG_CPU_USE_DOMAINS
+#define DOMAIN_USERCLIENT	1
+#define DOMAIN_KERNELCLIENT	1
 #define DOMAIN_MANAGER	3
+#define DOMAIN_VECTORS		DOMAIN_USER
 #else
+
+#ifdef CONFIG_PAX_KERNEXEC
 #define DOMAIN_MANAGER	1
+#define DOMAIN_KERNEXEC	3
+#else
+#define DOMAIN_MANAGER	1
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#define DOMAIN_USERCLIENT	0
+#define DOMAIN_UDEREF		1
+#define DOMAIN_VECTORS		DOMAIN_KERNEL
+#else
+#define DOMAIN_USERCLIENT	1
+#define DOMAIN_VECTORS		DOMAIN_USER
+#endif
+#define DOMAIN_KERNELCLIENT	1
+
 #endif
 
 #define domain_val(dom,type)	((type) << (2*(dom)))
 
 #ifndef __ASSEMBLY__
 
-#ifdef CONFIG_CPU_USE_DOMAINS
+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
 static inline void set_domain(unsigned val)
 {
 	asm volatile(
@@ -68,15 +87,7 @@ static inline void set_domain(unsigned val)
 	isb();
 }
 
-#define modify_domain(dom,type)					\
-	do {							\
-	struct thread_info *thread = current_thread_info();	\
-	unsigned int domain = thread->cpu_domain;		\
-	domain &= ~domain_val(dom, DOMAIN_MANAGER);		\
-	thread->cpu_domain = domain | domain_val(dom, type);	\
-	set_domain(thread->cpu_domain);				\
-	} while (0)
-
+extern void modify_domain(unsigned int dom, unsigned int type);
 #else
 static inline void set_domain(unsigned val) { }
 static inline void modify_domain(unsigned dom, unsigned type)	{ }
diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
index f4b46d3..abc9b2b 100644
--- a/arch/arm/include/asm/elf.h
+++ b/arch/arm/include/asm/elf.h
@@ -114,7 +114,14 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x00008000UL
+
+#define PAX_DELTA_MMAP_LEN	((current->personality == PER_LINUX_32BIT) ? 16 : 10)
+#define PAX_DELTA_STACK_LEN	((current->personality == PER_LINUX_32BIT) ? 16 : 10)
+#endif
 
 /* When the program starts, a1 contains a pointer to a function to be 
    registered with atexit, as per the SVR4 ABI.  A value of 0 means we 
@@ -124,10 +131,6 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
 extern void elf_set_personality(const struct elf32_hdr *);
 #define SET_PERSONALITY(ex)	elf_set_personality(&(ex))
 
-struct mm_struct;
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 #ifdef CONFIG_MMU
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 struct linux_binprm;
diff --git a/arch/arm/include/asm/fncpy.h b/arch/arm/include/asm/fncpy.h
index de53547..52b9a28 100644
--- a/arch/arm/include/asm/fncpy.h
+++ b/arch/arm/include/asm/fncpy.h
@@ -81,7 +81,9 @@
 	BUG_ON((uintptr_t)(dest_buf) & (FNCPY_ALIGN - 1) ||		\
 		(__funcp_address & ~(uintptr_t)1 & (FNCPY_ALIGN - 1)));	\
 									\
+	pax_open_kernel();						\
 	memcpy(dest_buf, (void const *)(__funcp_address & ~1), size);	\
+	pax_close_kernel();						\
 	flush_icache_range((unsigned long)(dest_buf),			\
 		(unsigned long)(dest_buf) + (size));			\
 									\
diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
index 53e69da..3fdc896 100644
--- a/arch/arm/include/asm/futex.h
+++ b/arch/arm/include/asm/futex.h
@@ -46,6 +46,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
 		return -EFAULT;
 
+	pax_open_userland();
+
 	smp_mb();
 	/* Prefetching cannot fault */
 	prefetchw(uaddr);
@@ -63,6 +65,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 	: "cc", "memory");
 	smp_mb();
 
+	pax_close_userland();
+
 	*uval = val;
 	return ret;
 }
@@ -93,6 +97,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 	if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
 		return -EFAULT;
 
+	pax_open_userland();
+
 	__asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n"
 	"1:	" TUSER(ldr) "	%1, [%4]\n"
 	"	teq	%1, %2\n"
@@ -103,6 +109,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
 	: "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
 	: "cc", "memory");
 
+	pax_close_userland();
+
 	*uval = val;
 	return ret;
 }
@@ -125,6 +133,7 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
 		return -EFAULT;
 
 	pagefault_disable();	/* implies preempt_disable() */
+	pax_open_userland();
 
 	switch (op) {
 	case FUTEX_OP_SET:
@@ -146,6 +155,7 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
 		ret = -ENOSYS;
 	}
 
+	pax_close_userland();
 	pagefault_enable();	/* subsumes preempt_enable() */
 
 	if (!ret) {
diff --git a/arch/arm/include/asm/kmap_types.h b/arch/arm/include/asm/kmap_types.h
index 83eb2f7..ed77159 100644
--- a/arch/arm/include/asm/kmap_types.h
+++ b/arch/arm/include/asm/kmap_types.h
@@ -4,6 +4,6 @@
 /*
  * This is the "bare minimum".  AIO seems to require this.
  */
-#define KM_TYPE_NR 16
+#define KM_TYPE_NR 17
 
 #endif
diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h
index 9e614a1..3302cca 100644
--- a/arch/arm/include/asm/mach/dma.h
+++ b/arch/arm/include/asm/mach/dma.h
@@ -22,7 +22,7 @@ struct dma_ops {
 	int	(*residue)(unsigned int, dma_t *);		/* optional */
 	int	(*setspeed)(unsigned int, dma_t *, int);	/* optional */
 	const char *type;
-};
+} __do_const;
 
 struct dma_struct {
 	void		*addr;		/* single DMA address		*/
diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
index f98c7f3..e5c626d 100644
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -23,17 +23,19 @@ struct map_desc {
 
 /* types 0-3 are defined in asm/io.h */
 enum {
-	MT_UNCACHED = 4,
-	MT_CACHECLEAN,
-	MT_MINICLEAN,
+	MT_UNCACHED_RW = 4,
+	MT_CACHECLEAN_RO,
+	MT_MINICLEAN_RO,
 	MT_LOW_VECTORS,
 	MT_HIGH_VECTORS,
-	MT_MEMORY_RWX,
+	__MT_MEMORY_RWX,
 	MT_MEMORY_RW,
-	MT_ROM,
-	MT_MEMORY_RWX_NONCACHED,
+	MT_MEMORY_RX,
+	MT_ROM_RX,
+	MT_MEMORY_RW_NONCACHED,
+	MT_MEMORY_RX_NONCACHED,
 	MT_MEMORY_RW_DTCM,
-	MT_MEMORY_RWX_ITCM,
+	MT_MEMORY_RX_ITCM,
 	MT_MEMORY_RW_SO,
 	MT_MEMORY_DMA_READY,
 };
diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
index 891a56b..48f337e 100644
--- a/arch/arm/include/asm/outercache.h
+++ b/arch/arm/include/asm/outercache.h
@@ -36,7 +36,7 @@ struct outer_cache_fns {
 
 	/* This is an ARM L2C thing */
 	void (*write_sec)(unsigned long, unsigned);
-};
+} __no_const;
 
 extern struct outer_cache_fns outer_cache;
 
diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
index 4355f0e..cd9168e 100644
--- a/arch/arm/include/asm/page.h
+++ b/arch/arm/include/asm/page.h
@@ -23,6 +23,7 @@
 
 #else
 
+#include <linux/compiler.h>
 #include <asm/glue.h>
 
 /*
@@ -114,7 +115,7 @@ struct cpu_user_fns {
 	void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
 	void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
 			unsigned long vaddr, struct vm_area_struct *vma);
-};
+} __no_const;
 
 #ifdef MULTI_USER
 extern struct cpu_user_fns cpu_user;
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index 78a7793..e3dc06c 100644
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -17,6 +17,7 @@
 #include <asm/processor.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
+#include <asm/system_info.h>
 
 #define check_pgt_cache()		do { } while (0)
 
@@ -43,6 +44,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 	set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE));
 }
 
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	pud_populate(mm, pud, pmd);
+}
+
 #else	/* !CONFIG_ARM_LPAE */
 
 /*
@@ -51,6 +57,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 #define pmd_alloc_one(mm,addr)		({ BUG(); ((pmd_t *)2); })
 #define pmd_free(mm, pmd)		do { } while (0)
 #define pud_populate(mm,pmd,pte)	BUG()
+#define pud_populate_kernel(mm,pmd,pte)	BUG()
 
 #endif	/* CONFIG_ARM_LPAE */
 
@@ -128,6 +135,19 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
 	__free_page(pte);
 }
 
+static inline void __section_update(pmd_t *pmdp, unsigned long addr, pmdval_t prot)
+{
+#ifdef CONFIG_ARM_LPAE
+	pmdp[0] = __pmd(pmd_val(pmdp[0]) | prot);
+#else
+	if (addr & SECTION_SIZE)
+		pmdp[1] = __pmd(pmd_val(pmdp[1]) | prot);
+	else
+		pmdp[0] = __pmd(pmd_val(pmdp[0]) | prot);
+#endif
+	flush_pmd_entry(pmdp);
+}
+
 static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte,
 				  pmdval_t prot)
 {
@@ -157,7 +177,7 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
 static inline void
 pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
 {
-	__pmd_populate(pmdp, page_to_phys(ptep), _PAGE_USER_TABLE);
+	__pmd_populate(pmdp, page_to_phys(ptep), _PAGE_USER_TABLE | __supported_pmd_mask);
 }
 #define pmd_pgtable(pmd) pmd_page(pmd)
 
diff --git a/arch/arm/include/asm/pgtable-2level-hwdef.h b/arch/arm/include/asm/pgtable-2level-hwdef.h
index 5cfba15..f415e1a 100644
--- a/arch/arm/include/asm/pgtable-2level-hwdef.h
+++ b/arch/arm/include/asm/pgtable-2level-hwdef.h
@@ -20,12 +20,15 @@
 #define PMD_TYPE_FAULT		(_AT(pmdval_t, 0) << 0)
 #define PMD_TYPE_TABLE		(_AT(pmdval_t, 1) << 0)
 #define PMD_TYPE_SECT		(_AT(pmdval_t, 2) << 0)
+#define PMD_PXNTABLE		(_AT(pmdval_t, 1) << 2)		/* v7 */
 #define PMD_BIT4		(_AT(pmdval_t, 1) << 4)
 #define PMD_DOMAIN(x)		(_AT(pmdval_t, (x)) << 5)
 #define PMD_PROTECTION		(_AT(pmdval_t, 1) << 9)		/* v5 */
+
 /*
  *   - section
  */
+#define PMD_SECT_PXN		(_AT(pmdval_t, 1) << 0)		/* v7 */
 #define PMD_SECT_BUFFERABLE	(_AT(pmdval_t, 1) << 2)
 #define PMD_SECT_CACHEABLE	(_AT(pmdval_t, 1) << 3)
 #define PMD_SECT_XN		(_AT(pmdval_t, 1) << 4)		/* v6 */
@@ -37,6 +40,7 @@
 #define PMD_SECT_nG		(_AT(pmdval_t, 1) << 17)	/* v6 */
 #define PMD_SECT_SUPER		(_AT(pmdval_t, 1) << 18)	/* v6 */
 #define PMD_SECT_AF		(_AT(pmdval_t, 0))
+#define PMD_SECT_RDONLY		(_AT(pmdval_t, 0))
 
 #define PMD_SECT_UNCACHED	(_AT(pmdval_t, 0))
 #define PMD_SECT_BUFFERED	(PMD_SECT_BUFFERABLE)
@@ -66,6 +70,7 @@
  *   - extended small page/tiny page
  */
 #define PTE_EXT_XN		(_AT(pteval_t, 1) << 0)		/* v6 */
+#define PTE_EXT_PXN		(_AT(pteval_t, 1) << 2)		/* v7 */
 #define PTE_EXT_AP_MASK		(_AT(pteval_t, 3) << 4)
 #define PTE_EXT_AP0		(_AT(pteval_t, 1) << 4)
 #define PTE_EXT_AP1		(_AT(pteval_t, 2) << 4)
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index 219ac88..73ec32a 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -126,6 +126,9 @@
 #define L_PTE_SHARED		(_AT(pteval_t, 1) << 10)	/* shared(v6), coherent(xsc3) */
 #define L_PTE_NONE		(_AT(pteval_t, 1) << 11)
 
+/* Two-level page tables only have PXN in the PGD, not in the PTE. */
+#define L_PTE_PXN		(_AT(pteval_t, 0))
+
 /*
  * These are the memory types, defined to be compatible with
  * pre-ARMv6 CPUs cacheable and bufferable bits:   XXCB
diff --git a/arch/arm/include/asm/pgtable-3level-hwdef.h b/arch/arm/include/asm/pgtable-3level-hwdef.h
index 626989f..9d67a33 100644
--- a/arch/arm/include/asm/pgtable-3level-hwdef.h
+++ b/arch/arm/include/asm/pgtable-3level-hwdef.h
@@ -75,6 +75,7 @@
 #define PTE_EXT_SHARED		(_AT(pteval_t, 3) << 8)		/* SH[1:0], inner shareable */
 #define PTE_EXT_AF		(_AT(pteval_t, 1) << 10)	/* Access Flag */
 #define PTE_EXT_NG		(_AT(pteval_t, 1) << 11)	/* nG */
+#define PTE_EXT_PXN		(_AT(pteval_t, 1) << 53)	/* PXN */
 #define PTE_EXT_XN		(_AT(pteval_t, 1) << 54)	/* XN */
 
 /*
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 85c60ad..b0bbd7e 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -82,6 +82,7 @@
 #define L_PTE_RDONLY		(_AT(pteval_t, 1) << 7)		/* AP[2] */
 #define L_PTE_SHARED		(_AT(pteval_t, 3) << 8)		/* SH[1:0], inner shareable */
 #define L_PTE_YOUNG		(_AT(pteval_t, 1) << 10)	/* AF */
+#define L_PTE_PXN		(_AT(pteval_t, 1) << 53)	/* PXN */
 #define L_PTE_XN		(_AT(pteval_t, 1) << 54)	/* XN */
 #define L_PTE_DIRTY		(_AT(pteval_t, 1) << 55)	/* unused */
 #define L_PTE_SPECIAL		(_AT(pteval_t, 1) << 56)	/* unused */
@@ -95,6 +96,7 @@
 /*
  * To be used in assembly code with the upper page attributes.
  */
+#define L_PTE_PXN_HIGH		(1 << (53 - 32))
 #define L_PTE_XN_HIGH		(1 << (54 - 32))
 #define L_PTE_DIRTY_HIGH	(1 << (55 - 32))
 
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index 5478e5d..f5b5cb3 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -33,6 +33,9 @@
 #include <asm/pgtable-2level.h>
 #endif
 
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+
 /*
  * Just any arbitrary offset to the start of the vmalloc VM area: the
  * current 8MB value just means that there will be a 8MB "hole" after the
@@ -48,6 +51,9 @@
 #define LIBRARY_TEXT_START	0x0c000000
 
 #ifndef __ASSEMBLY__
+extern pteval_t __supported_pte_mask;
+extern pmdval_t __supported_pmd_mask;
+
 extern void __pte_error(const char *file, int line, pte_t);
 extern void __pmd_error(const char *file, int line, pmd_t);
 extern void __pgd_error(const char *file, int line, pgd_t);
@@ -56,6 +62,48 @@ extern void __pgd_error(const char *file, int line, pgd_t);
 #define pmd_ERROR(pmd)		__pmd_error(__FILE__, __LINE__, pmd)
 #define pgd_ERROR(pgd)		__pgd_error(__FILE__, __LINE__, pgd)
 
+#define  __HAVE_ARCH_PAX_OPEN_KERNEL
+#define  __HAVE_ARCH_PAX_CLOSE_KERNEL
+
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+#include <asm/domain.h>
+#include <linux/thread_info.h>
+#include <linux/preempt.h>
+
+static inline int test_domain(int domain, int domaintype)
+{
+	return ((current_thread_info()->cpu_domain) & domain_val(domain, 3)) == domain_val(domain, domaintype);
+}
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+static inline unsigned long pax_open_kernel(void) {
+#ifdef CONFIG_ARM_LPAE
+	/* TODO */
+#else
+	preempt_disable();
+	BUG_ON(test_domain(DOMAIN_KERNEL, DOMAIN_KERNEXEC));
+	modify_domain(DOMAIN_KERNEL, DOMAIN_KERNEXEC);
+#endif
+	return 0;
+}
+
+static inline unsigned long pax_close_kernel(void) {
+#ifdef CONFIG_ARM_LPAE
+	/* TODO */
+#else
+	BUG_ON(test_domain(DOMAIN_KERNEL, DOMAIN_MANAGER));
+	/* DOMAIN_MANAGER = "client" under KERNEXEC */
+	modify_domain(DOMAIN_KERNEL, DOMAIN_MANAGER);
+	preempt_enable_no_resched();
+#endif
+	return 0;
+}
+#else
+static inline unsigned long pax_open_kernel(void) { return 0; }
+static inline unsigned long pax_close_kernel(void) { return 0; }
+#endif
+
 /*
  * This is the lowest virtual address we can permit any user space
  * mapping to be mapped at.  This is particularly important for
@@ -75,8 +123,8 @@ extern void __pgd_error(const char *file, int line, pgd_t);
 /*
  * The pgprot_* and protection_map entries will be fixed up in runtime
  * to include the cachable and bufferable bits based on memory policy,
- * as well as any architecture dependent bits like global/ASID and SMP
- * shared mapping bits.
+ * as well as any architecture dependent bits like global/ASID, PXN,
+ * and SMP shared mapping bits.
  */
 #define _L_PTE_DEFAULT	L_PTE_PRESENT | L_PTE_YOUNG
 
@@ -265,7 +313,7 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
 	const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER |
-		L_PTE_NONE | L_PTE_VALID;
+		L_PTE_NONE | L_PTE_VALID | __supported_pte_mask;
 	pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
 	return pte;
 }
diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
index c25ef3e..735f14b 100644
--- a/arch/arm/include/asm/psci.h
+++ b/arch/arm/include/asm/psci.h
@@ -32,7 +32,7 @@ struct psci_operations {
 	int (*affinity_info)(unsigned long target_affinity,
 			unsigned long lowest_affinity_level);
 	int (*migrate_info_type)(void);
-};
+} __no_const;
 
 extern struct psci_operations psci_ops;
 extern struct smp_operations psci_smp_ops;
diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h
index 2ec765c..beb1fe16 100644
--- a/arch/arm/include/asm/smp.h
+++ b/arch/arm/include/asm/smp.h
@@ -113,7 +113,7 @@ struct smp_operations {
 	int  (*cpu_disable)(unsigned int cpu);
 #endif
 #endif
-};
+} __no_const;
 
 struct of_cpu_method {
 	const char *method;
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index e4e4208..086684a 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -88,9 +88,9 @@ struct thread_info {
 	.flags		= 0,						\
 	.preempt_count	= INIT_PREEMPT_COUNT,				\
 	.addr_limit	= KERNEL_DS,					\
-	.cpu_domain	= domain_val(DOMAIN_USER, DOMAIN_MANAGER) |	\
-			  domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) |	\
-			  domain_val(DOMAIN_IO, DOMAIN_CLIENT),		\
+	.cpu_domain	= domain_val(DOMAIN_USER, DOMAIN_USERCLIENT) |	\
+			  domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT) |	\
+			  domain_val(DOMAIN_IO, DOMAIN_KERNELCLIENT),	\
 	.restart_block	= {						\
 		.fn	= do_no_restart_syscall,			\
 	},								\
@@ -164,7 +164,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
 #define TIF_SYSCALL_AUDIT	9
 #define TIF_SYSCALL_TRACEPOINT	10
 #define TIF_SECCOMP		11	/* seccomp syscall filtering active */
-#define TIF_NOHZ		12	/* in adaptive nohz mode */
+/* within 8 bits of TIF_SYSCALL_TRACE
+ *  to meet flexible second operand requirements
+ */
+#define TIF_GRSEC_SETXID	12
+#define TIF_NOHZ		13	/* in adaptive nohz mode */
 #define TIF_USING_IWMMXT	17
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK	20
@@ -178,10 +182,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
 #define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_SECCOMP		(1 << TIF_SECCOMP)
 #define _TIF_USING_IWMMXT	(1 << TIF_USING_IWMMXT)
+#define _TIF_GRSEC_SETXID	(1 << TIF_GRSEC_SETXID)
 
 /* Checks for any syscall work in entry-common.S */
 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
-			   _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
+			   _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | _TIF_GRSEC_SETXID)
 
 /*
  * Change these and you break ASM code in entry-common.S
diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
index 75d9579..b5b40e4 100644
--- a/arch/arm/include/asm/uaccess.h
+++ b/arch/arm/include/asm/uaccess.h
@@ -18,6 +18,7 @@
 #include <asm/domain.h>
 #include <asm/unified.h>
 #include <asm/compiler.h>
+#include <asm/pgtable.h>
 
 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
 #include <asm-generic/uaccess-unaligned.h>
@@ -70,11 +71,38 @@ extern int __put_user_bad(void);
 static inline void set_fs(mm_segment_t fs)
 {
 	current_thread_info()->addr_limit = fs;
-	modify_domain(DOMAIN_KERNEL, fs ? DOMAIN_CLIENT : DOMAIN_MANAGER);
+	modify_domain(DOMAIN_KERNEL, fs ? DOMAIN_KERNELCLIENT : DOMAIN_MANAGER);
 }
 
 #define segment_eq(a,b)	((a) == (b))
 
+#define __HAVE_ARCH_PAX_OPEN_USERLAND
+#define __HAVE_ARCH_PAX_CLOSE_USERLAND
+
+static inline void pax_open_userland(void)
+{
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (segment_eq(get_fs(), USER_DS)) {
+		BUG_ON(test_domain(DOMAIN_USER, DOMAIN_UDEREF));
+		modify_domain(DOMAIN_USER, DOMAIN_UDEREF);
+	}
+#endif
+
+}
+
+static inline void pax_close_userland(void)
+{
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (segment_eq(get_fs(), USER_DS)) {
+		BUG_ON(test_domain(DOMAIN_USER, DOMAIN_NOACCESS));
+		modify_domain(DOMAIN_USER, DOMAIN_NOACCESS);
+	}
+#endif
+
+}
+
 #define __addr_ok(addr) ({ \
 	unsigned long flag; \
 	__asm__("cmp %2, %0; movlo %0, #0" \
@@ -150,8 +178,12 @@ extern int __get_user_4(void *);
 
 #define get_user(x,p)							\
 	({								\
+		int __e;						\
 		might_fault();						\
-		__get_user_check(x,p);					\
+		pax_open_userland();					\
+		__e = __get_user_check(x,p);				\
+		pax_close_userland();					\
+		__e;							\
 	 })
 
 extern int __put_user_1(void *, unsigned int);
@@ -196,8 +228,12 @@ extern int __put_user_8(void *, unsigned long long);
 
 #define put_user(x,p)							\
 	({								\
+		int __e;						\
 		might_fault();						\
-		__put_user_check(x,p);					\
+		pax_open_userland();					\
+		__e = __put_user_check(x,p);				\
+		pax_close_userland();					\
+		__e;							\
 	 })
 
 #else /* CONFIG_MMU */
@@ -221,6 +257,7 @@ static inline void set_fs(mm_segment_t fs)
 
 #endif /* CONFIG_MMU */
 
+#define access_ok_noprefault(type,addr,size) access_ok((type),(addr),(size))
 #define access_ok(type,addr,size)	(__range_ok(addr,size) == 0)
 
 #define user_addr_max() \
@@ -238,13 +275,17 @@ static inline void set_fs(mm_segment_t fs)
 #define __get_user(x,ptr)						\
 ({									\
 	long __gu_err = 0;						\
+	pax_open_userland();						\
 	__get_user_err((x),(ptr),__gu_err);				\
+	pax_close_userland();						\
 	__gu_err;							\
 })
 
 #define __get_user_error(x,ptr,err)					\
 ({									\
+	pax_open_userland();						\
 	__get_user_err((x),(ptr),err);					\
+	pax_close_userland();						\
 	(void) 0;							\
 })
 
@@ -320,13 +361,17 @@ do {									\
 #define __put_user(x,ptr)						\
 ({									\
 	long __pu_err = 0;						\
+	pax_open_userland();						\
 	__put_user_err((x),(ptr),__pu_err);				\
+	pax_close_userland();						\
 	__pu_err;							\
 })
 
 #define __put_user_error(x,ptr,err)					\
 ({									\
+	pax_open_userland();						\
 	__put_user_err((x),(ptr),err);					\
+	pax_close_userland();						\
 	(void) 0;							\
 })
 
@@ -426,11 +471,44 @@ do {									\
 
 
 #ifdef CONFIG_MMU
-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
+extern unsigned long __must_check ___copy_from_user(void *to, const void __user *from, unsigned long n);
+extern unsigned long __must_check ___copy_to_user(void __user *to, const void *from, unsigned long n);
+
+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	unsigned long ret;
+
+	check_object_size(to, n, false);
+	pax_open_userland();
+	ret = ___copy_from_user(to, from, n);
+	pax_close_userland();
+	return ret;
+}
+
+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	unsigned long ret;
+
+	check_object_size(from, n, true);
+	pax_open_userland();
+	ret = ___copy_to_user(to, from, n);
+	pax_close_userland();
+	return ret;
+}
+
 extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n);
-extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
+extern unsigned long __must_check ___clear_user(void __user *addr, unsigned long n);
 extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned long n);
+
+static inline unsigned long __must_check __clear_user(void __user *addr, unsigned long n)
+{
+	unsigned long ret;
+	pax_open_userland();
+	ret = ___clear_user(addr, n);
+	pax_close_userland();
+	return ret;
+}
+
 #else
 #define __copy_from_user(to,from,n)	(memcpy(to, (void __force *)from, n), 0)
 #define __copy_to_user(to,from,n)	(memcpy((void __force *)to, from, n), 0)
@@ -439,6 +517,9 @@ extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned l
 
 static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	if (access_ok(VERIFY_READ, from, n))
 		n = __copy_from_user(to, from, n);
 	else /* security hole - plug it */
@@ -448,6 +529,9 @@ static inline unsigned long __must_check copy_from_user(void *to, const void __u
 
 static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	if (access_ok(VERIFY_WRITE, to, n))
 		n = __copy_to_user(to, from, n);
 	return n;
diff --git a/arch/arm/include/uapi/asm/ptrace.h b/arch/arm/include/uapi/asm/ptrace.h
index 5af0ed1..cea83883 100644
--- a/arch/arm/include/uapi/asm/ptrace.h
+++ b/arch/arm/include/uapi/asm/ptrace.h
@@ -92,7 +92,7 @@
  * ARMv7 groups of PSR bits
  */
 #define APSR_MASK	0xf80f0000	/* N, Z, C, V, Q and GE flags */
-#define PSR_ISET_MASK	0x01000010	/* ISA state (J, T) mask */
+#define PSR_ISET_MASK	0x01000020	/* ISA state (J, T) mask */
 #define PSR_IT_MASK	0x0600fc00	/* If-Then execution state mask */
 #define PSR_ENDIAN_MASK	0x00000200	/* Endianness state mask */
 
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index f7b450f..f5364c5 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -55,7 +55,7 @@ EXPORT_SYMBOL(arm_delay_ops);
 
 	/* networking */
 EXPORT_SYMBOL(csum_partial);
-EXPORT_SYMBOL(csum_partial_copy_from_user);
+EXPORT_SYMBOL(__csum_partial_copy_from_user);
 EXPORT_SYMBOL(csum_partial_copy_nocheck);
 EXPORT_SYMBOL(__csum_ipv6_magic);
 
@@ -91,9 +91,9 @@ EXPORT_SYMBOL(__memzero);
 #ifdef CONFIG_MMU
 EXPORT_SYMBOL(copy_page);
 
-EXPORT_SYMBOL(__copy_from_user);
-EXPORT_SYMBOL(__copy_to_user);
-EXPORT_SYMBOL(__clear_user);
+EXPORT_SYMBOL(___copy_from_user);
+EXPORT_SYMBOL(___copy_to_user);
+EXPORT_SYMBOL(___clear_user);
 
 EXPORT_SYMBOL(__get_user_1);
 EXPORT_SYMBOL(__get_user_2);
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 52a949a..d8bbcab 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -47,6 +47,87 @@
 9997:
 	.endm
 
+	.macro	pax_enter_kernel
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	@ make aligned space for saved DACR
+	sub	sp, sp, #8
+	@ save regs
+	stmdb	sp!, {r1, r2}
+	@ read DACR from cpu_domain into r1
+	mov	r2, sp
+	@ assume 8K pages, since we have to split the immediate in two
+	bic	r2, r2, #(0x1fc0)
+	bic	r2, r2, #(0x3f)
+	ldr	r1, [r2, #TI_CPU_DOMAIN]
+	@ store old DACR on stack
+	str	r1, [sp, #8]
+#ifdef CONFIG_PAX_KERNEXEC
+	@ set type of DOMAIN_KERNEL to DOMAIN_KERNELCLIENT
+	bic	r1, r1, #(domain_val(DOMAIN_KERNEL, 3))
+	orr	r1, r1, #(domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT))
+#endif
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	@ set current DOMAIN_USER to DOMAIN_NOACCESS
+	bic	r1, r1, #(domain_val(DOMAIN_USER, 3))
+#endif
+	@ write r1 to current_thread_info()->cpu_domain
+	str	r1, [r2, #TI_CPU_DOMAIN]
+	@ write r1 to DACR
+	mcr	p15, 0, r1, c3, c0, 0
+	@ instruction sync
+	instr_sync
+	@ restore regs
+	ldmia	sp!, {r1, r2}
+#endif
+	.endm
+
+	.macro	pax_open_userland
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	@ save regs
+	stmdb	sp!, {r0, r1}
+	@ read DACR from cpu_domain into r1
+	mov	r0, sp
+	@ assume 8K pages, since we have to split the immediate in two
+	bic	r0, r0, #(0x1fc0)
+	bic	r0, r0, #(0x3f)
+	ldr	r1, [r0, #TI_CPU_DOMAIN]
+	@ set current DOMAIN_USER to DOMAIN_CLIENT
+	bic	r1, r1, #(domain_val(DOMAIN_USER, 3))
+	orr	r1, r1, #(domain_val(DOMAIN_USER, DOMAIN_UDEREF))
+	@ write r1 to current_thread_info()->cpu_domain
+	str	r1, [r0, #TI_CPU_DOMAIN]
+	@ write r1 to DACR
+	mcr	p15, 0, r1, c3, c0, 0
+	@ instruction sync
+	instr_sync
+	@ restore regs
+	ldmia	sp!, {r0, r1}
+#endif
+	.endm
+
+	.macro	pax_close_userland
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	@ save regs
+	stmdb	sp!, {r0, r1}
+	@ read DACR from cpu_domain into r1
+	mov	r0, sp
+	@ assume 8K pages, since we have to split the immediate in two
+	bic	r0, r0, #(0x1fc0)
+	bic	r0, r0, #(0x3f)
+	ldr	r1, [r0, #TI_CPU_DOMAIN]
+	@ set current DOMAIN_USER to DOMAIN_NOACCESS
+	bic	r1, r1, #(domain_val(DOMAIN_USER, 3))
+	@ write r1 to current_thread_info()->cpu_domain
+	str	r1, [r0, #TI_CPU_DOMAIN]
+	@ write r1 to DACR
+	mcr	p15, 0, r1, c3, c0, 0
+	@ instruction sync
+	instr_sync
+	@ restore regs
+	ldmia	sp!, {r0, r1}
+#endif
+	.endm
+
 	.macro	pabt_helper
 	@ PABORT handler takes pt_regs in r2, fault address in r4 and psr in r5
 #ifdef MULTI_PABORT
@@ -89,11 +170,15 @@
  * Invalid mode handlers
  */
 	.macro	inv_entry, reason
+
+	pax_enter_kernel
+
 	sub	sp, sp, #S_FRAME_SIZE
  ARM(	stmib	sp, {r1 - lr}		)
  THUMB(	stmia	sp, {r0 - r12}		)
  THUMB(	str	sp, [sp, #S_SP]		)
  THUMB(	str	lr, [sp, #S_LR]		)
+
 	mov	r1, #\reason
 	.endm
 
@@ -149,7 +234,11 @@ ENDPROC(__und_invalid)
 	.macro	svc_entry, stack_hole=0
  UNWIND(.fnstart		)
  UNWIND(.save {r0 - pc}		)
+
+	pax_enter_kernel
+
 	sub	sp, sp, #(S_FRAME_SIZE + \stack_hole - 4)
+
 #ifdef CONFIG_THUMB2_KERNEL
  SPFIX(	str	r0, [sp]	)	@ temporarily saved
  SPFIX(	mov	r0, sp		)
@@ -164,7 +253,12 @@ ENDPROC(__und_invalid)
 	ldmia	r0, {r3 - r5}
 	add	r7, sp, #S_SP - 4	@ here for interlock avoidance
 	mov	r6, #-1			@  ""  ""      ""       ""
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	@ offset sp by 8 as done in pax_enter_kernel
+	add	r2, sp, #(S_FRAME_SIZE + \stack_hole + 4)
+#else
 	add	r2, sp, #(S_FRAME_SIZE + \stack_hole - 4)
+#endif
  SPFIX(	addeq	r2, r2, #4	)
 	str	r3, [sp, #-4]!		@ save the "real" r0 copied
 					@ from the exception stack
@@ -317,6 +411,9 @@ ENDPROC(__pabt_svc)
 	.macro	usr_entry
  UNWIND(.fnstart	)
  UNWIND(.cantunwind	)	@ don't unwind the user space
+
+	pax_enter_kernel_user
+
 	sub	sp, sp, #S_FRAME_SIZE
  ARM(	stmib	sp, {r1 - r12}	)
  THUMB(	stmia	sp, {r0 - r12}	)
@@ -421,7 +518,9 @@ __und_usr:
 	tst	r3, #PSR_T_BIT			@ Thumb mode?
 	bne	__und_usr_thumb
 	sub	r4, r2, #4			@ ARM instr at LR - 4
+	pax_open_userland
 1:	ldrt	r0, [r4]
+	pax_close_userland
  ARM_BE8(rev	r0, r0)				@ little endian instruction
 
 	@ r0 = 32-bit ARM instruction which caused the exception
@@ -455,11 +554,15 @@ __und_usr_thumb:
  */
 	.arch	armv6t2
 #endif
+	pax_open_userland
 2:	ldrht	r5, [r4]
+	pax_close_userland
 ARM_BE8(rev16	r5, r5)				@ little endian instruction
 	cmp	r5, #0xe800			@ 32bit instruction if xx != 0
 	blo	__und_usr_fault_16		@ 16bit undefined instruction
+	pax_open_userland
 3:	ldrht	r0, [r2]
+	pax_close_userland
 ARM_BE8(rev16	r0, r0)				@ little endian instruction
 	add	r2, r2, #2			@ r2 is PC + 2, make it PC + 4
 	str	r2, [sp, #S_PC]			@ it's a 2x16bit instr, update
@@ -489,7 +592,8 @@ ENDPROC(__und_usr)
  */
 	.pushsection .fixup, "ax"
 	.align	2
-4:	str     r4, [sp, #S_PC]			@ retry current instruction
+4:	pax_close_userland
+	str     r4, [sp, #S_PC]			@ retry current instruction
 	mov	pc, r9
 	.popsection
 	.pushsection __ex_table,"a"
@@ -698,7 +802,7 @@ ENTRY(__switch_to)
  THUMB(	str	lr, [ip], #4		   )
 	ldr	r4, [r2, #TI_TP_VALUE]
 	ldr	r5, [r2, #TI_TP_VALUE + 4]
-#ifdef CONFIG_CPU_USE_DOMAINS
+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
 	ldr	r6, [r2, #TI_CPU_DOMAIN]
 #endif
 	switch_tls r1, r4, r5, r3, r7
@@ -707,7 +811,7 @@ ENTRY(__switch_to)
 	ldr	r8, =__stack_chk_guard
 	ldr	r7, [r7, #TSK_STACK_CANARY]
 #endif
-#ifdef CONFIG_CPU_USE_DOMAINS
+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
 	mcr	p15, 0, r6, c3, c0, 0		@ Set domain register
 #endif
 	mov	r5, r0
diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
index 7139d4a..feaf37f 100644
--- a/arch/arm/kernel/entry-common.S
+++ b/arch/arm/kernel/entry-common.S
@@ -10,18 +10,46 @@
 
 #include <asm/unistd.h>
 #include <asm/ftrace.h>
+#include <asm/domain.h>
 #include <asm/unwind.h>
 
+#include "entry-header.S"
+
 #ifdef CONFIG_NEED_RET_TO_USER
 #include <mach/entry-macro.S>
 #else
 	.macro  arch_ret_to_user, tmp1, tmp2
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	@ save regs
+	stmdb	sp!, {r1, r2}
+        @ read DACR from cpu_domain into r1
+        mov     r2, sp
+        @ assume 8K pages, since we have to split the immediate in two
+        bic     r2, r2, #(0x1fc0)
+        bic     r2, r2, #(0x3f)
+        ldr     r1, [r2, #TI_CPU_DOMAIN]
+#ifdef CONFIG_PAX_KERNEXEC
+        @ set type of DOMAIN_KERNEL to DOMAIN_KERNELCLIENT
+        bic     r1, r1, #(domain_val(DOMAIN_KERNEL, 3))
+        orr     r1, r1, #(domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT))
+#endif
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+        @ set current DOMAIN_USER to DOMAIN_UDEREF
+        bic     r1, r1, #(domain_val(DOMAIN_USER, 3))
+        orr     r1, r1, #(domain_val(DOMAIN_USER, DOMAIN_UDEREF))
+#endif
+        @ write r1 to current_thread_info()->cpu_domain
+        str     r1, [r2, #TI_CPU_DOMAIN]
+        @ write r1 to DACR
+        mcr     p15, 0, r1, c3, c0, 0
+        @ instruction sync
+        instr_sync
+	@ restore regs
+	ldmia	sp!, {r1, r2}
+#endif
 	.endm
 #endif
 
-#include "entry-header.S"
-
-
 	.align	5
 /*
  * This is the fast syscall return path.  We do as little as
@@ -405,6 +433,12 @@ ENTRY(vector_swi)
  USER(	ldr	scno, [lr, #-4]		)	@ get SWI instruction
 #endif
 
+	/*
+	 * do this here to avoid a performance hit of wrapping the code above
+	 * that directly dereferences userland to parse the SWI instruction
+	 */
+	pax_enter_kernel_user
+
 	adr	tbl, sys_call_table		@ load syscall table pointer
 
 #if defined(CONFIG_OABI_COMPAT)
diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
index 5d702f8..f5fc51a 100644
--- a/arch/arm/kernel/entry-header.S
+++ b/arch/arm/kernel/entry-header.S
@@ -188,6 +188,60 @@
 	msr	cpsr_c, \rtemp			@ switch back to the SVC mode
 	.endm
 
+	.macro	pax_enter_kernel_user
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	@ save regs
+	stmdb	sp!, {r0, r1}
+	@ read DACR from cpu_domain into r1
+	mov	r0, sp
+	@ assume 8K pages, since we have to split the immediate in two
+	bic	r0, r0, #(0x1fc0)
+	bic	r0, r0, #(0x3f)
+	ldr	r1, [r0, #TI_CPU_DOMAIN]
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	@ set current DOMAIN_USER to DOMAIN_NOACCESS
+	bic	r1, r1, #(domain_val(DOMAIN_USER, 3))
+#endif
+#ifdef CONFIG_PAX_KERNEXEC
+	@ set current DOMAIN_KERNEL to DOMAIN_KERNELCLIENT
+	bic	r1, r1, #(domain_val(DOMAIN_KERNEL, 3))
+	orr	r1, r1, #(domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT))
+#endif
+	@ write r1 to current_thread_info()->cpu_domain
+	str	r1, [r0, #TI_CPU_DOMAIN]
+	@ write r1 to DACR
+	mcr	p15, 0, r1, c3, c0, 0
+	@ instruction sync
+	instr_sync
+	@ restore regs
+	ldmia	sp!, {r0, r1}
+#endif
+	.endm
+
+	.macro  pax_exit_kernel
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	@ save regs
+	stmdb	sp!, {r0, r1}
+	@ read old DACR from stack into r1
+	ldr	r1, [sp, #(8 + S_SP)]
+	sub	r1, r1, #8
+	ldr	r1, [r1]
+
+	@ write r1 to current_thread_info()->cpu_domain
+	mov	r0, sp
+	@ assume 8K pages, since we have to split the immediate in two
+	bic	r0, r0, #(0x1fc0)
+	bic	r0, r0, #(0x3f)
+	str	r1, [r0, #TI_CPU_DOMAIN]
+	@ write r1 to DACR
+	mcr	p15, 0, r1, c3, c0, 0
+	@ instruction sync
+	instr_sync
+	@ restore regs
+	ldmia	sp!, {r0, r1}
+#endif
+	.endm
+
 #ifndef CONFIG_THUMB2_KERNEL
 	.macro	svc_exit, rpsr, irq = 0
 	.if	\irq != 0
@@ -207,6 +261,9 @@
 	blne	trace_hardirqs_off
 #endif
 	.endif
+
+	pax_exit_kernel
+
 	msr	spsr_cxsf, \rpsr
 #if defined(CONFIG_CPU_V6)
 	ldr	r0, [sp]
@@ -265,6 +322,9 @@
 	blne	trace_hardirqs_off
 #endif
 	.endif
+
+	pax_exit_kernel
+
 	ldr	lr, [sp, #S_SP]			@ top of the stack
 	ldrd	r0, r1, [sp, #S_LR]		@ calling lr and pc
 	clrex					@ clear the exclusive monitor
diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
index 918875d..cd5fa27 100644
--- a/arch/arm/kernel/fiq.c
+++ b/arch/arm/kernel/fiq.c
@@ -87,7 +87,10 @@ void set_fiq_handler(void *start, unsigned int length)
 	void *base = vectors_page;
 	unsigned offset = FIQ_OFFSET;
 
+	pax_open_kernel();
 	memcpy(base + offset, start, length);
+	pax_close_kernel();
+
 	if (!cache_is_vipt_nonaliasing())
 		flush_icache_range((unsigned long)base + offset, offset +
 				   length);
diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
index 2c35f0f..7747ee6 100644
--- a/arch/arm/kernel/head.S
+++ b/arch/arm/kernel/head.S
@@ -437,7 +437,7 @@ __enable_mmu:
 	mov	r5, #(domain_val(DOMAIN_USER, DOMAIN_MANAGER) | \
 		      domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
 		      domain_val(DOMAIN_TABLE, DOMAIN_MANAGER) | \
-		      domain_val(DOMAIN_IO, DOMAIN_CLIENT))
+		      domain_val(DOMAIN_IO, DOMAIN_KERNELCLIENT))
 	mcr	p15, 0, r5, c3, c0, 0		@ load domain access register
 	mcr	p15, 0, r4, c2, c0, 0		@ load page table pointer
 #endif
diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
index 45e4781..8eac93d 100644
--- a/arch/arm/kernel/module.c
+++ b/arch/arm/kernel/module.c
@@ -38,12 +38,39 @@
 #endif
 
 #ifdef CONFIG_MMU
-void *module_alloc(unsigned long size)
+static inline void *__module_alloc(unsigned long size, pgprot_t prot)
 {
+	if (!size || PAGE_ALIGN(size) > MODULES_END - MODULES_VADDR)
+		return NULL;
 	return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
-				GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE,
+				GFP_KERNEL, prot, NUMA_NO_NODE,
 				__builtin_return_address(0));
 }
+
+void *module_alloc(unsigned long size)
+{
+
+#ifdef CONFIG_PAX_KERNEXEC
+	return __module_alloc(size, PAGE_KERNEL);
+#else
+	return __module_alloc(size, PAGE_KERNEL_EXEC);
+#endif
+
+}
+
+#ifdef CONFIG_PAX_KERNEXEC
+void module_free_exec(struct module *mod, void *module_region)
+{
+	module_free(mod, module_region);
+}
+EXPORT_SYMBOL(module_free_exec);
+
+void *module_alloc_exec(unsigned long size)
+{
+	return __module_alloc(size, PAGE_KERNEL_EXEC);
+}
+EXPORT_SYMBOL(module_alloc_exec);
+#endif
 #endif
 
 int
diff --git a/arch/arm/kernel/patch.c b/arch/arm/kernel/patch.c
index 07314af..c46655c 100644
--- a/arch/arm/kernel/patch.c
+++ b/arch/arm/kernel/patch.c
@@ -18,6 +18,7 @@ void __kprobes __patch_text(void *addr, unsigned int insn)
 	bool thumb2 = IS_ENABLED(CONFIG_THUMB2_KERNEL);
 	int size;
 
+	pax_open_kernel();
 	if (thumb2 && __opcode_is_thumb16(insn)) {
 		*(u16 *)addr = __opcode_to_mem_thumb16(insn);
 		size = sizeof(u16);
@@ -39,6 +40,7 @@ void __kprobes __patch_text(void *addr, unsigned int insn)
 		*(u32 *)addr = insn;
 		size = sizeof(u32);
 	}
+	pax_close_kernel();
 
 	flush_icache_range((uintptr_t)(addr),
 			   (uintptr_t)(addr) + size);
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 81ef686..f4130b8 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -212,6 +212,7 @@ void machine_power_off(void)
 
 	if (pm_power_off)
 		pm_power_off();
+	BUG();
 }
 
 /*
@@ -225,7 +226,7 @@ void machine_power_off(void)
  * executing pre-reset code, and using RAM that the primary CPU's code wishes
  * to use. Implementing such co-ordination would be essentially impossible.
  */
-void machine_restart(char *cmd)
+__noreturn void machine_restart(char *cmd)
 {
 	local_irq_disable();
 	smp_send_stop();
@@ -248,8 +249,8 @@ void __show_regs(struct pt_regs *regs)
 
 	show_regs_print_info(KERN_DEFAULT);
 
-	print_symbol("PC is at %s\n", instruction_pointer(regs));
-	print_symbol("LR is at %s\n", regs->ARM_lr);
+	printk("PC is at %pA\n", (void *)instruction_pointer(regs));
+	printk("LR is at %pA\n", (void *)regs->ARM_lr);
 	printk("pc : [<%08lx>]    lr : [<%08lx>]    psr: %08lx\n"
 	       "sp : %08lx  ip : %08lx  fp : %08lx\n",
 		regs->ARM_pc, regs->ARM_lr, regs->ARM_cpsr,
@@ -425,12 +426,6 @@ unsigned long get_wchan(struct task_struct *p)
 	return 0;
 }
 
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long range_end = mm->brk + 0x02000000;
-	return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
-}
-
 #ifdef CONFIG_MMU
 #ifdef CONFIG_KUSER_HELPERS
 /*
@@ -446,7 +441,7 @@ static struct vm_area_struct gate_vma = {
 
 static int __init gate_vma_init(void)
 {
-	gate_vma.vm_page_prot = PAGE_READONLY_EXEC;
+	gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
 	return 0;
 }
 arch_initcall(gate_vma_init);
@@ -472,41 +467,16 @@ int in_gate_area_no_mm(unsigned long addr)
 
 const char *arch_vma_name(struct vm_area_struct *vma)
 {
-	return is_gate_vma(vma) ? "[vectors]" :
-		(vma->vm_mm && vma->vm_start == vma->vm_mm->context.sigpage) ?
-		 "[sigpage]" : NULL;
+	return is_gate_vma(vma) ? "[vectors]" : NULL;
 }
 
-static struct page *signal_page;
-extern struct page *get_signal_page(void);
-
 int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 {
 	struct mm_struct *mm = current->mm;
-	unsigned long addr;
-	int ret;
-
-	if (!signal_page)
-		signal_page = get_signal_page();
-	if (!signal_page)
-		return -ENOMEM;
 
 	down_write(&mm->mmap_sem);
-	addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
-	if (IS_ERR_VALUE(addr)) {
-		ret = addr;
-		goto up_fail;
-	}
-
-	ret = install_special_mapping(mm, addr, PAGE_SIZE,
-		VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC,
-		&signal_page);
-
-	if (ret == 0)
-		mm->context.sigpage = addr;
-
- up_fail:
+	mm->context.sigpage = (PAGE_OFFSET + (get_random_int() % 0x3FFEFFE0)) & 0xFFFFFFFC;
 	up_write(&mm->mmap_sem);
-	return ret;
+	return 0;
 }
 #endif
diff --git a/arch/arm/kernel/psci.c b/arch/arm/kernel/psci.c
index f73891b..cf3004e 100644
--- a/arch/arm/kernel/psci.c
+++ b/arch/arm/kernel/psci.c
@@ -28,7 +28,7 @@
 #include <asm/psci.h>
 #include <asm/system_misc.h>
 
-struct psci_operations psci_ops;
+struct psci_operations psci_ops __read_only;
 
 static int (*invoke_psci_fn)(u32, u32, u32, u32);
 typedef int (*psci_initcall_t)(const struct device_node *);
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index 0c27ed6..b67388e 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -928,10 +928,19 @@ static void tracehook_report_syscall(struct pt_regs *regs,
 	regs->ARM_ip = ip;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno)
 {
 	current_thread_info()->syscall = scno;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	/* Do the secure computing check first; failures should be fast. */
 	if (secure_computing(scno) == -1)
 		return -1;
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 8a16ee5..4f560e5 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -104,21 +104,23 @@ EXPORT_SYMBOL(elf_hwcap);
 unsigned int elf_hwcap2 __read_mostly;
 EXPORT_SYMBOL(elf_hwcap2);
 
+pteval_t __supported_pte_mask __read_only;
+pmdval_t __supported_pmd_mask __read_only;
 
 #ifdef MULTI_CPU
-struct processor processor __read_mostly;
+struct processor processor __read_only;
 #endif
 #ifdef MULTI_TLB
-struct cpu_tlb_fns cpu_tlb __read_mostly;
+struct cpu_tlb_fns cpu_tlb __read_only;
 #endif
 #ifdef MULTI_USER
-struct cpu_user_fns cpu_user __read_mostly;
+struct cpu_user_fns cpu_user __read_only;
 #endif
 #ifdef MULTI_CACHE
-struct cpu_cache_fns cpu_cache __read_mostly;
+struct cpu_cache_fns cpu_cache __read_only;
 #endif
 #ifdef CONFIG_OUTER_CACHE
-struct outer_cache_fns outer_cache __read_mostly;
+struct outer_cache_fns outer_cache __read_only;
 EXPORT_SYMBOL(outer_cache);
 #endif
 
@@ -251,9 +253,13 @@ static int __get_cpu_architecture(void)
 		asm("mrc	p15, 0, %0, c0, c1, 4"
 		    : "=r" (mmfr0));
 		if ((mmfr0 & 0x0000000f) >= 0x00000003 ||
-		    (mmfr0 & 0x000000f0) >= 0x00000030)
+		    (mmfr0 & 0x000000f0) >= 0x00000030) {
 			cpu_arch = CPU_ARCH_ARMv7;
-		else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
+			if ((mmfr0 & 0x0000000f) == 0x00000005 || (mmfr0 & 0x0000000f) == 0x00000004) {
+				__supported_pte_mask |= L_PTE_PXN;
+				__supported_pmd_mask |= PMD_PXNTABLE;
+			}
+		} else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
 			 (mmfr0 & 0x000000f0) == 0x00000020)
 			cpu_arch = CPU_ARCH_ARMv6;
 		else
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index bd19834..e4d8c66 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -24,8 +24,6 @@
 
 extern const unsigned long sigreturn_codes[7];
 
-static unsigned long signal_return_offset;
-
 #ifdef CONFIG_CRUNCH
 static int preserve_crunch_context(struct crunch_sigframe __user *frame)
 {
@@ -396,8 +394,7 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
 			 * except when the MPU has protected the vectors
 			 * page from PL0
 			 */
-			retcode = mm->context.sigpage + signal_return_offset +
-				  (idx << 2) + thumb;
+			retcode = mm->context.sigpage + (idx << 2) + thumb;
 		} else
 #endif
 		{
@@ -604,33 +601,3 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
 	} while (thread_flags & _TIF_WORK_MASK);
 	return 0;
 }
-
-struct page *get_signal_page(void)
-{
-	unsigned long ptr;
-	unsigned offset;
-	struct page *page;
-	void *addr;
-
-	page = alloc_pages(GFP_KERNEL, 0);
-
-	if (!page)
-		return NULL;
-
-	addr = page_address(page);
-
-	/* Give the signal return code some randomness */
-	offset = 0x200 + (get_random_int() & 0x7fc);
-	signal_return_offset = offset;
-
-	/*
-	 * Copy signal return handlers into the vector page, and
-	 * set sigreturn to be a pointer to these.
-	 */
-	memcpy(addr + offset, sigreturn_codes, sizeof(sigreturn_codes));
-
-	ptr = (unsigned long)addr + offset;
-	flush_icache_range(ptr, ptr + sizeof(sigreturn_codes));
-
-	return page;
-}
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 7c4fada..8581286 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -73,7 +73,7 @@ enum ipi_msg_type {
 
 static DECLARE_COMPLETION(cpu_running);
 
-static struct smp_operations smp_ops;
+static struct smp_operations smp_ops __read_only;
 
 void __init smp_set_ops(struct smp_operations *ops)
 {
diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c
index 7a3be1d..b00c7de 100644
--- a/arch/arm/kernel/tcm.c
+++ b/arch/arm/kernel/tcm.c
@@ -61,7 +61,7 @@ static struct map_desc itcm_iomap[] __initdata = {
 		.virtual	= ITCM_OFFSET,
 		.pfn		= __phys_to_pfn(ITCM_OFFSET),
 		.length		= 0,
-		.type		= MT_MEMORY_RWX_ITCM,
+		.type		= MT_MEMORY_RX_ITCM,
 	}
 };
 
@@ -267,7 +267,9 @@ no_dtcm:
 		start = &__sitcm_text;
 		end   = &__eitcm_text;
 		ram   = &__itcm_start;
+		pax_open_kernel();
 		memcpy(start, ram, itcm_code_sz);
+		pax_close_kernel();
 		pr_debug("CPU ITCM: copied code from %p - %p\n",
 			 start, end);
 		itcm_present = true;
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index abd2fc0..895dbb6 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -62,7 +62,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
 void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
 {
 #ifdef CONFIG_KALLSYMS
-	printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
+	printk("[<%08lx>] (%pA) from [<%08lx>] (%pA)\n", where, (void *)where, from, (void *)from);
 #else
 	printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
 #endif
@@ -264,6 +264,8 @@ static arch_spinlock_t die_lock = __ARCH_SPIN_LOCK_UNLOCKED;
 static int die_owner = -1;
 static unsigned int die_nest_count;
 
+extern void gr_handle_kernel_exploit(void);
+
 static unsigned long oops_begin(void)
 {
 	int cpu;
@@ -306,6 +308,9 @@ static void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
 		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception");
+
+	gr_handle_kernel_exploit();
+
 	if (signr)
 		do_exit(signr);
 }
@@ -643,7 +648,9 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
 			 * The user helper at 0xffff0fe0 must be used instead.
 			 * (see entry-armv.S for details)
 			 */
+			pax_open_kernel();
 			*((unsigned int *)0xffff0ff0) = regs->ARM_r0;
+			pax_close_kernel();
 		}
 		return 0;
 
@@ -900,7 +907,11 @@ void __init early_trap_init(void *vectors_base)
 	kuser_init(vectors_base);
 
 	flush_icache_range(vectors, vectors + PAGE_SIZE * 2);
-	modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
+
+#ifndef CONFIG_PAX_MEMORY_UDEREF
+	modify_domain(DOMAIN_USER, DOMAIN_USERCLIENT);
+#endif
+
 #else /* ifndef CONFIG_CPU_V7M */
 	/*
 	 * on V7-M there is no need to copy the vector table to a dedicated
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 7bcee5c..e2f3249 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -8,7 +8,11 @@
 #include <asm/thread_info.h>
 #include <asm/memory.h>
 #include <asm/page.h>
-	
+
+#ifdef CONFIG_PAX_KERNEXEC
+#include <asm/pgtable.h>
+#endif
+
 #define PROC_INFO							\
 	. = ALIGN(4);							\
 	VMLINUX_SYMBOL(__proc_info_begin) = .;				\
@@ -34,7 +38,7 @@
 #endif
 
 #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
-	defined(CONFIG_GENERIC_BUG)
+	defined(CONFIG_GENERIC_BUG) || defined(CONFIG_PAX_REFCOUNT)
 #define ARM_EXIT_KEEP(x)	x
 #define ARM_EXIT_DISCARD(x)
 #else
@@ -90,6 +94,11 @@ SECTIONS
 		_text = .;
 		HEAD_TEXT
 	}
+
+#ifdef CONFIG_PAX_KERNEXEC
+	. = ALIGN(1<<SECTION_SHIFT);
+#endif
+
 	.text : {			/* Real text segment		*/
 		_stext = .;		/* Text and read-only data	*/
 			__exception_text_start = .;
@@ -112,6 +121,8 @@ SECTIONS
 			ARM_CPU_KEEP(PROC_INFO)
 	}
 
+	_etext = .;			/* End of text section */
+
 	RO_DATA(PAGE_SIZE)
 
 	. = ALIGN(4);
@@ -142,7 +153,9 @@ SECTIONS
 
 	NOTES
 
-	_etext = .;			/* End of text and rodata section */
+#ifdef CONFIG_PAX_KERNEXEC
+	. = ALIGN(1<<SECTION_SHIFT);
+#endif
 
 #ifndef CONFIG_XIP_KERNEL
 	. = ALIGN(PAGE_SIZE);
@@ -220,6 +233,11 @@ SECTIONS
 	. = PAGE_OFFSET + TEXT_OFFSET;
 #else
 	__init_end = .;
+
+#ifdef CONFIG_PAX_KERNEXEC
+	. = ALIGN(1<<SECTION_SHIFT);
+#endif
+
 	. = ALIGN(THREAD_SIZE);
 	__data_loc = .;
 #endif
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 3c82b37..69fa3d2 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -57,7 +57,7 @@ static unsigned long hyp_default_vectors;
 static DEFINE_PER_CPU(struct kvm_vcpu *, kvm_arm_running_vcpu);
 
 /* The VMID used in the VTTBR */
-static atomic64_t kvm_vmid_gen = ATOMIC64_INIT(1);
+static atomic64_unchecked_t kvm_vmid_gen = ATOMIC64_INIT(1);
 static u8 kvm_next_vmid;
 static DEFINE_SPINLOCK(kvm_vmid_lock);
 
@@ -409,7 +409,7 @@ void force_vm_exit(const cpumask_t *mask)
  */
 static bool need_new_vmid_gen(struct kvm *kvm)
 {
-	return unlikely(kvm->arch.vmid_gen != atomic64_read(&kvm_vmid_gen));
+	return unlikely(kvm->arch.vmid_gen != atomic64_read_unchecked(&kvm_vmid_gen));
 }
 
 /**
@@ -442,7 +442,7 @@ static void update_vttbr(struct kvm *kvm)
 
 	/* First user of a new VMID generation? */
 	if (unlikely(kvm_next_vmid == 0)) {
-		atomic64_inc(&kvm_vmid_gen);
+		atomic64_inc_unchecked(&kvm_vmid_gen);
 		kvm_next_vmid = 1;
 
 		/*
@@ -459,7 +459,7 @@ static void update_vttbr(struct kvm *kvm)
 		kvm_call_hyp(__kvm_flush_vm_context);
 	}
 
-	kvm->arch.vmid_gen = atomic64_read(&kvm_vmid_gen);
+	kvm->arch.vmid_gen = atomic64_read_unchecked(&kvm_vmid_gen);
 	kvm->arch.vmid = kvm_next_vmid;
 	kvm_next_vmid++;
 
@@ -1034,7 +1034,7 @@ static void check_kvm_target_cpu(void *ret)
 /**
  * Initialize Hyp-mode and memory mappings on all CPUs.
  */
-int kvm_arch_init(void *opaque)
+int kvm_arch_init(const void *opaque)
 {
 	int err;
 	int ret, cpu;
diff --git a/arch/arm/lib/clear_user.S b/arch/arm/lib/clear_user.S
index 14a0d98..7771a7d 100644
--- a/arch/arm/lib/clear_user.S
+++ b/arch/arm/lib/clear_user.S
@@ -12,14 +12,14 @@
 
 		.text
 
-/* Prototype: int __clear_user(void *addr, size_t sz)
+/* Prototype: int ___clear_user(void *addr, size_t sz)
  * Purpose  : clear some user memory
  * Params   : addr - user memory address to clear
  *          : sz   - number of bytes to clear
  * Returns  : number of bytes NOT cleared
  */
 ENTRY(__clear_user_std)
-WEAK(__clear_user)
+WEAK(___clear_user)
 		stmfd	sp!, {r1, lr}
 		mov	r2, #0
 		cmp	r1, #4
@@ -44,7 +44,7 @@ WEAK(__clear_user)
 USER(		strnebt	r2, [r0])
 		mov	r0, #0
 		ldmfd	sp!, {r1, pc}
-ENDPROC(__clear_user)
+ENDPROC(___clear_user)
 ENDPROC(__clear_user_std)
 
 		.pushsection .fixup,"ax"
diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
index 66a477a..bee61d3 100644
--- a/arch/arm/lib/copy_from_user.S
+++ b/arch/arm/lib/copy_from_user.S
@@ -16,7 +16,7 @@
 /*
  * Prototype:
  *
- *	size_t __copy_from_user(void *to, const void *from, size_t n)
+ *	size_t ___copy_from_user(void *to, const void *from, size_t n)
  *
  * Purpose:
  *
@@ -84,11 +84,11 @@
 
 	.text
 
-ENTRY(__copy_from_user)
+ENTRY(___copy_from_user)
 
 #include "copy_template.S"
 
-ENDPROC(__copy_from_user)
+ENDPROC(___copy_from_user)
 
 	.pushsection .fixup,"ax"
 	.align 0
diff --git a/arch/arm/lib/copy_page.S b/arch/arm/lib/copy_page.S
index 6ee2f67..d1cce76 100644
--- a/arch/arm/lib/copy_page.S
+++ b/arch/arm/lib/copy_page.S
@@ -10,6 +10,7 @@
  *  ASM optimised string functions
  */
 #include <linux/linkage.h>
+#include <linux/const.h>
 #include <asm/assembler.h>
 #include <asm/asm-offsets.h>
 #include <asm/cache.h>
diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S
index d066df6..df28194 100644
--- a/arch/arm/lib/copy_to_user.S
+++ b/arch/arm/lib/copy_to_user.S
@@ -16,7 +16,7 @@
 /*
  * Prototype:
  *
- *	size_t __copy_to_user(void *to, const void *from, size_t n)
+ *	size_t ___copy_to_user(void *to, const void *from, size_t n)
  *
  * Purpose:
  *
@@ -88,11 +88,11 @@
 	.text
 
 ENTRY(__copy_to_user_std)
-WEAK(__copy_to_user)
+WEAK(___copy_to_user)
 
 #include "copy_template.S"
 
-ENDPROC(__copy_to_user)
+ENDPROC(___copy_to_user)
 ENDPROC(__copy_to_user_std)
 
 	.pushsection .fixup,"ax"
diff --git a/arch/arm/lib/csumpartialcopyuser.S b/arch/arm/lib/csumpartialcopyuser.S
index 7d08b43..f7ca7ea 100644
--- a/arch/arm/lib/csumpartialcopyuser.S
+++ b/arch/arm/lib/csumpartialcopyuser.S
@@ -57,8 +57,8 @@
  *  Returns : r0 = checksum, [[sp, #0], #0] = 0 or -EFAULT
  */
 
-#define FN_ENTRY	ENTRY(csum_partial_copy_from_user)
-#define FN_EXIT		ENDPROC(csum_partial_copy_from_user)
+#define FN_ENTRY	ENTRY(__csum_partial_copy_from_user)
+#define FN_EXIT		ENDPROC(__csum_partial_copy_from_user)
 
 #include "csumpartialcopygeneric.S"
 
diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
index 5306de3..aed6d03 100644
--- a/arch/arm/lib/delay.c
+++ b/arch/arm/lib/delay.c
@@ -28,7 +28,7 @@
 /*
  * Default to the loop-based delay implementation.
  */
-struct arm_delay_ops arm_delay_ops = {
+struct arm_delay_ops arm_delay_ops __read_only = {
 	.delay		= __loop_delay,
 	.const_udelay	= __loop_const_udelay,
 	.udelay		= __loop_udelay,
diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
index 3e58d71..029817c 100644
--- a/arch/arm/lib/uaccess_with_memcpy.c
+++ b/arch/arm/lib/uaccess_with_memcpy.c
@@ -136,7 +136,7 @@ out:
 }
 
 unsigned long
-__copy_to_user(void __user *to, const void *from, unsigned long n)
+___copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	/*
 	 * This test is stubbed out of the main function above to keep
@@ -190,7 +190,7 @@ out:
 	return n;
 }
 
-unsigned long __clear_user(void __user *addr, unsigned long n)
+unsigned long ___clear_user(void __user *addr, unsigned long n)
 {
 	/* See rational for this in __copy_to_user() above. */
 	if (n < 64)
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index f7a07a5..258e1f7 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -81,7 +81,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
 
 	desc->pfn = __phys_to_pfn(base);
 	desc->length = length;
-	desc->type = MT_MEMORY_RWX_NONCACHED;
+	desc->type = MT_MEMORY_RW_NONCACHED;
 
 	pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
 		base, length, desc->virtual);
diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index 255f33a..507b157 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -157,7 +157,16 @@ static void clk_gate_fn_disable(struct clk_hw *hw)
 	clk_gate_ops.disable(hw);
 }
 
-static struct clk_ops clk_gate_fn_ops;
+static int clk_gate_fn_is_enabled(struct clk_hw *hw)
+{
+	return clk_gate_ops.is_enabled(hw);
+}
+
+static struct clk_ops clk_gate_fn_ops = {
+	.enable = clk_gate_fn_enable,
+	.disable = clk_gate_fn_disable,
+	.is_enabled = clk_gate_fn_is_enabled,
+};
 
 static struct clk __init *clk_register_gate_fn(struct device *dev,
 		const char *name,
@@ -191,14 +200,6 @@ static struct clk __init *clk_register_gate_fn(struct device *dev,
 	gate_fn->fn_en = fn_en;
 	gate_fn->fn_dis = fn_dis;
 
-	/* ops is the gate ops, but with our enable/disable functions */
-	if (clk_gate_fn_ops.enable != clk_gate_fn_enable ||
-	    clk_gate_fn_ops.disable != clk_gate_fn_disable) {
-		clk_gate_fn_ops = clk_gate_ops;
-		clk_gate_fn_ops.enable = clk_gate_fn_enable;
-		clk_gate_fn_ops.disable = clk_gate_fn_disable;
-	}
-
 	clk = clk_register(dev, &gate_fn->gate.hw);
 
 	if (IS_ERR(clk))
diff --git a/arch/arm/mach-mvebu/coherency.c b/arch/arm/mach-mvebu/coherency.c
index 2bdc323..cf1c607 100644
--- a/arch/arm/mach-mvebu/coherency.c
+++ b/arch/arm/mach-mvebu/coherency.c
@@ -316,7 +316,7 @@ static void __init armada_370_coherency_init(struct device_node *np)
 
 /*
  * This ioremap hook is used on Armada 375/38x to ensure that PCIe
- * memory areas are mapped as MT_UNCACHED instead of MT_DEVICE. This
+ * memory areas are mapped as MT_UNCACHED_RW instead of MT_DEVICE. This
  * is needed as a workaround for a deadlock issue between the PCIe
  * interface and the cache controller.
  */
@@ -329,7 +329,7 @@ armada_pcie_wa_ioremap_caller(phys_addr_t phys_addr, size_t size,
 	mvebu_mbus_get_pcie_mem_aperture(&pcie_mem);
 
 	if (pcie_mem.start <= phys_addr && (phys_addr + size) <= pcie_mem.end)
-		mtype = MT_UNCACHED;
+		mtype = MT_UNCACHED_RW;
 
 	return __arm_ioremap_caller(phys_addr, size, mtype, caller);
 }
diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
index aead77a..a2253fa 100644
--- a/arch/arm/mach-omap2/board-n8x0.c
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -568,7 +568,7 @@ static int n8x0_menelaus_late_init(struct device *dev)
 }
 #endif
 
-static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
+static struct menelaus_platform_data n8x0_menelaus_platform_data __initconst = {
 	.late_init = n8x0_menelaus_late_init,
 };
 
diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
index 8bc1338..8b28b69 100644
--- a/arch/arm/mach-omap2/gpmc.c
+++ b/arch/arm/mach-omap2/gpmc.c
@@ -151,7 +151,6 @@ struct omap3_gpmc_regs {
 };
 
 static struct gpmc_client_irq gpmc_client_irq[GPMC_NR_IRQ];
-static struct irq_chip gpmc_irq_chip;
 static int gpmc_irq_start;
 
 static struct resource	gpmc_mem_root;
@@ -736,6 +735,18 @@ static void gpmc_irq_noop(struct irq_data *data) { }
 
 static unsigned int gpmc_irq_noop_ret(struct irq_data *data) { return 0; }
 
+static struct irq_chip gpmc_irq_chip = {
+	.name = "gpmc",
+	.irq_startup = gpmc_irq_noop_ret,
+	.irq_enable = gpmc_irq_enable,
+	.irq_disable = gpmc_irq_disable,
+	.irq_shutdown = gpmc_irq_noop,
+	.irq_ack = gpmc_irq_noop,
+	.irq_mask = gpmc_irq_noop,
+	.irq_unmask = gpmc_irq_noop,
+
+};
+
 static int gpmc_setup_irq(void)
 {
 	int i;
@@ -750,15 +761,6 @@ static int gpmc_setup_irq(void)
 		return gpmc_irq_start;
 	}
 
-	gpmc_irq_chip.name = "gpmc";
-	gpmc_irq_chip.irq_startup = gpmc_irq_noop_ret;
-	gpmc_irq_chip.irq_enable = gpmc_irq_enable;
-	gpmc_irq_chip.irq_disable = gpmc_irq_disable;
-	gpmc_irq_chip.irq_shutdown = gpmc_irq_noop;
-	gpmc_irq_chip.irq_ack = gpmc_irq_noop;
-	gpmc_irq_chip.irq_mask = gpmc_irq_noop;
-	gpmc_irq_chip.irq_unmask = gpmc_irq_noop;
-
 	gpmc_client_irq[0].bitmask = GPMC_IRQ_FIFOEVENTENABLE;
 	gpmc_client_irq[1].bitmask = GPMC_IRQ_COUNT_EVENT;
 
diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
index 4001325..b14e2a0 100644
--- a/arch/arm/mach-omap2/omap-mpuss-lowpower.c
+++ b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
@@ -84,7 +84,7 @@ struct cpu_pm_ops {
 	int (*finish_suspend)(unsigned long cpu_state);
 	void (*resume)(void);
 	void (*scu_prepare)(unsigned int cpu_id, unsigned int cpu_state);
-};
+} __no_const;
 
 static DEFINE_PER_CPU(struct omap4_cpu_pm_info, omap4_pm_info);
 static struct powerdomain *mpuss_pd;
@@ -102,7 +102,7 @@ static void dummy_cpu_resume(void)
 static void dummy_scu_prepare(unsigned int cpu_id, unsigned int cpu_state)
 {}
 
-struct cpu_pm_ops omap_pm_ops = {
+static struct cpu_pm_ops omap_pm_ops __read_only = {
 	.finish_suspend		= default_finish_suspend,
 	.resume			= dummy_cpu_resume,
 	.scu_prepare		= dummy_scu_prepare,
diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
index 37843a7..a98df13 100644
--- a/arch/arm/mach-omap2/omap-wakeupgen.c
+++ b/arch/arm/mach-omap2/omap-wakeupgen.c
@@ -343,7 +343,7 @@ static int irq_cpu_hotplug_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __refdata irq_hotplug_notifier = {
+static struct notifier_block irq_hotplug_notifier = {
 	.notifier_call = irq_cpu_hotplug_notify,
 };
 
diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index 01ef59d..32ae28a8 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -510,7 +510,7 @@ void omap_device_delete(struct omap_device *od)
 struct platform_device __init *omap_device_build(const char *pdev_name,
 						 int pdev_id,
 						 struct omap_hwmod *oh,
-						 void *pdata, int pdata_len)
+						 const void *pdata, int pdata_len)
 {
 	struct omap_hwmod *ohs[] = { oh };
 
@@ -538,7 +538,7 @@ struct platform_device __init *omap_device_build(const char *pdev_name,
 struct platform_device __init *omap_device_build_ss(const char *pdev_name,
 						    int pdev_id,
 						    struct omap_hwmod **ohs,
-						    int oh_cnt, void *pdata,
+						    int oh_cnt, const void *pdata,
 						    int pdata_len)
 {
 	int ret = -ENOMEM;
diff --git a/arch/arm/mach-omap2/omap_device.h b/arch/arm/mach-omap2/omap_device.h
index 78c02b3..c94109a 100644
--- a/arch/arm/mach-omap2/omap_device.h
+++ b/arch/arm/mach-omap2/omap_device.h
@@ -72,12 +72,12 @@ int omap_device_idle(struct platform_device *pdev);
 /* Core code interface */
 
 struct platform_device *omap_device_build(const char *pdev_name, int pdev_id,
-					  struct omap_hwmod *oh, void *pdata,
+					  struct omap_hwmod *oh, const void *pdata,
 					  int pdata_len);
 
 struct platform_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
 					 struct omap_hwmod **oh, int oh_cnt,
-					 void *pdata, int pdata_len);
+					 const void *pdata, int pdata_len);
 
 struct omap_device *omap_device_alloc(struct platform_device *pdev,
 				      struct omap_hwmod **ohs, int oh_cnt);
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index da1b256..ab2a327 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -194,10 +194,10 @@ struct omap_hwmod_soc_ops {
 	int (*init_clkdm)(struct omap_hwmod *oh);
 	void (*update_context_lost)(struct omap_hwmod *oh);
 	int (*get_context_lost)(struct omap_hwmod *oh);
-};
+} __no_const;
 
 /* soc_ops: adapts the omap_hwmod code to the currently-booted SoC */
-static struct omap_hwmod_soc_ops soc_ops;
+static struct omap_hwmod_soc_ops soc_ops __read_only;
 
 /* omap_hwmod_list contains all registered struct omap_hwmods */
 static LIST_HEAD(omap_hwmod_list);
diff --git a/arch/arm/mach-omap2/powerdomains43xx_data.c b/arch/arm/mach-omap2/powerdomains43xx_data.c
index 95fee54..cfa9cf1 100644
--- a/arch/arm/mach-omap2/powerdomains43xx_data.c
+++ b/arch/arm/mach-omap2/powerdomains43xx_data.c
@@ -10,6 +10,7 @@
 
 #include <linux/kernel.h>
 #include <linux/init.h>
+#include <asm/pgtable.h>
 
 #include "powerdomain.h"
 
@@ -129,7 +130,9 @@ static int am43xx_check_vcvp(void)
 
 void __init am43xx_powerdomains_init(void)
 {
-	omap4_pwrdm_operations.pwrdm_has_voltdm = am43xx_check_vcvp;
+	pax_open_kernel();
+	*(void **)&omap4_pwrdm_operations.pwrdm_has_voltdm = am43xx_check_vcvp;
+	pax_close_kernel();
 	pwrdm_register_platform_funcs(&omap4_pwrdm_operations);
 	pwrdm_register_pwrdms(powerdomains_am43xx);
 	pwrdm_complete_init();
diff --git a/arch/arm/mach-omap2/wd_timer.c b/arch/arm/mach-omap2/wd_timer.c
index 97d6607..8429d14 100644
--- a/arch/arm/mach-omap2/wd_timer.c
+++ b/arch/arm/mach-omap2/wd_timer.c
@@ -110,7 +110,9 @@ static int __init omap_init_wdt(void)
 	struct omap_hwmod *oh;
 	char *oh_name = "wd_timer2";
 	char *dev_name = "omap_wdt";
-	struct omap_wd_timer_platform_data pdata;
+	static struct omap_wd_timer_platform_data pdata = {
+		.read_reset_sources = prm_read_reset_sources
+	};
 
 	if (!cpu_class_is_omap2() || of_have_populated_dt())
 		return 0;
@@ -121,8 +123,6 @@ static int __init omap_init_wdt(void)
 		return -EINVAL;
 	}
 
-	pdata.read_reset_sources = prm_read_reset_sources;
-
 	pdev = omap_device_build(dev_name, id, oh, &pdata,
 				 sizeof(struct omap_wd_timer_platform_data));
 	WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
index b82dcae..44ee5b6 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
@@ -180,7 +180,7 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
 	bool entered_lp2 = false;
 
 	if (tegra_pending_sgi())
-		ACCESS_ONCE(abort_flag) = true;
+		ACCESS_ONCE_RW(abort_flag) = true;
 
 	cpuidle_coupled_parallel_barrier(dev, &abort_barrier);
 
diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h
index 2dea8b5..6499da2 100644
--- a/arch/arm/mach-ux500/setup.h
+++ b/arch/arm/mach-ux500/setup.h
@@ -33,13 +33,6 @@ extern void ux500_timer_init(void);
 	.type		= MT_DEVICE,		\
 }
 
-#define __MEM_DEV_DESC(x, sz)	{		\
-	.virtual	= IO_ADDRESS(x),	\
-	.pfn		= __phys_to_pfn(x),	\
-	.length		= sz,			\
-	.type		= MT_MEMORY_RWX,		\
-}
-
 extern struct smp_operations ux500_smp_ops;
 extern void ux500_cpu_die(unsigned int cpu);
 
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index c348eae..456a1a4 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -446,6 +446,7 @@ config CPU_32v5
 
 config CPU_32v6
 	bool
+	select CPU_USE_DOMAINS if CPU_V6 && MMU && !PAX_KERNEXEC && !PAX_MEMORY_UDEREF
 	select TLS_REG_EMUL if !CPU_32v6K && !MMU
 
 config CPU_32v6K
@@ -600,6 +601,7 @@ config CPU_CP15_MPU
 
 config CPU_USE_DOMAINS
 	bool
+	depends on !ARM_LPAE && !PAX_KERNEXEC && !PAX_MEMORY_UDEREF
 	help
 	  This option enables or disables the use of domain switching
 	  via the set_fs() function.
@@ -799,6 +801,7 @@ config NEED_KUSER_HELPERS
 config KUSER_HELPERS
 	bool "Enable kuser helpers in vector page" if !NEED_KUSER_HELPERS
 	default y
+	depends on !(CPU_V6 || CPU_V6K || CPU_V7) || GRKERNSEC_OLD_ARM_USERLAND
 	help
 	  Warning: disabling this option may break user programs.
 
@@ -811,7 +814,7 @@ config KUSER_HELPERS
 	  See Documentation/arm/kernel_user_helpers.txt for details.
 
 	  However, the fixed address nature of these helpers can be used
-	  by ROP (return orientated programming) authors when creating
+	  by ROP (Return Oriented Programming) authors when creating
 	  exploits.
 
 	  If all of the binaries and libraries which run on your platform
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index b8cb1a2..6a5624a 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -214,10 +214,12 @@ union offset_union {
 #define __get16_unaligned_check(ins,val,addr)			\
 	do {							\
 		unsigned int err = 0, v, a = addr;		\
+		pax_open_userland();				\
 		__get8_unaligned_check(ins,v,a,err);		\
 		val =  v << ((BE) ? 8 : 0);			\
 		__get8_unaligned_check(ins,v,a,err);		\
 		val |= v << ((BE) ? 0 : 8);			\
+		pax_close_userland();				\
 		if (err)					\
 			goto fault;				\
 	} while (0)
@@ -231,6 +233,7 @@ union offset_union {
 #define __get32_unaligned_check(ins,val,addr)			\
 	do {							\
 		unsigned int err = 0, v, a = addr;		\
+		pax_open_userland();				\
 		__get8_unaligned_check(ins,v,a,err);		\
 		val =  v << ((BE) ? 24 :  0);			\
 		__get8_unaligned_check(ins,v,a,err);		\
@@ -239,6 +242,7 @@ union offset_union {
 		val |= v << ((BE) ?  8 : 16);			\
 		__get8_unaligned_check(ins,v,a,err);		\
 		val |= v << ((BE) ?  0 : 24);			\
+		pax_close_userland();				\
 		if (err)					\
 			goto fault;				\
 	} while (0)
@@ -252,6 +256,7 @@ union offset_union {
 #define __put16_unaligned_check(ins,val,addr)			\
 	do {							\
 		unsigned int err = 0, v = val, a = addr;	\
+		pax_open_userland();				\
 		__asm__( FIRST_BYTE_16				\
 	 ARM(	"1:	"ins"	%1, [%2], #1\n"	)		\
 	 THUMB(	"1:	"ins"	%1, [%2]\n"	)		\
@@ -271,6 +276,7 @@ union offset_union {
 		"	.popsection\n"				\
 		: "=r" (err), "=&r" (v), "=&r" (a)		\
 		: "0" (err), "1" (v), "2" (a));			\
+		pax_close_userland();				\
 		if (err)					\
 			goto fault;				\
 	} while (0)
@@ -284,6 +290,7 @@ union offset_union {
 #define __put32_unaligned_check(ins,val,addr)			\
 	do {							\
 		unsigned int err = 0, v = val, a = addr;	\
+		pax_open_userland();				\
 		__asm__( FIRST_BYTE_32				\
 	 ARM(	"1:	"ins"	%1, [%2], #1\n"	)		\
 	 THUMB(	"1:	"ins"	%1, [%2]\n"	)		\
@@ -313,6 +320,7 @@ union offset_union {
 		"	.popsection\n"				\
 		: "=r" (err), "=&r" (v), "=&r" (a)		\
 		: "0" (err), "1" (v), "2" (a));			\
+		pax_close_userland();				\
 		if (err)					\
 			goto fault;				\
 	} while (0)
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 7c3fb41..bfb87d8 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -41,7 +41,7 @@ struct l2c_init_data {
 	void (*fixup)(void __iomem *, u32, struct outer_cache_fns *);
 	void (*save)(void __iomem *);
 	struct outer_cache_fns outer_cache;
-};
+} __do_const;
 
 #define CACHE_LINE_SIZE		32
 
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index 6eb97b3..ac509f6 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -43,7 +43,7 @@
 #define NUM_USER_ASIDS		ASID_FIRST_VERSION
 
 static DEFINE_RAW_SPINLOCK(cpu_asid_lock);
-static atomic64_t asid_generation = ATOMIC64_INIT(ASID_FIRST_VERSION);
+static atomic64_unchecked_t asid_generation = ATOMIC64_INIT(ASID_FIRST_VERSION);
 static DECLARE_BITMAP(asid_map, NUM_USER_ASIDS);
 
 static DEFINE_PER_CPU(atomic64_t, active_asids);
@@ -182,7 +182,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
 {
 	static u32 cur_idx = 1;
 	u64 asid = atomic64_read(&mm->context.id);
-	u64 generation = atomic64_read(&asid_generation);
+	u64 generation = atomic64_read_unchecked(&asid_generation);
 
 	if (asid != 0 && is_reserved_asid(asid)) {
 		/*
@@ -203,7 +203,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
 		 */
 		asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx);
 		if (asid == NUM_USER_ASIDS) {
-			generation = atomic64_add_return(ASID_FIRST_VERSION,
+			generation = atomic64_add_return_unchecked(ASID_FIRST_VERSION,
 							 &asid_generation);
 			flush_context(cpu);
 			asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
@@ -234,14 +234,14 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk)
 	cpu_set_reserved_ttbr0();
 
 	asid = atomic64_read(&mm->context.id);
-	if (!((asid ^ atomic64_read(&asid_generation)) >> ASID_BITS)
+	if (!((asid ^ atomic64_read_unchecked(&asid_generation)) >> ASID_BITS)
 	    && atomic64_xchg(&per_cpu(active_asids, cpu), asid))
 		goto switch_mm_fastpath;
 
 	raw_spin_lock_irqsave(&cpu_asid_lock, flags);
 	/* Check that our ASID belongs to the current generation. */
 	asid = atomic64_read(&mm->context.id);
-	if ((asid ^ atomic64_read(&asid_generation)) >> ASID_BITS) {
+	if ((asid ^ atomic64_read_unchecked(&asid_generation)) >> ASID_BITS) {
 		asid = new_context(mm, cpu);
 		atomic64_set(&mm->context.id, asid);
 	}
diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
index eb8830a..5360ce7 100644
--- a/arch/arm/mm/fault.c
+++ b/arch/arm/mm/fault.c
@@ -25,6 +25,7 @@
 #include <asm/system_misc.h>
 #include <asm/system_info.h>
 #include <asm/tlbflush.h>
+#include <asm/sections.h>
 
 #include "fault.h"
 
@@ -138,6 +139,31 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
 	if (fixup_exception(regs))
 		return;
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (addr < TASK_SIZE) {
+		if (current->signal->curr_ip)
+			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),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
+		else
+			printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to access userland memory at %08lx\n", current->comm, task_pid_nr(current),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
+	}
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+	if ((fsr & FSR_WRITE) &&
+	    (((unsigned long)_stext <= addr && addr < init_mm.end_code) ||
+	     (MODULES_VADDR <= addr && addr < MODULES_END)))
+	{
+		if (current->signal->curr_ip)
+			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),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
+		else
+			printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", current->comm, task_pid_nr(current),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
+	}
+#endif
+
 	/*
 	 * No handler, we'll have to terminate things with extreme prejudice.
 	 */
@@ -174,6 +200,13 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr,
 	}
 #endif
 
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (fsr & FSR_LNX_PF) {
+		pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp);
+		do_group_exit(SIGKILL);
+	}
+#endif
+
 	tsk->thread.address = addr;
 	tsk->thread.error_code = fsr;
 	tsk->thread.trap_no = 14;
@@ -401,6 +434,33 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 }
 #endif					/* CONFIG_MMU */
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 20; i++) {
+		unsigned char c;
+		if (get_user(c, (__force unsigned char __user *)pc+i))
+			printk(KERN_CONT "?? ");
+		else
+			printk(KERN_CONT "%02x ", c);
+	}
+	printk("\n");
+
+	printk(KERN_ERR "PAX: bytes at SP-4: ");
+	for (i = -1; i < 20; i++) {
+		unsigned long c;
+		if (get_user(c, (__force unsigned long __user *)sp+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08lx ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * First Level Translation Fault Handler
  *
@@ -548,9 +608,22 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
 	const struct fsr_info *inf = fsr_info + fsr_fs(fsr);
 	struct siginfo info;
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (addr < TASK_SIZE && is_domain_fault(fsr)) {
+		if (current->signal->curr_ip)
+			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),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
+		else
+			printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to access userland memory at %08lx\n", current->comm, task_pid_nr(current),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
+		goto die;
+	}
+#endif
+
 	if (!inf->fn(addr, fsr & ~FSR_LNX_PF, regs))
 		return;
 
+die:
 	printk(KERN_ALERT "Unhandled fault: %s (0x%03x) at 0x%08lx\n",
 		inf->name, fsr, addr);
 
@@ -574,15 +647,98 @@ hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs *
 	ifsr_info[nr].name = name;
 }
 
+asmlinkage int sys_sigreturn(struct pt_regs *regs);
+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
+
 asmlinkage void __exception
 do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
 {
 	const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr);
 	struct siginfo info;
+	unsigned long pc = instruction_pointer(regs);
+
+	if (user_mode(regs)) {
+		unsigned long sigpage = current->mm->context.sigpage;
+
+		if (sigpage <= pc && pc < sigpage + 7*4) {
+			if (pc < sigpage + 3*4)
+				sys_sigreturn(regs);
+			else
+				sys_rt_sigreturn(regs);
+			return;
+		}
+		if (pc == 0xffff0f60UL) {
+			/*
+			 * PaX: __kuser_cmpxchg64 emulation
+			 */
+			// TODO
+			//regs->ARM_pc = regs->ARM_lr;
+			//return;
+		}
+		if (pc == 0xffff0fa0UL) {
+			/*
+			 * PaX: __kuser_memory_barrier emulation
+			 */
+			// dmb(); implied by the exception
+			regs->ARM_pc = regs->ARM_lr;
+			return;
+		}
+		if (pc == 0xffff0fc0UL) {
+			/*
+			 * PaX: __kuser_cmpxchg emulation
+			 */
+			// TODO
+			//long new;
+			//int op;
+
+			//op = FUTEX_OP_SET << 28;
+			//new = futex_atomic_op_inuser(op, regs->ARM_r2);
+			//regs->ARM_r0 = old != new;
+			//regs->ARM_pc = regs->ARM_lr;
+			//return;
+		}
+		if (pc == 0xffff0fe0UL) {
+			/*
+			 * PaX: __kuser_get_tls emulation
+			 */
+			regs->ARM_r0 = current_thread_info()->tp_value[0];
+			regs->ARM_pc = regs->ARM_lr;
+			return;
+		}
+	}
+
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	else if (is_domain_fault(ifsr) || is_xn_fault(ifsr)) {
+		if (current->signal->curr_ip)
+			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),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()),
+					pc >= TASK_SIZE ? "non-executable kernel" : "userland", pc);
+		else
+			printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to execute %s memory at %08lx\n", current->comm, task_pid_nr(current),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()),
+					pc >= TASK_SIZE ? "non-executable kernel" : "userland", pc);
+		goto die;
+	}
+#endif
+
+#ifdef CONFIG_PAX_REFCOUNT
+	if (fsr_fs(ifsr) == FAULT_CODE_DEBUG) {
+		unsigned int bkpt;
+
+		if (!probe_kernel_address(pc, bkpt) && cpu_to_le32(bkpt) == 0xe12f1073) {
+			current->thread.error_code = ifsr;
+			current->thread.trap_no = 0;
+			pax_report_refcount_overflow(regs);
+			fixup_exception(regs);
+			return;
+		}
+	}
+#endif
 
 	if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
 		return;
 
+die:
 	printk(KERN_ALERT "Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
 		inf->name, ifsr, addr);
 
diff --git a/arch/arm/mm/fault.h b/arch/arm/mm/fault.h
index cf08bdf..772656c 100644
--- a/arch/arm/mm/fault.h
+++ b/arch/arm/mm/fault.h
@@ -3,6 +3,7 @@
 
 /*
  * Fault status register encodings.  We steal bit 31 for our own purposes.
+ * Set when the FSR value is from an instruction fault.
  */
 #define FSR_LNX_PF		(1 << 31)
 #define FSR_WRITE		(1 << 11)
@@ -22,6 +23,17 @@ static inline int fsr_fs(unsigned int fsr)
 }
 #endif
 
+/* valid for LPAE and !LPAE */
+static inline int is_xn_fault(unsigned int fsr)
+{
+	return ((fsr_fs(fsr) & 0x3c) == 0xc);
+}
+
+static inline int is_domain_fault(unsigned int fsr)
+{
+	return ((fsr_fs(fsr) & 0xD) == 0x9);
+}
+
 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
 unsigned long search_exception_table(unsigned long addr);
 
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 659c75d..6f8c029 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -31,6 +31,8 @@
 #include <asm/setup.h>
 #include <asm/tlb.h>
 #include <asm/fixmap.h>
+#include <asm/system_info.h>
+#include <asm/cp15.h>
 
 #include <asm/mach/arch.h>
 #include <asm/mach/map.h>
@@ -619,7 +621,46 @@ void free_initmem(void)
 {
 #ifdef CONFIG_HAVE_TCM
 	extern char __tcm_start, __tcm_end;
+#endif
 
+#ifdef CONFIG_PAX_KERNEXEC
+	unsigned long addr;
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+	int cpu_arch = cpu_architecture();
+	unsigned int cr = get_cr();
+
+	if (cpu_arch >= CPU_ARCH_ARMv6 && (cr & CR_XP)) {
+		/* make pages tables, etc before .text NX */
+		for (addr = PAGE_OFFSET; addr < (unsigned long)_stext; addr += SECTION_SIZE) {
+			pgd = pgd_offset_k(addr);
+			pud = pud_offset(pgd, addr);
+			pmd = pmd_offset(pud, addr);
+			__section_update(pmd, addr, PMD_SECT_XN);
+		}
+		/* make init NX */
+		for (addr = (unsigned long)__init_begin; addr < (unsigned long)_sdata; addr += SECTION_SIZE) {
+			pgd = pgd_offset_k(addr);
+			pud = pud_offset(pgd, addr);
+			pmd = pmd_offset(pud, addr);
+			__section_update(pmd, addr, PMD_SECT_XN);
+		}
+		/* make kernel code/rodata RX */
+		for (addr = (unsigned long)_stext; addr < (unsigned long)__init_begin; addr += SECTION_SIZE) {
+			pgd = pgd_offset_k(addr);
+			pud = pud_offset(pgd, addr);
+			pmd = pmd_offset(pud, addr);
+#ifdef CONFIG_ARM_LPAE
+			__section_update(pmd, addr, PMD_SECT_RDONLY);
+#else
+			__section_update(pmd, addr, PMD_SECT_APX|PMD_SECT_AP_WRITE);
+#endif
+		}
+	}
+#endif
+
+#ifdef CONFIG_HAVE_TCM
 	poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start);
 	free_reserved_area(&__tcm_start, &__tcm_end, -1, "TCM link");
 #endif
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index d1e5ad7..84dcbf2 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -392,9 +392,9 @@ __arm_ioremap_exec(phys_addr_t phys_addr, size_t size, bool cached)
 	unsigned int mtype;
 
 	if (cached)
-		mtype = MT_MEMORY_RWX;
+		mtype = MT_MEMORY_RX;
 	else
-		mtype = MT_MEMORY_RWX_NONCACHED;
+		mtype = MT_MEMORY_RX_NONCACHED;
 
 	return __arm_ioremap_caller(phys_addr, size, mtype,
 			__builtin_return_address(0));
diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index 5e85ed3..b10a7ed 100644
--- a/arch/arm/mm/mmap.c
+++ b/arch/arm/mm/mmap.c
@@ -59,6 +59,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	struct vm_area_struct *vma;
 	int do_align = 0;
 	int aliasing = cache_is_vipt_aliasing();
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	/*
@@ -81,6 +82,10 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	if (len > TASK_SIZE)
 		return -ENOMEM;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
@@ -88,8 +93,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -99,6 +103,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	info.high_limit = TASK_SIZE;
 	info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 
@@ -112,6 +117,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	unsigned long addr = addr0;
 	int do_align = 0;
 	int aliasing = cache_is_vipt_aliasing();
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	/*
@@ -132,6 +138,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		return addr;
 	}
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* requesting a specific address */
 	if (addr) {
 		if (do_align)
@@ -139,8 +149,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		else
 			addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-				(!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -150,6 +159,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	info.high_limit = mm->mmap_base;
 	info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	/*
@@ -173,6 +183,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 {
 	unsigned long random_factor = 0UL;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* 8 bits of randomness in 20 address space bits */
 	if ((current->flags & PF_RANDOMIZE) &&
 	    !(current->personality & ADDR_NO_RANDOMIZE))
@@ -180,9 +194,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 
 	if (mmap_is_legacy()) {
 		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 	} else {
 		mm->mmap_base = mmap_base(random_factor);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 	}
 }
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 6e3ba8d..9cbb4d7 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -40,6 +40,22 @@
 #include "mm.h"
 #include "tcm.h"
 
+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+void modify_domain(unsigned int dom, unsigned int type)
+{
+	struct thread_info *thread = current_thread_info();
+	unsigned int domain = thread->cpu_domain;
+	/*
+	 * DOMAIN_MANAGER might be defined to some other value,
+	 * use the arch-defined constant
+	 */
+	domain &= ~domain_val(dom, 3);
+	thread->cpu_domain = domain | domain_val(dom, type);
+	set_domain(thread->cpu_domain);
+}
+EXPORT_SYMBOL(modify_domain);
+#endif
+
 /*
  * empty_zero_page is a special page that is used for
  * zero-initialized data and COW.
@@ -239,7 +255,15 @@ __setup("noalign", noalign_setup);
 #define PROT_PTE_S2_DEVICE	PROT_PTE_DEVICE
 #define PROT_SECT_DEVICE	PMD_TYPE_SECT|PMD_SECT_AP_WRITE
 
-static struct mem_type mem_types[] = {
+#ifdef CONFIG_PAX_KERNEXEC
+#define L_PTE_KERNEXEC		L_PTE_RDONLY
+#define PMD_SECT_KERNEXEC	PMD_SECT_RDONLY
+#else
+#define L_PTE_KERNEXEC		L_PTE_DIRTY
+#define PMD_SECT_KERNEXEC	PMD_SECT_AP_WRITE
+#endif
+
+static struct mem_type mem_types[] __read_only = {
 	[MT_DEVICE] = {		  /* Strongly ordered / ARMv6 shared device */
 		.prot_pte	= PROT_PTE_DEVICE | L_PTE_MT_DEV_SHARED |
 				  L_PTE_SHARED,
@@ -268,19 +292,19 @@ static struct mem_type mem_types[] = {
 		.prot_sect	= PROT_SECT_DEVICE,
 		.domain		= DOMAIN_IO,
 	},
-	[MT_UNCACHED] = {
+	[MT_UNCACHED_RW] = {
 		.prot_pte	= PROT_PTE_DEVICE,
 		.prot_l1	= PMD_TYPE_TABLE,
 		.prot_sect	= PMD_TYPE_SECT | PMD_SECT_XN,
 		.domain		= DOMAIN_IO,
 	},
-	[MT_CACHECLEAN] = {
-		.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
+	[MT_CACHECLEAN_RO] = {
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_RDONLY,
 		.domain    = DOMAIN_KERNEL,
 	},
 #ifndef CONFIG_ARM_LPAE
-	[MT_MINICLEAN] = {
-		.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_MINICACHE,
+	[MT_MINICLEAN_RO] = {
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_MINICACHE | PMD_SECT_XN | PMD_SECT_RDONLY,
 		.domain    = DOMAIN_KERNEL,
 	},
 #endif
@@ -288,15 +312,15 @@ static struct mem_type mem_types[] = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
 				L_PTE_RDONLY,
 		.prot_l1   = PMD_TYPE_TABLE,
-		.domain    = DOMAIN_USER,
+		.domain    = DOMAIN_VECTORS,
 	},
 	[MT_HIGH_VECTORS] = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
 				L_PTE_USER | L_PTE_RDONLY,
 		.prot_l1   = PMD_TYPE_TABLE,
-		.domain    = DOMAIN_USER,
+		.domain    = DOMAIN_VECTORS,
 	},
-	[MT_MEMORY_RWX] = {
+	[__MT_MEMORY_RWX] = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
 		.prot_l1   = PMD_TYPE_TABLE,
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
@@ -309,17 +333,30 @@ static struct mem_type mem_types[] = {
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
 		.domain    = DOMAIN_KERNEL,
 	},
-	[MT_ROM] = {
-		.prot_sect = PMD_TYPE_SECT,
+	[MT_MEMORY_RX] = {
+		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_KERNEXEC,
+		.prot_l1   = PMD_TYPE_TABLE,
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_KERNEXEC,
+		.domain	   = DOMAIN_KERNEL,
+	},
+	[MT_ROM_RX] = {
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_RDONLY,
 		.domain    = DOMAIN_KERNEL,
 	},
-	[MT_MEMORY_RWX_NONCACHED] = {
+	[MT_MEMORY_RW_NONCACHED] = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
 				L_PTE_MT_BUFFERABLE,
 		.prot_l1   = PMD_TYPE_TABLE,
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
 		.domain    = DOMAIN_KERNEL,
 	},
+	[MT_MEMORY_RX_NONCACHED] = {
+		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_KERNEXEC |
+				L_PTE_MT_BUFFERABLE,
+		.prot_l1   = PMD_TYPE_TABLE,
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_KERNEXEC,
+		.domain    = DOMAIN_KERNEL,
+	},
 	[MT_MEMORY_RW_DTCM] = {
 		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
 				L_PTE_XN,
@@ -327,9 +364,10 @@ static struct mem_type mem_types[] = {
 		.prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
 		.domain    = DOMAIN_KERNEL,
 	},
-	[MT_MEMORY_RWX_ITCM] = {
-		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
+	[MT_MEMORY_RX_ITCM] = {
+		.prot_pte  = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_KERNEXEC,
 		.prot_l1   = PMD_TYPE_TABLE,
+		.prot_sect = PMD_TYPE_SECT | PMD_SECT_KERNEXEC,
 		.domain    = DOMAIN_KERNEL,
 	},
 	[MT_MEMORY_RW_SO] = {
@@ -547,9 +585,14 @@ static void __init build_mem_type_table(void)
 		 * Mark cache clean areas and XIP ROM read only
 		 * from SVC mode and no access from userspace.
 		 */
-		mem_types[MT_ROM].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
-		mem_types[MT_MINICLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
-		mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+		mem_types[MT_ROM_RX].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+#ifdef CONFIG_PAX_KERNEXEC
+		mem_types[MT_MEMORY_RX].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+		mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+		mem_types[MT_MEMORY_RX_ITCM].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+#endif
+		mem_types[MT_MINICLEAN_RO].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
+		mem_types[MT_CACHECLEAN_RO].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
 #endif
 
 		/*
@@ -566,13 +609,17 @@ static void __init build_mem_type_table(void)
 			mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED;
 			mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S;
 			mem_types[MT_DEVICE_CACHED].prot_pte |= L_PTE_SHARED;
-			mem_types[MT_MEMORY_RWX].prot_sect |= PMD_SECT_S;
-			mem_types[MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED;
+			mem_types[__MT_MEMORY_RWX].prot_sect |= PMD_SECT_S;
+			mem_types[__MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED;
 			mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_S;
 			mem_types[MT_MEMORY_RW].prot_pte |= L_PTE_SHARED;
+			mem_types[MT_MEMORY_RX].prot_sect |= PMD_SECT_S;
+			mem_types[MT_MEMORY_RX].prot_pte |= L_PTE_SHARED;
 			mem_types[MT_MEMORY_DMA_READY].prot_pte |= L_PTE_SHARED;
-			mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_S;
-			mem_types[MT_MEMORY_RWX_NONCACHED].prot_pte |= L_PTE_SHARED;
+			mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |= PMD_SECT_S;
+			mem_types[MT_MEMORY_RW_NONCACHED].prot_pte |= L_PTE_SHARED;
+			mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= PMD_SECT_S;
+			mem_types[MT_MEMORY_RX_NONCACHED].prot_pte |= L_PTE_SHARED;
 		}
 	}
 
@@ -583,15 +630,20 @@ static void __init build_mem_type_table(void)
 	if (cpu_arch >= CPU_ARCH_ARMv6) {
 		if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) {
 			/* Non-cacheable Normal is XCB = 001 */
-			mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
+			mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |=
+				PMD_SECT_BUFFERED;
+			mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |=
 				PMD_SECT_BUFFERED;
 		} else {
 			/* For both ARMv6 and non-TEX-remapping ARMv7 */
-			mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
+			mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |=
+				PMD_SECT_TEX(1);
+			mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |=
 				PMD_SECT_TEX(1);
 		}
 	} else {
-		mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
+		mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
+		mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
 	}
 
 #ifdef CONFIG_ARM_LPAE
@@ -607,6 +659,8 @@ static void __init build_mem_type_table(void)
 	vecs_pgprot |= PTE_EXT_AF;
 #endif
 
+	user_pgprot |= __supported_pte_mask;
+
 	for (i = 0; i < 16; i++) {
 		pteval_t v = pgprot_val(protection_map[i]);
 		protection_map[i] = __pgprot(v | user_pgprot);
@@ -624,21 +678,24 @@ static void __init build_mem_type_table(void)
 
 	mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
 	mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;
-	mem_types[MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
-	mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot;
+	mem_types[__MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
+	mem_types[__MT_MEMORY_RWX].prot_pte |= kern_pgprot;
 	mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd;
 	mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot;
+	mem_types[MT_MEMORY_RX].prot_sect |= ecc_mask | cp->pmd;
+	mem_types[MT_MEMORY_RX].prot_pte |= kern_pgprot;
 	mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot;
-	mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask;
-	mem_types[MT_ROM].prot_sect |= cp->pmd;
+	mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |= ecc_mask;
+	mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= ecc_mask;
+	mem_types[MT_ROM_RX].prot_sect |= cp->pmd;
 
 	switch (cp->pmd) {
 	case PMD_SECT_WT:
-		mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WT;
+		mem_types[MT_CACHECLEAN_RO].prot_sect |= PMD_SECT_WT;
 		break;
 	case PMD_SECT_WB:
 	case PMD_SECT_WBWA:
-		mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WB;
+		mem_types[MT_CACHECLEAN_RO].prot_sect |= PMD_SECT_WB;
 		break;
 	}
 	pr_info("Memory policy: %sData cache %s\n",
@@ -856,7 +913,7 @@ static void __init create_mapping(struct map_desc *md)
 		return;
 	}
 
-	if ((md->type == MT_DEVICE || md->type == MT_ROM) &&
+	if ((md->type == MT_DEVICE || md->type == MT_ROM_RX) &&
 	    md->virtual >= PAGE_OFFSET &&
 	    (md->virtual < VMALLOC_START || md->virtual >= VMALLOC_END)) {
 		printk(KERN_WARNING "BUG: mapping for 0x%08llx"
@@ -1224,18 +1281,15 @@ void __init arm_mm_memblock_reserve(void)
  * called function.  This means you can't use any function or debugging
  * method which may touch any device, otherwise the kernel _will_ crash.
  */
+
+static char vectors[PAGE_SIZE * 2] __read_only __aligned(PAGE_SIZE);
+
 static void __init devicemaps_init(const struct machine_desc *mdesc)
 {
 	struct map_desc map;
 	unsigned long addr;
-	void *vectors;
 
-	/*
-	 * Allocate the vector page early.
-	 */
-	vectors = early_alloc(PAGE_SIZE * 2);
-
-	early_trap_init(vectors);
+	early_trap_init(&vectors);
 
 	for (addr = VMALLOC_START; addr; addr += PMD_SIZE)
 		pmd_clear(pmd_off_k(addr));
@@ -1248,7 +1302,7 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
 	map.pfn = __phys_to_pfn(CONFIG_XIP_PHYS_ADDR & SECTION_MASK);
 	map.virtual = MODULES_VADDR;
 	map.length = ((unsigned long)_etext - map.virtual + ~SECTION_MASK) & SECTION_MASK;
-	map.type = MT_ROM;
+	map.type = MT_ROM_RX;
 	create_mapping(&map);
 #endif
 
@@ -1259,14 +1313,14 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
 	map.pfn = __phys_to_pfn(FLUSH_BASE_PHYS);
 	map.virtual = FLUSH_BASE;
 	map.length = SZ_1M;
-	map.type = MT_CACHECLEAN;
+	map.type = MT_CACHECLEAN_RO;
 	create_mapping(&map);
 #endif
 #ifdef FLUSH_BASE_MINICACHE
 	map.pfn = __phys_to_pfn(FLUSH_BASE_PHYS + SZ_1M);
 	map.virtual = FLUSH_BASE_MINICACHE;
 	map.length = SZ_1M;
-	map.type = MT_MINICLEAN;
+	map.type = MT_MINICLEAN_RO;
 	create_mapping(&map);
 #endif
 
@@ -1275,7 +1329,7 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
 	 * location (0xffff0000).  If we aren't using high-vectors, also
 	 * create a mapping at the low-vectors virtual address.
 	 */
-	map.pfn = __phys_to_pfn(virt_to_phys(vectors));
+	map.pfn = __phys_to_pfn(virt_to_phys(&vectors));
 	map.virtual = 0xffff0000;
 	map.length = PAGE_SIZE;
 #ifdef CONFIG_KUSER_HELPERS
@@ -1335,8 +1389,10 @@ static void __init kmap_init(void)
 static void __init map_lowmem(void)
 {
 	struct memblock_region *reg;
+#ifndef CONFIG_PAX_KERNEXEC
 	unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
 	unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
+#endif
 
 	/* Map all the lowmem memory banks. */
 	for_each_memblock(memory, reg) {
@@ -1349,11 +1405,48 @@ static void __init map_lowmem(void)
 		if (start >= end)
 			break;
 
+#ifdef CONFIG_PAX_KERNEXEC
+		map.pfn = __phys_to_pfn(start);
+		map.virtual = __phys_to_virt(start);
+		map.length = end - start;
+
+		if (map.virtual <= (unsigned long)_stext && ((unsigned long)_end < (map.virtual + map.length))) {
+			struct map_desc kernel;
+			struct map_desc initmap;
+
+			/* when freeing initmem we will make this RW */
+			initmap.pfn = __phys_to_pfn(__pa(__init_begin));
+			initmap.virtual = (unsigned long)__init_begin;
+			initmap.length = _sdata - __init_begin;
+			initmap.type = __MT_MEMORY_RWX;
+			create_mapping(&initmap);
+
+			/* when freeing initmem we will make this RX */
+			kernel.pfn = __phys_to_pfn(__pa(_stext));
+			kernel.virtual = (unsigned long)_stext;
+			kernel.length = __init_begin - _stext;
+			kernel.type = __MT_MEMORY_RWX;
+			create_mapping(&kernel);
+
+			if (map.virtual < (unsigned long)_stext) {
+				map.length = (unsigned long)_stext - map.virtual;
+				map.type = __MT_MEMORY_RWX;
+				create_mapping(&map);
+			}
+
+			map.pfn = __phys_to_pfn(__pa(_sdata));
+			map.virtual = (unsigned long)_sdata;
+			map.length = end - __pa(_sdata);
+		}
+
+		map.type = MT_MEMORY_RW;
+		create_mapping(&map);
+#else
 		if (end < kernel_x_start || start >= kernel_x_end) {
 			map.pfn = __phys_to_pfn(start);
 			map.virtual = __phys_to_virt(start);
 			map.length = end - start;
-			map.type = MT_MEMORY_RWX;
+			map.type = __MT_MEMORY_RWX;
 
 			create_mapping(&map);
 		} else {
@@ -1370,7 +1463,7 @@ static void __init map_lowmem(void)
 			map.pfn = __phys_to_pfn(kernel_x_start);
 			map.virtual = __phys_to_virt(kernel_x_start);
 			map.length = kernel_x_end - kernel_x_start;
-			map.type = MT_MEMORY_RWX;
+			map.type = __MT_MEMORY_RWX;
 
 			create_mapping(&map);
 
@@ -1383,6 +1476,7 @@ static void __init map_lowmem(void)
 				create_mapping(&map);
 			}
 		}
+#endif
 	}
 }
 
diff --git a/arch/arm/plat-iop/setup.c b/arch/arm/plat-iop/setup.c
index 5b217f4..c23f40e 100644
--- a/arch/arm/plat-iop/setup.c
+++ b/arch/arm/plat-iop/setup.c
@@ -24,7 +24,7 @@ static struct map_desc iop3xx_std_desc[] __initdata = {
 		.virtual	= IOP3XX_PERIPHERAL_VIRT_BASE,
 		.pfn		= __phys_to_pfn(IOP3XX_PERIPHERAL_PHYS_BASE),
 		.length		= IOP3XX_PERIPHERAL_SIZE,
-		.type		= MT_UNCACHED,
+		.type		= MT_UNCACHED_RW,
 	 },
 };
 
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index a5bc92d..0bb4730 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -93,6 +93,8 @@ void __init omap_map_sram(unsigned long start, unsigned long size,
 	 * Looks like we need to preserve some bootloader code at the
 	 * beginning of SRAM for jumping to flash for reboot to work...
 	 */
+	pax_open_kernel();
 	memset_io(omap_sram_base + omap_sram_skip, 0,
 		  omap_sram_size - omap_sram_skip);
+	pax_close_kernel();
 }
diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h
index ce6d763..cfea917 100644
--- a/arch/arm/plat-samsung/include/plat/dma-ops.h
+++ b/arch/arm/plat-samsung/include/plat/dma-ops.h
@@ -47,7 +47,7 @@ struct samsung_dma_ops {
 	int (*started)(unsigned ch);
 	int (*flush)(unsigned ch);
 	int (*stop)(unsigned ch);
-};
+} __no_const;
 
 extern void *samsung_dmadev_get_ops(void);
 extern void *s3c_dma_get_ops(void);
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
index 6389d60..b5d3bdd 100644
--- a/arch/arm64/include/asm/barrier.h
+++ b/arch/arm64/include/asm/barrier.h
@@ -41,7 +41,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	barrier();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index 3bf8f4e..5dd5491 100644
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -99,6 +99,7 @@ static inline void set_fs(mm_segment_t fs)
 	flag;								\
 })
 
+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
 #define access_ok(type, addr, size)	__range_ok(addr, size)
 #define user_addr_max			get_fs
 
diff --git a/arch/avr32/include/asm/cache.h b/arch/avr32/include/asm/cache.h
index c3a58a1..78fbf54 100644
--- a/arch/avr32/include/asm/cache.h
+++ b/arch/avr32/include/asm/cache.h
@@ -1,8 +1,10 @@
 #ifndef __ASM_AVR32_CACHE_H
 #define __ASM_AVR32_CACHE_H
 
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT 5
-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 /*
  * Memory returned by kmalloc() may be used for DMA, so we must make
diff --git a/arch/avr32/include/asm/elf.h b/arch/avr32/include/asm/elf.h
index d232888..87c8df1 100644
--- a/arch/avr32/include/asm/elf.h
+++ b/arch/avr32/include/asm/elf.h
@@ -84,8 +84,14 @@ typedef struct user_fpu_struct elf_fpregset_t;
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#define ELF_ET_DYN_BASE         (2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x00001000UL
+
+#define PAX_DELTA_MMAP_LEN	15
+#define PAX_DELTA_STACK_LEN	15
+#endif
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports.  This could be done in user space,
diff --git a/arch/avr32/include/asm/kmap_types.h b/arch/avr32/include/asm/kmap_types.h
index 479330b..53717a8 100644
--- a/arch/avr32/include/asm/kmap_types.h
+++ b/arch/avr32/include/asm/kmap_types.h
@@ -2,9 +2,9 @@
 #define __ASM_AVR32_KMAP_TYPES_H
 
 #ifdef CONFIG_DEBUG_HIGHMEM
-# define KM_TYPE_NR 29
+# define KM_TYPE_NR 30
 #else
-# define KM_TYPE_NR 14
+# define KM_TYPE_NR 15
 #endif
 
 #endif /* __ASM_AVR32_KMAP_TYPES_H */
diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
index 0eca933..eb78c7b 100644
--- a/arch/avr32/mm/fault.c
+++ b/arch/avr32/mm/fault.c
@@ -41,6 +41,23 @@ static inline int notify_page_fault(struct pt_regs *regs, int trap)
 
 int exception_trace = 1;
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 20; i++) {
+		unsigned char c;
+		if (get_user(c, (unsigned char *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%02x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * This routine handles page faults. It determines the address and the
  * problem, and then passes it off to one of the appropriate routines.
@@ -176,6 +193,16 @@ bad_area:
 	up_read(&mm->mmap_sem);
 
 	if (user_mode(regs)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (mm->pax_flags & MF_PAX_PAGEEXEC) {
+			if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) {
+				pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp);
+				do_group_exit(SIGKILL);
+			}
+		}
+#endif
+
 		if (exception_trace && printk_ratelimit())
 			printk("%s%s[%d]: segfault at %08lx pc %08lx "
 			       "sp %08lx ecr %lu\n",
diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h
index 568885a..f8008df 100644
--- a/arch/blackfin/include/asm/cache.h
+++ b/arch/blackfin/include/asm/cache.h
@@ -7,6 +7,7 @@
 #ifndef __ARCH_BLACKFIN_CACHE_H
 #define __ARCH_BLACKFIN_CACHE_H
 
+#include <linux/const.h>
 #include <linux/linkage.h>	/* for asmlinkage */
 
 /*
@@ -14,7 +15,7 @@
  * Blackfin loads 32 bytes for cache
  */
 #define L1_CACHE_SHIFT	5
-#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES	(_AC(1,UL) << L1_CACHE_SHIFT)
 #define SMP_CACHE_BYTES	L1_CACHE_BYTES
 
 #define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
diff --git a/arch/cris/include/arch-v10/arch/cache.h b/arch/cris/include/arch-v10/arch/cache.h
index aea2718..3639a60 100644
--- a/arch/cris/include/arch-v10/arch/cache.h
+++ b/arch/cris/include/arch-v10/arch/cache.h
@@ -1,8 +1,9 @@
 #ifndef _ASM_ARCH_CACHE_H
 #define _ASM_ARCH_CACHE_H
 
+#include <linux/const.h>
 /* Etrax 100LX have 32-byte cache-lines. */
-#define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif /* _ASM_ARCH_CACHE_H */
diff --git a/arch/cris/include/arch-v32/arch/cache.h b/arch/cris/include/arch-v32/arch/cache.h
index 7caf25d..ee65ac5 100644
--- a/arch/cris/include/arch-v32/arch/cache.h
+++ b/arch/cris/include/arch-v32/arch/cache.h
@@ -1,11 +1,12 @@
 #ifndef _ASM_CRIS_ARCH_CACHE_H
 #define _ASM_CRIS_ARCH_CACHE_H
 
+#include <linux/const.h>
 #include <arch/hwregs/dma.h>
 
 /* A cache-line is 32 bytes. */
-#define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
 
diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h
index f6c3a16..cd422a4 100644
--- a/arch/frv/include/asm/atomic.h
+++ b/arch/frv/include/asm/atomic.h
@@ -181,6 +181,16 @@ static inline void atomic64_dec(atomic64_t *v)
 #define atomic64_cmpxchg(v, old, new)	(__cmpxchg_64(old, new, &(v)->counter))
 #define atomic64_xchg(v, new)		(__xchg_64(new, &(v)->counter))
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
 {
 	int c, old;
diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h
index 2797163..c2a401d 100644
--- a/arch/frv/include/asm/cache.h
+++ b/arch/frv/include/asm/cache.h
@@ -12,10 +12,11 @@
 #ifndef __ASM_CACHE_H
 #define __ASM_CACHE_H
 
+#include <linux/const.h>
 
 /* bytes per L1 cache line */
 #define L1_CACHE_SHIFT		(CONFIG_FRV_L1_CACHE_SHIFT)
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __cacheline_aligned	__attribute__((aligned(L1_CACHE_BYTES)))
 #define ____cacheline_aligned	__attribute__((aligned(L1_CACHE_BYTES)))
diff --git a/arch/frv/include/asm/kmap_types.h b/arch/frv/include/asm/kmap_types.h
index 43901f2..0d8b865 100644
--- a/arch/frv/include/asm/kmap_types.h
+++ b/arch/frv/include/asm/kmap_types.h
@@ -2,6 +2,6 @@
 #ifndef _ASM_KMAP_TYPES_H
 #define _ASM_KMAP_TYPES_H
 
-#define KM_TYPE_NR 17
+#define KM_TYPE_NR 18
 
 #endif
diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c
index 836f147..4cf23f5 100644
--- a/arch/frv/mm/elf-fdpic.c
+++ b/arch/frv/mm/elf-fdpic.c
@@ -61,6 +61,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 {
 	struct vm_area_struct *vma;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
 
 	if (len > TASK_SIZE)
 		return -ENOMEM;
@@ -73,8 +74,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(current->mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			goto success;
 	}
 
@@ -85,6 +85,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 	info.high_limit = (current->mm->start_stack - 0x00200000);
 	info.align_mask = 0;
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 	if (!(addr & ~PAGE_MASK))
 		goto success;
diff --git a/arch/hexagon/include/asm/cache.h b/arch/hexagon/include/asm/cache.h
index f4ca594..adc72fd6 100644
--- a/arch/hexagon/include/asm/cache.h
+++ b/arch/hexagon/include/asm/cache.h
@@ -21,9 +21,11 @@
 #ifndef __ASM_CACHE_H
 #define __ASM_CACHE_H
 
+#include <linux/const.h>
+
 /* Bytes per L1 cache line */
-#define L1_CACHE_SHIFT		(5)
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_SHIFT		5
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __cacheline_aligned	__aligned(L1_CACHE_BYTES)
 #define ____cacheline_aligned	__aligned(L1_CACHE_BYTES)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 2f3abcf..e63c7fa 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -547,6 +547,7 @@ source "drivers/sn/Kconfig"
 config KEXEC
 	bool "kexec system call"
 	depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
+	depends on !GRKERNSEC_KMEM
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
index f37238f..810b95f 100644
--- a/arch/ia64/Makefile
+++ b/arch/ia64/Makefile
@@ -99,5 +99,6 @@ endef
 archprepare: make_nr_irqs_h FORCE
 PHONY += make_nr_irqs_h FORCE
 
+make_nr_irqs_h: KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
 make_nr_irqs_h: FORCE
 	$(Q)$(MAKE) $(build)=arch/ia64/kernel include/generated/nr-irqs.h
diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
index 0f8bf48..40ea950 100644
--- a/arch/ia64/include/asm/atomic.h
+++ b/arch/ia64/include/asm/atomic.h
@@ -209,4 +209,14 @@ atomic64_add_negative (__s64 i, atomic64_t *v)
 #define atomic64_inc(v)			atomic64_add(1, (v))
 #define atomic64_dec(v)			atomic64_sub(1, (v))
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* _ASM_IA64_ATOMIC_H */
diff --git a/arch/ia64/include/asm/barrier.h b/arch/ia64/include/asm/barrier.h
index a48957c..e097b56 100644
--- a/arch/ia64/include/asm/barrier.h
+++ b/arch/ia64/include/asm/barrier.h
@@ -67,7 +67,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	barrier();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/ia64/include/asm/cache.h b/arch/ia64/include/asm/cache.h
index 988254a..e1ee885 100644
--- a/arch/ia64/include/asm/cache.h
+++ b/arch/ia64/include/asm/cache.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_IA64_CACHE_H
 #define _ASM_IA64_CACHE_H
 
+#include <linux/const.h>
 
 /*
  * Copyright (C) 1998-2000 Hewlett-Packard Co
@@ -9,7 +10,7 @@
 
 /* Bytes per L1 (data) cache line.  */
 #define L1_CACHE_SHIFT		CONFIG_IA64_L1_CACHE_SHIFT
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #ifdef CONFIG_SMP
 # define SMP_CACHE_SHIFT	L1_CACHE_SHIFT
diff --git a/arch/ia64/include/asm/elf.h b/arch/ia64/include/asm/elf.h
index 5a83c5c..4d7f553 100644
--- a/arch/ia64/include/asm/elf.h
+++ b/arch/ia64/include/asm/elf.h
@@ -42,6 +42,13 @@
  */
 #define ELF_ET_DYN_BASE		(TASK_UNMAPPED_BASE + 0x800000000UL)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL)
+
+#define PAX_DELTA_MMAP_LEN	(current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13)
+#define PAX_DELTA_STACK_LEN	(current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13)
+#endif
+
 #define PT_IA_64_UNWIND		0x70000001
 
 /* IA-64 relocations: */
diff --git a/arch/ia64/include/asm/pgalloc.h b/arch/ia64/include/asm/pgalloc.h
index 5767cdf..7462574 100644
--- a/arch/ia64/include/asm/pgalloc.h
+++ b/arch/ia64/include/asm/pgalloc.h
@@ -39,6 +39,12 @@ pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
 	pgd_val(*pgd_entry) = __pa(pud);
 }
 
+static inline void
+pgd_populate_kernel(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
+{
+	pgd_populate(mm, pgd_entry, pud);
+}
+
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	return quicklist_alloc(0, GFP_KERNEL, NULL);
@@ -57,6 +63,12 @@ pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
 	pud_val(*pud_entry) = __pa(pmd);
 }
 
+static inline void
+pud_populate_kernel(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
+{
+	pud_populate(mm, pud_entry, pmd);
+}
+
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	return quicklist_alloc(0, GFP_KERNEL, NULL);
diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
index 7935115..c0eca6a 100644
--- a/arch/ia64/include/asm/pgtable.h
+++ b/arch/ia64/include/asm/pgtable.h
@@ -12,7 +12,7 @@
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
-
+#include <linux/const.h>
 #include <asm/mman.h>
 #include <asm/page.h>
 #include <asm/processor.h>
@@ -142,6 +142,17 @@
 #define PAGE_READONLY	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
 #define PAGE_COPY	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
 #define PAGE_COPY_EXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+# define PAGE_SHARED_NOEXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW)
+# define PAGE_READONLY_NOEXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
+# define PAGE_COPY_NOEXEC	__pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+#endif
+
 #define PAGE_GATE	__pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX)
 #define PAGE_KERNEL	__pgprot(__DIRTY_BITS  | _PAGE_PL_0 | _PAGE_AR_RWX)
 #define PAGE_KERNELRX	__pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX)
diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h
index 45698cd..e8e2dbc 100644
--- a/arch/ia64/include/asm/spinlock.h
+++ b/arch/ia64/include/asm/spinlock.h
@@ -71,7 +71,7 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock)
 	unsigned short	*p = (unsigned short *)&lock->lock + 1, tmp;
 
 	asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p));
-	ACCESS_ONCE(*p) = (tmp + 2) & ~1;
+	ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1;
 }
 
 static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock)
diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
index 449c8c0..3d4b1e9 100644
--- a/arch/ia64/include/asm/uaccess.h
+++ b/arch/ia64/include/asm/uaccess.h
@@ -70,6 +70,7 @@
 	 && ((segment).seg == KERNEL_DS.seg						\
 	     || likely(REGION_OFFSET((unsigned long) (addr)) < RGN_MAP_LIMIT)));	\
 })
+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
 #define access_ok(type, addr, size)	__access_ok((addr), (size), get_fs())
 
 /*
@@ -240,12 +241,24 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use
 static inline unsigned long
 __copy_to_user (void __user *to, const void *from, unsigned long count)
 {
+	if (count > INT_MAX)
+		return count;
+
+	if (!__builtin_constant_p(count))
+		check_object_size(from, count, true);
+
 	return __copy_user(to, (__force void __user *) from, count);
 }
 
 static inline unsigned long
 __copy_from_user (void *to, const void __user *from, unsigned long count)
 {
+	if (count > INT_MAX)
+		return count;
+
+	if (!__builtin_constant_p(count))
+		check_object_size(to, count, false);
+
 	return __copy_user((__force void __user *) to, from, count);
 }
 
@@ -255,10 +268,13 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
 ({											\
 	void __user *__cu_to = (to);							\
 	const void *__cu_from = (from);							\
-	long __cu_len = (n);								\
+	unsigned long __cu_len = (n);							\
 											\
-	if (__access_ok(__cu_to, __cu_len, get_fs()))					\
+	if (__cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs())) {		\
+		if (!__builtin_constant_p(n))						\
+			check_object_size(__cu_from, __cu_len, true);			\
 		__cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len);	\
+	}										\
 	__cu_len;									\
 })
 
@@ -266,11 +282,14 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
 ({											\
 	void *__cu_to = (to);								\
 	const void __user *__cu_from = (from);						\
-	long __cu_len = (n);								\
+	unsigned long __cu_len = (n);							\
 											\
 	__chk_user_ptr(__cu_from);							\
-	if (__access_ok(__cu_from, __cu_len, get_fs()))					\
+	if (__cu_len <= INT_MAX  && __access_ok(__cu_from, __cu_len, get_fs())) {	\
+		if (!__builtin_constant_p(n))						\
+			check_object_size(__cu_to, __cu_len, false);			\
 		__cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len);	\
+	}										\
 	__cu_len;									\
 })
 
diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
index 24603be..948052d 100644
--- a/arch/ia64/kernel/module.c
+++ b/arch/ia64/kernel/module.c
@@ -307,8 +307,7 @@ plt_target (struct plt_entry *plt)
 void
 module_free (struct module *mod, void *module_region)
 {
-	if (mod && mod->arch.init_unw_table &&
-	    module_region == mod->module_init) {
+	if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) {
 		unw_remove_unwind_table(mod->arch.init_unw_table);
 		mod->arch.init_unw_table = NULL;
 	}
@@ -494,15 +493,39 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
 }
 
 static inline int
+in_init_rx (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx;
+}
+
+static inline int
+in_init_rw (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw;
+}
+
+static inline int
 in_init (const struct module *mod, uint64_t addr)
 {
-	return addr - (uint64_t) mod->module_init < mod->init_size;
+	return in_init_rx(mod, addr) || in_init_rw(mod, addr);
+}
+
+static inline int
+in_core_rx (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx;
+}
+
+static inline int
+in_core_rw (const struct module *mod, uint64_t addr)
+{
+	return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw;
 }
 
 static inline int
 in_core (const struct module *mod, uint64_t addr)
 {
-	return addr - (uint64_t) mod->module_core < mod->core_size;
+	return in_core_rx(mod, addr) || in_core_rw(mod, addr);
 }
 
 static inline int
@@ -685,7 +708,14 @@ do_reloc (struct module *mod, uint8_t r_type, Elf64_Sym *sym, uint64_t addend,
 		break;
 
 	      case RV_BDREL:
-		val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core);
+		if (in_init_rx(mod, val))
+			val -= (uint64_t) mod->module_init_rx;
+		else if (in_init_rw(mod, val))
+			val -= (uint64_t) mod->module_init_rw;
+		else if (in_core_rx(mod, val))
+			val -= (uint64_t) mod->module_core_rx;
+		else if (in_core_rw(mod, val))
+			val -= (uint64_t) mod->module_core_rw;
 		break;
 
 	      case RV_LTV:
@@ -820,15 +850,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symind
 		 *     addresses have been selected...
 		 */
 		uint64_t gp;
-		if (mod->core_size > MAX_LTOFF)
+		if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF)
 			/*
 			 * This takes advantage of fact that SHF_ARCH_SMALL gets allocated
 			 * at the end of the module.
 			 */
-			gp = mod->core_size - MAX_LTOFF / 2;
+			gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2;
 		else
-			gp = mod->core_size / 2;
-		gp = (uint64_t) mod->module_core + ((gp + 7) & -8);
+			gp = (mod->core_size_rx + mod->core_size_rw) / 2;
+		gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8);
 		mod->arch.gp = gp;
 		DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp);
 	}
diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
index c39c3cd..3c77738 100644
--- a/arch/ia64/kernel/palinfo.c
+++ b/arch/ia64/kernel/palinfo.c
@@ -980,7 +980,7 @@ static int palinfo_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __refdata palinfo_cpu_notifier =
+static struct notifier_block palinfo_cpu_notifier =
 {
 	.notifier_call = palinfo_cpu_callback,
 	.priority = 0,
diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
index 41e33f8..65180b2a 100644
--- a/arch/ia64/kernel/sys_ia64.c
+++ b/arch/ia64/kernel/sys_ia64.c
@@ -28,6 +28,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
 	unsigned long align_mask = 0;
 	struct mm_struct *mm = current->mm;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 
 	if (len > RGN_MAP_LIMIT)
 		return -ENOMEM;
@@ -43,6 +44,13 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
 	if (REGION_NUMBER(addr) == RGN_HPAGE)
 		addr = 0;
 #endif
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		addr = mm->free_area_cache;
+	else
+#endif
+
 	if (!addr)
 		addr = TASK_UNMAPPED_BASE;
 
@@ -61,6 +69,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
 	info.high_limit = TASK_SIZE;
 	info.align_mask = align_mask;
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index 84f8a52..7c76178 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -192,7 +192,7 @@ SECTIONS {
 	/* Per-cpu data: */
 	. = ALIGN(PERCPU_PAGE_SIZE);
 	PERCPU_VADDR(SMP_CACHE_BYTES, PERCPU_ADDR, :percpu)
-	__phys_per_cpu_start = __per_cpu_load;
+	__phys_per_cpu_start = per_cpu_load;
 	/*
 	 * ensure percpu data fits
 	 * into percpu page size
diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
index 7225dad..2a7c8256 100644
--- a/arch/ia64/mm/fault.c
+++ b/arch/ia64/mm/fault.c
@@ -72,6 +72,23 @@ mapped_kernel_page_is_present (unsigned long address)
 	return pte_present(pte);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 8; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 #	define VM_READ_BIT	0
 #	define VM_WRITE_BIT	1
 #	define VM_EXEC_BIT	2
@@ -151,8 +168,21 @@ retry:
 	if (((isr >> IA64_ISR_R_BIT) & 1UL) && (!(vma->vm_flags & (VM_READ | VM_WRITE))))
 		goto bad_area;
 
-	if ((vma->vm_flags & mask) != mask)
+	if ((vma->vm_flags & mask) != mask) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) {
+			if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip)
+				goto bad_area;
+
+			up_read(&mm->mmap_sem);
+			pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		goto bad_area;
+	}
 
 	/*
 	 * If for any reason at all we couldn't handle the fault, make
diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
index 76069c1..c2aa816 100644
--- a/arch/ia64/mm/hugetlbpage.c
+++ b/arch/ia64/mm/hugetlbpage.c
@@ -149,6 +149,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u
 		unsigned long pgoff, unsigned long flags)
 {
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(current->mm, file, flags);
 
 	if (len > RGN_MAP_LIMIT)
 		return -ENOMEM;
@@ -172,6 +173,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u
 	info.high_limit = HPAGE_REGION_BASE + RGN_MAP_LIMIT;
 	info.align_mask = PAGE_MASK & (HPAGE_SIZE - 1);
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 
diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
index 25c3502..560dae7 100644
--- a/arch/ia64/mm/init.c
+++ b/arch/ia64/mm/init.c
@@ -120,6 +120,19 @@ ia64_init_addr_space (void)
 		vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
 		vma->vm_end = vma->vm_start + PAGE_SIZE;
 		vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (current->mm->pax_flags & MF_PAX_PAGEEXEC) {
+			vma->vm_flags &= ~VM_EXEC;
+
+#ifdef CONFIG_PAX_MPROTECT
+			if (current->mm->pax_flags & MF_PAX_MPROTECT)
+				vma->vm_flags &= ~VM_MAYEXEC;
+#endif
+
+		}
+#endif
+
 		vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 		down_write(&current->mm->mmap_sem);
 		if (insert_vm_struct(current->mm, vma)) {
diff --git a/arch/m32r/include/asm/cache.h b/arch/m32r/include/asm/cache.h
index 40b3ee9..8c2c112 100644
--- a/arch/m32r/include/asm/cache.h
+++ b/arch/m32r/include/asm/cache.h
@@ -1,8 +1,10 @@
 #ifndef _ASM_M32R_CACHE_H
 #define _ASM_M32R_CACHE_H
 
+#include <linux/const.h>
+
 /* L1 cache line size */
 #define L1_CACHE_SHIFT		4
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif  /* _ASM_M32R_CACHE_H */
diff --git a/arch/m32r/lib/usercopy.c b/arch/m32r/lib/usercopy.c
index 82abd15..d95ae5d 100644
--- a/arch/m32r/lib/usercopy.c
+++ b/arch/m32r/lib/usercopy.c
@@ -14,6 +14,9 @@
 unsigned long
 __generic_copy_to_user(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	prefetch(from);
 	if (access_ok(VERIFY_WRITE, to, n))
 		__copy_user(to,from,n);
@@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, const void *from, unsigned long n)
 unsigned long
 __generic_copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	prefetchw(to);
 	if (access_ok(VERIFY_READ, from, n))
 		__copy_user_zeroing(to,from,n);
diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
index 0395c51..5f26031 100644
--- a/arch/m68k/include/asm/cache.h
+++ b/arch/m68k/include/asm/cache.h
@@ -4,9 +4,11 @@
 #ifndef __ARCH_M68K_CACHE_H
 #define __ARCH_M68K_CACHE_H
 
+#include <linux/const.h>
+
 /* bytes per L1 cache line */
 #define        L1_CACHE_SHIFT  4
-#define        L1_CACHE_BYTES  (1<< L1_CACHE_SHIFT)
+#define        L1_CACHE_BYTES  (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define ARCH_DMA_MINALIGN	L1_CACHE_BYTES
 
diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h
index c7591e8..ecef036 100644
--- a/arch/metag/include/asm/barrier.h
+++ b/arch/metag/include/asm/barrier.h
@@ -89,7 +89,7 @@ static inline void fence(void)
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	smp_mb();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
index 3c52fa6..11b2ad8 100644
--- a/arch/metag/mm/hugetlbpage.c
+++ b/arch/metag/mm/hugetlbpage.c
@@ -200,6 +200,7 @@ hugetlb_get_unmapped_area_new_pmd(unsigned long len)
 	info.high_limit = TASK_SIZE;
 	info.align_mask = PAGE_MASK & HUGEPT_MASK;
 	info.align_offset = 0;
+	info.threadstack_offset = 0;
 	return vm_unmapped_area(&info);
 }
 
diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h
index 4efe96a..60e8699 100644
--- a/arch/microblaze/include/asm/cache.h
+++ b/arch/microblaze/include/asm/cache.h
@@ -13,11 +13,12 @@
 #ifndef _ASM_MICROBLAZE_CACHE_H
 #define _ASM_MICROBLAZE_CACHE_H
 
+#include <linux/const.h>
 #include <asm/registers.h>
 
 #define L1_CACHE_SHIFT 5
 /* word-granular cache in microblaze */
-#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES	(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define SMP_CACHE_BYTES	L1_CACHE_BYTES
 
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 4e238e6..7c9ed92 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2392,6 +2392,7 @@ source "kernel/Kconfig.preempt"
 
 config KEXEC
 	bool "Kexec system call"
+	depends on !GRKERNSEC_KMEM
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
diff --git a/arch/mips/cavium-octeon/dma-octeon.c b/arch/mips/cavium-octeon/dma-octeon.c
index 02f2444..506969c 100644
--- a/arch/mips/cavium-octeon/dma-octeon.c
+++ b/arch/mips/cavium-octeon/dma-octeon.c
@@ -199,7 +199,7 @@ static void octeon_dma_free_coherent(struct device *dev, size_t size,
 	if (dma_release_from_coherent(dev, order, vaddr))
 		return;
 
-	swiotlb_free_coherent(dev, size, vaddr, dma_handle);
+	swiotlb_free_coherent(dev, size, vaddr, dma_handle, attrs);
 }
 
 static dma_addr_t octeon_unity_phys_to_dma(struct device *dev, phys_addr_t paddr)
diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 37b2bef..02122b8 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -21,15 +21,39 @@
 #include <asm/cmpxchg.h>
 #include <asm/war.h>
 
+#ifdef CONFIG_GENERIC_ATOMIC64
+#include <asm-generic/atomic64.h>
+#endif
+
 #define ATOMIC_INIT(i)	  { (i) }
 
+#ifdef CONFIG_64BIT
+#define _ASM_EXTABLE(from, to)		\
+"	.section __ex_table,\"a\"\n"	\
+"	.dword	" #from ", " #to"\n"	\
+"	.previous\n"
+#else
+#define _ASM_EXTABLE(from, to)		\
+"	.section __ex_table,\"a\"\n"	\
+"	.word	" #from ", " #to"\n"	\
+"	.previous\n"
+#endif
+
 /*
  * atomic_read - read atomic variable
  * @v: pointer of type atomic_t
  *
  * Atomically reads the value of @v.
  */
-#define atomic_read(v)		(*(volatile int *)&(v)->counter)
+static inline int atomic_read(const atomic_t *v)
+{
+	return (*(volatile const int *) &v->counter);
+}
+
+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return (*(volatile const int *) &v->counter);
+}
 
 /*
  * atomic_set - set atomic variable
@@ -38,7 +62,15 @@
  *
  * Atomically sets the value of @v to @i.
  */
-#define atomic_set(v, i)		((v)->counter = (i))
+static inline void atomic_set(atomic_t *v, int i)
+{
+	v->counter = i;
+}
+
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
 
 /*
  * atomic_add - add integer to atomic variable
@@ -47,7 +79,67 @@
  *
  * Atomically adds @i to @v.
  */
-static __inline__ void atomic_add(int i, atomic_t * v)
+static __inline__ void atomic_add(int i, atomic_t *v)
+{
+	int temp;
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%0, %1		# atomic_add		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"2:	add	%0, %2					\n"
+#else
+		"	addu	%0, %2					\n"
+#endif
+		"	sc	%0, %1					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%0, %1		# atomic_add		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Exception on overflow. */
+		"2:	add	%0, %2					\n"
+#else
+		"	addu	%0, %2					\n"
+#endif
+		"	sc	%0, %1					\n"
+		"	beqz	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	add	%0, %1					\n"
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#else
+		"	addu	%0, %1					\n"
+#endif
+		: "+r" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+}
+
+static __inline__ void atomic_add_unchecked(int i, atomic_unchecked_t *v)
 {
 	if (kernel_uses_llsc && R10000_LLSC_WAR) {
 		int temp;
@@ -90,7 +182,67 @@ static __inline__ void atomic_add(int i, atomic_t * v)
  *
  * Atomically subtracts @i from @v.
  */
-static __inline__ void atomic_sub(int i, atomic_t * v)
+static __inline__ void atomic_sub(int i, atomic_t *v)
+{
+	int temp;
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%0, %1		# atomic64_sub		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Exception on overflow. */
+		"2:	sub	%0, %2					\n"
+#else
+		"	subu	%0, %2					\n"
+#endif
+		"	sc	%0, %1					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%0, %1		# atomic64_sub		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Exception on overflow. */
+		"2:	sub	%0, %2					\n"
+#else
+		"	subu	%0, %2					\n"
+#endif
+		"	sc	%0, %1					\n"
+		"	beqz	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	sub	%0, %1					\n"
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#else
+		"	subu	%0, %1					\n"
+#endif
+		: "+r" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+}
+
+static __inline__ void atomic_sub_unchecked(long i, atomic_unchecked_t *v)
 {
 	if (kernel_uses_llsc && R10000_LLSC_WAR) {
 		int temp;
@@ -129,7 +281,93 @@ static __inline__ void atomic_sub(int i, atomic_t * v)
 /*
  * Same as above, but return the result value
  */
-static __inline__ int atomic_add_return(int i, atomic_t * v)
+static __inline__ int atomic_add_return(int i, atomic_t *v)
+{
+	int result;
+	int temp;
+
+	smp_mb__before_llsc();
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%1, %2		# atomic_add_return	\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	add	%0, %1, %3				\n"
+#else
+		"	addu	%0, %1, %3				\n"
+#endif
+		"	sc	%0, %2					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	b	4f					\n"
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	addu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%1, %2	# atomic_add_return		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	add	%0, %1, %3				\n"
+#else
+		"	addu	%0, %1, %3				\n"
+#endif
+		"	sc	%0, %2					\n"
+		"	bnez	%0, 4f					\n"
+		"	b	1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	addu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+		"	lw	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	add	%0, %2					\n"
+#else
+		"	addu	%0, %2					\n"
+#endif
+		"	sw	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Note: Dest reg is not modified on overflow */
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#endif
+		: "=&r" (result), "+m" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+
+	smp_llsc_mb();
+
+	return result;
+}
+
+static __inline__ int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
 {
 	int result;
 
@@ -178,7 +416,93 @@ static __inline__ int atomic_add_return(int i, atomic_t * v)
 	return result;
 }
 
-static __inline__ int atomic_sub_return(int i, atomic_t * v)
+static __inline__ int atomic_sub_return(int i, atomic_t *v)
+{
+	int result;
+	int temp;
+
+	smp_mb__before_llsc();
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%1, %2		# atomic_sub_return	\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	sub	%0, %1, %3				\n"
+#else
+		"	subu	%0, %1, %3				\n"
+#endif
+		"	sc	%0, %2					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	b	4f					\n"
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	subu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "=m" (v->counter)
+		: "Ir" (i), "m" (v->counter)
+		: "memory");
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	ll	%1, %2	# atomic_sub_return		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	sub	%0, %1, %3				\n"
+#else
+		"	subu	%0, %1, %3				\n"
+#endif
+		"	sc	%0, %2					\n"
+		"	bnez	%0, 4f					\n"
+		"	b	1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	subu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+		"	lw	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	sub	%0, %2					\n"
+#else
+		"	subu	%0, %2					\n"
+#endif
+		"	sw	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Note: Dest reg is not modified on overflow */
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#endif
+		: "=&r" (result), "+m" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+
+	smp_llsc_mb();
+
+	return result;
+}
+static __inline__ int atomic_sub_return_unchecked(int i, atomic_unchecked_t *v)
 {
 	int result;
 
@@ -238,7 +562,7 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v)
  * Atomically test @v and subtract @i if @v is greater or equal than @i.
  * The function returns the old value of @v minus @i.
  */
-static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
+static __inline__ int atomic_sub_if_positive(int i, atomic_t *v)
 {
 	int result;
 
@@ -295,8 +619,26 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
 	return result;
 }
 
-#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
-#define atomic_xchg(v, new) (xchg(&((v)->counter), (new)))
+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
+
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old,
+					   int new)
+{
+	return cmpxchg(&(v->counter), old, new);
+}
+
+static inline int atomic_xchg(atomic_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
+
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&(v->counter), new);
+}
 
 /**
  * __atomic_add_unless - add unless the number is a given value
@@ -324,6 +666,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
 
 #define atomic_dec_return(v) atomic_sub_return(1, (v))
 #define atomic_inc_return(v) atomic_add_return(1, (v))
+static __inline__ int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v);
+}
 
 /*
  * atomic_sub_and_test - subtract value from variable and test result
@@ -345,6 +691,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
  * other cases.
  */
 #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
+static __inline__ int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v) == 0;
+}
 
 /*
  * atomic_dec_and_test - decrement by 1 and test
@@ -369,6 +719,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
  * Atomically increments @v by 1.
  */
 #define atomic_inc(v) atomic_add(1, (v))
+static __inline__ void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	atomic_add_unchecked(1, v);
+}
 
 /*
  * atomic_dec - decrement and test
@@ -377,6 +731,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
  * Atomically decrements @v by 1.
  */
 #define atomic_dec(v) atomic_sub(1, (v))
+static __inline__ void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	atomic_sub_unchecked(1, v);
+}
 
 /*
  * atomic_add_negative - add and test if negative
@@ -398,14 +756,30 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
  * @v: pointer of type atomic64_t
  *
  */
-#define atomic64_read(v)	(*(volatile long *)&(v)->counter)
+static inline long atomic64_read(const atomic64_t *v)
+{
+	return (*(volatile const long *) &v->counter);
+}
+
+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	return (*(volatile const long *) &v->counter);
+}
 
 /*
  * atomic64_set - set atomic variable
  * @v: pointer of type atomic64_t
  * @i: required value
  */
-#define atomic64_set(v, i)	((v)->counter = (i))
+static inline void atomic64_set(atomic64_t *v, long i)
+{
+	v->counter = i;
+}
+
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
+{
+	v->counter = i;
+}
 
 /*
  * atomic64_add - add integer to atomic variable
@@ -414,7 +788,66 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
  *
  * Atomically adds @i to @v.
  */
-static __inline__ void atomic64_add(long i, atomic64_t * v)
+static __inline__ void atomic64_add(long i, atomic64_t *v)
+{
+	long temp;
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%0, %1		# atomic64_add		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"2:	dadd	%0, %2					\n"
+#else
+		"	daddu	%0, %2					\n"
+#endif
+		"	scd	%0, %1					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%0, %1		# atomic64_add		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"2:	dadd	%0, %2					\n"
+#else
+		"	daddu	%0, %2					\n"
+#endif
+		"	scd	%0, %1					\n"
+		"	beqz	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	dadd	%0, %1					\n"
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#else
+		"	daddu	%0, %1					\n"
+#endif
+		: "+r" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+}
+static __inline__ void atomic64_add_unchecked(long i, atomic64_unchecked_t *v)
 {
 	if (kernel_uses_llsc && R10000_LLSC_WAR) {
 		long temp;
@@ -457,7 +890,67 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
  *
  * Atomically subtracts @i from @v.
  */
-static __inline__ void atomic64_sub(long i, atomic64_t * v)
+static __inline__ void atomic64_sub(long i, atomic64_t *v)
+{
+	long temp;
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%0, %1		# atomic64_sub		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Exception on overflow. */
+		"2:	dsub	%0, %2					\n"
+#else
+		"	dsubu	%0, %2					\n"
+#endif
+		"	scd	%0, %1					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%0, %1		# atomic64_sub		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Exception on overflow. */
+		"2:	dsub	%0, %2					\n"
+#else
+		"	dsubu	%0, %2					\n"
+#endif
+		"	scd	%0, %1					\n"
+		"	beqz	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"3:							\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	dsub	%0, %1					\n"
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#else
+		"	dsubu	%0, %1					\n"
+#endif
+		: "+r" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+}
+
+static __inline__ void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v)
 {
 	if (kernel_uses_llsc && R10000_LLSC_WAR) {
 		long temp;
@@ -496,7 +989,93 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
 /*
  * Same as above, but return the result value
  */
-static __inline__ long atomic64_add_return(long i, atomic64_t * v)
+static __inline__ long atomic64_add_return(long i, atomic64_t *v)
+{
+	long result;
+	long temp;
+
+	smp_mb__before_llsc();
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%1, %2		# atomic64_add_return	\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	dadd	%0, %1, %3				\n"
+#else
+		"	daddu	%0, %1, %3				\n"
+#endif
+		"	scd	%0, %2					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	b	4f					\n"
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	daddu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "+m" (v->counter)
+		: "Ir" (i));
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%1, %2	# atomic64_add_return		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	dadd	%0, %1, %3				\n"
+#else
+		"	daddu	%0, %1, %3				\n"
+#endif
+		"	scd	%0, %2					\n"
+		"	bnez	%0, 4f					\n"
+		"	b	1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	daddu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "=m" (v->counter)
+		: "Ir" (i), "m" (v->counter)
+		: "memory");
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+		"	ld	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	dadd	%0, %2					\n"
+#else
+		"	daddu	%0, %2					\n"
+#endif
+		"	sd	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Note: Dest reg is not modified on overflow */
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#endif
+		: "=&r" (result), "+m" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+
+	smp_llsc_mb();
+
+	return result;
+}
+static __inline__ long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
 {
 	long result;
 
@@ -546,7 +1125,97 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
 	return result;
 }
 
-static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
+static __inline__ long atomic64_sub_return(long i, atomic64_t *v)
+{
+	long result;
+	long temp;
+
+	smp_mb__before_llsc();
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		long temp;
+
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%1, %2		# atomic64_sub_return	\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	dsub	%0, %1, %3				\n"
+#else
+		"	dsubu	%0, %1, %3				\n"
+#endif
+		"	scd	%0, %2					\n"
+		"	beqzl	%0, 1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	b	4f					\n"
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	dsubu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "=m" (v->counter)
+		: "Ir" (i), "m" (v->counter)
+		: "memory");
+	} else if (kernel_uses_llsc) {
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:	lld	%1, %2	# atomic64_sub_return		\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"2:	dsub	%0, %1, %3				\n"
+#else
+		"	dsubu	%0, %1, %3				\n"
+#endif
+		"	scd	%0, %2					\n"
+		"	bnez	%0, 4f					\n"
+		"	b	1b					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"	.set	noreorder				\n"
+		"3:	b	5f					\n"
+		"	move	%0, %1					\n"
+		"	.set	reorder					\n"
+		_ASM_EXTABLE(2b, 3b)
+#endif
+		"4:	dsubu	%0, %1, %3				\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		"5:							\n"
+#endif
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "=m" (v->counter)
+		: "Ir" (i), "m" (v->counter)
+		: "memory");
+	} else {
+		unsigned long flags;
+
+		raw_local_irq_save(flags);
+		__asm__ __volatile__(
+		"	ld	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+			/* Exception on overflow. */
+		"1:	dsub	%0, %2					\n"
+#else
+		"	dsubu	%0, %2					\n"
+#endif
+		"	sd	%0, %1					\n"
+#ifdef CONFIG_PAX_REFCOUNT
+		/* Note: Dest reg is not modified on overflow */
+		"2:							\n"
+		_ASM_EXTABLE(1b, 2b)
+#endif
+		: "=&r" (result), "+m" (v->counter) : "Ir" (i));
+		raw_local_irq_restore(flags);
+	}
+
+	smp_llsc_mb();
+
+	return result;
+}
+
+static __inline__ long atomic64_sub_return_unchecked(long i, atomic64_unchecked_t *v)
 {
 	long result;
 
@@ -605,7 +1274,7 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
  * Atomically test @v and subtract @i if @v is greater or equal than @i.
  * The function returns the old value of @v minus @i.
  */
-static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
+static __inline__ long atomic64_sub_if_positive(long i, atomic64_t *v)
 {
 	long result;
 
@@ -662,9 +1331,26 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
 	return result;
 }
 
-#define atomic64_cmpxchg(v, o, n) \
-	((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
-#define atomic64_xchg(v, new) (xchg(&((v)->counter), (new)))
+static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
+
+static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old,
+					      long new)
+{
+	return cmpxchg(&(v->counter), old, new);
+}
+
+static inline long atomic64_xchg(atomic64_t *v, long new)
+{
+	return xchg(&v->counter, new);
+}
+
+static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new)
+{
+	return xchg(&(v->counter), new);
+}
 
 /**
  * atomic64_add_unless - add unless the number is a given value
@@ -694,6 +1380,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 
 #define atomic64_dec_return(v) atomic64_sub_return(1, (v))
 #define atomic64_inc_return(v) atomic64_add_return(1, (v))
+#define atomic64_inc_return_unchecked(v) atomic64_add_return_unchecked(1, (v))
 
 /*
  * atomic64_sub_and_test - subtract value from variable and test result
@@ -715,6 +1402,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
  * other cases.
  */
 #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
+#define atomic64_inc_and_test_unchecked(v) atomic64_add_return_unchecked(1, (v)) == 0)
 
 /*
  * atomic64_dec_and_test - decrement by 1 and test
@@ -739,6 +1427,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
  * Atomically increments @v by 1.
  */
 #define atomic64_inc(v) atomic64_add(1, (v))
+#define atomic64_inc_unchecked(v) atomic64_add_unchecked(1, (v))
 
 /*
  * atomic64_dec - decrement and test
@@ -747,6 +1436,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
  * Atomically decrements @v by 1.
  */
 #define atomic64_dec(v) atomic64_sub(1, (v))
+#define atomic64_dec_unchecked(v) atomic64_sub_unchecked(1, (v))
 
 /*
  * atomic64_add_negative - add and test if negative
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index d0101dd..266982c 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -184,7 +184,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	smp_mb();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/mips/include/asm/cache.h b/arch/mips/include/asm/cache.h
index b4db69f..8f3b093 100644
--- a/arch/mips/include/asm/cache.h
+++ b/arch/mips/include/asm/cache.h
@@ -9,10 +9,11 @@
 #ifndef _ASM_CACHE_H
 #define _ASM_CACHE_H
 
+#include <linux/const.h>
 #include <kmalloc.h>
 
 #define L1_CACHE_SHIFT		CONFIG_MIPS_L1_CACHE_SHIFT
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define SMP_CACHE_SHIFT		L1_CACHE_SHIFT
 #define SMP_CACHE_BYTES		L1_CACHE_BYTES
diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h
index d414405..6bb4ba2 100644
--- a/arch/mips/include/asm/elf.h
+++ b/arch/mips/include/asm/elf.h
@@ -398,13 +398,16 @@ extern const char *__elf_platform;
 #define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
 #endif
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
+
+#define PAX_DELTA_MMAP_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#define PAX_DELTA_STACK_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#endif
+
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 struct linux_binprm;
 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 				       int uses_interp);
 
-struct mm_struct;
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 #endif /* _ASM_ELF_H */
diff --git a/arch/mips/include/asm/exec.h b/arch/mips/include/asm/exec.h
index c1f6afa..38cc6e9 100644
--- a/arch/mips/include/asm/exec.h
+++ b/arch/mips/include/asm/exec.h
@@ -12,6 +12,6 @@
 #ifndef _ASM_EXEC_H
 #define _ASM_EXEC_H
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 
 #endif /* _ASM_EXEC_H */
diff --git a/arch/mips/include/asm/hw_irq.h b/arch/mips/include/asm/hw_irq.h
index 9e8ef59..1139d6b 100644
--- a/arch/mips/include/asm/hw_irq.h
+++ b/arch/mips/include/asm/hw_irq.h
@@ -10,7 +10,7 @@
 
 #include <linux/atomic.h>
 
-extern atomic_t irq_err_count;
+extern atomic_unchecked_t irq_err_count;
 
 /*
  * interrupt-retrigger: NOP for now. This may not be appropriate for all
diff --git a/arch/mips/include/asm/local.h b/arch/mips/include/asm/local.h
index 46dfc3c..a16b13a 100644
--- a/arch/mips/include/asm/local.h
+++ b/arch/mips/include/asm/local.h
@@ -12,15 +12,25 @@ typedef struct
 	atomic_long_t a;
 } local_t;
 
+typedef struct {
+	atomic_long_unchecked_t a;
+} local_unchecked_t;
+
 #define LOCAL_INIT(i)	{ ATOMIC_LONG_INIT(i) }
 
 #define local_read(l)	atomic_long_read(&(l)->a)
+#define local_read_unchecked(l)	atomic_long_read_unchecked(&(l)->a)
 #define local_set(l, i) atomic_long_set(&(l)->a, (i))
+#define local_set_unchecked(l, i)	atomic_long_set_unchecked(&(l)->a, (i))
 
 #define local_add(i, l) atomic_long_add((i), (&(l)->a))
+#define local_add_unchecked(i, l) atomic_long_add_unchecked((i), (&(l)->a))
 #define local_sub(i, l) atomic_long_sub((i), (&(l)->a))
+#define local_sub_unchecked(i, l) atomic_long_sub_unchecked((i), (&(l)->a))
 #define local_inc(l)	atomic_long_inc(&(l)->a)
+#define local_inc_unchecked(l)	atomic_long_inc_unchecked(&(l)->a)
 #define local_dec(l)	atomic_long_dec(&(l)->a)
+#define local_dec_unchecked(l)	atomic_long_dec_unchecked(&(l)->a)
 
 /*
  * Same as above, but return the result value
@@ -70,6 +80,51 @@ static __inline__ long local_add_return(long i, local_t * l)
 	return result;
 }
 
+static __inline__ long local_add_return_unchecked(long i, local_unchecked_t * l)
+{
+	unsigned long result;
+
+	if (kernel_uses_llsc && R10000_LLSC_WAR) {
+		unsigned long temp;
+
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:"	__LL	"%1, %2		# local_add_return	\n"
+		"	addu	%0, %1, %3				\n"
+			__SC	"%0, %2					\n"
+		"	beqzl	%0, 1b					\n"
+		"	addu	%0, %1, %3				\n"
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "=m" (l->a.counter)
+		: "Ir" (i), "m" (l->a.counter)
+		: "memory");
+	} else if (kernel_uses_llsc) {
+		unsigned long temp;
+
+		__asm__ __volatile__(
+		"	.set	mips3					\n"
+		"1:"	__LL	"%1, %2		# local_add_return	\n"
+		"	addu	%0, %1, %3				\n"
+			__SC	"%0, %2					\n"
+		"	beqz	%0, 1b					\n"
+		"	addu	%0, %1, %3				\n"
+		"	.set	mips0					\n"
+		: "=&r" (result), "=&r" (temp), "=m" (l->a.counter)
+		: "Ir" (i), "m" (l->a.counter)
+		: "memory");
+	} else {
+		unsigned long flags;
+
+		local_irq_save(flags);
+		result = l->a.counter;
+		result += i;
+		l->a.counter = result;
+		local_irq_restore(flags);
+	}
+
+	return result;
+}
+
 static __inline__ long local_sub_return(long i, local_t * l)
 {
 	unsigned long result;
@@ -117,6 +172,8 @@ static __inline__ long local_sub_return(long i, local_t * l)
 
 #define local_cmpxchg(l, o, n) \
 	((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
+#define local_cmpxchg_unchecked(l, o, n) \
+	((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
 #define local_xchg(l, n) (atomic_long_xchg((&(l)->a), (n)))
 
 /**
diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
index 5699ec3..95def83 100644
--- a/arch/mips/include/asm/page.h
+++ b/arch/mips/include/asm/page.h
@@ -120,7 +120,7 @@ extern void copy_user_highpage(struct page *to, struct page *from,
   #ifdef CONFIG_CPU_MIPS32
     typedef struct { unsigned long pte_low, pte_high; } pte_t;
     #define pte_val(x)	  ((x).pte_low | ((unsigned long long)(x).pte_high << 32))
-    #define __pte(x)	  ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; })
+    #define __pte(x)	  ({ pte_t __pte = {(x), (x) >> 32}; __pte; })
   #else
      typedef struct { unsigned long long pte; } pte_t;
      #define pte_val(x) ((x).pte)
diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
index b336037..5b874cc 100644
--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -37,6 +37,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 {
 	set_pud(pud, __pud((unsigned long)pmd));
 }
+
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	pud_populate(mm, pud, pmd);
+}
 #endif
 
 /*
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
index 539ddd1..8783f9a 100644
--- a/arch/mips/include/asm/pgtable.h
+++ b/arch/mips/include/asm/pgtable.h
@@ -20,6 +20,9 @@
 #include <asm/io.h>
 #include <asm/pgtable-bits.h>
 
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+
 struct mm_struct;
 struct vm_area_struct;
 
diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
index 7de8658..c109224 100644
--- a/arch/mips/include/asm/thread_info.h
+++ b/arch/mips/include/asm/thread_info.h
@@ -105,6 +105,9 @@ static inline struct thread_info *current_thread_info(void)
 #define TIF_SECCOMP		4	/* secure computing */
 #define TIF_NOTIFY_RESUME	5	/* callback before returning to user */
 #define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
+/* li takes a 32bit immediate */
+#define TIF_GRSEC_SETXID	10	/* update credentials on syscall entry/exit */
+
 #define TIF_USEDFPU		16	/* FPU was used by this task this quantum (SMP) */
 #define TIF_MEMDIE		18	/* is terminating due to OOM killer */
 #define TIF_NOHZ		19	/* in adaptive nohz mode */
@@ -138,14 +141,16 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_USEDMSA		(1<<TIF_USEDMSA)
 #define _TIF_MSA_CTX_LIVE	(1<<TIF_MSA_CTX_LIVE)
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
+#define _TIF_GRSEC_SETXID	(1<<TIF_GRSEC_SETXID)
 
 #define _TIF_WORK_SYSCALL_ENTRY	(_TIF_NOHZ | _TIF_SYSCALL_TRACE |	\
 				 _TIF_SYSCALL_AUDIT | \
-				 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
+				 _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
+				 _TIF_GRSEC_SETXID)
 
 /* work to do in syscall_trace_leave() */
 #define _TIF_WORK_SYSCALL_EXIT	(_TIF_NOHZ | _TIF_SYSCALL_TRACE |	\
-				 _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT)
+				 _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK		\
@@ -153,7 +158,7 @@ static inline struct thread_info *current_thread_info(void)
 /* work to do on any return to u-space */
 #define _TIF_ALLWORK_MASK	(_TIF_NOHZ | _TIF_WORK_MASK |		\
 				 _TIF_WORK_SYSCALL_EXIT |		\
-				 _TIF_SYSCALL_TRACEPOINT)
+				 _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
 
 /*
  * We stash processor id into a COP0 register to retrieve it fast
diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
index a109510..94ee3f6 100644
--- a/arch/mips/include/asm/uaccess.h
+++ b/arch/mips/include/asm/uaccess.h
@@ -130,6 +130,7 @@ extern u64 __ua_limit;
 	__ok == 0;							\
 })
 
+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
 #define access_ok(type, addr, size)					\
 	likely(__access_ok((addr), (size), __access_mask))
 
diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c
index 1188e00..41cf144 100644
--- a/arch/mips/kernel/binfmt_elfn32.c
+++ b/arch/mips/kernel/binfmt_elfn32.c
@@ -50,6 +50,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 #undef ELF_ET_DYN_BASE
 #define ELF_ET_DYN_BASE		(TASK32_SIZE / 3 * 2)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
+
+#define PAX_DELTA_MMAP_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#define PAX_DELTA_STACK_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#endif
+
 #include <asm/processor.h>
 #include <linux/module.h>
 #include <linux/elfcore.h>
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c
index 71df942..199dd19 100644
--- a/arch/mips/kernel/binfmt_elfo32.c
+++ b/arch/mips/kernel/binfmt_elfo32.c
@@ -70,6 +70,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
 #undef ELF_ET_DYN_BASE
 #define ELF_ET_DYN_BASE		(TASK32_SIZE / 3 * 2)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
+
+#define PAX_DELTA_MMAP_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#define PAX_DELTA_STACK_LEN	(TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
+#endif
+
 #include <asm/processor.h>
 
 /* These MUST be defined before elf.h gets included */
diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
index 50b3648..c2f3cec 100644
--- a/arch/mips/kernel/i8259.c
+++ b/arch/mips/kernel/i8259.c
@@ -201,7 +201,7 @@ spurious_8259A_irq:
 			printk(KERN_DEBUG "spurious 8259A interrupt: IRQ%d.\n", irq);
 			spurious_irq_mask |= irqmask;
 		}
-		atomic_inc(&irq_err_count);
+		atomic_inc_unchecked(&irq_err_count);
 		/*
 		 * Theoretically we do not have to handle this IRQ,
 		 * but in Linux this does not cause problems and is
diff --git a/arch/mips/kernel/irq-gt641xx.c b/arch/mips/kernel/irq-gt641xx.c
index 44a1f79..2bd6aa3 100644
--- a/arch/mips/kernel/irq-gt641xx.c
+++ b/arch/mips/kernel/irq-gt641xx.c
@@ -110,7 +110,7 @@ void gt641xx_irq_dispatch(void)
 		}
 	}
 
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 }
 
 void __init gt641xx_irq_init(void)
diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
index d2bfbc2..a8eacd2 100644
--- a/arch/mips/kernel/irq.c
+++ b/arch/mips/kernel/irq.c
@@ -76,17 +76,17 @@ void ack_bad_irq(unsigned int irq)
 	printk("unexpected IRQ # %d\n", irq);
 }
 
-atomic_t irq_err_count;
+atomic_unchecked_t irq_err_count;
 
 int arch_show_interrupts(struct seq_file *p, int prec)
 {
-	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
+	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count));
 	return 0;
 }
 
 asmlinkage void spurious_interrupt(void)
 {
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 }
 
 void __init init_IRQ(void)
@@ -109,7 +109,10 @@ void __init init_IRQ(void)
 #endif
 }
 
+
 #ifdef DEBUG_STACKOVERFLOW
+extern void gr_handle_kernel_exploit(void);
+
 static inline void check_stack_overflow(void)
 {
 	unsigned long sp;
@@ -125,6 +128,7 @@ static inline void check_stack_overflow(void)
 		printk("do_IRQ: stack overflow: %ld\n",
 		       sp - sizeof(struct thread_info));
 		dump_stack();
+		gr_handle_kernel_exploit();
 	}
 }
 #else
diff --git a/arch/mips/kernel/pm-cps.c b/arch/mips/kernel/pm-cps.c
index c4c2069..bde8051 100644
--- a/arch/mips/kernel/pm-cps.c
+++ b/arch/mips/kernel/pm-cps.c
@@ -168,7 +168,7 @@ int cps_pm_enter_state(enum cps_pm_state state)
 	nc_core_ready_count = nc_addr;
 
 	/* Ensure ready_count is zero-initialised before the assembly runs */
-	ACCESS_ONCE(*nc_core_ready_count) = 0;
+	ACCESS_ONCE_RW(*nc_core_ready_count) = 0;
 	coupled_barrier(&per_cpu(pm_barrier, core), online);
 
 	/* Run the generated entry code */
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index 0a1ec0f..d9e93b6 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -572,15 +572,3 @@ unsigned long get_wchan(struct task_struct *task)
 out:
 	return pc;
 }
-
-/*
- * Don't forget that the stack pointer must be aligned on a 8 bytes
- * boundary for 32-bits ABI and 16 bytes for 64-bits ABI.
- */
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
-
-	return sp & ALMASK;
-}
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index aae7119..8b16434 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -762,6 +762,10 @@ long arch_ptrace(struct task_struct *child, long request,
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 /*
  * Notification of system call entry/exit
  * - triggered by current->work.syscall_trace
@@ -778,6 +782,11 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall)
 	    tracehook_report_syscall_entry(regs))
 		ret = -1;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
 		trace_sys_enter(regs, regs->regs[2]);
 
diff --git a/arch/mips/kernel/reset.c b/arch/mips/kernel/reset.c
index 07fc524..b9d7f28 100644
--- a/arch/mips/kernel/reset.c
+++ b/arch/mips/kernel/reset.c
@@ -13,6 +13,7 @@
 #include <linux/reboot.h>
 
 #include <asm/reboot.h>
+#include <asm/bug.h>
 
 /*
  * Urgs ...  Too many MIPS machines to handle this in a generic way.
@@ -29,16 +30,19 @@ void machine_restart(char *command)
 {
 	if (_machine_restart)
 		_machine_restart(command);
+	BUG();
 }
 
 void machine_halt(void)
 {
 	if (_machine_halt)
 		_machine_halt();
+	BUG();
 }
 
 void machine_power_off(void)
 {
 	if (pm_power_off)
 		pm_power_off();
+	BUG();
 }
diff --git a/arch/mips/kernel/sync-r4k.c b/arch/mips/kernel/sync-r4k.c
index 2242bdd..b284048 100644
--- a/arch/mips/kernel/sync-r4k.c
+++ b/arch/mips/kernel/sync-r4k.c
@@ -18,8 +18,8 @@
 #include <asm/mipsregs.h>
 
 static atomic_t count_start_flag = ATOMIC_INIT(0);
-static atomic_t count_count_start = ATOMIC_INIT(0);
-static atomic_t count_count_stop = ATOMIC_INIT(0);
+static atomic_unchecked_t count_count_start = ATOMIC_INIT(0);
+static atomic_unchecked_t count_count_stop = ATOMIC_INIT(0);
 static atomic_t count_reference = ATOMIC_INIT(0);
 
 #define COUNTON 100
@@ -58,13 +58,13 @@ void synchronise_count_master(int cpu)
 
 	for (i = 0; i < NR_LOOPS; i++) {
 		/* slaves loop on '!= 2' */
-		while (atomic_read(&count_count_start) != 1)
+		while (atomic_read_unchecked(&count_count_start) != 1)
 			mb();
-		atomic_set(&count_count_stop, 0);
+		atomic_set_unchecked(&count_count_stop, 0);
 		smp_wmb();
 
 		/* this lets the slaves write their count register */
-		atomic_inc(&count_count_start);
+		atomic_inc_unchecked(&count_count_start);
 
 		/*
 		 * Everyone initialises count in the last loop:
@@ -75,11 +75,11 @@ void synchronise_count_master(int cpu)
 		/*
 		 * Wait for all slaves to leave the synchronization point:
 		 */
-		while (atomic_read(&count_count_stop) != 1)
+		while (atomic_read_unchecked(&count_count_stop) != 1)
 			mb();
-		atomic_set(&count_count_start, 0);
+		atomic_set_unchecked(&count_count_start, 0);
 		smp_wmb();
-		atomic_inc(&count_count_stop);
+		atomic_inc_unchecked(&count_count_stop);
 	}
 	/* Arrange for an interrupt in a short while */
 	write_c0_compare(read_c0_count() + COUNTON);
@@ -112,8 +112,8 @@ void synchronise_count_slave(int cpu)
 	initcount = atomic_read(&count_reference);
 
 	for (i = 0; i < NR_LOOPS; i++) {
-		atomic_inc(&count_count_start);
-		while (atomic_read(&count_count_start) != 2)
+		atomic_inc_unchecked(&count_count_start);
+		while (atomic_read_unchecked(&count_count_start) != 2)
 			mb();
 
 		/*
@@ -122,8 +122,8 @@ void synchronise_count_slave(int cpu)
 		if (i == NR_LOOPS-1)
 			write_c0_count(initcount);
 
-		atomic_inc(&count_count_stop);
-		while (atomic_read(&count_count_stop) != 2)
+		atomic_inc_unchecked(&count_count_stop);
+		while (atomic_read_unchecked(&count_count_stop) != 2)
 			mb();
 	}
 	/* Arrange for an interrupt in a short while */
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 51706d6..ec1178c 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -687,7 +687,18 @@ asmlinkage void do_ov(struct pt_regs *regs)
 	siginfo_t info;
 
 	prev_state = exception_enter();
-	die_if_kernel("Integer overflow", regs);
+	if (unlikely(!user_mode(regs))) {
+
+#ifdef CONFIG_PAX_REFCOUNT
+		if (fixup_exception(regs)) {
+			pax_report_refcount_overflow(regs);
+			exception_exit(prev_state);
+			return;
+		}
+#endif
+
+		die("Integer overflow", regs);
+	}
 
 	info.si_code = FPE_INTOVF;
 	info.si_signo = SIGFPE;
diff --git a/arch/mips/kvm/kvm_mips.c b/arch/mips/kvm/kvm_mips.c
index f3c56a1..6a2f01c 100644
--- a/arch/mips/kvm/kvm_mips.c
+++ b/arch/mips/kvm/kvm_mips.c
@@ -841,7 +841,7 @@ long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg)
 	return r;
 }
 
-int kvm_arch_init(void *opaque)
+int kvm_arch_init(const void *opaque)
 {
 	int ret;
 
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index becc42b..9e43d4b 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -28,6 +28,23 @@
 #include <asm/highmem.h>		/* For VMALLOC_END */
 #include <linux/kdebug.h>
 
+#ifdef CONFIG_PAX_PAGEEXEC
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * This routine handles page faults.  It determines the address,
  * and the problem, and then passes it off to one of the appropriate
@@ -199,6 +216,14 @@ bad_area:
 bad_area_nosemaphore:
 	/* User mode accesses just cause a SIGSEGV */
 	if (user_mode(regs)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (cpu_has_rixi && (mm->pax_flags & MF_PAX_PAGEEXEC) && !write && address == instruction_pointer(regs)) {
+			pax_report_fault(regs, (void *)address, (void *)user_stack_pointer(regs));
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		tsk->thread.cp0_badvaddr = address;
 		tsk->thread.error_code = write;
 #if 0
diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
index f1baadd..5472dca 100644
--- a/arch/mips/mm/mmap.c
+++ b/arch/mips/mm/mmap.c
@@ -59,6 +59,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
 	struct vm_area_struct *vma;
 	unsigned long addr = addr0;
 	int do_color_align;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	if (unlikely(len > TASK_SIZE))
@@ -84,6 +85,11 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
 		do_color_align = 1;
 
 	/* requesting a specific address */
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(current->mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_color_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
@@ -91,14 +97,14 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
 	info.length = len;
 	info.align_mask = do_color_align ? (PAGE_MASK & shm_align_mask) : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 
 	if (dir == DOWN) {
 		info.flags = VM_UNMAPPED_AREA_TOPDOWN;
@@ -146,6 +152,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 {
 	unsigned long random_factor = 0UL;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (current->flags & PF_RANDOMIZE) {
 		random_factor = get_random_int();
 		random_factor = random_factor << PAGE_SHIFT;
@@ -157,40 +167,25 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 
 	if (mmap_is_legacy()) {
 		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 	} else {
 		mm->mmap_base = mmap_base(random_factor);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 	}
 }
 
-static inline unsigned long brk_rnd(void)
-{
-	unsigned long rnd = get_random_int();
-
-	rnd = rnd << PAGE_SHIFT;
-	/* 8MB for 32bit, 256MB for 64bit */
-	if (TASK_IS_32BIT_ADDR)
-		rnd = rnd & 0x7ffffful;
-	else
-		rnd = rnd & 0xffffffful;
-
-	return rnd;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long base = mm->brk;
-	unsigned long ret;
-
-	ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (ret < mm->brk)
-		return mm->brk;
-
-	return ret;
-}
-
 int __virt_addr_valid(const volatile void *kaddr)
 {
 	return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
diff --git a/arch/mips/pci/pci-octeon.c b/arch/mips/pci/pci-octeon.c
index 59cccd9..f39ac2f 100644
--- a/arch/mips/pci/pci-octeon.c
+++ b/arch/mips/pci/pci-octeon.c
@@ -327,8 +327,8 @@ static int octeon_write_config(struct pci_bus *bus, unsigned int devfn,
 
 
 static struct pci_ops octeon_pci_ops = {
-	octeon_read_config,
-	octeon_write_config,
+	.read = octeon_read_config,
+	.write = octeon_write_config,
 };
 
 static struct resource octeon_pci_mem_resource = {
diff --git a/arch/mips/pci/pcie-octeon.c b/arch/mips/pci/pcie-octeon.c
index 5e36c33..eb4a17b 100644
--- a/arch/mips/pci/pcie-octeon.c
+++ b/arch/mips/pci/pcie-octeon.c
@@ -1792,8 +1792,8 @@ static int octeon_dummy_write_config(struct pci_bus *bus, unsigned int devfn,
 }
 
 static struct pci_ops octeon_pcie0_ops = {
-	octeon_pcie0_read_config,
-	octeon_pcie0_write_config,
+	.read = octeon_pcie0_read_config,
+	.write = octeon_pcie0_write_config,
 };
 
 static struct resource octeon_pcie0_mem_resource = {
@@ -1813,8 +1813,8 @@ static struct pci_controller octeon_pcie0_controller = {
 };
 
 static struct pci_ops octeon_pcie1_ops = {
-	octeon_pcie1_read_config,
-	octeon_pcie1_write_config,
+	.read = octeon_pcie1_read_config,
+	.write = octeon_pcie1_write_config,
 };
 
 static struct resource octeon_pcie1_mem_resource = {
@@ -1834,8 +1834,8 @@ static struct pci_controller octeon_pcie1_controller = {
 };
 
 static struct pci_ops octeon_dummy_ops = {
-	octeon_dummy_read_config,
-	octeon_dummy_write_config,
+	.read = octeon_dummy_read_config,
+	.write = octeon_dummy_write_config,
 };
 
 static struct resource octeon_dummy_mem_resource = {
diff --git a/arch/mips/sgi-ip27/ip27-nmi.c b/arch/mips/sgi-ip27/ip27-nmi.c
index a2358b4..7cead4f 100644
--- a/arch/mips/sgi-ip27/ip27-nmi.c
+++ b/arch/mips/sgi-ip27/ip27-nmi.c
@@ -187,9 +187,9 @@ void
 cont_nmi_dump(void)
 {
 #ifndef REAL_NMI_SIGNAL
-	static atomic_t nmied_cpus = ATOMIC_INIT(0);
+	static atomic_unchecked_t nmied_cpus = ATOMIC_INIT(0);
 
-	atomic_inc(&nmied_cpus);
+	atomic_inc_unchecked(&nmied_cpus);
 #endif
 	/*
 	 * Only allow 1 cpu to proceed
@@ -233,7 +233,7 @@ cont_nmi_dump(void)
 		udelay(10000);
 	}
 #else
-	while (atomic_read(&nmied_cpus) != num_online_cpus());
+	while (atomic_read_unchecked(&nmied_cpus) != num_online_cpus());
 #endif
 
 	/*
diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c
index a046b30..6799527 100644
--- a/arch/mips/sni/rm200.c
+++ b/arch/mips/sni/rm200.c
@@ -270,7 +270,7 @@ spurious_8259A_irq:
 			       "spurious RM200 8259A interrupt: IRQ%d.\n", irq);
 			spurious_irq_mask |= irqmask;
 		}
-		atomic_inc(&irq_err_count);
+		atomic_inc_unchecked(&irq_err_count);
 		/*
 		 * Theoretically we do not have to handle this IRQ,
 		 * but in Linux this does not cause problems and is
diff --git a/arch/mips/vr41xx/common/icu.c b/arch/mips/vr41xx/common/icu.c
index 41e873b..34d33a7 100644
--- a/arch/mips/vr41xx/common/icu.c
+++ b/arch/mips/vr41xx/common/icu.c
@@ -653,7 +653,7 @@ static int icu_get_irq(unsigned int irq)
 
 	printk(KERN_ERR "spurious ICU interrupt: %04x,%04x\n", pend1, pend2);
 
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 
 	return -1;
 }
diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
index ae0e4ee..e8f0692 100644
--- a/arch/mips/vr41xx/common/irq.c
+++ b/arch/mips/vr41xx/common/irq.c
@@ -64,7 +64,7 @@ static void irq_dispatch(unsigned int irq)
 	irq_cascade_t *cascade;
 
 	if (irq >= NR_IRQS) {
-		atomic_inc(&irq_err_count);
+		atomic_inc_unchecked(&irq_err_count);
 		return;
 	}
 
@@ -84,7 +84,7 @@ static void irq_dispatch(unsigned int irq)
 		ret = cascade->get_irq(irq);
 		irq = ret;
 		if (ret < 0)
-			atomic_inc(&irq_err_count);
+			atomic_inc_unchecked(&irq_err_count);
 		else
 			irq_dispatch(irq);
 		if (!irqd_irq_disabled(idata) && chip->irq_unmask)
diff --git a/arch/mn10300/proc-mn103e010/include/proc/cache.h b/arch/mn10300/proc-mn103e010/include/proc/cache.h
index 967d144..db12197 100644
--- a/arch/mn10300/proc-mn103e010/include/proc/cache.h
+++ b/arch/mn10300/proc-mn103e010/include/proc/cache.h
@@ -11,12 +11,14 @@
 #ifndef _ASM_PROC_CACHE_H
 #define _ASM_PROC_CACHE_H
 
+#include <linux/const.h>
+
 /* L1 cache */
 
 #define L1_CACHE_NWAYS		4	/* number of ways in caches */
 #define L1_CACHE_NENTRIES	256	/* number of entries in each way */
-#define L1_CACHE_BYTES		16	/* bytes per entry */
 #define L1_CACHE_SHIFT		4	/* shift for bytes per entry */
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)	/* bytes per entry */
 #define L1_CACHE_WAYDISP	0x1000	/* displacement of one way from the next */
 
 #define L1_CACHE_TAG_VALID	0x00000001	/* cache tag valid bit */
diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
index bcb5df2..84fabd2 100644
--- a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
+++ b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
@@ -16,13 +16,15 @@
 #ifndef _ASM_PROC_CACHE_H
 #define _ASM_PROC_CACHE_H
 
+#include <linux/const.h>
+
 /*
  * L1 cache
  */
 #define L1_CACHE_NWAYS		4		/* number of ways in caches */
 #define L1_CACHE_NENTRIES	128		/* number of entries in each way */
-#define L1_CACHE_BYTES		32		/* bytes per entry */
 #define L1_CACHE_SHIFT		5		/* shift for bytes per entry */
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)	/* bytes per entry */
 #define L1_CACHE_WAYDISP	0x1000		/* distance from one way to the next */
 
 #define L1_CACHE_TAG_VALID	0x00000001	/* cache tag valid bit */
diff --git a/arch/openrisc/include/asm/cache.h b/arch/openrisc/include/asm/cache.h
index 4ce7a01..449202a 100644
--- a/arch/openrisc/include/asm/cache.h
+++ b/arch/openrisc/include/asm/cache.h
@@ -19,11 +19,13 @@
 #ifndef __ASM_OPENRISC_CACHE_H
 #define __ASM_OPENRISC_CACHE_H
 
+#include <linux/const.h>
+
 /* FIXME: How can we replace these with values from the CPU...
  * they shouldn't be hard-coded!
  */
 
-#define L1_CACHE_BYTES 16
 #define L1_CACHE_SHIFT 4
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif /* __ASM_OPENRISC_CACHE_H */
diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
index 0be2db2..1b0f26d 100644
--- a/arch/parisc/include/asm/atomic.h
+++ b/arch/parisc/include/asm/atomic.h
@@ -248,6 +248,16 @@ static inline long atomic64_dec_if_positive(atomic64_t *v)
 	return dec;
 }
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* !CONFIG_64BIT */
 
 
diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h
index 47f11c7..3420df2 100644
--- a/arch/parisc/include/asm/cache.h
+++ b/arch/parisc/include/asm/cache.h
@@ -5,6 +5,7 @@
 #ifndef __ARCH_PARISC_CACHE_H
 #define __ARCH_PARISC_CACHE_H
 
+#include <linux/const.h>
 
 /*
  * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have
@@ -15,13 +16,13 @@
  * just ruin performance.
  */
 #ifdef CONFIG_PA20
-#define L1_CACHE_BYTES 64
 #define L1_CACHE_SHIFT 6
 #else
-#define L1_CACHE_BYTES 32
 #define L1_CACHE_SHIFT 5
 #endif
 
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
+
 #ifndef __ASSEMBLY__
 
 #define SMP_CACHE_BYTES L1_CACHE_BYTES
diff --git a/arch/parisc/include/asm/elf.h b/arch/parisc/include/asm/elf.h
index 3391d06..c23a2cc 100644
--- a/arch/parisc/include/asm/elf.h
+++ b/arch/parisc/include/asm/elf.h
@@ -342,6 +342,13 @@ struct pt_regs;	/* forward declaration... */
 
 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE + 0x01000000)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x10000UL
+
+#define PAX_DELTA_MMAP_LEN	16
+#define PAX_DELTA_STACK_LEN	16
+#endif
+
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports.  This could be done in user space,
    but it's not easy, and we've already done it here.  */
diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h
index f213f5b..0af3e8e 100644
--- a/arch/parisc/include/asm/pgalloc.h
+++ b/arch/parisc/include/asm/pgalloc.h
@@ -61,6 +61,11 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
 		        (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT));
 }
 
+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
+{
+	pgd_populate(mm, pgd, pmd);
+}
+
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 {
 	pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT,
@@ -93,6 +98,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
 #define pmd_alloc_one(mm, addr)		({ BUG(); ((pmd_t *)2); })
 #define pmd_free(mm, x)			do { } while (0)
 #define pgd_populate(mm, pmd, pte)	BUG()
+#define pgd_populate_kernel(mm, pmd, pte)	BUG()
 
 #endif
 
diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
index 22b89d1..ce34230 100644
--- a/arch/parisc/include/asm/pgtable.h
+++ b/arch/parisc/include/asm/pgtable.h
@@ -223,6 +223,17 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
 #define PAGE_EXECREAD   __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED)
 #define PAGE_COPY       PAGE_EXECREAD
 #define PAGE_RWX        __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+# define PAGE_SHARED_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED)
+# define PAGE_COPY_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
+# define PAGE_READONLY_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
+#else
+# define PAGE_SHARED_NOEXEC	PAGE_SHARED
+# define PAGE_COPY_NOEXEC	PAGE_COPY
+# define PAGE_READONLY_NOEXEC	PAGE_READONLY
+#endif
+
 #define PAGE_KERNEL	__pgprot(_PAGE_KERNEL)
 #define PAGE_KERNEL_EXEC	__pgprot(_PAGE_KERNEL_EXEC)
 #define PAGE_KERNEL_RWX	__pgprot(_PAGE_KERNEL_RWX)
diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
index 4006964..fcb3cc2 100644
--- a/arch/parisc/include/asm/uaccess.h
+++ b/arch/parisc/include/asm/uaccess.h
@@ -246,10 +246,10 @@ static inline unsigned long __must_check copy_from_user(void *to,
                                           const void __user *from,
                                           unsigned long n)
 {
-        int sz = __compiletime_object_size(to);
+        size_t sz = __compiletime_object_size(to);
         int ret = -EFAULT;
 
-        if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
+        if (likely(sz == (size_t)-1 || !__builtin_constant_p(n) || sz >= n))
                 ret = __copy_from_user(to, from, n);
         else
                 copy_from_user_overflow();
diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
index 50dfafc..b9fc230 100644
--- a/arch/parisc/kernel/module.c
+++ b/arch/parisc/kernel/module.c
@@ -98,16 +98,38 @@
 
 /* three functions to determine where in the module core
  * or init pieces the location is */
+static inline int in_init_rx(struct module *me, void *loc)
+{
+	return (loc >= me->module_init_rx &&
+		loc < (me->module_init_rx + me->init_size_rx));
+}
+
+static inline int in_init_rw(struct module *me, void *loc)
+{
+	return (loc >= me->module_init_rw &&
+		loc < (me->module_init_rw + me->init_size_rw));
+}
+
 static inline int in_init(struct module *me, void *loc)
 {
-	return (loc >= me->module_init &&
-		loc <= (me->module_init + me->init_size));
+	return in_init_rx(me, loc) || in_init_rw(me, loc);
+}
+
+static inline int in_core_rx(struct module *me, void *loc)
+{
+	return (loc >= me->module_core_rx &&
+		loc < (me->module_core_rx + me->core_size_rx));
+}
+
+static inline int in_core_rw(struct module *me, void *loc)
+{
+	return (loc >= me->module_core_rw &&
+		loc < (me->module_core_rw + me->core_size_rw));
 }
 
 static inline int in_core(struct module *me, void *loc)
 {
-	return (loc >= me->module_core &&
-		loc <= (me->module_core + me->core_size));
+	return in_core_rx(me, loc) || in_core_rw(me, loc);
 }
 
 static inline int in_local(struct module *me, void *loc)
@@ -371,13 +393,13 @@ int module_frob_arch_sections(CONST Elf_Ehdr *hdr,
 	}
 
 	/* align things a bit */
-	me->core_size = ALIGN(me->core_size, 16);
-	me->arch.got_offset = me->core_size;
-	me->core_size += gots * sizeof(struct got_entry);
+	me->core_size_rw = ALIGN(me->core_size_rw, 16);
+	me->arch.got_offset = me->core_size_rw;
+	me->core_size_rw += gots * sizeof(struct got_entry);
 
-	me->core_size = ALIGN(me->core_size, 16);
-	me->arch.fdesc_offset = me->core_size;
-	me->core_size += fdescs * sizeof(Elf_Fdesc);
+	me->core_size_rw = ALIGN(me->core_size_rw, 16);
+	me->arch.fdesc_offset = me->core_size_rw;
+	me->core_size_rw += fdescs * sizeof(Elf_Fdesc);
 
 	me->arch.got_max = gots;
 	me->arch.fdesc_max = fdescs;
@@ -395,7 +417,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
 
 	BUG_ON(value == 0);
 
-	got = me->module_core + me->arch.got_offset;
+	got = me->module_core_rw + me->arch.got_offset;
 	for (i = 0; got[i].addr; i++)
 		if (got[i].addr == value)
 			goto out;
@@ -413,7 +435,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
 #ifdef CONFIG_64BIT
 static Elf_Addr get_fdesc(struct module *me, unsigned long value)
 {
-	Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset;
+	Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset;
 
 	if (!value) {
 		printk(KERN_ERR "%s: zero OPD requested!\n", me->name);
@@ -431,7 +453,7 @@ static Elf_Addr get_fdesc(struct module *me, unsigned long value)
 
 	/* Create new one */
 	fdesc->addr = value;
-	fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset;
+	fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset;
 	return (Elf_Addr)fdesc;
 }
 #endif /* CONFIG_64BIT */
@@ -843,7 +865,7 @@ register_unwind_table(struct module *me,
 
 	table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr;
 	end = table + sechdrs[me->arch.unwind_section].sh_size;
-	gp = (Elf_Addr)me->module_core + me->arch.got_offset;
+	gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset;
 
 	DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n",
 	       me->arch.unwind_section, table, end, gp);
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index e1ffea2..46ed66e 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -89,6 +89,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	unsigned long task_size = TASK_SIZE;
 	int do_color_align, last_mmap;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
 
 	if (len > task_size)
 		return -ENOMEM;
@@ -106,6 +107,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 		goto found_addr;
 	}
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_color_align && last_mmap)
 			addr = COLOR_ALIGN(addr, last_mmap, pgoff);
@@ -124,6 +129,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	info.high_limit = mmap_upper_limit();
 	info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
 	info.align_offset = shared_align_offset(last_mmap, pgoff);
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 found_addr:
@@ -143,6 +149,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	unsigned long addr = addr0;
 	int do_color_align, last_mmap;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
 
 #ifdef CONFIG_64BIT
 	/* This should only ever run for 32-bit processes.  */
@@ -167,6 +174,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	}
 
 	/* requesting a specific address */
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_color_align && last_mmap)
 			addr = COLOR_ALIGN(addr, last_mmap, pgoff);
@@ -184,6 +195,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	info.high_limit = mm->mmap_base;
 	info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
 	info.align_offset = shared_align_offset(last_mmap, pgoff);
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 	if (!(addr & ~PAGE_MASK))
 		goto found_addr;
@@ -249,6 +261,13 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 	mm->mmap_legacy_base = mmap_legacy_base();
 	mm->mmap_base = mmap_upper_limit();
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP) {
+		mm->mmap_legacy_base += mm->delta_mmap;
+		mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+	}
+#endif
+
 	if (mmap_is_legacy()) {
 		mm->mmap_base = mm->mmap_legacy_base;
 		mm->get_unmapped_area = arch_get_unmapped_area;
diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
index 47ee620..1107387 100644
--- a/arch/parisc/kernel/traps.c
+++ b/arch/parisc/kernel/traps.c
@@ -726,9 +726,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
 
 			down_read(&current->mm->mmap_sem);
 			vma = find_vma(current->mm,regs->iaoq[0]);
-			if (vma && (regs->iaoq[0] >= vma->vm_start)
-				&& (vma->vm_flags & VM_EXEC)) {
-
+			if (vma && (regs->iaoq[0] >= vma->vm_start)) {
 				fault_address = regs->iaoq[0];
 				fault_space = regs->iasq[0];
 
diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 3ca9c11..d163ef7 100644
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -15,6 +15,7 @@
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/unistd.h>
 
 #include <asm/uaccess.h>
 #include <asm/traps.h>
@@ -50,7 +51,7 @@ int show_unhandled_signals = 1;
 static unsigned long
 parisc_acctyp(unsigned long code, unsigned int inst)
 {
-	if (code == 6 || code == 16)
+	if (code == 6 || code == 7 || code == 16)
 	    return VM_EXEC;
 
 	switch (inst & 0xf0000000) {
@@ -136,6 +137,116 @@ parisc_acctyp(unsigned long code, unsigned int inst)
 			}
 #endif
 
+#ifdef CONFIG_PAX_PAGEEXEC
+/*
+ * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when rt_sigreturn trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: unpatched PLT emulation */
+		unsigned int bl, depwi;
+
+		err = get_user(bl, (unsigned int *)instruction_pointer(regs));
+		err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4));
+
+		if (err)
+			break;
+
+		if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) {
+			unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12;
+
+			err = get_user(ldw, (unsigned int *)addr);
+			err |= get_user(bv, (unsigned int *)(addr+4));
+			err |= get_user(ldw2, (unsigned int *)(addr+8));
+
+			if (err)
+				break;
+
+			if (ldw == 0x0E801096U &&
+			    bv == 0xEAC0C000U &&
+			    ldw2 == 0x0E881095U)
+			{
+				unsigned int resolver, map;
+
+				err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8));
+				err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12));
+				if (err)
+					break;
+
+				regs->gr[20] = instruction_pointer(regs)+8;
+				regs->gr[21] = map;
+				regs->gr[22] = resolver;
+				regs->iaoq[0] = resolver | 3UL;
+				regs->iaoq[1] = regs->iaoq[0] + 4;
+				return 3;
+			}
+		}
+	} while (0);
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+
+#ifndef CONFIG_PAX_EMUSIGRT
+	if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP))
+		return 1;
+#endif
+
+	do { /* PaX: rt_sigreturn emulation */
+		unsigned int ldi1, ldi2, bel, nop;
+
+		err = get_user(ldi1, (unsigned int *)instruction_pointer(regs));
+		err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4));
+		err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8));
+		err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12));
+
+		if (err)
+			break;
+
+		if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) &&
+		    ldi2 == 0x3414015AU &&
+		    bel == 0xE4008200U &&
+		    nop == 0x08000240U)
+		{
+			regs->gr[25] = (ldi1 & 2) >> 1;
+			regs->gr[20] = __NR_rt_sigreturn;
+			regs->gr[31] = regs->iaoq[1] + 16;
+			regs->sr[0] = regs->iasq[1];
+			regs->iaoq[0] = 0x100UL;
+			regs->iaoq[1] = regs->iaoq[0] + 4;
+			regs->iasq[0] = regs->sr[2];
+			regs->iasq[1] = regs->sr[2];
+			return 2;
+		}
+	} while (0);
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 int fixup_exception(struct pt_regs *regs)
 {
 	const struct exception_table_entry *fix;
@@ -234,8 +345,33 @@ retry:
 
 good_area:
 
-	if ((vma->vm_flags & acc_type) != acc_type)
+	if ((vma->vm_flags & acc_type) != acc_type) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) &&
+		    (address & ~3UL) == instruction_pointer(regs))
+		{
+			up_read(&mm->mmap_sem);
+			switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+			case 3:
+				return;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+			case 2:
+				return;
+#endif
+
+			}
+			pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		goto bad_area;
+	}
 
 	/*
 	 * If for any reason at all we couldn't handle the fault, make
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 80b94b0..a3274fb 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -398,6 +398,7 @@ config PPC64_SUPPORTS_MEMORY_FAILURE
 config KEXEC
 	bool "kexec system call"
 	depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
+	depends on !GRKERNSEC_KMEM
 	help
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
index 28992d0..c797b20 100644
--- a/arch/powerpc/include/asm/atomic.h
+++ b/arch/powerpc/include/asm/atomic.h
@@ -519,6 +519,16 @@ static __inline__ long atomic64_inc_not_zero(atomic64_t *v)
 	return t1;
 }
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* __powerpc64__ */
 
 #endif /* __KERNEL__ */
diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
index bab79a1..4a3eabc 100644
--- a/arch/powerpc/include/asm/barrier.h
+++ b/arch/powerpc/include/asm/barrier.h
@@ -73,7 +73,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	__lwsync();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
index ed0afc1..0332825 100644
--- a/arch/powerpc/include/asm/cache.h
+++ b/arch/powerpc/include/asm/cache.h
@@ -3,6 +3,7 @@
 
 #ifdef __KERNEL__
 
+#include <linux/const.h>
 
 /* bytes per L1 cache line */
 #if defined(CONFIG_8xx) || defined(CONFIG_403GCX)
@@ -22,7 +23,7 @@
 #define L1_CACHE_SHIFT		7
 #endif
 
-#define	L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define	L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define	SMP_CACHE_BYTES		L1_CACHE_BYTES
 
diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index 888d8f3..66f581c 100644
--- a/arch/powerpc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
@@ -28,8 +28,19 @@
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-extern unsigned long randomize_et_dyn(unsigned long base);
-#define ELF_ET_DYN_BASE		(randomize_et_dyn(0x20000000))
+#define ELF_ET_DYN_BASE		(0x20000000)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(0x10000000UL)
+
+#ifdef __powerpc64__
+#define PAX_DELTA_MMAP_LEN	(is_32bit_task() ? 16 : 28)
+#define PAX_DELTA_STACK_LEN	(is_32bit_task() ? 16 : 28)
+#else
+#define PAX_DELTA_MMAP_LEN	15
+#define PAX_DELTA_STACK_LEN	15
+#endif
+#endif
 
 #define ELF_CORE_EFLAGS (is_elf2_task() ? 2 : 0)
 
@@ -129,10 +140,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
 	(0x7ff >> (PAGE_SHIFT - 12)) : \
 	(0x3ffff >> (PAGE_SHIFT - 12)))
 
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
-
 #ifdef CONFIG_SPU_BASE
 /* Notes used in ET_CORE. Note name is "SPU/<fd>/<filename>". */
 #define NT_SPU		1
diff --git a/arch/powerpc/include/asm/exec.h b/arch/powerpc/include/asm/exec.h
index 8196e9c..d83a9f3 100644
--- a/arch/powerpc/include/asm/exec.h
+++ b/arch/powerpc/include/asm/exec.h
@@ -4,6 +4,6 @@
 #ifndef _ASM_POWERPC_EXEC_H
 #define _ASM_POWERPC_EXEC_H
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 
 #endif /* _ASM_POWERPC_EXEC_H */
diff --git a/arch/powerpc/include/asm/kmap_types.h b/arch/powerpc/include/asm/kmap_types.h
index 5acabbd..7ea14fa 100644
--- a/arch/powerpc/include/asm/kmap_types.h
+++ b/arch/powerpc/include/asm/kmap_types.h
@@ -10,7 +10,7 @@
  * 2 of the License, or (at your option) any later version.
  */
 
-#define KM_TYPE_NR 16
+#define KM_TYPE_NR 17
 
 #endif	/* __KERNEL__ */
 #endif	/* _ASM_POWERPC_KMAP_TYPES_H */
diff --git a/arch/powerpc/include/asm/local.h b/arch/powerpc/include/asm/local.h
index b8da913..60b608a 100644
--- a/arch/powerpc/include/asm/local.h
+++ b/arch/powerpc/include/asm/local.h
@@ -9,15 +9,26 @@ typedef struct
 	atomic_long_t a;
 } local_t;
 
+typedef struct
+{
+	atomic_long_unchecked_t a;
+} local_unchecked_t;
+
 #define LOCAL_INIT(i)	{ ATOMIC_LONG_INIT(i) }
 
 #define local_read(l)	atomic_long_read(&(l)->a)
+#define local_read_unchecked(l)	atomic_long_read_unchecked(&(l)->a)
 #define local_set(l,i)	atomic_long_set(&(l)->a, (i))
+#define local_set_unchecked(l,i)	atomic_long_set_unchecked(&(l)->a, (i))
 
 #define local_add(i,l)	atomic_long_add((i),(&(l)->a))
+#define local_add_unchecked(i,l)	atomic_long_add_unchecked((i),(&(l)->a))
 #define local_sub(i,l)	atomic_long_sub((i),(&(l)->a))
+#define local_sub_unchecked(i,l)	atomic_long_sub_unchecked((i),(&(l)->a))
 #define local_inc(l)	atomic_long_inc(&(l)->a)
+#define local_inc_unchecked(l)	atomic_long_inc_unchecked(&(l)->a)
 #define local_dec(l)	atomic_long_dec(&(l)->a)
+#define local_dec_unchecked(l)	atomic_long_dec_unchecked(&(l)->a)
 
 static __inline__ long local_add_return(long a, local_t *l)
 {
@@ -35,6 +46,7 @@ static __inline__ long local_add_return(long a, local_t *l)
 
 	return t;
 }
+#define local_add_return_unchecked(i, l) atomic_long_add_return_unchecked((i), (&(l)->a))
 
 #define local_add_negative(a, l)	(local_add_return((a), (l)) < 0)
 
@@ -54,6 +66,7 @@ static __inline__ long local_sub_return(long a, local_t *l)
 
 	return t;
 }
+#define local_sub_return_unchecked(i, l) atomic_long_sub_return_unchecked((i), (&(l)->a))
 
 static __inline__ long local_inc_return(local_t *l)
 {
@@ -101,6 +114,8 @@ static __inline__ long local_dec_return(local_t *l)
 
 #define local_cmpxchg(l, o, n) \
 	(cmpxchg_local(&((l)->a.counter), (o), (n)))
+#define local_cmpxchg_unchecked(l, o, n) \
+	(cmpxchg_local(&((l)->a.counter), (o), (n)))
 #define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n)))
 
 /**
diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h
index 8565c25..2865190 100644
--- a/arch/powerpc/include/asm/mman.h
+++ b/arch/powerpc/include/asm/mman.h
@@ -24,7 +24,7 @@ static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot)
 }
 #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)
 
-static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
+static inline pgprot_t arch_vm_get_page_prot(vm_flags_t vm_flags)
 {
 	return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
 }
diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
index 32e4e21..62afb12 100644
--- a/arch/powerpc/include/asm/page.h
+++ b/arch/powerpc/include/asm/page.h
@@ -230,8 +230,9 @@ extern long long virt_phys_offset;
  * and needs to be executable.  This means the whole heap ends
  * up being executable.
  */
-#define VM_DATA_DEFAULT_FLAGS32	(VM_READ | VM_WRITE | VM_EXEC | \
-				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS32 \
+	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
+	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #define VM_DATA_DEFAULT_FLAGS64	(VM_READ | VM_WRITE | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
@@ -259,6 +260,9 @@ extern long long virt_phys_offset;
 #define is_kernel_addr(x)	((x) >= PAGE_OFFSET)
 #endif
 
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+
 #ifndef CONFIG_PPC_BOOK3S_64
 /*
  * Use the top bit of the higher-level page table entries to indicate whether
diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h
index 88693ce..ac6f9ab 100644
--- a/arch/powerpc/include/asm/page_64.h
+++ b/arch/powerpc/include/asm/page_64.h
@@ -153,15 +153,18 @@ do {						\
  * stack by default, so in the absence of a PT_GNU_STACK program header
  * we turn execute permission off.
  */
-#define VM_STACK_DEFAULT_FLAGS32	(VM_READ | VM_WRITE | VM_EXEC | \
-					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_STACK_DEFAULT_FLAGS32 \
+	(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
+	 VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
 #define VM_STACK_DEFAULT_FLAGS64	(VM_READ | VM_WRITE | \
 					 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
+#ifndef CONFIG_PAX_PAGEEXEC
 #define VM_STACK_DEFAULT_FLAGS \
 	(is_32bit_task() ? \
 	 VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
+#endif
 
 #include <asm-generic/getorder.h>
 
diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h
index 4b0be20..c15a27d 100644
--- a/arch/powerpc/include/asm/pgalloc-64.h
+++ b/arch/powerpc/include/asm/pgalloc-64.h
@@ -54,6 +54,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 #ifndef CONFIG_PPC_64K_PAGES
 
 #define pgd_populate(MM, PGD, PUD)	pgd_set(PGD, PUD)
+#define pgd_populate_kernel(MM, PGD, PUD)	pgd_populate((MM), (PGD), (PUD))
 
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
@@ -71,6 +72,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 	pud_set(pud, (unsigned long)pmd);
 }
 
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	pud_populate(mm, pud, pmd);
+}
+
 #define pmd_populate(mm, pmd, pte_page) \
 	pmd_populate_kernel(mm, pmd, page_address(pte_page))
 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte))
@@ -173,6 +179,7 @@ extern void __tlb_remove_table(void *_table);
 #endif
 
 #define pud_populate(mm, pud, pmd)	pud_set(pud, (unsigned long)pmd)
+#define pud_populate_kernel(mm, pud, pmd)	pud_populate((mm), (pud), (pmd))
 
 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
 				       pte_t *pte)
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index d98c1ec..9f61569 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -2,6 +2,7 @@
 #define _ASM_POWERPC_PGTABLE_H
 #ifdef __KERNEL__
 
+#include <linux/const.h>
 #ifndef __ASSEMBLY__
 #include <linux/mmdebug.h>
 #include <asm/processor.h>		/* For TASK_SIZE */
diff --git a/arch/powerpc/include/asm/pte-hash32.h b/arch/powerpc/include/asm/pte-hash32.h
index 4aad413..85d86bf 100644
--- a/arch/powerpc/include/asm/pte-hash32.h
+++ b/arch/powerpc/include/asm/pte-hash32.h
@@ -21,6 +21,7 @@
 #define _PAGE_FILE	0x004	/* when !present: nonlinear file mapping */
 #define _PAGE_USER	0x004	/* usermode access allowed */
 #define _PAGE_GUARDED	0x008	/* G: prohibit speculative access */
+#define _PAGE_EXEC	_PAGE_GUARDED
 #define _PAGE_COHERENT	0x010	/* M: enforce memory coherence (SMP systems) */
 #define _PAGE_NO_CACHE	0x020	/* I: cache inhibit */
 #define _PAGE_WRITETHRU	0x040	/* W: cache write-through */
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index bffd89d..a6641ed 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -251,6 +251,7 @@
 #define SPRN_DBCR	0x136	/* e300 Data Breakpoint Control Reg */
 #define SPRN_DSISR	0x012	/* Data Storage Interrupt Status Register */
 #define   DSISR_NOHPTE		0x40000000	/* no translation found */
+#define   DSISR_GUARDED		0x10000000	/* fetch from guarded storage */
 #define   DSISR_PROTFAULT	0x08000000	/* protection fault */
 #define   DSISR_ISSTORE		0x02000000	/* access was a store */
 #define   DSISR_DABRMATCH	0x00400000	/* hit data breakpoint */
diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
index 5a6614a..d89995d1 100644
--- a/arch/powerpc/include/asm/smp.h
+++ b/arch/powerpc/include/asm/smp.h
@@ -51,7 +51,7 @@ struct smp_ops_t {
 	int   (*cpu_disable)(void);
 	void  (*cpu_die)(unsigned int nr);
 	int   (*cpu_bootable)(unsigned int nr);
-};
+} __no_const;
 
 extern void smp_send_debugger_break(void);
 extern void start_secondary_resume(void);
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index b034ecd..af7e31f 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -107,6 +107,8 @@ static inline struct thread_info *current_thread_info(void)
 #if defined(CONFIG_PPC64)
 #define TIF_ELF2ABI		18	/* function descriptors must die! */
 #endif
+/* mask must be expressable within 16 bits to satisfy 'andi' instruction reqs */
+#define TIF_GRSEC_SETXID	6	/* update credentials on syscall entry/exit */
 
 /* as above, but as bit values */
 #define _TIF_SYSCALL_TRACE	(1<<TIF_SYSCALL_TRACE)
@@ -125,9 +127,10 @@ static inline struct thread_info *current_thread_info(void)
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
 #define _TIF_EMULATE_STACK_STORE	(1<<TIF_EMULATE_STACK_STORE)
 #define _TIF_NOHZ		(1<<TIF_NOHZ)
+#define _TIF_GRSEC_SETXID	(1<<TIF_GRSEC_SETXID)
 #define _TIF_SYSCALL_T_OR_A	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
 				 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT | \
-				 _TIF_NOHZ)
+				 _TIF_NOHZ | _TIF_GRSEC_SETXID)
 
 #define _TIF_USER_WORK_MASK	(_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
 				 _TIF_NOTIFY_RESUME | _TIF_UPROBE | \
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index 9485b43..3bd3c16 100644
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -58,6 +58,7 @@
 
 #endif
 
+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
 #define access_ok(type, addr, size)		\
 	(__chk_user_ptr(addr),			\
 	 __access_ok((__force unsigned long)(addr), (size), get_fs()))
@@ -318,52 +319,6 @@ do {								\
 extern unsigned long __copy_tofrom_user(void __user *to,
 		const void __user *from, unsigned long size);
 
-#ifndef __powerpc64__
-
-static inline unsigned long copy_from_user(void *to,
-		const void __user *from, unsigned long n)
-{
-	unsigned long over;
-
-	if (access_ok(VERIFY_READ, from, n))
-		return __copy_tofrom_user((__force void __user *)to, from, n);
-	if ((unsigned long)from < TASK_SIZE) {
-		over = (unsigned long)from + n - TASK_SIZE;
-		return __copy_tofrom_user((__force void __user *)to, from,
-				n - over) + over;
-	}
-	return n;
-}
-
-static inline unsigned long copy_to_user(void __user *to,
-		const void *from, unsigned long n)
-{
-	unsigned long over;
-
-	if (access_ok(VERIFY_WRITE, to, n))
-		return __copy_tofrom_user(to, (__force void __user *)from, n);
-	if ((unsigned long)to < TASK_SIZE) {
-		over = (unsigned long)to + n - TASK_SIZE;
-		return __copy_tofrom_user(to, (__force void __user *)from,
-				n - over) + over;
-	}
-	return n;
-}
-
-#else /* __powerpc64__ */
-
-#define __copy_in_user(to, from, size) \
-	__copy_tofrom_user((to), (from), (size))
-
-extern unsigned long copy_from_user(void *to, const void __user *from,
-				    unsigned long n);
-extern unsigned long copy_to_user(void __user *to, const void *from,
-				  unsigned long n);
-extern unsigned long copy_in_user(void __user *to, const void __user *from,
-				  unsigned long n);
-
-#endif /* __powerpc64__ */
-
 static inline unsigned long __copy_from_user_inatomic(void *to,
 		const void __user *from, unsigned long n)
 {
@@ -387,6 +342,10 @@ static inline unsigned long __copy_from_user_inatomic(void *to,
 		if (ret == 0)
 			return 0;
 	}
+
+	if (!__builtin_constant_p(n))
+		check_object_size(to, n, false);
+
 	return __copy_tofrom_user((__force void __user *)to, from, n);
 }
 
@@ -413,6 +372,10 @@ static inline unsigned long __copy_to_user_inatomic(void __user *to,
 		if (ret == 0)
 			return 0;
 	}
+
+	if (!__builtin_constant_p(n))
+		check_object_size(from, n, true);
+
 	return __copy_tofrom_user(to, (__force const void __user *)from, n);
 }
 
@@ -430,6 +393,92 @@ static inline unsigned long __copy_to_user(void __user *to,
 	return __copy_to_user_inatomic(to, from, size);
 }
 
+#ifndef __powerpc64__
+
+static inline unsigned long __must_check copy_from_user(void *to,
+		const void __user *from, unsigned long n)
+{
+	unsigned long over;
+
+	if ((long)n < 0)
+		return n;
+
+	if (access_ok(VERIFY_READ, from, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(to, n, false);
+		return __copy_tofrom_user((__force void __user *)to, from, n);
+	}
+	if ((unsigned long)from < TASK_SIZE) {
+		over = (unsigned long)from + n - TASK_SIZE;
+		if (!__builtin_constant_p(n - over))
+			check_object_size(to, n - over, false);
+		return __copy_tofrom_user((__force void __user *)to, from,
+				n - over) + over;
+	}
+	return n;
+}
+
+static inline unsigned long __must_check copy_to_user(void __user *to,
+		const void *from, unsigned long n)
+{
+	unsigned long over;
+
+	if ((long)n < 0)
+		return n;
+
+	if (access_ok(VERIFY_WRITE, to, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n, true);
+		return __copy_tofrom_user(to, (__force void __user *)from, n);
+	}
+	if ((unsigned long)to < TASK_SIZE) {
+		over = (unsigned long)to + n - TASK_SIZE;
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n - over, true);
+		return __copy_tofrom_user(to, (__force void __user *)from,
+				n - over) + over;
+	}
+	return n;
+}
+
+#else /* __powerpc64__ */
+
+#define __copy_in_user(to, from, size) \
+	__copy_tofrom_user((to), (from), (size))
+
+static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	if ((long)n < 0 || n > INT_MAX)
+		return n;
+
+	if (!__builtin_constant_p(n))
+		check_object_size(to, n, false);
+
+	if (likely(access_ok(VERIFY_READ, from, n)))
+		n = __copy_from_user(to, from, n);
+	else
+		memset(to, 0, n);
+	return n;
+}
+
+static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	if ((long)n < 0 || n > INT_MAX)
+		return n;
+
+	if (likely(access_ok(VERIFY_WRITE, to, n))) {
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n, true);
+		n = __copy_to_user(to, from, n);
+	}
+	return n;
+}
+
+extern unsigned long copy_in_user(void __user *to, const void __user *from,
+				  unsigned long n);
+
+#endif /* __powerpc64__ */
+
 extern unsigned long __clear_user(void __user *addr, unsigned long size);
 
 static inline unsigned long clear_user(void __user *addr, unsigned long size)
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 670c312..60c2b52 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -27,6 +27,8 @@ CFLAGS_REMOVE_ftrace.o = -pg -mno-sched-epilog
 CFLAGS_REMOVE_time.o = -pg -mno-sched-epilog
 endif
 
+CFLAGS_REMOVE_prom_init.o += $(LATENT_ENTROPY_PLUGIN_CFLAGS)
+
 obj-y				:= cputable.o ptrace.o syscalls.o \
 				   irq.o align.o signal_32.o pmc.o vdso.o \
 				   process.o systbl.o idle.o \
diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
index bb9cac6..5181202 100644
--- a/arch/powerpc/kernel/exceptions-64e.S
+++ b/arch/powerpc/kernel/exceptions-64e.S
@@ -1010,6 +1010,7 @@ storage_fault_common:
 	std	r14,_DAR(r1)
 	std	r15,_DSISR(r1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	save_nvgprs
 	mr	r4,r14
 	mr	r5,r15
 	ld	r14,PACA_EXGEN+EX_R14(r13)
@@ -1018,8 +1019,7 @@ storage_fault_common:
 	cmpdi	r3,0
 	bne-	1f
 	b	ret_from_except_lite
-1:	bl	save_nvgprs
-	mr	r5,r3
+1:	mr	r5,r3
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	ld	r4,_DAR(r1)
 	bl	bad_page_fault
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index a7d36b1..53af150 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -1637,10 +1637,10 @@ handle_page_fault:
 11:	ld	r4,_DAR(r1)
 	ld	r5,_DSISR(r1)
 	addi	r3,r1,STACK_FRAME_OVERHEAD
+	bl	save_nvgprs
 	bl	do_page_fault
 	cmpdi	r3,0
 	beq+	12f
-	bl	save_nvgprs
 	mr	r5,r3
 	addi	r3,r1,STACK_FRAME_OVERHEAD
 	lwz	r4,_DAR(r1)
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 248ee7e..1eb60dd 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -447,6 +447,8 @@ void migrate_irqs(void)
 }
 #endif
 
+extern void gr_handle_kernel_exploit(void);
+
 static inline void check_stack_overflow(void)
 {
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
@@ -459,6 +461,7 @@ static inline void check_stack_overflow(void)
 		printk("do_IRQ: stack overflow: %ld\n",
 			sp - sizeof(struct thread_info));
 		dump_stack();
+		gr_handle_kernel_exploit();
 	}
 #endif
 }
diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c
index 6cff040..74ac5d1b 100644
--- a/arch/powerpc/kernel/module_32.c
+++ b/arch/powerpc/kernel/module_32.c
@@ -161,7 +161,7 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr,
 			me->arch.core_plt_section = i;
 	}
 	if (!me->arch.core_plt_section || !me->arch.init_plt_section) {
-		printk("Module doesn't contain .plt or .init.plt sections.\n");
+		printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name);
 		return -ENOEXEC;
 	}
 
@@ -191,11 +191,16 @@ static uint32_t do_plt_call(void *location,
 
 	DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location);
 	/* Init, or core PLT? */
-	if (location >= mod->module_core
-	    && location < mod->module_core + mod->core_size)
+	if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) ||
+	    (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw))
 		entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
-	else
+	else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) ||
+		 (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw))
 		entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
+	else {
+		printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name);
+		return ~0UL;
+	}
 
 	/* Find this entry, or if that fails, the next avail. entry */
 	while (entry->jump[0]) {
@@ -299,7 +304,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
 	}
 #ifdef CONFIG_DYNAMIC_FTRACE
 	module->arch.tramp =
-		do_plt_call(module->module_core,
+		do_plt_call(module->module_core_rx,
 			    (unsigned long)ftrace_caller,
 			    sechdrs, module);
 #endif
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index be99774..9879c82 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1039,8 +1039,8 @@ void show_regs(struct pt_regs * regs)
 	 * Lookup NIP late so we have the best change of getting the
 	 * above info out without failing
 	 */
-	printk("NIP ["REG"] %pS\n", regs->nip, (void *)regs->nip);
-	printk("LR ["REG"] %pS\n", regs->link, (void *)regs->link);
+	printk("NIP ["REG"] %pA\n", regs->nip, (void *)regs->nip);
+	printk("LR ["REG"] %pA\n", regs->link, (void *)regs->link);
 #endif
 	show_stack(current, (unsigned long *) regs->gpr[1]);
 	if (!user_mode(regs))
@@ -1554,10 +1554,10 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
 		newsp = stack[0];
 		ip = stack[STACK_FRAME_LR_SAVE];
 		if (!firstframe || ip != lr) {
-			printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip);
+			printk("["REG"] ["REG"] %pA", sp, ip, (void *)ip);
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 			if ((ip == rth || ip == mrth) && curr_frame >= 0) {
-				printk(" (%pS)",
+				printk(" (%pA)",
 				       (void *)current->ret_stack[curr_frame].ret);
 				curr_frame--;
 			}
@@ -1577,7 +1577,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
 			struct pt_regs *regs = (struct pt_regs *)
 				(sp + STACK_FRAME_OVERHEAD);
 			lr = regs->link;
-			printk("--- Exception: %lx at %pS\n    LR = %pS\n",
+			printk("--- Exception: %lx at %pA\n    LR = %pA\n",
 			       regs->trap, (void *)regs->nip, (void *)lr);
 			firstframe = 1;
 		}
@@ -1613,58 +1613,3 @@ void notrace __ppc64_runlatch_off(void)
 	mtspr(SPRN_CTRLT, ctrl);
 }
 #endif /* CONFIG_PPC64 */
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
-	return sp & ~0xf;
-}
-
-static inline unsigned long brk_rnd(void)
-{
-        unsigned long rnd = 0;
-
-	/* 8MB for 32bit, 1GB for 64bit */
-	if (is_32bit_task())
-		rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT)));
-	else
-		rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT)));
-
-	return rnd << PAGE_SHIFT;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long base = mm->brk;
-	unsigned long ret;
-
-#ifdef CONFIG_PPC_STD_MMU_64
-	/*
-	 * If we are using 1TB segments and we are allowed to randomise
-	 * the heap, we can put it above 1TB so it is backed by a 1TB
-	 * segment. Otherwise the heap will be in the bottom 1TB
-	 * which always uses 256MB segments and this may result in a
-	 * performance penalty.
-	 */
-	if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T))
-		base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T);
-#endif
-
-	ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (ret < mm->brk)
-		return mm->brk;
-
-	return ret;
-}
-
-unsigned long randomize_et_dyn(unsigned long base)
-{
-	unsigned long ret = PAGE_ALIGN(base + brk_rnd());
-
-	if (ret < base)
-		return base;
-
-	return ret;
-}
diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 2e3d2bf..35df241 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -1762,6 +1762,10 @@ long arch_ptrace(struct task_struct *child, long request,
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 /*
  * We must return the syscall number to actually look up in the table.
  * This can be -1L to skip running any syscall at all.
@@ -1774,6 +1778,11 @@ long do_syscall_trace_enter(struct pt_regs *regs)
 
 	secure_computing_strict(regs->gpr[0]);
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (test_thread_flag(TIF_SYSCALL_TRACE) &&
 	    tracehook_report_syscall_entry(regs))
 		/*
@@ -1808,6 +1817,11 @@ void do_syscall_trace_leave(struct pt_regs *regs)
 {
 	int step;
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 1bc5a17..910d3f3 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -1012,7 +1012,7 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
 	/* Save user registers on the stack */
 	frame = &rt_sf->uc.uc_mcontext;
 	addr = frame;
-	if (vdso32_rt_sigtramp && current->mm->context.vdso_base) {
+	if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) {
 		sigret = 0;
 		tramp = current->mm->context.vdso_base + vdso32_rt_sigtramp;
 	} else {
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index 97c1e4b..f427f81 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -755,7 +755,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
 	current->thread.fp_state.fpscr = 0;
 
 	/* Set up to return from userspace. */
-	if (vdso64_rt_sigtramp && current->mm->context.vdso_base) {
+	if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) {
 		regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp;
 	} else {
 		err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]);
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 239f1cd..5359f76 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -142,6 +142,8 @@ static unsigned __kprobes long oops_begin(struct pt_regs *regs)
 	return flags;
 }
 
+extern void gr_handle_kernel_exploit(void);
+
 static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,
 			       int signr)
 {
@@ -191,6 +193,9 @@ static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,
 		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception");
+
+	gr_handle_kernel_exploit();
+
 	do_exit(signr);
 }
 
diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
index ce74c33..0803371 100644
--- a/arch/powerpc/kernel/vdso.c
+++ b/arch/powerpc/kernel/vdso.c
@@ -35,6 +35,7 @@
 #include <asm/vdso.h>
 #include <asm/vdso_datapage.h>
 #include <asm/setup.h>
+#include <asm/mman.h>
 
 #undef DEBUG
 
@@ -221,7 +222,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	vdso_base = VDSO32_MBASE;
 #endif
 
-	current->mm->context.vdso_base = 0;
+	current->mm->context.vdso_base = ~0UL;
 
 	/* vDSO has a problem and was disabled, just don't "enable" it for the
 	 * process
@@ -241,7 +242,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	vdso_base = get_unmapped_area(NULL, vdso_base,
 				      (vdso_pages << PAGE_SHIFT) +
 				      ((VDSO_ALIGNMENT - 1) & PAGE_MASK),
-				      0, 0);
+				      0, MAP_PRIVATE | MAP_EXECUTABLE);
 	if (IS_ERR_VALUE(vdso_base)) {
 		rc = vdso_base;
 		goto fail_mmapsem;
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 61c738a..b1092d6 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -1195,7 +1195,7 @@ void kvmppc_init_lpid(unsigned long nr_lpids_param)
 }
 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
 
-int kvm_arch_init(void *opaque)
+int kvm_arch_init(const void *opaque)
 {
 	return 0;
 }
diff --git a/arch/powerpc/lib/usercopy_64.c b/arch/powerpc/lib/usercopy_64.c
index 5eea6f3..5d10396 100644
--- a/arch/powerpc/lib/usercopy_64.c
+++ b/arch/powerpc/lib/usercopy_64.c
@@ -9,22 +9,6 @@
 #include <linux/module.h>
 #include <asm/uaccess.h>
 
-unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
-{
-	if (likely(access_ok(VERIFY_READ, from, n)))
-		n = __copy_from_user(to, from, n);
-	else
-		memset(to, 0, n);
-	return n;
-}
-
-unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
-{
-	if (likely(access_ok(VERIFY_WRITE, to, n)))
-		n = __copy_to_user(to, from, n);
-	return n;
-}
-
 unsigned long copy_in_user(void __user *to, const void __user *from,
 			   unsigned long n)
 {
@@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user *to, const void __user *from,
 	return n;
 }
 
-EXPORT_SYMBOL(copy_from_user);
-EXPORT_SYMBOL(copy_to_user);
 EXPORT_SYMBOL(copy_in_user);
 
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 51ab9e7..7d3c78b 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -33,6 +33,10 @@
 #include <linux/magic.h>
 #include <linux/ratelimit.h>
 #include <linux/context_tracking.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/compiler.h>
+#include <linux/unistd.h>
 
 #include <asm/firmware.h>
 #include <asm/page.h>
@@ -69,6 +73,33 @@ static inline int notify_page_fault(struct pt_regs *regs)
 }
 #endif
 
+#ifdef CONFIG_PAX_PAGEEXEC
+/*
+ * PaX: decide what to do with offenders (regs->nip = fault address)
+ *
+ * returns 1 when task should be killed
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 5; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int __user *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 /*
  * Check whether the instruction at regs->nip is a store using
  * an update addressing form which will update r1.
@@ -216,7 +247,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
 	 * indicate errors in DSISR but can validly be set in SRR1.
 	 */
 	if (trap == 0x400)
-		error_code &= 0x48200000;
+		error_code &= 0x58200000;
 	else
 		is_write = error_code & DSISR_ISSTORE;
 #else
@@ -378,7 +409,7 @@ good_area:
          * "undefined".  Of those that can be set, this is the only
          * one which seems bad.
          */
-	if (error_code & 0x10000000)
+	if (error_code & DSISR_GUARDED)
                 /* Guarded storage error. */
 		goto bad_area;
 #endif /* CONFIG_8xx */
@@ -393,7 +424,7 @@ good_area:
 		 * processors use the same I/D cache coherency mechanism
 		 * as embedded.
 		 */
-		if (error_code & DSISR_PROTFAULT)
+		if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))
 			goto bad_area;
 #endif /* CONFIG_PPC_STD_MMU */
 
@@ -483,6 +514,23 @@ bad_area:
 bad_area_nosemaphore:
 	/* User mode accesses cause a SIGSEGV */
 	if (user_mode(regs)) {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if (mm->pax_flags & MF_PAX_PAGEEXEC) {
+#ifdef CONFIG_PPC_STD_MMU
+			if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) {
+#else
+			if (is_exec && regs->nip == address) {
+#endif
+				switch (pax_handle_fetch_fault(regs)) {
+				}
+
+				pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]);
+				do_group_exit(SIGKILL);
+			}
+		}
+#endif
+
 		_exception(SIGSEGV, regs, code, address);
 		goto bail;
 	}
diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c
index cb8bdbe..cde4bc7 100644
--- a/arch/powerpc/mm/mmap.c
+++ b/arch/powerpc/mm/mmap.c
@@ -53,10 +53,14 @@ static inline int mmap_is_legacy(void)
 	return sysctl_legacy_va_layout;
 }
 
-static unsigned long mmap_rnd(void)
+static unsigned long mmap_rnd(struct mm_struct *mm)
 {
 	unsigned long rnd = 0;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (current->flags & PF_RANDOMIZE) {
 		/* 8MB for 32bit, 1GB for 64bit */
 		if (is_32bit_task())
@@ -67,7 +71,7 @@ static unsigned long mmap_rnd(void)
 	return rnd << PAGE_SHIFT;
 }
 
-static inline unsigned long mmap_base(void)
+static inline unsigned long mmap_base(struct mm_struct *mm)
 {
 	unsigned long gap = rlimit(RLIMIT_STACK);
 
@@ -76,7 +80,7 @@ static inline unsigned long mmap_base(void)
 	else if (gap > MAX_GAP)
 		gap = MAX_GAP;
 
-	return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
+	return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd(mm));
 }
 
 /*
@@ -91,9 +95,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 	 */
 	if (mmap_is_legacy()) {
 		mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 	} else {
-		mm->mmap_base = mmap_base();
+		mm->mmap_base = mmap_base(mm);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 	}
 }
diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
index b0c75cc..ef7fb93 100644
--- a/arch/powerpc/mm/slice.c
+++ b/arch/powerpc/mm/slice.c
@@ -103,7 +103,7 @@ static int slice_area_is_free(struct mm_struct *mm, unsigned long addr,
 	if ((mm->task_size - len) < addr)
 		return 0;
 	vma = find_vma(mm, addr);
-	return (!vma || (addr + len) <= vma->vm_start);
+	return check_heap_stack_gap(vma, addr, len, 0);
 }
 
 static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice)
@@ -277,6 +277,12 @@ static unsigned long slice_find_area_bottomup(struct mm_struct *mm,
 	info.align_offset = 0;
 
 	addr = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		addr += mm->delta_mmap;
+#endif
+
 	while (addr < TASK_SIZE) {
 		info.low_limit = addr;
 		if (!slice_scan_available(addr, available, 1, &addr))
@@ -410,6 +416,11 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len,
 	if (fixed && addr > (mm->task_size - len))
 		return -ENOMEM;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP))
+		addr = 0;
+#endif
+
 	/* If hint, make sure it matches our alignment restrictions */
 	if (!fixed && addr) {
 		addr = _ALIGN_UP(addr, 1ul << pshift);
diff --git a/arch/powerpc/platforms/cell/celleb_scc_pciex.c b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
index 4278acf..67fd0e6 100644
--- a/arch/powerpc/platforms/cell/celleb_scc_pciex.c
+++ b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
@@ -400,8 +400,8 @@ static int scc_pciex_write_config(struct pci_bus *bus, unsigned int devfn,
 }
 
 static struct pci_ops scc_pciex_pci_ops = {
-	scc_pciex_read_config,
-	scc_pciex_write_config,
+	.read = scc_pciex_read_config,
+	.write = scc_pciex_write_config,
 };
 
 static void pciex_clear_intr_all(unsigned int __iomem *base)
diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
index 9098692..3d54cd1 100644
--- a/arch/powerpc/platforms/cell/spufs/file.c
+++ b/arch/powerpc/platforms/cell/spufs/file.c
@@ -280,9 +280,9 @@ spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 	return VM_FAULT_NOPAGE;
 }
 
-static int spufs_mem_mmap_access(struct vm_area_struct *vma,
+static ssize_t spufs_mem_mmap_access(struct vm_area_struct *vma,
 				unsigned long address,
-				void *buf, int len, int write)
+				void *buf, size_t len, int write)
 {
 	struct spu_context *ctx = vma->vm_file->private_data;
 	unsigned long offset = address - vma->vm_start;
diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index fa934fe..c296056 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -412,4 +412,14 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v)
 #define atomic64_dec_and_test(_v)	(atomic64_sub_return(1, _v) == 0)
 #define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 #endif /* __ARCH_S390_ATOMIC__  */
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 19ff956..8d39cb1 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm/barrier.h
@@ -37,7 +37,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	barrier();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h
index 4d7ccac..d03d0ad 100644
--- a/arch/s390/include/asm/cache.h
+++ b/arch/s390/include/asm/cache.h
@@ -9,8 +9,10 @@
 #ifndef __ARCH_S390_CACHE_H
 #define __ARCH_S390_CACHE_H
 
-#define L1_CACHE_BYTES     256
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT     8
+#define L1_CACHE_BYTES     (_AC(1,UL) << L1_CACHE_SHIFT)
 #define NET_SKB_PAD	   32
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 78f4f87..598ce39 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -162,8 +162,14 @@ extern unsigned int vdso_enabled;
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-extern unsigned long randomize_et_dyn(unsigned long base);
-#define ELF_ET_DYN_BASE		(randomize_et_dyn(STACK_TOP / 3 * 2))
+#define ELF_ET_DYN_BASE		(STACK_TOP / 3 * 2)
+
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL)
+
+#define PAX_DELTA_MMAP_LEN	(test_thread_flag(TIF_31BIT) ? 15 : 26)
+#define PAX_DELTA_STACK_LEN	(test_thread_flag(TIF_31BIT) ? 15 : 26)
+#endif
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports. */
@@ -222,9 +228,6 @@ struct linux_binprm;
 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
 int arch_setup_additional_pages(struct linux_binprm *, int);
 
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 void *fill_cpu_elf_notes(void *ptr, struct save_area *sa);
 
 #endif
diff --git a/arch/s390/include/asm/exec.h b/arch/s390/include/asm/exec.h
index c4a93d6..4d2a9b4 100644
--- a/arch/s390/include/asm/exec.h
+++ b/arch/s390/include/asm/exec.h
@@ -7,6 +7,6 @@
 #ifndef __ASM_EXEC_H
 #define __ASM_EXEC_H
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 
 #endif /* __ASM_EXEC_H */
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index cd4c68e..6764641 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -59,6 +59,7 @@ static inline int __range_ok(unsigned long addr, unsigned long size)
 	__range_ok((unsigned long)(addr), (size));	\
 })
 
+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
 #define access_ok(type, addr, size) __access_ok(addr, size)
 
 /*
@@ -275,6 +276,10 @@ static inline unsigned long __must_check
 copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	might_fault();
+
+	if ((long)n < 0)
+		return n;
+
 	return __copy_to_user(to, from, n);
 }
 
@@ -303,10 +308,14 @@ __compiletime_warning("copy_from_user() buffer size is not provably correct")
 static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-	unsigned int sz = __compiletime_object_size(to);
+	size_t sz = __compiletime_object_size(to);
 
 	might_fault();
-	if (unlikely(sz != -1 && sz < n)) {
+
+	if ((long)n < 0)
+		return n;
+
+	if (unlikely(sz != (size_t)-1 && sz < n)) {
 		copy_from_user_overflow();
 		return n;
 	}
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index b89b591..fd9609d 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -169,11 +169,11 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
 
 	/* Increase core size by size of got & plt and set start
 	   offsets for got and plt. */
-	me->core_size = ALIGN(me->core_size, 4);
-	me->arch.got_offset = me->core_size;
-	me->core_size += me->arch.got_size;
-	me->arch.plt_offset = me->core_size;
-	me->core_size += me->arch.plt_size;
+	me->core_size_rw = ALIGN(me->core_size_rw, 4);
+	me->arch.got_offset = me->core_size_rw;
+	me->core_size_rw += me->arch.got_size;
+	me->arch.plt_offset = me->core_size_rx;
+	me->core_size_rx += me->arch.plt_size;
 	return 0;
 }
 
@@ -289,7 +289,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 		if (info->got_initialized == 0) {
 			Elf_Addr *gotent;
 
-			gotent = me->module_core + me->arch.got_offset +
+			gotent = me->module_core_rw + me->arch.got_offset +
 				info->got_offset;
 			*gotent = val;
 			info->got_initialized = 1;
@@ -312,7 +312,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 			rc = apply_rela_bits(loc, val, 0, 64, 0);
 		else if (r_type == R_390_GOTENT ||
 			 r_type == R_390_GOTPLTENT) {
-			val += (Elf_Addr) me->module_core - loc;
+			val += (Elf_Addr) me->module_core_rw - loc;
 			rc = apply_rela_bits(loc, val, 1, 32, 1);
 		}
 		break;
@@ -325,7 +325,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 	case R_390_PLTOFF64:	/* 16 bit offset from GOT to PLT. */
 		if (info->plt_initialized == 0) {
 			unsigned int *ip;
-			ip = me->module_core + me->arch.plt_offset +
+			ip = me->module_core_rx + me->arch.plt_offset +
 				info->plt_offset;
 #ifndef CONFIG_64BIT
 			ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */
@@ -350,7 +350,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 			       val - loc + 0xffffUL < 0x1ffffeUL) ||
 			      (r_type == R_390_PLT32DBL &&
 			       val - loc + 0xffffffffULL < 0x1fffffffeULL)))
-				val = (Elf_Addr) me->module_core +
+				val = (Elf_Addr) me->module_core_rx +
 					me->arch.plt_offset +
 					info->plt_offset;
 			val += rela->r_addend - loc;
@@ -372,7 +372,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 	case R_390_GOTOFF32:	/* 32 bit offset to GOT.  */
 	case R_390_GOTOFF64:	/* 64 bit offset to GOT. */
 		val = val + rela->r_addend -
-			((Elf_Addr) me->module_core + me->arch.got_offset);
+			((Elf_Addr) me->module_core_rw + me->arch.got_offset);
 		if (r_type == R_390_GOTOFF16)
 			rc = apply_rela_bits(loc, val, 0, 16, 0);
 		else if (r_type == R_390_GOTOFF32)
@@ -382,7 +382,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
 		break;
 	case R_390_GOTPC:	/* 32 bit PC relative offset to GOT. */
 	case R_390_GOTPCDBL:	/* 32 bit PC rel. off. to GOT shifted by 1. */
-		val = (Elf_Addr) me->module_core + me->arch.got_offset +
+		val = (Elf_Addr) me->module_core_rw + me->arch.got_offset +
 			rela->r_addend - loc;
 		if (r_type == R_390_GOTPC)
 			rc = apply_rela_bits(loc, val, 1, 32, 0);
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 93b9ca4..4ea1454 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -242,37 +242,3 @@ unsigned long get_wchan(struct task_struct *p)
 	}
 	return 0;
 }
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() & ~PAGE_MASK;
-	return sp & ~0xf;
-}
-
-static inline unsigned long brk_rnd(void)
-{
-	/* 8MB for 32bit, 1GB for 64bit */
-	if (is_32bit_task())
-		return (get_random_int() & 0x7ffUL) << PAGE_SHIFT;
-	else
-		return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT;
-}
-
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long ret;
-
-	ret = PAGE_ALIGN(mm->brk + brk_rnd());
-	return (ret > mm->brk) ? ret : mm->brk;
-}
-
-unsigned long randomize_et_dyn(unsigned long base)
-{
-	unsigned long ret;
-
-	if (!(current->flags & PF_RANDOMIZE))
-		return base;
-	ret = PAGE_ALIGN(base + brk_rnd());
-	return (ret > base) ? ret : base;
-}
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index 9b436c2..54fbf0a 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -95,9 +95,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 	 */
 	if (mmap_is_legacy()) {
 		mm->mmap_base = mmap_base_legacy();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 	} else {
 		mm->mmap_base = mmap_base();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 	}
 }
@@ -170,9 +182,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 	 */
 	if (mmap_is_legacy()) {
 		mm->mmap_base = mmap_base_legacy();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = s390_get_unmapped_area;
 	} else {
 		mm->mmap_base = mmap_base();
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = s390_get_unmapped_area_topdown;
 	}
 }
diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h
index ae3d59f..f65f075 100644
--- a/arch/score/include/asm/cache.h
+++ b/arch/score/include/asm/cache.h
@@ -1,7 +1,9 @@
 #ifndef _ASM_SCORE_CACHE_H
 #define _ASM_SCORE_CACHE_H
 
+#include <linux/const.h>
+
 #define L1_CACHE_SHIFT		4
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif /* _ASM_SCORE_CACHE_H */
diff --git a/arch/score/include/asm/exec.h b/arch/score/include/asm/exec.h
index f9f3cd5..58ff438 100644
--- a/arch/score/include/asm/exec.h
+++ b/arch/score/include/asm/exec.h
@@ -1,6 +1,6 @@
 #ifndef _ASM_SCORE_EXEC_H
 #define _ASM_SCORE_EXEC_H
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) (x)
 
 #endif /* _ASM_SCORE_EXEC_H */
diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c
index a1519ad3..e8ac1ff 100644
--- a/arch/score/kernel/process.c
+++ b/arch/score/kernel/process.c
@@ -116,8 +116,3 @@ unsigned long get_wchan(struct task_struct *task)
 
 	return task_pt_regs(task)->cp0_epc;
 }
-
-unsigned long arch_align_stack(unsigned long sp)
-{
-	return sp;
-}
diff --git a/arch/sh/include/asm/cache.h b/arch/sh/include/asm/cache.h
index ef9e555..331bd29 100644
--- a/arch/sh/include/asm/cache.h
+++ b/arch/sh/include/asm/cache.h
@@ -9,10 +9,11 @@
 #define __ASM_SH_CACHE_H
 #ifdef __KERNEL__
 
+#include <linux/const.h>
 #include <linux/init.h>
 #include <cpu/cache.h>
 
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
 
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
index 6777177..cb5e44f 100644
--- a/arch/sh/mm/mmap.c
+++ b/arch/sh/mm/mmap.c
@@ -36,6 +36,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
 	int do_colour_align;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	if (flags & MAP_FIXED) {
@@ -55,6 +56,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	if (filp || (flags & MAP_SHARED))
 		do_colour_align = 1;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_colour_align)
 			addr = COLOUR_ALIGN(addr, pgoff);
@@ -62,14 +67,13 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
 	info.flags = 0;
 	info.length = len;
-	info.low_limit = TASK_UNMAPPED_BASE;
+	info.low_limit = mm->mmap_base;
 	info.high_limit = TASK_SIZE;
 	info.align_mask = do_colour_align ? (PAGE_MASK & shm_align_mask) : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
@@ -85,6 +89,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	struct mm_struct *mm = current->mm;
 	unsigned long addr = addr0;
 	int do_colour_align;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	if (flags & MAP_FIXED) {
@@ -104,6 +109,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	if (filp || (flags & MAP_SHARED))
 		do_colour_align = 1;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* requesting a specific address */
 	if (addr) {
 		if (do_colour_align)
@@ -112,8 +121,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -135,6 +143,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		VM_BUG_ON(addr != -ENOMEM);
 		info.flags = 0;
 		info.low_limit = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap;
+#endif
+
 		info.high_limit = TASK_SIZE;
 		addr = vm_unmapped_area(&info);
 	}
diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
index bb894c8..8141d5c 100644
--- a/arch/sparc/include/asm/atomic_64.h
+++ b/arch/sparc/include/asm/atomic_64.h
@@ -15,18 +15,40 @@
 #define ATOMIC64_INIT(i)	{ (i) }
 
 #define atomic_read(v)		(*(volatile int *)&(v)->counter)
+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return v->counter;
+}
 #define atomic64_read(v)	(*(volatile long *)&(v)->counter)
+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	return v->counter;
+}
 
 #define atomic_set(v, i)	(((v)->counter) = i)
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
 #define atomic64_set(v, i)	(((v)->counter) = i)
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
+{
+	v->counter = i;
+}
 
 void atomic_add(int, atomic_t *);
+void atomic_add_unchecked(int, atomic_unchecked_t *);
 void atomic64_add(long, atomic64_t *);
+void atomic64_add_unchecked(long, atomic64_unchecked_t *);
 void atomic_sub(int, atomic_t *);
+void atomic_sub_unchecked(int, atomic_unchecked_t *);
 void atomic64_sub(long, atomic64_t *);
+void atomic64_sub_unchecked(long, atomic64_unchecked_t *);
 
 int atomic_add_ret(int, atomic_t *);
+int atomic_add_ret_unchecked(int, atomic_unchecked_t *);
 long atomic64_add_ret(long, atomic64_t *);
+long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *);
 int atomic_sub_ret(int, atomic_t *);
 long atomic64_sub_ret(long, atomic64_t *);
 
@@ -34,13 +56,29 @@ long atomic64_sub_ret(long, atomic64_t *);
 #define atomic64_dec_return(v) atomic64_sub_ret(1, v)
 
 #define atomic_inc_return(v) atomic_add_ret(1, v)
+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_ret_unchecked(1, v);
+}
 #define atomic64_inc_return(v) atomic64_add_ret(1, v)
+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
+{
+	return atomic64_add_ret_unchecked(1, v);
+}
 
 #define atomic_sub_return(i, v) atomic_sub_ret(i, v)
 #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v)
 
 #define atomic_add_return(i, v) atomic_add_ret(i, v)
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
+	return atomic_add_ret_unchecked(i, v);
+}
 #define atomic64_add_return(i, v) atomic64_add_ret(i, v)
+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
+{
+	return atomic64_add_ret_unchecked(i, v);
+}
 
 /*
  * atomic_inc_and_test - increment and test
@@ -51,6 +89,10 @@ long atomic64_sub_ret(long, atomic64_t *);
  * other cases.
  */
 #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_inc_return_unchecked(v) == 0;
+}
 #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
 
 #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0)
@@ -60,25 +102,60 @@ long atomic64_sub_ret(long, atomic64_t *);
 #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0)
 
 #define atomic_inc(v) atomic_add(1, v)
+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	atomic_add_unchecked(1, v);
+}
 #define atomic64_inc(v) atomic64_add(1, v)
+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v)
+{
+	atomic64_add_unchecked(1, v);
+}
 
 #define atomic_dec(v) atomic_sub(1, v)
+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	atomic_sub_unchecked(1, v);
+}
 #define atomic64_dec(v) atomic64_sub(1, v)
+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v)
+{
+	atomic64_sub_unchecked(1, v);
+}
 
 #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
 #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
 
 #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
 
 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 {
-	int c, old;
+	int c, old, new;
 	c = atomic_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic_cmpxchg((v), c, c + (a));
+
+		asm volatile("addcc %2, %0, %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "tvs %%icc, 6\n"
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a)
+			     : "cc");
+
+		old = atomic_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
@@ -89,20 +166,35 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 #define atomic64_cmpxchg(v, o, n) \
 	((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
 #define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
+static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new)
+{
+	return xchg(&v->counter, new);
+}
 
 static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
 {
-	long c, old;
+	long c, old, new;
 	c = atomic64_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic64_cmpxchg((v), c, c + (a));
+
+		asm volatile("addcc %2, %0, %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "tvs %%xcc, 6\n"
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a)
+			     : "cc");
+
+		old = atomic64_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
 	}
-	return c != (u);
+	return c != u;
 }
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h
index 305dcc3..7835030 100644
--- a/arch/sparc/include/asm/barrier_64.h
+++ b/arch/sparc/include/asm/barrier_64.h
@@ -57,7 +57,7 @@ do {	__asm__ __volatile__("ba,pt	%%xcc, 1f\n\t" \
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	barrier();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h
index 5bb6991..5c2132e 100644
--- a/arch/sparc/include/asm/cache.h
+++ b/arch/sparc/include/asm/cache.h
@@ -7,10 +7,12 @@
 #ifndef _SPARC_CACHE_H
 #define _SPARC_CACHE_H
 
+#include <linux/const.h>
+
 #define ARCH_SLAB_MINALIGN	__alignof__(unsigned long long)
 
 #define L1_CACHE_SHIFT 5
-#define L1_CACHE_BYTES 32
+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
 
 #ifdef CONFIG_SPARC32
 #define SMP_CACHE_BYTES_SHIFT 5
diff --git a/arch/sparc/include/asm/elf_32.h b/arch/sparc/include/asm/elf_32.h
index a24e41f..47677ff 100644
--- a/arch/sparc/include/asm/elf_32.h
+++ b/arch/sparc/include/asm/elf_32.h
@@ -114,6 +114,13 @@ typedef struct {
 
 #define ELF_ET_DYN_BASE         (TASK_UNMAPPED_BASE)
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	0x10000UL
+
+#define PAX_DELTA_MMAP_LEN	16
+#define PAX_DELTA_STACK_LEN	16
+#endif
+
 /* This yields a mask that user programs can use to figure out what
    instruction set this cpu supports.  This can NOT be done in userspace
    on Sparc.  */
diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h
index 370ca1e..d4f4a98 100644
--- a/arch/sparc/include/asm/elf_64.h
+++ b/arch/sparc/include/asm/elf_64.h
@@ -189,6 +189,13 @@ typedef struct {
 #define ELF_ET_DYN_BASE		0x0000010000000000UL
 #define COMPAT_ELF_ET_DYN_BASE	0x0000000070000000UL
 
+#ifdef CONFIG_PAX_ASLR
+#define PAX_ELF_ET_DYN_BASE	(test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL)
+
+#define PAX_DELTA_MMAP_LEN	(test_thread_flag(TIF_32BIT) ? 14 : 28)
+#define PAX_DELTA_STACK_LEN	(test_thread_flag(TIF_32BIT) ? 15 : 29)
+#endif
+
 extern unsigned long sparc64_elf_hwcap;
 #define ELF_HWCAP	sparc64_elf_hwcap
 
diff --git a/arch/sparc/include/asm/pgalloc_32.h b/arch/sparc/include/asm/pgalloc_32.h
index a3890da..f6a408e 100644
--- a/arch/sparc/include/asm/pgalloc_32.h
+++ b/arch/sparc/include/asm/pgalloc_32.h
@@ -35,6 +35,7 @@ static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
 }
 
 #define pgd_populate(MM, PGD, PMD)      pgd_set(PGD, PMD)
+#define pgd_populate_kernel(MM, PGD, PMD)      pgd_populate((MM), (PGD), (PMD))
 
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
 				   unsigned long address)
diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h
index 39a7ac4..2c9b586 100644
--- a/arch/sparc/include/asm/pgalloc_64.h
+++ b/arch/sparc/include/asm/pgalloc_64.h
@@ -26,6 +26,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 }
 
 #define pud_populate(MM, PUD, PMD)	pud_set(PUD, PMD)
+#define pud_populate_kernel(MM, PUD, PMD)	pud_populate((MM), (PUD), (PMD))
 
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
diff --git a/arch/sparc/include/asm/pgtable.h b/arch/sparc/include/asm/pgtable.h
index 59ba6f6..4518128 100644
--- a/arch/sparc/include/asm/pgtable.h
+++ b/arch/sparc/include/asm/pgtable.h
@@ -5,4 +5,8 @@
 #else
 #include <asm/pgtable_32.h>
 #endif
+
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+
 #endif
diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
index b9b91ae..950b91e 100644
--- a/arch/sparc/include/asm/pgtable_32.h
+++ b/arch/sparc/include/asm/pgtable_32.h
@@ -51,6 +51,9 @@ unsigned long __init bootmem_init(unsigned long *pages_avail);
 #define PAGE_SHARED	SRMMU_PAGE_SHARED
 #define PAGE_COPY	SRMMU_PAGE_COPY
 #define PAGE_READONLY	SRMMU_PAGE_RDONLY
+#define PAGE_SHARED_NOEXEC	SRMMU_PAGE_SHARED_NOEXEC
+#define PAGE_COPY_NOEXEC	SRMMU_PAGE_COPY_NOEXEC
+#define PAGE_READONLY_NOEXEC	SRMMU_PAGE_RDONLY_NOEXEC
 #define PAGE_KERNEL	SRMMU_PAGE_KERNEL
 
 /* Top-level page directory - dummy used by init-mm.
@@ -63,18 +66,18 @@ extern unsigned long ptr_in_current_pgd;
 
 /*         xwr */
 #define __P000  PAGE_NONE
-#define __P001  PAGE_READONLY
-#define __P010  PAGE_COPY
-#define __P011  PAGE_COPY
+#define __P001  PAGE_READONLY_NOEXEC
+#define __P010  PAGE_COPY_NOEXEC
+#define __P011  PAGE_COPY_NOEXEC
 #define __P100  PAGE_READONLY
 #define __P101  PAGE_READONLY
 #define __P110  PAGE_COPY
 #define __P111  PAGE_COPY
 
 #define __S000	PAGE_NONE
-#define __S001	PAGE_READONLY
-#define __S010	PAGE_SHARED
-#define __S011	PAGE_SHARED
+#define __S001	PAGE_READONLY_NOEXEC
+#define __S010	PAGE_SHARED_NOEXEC
+#define __S011	PAGE_SHARED_NOEXEC
 #define __S100	PAGE_READONLY
 #define __S101	PAGE_READONLY
 #define __S110	PAGE_SHARED
diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
index 79da178..c2eede8 100644
--- a/arch/sparc/include/asm/pgtsrmmu.h
+++ b/arch/sparc/include/asm/pgtsrmmu.h
@@ -115,6 +115,11 @@
 				    SRMMU_EXEC | SRMMU_REF)
 #define SRMMU_PAGE_RDONLY  __pgprot(SRMMU_VALID | SRMMU_CACHE | \
 				    SRMMU_EXEC | SRMMU_REF)
+
+#define SRMMU_PAGE_SHARED_NOEXEC	__pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF)
+#define SRMMU_PAGE_COPY_NOEXEC		__pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF)
+#define SRMMU_PAGE_RDONLY_NOEXEC	__pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF)
+
 #define SRMMU_PAGE_KERNEL  __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \
 				    SRMMU_DIRTY | SRMMU_REF)
 
diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h
index f5fffd8..a0669f0 100644
--- a/arch/sparc/include/asm/setup.h
+++ b/arch/sparc/include/asm/setup.h
@@ -53,8 +53,8 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs);
 void handle_ld_nf(u32 insn, struct pt_regs *regs);
 
 /* init_64.c */
-extern atomic_t dcpage_flushes;
-extern atomic_t dcpage_flushes_xcall;
+extern atomic_unchecked_t dcpage_flushes;
+extern atomic_unchecked_t dcpage_flushes_xcall;
 
 extern int sysctl_tsb_ratio;
 #endif
diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h
index 9689176..63c18ea 100644
--- a/arch/sparc/include/asm/spinlock_64.h
+++ b/arch/sparc/include/asm/spinlock_64.h
@@ -92,14 +92,19 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long fla
 
 /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */
 
-static void inline arch_read_lock(arch_rwlock_t *lock)
+static inline void arch_read_lock(arch_rwlock_t *lock)
 {
 	unsigned long tmp1, tmp2;
 
 	__asm__ __volatile__ (
 "1:	ldsw		[%2], %0\n"
 "	brlz,pn		%0, 2f\n"
-"4:	 add		%0, 1, %1\n"
+"4:	 addcc		%0, 1, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	tvs		%%icc, 6\n"
+#endif
+
 "	cas		[%2], %0, %1\n"
 "	cmp		%0, %1\n"
 "	bne,pn		%%icc, 1b\n"
@@ -112,10 +117,10 @@ static void inline arch_read_lock(arch_rwlock_t *lock)
 "	.previous"
 	: "=&r" (tmp1), "=&r" (tmp2)
 	: "r" (lock)
-	: "memory");
+	: "memory", "cc");
 }
 
-static int inline arch_read_trylock(arch_rwlock_t *lock)
+static inline int arch_read_trylock(arch_rwlock_t *lock)
 {
 	int tmp1, tmp2;
 
@@ -123,7 +128,12 @@ static int inline arch_read_trylock(arch_rwlock_t *lock)
 "1:	ldsw		[%2], %0\n"
 "	brlz,a,pn	%0, 2f\n"
 "	 mov		0, %0\n"
-"	add		%0, 1, %1\n"
+"	addcc		%0, 1, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	tvs		%%icc, 6\n"
+#endif
+
 "	cas		[%2], %0, %1\n"
 "	cmp		%0, %1\n"
 "	bne,pn		%%icc, 1b\n"
@@ -136,13 +146,18 @@ static int inline arch_read_trylock(arch_rwlock_t *lock)
 	return tmp1;
 }
 
-static void inline arch_read_unlock(arch_rwlock_t *lock)
+static inline void arch_read_unlock(arch_rwlock_t *lock)
 {
 	unsigned long tmp1, tmp2;
 
 	__asm__ __volatile__(
 "1:	lduw	[%2], %0\n"
-"	sub	%0, 1, %1\n"
+"	subcc	%0, 1, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+"	tvs	%%icc, 6\n"
+#endif
+
 "	cas	[%2], %0, %1\n"
 "	cmp	%0, %1\n"
 "	bne,pn	%%xcc, 1b\n"
@@ -152,7 +167,7 @@ static void inline arch_read_unlock(arch_rwlock_t *lock)
 	: "memory");
 }
 
-static void inline arch_write_lock(arch_rwlock_t *lock)
+static inline void arch_write_lock(arch_rwlock_t *lock)
 {
 	unsigned long mask, tmp1, tmp2;
 
@@ -177,7 +192,7 @@ static void inline arch_write_lock(arch_rwlock_t *lock)
 	: "memory");
 }
 
-static void inline arch_write_unlock(arch_rwlock_t *lock)
+static inline void arch_write_unlock(arch_rwlock_t *lock)
 {
 	__asm__ __volatile__(
 "	stw		%%g0, [%0]"
@@ -186,7 +201,7 @@ static void inline arch_write_unlock(arch_rwlock_t *lock)
 	: "memory");
 }
 
-static int inline arch_write_trylock(arch_rwlock_t *lock)
+static inline int arch_write_trylock(arch_rwlock_t *lock)
 {
 	unsigned long mask, tmp1, tmp2, result;
 
diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
index 96efa7a..16858bf 100644
--- a/arch/sparc/include/asm/thread_info_32.h
+++ b/arch/sparc/include/asm/thread_info_32.h
@@ -49,6 +49,8 @@ struct thread_info {
 	unsigned long		w_saved;
 
 	struct restart_block	restart_block;
+
+	unsigned long		lowest_stack;
 };
 
 /*
diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
index a5f01ac..703b554 100644
--- a/arch/sparc/include/asm/thread_info_64.h
+++ b/arch/sparc/include/asm/thread_info_64.h
@@ -63,6 +63,8 @@ struct thread_info {
 	struct pt_regs		*kern_una_regs;
 	unsigned int		kern_una_insn;
 
+	unsigned long		lowest_stack;
+
 	unsigned long		fpregs[0] __attribute__ ((aligned(64)));
 };
 
@@ -188,12 +190,13 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
 /* flag bit 4 is available */
 #define TIF_UNALIGNED		5	/* allowed to do unaligned accesses */
-/* flag bit 6 is available */
+#define TIF_GRSEC_SETXID	6	/* update credentials on syscall entry/exit */
 #define TIF_32BIT		7	/* 32-bit binary */
 #define TIF_NOHZ		8	/* in adaptive nohz mode */
 #define TIF_SECCOMP		9	/* secure computing */
 #define TIF_SYSCALL_AUDIT	10	/* syscall auditing active */
 #define TIF_SYSCALL_TRACEPOINT	11	/* syscall tracepoint instrumentation */
+
 /* NOTE: Thread flags >= 12 should be ones we have no interest
  *       in using in assembly, else we can't use the mask as
  *       an immediate value in instructions such as andcc.
@@ -213,12 +216,18 @@ register struct thread_info *current_thread_info_reg asm("g6");
 #define _TIF_SYSCALL_AUDIT	(1<<TIF_SYSCALL_AUDIT)
 #define _TIF_SYSCALL_TRACEPOINT	(1<<TIF_SYSCALL_TRACEPOINT)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
+#define _TIF_GRSEC_SETXID	(1<<TIF_GRSEC_SETXID)
 
 #define _TIF_USER_WORK_MASK	((0xff << TI_FLAG_WSAVED_SHIFT) | \
 				 _TIF_DO_NOTIFY_RESUME_MASK | \
 				 _TIF_NEED_RESCHED)
 #define _TIF_DO_NOTIFY_RESUME_MASK	(_TIF_NOTIFY_RESUME | _TIF_SIGPENDING)
 
+#define _TIF_WORK_SYSCALL		\
+	(_TIF_SYSCALL_TRACE | _TIF_SECCOMP | _TIF_SYSCALL_AUDIT | \
+	 _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ | _TIF_GRSEC_SETXID)
+
+
 /*
  * Thread-synchronous status.
  *
diff --git a/arch/sparc/include/asm/uaccess.h b/arch/sparc/include/asm/uaccess.h
index bd56c28..4b63d83 100644
--- a/arch/sparc/include/asm/uaccess.h
+++ b/arch/sparc/include/asm/uaccess.h
@@ -1,5 +1,6 @@
 #ifndef ___ASM_SPARC_UACCESS_H
 #define ___ASM_SPARC_UACCESS_H
+
 #if defined(__sparc__) && defined(__arch64__)
 #include <asm/uaccess_64.h>
 #else
diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
index 9634d08..f55fe4f 100644
--- a/arch/sparc/include/asm/uaccess_32.h
+++ b/arch/sparc/include/asm/uaccess_32.h
@@ -250,27 +250,46 @@ unsigned long __copy_user(void __user *to, const void __user *from, unsigned lon
 
 static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
 {
-	if (n && __access_ok((unsigned long) to, n))
+	if ((long)n < 0)
+		return n;
+
+	if (n && __access_ok((unsigned long) to, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(from, n, true);
 		return __copy_user(to, (__force void __user *) from, n);
-	else
+	} else
 		return n;
 }
 
 static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
+	if (!__builtin_constant_p(n))
+		check_object_size(from, n, true);
+
 	return __copy_user(to, (__force void __user *) from, n);
 }
 
 static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-	if (n && __access_ok((unsigned long) from, n))
+	if ((long)n < 0)
+		return n;
+
+	if (n && __access_ok((unsigned long) from, n)) {
+		if (!__builtin_constant_p(n))
+			check_object_size(to, n, false);
 		return __copy_user((__force void __user *) to, from, n);
-	else
+	} else
 		return n;
 }
 
 static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	return __copy_user((__force void __user *) to, from, n);
 }
 
diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
index c990a5e..f17b9c1 100644
--- a/arch/sparc/include/asm/uaccess_64.h
+++ b/arch/sparc/include/asm/uaccess_64.h
@@ -10,6 +10,7 @@
 #include <linux/compiler.h>
 #include <linux/string.h>
 #include <linux/thread_info.h>
+#include <linux/kernel.h>
 #include <asm/asi.h>
 #include <asm/spitfire.h>
 #include <asm-generic/uaccess-unaligned.h>
@@ -214,8 +215,15 @@ unsigned long copy_from_user_fixup(void *to, const void __user *from,
 static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long size)
 {
-	unsigned long ret = ___copy_from_user(to, from, size);
+	unsigned long ret;
 
+	if ((long)size < 0 || size > INT_MAX)
+		return size;
+
+	if (!__builtin_constant_p(size))
+		check_object_size(to, size, false);
+
+	ret = ___copy_from_user(to, from, size);
 	if (unlikely(ret))
 		ret = copy_from_user_fixup(to, from, size);
 
@@ -231,8 +239,15 @@ unsigned long copy_to_user_fixup(void __user *to, const void *from,
 static inline unsigned long __must_check
 copy_to_user(void __user *to, const void *from, unsigned long size)
 {
-	unsigned long ret = ___copy_to_user(to, from, size);
+	unsigned long ret;
 
+	if ((long)size < 0 || size > INT_MAX)
+		return size;
+
+	if (!__builtin_constant_p(size))
+		check_object_size(from, size, true);
+
+	ret = ___copy_to_user(to, from, size);
 	if (unlikely(ret))
 		ret = copy_to_user_fixup(to, from, size);
 	return ret;
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 7cf9c6e..6206648 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -4,7 +4,7 @@
 #
 
 asflags-y := -ansi
-ccflags-y := -Werror
+#ccflags-y := -Werror
 
 extra-y     := head_$(BITS).o
 
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 50e7b62..79fae35 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -123,14 +123,14 @@ void show_regs(struct pt_regs *r)
 
         printk("PSR: %08lx PC: %08lx NPC: %08lx Y: %08lx    %s\n",
 	       r->psr, r->pc, r->npc, r->y, print_tainted());
-	printk("PC: <%pS>\n", (void *) r->pc);
+	printk("PC: <%pA>\n", (void *) r->pc);
 	printk("%%G: %08lx %08lx  %08lx %08lx  %08lx %08lx  %08lx %08lx\n",
 	       r->u_regs[0], r->u_regs[1], r->u_regs[2], r->u_regs[3],
 	       r->u_regs[4], r->u_regs[5], r->u_regs[6], r->u_regs[7]);
 	printk("%%O: %08lx %08lx  %08lx %08lx  %08lx %08lx  %08lx %08lx\n",
 	       r->u_regs[8], r->u_regs[9], r->u_regs[10], r->u_regs[11],
 	       r->u_regs[12], r->u_regs[13], r->u_regs[14], r->u_regs[15]);
-	printk("RPC: <%pS>\n", (void *) r->u_regs[15]);
+	printk("RPC: <%pA>\n", (void *) r->u_regs[15]);
 
 	printk("%%L: %08lx %08lx  %08lx %08lx  %08lx %08lx  %08lx %08lx\n",
 	       rw->locals[0], rw->locals[1], rw->locals[2], rw->locals[3],
@@ -167,7 +167,7 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 		rw = (struct reg_window32 *) fp;
 		pc = rw->ins[7];
 		printk("[%08lx : ", pc);
-		printk("%pS ] ", (void *) pc);
+		printk("%pA ] ", (void *) pc);
 		fp = rw->ins[6];
 	} while (++count < 16);
 	printk("\n");
diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
index 027e099..6d4178f 100644
--- a/arch/sparc/kernel/process_64.c
+++ b/arch/sparc/kernel/process_64.c
@@ -161,7 +161,7 @@ static void show_regwindow(struct pt_regs *regs)
 	printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n",
 	       rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]);
 	if (regs->tstate & TSTATE_PRIV)
-		printk("I7: <%pS>\n", (void *) rwk->ins[7]);
+		printk("I7: <%pA>\n", (void *) rwk->ins[7]);
 }
 
 void show_regs(struct pt_regs *regs)
@@ -170,7 +170,7 @@ void show_regs(struct pt_regs *regs)
 
 	printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x    %s\n", regs->tstate,
 	       regs->tpc, regs->tnpc, regs->y, print_tainted());
-	printk("TPC: <%pS>\n", (void *) regs->tpc);
+	printk("TPC: <%pA>\n", (void *) regs->tpc);
 	printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n",
 	       regs->u_regs[0], regs->u_regs[1], regs->u_regs[2],
 	       regs->u_regs[3]);
@@ -183,7 +183,7 @@ void show_regs(struct pt_regs *regs)
 	printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n",
 	       regs->u_regs[12], regs->u_regs[13], regs->u_regs[14],
 	       regs->u_regs[15]);
-	printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
+	printk("RPC: <%pA>\n", (void *) regs->u_regs[15]);
 	show_regwindow(regs);
 	show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]);
 }
@@ -278,7 +278,7 @@ void arch_trigger_all_cpu_backtrace(bool include_self)
 		       ((tp && tp->task) ? tp->task->pid : -1));
 
 		if (gp->tstate & TSTATE_PRIV) {
-			printk("             TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n",
+			printk("             TPC[%pA] O7[%pA] I7[%pA] RPC[%pA]\n",
 			       (void *) gp->tpc,
 			       (void *) gp->o7,
 			       (void *) gp->i7,
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 79cc0d1..ec62734 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -144,7 +144,7 @@ static int __init prom_common_nextprop(phandle node, char *prev, char *buf)
 
 unsigned int prom_early_allocated __initdata;
 
-static struct of_pdt_ops prom_sparc_ops __initdata = {
+static struct of_pdt_ops prom_sparc_ops __initconst = {
 	.nextprop = prom_common_nextprop,
 	.getproplen = prom_getproplen,
 	.getproperty = prom_getproperty,
diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
index c13c9f2..d572c34 100644
--- a/arch/sparc/kernel/ptrace_64.c
+++ b/arch/sparc/kernel/ptrace_64.c
@@ -1060,6 +1060,10 @@ long arch_ptrace(struct task_struct *child, long request,
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 asmlinkage int syscall_trace_enter(struct pt_regs *regs)
 {
 	int ret = 0;
@@ -1070,6 +1074,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
 	if (test_thread_flag(TIF_NOHZ))
 		user_exit();
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	if (test_thread_flag(TIF_SYSCALL_TRACE))
 		ret = tracehook_report_syscall_entry(regs);
 
@@ -1093,6 +1102,11 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
 	if (test_thread_flag(TIF_NOHZ))
 		user_exit();
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index 41aa247..eadfb74 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -883,7 +883,7 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
 		return;
 
 #ifdef CONFIG_DEBUG_DCFLUSH
-	atomic_inc(&dcpage_flushes);
+	atomic_inc_unchecked(&dcpage_flushes);
 #endif
 
 	this_cpu = get_cpu();
@@ -907,7 +907,7 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
 			xcall_deliver(data0, __pa(pg_addr),
 				      (u64) pg_addr, cpumask_of(cpu));
 #ifdef CONFIG_DEBUG_DCFLUSH
-			atomic_inc(&dcpage_flushes_xcall);
+			atomic_inc_unchecked(&dcpage_flushes_xcall);
 #endif
 		}
 	}
@@ -926,7 +926,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
 	preempt_disable();
 
 #ifdef CONFIG_DEBUG_DCFLUSH
-	atomic_inc(&dcpage_flushes);
+	atomic_inc_unchecked(&dcpage_flushes);
 #endif
 	data0 = 0;
 	pg_addr = page_address(page);
@@ -943,7 +943,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
 		xcall_deliver(data0, __pa(pg_addr),
 			      (u64) pg_addr, cpu_online_mask);
 #ifdef CONFIG_DEBUG_DCFLUSH
-		atomic_inc(&dcpage_flushes_xcall);
+		atomic_inc_unchecked(&dcpage_flushes_xcall);
 #endif
 	}
 	__local_flush_dcache_page(page);
diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
index 646988d..b88905f 100644
--- a/arch/sparc/kernel/sys_sparc_32.c
+++ b/arch/sparc/kernel/sys_sparc_32.c
@@ -54,7 +54,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 	if (len > TASK_SIZE - PAGE_SIZE)
 		return -ENOMEM;
 	if (!addr)
-		addr = TASK_UNMAPPED_BASE;
+		addr = current->mm->mmap_base;
 
 	info.flags = 0;
 	info.length = len;
diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
index c85403d..6af95c9 100644
--- a/arch/sparc/kernel/sys_sparc_64.c
+++ b/arch/sparc/kernel/sys_sparc_64.c
@@ -89,13 +89,14 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 	struct vm_area_struct * vma;
 	unsigned long task_size = TASK_SIZE;
 	int do_color_align;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	if (flags & MAP_FIXED) {
 		/* We do not accept a shared mapping if it would violate
 		 * cache aliasing constraints.
 		 */
-		if ((flags & MAP_SHARED) &&
+		if ((filp || (flags & MAP_SHARED)) &&
 		    ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
 			return -EINVAL;
 		return addr;
@@ -110,6 +111,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 	if (filp || (flags & MAP_SHARED))
 		do_color_align = 1;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		if (do_color_align)
 			addr = COLOR_ALIGN(addr, pgoff);
@@ -117,22 +122,28 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
 	info.flags = 0;
 	info.length = len;
-	info.low_limit = TASK_UNMAPPED_BASE;
+	info.low_limit = mm->mmap_base;
 	info.high_limit = min(task_size, VA_EXCLUDE_START);
 	info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) {
 		VM_BUG_ON(addr != -ENOMEM);
 		info.low_limit = VA_EXCLUDE_END;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap;
+#endif
+
 		info.high_limit = task_size;
 		addr = vm_unmapped_area(&info);
 	}
@@ -150,6 +161,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	unsigned long task_size = STACK_TOP32;
 	unsigned long addr = addr0;
 	int do_color_align;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 	struct vm_unmapped_area_info info;
 
 	/* This should only ever run for 32-bit processes.  */
@@ -159,7 +171,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		/* We do not accept a shared mapping if it would violate
 		 * cache aliasing constraints.
 		 */
-		if ((flags & MAP_SHARED) &&
+		if ((filp || (flags & MAP_SHARED)) &&
 		    ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
 			return -EINVAL;
 		return addr;
@@ -172,6 +184,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	if (filp || (flags & MAP_SHARED))
 		do_color_align = 1;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* requesting a specific address */
 	if (addr) {
 		if (do_color_align)
@@ -180,8 +196,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 			addr = PAGE_ALIGN(addr);
 
 		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -191,6 +206,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	info.high_limit = mm->mmap_base;
 	info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	/*
@@ -203,6 +219,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		VM_BUG_ON(addr != -ENOMEM);
 		info.flags = 0;
 		info.low_limit = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap;
+#endif
+
 		info.high_limit = STACK_TOP32;
 		addr = vm_unmapped_area(&info);
 	}
@@ -259,10 +281,14 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
 EXPORT_SYMBOL(get_fb_unmapped_area);
 
 /* Essentially the same as PowerPC.  */
-static unsigned long mmap_rnd(void)
+static unsigned long mmap_rnd(struct mm_struct *mm)
 {
 	unsigned long rnd = 0UL;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (current->flags & PF_RANDOMIZE) {
 		unsigned long val = get_random_int();
 		if (test_thread_flag(TIF_32BIT))
@@ -275,7 +301,7 @@ static unsigned long mmap_rnd(void)
 
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {
-	unsigned long random_factor = mmap_rnd();
+	unsigned long random_factor = mmap_rnd(mm);
 	unsigned long gap;
 
 	/*
@@ -288,6 +314,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 	    gap == RLIM_INFINITY ||
 	    sysctl_legacy_va_layout) {
 		mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base += mm->delta_mmap;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area;
 	} else {
 		/* We know it's 32-bit */
@@ -299,6 +331,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
 			gap = (task_size / 6 * 5);
 
 		mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+#endif
+
 		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
 	}
 }
diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
index 33a17e7..d87fb1f 100644
--- a/arch/sparc/kernel/syscalls.S
+++ b/arch/sparc/kernel/syscalls.S
@@ -52,7 +52,7 @@ sys32_rt_sigreturn:
 #endif
 	.align	32
 1:	ldx	[%g6 + TI_FLAGS], %l5
-	andcc	%l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
+	andcc	%l5, _TIF_WORK_SYSCALL, %g0
 	be,pt	%icc, rtrap
 	 nop
 	call	syscall_trace_leave
@@ -184,7 +184,7 @@ linux_sparc_syscall32:
 
 	srl	%i3, 0, %o3				! IEU0
 	srl	%i2, 0, %o2				! IEU0	Group
-	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
+	andcc	%l0, _TIF_WORK_SYSCALL, %g0
 	bne,pn	%icc, linux_syscall_trace32		! CTI
 	 mov	%i0, %l5				! IEU1
 5:	call	%l7					! CTI	Group brk forced
@@ -208,7 +208,7 @@ linux_sparc_syscall:
 
 	mov	%i3, %o3				! IEU1
 	mov	%i4, %o4				! IEU0	Group
-	andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
+	andcc	%l0, _TIF_WORK_SYSCALL, %g0
 	bne,pn	%icc, linux_syscall_trace		! CTI	Group
 	 mov	%i0, %l5				! IEU0
 2:	call	%l7					! CTI	Group brk forced
@@ -223,7 +223,7 @@ ret_sys_call:
 
 	cmp	%o0, -ERESTART_RESTARTBLOCK
 	bgeu,pn	%xcc, 1f
-	 andcc	%l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
+	 andcc	%l0, _TIF_WORK_SYSCALL, %g0
 	ldx	[%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
 
 2:
diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c
index 6fd386c5..6907d81 100644
--- a/arch/sparc/kernel/traps_32.c
+++ b/arch/sparc/kernel/traps_32.c
@@ -44,6 +44,8 @@ static void instruction_dump(unsigned long *pc)
 #define __SAVE __asm__ __volatile__("save %sp, -0x40, %sp\n\t")
 #define __RESTORE __asm__ __volatile__("restore %g0, %g0, %g0\n\t")
 
+extern void gr_handle_kernel_exploit(void);
+
 void __noreturn die_if_kernel(char *str, struct pt_regs *regs)
 {
 	static int die_counter;
@@ -76,15 +78,17 @@ void __noreturn die_if_kernel(char *str, struct pt_regs *regs)
 		      count++ < 30				&&
                       (((unsigned long) rw) >= PAGE_OFFSET)	&&
 		      !(((unsigned long) rw) & 0x7)) {
-			printk("Caller[%08lx]: %pS\n", rw->ins[7],
+			printk("Caller[%08lx]: %pA\n", rw->ins[7],
 			       (void *) rw->ins[7]);
 			rw = (struct reg_window32 *)rw->ins[6];
 		}
 	}
 	printk("Instruction DUMP:");
 	instruction_dump ((unsigned long *) regs->pc);
-	if(regs->psr & PSR_PS)
+	if(regs->psr & PSR_PS) {
+		gr_handle_kernel_exploit();
 		do_exit(SIGKILL);
+	}
 	do_exit(SIGSEGV);
 }
 
diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index fb6640e..2daada8 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -79,7 +79,7 @@ static void dump_tl1_traplog(struct tl1_traplog *p)
 		       i + 1,
 		       p->trapstack[i].tstate, p->trapstack[i].tpc,
 		       p->trapstack[i].tnpc, p->trapstack[i].tt);
-		printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc);
+		printk("TRAPLOG: TPC<%pA>\n", (void *) p->trapstack[i].tpc);
 	}
 }
 
@@ -99,6 +99,12 @@ void bad_trap(struct pt_regs *regs, long lvl)
 
 	lvl -= 0x100;
 	if (regs->tstate & TSTATE_PRIV) {
+
+#ifdef CONFIG_PAX_REFCOUNT
+		if (lvl == 6)
+			pax_report_refcount_overflow(regs);
+#endif
+
 		sprintf(buffer, "Kernel bad sw trap %lx", lvl);
 		die_if_kernel(buffer, regs);
 	}
@@ -117,11 +123,16 @@ void bad_trap(struct pt_regs *regs, long lvl)
 void bad_trap_tl1(struct pt_regs *regs, long lvl)
 {
 	char buffer[32];
-	
+
 	if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs,
 		       0, lvl, SIGTRAP) == NOTIFY_STOP)
 		return;
 
+#ifdef CONFIG_PAX_REFCOUNT
+	if (lvl == 6)
+		pax_report_refcount_overflow(regs);
+#endif
+
 	dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
 
 	sprintf (buffer, "Bad trap %lx at tl>0", lvl);
@@ -1151,7 +1162,7 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in
 	       regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate);
 	printk("%s" "ERROR(%d): ",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id());
-	printk("TPC<%pS>\n", (void *) regs->tpc);
+	printk("TPC<%pA>\n", (void *) regs->tpc);
 	printk("%s" "ERROR(%d): M_SYND(%lx),  E_SYND(%lx)%s%s\n",
 	       (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
 	       (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT,
@@ -1758,7 +1769,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs)
 		       smp_processor_id(),
 		       (type & 0x1) ? 'I' : 'D',
 		       regs->tpc);
-		printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc);
+		printk(KERN_EMERG "TPC<%pA>\n", (void *) regs->tpc);
 		panic("Irrecoverable Cheetah+ parity error.");
 	}
 
@@ -1766,7 +1777,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs)
 	       smp_processor_id(),
 	       (type & 0x1) ? 'I' : 'D',
 	       regs->tpc);
-	printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_WARNING "TPC<%pA>\n", (void *) regs->tpc);
 }
 
 struct sun4v_error_entry {
@@ -1839,8 +1850,8 @@ struct sun4v_error_entry {
 /*0x38*/u64		reserved_5;
 };
 
-static atomic_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
-static atomic_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
+static atomic_unchecked_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
+static atomic_unchecked_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
 
 static const char *sun4v_err_type_to_str(u8 type)
 {
@@ -1932,7 +1943,7 @@ static void sun4v_report_real_raddr(const char *pfx, struct pt_regs *regs)
 }
 
 static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
-			    int cpu, const char *pfx, atomic_t *ocnt)
+			    int cpu, const char *pfx, atomic_unchecked_t *ocnt)
 {
 	u64 *raw_ptr = (u64 *) ent;
 	u32 attrs;
@@ -1990,8 +2001,8 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
 
 	show_regs(regs);
 
-	if ((cnt = atomic_read(ocnt)) != 0) {
-		atomic_set(ocnt, 0);
+	if ((cnt = atomic_read_unchecked(ocnt)) != 0) {
+		atomic_set_unchecked(ocnt, 0);
 		wmb();
 		printk("%s: Queue overflowed %d times.\n",
 		       pfx, cnt);
@@ -2048,7 +2059,7 @@ out:
  */
 void sun4v_resum_overflow(struct pt_regs *regs)
 {
-	atomic_inc(&sun4v_resum_oflow_cnt);
+	atomic_inc_unchecked(&sun4v_resum_oflow_cnt);
 }
 
 /* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
@@ -2101,7 +2112,7 @@ void sun4v_nonresum_overflow(struct pt_regs *regs)
 	/* XXX Actually even this can make not that much sense.  Perhaps
 	 * XXX we should just pull the plug and panic directly from here?
 	 */
-	atomic_inc(&sun4v_nonresum_oflow_cnt);
+	atomic_inc_unchecked(&sun4v_nonresum_oflow_cnt);
 }
 
 unsigned long sun4v_err_itlb_vaddr;
@@ -2116,9 +2127,9 @@ void sun4v_itlb_error_report(struct pt_regs *regs, int tl)
 
 	printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
 	       regs->tpc, tl);
-	printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_EMERG "SUN4V-ITLB: TPC<%pA>\n", (void *) regs->tpc);
 	printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
-	printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n",
+	printk(KERN_EMERG "SUN4V-ITLB: O7<%pA>\n",
 	       (void *) regs->u_regs[UREG_I7]);
 	printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
 	       "pte[%lx] error[%lx]\n",
@@ -2140,9 +2151,9 @@ void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
 
 	printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
 	       regs->tpc, tl);
-	printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc);
+	printk(KERN_EMERG "SUN4V-DTLB: TPC<%pA>\n", (void *) regs->tpc);
 	printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
-	printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n",
+	printk(KERN_EMERG "SUN4V-DTLB: O7<%pA>\n",
 	       (void *) regs->u_regs[UREG_I7]);
 	printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
 	       "pte[%lx] error[%lx]\n",
@@ -2359,13 +2370,13 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
 			fp = (unsigned long)sf->fp + STACK_BIAS;
 		}
 
-		printk(" [%016lx] %pS\n", pc, (void *) pc);
+		printk(" [%016lx] %pA\n", pc, (void *) pc);
 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
 		if ((pc + 8UL) == (unsigned long) &return_to_handler) {
 			int index = tsk->curr_ret_stack;
 			if (tsk->ret_stack && index >= graph) {
 				pc = tsk->ret_stack[index - graph].ret;
-				printk(" [%016lx] %pS\n", pc, (void *) pc);
+				printk(" [%016lx] %pA\n", pc, (void *) pc);
 				graph++;
 			}
 		}
@@ -2383,6 +2394,8 @@ static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
 	return (struct reg_window *) (fp + STACK_BIAS);
 }
 
+extern void gr_handle_kernel_exploit(void);
+
 void __noreturn die_if_kernel(char *str, struct pt_regs *regs)
 {
 	static int die_counter;
@@ -2411,7 +2424,7 @@ void __noreturn die_if_kernel(char *str, struct pt_regs *regs)
 		while (rw &&
 		       count++ < 30 &&
 		       kstack_valid(tp, (unsigned long) rw)) {
-			printk("Caller[%016lx]: %pS\n", rw->ins[7],
+			printk("Caller[%016lx]: %pA\n", rw->ins[7],
 			       (void *) rw->ins[7]);
 
 			rw = kernel_stack_up(rw);
@@ -2424,8 +2437,10 @@ void __noreturn die_if_kernel(char *str, struct pt_regs *regs)
 		}
 		user_instruction_dump ((unsigned int __user *) regs->tpc);
 	}
-	if (regs->tstate & TSTATE_PRIV)
+	if (regs->tstate & TSTATE_PRIV) {
+		gr_handle_kernel_exploit();
 		do_exit(SIGKILL);
+	}
 	do_exit(SIGSEGV);
 }
 EXPORT_SYMBOL(die_if_kernel);
diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
index 62098a8..547ab2c 100644
--- a/arch/sparc/kernel/unaligned_64.c
+++ b/arch/sparc/kernel/unaligned_64.c
@@ -297,7 +297,7 @@ static void log_unaligned(struct pt_regs *regs)
 	static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5);
 
 	if (__ratelimit(&ratelimit)) {
-		printk("Kernel unaligned access at TPC[%lx] %pS\n",
+		printk("Kernel unaligned access at TPC[%lx] %pA\n",
 		       regs->tpc, (void *) regs->tpc);
 	}
 }
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
index 3269b02..64f5231 100644
--- a/arch/sparc/lib/Makefile
+++ b/arch/sparc/lib/Makefile
@@ -2,7 +2,7 @@
 #
 
 asflags-y := -ansi -DST_DIV0=0x02
-ccflags-y := -Werror
+#ccflags-y := -Werror
 
 lib-$(CONFIG_SPARC32) += ashrdi3.o
 lib-$(CONFIG_SPARC32) += memcpy.o memset.o
diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S
index 85c233d..68500e0 100644
--- a/arch/sparc/lib/atomic_64.S
+++ b/arch/sparc/lib/atomic_64.S
@@ -17,7 +17,12 @@
 ENTRY(atomic_add) /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -27,10 +32,28 @@ ENTRY(atomic_add) /* %o0 = increment, %o1 = atomic_ptr */
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 ENDPROC(atomic_add)
 
+ENTRY(atomic_add_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	lduw	[%o1], %g1
+	add	%g1, %o0, %g7
+	cas	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%icc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic_add_unchecked)
+
 ENTRY(atomic_sub) /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -40,10 +63,28 @@ ENTRY(atomic_sub) /* %o0 = decrement, %o1 = atomic_ptr */
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 ENDPROC(atomic_sub)
 
+ENTRY(atomic_sub_unchecked) /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	lduw	[%o1], %g1
+	sub	%g1, %o0, %g7
+	cas	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%icc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic_sub_unchecked)
+
 ENTRY(atomic_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -53,10 +94,29 @@ ENTRY(atomic_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 ENDPROC(atomic_add_ret)
 
+ENTRY(atomic_add_ret_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	lduw	[%o1], %g1
+	addcc	%g1, %o0, %g7
+	cas	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%icc, 2f
+	 add	%g7, %o0, %g7
+	sra	%g7, 0, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic_add_ret_unchecked)
+
 ENTRY(atomic_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	lduw	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%icc, 6
+#endif
+
 	cas	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%icc, BACKOFF_LABEL(2f, 1b)
@@ -69,7 +129,12 @@ ENDPROC(atomic_sub_ret)
 ENTRY(atomic64_add) /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
@@ -79,10 +144,28 @@ ENTRY(atomic64_add) /* %o0 = increment, %o1 = atomic_ptr */
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 ENDPROC(atomic64_add)
 
+ENTRY(atomic64_add_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o1], %g1
+	addcc	%g1, %o0, %g7
+	casx	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic64_add_unchecked)
+
 ENTRY(atomic64_sub) /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
@@ -92,10 +175,28 @@ ENTRY(atomic64_sub) /* %o0 = decrement, %o1 = atomic_ptr */
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 ENDPROC(atomic64_sub)
 
+ENTRY(atomic64_sub_unchecked) /* %o0 = decrement, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o1], %g1
+	subcc	%g1, %o0, %g7
+	casx	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, 2f
+	 nop
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic64_sub_unchecked)
+
 ENTRY(atomic64_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	add	%g1, %o0, %g7
+	addcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
@@ -105,10 +206,29 @@ ENTRY(atomic64_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
 2:	BACKOFF_SPIN(%o2, %o3, 1b)
 ENDPROC(atomic64_add_ret)
 
+ENTRY(atomic64_add_ret_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
+	BACKOFF_SETUP(%o2)
+1:	ldx	[%o1], %g1
+	addcc	%g1, %o0, %g7
+	casx	[%o1], %g1, %g7
+	cmp	%g1, %g7
+	bne,pn	%xcc, 2f
+	 add	%g7, %o0, %g7
+	mov	%g7, %o0
+	retl
+	 nop
+2:	BACKOFF_SPIN(%o2, %o3, 1b)
+ENDPROC(atomic64_add_ret_unchecked)
+
 ENTRY(atomic64_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */
 	BACKOFF_SETUP(%o2)
 1:	ldx	[%o1], %g1
-	sub	%g1, %o0, %g7
+	subcc	%g1, %o0, %g7
+
+#ifdef CONFIG_PAX_REFCOUNT
+	tvs	%xcc, 6
+#endif
+
 	casx	[%o1], %g1, %g7
 	cmp	%g1, %g7
 	bne,pn	%xcc, BACKOFF_LABEL(2f, 1b)
diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c
index 323335b..ed85ea2 100644
--- a/arch/sparc/lib/ksyms.c
+++ b/arch/sparc/lib/ksyms.c
@@ -100,12 +100,18 @@ EXPORT_SYMBOL(__clear_user);
 
 /* Atomic counter implementation. */
 EXPORT_SYMBOL(atomic_add);
+EXPORT_SYMBOL(atomic_add_unchecked);
 EXPORT_SYMBOL(atomic_add_ret);
+EXPORT_SYMBOL(atomic_add_ret_unchecked);
 EXPORT_SYMBOL(atomic_sub);
+EXPORT_SYMBOL(atomic_sub_unchecked);
 EXPORT_SYMBOL(atomic_sub_ret);
 EXPORT_SYMBOL(atomic64_add);
+EXPORT_SYMBOL(atomic64_add_unchecked);
 EXPORT_SYMBOL(atomic64_add_ret);
+EXPORT_SYMBOL(atomic64_add_ret_unchecked);
 EXPORT_SYMBOL(atomic64_sub);
+EXPORT_SYMBOL(atomic64_sub_unchecked);
 EXPORT_SYMBOL(atomic64_sub_ret);
 EXPORT_SYMBOL(atomic64_dec_if_positive);
 
diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
index 30c3ecc..736f015 100644
--- a/arch/sparc/mm/Makefile
+++ b/arch/sparc/mm/Makefile
@@ -2,7 +2,7 @@
 #
 
 asflags-y := -ansi
-ccflags-y := -Werror
+#ccflags-y := -Werror
 
 obj-$(CONFIG_SPARC64)   += ultra.o tlb.o tsb.o gup.o
 obj-y                   += fault_$(BITS).o
diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index 908e8c1..1524793 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -21,6 +21,9 @@
 #include <linux/perf_event.h>
 #include <linux/interrupt.h>
 #include <linux/kdebug.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/compiler.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -156,6 +159,277 @@ static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault)
 	return safe_compute_effective_address(regs, insn);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+#ifdef CONFIG_PAX_DLRESOLVE
+static void pax_emuplt_close(struct vm_area_struct *vma)
+{
+	vma->vm_mm->call_dl_resolve = 0UL;
+}
+
+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	unsigned int *kaddr;
+
+	vmf->page = alloc_page(GFP_HIGHUSER);
+	if (!vmf->page)
+		return VM_FAULT_OOM;
+
+	kaddr = kmap(vmf->page);
+	memset(kaddr, 0, PAGE_SIZE);
+	kaddr[0] = 0x9DE3BFA8U; /* save */
+	flush_dcache_page(vmf->page);
+	kunmap(vmf->page);
+	return VM_FAULT_MAJOR;
+}
+
+static const struct vm_operations_struct pax_vm_ops = {
+	.close = pax_emuplt_close,
+	.fault = pax_emuplt_fault
+};
+
+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr)
+{
+	int ret;
+
+	INIT_LIST_HEAD(&vma->anon_vma_chain);
+	vma->vm_mm = current->mm;
+	vma->vm_start = addr;
+	vma->vm_end = addr + PAGE_SIZE;
+	vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
+	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
+	vma->vm_ops = &pax_vm_ops;
+
+	ret = insert_vm_struct(current->mm, vma);
+	if (ret)
+		return ret;
+
+	++current->mm->total_vm;
+	return 0;
+}
+#endif
+
+/*
+ * PaX: decide what to do with offenders (regs->pc = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when patched PLT trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: patched PLT emulation #1 */
+		unsigned int sethi1, sethi2, jmpl;
+
+		err = get_user(sethi1, (unsigned int *)regs->pc);
+		err |= get_user(sethi2, (unsigned int *)(regs->pc+4));
+		err |= get_user(jmpl, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x03000000U &&
+		    (jmpl & 0xFFFFE000U) == 0x81C06000U)
+		{
+			unsigned int addr;
+
+			regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10;
+			addr = regs->u_regs[UREG_G1];
+			addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
+			regs->pc = addr;
+			regs->npc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #2 */
+		unsigned int ba;
+
+		err = get_user(ba, (unsigned int *)regs->pc);
+
+		if (err)
+			break;
+
+		if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) {
+			unsigned int addr;
+
+			if ((ba & 0xFFC00000U) == 0x30800000U)
+				addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2);
+			else
+				addr = regs->pc + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
+			regs->pc = addr;
+			regs->npc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #3 */
+		unsigned int sethi, bajmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->pc);
+		err |= get_user(bajmpl, (unsigned int *)(regs->pc+4));
+		err |= get_user(nop, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) &&
+		    nop == 0x01000000U)
+		{
+			unsigned int addr;
+
+			addr = (sethi & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] = addr;
+			if ((bajmpl & 0xFFFFE000U) == 0x81C06000U)
+				addr += (((bajmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
+			else
+				addr = regs->pc + ((((bajmpl | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
+			regs->pc = addr;
+			regs->npc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation step 1 */
+		unsigned int sethi, ba, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->pc);
+		err |= get_user(ba, (unsigned int *)(regs->pc+4));
+		err |= get_user(nop, (unsigned int *)(regs->pc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) &&
+		    nop == 0x01000000U)
+		{
+			unsigned int addr, save, call;
+
+			if ((ba & 0xFFC00000U) == 0x30800000U)
+				addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2);
+			else
+				addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
+
+			err = get_user(save, (unsigned int *)addr);
+			err |= get_user(call, (unsigned int *)(addr+4));
+			err |= get_user(nop, (unsigned int *)(addr+8));
+			if (err)
+				break;
+
+#ifdef CONFIG_PAX_DLRESOLVE
+			if (save == 0x9DE3BFA8U &&
+			    (call & 0xC0000000U) == 0x40000000U &&
+			    nop == 0x01000000U)
+			{
+				struct vm_area_struct *vma;
+				unsigned long call_dl_resolve;
+
+				down_read(&current->mm->mmap_sem);
+				call_dl_resolve = current->mm->call_dl_resolve;
+				up_read(&current->mm->mmap_sem);
+				if (likely(call_dl_resolve))
+					goto emulate;
+
+				vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+
+				down_write(&current->mm->mmap_sem);
+				if (current->mm->call_dl_resolve) {
+					call_dl_resolve = current->mm->call_dl_resolve;
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					goto emulate;
+				}
+
+				call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE);
+				if (!vma || (call_dl_resolve & ~PAGE_MASK)) {
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				if (pax_insert_vma(vma, call_dl_resolve)) {
+					up_write(&current->mm->mmap_sem);
+					kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				current->mm->call_dl_resolve = call_dl_resolve;
+				up_write(&current->mm->mmap_sem);
+
+emulate:
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->pc = call_dl_resolve;
+				regs->npc = addr+4;
+				return 3;
+			}
+#endif
+
+			/* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */
+			if ((save & 0xFFC00000U) == 0x05000000U &&
+			    (call & 0xFFFFE000U) == 0x85C0A000U &&
+			    nop == 0x01000000U)
+			{
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->u_regs[UREG_G2] = addr + 4;
+				addr = (save & 0x003FFFFFU) << 10;
+				addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
+				regs->pc = addr;
+				regs->npc = addr+4;
+				return 3;
+			}
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation step 2 */
+		unsigned int save, call, nop;
+
+		err = get_user(save, (unsigned int *)(regs->pc-4));
+		err |= get_user(call, (unsigned int *)regs->pc);
+		err |= get_user(nop, (unsigned int *)(regs->pc+4));
+		if (err)
+			break;
+
+		if (save == 0x9DE3BFA8U &&
+		    (call & 0xC0000000U) == 0x40000000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2);
+
+			regs->u_regs[UREG_RETPC] = regs->pc;
+			regs->pc = dl_resolve;
+			regs->npc = dl_resolve+4;
+			return 3;
+		}
+	} while (0);
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 8; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 static noinline void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
 				      int text_fault)
 {
@@ -226,6 +500,24 @@ good_area:
 		if (!(vma->vm_flags & VM_WRITE))
 			goto bad_area;
 	} else {
+
+#ifdef CONFIG_PAX_PAGEEXEC
+		if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) {
+			up_read(&mm->mmap_sem);
+			switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+			case 2:
+			case 3:
+				return;
+#endif
+
+			}
+			pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		/* Allow reads even for write-only mappings */
 		if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
 			goto bad_area;
diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
index 587cd05..fbdf17a 100644
--- a/arch/sparc/mm/fault_64.c
+++ b/arch/sparc/mm/fault_64.c
@@ -22,6 +22,9 @@
 #include <linux/kdebug.h>
 #include <linux/percpu.h>
 #include <linux/context_tracking.h>
+#include <linux/slab.h>
+#include <linux/pagemap.h>
+#include <linux/compiler.h>
 
 #include <asm/page.h>
 #include <asm/pgtable.h>
@@ -76,7 +79,7 @@ static void __kprobes bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
 	printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n",
 	       regs->tpc);
 	printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]);
-	printk("OOPS: RPC <%pS>\n", (void *) regs->u_regs[15]);
+	printk("OOPS: RPC <%pA>\n", (void *) regs->u_regs[15]);
 	printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr);
 	dump_stack();
 	unhandled_fault(regs->tpc, current, regs);
@@ -279,6 +282,466 @@ static void noinline __kprobes bogus_32bit_fault_tpc(struct pt_regs *regs)
 	show_regs(regs);
 }
 
+#ifdef CONFIG_PAX_PAGEEXEC
+#ifdef CONFIG_PAX_DLRESOLVE
+static void pax_emuplt_close(struct vm_area_struct *vma)
+{
+	vma->vm_mm->call_dl_resolve = 0UL;
+}
+
+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
+{
+	unsigned int *kaddr;
+
+	vmf->page = alloc_page(GFP_HIGHUSER);
+	if (!vmf->page)
+		return VM_FAULT_OOM;
+
+	kaddr = kmap(vmf->page);
+	memset(kaddr, 0, PAGE_SIZE);
+	kaddr[0] = 0x9DE3BFA8U; /* save */
+	flush_dcache_page(vmf->page);
+	kunmap(vmf->page);
+	return VM_FAULT_MAJOR;
+}
+
+static const struct vm_operations_struct pax_vm_ops = {
+	.close = pax_emuplt_close,
+	.fault = pax_emuplt_fault
+};
+
+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr)
+{
+	int ret;
+
+	INIT_LIST_HEAD(&vma->anon_vma_chain);
+	vma->vm_mm = current->mm;
+	vma->vm_start = addr;
+	vma->vm_end = addr + PAGE_SIZE;
+	vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
+	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
+	vma->vm_ops = &pax_vm_ops;
+
+	ret = insert_vm_struct(current->mm, vma);
+	if (ret)
+		return ret;
+
+	++current->mm->total_vm;
+	return 0;
+}
+#endif
+
+/*
+ * PaX: decide what to do with offenders (regs->tpc = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when patched PLT trampoline was detected
+ *         3 when unpatched PLT trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+
+#ifdef CONFIG_PAX_EMUPLT
+	int err;
+
+	do { /* PaX: patched PLT emulation #1 */
+		unsigned int sethi1, sethi2, jmpl;
+
+		err = get_user(sethi1, (unsigned int *)regs->tpc);
+		err |= get_user(sethi2, (unsigned int *)(regs->tpc+4));
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x03000000U &&
+		    (jmpl & 0xFFFFE000U) == 0x81C06000U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10;
+			addr = regs->u_regs[UREG_G1];
+			addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #2 */
+		unsigned int ba;
+
+		err = get_user(ba, (unsigned int *)regs->tpc);
+
+		if (err)
+			break;
+
+		if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) {
+			unsigned long addr;
+
+			if ((ba & 0xFFC00000U) == 0x30800000U)
+				addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
+			else
+				addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #3 */
+		unsigned int sethi, bajmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(bajmpl, (unsigned int *)(regs->tpc+4));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			addr = (sethi & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] = addr;
+			if ((bajmpl & 0xFFFFE000U) == 0x81C06000U)
+				addr += (((bajmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
+			else
+				addr = regs->tpc + ((((bajmpl | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #4 */
+		unsigned int sethi, mov1, call, mov2;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(mov1, (unsigned int *)(regs->tpc+4));
+		err |= get_user(call, (unsigned int *)(regs->tpc+8));
+		err |= get_user(mov2, (unsigned int *)(regs->tpc+12));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    mov1 == 0x8210000FU &&
+		    (call & 0xC0000000U) == 0x40000000U &&
+		    mov2 == 0x9E100001U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC];
+			addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #5 */
+		unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(sethi1, (unsigned int *)(regs->tpc+4));
+		err |= get_user(sethi2, (unsigned int *)(regs->tpc+8));
+		err |= get_user(or1, (unsigned int *)(regs->tpc+12));
+		err |= get_user(or2, (unsigned int *)(regs->tpc+16));
+		err |= get_user(sllx, (unsigned int *)(regs->tpc+20));
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+24));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+28));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x0B000000U &&
+		    (or1 & 0xFFFFE000U) == 0x82106000U &&
+		    (or2 & 0xFFFFE000U) == 0x8A116000U &&
+		    sllx == 0x83287020U &&
+		    jmpl == 0x81C04005U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU);
+			regs->u_regs[UREG_G1] <<= 32;
+			regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU);
+			addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5];
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: patched PLT emulation #6 */
+		unsigned int sethi, sethi1, sethi2, sllx, or,  jmpl, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(sethi1, (unsigned int *)(regs->tpc+4));
+		err |= get_user(sethi2, (unsigned int *)(regs->tpc+8));
+		err |= get_user(sllx, (unsigned int *)(regs->tpc+12));
+		err |= get_user(or, (unsigned int *)(regs->tpc+16));
+		err |= get_user(jmpl, (unsigned int *)(regs->tpc+20));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+24));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (sethi1 & 0xFFC00000U) == 0x03000000U &&
+		    (sethi2 & 0xFFC00000U) == 0x0B000000U &&
+		    sllx == 0x83287020U &&
+		    (or & 0xFFFFE000U) == 0x8A116000U &&
+		    jmpl == 0x81C04005U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] <<= 32;
+			regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU);
+			addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5];
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: unpatched PLT emulation step 1 */
+		unsigned int sethi, ba, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(ba, (unsigned int *)(regs->tpc+4));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+			unsigned int save, call;
+			unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl;
+
+			if ((ba & 0xFFC00000U) == 0x30800000U)
+				addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
+			else
+				addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			err = get_user(save, (unsigned int *)addr);
+			err |= get_user(call, (unsigned int *)(addr+4));
+			err |= get_user(nop, (unsigned int *)(addr+8));
+			if (err)
+				break;
+
+#ifdef CONFIG_PAX_DLRESOLVE
+			if (save == 0x9DE3BFA8U &&
+			    (call & 0xC0000000U) == 0x40000000U &&
+			    nop == 0x01000000U)
+			{
+				struct vm_area_struct *vma;
+				unsigned long call_dl_resolve;
+
+				down_read(&current->mm->mmap_sem);
+				call_dl_resolve = current->mm->call_dl_resolve;
+				up_read(&current->mm->mmap_sem);
+				if (likely(call_dl_resolve))
+					goto emulate;
+
+				vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+
+				down_write(&current->mm->mmap_sem);
+				if (current->mm->call_dl_resolve) {
+					call_dl_resolve = current->mm->call_dl_resolve;
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					goto emulate;
+				}
+
+				call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE);
+				if (!vma || (call_dl_resolve & ~PAGE_MASK)) {
+					up_write(&current->mm->mmap_sem);
+					if (vma)
+						kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				if (pax_insert_vma(vma, call_dl_resolve)) {
+					up_write(&current->mm->mmap_sem);
+					kmem_cache_free(vm_area_cachep, vma);
+					return 1;
+				}
+
+				current->mm->call_dl_resolve = call_dl_resolve;
+				up_write(&current->mm->mmap_sem);
+
+emulate:
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->tpc = call_dl_resolve;
+				regs->tnpc = addr+4;
+				return 3;
+			}
+#endif
+
+			/* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */
+			if ((save & 0xFFC00000U) == 0x05000000U &&
+			    (call & 0xFFFFE000U) == 0x85C0A000U &&
+			    nop == 0x01000000U)
+			{
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->u_regs[UREG_G2] = addr + 4;
+				addr = (save & 0x003FFFFFU) << 10;
+				addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
+
+				if (test_thread_flag(TIF_32BIT))
+					addr &= 0xFFFFFFFFUL;
+
+				regs->tpc = addr;
+				regs->tnpc = addr+4;
+				return 3;
+			}
+
+			/* PaX: 64-bit PLT stub */
+			err = get_user(sethi1, (unsigned int *)addr);
+			err |= get_user(sethi2, (unsigned int *)(addr+4));
+			err |= get_user(or1, (unsigned int *)(addr+8));
+			err |= get_user(or2, (unsigned int *)(addr+12));
+			err |= get_user(sllx, (unsigned int *)(addr+16));
+			err |= get_user(add, (unsigned int *)(addr+20));
+			err |= get_user(jmpl, (unsigned int *)(addr+24));
+			err |= get_user(nop, (unsigned int *)(addr+28));
+			if (err)
+				break;
+
+			if ((sethi1 & 0xFFC00000U) == 0x09000000U &&
+			    (sethi2 & 0xFFC00000U) == 0x0B000000U &&
+			    (or1 & 0xFFFFE000U) == 0x88112000U &&
+			    (or2 & 0xFFFFE000U) == 0x8A116000U &&
+			    sllx == 0x89293020U &&
+			    add == 0x8A010005U &&
+			    jmpl == 0x89C14000U &&
+			    nop == 0x01000000U)
+			{
+				regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
+				regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU);
+				regs->u_regs[UREG_G4] <<= 32;
+				regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU);
+				regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4];
+				regs->u_regs[UREG_G4] = addr + 24;
+				addr = regs->u_regs[UREG_G5];
+				regs->tpc = addr;
+				regs->tnpc = addr+4;
+				return 3;
+			}
+		}
+	} while (0);
+
+#ifdef CONFIG_PAX_DLRESOLVE
+	do { /* PaX: unpatched PLT emulation step 2 */
+		unsigned int save, call, nop;
+
+		err = get_user(save, (unsigned int *)(regs->tpc-4));
+		err |= get_user(call, (unsigned int *)regs->tpc);
+		err |= get_user(nop, (unsigned int *)(regs->tpc+4));
+		if (err)
+			break;
+
+		if (save == 0x9DE3BFA8U &&
+		    (call & 0xC0000000U) == 0x40000000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				dl_resolve &= 0xFFFFFFFFUL;
+
+			regs->u_regs[UREG_RETPC] = regs->tpc;
+			regs->tpc = dl_resolve;
+			regs->tnpc = dl_resolve+4;
+			return 3;
+		}
+	} while (0);
+#endif
+
+	do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */
+		unsigned int sethi, ba, nop;
+
+		err = get_user(sethi, (unsigned int *)regs->tpc);
+		err |= get_user(ba, (unsigned int *)(regs->tpc+4));
+		err |= get_user(nop, (unsigned int *)(regs->tpc+8));
+
+		if (err)
+			break;
+
+		if ((sethi & 0xFFC00000U) == 0x03000000U &&
+		    (ba & 0xFFF00000U) == 0x30600000U &&
+		    nop == 0x01000000U)
+		{
+			unsigned long addr;
+
+			addr = (sethi & 0x003FFFFFU) << 10;
+			regs->u_regs[UREG_G1] = addr;
+			addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
+
+			if (test_thread_flag(TIF_32BIT))
+				addr &= 0xFFFFFFFFUL;
+
+			regs->tpc = addr;
+			regs->tnpc = addr+4;
+			return 2;
+		}
+	} while (0);
+
+#endif
+
+	return 1;
+}
+
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	unsigned long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 8; i++) {
+		unsigned int c;
+		if (get_user(c, (unsigned int *)pc+i))
+			printk(KERN_CONT "???????? ");
+		else
+			printk(KERN_CONT "%08x ", c);
+	}
+	printk("\n");
+}
+#endif
+
 asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
 {
 	enum ctx_state prev_state = exception_enter();
@@ -350,6 +813,29 @@ retry:
 	if (!vma)
 		goto bad_area;
 
+#ifdef CONFIG_PAX_PAGEEXEC
+	/* PaX: detect ITLB misses on non-exec pages */
+	if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address &&
+	    !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB))
+	{
+		if (address != regs->tpc)
+			goto good_area;
+
+		up_read(&mm->mmap_sem);
+		switch (pax_handle_fetch_fault(regs)) {
+
+#ifdef CONFIG_PAX_EMUPLT
+		case 2:
+		case 3:
+			return;
+#endif
+
+		}
+		pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS));
+		do_group_exit(SIGKILL);
+	}
+#endif
+
 	/* Pure DTLB misses do not tell us whether the fault causing
 	 * load/store/atomic was a write or not, it only says that there
 	 * was no match.  So in such a case we (carefully) read the
diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
index d329537..2c3746a 100644
--- a/arch/sparc/mm/hugetlbpage.c
+++ b/arch/sparc/mm/hugetlbpage.c
@@ -25,8 +25,10 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp,
 							unsigned long addr,
 							unsigned long len,
 							unsigned long pgoff,
-							unsigned long flags)
+							unsigned long flags,
+							unsigned long offset)
 {
+	struct mm_struct *mm = current->mm;
 	unsigned long task_size = TASK_SIZE;
 	struct vm_unmapped_area_info info;
 
@@ -35,15 +37,22 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp,
 
 	info.flags = 0;
 	info.length = len;
-	info.low_limit = TASK_UNMAPPED_BASE;
+	info.low_limit = mm->mmap_base;
 	info.high_limit = min(task_size, VA_EXCLUDE_START);
 	info.align_mask = PAGE_MASK & ~HPAGE_MASK;
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) {
 		VM_BUG_ON(addr != -ENOMEM);
 		info.low_limit = VA_EXCLUDE_END;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap;
+#endif
+
 		info.high_limit = task_size;
 		addr = vm_unmapped_area(&info);
 	}
@@ -55,7 +64,8 @@ static unsigned long
 hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 				  const unsigned long len,
 				  const unsigned long pgoff,
-				  const unsigned long flags)
+				  const unsigned long flags,
+				  const unsigned long offset)
 {
 	struct mm_struct *mm = current->mm;
 	unsigned long addr = addr0;
@@ -70,6 +80,7 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	info.high_limit = mm->mmap_base;
 	info.align_mask = PAGE_MASK & ~HPAGE_MASK;
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	/*
@@ -82,6 +93,12 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		VM_BUG_ON(addr != -ENOMEM);
 		info.flags = 0;
 		info.low_limit = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap;
+#endif
+
 		info.high_limit = STACK_TOP32;
 		addr = vm_unmapped_area(&info);
 	}
@@ -96,6 +113,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
 	unsigned long task_size = TASK_SIZE;
+	unsigned long offset = gr_rand_threadstack_offset(mm, file, flags);
 
 	if (test_thread_flag(TIF_32BIT))
 		task_size = STACK_TOP32;
@@ -111,19 +129,22 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		return addr;
 	}
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = ALIGN(addr, HPAGE_SIZE);
 		vma = find_vma(mm, addr);
-		if (task_size - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 	if (mm->get_unmapped_area == arch_get_unmapped_area)
 		return hugetlb_get_unmapped_area_bottomup(file, addr, len,
-				pgoff, flags);
+				pgoff, flags, offset);
 	else
 		return hugetlb_get_unmapped_area_topdown(file, addr, len,
-				pgoff, flags);
+				pgoff, flags, offset);
 }
 
 pte_t *huge_pte_alloc(struct mm_struct *mm,
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 2cfb0f2..e917d9f 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -189,9 +189,9 @@ unsigned long sparc64_kern_sec_context __read_mostly;
 int num_kernel_image_mappings;
 
 #ifdef CONFIG_DEBUG_DCFLUSH
-atomic_t dcpage_flushes = ATOMIC_INIT(0);
+atomic_unchecked_t dcpage_flushes = ATOMIC_INIT(0);
 #ifdef CONFIG_SMP
-atomic_t dcpage_flushes_xcall = ATOMIC_INIT(0);
+atomic_unchecked_t dcpage_flushes_xcall = ATOMIC_INIT(0);
 #endif
 #endif
 
@@ -199,7 +199,7 @@ inline void flush_dcache_page_impl(struct page *page)
 {
 	BUG_ON(tlb_type == hypervisor);
 #ifdef CONFIG_DEBUG_DCFLUSH
-	atomic_inc(&dcpage_flushes);
+	atomic_inc_unchecked(&dcpage_flushes);
 #endif
 
 #ifdef DCACHE_ALIASING_POSSIBLE
@@ -471,10 +471,10 @@ void mmu_info(struct seq_file *m)
 
 #ifdef CONFIG_DEBUG_DCFLUSH
 	seq_printf(m, "DCPageFlushes\t: %d\n",
-		   atomic_read(&dcpage_flushes));
+		   atomic_read_unchecked(&dcpage_flushes));
 #ifdef CONFIG_SMP
 	seq_printf(m, "DCPageFlushesXC\t: %d\n",
-		   atomic_read(&dcpage_flushes_xcall));
+		   atomic_read_unchecked(&dcpage_flushes_xcall));
 #endif /* CONFIG_SMP */
 #endif /* CONFIG_DEBUG_DCFLUSH */
 }
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 4f3006b..453f625f 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -192,6 +192,7 @@ source "kernel/Kconfig.hz"
 
 config KEXEC
 	bool "kexec system call"
+	depends on !GRKERNSEC_KMEM
 	---help---
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
diff --git a/arch/tile/include/asm/atomic_64.h b/arch/tile/include/asm/atomic_64.h
index 7b11c5f..755a026 100644
--- a/arch/tile/include/asm/atomic_64.h
+++ b/arch/tile/include/asm/atomic_64.h
@@ -105,6 +105,16 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
 
 #define atomic64_inc_not_zero(v)	atomic64_add_unless((v), 1, 0)
 
+#define atomic64_read_unchecked(v)		atomic64_read(v)
+#define atomic64_set_unchecked(v, i)		atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v)		atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v)	atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v)		atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v)		atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v)	atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v)		atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n)	atomic64_cmpxchg((v), (o), (n))
+
 /* Define this to indicate that cmpxchg is an efficient operation. */
 #define __HAVE_ARCH_CMPXCHG
 
diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h
index 6160761..00cac88 100644
--- a/arch/tile/include/asm/cache.h
+++ b/arch/tile/include/asm/cache.h
@@ -15,11 +15,12 @@
 #ifndef _ASM_TILE_CACHE_H
 #define _ASM_TILE_CACHE_H
 
+#include <linux/const.h>
 #include <arch/chip.h>
 
 /* bytes per L1 data cache line */
 #define L1_CACHE_SHIFT		CHIP_L1D_LOG_LINE_SIZE()
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 /* bytes per L2 cache line */
 #define L2_CACHE_SHIFT		CHIP_L2_LOG_LINE_SIZE()
diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h
index b6cde32..c0cb736 100644
--- a/arch/tile/include/asm/uaccess.h
+++ b/arch/tile/include/asm/uaccess.h
@@ -414,9 +414,9 @@ static inline unsigned long __must_check copy_from_user(void *to,
 					  const void __user *from,
 					  unsigned long n)
 {
-	int sz = __compiletime_object_size(to);
+	size_t sz = __compiletime_object_size(to);
 
-	if (likely(sz == -1 || sz >= n))
+	if (likely(sz == (size_t)-1 || sz >= n))
 		n = _copy_from_user(to, from, n);
 	else
 		copy_from_user_overflow();
diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
index e514899..f8743c4 100644
--- a/arch/tile/mm/hugetlbpage.c
+++ b/arch/tile/mm/hugetlbpage.c
@@ -207,6 +207,7 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
 	info.high_limit = TASK_SIZE;
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
+	info.threadstack_offset = 0;
 	return vm_unmapped_area(&info);
 }
 
@@ -224,6 +225,7 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
 	info.high_limit = current->mm->mmap_base;
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
+	info.threadstack_offset = 0;
 	addr = vm_unmapped_area(&info);
 
 	/*
diff --git a/arch/um/Makefile b/arch/um/Makefile
index e4b1a96..16162f8 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -72,6 +72,10 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
 	$(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
 	$(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include
 
+ifdef CONSTIFY_PLUGIN
+USER_CFLAGS	+= -fplugin-arg-constify_plugin-no-constify
+endif
+
 #This will adjust *FLAGS accordingly to the platform.
 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
 
diff --git a/arch/um/include/asm/cache.h b/arch/um/include/asm/cache.h
index 19e1bdd..3665b77 100644
--- a/arch/um/include/asm/cache.h
+++ b/arch/um/include/asm/cache.h
@@ -1,6 +1,7 @@
 #ifndef __UM_CACHE_H
 #define __UM_CACHE_H
 
+#include <linux/const.h>
 
 #if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT)
 # define L1_CACHE_SHIFT		(CONFIG_X86_L1_CACHE_SHIFT)
@@ -12,6 +13,6 @@
 # define L1_CACHE_SHIFT		5
 #endif
 
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #endif
diff --git a/arch/um/include/asm/kmap_types.h b/arch/um/include/asm/kmap_types.h
index 2e0a6b1..a64d0f5 100644
--- a/arch/um/include/asm/kmap_types.h
+++ b/arch/um/include/asm/kmap_types.h
@@ -8,6 +8,6 @@
 
 /* No more #include "asm/arch/kmap_types.h" ! */
 
-#define KM_TYPE_NR 14
+#define KM_TYPE_NR 15
 
 #endif
diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h
index 5ff53d9..5850cdf 100644
--- a/arch/um/include/asm/page.h
+++ b/arch/um/include/asm/page.h
@@ -14,6 +14,9 @@
 #define PAGE_SIZE	(_AC(1, UL) << PAGE_SHIFT)
 #define PAGE_MASK	(~(PAGE_SIZE-1))
 
+#define ktla_ktva(addr)			(addr)
+#define ktva_ktla(addr)			(addr)
+
 #ifndef __ASSEMBLY__
 
 struct page;
diff --git a/arch/um/include/asm/pgtable-3level.h b/arch/um/include/asm/pgtable-3level.h
index 0032f92..cd151e0 100644
--- a/arch/um/include/asm/pgtable-3level.h
+++ b/arch/um/include/asm/pgtable-3level.h
@@ -58,6 +58,7 @@
 #define pud_present(x)	(pud_val(x) & _PAGE_PRESENT)
 #define pud_populate(mm, pud, pmd) \
 	set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
+#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd))
 
 #ifdef CONFIG_64BIT
 #define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval))
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index f17bca8..48adb87 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -356,22 +356,6 @@ int singlestepping(void * t)
 	return 2;
 }
 
-/*
- * Only x86 and x86_64 have an arch_align_stack().
- * All other arches have "#define arch_align_stack(x) (x)"
- * in their asm/exec.h
- * As this is included in UML from asm-um/system-generic.h,
- * we can use it to behave as the subarch does.
- */
-#ifndef arch_align_stack
-unsigned long arch_align_stack(unsigned long sp)
-{
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
-	return sp & ~0xf;
-}
-#endif
-
 unsigned long get_wchan(struct task_struct *p)
 {
 	unsigned long stack_page, sp, ip;
diff --git a/arch/unicore32/include/asm/cache.h b/arch/unicore32/include/asm/cache.h
index ad8f795..2c7eec6 100644
--- a/arch/unicore32/include/asm/cache.h
+++ b/arch/unicore32/include/asm/cache.h
@@ -12,8 +12,10 @@
 #ifndef __UNICORE_CACHE_H__
 #define __UNICORE_CACHE_H__
 
-#define L1_CACHE_SHIFT		(5)
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#include <linux/const.h>
+
+#define L1_CACHE_SHIFT		5
+#define L1_CACHE_BYTES		(_AC(1,UL) << L1_CACHE_SHIFT)
 
 /*
  * Memory returned by kmalloc() may be used for DMA, so we must make
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 27adfd9..2362ac6 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -22,6 +22,7 @@ config X86_64
 config X86
 	def_bool y
 	select ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
+	select ARCH_HAS_FAST_MULTIPLIER
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
 	select HAVE_AOUT if X86_32
@@ -128,7 +129,7 @@ config X86
 	select RTC_LIB
 	select HAVE_DEBUG_STACKOVERFLOW
 	select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64
-	select HAVE_CC_STACKPROTECTOR
+	select HAVE_CC_STACKPROTECTOR if X86_64 || !PAX_MEMORY_UDEREF
 	select GENERIC_CPU_AUTOPROBE
 	select HAVE_ARCH_AUDITSYSCALL
 	select ARCH_SUPPORTS_ATOMIC_RMW
@@ -253,7 +254,7 @@ config X86_HT
 
 config X86_32_LAZY_GS
 	def_bool y
-	depends on X86_32 && !CC_STACKPROTECTOR
+	depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF
 
 config ARCH_HWEIGHT_CFLAGS
 	string
@@ -549,6 +550,7 @@ config SCHED_OMIT_FRAME_POINTER
 
 menuconfig HYPERVISOR_GUEST
 	bool "Linux guest support"
+	depends on !GRKERNSEC_CONFIG_AUTO || GRKERNSEC_CONFIG_VIRT_GUEST || (GRKERNSEC_CONFIG_VIRT_HOST && GRKERNSEC_CONFIG_VIRT_XEN)
 	---help---
 	  Say Y here to enable options for running Linux under various hyper-
 	  visors. This option enables basic hypervisor detection and platform
@@ -1076,6 +1078,7 @@ choice
 
 config NOHIGHMEM
 	bool "off"
+	depends on !(PAX_PAGEEXEC && PAX_ENABLE_PAE)
 	---help---
 	  Linux can use up to 64 Gigabytes of physical memory on x86 systems.
 	  However, the address space of 32-bit x86 processors is only 4
@@ -1112,6 +1115,7 @@ config NOHIGHMEM
 
 config HIGHMEM4G
 	bool "4GB"
+	depends on !(PAX_PAGEEXEC && PAX_ENABLE_PAE)
 	---help---
 	  Select this if you have a 32-bit processor and between 1 and 4
 	  gigabytes of physical RAM.
@@ -1164,7 +1168,7 @@ config PAGE_OFFSET
 	hex
 	default 0xB0000000 if VMSPLIT_3G_OPT
 	default 0x80000000 if VMSPLIT_2G
-	default 0x78000000 if VMSPLIT_2G_OPT
+	default 0x70000000 if VMSPLIT_2G_OPT
 	default 0x40000000 if VMSPLIT_1G
 	default 0xC0000000
 	depends on X86_32
@@ -1578,6 +1582,7 @@ source kernel/Kconfig.hz
 
 config KEXEC
 	bool "kexec system call"
+	depends on !GRKERNSEC_KMEM
 	---help---
 	  kexec is a system call that implements the ability to shutdown your
 	  current kernel, and to start another kernel.  It is like a reboot
@@ -1728,7 +1733,9 @@ config X86_NEED_RELOCS
 
 config PHYSICAL_ALIGN
 	hex "Alignment value to which kernel should be aligned"
-	default "0x200000"
+	default "0x1000000"
+	range 0x200000 0x1000000 if PAX_KERNEXEC && X86_PAE
+	range 0x400000 0x1000000 if PAX_KERNEXEC && !X86_PAE
 	range 0x2000 0x1000000 if X86_32
 	range 0x200000 0x1000000 if X86_64
 	---help---
@@ -1811,6 +1818,7 @@ config COMPAT_VDSO
 	def_bool n
 	prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)"
 	depends on X86_32 || IA32_EMULATION
+	depends on !PAX_PAGEEXEC && !PAX_SEGMEXEC && !PAX_KERNEXEC && !PAX_MEMORY_UDEREF
 	---help---
 	  Certain buggy versions of glibc will crash if they are
 	  presented with a 32-bit vDSO that is not mapped at the address
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
index 6983314..54ad7e8 100644
--- a/arch/x86/Kconfig.cpu
+++ b/arch/x86/Kconfig.cpu
@@ -319,7 +319,7 @@ config X86_PPRO_FENCE
 
 config X86_F00F_BUG
 	def_bool y
-	depends on M586MMX || M586TSC || M586 || M486
+	depends on (M586MMX || M586TSC || M586 || M486) && !PAX_KERNEXEC
 
 config X86_INVD_BUG
 	def_bool y
@@ -327,7 +327,7 @@ config X86_INVD_BUG
 
 config X86_ALIGNMENT_16
 	def_bool y
-	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
+	depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
 
 config X86_INTEL_USERCOPY
 	def_bool y
@@ -369,7 +369,7 @@ config X86_CMPXCHG64
 # generates cmov.
 config X86_CMOV
 	def_bool y
-	depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
+	depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
 
 config X86_MINIMUM_CPU_FAMILY
 	int
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 61bd2ad..50b625d 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -93,7 +93,7 @@ config EFI_PGT_DUMP
 config DEBUG_RODATA
 	bool "Write protect kernel read-only data structures"
 	default y
-	depends on DEBUG_KERNEL
+	depends on DEBUG_KERNEL && BROKEN
 	---help---
 	  Mark the kernel read-only data as write-protected in the pagetables,
 	  in order to catch accidental (and incorrect) writes to such const
@@ -111,7 +111,7 @@ config DEBUG_RODATA_TEST
 
 config DEBUG_SET_MODULE_RONX
 	bool "Set loadable kernel module data as NX and text as RO"
-	depends on MODULES
+	depends on MODULES && BROKEN
 	---help---
 	  This option helps catch unintended modifications to loadable
 	  kernel module's text and read-only data. It also prevents execution
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 33f71b0..c2cefa2 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -71,9 +71,6 @@ ifeq ($(CONFIG_X86_32),y)
         # CPU-specific tuning. Anything which can be shared with UML should go here.
         include $(srctree)/arch/x86/Makefile_32.cpu
         KBUILD_CFLAGS += $(cflags-y)
-
-        # temporary until string.h is fixed
-        KBUILD_CFLAGS += -ffreestanding
 else
         BITS := 64
         UTS_MACHINE := x86_64
@@ -114,6 +111,9 @@ else
         KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args)
 endif
 
+# temporary until string.h is fixed
+KBUILD_CFLAGS += -ffreestanding
+
 # Make sure compiler does not have buggy stack-protector support.
 ifdef CONFIG_CC_STACKPROTECTOR
 	cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
@@ -271,3 +271,12 @@ define archhelp
   echo  '                  FDINITRD=file initrd for the booted kernel'
   echo  '  kvmconfig	- Enable additional options for guest kernel support'
 endef
+
+define OLD_LD
+
+*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils.
+*** Please upgrade your binutils to 2.18 or newer
+endef
+
+archprepare:
+	$(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD)))
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index dbe8dd2..2f0a98f 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -52,6 +52,9 @@ $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
 # ---------------------------------------------------------------------------
 
 KBUILD_CFLAGS	:= $(USERINCLUDE) $(REALMODE_CFLAGS) -D_SETUP
+ifdef CONSTIFY_PLUGIN
+KBUILD_CFLAGS	+= -fplugin-arg-constify_plugin-no-constify
+endif
 KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
 GCOV_PROFILE := n
 
diff --git a/arch/x86/boot/bitops.h b/arch/x86/boot/bitops.h
index 878e4b9..20537ab 100644
--- a/arch/x86/boot/bitops.h
+++ b/arch/x86/boot/bitops.h
@@ -26,7 +26,7 @@ static inline int variable_test_bit(int nr, const void *addr)
 	u8 v;
 	const u32 *p = (const u32 *)addr;
 
-	asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
+	asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
 	return v;
 }
 
@@ -37,7 +37,7 @@ static inline int variable_test_bit(int nr, const void *addr)
 
 static inline void set_bit(int nr, void *addr)
 {
-	asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
+	asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
 }
 
 #endif /* BOOT_BITOPS_H */
diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
index bd49ec6..94c7f58 100644
--- a/arch/x86/boot/boot.h
+++ b/arch/x86/boot/boot.h
@@ -84,7 +84,7 @@ static inline void io_delay(void)
 static inline u16 ds(void)
 {
 	u16 seg;
-	asm("movw %%ds,%0" : "=rm" (seg));
+	asm volatile("movw %%ds,%0" : "=rm" (seg));
 	return seg;
 }
 
diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
index 0fcd913..3bb5c42 100644
--- a/arch/x86/boot/compressed/Makefile
+++ b/arch/x86/boot/compressed/Makefile
@@ -16,6 +16,9 @@ KBUILD_CFLAGS += $(cflags-y)
 KBUILD_CFLAGS += -mno-mmx -mno-sse
 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
+ifdef CONSTIFY_PLUGIN
+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify
+endif
 
 KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
 GCOV_PROFILE := n
diff --git a/arch/x86/boot/compressed/efi_stub_32.S b/arch/x86/boot/compressed/efi_stub_32.S
index a53440e..c3dbf1e 100644
--- a/arch/x86/boot/compressed/efi_stub_32.S
+++ b/arch/x86/boot/compressed/efi_stub_32.S
@@ -46,16 +46,13 @@ ENTRY(efi_call_phys)
 	 * parameter 2, ..., param n. To make things easy, we save the return
 	 * address of efi_call_phys in a global variable.
 	 */
-	popl	%ecx
-	movl	%ecx, saved_return_addr(%edx)
-	/* get the function pointer into ECX*/
-	popl	%ecx
-	movl	%ecx, efi_rt_function_ptr(%edx)
+	popl	saved_return_addr(%edx)
+	popl	efi_rt_function_ptr(%edx)
 
 	/*
 	 * 3. Call the physical function.
 	 */
-	call	*%ecx
+	call	*efi_rt_function_ptr(%edx)
 
 	/*
 	 * 4. Balance the stack. And because EAX contain the return value,
@@ -67,15 +64,12 @@ ENTRY(efi_call_phys)
 1:	popl	%edx
 	subl	$1b, %edx
 
-	movl	efi_rt_function_ptr(%edx), %ecx
-	pushl	%ecx
+	pushl	efi_rt_function_ptr(%edx)
 
 	/*
 	 * 10. Push the saved return address onto the stack and return.
 	 */
-	movl	saved_return_addr(%edx), %ecx
-	pushl	%ecx
-	ret
+	jmpl	*saved_return_addr(%edx)
 ENDPROC(efi_call_phys)
 .previous
 
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
index cbed140..5f2ca57 100644
--- a/arch/x86/boot/compressed/head_32.S
+++ b/arch/x86/boot/compressed/head_32.S
@@ -140,10 +140,10 @@ preferred_addr:
 	addl    %eax, %ebx
 	notl	%eax
 	andl    %eax, %ebx
-	cmpl	$LOAD_PHYSICAL_ADDR, %ebx
+	cmpl	$____LOAD_PHYSICAL_ADDR, %ebx
 	jge	1f
 #endif
-	movl	$LOAD_PHYSICAL_ADDR, %ebx
+	movl	$____LOAD_PHYSICAL_ADDR, %ebx
 1:
 
 	/* Target address to relocate to for decompression */
diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
index 2884e0c..904a2f7 100644
--- a/arch/x86/boot/compressed/head_64.S
+++ b/arch/x86/boot/compressed/head_64.S
@@ -94,10 +94,10 @@ ENTRY(startup_32)
 	addl	%eax, %ebx
 	notl	%eax
 	andl	%eax, %ebx
-	cmpl	$LOAD_PHYSICAL_ADDR, %ebx
+	cmpl	$____LOAD_PHYSICAL_ADDR, %ebx
 	jge	1f
 #endif
-	movl	$LOAD_PHYSICAL_ADDR, %ebx
+	movl	$____LOAD_PHYSICAL_ADDR, %ebx
 1:
 
 	/* Target address to relocate to for decompression */
@@ -322,10 +322,10 @@ preferred_addr:
 	addq	%rax, %rbp
 	notq	%rax
 	andq	%rax, %rbp
-	cmpq	$LOAD_PHYSICAL_ADDR, %rbp
+	cmpq	$____LOAD_PHYSICAL_ADDR, %rbp
 	jge	1f
 #endif
-	movq	$LOAD_PHYSICAL_ADDR, %rbp
+	movq	$____LOAD_PHYSICAL_ADDR, %rbp
 1:
 
 	/* Target address to relocate to for decompression */
@@ -431,8 +431,8 @@ gdt:
 	.long	gdt
 	.word	0
 	.quad	0x0000000000000000	/* NULL descriptor */
-	.quad	0x00af9a000000ffff	/* __KERNEL_CS */
-	.quad	0x00cf92000000ffff	/* __KERNEL_DS */
+	.quad	0x00af9b000000ffff	/* __KERNEL_CS */
+	.quad	0x00cf93000000ffff	/* __KERNEL_DS */
 	.quad	0x0080890000000000	/* TS descriptor */
 	.quad   0x0000000000000000	/* TS continued */
 gdt_end:
diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
index 57ab74d..7c52182 100644
--- a/arch/x86/boot/compressed/misc.c
+++ b/arch/x86/boot/compressed/misc.c
@@ -242,7 +242,7 @@ static void handle_relocations(void *output, unsigned long output_len)
 	 * Calculate the delta between where vmlinux was linked to load
 	 * and where it was actually loaded.
 	 */
-	delta = min_addr - LOAD_PHYSICAL_ADDR;
+	delta = min_addr - ____LOAD_PHYSICAL_ADDR;
 	if (!delta) {
 		debug_putstr("No relocation needed... ");
 		return;
@@ -312,7 +312,7 @@ static void parse_elf(void *output)
 	Elf32_Ehdr ehdr;
 	Elf32_Phdr *phdrs, *phdr;
 #endif
-	void *dest;
+	void *dest, *prev;
 	int i;
 
 	memcpy(&ehdr, output, sizeof(ehdr));
@@ -339,13 +339,16 @@ static void parse_elf(void *output)
 		case PT_LOAD:
 #ifdef CONFIG_RELOCATABLE
 			dest = output;
-			dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR);
+			dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR);
 #else
 			dest = (void *)(phdr->p_paddr);
 #endif
 			memcpy(dest,
 			       output + phdr->p_offset,
 			       phdr->p_filesz);
+			if (i)
+				memset(prev, 0xff, dest - prev);
+			prev = dest + phdr->p_filesz;
 			break;
 		default: /* Ignore other PT_* */ break;
 		}
@@ -395,7 +398,7 @@ asmlinkage __visible void *decompress_kernel(void *rmode, memptr heap,
 		error("Destination address too large");
 #endif
 #ifndef CONFIG_RELOCATABLE
-	if ((unsigned long)output != LOAD_PHYSICAL_ADDR)
+	if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR)
 		error("Wrong destination address");
 #endif
 
diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c
index 1fd7d57..0f7d096 100644
--- a/arch/x86/boot/cpucheck.c
+++ b/arch/x86/boot/cpucheck.c
@@ -125,9 +125,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
 		u32 ecx = MSR_K7_HWCR;
 		u32 eax, edx;
 
-		asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
+		asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
 		eax &= ~(1 << 15);
-		asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
+		asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
 
 		get_cpuflags();	/* Make sure it really did something */
 		err = check_cpuflags();
@@ -140,9 +140,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
 		u32 ecx = MSR_VIA_FCR;
 		u32 eax, edx;
 
-		asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
+		asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
 		eax |= (1<<1)|(1<<7);
-		asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
+		asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
 
 		set_bit(X86_FEATURE_CX8, cpu.flags);
 		err = check_cpuflags();
@@ -153,12 +153,12 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
 		u32 eax, edx;
 		u32 level = 1;
 
-		asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
-		asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
-		asm("cpuid"
+		asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
+		asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
+		asm volatile("cpuid"
 		    : "+a" (level), "=d" (cpu.flags[0])
 		    : : "ecx", "ebx");
-		asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
+		asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
 
 		err = check_cpuflags();
 	} else if (err == 0x01 &&
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 7a6d43a..edf6e40 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -438,10 +438,14 @@ setup_data:		.quad 0			# 64-bit physical pointer to
 						# single linked list of
 						# struct setup_data
 
-pref_address:		.quad LOAD_PHYSICAL_ADDR	# preferred load addr
+pref_address:		.quad ____LOAD_PHYSICAL_ADDR	# preferred load addr
 
 #define ZO_INIT_SIZE	(ZO__end - ZO_startup_32 + ZO_z_extract_offset)
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+#define VO_INIT_SIZE	(VO__end - VO__text - __PAGE_OFFSET - ____LOAD_PHYSICAL_ADDR)
+#else
 #define VO_INIT_SIZE	(VO__end - VO__text)
+#endif
 #if ZO_INIT_SIZE > VO_INIT_SIZE
 #define INIT_SIZE ZO_INIT_SIZE
 #else
diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
index db75d07..8e6d0af 100644
--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -19,7 +19,7 @@
 
 static int detect_memory_e820(void)
 {
-	int count = 0;
+	unsigned int count = 0;
 	struct biosregs ireg, oreg;
 	struct e820entry *desc = boot_params.e820_map;
 	static struct e820entry buf; /* static so it is zeroed */
diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c
index ba3e100..6501b8f 100644
--- a/arch/x86/boot/video-vesa.c
+++ b/arch/x86/boot/video-vesa.c
@@ -201,6 +201,7 @@ static void vesa_store_pm_info(void)
 
 	boot_params.screen_info.vesapm_seg = oreg.es;
 	boot_params.screen_info.vesapm_off = oreg.di;
+	boot_params.screen_info.vesapm_size = oreg.cx;
 }
 
 /*
diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c
index 43eda28..5ab5fdb 100644
--- a/arch/x86/boot/video.c
+++ b/arch/x86/boot/video.c
@@ -96,7 +96,7 @@ static void store_mode_params(void)
 static unsigned int get_entry(void)
 {
 	char entry_buf[4];
-	int i, len = 0;
+	unsigned int i, len = 0;
 	int key;
 	unsigned int v;
 
diff --git a/arch/x86/crypto/aes-x86_64-asm_64.S b/arch/x86/crypto/aes-x86_64-asm_64.S
index 9105655..41779c1 100644
--- a/arch/x86/crypto/aes-x86_64-asm_64.S
+++ b/arch/x86/crypto/aes-x86_64-asm_64.S
@@ -8,6 +8,8 @@
  * including this sentence is retained in full.
  */
 
+#include <asm/alternative-asm.h>
+
 .extern crypto_ft_tab
 .extern crypto_it_tab
 .extern crypto_fl_tab
@@ -70,6 +72,8 @@
 	je	B192;			\
 	leaq	32(r9),r9;
 
+#define ret	pax_force_retaddr; ret
+
 #define epilogue(FUNC,r1,r2,r3,r4,r5,r6,r7,r8,r9) \
 	movq	r1,r2;			\
 	movq	r3,r4;			\
diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
index 477e9d7..c92c7d8 100644
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -31,6 +31,7 @@
 
 #include <linux/linkage.h>
 #include <asm/inst.h>
+#include <asm/alternative-asm.h>
 
 #ifdef __x86_64__
 .data
@@ -205,7 +206,7 @@ enc:        .octa 0x2
 * num_initial_blocks = b mod 4
 * encrypt the initial num_initial_blocks blocks and apply ghash on
 * the ciphertext
-* %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
+* %r10, %r11, %r15, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
 * are clobbered
 * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified
 */
@@ -214,8 +215,8 @@ enc:        .octa 0x2
 .macro INITIAL_BLOCKS_DEC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
 	mov	   arg7, %r10           # %r10 = AAD
-	mov	   arg8, %r12           # %r12 = aadLen
-	mov	   %r12, %r11
+	mov	   arg8, %r15           # %r15 = aadLen
+	mov	   %r15, %r11
 	pxor	   %xmm\i, %xmm\i
 _get_AAD_loop\num_initial_blocks\operation:
 	movd	   (%r10), \TMP1
@@ -223,15 +224,15 @@ _get_AAD_loop\num_initial_blocks\operation:
 	psrldq	   $4, %xmm\i
 	pxor	   \TMP1, %xmm\i
 	add	   $4, %r10
-	sub	   $4, %r12
+	sub	   $4, %r15
 	jne	   _get_AAD_loop\num_initial_blocks\operation
 	cmp	   $16, %r11
 	je	   _get_AAD_loop2_done\num_initial_blocks\operation
-	mov	   $16, %r12
+	mov	   $16, %r15
 _get_AAD_loop2\num_initial_blocks\operation:
 	psrldq	   $4, %xmm\i
-	sub	   $4, %r12
-	cmp	   %r11, %r12
+	sub	   $4, %r15
+	cmp	   %r11, %r15
 	jne	   _get_AAD_loop2\num_initial_blocks\operation
 _get_AAD_loop2_done\num_initial_blocks\operation:
         movdqa     SHUF_MASK(%rip), %xmm14
@@ -443,7 +444,7 @@ _initial_blocks_done\num_initial_blocks\operation:
 * num_initial_blocks = b mod 4
 * encrypt the initial num_initial_blocks blocks and apply ghash on
 * the ciphertext
-* %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
+* %r10, %r11, %r15, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
 * are clobbered
 * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified
 */
@@ -452,8 +453,8 @@ _initial_blocks_done\num_initial_blocks\operation:
 .macro INITIAL_BLOCKS_ENC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
 	mov	   arg7, %r10           # %r10 = AAD
-	mov	   arg8, %r12           # %r12 = aadLen
-	mov	   %r12, %r11
+	mov	   arg8, %r15           # %r15 = aadLen
+	mov	   %r15, %r11
 	pxor	   %xmm\i, %xmm\i
 _get_AAD_loop\num_initial_blocks\operation:
 	movd	   (%r10), \TMP1
@@ -461,15 +462,15 @@ _get_AAD_loop\num_initial_blocks\operation:
 	psrldq	   $4, %xmm\i
 	pxor	   \TMP1, %xmm\i
 	add	   $4, %r10
-	sub	   $4, %r12
+	sub	   $4, %r15
 	jne	   _get_AAD_loop\num_initial_blocks\operation
 	cmp	   $16, %r11
 	je	   _get_AAD_loop2_done\num_initial_blocks\operation
-	mov	   $16, %r12
+	mov	   $16, %r15
 _get_AAD_loop2\num_initial_blocks\operation:
 	psrldq	   $4, %xmm\i
-	sub	   $4, %r12
-	cmp	   %r11, %r12
+	sub	   $4, %r15
+	cmp	   %r11, %r15
 	jne	   _get_AAD_loop2\num_initial_blocks\operation
 _get_AAD_loop2_done\num_initial_blocks\operation:
         movdqa     SHUF_MASK(%rip), %xmm14
@@ -1269,7 +1270,7 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
 *
 *****************************************************************************/
 ENTRY(aesni_gcm_dec)
-	push	%r12
+	push	%r15
 	push	%r13
 	push	%r14
 	mov	%rsp, %r14
@@ -1279,8 +1280,8 @@ ENTRY(aesni_gcm_dec)
 */
 	sub	$VARIABLE_OFFSET, %rsp
 	and	$~63, %rsp                        # align rsp to 64 bytes
-	mov	%arg6, %r12
-	movdqu	(%r12), %xmm13			  # %xmm13 = HashKey
+	mov	%arg6, %r15
+	movdqu	(%r15), %xmm13			  # %xmm13 = HashKey
         movdqa  SHUF_MASK(%rip), %xmm2
 	PSHUFB_XMM %xmm2, %xmm13
 
@@ -1308,10 +1309,10 @@ ENTRY(aesni_gcm_dec)
 	movdqa %xmm13, HashKey(%rsp)           # store HashKey<<1 (mod poly)
 	mov %arg4, %r13    # save the number of bytes of plaintext/ciphertext
 	and $-16, %r13                      # %r13 = %r13 - (%r13 mod 16)
-	mov %r13, %r12
-	and $(3<<4), %r12
+	mov %r13, %r15
+	and $(3<<4), %r15
 	jz _initial_num_blocks_is_0_decrypt
-	cmp $(2<<4), %r12
+	cmp $(2<<4), %r15
 	jb _initial_num_blocks_is_1_decrypt
 	je _initial_num_blocks_is_2_decrypt
 _initial_num_blocks_is_3_decrypt:
@@ -1361,16 +1362,16 @@ _zero_cipher_left_decrypt:
 	sub $16, %r11
 	add %r13, %r11
 	movdqu (%arg3,%r11,1), %xmm1   # receive the last <16 byte block
-	lea SHIFT_MASK+16(%rip), %r12
-	sub %r13, %r12
+	lea SHIFT_MASK+16(%rip), %r15
+	sub %r13, %r15
 # adjust the shuffle mask pointer to be able to shift 16-%r13 bytes
 # (%r13 is the number of bytes in plaintext mod 16)
-	movdqu (%r12), %xmm2           # get the appropriate shuffle mask
+	movdqu (%r15), %xmm2           # get the appropriate shuffle mask
 	PSHUFB_XMM %xmm2, %xmm1            # right shift 16-%r13 butes
 
 	movdqa  %xmm1, %xmm2
 	pxor %xmm1, %xmm0            # Ciphertext XOR E(K, Yn)
-	movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
+	movdqu ALL_F-SHIFT_MASK(%r15), %xmm1
 	# get the appropriate mask to mask out top 16-%r13 bytes of %xmm0
 	pand %xmm1, %xmm0            # mask out top 16-%r13 bytes of %xmm0
 	pand    %xmm1, %xmm2
@@ -1399,9 +1400,9 @@ _less_than_8_bytes_left_decrypt:
 	sub	$1, %r13
 	jne	_less_than_8_bytes_left_decrypt
 _multiple_of_16_bytes_decrypt:
-	mov	arg8, %r12		  # %r13 = aadLen (number of bytes)
-	shl	$3, %r12		  # convert into number of bits
-	movd	%r12d, %xmm15		  # len(A) in %xmm15
+	mov	arg8, %r15		  # %r13 = aadLen (number of bytes)
+	shl	$3, %r15		  # convert into number of bits
+	movd	%r15d, %xmm15		  # len(A) in %xmm15
 	shl	$3, %arg4		  # len(C) in bits (*128)
 	MOVQ_R64_XMM	%arg4, %xmm1
 	pslldq	$8, %xmm15		  # %xmm15 = len(A)||0x0000000000000000
@@ -1440,7 +1441,8 @@ _return_T_done_decrypt:
 	mov	%r14, %rsp
 	pop	%r14
 	pop	%r13
-	pop	%r12
+	pop	%r15
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_gcm_dec)
 
@@ -1529,7 +1531,7 @@ ENDPROC(aesni_gcm_dec)
 * poly = x^128 + x^127 + x^126 + x^121 + 1
 ***************************************************************************/
 ENTRY(aesni_gcm_enc)
-	push	%r12
+	push	%r15
 	push	%r13
 	push	%r14
 	mov	%rsp, %r14
@@ -1539,8 +1541,8 @@ ENTRY(aesni_gcm_enc)
 #
 	sub	$VARIABLE_OFFSET, %rsp
 	and	$~63, %rsp
-	mov	%arg6, %r12
-	movdqu	(%r12), %xmm13
+	mov	%arg6, %r15
+	movdqu	(%r15), %xmm13
         movdqa  SHUF_MASK(%rip), %xmm2
 	PSHUFB_XMM %xmm2, %xmm13
 
@@ -1564,13 +1566,13 @@ ENTRY(aesni_gcm_enc)
 	movdqa	%xmm13, HashKey(%rsp)
 	mov	%arg4, %r13            # %xmm13 holds HashKey<<1 (mod poly)
 	and	$-16, %r13
-	mov	%r13, %r12
+	mov	%r13, %r15
 
         # Encrypt first few blocks
 
-	and	$(3<<4), %r12
+	and	$(3<<4), %r15
 	jz	_initial_num_blocks_is_0_encrypt
-	cmp	$(2<<4), %r12
+	cmp	$(2<<4), %r15
 	jb	_initial_num_blocks_is_1_encrypt
 	je	_initial_num_blocks_is_2_encrypt
 _initial_num_blocks_is_3_encrypt:
@@ -1623,14 +1625,14 @@ _zero_cipher_left_encrypt:
 	sub $16, %r11
 	add %r13, %r11
 	movdqu (%arg3,%r11,1), %xmm1     # receive the last <16 byte blocks
-	lea SHIFT_MASK+16(%rip), %r12
-	sub %r13, %r12
+	lea SHIFT_MASK+16(%rip), %r15
+	sub %r13, %r15
 	# adjust the shuffle mask pointer to be able to shift 16-r13 bytes
 	# (%r13 is the number of bytes in plaintext mod 16)
-	movdqu	(%r12), %xmm2           # get the appropriate shuffle mask
+	movdqu	(%r15), %xmm2           # get the appropriate shuffle mask
 	PSHUFB_XMM	%xmm2, %xmm1            # shift right 16-r13 byte
 	pxor	%xmm1, %xmm0            # Plaintext XOR Encrypt(K, Yn)
-	movdqu	ALL_F-SHIFT_MASK(%r12), %xmm1
+	movdqu	ALL_F-SHIFT_MASK(%r15), %xmm1
 	# get the appropriate mask to mask out top 16-r13 bytes of xmm0
 	pand	%xmm1, %xmm0            # mask out top 16-r13 bytes of xmm0
         movdqa SHUF_MASK(%rip), %xmm10
@@ -1663,9 +1665,9 @@ _less_than_8_bytes_left_encrypt:
 	sub $1, %r13
 	jne _less_than_8_bytes_left_encrypt
 _multiple_of_16_bytes_encrypt:
-	mov	arg8, %r12    # %r12 = addLen (number of bytes)
-	shl	$3, %r12
-	movd	%r12d, %xmm15       # len(A) in %xmm15
+	mov	arg8, %r15    # %r15 = addLen (number of bytes)
+	shl	$3, %r15
+	movd	%r15d, %xmm15       # len(A) in %xmm15
 	shl	$3, %arg4               # len(C) in bits (*128)
 	MOVQ_R64_XMM	%arg4, %xmm1
 	pslldq	$8, %xmm15          # %xmm15 = len(A)||0x0000000000000000
@@ -1704,7 +1706,8 @@ _return_T_done_encrypt:
 	mov	%r14, %rsp
 	pop	%r14
 	pop	%r13
-	pop	%r12
+	pop	%r15
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_gcm_enc)
 
@@ -1722,6 +1725,7 @@ _key_expansion_256a:
 	pxor %xmm1, %xmm0
 	movaps %xmm0, (TKEYP)
 	add $0x10, TKEYP
+	pax_force_retaddr
 	ret
 ENDPROC(_key_expansion_128)
 ENDPROC(_key_expansion_256a)
@@ -1748,6 +1752,7 @@ _key_expansion_192a:
 	shufps $0b01001110, %xmm2, %xmm1
 	movaps %xmm1, 0x10(TKEYP)
 	add $0x20, TKEYP
+	pax_force_retaddr
 	ret
 ENDPROC(_key_expansion_192a)
 
@@ -1768,6 +1773,7 @@ _key_expansion_192b:
 
 	movaps %xmm0, (TKEYP)
 	add $0x10, TKEYP
+	pax_force_retaddr
 	ret
 ENDPROC(_key_expansion_192b)
 
@@ -1781,6 +1787,7 @@ _key_expansion_256b:
 	pxor %xmm1, %xmm2
 	movaps %xmm2, (TKEYP)
 	add $0x10, TKEYP
+	pax_force_retaddr
 	ret
 ENDPROC(_key_expansion_256b)
 
@@ -1894,6 +1901,7 @@ ENTRY(aesni_set_key)
 #ifndef __x86_64__
 	popl KEYP
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_set_key)
 
@@ -1916,6 +1924,7 @@ ENTRY(aesni_enc)
 	popl KLEN
 	popl KEYP
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_enc)
 
@@ -1974,6 +1983,7 @@ _aesni_enc1:
 	AESENC KEY STATE
 	movaps 0x70(TKEYP), KEY
 	AESENCLAST KEY STATE
+	pax_force_retaddr
 	ret
 ENDPROC(_aesni_enc1)
 
@@ -2083,6 +2093,7 @@ _aesni_enc4:
 	AESENCLAST KEY STATE2
 	AESENCLAST KEY STATE3
 	AESENCLAST KEY STATE4
+	pax_force_retaddr
 	ret
 ENDPROC(_aesni_enc4)
 
@@ -2106,6 +2117,7 @@ ENTRY(aesni_dec)
 	popl KLEN
 	popl KEYP
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_dec)
 
@@ -2164,6 +2176,7 @@ _aesni_dec1:
 	AESDEC KEY STATE
 	movaps 0x70(TKEYP), KEY
 	AESDECLAST KEY STATE
+	pax_force_retaddr
 	ret
 ENDPROC(_aesni_dec1)
 
@@ -2273,6 +2286,7 @@ _aesni_dec4:
 	AESDECLAST KEY STATE2
 	AESDECLAST KEY STATE3
 	AESDECLAST KEY STATE4
+	pax_force_retaddr
 	ret
 ENDPROC(_aesni_dec4)
 
@@ -2331,6 +2345,7 @@ ENTRY(aesni_ecb_enc)
 	popl KEYP
 	popl LEN
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_ecb_enc)
 
@@ -2390,6 +2405,7 @@ ENTRY(aesni_ecb_dec)
 	popl KEYP
 	popl LEN
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_ecb_dec)
 
@@ -2432,6 +2448,7 @@ ENTRY(aesni_cbc_enc)
 	popl LEN
 	popl IVP
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_cbc_enc)
 
@@ -2523,6 +2540,7 @@ ENTRY(aesni_cbc_dec)
 	popl LEN
 	popl IVP
 #endif
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_cbc_dec)
 
@@ -2550,6 +2568,7 @@ _aesni_inc_init:
 	mov $1, TCTR_LOW
 	MOVQ_R64_XMM TCTR_LOW INC
 	MOVQ_R64_XMM CTR TCTR_LOW
+	pax_force_retaddr
 	ret
 ENDPROC(_aesni_inc_init)
 
@@ -2579,6 +2598,7 @@ _aesni_inc:
 .Linc_low:
 	movaps CTR, IV
 	PSHUFB_XMM BSWAP_MASK IV
+	pax_force_retaddr
 	ret
 ENDPROC(_aesni_inc)
 
@@ -2640,6 +2660,7 @@ ENTRY(aesni_ctr_enc)
 .Lctr_enc_ret:
 	movups IV, (IVP)
 .Lctr_enc_just_ret:
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_ctr_enc)
 
@@ -2766,6 +2787,7 @@ ENTRY(aesni_xts_crypt8)
 	pxor INC, STATE4
 	movdqu STATE4, 0x70(OUTP)
 
+	pax_force_retaddr
 	ret
 ENDPROC(aesni_xts_crypt8)
 
diff --git a/arch/x86/crypto/blowfish-x86_64-asm_64.S b/arch/x86/crypto/blowfish-x86_64-asm_64.S
index 246c670..466e2d6 100644
--- a/arch/x86/crypto/blowfish-x86_64-asm_64.S
+++ b/arch/x86/crypto/blowfish-x86_64-asm_64.S
@@ -21,6 +21,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .file "blowfish-x86_64-asm.S"
 .text
@@ -149,9 +150,11 @@ ENTRY(__blowfish_enc_blk)
 	jnz .L__enc_xor;
 
 	write_block();
+	pax_force_retaddr
 	ret;
 .L__enc_xor:
 	xor_block();
+	pax_force_retaddr
 	ret;
 ENDPROC(__blowfish_enc_blk)
 
@@ -183,6 +186,7 @@ ENTRY(blowfish_dec_blk)
 
 	movq %r11, %rbp;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(blowfish_dec_blk)
 
@@ -334,6 +338,7 @@ ENTRY(__blowfish_enc_blk_4way)
 
 	popq %rbx;
 	popq %rbp;
+	pax_force_retaddr
 	ret;
 
 .L__enc_xor4:
@@ -341,6 +346,7 @@ ENTRY(__blowfish_enc_blk_4way)
 
 	popq %rbx;
 	popq %rbp;
+	pax_force_retaddr
 	ret;
 ENDPROC(__blowfish_enc_blk_4way)
 
@@ -375,5 +381,6 @@ ENTRY(blowfish_dec_blk_4way)
 	popq %rbx;
 	popq %rbp;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(blowfish_dec_blk_4way)
diff --git a/arch/x86/crypto/camellia-aesni-avx-asm_64.S b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
index ce71f92..1dce7ec 100644
--- a/arch/x86/crypto/camellia-aesni-avx-asm_64.S
+++ b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
@@ -16,6 +16,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 #define CAMELLIA_TABLE_BYTE_LEN 272
 
@@ -191,6 +192,7 @@ roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd:
 	roundsm16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
 		  %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, %xmm15,
 		  %rcx, (%r9));
+	pax_force_retaddr
 	ret;
 ENDPROC(roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd)
 
@@ -199,6 +201,7 @@ roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab:
 	roundsm16(%xmm4, %xmm5, %xmm6, %xmm7, %xmm0, %xmm1, %xmm2, %xmm3,
 		  %xmm12, %xmm13, %xmm14, %xmm15, %xmm8, %xmm9, %xmm10, %xmm11,
 		  %rax, (%r9));
+	pax_force_retaddr
 	ret;
 ENDPROC(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
 
@@ -780,6 +783,7 @@ __camellia_enc_blk16:
 		    %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
 		    %xmm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 16(%rax));
 
+	pax_force_retaddr
 	ret;
 
 .align 8
@@ -865,6 +869,7 @@ __camellia_dec_blk16:
 		    %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
 		    %xmm15, (key_table)(CTX), (%rax), 1 * 16(%rax));
 
+	pax_force_retaddr
 	ret;
 
 .align 8
@@ -904,6 +909,7 @@ ENTRY(camellia_ecb_enc_16way)
 		     %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
 		     %xmm8, %rsi);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_ecb_enc_16way)
 
@@ -932,6 +938,7 @@ ENTRY(camellia_ecb_dec_16way)
 		     %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
 		     %xmm8, %rsi);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_ecb_dec_16way)
 
@@ -981,6 +988,7 @@ ENTRY(camellia_cbc_dec_16way)
 		     %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
 		     %xmm8, %rsi);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_cbc_dec_16way)
 
@@ -1092,6 +1100,7 @@ ENTRY(camellia_ctr_16way)
 		     %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
 		     %xmm8, %rsi);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_ctr_16way)
 
@@ -1234,6 +1243,7 @@ camellia_xts_crypt_16way:
 		     %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
 		     %xmm8, %rsi);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_xts_crypt_16way)
 
diff --git a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
index 0e0b886..5a3123c 100644
--- a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
+++ b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
@@ -11,6 +11,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 #define CAMELLIA_TABLE_BYTE_LEN 272
 
@@ -230,6 +231,7 @@ roundsm32_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd:
 	roundsm32(%ymm0, %ymm1, %ymm2, %ymm3, %ymm4, %ymm5, %ymm6, %ymm7,
 		  %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15,
 		  %rcx, (%r9));
+	pax_force_retaddr
 	ret;
 ENDPROC(roundsm32_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd)
 
@@ -238,6 +240,7 @@ roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab:
 	roundsm32(%ymm4, %ymm5, %ymm6, %ymm7, %ymm0, %ymm1, %ymm2, %ymm3,
 		  %ymm12, %ymm13, %ymm14, %ymm15, %ymm8, %ymm9, %ymm10, %ymm11,
 		  %rax, (%r9));
+	pax_force_retaddr
 	ret;
 ENDPROC(roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
 
@@ -820,6 +823,7 @@ __camellia_enc_blk32:
 		    %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14,
 		    %ymm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 32(%rax));
 
+	pax_force_retaddr
 	ret;
 
 .align 8
@@ -905,6 +909,7 @@ __camellia_dec_blk32:
 		    %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14,
 		    %ymm15, (key_table)(CTX), (%rax), 1 * 32(%rax));
 
+	pax_force_retaddr
 	ret;
 
 .align 8
@@ -948,6 +953,7 @@ ENTRY(camellia_ecb_enc_32way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_ecb_enc_32way)
 
@@ -980,6 +986,7 @@ ENTRY(camellia_ecb_dec_32way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_ecb_dec_32way)
 
@@ -1046,6 +1053,7 @@ ENTRY(camellia_cbc_dec_32way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_cbc_dec_32way)
 
@@ -1184,6 +1192,7 @@ ENTRY(camellia_ctr_32way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_ctr_32way)
 
@@ -1349,6 +1358,7 @@ camellia_xts_crypt_32way:
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_xts_crypt_32way)
 
diff --git a/arch/x86/crypto/camellia-x86_64-asm_64.S b/arch/x86/crypto/camellia-x86_64-asm_64.S
index 310319c..db3d7b5 100644
--- a/arch/x86/crypto/camellia-x86_64-asm_64.S
+++ b/arch/x86/crypto/camellia-x86_64-asm_64.S
@@ -21,6 +21,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .file "camellia-x86_64-asm_64.S"
 .text
@@ -228,12 +229,14 @@ ENTRY(__camellia_enc_blk)
 	enc_outunpack(mov, RT1);
 
 	movq RRBP, %rbp;
+	pax_force_retaddr
 	ret;
 
 .L__enc_xor:
 	enc_outunpack(xor, RT1);
 
 	movq RRBP, %rbp;
+	pax_force_retaddr
 	ret;
 ENDPROC(__camellia_enc_blk)
 
@@ -272,6 +275,7 @@ ENTRY(camellia_dec_blk)
 	dec_outunpack();
 
 	movq RRBP, %rbp;
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_dec_blk)
 
@@ -463,6 +467,7 @@ ENTRY(__camellia_enc_blk_2way)
 
 	movq RRBP, %rbp;
 	popq %rbx;
+	pax_force_retaddr
 	ret;
 
 .L__enc2_xor:
@@ -470,6 +475,7 @@ ENTRY(__camellia_enc_blk_2way)
 
 	movq RRBP, %rbp;
 	popq %rbx;
+	pax_force_retaddr
 	ret;
 ENDPROC(__camellia_enc_blk_2way)
 
@@ -510,5 +516,6 @@ ENTRY(camellia_dec_blk_2way)
 
 	movq RRBP, %rbp;
 	movq RXOR, %rbx;
+	pax_force_retaddr
 	ret;
 ENDPROC(camellia_dec_blk_2way)
diff --git a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S
index c35fd5d..2d8c7db 100644
--- a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S
@@ -24,6 +24,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .file "cast5-avx-x86_64-asm_64.S"
 
@@ -281,6 +282,7 @@ __cast5_enc_blk16:
 	outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
 	outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__cast5_enc_blk16)
 
@@ -352,6 +354,7 @@ __cast5_dec_blk16:
 	outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
 	outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
 
+	pax_force_retaddr
 	ret;
 
 .L__skip_dec:
@@ -388,6 +391,7 @@ ENTRY(cast5_ecb_enc_16way)
 	vmovdqu RR4, (6*4*4)(%r11);
 	vmovdqu RL4, (7*4*4)(%r11);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast5_ecb_enc_16way)
 
@@ -420,6 +424,7 @@ ENTRY(cast5_ecb_dec_16way)
 	vmovdqu RR4, (6*4*4)(%r11);
 	vmovdqu RL4, (7*4*4)(%r11);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast5_ecb_dec_16way)
 
@@ -430,10 +435,10 @@ ENTRY(cast5_cbc_dec_16way)
 	 *	%rdx: src
 	 */
 
-	pushq %r12;
+	pushq %r14;
 
 	movq %rsi, %r11;
-	movq %rdx, %r12;
+	movq %rdx, %r14;
 
 	vmovdqu (0*16)(%rdx), RL1;
 	vmovdqu (1*16)(%rdx), RR1;
@@ -447,16 +452,16 @@ ENTRY(cast5_cbc_dec_16way)
 	call __cast5_dec_blk16;
 
 	/* xor with src */
-	vmovq (%r12), RX;
+	vmovq (%r14), RX;
 	vpshufd $0x4f, RX, RX;
 	vpxor RX, RR1, RR1;
-	vpxor 0*16+8(%r12), RL1, RL1;
-	vpxor 1*16+8(%r12), RR2, RR2;
-	vpxor 2*16+8(%r12), RL2, RL2;
-	vpxor 3*16+8(%r12), RR3, RR3;
-	vpxor 4*16+8(%r12), RL3, RL3;
-	vpxor 5*16+8(%r12), RR4, RR4;
-	vpxor 6*16+8(%r12), RL4, RL4;
+	vpxor 0*16+8(%r14), RL1, RL1;
+	vpxor 1*16+8(%r14), RR2, RR2;
+	vpxor 2*16+8(%r14), RL2, RL2;
+	vpxor 3*16+8(%r14), RR3, RR3;
+	vpxor 4*16+8(%r14), RL3, RL3;
+	vpxor 5*16+8(%r14), RR4, RR4;
+	vpxor 6*16+8(%r14), RL4, RL4;
 
 	vmovdqu RR1, (0*16)(%r11);
 	vmovdqu RL1, (1*16)(%r11);
@@ -467,8 +472,9 @@ ENTRY(cast5_cbc_dec_16way)
 	vmovdqu RR4, (6*16)(%r11);
 	vmovdqu RL4, (7*16)(%r11);
 
-	popq %r12;
+	popq %r14;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast5_cbc_dec_16way)
 
@@ -480,10 +486,10 @@ ENTRY(cast5_ctr_16way)
 	 *	%rcx: iv (big endian, 64bit)
 	 */
 
-	pushq %r12;
+	pushq %r14;
 
 	movq %rsi, %r11;
-	movq %rdx, %r12;
+	movq %rdx, %r14;
 
 	vpcmpeqd RTMP, RTMP, RTMP;
 	vpsrldq $8, RTMP, RTMP; /* low: -1, high: 0 */
@@ -523,14 +529,14 @@ ENTRY(cast5_ctr_16way)
 	call __cast5_enc_blk16;
 
 	/* dst = src ^ iv */
-	vpxor (0*16)(%r12), RR1, RR1;
-	vpxor (1*16)(%r12), RL1, RL1;
-	vpxor (2*16)(%r12), RR2, RR2;
-	vpxor (3*16)(%r12), RL2, RL2;
-	vpxor (4*16)(%r12), RR3, RR3;
-	vpxor (5*16)(%r12), RL3, RL3;
-	vpxor (6*16)(%r12), RR4, RR4;
-	vpxor (7*16)(%r12), RL4, RL4;
+	vpxor (0*16)(%r14), RR1, RR1;
+	vpxor (1*16)(%r14), RL1, RL1;
+	vpxor (2*16)(%r14), RR2, RR2;
+	vpxor (3*16)(%r14), RL2, RL2;
+	vpxor (4*16)(%r14), RR3, RR3;
+	vpxor (5*16)(%r14), RL3, RL3;
+	vpxor (6*16)(%r14), RR4, RR4;
+	vpxor (7*16)(%r14), RL4, RL4;
 	vmovdqu RR1, (0*16)(%r11);
 	vmovdqu RL1, (1*16)(%r11);
 	vmovdqu RR2, (2*16)(%r11);
@@ -540,7 +546,8 @@ ENTRY(cast5_ctr_16way)
 	vmovdqu RR4, (6*16)(%r11);
 	vmovdqu RL4, (7*16)(%r11);
 
-	popq %r12;
+	popq %r14;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast5_ctr_16way)
diff --git a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
index e3531f8..e123f35 100644
--- a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
@@ -24,6 +24,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 #include "glue_helper-asm-avx.S"
 
 .file "cast6-avx-x86_64-asm_64.S"
@@ -295,6 +296,7 @@ __cast6_enc_blk8:
 	outunpack_blocks(RA1, RB1, RC1, RD1, RTMP, RX, RKRF, RKM);
 	outunpack_blocks(RA2, RB2, RC2, RD2, RTMP, RX, RKRF, RKM);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__cast6_enc_blk8)
 
@@ -340,6 +342,7 @@ __cast6_dec_blk8:
 	outunpack_blocks(RA1, RB1, RC1, RD1, RTMP, RX, RKRF, RKM);
 	outunpack_blocks(RA2, RB2, RC2, RD2, RTMP, RX, RKRF, RKM);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__cast6_dec_blk8)
 
@@ -358,6 +361,7 @@ ENTRY(cast6_ecb_enc_8way)
 
 	store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast6_ecb_enc_8way)
 
@@ -376,6 +380,7 @@ ENTRY(cast6_ecb_dec_8way)
 
 	store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast6_ecb_dec_8way)
 
@@ -386,19 +391,20 @@ ENTRY(cast6_cbc_dec_8way)
 	 *	%rdx: src
 	 */
 
-	pushq %r12;
+	pushq %r14;
 
 	movq %rsi, %r11;
-	movq %rdx, %r12;
+	movq %rdx, %r14;
 
 	load_8way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
 	call __cast6_dec_blk8;
 
-	store_cbc_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
+	store_cbc_8way(%r14, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
-	popq %r12;
+	popq %r14;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast6_cbc_dec_8way)
 
@@ -410,20 +416,21 @@ ENTRY(cast6_ctr_8way)
 	 *	%rcx: iv (little endian, 128bit)
 	 */
 
-	pushq %r12;
+	pushq %r14;
 
 	movq %rsi, %r11;
-	movq %rdx, %r12;
+	movq %rdx, %r14;
 
 	load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
 		      RD2, RX, RKR, RKM);
 
 	call __cast6_enc_blk8;
 
-	store_ctr_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
+	store_ctr_8way(%r14, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
-	popq %r12;
+	popq %r14;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast6_ctr_8way)
 
@@ -446,6 +453,7 @@ ENTRY(cast6_xts_enc_8way)
 	/* dst <= regs xor IVs(in dst) */
 	store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast6_xts_enc_8way)
 
@@ -468,5 +476,6 @@ ENTRY(cast6_xts_dec_8way)
 	/* dst <= regs xor IVs(in dst) */
 	store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(cast6_xts_dec_8way)
diff --git a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
index dbc4339..de6e120 100644
--- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
+++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
@@ -45,6 +45,7 @@
 
 #include <asm/inst.h>
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 ## ISCSI CRC 32 Implementation with crc32 and pclmulqdq Instruction
 
@@ -312,6 +313,7 @@ do_return:
 	popq    %rsi
 	popq    %rdi
 	popq    %rbx
+	pax_force_retaddr
         ret
 
         ################################################################
diff --git a/arch/x86/crypto/ghash-clmulni-intel_asm.S b/arch/x86/crypto/ghash-clmulni-intel_asm.S
index 5d1e007..098cb4f 100644
--- a/arch/x86/crypto/ghash-clmulni-intel_asm.S
+++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S
@@ -18,6 +18,7 @@
 
 #include <linux/linkage.h>
 #include <asm/inst.h>
+#include <asm/alternative-asm.h>
 
 .data
 
@@ -89,6 +90,7 @@ __clmul_gf128mul_ble:
 	psrlq $1, T2
 	pxor T2, T1
 	pxor T1, DATA
+	pax_force_retaddr
 	ret
 ENDPROC(__clmul_gf128mul_ble)
 
@@ -101,6 +103,7 @@ ENTRY(clmul_ghash_mul)
 	call __clmul_gf128mul_ble
 	PSHUFB_XMM BSWAP DATA
 	movups DATA, (%rdi)
+	pax_force_retaddr
 	ret
 ENDPROC(clmul_ghash_mul)
 
@@ -128,5 +131,6 @@ ENTRY(clmul_ghash_update)
 	PSHUFB_XMM BSWAP DATA
 	movups DATA, (%rdi)
 .Lupdate_just_ret:
+	pax_force_retaddr
 	ret
 ENDPROC(clmul_ghash_update)
diff --git a/arch/x86/crypto/salsa20-x86_64-asm_64.S b/arch/x86/crypto/salsa20-x86_64-asm_64.S
index 9279e0b..c4b3d2c 100644
--- a/arch/x86/crypto/salsa20-x86_64-asm_64.S
+++ b/arch/x86/crypto/salsa20-x86_64-asm_64.S
@@ -1,4 +1,5 @@
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 # enter salsa20_encrypt_bytes
 ENTRY(salsa20_encrypt_bytes)
@@ -789,6 +790,7 @@ ENTRY(salsa20_encrypt_bytes)
 	add	%r11,%rsp
 	mov	%rdi,%rax
 	mov	%rsi,%rdx
+	pax_force_retaddr
 	ret
 #   bytesatleast65:
 ._bytesatleast65:
@@ -889,6 +891,7 @@ ENTRY(salsa20_keysetup)
 	add	%r11,%rsp
 	mov	%rdi,%rax
 	mov	%rsi,%rdx
+	pax_force_retaddr
 	ret
 ENDPROC(salsa20_keysetup)
 
@@ -914,5 +917,6 @@ ENTRY(salsa20_ivsetup)
 	add	%r11,%rsp
 	mov	%rdi,%rax
 	mov	%rsi,%rdx
+	pax_force_retaddr
 	ret
 ENDPROC(salsa20_ivsetup)
diff --git a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
index 2f202f4..d9164d6 100644
--- a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
@@ -24,6 +24,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 #include "glue_helper-asm-avx.S"
 
 .file "serpent-avx-x86_64-asm_64.S"
@@ -618,6 +619,7 @@ __serpent_enc_blk8_avx:
 	write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2);
 	write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__serpent_enc_blk8_avx)
 
@@ -672,6 +674,7 @@ __serpent_dec_blk8_avx:
 	write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2);
 	write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__serpent_dec_blk8_avx)
 
@@ -688,6 +691,7 @@ ENTRY(serpent_ecb_enc_8way_avx)
 
 	store_8way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_ecb_enc_8way_avx)
 
@@ -704,6 +708,7 @@ ENTRY(serpent_ecb_dec_8way_avx)
 
 	store_8way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_ecb_dec_8way_avx)
 
@@ -720,6 +725,7 @@ ENTRY(serpent_cbc_dec_8way_avx)
 
 	store_cbc_8way(%rdx, %rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_cbc_dec_8way_avx)
 
@@ -738,6 +744,7 @@ ENTRY(serpent_ctr_8way_avx)
 
 	store_ctr_8way(%rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_ctr_8way_avx)
 
@@ -758,6 +765,7 @@ ENTRY(serpent_xts_enc_8way_avx)
 	/* dst <= regs xor IVs(in dst) */
 	store_xts_8way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_xts_enc_8way_avx)
 
@@ -778,5 +786,6 @@ ENTRY(serpent_xts_dec_8way_avx)
 	/* dst <= regs xor IVs(in dst) */
 	store_xts_8way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_xts_dec_8way_avx)
diff --git a/arch/x86/crypto/serpent-avx2-asm_64.S b/arch/x86/crypto/serpent-avx2-asm_64.S
index b222085..abd483c 100644
--- a/arch/x86/crypto/serpent-avx2-asm_64.S
+++ b/arch/x86/crypto/serpent-avx2-asm_64.S
@@ -15,6 +15,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 #include "glue_helper-asm-avx2.S"
 
 .file "serpent-avx2-asm_64.S"
@@ -610,6 +611,7 @@ __serpent_enc_blk16:
 	write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2);
 	write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__serpent_enc_blk16)
 
@@ -664,6 +666,7 @@ __serpent_dec_blk16:
 	write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2);
 	write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__serpent_dec_blk16)
 
@@ -684,6 +687,7 @@ ENTRY(serpent_ecb_enc_16way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_ecb_enc_16way)
 
@@ -704,6 +708,7 @@ ENTRY(serpent_ecb_dec_16way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_ecb_dec_16way)
 
@@ -725,6 +730,7 @@ ENTRY(serpent_cbc_dec_16way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_cbc_dec_16way)
 
@@ -748,6 +754,7 @@ ENTRY(serpent_ctr_16way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_ctr_16way)
 
@@ -772,6 +779,7 @@ ENTRY(serpent_xts_enc_16way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_xts_enc_16way)
 
@@ -796,5 +804,6 @@ ENTRY(serpent_xts_dec_16way)
 
 	vzeroupper;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_xts_dec_16way)
diff --git a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
index acc066c..1559cc4 100644
--- a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
+++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
@@ -25,6 +25,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .file "serpent-sse2-x86_64-asm_64.S"
 .text
@@ -690,12 +691,14 @@ ENTRY(__serpent_enc_blk_8way)
 	write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2);
 	write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 
 .L__enc_xor8:
 	xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2);
 	xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__serpent_enc_blk_8way)
 
@@ -750,5 +753,6 @@ ENTRY(serpent_dec_blk_8way)
 	write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2);
 	write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(serpent_dec_blk_8way)
diff --git a/arch/x86/crypto/sha1_ssse3_asm.S b/arch/x86/crypto/sha1_ssse3_asm.S
index a410950..9dfe7ad 100644
--- a/arch/x86/crypto/sha1_ssse3_asm.S
+++ b/arch/x86/crypto/sha1_ssse3_asm.S
@@ -29,6 +29,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 #define CTX	%rdi	// arg1
 #define BUF	%rsi	// arg2
@@ -75,9 +76,9 @@
 
 	push	%rbx
 	push	%rbp
-	push	%r12
+	push	%r14
 
-	mov	%rsp, %r12
+	mov	%rsp, %r14
 	sub	$64, %rsp		# allocate workspace
 	and	$~15, %rsp		# align stack
 
@@ -99,11 +100,12 @@
 	xor	%rax, %rax
 	rep stosq
 
-	mov	%r12, %rsp		# deallocate workspace
+	mov	%r14, %rsp		# deallocate workspace
 
-	pop	%r12
+	pop	%r14
 	pop	%rbp
 	pop	%rbx
+	pax_force_retaddr
 	ret
 
 	ENDPROC(\name)
diff --git a/arch/x86/crypto/sha256-avx-asm.S b/arch/x86/crypto/sha256-avx-asm.S
index 642f156..51a513c 100644
--- a/arch/x86/crypto/sha256-avx-asm.S
+++ b/arch/x86/crypto/sha256-avx-asm.S
@@ -49,6 +49,7 @@
 
 #ifdef CONFIG_AS_AVX
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 ## assume buffers not aligned
 #define    VMOVDQ vmovdqu
@@ -460,6 +461,7 @@ done_hash:
 	popq    %r13
 	popq    %rbp
 	popq    %rbx
+	pax_force_retaddr
 	ret
 ENDPROC(sha256_transform_avx)
 
diff --git a/arch/x86/crypto/sha256-avx2-asm.S b/arch/x86/crypto/sha256-avx2-asm.S
index 9e86944..3795e6a 100644
--- a/arch/x86/crypto/sha256-avx2-asm.S
+++ b/arch/x86/crypto/sha256-avx2-asm.S
@@ -50,6 +50,7 @@
 
 #ifdef CONFIG_AS_AVX2
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 ## assume buffers not aligned
 #define	VMOVDQ vmovdqu
@@ -720,6 +721,7 @@ done_hash:
 	popq	%r12
 	popq	%rbp
 	popq	%rbx
+	pax_force_retaddr
 	ret
 ENDPROC(sha256_transform_rorx)
 
diff --git a/arch/x86/crypto/sha256-ssse3-asm.S b/arch/x86/crypto/sha256-ssse3-asm.S
index f833b74..8c62a9e 100644
--- a/arch/x86/crypto/sha256-ssse3-asm.S
+++ b/arch/x86/crypto/sha256-ssse3-asm.S
@@ -47,6 +47,7 @@
 ########################################################################
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 ## assume buffers not aligned
 #define    MOVDQ movdqu
@@ -471,6 +472,7 @@ done_hash:
 	popq    %rbp
 	popq    %rbx
 
+	pax_force_retaddr
 	ret
 ENDPROC(sha256_transform_ssse3)
 
diff --git a/arch/x86/crypto/sha512-avx-asm.S b/arch/x86/crypto/sha512-avx-asm.S
index 974dde9..a823ff9 100644
--- a/arch/x86/crypto/sha512-avx-asm.S
+++ b/arch/x86/crypto/sha512-avx-asm.S
@@ -49,6 +49,7 @@
 
 #ifdef CONFIG_AS_AVX
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .text
 
@@ -364,6 +365,7 @@ updateblock:
 	mov	frame_RSPSAVE(%rsp), %rsp
 
 nowork:
+	pax_force_retaddr
 	ret
 ENDPROC(sha512_transform_avx)
 
diff --git a/arch/x86/crypto/sha512-avx2-asm.S b/arch/x86/crypto/sha512-avx2-asm.S
index 568b961..ed20c37 100644
--- a/arch/x86/crypto/sha512-avx2-asm.S
+++ b/arch/x86/crypto/sha512-avx2-asm.S
@@ -51,6 +51,7 @@
 
 #ifdef CONFIG_AS_AVX2
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .text
 
@@ -678,6 +679,7 @@ done_hash:
 
 	# Restore Stack Pointer
 	mov	frame_RSPSAVE(%rsp), %rsp
+	pax_force_retaddr
 	ret
 ENDPROC(sha512_transform_rorx)
 
diff --git a/arch/x86/crypto/sha512-ssse3-asm.S b/arch/x86/crypto/sha512-ssse3-asm.S
index fb56855..6edd768 100644
--- a/arch/x86/crypto/sha512-ssse3-asm.S
+++ b/arch/x86/crypto/sha512-ssse3-asm.S
@@ -48,6 +48,7 @@
 ########################################################################
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .text
 
@@ -363,6 +364,7 @@ updateblock:
 	mov	frame_RSPSAVE(%rsp), %rsp
 
 nowork:
+	pax_force_retaddr
 	ret
 ENDPROC(sha512_transform_ssse3)
 
diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
index 0505813..b067311 100644
--- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
+++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
@@ -24,6 +24,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 #include "glue_helper-asm-avx.S"
 
 .file "twofish-avx-x86_64-asm_64.S"
@@ -284,6 +285,7 @@ __twofish_enc_blk8:
 	outunpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2);
 	outunpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__twofish_enc_blk8)
 
@@ -324,6 +326,7 @@ __twofish_dec_blk8:
 	outunpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2);
 	outunpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(__twofish_dec_blk8)
 
@@ -342,6 +345,7 @@ ENTRY(twofish_ecb_enc_8way)
 
 	store_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_ecb_enc_8way)
 
@@ -360,6 +364,7 @@ ENTRY(twofish_ecb_dec_8way)
 
 	store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_ecb_dec_8way)
 
@@ -370,19 +375,20 @@ ENTRY(twofish_cbc_dec_8way)
 	 *	%rdx: src
 	 */
 
-	pushq %r12;
+	pushq %r14;
 
 	movq %rsi, %r11;
-	movq %rdx, %r12;
+	movq %rdx, %r14;
 
 	load_8way(%rdx, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
 
 	call __twofish_dec_blk8;
 
-	store_cbc_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
+	store_cbc_8way(%r14, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
-	popq %r12;
+	popq %r14;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_cbc_dec_8way)
 
@@ -394,20 +400,21 @@ ENTRY(twofish_ctr_8way)
 	 *	%rcx: iv (little endian, 128bit)
 	 */
 
-	pushq %r12;
+	pushq %r14;
 
 	movq %rsi, %r11;
-	movq %rdx, %r12;
+	movq %rdx, %r14;
 
 	load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
 		      RD2, RX0, RX1, RY0);
 
 	call __twofish_enc_blk8;
 
-	store_ctr_8way(%r12, %r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
+	store_ctr_8way(%r14, %r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
 
-	popq %r12;
+	popq %r14;
 
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_ctr_8way)
 
@@ -430,6 +437,7 @@ ENTRY(twofish_xts_enc_8way)
 	/* dst <= regs xor IVs(in dst) */
 	store_xts_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_xts_enc_8way)
 
@@ -452,5 +460,6 @@ ENTRY(twofish_xts_dec_8way)
 	/* dst <= regs xor IVs(in dst) */
 	store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
 
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_xts_dec_8way)
diff --git a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
index 1c3b7ce..02f578d 100644
--- a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
+++ b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
@@ -21,6 +21,7 @@
  */
 
 #include <linux/linkage.h>
+#include <asm/alternative-asm.h>
 
 .file "twofish-x86_64-asm-3way.S"
 .text
@@ -258,6 +259,7 @@ ENTRY(__twofish_enc_blk_3way)
 	popq %r13;
 	popq %r14;
 	popq %r15;
+	pax_force_retaddr
 	ret;
 
 .L__enc_xor3:
@@ -269,6 +271,7 @@ ENTRY(__twofish_enc_blk_3way)
 	popq %r13;
 	popq %r14;
 	popq %r15;
+	pax_force_retaddr
 	ret;
 ENDPROC(__twofish_enc_blk_3way)
 
@@ -308,5 +311,6 @@ ENTRY(twofish_dec_blk_3way)
 	popq %r13;
 	popq %r14;
 	popq %r15;
+	pax_force_retaddr
 	ret;
 ENDPROC(twofish_dec_blk_3way)
diff --git a/arch/x86/crypto/twofish-x86_64-asm_64.S b/arch/x86/crypto/twofish-x86_64-asm_64.S
index a039d21..524b8b2 100644
--- a/arch/x86/crypto/twofish-x86_64-asm_64.S
+++ b/arch/x86/crypto/twofish-x86_64-asm_64.S
@@ -22,6 +22,7 @@
 
 #include <linux/linkage.h>
 #include <asm/asm-offsets.h>
+#include <asm/alternative-asm.h>
 
 #define a_offset	0
 #define b_offset	4
@@ -265,6 +266,7 @@ ENTRY(twofish_enc_blk)
 
 	popq	R1
 	movq	$1,%rax
+	pax_force_retaddr
 	ret
 ENDPROC(twofish_enc_blk)
 
@@ -317,5 +319,6 @@ ENTRY(twofish_dec_blk)
 
 	popq	R1
 	movq	$1,%rax
+	pax_force_retaddr
 	ret
 ENDPROC(twofish_dec_blk)
diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index d21ff89..6da8e6e 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -153,6 +153,8 @@ static int aout_core_dump(struct coredump_params *cprm)
 	unsigned long dump_start, dump_size;
 	struct user32 dump;
 
+	memset(&dump, 0, sizeof(dump));
+
 	fs = get_fs();
 	set_fs(KERNEL_DS);
 	has_dumped = 1;
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
index f9e181a..b0df8b3 100644
--- a/arch/x86/ia32/ia32_signal.c
+++ b/arch/x86/ia32/ia32_signal.c
@@ -218,7 +218,7 @@ asmlinkage long sys32_sigreturn(void)
 	if (__get_user(set.sig[0], &frame->sc.oldmask)
 	    || (_COMPAT_NSIG_WORDS > 1
 		&& __copy_from_user((((char *) &set.sig) + 4),
-				    &frame->extramask,
+				    frame->extramask,
 				    sizeof(frame->extramask))))
 		goto badframe;
 
@@ -338,7 +338,7 @@ static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
 	sp -= frame_size;
 	/* Align the stack pointer according to the i386 ABI,
 	 * i.e. so that on function entry ((sp + 4) & 15) == 0. */
-	sp = ((sp + 4) & -16ul) - 4;
+	sp = ((sp - 12) & -16ul) - 4;
 	return (void __user *) sp;
 }
 
@@ -386,7 +386,7 @@ int ia32_setup_frame(int sig, struct ksignal *ksig,
 			restorer = current->mm->context.vdso +
 				selected_vdso32->sym___kernel_sigreturn;
 		else
-			restorer = &frame->retcode;
+			restorer = frame->retcode;
 	}
 
 	put_user_try {
@@ -396,7 +396,7 @@ int ia32_setup_frame(int sig, struct ksignal *ksig,
 		 * These are actually not used anymore, but left because some
 		 * gdb versions depend on them as a marker.
 		 */
-		put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
+		put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode);
 	} put_user_catch(err);
 
 	if (err)
@@ -438,7 +438,7 @@ int ia32_setup_rt_frame(int sig, struct ksignal *ksig,
 		0xb8,
 		__NR_ia32_rt_sigreturn,
 		0x80cd,
-		0,
+		0
 	};
 
 	frame = get_sigframe(ksig, regs, sizeof(*frame), &fpstate);
@@ -461,16 +461,19 @@ int ia32_setup_rt_frame(int sig, struct ksignal *ksig,
 
 		if (ksig->ka.sa.sa_flags & SA_RESTORER)
 			restorer = ksig->ka.sa.sa_restorer;
-		else
+		else if (current->mm->context.vdso)
+			/* Return stub is in 32bit vsyscall page */
 			restorer = current->mm->context.vdso +
 				selected_vdso32->sym___kernel_rt_sigreturn;
+		else
+			restorer = frame->retcode;
 		put_user_ex(ptr_to_compat(restorer), &frame->pretcode);
 
 		/*
 		 * Not actually used anymore, but left because some gdb
 		 * versions need it.
 		 */
-		put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
+		put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode);
 	} put_user_catch(err);
 
 	err |= copy_siginfo_to_user32(&frame->info, &ksig->info);
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 4299eb0..fefe70e 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -15,8 +15,10 @@
 #include <asm/irqflags.h>
 #include <asm/asm.h>
 #include <asm/smap.h>
+#include <asm/pgtable.h>
 #include <linux/linkage.h>
 #include <linux/err.h>
+#include <asm/alternative-asm.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -62,12 +64,12 @@
 	 */
 	.macro LOAD_ARGS32 offset, _r9=0
 	.if \_r9
-	movl \offset+16(%rsp),%r9d
+	movl \offset+R9(%rsp),%r9d
 	.endif
-	movl \offset+40(%rsp),%ecx
-	movl \offset+48(%rsp),%edx
-	movl \offset+56(%rsp),%esi
-	movl \offset+64(%rsp),%edi
+	movl \offset+RCX(%rsp),%ecx
+	movl \offset+RDX(%rsp),%edx
+	movl \offset+RSI(%rsp),%esi
+	movl \offset+RDI(%rsp),%edi
 	movl %eax,%eax			/* zero extension */
 	.endm
 	
@@ -96,6 +98,32 @@ ENTRY(native_irq_enable_sysexit)
 ENDPROC(native_irq_enable_sysexit)
 #endif
 
+	.macro pax_enter_kernel_user
+	pax_set_fptr_mask
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_enter_kernel_user
+#endif
+	.endm
+
+	.macro pax_exit_kernel_user
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_exit_kernel_user
+#endif
+#ifdef CONFIG_PAX_RANDKSTACK
+	pushq %rax
+	pushq %r11
+	call pax_randomize_kstack
+	popq %r11
+	popq %rax
+#endif
+	.endm
+
+	.macro pax_erase_kstack
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+	call pax_erase_kstack
+#endif
+	.endm
+
 /*
  * 32bit SYSENTER instruction entry.
  *
@@ -122,12 +150,6 @@ ENTRY(ia32_sysenter_target)
 	CFI_REGISTER	rsp,rbp
 	SWAPGS_UNSAFE_STACK
 	movq	PER_CPU_VAR(kernel_stack), %rsp
-	addq	$(KERNEL_STACK_OFFSET),%rsp
-	/*
-	 * No need to follow this irqs on/off section: the syscall
-	 * disabled irqs, here we enable it straight after entry:
-	 */
-	ENABLE_INTERRUPTS(CLBR_NONE)
  	movl	%ebp,%ebp		/* zero extension */
 	pushq_cfi $__USER32_DS
 	/*CFI_REL_OFFSET ss,0*/
@@ -135,24 +157,49 @@ ENTRY(ia32_sysenter_target)
 	CFI_REL_OFFSET rsp,0
 	pushfq_cfi
 	/*CFI_REL_OFFSET rflags,0*/
-	movl	TI_sysenter_return+THREAD_INFO(%rsp,3*8-KERNEL_STACK_OFFSET),%r10d
-	CFI_REGISTER rip,r10
+	orl	$X86_EFLAGS_IF,(%rsp)
+	GET_THREAD_INFO(%r11)
+	movl	TI_sysenter_return(%r11), %r11d
+	CFI_REGISTER rip,r11
 	pushq_cfi $__USER32_CS
 	/*CFI_REL_OFFSET cs,0*/
 	movl	%eax, %eax
-	pushq_cfi %r10
+	pushq_cfi %r11
 	CFI_REL_OFFSET rip,0
 	pushq_cfi %rax
 	cld
 	SAVE_ARGS 0,1,0
+	pax_enter_kernel_user
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pax_erase_kstack
+#endif
+
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs, here we enable it straight after entry:
+	 */
+	ENABLE_INTERRUPTS(CLBR_NONE)
  	/* no need to do an access_ok check here because rbp has been
  	   32bit zero extended */ 
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	addq	pax_user_shadow_base,%rbp
+	ASM_PAX_OPEN_USERLAND
+#endif
+
 	ASM_STAC
 1:	movl	(%rbp),%ebp
 	_ASM_EXTABLE(1b,ia32_badarg)
 	ASM_CLAC
-	orl     $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
-	testl   $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	ASM_PAX_CLOSE_USERLAND
+#endif
+
+	GET_THREAD_INFO(%r11)
+	orl    $TS_COMPAT,TI_status(%r11)
+	testl  $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
 	CFI_REMEMBER_STATE
 	jnz  sysenter_tracesys
 	cmpq	$(IA32_NR_syscalls-1),%rax
@@ -162,15 +209,18 @@ sysenter_do_call:
 sysenter_dispatch:
 	call	*ia32_sys_call_table(,%rax,8)
 	movq	%rax,RAX-ARGOFFSET(%rsp)
+	GET_THREAD_INFO(%r11)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	testl	$_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl	$_TIF_ALLWORK_MASK,TI_flags(%r11)
 	jnz	sysexit_audit
 sysexit_from_sys_call:
-	andl    $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	pax_exit_kernel_user
+	pax_erase_kstack
+	andl    $~TS_COMPAT,TI_status(%r11)
 	/* clear IF, that popfq doesn't enable interrupts early */
-	andl  $~0x200,EFLAGS-R11(%rsp) 
-	movl	RIP-R11(%rsp),%edx		/* User %eip */
+	andl  $~X86_EFLAGS_IF,EFLAGS(%rsp)
+	movl	RIP(%rsp),%edx		/* User %eip */
 	CFI_REGISTER rip,rdx
 	RESTORE_ARGS 0,24,0,0,0,0
 	xorq	%r8,%r8
@@ -193,6 +243,9 @@ sysexit_from_sys_call:
 	movl %eax,%esi			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_I386,%edi	/* 1st arg: audit arch */
 	call __audit_syscall_entry
+
+	pax_erase_kstack
+
 	movl RAX-ARGOFFSET(%rsp),%eax	/* reload syscall number */
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja ia32_badsys
@@ -204,7 +257,7 @@ sysexit_from_sys_call:
 	.endm
 
 	.macro auditsys_exit exit
-	testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
 	jnz ia32_ret_from_sys_call
 	TRACE_IRQS_ON
 	ENABLE_INTERRUPTS(CLBR_NONE)
@@ -215,11 +268,12 @@ sysexit_from_sys_call:
 1:	setbe %al		/* 1 if error, 0 if not */
 	movzbl %al,%edi		/* zero-extend that into %edi */
 	call __audit_syscall_exit
+	GET_THREAD_INFO(%r11)
 	movq RAX-ARGOFFSET(%rsp),%rax	/* reload syscall return value */
 	movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl %edi,TI_flags(%r11)
 	jz \exit
 	CLEAR_RREGS -ARGOFFSET
 	jmp int_with_check
@@ -237,7 +291,7 @@ sysexit_audit:
 
 sysenter_tracesys:
 #ifdef CONFIG_AUDITSYSCALL
-	testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl	$(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
 	jz	sysenter_auditsys
 #endif
 	SAVE_REST
@@ -249,6 +303,9 @@ sysenter_tracesys:
 	RESTORE_REST
 	cmpq	$(IA32_NR_syscalls-1),%rax
 	ja	int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */
+
+	pax_erase_kstack
+
 	jmp	sysenter_do_call
 	CFI_ENDPROC
 ENDPROC(ia32_sysenter_target)
@@ -276,19 +333,25 @@ ENDPROC(ia32_sysenter_target)
 ENTRY(ia32_cstar_target)
 	CFI_STARTPROC32	simple
 	CFI_SIGNAL_FRAME
-	CFI_DEF_CFA	rsp,KERNEL_STACK_OFFSET
+	CFI_DEF_CFA	rsp,0
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	SWAPGS_UNSAFE_STACK
 	movl	%esp,%r8d
 	CFI_REGISTER	rsp,r8
 	movq	PER_CPU_VAR(kernel_stack),%rsp
+	SAVE_ARGS 8*6,0,0
+	pax_enter_kernel_user
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pax_erase_kstack
+#endif
+
 	/*
 	 * No need to follow this irqs on/off section: the syscall
 	 * disabled irqs and here we enable it straight after entry:
 	 */
 	ENABLE_INTERRUPTS(CLBR_NONE)
-	SAVE_ARGS 8,0,0
 	movl 	%eax,%eax	/* zero extension */
 	movq	%rax,ORIG_RAX-ARGOFFSET(%rsp)
 	movq	%rcx,RIP-ARGOFFSET(%rsp)
@@ -304,12 +367,25 @@ ENTRY(ia32_cstar_target)
 	/* no need to do an access_ok check here because r8 has been
 	   32bit zero extended */ 
 	/* hardware stack frame is complete now */	
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	ASM_PAX_OPEN_USERLAND
+	movq	pax_user_shadow_base,%r8
+	addq	RSP-ARGOFFSET(%rsp),%r8
+#endif
+
 	ASM_STAC
 1:	movl	(%r8),%r9d
 	_ASM_EXTABLE(1b,ia32_badarg)
 	ASM_CLAC
-	orl     $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
-	testl   $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	ASM_PAX_CLOSE_USERLAND
+#endif
+
+	GET_THREAD_INFO(%r11)
+	orl   $TS_COMPAT,TI_status(%r11)
+	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
 	CFI_REMEMBER_STATE
 	jnz   cstar_tracesys
 	cmpq $IA32_NR_syscalls-1,%rax
@@ -319,13 +395,16 @@ cstar_do_call:
 cstar_dispatch:
 	call *ia32_sys_call_table(,%rax,8)
 	movq %rax,RAX-ARGOFFSET(%rsp)
+	GET_THREAD_INFO(%r11)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl $_TIF_ALLWORK_MASK,TI_flags(%r11)
 	jnz sysretl_audit
 sysretl_from_sys_call:
-	andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
-	RESTORE_ARGS 0,-ARG_SKIP,0,0,0
+	pax_exit_kernel_user
+	pax_erase_kstack
+	andl $~TS_COMPAT,TI_status(%r11)
+	RESTORE_ARGS 0,-ORIG_RAX,0,0,0
 	movl RIP-ARGOFFSET(%rsp),%ecx
 	CFI_REGISTER rip,rcx
 	movl EFLAGS-ARGOFFSET(%rsp),%r11d	
@@ -352,7 +431,7 @@ sysretl_audit:
 
 cstar_tracesys:
 #ifdef CONFIG_AUDITSYSCALL
-	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
 	jz cstar_auditsys
 #endif
 	xchgl %r9d,%ebp
@@ -366,11 +445,19 @@ cstar_tracesys:
 	xchgl %ebp,%r9d
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */
+
+	pax_erase_kstack
+
 	jmp cstar_do_call
 END(ia32_cstar_target)
 				
 ia32_badarg:
 	ASM_CLAC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	ASM_PAX_CLOSE_USERLAND
+#endif
+
 	movq $-EFAULT,%rax
 	jmp ia32_sysret
 	CFI_ENDPROC
@@ -407,19 +494,26 @@ ENTRY(ia32_syscall)
 	CFI_REL_OFFSET	rip,RIP-RIP
 	PARAVIRT_ADJUST_EXCEPTION_FRAME
 	SWAPGS
-	/*
-	 * No need to follow this irqs on/off section: the syscall
-	 * disabled irqs and here we enable it straight after entry:
-	 */
-	ENABLE_INTERRUPTS(CLBR_NONE)
 	movl %eax,%eax
 	pushq_cfi %rax
 	cld
 	/* note the registers are not zero extended to the sf.
 	   this could be a problem. */
 	SAVE_ARGS 0,1,0
-	orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
-	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	pax_enter_kernel_user
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pax_erase_kstack
+#endif
+
+	/*
+	 * No need to follow this irqs on/off section: the syscall
+	 * disabled irqs and here we enable it straight after entry:
+	 */
+	ENABLE_INTERRUPTS(CLBR_NONE)
+	GET_THREAD_INFO(%r11)
+	orl   $TS_COMPAT,TI_status(%r11)
+	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
 	jnz ia32_tracesys
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja ia32_badsys
@@ -442,6 +536,9 @@ ia32_tracesys:
 	RESTORE_REST
 	cmpq $(IA32_NR_syscalls-1),%rax
 	ja  int_ret_from_sys_call	/* ia32_tracesys has set RAX(%rsp) */
+
+	pax_erase_kstack
+
 	jmp ia32_do_call
 END(ia32_syscall)
 
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index 8e0ceec..af13504 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -69,8 +69,8 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low,
  */
 static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat)
 {
-	typeof(ubuf->st_uid) uid = 0;
-	typeof(ubuf->st_gid) gid = 0;
+	typeof(((struct stat64 *)0)->st_uid) uid = 0;
+	typeof(((struct stat64 *)0)->st_gid) gid = 0;
 	SET_UID(uid, from_kuid_munged(current_user_ns(), stat->uid));
 	SET_GID(gid, from_kgid_munged(current_user_ns(), stat->gid));
 	if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
index 372231c..51b537d 100644
--- a/arch/x86/include/asm/alternative-asm.h
+++ b/arch/x86/include/asm/alternative-asm.h
@@ -18,6 +18,45 @@
 	.endm
 #endif
 
+#ifdef KERNEXEC_PLUGIN
+	.macro pax_force_retaddr_bts rip=0
+	btsq $63,\rip(%rsp)
+	.endm
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS
+	.macro pax_force_retaddr rip=0, reload=0
+	btsq $63,\rip(%rsp)
+	.endm
+	.macro pax_force_fptr ptr
+	btsq $63,\ptr
+	.endm
+	.macro pax_set_fptr_mask
+	.endm
+#endif
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	.macro pax_force_retaddr rip=0, reload=0
+	.if \reload
+	pax_set_fptr_mask
+	.endif
+	orq %r12,\rip(%rsp)
+	.endm
+	.macro pax_force_fptr ptr
+	orq %r12,\ptr
+	.endm
+	.macro pax_set_fptr_mask
+	movabs $0x8000000000000000,%r12
+	.endm
+#endif
+#else
+	.macro pax_force_retaddr rip=0, reload=0
+	.endm
+	.macro pax_force_fptr ptr
+	.endm
+	.macro pax_force_retaddr_bts rip=0
+	.endm
+	.macro pax_set_fptr_mask
+	.endm
+#endif
+
 .macro altinstruction_entry orig alt feature orig_len alt_len
 	.long \orig - .
 	.long \alt - .
diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
index 0a3f9c9..c9d081d 100644
--- a/arch/x86/include/asm/alternative.h
+++ b/arch/x86/include/asm/alternative.h
@@ -106,7 +106,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
 	".pushsection .discard,\"aw\",@progbits\n"			\
 	DISCARD_ENTRY(1)						\
 	".popsection\n"							\
-	".pushsection .altinstr_replacement, \"ax\"\n"			\
+	".pushsection .altinstr_replacement, \"a\"\n"			\
 	ALTINSTR_REPLACEMENT(newinstr, feature, 1)			\
 	".popsection"
 
@@ -120,7 +120,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
 	DISCARD_ENTRY(1)						\
 	DISCARD_ENTRY(2)						\
 	".popsection\n"							\
-	".pushsection .altinstr_replacement, \"ax\"\n"			\
+	".pushsection .altinstr_replacement, \"a\"\n"			\
 	ALTINSTR_REPLACEMENT(newinstr1, feature1, 1)			\
 	ALTINSTR_REPLACEMENT(newinstr2, feature2, 2)			\
 	".popsection"
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 19b0eba..12254cd 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -45,7 +45,7 @@ static inline void generic_apic_probe(void)
 
 #ifdef CONFIG_X86_LOCAL_APIC
 
-extern unsigned int apic_verbosity;
+extern int apic_verbosity;
 extern int local_apic_timer_c2_ok;
 
 extern int disable_apic;
diff --git a/arch/x86/include/asm/apm.h b/arch/x86/include/asm/apm.h
index 20370c6..a2eb9b0 100644
--- a/arch/x86/include/asm/apm.h
+++ b/arch/x86/include/asm/apm.h
@@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in,
 	__asm__ __volatile__(APM_DO_ZERO_SEGS
 		"pushl %%edi\n\t"
 		"pushl %%ebp\n\t"
-		"lcall *%%cs:apm_bios_entry\n\t"
+		"lcall *%%ss:apm_bios_entry\n\t"
 		"setc %%al\n\t"
 		"popl %%ebp\n\t"
 		"popl %%edi\n\t"
@@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_asm(u32 func, u32 ebx_in,
 	__asm__ __volatile__(APM_DO_ZERO_SEGS
 		"pushl %%edi\n\t"
 		"pushl %%ebp\n\t"
-		"lcall *%%cs:apm_bios_entry\n\t"
+		"lcall *%%ss:apm_bios_entry\n\t"
 		"setc %%bl\n\t"
 		"popl %%ebp\n\t"
 		"popl %%edi\n\t"
diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h
index 6dd1c7dd..2edd216 100644
--- a/arch/x86/include/asm/atomic.h
+++ b/arch/x86/include/asm/atomic.h
@@ -24,7 +24,18 @@
  */
 static inline int atomic_read(const atomic_t *v)
 {
-	return (*(volatile int *)&(v)->counter);
+	return (*(volatile const int *)&(v)->counter);
+}
+
+/**
+ * atomic_read_unchecked - read atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically reads the value of @v.
+ */
+static inline int __intentional_overflow(-1) atomic_read_unchecked(const atomic_unchecked_t *v)
+{
+	return (*(volatile const int *)&(v)->counter);
 }
 
 /**
@@ -40,6 +51,18 @@ static inline void atomic_set(atomic_t *v, int i)
 }
 
 /**
+ * atomic_set_unchecked - set atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.
+ */
+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
+{
+	v->counter = i;
+}
+
+/**
  * atomic_add - add integer to atomic variable
  * @i: integer value to add
  * @v: pointer of type atomic_t
@@ -48,7 +71,29 @@ static inline void atomic_set(atomic_t *v, int i)
  */
 static inline void atomic_add(int i, atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "addl %1,%0"
+	asm volatile(LOCK_PREFIX "addl %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "subl %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter)
+		     : "ir" (i));
+}
+
+/**
+ * atomic_add_unchecked - add integer to atomic variable
+ * @i: integer value to add
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "addl %1,%0\n"
 		     : "+m" (v->counter)
 		     : "ir" (i));
 }
@@ -62,7 +107,29 @@ static inline void atomic_add(int i, atomic_t *v)
  */
 static inline void atomic_sub(int i, atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "subl %1,%0"
+	asm volatile(LOCK_PREFIX "subl %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "addl %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter)
+		     : "ir" (i));
+}
+
+/**
+ * atomic_sub_unchecked - subtract integer from atomic variable
+ * @i: integer value to subtract
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "subl %1,%0\n"
 		     : "+m" (v->counter)
 		     : "ir" (i));
 }
@@ -78,7 +145,7 @@ static inline void atomic_sub(int i, atomic_t *v)
  */
 static inline int atomic_sub_and_test(int i, atomic_t *v)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "subl", v->counter, "er", i, "%0", "e");
+	GEN_BINARY_RMWcc(LOCK_PREFIX "subl", LOCK_PREFIX "addl",  v->counter, "er", i, "%0", "e");
 }
 
 /**
@@ -89,7 +156,27 @@ static inline int atomic_sub_and_test(int i, atomic_t *v)
  */
 static inline void atomic_inc(atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "incl %0"
+	asm volatile(LOCK_PREFIX "incl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "decl %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter));
+}
+
+/**
+ * atomic_inc_unchecked - increment atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically increments @v by 1.
+ */
+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "incl %0\n"
 		     : "+m" (v->counter));
 }
 
@@ -101,7 +188,27 @@ static inline void atomic_inc(atomic_t *v)
  */
 static inline void atomic_dec(atomic_t *v)
 {
-	asm volatile(LOCK_PREFIX "decl %0"
+	asm volatile(LOCK_PREFIX "decl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "incl %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (v->counter));
+}
+
+/**
+ * atomic_dec_unchecked - decrement atomic variable
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically decrements @v by 1.
+ */
+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "decl %0\n"
 		     : "+m" (v->counter));
 }
 
@@ -115,7 +222,7 @@ static inline void atomic_dec(atomic_t *v)
  */
 static inline int atomic_dec_and_test(atomic_t *v)
 {
-	GEN_UNARY_RMWcc(LOCK_PREFIX "decl", v->counter, "%0", "e");
+	GEN_UNARY_RMWcc(LOCK_PREFIX "decl", LOCK_PREFIX "incl", v->counter, "%0", "e");
 }
 
 /**
@@ -128,7 +235,20 @@ static inline int atomic_dec_and_test(atomic_t *v)
  */
 static inline int atomic_inc_and_test(atomic_t *v)
 {
-	GEN_UNARY_RMWcc(LOCK_PREFIX "incl", v->counter, "%0", "e");
+	GEN_UNARY_RMWcc(LOCK_PREFIX "incl", LOCK_PREFIX "decl", v->counter, "%0", "e");
+}
+
+/**
+ * atomic_inc_and_test_unchecked - increment and test
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically increments @v by 1
+ * and returns true if the result is zero, or false for all
+ * other cases.
+ */
+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
+{
+	GEN_UNARY_RMWcc_unchecked(LOCK_PREFIX "incl", v->counter, "%0", "e");
 }
 
 /**
@@ -142,7 +262,7 @@ static inline int atomic_inc_and_test(atomic_t *v)
  */
 static inline int atomic_add_negative(int i, atomic_t *v)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "addl", v->counter, "er", i, "%0", "s");
+	GEN_BINARY_RMWcc(LOCK_PREFIX "addl", LOCK_PREFIX "subl", v->counter, "er", i, "%0", "s");
 }
 
 /**
@@ -154,6 +274,18 @@ static inline int atomic_add_negative(int i, atomic_t *v)
  */
 static inline int atomic_add_return(int i, atomic_t *v)
 {
+	return i + xadd_check_overflow(&v->counter, i);
+}
+
+/**
+ * atomic_add_return_unchecked - add integer and return
+ * @i: integer value to add
+ * @v: pointer of type atomic_unchecked_t
+ *
+ * Atomically adds @i to @v and returns @i + @v
+ */
+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
+{
 	return i + xadd(&v->counter, i);
 }
 
@@ -170,9 +302,18 @@ static inline int atomic_sub_return(int i, atomic_t *v)
 }
 
 #define atomic_inc_return(v)  (atomic_add_return(1, v))
+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
+{
+	return atomic_add_return_unchecked(1, v);
+}
 #define atomic_dec_return(v)  (atomic_sub_return(1, v))
 
-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
+static inline int __intentional_overflow(-1) atomic_cmpxchg(atomic_t *v, int old, int new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
+
+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
 {
 	return cmpxchg(&v->counter, old, new);
 }
@@ -182,6 +323,11 @@ static inline int atomic_xchg(atomic_t *v, int new)
 	return xchg(&v->counter, new);
 }
 
+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
+{
+	return xchg(&v->counter, new);
+}
+
 /**
  * __atomic_add_unless - add unless the number is already a given value
  * @v: pointer of type atomic_t
@@ -191,14 +337,27 @@ static inline int atomic_xchg(atomic_t *v, int new)
  * Atomically adds @a to @v, so long as @v was not already @u.
  * Returns the old value of @v.
  */
-static inline int __atomic_add_unless(atomic_t *v, int a, int u)
+static inline int __intentional_overflow(-1) __atomic_add_unless(atomic_t *v, int a, int u)
 {
-	int c, old;
+	int c, old, new;
 	c = atomic_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic_cmpxchg((v), c, c + (a));
+
+		asm volatile("addl %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "jno 0f\n"
+			     "subl %2,%0\n"
+			     "int $4\n0:\n"
+			     _ASM_EXTABLE(0b, 0b)
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a));
+
+		old = atomic_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
@@ -207,6 +366,49 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
 }
 
 /**
+ * atomic_inc_not_zero_hint - increment if not null
+ * @v: pointer of type atomic_t
+ * @hint: probable value of the atomic before the increment
+ *
+ * This version of atomic_inc_not_zero() gives a hint of probable
+ * value of the atomic. This helps processor to not read the memory
+ * before doing the atomic read/modify/write cycle, lowering
+ * number of bus transactions on some arches.
+ *
+ * Returns: 0 if increment was not done, 1 otherwise.
+ */
+#define atomic_inc_not_zero_hint atomic_inc_not_zero_hint
+static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint)
+{
+	int val, c = hint, new;
+
+	/* sanity test, should be removed by compiler if hint is a constant */
+	if (!hint)
+		return __atomic_add_unless(v, 1, 0);
+
+	do {
+		asm volatile("incl %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "jno 0f\n"
+			     "decl %0\n"
+			     "int $4\n0:\n"
+			     _ASM_EXTABLE(0b, 0b)
+#endif
+
+			     : "=r" (new)
+			     : "0" (c));
+
+		val = atomic_cmpxchg(v, c, new);
+		if (val == c)
+			return 1;
+		c = val;
+	} while (c);
+
+	return 0;
+}
+
+/**
  * atomic_inc_short - increment of a short integer
  * @v: pointer to type int
  *
@@ -235,14 +437,37 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
 #endif
 
 /* These are x86-specific, used by some header files */
-#define atomic_clear_mask(mask, addr)				\
-	asm volatile(LOCK_PREFIX "andl %0,%1"			\
-		     : : "r" (~(mask)), "m" (*(addr)) : "memory")
+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
+{
+	asm volatile(LOCK_PREFIX "andl %1,%0"
+		     : "+m" (v->counter)
+		     : "r" (~(mask))
+		     : "memory");
+}
 
-#define atomic_set_mask(mask, addr)				\
-	asm volatile(LOCK_PREFIX "orl %0,%1"			\
-		     : : "r" ((unsigned)(mask)), "m" (*(addr))	\
-		     : "memory")
+static inline void atomic_clear_mask_unchecked(unsigned int mask, atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "andl %1,%0"
+		     : "+m" (v->counter)
+		     : "r" (~(mask))
+		     : "memory");
+}
+
+static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
+{
+	asm volatile(LOCK_PREFIX "orl %1,%0"
+		     : "+m" (v->counter)
+		     : "r" (mask)
+		     : "memory");
+}
+
+static inline void atomic_set_mask_unchecked(unsigned int mask, atomic_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "orl %1,%0"
+		     : "+m" (v->counter)
+		     : "r" (mask)
+		     : "memory");
+}
 
 #ifdef CONFIG_X86_32
 # include <asm/atomic64_32.h>
diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h
index b154de7..bf18a5a 100644
--- a/arch/x86/include/asm/atomic64_32.h
+++ b/arch/x86/include/asm/atomic64_32.h
@@ -12,6 +12,14 @@ typedef struct {
 	u64 __aligned(8) counter;
 } atomic64_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef struct {
+	u64 __aligned(8) counter;
+} atomic64_unchecked_t;
+#else
+typedef atomic64_t atomic64_unchecked_t;
+#endif
+
 #define ATOMIC64_INIT(val)	{ (val) }
 
 #define __ATOMIC64_DECL(sym) void atomic64_##sym(atomic64_t *, ...)
@@ -37,21 +45,31 @@ typedef struct {
 	ATOMIC64_DECL_ONE(sym##_386)
 
 ATOMIC64_DECL_ONE(add_386);
+ATOMIC64_DECL_ONE(add_unchecked_386);
 ATOMIC64_DECL_ONE(sub_386);
+ATOMIC64_DECL_ONE(sub_unchecked_386);
 ATOMIC64_DECL_ONE(inc_386);
+ATOMIC64_DECL_ONE(inc_unchecked_386);
 ATOMIC64_DECL_ONE(dec_386);
+ATOMIC64_DECL_ONE(dec_unchecked_386);
 #endif
 
 #define alternative_atomic64(f, out, in...) \
 	__alternative_atomic64(f, f, ASM_OUTPUT2(out), ## in)
 
 ATOMIC64_DECL(read);
+ATOMIC64_DECL(read_unchecked);
 ATOMIC64_DECL(set);
+ATOMIC64_DECL(set_unchecked);
 ATOMIC64_DECL(xchg);
 ATOMIC64_DECL(add_return);
+ATOMIC64_DECL(add_return_unchecked);
 ATOMIC64_DECL(sub_return);
+ATOMIC64_DECL(sub_return_unchecked);
 ATOMIC64_DECL(inc_return);
+ATOMIC64_DECL(inc_return_unchecked);
 ATOMIC64_DECL(dec_return);
+ATOMIC64_DECL(dec_return_unchecked);
 ATOMIC64_DECL(dec_if_positive);
 ATOMIC64_DECL(inc_not_zero);
 ATOMIC64_DECL(add_unless);
@@ -77,6 +95,21 @@ static inline long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n
 }
 
 /**
+ * atomic64_cmpxchg_unchecked - cmpxchg atomic64 variable
+ * @p: pointer to type atomic64_unchecked_t
+ * @o: expected value
+ * @n: new value
+ *
+ * Atomically sets @v to @n if it was equal to @o and returns
+ * the old value.
+ */
+
+static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long long o, long long n)
+{
+	return cmpxchg64(&v->counter, o, n);
+}
+
+/**
  * atomic64_xchg - xchg atomic64 variable
  * @v: pointer to type atomic64_t
  * @n: value to assign
@@ -112,6 +145,22 @@ static inline void atomic64_set(atomic64_t *v, long long i)
 }
 
 /**
+ * atomic64_set_unchecked - set atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ * @n: value to assign
+ *
+ * Atomically sets the value of @v to @n.
+ */
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
+{
+	unsigned high = (unsigned)(i >> 32);
+	unsigned low = (unsigned)i;
+	alternative_atomic64(set, /* no output */,
+			     "S" (v), "b" (low), "c" (high)
+			     : "eax", "edx", "memory");
+}
+
+/**
  * atomic64_read - read atomic64 variable
  * @v: pointer to type atomic64_t
  *
@@ -125,6 +174,19 @@ static inline long long atomic64_read(const atomic64_t *v)
  }
 
 /**
+ * atomic64_read_unchecked - read atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically reads the value of @v and returns it.
+ */
+static inline long long __intentional_overflow(-1) atomic64_read_unchecked(atomic64_unchecked_t *v)
+{
+	long long r;
+	alternative_atomic64(read, "=&A" (r), "c" (v) : "memory");
+	return r;
+ }
+
+/**
  * atomic64_add_return - add and return
  * @i: integer value to add
  * @v: pointer to type atomic64_t
@@ -139,6 +201,21 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v)
 	return i;
 }
 
+/**
+ * atomic64_add_return_unchecked - add and return
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v and returns @i + *@v
+ */
+static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	alternative_atomic64(add_return_unchecked,
+			     ASM_OUTPUT2("+A" (i), "+c" (v)),
+			     ASM_NO_INPUT_CLOBBER("memory"));
+	return i;
+}
+
 /*
  * Other variants with different arithmetic operators:
  */
@@ -158,6 +235,14 @@ static inline long long atomic64_inc_return(atomic64_t *v)
 	return a;
 }
 
+static inline long long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
+{
+	long long a;
+	alternative_atomic64(inc_return_unchecked, "=&A" (a),
+			     "S" (v) : "memory", "ecx");
+	return a;
+}
+
 static inline long long atomic64_dec_return(atomic64_t *v)
 {
 	long long a;
@@ -182,6 +267,21 @@ static inline long long atomic64_add(long long i, atomic64_t *v)
 }
 
 /**
+ * atomic64_add_unchecked - add integer to atomic64 variable
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline long long atomic64_add_unchecked(long long i, atomic64_unchecked_t *v)
+{
+	__alternative_atomic64(add_unchecked, add_return_unchecked,
+			       ASM_OUTPUT2("+A" (i), "+c" (v)),
+			       ASM_NO_INPUT_CLOBBER("memory"));
+	return i;
+}
+
+/**
  * atomic64_sub - subtract the atomic64 variable
  * @i: integer value to subtract
  * @v: pointer to type atomic64_t
diff --git a/arch/x86/include/asm/atomic64_64.h b/arch/x86/include/asm/atomic64_64.h
index 46e9052..ae45136 100644
--- a/arch/x86/include/asm/atomic64_64.h
+++ b/arch/x86/include/asm/atomic64_64.h
@@ -18,7 +18,19 @@
  */
 static inline long atomic64_read(const atomic64_t *v)
 {
-	return (*(volatile long *)&(v)->counter);
+	return (*(volatile const long *)&(v)->counter);
+}
+
+/**
+ * atomic64_read_unchecked - read atomic64 variable
+ * @v: pointer of type atomic64_unchecked_t
+ *
+ * Atomically reads the value of @v.
+ * Doesn't imply a read memory barrier.
+ */
+static inline long __intentional_overflow(-1) atomic64_read_unchecked(const atomic64_unchecked_t *v)
+{
+	return (*(volatile const long *)&(v)->counter);
 }
 
 /**
@@ -34,6 +46,18 @@ static inline void atomic64_set(atomic64_t *v, long i)
 }
 
 /**
+ * atomic64_set_unchecked - set atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ * @i: required value
+ *
+ * Atomically sets the value of @v to @i.
+ */
+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
+{
+	v->counter = i;
+}
+
+/**
  * atomic64_add - add integer to atomic64 variable
  * @i: integer value to add
  * @v: pointer to type atomic64_t
@@ -42,6 +66,28 @@ static inline void atomic64_set(atomic64_t *v, long i)
  */
 static inline void atomic64_add(long i, atomic64_t *v)
 {
+	asm volatile(LOCK_PREFIX "addq %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "subq %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "er" (i), "m" (v->counter));
+}
+
+/**
+ * atomic64_add_unchecked - add integer to atomic64 variable
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v.
+ */
+static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v)
+{
 	asm volatile(LOCK_PREFIX "addq %1,%0"
 		     : "=m" (v->counter)
 		     : "er" (i), "m" (v->counter));
@@ -56,7 +102,29 @@ static inline void atomic64_add(long i, atomic64_t *v)
  */
 static inline void atomic64_sub(long i, atomic64_t *v)
 {
-	asm volatile(LOCK_PREFIX "subq %1,%0"
+	asm volatile(LOCK_PREFIX "subq %1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "addq %1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "er" (i), "m" (v->counter));
+}
+
+/**
+ * atomic64_sub_unchecked - subtract the atomic64 variable
+ * @i: integer value to subtract
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically subtracts @i from @v.
+ */
+static inline void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "subq %1,%0\n"
 		     : "=m" (v->counter)
 		     : "er" (i), "m" (v->counter));
 }
@@ -72,7 +140,7 @@ static inline void atomic64_sub(long i, atomic64_t *v)
  */
 static inline int atomic64_sub_and_test(long i, atomic64_t *v)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "subq", v->counter, "er", i, "%0", "e");
+	GEN_BINARY_RMWcc(LOCK_PREFIX "subq", LOCK_PREFIX "addq", v->counter, "er", i, "%0", "e");
 }
 
 /**
@@ -83,6 +151,27 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v)
  */
 static inline void atomic64_inc(atomic64_t *v)
 {
+	asm volatile(LOCK_PREFIX "incq %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "decq %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "m" (v->counter));
+}
+
+/**
+ * atomic64_inc_unchecked - increment atomic64 variable
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically increments @v by 1.
+ */
+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v)
+{
 	asm volatile(LOCK_PREFIX "incq %0"
 		     : "=m" (v->counter)
 		     : "m" (v->counter));
@@ -96,7 +185,28 @@ static inline void atomic64_inc(atomic64_t *v)
  */
 static inline void atomic64_dec(atomic64_t *v)
 {
-	asm volatile(LOCK_PREFIX "decq %0"
+	asm volatile(LOCK_PREFIX "decq %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX "incq %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "=m" (v->counter)
+		     : "m" (v->counter));
+}
+
+/**
+ * atomic64_dec_unchecked - decrement atomic64 variable
+ * @v: pointer to type atomic64_t
+ *
+ * Atomically decrements @v by 1.
+ */
+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v)
+{
+	asm volatile(LOCK_PREFIX "decq %0\n"
 		     : "=m" (v->counter)
 		     : "m" (v->counter));
 }
@@ -111,7 +221,7 @@ static inline void atomic64_dec(atomic64_t *v)
  */
 static inline int atomic64_dec_and_test(atomic64_t *v)
 {
-	GEN_UNARY_RMWcc(LOCK_PREFIX "decq", v->counter, "%0", "e");
+	GEN_UNARY_RMWcc(LOCK_PREFIX "decq", LOCK_PREFIX "incq", v->counter, "%0", "e");
 }
 
 /**
@@ -124,7 +234,7 @@ static inline int atomic64_dec_and_test(atomic64_t *v)
  */
 static inline int atomic64_inc_and_test(atomic64_t *v)
 {
-	GEN_UNARY_RMWcc(LOCK_PREFIX "incq", v->counter, "%0", "e");
+	GEN_UNARY_RMWcc(LOCK_PREFIX "incq", LOCK_PREFIX "decq", v->counter, "%0", "e");
 }
 
 /**
@@ -138,7 +248,7 @@ static inline int atomic64_inc_and_test(atomic64_t *v)
  */
 static inline int atomic64_add_negative(long i, atomic64_t *v)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "addq", v->counter, "er", i, "%0", "s");
+	GEN_BINARY_RMWcc(LOCK_PREFIX "addq", LOCK_PREFIX "subq",  v->counter, "er", i, "%0", "s");
 }
 
 /**
@@ -150,6 +260,18 @@ static inline int atomic64_add_negative(long i, atomic64_t *v)
  */
 static inline long atomic64_add_return(long i, atomic64_t *v)
 {
+	return i + xadd_check_overflow(&v->counter, i);
+}
+
+/**
+ * atomic64_add_return_unchecked - add and return
+ * @i: integer value to add
+ * @v: pointer to type atomic64_unchecked_t
+ *
+ * Atomically adds @i to @v and returns @i + @v
+ */
+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
+{
 	return i + xadd(&v->counter, i);
 }
 
@@ -159,6 +281,10 @@ static inline long atomic64_sub_return(long i, atomic64_t *v)
 }
 
 #define atomic64_inc_return(v)  (atomic64_add_return(1, (v)))
+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
+{
+	return atomic64_add_return_unchecked(1, v);
+}
 #define atomic64_dec_return(v)  (atomic64_sub_return(1, (v)))
 
 static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
@@ -166,6 +292,11 @@ static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
 	return cmpxchg(&v->counter, old, new);
 }
 
+static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old, long new)
+{
+	return cmpxchg(&v->counter, old, new);
+}
+
 static inline long atomic64_xchg(atomic64_t *v, long new)
 {
 	return xchg(&v->counter, new);
@@ -182,17 +313,30 @@ static inline long atomic64_xchg(atomic64_t *v, long new)
  */
 static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
 {
-	long c, old;
+	long c, old, new;
 	c = atomic64_read(v);
 	for (;;) {
-		if (unlikely(c == (u)))
+		if (unlikely(c == u))
 			break;
-		old = atomic64_cmpxchg((v), c, c + (a));
+
+		asm volatile("add %2,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+			     "jno 0f\n"
+			     "sub %2,%0\n"
+			     "int $4\n0:\n"
+			     _ASM_EXTABLE(0b, 0b)
+#endif
+
+			     : "=r" (new)
+			     : "0" (c), "ir" (a));
+
+		old = atomic64_cmpxchg(v, c, new);
 		if (likely(old == c))
 			break;
 		c = old;
 	}
-	return c != (u);
+	return c != u;
 }
 
 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h
index 5c7198c..44180b5 100644
--- a/arch/x86/include/asm/barrier.h
+++ b/arch/x86/include/asm/barrier.h
@@ -107,7 +107,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	smp_mb();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
@@ -124,7 +124,7 @@ do {									\
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	barrier();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
index afcd35d..d01b118 100644
--- a/arch/x86/include/asm/bitops.h
+++ b/arch/x86/include/asm/bitops.h
@@ -50,7 +50,7 @@
  * a mask operation on a byte.
  */
 #define IS_IMMEDIATE(nr)		(__builtin_constant_p(nr))
-#define CONST_MASK_ADDR(nr, addr)	BITOP_ADDR((void *)(addr) + ((nr)>>3))
+#define CONST_MASK_ADDR(nr, addr)	BITOP_ADDR((volatile void *)(addr) + ((nr)>>3))
 #define CONST_MASK(nr)			(1 << ((nr) & 7))
 
 /**
@@ -203,7 +203,7 @@ static inline void change_bit(long nr, volatile unsigned long *addr)
  */
 static inline int test_and_set_bit(long nr, volatile unsigned long *addr)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "bts", *addr, "Ir", nr, "%0", "c");
+	GEN_BINARY_RMWcc_unchecked(LOCK_PREFIX "bts", *addr, "Ir", nr, "%0", "c");
 }
 
 /**
@@ -249,7 +249,7 @@ static inline int __test_and_set_bit(long nr, volatile unsigned long *addr)
  */
 static inline int test_and_clear_bit(long nr, volatile unsigned long *addr)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "btr", *addr, "Ir", nr, "%0", "c");
+	GEN_BINARY_RMWcc_unchecked(LOCK_PREFIX "btr", *addr, "Ir", nr, "%0", "c");
 }
 
 /**
@@ -302,7 +302,7 @@ static inline int __test_and_change_bit(long nr, volatile unsigned long *addr)
  */
 static inline int test_and_change_bit(long nr, volatile unsigned long *addr)
 {
-	GEN_BINARY_RMWcc(LOCK_PREFIX "btc", *addr, "Ir", nr, "%0", "c");
+	GEN_BINARY_RMWcc_unchecked(LOCK_PREFIX "btc", *addr, "Ir", nr, "%0", "c");
 }
 
 static __always_inline int constant_test_bit(long nr, const volatile unsigned long *addr)
@@ -343,7 +343,7 @@ static int test_bit(int nr, const volatile unsigned long *addr);
  *
  * Undefined if no bit exists, so code should check against 0 first.
  */
-static inline unsigned long __ffs(unsigned long word)
+static inline unsigned long __intentional_overflow(-1) __ffs(unsigned long word)
 {
 	asm("rep; bsf %1,%0"
 		: "=r" (word)
@@ -357,7 +357,7 @@ static inline unsigned long __ffs(unsigned long word)
  *
  * Undefined if no zero exists, so code should check against ~0UL first.
  */
-static inline unsigned long ffz(unsigned long word)
+static inline unsigned long __intentional_overflow(-1) ffz(unsigned long word)
 {
 	asm("rep; bsf %1,%0"
 		: "=r" (word)
@@ -371,7 +371,7 @@ static inline unsigned long ffz(unsigned long word)
  *
  * Undefined if no set bit exists, so code should check against 0 first.
  */
-static inline unsigned long __fls(unsigned long word)
+static inline unsigned long __intentional_overflow(-1) __fls(unsigned long word)
 {
 	asm("bsr %1,%0"
 	    : "=r" (word)
@@ -434,7 +434,7 @@ static inline int ffs(int x)
  * set bit if value is nonzero. The last (most significant) bit is
  * at position 32.
  */
-static inline int fls(int x)
+static inline int __intentional_overflow(-1) fls(int x)
 {
 	int r;
 
@@ -476,7 +476,7 @@ static inline int fls(int x)
  * at position 64.
  */
 #ifdef CONFIG_X86_64
-static __always_inline int fls64(__u64 x)
+static __always_inline __intentional_overflow(-1) int fls64(__u64 x)
 {
 	int bitpos = -1;
 	/*
@@ -497,8 +497,6 @@ static __always_inline int fls64(__u64 x)
 
 #include <asm-generic/bitops/sched.h>
 
-#define ARCH_HAS_FAST_MULTIPLIER 1
-
 #include <asm/arch_hweight.h>
 
 #include <asm-generic/bitops/const_hweight.h>
diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h
index 4fa687a..60f2d39 100644
--- a/arch/x86/include/asm/boot.h
+++ b/arch/x86/include/asm/boot.h
@@ -6,10 +6,15 @@
 #include <uapi/asm/boot.h>
 
 /* Physical address where kernel should be loaded. */
-#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
+#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
 				+ (CONFIG_PHYSICAL_ALIGN - 1)) \
 				& ~(CONFIG_PHYSICAL_ALIGN - 1))
 
+#ifndef __ASSEMBLY__
+extern unsigned char __LOAD_PHYSICAL_ADDR[];
+#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR)
+#endif
+
 /* Minimum kernel alignment, as a power of two */
 #ifdef CONFIG_X86_64
 #define MIN_KERNEL_ALIGN_LG2	PMD_SHIFT
diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h
index 48f99f1..d78ebf9 100644
--- a/arch/x86/include/asm/cache.h
+++ b/arch/x86/include/asm/cache.h
@@ -5,12 +5,13 @@
 
 /* L1 cache line size */
 #define L1_CACHE_SHIFT	(CONFIG_X86_L1_CACHE_SHIFT)
-#define L1_CACHE_BYTES	(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_BYTES	(_AC(1,UL) << L1_CACHE_SHIFT)
 
 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
+#define __read_only __attribute__((__section__(".data..read_only")))
 
 #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT
-#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT)
+#define INTERNODE_CACHE_BYTES (_AC(1,UL) << INTERNODE_CACHE_SHIFT)
 
 #ifdef CONFIG_X86_VSMP
 #ifdef CONFIG_SMP
diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h
index 9863ee3..4a1f8e1 100644
--- a/arch/x86/include/asm/cacheflush.h
+++ b/arch/x86/include/asm/cacheflush.h
@@ -27,7 +27,7 @@ static inline unsigned long get_page_memtype(struct page *pg)
 	unsigned long pg_flags = pg->flags & _PGMT_MASK;
 
 	if (pg_flags == _PGMT_DEFAULT)
-		return -1;
+		return ~0UL;
 	else if (pg_flags == _PGMT_WC)
 		return _PAGE_CACHE_WC;
 	else if (pg_flags == _PGMT_UC_MINUS)
diff --git a/arch/x86/include/asm/calling.h b/arch/x86/include/asm/calling.h
index cb4c73b..c473c29 100644
--- a/arch/x86/include/asm/calling.h
+++ b/arch/x86/include/asm/calling.h
@@ -82,103 +82,113 @@ For 32-bit we have the following conventions - kernel is built with
 #define RSP		152
 #define SS		160
 
-#define ARGOFFSET	R11
-#define SWFRAME		ORIG_RAX
+#define ARGOFFSET	R15
 
 	.macro SAVE_ARGS addskip=0, save_rcx=1, save_r891011=1
-	subq  $9*8+\addskip, %rsp
-	CFI_ADJUST_CFA_OFFSET	9*8+\addskip
-	movq_cfi rdi, 8*8
-	movq_cfi rsi, 7*8
-	movq_cfi rdx, 6*8
+	subq  $ORIG_RAX-ARGOFFSET+\addskip, %rsp
+	CFI_ADJUST_CFA_OFFSET	ORIG_RAX-ARGOFFSET+\addskip
+	movq_cfi rdi, RDI
+	movq_cfi rsi, RSI
+	movq_cfi rdx, RDX
 
 	.if \save_rcx
-	movq_cfi rcx, 5*8
+	movq_cfi rcx, RCX
 	.endif
 
-	movq_cfi rax, 4*8
+	movq_cfi rax, RAX
 
 	.if \save_r891011
-	movq_cfi r8,  3*8
-	movq_cfi r9,  2*8
-	movq_cfi r10, 1*8
-	movq_cfi r11, 0*8
+	movq_cfi r8,  R8
+	movq_cfi r9,  R9
+	movq_cfi r10, R10
+	movq_cfi r11, R11
 	.endif
 
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	movq_cfi r12, R12
+#endif
+
 	.endm
 
-#define ARG_SKIP	(9*8)
+#define ARG_SKIP	ORIG_RAX
 
 	.macro RESTORE_ARGS rstor_rax=1, addskip=0, rstor_rcx=1, rstor_r11=1, \
 			    rstor_r8910=1, rstor_rdx=1
+
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	movq_cfi_restore R12, r12
+#endif
+
 	.if \rstor_r11
-	movq_cfi_restore 0*8, r11
+	movq_cfi_restore R11, r11
 	.endif
 
 	.if \rstor_r8910
-	movq_cfi_restore 1*8, r10
-	movq_cfi_restore 2*8, r9
-	movq_cfi_restore 3*8, r8
+	movq_cfi_restore R10, r10
+	movq_cfi_restore R9, r9
+	movq_cfi_restore R8, r8
 	.endif
 
 	.if \rstor_rax
-	movq_cfi_restore 4*8, rax
+	movq_cfi_restore RAX, rax
 	.endif
 
 	.if \rstor_rcx
-	movq_cfi_restore 5*8, rcx
+	movq_cfi_restore RCX, rcx
 	.endif
 
 	.if \rstor_rdx
-	movq_cfi_restore 6*8, rdx
+	movq_cfi_restore RDX, rdx
 	.endif
 
-	movq_cfi_restore 7*8, rsi
-	movq_cfi_restore 8*8, rdi
+	movq_cfi_restore RSI, rsi
+	movq_cfi_restore RDI, rdi
 
-	.if ARG_SKIP+\addskip > 0
-	addq $ARG_SKIP+\addskip, %rsp
-	CFI_ADJUST_CFA_OFFSET	-(ARG_SKIP+\addskip)
+	.if ORIG_RAX+\addskip > 0
+	addq $ORIG_RAX+\addskip, %rsp
+	CFI_ADJUST_CFA_OFFSET	-(ORIG_RAX+\addskip)
 	.endif
 	.endm
 
-	.macro LOAD_ARGS offset, skiprax=0
-	movq \offset(%rsp),    %r11
-	movq \offset+8(%rsp),  %r10
-	movq \offset+16(%rsp), %r9
-	movq \offset+24(%rsp), %r8
-	movq \offset+40(%rsp), %rcx
-	movq \offset+48(%rsp), %rdx
-	movq \offset+56(%rsp), %rsi
-	movq \offset+64(%rsp), %rdi
+	.macro LOAD_ARGS skiprax=0
+	movq R11(%rsp),    %r11
+	movq R10(%rsp),  %r10
+	movq R9(%rsp), %r9
+	movq R8(%rsp), %r8
+	movq RCX(%rsp), %rcx
+	movq RDX(%rsp), %rdx
+	movq RSI(%rsp), %rsi
+	movq RDI(%rsp), %rdi
 	.if \skiprax
 	.else
-	movq \offset+72(%rsp), %rax
+	movq RAX(%rsp), %rax
 	.endif
 	.endm
 
-#define REST_SKIP	(6*8)
-
 	.macro SAVE_REST
-	subq $REST_SKIP, %rsp
-	CFI_ADJUST_CFA_OFFSET	REST_SKIP
-	movq_cfi rbx, 5*8
-	movq_cfi rbp, 4*8
-	movq_cfi r12, 3*8
-	movq_cfi r13, 2*8
-	movq_cfi r14, 1*8
-	movq_cfi r15, 0*8
+	movq_cfi rbx, RBX
+	movq_cfi rbp, RBP
+
+#ifndef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	movq_cfi r12, R12
+#endif
+
+	movq_cfi r13, R13
+	movq_cfi r14, R14
+	movq_cfi r15, R15
 	.endm
 
 	.macro RESTORE_REST
-	movq_cfi_restore 0*8, r15
-	movq_cfi_restore 1*8, r14
-	movq_cfi_restore 2*8, r13
-	movq_cfi_restore 3*8, r12
-	movq_cfi_restore 4*8, rbp
-	movq_cfi_restore 5*8, rbx
-	addq $REST_SKIP, %rsp
-	CFI_ADJUST_CFA_OFFSET	-(REST_SKIP)
+	movq_cfi_restore R15, r15
+	movq_cfi_restore R14, r14
+	movq_cfi_restore R13, r13
+
+#ifndef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	movq_cfi_restore R12, r12
+#endif
+
+	movq_cfi_restore RBP, rbp
+	movq_cfi_restore RBX, rbx
 	.endm
 
 	.macro SAVE_ALL
diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h
index f50de69..2b0a458 100644
--- a/arch/x86/include/asm/checksum_32.h
+++ b/arch/x86/include/asm/checksum_32.h
@@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
 					    int len, __wsum sum,
 					    int *src_err_ptr, int *dst_err_ptr);
 
+asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst,
+						  int len, __wsum sum,
+						  int *src_err_ptr, int *dst_err_ptr);
+
+asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst,
+						  int len, __wsum sum,
+						  int *src_err_ptr, int *dst_err_ptr);
+
 /*
  *	Note: when you get a NULL pointer exception here this means someone
  *	passed in an incorrect kernel address to one of these functions.
@@ -53,7 +61,7 @@ static inline __wsum csum_partial_copy_from_user(const void __user *src,
 
 	might_sleep();
 	stac();
-	ret = csum_partial_copy_generic((__force void *)src, dst,
+	ret = csum_partial_copy_generic_from_user((__force void *)src, dst,
 					len, sum, err_ptr, NULL);
 	clac();
 
@@ -187,7 +195,7 @@ static inline __wsum csum_and_copy_to_user(const void *src,
 	might_sleep();
 	if (access_ok(VERIFY_WRITE, dst, len)) {
 		stac();
-		ret = csum_partial_copy_generic(src, (__force void *)dst,
+		ret = csum_partial_copy_generic_to_user(src, (__force void *)dst,
 						len, sum, NULL, err_ptr);
 		clac();
 		return ret;
diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h
index d47786a..2d8883e 100644
--- a/arch/x86/include/asm/cmpxchg.h
+++ b/arch/x86/include/asm/cmpxchg.h
@@ -14,8 +14,12 @@ extern void __cmpxchg_wrong_size(void)
 	__compiletime_error("Bad argument size for cmpxchg");
 extern void __xadd_wrong_size(void)
 	__compiletime_error("Bad argument size for xadd");
+extern void __xadd_check_overflow_wrong_size(void)
+	__compiletime_error("Bad argument size for xadd_check_overflow");
 extern void __add_wrong_size(void)
 	__compiletime_error("Bad argument size for add");
+extern void __add_check_overflow_wrong_size(void)
+	__compiletime_error("Bad argument size for add_check_overflow");
 
 /*
  * Constants for operation sizes. On 32-bit, the 64-bit size it set to
@@ -67,6 +71,38 @@ extern void __add_wrong_size(void)
 		__ret;							\
 	})
 
+#ifdef CONFIG_PAX_REFCOUNT
+#define __xchg_op_check_overflow(ptr, arg, op, lock)			\
+	({								\
+	        __typeof__ (*(ptr)) __ret = (arg);			\
+		switch (sizeof(*(ptr))) {				\
+		case __X86_CASE_L:					\
+			asm volatile (lock #op "l %0, %1\n"		\
+				      "jno 0f\n"			\
+				      "mov %0,%1\n"			\
+				      "int $4\n0:\n"			\
+				      _ASM_EXTABLE(0b, 0b)		\
+				      : "+r" (__ret), "+m" (*(ptr))	\
+				      : : "memory", "cc");		\
+			break;						\
+		case __X86_CASE_Q:					\
+			asm volatile (lock #op "q %q0, %1\n"		\
+				      "jno 0f\n"			\
+				      "mov %0,%1\n"			\
+				      "int $4\n0:\n"			\
+				      _ASM_EXTABLE(0b, 0b)		\
+				      : "+r" (__ret), "+m" (*(ptr))	\
+				      : : "memory", "cc");		\
+			break;						\
+		default:						\
+			__ ## op ## _check_overflow_wrong_size();	\
+		}							\
+		__ret;							\
+	})
+#else
+#define __xchg_op_check_overflow(ptr, arg, op, lock) __xchg_op(ptr, arg, op, lock)
+#endif
+
 /*
  * Note: no "lock" prefix even on SMP: xchg always implies lock anyway.
  * Since this is generally used to protect other memory information, we
@@ -167,6 +203,9 @@ extern void __add_wrong_size(void)
 #define xadd_sync(ptr, inc)	__xadd((ptr), (inc), "lock; ")
 #define xadd_local(ptr, inc)	__xadd((ptr), (inc), "")
 
+#define __xadd_check_overflow(ptr, inc, lock)	__xchg_op_check_overflow((ptr), (inc), xadd, lock)
+#define xadd_check_overflow(ptr, inc)		__xadd_check_overflow((ptr), (inc), LOCK_PREFIX)
+
 #define __add(ptr, inc, lock)						\
 	({								\
 	        __typeof__ (*(ptr)) __ret = (inc);			\
diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
index 59c6c40..5e0b22c 100644
--- a/arch/x86/include/asm/compat.h
+++ b/arch/x86/include/asm/compat.h
@@ -41,7 +41,7 @@ typedef s64 __attribute__((aligned(4))) compat_s64;
 typedef u32		compat_uint_t;
 typedef u32		compat_ulong_t;
 typedef u64 __attribute__((aligned(4))) compat_u64;
-typedef u32		compat_uptr_t;
+typedef u32		__user compat_uptr_t;
 
 struct compat_timespec {
 	compat_time_t	tv_sec;
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index e265ff9..72c253b 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -203,7 +203,7 @@
 #define X86_FEATURE_DECODEASSISTS (8*32+12) /* AMD Decode Assists support */
 #define X86_FEATURE_PAUSEFILTER (8*32+13) /* AMD filtered pause intercept */
 #define X86_FEATURE_PFTHRESHOLD (8*32+14) /* AMD pause filter threshold */
-
+#define X86_FEATURE_STRONGUDEREF (8*32+31) /* PaX PCID based strong UDEREF */
 
 /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */
 #define X86_FEATURE_FSGSBASE	(9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/
@@ -211,7 +211,7 @@
 #define X86_FEATURE_BMI1	(9*32+ 3) /* 1st group bit manipulation extensions */
 #define X86_FEATURE_HLE		(9*32+ 4) /* Hardware Lock Elision */
 #define X86_FEATURE_AVX2	(9*32+ 5) /* AVX2 instructions */
-#define X86_FEATURE_SMEP	(9*32+ 7) /* Supervisor Mode Execution Protection */
+#define X86_FEATURE_SMEP	(9*32+ 7) /* Supervisor Mode Execution Prevention */
 #define X86_FEATURE_BMI2	(9*32+ 8) /* 2nd group bit manipulation extensions */
 #define X86_FEATURE_ERMS	(9*32+ 9) /* Enhanced REP MOVSB/STOSB */
 #define X86_FEATURE_INVPCID	(9*32+10) /* Invalidate Processor Context ID */
@@ -359,6 +359,7 @@ extern const char * const x86_power_flags[32];
 #undef  cpu_has_centaur_mcr
 #define cpu_has_centaur_mcr	0
 
+#define cpu_has_pcid		boot_cpu_has(X86_FEATURE_PCID)
 #endif /* CONFIG_X86_64 */
 
 #if __GNUC__ >= 4
@@ -411,7 +412,8 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
 
 #ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS
 	t_warn:
-		warn_pre_alternatives();
+		if (bit != X86_FEATURE_PCID && bit != X86_FEATURE_INVPCID)
+			warn_pre_alternatives();
 		return false;
 #endif
 
@@ -431,7 +433,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
 			     ".section .discard,\"aw\",@progbits\n"
 			     " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
 			     ".previous\n"
-			     ".section .altinstr_replacement,\"ax\"\n"
+			     ".section .altinstr_replacement,\"a\"\n"
 			     "3: movb $1,%0\n"
 			     "4:\n"
 			     ".previous\n"
@@ -468,7 +470,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
 			 " .byte 2b - 1b\n"		/* src len */
 			 " .byte 4f - 3f\n"		/* repl len */
 			 ".previous\n"
-			 ".section .altinstr_replacement,\"ax\"\n"
+			 ".section .altinstr_replacement,\"a\"\n"
 			 "3: .byte 0xe9\n .long %l[t_no] - 2b\n"
 			 "4:\n"
 			 ".previous\n"
@@ -501,7 +503,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
 			     ".section .discard,\"aw\",@progbits\n"
 			     " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
 			     ".previous\n"
-			     ".section .altinstr_replacement,\"ax\"\n"
+			     ".section .altinstr_replacement,\"a\"\n"
 			     "3: movb $0,%0\n"
 			     "4:\n"
 			     ".previous\n"
@@ -515,7 +517,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
 			     ".section .discard,\"aw\",@progbits\n"
 			     " .byte 0xff + (6f-5f) - (4b-3b)\n" /* size check */
 			     ".previous\n"
-			     ".section .altinstr_replacement,\"ax\"\n"
+			     ".section .altinstr_replacement,\"a\"\n"
 			     "5: movb $1,%0\n"
 			     "6:\n"
 			     ".previous\n"
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
index 50d033a..37deb26 100644
--- a/arch/x86/include/asm/desc.h
+++ b/arch/x86/include/asm/desc.h
@@ -4,6 +4,7 @@
 #include <asm/desc_defs.h>
 #include <asm/ldt.h>
 #include <asm/mmu.h>
+#include <asm/pgtable.h>
 
 #include <linux/smp.h>
 #include <linux/percpu.h>
@@ -17,6 +18,7 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in
 
 	desc->type		= (info->read_exec_only ^ 1) << 1;
 	desc->type	       |= info->contents << 2;
+	desc->type	       |= info->seg_not_present ^ 1;
 
 	desc->s			= 1;
 	desc->dpl		= 0x3;
@@ -35,19 +37,14 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in
 }
 
 extern struct desc_ptr idt_descr;
-extern gate_desc idt_table[];
-extern struct desc_ptr debug_idt_descr;
-extern gate_desc debug_idt_table[];
-
-struct gdt_page {
-	struct desc_struct gdt[GDT_ENTRIES];
-} __attribute__((aligned(PAGE_SIZE)));
-
-DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page);
+extern gate_desc idt_table[IDT_ENTRIES];
+extern const struct desc_ptr debug_idt_descr;
+extern gate_desc debug_idt_table[IDT_ENTRIES];
 
+extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)];
 static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
 {
-	return per_cpu(gdt_page, cpu).gdt;
+	return cpu_gdt_table[cpu];
 }
 
 #ifdef CONFIG_X86_64
@@ -72,8 +69,14 @@ static inline void pack_gate(gate_desc *gate, unsigned char type,
 			     unsigned long base, unsigned dpl, unsigned flags,
 			     unsigned short seg)
 {
-	gate->a = (seg << 16) | (base & 0xffff);
-	gate->b = (base & 0xffff0000) | (((0x80 | type | (dpl << 5)) & 0xff) << 8);
+	gate->gate.offset_low	= base;
+	gate->gate.seg		= seg;
+	gate->gate.reserved	= 0;
+	gate->gate.type		= type;
+	gate->gate.s		= 0;
+	gate->gate.dpl		= dpl;
+	gate->gate.p		= 1;
+	gate->gate.offset_high	= base >> 16;
 }
 
 #endif
@@ -118,12 +121,16 @@ static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
 
 static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate)
 {
+	pax_open_kernel();
 	memcpy(&idt[entry], gate, sizeof(*gate));
+	pax_close_kernel();
 }
 
 static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc)
 {
+	pax_open_kernel();
 	memcpy(&ldt[entry], desc, 8);
+	pax_close_kernel();
 }
 
 static inline void
@@ -137,7 +144,9 @@ native_write_gdt_entry(struct desc_struct *gdt, int entry, const void *desc, int
 	default:	size = sizeof(*gdt);		break;
 	}
 
+	pax_open_kernel();
 	memcpy(&gdt[entry], desc, size);
+	pax_close_kernel();
 }
 
 static inline void pack_descriptor(struct desc_struct *desc, unsigned long base,
@@ -210,7 +219,9 @@ static inline void native_set_ldt(const void *addr, unsigned int entries)
 
 static inline void native_load_tr_desc(void)
 {
+	pax_open_kernel();
 	asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8));
+	pax_close_kernel();
 }
 
 static inline void native_load_gdt(const struct desc_ptr *dtr)
@@ -247,8 +258,10 @@ static inline void native_load_tls(struct thread_struct *t, unsigned int cpu)
 	struct desc_struct *gdt = get_cpu_gdt_table(cpu);
 	unsigned int i;
 
+	pax_open_kernel();
 	for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
 		gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i];
+	pax_close_kernel();
 }
 
 #define _LDT_empty(info)				\
@@ -287,7 +300,7 @@ static inline void load_LDT(mm_context_t *pc)
 	preempt_enable();
 }
 
-static inline unsigned long get_desc_base(const struct desc_struct *desc)
+static inline unsigned long __intentional_overflow(-1) get_desc_base(const struct desc_struct *desc)
 {
 	return (unsigned)(desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24));
 }
@@ -311,7 +324,7 @@ static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit)
 }
 
 #ifdef CONFIG_X86_64
-static inline void set_nmi_gate(int gate, void *addr)
+static inline void set_nmi_gate(int gate, const void *addr)
 {
 	gate_desc s;
 
@@ -321,14 +334,14 @@ static inline void set_nmi_gate(int gate, void *addr)
 #endif
 
 #ifdef CONFIG_TRACING
-extern struct desc_ptr trace_idt_descr;
-extern gate_desc trace_idt_table[];
+extern const struct desc_ptr trace_idt_descr;
+extern gate_desc trace_idt_table[IDT_ENTRIES];
 static inline void write_trace_idt_entry(int entry, const gate_desc *gate)
 {
 	write_idt_entry(trace_idt_table, entry, gate);
 }
 
-static inline void _trace_set_gate(int gate, unsigned type, void *addr,
+static inline void _trace_set_gate(int gate, unsigned type, const void *addr,
 				   unsigned dpl, unsigned ist, unsigned seg)
 {
 	gate_desc s;
@@ -348,7 +361,7 @@ static inline void write_trace_idt_entry(int entry, const gate_desc *gate)
 #define _trace_set_gate(gate, type, addr, dpl, ist, seg)
 #endif
 
-static inline void _set_gate(int gate, unsigned type, void *addr,
+static inline void _set_gate(int gate, unsigned type, const void *addr,
 			     unsigned dpl, unsigned ist, unsigned seg)
 {
 	gate_desc s;
@@ -371,9 +384,9 @@ static inline void _set_gate(int gate, unsigned type, void *addr,
 #define set_intr_gate(n, addr)						\
 	do {								\
 		BUG_ON((unsigned)n > 0xFF);				\
-		_set_gate(n, GATE_INTERRUPT, (void *)addr, 0, 0,	\
+		_set_gate(n, GATE_INTERRUPT, (const void *)addr, 0, 0,	\
 			  __KERNEL_CS);					\
-		_trace_set_gate(n, GATE_INTERRUPT, (void *)trace_##addr,\
+		_trace_set_gate(n, GATE_INTERRUPT, (const void *)trace_##addr,\
 				0, 0, __KERNEL_CS);			\
 	} while (0)
 
@@ -401,19 +414,19 @@ static inline void alloc_system_vector(int vector)
 /*
  * This routine sets up an interrupt gate at directory privilege level 3.
  */
-static inline void set_system_intr_gate(unsigned int n, void *addr)
+static inline void set_system_intr_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS);
 }
 
-static inline void set_system_trap_gate(unsigned int n, void *addr)
+static inline void set_system_trap_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS);
 }
 
-static inline void set_trap_gate(unsigned int n, void *addr)
+static inline void set_trap_gate(unsigned int n, const void *addr)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS);
@@ -422,16 +435,16 @@ static inline void set_trap_gate(unsigned int n, void *addr)
 static inline void set_task_gate(unsigned int n, unsigned int gdt_entry)
 {
 	BUG_ON((unsigned)n > 0xFF);
-	_set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3));
+	_set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3));
 }
 
-static inline void set_intr_gate_ist(int n, void *addr, unsigned ist)
+static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS);
 }
 
-static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist)
+static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist)
 {
 	BUG_ON((unsigned)n > 0xFF);
 	_set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS);
@@ -503,4 +516,17 @@ static inline void load_current_idt(void)
 	else
 		load_idt((const struct desc_ptr *)&idt_descr);
 }
+
+#ifdef CONFIG_X86_32
+static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu)
+{
+	struct desc_struct d;
+
+	if (likely(limit))
+		limit = (limit - 1UL) >> PAGE_SHIFT;
+	pack_descriptor(&d, base, limit, 0xFB, 0xC);
+	write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S);
+}
+#endif
+
 #endif /* _ASM_X86_DESC_H */
diff --git a/arch/x86/include/asm/desc_defs.h b/arch/x86/include/asm/desc_defs.h
index 278441f..b95a174 100644
--- a/arch/x86/include/asm/desc_defs.h
+++ b/arch/x86/include/asm/desc_defs.h
@@ -31,6 +31,12 @@ struct desc_struct {
 			unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1;
 			unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8;
 		};
+		struct {
+			u16 offset_low;
+			u16 seg;
+			unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1;
+			unsigned offset_high: 16;
+		} gate;
 	};
 } __attribute__((packed));
 
diff --git a/arch/x86/include/asm/div64.h b/arch/x86/include/asm/div64.h
index ced283a..ffe04cc 100644
--- a/arch/x86/include/asm/div64.h
+++ b/arch/x86/include/asm/div64.h
@@ -39,7 +39,7 @@
 	__mod;							\
 })
 
-static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
+static inline u64 __intentional_overflow(-1) div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
 {
 	union {
 		u64 v64;
diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
index 1a055c8..a1701de 100644
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@@ -75,9 +75,6 @@ typedef struct user_fxsr_struct elf_fpxregset_t;
 
 #include <asm/vdso.h>
 
-#ifdef CONFIG_X86_64
-extern unsigned int vdso64_enabled;
-#endif
 #if defined(CONFIG_X86_32) || defined(CONFIG_COMPAT)
 extern unsigned int vdso32_enabled;
 #endif
@@ -248,7 +245,25 @@ extern int force_personality32;
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
+#ifdef CONFIG_PAX_SEGMEXEC
+#define ELF_ET_DYN_BASE		((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2)
+#else
 #define ELF_ET_DYN_BASE		(TASK_SIZE / 3 * 2)
+#endif
+
+#ifdef CONFIG_PAX_ASLR
+#ifdef CONFIG_X86_32
+#define PAX_ELF_ET_DYN_BASE	0x10000000UL
+
+#define PAX_DELTA_MMAP_LEN	(current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16)
+#define PAX_DELTA_STACK_LEN	(current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16)
+#else
+#define PAX_ELF_ET_DYN_BASE	0x400000UL
+
+#define PAX_DELTA_MMAP_LEN	((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3)
+#define PAX_DELTA_STACK_LEN	((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3)
+#endif
+#endif
 
 /* This yields a mask that user programs can use to figure out what
    instruction set this CPU supports.  This could be done in user space,
@@ -297,17 +312,13 @@ do {									\
 
 #define ARCH_DLINFO							\
 do {									\
-	if (vdso64_enabled)						\
-		NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
-			    (unsigned long __force)current->mm->context.vdso); \
+	NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso);	\
 } while (0)
 
 /* As a historical oddity, the x32 and x86_64 vDSOs are controlled together. */
 #define ARCH_DLINFO_X32							\
 do {									\
-	if (vdso64_enabled)						\
-		NEW_AUX_ENT(AT_SYSINFO_EHDR,				\
-			    (unsigned long __force)current->mm->context.vdso); \
+	NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso);	\
 } while (0)
 
 #define AT_SYSINFO		32
@@ -322,10 +333,10 @@ else									\
 
 #endif /* !CONFIG_X86_32 */
 
-#define VDSO_CURRENT_BASE	((unsigned long)current->mm->context.vdso)
+#define VDSO_CURRENT_BASE	(current->mm->context.vdso)
 
 #define VDSO_ENTRY							\
-	((unsigned long)current->mm->context.vdso +			\
+	(current->mm->context.vdso +					\
 	 selected_vdso32->sym___kernel_vsyscall)
 
 struct linux_binprm;
@@ -337,9 +348,6 @@ extern int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
 					      int uses_interp);
 #define compat_arch_setup_additional_pages compat_arch_setup_additional_pages
 
-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
-#define arch_randomize_brk arch_randomize_brk
-
 /*
  * True on X86_32 or when emulating IA32 on X86_64
  */
diff --git a/arch/x86/include/asm/emergency-restart.h b/arch/x86/include/asm/emergency-restart.h
index 77a99ac..39ff7f5 100644
--- a/arch/x86/include/asm/emergency-restart.h
+++ b/arch/x86/include/asm/emergency-restart.h
@@ -1,6 +1,6 @@
 #ifndef _ASM_X86_EMERGENCY_RESTART_H
 #define _ASM_X86_EMERGENCY_RESTART_H
 
-extern void machine_emergency_restart(void);
+extern void machine_emergency_restart(void) __noreturn;
 
 #endif /* _ASM_X86_EMERGENCY_RESTART_H */
diff --git a/arch/x86/include/asm/floppy.h b/arch/x86/include/asm/floppy.h
index 1c7eefe..d0e4702 100644
--- a/arch/x86/include/asm/floppy.h
+++ b/arch/x86/include/asm/floppy.h
@@ -229,18 +229,18 @@ static struct fd_routine_l {
 	int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
 } fd_routine[] = {
 	{
-		request_dma,
-		free_dma,
-		get_dma_residue,
-		dma_mem_alloc,
-		hard_dma_setup
+		._request_dma = request_dma,
+		._free_dma = free_dma,
+		._get_dma_residue = get_dma_residue,
+		._dma_mem_alloc = dma_mem_alloc,
+		._dma_setup = hard_dma_setup
 	},
 	{
-		vdma_request_dma,
-		vdma_nop,
-		vdma_get_dma_residue,
-		vdma_mem_alloc,
-		vdma_dma_setup
+		._request_dma = vdma_request_dma,
+		._free_dma = vdma_nop,
+		._get_dma_residue = vdma_get_dma_residue,
+		._dma_mem_alloc = vdma_mem_alloc,
+		._dma_setup = vdma_dma_setup
 	}
 };
 
diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
index 115e368..76ecf6c 100644
--- a/arch/x86/include/asm/fpu-internal.h
+++ b/arch/x86/include/asm/fpu-internal.h
@@ -124,8 +124,11 @@ static inline void sanitize_i387_state(struct task_struct *tsk)
 #define user_insn(insn, output, input...)				\
 ({									\
 	int err;							\
+	pax_open_userland();						\
 	asm volatile(ASM_STAC "\n"					\
-		     "1:" #insn "\n\t"					\
+		     "1:"						\
+		     __copyuser_seg					\
+		     #insn "\n\t"					\
 		     "2: " ASM_CLAC "\n"				\
 		     ".section .fixup,\"ax\"\n"				\
 		     "3:  movl $-1,%[err]\n"				\
@@ -134,6 +137,7 @@ static inline void sanitize_i387_state(struct task_struct *tsk)
 		     _ASM_EXTABLE(1b, 3b)				\
 		     : [err] "=r" (err), output				\
 		     : "0"(0), input);					\
+	pax_close_userland();						\
 	err;								\
 })
 
@@ -298,7 +302,7 @@ static inline int restore_fpu_checking(struct task_struct *tsk)
 			"fnclex\n\t"
 			"emms\n\t"
 			"fildl %P[addr]"	/* set F?P to defined value */
-			: : [addr] "m" (tsk->thread.fpu.has_fpu));
+			: : [addr] "m" (init_tss[raw_smp_processor_id()].x86_tss.sp0));
 	}
 
 	return fpu_restore_checking(&tsk->thread.fpu);
diff --git a/arch/x86/include/asm/futex.h b/arch/x86/include/asm/futex.h
index b4c1f54..e290c08 100644
--- a/arch/x86/include/asm/futex.h
+++ b/arch/x86/include/asm/futex.h
@@ -12,6 +12,7 @@
 #include <asm/smap.h>
 
 #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg)	\
+	typecheck(u32 __user *, uaddr);				\
 	asm volatile("\t" ASM_STAC "\n"				\
 		     "1:\t" insn "\n"				\
 		     "2:\t" ASM_CLAC "\n"			\
@@ -20,15 +21,16 @@
 		     "\tjmp\t2b\n"				\
 		     "\t.previous\n"				\
 		     _ASM_EXTABLE(1b, 3b)			\
-		     : "=r" (oldval), "=r" (ret), "+m" (*uaddr)	\
+		     : "=r" (oldval), "=r" (ret), "+m" (*(u32 __user *)____m(uaddr))	\
 		     : "i" (-EFAULT), "0" (oparg), "1" (0))
 
 #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg)	\
+	typecheck(u32 __user *, uaddr);				\
 	asm volatile("\t" ASM_STAC "\n"				\
 		     "1:\tmovl	%2, %0\n"			\
 		     "\tmovl\t%0, %3\n"				\
 		     "\t" insn "\n"				\
-		     "2:\t" LOCK_PREFIX "cmpxchgl %3, %2\n"	\
+		     "2:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %3, %2\n"	\
 		     "\tjnz\t1b\n"				\
 		     "3:\t" ASM_CLAC "\n"			\
 		     "\t.section .fixup,\"ax\"\n"		\
@@ -38,7 +40,7 @@
 		     _ASM_EXTABLE(1b, 4b)			\
 		     _ASM_EXTABLE(2b, 4b)			\
 		     : "=&a" (oldval), "=&r" (ret),		\
-		       "+m" (*uaddr), "=&r" (tem)		\
+		       "+m" (*(u32 __user *)____m(uaddr)), "=&r" (tem)	\
 		     : "r" (oparg), "i" (-EFAULT), "1" (0))
 
 static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
@@ -57,12 +59,13 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
 
 	pagefault_disable();
 
+	pax_open_userland();
 	switch (op) {
 	case FUTEX_OP_SET:
-		__futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg);
+		__futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg);
 		break;
 	case FUTEX_OP_ADD:
-		__futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval,
+		__futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval,
 				   uaddr, oparg);
 		break;
 	case FUTEX_OP_OR:
@@ -77,6 +80,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
 	default:
 		ret = -ENOSYS;
 	}
+	pax_close_userland();
 
 	pagefault_enable();
 
diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
index 4615906..788c817 100644
--- a/arch/x86/include/asm/hw_irq.h
+++ b/arch/x86/include/asm/hw_irq.h
@@ -164,8 +164,8 @@ extern void setup_ioapic_dest(void);
 extern void enable_IO_APIC(void);
 
 /* Statistics */
-extern atomic_t irq_err_count;
-extern atomic_t irq_mis_count;
+extern atomic_unchecked_t irq_err_count;
+extern atomic_unchecked_t irq_mis_count;
 
 /* EISA */
 extern void eisa_set_level_irq(unsigned int irq);
diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h
index a203659..9889f1c 100644
--- a/arch/x86/include/asm/i8259.h
+++ b/arch/x86/include/asm/i8259.h
@@ -62,7 +62,7 @@ struct legacy_pic {
 	void (*init)(int auto_eoi);
 	int (*irq_pending)(unsigned int irq);
 	void (*make_irq)(unsigned int irq);
-};
+} __do_const;
 
 extern struct legacy_pic *legacy_pic;
 extern struct legacy_pic null_legacy_pic;
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index b8237d8..3e8864e 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -52,12 +52,12 @@ static inline void name(type val, volatile void __iomem *addr) \
 "m" (*(volatile type __force *)addr) barrier); }
 
 build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
-build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
-build_mmio_read(readl, "l", unsigned int, "=r", :"memory")
+build_mmio_read(__intentional_overflow(-1) readw, "w", unsigned short, "=r", :"memory")
+build_mmio_read(__intentional_overflow(-1) readl, "l", unsigned int, "=r", :"memory")
 
 build_mmio_read(__readb, "b", unsigned char, "=q", )
-build_mmio_read(__readw, "w", unsigned short, "=r", )
-build_mmio_read(__readl, "l", unsigned int, "=r", )
+build_mmio_read(__intentional_overflow(-1) __readw, "w", unsigned short, "=r", )
+build_mmio_read(__intentional_overflow(-1) __readl, "l", unsigned int, "=r", )
 
 build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
 build_mmio_write(writew, "w", unsigned short, "r", :"memory")
@@ -109,7 +109,7 @@ build_mmio_write(writeq, "q", unsigned long, "r", :"memory")
  *	this function
  */
 
-static inline phys_addr_t virt_to_phys(volatile void *address)
+static inline phys_addr_t __intentional_overflow(-1) virt_to_phys(volatile void *address)
 {
 	return __pa(address);
 }
@@ -185,7 +185,7 @@ static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
 	return ioremap_nocache(offset, size);
 }
 
-extern void iounmap(volatile void __iomem *addr);
+extern void iounmap(const volatile void __iomem *addr);
 
 extern void set_iounmap_nonlazy(void);
 
@@ -195,6 +195,17 @@ extern void set_iounmap_nonlazy(void);
 
 #include <linux/vmalloc.h>
 
+#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
+static inline int valid_phys_addr_range(unsigned long addr, size_t count)
+{
+	return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0;
+}
+
+static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count)
+{
+	return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0;
+}
+
 /*
  * Convert a virtual cached pointer to an uncached pointer
  */
diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
index 0a8b519..80e7d5b 100644
--- a/arch/x86/include/asm/irqflags.h
+++ b/arch/x86/include/asm/irqflags.h
@@ -141,6 +141,11 @@ static inline notrace unsigned long arch_local_irq_save(void)
 	sti;					\
 	sysexit
 
+#define GET_CR0_INTO_RDI		mov %cr0, %rdi
+#define SET_RDI_INTO_CR0		mov %rdi, %cr0
+#define GET_CR3_INTO_RDI		mov %cr3, %rdi
+#define SET_RDI_INTO_CR3		mov %rdi, %cr3
+
 #else
 #define INTERRUPT_RETURN		iret
 #define ENABLE_INTERRUPTS_SYSEXIT	sti; sysexit
diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h
index 53cdfb2..d1369e6 100644
--- a/arch/x86/include/asm/kprobes.h
+++ b/arch/x86/include/asm/kprobes.h
@@ -38,13 +38,8 @@ typedef u8 kprobe_opcode_t;
 #define RELATIVEJUMP_SIZE 5
 #define RELATIVECALL_OPCODE 0xe8
 #define RELATIVE_ADDR_SIZE 4
-#define MAX_STACK_SIZE 64
-#define MIN_STACK_SIZE(ADDR)					       \
-	(((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \
-			      THREAD_SIZE - (unsigned long)(ADDR)))    \
-	 ? (MAX_STACK_SIZE)					       \
-	 : (((unsigned long)current_thread_info()) +		       \
-	    THREAD_SIZE - (unsigned long)(ADDR)))
+#define MAX_STACK_SIZE 64UL
+#define MIN_STACK_SIZE(ADDR)	min(MAX_STACK_SIZE, current->thread.sp0 - (unsigned long)(ADDR))
 
 #define flush_insn_slot(p)	do { } while (0)
 
diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h
index 4ad6560..75c7bdd 100644
--- a/arch/x86/include/asm/local.h
+++ b/arch/x86/include/asm/local.h
@@ -10,33 +10,97 @@ typedef struct {
 	atomic_long_t a;
 } local_t;
 
+typedef struct {
+	atomic_long_unchecked_t a;
+} local_unchecked_t;
+
 #define LOCAL_INIT(i)	{ ATOMIC_LONG_INIT(i) }
 
 #define local_read(l)	atomic_long_read(&(l)->a)
+#define local_read_unchecked(l)	atomic_long_read_unchecked(&(l)->a)
 #define local_set(l, i)	atomic_long_set(&(l)->a, (i))
+#define local_set_unchecked(l, i)	atomic_long_set_unchecked(&(l)->a, (i))
 
 static inline void local_inc(local_t *l)
 {
-	asm volatile(_ASM_INC "%0"
+	asm volatile(_ASM_INC "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_DEC "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (l->a.counter));
+}
+
+static inline void local_inc_unchecked(local_unchecked_t *l)
+{
+	asm volatile(_ASM_INC "%0\n"
 		     : "+m" (l->a.counter));
 }
 
 static inline void local_dec(local_t *l)
 {
-	asm volatile(_ASM_DEC "%0"
+	asm volatile(_ASM_DEC "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_INC "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (l->a.counter));
+}
+
+static inline void local_dec_unchecked(local_unchecked_t *l)
+{
+	asm volatile(_ASM_DEC "%0\n"
 		     : "+m" (l->a.counter));
 }
 
 static inline void local_add(long i, local_t *l)
 {
-	asm volatile(_ASM_ADD "%1,%0"
+	asm volatile(_ASM_ADD "%1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_SUB "%1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (l->a.counter)
+		     : "ir" (i));
+}
+
+static inline void local_add_unchecked(long i, local_unchecked_t *l)
+{
+	asm volatile(_ASM_ADD "%1,%0\n"
 		     : "+m" (l->a.counter)
 		     : "ir" (i));
 }
 
 static inline void local_sub(long i, local_t *l)
 {
-	asm volatile(_ASM_SUB "%1,%0"
+	asm volatile(_ASM_SUB "%1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_ADD "%1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+m" (l->a.counter)
+		     : "ir" (i));
+}
+
+static inline void local_sub_unchecked(long i, local_unchecked_t *l)
+{
+	asm volatile(_ASM_SUB "%1,%0\n"
 		     : "+m" (l->a.counter)
 		     : "ir" (i));
 }
@@ -52,7 +116,7 @@ static inline void local_sub(long i, local_t *l)
  */
 static inline int local_sub_and_test(long i, local_t *l)
 {
-	GEN_BINARY_RMWcc(_ASM_SUB, l->a.counter, "er", i, "%0", "e");
+	GEN_BINARY_RMWcc(_ASM_SUB, _ASM_ADD, l->a.counter, "er", i, "%0", "e");
 }
 
 /**
@@ -65,7 +129,7 @@ static inline int local_sub_and_test(long i, local_t *l)
  */
 static inline int local_dec_and_test(local_t *l)
 {
-	GEN_UNARY_RMWcc(_ASM_DEC, l->a.counter, "%0", "e");
+	GEN_UNARY_RMWcc(_ASM_DEC, _ASM_INC, l->a.counter, "%0", "e");
 }
 
 /**
@@ -78,7 +142,7 @@ static inline int local_dec_and_test(local_t *l)
  */
 static inline int local_inc_and_test(local_t *l)
 {
-	GEN_UNARY_RMWcc(_ASM_INC, l->a.counter, "%0", "e");
+	GEN_UNARY_RMWcc(_ASM_INC, _ASM_DEC, l->a.counter, "%0", "e");
 }
 
 /**
@@ -92,7 +156,7 @@ static inline int local_inc_and_test(local_t *l)
  */
 static inline int local_add_negative(long i, local_t *l)
 {
-	GEN_BINARY_RMWcc(_ASM_ADD, l->a.counter, "er", i, "%0", "s");
+	GEN_BINARY_RMWcc(_ASM_ADD, _ASM_SUB, l->a.counter, "er", i, "%0", "s");
 }
 
 /**
@@ -105,6 +169,30 @@ static inline int local_add_negative(long i, local_t *l)
 static inline long local_add_return(long i, local_t *l)
 {
 	long __i = i;
+	asm volatile(_ASM_XADD "%0, %1\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     _ASM_MOV "%0,%1\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
+		     : "+r" (i), "+m" (l->a.counter)
+		     : : "memory");
+	return i + __i;
+}
+
+/**
+ * local_add_return_unchecked - add and return
+ * @i: integer value to add
+ * @l: pointer to type local_unchecked_t
+ *
+ * Atomically adds @i to @l and returns @i + @l
+ */
+static inline long local_add_return_unchecked(long i, local_unchecked_t *l)
+{
+	long __i = i;
 	asm volatile(_ASM_XADD "%0, %1;"
 		     : "+r" (i), "+m" (l->a.counter)
 		     : : "memory");
@@ -121,6 +209,8 @@ static inline long local_sub_return(long i, local_t *l)
 
 #define local_cmpxchg(l, o, n) \
 	(cmpxchg_local(&((l)->a.counter), (o), (n)))
+#define local_cmpxchg_unchecked(l, o, n) \
+	(cmpxchg_local(&((l)->a.counter), (o), (n)))
 /* Always has a lock prefix */
 #define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))
 
diff --git a/arch/x86/include/asm/mman.h b/arch/x86/include/asm/mman.h
new file mode 100644
index 0000000..2bfd3ba
--- /dev/null
+++ b/arch/x86/include/asm/mman.h
@@ -0,0 +1,15 @@
+#ifndef _X86_MMAN_H
+#define _X86_MMAN_H
+
+#include <uapi/asm/mman.h>
+
+#ifdef __KERNEL__
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_X86_32
+#define arch_mmap_check	i386_mmap_check
+int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags);
+#endif
+#endif
+#endif
+
+#endif /* X86_MMAN_H */
diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
index 876e74e..e20bfb1 100644
--- a/arch/x86/include/asm/mmu.h
+++ b/arch/x86/include/asm/mmu.h
@@ -9,7 +9,7 @@
  * we put the segment information here.
  */
 typedef struct {
-	void *ldt;
+	struct desc_struct *ldt;
 	int size;
 
 #ifdef CONFIG_X86_64
@@ -18,7 +18,19 @@ typedef struct {
 #endif
 
 	struct mutex lock;
-	void __user *vdso;
+	unsigned long vdso;
+
+#ifdef CONFIG_X86_32
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+	unsigned long user_cs_base;
+	unsigned long user_cs_limit;
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
+	cpumask_t cpu_user_cs_mask;
+#endif
+
+#endif
+#endif
 } mm_context_t;
 
 #ifdef CONFIG_SMP
diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index be12c53..07fd3ca 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -24,6 +24,20 @@ void destroy_context(struct mm_struct *mm);
 
 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if (!(static_cpu_has(X86_FEATURE_PCID))) {
+		unsigned int i;
+		pgd_t *pgd;
+
+		pax_open_kernel();
+		pgd = get_cpu_pgd(smp_processor_id(), kernel);
+		for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i)
+			set_pgd_batched(pgd+i, native_make_pgd(0));
+		pax_close_kernel();
+	}
+#endif
+
 #ifdef CONFIG_SMP
 	if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK)
 		this_cpu_write(cpu_tlbstate.state, TLBSTATE_LAZY);
@@ -34,16 +48,59 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 			     struct task_struct *tsk)
 {
 	unsigned cpu = smp_processor_id();
+#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+	int tlbstate = TLBSTATE_OK;
+#endif
 
 	if (likely(prev != next)) {
 #ifdef CONFIG_SMP
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+		tlbstate = this_cpu_read(cpu_tlbstate.state);
+#endif
 		this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK);
 		this_cpu_write(cpu_tlbstate.active_mm, next);
 #endif
 		cpumask_set_cpu(cpu, mm_cpumask(next));
 
 		/* Re-load page tables */
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		pax_open_kernel();
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		if (static_cpu_has(X86_FEATURE_PCID))
+			__clone_user_pgds(get_cpu_pgd(cpu, user), next->pgd);
+		else
+#endif
+
+		__clone_user_pgds(get_cpu_pgd(cpu, kernel), next->pgd);
+		__shadow_user_pgds(get_cpu_pgd(cpu, kernel) + USER_PGD_PTRS, next->pgd);
+		pax_close_kernel();
+		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));
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		if (static_cpu_has(X86_FEATURE_PCID)) {
+			if (static_cpu_has(X86_FEATURE_INVPCID)) {
+				u64 descriptor[2];
+				descriptor[0] = PCID_USER;
+				asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
+				if (!static_cpu_has(X86_FEATURE_STRONGUDEREF)) {
+					descriptor[0] = PCID_KERNEL;
+					asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
+				}
+			} else {
+				write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER);
+				if (static_cpu_has(X86_FEATURE_STRONGUDEREF))
+					write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
+				else
+					write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL);
+			}
+		} else
+#endif
+
+			load_cr3(get_cpu_pgd(cpu, kernel));
+#else
 		load_cr3(next->pgd);
+#endif
 
 		/* Stop flush ipis for the previous mm */
 		cpumask_clear_cpu(cpu, mm_cpumask(prev));
@@ -51,9 +108,67 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 		/* Load the LDT, if the LDT is different: */
 		if (unlikely(prev->context.ldt != next->context.ldt))
 			load_LDT_nolock(&next->context);
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
+		if (!(__supported_pte_mask & _PAGE_NX)) {
+			smp_mb__before_atomic();
+			cpu_clear(cpu, prev->context.cpu_user_cs_mask);
+			smp_mb__after_atomic();
+			cpu_set(cpu, next->context.cpu_user_cs_mask);
+		}
+#endif
+
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+		if (unlikely(prev->context.user_cs_base != next->context.user_cs_base ||
+			     prev->context.user_cs_limit != next->context.user_cs_limit))
+			set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
+#ifdef CONFIG_SMP
+		else if (unlikely(tlbstate != TLBSTATE_OK))
+			set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
+#endif
+#endif
+
 	}
+	else {
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		pax_open_kernel();
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		if (static_cpu_has(X86_FEATURE_PCID))
+			__clone_user_pgds(get_cpu_pgd(cpu, user), next->pgd);
+		else
+#endif
+
+		__clone_user_pgds(get_cpu_pgd(cpu, kernel), next->pgd);
+		__shadow_user_pgds(get_cpu_pgd(cpu, kernel) + USER_PGD_PTRS, next->pgd);
+		pax_close_kernel();
+		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));
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		if (static_cpu_has(X86_FEATURE_PCID)) {
+			if (static_cpu_has(X86_FEATURE_INVPCID)) {
+				u64 descriptor[2];
+				descriptor[0] = PCID_USER;
+				asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
+				if (!static_cpu_has(X86_FEATURE_STRONGUDEREF)) {
+					descriptor[0] = PCID_KERNEL;
+					asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
+				}
+			} else {
+				write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER);
+				if (static_cpu_has(X86_FEATURE_STRONGUDEREF))
+					write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
+				else
+					write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL);
+			}
+		} else
+#endif
+
+			load_cr3(get_cpu_pgd(cpu, kernel));
+#endif
+
 #ifdef CONFIG_SMP
-	  else {
 		this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK);
 		BUG_ON(this_cpu_read(cpu_tlbstate.active_mm) != next);
 
@@ -70,11 +185,28 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 			 * tlb flush IPI delivery. We must reload CR3
 			 * to make sure to use no freed page tables.
 			 */
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 			load_cr3(next->pgd);
+#endif
+
 			load_LDT_nolock(&next->context);
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+			if (!(__supported_pte_mask & _PAGE_NX))
+				cpu_set(cpu, next->context.cpu_user_cs_mask);
+#endif
+
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
+#ifdef CONFIG_PAX_PAGEEXEC
+			if (!((next->pax_flags & MF_PAX_PAGEEXEC) && (__supported_pte_mask & _PAGE_NX)))
+#endif
+				set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
+#endif
+
 		}
+#endif
 	}
-#endif
 }
 
 #define activate_mm(prev, next)			\
diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h
index e3b7819..b257c64 100644
--- a/arch/x86/include/asm/module.h
+++ b/arch/x86/include/asm/module.h
@@ -5,6 +5,7 @@
 
 #ifdef CONFIG_X86_64
 /* X86_64 does not define MODULE_PROC_FAMILY */
+#define MODULE_PROC_FAMILY ""
 #elif defined CONFIG_M486
 #define MODULE_PROC_FAMILY "486 "
 #elif defined CONFIG_M586
@@ -57,8 +58,20 @@
 #error unknown processor family
 #endif
 
-#ifdef CONFIG_X86_32
-# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS
+#define MODULE_PAX_KERNEXEC "KERNEXEC_BTS "
+#elif defined(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR)
+#define MODULE_PAX_KERNEXEC "KERNEXEC_OR "
+#else
+#define MODULE_PAX_KERNEXEC ""
 #endif
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#define MODULE_PAX_UDEREF "UDEREF "
+#else
+#define MODULE_PAX_UDEREF ""
+#endif
+
+#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF
+
 #endif /* _ASM_X86_MODULE_H */
diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h
index 5f2fc44..106caa6 100644
--- a/arch/x86/include/asm/nmi.h
+++ b/arch/x86/include/asm/nmi.h
@@ -36,26 +36,35 @@ enum {
 
 typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
 
+struct nmiaction;
+
+struct nmiwork {
+	const struct nmiaction	*action;
+	u64			max_duration;
+	struct irq_work		irq_work;
+};
+
 struct nmiaction {
 	struct list_head	list;
 	nmi_handler_t		handler;
-	u64			max_duration;
-	struct irq_work		irq_work;
 	unsigned long		flags;
 	const char		*name;
-};
+	struct nmiwork		*work;
+} __do_const;
 
 #define register_nmi_handler(t, fn, fg, n, init...)	\
 ({							\
-	static struct nmiaction init fn##_na = {	\
+	static struct nmiwork fn##_nw;			\
+	static const struct nmiaction init fn##_na = {	\
 		.handler = (fn),			\
 		.name = (n),				\
 		.flags = (fg),				\
+		.work = &fn##_nw,			\
 	};						\
 	__register_nmi_handler((t), &fn##_na);		\
 })
 
-int __register_nmi_handler(unsigned int, struct nmiaction *);
+int __register_nmi_handler(unsigned int, const struct nmiaction *);
 
 void unregister_nmi_handler(unsigned int, const char *);
 
diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
index 775873d..04cd306 100644
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -52,6 +52,7 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
 	__phys_addr_symbol(__phys_reloc_hide((unsigned long)(x)))
 
 #define __va(x)			((void *)((unsigned long)(x)+PAGE_OFFSET))
+#define __early_va(x)		((void *)((unsigned long)(x)+__START_KERNEL_map - phys_base))
 
 #define __boot_va(x)		__va(x)
 #define __boot_pa(x)		__pa(x)
@@ -60,11 +61,21 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
  * virt_to_page(kaddr) returns a valid pointer if and only if
  * virt_addr_valid(kaddr) returns true.
  */
-#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
 extern bool __virt_addr_valid(unsigned long kaddr);
 #define virt_addr_valid(kaddr)	__virt_addr_valid((unsigned long) (kaddr))
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+#define virt_to_page(kaddr)	\
+	({ \
+		const void *__kaddr = (const void *)(kaddr); \
+		BUG_ON(!virt_addr_valid(__kaddr)); \
+		pfn_to_page(__pa(__kaddr) >> PAGE_SHIFT); \
+	})
+#else
+#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#endif
+
 #endif	/* __ASSEMBLY__ */
 
 #include <asm-generic/memory_model.h>
diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h
index 0f1ddee..e2fc3d1 100644
--- a/arch/x86/include/asm/page_64.h
+++ b/arch/x86/include/asm/page_64.h
@@ -7,9 +7,9 @@
 
 /* duplicated to the one in bootmem.h */
 extern unsigned long max_pfn;
-extern unsigned long phys_base;
+extern const unsigned long phys_base;
 
-static inline unsigned long __phys_addr_nodebug(unsigned long x)
+static inline unsigned long __intentional_overflow(-1) __phys_addr_nodebug(unsigned long x)
 {
 	unsigned long y = x - __START_KERNEL_map;
 
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index cd6e1610..70f4418 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -560,7 +560,7 @@ static inline pmd_t __pmd(pmdval_t val)
 	return (pmd_t) { ret };
 }
 
-static inline pmdval_t pmd_val(pmd_t pmd)
+static inline __intentional_overflow(-1) pmdval_t pmd_val(pmd_t pmd)
 {
 	pmdval_t ret;
 
@@ -626,6 +626,18 @@ static inline void set_pgd(pgd_t *pgdp, pgd_t pgd)
 			    val);
 }
 
+static inline void set_pgd_batched(pgd_t *pgdp, pgd_t pgd)
+{
+	pgdval_t val = native_pgd_val(pgd);
+
+	if (sizeof(pgdval_t) > sizeof(long))
+		PVOP_VCALL3(pv_mmu_ops.set_pgd_batched, pgdp,
+			    val, (u64)val >> 32);
+	else
+		PVOP_VCALL2(pv_mmu_ops.set_pgd_batched, pgdp,
+			    val);
+}
+
 static inline void pgd_clear(pgd_t *pgdp)
 {
 	set_pgd(pgdp, __pgd(0));
@@ -710,6 +722,21 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
 	pv_mmu_ops.set_fixmap(idx, phys, flags);
 }
 
+#ifdef CONFIG_PAX_KERNEXEC
+static inline unsigned long pax_open_kernel(void)
+{
+	return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel);
+}
+
+static inline unsigned long pax_close_kernel(void)
+{
+	return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel);
+}
+#else
+static inline unsigned long pax_open_kernel(void) { return 0; }
+static inline unsigned long pax_close_kernel(void) { return 0; }
+#endif
+
 #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
 
 static __always_inline void __ticket_lock_spinning(struct arch_spinlock *lock,
@@ -906,7 +933,7 @@ extern void default_banner(void);
 
 #define PARA_PATCH(struct, off)        ((PARAVIRT_PATCH_##struct + (off)) / 4)
 #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4)
-#define PARA_INDIRECT(addr)	*%cs:addr
+#define PARA_INDIRECT(addr)	*%ss:addr
 #endif
 
 #define INTERRUPT_RETURN						\
@@ -981,6 +1008,21 @@ extern void default_banner(void);
 	PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit),	\
 		  CLBR_NONE,						\
 		  jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
+
+#define GET_CR0_INTO_RDI				\
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0);	\
+	mov %rax,%rdi
+
+#define SET_RDI_INTO_CR0				\
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0)
+
+#define GET_CR3_INTO_RDI				\
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3);	\
+	mov %rax,%rdi
+
+#define SET_RDI_INTO_CR3				\
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3)
+
 #endif	/* CONFIG_X86_32 */
 
 #endif /* __ASSEMBLY__ */
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 7549b8b..f0edfda 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -84,7 +84,7 @@ struct pv_init_ops {
 	 */
 	unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
 			  unsigned long addr, unsigned len);
-};
+} __no_const __no_randomize_layout;
 
 
 struct pv_lazy_ops {
@@ -92,13 +92,13 @@ struct pv_lazy_ops {
 	void (*enter)(void);
 	void (*leave)(void);
 	void (*flush)(void);
-};
+} __no_randomize_layout;
 
 struct pv_time_ops {
 	unsigned long long (*sched_clock)(void);
 	unsigned long long (*steal_clock)(int cpu);
 	unsigned long (*get_tsc_khz)(void);
-};
+} __no_const __no_randomize_layout;
 
 struct pv_cpu_ops {
 	/* hooks for various privileged instructions */
@@ -192,7 +192,7 @@ struct pv_cpu_ops {
 
 	void (*start_context_switch)(struct task_struct *prev);
 	void (*end_context_switch)(struct task_struct *next);
-};
+} __no_const __no_randomize_layout;
 
 struct pv_irq_ops {
 	/*
@@ -215,7 +215,7 @@ struct pv_irq_ops {
 #ifdef CONFIG_X86_64
 	void (*adjust_exception_frame)(void);
 #endif
-};
+} __no_randomize_layout;
 
 struct pv_apic_ops {
 #ifdef CONFIG_X86_LOCAL_APIC
@@ -223,7 +223,7 @@ struct pv_apic_ops {
 				 unsigned long start_eip,
 				 unsigned long start_esp);
 #endif
-};
+} __no_const __no_randomize_layout;
 
 struct pv_mmu_ops {
 	unsigned long (*read_cr2)(void);
@@ -313,6 +313,7 @@ struct pv_mmu_ops {
 	struct paravirt_callee_save make_pud;
 
 	void (*set_pgd)(pgd_t *pudp, pgd_t pgdval);
+	void (*set_pgd_batched)(pgd_t *pudp, pgd_t pgdval);
 #endif	/* PAGETABLE_LEVELS == 4 */
 #endif	/* PAGETABLE_LEVELS >= 3 */
 
@@ -324,7 +325,13 @@ struct pv_mmu_ops {
 	   an mfn.  We can tell which is which from the index. */
 	void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx,
 			   phys_addr_t phys, pgprot_t flags);
-};
+
+#ifdef CONFIG_PAX_KERNEXEC
+	unsigned long (*pax_open_kernel)(void);
+	unsigned long (*pax_close_kernel)(void);
+#endif
+
+} __no_randomize_layout;
 
 struct arch_spinlock;
 #ifdef CONFIG_SMP
@@ -336,11 +343,14 @@ typedef u16 __ticket_t;
 struct pv_lock_ops {
 	struct paravirt_callee_save lock_spinning;
 	void (*unlock_kick)(struct arch_spinlock *lock, __ticket_t ticket);
-};
+} __no_randomize_layout;
 
 /* This contains all the paravirt structures: we get a convenient
  * number for each function using the offset which we use to indicate
- * what to patch. */
+ * what to patch.
+ * shouldn't be randomized due to the "NEAT TRICK" in paravirt.c
+ */
+
 struct paravirt_patch_template {
 	struct pv_init_ops pv_init_ops;
 	struct pv_time_ops pv_time_ops;
@@ -349,7 +359,7 @@ struct paravirt_patch_template {
 	struct pv_apic_ops pv_apic_ops;
 	struct pv_mmu_ops pv_mmu_ops;
 	struct pv_lock_ops pv_lock_ops;
-};
+} __no_randomize_layout;
 
 extern struct pv_info pv_info;
 extern struct pv_init_ops pv_init_ops;
diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h
index c4412e9..90e88c5 100644
--- a/arch/x86/include/asm/pgalloc.h
+++ b/arch/x86/include/asm/pgalloc.h
@@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(struct mm_struct *mm,
 				       pmd_t *pmd, pte_t *pte)
 {
 	paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT);
+	set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE));
+}
+
+static inline void pmd_populate_user(struct mm_struct *mm,
+				       pmd_t *pmd, pte_t *pte)
+{
+	paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT);
 	set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE));
 }
 
@@ -108,12 +115,22 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
 
 #ifdef CONFIG_X86_PAE
 extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd);
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
+{
+	pud_populate(mm, pudp, pmd);
+}
 #else	/* !CONFIG_X86_PAE */
 static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
 {
 	paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
 	set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd)));
 }
+
+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
+{
+	paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
+	set_pud(pud, __pud(_KERNPG_TABLE | __pa(pmd)));
+}
 #endif	/* CONFIG_X86_PAE */
 
 #if PAGETABLE_LEVELS > 3
@@ -123,6 +140,12 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
 	set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
 }
 
+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
+{
+	paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT);
+	set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(pud)));
+}
+
 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
 {
 	return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
diff --git a/arch/x86/include/asm/pgtable-2level.h b/arch/x86/include/asm/pgtable-2level.h
index 206a87f..1623b06 100644
--- a/arch/x86/include/asm/pgtable-2level.h
+++ b/arch/x86/include/asm/pgtable-2level.h
@@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte)
 
 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
 {
+	pax_open_kernel();
 	*pmdp = pmd;
+	pax_close_kernel();
 }
 
 static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h
index 81bb91b..9392125 100644
--- a/arch/x86/include/asm/pgtable-3level.h
+++ b/arch/x86/include/asm/pgtable-3level.h
@@ -92,12 +92,16 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
 
 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
 {
+	pax_open_kernel();
 	set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd));
+	pax_close_kernel();
 }
 
 static inline void native_set_pud(pud_t *pudp, pud_t pud)
 {
+	pax_open_kernel();
 	set_64bit((unsigned long long *)(pudp), native_pud_val(pud));
+	pax_close_kernel();
 }
 
 /*
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index aa97a07..f169e5b 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -46,6 +46,7 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page);
 
 #ifndef __PAGETABLE_PUD_FOLDED
 #define set_pgd(pgdp, pgd)		native_set_pgd(pgdp, pgd)
+#define set_pgd_batched(pgdp, pgd)	native_set_pgd_batched(pgdp, pgd)
 #define pgd_clear(pgd)			native_pgd_clear(pgd)
 #endif
 
@@ -83,12 +84,51 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page);
 
 #define arch_end_context_switch(prev)	do {} while(0)
 
+#define pax_open_kernel()	native_pax_open_kernel()
+#define pax_close_kernel()	native_pax_close_kernel()
 #endif	/* CONFIG_PARAVIRT */
 
+#define  __HAVE_ARCH_PAX_OPEN_KERNEL
+#define  __HAVE_ARCH_PAX_CLOSE_KERNEL
+
+#ifdef CONFIG_PAX_KERNEXEC
+static inline unsigned long native_pax_open_kernel(void)
+{
+	unsigned long cr0;
+
+	preempt_disable();
+	barrier();
+	cr0 = read_cr0() ^ X86_CR0_WP;
+	BUG_ON(cr0 & X86_CR0_WP);
+	write_cr0(cr0);
+	return cr0 ^ X86_CR0_WP;
+}
+
+static inline unsigned long native_pax_close_kernel(void)
+{
+	unsigned long cr0;
+
+	cr0 = read_cr0() ^ X86_CR0_WP;
+	BUG_ON(!(cr0 & X86_CR0_WP));
+	write_cr0(cr0);
+	barrier();
+	preempt_enable_no_resched();
+	return cr0 ^ X86_CR0_WP;
+}
+#else
+static inline unsigned long native_pax_open_kernel(void) { return 0; }
+static inline unsigned long native_pax_close_kernel(void) { return 0; }
+#endif
+
 /*
  * The following only work if pte_present() is true.
  * Undefined behaviour if not..
  */
+static inline int pte_user(pte_t pte)
+{
+	return pte_val(pte) & _PAGE_USER;
+}
+
 static inline int pte_dirty(pte_t pte)
 {
 	return pte_flags(pte) & _PAGE_DIRTY;
@@ -155,6 +195,11 @@ static inline unsigned long pud_pfn(pud_t pud)
 	return (pud_val(pud) & PTE_PFN_MASK) >> PAGE_SHIFT;
 }
 
+static inline unsigned long pgd_pfn(pgd_t pgd)
+{
+	return (pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT;
+}
+
 #define pte_page(pte)	pfn_to_page(pte_pfn(pte))
 
 static inline int pmd_large(pmd_t pte)
@@ -208,9 +253,29 @@ static inline pte_t pte_wrprotect(pte_t pte)
 	return pte_clear_flags(pte, _PAGE_RW);
 }
 
+static inline pte_t pte_mkread(pte_t pte)
+{
+	return __pte(pte_val(pte) | _PAGE_USER);
+}
+
 static inline pte_t pte_mkexec(pte_t pte)
 {
-	return pte_clear_flags(pte, _PAGE_NX);
+#ifdef CONFIG_X86_PAE
+	if (__supported_pte_mask & _PAGE_NX)
+		return pte_clear_flags(pte, _PAGE_NX);
+	else
+#endif
+		return pte_set_flags(pte, _PAGE_USER);
+}
+
+static inline pte_t pte_exprotect(pte_t pte)
+{
+#ifdef CONFIG_X86_PAE
+	if (__supported_pte_mask & _PAGE_NX)
+		return pte_set_flags(pte, _PAGE_NX);
+	else
+#endif
+		return pte_clear_flags(pte, _PAGE_USER);
 }
 
 static inline pte_t pte_mkdirty(pte_t pte)
@@ -440,6 +505,16 @@ pte_t *populate_extra_pte(unsigned long vaddr);
 #endif
 
 #ifndef __ASSEMBLY__
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+extern pgd_t cpu_pgd[NR_CPUS][2][PTRS_PER_PGD];
+enum cpu_pgd_type {kernel = 0, user = 1};
+static inline pgd_t *get_cpu_pgd(unsigned int cpu, enum cpu_pgd_type type)
+{
+	return cpu_pgd[cpu][type];
+}
+#endif
+
 #include <linux/mm_types.h>
 #include <linux/mmdebug.h>
 #include <linux/log2.h>
@@ -586,7 +661,7 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
  * Currently stuck as a macro due to indirect forward reference to
  * linux/mmzone.h's __section_mem_map_addr() definition:
  */
-#define pud_page(pud)		pfn_to_page(pud_val(pud) >> PAGE_SHIFT)
+#define pud_page(pud)		pfn_to_page((pud_val(pud) & PTE_PFN_MASK) >> PAGE_SHIFT)
 
 /* Find an entry in the second-level page table.. */
 static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
@@ -626,7 +701,7 @@ static inline unsigned long pgd_page_vaddr(pgd_t pgd)
  * Currently stuck as a macro due to indirect forward reference to
  * linux/mmzone.h's __section_mem_map_addr() definition:
  */
-#define pgd_page(pgd)		pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT)
+#define pgd_page(pgd)		pfn_to_page((pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT)
 
 /* to find an entry in a page-table-directory. */
 static inline unsigned long pud_index(unsigned long address)
@@ -641,7 +716,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
 
 static inline int pgd_bad(pgd_t pgd)
 {
-	return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE;
+	return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE;
 }
 
 static inline int pgd_none(pgd_t pgd)
@@ -664,7 +739,12 @@ static inline int pgd_none(pgd_t pgd)
  * pgd_offset() returns a (pgd_t *)
  * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
  */
-#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address)))
+#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+#define pgd_offset_cpu(cpu, type, address) (get_cpu_pgd(cpu, type) + pgd_index(address))
+#endif
+
 /*
  * a shortcut which implies the use of the kernel's pgd, instead
  * of a process's
@@ -675,6 +755,23 @@ static inline int pgd_none(pgd_t pgd)
 #define KERNEL_PGD_BOUNDARY	pgd_index(PAGE_OFFSET)
 #define KERNEL_PGD_PTRS		(PTRS_PER_PGD - KERNEL_PGD_BOUNDARY)
 
+#ifdef CONFIG_X86_32
+#define USER_PGD_PTRS		KERNEL_PGD_BOUNDARY
+#else
+#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT
+#define USER_PGD_PTRS		(_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT))
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#ifdef __ASSEMBLY__
+#define pax_user_shadow_base	pax_user_shadow_base(%rip)
+#else
+extern unsigned long pax_user_shadow_base;
+extern pgdval_t clone_pgd_mask;
+#endif
+#endif
+
+#endif
+
 #ifndef __ASSEMBLY__
 
 extern int direct_gbpages;
@@ -841,11 +938,24 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
  * dst and src can be on the same page, but the range must not overlap,
  * and must not cross a page boundary.
  */
-static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
+static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count)
 {
-       memcpy(dst, src, count * sizeof(pgd_t));
+	pax_open_kernel();
+	while (count--)
+		*dst++ = *src++;
+	pax_close_kernel();
 }
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src);
+#endif
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src);
+#else
+static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) {}
+#endif
+
 #define PTE_SHIFT ilog2(PTRS_PER_PTE)
 static inline int page_level_shift(enum pg_level level)
 {
diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h
index 9ee3221..b979c6b 100644
--- a/arch/x86/include/asm/pgtable_32.h
+++ b/arch/x86/include/asm/pgtable_32.h
@@ -25,9 +25,6 @@
 struct mm_struct;
 struct vm_area_struct;
 
-extern pgd_t swapper_pg_dir[1024];
-extern pgd_t initial_page_table[1024];
-
 static inline void pgtable_cache_init(void) { }
 static inline void check_pgt_cache(void) { }
 void paging_init(void);
@@ -48,6 +45,12 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t);
 # include <asm/pgtable-2level.h>
 #endif
 
+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
+extern pgd_t initial_page_table[PTRS_PER_PGD];
+#ifdef CONFIG_X86_PAE
+extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD];
+#endif
+
 #if defined(CONFIG_HIGHPTE)
 #define pte_offset_map(dir, address)					\
 	((pte_t *)kmap_atomic(pmd_page(*(dir))) +		\
@@ -62,12 +65,17 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t);
 /* Clear a kernel PTE and flush it from the TLB */
 #define kpte_clear_flush(ptep, vaddr)		\
 do {						\
+	pax_open_kernel();			\
 	pte_clear(&init_mm, (vaddr), (ptep));	\
+	pax_close_kernel();			\
 	__flush_tlb_one((vaddr));		\
 } while (0)
 
 #endif /* !__ASSEMBLY__ */
 
+#define HAVE_ARCH_UNMAPPED_AREA
+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
+
 /*
  * kern_addr_valid() is (1) for FLATMEM and (0) for
  * SPARSEMEM and DISCONTIGMEM
diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h
index ed5903b..c7fe163 100644
--- a/arch/x86/include/asm/pgtable_32_types.h
+++ b/arch/x86/include/asm/pgtable_32_types.h
@@ -8,7 +8,7 @@
  */
 #ifdef CONFIG_X86_PAE
 # include <asm/pgtable-3level_types.h>
-# define PMD_SIZE	(1UL << PMD_SHIFT)
+# define PMD_SIZE	(_AC(1, UL) << PMD_SHIFT)
 # define PMD_MASK	(~(PMD_SIZE - 1))
 #else
 # include <asm/pgtable-2level_types.h>
@@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set once high_memory is set */
 # define VMALLOC_END	(FIXADDR_START - 2 * PAGE_SIZE)
 #endif
 
+#ifdef CONFIG_PAX_KERNEXEC
+#ifndef __ASSEMBLY__
+extern unsigned char MODULES_EXEC_VADDR[];
+extern unsigned char MODULES_EXEC_END[];
+#endif
+#include <asm/boot.h>
+#define ktla_ktva(addr)		(addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET)
+#define ktva_ktla(addr)		(addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET)
+#else
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+#endif
+
 #define MODULES_VADDR	VMALLOC_START
 #define MODULES_END	VMALLOC_END
 #define MODULES_LEN	(MODULES_VADDR - MODULES_END)
diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
index 5be9063..d62185b 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -16,10 +16,14 @@
 
 extern pud_t level3_kernel_pgt[512];
 extern pud_t level3_ident_pgt[512];
+extern pud_t level3_vmalloc_start_pgt[512];
+extern pud_t level3_vmalloc_end_pgt[512];
+extern pud_t level3_vmemmap_pgt[512];
+extern pud_t level2_vmemmap_pgt[512];
 extern pmd_t level2_kernel_pgt[512];
 extern pmd_t level2_fixmap_pgt[512];
-extern pmd_t level2_ident_pgt[512];
-extern pgd_t init_level4_pgt[];
+extern pmd_t level2_ident_pgt[512*2];
+extern pgd_t init_level4_pgt[512];
 
 #define swapper_pg_dir init_level4_pgt
 
@@ -61,7 +65,9 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
 
 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
 {
+	pax_open_kernel();
 	*pmdp = pmd;
+	pax_close_kernel();
 }
 
 static inline void native_pmd_clear(pmd_t *pmd)
@@ -97,7 +103,9 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
 
 static inline void native_set_pud(pud_t *pudp, pud_t pud)
 {
+	pax_open_kernel();
 	*pudp = pud;
+	pax_close_kernel();
 }
 
 static inline void native_pud_clear(pud_t *pud)
@@ -107,6 +115,13 @@ static inline void native_pud_clear(pud_t *pud)
 
 static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
 {
+	pax_open_kernel();
+	*pgdp = pgd;
+	pax_close_kernel();
+}
+
+static inline void native_set_pgd_batched(pgd_t *pgdp, pgd_t pgd)
+{
 	*pgdp = pgd;
 }
 
diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h
index 7166e25..baaa6fe 100644
--- a/arch/x86/include/asm/pgtable_64_types.h
+++ b/arch/x86/include/asm/pgtable_64_types.h
@@ -61,9 +61,14 @@ typedef struct { pteval_t pte; } pte_t;
 #define MODULES_VADDR    (__START_KERNEL_map + KERNEL_IMAGE_SIZE)
 #define MODULES_END      _AC(0xffffffffff000000, UL)
 #define MODULES_LEN   (MODULES_END - MODULES_VADDR)
+#define MODULES_EXEC_VADDR MODULES_VADDR
+#define MODULES_EXEC_END MODULES_END
 #define ESPFIX_PGD_ENTRY _AC(-2, UL)
 #define ESPFIX_BASE_ADDR (ESPFIX_PGD_ENTRY << PGDIR_SHIFT)
 
+#define ktla_ktva(addr)		(addr)
+#define ktva_ktla(addr)		(addr)
+
 #define EARLY_DYNAMIC_PAGE_TABLES	64
 
 #endif /* _ASM_X86_PGTABLE_64_DEFS_H */
diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
index f216963..6bd7c21 100644
--- a/arch/x86/include/asm/pgtable_types.h
+++ b/arch/x86/include/asm/pgtable_types.h
@@ -111,8 +111,10 @@
 
 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 #define _PAGE_NX	(_AT(pteval_t, 1) << _PAGE_BIT_NX)
-#else
+#elif defined(CONFIG_KMEMCHECK) || defined(CONFIG_MEM_SOFT_DIRTY)
 #define _PAGE_NX	(_AT(pteval_t, 0))
+#else
+#define _PAGE_NX	(_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
 #endif
 
 #define _PAGE_FILE	(_AT(pteval_t, 1) << _PAGE_BIT_FILE)
@@ -151,6 +153,9 @@
 #define PAGE_READONLY_EXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER |	\
 					 _PAGE_ACCESSED)
 
+#define PAGE_READONLY_NOEXEC PAGE_READONLY
+#define PAGE_SHARED_NOEXEC PAGE_SHARED
+
 #define __PAGE_KERNEL_EXEC						\
 	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
 #define __PAGE_KERNEL		(__PAGE_KERNEL_EXEC | _PAGE_NX)
@@ -161,7 +166,7 @@
 #define __PAGE_KERNEL_WC		(__PAGE_KERNEL | _PAGE_CACHE_WC)
 #define __PAGE_KERNEL_NOCACHE		(__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_UC_MINUS		(__PAGE_KERNEL | _PAGE_PCD)
-#define __PAGE_KERNEL_VSYSCALL		(__PAGE_KERNEL_RX | _PAGE_USER)
+#define __PAGE_KERNEL_VSYSCALL		(__PAGE_KERNEL_RO | _PAGE_USER)
 #define __PAGE_KERNEL_VVAR		(__PAGE_KERNEL_RO | _PAGE_USER)
 #define __PAGE_KERNEL_VVAR_NOCACHE	(__PAGE_KERNEL_VVAR | _PAGE_PCD | _PAGE_PWT)
 #define __PAGE_KERNEL_LARGE		(__PAGE_KERNEL | _PAGE_PSE)
@@ -218,7 +223,7 @@
 #ifdef CONFIG_X86_64
 #define __PAGE_KERNEL_IDENT_LARGE_EXEC	__PAGE_KERNEL_LARGE_EXEC
 #else
-#define PTE_IDENT_ATTR	 0x003		/* PRESENT+RW */
+#define PTE_IDENT_ATTR	 0x063		/* PRESENT+RW+DIRTY+ACCESSED */
 #define PDE_IDENT_ATTR	 0x063		/* PRESENT+RW+DIRTY+ACCESSED */
 #define PGD_IDENT_ATTR	 0x001		/* PRESENT (no other attributes) */
 #endif
@@ -257,7 +262,17 @@ static inline pgdval_t pgd_flags(pgd_t pgd)
 {
 	return native_pgd_val(pgd) & PTE_FLAGS_MASK;
 }
+#endif
 
+#if PAGETABLE_LEVELS == 3
+#include <asm-generic/pgtable-nopud.h>
+#endif
+
+#if PAGETABLE_LEVELS == 2
+#include <asm-generic/pgtable-nopmd.h>
+#endif
+
+#ifndef __ASSEMBLY__
 #if PAGETABLE_LEVELS > 3
 typedef struct { pudval_t pud; } pud_t;
 
@@ -271,8 +286,6 @@ static inline pudval_t native_pud_val(pud_t pud)
 	return pud.pud;
 }
 #else
-#include <asm-generic/pgtable-nopud.h>
-
 static inline pudval_t native_pud_val(pud_t pud)
 {
 	return native_pgd_val(pud.pgd);
@@ -292,8 +305,6 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
 	return pmd.pmd;
 }
 #else
-#include <asm-generic/pgtable-nopmd.h>
-
 static inline pmdval_t native_pmd_val(pmd_t pmd)
 {
 	return native_pgd_val(pmd.pud.pgd);
@@ -333,7 +344,6 @@ typedef struct page *pgtable_t;
 
 extern pteval_t __supported_pte_mask;
 extern void set_nx(void);
-extern int nx_enabled;
 
 #define pgprot_writecombine	pgprot_writecombine
 extern pgprot_t pgprot_writecombine(pgprot_t prot);
diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
index 7024c12..71c46b9 100644
--- a/arch/x86/include/asm/preempt.h
+++ b/arch/x86/include/asm/preempt.h
@@ -87,7 +87,7 @@ static __always_inline void __preempt_count_sub(int val)
  */
 static __always_inline bool __preempt_count_dec_and_test(void)
 {
-	GEN_UNARY_RMWcc("decl", __preempt_count, __percpu_arg(0), "e");
+	GEN_UNARY_RMWcc("decl", "incl", __preempt_count, __percpu_arg(0), "e");
 }
 
 /*
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index a4ea023..2ff3cb8 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -128,7 +128,7 @@ struct cpuinfo_x86 {
 	/* Index into per_cpu list: */
 	u16			cpu_index;
 	u32			microcode;
-} __attribute__((__aligned__(SMP_CACHE_BYTES)));
+} __attribute__((__aligned__(SMP_CACHE_BYTES))) __randomize_layout;
 
 #define X86_VENDOR_INTEL	0
 #define X86_VENDOR_CYRIX	1
@@ -199,9 +199,21 @@ static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
 	    : "memory");
 }
 
+/* invpcid (%rdx),%rax */
+#define __ASM_INVPCID ".byte 0x66,0x0f,0x38,0x82,0x02"
+
+#define INVPCID_SINGLE_ADDRESS	0UL
+#define INVPCID_SINGLE_CONTEXT	1UL
+#define INVPCID_ALL_GLOBAL	2UL
+#define INVPCID_ALL_NONGLOBAL	3UL
+
+#define PCID_KERNEL		0UL
+#define PCID_USER		1UL
+#define PCID_NOFLUSH		(1UL << 63)
+
 static inline void load_cr3(pgd_t *pgdir)
 {
-	write_cr3(__pa(pgdir));
+	write_cr3(__pa(pgdir) | PCID_KERNEL);
 }
 
 #ifdef CONFIG_X86_32
@@ -283,7 +295,7 @@ struct tss_struct {
 
 } ____cacheline_aligned;
 
-DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss);
+extern struct tss_struct init_tss[NR_CPUS];
 
 /*
  * Save the original ist values for checking stack pointers during debugging
@@ -479,6 +491,7 @@ struct thread_struct {
 	unsigned short		ds;
 	unsigned short		fsindex;
 	unsigned short		gsindex;
+	unsigned short		ss;
 #endif
 #ifdef CONFIG_X86_32
 	unsigned long		ip;
@@ -588,29 +601,8 @@ static inline void load_sp0(struct tss_struct *tss,
 extern unsigned long mmu_cr4_features;
 extern u32 *trampoline_cr4_features;
 
-static inline void set_in_cr4(unsigned long mask)
-{
-	unsigned long cr4;
-
-	mmu_cr4_features |= mask;
-	if (trampoline_cr4_features)
-		*trampoline_cr4_features = mmu_cr4_features;
-	cr4 = read_cr4();
-	cr4 |= mask;
-	write_cr4(cr4);
-}
-
-static inline void clear_in_cr4(unsigned long mask)
-{
-	unsigned long cr4;
-
-	mmu_cr4_features &= ~mask;
-	if (trampoline_cr4_features)
-		*trampoline_cr4_features = mmu_cr4_features;
-	cr4 = read_cr4();
-	cr4 &= ~mask;
-	write_cr4(cr4);
-}
+extern void set_in_cr4(unsigned long mask);
+extern void clear_in_cr4(unsigned long mask);
 
 typedef struct {
 	unsigned long		seg;
@@ -836,11 +828,18 @@ static inline void spin_lock_prefetch(const void *x)
  */
 #define TASK_SIZE		PAGE_OFFSET
 #define TASK_SIZE_MAX		TASK_SIZE
+
+#ifdef CONFIG_PAX_SEGMEXEC
+#define SEGMEXEC_TASK_SIZE	(TASK_SIZE / 2)
+#define STACK_TOP		((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
+#else
 #define STACK_TOP		TASK_SIZE
-#define STACK_TOP_MAX		STACK_TOP
+#endif
+
+#define STACK_TOP_MAX		TASK_SIZE
 
 #define INIT_THREAD  {							  \
-	.sp0			= sizeof(init_stack) + (long)&init_stack, \
+	.sp0			= sizeof(init_stack) + (long)&init_stack - 8, \
 	.vm86_info		= NULL,					  \
 	.sysenter_cs		= __KERNEL_CS,				  \
 	.io_bitmap_ptr		= NULL,					  \
@@ -854,7 +853,7 @@ static inline void spin_lock_prefetch(const void *x)
  */
 #define INIT_TSS  {							  \
 	.x86_tss = {							  \
-		.sp0		= sizeof(init_stack) + (long)&init_stack, \
+		.sp0		= sizeof(init_stack) + (long)&init_stack - 8, \
 		.ss0		= __KERNEL_DS,				  \
 		.ss1		= __KERNEL_CS,				  \
 		.io_bitmap_base	= INVALID_IO_BITMAP_OFFSET,		  \
@@ -865,11 +864,7 @@ static inline void spin_lock_prefetch(const void *x)
 extern unsigned long thread_saved_pc(struct task_struct *tsk);
 
 #define THREAD_SIZE_LONGS      (THREAD_SIZE/sizeof(unsigned long))
-#define KSTK_TOP(info)                                                 \
-({                                                                     \
-       unsigned long *__ptr = (unsigned long *)(info);                 \
-       (unsigned long)(&__ptr[THREAD_SIZE_LONGS]);                     \
-})
+#define KSTK_TOP(info)         ((container_of(info, struct task_struct, tinfo))->thread.sp0)
 
 /*
  * The below -8 is to reserve 8 bytes on top of the ring0 stack.
@@ -884,7 +879,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
 #define task_pt_regs(task)                                             \
 ({                                                                     \
        struct pt_regs *__regs__;                                       \
-       __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \
+       __regs__ = (struct pt_regs *)((task)->thread.sp0);              \
        __regs__ - 1;                                                   \
 })
 
@@ -894,13 +889,13 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
 /*
  * User space process size. 47bits minus one guard page.
  */
-#define TASK_SIZE_MAX	((1UL << 47) - PAGE_SIZE)
+#define TASK_SIZE_MAX	((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE)
 
 /* This decides where the kernel will search for a free chunk of vm
  * space during mmap's.
  */
 #define IA32_PAGE_OFFSET	((current->personality & ADDR_LIMIT_3GB) ? \
-					0xc0000000 : 0xFFFFe000)
+					0xc0000000 : 0xFFFFf000)
 
 #define TASK_SIZE		(test_thread_flag(TIF_ADDR32) ? \
 					IA32_PAGE_OFFSET : TASK_SIZE_MAX)
@@ -911,11 +906,11 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
 #define STACK_TOP_MAX		TASK_SIZE_MAX
 
 #define INIT_THREAD  { \
-	.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
+	.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \
 }
 
 #define INIT_TSS  { \
-	.x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
+	.x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \
 }
 
 /*
@@ -943,6 +938,10 @@ extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
  */
 #define TASK_UNMAPPED_BASE	(PAGE_ALIGN(TASK_SIZE / 3))
 
+#ifdef CONFIG_PAX_SEGMEXEC
+#define SEGMEXEC_TASK_UNMAPPED_BASE	(PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3))
+#endif
+
 #define KSTK_EIP(task)		(task_pt_regs(task)->ip)
 
 /* Get/set a process' ability to use the timestamp counter instruction */
@@ -969,7 +968,7 @@ static inline uint32_t hypervisor_cpuid_base(const char *sig, uint32_t leaves)
 	return 0;
 }
 
-extern unsigned long arch_align_stack(unsigned long sp);
+#define arch_align_stack(x) ((x) & ~0xfUL)
 extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
 
 void default_idle(void);
@@ -979,6 +978,6 @@ bool xen_set_default_idle(void);
 #define xen_set_default_idle 0
 #endif
 
-void stop_this_cpu(void *dummy);
+void stop_this_cpu(void *dummy) __noreturn;
 void df_debug(struct pt_regs *regs, long error_code);
 #endif /* _ASM_X86_PROCESSOR_H */
diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 6205f0c..688a3a9 100644
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -84,28 +84,29 @@ static inline unsigned long regs_return_value(struct pt_regs *regs)
 }
 
 /*
- * user_mode_vm(regs) determines whether a register set came from user mode.
+ * user_mode(regs) determines whether a register set came from user mode.
  * This is true if V8086 mode was enabled OR if the register set was from
  * protected mode with RPL-3 CS value.  This tricky test checks that with
  * one comparison.  Many places in the kernel can bypass this full check
- * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
+ * if they have already ruled out V8086 mode, so user_mode_novm(regs) can
+ * be used.
  */
-static inline int user_mode(struct pt_regs *regs)
+static inline int user_mode_novm(struct pt_regs *regs)
 {
 #ifdef CONFIG_X86_32
 	return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL;
 #else
-	return !!(regs->cs & 3);
+	return !!(regs->cs & SEGMENT_RPL_MASK);
 #endif
 }
 
-static inline int user_mode_vm(struct pt_regs *regs)
+static inline int user_mode(struct pt_regs *regs)
 {
 #ifdef CONFIG_X86_32
 	return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >=
 		USER_RPL;
 #else
-	return user_mode(regs);
+	return user_mode_novm(regs);
 #endif
 }
 
@@ -121,15 +122,16 @@ static inline int v8086_mode(struct pt_regs *regs)
 #ifdef CONFIG_X86_64
 static inline bool user_64bit_mode(struct pt_regs *regs)
 {
+	unsigned long cs = regs->cs & 0xffff;
 #ifndef CONFIG_PARAVIRT
 	/*
 	 * On non-paravirt systems, this is the only long mode CPL 3
 	 * selector.  We do not allow long mode selectors in the LDT.
 	 */
-	return regs->cs == __USER_CS;
+	return cs == __USER_CS;
 #else
 	/* Headers are too twisted for this to go in paravirt.h. */
-	return regs->cs == __USER_CS || regs->cs == pv_info.extra_user_64bit_cs;
+	return cs == __USER_CS || cs == pv_info.extra_user_64bit_cs;
 #endif
 }
 
@@ -180,9 +182,11 @@ static inline unsigned long regs_get_register(struct pt_regs *regs,
 	 * Traps from the kernel do not save sp and ss.
 	 * Use the helper function to retrieve sp.
 	 */
-	if (offset == offsetof(struct pt_regs, sp) &&
-	    regs->cs == __KERNEL_CS)
-		return kernel_stack_pointer(regs);
+	if (offset == offsetof(struct pt_regs, sp)) {
+		unsigned long cs = regs->cs & 0xffff;
+		if (cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS)
+			return kernel_stack_pointer(regs);
+	}
 #endif
 	return *(unsigned long *)((unsigned long)regs + offset);
 }
diff --git a/arch/x86/include/asm/qrwlock.h b/arch/x86/include/asm/qrwlock.h
index 70f46f0..adfbdb4 100644
--- a/arch/x86/include/asm/qrwlock.h
+++ b/arch/x86/include/asm/qrwlock.h
@@ -7,8 +7,8 @@
 #define queue_write_unlock queue_write_unlock
 static inline void queue_write_unlock(struct qrwlock *lock)
 {
-        barrier();
-        ACCESS_ONCE(*(u8 *)&lock->cnts) = 0;
+	barrier();
+	ACCESS_ONCE_RW(*(u8 *)&lock->cnts) = 0;
 }
 #endif
 
diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h
index 9c6b890..5305f53 100644
--- a/arch/x86/include/asm/realmode.h
+++ b/arch/x86/include/asm/realmode.h
@@ -22,16 +22,14 @@ struct real_mode_header {
 #endif
 	/* APM/BIOS reboot */
 	u32	machine_real_restart_asm;
-#ifdef CONFIG_X86_64
 	u32	machine_real_restart_seg;
-#endif
 };
 
 /* This must match data at trampoline_32/64.S */
 struct trampoline_header {
 #ifdef CONFIG_X86_32
 	u32 start;
-	u16 gdt_pad;
+	u16 boot_cs;
 	u16 gdt_limit;
 	u32 gdt_base;
 #else
diff --git a/arch/x86/include/asm/reboot.h b/arch/x86/include/asm/reboot.h
index a82c4f1..ac45053 100644
--- a/arch/x86/include/asm/reboot.h
+++ b/arch/x86/include/asm/reboot.h
@@ -6,13 +6,13 @@
 struct pt_regs;
 
 struct machine_ops {
-	void (*restart)(char *cmd);
-	void (*halt)(void);
-	void (*power_off)(void);
+	void (* __noreturn restart)(char *cmd);
+	void (* __noreturn halt)(void);
+	void (* __noreturn power_off)(void);
 	void (*shutdown)(void);
 	void (*crash_shutdown)(struct pt_regs *);
-	void (*emergency_restart)(void);
-};
+	void (* __noreturn emergency_restart)(void);
+} __no_const;
 
 extern struct machine_ops machine_ops;
 
diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h
index 8f7866a..e442f20 100644
--- a/arch/x86/include/asm/rmwcc.h
+++ b/arch/x86/include/asm/rmwcc.h
@@ -3,7 +3,34 @@
 
 #ifdef CC_HAVE_ASM_GOTO
 
-#define __GEN_RMWcc(fullop, var, cc, ...)				\
+#ifdef CONFIG_PAX_REFCOUNT
+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...)			\
+do {									\
+	asm_volatile_goto (fullop					\
+			";jno 0f\n"					\
+			fullantiop					\
+			";int $4\n0:\n"					\
+			_ASM_EXTABLE(0b, 0b)				\
+			 ";j" cc " %l[cc_label]"			\
+			: : "m" (var), ## __VA_ARGS__ 			\
+			: "memory" : cc_label);				\
+	return 0;							\
+cc_label:								\
+	return 1;							\
+} while (0)
+#else
+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...)			\
+do {									\
+	asm_volatile_goto (fullop ";j" cc " %l[cc_label]"		\
+			: : "m" (var), ## __VA_ARGS__ 			\
+			: "memory" : cc_label);				\
+	return 0;							\
+cc_label:								\
+	return 1;							\
+} while (0)
+#endif
+
+#define __GEN_RMWcc_unchecked(fullop, var, cc, ...)			\
 do {									\
 	asm_volatile_goto (fullop "; j" cc " %l[cc_label]"		\
 			: : "m" (var), ## __VA_ARGS__ 			\
@@ -13,15 +40,46 @@ cc_label:								\
 	return 1;							\
 } while (0)
 
-#define GEN_UNARY_RMWcc(op, var, arg0, cc) 				\
-	__GEN_RMWcc(op " " arg0, var, cc)
+#define GEN_UNARY_RMWcc(op, antiop, var, arg0, cc) 			\
+	__GEN_RMWcc(op " " arg0, antiop " " arg0, var, cc)
 
-#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)			\
-	__GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val))
+#define GEN_UNARY_RMWcc_unchecked(op, var, arg0, cc) 			\
+	__GEN_RMWcc_unchecked(op " " arg0, var, cc)
+
+#define GEN_BINARY_RMWcc(op, antiop, var, vcon, val, arg0, cc)		\
+	__GEN_RMWcc(op " %1, " arg0, antiop " %1, " arg0, var, cc, vcon (val))
+
+#define GEN_BINARY_RMWcc_unchecked(op, var, vcon, val, arg0, cc)	\
+	__GEN_RMWcc_unchecked(op " %1, " arg0, var, cc, vcon (val))
 
 #else /* !CC_HAVE_ASM_GOTO */
 
-#define __GEN_RMWcc(fullop, var, cc, ...)				\
+#ifdef CONFIG_PAX_REFCOUNT
+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...)			\
+do {									\
+	char c;								\
+	asm volatile (fullop 						\
+			";jno 0f\n"					\
+			fullantiop					\
+			";int $4\n0:\n"					\
+			_ASM_EXTABLE(0b, 0b)				\
+			"; set" cc " %1"				\
+			: "+m" (var), "=qm" (c)				\
+			: __VA_ARGS__ : "memory");			\
+	return c != 0;							\
+} while (0)
+#else
+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...)			\
+do {									\
+	char c;								\
+	asm volatile (fullop "; set" cc " %1"				\
+			: "+m" (var), "=qm" (c)				\
+			: __VA_ARGS__ : "memory");			\
+	return c != 0;							\
+} while (0)
+#endif
+
+#define __GEN_RMWcc_unchecked(fullop, var, cc, ...)			\
 do {									\
 	char c;								\
 	asm volatile (fullop "; set" cc " %1"				\
@@ -30,11 +88,17 @@ do {									\
 	return c != 0;							\
 } while (0)
 
-#define GEN_UNARY_RMWcc(op, var, arg0, cc)				\
-	__GEN_RMWcc(op " " arg0, var, cc)
+#define GEN_UNARY_RMWcc(op, antiop, var, arg0, cc)			\
+	__GEN_RMWcc(op " " arg0, antiop " " arg0, var, cc)
+
+#define GEN_UNARY_RMWcc_unchecked(op, var, arg0, cc)			\
+	__GEN_RMWcc_unchecked(op " " arg0, var, cc)
+
+#define GEN_BINARY_RMWcc(op, antiop, var, vcon, val, arg0, cc)		\
+	__GEN_RMWcc(op " %2, " arg0, antiop " %2, " arg0, var, cc, vcon (val))
 
-#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc)			\
-	__GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val))
+#define GEN_BINARY_RMWcc_unchecked(op, var, vcon, val, arg0, cc)	\
+	__GEN_RMWcc_unchecked(op " %2, " arg0, var, cc, vcon (val))
 
 #endif /* CC_HAVE_ASM_GOTO */
 
diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
index cad82c9..2e5c5c1 100644
--- a/arch/x86/include/asm/rwsem.h
+++ b/arch/x86/include/asm/rwsem.h
@@ -64,6 +64,14 @@ static inline void __down_read(struct rw_semaphore *sem)
 {
 	asm volatile("# beginning down_read\n\t"
 		     LOCK_PREFIX _ASM_INC "(%1)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX _ASM_DEC "(%1)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* adds 0x00000001 */
 		     "  jns        1f\n"
 		     "  call call_rwsem_down_read_failed\n"
@@ -85,6 +93,14 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
 		     "1:\n\t"
 		     "  mov          %1,%2\n\t"
 		     "  add          %3,%2\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "sub %3,%2\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     "  jle	     2f\n\t"
 		     LOCK_PREFIX "  cmpxchg  %2,%0\n\t"
 		     "  jnz	     1b\n\t"
@@ -104,6 +120,14 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
 	long tmp;
 	asm volatile("# beginning down_write\n\t"
 		     LOCK_PREFIX "  xadd      %1,(%2)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "mov %1,(%2)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* adds 0xffff0001, returns the old value */
 		     "  test " __ASM_SEL(%w1,%k1) "," __ASM_SEL(%w1,%k1) "\n\t"
 		     /* was the active mask 0 before? */
@@ -155,6 +179,14 @@ static inline void __up_read(struct rw_semaphore *sem)
 	long tmp;
 	asm volatile("# beginning __up_read\n\t"
 		     LOCK_PREFIX "  xadd      %1,(%2)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "mov %1,(%2)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* subtracts 1, returns the old value */
 		     "  jns        1f\n\t"
 		     "  call call_rwsem_wake\n" /* expects old value in %edx */
@@ -173,6 +205,14 @@ static inline void __up_write(struct rw_semaphore *sem)
 	long tmp;
 	asm volatile("# beginning __up_write\n\t"
 		     LOCK_PREFIX "  xadd      %1,(%2)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     "mov %1,(%2)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /* subtracts 0xffff0001, returns the old value */
 		     "  jns        1f\n\t"
 		     "  call call_rwsem_wake\n" /* expects old value in %edx */
@@ -190,6 +230,14 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
 {
 	asm volatile("# beginning __downgrade_write\n\t"
 		     LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX _ASM_SUB "%2,(%1)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     /*
 		      * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386)
 		      *     0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64)
@@ -208,7 +256,15 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
  */
 static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
 {
-	asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0"
+	asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX _ASM_SUB "%1,%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (sem->count)
 		     : "er" (delta));
 }
@@ -218,7 +274,7 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
  */
 static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
 {
-	return delta + xadd(&sem->count, delta);
+	return delta + xadd_check_overflow(&sem->count, delta);
 }
 
 #endif /* __KERNEL__ */
diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h
index 6f1c3a8..7744f19 100644
--- a/arch/x86/include/asm/segment.h
+++ b/arch/x86/include/asm/segment.h
@@ -64,10 +64,15 @@
  *  26 - ESPFIX small SS
  *  27 - per-cpu			[ offset to per-cpu data area ]
  *  28 - stack_canary-20		[ for stack protector ]
- *  29 - unused
- *  30 - unused
+ *  29 - PCI BIOS CS
+ *  30 - PCI BIOS DS
  *  31 - TSS for double fault handler
  */
+#define GDT_ENTRY_KERNEXEC_EFI_CS	(1)
+#define GDT_ENTRY_KERNEXEC_EFI_DS	(2)
+#define __KERNEXEC_EFI_CS	(GDT_ENTRY_KERNEXEC_EFI_CS*8)
+#define __KERNEXEC_EFI_DS	(GDT_ENTRY_KERNEXEC_EFI_DS*8)
+
 #define GDT_ENTRY_TLS_MIN	6
 #define GDT_ENTRY_TLS_MAX 	(GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
 
@@ -79,6 +84,8 @@
 
 #define GDT_ENTRY_KERNEL_CS		(GDT_ENTRY_KERNEL_BASE+0)
 
+#define GDT_ENTRY_KERNEXEC_KERNEL_CS	(4)
+
 #define GDT_ENTRY_KERNEL_DS		(GDT_ENTRY_KERNEL_BASE+1)
 
 #define GDT_ENTRY_TSS			(GDT_ENTRY_KERNEL_BASE+4)
@@ -104,6 +111,12 @@
 #define __KERNEL_STACK_CANARY		0
 #endif
 
+#define GDT_ENTRY_PCIBIOS_CS		(GDT_ENTRY_KERNEL_BASE+17)
+#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8)
+
+#define GDT_ENTRY_PCIBIOS_DS		(GDT_ENTRY_KERNEL_BASE+18)
+#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8)
+
 #define GDT_ENTRY_DOUBLEFAULT_TSS	31
 
 /*
@@ -141,7 +154,7 @@
  */
 
 /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */
-#define SEGMENT_IS_PNP_CODE(x)   (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8)
+#define SEGMENT_IS_PNP_CODE(x)   (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16)
 
 
 #else
@@ -165,6 +178,8 @@
 #define __USER32_CS   (GDT_ENTRY_DEFAULT_USER32_CS*8+3)
 #define __USER32_DS	__USER_DS
 
+#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7
+
 #define GDT_ENTRY_TSS 8	/* needs two entries */
 #define GDT_ENTRY_LDT 10 /* needs two entries */
 #define GDT_ENTRY_TLS_MIN 12
@@ -173,6 +188,8 @@
 #define GDT_ENTRY_PER_CPU 15	/* Abused to load per CPU data from limit */
 #define __PER_CPU_SEG	(GDT_ENTRY_PER_CPU * 8 + 3)
 
+#define GDT_ENTRY_UDEREF_KERNEL_DS 16
+
 /* TLS indexes for 64bit - hardcoded in arch_prctl */
 #define FS_TLS 0
 #define GS_TLS 1
@@ -180,12 +197,14 @@
 #define GS_TLS_SEL ((GDT_ENTRY_TLS_MIN+GS_TLS)*8 + 3)
 #define FS_TLS_SEL ((GDT_ENTRY_TLS_MIN+FS_TLS)*8 + 3)
 
-#define GDT_ENTRIES 16
+#define GDT_ENTRIES 17
 
 #endif
 
 #define __KERNEL_CS	(GDT_ENTRY_KERNEL_CS*8)
+#define __KERNEXEC_KERNEL_CS	(GDT_ENTRY_KERNEXEC_KERNEL_CS*8)
 #define __KERNEL_DS	(GDT_ENTRY_KERNEL_DS*8)
+#define __UDEREF_KERNEL_DS	(GDT_ENTRY_UDEREF_KERNEL_DS*8)
 #define __USER_DS	(GDT_ENTRY_DEFAULT_USER_DS*8+3)
 #define __USER_CS	(GDT_ENTRY_DEFAULT_USER_CS*8+3)
 #ifndef CONFIG_PARAVIRT
@@ -268,7 +287,7 @@ static inline unsigned long get_limit(unsigned long segment)
 {
 	unsigned long __limit;
 	asm("lsll %1,%0" : "=r" (__limit) : "r" (segment));
-	return __limit + 1;
+	return __limit;
 }
 
 #endif /* !__ASSEMBLY__ */
diff --git a/arch/x86/include/asm/smap.h b/arch/x86/include/asm/smap.h
index 8d3120f..352b440 100644
--- a/arch/x86/include/asm/smap.h
+++ b/arch/x86/include/asm/smap.h
@@ -25,11 +25,40 @@
 
 #include <asm/alternative-asm.h>
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define ASM_PAX_OPEN_USERLAND					\
+	661: jmp 663f;						\
+	.pushsection .altinstr_replacement, "a" ;		\
+	662: pushq %rax; nop;					\
+	.popsection ;						\
+	.pushsection .altinstructions, "a" ;			\
+	altinstruction_entry 661b, 662b, X86_FEATURE_STRONGUDEREF, 2, 2;\
+	.popsection ;						\
+	call __pax_open_userland;				\
+	popq %rax;						\
+	663:
+
+#define ASM_PAX_CLOSE_USERLAND					\
+	661: jmp 663f;						\
+	.pushsection .altinstr_replacement, "a" ;		\
+	662: pushq %rax; nop;					\
+	.popsection;						\
+	.pushsection .altinstructions, "a" ;			\
+	altinstruction_entry 661b, 662b, X86_FEATURE_STRONGUDEREF, 2, 2;\
+	.popsection;						\
+	call __pax_close_userland;				\
+	popq %rax;						\
+	663:
+#else
+#define ASM_PAX_OPEN_USERLAND
+#define ASM_PAX_CLOSE_USERLAND
+#endif
+
 #ifdef CONFIG_X86_SMAP
 
 #define ASM_CLAC							\
 	661: ASM_NOP3 ;							\
-	.pushsection .altinstr_replacement, "ax" ;			\
+	.pushsection .altinstr_replacement, "a" ;			\
 	662: __ASM_CLAC ;						\
 	.popsection ;							\
 	.pushsection .altinstructions, "a" ;				\
@@ -38,7 +67,7 @@
 
 #define ASM_STAC							\
 	661: ASM_NOP3 ;							\
-	.pushsection .altinstr_replacement, "ax" ;			\
+	.pushsection .altinstr_replacement, "a" ;			\
 	662: __ASM_STAC ;						\
 	.popsection ;							\
 	.pushsection .altinstructions, "a" ;				\
@@ -56,6 +85,37 @@
 
 #include <asm/alternative.h>
 
+#define __HAVE_ARCH_PAX_OPEN_USERLAND
+#define __HAVE_ARCH_PAX_CLOSE_USERLAND
+
+extern void __pax_open_userland(void);
+static __always_inline unsigned long pax_open_userland(void)
+{
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	asm volatile(ALTERNATIVE(ASM_NOP5, "call %P[open]", X86_FEATURE_STRONGUDEREF)
+		:
+		: [open] "i" (__pax_open_userland)
+		: "memory", "rax");
+#endif
+
+	return 0;
+}
+
+extern void __pax_close_userland(void);
+static __always_inline unsigned long pax_close_userland(void)
+{
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	asm volatile(ALTERNATIVE(ASM_NOP5, "call %P[close]", X86_FEATURE_STRONGUDEREF)
+		:
+		: [close] "i" (__pax_close_userland)
+		: "memory", "rax");
+#endif
+
+	return 0;
+}
+
 #ifdef CONFIG_X86_SMAP
 
 static __always_inline void clac(void)
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index 8cd27e0..7f05ec8 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -35,7 +35,7 @@ DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map);
 /* cpus sharing the last level cache: */
 DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
 DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id);
-DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
+DECLARE_PER_CPU_READ_MOSTLY(unsigned int, cpu_number);
 
 static inline struct cpumask *cpu_sibling_mask(int cpu)
 {
@@ -78,7 +78,7 @@ struct smp_ops {
 
 	void (*send_call_func_ipi)(const struct cpumask *mask);
 	void (*send_call_func_single_ipi)(int cpu);
-};
+} __no_const;
 
 /* Globals due to paravirt */
 extern void set_cpu_sibling_map(int cpu);
@@ -190,14 +190,8 @@ extern unsigned disabled_cpus;
 extern int safe_smp_processor_id(void);
 
 #elif defined(CONFIG_X86_64_SMP)
-#define raw_smp_processor_id() (this_cpu_read(cpu_number))
-
-#define stack_smp_processor_id()					\
-({								\
-	struct thread_info *ti;						\
-	__asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK));	\
-	ti->cpu;							\
-})
+#define raw_smp_processor_id()		(this_cpu_read(cpu_number))
+#define stack_smp_processor_id()	raw_smp_processor_id()
 #define safe_smp_processor_id()		smp_processor_id()
 
 #endif
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h
index 54f1c80..39362a5 100644
--- a/arch/x86/include/asm/spinlock.h
+++ b/arch/x86/include/asm/spinlock.h
@@ -223,6 +223,14 @@ static inline int arch_write_can_lock(arch_rwlock_t *lock)
 static inline void arch_read_lock(arch_rwlock_t *rw)
 {
 	asm volatile(LOCK_PREFIX READ_LOCK_SIZE(dec) " (%0)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX READ_LOCK_SIZE(inc) " (%0)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     "jns 1f\n"
 		     "call __read_lock_failed\n\t"
 		     "1:\n"
@@ -232,6 +240,14 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
 static inline void arch_write_lock(arch_rwlock_t *rw)
 {
 	asm volatile(LOCK_PREFIX WRITE_LOCK_SUB(%1) "(%0)\n\t"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX WRITE_LOCK_ADD(%1) "(%0)\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     "jz 1f\n"
 		     "call __write_lock_failed\n\t"
 		     "1:\n"
@@ -261,13 +277,29 @@ static inline int arch_write_trylock(arch_rwlock_t *lock)
 
 static inline void arch_read_unlock(arch_rwlock_t *rw)
 {
-	asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0"
+	asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX READ_LOCK_SIZE(dec) " %0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     :"+m" (rw->lock) : : "memory");
 }
 
 static inline void arch_write_unlock(arch_rwlock_t *rw)
 {
-	asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0"
+	asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0\n"
+
+#ifdef CONFIG_PAX_REFCOUNT
+		     "jno 0f\n"
+		     LOCK_PREFIX WRITE_LOCK_SUB(%1) "%0\n"
+		     "int $4\n0:\n"
+		     _ASM_EXTABLE(0b, 0b)
+#endif
+
 		     : "+m" (rw->write) : "i" (RW_LOCK_BIAS) : "memory");
 }
 #else
diff --git a/arch/x86/include/asm/stackprotector.h b/arch/x86/include/asm/stackprotector.h
index 6a99859..03cb807 100644
--- a/arch/x86/include/asm/stackprotector.h
+++ b/arch/x86/include/asm/stackprotector.h
@@ -47,7 +47,7 @@
  * head_32 for boot CPU and setup_per_cpu_areas() for others.
  */
 #define GDT_STACK_CANARY_INIT						\
-	[GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18),
+	[GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x17),
 
 /*
  * Initialize the stackprotector canary value.
@@ -112,7 +112,7 @@ static inline void setup_stack_canary_segment(int cpu)
 
 static inline void load_stack_canary_segment(void)
 {
-#ifdef CONFIG_X86_32
+#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF)
 	asm volatile ("mov %0, %%gs" : : "r" (0));
 #endif
 }
diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h
index 70bbe39..4ae2bd4 100644
--- a/arch/x86/include/asm/stacktrace.h
+++ b/arch/x86/include/asm/stacktrace.h
@@ -11,28 +11,20 @@
 
 extern int kstack_depth_to_print;
 
-struct thread_info;
+struct task_struct;
 struct stacktrace_ops;
 
-typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo,
-				      unsigned long *stack,
-				      unsigned long bp,
-				      const struct stacktrace_ops *ops,
-				      void *data,
-				      unsigned long *end,
-				      int *graph);
+typedef unsigned long walk_stack_t(struct task_struct *task,
+				   void *stack_start,
+				   unsigned long *stack,
+				   unsigned long bp,
+				   const struct stacktrace_ops *ops,
+				   void *data,
+				   unsigned long *end,
+				   int *graph);
 
-extern unsigned long
-print_context_stack(struct thread_info *tinfo,
-		    unsigned long *stack, unsigned long bp,
-		    const struct stacktrace_ops *ops, void *data,
-		    unsigned long *end, int *graph);
-
-extern unsigned long
-print_context_stack_bp(struct thread_info *tinfo,
-		       unsigned long *stack, unsigned long bp,
-		       const struct stacktrace_ops *ops, void *data,
-		       unsigned long *end, int *graph);
+extern walk_stack_t print_context_stack;
+extern walk_stack_t print_context_stack_bp;
 
 /* Generic stack tracer with callbacks */
 
@@ -40,7 +32,7 @@ struct stacktrace_ops {
 	void (*address)(void *data, unsigned long address, int reliable);
 	/* On negative return stop dumping */
 	int (*stack)(void *data, char *name);
-	walk_stack_t	walk_stack;
+	walk_stack_t	*walk_stack;
 };
 
 void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h
index d7f3b3b..3cc39f1 100644
--- a/arch/x86/include/asm/switch_to.h
+++ b/arch/x86/include/asm/switch_to.h
@@ -108,7 +108,7 @@ do {									\
 	     "call __switch_to\n\t"					  \
 	     "movq "__percpu_arg([current_task])",%%rsi\n\t"		  \
 	     __switch_canary						  \
-	     "movq %P[thread_info](%%rsi),%%r8\n\t"			  \
+	     "movq "__percpu_arg([thread_info])",%%r8\n\t"		  \
 	     "movq %%rax,%%rdi\n\t" 					  \
 	     "testl  %[_tif_fork],%P[ti_flags](%%r8)\n\t"		  \
 	     "jnz   ret_from_fork\n\t"					  \
@@ -119,7 +119,7 @@ do {									\
 	       [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \
 	       [ti_flags] "i" (offsetof(struct thread_info, flags)),	  \
 	       [_tif_fork] "i" (_TIF_FORK),			  	  \
-	       [thread_info] "i" (offsetof(struct task_struct, stack)),   \
+	       [thread_info] "m" (current_tinfo),			  \
 	       [current_task] "m" (current_task)			  \
 	       __switch_canary_iparam					  \
 	     : "memory", "cc" __EXTRA_CLOBBER)
diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
index 8540538..4b0b5e9 100644
--- a/arch/x86/include/asm/thread_info.h
+++ b/arch/x86/include/asm/thread_info.h
@@ -24,7 +24,6 @@ struct exec_domain;
 #include <linux/atomic.h>
 
 struct thread_info {
-	struct task_struct	*task;		/* main task structure */
 	struct exec_domain	*exec_domain;	/* execution domain */
 	__u32			flags;		/* low level flags */
 	__u32			status;		/* thread synchronous flags */
@@ -33,13 +32,13 @@ struct thread_info {
 	mm_segment_t		addr_limit;
 	struct restart_block    restart_block;
 	void __user		*sysenter_return;
+	unsigned long		lowest_stack;
 	unsigned int		sig_on_uaccess_error:1;
 	unsigned int		uaccess_err:1;	/* uaccess failed */
 };
 
-#define INIT_THREAD_INFO(tsk)			\
+#define INIT_THREAD_INFO			\
 {						\
-	.task		= &tsk,			\
 	.exec_domain	= &default_exec_domain,	\
 	.flags		= 0,			\
 	.cpu		= 0,			\
@@ -50,7 +49,7 @@ struct thread_info {
 	},					\
 }
 
-#define init_thread_info	(init_thread_union.thread_info)
+#define init_thread_info	(init_thread_union.stack)
 #define init_stack		(init_thread_union.stack)
 
 #else /* !__ASSEMBLY__ */
@@ -91,6 +90,7 @@ struct thread_info {
 #define TIF_SYSCALL_TRACEPOINT	28	/* syscall tracepoint instrumentation */
 #define TIF_ADDR32		29	/* 32-bit address space on 64 bits */
 #define TIF_X32			30	/* 32-bit native x86-64 binary */
+#define TIF_GRSEC_SETXID	31	/* update credentials on syscall entry/exit */
 
 #define _TIF_SYSCALL_TRACE	(1 << TIF_SYSCALL_TRACE)
 #define _TIF_NOTIFY_RESUME	(1 << TIF_NOTIFY_RESUME)
@@ -115,17 +115,18 @@ struct thread_info {
 #define _TIF_SYSCALL_TRACEPOINT	(1 << TIF_SYSCALL_TRACEPOINT)
 #define _TIF_ADDR32		(1 << TIF_ADDR32)
 #define _TIF_X32		(1 << TIF_X32)
+#define _TIF_GRSEC_SETXID	(1 << TIF_GRSEC_SETXID)
 
 /* work to do in syscall_trace_enter() */
 #define _TIF_WORK_SYSCALL_ENTRY	\
 	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU | _TIF_SYSCALL_AUDIT |	\
 	 _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT |	\
-	 _TIF_NOHZ)
+	 _TIF_NOHZ | _TIF_GRSEC_SETXID)
 
 /* work to do in syscall_trace_leave() */
 #define _TIF_WORK_SYSCALL_EXIT	\
 	(_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP |	\
-	 _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ)
+	 _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ | _TIF_GRSEC_SETXID)
 
 /* work to do on interrupt/exception return */
 #define _TIF_WORK_MASK							\
@@ -136,7 +137,7 @@ struct thread_info {
 /* work to do on any return to user space */
 #define _TIF_ALLWORK_MASK						\
 	((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT |	\
-	_TIF_NOHZ)
+	_TIF_NOHZ | _TIF_GRSEC_SETXID)
 
 /* Only used for 64 bit */
 #define _TIF_DO_NOTIFY_MASK						\
@@ -151,7 +152,6 @@ struct thread_info {
 #define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW)
 
 #define STACK_WARN		(THREAD_SIZE/8)
-#define KERNEL_STACK_OFFSET	(5*(BITS_PER_LONG/8))
 
 /*
  * macros/functions for gaining access to the thread information structure
@@ -162,26 +162,18 @@ struct thread_info {
 
 DECLARE_PER_CPU(unsigned long, kernel_stack);
 
+DECLARE_PER_CPU(struct thread_info *, current_tinfo);
+
 static inline struct thread_info *current_thread_info(void)
 {
-	struct thread_info *ti;
-	ti = (void *)(this_cpu_read_stable(kernel_stack) +
-		      KERNEL_STACK_OFFSET - THREAD_SIZE);
-	return ti;
+	return this_cpu_read_stable(current_tinfo);
 }
 
 #else /* !__ASSEMBLY__ */
 
 /* how to get the thread information struct from ASM */
 #define GET_THREAD_INFO(reg) \
-	_ASM_MOV PER_CPU_VAR(kernel_stack),reg ; \
-	_ASM_SUB $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg ;
-
-/*
- * Same if PER_CPU_VAR(kernel_stack) is, perhaps with some offset, already in
- * a certain register (to be used in assembler memory operands).
- */
-#define THREAD_INFO(reg, off) KERNEL_STACK_OFFSET+(off)-THREAD_SIZE(reg)
+	_ASM_MOV PER_CPU_VAR(current_tinfo),reg ;
 
 #endif
 
@@ -237,5 +229,12 @@ static inline bool is_ia32_task(void)
 extern void arch_task_cache_init(void);
 extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
 extern void arch_release_task_struct(struct task_struct *tsk);
+
+#define __HAVE_THREAD_FUNCTIONS
+#define task_thread_info(task)	(&(task)->tinfo)
+#define task_stack_page(task)	((task)->stack)
+#define setup_thread_stack(p, org) do {} while (0)
+#define end_of_stack(p) ((unsigned long *)task_stack_page(p) + 1)
+
 #endif
 #endif /* _ASM_X86_THREAD_INFO_H */
diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
index 04905bf..1178cdf 100644
--- a/arch/x86/include/asm/tlbflush.h
+++ b/arch/x86/include/asm/tlbflush.h
@@ -17,18 +17,44 @@
 
 static inline void __native_flush_tlb(void)
 {
+	if (static_cpu_has(X86_FEATURE_INVPCID)) {
+		u64 descriptor[2];
+
+		descriptor[0] = PCID_KERNEL;
+		asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_ALL_NONGLOBAL) : "memory");
+		return;
+	}
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if (static_cpu_has(X86_FEATURE_PCID)) {
+		unsigned int cpu = raw_get_cpu();
+
+		native_write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER);
+		native_write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL);
+		raw_put_cpu_no_resched();
+		return;
+	}
+#endif
+
 	native_write_cr3(native_read_cr3());
 }
 
 static inline void __native_flush_tlb_global_irq_disabled(void)
 {
-	unsigned long cr4;
+	if (static_cpu_has(X86_FEATURE_INVPCID)) {
+		u64 descriptor[2];
 
-	cr4 = native_read_cr4();
-	/* clear PGE */
-	native_write_cr4(cr4 & ~X86_CR4_PGE);
-	/* write old PGE again and flush TLBs */
-	native_write_cr4(cr4);
+		descriptor[0] = PCID_KERNEL;
+		asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_ALL_GLOBAL) : "memory");
+	} else {
+		unsigned long cr4;
+
+		cr4 = native_read_cr4();
+		/* clear PGE */
+		native_write_cr4(cr4 & ~X86_CR4_PGE);
+		/* write old PGE again and flush TLBs */
+		native_write_cr4(cr4);
+	}
 }
 
 static inline void __native_flush_tlb_global(void)
@@ -49,6 +75,41 @@ static inline void __native_flush_tlb_global(void)
 
 static inline void __native_flush_tlb_single(unsigned long addr)
 {
+	if (static_cpu_has(X86_FEATURE_INVPCID)) {
+		u64 descriptor[2];
+
+		descriptor[0] = PCID_KERNEL;
+		descriptor[1] = addr;
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		if (!static_cpu_has(X86_FEATURE_STRONGUDEREF) || addr >= TASK_SIZE_MAX) {
+			if (addr < TASK_SIZE_MAX)
+				descriptor[1] += pax_user_shadow_base;
+			asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_ADDRESS) : "memory");
+		}
+
+		descriptor[0] = PCID_USER;
+		descriptor[1] = addr;
+#endif
+
+		asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_ADDRESS) : "memory");
+		return;
+	}
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if (static_cpu_has(X86_FEATURE_PCID)) {
+		unsigned int cpu = raw_get_cpu();
+
+		native_write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER | PCID_NOFLUSH);
+		asm volatile("invlpg (%0)" ::"r" (addr) : "memory");
+		native_write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
+		raw_put_cpu_no_resched();
+
+		if (!static_cpu_has(X86_FEATURE_STRONGUDEREF) && addr < TASK_SIZE_MAX)
+			addr += pax_user_shadow_base;
+	}
+#endif
+
 	asm volatile("invlpg (%0)" ::"r" (addr) : "memory");
 }
 
diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
index 0d592e0..526f797 100644
--- a/arch/x86/include/asm/uaccess.h
+++ b/arch/x86/include/asm/uaccess.h
@@ -7,6 +7,7 @@
 #include <linux/compiler.h>
 #include <linux/thread_info.h>
 #include <linux/string.h>
+#include <linux/spinlock.h>
 #include <asm/asm.h>
 #include <asm/page.h>
 #include <asm/smap.h>
@@ -29,7 +30,12 @@
 
 #define get_ds()	(KERNEL_DS)
 #define get_fs()	(current_thread_info()->addr_limit)
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+void __set_fs(mm_segment_t x);
+void set_fs(mm_segment_t x);
+#else
 #define set_fs(x)	(current_thread_info()->addr_limit = (x))
+#endif
 
 #define segment_eq(a, b)	((a).seg == (b).seg)
 
@@ -85,8 +91,36 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un
  * checks that the pointer is in the user space range - after calling
  * this function, memory access functions may still return -EFAULT.
  */
-#define access_ok(type, addr, size) \
-	likely(!__range_not_ok(addr, size, user_addr_max()))
+extern int _cond_resched(void);
+#define access_ok_noprefault(type, addr, size) (likely(!__range_not_ok(addr, size, user_addr_max())))
+#define access_ok(type, addr, size)					\
+({									\
+	unsigned long __size = size;					\
+	unsigned long __addr = (unsigned long)addr;			\
+	bool __ret_ao = __range_not_ok(__addr, __size, user_addr_max()) == 0;\
+	if (__ret_ao && __size) {					\
+		unsigned long __addr_ao = __addr & PAGE_MASK;		\
+		unsigned long __end_ao = __addr + __size - 1;		\
+		if (unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) {	\
+			while (__addr_ao <= __end_ao) {			\
+				char __c_ao;				\
+				__addr_ao += PAGE_SIZE;			\
+				if (__size > PAGE_SIZE)			\
+					_cond_resched();		\
+				if (__get_user(__c_ao, (char __user *)__addr))	\
+					break;				\
+				if (type != VERIFY_WRITE) {		\
+					__addr = __addr_ao;		\
+					continue;			\
+				}					\
+				if (__put_user(__c_ao, (char __user *)__addr))	\
+					break;				\
+				__addr = __addr_ao;			\
+			}						\
+		}							\
+	}								\
+	__ret_ao;							\
+})
 
 /*
  * The exception table consists of pairs of addresses relative to the
@@ -176,10 +210,12 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
 	register __inttype(*(ptr)) __val_gu asm("%"_ASM_DX);		\
 	__chk_user_ptr(ptr);						\
 	might_fault();							\
+	pax_open_userland();						\
 	asm volatile("call __get_user_%P3"				\
 		     : "=a" (__ret_gu), "=r" (__val_gu)			\
 		     : "0" (ptr), "i" (sizeof(*(ptr))));		\
 	(x) = (__typeof__(*(ptr))) __val_gu;				\
+	pax_close_userland();						\
 	__ret_gu;							\
 })
 
@@ -187,13 +223,21 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
 	asm volatile("call __put_user_" #size : "=a" (__ret_pu)	\
 		     : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
 
-
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __copyuser_seg "gs;"
+#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n"
+#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n"
+#else
+#define __copyuser_seg
+#define __COPYUSER_SET_ES
+#define __COPYUSER_RESTORE_ES
+#endif
 
 #ifdef CONFIG_X86_32
 #define __put_user_asm_u64(x, addr, err, errret)			\
 	asm volatile(ASM_STAC "\n"					\
-		     "1:	movl %%eax,0(%2)\n"			\
-		     "2:	movl %%edx,4(%2)\n"			\
+		     "1:	"__copyuser_seg"movl %%eax,0(%2)\n"	\
+		     "2:	"__copyuser_seg"movl %%edx,4(%2)\n"	\
 		     "3: " ASM_CLAC "\n"				\
 		     ".section .fixup,\"ax\"\n"				\
 		     "4:	movl %3,%0\n"				\
@@ -206,8 +250,8 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
 
 #define __put_user_asm_ex_u64(x, addr)					\
 	asm volatile(ASM_STAC "\n"					\
-		     "1:	movl %%eax,0(%1)\n"			\
-		     "2:	movl %%edx,4(%1)\n"			\
+		     "1:	"__copyuser_seg"movl %%eax,0(%1)\n"	\
+		     "2:	"__copyuser_seg"movl %%edx,4(%1)\n"	\
 		     "3: " ASM_CLAC "\n"				\
 		     _ASM_EXTABLE_EX(1b, 2b)				\
 		     _ASM_EXTABLE_EX(2b, 3b)				\
@@ -257,7 +301,8 @@ extern void __put_user_8(void);
 	__typeof__(*(ptr)) __pu_val;				\
 	__chk_user_ptr(ptr);					\
 	might_fault();						\
-	__pu_val = x;						\
+	__pu_val = (x);						\
+	pax_open_userland();					\
 	switch (sizeof(*(ptr))) {				\
 	case 1:							\
 		__put_user_x(1, __pu_val, ptr, __ret_pu);	\
@@ -275,6 +320,7 @@ extern void __put_user_8(void);
 		__put_user_x(X, __pu_val, ptr, __ret_pu);	\
 		break;						\
 	}							\
+	pax_close_userland();					\
 	__ret_pu;						\
 })
 
@@ -355,8 +401,10 @@ do {									\
 } while (0)
 
 #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret)	\
+do {									\
+	pax_open_userland();						\
 	asm volatile(ASM_STAC "\n"					\
-		     "1:	mov"itype" %2,%"rtype"1\n"		\
+		     "1:	"__copyuser_seg"mov"itype" %2,%"rtype"1\n"\
 		     "2: " ASM_CLAC "\n"				\
 		     ".section .fixup,\"ax\"\n"				\
 		     "3:	mov %3,%0\n"				\
@@ -364,8 +412,10 @@ do {									\
 		     "	jmp 2b\n"					\
 		     ".previous\n"					\
 		     _ASM_EXTABLE(1b, 3b)				\
-		     : "=r" (err), ltype(x)				\
-		     : "m" (__m(addr)), "i" (errret), "0" (err))
+		     : "=r" (err), ltype (x)				\
+		     : "m" (__m(addr)), "i" (errret), "0" (err));	\
+	pax_close_userland();						\
+} while (0)
 
 #define __get_user_size_ex(x, ptr, size)				\
 do {									\
@@ -389,7 +439,7 @@ do {									\
 } while (0)
 
 #define __get_user_asm_ex(x, addr, itype, rtype, ltype)			\
-	asm volatile("1:	mov"itype" %1,%"rtype"0\n"		\
+	asm volatile("1:	"__copyuser_seg"mov"itype" %1,%"rtype"0\n"\
 		     "2:\n"						\
 		     _ASM_EXTABLE_EX(1b, 2b)				\
 		     : ltype(x) : "m" (__m(addr)))
@@ -406,13 +456,24 @@ do {									\
 	int __gu_err;							\
 	unsigned long __gu_val;						\
 	__get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT);	\
-	(x) = (__force __typeof__(*(ptr)))__gu_val;			\
+	(x) = (__typeof__(*(ptr)))__gu_val;				\
 	__gu_err;							\
 })
 
 /* FIXME: this hack is definitely wrong -AK */
 struct __large_struct { unsigned long buf[100]; };
-#define __m(x) (*(struct __large_struct __user *)(x))
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define ____m(x)					\
+({							\
+	unsigned long ____x = (unsigned long)(x);	\
+	if (____x < pax_user_shadow_base)		\
+		____x += pax_user_shadow_base;		\
+	(typeof(x))____x;				\
+})
+#else
+#define ____m(x) (x)
+#endif
+#define __m(x) (*(struct __large_struct __user *)____m(x))
 
 /*
  * Tell gcc we read from memory instead of writing: this is because
@@ -420,8 +481,10 @@ struct __large_struct { unsigned long buf[100]; };
  * aliasing issues.
  */
 #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret)	\
+do {									\
+	pax_open_userland();						\
 	asm volatile(ASM_STAC "\n"					\
-		     "1:	mov"itype" %"rtype"1,%2\n"		\
+		     "1:	"__copyuser_seg"mov"itype" %"rtype"1,%2\n"\
 		     "2: " ASM_CLAC "\n"				\
 		     ".section .fixup,\"ax\"\n"				\
 		     "3:	mov %3,%0\n"				\
@@ -429,10 +492,12 @@ struct __large_struct { unsigned long buf[100]; };
 		     ".previous\n"					\
 		     _ASM_EXTABLE(1b, 3b)				\
 		     : "=r"(err)					\
-		     : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err))
+		     : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err));\
+	pax_close_userland();						\
+} while (0)
 
 #define __put_user_asm_ex(x, addr, itype, rtype, ltype)			\
-	asm volatile("1:	mov"itype" %"rtype"0,%1\n"		\
+	asm volatile("1:	"__copyuser_seg"mov"itype" %"rtype"0,%1\n"\
 		     "2:\n"						\
 		     _ASM_EXTABLE_EX(1b, 2b)				\
 		     : : ltype(x), "m" (__m(addr)))
@@ -442,11 +507,13 @@ struct __large_struct { unsigned long buf[100]; };
  */
 #define uaccess_try	do {						\
 	current_thread_info()->uaccess_err = 0;				\
+	pax_open_userland();						\
 	stac();								\
 	barrier();
 
 #define uaccess_catch(err)						\
 	clac();								\
+	pax_close_userland();						\
 	(err) |= (current_thread_info()->uaccess_err ? -EFAULT : 0);	\
 } while (0)
 
@@ -471,8 +538,12 @@ struct __large_struct { unsigned long buf[100]; };
  * On error, the variable @x is set to zero.
  */
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __get_user(x, ptr)	get_user((x), (ptr))
+#else
 #define __get_user(x, ptr)						\
 	__get_user_nocheck((x), (ptr), sizeof(*(ptr)))
+#endif
 
 /**
  * __put_user: - Write a simple value into user space, with less checking.
@@ -494,8 +565,12 @@ struct __large_struct { unsigned long buf[100]; };
  * Returns zero on success, or -EFAULT on error.
  */
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __put_user(x, ptr)	put_user((x), (ptr))
+#else
 #define __put_user(x, ptr)						\
 	__put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
+#endif
 
 #define __get_user_unaligned __get_user
 #define __put_user_unaligned __put_user
@@ -513,7 +588,7 @@ struct __large_struct { unsigned long buf[100]; };
 #define get_user_ex(x, ptr)	do {					\
 	unsigned long __gue_val;					\
 	__get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr))));	\
-	(x) = (__force __typeof__(*(ptr)))__gue_val;			\
+	(x) = (__typeof__(*(ptr)))__gue_val;				\
 } while (0)
 
 #define put_user_try		uaccess_try
@@ -542,18 +617,19 @@ extern void __cmpxchg_wrong_size(void)
 	__typeof__(ptr) __uval = (uval);				\
 	__typeof__(*(ptr)) __old = (old);				\
 	__typeof__(*(ptr)) __new = (new);				\
+	pax_open_userland();						\
 	switch (size) {							\
 	case 1:								\
 	{								\
 		asm volatile("\t" ASM_STAC "\n"				\
-			"1:\t" LOCK_PREFIX "cmpxchgb %4, %2\n"		\
+			"1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgb %4, %2\n"\
 			"2:\t" ASM_CLAC "\n"				\
 			"\t.section .fixup, \"ax\"\n"			\
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
 			_ASM_EXTABLE(1b, 3b)				\
-			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
+			: "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
 			: "i" (-EFAULT), "q" (__new), "1" (__old)	\
 			: "memory"					\
 		);							\
@@ -562,14 +638,14 @@ extern void __cmpxchg_wrong_size(void)
 	case 2:								\
 	{								\
 		asm volatile("\t" ASM_STAC "\n"				\
-			"1:\t" LOCK_PREFIX "cmpxchgw %4, %2\n"		\
+			"1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgw %4, %2\n"\
 			"2:\t" ASM_CLAC "\n"				\
 			"\t.section .fixup, \"ax\"\n"			\
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
 			_ASM_EXTABLE(1b, 3b)				\
-			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
+			: "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
 			: "i" (-EFAULT), "r" (__new), "1" (__old)	\
 			: "memory"					\
 		);							\
@@ -578,14 +654,14 @@ extern void __cmpxchg_wrong_size(void)
 	case 4:								\
 	{								\
 		asm volatile("\t" ASM_STAC "\n"				\
-			"1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n"		\
+			"1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %4, %2\n"\
 			"2:\t" ASM_CLAC "\n"				\
 			"\t.section .fixup, \"ax\"\n"			\
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
 			_ASM_EXTABLE(1b, 3b)				\
-			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
+			: "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
 			: "i" (-EFAULT), "r" (__new), "1" (__old)	\
 			: "memory"					\
 		);							\
@@ -597,14 +673,14 @@ extern void __cmpxchg_wrong_size(void)
 			__cmpxchg_wrong_size();				\
 									\
 		asm volatile("\t" ASM_STAC "\n"				\
-			"1:\t" LOCK_PREFIX "cmpxchgq %4, %2\n"		\
+			"1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgq %4, %2\n"\
 			"2:\t" ASM_CLAC "\n"				\
 			"\t.section .fixup, \"ax\"\n"			\
 			"3:\tmov     %3, %0\n"				\
 			"\tjmp     2b\n"				\
 			"\t.previous\n"					\
 			_ASM_EXTABLE(1b, 3b)				\
-			: "+r" (__ret), "=a" (__old), "+m" (*(ptr))	\
+			: "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
 			: "i" (-EFAULT), "r" (__new), "1" (__old)	\
 			: "memory"					\
 		);							\
@@ -613,6 +689,7 @@ extern void __cmpxchg_wrong_size(void)
 	default:							\
 		__cmpxchg_wrong_size();					\
 	}								\
+	pax_close_userland();						\
 	*__uval = __old;						\
 	__ret;								\
 })
@@ -636,17 +713,6 @@ extern struct movsl_mask {
 
 #define ARCH_HAS_NOCACHE_UACCESS 1
 
-#ifdef CONFIG_X86_32
-# include <asm/uaccess_32.h>
-#else
-# include <asm/uaccess_64.h>
-#endif
-
-unsigned long __must_check _copy_from_user(void *to, const void __user *from,
-					   unsigned n);
-unsigned long __must_check _copy_to_user(void __user *to, const void *from,
-					 unsigned n);
-
 #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
 # define copy_user_diag __compiletime_error
 #else
@@ -656,7 +722,7 @@ unsigned long __must_check _copy_to_user(void __user *to, const void *from,
 extern void copy_user_diag("copy_from_user() buffer size is too small")
 copy_from_user_overflow(void);
 extern void copy_user_diag("copy_to_user() buffer size is too small")
-copy_to_user_overflow(void) __asm__("copy_from_user_overflow");
+copy_to_user_overflow(void);
 
 #undef copy_user_diag
 
@@ -669,7 +735,7 @@ __copy_from_user_overflow(void) __asm__("copy_from_user_overflow");
 
 extern void
 __compiletime_warning("copy_to_user() buffer size is not provably correct")
-__copy_to_user_overflow(void) __asm__("copy_from_user_overflow");
+__copy_to_user_overflow(void) __asm__("copy_to_user_overflow");
 #define __copy_to_user_overflow(size, count) __copy_to_user_overflow()
 
 #else
@@ -684,10 +750,16 @@ __copy_from_user_overflow(int size, unsigned long count)
 
 #endif
 
+#ifdef CONFIG_X86_32
+# include <asm/uaccess_32.h>
+#else
+# include <asm/uaccess_64.h>
+#endif
+
 static inline unsigned long __must_check
 copy_from_user(void *to, const void __user *from, unsigned long n)
 {
-	int sz = __compiletime_object_size(to);
+	size_t sz = __compiletime_object_size(to);
 
 	might_fault();
 
@@ -709,12 +781,15 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
 	 * case, and do only runtime checking for non-constant sizes.
 	 */
 
-	if (likely(sz < 0 || sz >= n))
-		n = _copy_from_user(to, from, n);
-	else if(__builtin_constant_p(n))
-		copy_from_user_overflow();
-	else
-		__copy_from_user_overflow(sz, n);
+	if (likely(sz != (size_t)-1  && sz < n)) {
+		 if(__builtin_constant_p(n))
+			copy_from_user_overflow();
+		else
+			__copy_from_user_overflow(sz, n);
+	} else if (access_ok(VERIFY_READ, from, n))
+		n = __copy_from_user(to, from, n);
+	else if ((long)n > 0)
+		memset(to, 0, n);
 
 	return n;
 }
@@ -722,17 +797,18 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
 static inline unsigned long __must_check
 copy_to_user(void __user *to, const void *from, unsigned long n)
 {
-	int sz = __compiletime_object_size(from);
+	size_t sz = __compiletime_object_size(from);
 
 	might_fault();
 
 	/* See the comment in copy_from_user() above. */
-	if (likely(sz < 0 || sz >= n))
-		n = _copy_to_user(to, from, n);
-	else if(__builtin_constant_p(n))
-		copy_to_user_overflow();
-	else
-		__copy_to_user_overflow(sz, n);
+	if (likely(sz != (size_t)-1  && sz < n)) {
+		 if(__builtin_constant_p(n))
+			copy_to_user_overflow();
+		else
+			__copy_to_user_overflow(sz, n);
+	} else if (access_ok(VERIFY_WRITE, to, n))
+		n = __copy_to_user(to, from, n);
 
 	return n;
 }
diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h
index 3c03a5d..1071638 100644
--- a/arch/x86/include/asm/uaccess_32.h
+++ b/arch/x86/include/asm/uaccess_32.h
@@ -43,6 +43,11 @@ unsigned long __must_check __copy_from_user_ll_nocache_nozero
 static __always_inline unsigned long __must_check
 __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
+	check_object_size(from, n, true);
+
 	if (__builtin_constant_p(n)) {
 		unsigned long ret;
 
@@ -82,12 +87,16 @@ static __always_inline unsigned long __must_check
 __copy_to_user(void __user *to, const void *from, unsigned long n)
 {
 	might_fault();
+
 	return __copy_to_user_inatomic(to, from, n);
 }
 
 static __always_inline unsigned long
 __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n)
 {
+	if ((long)n < 0)
+		return n;
+
 	/* Avoid zeroing the tail if the copy fails..
 	 * If 'n' is constant and 1, 2, or 4, we do still zero on a failure,
 	 * but as the zeroing behaviour is only significant when n is not
@@ -137,6 +146,12 @@ static __always_inline unsigned long
 __copy_from_user(void *to, const void __user *from, unsigned long n)
 {
 	might_fault();
+
+	if ((long)n < 0)
+		return n;
+
+	check_object_size(to, n, false);
+
 	if (__builtin_constant_p(n)) {
 		unsigned long ret;
 
@@ -159,6 +174,10 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to,
 				const void __user *from, unsigned long n)
 {
 	might_fault();
+
+	if ((long)n < 0)
+		return n;
+
 	if (__builtin_constant_p(n)) {
 		unsigned long ret;
 
@@ -181,7 +200,10 @@ static __always_inline unsigned long
 __copy_from_user_inatomic_nocache(void *to, const void __user *from,
 				  unsigned long n)
 {
-       return __copy_from_user_ll_nocache_nozero(to, from, n);
+	if ((long)n < 0)
+		return n;
+
+	return __copy_from_user_ll_nocache_nozero(to, from, n);
 }
 
 #endif /* _ASM_X86_UACCESS_32_H */
diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h
index 12a26b9..206c200 100644
--- a/arch/x86/include/asm/uaccess_64.h
+++ b/arch/x86/include/asm/uaccess_64.h
@@ -10,6 +10,9 @@
 #include <asm/alternative.h>
 #include <asm/cpufeature.h>
 #include <asm/page.h>
+#include <asm/pgtable.h>
+
+#define set_fs(x)	(current_thread_info()->addr_limit = (x))
 
 /*
  * Copy To/From Userspace
@@ -17,14 +20,14 @@
 
 /* Handles exceptions in both to and from, but doesn't do access_ok */
 __must_check unsigned long
-copy_user_enhanced_fast_string(void *to, const void *from, unsigned len);
+copy_user_enhanced_fast_string(void *to, const void *from, unsigned len) __size_overflow(3);
 __must_check unsigned long
-copy_user_generic_string(void *to, const void *from, unsigned len);
+copy_user_generic_string(void *to, const void *from, unsigned len) __size_overflow(3);
 __must_check unsigned long
-copy_user_generic_unrolled(void *to, const void *from, unsigned len);
+copy_user_generic_unrolled(void *to, const void *from, unsigned len) __size_overflow(3);
 
 static __always_inline __must_check unsigned long
-copy_user_generic(void *to, const void *from, unsigned len)
+copy_user_generic(void *to, const void *from, unsigned long len)
 {
 	unsigned ret;
 
@@ -46,121 +49,170 @@ copy_user_generic(void *to, const void *from, unsigned len)
 }
 
 __must_check unsigned long
-copy_in_user(void __user *to, const void __user *from, unsigned len);
+copy_in_user(void __user *to, const void __user *from, unsigned long len);
 
 static __always_inline __must_check
-int __copy_from_user_nocheck(void *dst, const void __user *src, unsigned size)
+unsigned long __copy_from_user_nocheck(void *dst, const void __user *src, unsigned long size)
 {
-	int ret = 0;
+	size_t sz = __compiletime_object_size(dst);
+	unsigned ret = 0;
+
+	if (size > INT_MAX)
+		return size;
+
+	check_object_size(dst, size, false);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!access_ok_noprefault(VERIFY_READ, src, size))
+		return size;
+#endif
+
+	if (unlikely(sz != (size_t)-1 && sz < size)) {
+		 if(__builtin_constant_p(size))
+			copy_from_user_overflow();
+		else
+			__copy_from_user_overflow(sz, size);
+		return size;
+	}
 
 	if (!__builtin_constant_p(size))
-		return copy_user_generic(dst, (__force void *)src, size);
+		return copy_user_generic(dst, (__force_kernel const void *)____m(src), size);
 	switch (size) {
-	case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src,
+	case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src,
 			      ret, "b", "b", "=q", 1);
 		return ret;
-	case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src,
+	case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src,
 			      ret, "w", "w", "=r", 2);
 		return ret;
-	case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src,
+	case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src,
 			      ret, "l", "k", "=r", 4);
 		return ret;
-	case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+	case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
 			      ret, "q", "", "=r", 8);
 		return ret;
 	case 10:
-		__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+		__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
 			       ret, "q", "", "=r", 10);
 		if (unlikely(ret))
 			return ret;
 		__get_user_asm(*(u16 *)(8 + (char *)dst),
-			       (u16 __user *)(8 + (char __user *)src),
+			       (const u16 __user *)(8 + (const char __user *)src),
 			       ret, "w", "w", "=r", 2);
 		return ret;
 	case 16:
-		__get_user_asm(*(u64 *)dst, (u64 __user *)src,
+		__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
 			       ret, "q", "", "=r", 16);
 		if (unlikely(ret))
 			return ret;
 		__get_user_asm(*(u64 *)(8 + (char *)dst),
-			       (u64 __user *)(8 + (char __user *)src),
+			       (const u64 __user *)(8 + (const char __user *)src),
 			       ret, "q", "", "=r", 8);
 		return ret;
 	default:
-		return copy_user_generic(dst, (__force void *)src, size);
+		return copy_user_generic(dst, (__force_kernel const void *)____m(src), size);
 	}
 }
 
 static __always_inline __must_check
-int __copy_from_user(void *dst, const void __user *src, unsigned size)
+unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long size)
 {
 	might_fault();
 	return __copy_from_user_nocheck(dst, src, size);
 }
 
 static __always_inline __must_check
-int __copy_to_user_nocheck(void __user *dst, const void *src, unsigned size)
+unsigned long __copy_to_user_nocheck(void __user *dst, const void *src, unsigned long size)
 {
-	int ret = 0;
+	size_t sz = __compiletime_object_size(src);
+	unsigned ret = 0;
+
+	if (size > INT_MAX)
+		return size;
+
+	check_object_size(src, size, true);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!access_ok_noprefault(VERIFY_WRITE, dst, size))
+		return size;
+#endif
+
+	if (unlikely(sz != (size_t)-1 && sz < size)) {
+		 if(__builtin_constant_p(size))
+			copy_to_user_overflow();
+		else
+			__copy_to_user_overflow(sz, size);
+		return size;
+	}
 
 	if (!__builtin_constant_p(size))
-		return copy_user_generic((__force void *)dst, src, size);
+		return copy_user_generic((__force_kernel void *)____m(dst), src, size);
 	switch (size) {
-	case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst,
+	case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst,
 			      ret, "b", "b", "iq", 1);
 		return ret;
-	case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst,
+	case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst,
 			      ret, "w", "w", "ir", 2);
 		return ret;
-	case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst,
+	case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst,
 			      ret, "l", "k", "ir", 4);
 		return ret;
-	case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+	case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
 			      ret, "q", "", "er", 8);
 		return ret;
 	case 10:
-		__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+		__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
 			       ret, "q", "", "er", 10);
 		if (unlikely(ret))
 			return ret;
 		asm("":::"memory");
-		__put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst,
+		__put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst,
 			       ret, "w", "w", "ir", 2);
 		return ret;
 	case 16:
-		__put_user_asm(*(u64 *)src, (u64 __user *)dst,
+		__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
 			       ret, "q", "", "er", 16);
 		if (unlikely(ret))
 			return ret;
 		asm("":::"memory");
-		__put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
+		__put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst,
 			       ret, "q", "", "er", 8);
 		return ret;
 	default:
-		return copy_user_generic((__force void *)dst, src, size);
+		return copy_user_generic((__force_kernel void *)____m(dst), src, size);
 	}
 }
 
 static __always_inline __must_check
-int __copy_to_user(void __user *dst, const void *src, unsigned size)
+unsigned long __copy_to_user(void __user *dst, const void *src, unsigned long size)
 {
 	might_fault();
 	return __copy_to_user_nocheck(dst, src, size);
 }
 
 static __always_inline __must_check
-int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
+unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned size)
 {
-	int ret = 0;
+	unsigned ret = 0;
 
 	might_fault();
+
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!access_ok_noprefault(VERIFY_READ, src, size))
+		return size;
+	if (!access_ok_noprefault(VERIFY_WRITE, dst, size))
+		return size;
+#endif
+
 	if (!__builtin_constant_p(size))
-		return copy_user_generic((__force void *)dst,
-					 (__force void *)src, size);
+		return copy_user_generic((__force_kernel void *)____m(dst),
+					 (__force_kernel const void *)____m(src), size);
 	switch (size) {
 	case 1: {
 		u8 tmp;
-		__get_user_asm(tmp, (u8 __user *)src,
+		__get_user_asm(tmp, (const u8 __user *)src,
 			       ret, "b", "b", "=q", 1);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u8 __user *)dst,
@@ -169,7 +221,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
 	}
 	case 2: {
 		u16 tmp;
-		__get_user_asm(tmp, (u16 __user *)src,
+		__get_user_asm(tmp, (const u16 __user *)src,
 			       ret, "w", "w", "=r", 2);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u16 __user *)dst,
@@ -179,7 +231,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
 
 	case 4: {
 		u32 tmp;
-		__get_user_asm(tmp, (u32 __user *)src,
+		__get_user_asm(tmp, (const u32 __user *)src,
 			       ret, "l", "k", "=r", 4);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u32 __user *)dst,
@@ -188,7 +240,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
 	}
 	case 8: {
 		u64 tmp;
-		__get_user_asm(tmp, (u64 __user *)src,
+		__get_user_asm(tmp, (const u64 __user *)src,
 			       ret, "q", "", "=r", 8);
 		if (likely(!ret))
 			__put_user_asm(tmp, (u64 __user *)dst,
@@ -196,41 +248,58 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
 		return ret;
 	}
 	default:
-		return copy_user_generic((__force void *)dst,
-					 (__force void *)src, size);
+		return copy_user_generic((__force_kernel void *)____m(dst),
+					 (__force_kernel const void *)____m(src), size);
 	}
 }
 
-static __must_check __always_inline int
-__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size)
+static __must_check __always_inline unsigned long
+__copy_from_user_inatomic(void *dst, const void __user *src, unsigned long size)
 {
 	return __copy_from_user_nocheck(dst, src, size);
 }
 
-static __must_check __always_inline int
-__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
+static __must_check __always_inline unsigned long
+__copy_to_user_inatomic(void __user *dst, const void *src, unsigned long size)
 {
 	return __copy_to_user_nocheck(dst, src, size);
 }
 
-extern long __copy_user_nocache(void *dst, const void __user *src,
-				unsigned size, int zerorest);
+extern unsigned long __copy_user_nocache(void *dst, const void __user *src,
+				unsigned long size, int zerorest);
 
-static inline int
-__copy_from_user_nocache(void *dst, const void __user *src, unsigned size)
+static inline unsigned long
+__copy_from_user_nocache(void *dst, const void __user *src, unsigned long size)
 {
 	might_fault();
+
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!access_ok_noprefault(VERIFY_READ, src, size))
+		return size;
+#endif
+
 	return __copy_user_nocache(dst, src, size, 1);
 }
 
-static inline int
+static inline unsigned long
 __copy_from_user_inatomic_nocache(void *dst, const void __user *src,
-				  unsigned size)
+				  unsigned long size)
 {
+	if (size > INT_MAX)
+		return size;
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (!access_ok_noprefault(VERIFY_READ, src, size))
+		return size;
+#endif
+
 	return __copy_user_nocache(dst, src, size, 0);
 }
 
 unsigned long
-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest);
+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) __size_overflow(3);
 
 #endif /* _ASM_X86_UACCESS_64_H */
diff --git a/arch/x86/include/asm/word-at-a-time.h b/arch/x86/include/asm/word-at-a-time.h
index 5b238981..77fdd78 100644
--- a/arch/x86/include/asm/word-at-a-time.h
+++ b/arch/x86/include/asm/word-at-a-time.h
@@ -11,7 +11,7 @@
  * and shift, for example.
  */
 struct word_at_a_time {
-	const unsigned long one_bits, high_bits;
+	unsigned long one_bits, high_bits;
 };
 
 #define WORD_AT_A_TIME_CONSTANTS { REPEAT_BYTE(0x01), REPEAT_BYTE(0x80) }
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index e45e4da..44e8572 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -129,7 +129,7 @@ struct x86_init_ops {
 	struct x86_init_timers		timers;
 	struct x86_init_iommu		iommu;
 	struct x86_init_pci		pci;
-};
+} __no_const;
 
 /**
  * struct x86_cpuinit_ops - platform specific cpu hotplug setups
@@ -140,7 +140,7 @@ struct x86_cpuinit_ops {
 	void (*setup_percpu_clockev)(void);
 	void (*early_percpu_clock_init)(void);
 	void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node);
-};
+} __no_const;
 
 struct timespec;
 
@@ -168,7 +168,7 @@ struct x86_platform_ops {
 	void (*save_sched_clock_state)(void);
 	void (*restore_sched_clock_state)(void);
 	void (*apic_post_init)(void);
-};
+} __no_const;
 
 struct pci_dev;
 struct msi_msg;
@@ -185,7 +185,7 @@ struct x86_msi_ops {
 	int  (*setup_hpet_msi)(unsigned int irq, unsigned int id);
 	u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag);
 	u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag);
-};
+} __no_const;
 
 struct IO_APIC_route_entry;
 struct io_apic_irq_attr;
@@ -206,7 +206,7 @@ struct x86_io_apic_ops {
 				       unsigned int destination, int vector,
 				       struct io_apic_irq_attr *attr);
 	void		(*eoi_ioapic_pin)(int apic, int pin, int vector);
-};
+} __no_const;
 
 extern struct x86_init_ops x86_init;
 extern struct x86_cpuinit_ops x86_cpuinit;
diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
index c949923..c22bfa4 100644
--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -63,7 +63,7 @@ extern int m2p_remove_override(struct page *page,
 extern struct page *m2p_find_override(unsigned long mfn);
 extern unsigned long m2p_find_override_pfn(unsigned long mfn, unsigned long pfn);
 
-static inline unsigned long pfn_to_mfn(unsigned long pfn)
+static inline unsigned long __intentional_overflow(-1) pfn_to_mfn(unsigned long pfn)
 {
 	unsigned long mfn;
 
diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
index d949ef2..479b9d1 100644
--- a/arch/x86/include/asm/xsave.h
+++ b/arch/x86/include/asm/xsave.h
@@ -82,8 +82,11 @@ static inline int xsave_user(struct xsave_struct __user *buf)
 	if (unlikely(err))
 		return -EFAULT;
 
+	pax_open_userland();
 	__asm__ __volatile__(ASM_STAC "\n"
-			     "1: .byte " REX_PREFIX "0x0f,0xae,0x27\n"
+			     "1:"
+			     __copyuser_seg
+			     ".byte " REX_PREFIX "0x0f,0xae,0x27\n"
 			     "2: " ASM_CLAC "\n"
 			     ".section .fixup,\"ax\"\n"
 			     "3:  movl $-1,%[err]\n"
@@ -93,18 +96,22 @@ static inline int xsave_user(struct xsave_struct __user *buf)
 			     : [err] "=r" (err)
 			     : "D" (buf), "a" (-1), "d" (-1), "0" (0)
 			     : "memory");
+	pax_close_userland();
 	return err;
 }
 
 static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask)
 {
 	int err;
-	struct xsave_struct *xstate = ((__force struct xsave_struct *)buf);
+	struct xsave_struct *xstate = ((__force_kernel struct xsave_struct *)buf);
 	u32 lmask = mask;
 	u32 hmask = mask >> 32;
 
+	pax_open_userland();
 	__asm__ __volatile__(ASM_STAC "\n"
-			     "1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n"
+			     "1:"
+			     __copyuser_seg
+			     ".byte " REX_PREFIX "0x0f,0xae,0x2f\n"
 			     "2: " ASM_CLAC "\n"
 			     ".section .fixup,\"ax\"\n"
 			     "3:  movl $-1,%[err]\n"
@@ -114,6 +121,7 @@ static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask)
 			     : [err] "=r" (err)
 			     : "D" (xstate), "a" (lmask), "d" (hmask), "0" (0)
 			     : "memory");	/* memory required? */
+	pax_close_userland();
 	return err;
 }
 
diff --git a/arch/x86/include/uapi/asm/e820.h b/arch/x86/include/uapi/asm/e820.h
index bbae024..e1528f9 100644
--- a/arch/x86/include/uapi/asm/e820.h
+++ b/arch/x86/include/uapi/asm/e820.h
@@ -63,7 +63,7 @@ struct e820map {
 #define ISA_START_ADDRESS	0xa0000
 #define ISA_END_ADDRESS		0x100000
 
-#define BIOS_BEGIN		0x000a0000
+#define BIOS_BEGIN		0x000c0000
 #define BIOS_END		0x00100000
 
 #define BIOS_ROM_BASE		0xffe00000
diff --git a/arch/x86/include/uapi/asm/ptrace-abi.h b/arch/x86/include/uapi/asm/ptrace-abi.h
index 7b0a55a..ad115bf 100644
--- a/arch/x86/include/uapi/asm/ptrace-abi.h
+++ b/arch/x86/include/uapi/asm/ptrace-abi.h
@@ -49,7 +49,6 @@
 #define EFLAGS 144
 #define RSP 152
 #define SS 160
-#define ARGOFFSET R11
 #endif /* __ASSEMBLY__ */
 
 /* top of stack page */
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 047f9ff..4ba5ea6 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -24,7 +24,7 @@ obj-y			+= time.o ioport.o ldt.o dumpstack.o nmi.o
 obj-y			+= setup.o x86_init.o i8259.o irqinit.o jump_label.o
 obj-$(CONFIG_IRQ_WORK)  += irq_work.o
 obj-y			+= probe_roms.o
-obj-$(CONFIG_X86_32)	+= i386_ksyms_32.o
+obj-$(CONFIG_X86_32)	+= sys_i386_32.o i386_ksyms_32.o
 obj-$(CONFIG_X86_64)	+= sys_x86_64.o x8664_ksyms_64.o
 obj-$(CONFIG_X86_64)	+= mcount_64.o
 obj-y			+= syscall_$(BITS).o vsyscall_gtod.o
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 86281ff..e046fc2 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1296,7 +1296,7 @@ static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
  * If your system is blacklisted here, but you find that acpi=force
  * works for you, please contact linux-acpi@vger.kernel.org
  */
-static struct dmi_system_id __initdata acpi_dmi_table[] = {
+static const struct dmi_system_id __initconst acpi_dmi_table[] = {
 	/*
 	 * Boxes that need ACPI disabled
 	 */
@@ -1371,7 +1371,7 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
 };
 
 /* second table for DMI checks that should run after early-quirks */
-static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
+static const struct dmi_system_id __initconst acpi_dmi_table_late[] = {
 	/*
 	 * HP laptops which use a DSDT reporting as HP/SB400/10000,
 	 * which includes some code which overrides all temperature
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
index 3136820..e2c6577 100644
--- a/arch/x86/kernel/acpi/sleep.c
+++ b/arch/x86/kernel/acpi/sleep.c
@@ -99,8 +99,12 @@ int x86_acpi_suspend_lowlevel(void)
 #else /* CONFIG_64BIT */
 #ifdef CONFIG_SMP
 	stack_start = (unsigned long)temp_stack + sizeof(temp_stack);
+
+	pax_open_kernel();
 	early_gdt_descr.address =
 			(unsigned long)get_cpu_gdt_table(smp_processor_id());
+	pax_close_kernel();
+
 	initial_gs = per_cpu_offset(smp_processor_id());
 #endif
 	initial_code = (unsigned long)wakeup_long64;
diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S
index 665c6b7..eae4d56 100644
--- a/arch/x86/kernel/acpi/wakeup_32.S
+++ b/arch/x86/kernel/acpi/wakeup_32.S
@@ -29,13 +29,11 @@ wakeup_pmode_return:
 	# and restore the stack ... but you need gdt for this to work
 	movl	saved_context_esp, %esp
 
-	movl	%cs:saved_magic, %eax
-	cmpl	$0x12345678, %eax
+	cmpl	$0x12345678, saved_magic
 	jne	bogus_magic
 
 	# jump to place where we left off
-	movl	saved_eip, %eax
-	jmp	*%eax
+	jmp	*(saved_eip)
 
 bogus_magic:
 	jmp	bogus_magic
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 703130f..27a155d 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -268,6 +268,13 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
 	 */
 	for (a = start; a < end; a++) {
 		instr = (u8 *)&a->instr_offset + a->instr_offset;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		instr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		if (instr < (u8 *)_text || (u8 *)_einittext <= instr)
+			instr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 		replacement = (u8 *)&a->repl_offset + a->repl_offset;
 		BUG_ON(a->replacementlen > a->instrlen);
 		BUG_ON(a->instrlen > sizeof(insnbuf));
@@ -284,6 +291,11 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
 		add_nops(insnbuf + a->replacementlen,
 			 a->instrlen - a->replacementlen);
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		if (instr < (u8 *)_text || (u8 *)_einittext <= instr)
+			instr = ktva_ktla(instr);
+#endif
+
 		text_poke_early(instr, insnbuf, a->instrlen);
 	}
 }
@@ -299,10 +311,16 @@ static void alternatives_smp_lock(const s32 *start, const s32 *end,
 	for (poff = start; poff < end; poff++) {
 		u8 *ptr = (u8 *)poff + *poff;
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr)
+			ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 		if (!*poff || ptr < text || ptr >= text_end)
 			continue;
 		/* turn DS segment override prefix into lock prefix */
-		if (*ptr == 0x3e)
+		if (*ktla_ktva(ptr) == 0x3e)
 			text_poke(ptr, ((unsigned char []){0xf0}), 1);
 	}
 	mutex_unlock(&text_mutex);
@@ -317,10 +335,16 @@ static void alternatives_smp_unlock(const s32 *start, const s32 *end,
 	for (poff = start; poff < end; poff++) {
 		u8 *ptr = (u8 *)poff + *poff;
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr)
+			ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 		if (!*poff || ptr < text || ptr >= text_end)
 			continue;
 		/* turn lock prefix into DS segment override prefix */
-		if (*ptr == 0xf0)
+		if (*ktla_ktva(ptr) == 0xf0)
 			text_poke(ptr, ((unsigned char []){0x3E}), 1);
 	}
 	mutex_unlock(&text_mutex);
@@ -457,7 +481,7 @@ void __init_or_module apply_paravirt(struct paravirt_patch_site *start,
 
 		BUG_ON(p->len > MAX_PATCH_LEN);
 		/* prep the buffer with the original instructions */
-		memcpy(insnbuf, p->instr, p->len);
+		memcpy(insnbuf, ktla_ktva(p->instr), p->len);
 		used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf,
 					 (unsigned long)p->instr, p->len);
 
@@ -504,7 +528,7 @@ void __init alternative_instructions(void)
 	if (!uniproc_patched || num_possible_cpus() == 1)
 		free_init_pages("SMP alternatives",
 				(unsigned long)__smp_locks,
-				(unsigned long)__smp_locks_end);
+				PAGE_ALIGN((unsigned long)__smp_locks_end));
 #endif
 
 	apply_paravirt(__parainstructions, __parainstructions_end);
@@ -524,13 +548,17 @@ void __init alternative_instructions(void)
  * instructions. And on the local CPU you need to be protected again NMI or MCE
  * handlers seeing an inconsistent instruction while you patch.
  */
-void *__init_or_module text_poke_early(void *addr, const void *opcode,
+void *__kprobes text_poke_early(void *addr, const void *opcode,
 					      size_t len)
 {
 	unsigned long flags;
 	local_irq_save(flags);
-	memcpy(addr, opcode, len);
+
+	pax_open_kernel();
+	memcpy(ktla_ktva(addr), opcode, len);
 	sync_core();
+	pax_close_kernel();
+
 	local_irq_restore(flags);
 	/* Could also do a CLFLUSH here to speed up CPU recovery; but
 	   that causes hangs on some VIA CPUs. */
@@ -552,36 +580,22 @@ void *__init_or_module text_poke_early(void *addr, const void *opcode,
  */
 void *text_poke(void *addr, const void *opcode, size_t len)
 {
-	unsigned long flags;
-	char *vaddr;
+	unsigned char *vaddr = ktla_ktva(addr);
 	struct page *pages[2];
-	int i;
+	size_t i;
 
 	if (!core_kernel_text((unsigned long)addr)) {
-		pages[0] = vmalloc_to_page(addr);
-		pages[1] = vmalloc_to_page(addr + PAGE_SIZE);
+		pages[0] = vmalloc_to_page(vaddr);
+		pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE);
 	} else {
-		pages[0] = virt_to_page(addr);
+		pages[0] = virt_to_page(vaddr);
 		WARN_ON(!PageReserved(pages[0]));
-		pages[1] = virt_to_page(addr + PAGE_SIZE);
+		pages[1] = virt_to_page(vaddr + PAGE_SIZE);
 	}
 	BUG_ON(!pages[0]);
-	local_irq_save(flags);
-	set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0]));
-	if (pages[1])
-		set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1]));
-	vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0);
-	memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len);
-	clear_fixmap(FIX_TEXT_POKE0);
-	if (pages[1])
-		clear_fixmap(FIX_TEXT_POKE1);
-	local_flush_tlb();
-	sync_core();
-	/* Could also do a CLFLUSH here to speed up CPU recovery; but
-	   that causes hangs on some VIA CPUs. */
+	text_poke_early(addr, opcode, len);
 	for (i = 0; i < len; i++)
-		BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]);
-	local_irq_restore(flags);
+		BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]);
 	return addr;
 }
 
@@ -601,7 +615,7 @@ int poke_int3_handler(struct pt_regs *regs)
 	if (likely(!bp_patching_in_progress))
 		return 0;
 
-	if (user_mode_vm(regs) || regs->ip != (unsigned long)bp_int3_addr)
+	if (user_mode(regs) || regs->ip != (unsigned long)bp_int3_addr)
 		return 0;
 
 	/* set up the specified breakpoint handler */
@@ -635,7 +649,7 @@ int poke_int3_handler(struct pt_regs *regs)
  */
 void *text_poke_bp(void *addr, const void *opcode, size_t len, void *handler)
 {
-	unsigned char int3 = 0xcc;
+	const unsigned char int3 = 0xcc;
 
 	bp_int3_handler = handler;
 	bp_int3_addr = (u8 *)addr + sizeof(int3);
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index ad28db7..c538b2c 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -201,7 +201,7 @@ int first_system_vector = 0xfe;
 /*
  * Debug level, exported for io_apic.c
  */
-unsigned int apic_verbosity;
+int apic_verbosity;
 
 int pic_mode;
 
@@ -2000,7 +2000,7 @@ static inline void __smp_error_interrupt(struct pt_regs *regs)
 		apic_write(APIC_ESR, 0);
 	v = apic_read(APIC_ESR);
 	ack_APIC_irq();
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 
 	apic_printk(APIC_DEBUG, KERN_DEBUG "APIC error on CPU%d: %02x",
 		    smp_processor_id(), v);
diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
index 7c1b294..e71d27f 100644
--- a/arch/x86/kernel/apic/apic_flat_64.c
+++ b/arch/x86/kernel/apic/apic_flat_64.c
@@ -154,7 +154,7 @@ static int flat_probe(void)
 	return 1;
 }
 
-static struct apic apic_flat =  {
+static struct apic apic_flat __read_only =  {
 	.name				= "flat",
 	.probe				= flat_probe,
 	.acpi_madt_oem_check		= flat_acpi_madt_oem_check,
@@ -268,7 +268,7 @@ static int physflat_probe(void)
 	return 0;
 }
 
-static struct apic apic_physflat =  {
+static struct apic apic_physflat __read_only =  {
 
 	.name				= "physical flat",
 	.probe				= physflat_probe,
diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c
index 8c7c982..a225910 100644
--- a/arch/x86/kernel/apic/apic_noop.c
+++ b/arch/x86/kernel/apic/apic_noop.c
@@ -118,7 +118,7 @@ static void noop_apic_write(u32 reg, u32 v)
 	WARN_ON_ONCE(cpu_has_apic && !disable_apic);
 }
 
-struct apic apic_noop = {
+struct apic apic_noop __read_only = {
 	.name				= "noop",
 	.probe				= noop_probe,
 	.acpi_madt_oem_check		= NULL,
diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
index e4840aa..e7d9dac 100644
--- a/arch/x86/kernel/apic/bigsmp_32.c
+++ b/arch/x86/kernel/apic/bigsmp_32.c
@@ -152,7 +152,7 @@ static int probe_bigsmp(void)
 	return dmi_bigsmp;
 }
 
-static struct apic apic_bigsmp = {
+static struct apic apic_bigsmp __read_only = {
 
 	.name				= "bigsmp",
 	.probe				= probe_bigsmp,
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 81e08ef..abc77e5 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -1042,7 +1042,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
 }
 EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
 
-void lock_vector_lock(void)
+void lock_vector_lock(void) __acquires(vector_lock)
 {
 	/* Used to the online set of cpus does not change
 	 * during assign_irq_vector.
@@ -1050,7 +1050,7 @@ void lock_vector_lock(void)
 	raw_spin_lock(&vector_lock);
 }
 
-void unlock_vector_lock(void)
+void unlock_vector_lock(void) __releases(vector_lock)
 {
 	raw_spin_unlock(&vector_lock);
 }
@@ -2349,7 +2349,7 @@ static void ack_apic_edge(struct irq_data *data)
 	ack_APIC_irq();
 }
 
-atomic_t irq_mis_count;
+atomic_unchecked_t irq_mis_count;
 
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
@@ -2490,7 +2490,7 @@ static void ack_apic_level(struct irq_data *data)
 	 * at the cpu.
 	 */
 	if (!(v & (1 << (i & 0x1f)))) {
-		atomic_inc(&irq_mis_count);
+		atomic_inc_unchecked(&irq_mis_count);
 
 		eoi_ioapic_irq(irq, cfg);
 	}
diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
index cceb352..a635fd8 100644
--- a/arch/x86/kernel/apic/probe_32.c
+++ b/arch/x86/kernel/apic/probe_32.c
@@ -72,7 +72,7 @@ static int probe_default(void)
 	return 1;
 }
 
-static struct apic apic_default = {
+static struct apic apic_default __read_only = {
 
 	.name				= "default",
 	.probe				= probe_default,
diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c
index e66766b..1c008ba 100644
--- a/arch/x86/kernel/apic/x2apic_cluster.c
+++ b/arch/x86/kernel/apic/x2apic_cluster.c
@@ -182,7 +182,7 @@ update_clusterinfo(struct notifier_block *nfb, unsigned long action, void *hcpu)
 	return notifier_from_errno(err);
 }
 
-static struct notifier_block __refdata x2apic_cpu_notifier = {
+static struct notifier_block x2apic_cpu_notifier = {
 	.notifier_call = update_clusterinfo,
 };
 
@@ -234,7 +234,7 @@ static void cluster_vector_allocation_domain(int cpu, struct cpumask *retmask,
 		cpumask_and(retmask, mask, per_cpu(cpus_in_cluster, cpu));
 }
 
-static struct apic apic_x2apic_cluster = {
+static struct apic apic_x2apic_cluster __read_only = {
 
 	.name				= "cluster x2apic",
 	.probe				= x2apic_cluster_probe,
diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
index 6d600eb..0300c00 100644
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -88,7 +88,7 @@ static int x2apic_phys_probe(void)
 	return apic == &apic_x2apic_phys;
 }
 
-static struct apic apic_x2apic_phys = {
+static struct apic apic_x2apic_phys __read_only = {
 
 	.name				= "physical x2apic",
 	.probe				= x2apic_phys_probe,
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 293b41d..4df25fd 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -350,7 +350,7 @@ static int uv_probe(void)
 	return apic == &apic_x2apic_uv_x;
 }
 
-static struct apic __refdata apic_x2apic_uv_x = {
+static struct apic apic_x2apic_uv_x __read_only = {
 
 	.name				= "UV large system",
 	.probe				= uv_probe,
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 5848744..56cb598 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -433,7 +433,7 @@ static DEFINE_MUTEX(apm_mutex);
  * This is for buggy BIOS's that refer to (real mode) segment 0x40
  * even though they are called in protected mode.
  */
-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093,
 			(unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
 
 static const char driver_version[] = "1.16ac";	/* no spaces */
@@ -611,7 +611,10 @@ static long __apm_bios_call(void *_call)
 	BUG_ON(cpu != 0);
 	gdt = get_cpu_gdt_table(cpu);
 	save_desc_40 = gdt[0x40 / 8];
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = bad_bios_desc;
+	pax_close_kernel();
 
 	apm_irq_save(flags);
 	APM_DO_SAVE_SEGS;
@@ -620,7 +623,11 @@ static long __apm_bios_call(void *_call)
 			  &call->esi);
 	APM_DO_RESTORE_SEGS;
 	apm_irq_restore(flags);
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = save_desc_40;
+	pax_close_kernel();
+
 	put_cpu();
 
 	return call->eax & 0xff;
@@ -687,7 +694,10 @@ static long __apm_bios_call_simple(void *_call)
 	BUG_ON(cpu != 0);
 	gdt = get_cpu_gdt_table(cpu);
 	save_desc_40 = gdt[0x40 / 8];
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = bad_bios_desc;
+	pax_close_kernel();
 
 	apm_irq_save(flags);
 	APM_DO_SAVE_SEGS;
@@ -695,7 +705,11 @@ static long __apm_bios_call_simple(void *_call)
 					 &call->eax);
 	APM_DO_RESTORE_SEGS;
 	apm_irq_restore(flags);
+
+	pax_open_kernel();
 	gdt[0x40 / 8] = save_desc_40;
+	pax_close_kernel();
+
 	put_cpu();
 	return error;
 }
@@ -2350,12 +2364,15 @@ static int __init apm_init(void)
 	 * code to that CPU.
 	 */
 	gdt = get_cpu_gdt_table(0);
+
+	pax_open_kernel();
 	set_desc_base(&gdt[APM_CS >> 3],
 		 (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4));
 	set_desc_base(&gdt[APM_CS_16 >> 3],
 		 (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4));
 	set_desc_base(&gdt[APM_DS >> 3],
 		 (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4));
+	pax_close_kernel();
 
 	proc_create("apm", 0, NULL, &apm_file_ops);
 
diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c
index 9f6b934..cf5ffb3 100644
--- a/arch/x86/kernel/asm-offsets.c
+++ b/arch/x86/kernel/asm-offsets.c
@@ -32,6 +32,8 @@ void common(void) {
 	OFFSET(TI_flags, thread_info, flags);
 	OFFSET(TI_status, thread_info, status);
 	OFFSET(TI_addr_limit, thread_info, addr_limit);
+	OFFSET(TI_lowest_stack, thread_info, lowest_stack);
+	DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo));
 
 	BLANK();
 	OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
@@ -52,8 +54,26 @@ void common(void) {
 	OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit);
 	OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0);
 	OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2);
+
+#ifdef CONFIG_PAX_KERNEXEC
+	OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0);
 #endif
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3);
+	OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3);
+#ifdef CONFIG_X86_64
+	OFFSET(PV_MMU_set_pgd_batched, pv_mmu_ops, set_pgd_batched);
+#endif
+#endif
+
+#endif
+
+	BLANK();
+	DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
+	DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT);
+	DEFINE(THREAD_SIZE_asm, THREAD_SIZE);
+
 #ifdef CONFIG_XEN
 	BLANK();
 	OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index e7c798b..2b2019b 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -77,6 +77,7 @@ int main(void)
 	BLANK();
 #undef ENTRY
 
+	DEFINE(TSS_size, sizeof(struct tss_struct));
 	OFFSET(TSS_ist, tss_struct, x86_tss.ist);
 	BLANK();
 
diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
index 7fd54f0..0691410 100644
--- a/arch/x86/kernel/cpu/Makefile
+++ b/arch/x86/kernel/cpu/Makefile
@@ -8,10 +8,6 @@ CFLAGS_REMOVE_common.o = -pg
 CFLAGS_REMOVE_perf_event.o = -pg
 endif
 
-# Make sure load_percpu_segment has no stackprotector
-nostackp := $(call cc-option, -fno-stack-protector)
-CFLAGS_common.o		:= $(nostackp)
-
 obj-y			:= intel_cacheinfo.o scattered.o topology.o
 obj-y			+= proc.o capflags.o powerflags.o common.o
 obj-y			+= rdrand.o
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index ce8b8ff..d7d8851 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -728,7 +728,7 @@ static void init_amd(struct cpuinfo_x86 *c)
 static unsigned int amd_size_cache(struct cpuinfo_x86 *c, unsigned int size)
 {
 	/* AMD errata T13 (order #21922) */
-	if ((c->x86 == 6)) {
+	if (c->x86 == 6) {
 		/* Duron Rev A0 */
 		if (c->x86_model == 3 && c->x86_mask == 0)
 			size = 64;
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index ef1b93f..150db65 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -90,60 +90,6 @@ static const struct cpu_dev default_cpu = {
 
 static const struct cpu_dev *this_cpu = &default_cpu;
 
-DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = {
-#ifdef CONFIG_X86_64
-	/*
-	 * We need valid kernel segments for data and code in long mode too
-	 * IRET will check the segment types  kkeil 2000/10/28
-	 * Also sysret mandates a special GDT layout
-	 *
-	 * TLS descriptors are currently at a different place compared to i386.
-	 * Hopefully nobody expects them at a fixed place (Wine?)
-	 */
-	[GDT_ENTRY_KERNEL32_CS]		= GDT_ENTRY_INIT(0xc09b, 0, 0xfffff),
-	[GDT_ENTRY_KERNEL_CS]		= GDT_ENTRY_INIT(0xa09b, 0, 0xfffff),
-	[GDT_ENTRY_KERNEL_DS]		= GDT_ENTRY_INIT(0xc093, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER32_CS]	= GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_DS]	= GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_CS]	= GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff),
-#else
-	[GDT_ENTRY_KERNEL_CS]		= GDT_ENTRY_INIT(0xc09a, 0, 0xfffff),
-	[GDT_ENTRY_KERNEL_DS]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_CS]	= GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff),
-	[GDT_ENTRY_DEFAULT_USER_DS]	= GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff),
-	/*
-	 * Segments used for calling PnP BIOS have byte granularity.
-	 * They code segments and data segments have fixed 64k limits,
-	 * the transfer segment sizes are set at run time.
-	 */
-	/* 32-bit code */
-	[GDT_ENTRY_PNPBIOS_CS32]	= GDT_ENTRY_INIT(0x409a, 0, 0xffff),
-	/* 16-bit code */
-	[GDT_ENTRY_PNPBIOS_CS16]	= GDT_ENTRY_INIT(0x009a, 0, 0xffff),
-	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_DS]		= GDT_ENTRY_INIT(0x0092, 0, 0xffff),
-	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_TS1]		= GDT_ENTRY_INIT(0x0092, 0, 0),
-	/* 16-bit data */
-	[GDT_ENTRY_PNPBIOS_TS2]		= GDT_ENTRY_INIT(0x0092, 0, 0),
-	/*
-	 * The APM segments have byte granularity and their bases
-	 * are set at run time.  All have 64k limits.
-	 */
-	/* 32-bit code */
-	[GDT_ENTRY_APMBIOS_BASE]	= GDT_ENTRY_INIT(0x409a, 0, 0xffff),
-	/* 16-bit code */
-	[GDT_ENTRY_APMBIOS_BASE+1]	= GDT_ENTRY_INIT(0x009a, 0, 0xffff),
-	/* data */
-	[GDT_ENTRY_APMBIOS_BASE+2]	= GDT_ENTRY_INIT(0x4092, 0, 0xffff),
-
-	[GDT_ENTRY_ESPFIX_SS]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
-	[GDT_ENTRY_PERCPU]		= GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
-	GDT_STACK_CANARY_INIT
-#endif
-} };
-EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
-
 static int __init x86_xsave_setup(char *s)
 {
 	setup_clear_cpu_cap(X86_FEATURE_XSAVE);
@@ -295,6 +241,59 @@ static __always_inline void setup_smap(struct cpuinfo_x86 *c)
 	}
 }
 
+#ifdef CONFIG_X86_64
+static __init int setup_disable_pcid(char *arg)
+{
+	setup_clear_cpu_cap(X86_FEATURE_PCID);
+	setup_clear_cpu_cap(X86_FEATURE_INVPCID);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	if (clone_pgd_mask != ~(pgdval_t)0UL)
+		pax_user_shadow_base = 1UL << TASK_SIZE_MAX_SHIFT;
+#endif
+
+	return 1;
+}
+__setup("nopcid", setup_disable_pcid);
+
+static void setup_pcid(struct cpuinfo_x86 *c)
+{
+	if (!cpu_has(c, X86_FEATURE_PCID)) {
+		clear_cpu_cap(c, X86_FEATURE_INVPCID);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+		if (clone_pgd_mask != ~(pgdval_t)0UL) {
+			pax_open_kernel();
+			pax_user_shadow_base = 1UL << TASK_SIZE_MAX_SHIFT;
+			pax_close_kernel();
+			printk("PAX: slow and weak UDEREF enabled\n");
+		} else
+			printk("PAX: UDEREF disabled\n");
+#endif
+
+		return;
+	}
+
+	printk("PAX: PCID detected\n");
+	set_in_cr4(X86_CR4_PCIDE);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_open_kernel();
+	clone_pgd_mask = ~(pgdval_t)0UL;
+	pax_close_kernel();
+	if (pax_user_shadow_base)
+		printk("PAX: weak UDEREF enabled\n");
+	else {
+		set_cpu_cap(c, X86_FEATURE_STRONGUDEREF);
+		printk("PAX: strong UDEREF enabled\n");
+	}
+#endif
+
+	if (cpu_has(c, X86_FEATURE_INVPCID))
+		printk("PAX: INVPCID detected\n");
+}
+#endif
+
 /*
  * Some CPU features depend on higher CPUID levels, which may not always
  * be available due to CPUID level capping or broken virtualization
@@ -395,7 +394,7 @@ void switch_to_new_gdt(int cpu)
 {
 	struct desc_ptr gdt_descr;
 
-	gdt_descr.address = (long)get_cpu_gdt_table(cpu);
+	gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
 	gdt_descr.size = GDT_SIZE - 1;
 	load_gdt(&gdt_descr);
 	/* Reload the per-cpu base */
@@ -885,6 +884,10 @@ static void identify_cpu(struct cpuinfo_x86 *c)
 	setup_smep(c);
 	setup_smap(c);
 
+#ifdef CONFIG_X86_64
+	setup_pcid(c);
+#endif
+
 	/*
 	 * The vendor-specific functions might have changed features.
 	 * Now we do "generic changes."
@@ -893,6 +896,10 @@ static void identify_cpu(struct cpuinfo_x86 *c)
 	/* Filter out anything that depends on CPUID levels we don't have */
 	filter_cpuid_features(c, true);
 
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
+	setup_clear_cpu_cap(X86_FEATURE_SEP);
+#endif
+
 	/* If the model name is still unset, do table lookup. */
 	if (!c->x86_model_id[0]) {
 		const char *p;
@@ -973,7 +980,7 @@ static void syscall32_cpu_init(void)
 void enable_sep_cpu(void)
 {
 	int cpu = get_cpu();
-	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	struct tss_struct *tss = init_tss + cpu;
 
 	if (!boot_cpu_has(X86_FEATURE_SEP)) {
 		put_cpu();
@@ -1113,14 +1120,16 @@ static __init int setup_disablecpuid(char *arg)
 }
 __setup("clearcpuid=", setup_disablecpuid);
 
+DEFINE_PER_CPU(struct thread_info *, current_tinfo) = &init_task.tinfo;
+EXPORT_PER_CPU_SYMBOL(current_tinfo);
+
 DEFINE_PER_CPU(unsigned long, kernel_stack) =
-	(unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE;
+	(unsigned long)&init_thread_union - 16 + THREAD_SIZE;
 EXPORT_PER_CPU_SYMBOL(kernel_stack);
 
 #ifdef CONFIG_X86_64
-struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table };
-struct desc_ptr debug_idt_descr = { NR_VECTORS * 16 - 1,
-				    (unsigned long) debug_idt_table };
+struct desc_ptr idt_descr __read_only = { NR_VECTORS * 16 - 1, (unsigned long) idt_table };
+const struct desc_ptr debug_idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) debug_idt_table };
 
 DEFINE_PER_CPU_FIRST(union irq_stack_union,
 		     irq_stack_union) __aligned(PAGE_SIZE) __visible;
@@ -1283,7 +1292,7 @@ void cpu_init(void)
 	load_ucode_ap();
 
 	cpu = stack_smp_processor_id();
-	t = &per_cpu(init_tss, cpu);
+	t = init_tss + cpu;
 	oist = &per_cpu(orig_ist, cpu);
 
 #ifdef CONFIG_NUMA
@@ -1318,7 +1327,6 @@ void cpu_init(void)
 	wrmsrl(MSR_KERNEL_GS_BASE, 0);
 	barrier();
 
-	x86_configure_nx();
 	enable_x2apic();
 
 	/*
@@ -1370,7 +1378,7 @@ void cpu_init(void)
 {
 	int cpu = smp_processor_id();
 	struct task_struct *curr = current;
-	struct tss_struct *t = &per_cpu(init_tss, cpu);
+	struct tss_struct *t = init_tss + cpu;
 	struct thread_struct *thread = &curr->thread;
 
 	show_ucode_info_early();
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 9c8f739..902a9c5 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -1026,6 +1026,22 @@ static struct attribute *default_attrs[] = {
 };
 
 #ifdef CONFIG_AMD_NB
+static struct attribute *default_attrs_amd_nb[] = {
+	&type.attr,
+	&level.attr,
+	&coherency_line_size.attr,
+	&physical_line_partition.attr,
+	&ways_of_associativity.attr,
+	&number_of_sets.attr,
+	&size.attr,
+	&shared_cpu_map.attr,
+	&shared_cpu_list.attr,
+	NULL,
+	NULL,
+	NULL,
+	NULL
+};
+
 static struct attribute **amd_l3_attrs(void)
 {
 	static struct attribute **attrs;
@@ -1036,18 +1052,7 @@ static struct attribute **amd_l3_attrs(void)
 
 	n = ARRAY_SIZE(default_attrs);
 
-	if (amd_nb_has_feature(AMD_NB_L3_INDEX_DISABLE))
-		n += 2;
-
-	if (amd_nb_has_feature(AMD_NB_L3_PARTITIONING))
-		n += 1;
-
-	attrs = kzalloc(n * sizeof (struct attribute *), GFP_KERNEL);
-	if (attrs == NULL)
-		return attrs = default_attrs;
-
-	for (n = 0; default_attrs[n]; n++)
-		attrs[n] = default_attrs[n];
+	attrs = default_attrs_amd_nb;
 
 	if (amd_nb_has_feature(AMD_NB_L3_INDEX_DISABLE)) {
 		attrs[n++] = &cache_disable_0.attr;
@@ -1098,6 +1103,13 @@ static struct kobj_type ktype_cache = {
 	.default_attrs	= default_attrs,
 };
 
+#ifdef CONFIG_AMD_NB
+static struct kobj_type ktype_cache_amd_nb = {
+	.sysfs_ops	= &sysfs_ops,
+	.default_attrs	= default_attrs_amd_nb,
+};
+#endif
+
 static struct kobj_type ktype_percpu_entry = {
 	.sysfs_ops	= &sysfs_ops,
 };
@@ -1163,20 +1175,26 @@ static int cache_add_dev(struct device *dev)
 		return retval;
 	}
 
+#ifdef CONFIG_AMD_NB
+	amd_l3_attrs();
+#endif
+
 	for (i = 0; i < num_cache_leaves; i++) {
+		struct kobj_type *ktype;
+
 		this_object = INDEX_KOBJECT_PTR(cpu, i);
 		this_object->cpu = cpu;
 		this_object->index = i;
 
 		this_leaf = CPUID4_INFO_IDX(cpu, i);
 
-		ktype_cache.default_attrs = default_attrs;
+		ktype = &ktype_cache;
 #ifdef CONFIG_AMD_NB
 		if (this_leaf->base.nb)
-			ktype_cache.default_attrs = amd_l3_attrs();
+			ktype = &ktype_cache_amd_nb;
 #endif
 		retval = kobject_init_and_add(&(this_object->kobj),
-					      &ktype_cache,
+					      ktype,
 					      per_cpu(ici_cache_kobject, cpu),
 					      "index%1lu", i);
 		if (unlikely(retval)) {
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 9a79c8d..158c2f1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -45,6 +45,7 @@
 #include <asm/processor.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
+#include <asm/local.h>
 
 #include "mce-internal.h"
 
@@ -259,7 +260,7 @@ static void print_mce(struct mce *m)
 			!(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "",
 				m->cs, m->ip);
 
-		if (m->cs == __KERNEL_CS)
+		if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS)
 			print_symbol("{%s}", m->ip);
 		pr_cont("\n");
 	}
@@ -292,10 +293,10 @@ static void print_mce(struct mce *m)
 
 #define PANIC_TIMEOUT 5 /* 5 seconds */
 
-static atomic_t mce_paniced;
+static atomic_unchecked_t mce_paniced;
 
 static int fake_panic;
-static atomic_t mce_fake_paniced;
+static atomic_unchecked_t mce_fake_paniced;
 
 /* Panic in progress. Enable interrupts and wait for final IPI */
 static void wait_for_panic(void)
@@ -319,7 +320,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 		/*
 		 * Make sure only one CPU runs in machine check panic
 		 */
-		if (atomic_inc_return(&mce_paniced) > 1)
+		if (atomic_inc_return_unchecked(&mce_paniced) > 1)
 			wait_for_panic();
 		barrier();
 
@@ -327,7 +328,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 		console_verbose();
 	} else {
 		/* Don't log too much for fake panic */
-		if (atomic_inc_return(&mce_fake_paniced) > 1)
+		if (atomic_inc_return_unchecked(&mce_fake_paniced) > 1)
 			return;
 	}
 	/* First print corrected ones that are still unlogged */
@@ -366,7 +367,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
 	if (!fake_panic) {
 		if (panic_timeout == 0)
 			panic_timeout = mca_cfg.panic_timeout;
-		panic(msg);
+		panic("%s", msg);
 	} else
 		pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg);
 }
@@ -697,7 +698,7 @@ static int mce_timed_out(u64 *t)
 	 * might have been modified by someone else.
 	 */
 	rmb();
-	if (atomic_read(&mce_paniced))
+	if (atomic_read_unchecked(&mce_paniced))
 		wait_for_panic();
 	if (!mca_cfg.monarch_timeout)
 		goto out;
@@ -1674,7 +1675,7 @@ static void unexpected_machine_check(struct pt_regs *regs, long error_code)
 }
 
 /* Call the installed machine check handler for this CPU setup. */
-void (*machine_check_vector)(struct pt_regs *, long error_code) =
+void (*machine_check_vector)(struct pt_regs *, long error_code) __read_only =
 						unexpected_machine_check;
 
 /*
@@ -1697,7 +1698,9 @@ void mcheck_cpu_init(struct cpuinfo_x86 *c)
 		return;
 	}
 
+	pax_open_kernel();
 	machine_check_vector = do_machine_check;
+	pax_close_kernel();
 
 	__mcheck_cpu_init_generic();
 	__mcheck_cpu_init_vendor(c);
@@ -1711,7 +1714,7 @@ void mcheck_cpu_init(struct cpuinfo_x86 *c)
  */
 
 static DEFINE_SPINLOCK(mce_chrdev_state_lock);
-static int mce_chrdev_open_count;	/* #times opened */
+static local_t mce_chrdev_open_count;	/* #times opened */
 static int mce_chrdev_open_exclu;	/* already open exclusive? */
 
 static int mce_chrdev_open(struct inode *inode, struct file *file)
@@ -1719,7 +1722,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file)
 	spin_lock(&mce_chrdev_state_lock);
 
 	if (mce_chrdev_open_exclu ||
-	    (mce_chrdev_open_count && (file->f_flags & O_EXCL))) {
+	    (local_read(&mce_chrdev_open_count) && (file->f_flags & O_EXCL))) {
 		spin_unlock(&mce_chrdev_state_lock);
 
 		return -EBUSY;
@@ -1727,7 +1730,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file)
 
 	if (file->f_flags & O_EXCL)
 		mce_chrdev_open_exclu = 1;
-	mce_chrdev_open_count++;
+	local_inc(&mce_chrdev_open_count);
 
 	spin_unlock(&mce_chrdev_state_lock);
 
@@ -1738,7 +1741,7 @@ static int mce_chrdev_release(struct inode *inode, struct file *file)
 {
 	spin_lock(&mce_chrdev_state_lock);
 
-	mce_chrdev_open_count--;
+	local_dec(&mce_chrdev_open_count);
 	mce_chrdev_open_exclu = 0;
 
 	spin_unlock(&mce_chrdev_state_lock);
@@ -2414,7 +2417,7 @@ static __init void mce_init_banks(void)
 
 	for (i = 0; i < mca_cfg.banks; i++) {
 		struct mce_bank *b = &mce_banks[i];
-		struct device_attribute *a = &b->attr;
+		device_attribute_no_const *a = &b->attr;
 
 		sysfs_attr_init(&a->attr);
 		a->attr.name	= b->attrname;
@@ -2521,7 +2524,7 @@ struct dentry *mce_get_debugfs_dir(void)
 static void mce_reset(void)
 {
 	cpu_missing = 0;
-	atomic_set(&mce_fake_paniced, 0);
+	atomic_set_unchecked(&mce_fake_paniced, 0);
 	atomic_set(&mce_executing, 0);
 	atomic_set(&mce_callin, 0);
 	atomic_set(&global_nwo, 0);
diff --git a/arch/x86/kernel/cpu/mcheck/p5.c b/arch/x86/kernel/cpu/mcheck/p5.c
index a304298..49b6d06 100644
--- a/arch/x86/kernel/cpu/mcheck/p5.c
+++ b/arch/x86/kernel/cpu/mcheck/p5.c
@@ -10,6 +10,7 @@
 #include <asm/processor.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
+#include <asm/pgtable.h>
 
 /* By default disabled */
 int mce_p5_enabled __read_mostly;
@@ -48,7 +49,9 @@ void intel_p5_mcheck_init(struct cpuinfo_x86 *c)
 	if (!cpu_has(c, X86_FEATURE_MCE))
 		return;
 
+	pax_open_kernel();
 	machine_check_vector = pentium_machine_check;
+	pax_close_kernel();
 	/* Make sure the vector pointer is visible before we enable MCEs: */
 	wmb();
 
diff --git a/arch/x86/kernel/cpu/mcheck/winchip.c b/arch/x86/kernel/cpu/mcheck/winchip.c
index 7dc5564..1273569 100644
--- a/arch/x86/kernel/cpu/mcheck/winchip.c
+++ b/arch/x86/kernel/cpu/mcheck/winchip.c
@@ -9,6 +9,7 @@
 #include <asm/processor.h>
 #include <asm/mce.h>
 #include <asm/msr.h>
+#include <asm/pgtable.h>
 
 /* Machine check handler for WinChip C6: */
 static void winchip_machine_check(struct pt_regs *regs, long error_code)
@@ -22,7 +23,9 @@ void winchip_mcheck_init(struct cpuinfo_x86 *c)
 {
 	u32 lo, hi;
 
+	pax_open_kernel();
 	machine_check_vector = winchip_machine_check;
+	pax_close_kernel();
 	/* Make sure the vector pointer is visible before we enable MCEs: */
 	wmb();
 
diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
index dd9d619..86e1d81 100644
--- a/arch/x86/kernel/cpu/microcode/core.c
+++ b/arch/x86/kernel/cpu/microcode/core.c
@@ -516,7 +516,7 @@ mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __refdata mc_cpu_notifier = {
+static struct notifier_block mc_cpu_notifier = {
 	.notifier_call	= mc_cpu_callback,
 };
 
diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
index a276fa7..e66810f 100644
--- a/arch/x86/kernel/cpu/microcode/intel.c
+++ b/arch/x86/kernel/cpu/microcode/intel.c
@@ -293,13 +293,13 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device,
 
 static int get_ucode_user(void *to, const void *from, size_t n)
 {
-	return copy_from_user(to, from, n);
+	return copy_from_user(to, (const void __force_user *)from, n);
 }
 
 static enum ucode_state
 request_microcode_user(int cpu, const void __user *buf, size_t size)
 {
-	return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user);
+	return generic_load_microcode(cpu, (__force_kernel void *)buf, size, &get_ucode_user);
 }
 
 static void microcode_fini_cpu(int cpu)
diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
index f961de9..8a9d332 100644
--- a/arch/x86/kernel/cpu/mtrr/main.c
+++ b/arch/x86/kernel/cpu/mtrr/main.c
@@ -66,7 +66,7 @@ static DEFINE_MUTEX(mtrr_mutex);
 u64 size_or_mask, size_and_mask;
 static bool mtrr_aps_delayed_init;
 
-static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM];
+static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM] __read_only;
 
 const struct mtrr_ops *mtrr_if;
 
diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h
index df5e41f..816c719 100644
--- a/arch/x86/kernel/cpu/mtrr/mtrr.h
+++ b/arch/x86/kernel/cpu/mtrr/mtrr.h
@@ -25,7 +25,7 @@ struct mtrr_ops {
 	int	(*validate_add_page)(unsigned long base, unsigned long size,
 				     unsigned int type);
 	int	(*have_wrcomb)(void);
-};
+} __do_const;
 
 extern int generic_get_free_region(unsigned long base, unsigned long size,
 				   int replace_reg);
diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 2879ecd..bb8c80b 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1372,7 +1372,7 @@ static void __init pmu_check_apic(void)
 
 }
 
-static struct attribute_group x86_pmu_format_group = {
+static attribute_group_no_const x86_pmu_format_group = {
 	.name = "format",
 	.attrs = NULL,
 };
@@ -1471,7 +1471,7 @@ static struct attribute *events_attr[] = {
 	NULL,
 };
 
-static struct attribute_group x86_pmu_events_group = {
+static attribute_group_no_const x86_pmu_events_group = {
 	.name = "events",
 	.attrs = events_attr,
 };
@@ -1995,7 +1995,7 @@ static unsigned long get_segment_base(unsigned int segment)
 		if (idx > GDT_ENTRIES)
 			return 0;
 
-		desc = __this_cpu_ptr(&gdt_page.gdt[0]);
+		desc = get_cpu_gdt_table(smp_processor_id());
 	}
 
 	return get_desc_base(desc + idx);
@@ -2085,7 +2085,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
 			break;
 
 		perf_callchain_store(entry, frame.return_address);
-		fp = frame.next_frame;
+		fp = (const void __force_user *)frame.next_frame;
 	}
 }
 
diff --git a/arch/x86/kernel/cpu/perf_event_amd_iommu.c b/arch/x86/kernel/cpu/perf_event_amd_iommu.c
index 639d128..e92d7e5 100644
--- a/arch/x86/kernel/cpu/perf_event_amd_iommu.c
+++ b/arch/x86/kernel/cpu/perf_event_amd_iommu.c
@@ -405,7 +405,7 @@ static void perf_iommu_del(struct perf_event *event, int flags)
 static __init int _init_events_attrs(struct perf_amd_iommu *perf_iommu)
 {
 	struct attribute **attrs;
-	struct attribute_group *attr_group;
+	attribute_group_no_const *attr_group;
 	int i = 0, j;
 
 	while (amd_iommu_v2_event_descs[i].attr.attr.name)
diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
index 2502d0d..e5cc05c 100644
--- a/arch/x86/kernel/cpu/perf_event_intel.c
+++ b/arch/x86/kernel/cpu/perf_event_intel.c
@@ -2353,10 +2353,10 @@ __init int intel_pmu_init(void)
 		x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
 
 	if (boot_cpu_has(X86_FEATURE_PDCM)) {
-		u64 capabilities;
+		u64 capabilities = x86_pmu.intel_cap.capabilities;
 
-		rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
-		x86_pmu.intel_cap.capabilities = capabilities;
+		if (rdmsrl_safe(MSR_IA32_PERF_CAPABILITIES, &x86_pmu.intel_cap.capabilities))
+			x86_pmu.intel_cap.capabilities = capabilities;
 	}
 
 	intel_ds_init();
diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
index 619f769..d510008 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
@@ -449,7 +449,7 @@ static struct attribute *rapl_events_hsw_attr[] = {
 	NULL,
 };
 
-static struct attribute_group rapl_pmu_events_group = {
+static attribute_group_no_const rapl_pmu_events_group __read_only = {
 	.name = "events",
 	.attrs = NULL, /* patched at runtime */
 };
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
index ae6552a..b5be2d3 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
@@ -3694,7 +3694,7 @@ static void __init uncore_types_exit(struct intel_uncore_type **types)
 static int __init uncore_type_init(struct intel_uncore_type *type)
 {
 	struct intel_uncore_pmu *pmus;
-	struct attribute_group *attr_group;
+	attribute_group_no_const *attr_group;
 	struct attribute **attrs;
 	int i, j;
 
diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.h b/arch/x86/kernel/cpu/perf_event_intel_uncore.h
index 90236f0..54cb20d 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.h
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.h
@@ -503,7 +503,7 @@ struct intel_uncore_box {
 struct uncore_event_desc {
 	struct kobj_attribute attr;
 	const char *config;
-};
+} __do_const;
 
 #define INTEL_UNCORE_EVENT_DESC(_name, _config)			\
 {								\
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index 3225ae6c..ee3c6db 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -170,7 +170,7 @@ static int cpuid_class_cpu_callback(struct notifier_block *nfb,
 	return notifier_from_errno(err);
 }
 
-static struct notifier_block __refdata cpuid_class_cpu_notifier =
+static struct notifier_block cpuid_class_cpu_notifier =
 {
 	.notifier_call = cpuid_class_cpu_callback,
 };
diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 507de80..ebaae2a 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -58,7 +58,7 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs)
 #ifdef CONFIG_X86_32
 	struct pt_regs fixed_regs;
 
-	if (!user_mode_vm(regs)) {
+	if (!user_mode(regs)) {
 		crash_fixup_ss_esp(&fixed_regs, regs);
 		regs = &fixed_regs;
 	}
diff --git a/arch/x86/kernel/crash_dump_64.c b/arch/x86/kernel/crash_dump_64.c
index afa64ad..dce67dd 100644
--- a/arch/x86/kernel/crash_dump_64.c
+++ b/arch/x86/kernel/crash_dump_64.c
@@ -36,7 +36,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
 		return -ENOMEM;
 
 	if (userbuf) {
-		if (copy_to_user(buf, vaddr + offset, csize)) {
+		if (copy_to_user((char __force_user *)buf, vaddr + offset, csize)) {
 			iounmap(vaddr);
 			return -EFAULT;
 		}
diff --git a/arch/x86/kernel/doublefault.c b/arch/x86/kernel/doublefault.c
index f6dfd93..892ade4 100644
--- a/arch/x86/kernel/doublefault.c
+++ b/arch/x86/kernel/doublefault.c
@@ -12,7 +12,7 @@
 
 #define DOUBLEFAULT_STACKSIZE (1024)
 static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE];
-#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE)
+#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2)
 
 #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM)
 
@@ -22,7 +22,7 @@ static void doublefault_fn(void)
 	unsigned long gdt, tss;
 
 	native_store_gdt(&gdt_desc);
-	gdt = gdt_desc.address;
+	gdt = (unsigned long)gdt_desc.address;
 
 	printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size);
 
@@ -59,10 +59,10 @@ struct tss_struct doublefault_tss __cacheline_aligned = {
 		/* 0x2 bit is always set */
 		.flags		= X86_EFLAGS_SF | 0x2,
 		.sp		= STACK_START,
-		.es		= __USER_DS,
+		.es		= __KERNEL_DS,
 		.cs		= __KERNEL_CS,
 		.ss		= __KERNEL_DS,
-		.ds		= __USER_DS,
+		.ds		= __KERNEL_DS,
 		.fs		= __KERNEL_PERCPU,
 
 		.__cr3		= __pa_nodebug(swapper_pg_dir),
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index b74ebc7..6dbb0c5 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -2,6 +2,9 @@
  *  Copyright (C) 1991, 1992  Linus Torvalds
  *  Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
  */
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+#define __INCLUDED_BY_HIDESYM 1
+#endif
 #include <linux/kallsyms.h>
 #include <linux/kprobes.h>
 #include <linux/uaccess.h>
@@ -40,16 +43,14 @@ void printk_address(unsigned long address)
 static void
 print_ftrace_graph_addr(unsigned long addr, void *data,
 			const struct stacktrace_ops *ops,
-			struct thread_info *tinfo, int *graph)
+			struct task_struct *task, int *graph)
 {
-	struct task_struct *task;
 	unsigned long ret_addr;
 	int index;
 
 	if (addr != (unsigned long)return_to_handler)
 		return;
 
-	task = tinfo->task;
 	index = task->curr_ret_stack;
 
 	if (!task->ret_stack || index < *graph)
@@ -66,7 +67,7 @@ print_ftrace_graph_addr(unsigned long addr, void *data,
 static inline void
 print_ftrace_graph_addr(unsigned long addr, void *data,
 			const struct stacktrace_ops *ops,
-			struct thread_info *tinfo, int *graph)
+			struct task_struct *task, int *graph)
 { }
 #endif
 
@@ -77,10 +78,8 @@ print_ftrace_graph_addr(unsigned long addr, void *data,
  * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
  */
 
-static inline int valid_stack_ptr(struct thread_info *tinfo,
-			void *p, unsigned int size, void *end)
+static inline int valid_stack_ptr(void *t, void *p, unsigned int size, void *end)
 {
-	void *t = tinfo;
 	if (end) {
 		if (p < end && p >= (end-THREAD_SIZE))
 			return 1;
@@ -91,14 +90,14 @@ static inline int valid_stack_ptr(struct thread_info *tinfo,
 }
 
 unsigned long
-print_context_stack(struct thread_info *tinfo,
+print_context_stack(struct task_struct *task, void *stack_start,
 		unsigned long *stack, unsigned long bp,
 		const struct stacktrace_ops *ops, void *data,
 		unsigned long *end, int *graph)
 {
 	struct stack_frame *frame = (struct stack_frame *)bp;
 
-	while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
+	while (valid_stack_ptr(stack_start, stack, sizeof(*stack), end)) {
 		unsigned long addr;
 
 		addr = *stack;
@@ -110,7 +109,7 @@ print_context_stack(struct thread_info *tinfo,
 			} else {
 				ops->address(data, addr, 0);
 			}
-			print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
+			print_ftrace_graph_addr(addr, data, ops, task, graph);
 		}
 		stack++;
 	}
@@ -119,7 +118,7 @@ print_context_stack(struct thread_info *tinfo,
 EXPORT_SYMBOL_GPL(print_context_stack);
 
 unsigned long
-print_context_stack_bp(struct thread_info *tinfo,
+print_context_stack_bp(struct task_struct *task, void *stack_start,
 		       unsigned long *stack, unsigned long bp,
 		       const struct stacktrace_ops *ops, void *data,
 		       unsigned long *end, int *graph)
@@ -127,7 +126,7 @@ print_context_stack_bp(struct thread_info *tinfo,
 	struct stack_frame *frame = (struct stack_frame *)bp;
 	unsigned long *ret_addr = &frame->return_address;
 
-	while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
+	while (valid_stack_ptr(stack_start, ret_addr, sizeof(*ret_addr), end)) {
 		unsigned long addr = *ret_addr;
 
 		if (!__kernel_text_address(addr))
@@ -136,7 +135,7 @@ print_context_stack_bp(struct thread_info *tinfo,
 		ops->address(data, addr, 1);
 		frame = frame->next_frame;
 		ret_addr = &frame->return_address;
-		print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
+		print_ftrace_graph_addr(addr, data, ops, task, graph);
 	}
 
 	return (unsigned long)frame;
@@ -155,7 +154,7 @@ static int print_trace_stack(void *data, char *name)
 static void print_trace_address(void *data, unsigned long addr, int reliable)
 {
 	touch_nmi_watchdog();
-	printk(data);
+	printk("%s", (char *)data);
 	printk_stack_address(addr, reliable);
 }
 
@@ -225,6 +224,8 @@ unsigned long oops_begin(void)
 EXPORT_SYMBOL_GPL(oops_begin);
 NOKPROBE_SYMBOL(oops_begin);
 
+extern void gr_handle_kernel_exploit(void);
+
 void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
 {
 	if (regs && kexec_should_crash(current))
@@ -246,7 +247,10 @@ void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
 		panic("Fatal exception in interrupt");
 	if (panic_on_oops)
 		panic("Fatal exception");
-	do_exit(signr);
+
+	gr_handle_kernel_exploit();
+
+	do_group_exit(signr);
 }
 NOKPROBE_SYMBOL(oops_end);
 
@@ -275,7 +279,7 @@ int __die(const char *str, struct pt_regs *regs, long err)
 	print_modules();
 	show_regs(regs);
 #ifdef CONFIG_X86_32
-	if (user_mode_vm(regs)) {
+	if (user_mode(regs)) {
 		sp = regs->sp;
 		ss = regs->ss & 0xffff;
 	} else {
@@ -304,7 +308,7 @@ void die(const char *str, struct pt_regs *regs, long err)
 	unsigned long flags = oops_begin();
 	int sig = SIGSEGV;
 
-	if (!user_mode_vm(regs))
+	if (!user_mode(regs))
 		report_bug(regs->ip, regs);
 
 	if (__die(str, regs, err))
diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index 5abd4cd..c65733b 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -61,15 +61,14 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 		bp = stack_frame(task, regs);
 
 	for (;;) {
-		struct thread_info *context;
+		void *stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1));
 		void *end_stack;
 
 		end_stack = is_hardirq_stack(stack, cpu);
 		if (!end_stack)
 			end_stack = is_softirq_stack(stack, cpu);
 
-		context = task_thread_info(task);
-		bp = ops->walk_stack(context, stack, bp, ops, data,
+		bp = ops->walk_stack(task, stack_start, stack, bp, ops, data,
 				     end_stack, &graph);
 
 		/* Stop if not on irq stack */
@@ -123,27 +122,28 @@ void show_regs(struct pt_regs *regs)
 	int i;
 
 	show_regs_print_info(KERN_EMERG);
-	__show_regs(regs, !user_mode_vm(regs));
+	__show_regs(regs, !user_mode(regs));
 
 	/*
 	 * When in-kernel, we also print out the stack and code at the
 	 * time of the fault..
 	 */
-	if (!user_mode_vm(regs)) {
+	if (!user_mode(regs)) {
 		unsigned int code_prologue = code_bytes * 43 / 64;
 		unsigned int code_len = code_bytes;
 		unsigned char c;
 		u8 *ip;
+		unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(0)[(0xffff & regs->cs) >> 3]);
 
 		pr_emerg("Stack:\n");
 		show_stack_log_lvl(NULL, regs, &regs->sp, 0, KERN_EMERG);
 
 		pr_emerg("Code:");
 
-		ip = (u8 *)regs->ip - code_prologue;
+		ip = (u8 *)regs->ip - code_prologue + cs_base;
 		if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {
 			/* try starting at IP */
-			ip = (u8 *)regs->ip;
+			ip = (u8 *)regs->ip + cs_base;
 			code_len = code_len - code_prologue + 1;
 		}
 		for (i = 0; i < code_len; i++, ip++) {
@@ -152,7 +152,7 @@ void show_regs(struct pt_regs *regs)
 				pr_cont("  Bad EIP value.");
 				break;
 			}
-			if (ip == (u8 *)regs->ip)
+			if (ip == (u8 *)regs->ip + cs_base)
 				pr_cont(" <%02x>", c);
 			else
 				pr_cont(" %02x", c);
@@ -165,6 +165,7 @@ int is_valid_bugaddr(unsigned long ip)
 {
 	unsigned short ud2;
 
+	ip = ktla_ktva(ip);
 	if (ip < PAGE_OFFSET)
 		return 0;
 	if (probe_kernel_address((unsigned short *)ip, ud2))
@@ -172,3 +173,15 @@ int is_valid_bugaddr(unsigned long ip)
 
 	return ud2 == 0x0b0f;
 }
+
+#if defined(CONFIG_PAX_MEMORY_STACKLEAK) || defined(CONFIG_PAX_USERCOPY)
+void pax_check_alloca(unsigned long size)
+{
+	unsigned long sp = (unsigned long)&sp, stack_left;
+
+	/* all kernel stacks are of the same size */
+	stack_left = sp & (THREAD_SIZE - 1);
+	BUG_ON(stack_left < 256 || size >= stack_left - 256);
+}
+EXPORT_SYMBOL(pax_check_alloca);
+#endif
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 1abcb50..6c8d702 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -154,12 +154,12 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 		const struct stacktrace_ops *ops, void *data)
 {
 	const unsigned cpu = get_cpu();
-	struct thread_info *tinfo;
 	unsigned long *irq_stack = (unsigned long *)per_cpu(irq_stack_ptr, cpu);
 	unsigned long dummy;
 	unsigned used = 0;
 	int graph = 0;
 	int done = 0;
+	void *stack_start;
 
 	if (!task)
 		task = current;
@@ -180,7 +180,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 	 * current stack address. If the stacks consist of nested
 	 * exceptions
 	 */
-	tinfo = task_thread_info(task);
 	while (!done) {
 		unsigned long *stack_end;
 		enum stack_type stype;
@@ -203,7 +202,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 			if (ops->stack(data, id) < 0)
 				break;
 
-			bp = ops->walk_stack(tinfo, stack, bp, ops,
+			bp = ops->walk_stack(task, stack_end - EXCEPTION_STKSZ, stack, bp, ops,
 					     data, stack_end, &graph);
 			ops->stack(data, "<EOE>");
 			/*
@@ -211,6 +210,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 			 * second-to-last pointer (index -2 to end) in the
 			 * exception stack:
 			 */
+			if ((u16)stack_end[-1] != __KERNEL_DS)
+				goto out;
 			stack = (unsigned long *) stack_end[-2];
 			done = 0;
 			break;
@@ -219,7 +220,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 
 			if (ops->stack(data, "IRQ") < 0)
 				break;
-			bp = ops->walk_stack(tinfo, stack, bp,
+			bp = ops->walk_stack(task, irq_stack, stack, bp,
 				     ops, data, stack_end, &graph);
 			/*
 			 * We link to the next stack (which would be
@@ -241,7 +242,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
 	/*
 	 * This handles the process stack:
 	 */
-	bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph);
+	stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1));
+	bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph);
+out:
 	put_cpu();
 }
 EXPORT_SYMBOL(dump_trace);
@@ -350,3 +353,50 @@ int is_valid_bugaddr(unsigned long ip)
 
 	return ud2 == 0x0b0f;
 }
+
+#if defined(CONFIG_PAX_MEMORY_STACKLEAK) || defined(CONFIG_PAX_USERCOPY)
+void pax_check_alloca(unsigned long size)
+{
+	unsigned long sp = (unsigned long)&sp, stack_start, stack_end;
+	unsigned cpu, used;
+	char *id;
+
+	/* check the process stack first */
+	stack_start = (unsigned long)task_stack_page(current);
+	stack_end = stack_start + THREAD_SIZE;
+	if (likely(stack_start <= sp && sp < stack_end)) {
+		unsigned long stack_left = sp & (THREAD_SIZE - 1);
+		BUG_ON(stack_left < 256 || size >= stack_left - 256);
+		return;
+	}
+
+	cpu = get_cpu();
+
+	/* check the irq stacks */
+	stack_end = (unsigned long)per_cpu(irq_stack_ptr, cpu);
+	stack_start = stack_end - IRQ_STACK_SIZE;
+	if (stack_start <= sp && sp < stack_end) {
+		unsigned long stack_left = sp & (IRQ_STACK_SIZE - 1);
+		put_cpu();
+		BUG_ON(stack_left < 256 || size >= stack_left - 256);
+		return;
+	}
+
+	/* check the exception stacks */
+	used = 0;
+	stack_end = (unsigned long)in_exception_stack(cpu, sp, &used, &id);
+	stack_start = stack_end - EXCEPTION_STKSZ;
+	if (stack_end && stack_start <= sp && sp < stack_end) {
+		unsigned long stack_left = sp & (EXCEPTION_STKSZ - 1);
+		put_cpu();
+		BUG_ON(stack_left < 256 || size >= stack_left - 256);
+		return;
+	}
+
+	put_cpu();
+
+	/* unknown stack */
+	BUG();
+}
+EXPORT_SYMBOL(pax_check_alloca);
+#endif
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 988c00a..4f673b6 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -803,8 +803,8 @@ unsigned long __init e820_end_of_low_ram_pfn(void)
 
 static void early_panic(char *msg)
 {
-	early_printk(msg);
-	panic(msg);
+	early_printk("%s", msg);
+	panic("%s", msg);
 }
 
 static int userdef __initdata;
diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index 01d1c18..8073693 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -7,6 +7,7 @@
 #include <linux/pci_regs.h>
 #include <linux/pci_ids.h>
 #include <linux/errno.h>
+#include <linux/sched.h>
 #include <asm/io.h>
 #include <asm/processor.h>
 #include <asm/fcntl.h>
diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
index 0d0c9d4..f65b4f6 100644
--- a/arch/x86/kernel/entry_32.S
+++ b/arch/x86/kernel/entry_32.S
@@ -177,13 +177,153 @@
 	/*CFI_REL_OFFSET gs, PT_GS*/
 .endm
 .macro SET_KERNEL_GS reg
+
+#ifdef CONFIG_CC_STACKPROTECTOR
 	movl $(__KERNEL_STACK_CANARY), \reg
+#elif defined(CONFIG_PAX_MEMORY_UDEREF)
+	movl $(__USER_DS), \reg
+#else
+	xorl \reg, \reg
+#endif
+
 	movl \reg, %gs
 .endm
 
 #endif	/* CONFIG_X86_32_LAZY_GS */
 
-.macro SAVE_ALL
+.macro pax_enter_kernel
+#ifdef CONFIG_PAX_KERNEXEC
+	call pax_enter_kernel
+#endif
+.endm
+
+.macro pax_exit_kernel
+#ifdef CONFIG_PAX_KERNEXEC
+	call pax_exit_kernel
+#endif
+.endm
+
+#ifdef CONFIG_PAX_KERNEXEC
+ENTRY(pax_enter_kernel)
+#ifdef CONFIG_PARAVIRT
+	pushl %eax
+	pushl %ecx
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0)
+	mov %eax, %esi
+#else
+	mov %cr0, %esi
+#endif
+	bts $16, %esi
+	jnc 1f
+	mov %cs, %esi
+	cmp $__KERNEL_CS, %esi
+	jz 3f
+	ljmp $__KERNEL_CS, $3f
+1:	ljmp $__KERNEXEC_KERNEL_CS, $2f
+2:
+#ifdef CONFIG_PARAVIRT
+	mov %esi, %eax
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0)
+#else
+	mov %esi, %cr0
+#endif
+3:
+#ifdef CONFIG_PARAVIRT
+	popl %ecx
+	popl %eax
+#endif
+	ret
+ENDPROC(pax_enter_kernel)
+
+ENTRY(pax_exit_kernel)
+#ifdef CONFIG_PARAVIRT
+	pushl %eax
+	pushl %ecx
+#endif
+	mov %cs, %esi
+	cmp $__KERNEXEC_KERNEL_CS, %esi
+	jnz 2f
+#ifdef CONFIG_PARAVIRT
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0);
+	mov %eax, %esi
+#else
+	mov %cr0, %esi
+#endif
+	btr $16, %esi
+	ljmp $__KERNEL_CS, $1f
+1:
+#ifdef CONFIG_PARAVIRT
+	mov %esi, %eax
+	call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0);
+#else
+	mov %esi, %cr0
+#endif
+2:
+#ifdef CONFIG_PARAVIRT
+	popl %ecx
+	popl %eax
+#endif
+	ret
+ENDPROC(pax_exit_kernel)
+#endif
+
+	.macro pax_erase_kstack
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+	call pax_erase_kstack
+#endif
+	.endm
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+/*
+ * ebp: thread_info
+ */
+ENTRY(pax_erase_kstack)
+	pushl %edi
+	pushl %ecx
+	pushl %eax
+
+	mov TI_lowest_stack(%ebp), %edi
+	mov $-0xBEEF, %eax
+	std
+
+1:	mov %edi, %ecx
+	and $THREAD_SIZE_asm - 1, %ecx
+	shr $2, %ecx
+	repne scasl
+	jecxz 2f
+
+	cmp $2*16, %ecx
+	jc 2f
+
+	mov $2*16, %ecx
+	repe scasl
+	jecxz 2f
+	jne 1b
+
+2:	cld
+	mov %esp, %ecx
+	sub %edi, %ecx
+
+	cmp $THREAD_SIZE_asm, %ecx
+	jb 3f
+	ud2
+3:
+
+	shr $2, %ecx
+	rep stosl
+
+	mov TI_task_thread_sp0(%ebp), %edi
+	sub $128, %edi
+	mov %edi, TI_lowest_stack(%ebp)
+
+	popl %eax
+	popl %ecx
+	popl %edi
+	ret
+ENDPROC(pax_erase_kstack)
+#endif
+
+.macro __SAVE_ALL _DS
 	cld
 	PUSH_GS
 	pushl_cfi %fs
@@ -206,7 +346,7 @@
 	CFI_REL_OFFSET ecx, 0
 	pushl_cfi %ebx
 	CFI_REL_OFFSET ebx, 0
-	movl $(__USER_DS), %edx
+	movl $\_DS, %edx
 	movl %edx, %ds
 	movl %edx, %es
 	movl $(__KERNEL_PERCPU), %edx
@@ -214,6 +354,15 @@
 	SET_KERNEL_GS %edx
 .endm
 
+.macro SAVE_ALL
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	__SAVE_ALL __KERNEL_DS
+	pax_enter_kernel
+#else
+	__SAVE_ALL __USER_DS
+#endif
+.endm
+
 .macro RESTORE_INT_REGS
 	popl_cfi %ebx
 	CFI_RESTORE ebx
@@ -297,7 +446,7 @@ ENTRY(ret_from_fork)
 	popfl_cfi
 	jmp syscall_exit
 	CFI_ENDPROC
-END(ret_from_fork)
+ENDPROC(ret_from_fork)
 
 ENTRY(ret_from_kernel_thread)
 	CFI_STARTPROC
@@ -340,7 +489,15 @@ ret_from_intr:
 	andl $SEGMENT_RPL_MASK, %eax
 #endif
 	cmpl $USER_RPL, %eax
+
+#ifdef CONFIG_PAX_KERNEXEC
+	jae resume_userspace
+
+	pax_exit_kernel
+	jmp resume_kernel
+#else
 	jb resume_kernel		# not returning to v8086 or userspace
+#endif
 
 ENTRY(resume_userspace)
 	LOCKDEP_SYS_EXIT
@@ -352,8 +509,8 @@ ENTRY(resume_userspace)
 	andl $_TIF_WORK_MASK, %ecx	# is there any work to be done on
 					# int/exception return?
 	jne work_pending
-	jmp restore_all
-END(ret_from_exception)
+	jmp restore_all_pax
+ENDPROC(ret_from_exception)
 
 #ifdef CONFIG_PREEMPT
 ENTRY(resume_kernel)
@@ -365,7 +522,7 @@ need_resched:
 	jz restore_all
 	call preempt_schedule_irq
 	jmp need_resched
-END(resume_kernel)
+ENDPROC(resume_kernel)
 #endif
 	CFI_ENDPROC
 
@@ -395,30 +552,45 @@ sysenter_past_esp:
 	/*CFI_REL_OFFSET cs, 0*/
 	/*
 	 * Push current_thread_info()->sysenter_return to the stack.
-	 * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
-	 * pushed above; +8 corresponds to copy_thread's esp0 setting.
 	 */
-	pushl_cfi ((TI_sysenter_return)-THREAD_SIZE+8+4*4)(%esp)
+	pushl_cfi $0
 	CFI_REL_OFFSET eip, 0
 
 	pushl_cfi %eax
 	SAVE_ALL
+	GET_THREAD_INFO(%ebp)
+	movl TI_sysenter_return(%ebp),%ebp
+	movl %ebp,PT_EIP(%esp)
 	ENABLE_INTERRUPTS(CLBR_NONE)
 
 /*
  * Load the potential sixth argument from user stack.
  * Careful about security.
  */
+	movl PT_OLDESP(%esp),%ebp
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov PT_OLDSS(%esp),%ds
+1:	movl %ds:(%ebp),%ebp
+	push %ss
+	pop %ds
+#else
 	cmpl $__PAGE_OFFSET-3,%ebp
 	jae syscall_fault
 	ASM_STAC
 1:	movl (%ebp),%ebp
 	ASM_CLAC
+#endif
+
 	movl %ebp,PT_EBP(%esp)
 	_ASM_EXTABLE(1b,syscall_fault)
 
 	GET_THREAD_INFO(%ebp)
 
+#ifdef CONFIG_PAX_RANDKSTACK
+	pax_erase_kstack
+#endif
+
 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
 	jnz sysenter_audit
 sysenter_do_call:
@@ -434,12 +606,24 @@ sysenter_after_call:
 	testl $_TIF_ALLWORK_MASK, %ecx
 	jne sysexit_audit
 sysenter_exit:
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pushl_cfi %eax
+	movl %esp, %eax
+	call pax_randomize_kstack
+	popl_cfi %eax
+#endif
+
+	pax_erase_kstack
+
 /* if something modifies registers it must also disable sysexit */
 	movl PT_EIP(%esp), %edx
 	movl PT_OLDESP(%esp), %ecx
 	xorl %ebp,%ebp
 	TRACE_IRQS_ON
 1:	mov  PT_FS(%esp), %fs
+2:	mov  PT_DS(%esp), %ds
+3:	mov  PT_ES(%esp), %es
 	PTGS_TO_GS
 	ENABLE_INTERRUPTS_SYSEXIT
 
@@ -456,6 +640,9 @@ sysenter_audit:
 	movl %eax,%edx			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_I386,%eax	/* 1st arg: audit arch */
 	call __audit_syscall_entry
+
+	pax_erase_kstack
+
 	pushl_cfi %ebx
 	movl PT_EAX(%esp),%eax		/* reload syscall number */
 	jmp sysenter_do_call
@@ -481,10 +668,16 @@ sysexit_audit:
 
 	CFI_ENDPROC
 .pushsection .fixup,"ax"
-2:	movl $0,PT_FS(%esp)
+4:	movl $0,PT_FS(%esp)
+	jmp 1b
+5:	movl $0,PT_DS(%esp)
+	jmp 1b
+6:	movl $0,PT_ES(%esp)
 	jmp 1b
 .popsection
-	_ASM_EXTABLE(1b,2b)
+	_ASM_EXTABLE(1b,4b)
+	_ASM_EXTABLE(2b,5b)
+	_ASM_EXTABLE(3b,6b)
 	PTGS_TO_GS_EX
 ENDPROC(ia32_sysenter_target)
 
@@ -495,6 +688,11 @@ ENTRY(system_call)
 	pushl_cfi %eax			# save orig_eax
 	SAVE_ALL
 	GET_THREAD_INFO(%ebp)
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pax_erase_kstack
+#endif
+
 					# system call tracing in operation / emulation
 	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
 	jnz syscall_trace_entry
@@ -514,6 +712,15 @@ syscall_exit:
 	testl $_TIF_ALLWORK_MASK, %ecx	# current->work
 	jne syscall_exit_work
 
+restore_all_pax:
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	movl %esp, %eax
+	call pax_randomize_kstack
+#endif
+
+	pax_erase_kstack
+
 restore_all:
 	TRACE_IRQS_IRET
 restore_all_notrace:
@@ -568,14 +775,34 @@ ldt_ss:
  * compensating for the offset by changing to the ESPFIX segment with
  * a base address that matches for the difference.
  */
-#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + (GDT_ENTRY_ESPFIX_SS * 8)
+#define GDT_ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)(%ebx)
 	mov %esp, %edx			/* load kernel esp */
 	mov PT_OLDESP(%esp), %eax	/* load userspace esp */
 	mov %dx, %ax			/* eax: new kernel esp */
 	sub %eax, %edx			/* offset (low word is 0) */
+#ifdef CONFIG_SMP
+	movl PER_CPU_VAR(cpu_number), %ebx
+	shll $PAGE_SHIFT_asm, %ebx
+	addl $cpu_gdt_table, %ebx
+#else
+	movl $cpu_gdt_table, %ebx
+#endif
 	shr $16, %edx
-	mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */
-	mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	mov %cr0, %esi
+	btr $16, %esi
+	mov %esi, %cr0
+#endif
+
+	mov %dl, 4 + GDT_ESPFIX_SS /* bits 16..23 */
+	mov %dh, 7 + GDT_ESPFIX_SS /* bits 24..31 */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	bts $16, %esi
+	mov %esi, %cr0
+#endif
+
 	pushl_cfi $__ESPFIX_SS
 	pushl_cfi %eax			/* new kernel esp */
 	/* Disable interrupts, but do not irqtrace this section: we
@@ -605,20 +832,18 @@ work_resched:
 	movl TI_flags(%ebp), %ecx
 	andl $_TIF_WORK_MASK, %ecx	# is there any work to be done other
 					# than syscall tracing?
-	jz restore_all
+	jz restore_all_pax
 	testb $_TIF_NEED_RESCHED, %cl
 	jnz work_resched
 
 work_notifysig:				# deal with pending signals and
 					# notify-resume requests
+	movl %esp, %eax
 #ifdef CONFIG_VM86
 	testl $X86_EFLAGS_VM, PT_EFLAGS(%esp)
-	movl %esp, %eax
 	jne work_notifysig_v86		# returning to kernel-space or
 					# vm86-space
 1:
-#else
-	movl %esp, %eax
 #endif
 	TRACE_IRQS_ON
 	ENABLE_INTERRUPTS(CLBR_NONE)
@@ -639,7 +864,7 @@ work_notifysig_v86:
 	movl %eax, %esp
 	jmp 1b
 #endif
-END(work_pending)
+ENDPROC(work_pending)
 
 	# perform syscall exit tracing
 	ALIGN
@@ -647,11 +872,14 @@ syscall_trace_entry:
 	movl $-ENOSYS,PT_EAX(%esp)
 	movl %esp, %eax
 	call syscall_trace_enter
+
+	pax_erase_kstack
+
 	/* What it returned is what we'll actually use.  */
 	cmpl $(NR_syscalls), %eax
 	jnae syscall_call
 	jmp syscall_exit
-END(syscall_trace_entry)
+ENDPROC(syscall_trace_entry)
 
 	# perform syscall exit tracing
 	ALIGN
@@ -664,26 +892,30 @@ syscall_exit_work:
 	movl %esp, %eax
 	call syscall_trace_leave
 	jmp resume_userspace
-END(syscall_exit_work)
+ENDPROC(syscall_exit_work)
 	CFI_ENDPROC
 
 	RING0_INT_FRAME			# can't unwind into user space anyway
 syscall_fault:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	push %ss
+	pop %ds
+#endif
 	ASM_CLAC
 	GET_THREAD_INFO(%ebp)
 	movl $-EFAULT,PT_EAX(%esp)
 	jmp resume_userspace
-END(syscall_fault)
+ENDPROC(syscall_fault)
 
 syscall_badsys:
 	movl $-ENOSYS,%eax
 	jmp syscall_after_call
-END(syscall_badsys)
+ENDPROC(syscall_badsys)
 
 sysenter_badsys:
 	movl $-ENOSYS,%eax
 	jmp sysenter_after_call
-END(syscall_badsys)
+ENDPROC(sysenter_badsys)
 	CFI_ENDPROC
 
 .macro FIXUP_ESPFIX_STACK
@@ -696,8 +928,15 @@ END(syscall_badsys)
  */
 #ifdef CONFIG_X86_ESPFIX32
 	/* fixup the stack */
-	mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */
-	mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */
+#ifdef CONFIG_SMP
+	movl PER_CPU_VAR(cpu_number), %ebx
+	shll $PAGE_SHIFT_asm, %ebx
+	addl $cpu_gdt_table, %ebx
+#else
+	movl $cpu_gdt_table, %ebx
+#endif
+	mov 4 + GDT_ESPFIX_SS, %al /* bits 16..23 */
+	mov 7 + GDT_ESPFIX_SS, %ah /* bits 24..31 */
 	shl $16, %eax
 	addl %esp, %eax			/* the adjusted stack pointer */
 	pushl_cfi $__KERNEL_DS
@@ -753,7 +992,7 @@ vector=vector+1
   .endr
 2:	jmp common_interrupt
 .endr
-END(irq_entries_start)
+ENDPROC(irq_entries_start)
 
 .previous
 END(interrupt)
@@ -810,7 +1049,7 @@ ENTRY(coprocessor_error)
 	pushl_cfi $do_coprocessor_error
 	jmp error_code
 	CFI_ENDPROC
-END(coprocessor_error)
+ENDPROC(coprocessor_error)
 
 ENTRY(simd_coprocessor_error)
 	RING0_INT_FRAME
@@ -823,7 +1062,7 @@ ENTRY(simd_coprocessor_error)
 .section .altinstructions,"a"
 	altinstruction_entry 661b, 663f, X86_FEATURE_XMM, 662b-661b, 664f-663f
 .previous
-.section .altinstr_replacement,"ax"
+.section .altinstr_replacement,"a"
 663:	pushl $do_simd_coprocessor_error
 664:
 .previous
@@ -832,7 +1071,7 @@ ENTRY(simd_coprocessor_error)
 #endif
 	jmp error_code
 	CFI_ENDPROC
-END(simd_coprocessor_error)
+ENDPROC(simd_coprocessor_error)
 
 ENTRY(device_not_available)
 	RING0_INT_FRAME
@@ -841,18 +1080,18 @@ ENTRY(device_not_available)
 	pushl_cfi $do_device_not_available
 	jmp error_code
 	CFI_ENDPROC
-END(device_not_available)
+ENDPROC(device_not_available)
 
 #ifdef CONFIG_PARAVIRT
 ENTRY(native_iret)
 	iret
 	_ASM_EXTABLE(native_iret, iret_exc)
-END(native_iret)
+ENDPROC(native_iret)
 
 ENTRY(native_irq_enable_sysexit)
 	sti
 	sysexit
-END(native_irq_enable_sysexit)
+ENDPROC(native_irq_enable_sysexit)
 #endif
 
 ENTRY(overflow)
@@ -862,7 +1101,7 @@ ENTRY(overflow)
 	pushl_cfi $do_overflow
 	jmp error_code
 	CFI_ENDPROC
-END(overflow)
+ENDPROC(overflow)
 
 ENTRY(bounds)
 	RING0_INT_FRAME
@@ -871,7 +1110,7 @@ ENTRY(bounds)
 	pushl_cfi $do_bounds
 	jmp error_code
 	CFI_ENDPROC
-END(bounds)
+ENDPROC(bounds)
 
 ENTRY(invalid_op)
 	RING0_INT_FRAME
@@ -880,7 +1119,7 @@ ENTRY(invalid_op)
 	pushl_cfi $do_invalid_op
 	jmp error_code
 	CFI_ENDPROC
-END(invalid_op)
+ENDPROC(invalid_op)
 
 ENTRY(coprocessor_segment_overrun)
 	RING0_INT_FRAME
@@ -889,7 +1128,7 @@ ENTRY(coprocessor_segment_overrun)
 	pushl_cfi $do_coprocessor_segment_overrun
 	jmp error_code
 	CFI_ENDPROC
-END(coprocessor_segment_overrun)
+ENDPROC(coprocessor_segment_overrun)
 
 ENTRY(invalid_TSS)
 	RING0_EC_FRAME
@@ -897,7 +1136,7 @@ ENTRY(invalid_TSS)
 	pushl_cfi $do_invalid_TSS
 	jmp error_code
 	CFI_ENDPROC
-END(invalid_TSS)
+ENDPROC(invalid_TSS)
 
 ENTRY(segment_not_present)
 	RING0_EC_FRAME
@@ -905,7 +1144,7 @@ ENTRY(segment_not_present)
 	pushl_cfi $do_segment_not_present
 	jmp error_code
 	CFI_ENDPROC
-END(segment_not_present)
+ENDPROC(segment_not_present)
 
 ENTRY(stack_segment)
 	RING0_EC_FRAME
@@ -913,7 +1152,7 @@ ENTRY(stack_segment)
 	pushl_cfi $do_stack_segment
 	jmp error_code
 	CFI_ENDPROC
-END(stack_segment)
+ENDPROC(stack_segment)
 
 ENTRY(alignment_check)
 	RING0_EC_FRAME
@@ -921,7 +1160,7 @@ ENTRY(alignment_check)
 	pushl_cfi $do_alignment_check
 	jmp error_code
 	CFI_ENDPROC
-END(alignment_check)
+ENDPROC(alignment_check)
 
 ENTRY(divide_error)
 	RING0_INT_FRAME
@@ -930,7 +1169,7 @@ ENTRY(divide_error)
 	pushl_cfi $do_divide_error
 	jmp error_code
 	CFI_ENDPROC
-END(divide_error)
+ENDPROC(divide_error)
 
 #ifdef CONFIG_X86_MCE
 ENTRY(machine_check)
@@ -940,7 +1179,7 @@ ENTRY(machine_check)
 	pushl_cfi machine_check_vector
 	jmp error_code
 	CFI_ENDPROC
-END(machine_check)
+ENDPROC(machine_check)
 #endif
 
 ENTRY(spurious_interrupt_bug)
@@ -950,7 +1189,7 @@ ENTRY(spurious_interrupt_bug)
 	pushl_cfi $do_spurious_interrupt_bug
 	jmp error_code
 	CFI_ENDPROC
-END(spurious_interrupt_bug)
+ENDPROC(spurious_interrupt_bug)
 
 #ifdef CONFIG_XEN
 /* Xen doesn't set %esp to be precisely what the normal sysenter
@@ -1056,7 +1295,7 @@ BUILD_INTERRUPT3(hyperv_callback_vector, HYPERVISOR_CALLBACK_VECTOR,
 
 ENTRY(mcount)
 	ret
-END(mcount)
+ENDPROC(mcount)
 
 ENTRY(ftrace_caller)
 	cmpl $0, function_trace_stop
@@ -1089,7 +1328,7 @@ ftrace_graph_call:
 .globl ftrace_stub
 ftrace_stub:
 	ret
-END(ftrace_caller)
+ENDPROC(ftrace_caller)
 
 ENTRY(ftrace_regs_caller)
 	pushf	/* push flags before compare (in cs location) */
@@ -1193,7 +1432,7 @@ trace:
 	popl %ecx
 	popl %eax
 	jmp ftrace_stub
-END(mcount)
+ENDPROC(mcount)
 #endif /* CONFIG_DYNAMIC_FTRACE */
 #endif /* CONFIG_FUNCTION_TRACER */
 
@@ -1211,7 +1450,7 @@ ENTRY(ftrace_graph_caller)
 	popl %ecx
 	popl %eax
 	ret
-END(ftrace_graph_caller)
+ENDPROC(ftrace_graph_caller)
 
 .globl return_to_handler
 return_to_handler:
@@ -1272,15 +1511,18 @@ error_code:
 	movl $-1, PT_ORIG_EAX(%esp)	# no syscall to restart
 	REG_TO_PTGS %ecx
 	SET_KERNEL_GS %ecx
-	movl $(__USER_DS), %ecx
+	movl $(__KERNEL_DS), %ecx
 	movl %ecx, %ds
 	movl %ecx, %es
+
+	pax_enter_kernel
+
 	TRACE_IRQS_OFF
 	movl %esp,%eax			# pt_regs pointer
 	call *%edi
 	jmp ret_from_exception
 	CFI_ENDPROC
-END(page_fault)
+ENDPROC(page_fault)
 
 /*
  * Debug traps and NMI can happen at the one SYSENTER instruction
@@ -1323,7 +1565,7 @@ debug_stack_correct:
 	call do_debug
 	jmp ret_from_exception
 	CFI_ENDPROC
-END(debug)
+ENDPROC(debug)
 
 /*
  * NMI is doubly nasty. It can happen _while_ we're handling
@@ -1363,6 +1605,9 @@ nmi_stack_correct:
 	xorl %edx,%edx		# zero error code
 	movl %esp,%eax		# pt_regs pointer
 	call do_nmi
+
+	pax_exit_kernel
+
 	jmp restore_all_notrace
 	CFI_ENDPROC
 
@@ -1400,13 +1645,16 @@ nmi_espfix_stack:
 	FIXUP_ESPFIX_STACK		# %eax == %esp
 	xorl %edx,%edx			# zero error code
 	call do_nmi
+
+	pax_exit_kernel
+
 	RESTORE_REGS
 	lss 12+4(%esp), %esp		# back to espfix stack
 	CFI_ADJUST_CFA_OFFSET -24
 	jmp irq_return
 #endif
 	CFI_ENDPROC
-END(nmi)
+ENDPROC(nmi)
 
 ENTRY(int3)
 	RING0_INT_FRAME
@@ -1419,14 +1667,14 @@ ENTRY(int3)
 	call do_int3
 	jmp ret_from_exception
 	CFI_ENDPROC
-END(int3)
+ENDPROC(int3)
 
 ENTRY(general_protection)
 	RING0_EC_FRAME
 	pushl_cfi $do_general_protection
 	jmp error_code
 	CFI_ENDPROC
-END(general_protection)
+ENDPROC(general_protection)
 
 #ifdef CONFIG_KVM_GUEST
 ENTRY(async_page_fault)
@@ -1435,6 +1683,6 @@ ENTRY(async_page_fault)
 	pushl_cfi $do_async_page_fault
 	jmp error_code
 	CFI_ENDPROC
-END(async_page_fault)
+ENDPROC(async_page_fault)
 #endif
 
diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index c844f08..966a50e 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -59,6 +59,8 @@
 #include <asm/smap.h>
 #include <asm/pgtable_types.h>
 #include <linux/err.h>
+#include <asm/pgtable.h>
+#include <asm/alternative-asm.h>
 
 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this.  */
 #include <linux/elf-em.h>
@@ -81,6 +83,430 @@ ENTRY(native_usergs_sysret64)
 ENDPROC(native_usergs_sysret64)
 #endif /* CONFIG_PARAVIRT */
 
+	.macro ljmpq sel, off
+#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2) || defined (CONFIG_MATOM)
+	.byte 0x48; ljmp *1234f(%rip)
+	.pushsection .rodata
+	.align 16
+	1234: .quad \off; .word \sel
+	.popsection
+#else
+	pushq $\sel
+	pushq $\off
+	lretq
+#endif
+	.endm
+
+	.macro pax_enter_kernel
+	pax_set_fptr_mask
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	call pax_enter_kernel
+#endif
+	.endm
+
+	.macro pax_exit_kernel
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	call pax_exit_kernel
+#endif
+
+	.endm
+
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+ENTRY(pax_enter_kernel)
+	pushq %rdi
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+	GET_CR0_INTO_RDI
+	bts $16,%rdi
+	jnc 3f
+	mov %cs,%edi
+	cmp $__KERNEL_CS,%edi
+	jnz 2f
+1:
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	661: jmp 111f
+	.pushsection .altinstr_replacement, "a"
+	662: ASM_NOP2
+	.popsection
+	.pushsection .altinstructions, "a"
+	altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
+	.popsection
+	GET_CR3_INTO_RDI
+	cmp $0,%dil
+	jnz 112f
+	mov $__KERNEL_DS,%edi
+	mov %edi,%ss
+	jmp 111f
+112:	cmp $1,%dil
+	jz 113f
+	ud2
+113:	sub $4097,%rdi
+	bts $63,%rdi
+	SET_RDI_INTO_CR3
+	mov $__UDEREF_KERNEL_DS,%edi
+	mov %edi,%ss
+111:
+#endif
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI)
+#endif
+
+	popq %rdi
+	pax_force_retaddr
+	retq
+
+#ifdef CONFIG_PAX_KERNEXEC
+2:	ljmpq __KERNEL_CS,1b
+3:	ljmpq __KERNEXEC_KERNEL_CS,4f
+4:	SET_RDI_INTO_CR0
+	jmp 1b
+#endif
+ENDPROC(pax_enter_kernel)
+
+ENTRY(pax_exit_kernel)
+	pushq %rdi
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+	mov %cs,%rdi
+	cmp $__KERNEXEC_KERNEL_CS,%edi
+	jz 2f
+	GET_CR0_INTO_RDI
+	bts $16,%rdi
+	jnc 4f
+1:
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	661: jmp 111f
+	.pushsection .altinstr_replacement, "a"
+	662: ASM_NOP2
+	.popsection
+	.pushsection .altinstructions, "a"
+	altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
+	.popsection
+	mov %ss,%edi
+	cmp $__UDEREF_KERNEL_DS,%edi
+	jnz 111f
+	GET_CR3_INTO_RDI
+	cmp $0,%dil
+	jz 112f
+	ud2
+112:	add $4097,%rdi
+	bts $63,%rdi
+	SET_RDI_INTO_CR3
+	mov $__KERNEL_DS,%edi
+	mov %edi,%ss
+111:
+#endif
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI);
+#endif
+
+	popq %rdi
+	pax_force_retaddr
+	retq
+
+#ifdef CONFIG_PAX_KERNEXEC
+2:	GET_CR0_INTO_RDI
+	btr $16,%rdi
+	jnc 4f
+	ljmpq __KERNEL_CS,3f
+3:	SET_RDI_INTO_CR0
+	jmp 1b
+4:	ud2
+	jmp 4b
+#endif
+ENDPROC(pax_exit_kernel)
+#endif
+
+	.macro pax_enter_kernel_user
+	pax_set_fptr_mask
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_enter_kernel_user
+#endif
+	.endm
+
+	.macro pax_exit_kernel_user
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	call pax_exit_kernel_user
+#endif
+#ifdef CONFIG_PAX_RANDKSTACK
+	pushq %rax
+	pushq %r11
+	call pax_randomize_kstack
+	popq %r11
+	popq %rax
+#endif
+	.endm
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+ENTRY(pax_enter_kernel_user)
+	pushq %rdi
+	pushq %rbx
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+	661: jmp 111f
+	.pushsection .altinstr_replacement, "a"
+	662: ASM_NOP2
+	.popsection
+	.pushsection .altinstructions, "a"
+	altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
+	.popsection
+	GET_CR3_INTO_RDI
+	cmp $1,%dil
+	jnz 4f
+	sub $4097,%rdi
+	bts $63,%rdi
+	SET_RDI_INTO_CR3
+	jmp 3f
+111:
+
+	GET_CR3_INTO_RDI
+	mov %rdi,%rbx
+	add $__START_KERNEL_map,%rbx
+	sub phys_base(%rip),%rbx
+
+#ifdef CONFIG_PARAVIRT
+	cmpl $0, pv_info+PARAVIRT_enabled
+	jz 1f
+	pushq %rdi
+	i = 0
+	.rept USER_PGD_PTRS
+	mov i*8(%rbx),%rsi
+	mov $0,%sil
+	lea i*8(%rbx),%rdi
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched)
+	i = i + 1
+	.endr
+	popq %rdi
+	jmp 2f
+1:
+#endif
+
+	i = 0
+	.rept USER_PGD_PTRS
+	movb $0,i*8(%rbx)
+	i = i + 1
+	.endr
+
+2:	SET_RDI_INTO_CR3
+
+#ifdef CONFIG_PAX_KERNEXEC
+	GET_CR0_INTO_RDI
+	bts $16,%rdi
+	SET_RDI_INTO_CR0
+#endif
+
+3:
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI)
+#endif
+
+	popq %rbx
+	popq %rdi
+	pax_force_retaddr
+	retq
+4:	ud2
+ENDPROC(pax_enter_kernel_user)
+
+ENTRY(pax_exit_kernel_user)
+	pushq %rdi
+	pushq %rbx
+
+#ifdef CONFIG_PARAVIRT
+	PV_SAVE_REGS(CLBR_RDI)
+#endif
+
+	GET_CR3_INTO_RDI
+	661: jmp 1f
+	.pushsection .altinstr_replacement, "a"
+	662: ASM_NOP2
+	.popsection
+	.pushsection .altinstructions, "a"
+	altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
+	.popsection
+	cmp $0,%dil
+	jnz 3f
+	add $4097,%rdi
+	bts $63,%rdi
+	SET_RDI_INTO_CR3
+	jmp 2f
+1:
+
+	mov %rdi,%rbx
+
+#ifdef CONFIG_PAX_KERNEXEC
+	GET_CR0_INTO_RDI
+	btr $16,%rdi
+	jnc 3f
+	SET_RDI_INTO_CR0
+#endif
+
+	add $__START_KERNEL_map,%rbx
+	sub phys_base(%rip),%rbx
+
+#ifdef CONFIG_PARAVIRT
+	cmpl $0, pv_info+PARAVIRT_enabled
+	jz 1f
+	i = 0
+	.rept USER_PGD_PTRS
+	mov i*8(%rbx),%rsi
+	mov $0x67,%sil
+	lea i*8(%rbx),%rdi
+	call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched)
+	i = i + 1
+	.endr
+	jmp 2f
+1:
+#endif
+
+	i = 0
+	.rept USER_PGD_PTRS
+	movb $0x67,i*8(%rbx)
+	i = i + 1
+	.endr
+2:
+
+#ifdef CONFIG_PARAVIRT
+	PV_RESTORE_REGS(CLBR_RDI)
+#endif
+
+	popq %rbx
+	popq %rdi
+	pax_force_retaddr
+	retq
+3:	ud2
+ENDPROC(pax_exit_kernel_user)
+#endif
+
+	.macro pax_enter_kernel_nmi
+	pax_set_fptr_mask
+
+#ifdef CONFIG_PAX_KERNEXEC
+	GET_CR0_INTO_RDI
+	bts $16,%rdi
+	jc 110f
+	SET_RDI_INTO_CR0
+	or $2,%ebx
+110:
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	661: jmp 111f
+	.pushsection .altinstr_replacement, "a"
+	662: ASM_NOP2
+	.popsection
+	.pushsection .altinstructions, "a"
+	altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
+	.popsection
+	GET_CR3_INTO_RDI
+	cmp $0,%dil
+	jz 111f
+	sub $4097,%rdi
+	or $4,%ebx
+	bts $63,%rdi
+	SET_RDI_INTO_CR3
+	mov $__UDEREF_KERNEL_DS,%edi
+	mov %edi,%ss
+111:
+#endif
+	.endm
+
+	.macro pax_exit_kernel_nmi
+#ifdef CONFIG_PAX_KERNEXEC
+	btr $1,%ebx
+	jnc 110f
+	GET_CR0_INTO_RDI
+	btr $16,%rdi
+	SET_RDI_INTO_CR0
+110:
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	btr $2,%ebx
+	jnc 111f
+	GET_CR3_INTO_RDI
+	add $4097,%rdi
+	bts $63,%rdi
+	SET_RDI_INTO_CR3
+	mov $__KERNEL_DS,%edi
+	mov %edi,%ss
+111:
+#endif
+	.endm
+
+	.macro pax_erase_kstack
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+	call pax_erase_kstack
+#endif
+	.endm
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+ENTRY(pax_erase_kstack)
+	pushq %rdi
+	pushq %rcx
+	pushq %rax
+	pushq %r11
+
+	GET_THREAD_INFO(%r11)
+	mov TI_lowest_stack(%r11), %rdi
+	mov $-0xBEEF, %rax
+	std
+
+1:	mov %edi, %ecx
+	and $THREAD_SIZE_asm - 1, %ecx
+	shr $3, %ecx
+	repne scasq
+	jecxz 2f
+
+	cmp $2*8, %ecx
+	jc 2f
+
+	mov $2*8, %ecx
+	repe scasq
+	jecxz 2f
+	jne 1b
+
+2:	cld
+	mov %esp, %ecx
+	sub %edi, %ecx
+
+	cmp $THREAD_SIZE_asm, %rcx
+	jb 3f
+	ud2
+3:
+
+	shr $3, %ecx
+	rep stosq
+
+	mov TI_task_thread_sp0(%r11), %rdi
+	sub $256, %rdi
+	mov %rdi, TI_lowest_stack(%r11)
+
+	popq %r11
+	popq %rax
+	popq %rcx
+	popq %rdi
+	pax_force_retaddr
+	ret
+ENDPROC(pax_erase_kstack)
+#endif
 
 .macro TRACE_IRQS_IRETQ offset=ARGOFFSET
 #ifdef CONFIG_TRACE_IRQFLAGS
@@ -117,7 +543,7 @@ ENDPROC(native_usergs_sysret64)
 .endm
 
 .macro TRACE_IRQS_IRETQ_DEBUG offset=ARGOFFSET
-	bt   $9,EFLAGS-\offset(%rsp)	/* interrupts off? */
+	bt   $X86_EFLAGS_IF_BIT,EFLAGS-\offset(%rsp)	/* interrupts off? */
 	jnc  1f
 	TRACE_IRQS_ON_DEBUG
 1:
@@ -155,27 +581,6 @@ ENDPROC(native_usergs_sysret64)
 	movq \tmp,R11+\offset(%rsp)
 	.endm
 
-	.macro FAKE_STACK_FRAME child_rip
-	/* push in order ss, rsp, eflags, cs, rip */
-	xorl %eax, %eax
-	pushq_cfi $__KERNEL_DS /* ss */
-	/*CFI_REL_OFFSET	ss,0*/
-	pushq_cfi %rax /* rsp */
-	CFI_REL_OFFSET	rsp,0
-	pushq_cfi $(X86_EFLAGS_IF|X86_EFLAGS_FIXED) /* eflags - interrupts on */
-	/*CFI_REL_OFFSET	rflags,0*/
-	pushq_cfi $__KERNEL_CS /* cs */
-	/*CFI_REL_OFFSET	cs,0*/
-	pushq_cfi \child_rip /* rip */
-	CFI_REL_OFFSET	rip,0
-	pushq_cfi %rax /* orig rax */
-	.endm
-
-	.macro UNFAKE_STACK_FRAME
-	addq $8*6, %rsp
-	CFI_ADJUST_CFA_OFFSET	-(6*8)
-	.endm
-
 /*
  * initial frame state for interrupts (and exceptions without error code)
  */
@@ -242,25 +647,26 @@ ENDPROC(native_usergs_sysret64)
 /* save partial stack frame */
 	.macro SAVE_ARGS_IRQ
 	cld
-	/* start from rbp in pt_regs and jump over */
-	movq_cfi rdi, (RDI-RBP)
-	movq_cfi rsi, (RSI-RBP)
-	movq_cfi rdx, (RDX-RBP)
-	movq_cfi rcx, (RCX-RBP)
-	movq_cfi rax, (RAX-RBP)
-	movq_cfi  r8,  (R8-RBP)
-	movq_cfi  r9,  (R9-RBP)
-	movq_cfi r10, (R10-RBP)
-	movq_cfi r11, (R11-RBP)
+	/* start from r15 in pt_regs and jump over */
+	movq_cfi rdi, RDI
+	movq_cfi rsi, RSI
+	movq_cfi rdx, RDX
+	movq_cfi rcx, RCX
+	movq_cfi rax, RAX
+	movq_cfi  r8,  R8
+	movq_cfi  r9,  R9
+	movq_cfi r10, R10
+	movq_cfi r11, R11
+	movq_cfi r12, R12
 
 	/* Save rbp so that we can unwind from get_irq_regs() */
-	movq_cfi rbp, 0
+	movq_cfi rbp, RBP
 
 	/* Save previous stack value */
 	movq %rsp, %rsi
 
-	leaq -RBP(%rsp),%rdi	/* arg1 for handler */
-	testl $3, CS-RBP(%rsi)
+	movq %rsp,%rdi	/* arg1 for handler */
+	testb $3, CS(%rsi)
 	je 1f
 	SWAPGS
 	/*
@@ -280,6 +686,18 @@ ENDPROC(native_usergs_sysret64)
 			0x06 /* DW_OP_deref */, \
 			0x08 /* DW_OP_const1u */, SS+8-RBP, \
 			0x22 /* DW_OP_plus */
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS(%rdi)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
+
 	/* We entered an interrupt context - irqs are off: */
 	TRACE_IRQS_OFF
 	.endm
@@ -309,9 +727,52 @@ ENTRY(save_paranoid)
 	js 1f	/* negative -> in kernel */
 	SWAPGS
 	xorl %ebx,%ebx
-1:	ret
+1:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS+8(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
+	pax_force_retaddr
+	ret
 	CFI_ENDPROC
-END(save_paranoid)
+ENDPROC(save_paranoid)
+
+ENTRY(save_paranoid_nmi)
+	XCPT_FRAME 1 RDI+8
+	cld
+	movq_cfi rdi, RDI+8
+	movq_cfi rsi, RSI+8
+	movq_cfi rdx, RDX+8
+	movq_cfi rcx, RCX+8
+	movq_cfi rax, RAX+8
+	movq_cfi r8, R8+8
+	movq_cfi r9, R9+8
+	movq_cfi r10, R10+8
+	movq_cfi r11, R11+8
+	movq_cfi rbx, RBX+8
+	movq_cfi rbp, RBP+8
+	movq_cfi r12, R12+8
+	movq_cfi r13, R13+8
+	movq_cfi r14, R14+8
+	movq_cfi r15, R15+8
+	movl $1,%ebx
+	movl $MSR_GS_BASE,%ecx
+	rdmsr
+	testl %edx,%edx
+	js 1f	/* negative -> in kernel */
+	SWAPGS
+	xorl %ebx,%ebx
+1:	pax_enter_kernel_nmi
+	pax_force_retaddr
+	ret
+	CFI_ENDPROC
+ENDPROC(save_paranoid_nmi)
 
 /*
  * A newly forked process directly context switches into this address.
@@ -332,7 +793,7 @@ ENTRY(ret_from_fork)
 
 	RESTORE_REST
 
-	testl $3, CS-ARGOFFSET(%rsp)		# from kernel_thread?
+	testb $3, CS-ARGOFFSET(%rsp)		# from kernel_thread?
 	jz   1f
 
 	testl $_TIF_IA32, TI_flags(%rcx)	# 32-bit compat task needs IRET
@@ -342,15 +803,13 @@ ENTRY(ret_from_fork)
 	jmp ret_from_sys_call			# go to the SYSRET fastpath
 
 1:
-	subq $REST_SKIP, %rsp	# leave space for volatiles
-	CFI_ADJUST_CFA_OFFSET	REST_SKIP
 	movq %rbp, %rdi
 	call *%rbx
 	movl $0, RAX(%rsp)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(ret_from_fork)
+ENDPROC(ret_from_fork)
 
 /*
  * System call entry. Up to 6 arguments in registers are supported.
@@ -387,7 +846,7 @@ END(ret_from_fork)
 ENTRY(system_call)
 	CFI_STARTPROC	simple
 	CFI_SIGNAL_FRAME
-	CFI_DEF_CFA	rsp,KERNEL_STACK_OFFSET
+	CFI_DEF_CFA	rsp,0
 	CFI_REGISTER	rip,rcx
 	/*CFI_REGISTER	rflags,r11*/
 	SWAPGS_UNSAFE_STACK
@@ -400,16 +859,23 @@ GLOBAL(system_call_after_swapgs)
 
 	movq	%rsp,PER_CPU_VAR(old_rsp)
 	movq	PER_CPU_VAR(kernel_stack),%rsp
+	SAVE_ARGS 8*6,0
+	pax_enter_kernel_user
+
+#ifdef CONFIG_PAX_RANDKSTACK
+	pax_erase_kstack
+#endif
+
 	/*
 	 * No need to follow this irqs off/on section - it's straight
 	 * and short:
 	 */
 	ENABLE_INTERRUPTS(CLBR_NONE)
-	SAVE_ARGS 8,0
 	movq  %rax,ORIG_RAX-ARGOFFSET(%rsp)
 	movq  %rcx,RIP-ARGOFFSET(%rsp)
 	CFI_REL_OFFSET rip,RIP-ARGOFFSET
-	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	GET_THREAD_INFO(%rcx)
+	testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%rcx)
 	jnz tracesys
 system_call_fastpath:
 #if __SYSCALL_MASK == ~0
@@ -433,10 +899,13 @@ sysret_check:
 	LOCKDEP_SYS_EXIT
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
-	movl TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET),%edx
+	GET_THREAD_INFO(%rcx)
+	movl TI_flags(%rcx),%edx
 	andl %edi,%edx
 	jnz  sysret_careful
 	CFI_REMEMBER_STATE
+	pax_exit_kernel_user
+	pax_erase_kstack
 	/*
 	 * sysretq will re-enable interrupts:
 	 */
@@ -495,6 +964,9 @@ auditsys:
 	movq %rax,%rsi			/* 2nd arg: syscall number */
 	movl $AUDIT_ARCH_X86_64,%edi	/* 1st arg: audit arch */
 	call __audit_syscall_entry
+
+	pax_erase_kstack
+
 	LOAD_ARGS 0		/* reload call-clobbered registers */
 	jmp system_call_fastpath
 
@@ -516,7 +988,7 @@ sysret_audit:
 	/* Do syscall tracing */
 tracesys:
 #ifdef CONFIG_AUDITSYSCALL
-	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
+	testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%rcx)
 	jz auditsys
 #endif
 	SAVE_REST
@@ -524,12 +996,15 @@ tracesys:
 	FIXUP_TOP_OF_STACK %rdi
 	movq %rsp,%rdi
 	call syscall_trace_enter
+
+	pax_erase_kstack
+
 	/*
 	 * Reload arg registers from stack in case ptrace changed them.
 	 * We don't reload %rax because syscall_trace_enter() returned
 	 * the value it wants us to use in the table lookup.
 	 */
-	LOAD_ARGS ARGOFFSET, 1
+	LOAD_ARGS 1
 	RESTORE_REST
 #if __SYSCALL_MASK == ~0
 	cmpq $__NR_syscall_max,%rax
@@ -559,7 +1034,9 @@ GLOBAL(int_with_check)
 	andl %edi,%edx
 	jnz   int_careful
 	andl    $~TS_COMPAT,TI_status(%rcx)
-	jmp   retint_swapgs
+	pax_exit_kernel_user
+	pax_erase_kstack
+	jmp   retint_swapgs_pax
 
 	/* Either reschedule or signal or syscall exit tracking needed. */
 	/* First do a reschedule test. */
@@ -605,7 +1082,7 @@ int_restore_rest:
 	TRACE_IRQS_OFF
 	jmp int_with_check
 	CFI_ENDPROC
-END(system_call)
+ENDPROC(system_call)
 
 	.macro FORK_LIKE func
 ENTRY(stub_\func)
@@ -618,9 +1095,10 @@ ENTRY(stub_\func)
 	DEFAULT_FRAME 0 8		/* offset 8: return address */
 	call sys_\func
 	RESTORE_TOP_OF_STACK %r11, 8
-	ret $REST_SKIP		/* pop extended registers */
+	pax_force_retaddr
+	ret
 	CFI_ENDPROC
-END(stub_\func)
+ENDPROC(stub_\func)
 	.endm
 
 	.macro FIXED_FRAME label,func
@@ -630,9 +1108,10 @@ ENTRY(\label)
 	FIXUP_TOP_OF_STACK %r11, 8-ARGOFFSET
 	call \func
 	RESTORE_TOP_OF_STACK %r11, 8-ARGOFFSET
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(\label)
+ENDPROC(\label)
 	.endm
 
 	FORK_LIKE  clone
@@ -640,19 +1119,6 @@ END(\label)
 	FORK_LIKE  vfork
 	FIXED_FRAME stub_iopl, sys_iopl
 
-ENTRY(ptregscall_common)
-	DEFAULT_FRAME 1 8	/* offset 8: return address */
-	RESTORE_TOP_OF_STACK %r11, 8
-	movq_cfi_restore R15+8, r15
-	movq_cfi_restore R14+8, r14
-	movq_cfi_restore R13+8, r13
-	movq_cfi_restore R12+8, r12
-	movq_cfi_restore RBP+8, rbp
-	movq_cfi_restore RBX+8, rbx
-	ret $REST_SKIP		/* pop extended registers */
-	CFI_ENDPROC
-END(ptregscall_common)
-
 ENTRY(stub_execve)
 	CFI_STARTPROC
 	addq $8, %rsp
@@ -664,7 +1130,7 @@ ENTRY(stub_execve)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(stub_execve)
+ENDPROC(stub_execve)
 
 /*
  * sigreturn is special because it needs to restore all registers on return.
@@ -681,7 +1147,7 @@ ENTRY(stub_rt_sigreturn)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(stub_rt_sigreturn)
+ENDPROC(stub_rt_sigreturn)
 
 #ifdef CONFIG_X86_X32_ABI
 ENTRY(stub_x32_rt_sigreturn)
@@ -695,7 +1161,7 @@ ENTRY(stub_x32_rt_sigreturn)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(stub_x32_rt_sigreturn)
+ENDPROC(stub_x32_rt_sigreturn)
 
 ENTRY(stub_x32_execve)
 	CFI_STARTPROC
@@ -709,7 +1175,7 @@ ENTRY(stub_x32_execve)
 	RESTORE_REST
 	jmp int_ret_from_sys_call
 	CFI_ENDPROC
-END(stub_x32_execve)
+ENDPROC(stub_x32_execve)
 
 #endif
 
@@ -746,7 +1212,7 @@ vector=vector+1
 2:	jmp common_interrupt
 .endr
 	CFI_ENDPROC
-END(irq_entries_start)
+ENDPROC(irq_entries_start)
 
 .previous
 END(interrupt)
@@ -763,8 +1229,8 @@ END(interrupt)
 /* 0(%rsp): ~(interrupt number) */
 	.macro interrupt func
 	/* reserve pt_regs for scratch regs and rbp */
-	subq $ORIG_RAX-RBP, %rsp
-	CFI_ADJUST_CFA_OFFSET ORIG_RAX-RBP
+	subq $ORIG_RAX, %rsp
+	CFI_ADJUST_CFA_OFFSET ORIG_RAX
 	SAVE_ARGS_IRQ
 	call \func
 	.endm
@@ -787,14 +1253,14 @@ ret_from_intr:
 
 	/* Restore saved previous stack */
 	popq %rsi
-	CFI_DEF_CFA rsi,SS+8-RBP	/* reg/off reset after def_cfa_expr */
-	leaq ARGOFFSET-RBP(%rsi), %rsp
+	CFI_DEF_CFA rsi,SS+8	/* reg/off reset after def_cfa_expr */
+	movq %rsi, %rsp
 	CFI_DEF_CFA_REGISTER	rsp
-	CFI_ADJUST_CFA_OFFSET	RBP-ARGOFFSET
+	CFI_ADJUST_CFA_OFFSET	-ARGOFFSET
 
 exit_intr:
 	GET_THREAD_INFO(%rcx)
-	testl $3,CS-ARGOFFSET(%rsp)
+	testb $3,CS-ARGOFFSET(%rsp)
 	je retint_kernel
 
 	/* Interrupt came from user space */
@@ -816,12 +1282,35 @@ retint_swapgs:		/* return to user-space */
 	 * The iretq could re-enable interrupts:
 	 */
 	DISABLE_INTERRUPTS(CLBR_ANY)
+	pax_exit_kernel_user
+retint_swapgs_pax:
 	TRACE_IRQS_IRETQ
 	SWAPGS
 	jmp restore_args
 
 retint_restore_args:	/* return to kernel space */
 	DISABLE_INTERRUPTS(CLBR_ANY)
+	pax_exit_kernel
+
+#if defined(CONFIG_EFI) && defined(CONFIG_PAX_KERNEXEC)
+	/* This is a quirk to allow IRQs/NMIs/MCEs during early EFI setup,
+	 * namely calling EFI runtime services with a phys mapping. We're
+	 * starting off with NOPs and patch in the real instrumentation
+	 * (BTS/OR) before starting any userland process; even before starting
+	 * up the APs.
+	 */
+	.pushsection .altinstr_replacement, "a"
+	601: pax_force_retaddr (RIP-ARGOFFSET)
+	602:
+	.popsection
+	603: .fill 602b-601b, 1, 0x90
+	.pushsection .altinstructions, "a"
+	altinstruction_entry 603b, 601b, X86_FEATURE_ALWAYS, 602b-601b, 602b-601b
+	.popsection
+#else
+	pax_force_retaddr (RIP-ARGOFFSET)
+#endif
+
 	/*
 	 * The iretq could re-enable interrupts:
 	 */
@@ -934,7 +1423,7 @@ ENTRY(retint_kernel)
 	jmp exit_intr
 #endif
 	CFI_ENDPROC
-END(common_interrupt)
+ENDPROC(common_interrupt)
 
 	/*
 	 * If IRET takes a fault on the espfix stack, then we
@@ -956,13 +1445,13 @@ __do_double_fault:
 	cmpq $native_irq_return_iret,%rax
 	jne do_double_fault		/* This shouldn't happen... */
 	movq PER_CPU_VAR(kernel_stack),%rax
-	subq $(6*8-KERNEL_STACK_OFFSET),%rax	/* Reset to original stack */
+	subq $(6*8),%rax		/* Reset to original stack */
 	movq %rax,RSP(%rdi)
 	movq $0,(%rax)			/* Missing (lost) #GP error code */
 	movq $general_protection,RIP(%rdi)
 	retq
 	CFI_ENDPROC
-END(__do_double_fault)
+ENDPROC(__do_double_fault)
 #else
 # define __do_double_fault do_double_fault
 #endif
@@ -979,7 +1468,7 @@ ENTRY(\sym)
 	interrupt \do_sym
 	jmp ret_from_intr
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 #ifdef CONFIG_TRACING
@@ -1052,7 +1541,7 @@ apicinterrupt IRQ_WORK_VECTOR \
 /*
  * Exception entry points.
  */
-#define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8)
+#define INIT_TSS_IST(x) (TSS_ist + ((x) - 1) * 8)(%r13)
 
 .macro idtentry sym do_sym has_error_code:req paranoid=0 shift_ist=-1
 ENTRY(\sym)
@@ -1103,6 +1592,12 @@ ENTRY(\sym)
 	.endif
 
 	.if \shift_ist != -1
+#ifdef CONFIG_SMP
+	imul $TSS_size, PER_CPU_VAR(cpu_number), %r13d
+	lea init_tss(%r13), %r13
+#else
+	lea init_tss(%rip), %r13
+#endif
 	subq $EXCEPTION_STKSZ, INIT_TSS_IST(\shift_ist)
 	.endif
 
@@ -1119,7 +1614,7 @@ ENTRY(\sym)
 	.endif
 
 	CFI_ENDPROC
-END(\sym)
+ENDPROC(\sym)
 .endm
 
 #ifdef CONFIG_TRACING
@@ -1160,9 +1655,10 @@ gs_change:
 2:	mfence		/* workaround */
 	SWAPGS
 	popfq_cfi
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(native_load_gs_index)
+ENDPROC(native_load_gs_index)
 
 	_ASM_EXTABLE(gs_change,bad_gs)
 	.section .fixup,"ax"
@@ -1190,9 +1686,10 @@ ENTRY(do_softirq_own_stack)
 	CFI_DEF_CFA_REGISTER	rsp
 	CFI_ADJUST_CFA_OFFSET   -8
 	decl PER_CPU_VAR(irq_count)
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-END(do_softirq_own_stack)
+ENDPROC(do_softirq_own_stack)
 
 #ifdef CONFIG_XEN
 idtentry xen_hypervisor_callback xen_do_hypervisor_callback has_error_code=0
@@ -1230,7 +1727,7 @@ ENTRY(xen_do_hypervisor_callback)   # do_hypervisor_callback(struct *pt_regs)
 	decl PER_CPU_VAR(irq_count)
 	jmp  error_exit
 	CFI_ENDPROC
-END(xen_do_hypervisor_callback)
+ENDPROC(xen_do_hypervisor_callback)
 
 /*
  * Hypervisor uses this for application faults while it executes.
@@ -1289,7 +1786,7 @@ ENTRY(xen_failsafe_callback)
 	SAVE_ALL
 	jmp error_exit
 	CFI_ENDPROC
-END(xen_failsafe_callback)
+ENDPROC(xen_failsafe_callback)
 
 apicinterrupt3 HYPERVISOR_CALLBACK_VECTOR \
 	xen_hvm_callback_vector xen_evtchn_do_upcall
@@ -1336,18 +1833,33 @@ ENTRY(paranoid_exit)
 	DEFAULT_FRAME
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF_DEBUG
-	testl %ebx,%ebx				/* swapgs needed? */
+	testl $1,%ebx				/* swapgs needed? */
 	jnz paranoid_restore
-	testl $3,CS(%rsp)
+	testb $3,CS(%rsp)
 	jnz   paranoid_userspace
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_exit_kernel
+	TRACE_IRQS_IRETQ 0
+	SWAPGS_UNSAFE_STACK
+	RESTORE_ALL 8
+	pax_force_retaddr_bts
+	jmp irq_return
+#endif
 paranoid_swapgs:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pax_exit_kernel_user
+#else
+	pax_exit_kernel
+#endif
 	TRACE_IRQS_IRETQ 0
 	SWAPGS_UNSAFE_STACK
 	RESTORE_ALL 8
 	jmp irq_return
 paranoid_restore:
+	pax_exit_kernel
 	TRACE_IRQS_IRETQ_DEBUG 0
 	RESTORE_ALL 8
+	pax_force_retaddr_bts
 	jmp irq_return
 paranoid_userspace:
 	GET_THREAD_INFO(%rcx)
@@ -1376,7 +1888,7 @@ paranoid_schedule:
 	TRACE_IRQS_OFF
 	jmp paranoid_userspace
 	CFI_ENDPROC
-END(paranoid_exit)
+ENDPROC(paranoid_exit)
 
 /*
  * Exception entry point. This expects an error code/orig_rax on the stack.
@@ -1403,12 +1915,23 @@ ENTRY(error_entry)
 	movq_cfi r14, R14+8
 	movq_cfi r15, R15+8
 	xorl %ebx,%ebx
-	testl $3,CS+8(%rsp)
+	testb $3,CS+8(%rsp)
 	je error_kernelspace
 error_swapgs:
 	SWAPGS
 error_sti:
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	testb $3, CS+8(%rsp)
+	jnz 1f
+	pax_enter_kernel
+	jmp 2f
+1:	pax_enter_kernel_user
+2:
+#else
+	pax_enter_kernel
+#endif
 	TRACE_IRQS_OFF
+	pax_force_retaddr
 	ret
 
 /*
@@ -1435,7 +1958,7 @@ bstep_iret:
 	movq %rcx,RIP+8(%rsp)
 	jmp error_swapgs
 	CFI_ENDPROC
-END(error_entry)
+ENDPROC(error_entry)
 
 
 /* ebx:	no swapgs flag (1: don't need swapgs, 0: need it) */
@@ -1446,7 +1969,7 @@ ENTRY(error_exit)
 	DISABLE_INTERRUPTS(CLBR_NONE)
 	TRACE_IRQS_OFF
 	GET_THREAD_INFO(%rcx)
-	testl %eax,%eax
+	testl $1,%eax
 	jne retint_kernel
 	LOCKDEP_SYS_EXIT_IRQ
 	movl TI_flags(%rcx),%edx
@@ -1455,7 +1978,7 @@ ENTRY(error_exit)
 	jnz retint_careful
 	jmp retint_swapgs
 	CFI_ENDPROC
-END(error_exit)
+ENDPROC(error_exit)
 
 /*
  * Test if a given stack is an NMI stack or not.
@@ -1513,9 +2036,11 @@ ENTRY(nmi)
 	 * If %cs was not the kernel segment, then the NMI triggered in user
 	 * space, which means it is definitely not nested.
 	 */
+	cmpl $__KERNEXEC_KERNEL_CS, 16(%rsp)
+	je 1f
 	cmpl $__KERNEL_CS, 16(%rsp)
 	jne first_nmi
-
+1:
 	/*
 	 * Check the special variable on the stack to see if NMIs are
 	 * executing.
@@ -1549,8 +2074,7 @@ nested_nmi:
 
 1:
 	/* Set up the interrupted NMIs stack to jump to repeat_nmi */
-	leaq -1*8(%rsp), %rdx
-	movq %rdx, %rsp
+	subq $8, %rsp
 	CFI_ADJUST_CFA_OFFSET 1*8
 	leaq -10*8(%rsp), %rdx
 	pushq_cfi $__KERNEL_DS
@@ -1568,6 +2092,7 @@ nested_nmi_out:
 	CFI_RESTORE rdx
 
 	/* No need to check faults here */
+#	pax_force_retaddr_bts
 	INTERRUPT_RETURN
 
 	CFI_RESTORE_STATE
@@ -1664,13 +2189,13 @@ end_repeat_nmi:
 	subq $ORIG_RAX-R15, %rsp
 	CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
 	/*
-	 * Use save_paranoid to handle SWAPGS, but no need to use paranoid_exit
+	 * Use save_paranoid_nmi to handle SWAPGS, but no need to use paranoid_exit
 	 * as we should not be calling schedule in NMI context.
 	 * Even with normal interrupts enabled. An NMI should not be
 	 * setting NEED_RESCHED or anything that normal interrupts and
 	 * exceptions might do.
 	 */
-	call save_paranoid
+	call save_paranoid_nmi
 	DEFAULT_FRAME 0
 
 	/*
@@ -1680,9 +2205,9 @@ end_repeat_nmi:
 	 * NMI itself takes a page fault, the page fault that was preempted
 	 * will read the information from the NMI page fault and not the
 	 * origin fault. Save it off and restore it if it changes.
-	 * Use the r12 callee-saved register.
+	 * Use the r13 callee-saved register.
 	 */
-	movq %cr2, %r12
+	movq %cr2, %r13
 
 	/* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */
 	movq %rsp,%rdi
@@ -1691,29 +2216,34 @@ end_repeat_nmi:
 
 	/* Did the NMI take a page fault? Restore cr2 if it did */
 	movq %cr2, %rcx
-	cmpq %rcx, %r12
+	cmpq %rcx, %r13
 	je 1f
-	movq %r12, %cr2
+	movq %r13, %cr2
 1:
 	
-	testl %ebx,%ebx				/* swapgs needed? */
+	testl $1,%ebx				/* swapgs needed? */
 	jnz nmi_restore
 nmi_swapgs:
 	SWAPGS_UNSAFE_STACK
 nmi_restore:
+	pax_exit_kernel_nmi
 	/* Pop the extra iret frame at once */
 	RESTORE_ALL 6*8
+	testb $3, 8(%rsp)
+	jnz 1f
+	pax_force_retaddr_bts
+1:
 
 	/* Clear the NMI executing stack variable */
 	movq $0, 5*8(%rsp)
 	jmp irq_return
 	CFI_ENDPROC
-END(nmi)
+ENDPROC(nmi)
 
 ENTRY(ignore_sysret)
 	CFI_STARTPROC
 	mov $-ENOSYS,%eax
 	sysret
 	CFI_ENDPROC
-END(ignore_sysret)
+ENDPROC(ignore_sysret)
 
diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c
index 94d857f..bf1f0bf 100644
--- a/arch/x86/kernel/espfix_64.c
+++ b/arch/x86/kernel/espfix_64.c
@@ -197,7 +197,7 @@ void init_espfix_ap(void)
 		set_pte(&pte_p[n*PTE_STRIDE], pte);
 
 	/* Job is done for this CPU and any CPU which shares this page */
-	ACCESS_ONCE(espfix_pages[page]) = stack_page;
+	ACCESS_ONCE_RW(espfix_pages[page]) = stack_page;
 
 unlock_done:
 	mutex_unlock(&espfix_init_mutex);
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index cbc4a91..b38ee45 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -88,7 +88,7 @@ static unsigned long text_ip_addr(unsigned long ip)
 	 * kernel identity mapping to modify code.
 	 */
 	if (within(ip, (unsigned long)_text, (unsigned long)_etext))
-		ip = (unsigned long)__va(__pa_symbol(ip));
+		ip = (unsigned long)__va(__pa_symbol(ktla_ktva(ip)));
 
 	return ip;
 }
@@ -104,6 +104,8 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code,
 {
 	unsigned char replaced[MCOUNT_INSN_SIZE];
 
+	ip = ktla_ktva(ip);
+
 	/*
 	 * Note: Due to modules and __init, code can
 	 *  disappear and change, we need to protect against faulting
@@ -229,7 +231,7 @@ static int update_ftrace_func(unsigned long ip, void *new)
 	unsigned char old[MCOUNT_INSN_SIZE];
 	int ret;
 
-	memcpy(old, (void *)ip, MCOUNT_INSN_SIZE);
+	memcpy(old, (void *)ktla_ktva(ip), MCOUNT_INSN_SIZE);
 
 	ftrace_update_func = ip;
 	/* Make sure the breakpoints see the ftrace_update_func update */
@@ -310,7 +312,7 @@ static int add_break(unsigned long ip, const char *old)
 	unsigned char replaced[MCOUNT_INSN_SIZE];
 	unsigned char brk = BREAKPOINT_INSTRUCTION;
 
-	if (probe_kernel_read(replaced, (void *)ip, MCOUNT_INSN_SIZE))
+	if (probe_kernel_read(replaced, (void *)ktla_ktva(ip), MCOUNT_INSN_SIZE))
 		return -EFAULT;
 
 	/* Make sure it is what we expect it to be */
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index eda1a86..8f6df48 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -67,12 +67,12 @@ again:
 	pgd = *pgd_p;
 
 	/*
-	 * The use of __START_KERNEL_map rather than __PAGE_OFFSET here is
-	 * critical -- __PAGE_OFFSET would point us back into the dynamic
+	 * The use of __early_va rather than __va here is critical:
+	 * __va would point us back into the dynamic
 	 * range and we might end up looping forever...
 	 */
 	if (pgd)
-		pud_p = (pudval_t *)((pgd & PTE_PFN_MASK) + __START_KERNEL_map - phys_base);
+		pud_p = (pudval_t *)(__early_va(pgd & PTE_PFN_MASK));
 	else {
 		if (next_early_pgt >= EARLY_DYNAMIC_PAGE_TABLES) {
 			reset_early_page_tables();
@@ -82,13 +82,13 @@ again:
 		pud_p = (pudval_t *)early_dynamic_pgts[next_early_pgt++];
 		for (i = 0; i < PTRS_PER_PUD; i++)
 			pud_p[i] = 0;
-		*pgd_p = (pgdval_t)pud_p - __START_KERNEL_map + phys_base + _KERNPG_TABLE;
+		*pgd_p = (pgdval_t)__pa(pud_p) + _KERNPG_TABLE;
 	}
 	pud_p += pud_index(address);
 	pud = *pud_p;
 
 	if (pud)
-		pmd_p = (pmdval_t *)((pud & PTE_PFN_MASK) + __START_KERNEL_map - phys_base);
+		pmd_p = (pmdval_t *)(__early_va(pud & PTE_PFN_MASK));
 	else {
 		if (next_early_pgt >= EARLY_DYNAMIC_PAGE_TABLES) {
 			reset_early_page_tables();
@@ -98,7 +98,7 @@ again:
 		pmd_p = (pmdval_t *)early_dynamic_pgts[next_early_pgt++];
 		for (i = 0; i < PTRS_PER_PMD; i++)
 			pmd_p[i] = 0;
-		*pud_p = (pudval_t)pmd_p - __START_KERNEL_map + phys_base + _KERNPG_TABLE;
+		*pud_p = (pudval_t)__pa(pmd_p) + _KERNPG_TABLE;
 	}
 	pmd = (physaddr & PMD_MASK) + early_pmd_flags;
 	pmd_p[pmd_index(address)] = pmd;
@@ -175,7 +175,6 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data)
 	if (console_loglevel >= CONSOLE_LOGLEVEL_DEBUG)
 		early_printk("Kernel alive\n");
 
-	clear_page(init_level4_pgt);
 	/* set init_level4_pgt kernel high mapping*/
 	init_level4_pgt[511] = early_level4_pgt[511];
 
diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
index f36bd42..0ab4474 100644
--- a/arch/x86/kernel/head_32.S
+++ b/arch/x86/kernel/head_32.S
@@ -26,6 +26,12 @@
 /* Physical address */
 #define pa(X) ((X) - __PAGE_OFFSET)
 
+#ifdef CONFIG_PAX_KERNEXEC
+#define ta(X) (X)
+#else
+#define ta(X) ((X) - __PAGE_OFFSET)
+#endif
+
 /*
  * References to members of the new_cpu_data structure.
  */
@@ -55,11 +61,7 @@
  * and small than max_low_pfn, otherwise will waste some page table entries
  */
 
-#if PTRS_PER_PMD > 1
-#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD)
-#else
-#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
-#endif
+#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE)
 
 /* Number of possible pages in the lowmem region */
 LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
@@ -78,6 +80,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_PAGES) * PAGE_SIZE
 RESERVE_BRK(pagetables, INIT_MAP_SIZE)
 
 /*
+ * Real beginning of normal "text" segment
+ */
+ENTRY(stext)
+ENTRY(_stext)
+
+/*
  * 32-bit kernel entrypoint; only used by the boot CPU.  On entry,
  * %esi points to the real-mode code as a 32-bit pointer.
  * CS and DS must be 4 GB flat segments, but we don't depend on
@@ -85,6 +93,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE)
  * can.
  */
 __HEAD
+
+#ifdef CONFIG_PAX_KERNEXEC
+	jmp startup_32
+/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */
+.fill PAGE_SIZE-5,1,0xcc
+#endif
+
 ENTRY(startup_32)
 	movl pa(stack_start),%ecx
 	
@@ -106,6 +121,59 @@ ENTRY(startup_32)
 2:
 	leal -__PAGE_OFFSET(%ecx),%esp
 
+#ifdef CONFIG_SMP
+	movl $pa(cpu_gdt_table),%edi
+	movl $__per_cpu_load,%eax
+	movw %ax,GDT_ENTRY_PERCPU * 8 + 2(%edi)
+	rorl $16,%eax
+	movb %al,GDT_ENTRY_PERCPU * 8 + 4(%edi)
+	movb %ah,GDT_ENTRY_PERCPU * 8 + 7(%edi)
+	movl $__per_cpu_end - 1,%eax
+	subl $__per_cpu_start,%eax
+	movw %ax,GDT_ENTRY_PERCPU * 8 + 0(%edi)
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	movl $NR_CPUS,%ecx
+	movl $pa(cpu_gdt_table),%edi
+1:
+	movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi)
+	movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi)
+	movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi)
+	addl $PAGE_SIZE_asm,%edi
+	loop 1b
+#endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+	movl $pa(boot_gdt),%edi
+	movl $__LOAD_PHYSICAL_ADDR,%eax
+	movw %ax,GDT_ENTRY_BOOT_CS * 8 + 2(%edi)
+	rorl $16,%eax
+	movb %al,GDT_ENTRY_BOOT_CS * 8 + 4(%edi)
+	movb %ah,GDT_ENTRY_BOOT_CS * 8 + 7(%edi)
+	rorl $16,%eax
+
+	ljmp $(__BOOT_CS),$1f
+1:
+
+	movl $NR_CPUS,%ecx
+	movl $pa(cpu_gdt_table),%edi
+	addl $__PAGE_OFFSET,%eax
+1:
+	movb $0xc0,GDT_ENTRY_KERNEL_CS * 8 + 6(%edi)
+	movb $0xc0,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 6(%edi)
+	movw %ax,GDT_ENTRY_KERNEL_CS * 8 + 2(%edi)
+	movw %ax,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 2(%edi)
+	rorl $16,%eax
+	movb %al,GDT_ENTRY_KERNEL_CS * 8 + 4(%edi)
+	movb %al,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 4(%edi)
+	movb %ah,GDT_ENTRY_KERNEL_CS * 8 + 7(%edi)
+	movb %ah,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 7(%edi)
+	rorl $16,%eax
+	addl $PAGE_SIZE_asm,%edi
+	loop 1b
+#endif
+
 /*
  * Clear BSS first so that there are no surprises...
  */
@@ -201,8 +269,11 @@ ENTRY(startup_32)
 	movl %eax, pa(max_pfn_mapped)
 
 	/* Do early initialization of the fixmap area */
-	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
-	movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#ifdef CONFIG_COMPAT_VDSO
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#else
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_pg_pmd+0x1000*KPMDS-8)
+#endif
 #else	/* Not PAE */
 
 page_pde_offset = (__PAGE_OFFSET >> 20);
@@ -232,8 +303,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20);
 	movl %eax, pa(max_pfn_mapped)
 
 	/* Do early initialization of the fixmap area */
-	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
-	movl %eax,pa(initial_page_table+0xffc)
+#ifdef CONFIG_COMPAT_VDSO
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_page_table+0xffc)
+#else
+	movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_page_table+0xffc)
+#endif
 #endif
 
 #ifdef CONFIG_PARAVIRT
@@ -247,9 +321,7 @@ page_pde_offset = (__PAGE_OFFSET >> 20);
 	cmpl $num_subarch_entries, %eax
 	jae bad_subarch
 
-	movl pa(subarch_entries)(,%eax,4), %eax
-	subl $__PAGE_OFFSET, %eax
-	jmp *%eax
+	jmp *pa(subarch_entries)(,%eax,4)
 
 bad_subarch:
 WEAK(lguest_entry)
@@ -261,10 +333,10 @@ WEAK(xen_entry)
 	__INITDATA
 
 subarch_entries:
-	.long default_entry		/* normal x86/PC */
-	.long lguest_entry		/* lguest hypervisor */
-	.long xen_entry			/* Xen hypervisor */
-	.long default_entry		/* Moorestown MID */
+	.long ta(default_entry)		/* normal x86/PC */
+	.long ta(lguest_entry)		/* lguest hypervisor */
+	.long ta(xen_entry)		/* Xen hypervisor */
+	.long ta(default_entry)		/* Moorestown MID */
 num_subarch_entries = (. - subarch_entries) / 4
 .previous
 #else
@@ -354,6 +426,7 @@ default_entry:
 	movl pa(mmu_cr4_features),%eax
 	movl %eax,%cr4
 
+#ifdef CONFIG_X86_PAE
 	testb $X86_CR4_PAE, %al		# check if PAE is enabled
 	jz enable_paging
 
@@ -382,6 +455,9 @@ default_entry:
 	/* Make changes effective */
 	wrmsr
 
+	btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4)
+#endif
+
 enable_paging:
 
 /*
@@ -449,14 +525,20 @@ is486:
 1:	movl $(__KERNEL_DS),%eax	# reload all the segment registers
 	movl %eax,%ss			# after changing gdt.
 
-	movl $(__USER_DS),%eax		# DS/ES contains default USER segment
+#	movl $(__KERNEL_DS),%eax	# DS/ES contains default KERNEL segment
 	movl %eax,%ds
 	movl %eax,%es
 
 	movl $(__KERNEL_PERCPU), %eax
 	movl %eax,%fs			# set this cpu's percpu
 
+#ifdef CONFIG_CC_STACKPROTECTOR
 	movl $(__KERNEL_STACK_CANARY),%eax
+#elif defined(CONFIG_PAX_MEMORY_UDEREF)
+	movl $(__USER_DS),%eax
+#else
+	xorl %eax,%eax
+#endif
 	movl %eax,%gs
 
 	xorl %eax,%eax			# Clear LDT
@@ -512,8 +594,11 @@ setup_once:
 	 * relocation.  Manually set base address in stack canary
 	 * segment descriptor.
 	 */
-	movl $gdt_page,%eax
+	movl $cpu_gdt_table,%eax
 	movl $stack_canary,%ecx
+#ifdef CONFIG_SMP
+	addl $__per_cpu_load,%ecx
+#endif
 	movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax)
 	shrl $16, %ecx
 	movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax)
@@ -548,7 +633,7 @@ ENTRY(early_idt_handler)
 	cmpl $2,(%esp)		# X86_TRAP_NMI
 	je is_nmi		# Ignore NMI
 
-	cmpl $2,%ss:early_recursion_flag
+	cmpl $1,%ss:early_recursion_flag
 	je hlt_loop
 	incl %ss:early_recursion_flag
 
@@ -586,8 +671,8 @@ ENTRY(early_idt_handler)
 	pushl (20+6*4)(%esp)	/* trapno */
 	pushl $fault_msg
 	call printk
-#endif
 	call dump_stack
+#endif
 hlt_loop:
 	hlt
 	jmp hlt_loop
@@ -607,8 +692,11 @@ ENDPROC(early_idt_handler)
 /* This is the default interrupt "handler" :-) */
 	ALIGN
 ignore_int:
-	cld
 #ifdef CONFIG_PRINTK
+	cmpl $2,%ss:early_recursion_flag
+	je hlt_loop
+	incl %ss:early_recursion_flag
+	cld
 	pushl %eax
 	pushl %ecx
 	pushl %edx
@@ -617,9 +705,6 @@ ignore_int:
 	movl $(__KERNEL_DS),%eax
 	movl %eax,%ds
 	movl %eax,%es
-	cmpl $2,early_recursion_flag
-	je hlt_loop
-	incl early_recursion_flag
 	pushl 16(%esp)
 	pushl 24(%esp)
 	pushl 32(%esp)
@@ -653,29 +738,34 @@ ENTRY(setup_once_ref)
 /*
  * BSS section
  */
-__PAGE_ALIGNED_BSS
-	.align PAGE_SIZE
 #ifdef CONFIG_X86_PAE
+.section .initial_pg_pmd,"a",@progbits
 initial_pg_pmd:
 	.fill 1024*KPMDS,4,0
 #else
+.section .initial_page_table,"a",@progbits
 ENTRY(initial_page_table)
 	.fill 1024,4,0
 #endif
+.section .initial_pg_fixmap,"a",@progbits
 initial_pg_fixmap:
 	.fill 1024,4,0
+.section .empty_zero_page,"a",@progbits
 ENTRY(empty_zero_page)
 	.fill 4096,1,0
+.section .swapper_pg_dir,"a",@progbits
 ENTRY(swapper_pg_dir)
+#ifdef CONFIG_X86_PAE
+	.fill 4,8,0
+#else
 	.fill 1024,4,0
+#endif
 
 /*
  * This starts the data section.
  */
 #ifdef CONFIG_X86_PAE
-__PAGE_ALIGNED_DATA
-	/* Page-aligned for the benefit of paravirt? */
-	.align PAGE_SIZE
+.section .initial_page_table,"a",@progbits
 ENTRY(initial_page_table)
 	.long	pa(initial_pg_pmd+PGD_IDENT_ATTR),0	/* low identity map */
 # if KPMDS == 3
@@ -694,12 +784,20 @@ ENTRY(initial_page_table)
 #  error "Kernel PMDs should be 1, 2 or 3"
 # endif
 	.align PAGE_SIZE		/* needs to be page-sized too */
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+ENTRY(cpu_pgd)
+	.rept 2*NR_CPUS
+	.fill	4,8,0
+	.endr
+#endif
+
 #endif
 
 .data
 .balign 4
 ENTRY(stack_start)
-	.long init_thread_union+THREAD_SIZE
+	.long init_thread_union+THREAD_SIZE-8
 
 __INITRODATA
 int_msg:
@@ -727,7 +825,7 @@ fault_msg:
  * segment size, and 32-bit linear address value:
  */
 
-	.data
+.section .rodata,"a",@progbits
 .globl boot_gdt_descr
 .globl idt_descr
 
@@ -736,7 +834,7 @@ fault_msg:
 	.word 0				# 32 bit align gdt_desc.address
 boot_gdt_descr:
 	.word __BOOT_DS+7
-	.long boot_gdt - __PAGE_OFFSET
+	.long pa(boot_gdt)
 
 	.word 0				# 32-bit align idt_desc.address
 idt_descr:
@@ -747,7 +845,7 @@ idt_descr:
 	.word 0				# 32 bit align gdt_desc.address
 ENTRY(early_gdt_descr)
 	.word GDT_ENTRIES*8-1
-	.long gdt_page			/* Overwritten for secondary CPUs */
+	.long cpu_gdt_table		/* Overwritten for secondary CPUs */
 
 /*
  * The boot_gdt must mirror the equivalent in setup.S and is
@@ -756,5 +854,65 @@ ENTRY(early_gdt_descr)
 	.align L1_CACHE_BYTES
 ENTRY(boot_gdt)
 	.fill GDT_ENTRY_BOOT_CS,8,0
-	.quad 0x00cf9a000000ffff	/* kernel 4GB code at 0x00000000 */
-	.quad 0x00cf92000000ffff	/* kernel 4GB data at 0x00000000 */
+	.quad 0x00cf9b000000ffff	/* kernel 4GB code at 0x00000000 */
+	.quad 0x00cf93000000ffff	/* kernel 4GB data at 0x00000000 */
+
+	.align PAGE_SIZE_asm
+ENTRY(cpu_gdt_table)
+	.rept NR_CPUS
+	.quad 0x0000000000000000	/* NULL descriptor */
+	.quad 0x0000000000000000	/* 0x0b reserved */
+	.quad 0x0000000000000000	/* 0x13 reserved */
+	.quad 0x0000000000000000	/* 0x1b reserved */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	.quad 0x00cf9b000000ffff	/* 0x20 alternate kernel 4GB code at 0x00000000 */
+#else
+	.quad 0x0000000000000000	/* 0x20 unused */
+#endif
+
+	.quad 0x0000000000000000	/* 0x28 unused */
+	.quad 0x0000000000000000	/* 0x33 TLS entry 1 */
+	.quad 0x0000000000000000	/* 0x3b TLS entry 2 */
+	.quad 0x0000000000000000	/* 0x43 TLS entry 3 */
+	.quad 0x0000000000000000	/* 0x4b reserved */
+	.quad 0x0000000000000000	/* 0x53 reserved */
+	.quad 0x0000000000000000	/* 0x5b reserved */
+
+	.quad 0x00cf9b000000ffff	/* 0x60 kernel 4GB code at 0x00000000 */
+	.quad 0x00cf93000000ffff	/* 0x68 kernel 4GB data at 0x00000000 */
+	.quad 0x00cffb000000ffff	/* 0x73 user 4GB code at 0x00000000 */
+	.quad 0x00cff3000000ffff	/* 0x7b user 4GB data at 0x00000000 */
+
+	.quad 0x0000000000000000	/* 0x80 TSS descriptor */
+	.quad 0x0000000000000000	/* 0x88 LDT descriptor */
+
+	/*
+	 * Segments used for calling PnP BIOS have byte granularity.
+	 * The code segments and data segments have fixed 64k limits,
+	 * the transfer segment sizes are set at run time.
+	 */
+	.quad 0x00409b000000ffff	/* 0x90 32-bit code */
+	.quad 0x00009b000000ffff	/* 0x98 16-bit code */
+	.quad 0x000093000000ffff	/* 0xa0 16-bit data */
+	.quad 0x0000930000000000	/* 0xa8 16-bit data */
+	.quad 0x0000930000000000	/* 0xb0 16-bit data */
+
+	/*
+	 * The APM segments have byte granularity and their bases
+	 * are set at run time.  All have 64k limits.
+	 */
+	.quad 0x00409b000000ffff	/* 0xb8 APM CS    code */
+	.quad 0x00009b000000ffff	/* 0xc0 APM CS 16 code (16 bit) */
+	.quad 0x004093000000ffff	/* 0xc8 APM DS    data */
+
+	.quad 0x00c093000000ffff	/* 0xd0 - ESPFIX SS */
+	.quad 0x0040930000000000	/* 0xd8 - PERCPU */
+	.quad 0x0040910000000017	/* 0xe0 - STACK_CANARY */
+	.quad 0x0000000000000000	/* 0xe8 - PCIBIOS_CS */
+	.quad 0x0000000000000000	/* 0xf0 - PCIBIOS_DS */
+	.quad 0x0000000000000000	/* 0xf8 - GDT entry 31: double-fault TSS */
+
+	/* Be sure this is zeroed to avoid false validations in Xen */
+	.fill PAGE_SIZE_asm - GDT_SIZE,1,0
+	.endr
diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
index a468c0a..8b5a879 100644
--- a/arch/x86/kernel/head_64.S
+++ b/arch/x86/kernel/head_64.S
@@ -20,6 +20,8 @@
 #include <asm/processor-flags.h>
 #include <asm/percpu.h>
 #include <asm/nops.h>
+#include <asm/cpufeature.h>
+#include <asm/alternative-asm.h>
 
 #ifdef CONFIG_PARAVIRT
 #include <asm/asm-offsets.h>
@@ -41,6 +43,12 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET)
 L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET)
 L4_START_KERNEL = pgd_index(__START_KERNEL_map)
 L3_START_KERNEL = pud_index(__START_KERNEL_map)
+L4_VMALLOC_START = pgd_index(VMALLOC_START)
+L3_VMALLOC_START = pud_index(VMALLOC_START)
+L4_VMALLOC_END = pgd_index(VMALLOC_END)
+L3_VMALLOC_END = pud_index(VMALLOC_END)
+L4_VMEMMAP_START = pgd_index(VMEMMAP_START)
+L3_VMEMMAP_START = pud_index(VMEMMAP_START)
 
 	.text
 	__HEAD
@@ -89,11 +97,24 @@ startup_64:
 	 * Fixup the physical addresses in the page table
 	 */
 	addq	%rbp, early_level4_pgt + (L4_START_KERNEL*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_VMALLOC_END*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip)
+	addq	%rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip)
 
-	addq	%rbp, level3_kernel_pgt + (510*8)(%rip)
-	addq	%rbp, level3_kernel_pgt + (511*8)(%rip)
+	addq	%rbp, level3_ident_pgt + (0*8)(%rip)
+#ifndef CONFIG_XEN
+	addq	%rbp, level3_ident_pgt + (1*8)(%rip)
+#endif
+
+	addq	%rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip)
+
+	addq	%rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip)
+	addq	%rbp, level3_kernel_pgt + ((L3_START_KERNEL+1)*8)(%rip)
 
 	addq	%rbp, level2_fixmap_pgt + (506*8)(%rip)
+	addq	%rbp, level2_fixmap_pgt + (507*8)(%rip)
 
 	/*
 	 * Set up the identity mapping for the switchover.  These
@@ -174,11 +195,12 @@ ENTRY(secondary_startup_64)
 	 * after the boot processor executes this code.
 	 */
 
+	orq	$-1, %rbp
 	movq	$(init_level4_pgt - __START_KERNEL_map), %rax
 1:
 
-	/* Enable PAE mode and PGE */
-	movl	$(X86_CR4_PAE | X86_CR4_PGE), %ecx
+	/* Enable PAE mode and PSE/PGE */
+	movl	$(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %ecx
 	movq	%rcx, %cr4
 
 	/* Setup early boot stage 4 level pagetables. */
@@ -199,10 +221,19 @@ ENTRY(secondary_startup_64)
 	movl	$MSR_EFER, %ecx
 	rdmsr
 	btsl	$_EFER_SCE, %eax	/* Enable System Call */
-	btl	$20,%edi		/* No Execute supported? */
+	btl	$(X86_FEATURE_NX & 31),%edi	/* No Execute supported? */
 	jnc     1f
 	btsl	$_EFER_NX, %eax
+	cmpq	$-1, %rbp
+	je	1f
 	btsq	$_PAGE_BIT_NX,early_pmd_flags(%rip)
+	btsq	$_PAGE_BIT_NX, init_level4_pgt + 8*L4_PAGE_OFFSET(%rip)
+	btsq	$_PAGE_BIT_NX, init_level4_pgt + 8*L4_VMALLOC_START(%rip)
+	btsq	$_PAGE_BIT_NX, init_level4_pgt + 8*L4_VMALLOC_END(%rip)
+	btsq	$_PAGE_BIT_NX, init_level4_pgt + 8*L4_VMEMMAP_START(%rip)
+	btsq	$_PAGE_BIT_NX, level2_fixmap_pgt + 8*506(%rip)
+	btsq	$_PAGE_BIT_NX, level2_fixmap_pgt + 8*507(%rip)
+	btsq	$_PAGE_BIT_NX, __supported_pte_mask(%rip)
 1:	wrmsr				/* Make changes effective */
 
 	/* Setup cr0 */
@@ -282,6 +313,7 @@ ENTRY(secondary_startup_64)
 	 *	REX.W + FF /5 JMP m16:64 Jump far, absolute indirect,
 	 *		address given in m16:64.
 	 */
+	pax_set_fptr_mask
 	movq	initial_code(%rip),%rax
 	pushq	$0		# fake return address to stop unwinder
 	pushq	$__KERNEL_CS	# set correct cs
@@ -313,7 +345,7 @@ ENDPROC(start_cpu0)
 	.quad	INIT_PER_CPU_VAR(irq_stack_union)
 
 	GLOBAL(stack_start)
-	.quad  init_thread_union+THREAD_SIZE-8
+	.quad  init_thread_union+THREAD_SIZE-16
 	.word  0
 	__FINITDATA
 
@@ -391,7 +423,7 @@ ENTRY(early_idt_handler)
 	call dump_stack
 #ifdef CONFIG_KALLSYMS	
 	leaq early_idt_ripmsg(%rip),%rdi
-	movq 40(%rsp),%rsi	# %rip again
+	movq 88(%rsp),%rsi	# %rip again
 	call __print_symbol
 #endif
 #endif /* EARLY_PRINTK */
@@ -420,6 +452,7 @@ ENDPROC(early_idt_handler)
 early_recursion_flag:
 	.long 0
 
+	.section .rodata,"a",@progbits
 #ifdef CONFIG_EARLY_PRINTK
 early_idt_msg:
 	.asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n"
@@ -447,29 +480,52 @@ NEXT_PAGE(early_level4_pgt)
 NEXT_PAGE(early_dynamic_pgts)
 	.fill	512*EARLY_DYNAMIC_PAGE_TABLES,8,0
 
-	.data
+	.section .rodata,"a",@progbits
 
-#ifndef CONFIG_XEN
 NEXT_PAGE(init_level4_pgt)
-	.fill	512,8,0
-#else
-NEXT_PAGE(init_level4_pgt)
-	.quad   level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
 	.org    init_level4_pgt + L4_PAGE_OFFSET*8, 0
 	.quad   level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
+	.org	init_level4_pgt + L4_VMALLOC_START*8, 0
+	.quad	level3_vmalloc_start_pgt - __START_KERNEL_map + _KERNPG_TABLE
+	.org	init_level4_pgt + L4_VMALLOC_END*8, 0
+	.quad	level3_vmalloc_end_pgt - __START_KERNEL_map + _KERNPG_TABLE
+	.org	init_level4_pgt + L4_VMEMMAP_START*8, 0
+	.quad	level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE
 	.org    init_level4_pgt + L4_START_KERNEL*8, 0
 	/* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
 	.quad   level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+NEXT_PAGE(cpu_pgd)
+	.rept 2*NR_CPUS
+	.fill	512,8,0
+	.endr
+#endif
+
 NEXT_PAGE(level3_ident_pgt)
 	.quad	level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
+#ifdef CONFIG_XEN
 	.fill	511, 8, 0
+#else
+	.quad	level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE
+	.fill	510,8,0
+#endif
+
+NEXT_PAGE(level3_vmalloc_start_pgt)
+	.fill	512,8,0
+
+NEXT_PAGE(level3_vmalloc_end_pgt)
+	.fill	512,8,0
+
+NEXT_PAGE(level3_vmemmap_pgt)
+	.fill	L3_VMEMMAP_START,8,0
+	.quad	level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE
+
 NEXT_PAGE(level2_ident_pgt)
-	/* Since I easily can, map the first 1G.
+	/* Since I easily can, map the first 2G.
 	 * Don't set NX because code runs from these pages.
 	 */
-	PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD)
-#endif
+	PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD)
 
 NEXT_PAGE(level3_kernel_pgt)
 	.fill	L3_START_KERNEL,8,0
@@ -477,6 +533,9 @@ NEXT_PAGE(level3_kernel_pgt)
 	.quad	level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE
 	.quad	level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
 
+NEXT_PAGE(level2_vmemmap_pgt)
+	.fill	512,8,0
+
 NEXT_PAGE(level2_kernel_pgt)
 	/*
 	 * 512 MB kernel mapping. We spend a full page on this pagetable
@@ -494,28 +553,64 @@ NEXT_PAGE(level2_kernel_pgt)
 NEXT_PAGE(level2_fixmap_pgt)
 	.fill	506,8,0
 	.quad	level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
-	/* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */
-	.fill	5,8,0
+	.quad	level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE
+	/* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */
+	.fill	4,8,0
 
 NEXT_PAGE(level1_fixmap_pgt)
 	.fill	512,8,0
 
+NEXT_PAGE(level1_vsyscall_pgt)
+	.fill	512,8,0
+
 #undef PMDS
 
-	.data
+	.align PAGE_SIZE
+ENTRY(cpu_gdt_table)
+	.rept NR_CPUS
+	.quad	0x0000000000000000	/* NULL descriptor */
+	.quad	0x00cf9b000000ffff	/* __KERNEL32_CS */
+	.quad	0x00af9b000000ffff	/* __KERNEL_CS */
+	.quad	0x00cf93000000ffff	/* __KERNEL_DS */
+	.quad	0x00cffb000000ffff	/* __USER32_CS */
+	.quad	0x00cff3000000ffff	/* __USER_DS, __USER32_DS  */
+	.quad	0x00affb000000ffff	/* __USER_CS */
+
+#ifdef CONFIG_PAX_KERNEXEC
+	.quad	0x00af9b000000ffff	/* __KERNEXEC_KERNEL_CS */
+#else
+	.quad	0x0			/* unused */
+#endif
+
+	.quad	0,0			/* TSS */
+	.quad	0,0			/* LDT */
+	.quad	0,0,0			/* three TLS descriptors */
+	.quad	0x0000f40000000000	/* node/CPU stored in limit */
+	/* asm/segment.h:GDT_ENTRIES must match this */
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	.quad	0x00cf93000000ffff	/* __UDEREF_KERNEL_DS */
+#else
+	.quad	0x0			/* unused */
+#endif
+
+	/* zero the remaining page */
+	.fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0
+	.endr
+
 	.align 16
 	.globl early_gdt_descr
 early_gdt_descr:
 	.word	GDT_ENTRIES*8-1
 early_gdt_descr_base:
-	.quad	INIT_PER_CPU_VAR(gdt_page)
+	.quad	cpu_gdt_table
 
 ENTRY(phys_base)
 	/* This must match the first entry in level2_kernel_pgt */
 	.quad   0x0000000000000000
 
 #include "../../x86/xen/xen-head.S"
-	
-	__PAGE_ALIGNED_BSS
+
+	.section .rodata,"a",@progbits
 NEXT_PAGE(empty_zero_page)
 	.skip PAGE_SIZE
diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
index 05fd74f..c3548b1 100644
--- a/arch/x86/kernel/i386_ksyms_32.c
+++ b/arch/x86/kernel/i386_ksyms_32.c
@@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void);
 EXPORT_SYMBOL(cmpxchg8b_emu);
 #endif
 
+EXPORT_SYMBOL_GPL(cpu_gdt_table);
+
 /* Networking helper routines. */
 EXPORT_SYMBOL(csum_partial_copy_generic);
+EXPORT_SYMBOL(csum_partial_copy_generic_to_user);
+EXPORT_SYMBOL(csum_partial_copy_generic_from_user);
 
 EXPORT_SYMBOL(__get_user_1);
 EXPORT_SYMBOL(__get_user_2);
@@ -44,3 +48,11 @@ EXPORT_SYMBOL(___preempt_schedule);
 EXPORT_SYMBOL(___preempt_schedule_context);
 #endif
 #endif
+
+#ifdef CONFIG_PAX_KERNEXEC
+EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR);
+#endif
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+EXPORT_SYMBOL(cpu_pgd);
+#endif
diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
index d5dd808..b6432cf 100644
--- a/arch/x86/kernel/i387.c
+++ b/arch/x86/kernel/i387.c
@@ -51,7 +51,7 @@ static inline bool interrupted_kernel_fpu_idle(void)
 static inline bool interrupted_user_mode(void)
 {
 	struct pt_regs *regs = get_irq_regs();
-	return regs && user_mode_vm(regs);
+	return regs && user_mode(regs);
 }
 
 /*
diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c
index 8af8171..f8c1169 100644
--- a/arch/x86/kernel/i8259.c
+++ b/arch/x86/kernel/i8259.c
@@ -110,7 +110,7 @@ static int i8259A_irq_pending(unsigned int irq)
 static void make_8259A_irq(unsigned int irq)
 {
 	disable_irq_nosync(irq);
-	io_apic_irqs &= ~(1<<irq);
+	io_apic_irqs &= ~(1UL<<irq);
 	irq_set_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq,
 				      i8259A_chip.name);
 	enable_irq(irq);
@@ -209,7 +209,7 @@ spurious_8259A_irq:
 			       "spurious 8259A interrupt: IRQ%d.\n", irq);
 			spurious_irq_mask |= irqmask;
 		}
-		atomic_inc(&irq_err_count);
+		atomic_inc_unchecked(&irq_err_count);
 		/*
 		 * Theoretically we do not have to handle this IRQ,
 		 * but in Linux this does not cause problems and is
@@ -350,14 +350,16 @@ static void init_8259A(int auto_eoi)
 	/* (slave's support for AEOI in flat mode is to be investigated) */
 	outb_pic(SLAVE_ICW4_DEFAULT, PIC_SLAVE_IMR);
 
+	pax_open_kernel();
 	if (auto_eoi)
 		/*
 		 * In AEOI mode we just have to mask the interrupt
 		 * when acking.
 		 */
-		i8259A_chip.irq_mask_ack = disable_8259A_irq;
+		*(void **)&i8259A_chip.irq_mask_ack = disable_8259A_irq;
 	else
-		i8259A_chip.irq_mask_ack = mask_and_ack_8259A;
+		*(void **)&i8259A_chip.irq_mask_ack = mask_and_ack_8259A;
+	pax_close_kernel();
 
 	udelay(100);		/* wait for 8259A to initialize */
 
diff --git a/arch/x86/kernel/io_delay.c b/arch/x86/kernel/io_delay.c
index a979b5b..1d6db75 100644
--- a/arch/x86/kernel/io_delay.c
+++ b/arch/x86/kernel/io_delay.c
@@ -58,7 +58,7 @@ static int __init dmi_io_delay_0xed_port(const struct dmi_system_id *id)
  * Quirk table for systems that misbehave (lock up, etc.) if port
  * 0x80 is used:
  */
-static struct dmi_system_id __initdata io_delay_0xed_port_dmi_table[] = {
+static const struct dmi_system_id __initconst io_delay_0xed_port_dmi_table[] = {
 	{
 		.callback	= dmi_io_delay_0xed_port,
 		.ident		= "Compaq Presario V6000",
diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
index 4ddaf66..49d5c18 100644
--- a/arch/x86/kernel/ioport.c
+++ b/arch/x86/kernel/ioport.c
@@ -6,6 +6,7 @@
 #include <linux/sched.h>
 #include <linux/kernel.h>
 #include <linux/capability.h>
+#include <linux/security.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/ioport.h>
@@ -30,6 +31,12 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
 		return -EINVAL;
 	if (turn_on && !capable(CAP_SYS_RAWIO))
 		return -EPERM;
+#ifdef CONFIG_GRKERNSEC_IO
+	if (turn_on && grsec_disable_privio) {
+		gr_handle_ioperm();
+		return -ENODEV;
+	}
+#endif
 
 	/*
 	 * If it's the first ioperm() call in this thread's lifetime, set the
@@ -54,7 +61,7 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
 	 * because the ->io_bitmap_max value must match the bitmap
 	 * contents:
 	 */
-	tss = &per_cpu(init_tss, get_cpu());
+	tss = init_tss + get_cpu();
 
 	if (turn_on)
 		bitmap_clear(t->io_bitmap_ptr, from, num);
@@ -105,6 +112,12 @@ SYSCALL_DEFINE1(iopl, unsigned int, level)
 	if (level > old) {
 		if (!capable(CAP_SYS_RAWIO))
 			return -EPERM;
+#ifdef CONFIG_GRKERNSEC_IO
+		if (grsec_disable_privio) {
+			gr_handle_iopl();
+			return -ENODEV;
+		}
+#endif
 	}
 	regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
 	t->iopl = level << 12;
diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
index 922d285..6d20692 100644
--- a/arch/x86/kernel/irq.c
+++ b/arch/x86/kernel/irq.c
@@ -22,7 +22,7 @@
 #define CREATE_TRACE_POINTS
 #include <asm/trace/irq_vectors.h>
 
-atomic_t irq_err_count;
+atomic_unchecked_t irq_err_count;
 
 /* Function pointer for generic interrupt vector handling */
 void (*x86_platform_ipi_callback)(void) = NULL;
@@ -132,9 +132,9 @@ int arch_show_interrupts(struct seq_file *p, int prec)
 		seq_printf(p, "%10u ", irq_stats(j)->irq_hv_callback_count);
 	seq_printf(p, "  Hypervisor callback interrupts\n");
 #endif
-	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
+	seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count));
 #if defined(CONFIG_X86_IO_APIC)
-	seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count));
+	seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read_unchecked(&irq_mis_count));
 #endif
 	return 0;
 }
@@ -174,7 +174,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
 
 u64 arch_irq_stat(void)
 {
-	u64 sum = atomic_read(&irq_err_count);
+	u64 sum = atomic_read_unchecked(&irq_err_count);
 	return sum;
 }
 
diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index 63ce838..2ea3e06 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -29,6 +29,8 @@ EXPORT_PER_CPU_SYMBOL(irq_regs);
 
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
 
+extern void gr_handle_kernel_exploit(void);
+
 int sysctl_panic_on_stackoverflow __read_mostly;
 
 /* Debugging check for stack overflow: is there less than 1KB free? */
@@ -39,13 +41,14 @@ static int check_stack_overflow(void)
 	__asm__ __volatile__("andl %%esp,%0" :
 			     "=r" (sp) : "0" (THREAD_SIZE - 1));
 
-	return sp < (sizeof(struct thread_info) + STACK_WARN);
+	return sp < STACK_WARN;
 }
 
 static void print_stack_overflow(void)
 {
 	printk(KERN_WARNING "low stack detected by irq handler\n");
 	dump_stack();
+	gr_handle_kernel_exploit();
 	if (sysctl_panic_on_stackoverflow)
 		panic("low stack detected by irq handler - check messages\n");
 }
@@ -84,10 +87,9 @@ static inline void *current_stack(void)
 static inline int
 execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
 {
-	struct irq_stack *curstk, *irqstk;
+	struct irq_stack *irqstk;
 	u32 *isp, *prev_esp, arg1, arg2;
 
-	curstk = (struct irq_stack *) current_stack();
 	irqstk = __this_cpu_read(hardirq_stack);
 
 	/*
@@ -96,15 +98,19 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
 	 * handler) we can't do that and just have to keep using the
 	 * current stack (which is the irq stack already after all)
 	 */
-	if (unlikely(curstk == irqstk))
+	if (unlikely((void *)current_stack_pointer - (void *)irqstk < THREAD_SIZE))
 		return 0;
 
-	isp = (u32 *) ((char *)irqstk + sizeof(*irqstk));
+	isp = (u32 *) ((char *)irqstk + sizeof(*irqstk) - 8);
 
 	/* Save the next esp at the bottom of the stack */
 	prev_esp = (u32 *)irqstk;
 	*prev_esp = current_stack_pointer;
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(MAKE_MM_SEG(0));
+#endif
+
 	if (unlikely(overflow))
 		call_on_stack(print_stack_overflow, isp);
 
@@ -115,6 +121,11 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
 		     :  "0" (irq),   "1" (desc),  "2" (isp),
 			"D" (desc->handle_irq)
 		     : "memory", "cc", "ecx");
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 	return 1;
 }
 
@@ -123,32 +134,18 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
  */
 void irq_ctx_init(int cpu)
 {
-	struct irq_stack *irqstk;
-
 	if (per_cpu(hardirq_stack, cpu))
 		return;
 
-	irqstk = page_address(alloc_pages_node(cpu_to_node(cpu),
-					       THREADINFO_GFP,
-					       THREAD_SIZE_ORDER));
-	per_cpu(hardirq_stack, cpu) = irqstk;
-
-	irqstk = page_address(alloc_pages_node(cpu_to_node(cpu),
-					       THREADINFO_GFP,
-					       THREAD_SIZE_ORDER));
-	per_cpu(softirq_stack, cpu) = irqstk;
-
-	printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n",
-	       cpu, per_cpu(hardirq_stack, cpu),  per_cpu(softirq_stack, cpu));
+	per_cpu(hardirq_stack, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREADINFO_GFP, THREAD_SIZE_ORDER));
+	per_cpu(softirq_stack, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREADINFO_GFP, THREAD_SIZE_ORDER));
 }
 
 void do_softirq_own_stack(void)
 {
-	struct thread_info *curstk;
 	struct irq_stack *irqstk;
 	u32 *isp, *prev_esp;
 
-	curstk = current_stack();
 	irqstk = __this_cpu_read(softirq_stack);
 
 	/* build the stack frame on the softirq stack */
@@ -158,7 +155,16 @@ void do_softirq_own_stack(void)
 	prev_esp = (u32 *)irqstk;
 	*prev_esp = current_stack_pointer;
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(MAKE_MM_SEG(0));
+#endif
+
 	call_on_stack(__do_softirq, isp);
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 }
 
 bool handle_irq(unsigned irq, struct pt_regs *regs)
@@ -172,7 +178,7 @@ bool handle_irq(unsigned irq, struct pt_regs *regs)
 	if (unlikely(!desc))
 		return false;
 
-	if (user_mode_vm(regs) || !execute_on_irq_stack(overflow, desc, irq)) {
+	if (user_mode(regs) || !execute_on_irq_stack(overflow, desc, irq)) {
 		if (unlikely(overflow))
 			print_stack_overflow();
 		desc->handle_irq(irq, desc);
diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
index 4d1c746..55a22d6 100644
--- a/arch/x86/kernel/irq_64.c
+++ b/arch/x86/kernel/irq_64.c
@@ -26,6 +26,8 @@ EXPORT_PER_CPU_SYMBOL(irq_stat);
 DEFINE_PER_CPU(struct pt_regs *, irq_regs);
 EXPORT_PER_CPU_SYMBOL(irq_regs);
 
+extern void gr_handle_kernel_exploit(void);
+
 int sysctl_panic_on_stackoverflow;
 
 /*
@@ -44,7 +46,7 @@ static inline void stack_overflow_check(struct pt_regs *regs)
 	u64 estack_top, estack_bottom;
 	u64 curbase = (u64)task_stack_page(current);
 
-	if (user_mode_vm(regs))
+	if (user_mode(regs))
 		return;
 
 	if (regs->sp >= curbase + sizeof(struct thread_info) +
@@ -69,6 +71,8 @@ static inline void stack_overflow_check(struct pt_regs *regs)
 		irq_stack_top, irq_stack_bottom,
 		estack_top, estack_bottom);
 
+	gr_handle_kernel_exploit();
+
 	if (sysctl_panic_on_stackoverflow)
 		panic("low stack detected by irq handler - check messages\n");
 #endif
diff --git a/arch/x86/kernel/jump_label.c b/arch/x86/kernel/jump_label.c
index 26d5a55..a01160a 100644
--- a/arch/x86/kernel/jump_label.c
+++ b/arch/x86/kernel/jump_label.c
@@ -51,7 +51,7 @@ static void __jump_label_transform(struct jump_entry *entry,
 			 * Jump label is enabled for the first time.
 			 * So we expect a default_nop...
 			 */
-			if (unlikely(memcmp((void *)entry->code, default_nop, 5)
+			if (unlikely(memcmp((void *)ktla_ktva(entry->code), default_nop, 5)
 				     != 0))
 				bug_at((void *)entry->code, __LINE__);
 		} else {
@@ -59,7 +59,7 @@ static void __jump_label_transform(struct jump_entry *entry,
 			 * ...otherwise expect an ideal_nop. Otherwise
 			 * something went horribly wrong.
 			 */
-			if (unlikely(memcmp((void *)entry->code, ideal_nop, 5)
+			if (unlikely(memcmp((void *)ktla_ktva(entry->code), ideal_nop, 5)
 				     != 0))
 				bug_at((void *)entry->code, __LINE__);
 		}
@@ -75,13 +75,13 @@ static void __jump_label_transform(struct jump_entry *entry,
 		 * are converting the default nop to the ideal nop.
 		 */
 		if (init) {
-			if (unlikely(memcmp((void *)entry->code, default_nop, 5) != 0))
+			if (unlikely(memcmp((void *)ktla_ktva(entry->code), default_nop, 5) != 0))
 				bug_at((void *)entry->code, __LINE__);
 		} else {
 			code.jump = 0xe9;
 			code.offset = entry->target -
 				(entry->code + JUMP_LABEL_NOP_SIZE);
-			if (unlikely(memcmp((void *)entry->code, &code, 5) != 0))
+			if (unlikely(memcmp((void *)ktla_ktva(entry->code), &code, 5) != 0))
 				bug_at((void *)entry->code, __LINE__);
 		}
 		memcpy(&code, ideal_nops[NOP_ATOMIC5], JUMP_LABEL_NOP_SIZE);
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 7ec1d5f..5a7d130 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -126,11 +126,11 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
 #ifdef CONFIG_X86_32
 	switch (regno) {
 	case GDB_SS:
-		if (!user_mode_vm(regs))
+		if (!user_mode(regs))
 			*(unsigned long *)mem = __KERNEL_DS;
 		break;
 	case GDB_SP:
-		if (!user_mode_vm(regs))
+		if (!user_mode(regs))
 			*(unsigned long *)mem = kernel_stack_pointer(regs);
 		break;
 	case GDB_GS:
@@ -228,7 +228,10 @@ static void kgdb_correct_hw_break(void)
 		bp->attr.bp_addr = breakinfo[breakno].addr;
 		bp->attr.bp_len = breakinfo[breakno].len;
 		bp->attr.bp_type = breakinfo[breakno].type;
-		info->address = breakinfo[breakno].addr;
+		if (breakinfo[breakno].type == X86_BREAKPOINT_EXECUTE)
+			info->address = ktla_ktva(breakinfo[breakno].addr);
+		else
+			info->address = breakinfo[breakno].addr;
 		info->len = breakinfo[breakno].len;
 		info->type = breakinfo[breakno].type;
 		val = arch_install_hw_breakpoint(bp);
@@ -475,12 +478,12 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
 	case 'k':
 		/* clear the trace bit */
 		linux_regs->flags &= ~X86_EFLAGS_TF;
-		atomic_set(&kgdb_cpu_doing_single_step, -1);
+		atomic_set_unchecked(&kgdb_cpu_doing_single_step, -1);
 
 		/* set the trace bit if we're stepping */
 		if (remcomInBuffer[0] == 's') {
 			linux_regs->flags |= X86_EFLAGS_TF;
-			atomic_set(&kgdb_cpu_doing_single_step,
+			atomic_set_unchecked(&kgdb_cpu_doing_single_step,
 				   raw_smp_processor_id());
 		}
 
@@ -545,7 +548,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
 
 	switch (cmd) {
 	case DIE_DEBUG:
-		if (atomic_read(&kgdb_cpu_doing_single_step) != -1) {
+		if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) {
 			if (user_mode(regs))
 				return single_step_cont(regs, args);
 			break;
@@ -750,11 +753,11 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
 #endif /* CONFIG_DEBUG_RODATA */
 
 	bpt->type = BP_BREAKPOINT;
-	err = probe_kernel_read(bpt->saved_instr, (char *)bpt->bpt_addr,
+	err = probe_kernel_read(bpt->saved_instr, ktla_ktva((char *)bpt->bpt_addr),
 				BREAK_INSTR_SIZE);
 	if (err)
 		return err;
-	err = probe_kernel_write((char *)bpt->bpt_addr,
+	err = probe_kernel_write(ktla_ktva((char *)bpt->bpt_addr),
 				 arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE);
 #ifdef CONFIG_DEBUG_RODATA
 	if (!err)
@@ -767,7 +770,7 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
 		return -EBUSY;
 	text_poke((void *)bpt->bpt_addr, arch_kgdb_ops.gdb_bpt_instr,
 		  BREAK_INSTR_SIZE);
-	err = probe_kernel_read(opc, (char *)bpt->bpt_addr, BREAK_INSTR_SIZE);
+	err = probe_kernel_read(opc, ktla_ktva((char *)bpt->bpt_addr), BREAK_INSTR_SIZE);
 	if (err)
 		return err;
 	if (memcmp(opc, arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE))
@@ -792,13 +795,13 @@ int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt)
 	if (mutex_is_locked(&text_mutex))
 		goto knl_write;
 	text_poke((void *)bpt->bpt_addr, bpt->saved_instr, BREAK_INSTR_SIZE);
-	err = probe_kernel_read(opc, (char *)bpt->bpt_addr, BREAK_INSTR_SIZE);
+	err = probe_kernel_read(opc, ktla_ktva((char *)bpt->bpt_addr), BREAK_INSTR_SIZE);
 	if (err || memcmp(opc, bpt->saved_instr, BREAK_INSTR_SIZE))
 		goto knl_write;
 	return err;
 knl_write:
 #endif /* CONFIG_DEBUG_RODATA */
-	return probe_kernel_write((char *)bpt->bpt_addr,
+	return probe_kernel_write(ktla_ktva((char *)bpt->bpt_addr),
 				  (char *)bpt->saved_instr, BREAK_INSTR_SIZE);
 }
 
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 67e6d19..731ed28 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -120,9 +120,12 @@ __synthesize_relative_insn(void *from, void *to, u8 op)
 		s32 raddr;
 	} __packed *insn;
 
-	insn = (struct __arch_relative_insn *)from;
+	insn = (struct __arch_relative_insn *)ktla_ktva(from);
+
+	pax_open_kernel();
 	insn->raddr = (s32)((long)(to) - ((long)(from) + 5));
 	insn->op = op;
+	pax_close_kernel();
 }
 
 /* Insert a jump instruction at address 'from', which jumps to address 'to'.*/
@@ -168,7 +171,7 @@ int can_boost(kprobe_opcode_t *opcodes)
 	kprobe_opcode_t opcode;
 	kprobe_opcode_t *orig_opcodes = opcodes;
 
-	if (search_exception_tables((unsigned long)opcodes))
+	if (search_exception_tables(ktva_ktla((unsigned long)opcodes)))
 		return 0;	/* Page fault may occur on this address. */
 
 retry:
@@ -242,9 +245,9 @@ __recover_probed_insn(kprobe_opcode_t *buf, unsigned long addr)
 	 *  for the first byte, we can recover the original instruction
 	 *  from it and kp->opcode.
 	 */
-	memcpy(buf, kp->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
+	memcpy(buf, ktla_ktva(kp->addr), MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
 	buf[0] = kp->opcode;
-	return (unsigned long)buf;
+	return ktva_ktla((unsigned long)buf);
 }
 
 /*
@@ -336,7 +339,9 @@ int __copy_instruction(u8 *dest, u8 *src)
 	/* Another subsystem puts a breakpoint, failed to recover */
 	if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION)
 		return 0;
+	pax_open_kernel();
 	memcpy(dest, insn.kaddr, insn.length);
+	pax_close_kernel();
 
 #ifdef CONFIG_X86_64
 	if (insn_rip_relative(&insn)) {
@@ -363,7 +368,9 @@ int __copy_instruction(u8 *dest, u8 *src)
 			return 0;
 		}
 		disp = (u8 *) dest + insn_offset_displacement(&insn);
+		pax_open_kernel();
 		*(s32 *) disp = (s32) newdisp;
+		pax_close_kernel();
 	}
 #endif
 	return insn.length;
@@ -505,7 +512,7 @@ static void setup_singlestep(struct kprobe *p, struct pt_regs *regs,
 		 * nor set current_kprobe, because it doesn't use single
 		 * stepping.
 		 */
-		regs->ip = (unsigned long)p->ainsn.insn;
+		regs->ip = ktva_ktla((unsigned long)p->ainsn.insn);
 		preempt_enable_no_resched();
 		return;
 	}
@@ -522,9 +529,9 @@ static void setup_singlestep(struct kprobe *p, struct pt_regs *regs,
 	regs->flags &= ~X86_EFLAGS_IF;
 	/* single step inline if the instruction is an int3 */
 	if (p->opcode == BREAKPOINT_INSTRUCTION)
-		regs->ip = (unsigned long)p->addr;
+		regs->ip = ktla_ktva((unsigned long)p->addr);
 	else
-		regs->ip = (unsigned long)p->ainsn.insn;
+		regs->ip = ktva_ktla((unsigned long)p->ainsn.insn);
 }
 NOKPROBE_SYMBOL(setup_singlestep);
 
@@ -574,7 +581,7 @@ int kprobe_int3_handler(struct pt_regs *regs)
 	struct kprobe *p;
 	struct kprobe_ctlblk *kcb;
 
-	if (user_mode_vm(regs))
+	if (user_mode(regs))
 		return 0;
 
 	addr = (kprobe_opcode_t *)(regs->ip - sizeof(kprobe_opcode_t));
@@ -609,7 +616,7 @@ int kprobe_int3_handler(struct pt_regs *regs)
 				setup_singlestep(p, regs, kcb, 0);
 			return 1;
 		}
-	} else if (*addr != BREAKPOINT_INSTRUCTION) {
+	} else if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) {
 		/*
 		 * The breakpoint instruction was removed right
 		 * after we hit it.  Another cpu has removed
@@ -656,6 +663,9 @@ static void __used kretprobe_trampoline_holder(void)
 			"	movq %rax, 152(%rsp)\n"
 			RESTORE_REGS_STRING
 			"	popfq\n"
+#ifdef KERNEXEC_PLUGIN
+			"	btsq $63,(%rsp)\n"
+#endif
 #else
 			"	pushf\n"
 			SAVE_REGS_STRING
@@ -796,7 +806,7 @@ static void resume_execution(struct kprobe *p, struct pt_regs *regs,
 			     struct kprobe_ctlblk *kcb)
 {
 	unsigned long *tos = stack_addr(regs);
-	unsigned long copy_ip = (unsigned long)p->ainsn.insn;
+	unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn);
 	unsigned long orig_ip = (unsigned long)p->addr;
 	kprobe_opcode_t *insn = p->ainsn.insn;
 
@@ -979,7 +989,7 @@ int kprobe_exceptions_notify(struct notifier_block *self, unsigned long val,
 	struct die_args *args = data;
 	int ret = NOTIFY_DONE;
 
-	if (args->regs && user_mode_vm(args->regs))
+	if (args->regs && user_mode(args->regs))
 		return ret;
 
 	if (val == DIE_GPF) {
diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
index f304773..551e63c 100644
--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -79,6 +79,7 @@ found:
 /* Insert a move instruction which sets a pointer to eax/rdi (1st arg). */
 static void synthesize_set_arg1(kprobe_opcode_t *addr, unsigned long val)
 {
+	pax_open_kernel();
 #ifdef CONFIG_X86_64
 	*addr++ = 0x48;
 	*addr++ = 0xbf;
@@ -86,6 +87,7 @@ static void synthesize_set_arg1(kprobe_opcode_t *addr, unsigned long val)
 	*addr++ = 0xb8;
 #endif
 	*(unsigned long *)addr = val;
+	pax_close_kernel();
 }
 
 asm (
@@ -337,7 +339,7 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op)
 	 * Verify if the address gap is in 2GB range, because this uses
 	 * a relative jump.
 	 */
-	rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE;
+	rel = (long)op->optinsn.insn - ktla_ktva((long)op->kp.addr) + RELATIVEJUMP_SIZE;
 	if (abs(rel) > 0x7fffffff)
 		return -ERANGE;
 
@@ -352,16 +354,18 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op)
 	op->optinsn.size = ret;
 
 	/* Copy arch-dep-instance from template */
-	memcpy(buf, &optprobe_template_entry, TMPL_END_IDX);
+	pax_open_kernel();
+	memcpy(buf, ktla_ktva(&optprobe_template_entry), TMPL_END_IDX);
+	pax_close_kernel();
 
 	/* Set probe information */
 	synthesize_set_arg1(buf + TMPL_MOVE_IDX, (unsigned long)op);
 
 	/* Set probe function call */
-	synthesize_relcall(buf + TMPL_CALL_IDX, optimized_callback);
+	synthesize_relcall(ktva_ktla(buf) + TMPL_CALL_IDX, optimized_callback);
 
 	/* Set returning jmp instruction at the tail of out-of-line buffer */
-	synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size,
+	synthesize_reljump(ktva_ktla(buf) + TMPL_END_IDX + op->optinsn.size,
 			   (u8 *)op->kp.addr + op->optinsn.size);
 
 	flush_icache_range((unsigned long) buf,
@@ -386,7 +390,7 @@ void arch_optimize_kprobes(struct list_head *oplist)
 		WARN_ON(kprobe_disabled(&op->kp));
 
 		/* Backup instructions which will be replaced by jump address */
-		memcpy(op->optinsn.copied_insn, op->kp.addr + INT3_SIZE,
+		memcpy(op->optinsn.copied_insn, ktla_ktva(op->kp.addr) + INT3_SIZE,
 		       RELATIVE_ADDR_SIZE);
 
 		insn_buf[0] = RELATIVEJUMP_OPCODE;
@@ -434,7 +438,7 @@ int setup_detour_execution(struct kprobe *p, struct pt_regs *regs, int reenter)
 		/* This kprobe is really able to run optimized path. */
 		op = container_of(p, struct optimized_kprobe, kp);
 		/* Detour through copied instructions */
-		regs->ip = (unsigned long)op->optinsn.insn + TMPL_END_IDX;
+		regs->ip = ktva_ktla((unsigned long)op->optinsn.insn) + TMPL_END_IDX;
 		if (!reenter)
 			reset_current_kprobe();
 		preempt_enable_no_resched();
diff --git a/arch/x86/kernel/ksysfs.c b/arch/x86/kernel/ksysfs.c
index c2bedae..25e7ab60 100644
--- a/arch/x86/kernel/ksysfs.c
+++ b/arch/x86/kernel/ksysfs.c
@@ -184,7 +184,7 @@ out:
 
 static struct kobj_attribute type_attr = __ATTR_RO(type);
 
-static struct bin_attribute data_attr = {
+static bin_attribute_no_const data_attr __read_only = {
 	.attr = {
 		.name = "data",
 		.mode = S_IRUGO,
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index c37886d..d851d32 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -66,13 +66,13 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
 	if (reload) {
 #ifdef CONFIG_SMP
 		preempt_disable();
-		load_LDT(pc);
+		load_LDT_nolock(pc);
 		if (!cpumask_equal(mm_cpumask(current->mm),
 				   cpumask_of(smp_processor_id())))
 			smp_call_function(flush_ldt, current->mm, 1);
 		preempt_enable();
 #else
-		load_LDT(pc);
+		load_LDT_nolock(pc);
 #endif
 	}
 	if (oldsize) {
@@ -94,7 +94,7 @@ static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
 		return err;
 
 	for (i = 0; i < old->size; i++)
-		write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE);
+		write_ldt_entry(new->ldt, i, old->ldt + i);
 	return 0;
 }
 
@@ -115,6 +115,24 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
 		retval = copy_ldt(&mm->context, &old_mm->context);
 		mutex_unlock(&old_mm->context.lock);
 	}
+
+	if (tsk == current) {
+		mm->context.vdso = 0;
+
+#ifdef CONFIG_X86_32
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+		mm->context.user_cs_base = 0UL;
+		mm->context.user_cs_limit = ~0UL;
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
+		cpus_clear(mm->context.cpu_user_cs_mask);
+#endif
+
+#endif
+#endif
+
+	}
+
 	return retval;
 }
 
@@ -229,6 +247,13 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
 		}
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) {
+		error = -EINVAL;
+		goto out_unlock;
+	}
+#endif
+
 	if (!IS_ENABLED(CONFIG_X86_16BIT) && !ldt_info.seg_32bit) {
 		error = -EINVAL;
 		goto out_unlock;
diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
index 1667b1d..16492c5 100644
--- a/arch/x86/kernel/machine_kexec_32.c
+++ b/arch/x86/kernel/machine_kexec_32.c
@@ -25,7 +25,7 @@
 #include <asm/cacheflush.h>
 #include <asm/debugreg.h>
 
-static void set_idt(void *newidt, __u16 limit)
+static void set_idt(struct desc_struct *newidt, __u16 limit)
 {
 	struct desc_ptr curidt;
 
@@ -37,7 +37,7 @@ static void set_idt(void *newidt, __u16 limit)
 }
 
 
-static void set_gdt(void *newgdt, __u16 limit)
+static void set_gdt(struct desc_struct *newgdt, __u16 limit)
 {
 	struct desc_ptr curgdt;
 
@@ -215,7 +215,7 @@ void machine_kexec(struct kimage *image)
 	}
 
 	control_page = page_address(image->control_code_page);
-	memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE);
+	memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE);
 
 	relocate_kernel_ptr = control_page;
 	page_list[PA_CONTROL_PAGE] = __pa(control_page);
diff --git a/arch/x86/kernel/mcount_64.S b/arch/x86/kernel/mcount_64.S
index c050a01..5774072 100644
--- a/arch/x86/kernel/mcount_64.S
+++ b/arch/x86/kernel/mcount_64.S
@@ -7,7 +7,7 @@
 #include <linux/linkage.h>
 #include <asm/ptrace.h>
 #include <asm/ftrace.h>
-
+#include <asm/alternative-asm.h>
 
 	.code64
 	.section .entry.text, "ax"
@@ -24,8 +24,9 @@
 #ifdef CONFIG_DYNAMIC_FTRACE
 
 ENTRY(function_hook)
+	pax_force_retaddr
 	retq
-END(function_hook)
+ENDPROC(function_hook)
 
 /* skip is set if stack has been adjusted */
 .macro ftrace_caller_setup skip=0
@@ -66,8 +67,9 @@ GLOBAL(ftrace_graph_call)
 #endif
 
 GLOBAL(ftrace_stub)
+	pax_force_retaddr
 	retq
-END(ftrace_caller)
+ENDPROC(ftrace_caller)
 
 ENTRY(ftrace_regs_caller)
 	/* Save the current flags before compare (in SS location)*/
@@ -135,7 +137,7 @@ ftrace_restore_flags:
 	popfq
 	jmp  ftrace_stub
 
-END(ftrace_regs_caller)
+ENDPROC(ftrace_regs_caller)
 
 
 #else /* ! CONFIG_DYNAMIC_FTRACE */
@@ -156,6 +158,7 @@ ENTRY(function_hook)
 #endif
 
 GLOBAL(ftrace_stub)
+	pax_force_retaddr
 	retq
 
 trace:
@@ -169,12 +172,13 @@ trace:
 #endif
 	subq $MCOUNT_INSN_SIZE, %rdi
 
+	pax_force_fptr ftrace_trace_function
 	call   *ftrace_trace_function
 
 	MCOUNT_RESTORE_FRAME
 
 	jmp ftrace_stub
-END(function_hook)
+ENDPROC(function_hook)
 #endif /* CONFIG_DYNAMIC_FTRACE */
 #endif /* CONFIG_FUNCTION_TRACER */
 
@@ -196,8 +200,9 @@ ENTRY(ftrace_graph_caller)
 
 	MCOUNT_RESTORE_FRAME
 
+	pax_force_retaddr
 	retq
-END(ftrace_graph_caller)
+ENDPROC(ftrace_graph_caller)
 
 GLOBAL(return_to_handler)
 	subq  $24, %rsp
@@ -213,5 +218,7 @@ GLOBAL(return_to_handler)
 	movq 8(%rsp), %rdx
 	movq (%rsp), %rax
 	addq $24, %rsp
+	pax_force_fptr %rdi
 	jmp *%rdi
+ENDPROC(return_to_handler)
 #endif
diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
index e69f988..da078ea 100644
--- a/arch/x86/kernel/module.c
+++ b/arch/x86/kernel/module.c
@@ -81,17 +81,62 @@ static unsigned long int get_module_load_offset(void)
 }
 #endif
 
-void *module_alloc(unsigned long size)
+static inline void *__module_alloc(unsigned long size, pgprot_t prot)
 {
-	if (PAGE_ALIGN(size) > MODULES_LEN)
+	if (!size || PAGE_ALIGN(size) > MODULES_LEN)
 		return NULL;
 	return __vmalloc_node_range(size, 1,
 				    MODULES_VADDR + get_module_load_offset(),
-				    MODULES_END, GFP_KERNEL | __GFP_HIGHMEM,
-				    PAGE_KERNEL_EXEC, NUMA_NO_NODE,
+				    MODULES_END, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO,
+				    prot, NUMA_NO_NODE,
 				    __builtin_return_address(0));
 }
 
+void *module_alloc(unsigned long size)
+{
+
+#ifdef CONFIG_PAX_KERNEXEC
+	return __module_alloc(size, PAGE_KERNEL);
+#else
+	return __module_alloc(size, PAGE_KERNEL_EXEC);
+#endif
+
+}
+
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_32
+void *module_alloc_exec(unsigned long size)
+{
+	struct vm_struct *area;
+
+	if (size == 0)
+		return NULL;
+
+	area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END);
+return area ? area->addr : NULL;
+}
+EXPORT_SYMBOL(module_alloc_exec);
+
+void module_free_exec(struct module *mod, void *module_region)
+{
+	vunmap(module_region);
+}
+EXPORT_SYMBOL(module_free_exec);
+#else
+void module_free_exec(struct module *mod, void *module_region)
+{
+	module_free(mod, module_region);
+}
+EXPORT_SYMBOL(module_free_exec);
+
+void *module_alloc_exec(unsigned long size)
+{
+	return __module_alloc(size, PAGE_KERNEL_RX);
+}
+EXPORT_SYMBOL(module_alloc_exec);
+#endif
+#endif
+
 #ifdef CONFIG_X86_32
 int apply_relocate(Elf32_Shdr *sechdrs,
 		   const char *strtab,
@@ -102,14 +147,16 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 	unsigned int i;
 	Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
 	Elf32_Sym *sym;
-	uint32_t *location;
+	uint32_t *plocation, location;
 
 	DEBUGP("Applying relocate section %u to %u\n",
 	       relsec, sechdrs[relsec].sh_info);
 	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
 		/* This is where to make the change */
-		location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
-			+ rel[i].r_offset;
+		plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset;
+		location = (uint32_t)plocation;
+		if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR)
+			plocation = ktla_ktva((void *)plocation);
 		/* This is the symbol it is referring to.  Note that all
 		   undefined symbols have been resolved.  */
 		sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
@@ -118,11 +165,15 @@ int apply_relocate(Elf32_Shdr *sechdrs,
 		switch (ELF32_R_TYPE(rel[i].r_info)) {
 		case R_386_32:
 			/* We add the value into the location given */
-			*location += sym->st_value;
+			pax_open_kernel();
+			*plocation += sym->st_value;
+			pax_close_kernel();
 			break;
 		case R_386_PC32:
 			/* Add the value, subtract its position */
-			*location += sym->st_value - (uint32_t)location;
+			pax_open_kernel();
+			*plocation += sym->st_value - location;
+			pax_close_kernel();
 			break;
 		default:
 			pr_err("%s: Unknown relocation: %u\n",
@@ -167,21 +218,30 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
 		case R_X86_64_NONE:
 			break;
 		case R_X86_64_64:
+			pax_open_kernel();
 			*(u64 *)loc = val;
+			pax_close_kernel();
 			break;
 		case R_X86_64_32:
+			pax_open_kernel();
 			*(u32 *)loc = val;
+			pax_close_kernel();
 			if (val != *(u32 *)loc)
 				goto overflow;
 			break;
 		case R_X86_64_32S:
+			pax_open_kernel();
 			*(s32 *)loc = val;
+			pax_close_kernel();
 			if ((s64)val != *(s32 *)loc)
 				goto overflow;
 			break;
 		case R_X86_64_PC32:
 			val -= (u64)loc;
+			pax_open_kernel();
 			*(u32 *)loc = val;
+			pax_close_kernel();
+
 #if 0
 			if ((s64)val != *(s32 *)loc)
 				goto overflow;
diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
index c9603ac..9f88728 100644
--- a/arch/x86/kernel/msr.c
+++ b/arch/x86/kernel/msr.c
@@ -37,6 +37,7 @@
 #include <linux/notifier.h>
 #include <linux/uaccess.h>
 #include <linux/gfp.h>
+#include <linux/grsecurity.h>
 
 #include <asm/processor.h>
 #include <asm/msr.h>
@@ -103,6 +104,11 @@ static ssize_t msr_write(struct file *file, const char __user *buf,
 	int err = 0;
 	ssize_t bytes = 0;
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+	gr_handle_msr_write();
+	return -EPERM;
+#endif
+
 	if (count % 8)
 		return -EINVAL;	/* Invalid chunk size */
 
@@ -150,6 +156,10 @@ static long msr_ioctl(struct file *file, unsigned int ioc, unsigned long arg)
 			err = -EBADF;
 			break;
 		}
+#ifdef CONFIG_GRKERNSEC_KMEM
+		gr_handle_msr_write();
+		return -EPERM;
+#endif
 		if (copy_from_user(&regs, uregs, sizeof regs)) {
 			err = -EFAULT;
 			break;
@@ -233,7 +243,7 @@ static int msr_class_cpu_callback(struct notifier_block *nfb,
 	return notifier_from_errno(err);
 }
 
-static struct notifier_block __refdata msr_class_cpu_notifier = {
+static struct notifier_block msr_class_cpu_notifier = {
 	.notifier_call = msr_class_cpu_callback,
 };
 
diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
index c3e985d..110a36a 100644
--- a/arch/x86/kernel/nmi.c
+++ b/arch/x86/kernel/nmi.c
@@ -98,16 +98,16 @@ fs_initcall(nmi_warning_debugfs);
 
 static void nmi_max_handler(struct irq_work *w)
 {
-	struct nmiaction *a = container_of(w, struct nmiaction, irq_work);
+	struct nmiwork *n = container_of(w, struct nmiwork, irq_work);
 	int remainder_ns, decimal_msecs;
-	u64 whole_msecs = ACCESS_ONCE(a->max_duration);
+	u64 whole_msecs = ACCESS_ONCE(n->max_duration);
 
 	remainder_ns = do_div(whole_msecs, (1000 * 1000));
 	decimal_msecs = remainder_ns / 1000;
 
 	printk_ratelimited(KERN_INFO
 		"INFO: NMI handler (%ps) took too long to run: %lld.%03d msecs\n",
-		a->handler, whole_msecs, decimal_msecs);
+		n->action->handler, whole_msecs, decimal_msecs);
 }
 
 static int nmi_handle(unsigned int type, struct pt_regs *regs, bool b2b)
@@ -134,11 +134,11 @@ static int nmi_handle(unsigned int type, struct pt_regs *regs, bool b2b)
 		delta = sched_clock() - delta;
 		trace_nmi_handler(a->handler, (int)delta, thishandled);
 
-		if (delta < nmi_longest_ns || delta < a->max_duration)
+		if (delta < nmi_longest_ns || delta < a->work->max_duration)
 			continue;
 
-		a->max_duration = delta;
-		irq_work_queue(&a->irq_work);
+		a->work->max_duration = delta;
+		irq_work_queue(&a->work->irq_work);
 	}
 
 	rcu_read_unlock();
@@ -148,7 +148,7 @@ static int nmi_handle(unsigned int type, struct pt_regs *regs, bool b2b)
 }
 NOKPROBE_SYMBOL(nmi_handle);
 
-int __register_nmi_handler(unsigned int type, struct nmiaction *action)
+int __register_nmi_handler(unsigned int type, const struct nmiaction *action)
 {
 	struct nmi_desc *desc = nmi_to_desc(type);
 	unsigned long flags;
@@ -156,7 +156,8 @@ int __register_nmi_handler(unsigned int type, struct nmiaction *action)
 	if (!action->handler)
 		return -EINVAL;
 
-	init_irq_work(&action->irq_work, nmi_max_handler);
+	action->work->action = action;
+	init_irq_work(&action->work->irq_work, nmi_max_handler);
 
 	spin_lock_irqsave(&desc->lock, flags);
 
@@ -174,9 +175,9 @@ int __register_nmi_handler(unsigned int type, struct nmiaction *action)
 	 * event confuses some handlers (kdump uses this flag)
 	 */
 	if (action->flags & NMI_FLAG_FIRST)
-		list_add_rcu(&action->list, &desc->head);
+		pax_list_add_rcu((struct list_head *)&action->list, &desc->head);
 	else
-		list_add_tail_rcu(&action->list, &desc->head);
+		pax_list_add_tail_rcu((struct list_head *)&action->list, &desc->head);
 	
 	spin_unlock_irqrestore(&desc->lock, flags);
 	return 0;
@@ -199,7 +200,7 @@ void unregister_nmi_handler(unsigned int type, const char *name)
 		if (!strcmp(n->name, name)) {
 			WARN(in_nmi(),
 				"Trying to free NMI (%s) from NMI context!\n", n->name);
-			list_del_rcu(&n->list);
+			pax_list_del_rcu((struct list_head *)&n->list);
 			break;
 		}
 	}
@@ -528,6 +529,17 @@ static inline void nmi_nesting_postprocess(void)
 dotraplinkage notrace void
 do_nmi(struct pt_regs *regs, long error_code)
 {
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	if (!user_mode(regs)) {
+		unsigned long cs = regs->cs & 0xFFFF;
+		unsigned long ip = ktva_ktla(regs->ip);
+
+		if ((cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS) && ip <= (unsigned long)_etext)
+			regs->ip = ip;
+	}
+#endif
+
 	nmi_nesting_preprocess(regs);
 
 	nmi_enter();
diff --git a/arch/x86/kernel/nmi_selftest.c b/arch/x86/kernel/nmi_selftest.c
index 6d9582e..f746287 100644
--- a/arch/x86/kernel/nmi_selftest.c
+++ b/arch/x86/kernel/nmi_selftest.c
@@ -43,7 +43,7 @@ static void __init init_nmi_testsuite(void)
 {
 	/* trap all the unknown NMIs we may generate */
 	register_nmi_handler(NMI_UNKNOWN, nmi_unk_cb, 0, "nmi_selftest_unk",
-			__initdata);
+			__initconst);
 }
 
 static void __init cleanup_nmi_testsuite(void)
@@ -66,7 +66,7 @@ static void __init test_nmi_ipi(struct cpumask *mask)
 	unsigned long timeout;
 
 	if (register_nmi_handler(NMI_LOCAL, test_nmi_ipi_callback,
-				 NMI_FLAG_FIRST, "nmi_selftest", __initdata)) {
+				 NMI_FLAG_FIRST, "nmi_selftest", __initconst)) {
 		nmi_fail = FAILURE;
 		return;
 	}
diff --git a/arch/x86/kernel/paravirt-spinlocks.c b/arch/x86/kernel/paravirt-spinlocks.c
index bbb6c73..24a58ef 100644
--- a/arch/x86/kernel/paravirt-spinlocks.c
+++ b/arch/x86/kernel/paravirt-spinlocks.c
@@ -8,7 +8,7 @@
 
 #include <asm/paravirt.h>
 
-struct pv_lock_ops pv_lock_ops = {
+struct pv_lock_ops pv_lock_ops __read_only = {
 #ifdef CONFIG_SMP
 	.lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop),
 	.unlock_kick = paravirt_nop,
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 548d25f..f8fb99c 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -56,6 +56,9 @@ u64 _paravirt_ident_64(u64 x)
 {
 	return x;
 }
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
+PV_CALLEE_SAVE_REGS_THUNK(_paravirt_ident_64);
+#endif
 
 void __init default_banner(void)
 {
@@ -142,16 +145,20 @@ unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
 
 	if (opfunc == NULL)
 		/* If there's no function, patch it with a ud2a (BUG) */
-		ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
-	else if (opfunc == _paravirt_nop)
+		ret = paravirt_patch_insns(insnbuf, len, ktva_ktla(ud2a), ud2a+sizeof(ud2a));
+	else if (opfunc == (void *)_paravirt_nop)
 		/* If the operation is a nop, then nop the callsite */
 		ret = paravirt_patch_nop();
 
 	/* identity functions just return their single argument */
-	else if (opfunc == _paravirt_ident_32)
+	else if (opfunc == (void *)_paravirt_ident_32)
 		ret = paravirt_patch_ident_32(insnbuf, len);
-	else if (opfunc == _paravirt_ident_64)
+	else if (opfunc == (void *)_paravirt_ident_64)
 		ret = paravirt_patch_ident_64(insnbuf, len);
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
+	else if (opfunc == (void *)__raw_callee_save__paravirt_ident_64)
+		ret = paravirt_patch_ident_64(insnbuf, len);
+#endif
 
 	else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
 		 type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) ||
@@ -176,7 +183,7 @@ unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
 	if (insn_len > len || start == NULL)
 		insn_len = len;
 	else
-		memcpy(insnbuf, start, insn_len);
+		memcpy(insnbuf, ktla_ktva(start), insn_len);
 
 	return insn_len;
 }
@@ -300,7 +307,7 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
 	return this_cpu_read(paravirt_lazy_mode);
 }
 
-struct pv_info pv_info = {
+struct pv_info pv_info __read_only = {
 	.name = "bare hardware",
 	.paravirt_enabled = 0,
 	.kernel_rpl = 0,
@@ -311,16 +318,16 @@ struct pv_info pv_info = {
 #endif
 };
 
-struct pv_init_ops pv_init_ops = {
+struct pv_init_ops pv_init_ops __read_only = {
 	.patch = native_patch,
 };
 
-struct pv_time_ops pv_time_ops = {
+struct pv_time_ops pv_time_ops __read_only = {
 	.sched_clock = native_sched_clock,
 	.steal_clock = native_steal_clock,
 };
 
-__visible struct pv_irq_ops pv_irq_ops = {
+__visible struct pv_irq_ops pv_irq_ops __read_only = {
 	.save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
 	.restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
 	.irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
@@ -332,7 +339,7 @@ __visible struct pv_irq_ops pv_irq_ops = {
 #endif
 };
 
-__visible struct pv_cpu_ops pv_cpu_ops = {
+__visible struct pv_cpu_ops pv_cpu_ops __read_only = {
 	.cpuid = native_cpuid,
 	.get_debugreg = native_get_debugreg,
 	.set_debugreg = native_set_debugreg,
@@ -395,21 +402,26 @@ NOKPROBE_SYMBOL(native_get_debugreg);
 NOKPROBE_SYMBOL(native_set_debugreg);
 NOKPROBE_SYMBOL(native_load_idt);
 
-struct pv_apic_ops pv_apic_ops = {
+struct pv_apic_ops pv_apic_ops __read_only= {
 #ifdef CONFIG_X86_LOCAL_APIC
 	.startup_ipi_hook = paravirt_nop,
 #endif
 };
 
-#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
+#ifdef CONFIG_X86_32
+#ifdef CONFIG_X86_PAE
+/* 64-bit pagetable entries */
+#define PTE_IDENT	PV_CALLEE_SAVE(_paravirt_ident_64)
+#else
 /* 32-bit pagetable entries */
 #define PTE_IDENT	__PV_IS_CALLEE_SAVE(_paravirt_ident_32)
+#endif
 #else
 /* 64-bit pagetable entries */
 #define PTE_IDENT	__PV_IS_CALLEE_SAVE(_paravirt_ident_64)
 #endif
 
-struct pv_mmu_ops pv_mmu_ops = {
+struct pv_mmu_ops pv_mmu_ops __read_only = {
 
 	.read_cr2 = native_read_cr2,
 	.write_cr2 = native_write_cr2,
@@ -459,6 +471,7 @@ struct pv_mmu_ops pv_mmu_ops = {
 	.make_pud = PTE_IDENT,
 
 	.set_pgd = native_set_pgd,
+	.set_pgd_batched = native_set_pgd_batched,
 #endif
 #endif /* PAGETABLE_LEVELS >= 3 */
 
@@ -479,6 +492,12 @@ struct pv_mmu_ops pv_mmu_ops = {
 	},
 
 	.set_fixmap = native_set_fixmap,
+
+#ifdef CONFIG_PAX_KERNEXEC
+	.pax_open_kernel = native_pax_open_kernel,
+	.pax_close_kernel = native_pax_close_kernel,
+#endif
+
 };
 
 EXPORT_SYMBOL_GPL(pv_time_ops);
diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 0497f71..7186c0d 100644
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1347,7 +1347,7 @@ static void __init get_tce_space_from_tar(void)
 			tce_space = be64_to_cpu(readq(target));
 			tce_space = tce_space & TAR_SW_BITS;
 
-			tce_space = tce_space & (~specified_table_size);
+			tce_space = tce_space & (~(unsigned long)specified_table_size);
 			info->tce_space = (u64 *)__va(tce_space);
 		}
 	}
diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c
index 35ccf75..7a15747 100644
--- a/arch/x86/kernel/pci-iommu_table.c
+++ b/arch/x86/kernel/pci-iommu_table.c
@@ -2,7 +2,7 @@
 #include <asm/iommu_table.h>
 #include <linux/string.h>
 #include <linux/kallsyms.h>
-
+#include <linux/sched.h>
 
 #define DEBUG 1
 
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index 77dd0ad..9ec4723 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -33,7 +33,7 @@ void x86_swiotlb_free_coherent(struct device *dev, size_t size,
 				      struct dma_attrs *attrs)
 {
 	if (is_swiotlb_buffer(dma_to_phys(dev, dma_addr)))
-		swiotlb_free_coherent(dev, size, vaddr, dma_addr);
+		swiotlb_free_coherent(dev, size, vaddr, dma_addr, attrs);
 	else
 		dma_generic_free_coherent(dev, size, vaddr, dma_addr, attrs);
 }
diff --git a/arch/x86/kernel/preempt.S b/arch/x86/kernel/preempt.S
index ca7f0d5..8996469 100644
--- a/arch/x86/kernel/preempt.S
+++ b/arch/x86/kernel/preempt.S
@@ -3,12 +3,14 @@
 #include <asm/dwarf2.h>
 #include <asm/asm.h>
 #include <asm/calling.h>
+#include <asm/alternative-asm.h>
 
 ENTRY(___preempt_schedule)
 	CFI_STARTPROC
 	SAVE_ALL
 	call preempt_schedule
 	RESTORE_ALL
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 
@@ -19,6 +21,7 @@ ENTRY(___preempt_schedule_context)
 	SAVE_ALL
 	call preempt_schedule_context
 	RESTORE_ALL
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 4505e2a..ae28b0d 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -36,7 +36,8 @@
  * section. Since TSS's are completely CPU-local, we want them
  * on exact cacheline boundaries, to eliminate cacheline ping-pong.
  */
-__visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;
+struct tss_struct init_tss[NR_CPUS] __visible ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS };
+EXPORT_SYMBOL(init_tss);
 
 #ifdef CONFIG_X86_64
 static DEFINE_PER_CPU(unsigned char, is_idle);
@@ -92,7 +93,7 @@ void arch_task_cache_init(void)
         task_xstate_cachep =
         	kmem_cache_create("task_xstate", xstate_size,
 				  __alignof__(union thread_xstate),
-				  SLAB_PANIC | SLAB_NOTRACK, NULL);
+				  SLAB_PANIC | SLAB_NOTRACK | SLAB_USERCOPY, NULL);
 }
 
 /*
@@ -105,7 +106,7 @@ void exit_thread(void)
 	unsigned long *bp = t->io_bitmap_ptr;
 
 	if (bp) {
-		struct tss_struct *tss = &per_cpu(init_tss, get_cpu());
+		struct tss_struct *tss = init_tss + get_cpu();
 
 		t->io_bitmap_ptr = NULL;
 		clear_thread_flag(TIF_IO_BITMAP);
@@ -125,6 +126,9 @@ void flush_thread(void)
 {
 	struct task_struct *tsk = current;
 
+#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF)
+	loadsegment(gs, 0);
+#endif
 	flush_ptrace_hw_breakpoint(tsk);
 	memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
 	drop_init_fpu(tsk);
@@ -271,7 +275,7 @@ static void __exit_idle(void)
 void exit_idle(void)
 {
 	/* idle loop has pid 0 */
-	if (current->pid)
+	if (task_pid_nr(current))
 		return;
 	__exit_idle();
 }
@@ -324,7 +328,7 @@ bool xen_set_default_idle(void)
 	return ret;
 }
 #endif
-void stop_this_cpu(void *dummy)
+__noreturn void stop_this_cpu(void *dummy)
 {
 	local_irq_disable();
 	/*
@@ -453,16 +457,37 @@ static int __init idle_setup(char *str)
 }
 early_param("idle", idle_setup);
 
-unsigned long arch_align_stack(unsigned long sp)
+#ifdef CONFIG_PAX_RANDKSTACK
+void pax_randomize_kstack(struct pt_regs *regs)
 {
-	if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
-		sp -= get_random_int() % 8192;
-	return sp & ~0xf;
-}
+	struct thread_struct *thread = &current->thread;
+	unsigned long time;
 
-unsigned long arch_randomize_brk(struct mm_struct *mm)
-{
-	unsigned long range_end = mm->brk + 0x02000000;
-	return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
-}
+	if (!randomize_va_space)
+		return;
+
+	if (v8086_mode(regs))
+		return;
 
+	rdtscl(time);
+
+	/* P4 seems to return a 0 LSB, ignore it */
+#ifdef CONFIG_MPENTIUM4
+	time &= 0x3EUL;
+	time <<= 2;
+#elif defined(CONFIG_X86_64)
+	time &= 0xFUL;
+	time <<= 4;
+#else
+	time &= 0x1FUL;
+	time <<= 3;
+#endif
+
+	thread->sp0 ^= time;
+	load_sp0(init_tss + smp_processor_id(), thread);
+
+#ifdef CONFIG_X86_64
+	this_cpu_write(kernel_stack, thread->sp0);
+#endif
+}
+#endif
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 7bc86bb..0ea06e8 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -64,6 +64,7 @@ asmlinkage void ret_from_kernel_thread(void) __asm__("ret_from_kernel_thread");
 unsigned long thread_saved_pc(struct task_struct *tsk)
 {
 	return ((unsigned long *)tsk->thread.sp)[3];
+//XXX	return tsk->thread.eip;
 }
 
 void __show_regs(struct pt_regs *regs, int all)
@@ -73,19 +74,18 @@ void __show_regs(struct pt_regs *regs, int all)
 	unsigned long sp;
 	unsigned short ss, gs;
 
-	if (user_mode_vm(regs)) {
+	if (user_mode(regs)) {
 		sp = regs->sp;
 		ss = regs->ss & 0xffff;
-		gs = get_user_gs(regs);
 	} else {
 		sp = kernel_stack_pointer(regs);
 		savesegment(ss, ss);
-		savesegment(gs, gs);
 	}
+	gs = get_user_gs(regs);
 
 	printk(KERN_DEFAULT "EIP: %04x:[<%08lx>] EFLAGS: %08lx CPU: %d\n",
 			(u16)regs->cs, regs->ip, regs->flags,
-			smp_processor_id());
+			raw_smp_processor_id());
 	print_symbol("EIP is at %s\n", regs->ip);
 
 	printk(KERN_DEFAULT "EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
@@ -132,20 +132,21 @@ void release_thread(struct task_struct *dead_task)
 int copy_thread(unsigned long clone_flags, unsigned long sp,
 	unsigned long arg, struct task_struct *p)
 {
-	struct pt_regs *childregs = task_pt_regs(p);
+	struct pt_regs *childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8;
 	struct task_struct *tsk;
 	int err;
 
 	p->thread.sp = (unsigned long) childregs;
 	p->thread.sp0 = (unsigned long) (childregs+1);
+	p->tinfo.lowest_stack = (unsigned long)task_stack_page(p);
 
 	if (unlikely(p->flags & PF_KTHREAD)) {
 		/* kernel thread */
 		memset(childregs, 0, sizeof(struct pt_regs));
 		p->thread.ip = (unsigned long) ret_from_kernel_thread;
-		task_user_gs(p) = __KERNEL_STACK_CANARY;
-		childregs->ds = __USER_DS;
-		childregs->es = __USER_DS;
+		savesegment(gs, childregs->gs);
+		childregs->ds = __KERNEL_DS;
+		childregs->es = __KERNEL_DS;
 		childregs->fs = __KERNEL_PERCPU;
 		childregs->bx = sp;	/* function */
 		childregs->bp = arg;
@@ -252,7 +253,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	struct thread_struct *prev = &prev_p->thread,
 				 *next = &next_p->thread;
 	int cpu = smp_processor_id();
-	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	struct tss_struct *tss = init_tss + cpu;
 	fpu_switch_t fpu;
 
 	/* never put a printk in __switch_to... printk() calls wake_up*() indirectly */
@@ -276,6 +277,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	 */
 	lazy_save_gs(prev->gs);
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(task_thread_info(next_p)->addr_limit);
+#endif
+
 	/*
 	 * Load the per-thread Thread-Local Storage descriptor.
 	 */
@@ -314,9 +319,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	 */
 	arch_end_context_switch(next_p);
 
-	this_cpu_write(kernel_stack,
-		  (unsigned long)task_stack_page(next_p) +
-		  THREAD_SIZE - KERNEL_STACK_OFFSET);
+	this_cpu_write(current_task, next_p);
+	this_cpu_write(current_tinfo, &next_p->tinfo);
+	this_cpu_write(kernel_stack, next->sp0);
 
 	/*
 	 * Restore %gs if needed (which is common)
@@ -326,8 +331,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 
 	switch_fpu_finish(next_p, fpu);
 
-	this_cpu_write(current_task, next_p);
-
 	return prev_p;
 }
 
@@ -357,4 +360,3 @@ unsigned long get_wchan(struct task_struct *p)
 	} while (count++ < 16);
 	return 0;
 }
-
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index ca5b02d..c0b2f6a 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -158,10 +158,11 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 	struct pt_regs *childregs;
 	struct task_struct *me = current;
 
-	p->thread.sp0 = (unsigned long)task_stack_page(p) + THREAD_SIZE;
+	p->thread.sp0 = (unsigned long)task_stack_page(p) + THREAD_SIZE - 16;
 	childregs = task_pt_regs(p);
 	p->thread.sp = (unsigned long) childregs;
 	p->thread.usersp = me->thread.usersp;
+	p->tinfo.lowest_stack = (unsigned long)task_stack_page(p);
 	set_tsk_thread_flag(p, TIF_FORK);
 	p->thread.fpu_counter = 0;
 	p->thread.io_bitmap_ptr = NULL;
@@ -172,6 +173,8 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
 	p->thread.fs = p->thread.fsindex ? 0 : me->thread.fs;
 	savesegment(es, p->thread.es);
 	savesegment(ds, p->thread.ds);
+	savesegment(ss, p->thread.ss);
+	BUG_ON(p->thread.ss == __UDEREF_KERNEL_DS);
 	memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
 
 	if (unlikely(p->flags & PF_KTHREAD)) {
@@ -280,7 +283,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	struct thread_struct *prev = &prev_p->thread;
 	struct thread_struct *next = &next_p->thread;
 	int cpu = smp_processor_id();
-	struct tss_struct *tss = &per_cpu(init_tss, cpu);
+	struct tss_struct *tss = init_tss + cpu;
 	unsigned fsindex, gsindex;
 	fpu_switch_t fpu;
 
@@ -303,6 +306,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	if (unlikely(next->ds | prev->ds))
 		loadsegment(ds, next->ds);
 
+	savesegment(ss, prev->ss);
+	if (unlikely(next->ss != prev->ss))
+		loadsegment(ss, next->ss);
 
 	/* We must save %fs and %gs before load_TLS() because
 	 * %fs and %gs may be cleared by load_TLS().
@@ -362,6 +368,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	prev->usersp = this_cpu_read(old_rsp);
 	this_cpu_write(old_rsp, next->usersp);
 	this_cpu_write(current_task, next_p);
+	this_cpu_write(current_tinfo, &next_p->tinfo);
 
 	/*
 	 * If it were not for PREEMPT_ACTIVE we could guarantee that the
@@ -371,9 +378,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
 	task_thread_info(prev_p)->saved_preempt_count = this_cpu_read(__preempt_count);
 	this_cpu_write(__preempt_count, task_thread_info(next_p)->saved_preempt_count);
 
-	this_cpu_write(kernel_stack,
-		  (unsigned long)task_stack_page(next_p) +
-		  THREAD_SIZE - KERNEL_STACK_OFFSET);
+	this_cpu_write(kernel_stack, next->sp0);
 
 	/*
 	 * Now maybe reload the debug registers and handle I/O bitmaps
@@ -443,12 +448,11 @@ unsigned long get_wchan(struct task_struct *p)
 	if (!p || p == current || p->state == TASK_RUNNING)
 		return 0;
 	stack = (unsigned long)task_stack_page(p);
-	if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
+	if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-16-sizeof(u64))
 		return 0;
 	fp = *(u64 *)(p->thread.sp);
 	do {
-		if (fp < (unsigned long)stack ||
-		    fp >= (unsigned long)stack+THREAD_SIZE)
+		if (fp < stack || fp > stack+THREAD_SIZE-16-sizeof(u64))
 			return 0;
 		ip = *(u64 *)(fp+8);
 		if (!in_sched_functions(ip))
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 678c0ad..2fc2a7b 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -186,10 +186,10 @@ unsigned long kernel_stack_pointer(struct pt_regs *regs)
 	unsigned long sp = (unsigned long)&regs->sp;
 	u32 *prev_esp;
 
-	if (context == (sp & ~(THREAD_SIZE - 1)))
+	if (context == ((sp + 8) & ~(THREAD_SIZE - 1)))
 		return sp;
 
-	prev_esp = (u32 *)(context);
+	prev_esp = *(u32 **)(context);
 	if (prev_esp)
 		return (unsigned long)prev_esp;
 
@@ -452,6 +452,20 @@ static int putreg(struct task_struct *child,
 		if (child->thread.gs != value)
 			return do_arch_prctl(child, ARCH_SET_GS, value);
 		return 0;
+
+	case offsetof(struct user_regs_struct,ip):
+		/*
+		 * Protect against any attempt to set ip to an
+		 * impossible address.  There are dragons lurking if the
+		 * address is noncanonical.  (This explicitly allows
+		 * setting ip to TASK_SIZE_MAX, because user code can do
+		 * that all by itself by running off the end of its
+		 * address space.
+		 */
+		if (value > TASK_SIZE_MAX)
+			return -EIO;
+		break;
+
 #endif
 	}
 
@@ -588,7 +602,7 @@ static void ptrace_triggered(struct perf_event *bp,
 static unsigned long ptrace_get_dr7(struct perf_event *bp[])
 {
 	int i;
-	int dr7 = 0;
+	unsigned long dr7 = 0;
 	struct arch_hw_breakpoint *info;
 
 	for (i = 0; i < HBP_NUM; i++) {
@@ -822,7 +836,7 @@ long arch_ptrace(struct task_struct *child, long request,
 		 unsigned long addr, unsigned long data)
 {
 	int ret;
-	unsigned long __user *datap = (unsigned long __user *)data;
+	unsigned long __user *datap = (__force unsigned long __user *)data;
 
 	switch (request) {
 	/* read the word at location addr in the USER area. */
@@ -907,14 +921,14 @@ long arch_ptrace(struct task_struct *child, long request,
 		if ((int) addr < 0)
 			return -EIO;
 		ret = do_get_thread_area(child, addr,
-					(struct user_desc __user *)data);
+					(__force struct user_desc __user *) data);
 		break;
 
 	case PTRACE_SET_THREAD_AREA:
 		if ((int) addr < 0)
 			return -EIO;
 		ret = do_set_thread_area(child, addr,
-					(struct user_desc __user *)data, 0);
+					(__force struct user_desc __user *) data, 0);
 		break;
 #endif
 
@@ -1292,7 +1306,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 
 #ifdef CONFIG_X86_64
 
-static struct user_regset x86_64_regsets[] __read_mostly = {
+static user_regset_no_const x86_64_regsets[] __read_only = {
 	[REGSET_GENERAL] = {
 		.core_note_type = NT_PRSTATUS,
 		.n = sizeof(struct user_regs_struct) / sizeof(long),
@@ -1333,7 +1347,7 @@ static const struct user_regset_view user_x86_64_view = {
 #endif	/* CONFIG_X86_64 */
 
 #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
-static struct user_regset x86_32_regsets[] __read_mostly = {
+static user_regset_no_const x86_32_regsets[] __read_only = {
 	[REGSET_GENERAL] = {
 		.core_note_type = NT_PRSTATUS,
 		.n = sizeof(struct user_regs_struct32) / sizeof(u32),
@@ -1386,7 +1400,7 @@ static const struct user_regset_view user_x86_32_view = {
  */
 u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
 
-void update_regset_xstate_info(unsigned int size, u64 xstate_mask)
+void __init update_regset_xstate_info(unsigned int size, u64 xstate_mask)
 {
 #ifdef CONFIG_X86_64
 	x86_64_regsets[REGSET_XSTATE].n = size / sizeof(u64);
@@ -1421,7 +1435,7 @@ static void fill_sigtrap_info(struct task_struct *tsk,
 	memset(info, 0, sizeof(*info));
 	info->si_signo = SIGTRAP;
 	info->si_code = si_code;
-	info->si_addr = user_mode_vm(regs) ? (void __user *)regs->ip : NULL;
+	info->si_addr = user_mode(regs) ? (__force void __user *)regs->ip : NULL;
 }
 
 void user_single_step_siginfo(struct task_struct *tsk,
@@ -1450,6 +1464,10 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
 # define IS_IA32	0
 #endif
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern void gr_delayed_cred_worker(void);
+#endif
+
 /*
  * We must return the syscall number to actually look up in the table.
  * This can be -1L to skip running any syscall at all.
@@ -1460,6 +1478,11 @@ long syscall_trace_enter(struct pt_regs *regs)
 
 	user_exit();
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	/*
 	 * If we stepped into a sysenter/syscall insn, it trapped in
 	 * kernel mode; do_debug() cleared TF and set TIF_SINGLESTEP.
@@ -1515,6 +1538,11 @@ void syscall_trace_leave(struct pt_regs *regs)
 	 */
 	user_exit();
 
+#ifdef CONFIG_GRKERNSEC_SETXID
+	if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
+		gr_delayed_cred_worker();
+#endif
+
 	audit_syscall_exit(regs);
 
 	if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c
index 2f355d2..e75ed0a 100644
--- a/arch/x86/kernel/pvclock.c
+++ b/arch/x86/kernel/pvclock.c
@@ -51,11 +51,11 @@ void pvclock_touch_watchdogs(void)
 	reset_hung_task_detector();
 }
 
-static atomic64_t last_value = ATOMIC64_INIT(0);
+static atomic64_unchecked_t last_value = ATOMIC64_INIT(0);
 
 void pvclock_resume(void)
 {
-	atomic64_set(&last_value, 0);
+	atomic64_set_unchecked(&last_value, 0);
 }
 
 u8 pvclock_read_flags(struct pvclock_vcpu_time_info *src)
@@ -105,11 +105,11 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
 	 * updating at the same time, and one of them could be slightly behind,
 	 * making the assumption that last_value always go forward fail to hold.
 	 */
-	last = atomic64_read(&last_value);
+	last = atomic64_read_unchecked(&last_value);
 	do {
 		if (ret < last)
 			return last;
-		last = atomic64_cmpxchg(&last_value, last, ret);
+		last = atomic64_cmpxchg_unchecked(&last_value, last, ret);
 	} while (unlikely(last != ret));
 
 	return ret;
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index 52b1157..c6e67c4 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -68,6 +68,11 @@ static int __init set_bios_reboot(const struct dmi_system_id *d)
 
 void __noreturn machine_real_restart(unsigned int type)
 {
+
+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
+	struct desc_struct *gdt;
+#endif
+
 	local_irq_disable();
 
 	/*
@@ -95,7 +100,29 @@ void __noreturn machine_real_restart(unsigned int type)
 
 	/* Jump to the identity-mapped low memory code */
 #ifdef CONFIG_X86_32
-	asm volatile("jmpl *%0" : :
+
+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
+	gdt = get_cpu_gdt_table(smp_processor_id());
+	pax_open_kernel();
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	gdt[GDT_ENTRY_KERNEL_DS].type = 3;
+	gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf;
+	loadsegment(ds, __KERNEL_DS);
+	loadsegment(es, __KERNEL_DS);
+	loadsegment(ss, __KERNEL_DS);
+#endif
+#ifdef CONFIG_PAX_KERNEXEC
+	gdt[GDT_ENTRY_KERNEL_CS].base0 = 0;
+	gdt[GDT_ENTRY_KERNEL_CS].base1 = 0;
+	gdt[GDT_ENTRY_KERNEL_CS].base2 = 0;
+	gdt[GDT_ENTRY_KERNEL_CS].limit0 = 0xffff;
+	gdt[GDT_ENTRY_KERNEL_CS].limit = 0xf;
+	gdt[GDT_ENTRY_KERNEL_CS].g = 1;
+#endif
+	pax_close_kernel();
+#endif
+
+	asm volatile("ljmpl *%0" : :
 		     "rm" (real_mode_header->machine_real_restart_asm),
 		     "a" (type));
 #else
@@ -486,7 +513,7 @@ void __attribute__((weak)) mach_reboot_fixups(void)
  * This means that this function can never return, it can misbehave
  * by not rebooting properly and hanging.
  */
-static void native_machine_emergency_restart(void)
+static void __noreturn native_machine_emergency_restart(void)
 {
 	int i;
 	int attempt = 0;
@@ -610,13 +637,13 @@ void native_machine_shutdown(void)
 #endif
 }
 
-static void __machine_emergency_restart(int emergency)
+static void __noreturn __machine_emergency_restart(int emergency)
 {
 	reboot_emergency = emergency;
 	machine_ops.emergency_restart();
 }
 
-static void native_machine_restart(char *__unused)
+static void __noreturn native_machine_restart(char *__unused)
 {
 	pr_notice("machine restart\n");
 
@@ -625,7 +652,7 @@ static void native_machine_restart(char *__unused)
 	__machine_emergency_restart(0);
 }
 
-static void native_machine_halt(void)
+static void __noreturn native_machine_halt(void)
 {
 	/* Stop other cpus and apics */
 	machine_shutdown();
@@ -635,7 +662,7 @@ static void native_machine_halt(void)
 	stop_this_cpu(NULL);
 }
 
-static void native_machine_power_off(void)
+static void __noreturn native_machine_power_off(void)
 {
 	if (pm_power_off) {
 		if (!reboot_force)
@@ -644,9 +671,10 @@ static void native_machine_power_off(void)
 	}
 	/* A fallback in case there is no PM info available */
 	tboot_shutdown(TB_SHUTDOWN_HALT);
+	unreachable();
 }
 
-struct machine_ops machine_ops = {
+struct machine_ops machine_ops __read_only = {
 	.power_off = native_machine_power_off,
 	.shutdown = native_machine_shutdown,
 	.emergency_restart = native_machine_emergency_restart,
diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
index c8e41e9..64049ef 100644
--- a/arch/x86/kernel/reboot_fixups_32.c
+++ b/arch/x86/kernel/reboot_fixups_32.c
@@ -57,7 +57,7 @@ struct device_fixup {
 	unsigned int vendor;
 	unsigned int device;
 	void (*reboot_fixup)(struct pci_dev *);
-};
+} __do_const;
 
 /*
  * PCI ids solely used for fixups_table go here
diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S
index 3fd2c69..a444264 100644
--- a/arch/x86/kernel/relocate_kernel_64.S
+++ b/arch/x86/kernel/relocate_kernel_64.S
@@ -96,8 +96,7 @@ relocate_kernel:
 
 	/* jump to identity mapped page */
 	addq	$(identity_mapped - relocate_kernel), %r8
-	pushq	%r8
-	ret
+	jmp	*%r8
 
 identity_mapped:
 	/* set return address to 0 if not preserving context */
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 78a0e62..5c2e510 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -110,6 +110,7 @@
 #include <asm/mce.h>
 #include <asm/alternative.h>
 #include <asm/prom.h>
+#include <asm/boot.h>
 
 /*
  * max_low_pfn_mapped: highest direct mapped pfn under 4GB
@@ -205,12 +206,50 @@ EXPORT_SYMBOL(boot_cpu_data);
 #endif
 
 
-#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
-__visible unsigned long mmu_cr4_features;
+#ifdef CONFIG_X86_64
+__visible unsigned long mmu_cr4_features __read_only = X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE;
+#elif defined(CONFIG_X86_PAE)
+__visible unsigned long mmu_cr4_features __read_only = X86_CR4_PAE;
 #else
-__visible unsigned long mmu_cr4_features = X86_CR4_PAE;
+__visible unsigned long mmu_cr4_features __read_only;
 #endif
 
+void set_in_cr4(unsigned long mask)
+{
+	unsigned long cr4 = read_cr4();
+
+	if ((cr4 & mask) == mask && cr4 == mmu_cr4_features)
+		return;
+
+	pax_open_kernel();
+	mmu_cr4_features |= mask;
+	pax_close_kernel();
+
+	if (trampoline_cr4_features)
+		*trampoline_cr4_features = mmu_cr4_features;
+	cr4 |= mask;
+	write_cr4(cr4);
+}
+EXPORT_SYMBOL(set_in_cr4);
+
+void clear_in_cr4(unsigned long mask)
+{
+	unsigned long cr4 = read_cr4();
+
+	if (!(cr4 & mask) && cr4 == mmu_cr4_features)
+		return;
+
+	pax_open_kernel();
+	mmu_cr4_features &= ~mask;
+	pax_close_kernel();
+
+	if (trampoline_cr4_features)
+		*trampoline_cr4_features = mmu_cr4_features;
+	cr4 &= ~mask;
+	write_cr4(cr4);
+}
+EXPORT_SYMBOL(clear_in_cr4);
+
 /* Boot loader ID and version as integers, for the benefit of proc_dointvec */
 int bootloader_type, bootloader_version;
 
@@ -772,7 +811,7 @@ static void __init trim_bios_range(void)
 	 * area (640->1Mb) as ram even though it is not.
 	 * take them out.
 	 */
-	e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
+	e820_remove_range(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_RAM, 1);
 
 	sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
 }
@@ -780,7 +819,7 @@ static void __init trim_bios_range(void)
 /* called before trim_bios_range() to spare extra sanitize */
 static void __init e820_add_kernel_range(void)
 {
-	u64 start = __pa_symbol(_text);
+	u64 start = __pa_symbol(ktla_ktva(_text));
 	u64 size = __pa_symbol(_end) - start;
 
 	/*
@@ -856,8 +895,12 @@ dump_kernel_offset(struct notifier_block *self, unsigned long v, void *p)
 
 void __init setup_arch(char **cmdline_p)
 {
+#ifdef CONFIG_X86_32
+	memblock_reserve(LOAD_PHYSICAL_ADDR, __pa_symbol(__bss_stop) - LOAD_PHYSICAL_ADDR);
+#else
 	memblock_reserve(__pa_symbol(_text),
 			 (unsigned long)__bss_stop - (unsigned long)_text);
+#endif
 
 	early_reserve_initrd();
 
@@ -946,14 +989,14 @@ void __init setup_arch(char **cmdline_p)
 
 	if (!boot_params.hdr.root_flags)
 		root_mountflags &= ~MS_RDONLY;
-	init_mm.start_code = (unsigned long) _text;
-	init_mm.end_code = (unsigned long) _etext;
+	init_mm.start_code = ktla_ktva((unsigned long) _text);
+	init_mm.end_code = ktla_ktva((unsigned long) _etext);
 	init_mm.end_data = (unsigned long) _edata;
 	init_mm.brk = _brk_end;
 
-	code_resource.start = __pa_symbol(_text);
-	code_resource.end = __pa_symbol(_etext)-1;
-	data_resource.start = __pa_symbol(_etext);
+	code_resource.start = __pa_symbol(ktla_ktva(_text));
+	code_resource.end = __pa_symbol(ktla_ktva(_etext))-1;
+	data_resource.start = __pa_symbol(_sdata);
 	data_resource.end = __pa_symbol(_edata)-1;
 	bss_resource.start = __pa_symbol(__bss_start);
 	bss_resource.end = __pa_symbol(__bss_stop)-1;
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index 5cdff03..80fa283 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -21,19 +21,17 @@
 #include <asm/cpu.h>
 #include <asm/stackprotector.h>
 
-DEFINE_PER_CPU_READ_MOSTLY(int, cpu_number);
+#ifdef CONFIG_SMP
+DEFINE_PER_CPU_READ_MOSTLY(unsigned int, cpu_number);
 EXPORT_PER_CPU_SYMBOL(cpu_number);
+#endif
 
-#ifdef CONFIG_X86_64
 #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load)
-#else
-#define BOOT_PERCPU_OFFSET 0
-#endif
 
 DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
 EXPORT_PER_CPU_SYMBOL(this_cpu_off);
 
-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
+unsigned long __per_cpu_offset[NR_CPUS] __read_only = {
 	[0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET,
 };
 EXPORT_SYMBOL(__per_cpu_offset);
@@ -66,7 +64,7 @@ static bool __init pcpu_need_numa(void)
 {
 #ifdef CONFIG_NEED_MULTIPLE_NODES
 	pg_data_t *last = NULL;
-	unsigned int cpu;
+	int cpu;
 
 	for_each_possible_cpu(cpu) {
 		int node = early_cpu_to_node(cpu);
@@ -155,10 +153,10 @@ static inline void setup_percpu_segment(int cpu)
 {
 #ifdef CONFIG_X86_32
 	struct desc_struct gdt;
+	unsigned long base = per_cpu_offset(cpu);
 
-	pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF,
-			0x2 | DESCTYPE_S, 0x8);
-	gdt.s = 1;
+	pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT,
+			0x83 | DESCTYPE_S, 0xC);
 	write_gdt_entry(get_cpu_gdt_table(cpu),
 			GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S);
 #endif
@@ -219,6 +217,11 @@ void __init setup_per_cpu_areas(void)
 	/* alrighty, percpu areas up and running */
 	delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start;
 	for_each_possible_cpu(cpu) {
+#ifdef CONFIG_CC_STACKPROTECTOR
+#ifdef CONFIG_X86_32
+		unsigned long canary = per_cpu(stack_canary.canary, cpu);
+#endif
+#endif
 		per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu];
 		per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu);
 		per_cpu(cpu_number, cpu) = cpu;
@@ -259,6 +262,12 @@ void __init setup_per_cpu_areas(void)
 		 */
 		set_cpu_numa_node(cpu, early_cpu_to_node(cpu));
 #endif
+#ifdef CONFIG_CC_STACKPROTECTOR
+#ifdef CONFIG_X86_32
+		if (!cpu)
+			per_cpu(stack_canary.canary, cpu) = canary;
+#endif
+#endif
 		/*
 		 * Up to this point, the boot CPU has been using .init.data
 		 * area.  Reload any changed state for the boot CPU.
diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
index 2851d63..83bf567 100644
--- a/arch/x86/kernel/signal.c
+++ b/arch/x86/kernel/signal.c
@@ -190,7 +190,7 @@ static unsigned long align_sigframe(unsigned long sp)
 	 * Align the stack pointer according to the i386 ABI,
 	 * i.e. so that on function entry ((sp + 4) & 15) == 0.
 	 */
-	sp = ((sp + 4) & -16ul) - 4;
+	sp = ((sp - 12) & -16ul) - 4;
 #else /* !CONFIG_X86_32 */
 	sp = round_down(sp, 16) - 8;
 #endif
@@ -298,10 +298,9 @@ __setup_frame(int sig, struct ksignal *ksig, sigset_t *set,
 	}
 
 	if (current->mm->context.vdso)
-		restorer = current->mm->context.vdso +
-			selected_vdso32->sym___kernel_sigreturn;
+		restorer = (void __force_user *)(current->mm->context.vdso + selected_vdso32->sym___kernel_sigreturn);
 	else
-		restorer = &frame->retcode;
+		restorer = (void __user *)&frame->retcode;
 	if (ksig->ka.sa.sa_flags & SA_RESTORER)
 		restorer = ksig->ka.sa.sa_restorer;
 
@@ -315,7 +314,7 @@ __setup_frame(int sig, struct ksignal *ksig, sigset_t *set,
 	 * reasons and because gdb uses it as a signature to notice
 	 * signal handler stack frames.
 	 */
-	err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode);
+	err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode);
 
 	if (err)
 		return -EFAULT;
@@ -362,8 +361,10 @@ static int __setup_rt_frame(int sig, struct ksignal *ksig,
 		save_altstack_ex(&frame->uc.uc_stack, regs->sp);
 
 		/* Set up to return from userspace.  */
-		restorer = current->mm->context.vdso +
-			selected_vdso32->sym___kernel_rt_sigreturn;
+		if (current->mm->context.vdso)
+			restorer = (void __force_user *)(current->mm->context.vdso + selected_vdso32->sym___kernel_rt_sigreturn);
+		else
+			restorer = (void __user *)&frame->retcode;
 		if (ksig->ka.sa.sa_flags & SA_RESTORER)
 			restorer = ksig->ka.sa.sa_restorer;
 		put_user_ex(restorer, &frame->pretcode);
@@ -375,7 +376,7 @@ static int __setup_rt_frame(int sig, struct ksignal *ksig,
 		 * reasons and because gdb uses it as a signature to notice
 		 * signal handler stack frames.
 		 */
-		put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode);
+		put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode);
 	} put_user_catch(err);
 	
 	err |= copy_siginfo_to_user(&frame->info, &ksig->info);
@@ -611,7 +612,12 @@ setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs)
 {
 	int usig = signr_convert(ksig->sig);
 	sigset_t *set = sigmask_to_save();
-	compat_sigset_t *cset = (compat_sigset_t *) set;
+	sigset_t sigcopy;
+	compat_sigset_t *cset;
+
+	sigcopy = *set;
+
+	cset = (compat_sigset_t *) &sigcopy;
 
 	/* Set up the stack frame */
 	if (is_ia32_frame()) {
@@ -622,7 +628,7 @@ setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs)
 	} else if (is_x32_frame()) {
 		return x32_setup_rt_frame(ksig, cset, regs);
 	} else {
-		return __setup_rt_frame(ksig->sig, ksig, set, regs);
+		return __setup_rt_frame(ksig->sig, ksig, &sigcopy, regs);
 	}
 }
 
diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index be8e1bd..a3d93fa 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -341,7 +341,7 @@ static int __init nonmi_ipi_setup(char *str)
 
 __setup("nonmi_ipi", nonmi_ipi_setup);
 
-struct smp_ops smp_ops = {
+struct smp_ops smp_ops __read_only = {
 	.smp_prepare_boot_cpu	= native_smp_prepare_boot_cpu,
 	.smp_prepare_cpus	= native_smp_prepare_cpus,
 	.smp_cpus_done		= native_smp_cpus_done,
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index 5492798..a3bd4f2 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -230,14 +230,17 @@ static void notrace start_secondary(void *unused)
 
 	enable_start_cpu0 = 0;
 
-#ifdef CONFIG_X86_32
+	/* otherwise gcc will move up smp_processor_id before the cpu_init */
+	barrier();
+
 	/* switch away from the initial page table */
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	load_cr3(get_cpu_pgd(smp_processor_id(), kernel));
+#else
 	load_cr3(swapper_pg_dir);
+#endif
 	__flush_tlb_all();
-#endif
 
-	/* otherwise gcc will move up smp_processor_id before the cpu_init */
-	barrier();
 	/*
 	 * Check TSC synchronization with the BP:
 	 */
@@ -764,8 +767,9 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
 	alternatives_enable_smp();
 
 	idle->thread.sp = (unsigned long) (((struct pt_regs *)
-			  (THREAD_SIZE +  task_stack_page(idle))) - 1);
+			  (THREAD_SIZE - 16 + task_stack_page(idle))) - 1);
 	per_cpu(current_task, cpu) = idle;
+	per_cpu(current_tinfo, cpu) = &idle->tinfo;
 
 #ifdef CONFIG_X86_32
 	/* Stack for startup_32 can be just as for start_secondary onwards */
@@ -774,10 +778,10 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
 	clear_tsk_thread_flag(idle, TIF_FORK);
 	initial_gs = per_cpu_offset(cpu);
 #endif
-	per_cpu(kernel_stack, cpu) =
-		(unsigned long)task_stack_page(idle) -
-		KERNEL_STACK_OFFSET + THREAD_SIZE;
+	per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE;
+	pax_open_kernel();
 	early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
+	pax_close_kernel();
 	initial_code = (unsigned long)start_secondary;
 	stack_start  = idle->thread.sp;
 
@@ -923,6 +927,15 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
 	/* the FPU context is blank, nobody can own it */
 	__cpu_disable_lazy_restore(cpu);
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	clone_pgd_range(get_cpu_pgd(cpu, kernel) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+	clone_pgd_range(get_cpu_pgd(cpu, user) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+#endif
+
 	err = do_boot_cpu(apicid, cpu, tidle);
 	if (err) {
 		pr_err("do_boot_cpu failed(%d) to wakeup CPU#%u\n", err, cpu);
diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c
index 9b4d51d..5d28b58 100644
--- a/arch/x86/kernel/step.c
+++ b/arch/x86/kernel/step.c
@@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
 		struct desc_struct *desc;
 		unsigned long base;
 
-		seg &= ~7UL;
+		seg >>= 3;
 
 		mutex_lock(&child->mm->context.lock);
-		if (unlikely((seg >> 3) >= child->mm->context.size))
+		if (unlikely(seg >= child->mm->context.size))
 			addr = -1L; /* bogus selector, access would fault */
 		else {
 			desc = child->mm->context.ldt + seg;
@@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
 			addr += base;
 		}
 		mutex_unlock(&child->mm->context.lock);
-	}
+	} else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS)
+		addr = ktla_ktva(addr);
 
 	return addr;
 }
@@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct task_struct *child, struct pt_regs *regs)
 	unsigned char opcode[15];
 	unsigned long addr = convert_ip_to_linear(child, regs);
 
+	if (addr == -EINVAL)
+		return 0;
+
 	copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0);
 	for (i = 0; i < copied; i++) {
 		switch (opcode[i]) {
diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c
new file mode 100644
index 0000000..5877189
--- /dev/null
+++ b/arch/x86/kernel/sys_i386_32.c
@@ -0,0 +1,189 @@
+/*
+ * This file contains various random system calls that
+ * have a non-standard calling sequence on the Linux/i386
+ * platform.
+ */
+
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/smp.h>
+#include <linux/sem.h>
+#include <linux/msg.h>
+#include <linux/shm.h>
+#include <linux/stat.h>
+#include <linux/syscalls.h>
+#include <linux/mman.h>
+#include <linux/file.h>
+#include <linux/utsname.h>
+#include <linux/ipc.h>
+#include <linux/elf.h>
+
+#include <linux/uaccess.h>
+#include <linux/unistd.h>
+
+#include <asm/syscalls.h>
+
+int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
+{
+	unsigned long pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (current->mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	if (flags & MAP_FIXED)
+		if (len > pax_task_size || addr > pax_task_size - len)
+			return -EINVAL;
+
+	return 0;
+}
+
+/*
+ * Align a virtual address to avoid aliasing in the I$ on AMD F15h.
+ */
+static unsigned long get_align_mask(void)
+{
+	if (va_align.flags < 0 || !(va_align.flags & ALIGN_VA_32))
+		return 0;
+
+	if (!(current->flags & PF_RANDOMIZE))
+		return 0;
+
+	return va_align.mask;
+}
+
+unsigned long
+arch_get_unmapped_area(struct file *filp, unsigned long addr,
+		unsigned long len, unsigned long pgoff, unsigned long flags)
+{
+	struct mm_struct *mm = current->mm;
+	struct vm_area_struct *vma;
+	unsigned long pax_task_size = TASK_SIZE;
+	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	if (len > pax_task_size)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		if (pax_task_size - len >= addr) {
+			vma = find_vma(mm, addr);
+			if (check_heap_stack_gap(vma, addr, len, offset))
+				return addr;
+		}
+	}
+
+	info.flags = 0;
+	info.length = len;
+	info.align_mask = filp ? get_align_mask() : 0;
+	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE)) {
+		info.low_limit = 0x00110000UL;
+		info.high_limit = mm->start_code;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap & 0x03FFF000UL;
+#endif
+
+		if (info.low_limit < info.high_limit) {
+			addr = vm_unmapped_area(&info);
+			if (!IS_ERR_VALUE(addr))
+				return addr;
+		}
+	} else
+#endif
+
+	info.low_limit = mm->mmap_base;
+	info.high_limit = pax_task_size;
+
+	return vm_unmapped_area(&info);
+}
+
+unsigned long
+arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
+			  const unsigned long len, const unsigned long pgoff,
+			  const unsigned long flags)
+{
+	struct vm_area_struct *vma;
+	struct mm_struct *mm = current->mm;
+	unsigned long addr = addr0, pax_task_size = TASK_SIZE;
+	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	/* requested length too big for entire address space */
+	if (len > pax_task_size)
+		return -ENOMEM;
+
+	if (flags & MAP_FIXED)
+		return addr;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE))
+		goto bottomup;
+#endif
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
+	/* requesting a specific address */
+	if (addr) {
+		addr = PAGE_ALIGN(addr);
+		if (pax_task_size - len >= addr) {
+			vma = find_vma(mm, addr);
+			if (check_heap_stack_gap(vma, addr, len, offset))
+				return addr;
+		}
+	}
+
+	info.flags = VM_UNMAPPED_AREA_TOPDOWN;
+	info.length = len;
+	info.low_limit = PAGE_SIZE;
+	info.high_limit = mm->mmap_base;
+	info.align_mask = filp ? get_align_mask() : 0;
+	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
+
+	addr = vm_unmapped_area(&info);
+	if (!(addr & ~PAGE_MASK))
+		return addr;
+	VM_BUG_ON(addr != -ENOMEM);
+
+bottomup:
+	/*
+	 * A failed mmap() very likely causes application failure,
+	 * so fall back to the bottom-up function here. This scenario
+	 * can happen with large stack limits and large mmap()
+	 * allocations.
+	 */
+	return arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
+}
diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c
index 30277e2..5664a29 100644
--- a/arch/x86/kernel/sys_x86_64.c
+++ b/arch/x86/kernel/sys_x86_64.c
@@ -81,8 +81,8 @@ out:
 	return error;
 }
 
-static void find_start_end(unsigned long flags, unsigned long *begin,
-			   unsigned long *end)
+static void find_start_end(struct mm_struct *mm, unsigned long flags,
+			   unsigned long *begin, unsigned long *end)
 {
 	if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) {
 		unsigned long new_begin;
@@ -101,7 +101,7 @@ static void find_start_end(unsigned long flags, unsigned long *begin,
 				*begin = new_begin;
 		}
 	} else {
-		*begin = current->mm->mmap_legacy_base;
+		*begin = mm->mmap_legacy_base;
 		*end = TASK_SIZE;
 	}
 }
@@ -114,20 +114,24 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	struct vm_area_struct *vma;
 	struct vm_unmapped_area_info info;
 	unsigned long begin, end;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 
 	if (flags & MAP_FIXED)
 		return addr;
 
-	find_start_end(flags, &begin, &end);
+	find_start_end(mm, flags, &begin, &end);
 
 	if (len > end)
 		return -ENOMEM;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
-		if (end - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (end - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -137,6 +141,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	info.high_limit = end;
 	info.align_mask = filp ? get_align_mask() : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 
@@ -149,6 +154,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	struct mm_struct *mm = current->mm;
 	unsigned long addr = addr0;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 
 	/* requested length too big for entire address space */
 	if (len > TASK_SIZE)
@@ -161,12 +167,15 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT))
 		goto bottomup;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* requesting a specific address */
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-				(!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -176,6 +185,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	info.high_limit = mm->mmap_base;
 	info.align_mask = filp ? get_align_mask() : 0;
 	info.align_offset = pgoff << PAGE_SHIFT;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 	if (!(addr & ~PAGE_MASK))
 		return addr;
diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
index 91a4496..bb87552 100644
--- a/arch/x86/kernel/tboot.c
+++ b/arch/x86/kernel/tboot.c
@@ -221,7 +221,7 @@ static int tboot_setup_sleep(void)
 
 void tboot_shutdown(u32 shutdown_type)
 {
-	void (*shutdown)(void);
+	void (* __noreturn shutdown)(void);
 
 	if (!tboot_enabled())
 		return;
@@ -243,7 +243,7 @@ void tboot_shutdown(u32 shutdown_type)
 
 	switch_to_tboot_pt();
 
-	shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry;
+	shutdown = (void *)(unsigned long)tboot->shutdown_entry;
 	shutdown();
 
 	/* should not reach here */
@@ -310,7 +310,7 @@ static int tboot_extended_sleep(u8 sleep_state, u32 val_a, u32 val_b)
 	return -ENODEV;
 }
 
-static atomic_t ap_wfs_count;
+static atomic_unchecked_t ap_wfs_count;
 
 static int tboot_wait_for_aps(int num_aps)
 {
@@ -334,9 +334,9 @@ static int tboot_cpu_callback(struct notifier_block *nfb, unsigned long action,
 {
 	switch (action) {
 	case CPU_DYING:
-		atomic_inc(&ap_wfs_count);
+		atomic_inc_unchecked(&ap_wfs_count);
 		if (num_online_cpus() == 1)
-			if (tboot_wait_for_aps(atomic_read(&ap_wfs_count)))
+			if (tboot_wait_for_aps(atomic_read_unchecked(&ap_wfs_count)))
 				return NOTIFY_BAD;
 		break;
 	}
@@ -422,7 +422,7 @@ static __init int tboot_late_init(void)
 
 	tboot_create_trampoline();
 
-	atomic_set(&ap_wfs_count, 0);
+	atomic_set_unchecked(&ap_wfs_count, 0);
 	register_hotcpu_notifier(&tboot_cpu_notifier);
 
 #ifdef CONFIG_DEBUG_FS
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index bf7ef5c..59d0ac9 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -30,9 +30,9 @@ unsigned long profile_pc(struct pt_regs *regs)
 {
 	unsigned long pc = instruction_pointer(regs);
 
-	if (!user_mode_vm(regs) && in_lock_functions(pc)) {
+	if (!user_mode(regs) && in_lock_functions(pc)) {
 #ifdef CONFIG_FRAME_POINTER
-		return *(unsigned long *)(regs->bp + sizeof(long));
+		return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long)));
 #else
 		unsigned long *sp =
 			(unsigned long *)kernel_stack_pointer(regs);
@@ -41,11 +41,17 @@ unsigned long profile_pc(struct pt_regs *regs)
 		 * or above a saved flags. Eflags has bits 22-31 zero,
 		 * kernel addresses don't.
 		 */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		return ktla_ktva(sp[0]);
+#else
 		if (sp[0] >> 22)
 			return sp[0];
 		if (sp[1] >> 22)
 			return sp[1];
 #endif
+
+#endif
 	}
 	return pc;
 }
diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c
index f7fec09..9991981 100644
--- a/arch/x86/kernel/tls.c
+++ b/arch/x86/kernel/tls.c
@@ -84,6 +84,11 @@ int do_set_thread_area(struct task_struct *p, int idx,
 	if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
 		return -EINVAL;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE))
+		return -EINVAL;
+#endif
+
 	set_tls_desc(p, idx, &info, 1);
 
 	return 0;
@@ -200,7 +205,7 @@ int regset_tls_set(struct task_struct *target, const struct user_regset *regset,
 
 	if (kbuf)
 		info = kbuf;
-	else if (__copy_from_user(infobuf, ubuf, count))
+	else if (count > sizeof infobuf || __copy_from_user(infobuf, ubuf, count))
 		return -EFAULT;
 	else
 		info = infobuf;
diff --git a/arch/x86/kernel/tracepoint.c b/arch/x86/kernel/tracepoint.c
index 1c113db..287b42e 100644
--- a/arch/x86/kernel/tracepoint.c
+++ b/arch/x86/kernel/tracepoint.c
@@ -9,11 +9,11 @@
 #include <linux/atomic.h>
 
 atomic_t trace_idt_ctr = ATOMIC_INIT(0);
-struct desc_ptr trace_idt_descr = { NR_VECTORS * 16 - 1,
+const struct desc_ptr trace_idt_descr = { NR_VECTORS * 16 - 1,
 				(unsigned long) trace_idt_table };
 
 /* No need to be aligned, but done to keep all IDTs defined the same way. */
-gate_desc trace_idt_table[NR_VECTORS] __page_aligned_bss;
+gate_desc trace_idt_table[NR_VECTORS] __page_aligned_rodata;
 
 static int trace_irq_vector_refcount;
 static DEFINE_MUTEX(irq_vector_mutex);
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 0d0e922..0886373 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -67,7 +67,7 @@
 #include <asm/proto.h>
 
 /* No need to be aligned, but done to keep all IDTs defined the same way. */
-gate_desc debug_idt_table[NR_VECTORS] __page_aligned_bss;
+gate_desc debug_idt_table[NR_VECTORS] __page_aligned_rodata;
 #else
 #include <asm/processor-flags.h>
 #include <asm/setup.h>
@@ -76,7 +76,7 @@ asmlinkage int system_call(void);
 #endif
 
 /* Must be page-aligned because the real IDT is used in a fixmap. */
-gate_desc idt_table[NR_VECTORS] __page_aligned_bss;
+gate_desc idt_table[NR_VECTORS] __page_aligned_rodata;
 
 DECLARE_BITMAP(used_vectors, NR_VECTORS);
 EXPORT_SYMBOL_GPL(used_vectors);
@@ -108,11 +108,11 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
 }
 
 static nokprobe_inline int
-do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
+do_trap_no_signal(struct task_struct *tsk, int trapnr, const char *str,
 		  struct pt_regs *regs,	long error_code)
 {
 #ifdef CONFIG_X86_32
-	if (regs->flags & X86_VM_MASK) {
+	if (v8086_mode(regs)) {
 		/*
 		 * Traps 0, 1, 3, 4, and 5 should be forwarded to vm86.
 		 * On nmi (interrupt 2), do_trap should not be called.
@@ -125,12 +125,24 @@ do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
 		return -1;
 	}
 #endif
-	if (!user_mode(regs)) {
+	if (!user_mode_novm(regs)) {
 		if (!fixup_exception(regs)) {
 			tsk->thread.error_code = error_code;
 			tsk->thread.trap_nr = trapnr;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+			if (trapnr == X86_TRAP_SS && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS))
+				str = "PAX: suspicious stack segment fault";
+#endif
+
 			die(str, regs, error_code);
 		}
+
+#ifdef CONFIG_PAX_REFCOUNT
+		if (trapnr == X86_TRAP_OF)
+			pax_report_refcount_overflow(regs);
+#endif
+
 		return 0;
 	}
 
@@ -169,7 +181,7 @@ static siginfo_t *fill_trap_info(struct pt_regs *regs, int signr, int trapnr,
 }
 
 static void
-do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
+do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs,
 	long error_code, siginfo_t *info)
 {
 	struct task_struct *tsk = current;
@@ -193,7 +205,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
 	if (show_unhandled_signals && unhandled_signal(tsk, signr) &&
 	    printk_ratelimit()) {
 		pr_info("%s[%d] trap %s ip:%lx sp:%lx error:%lx",
-			tsk->comm, tsk->pid, str,
+			tsk->comm, task_pid_nr(tsk), str,
 			regs->ip, regs->sp, error_code);
 		print_vma_addr(" in ", regs->ip);
 		pr_cont("\n");
@@ -266,6 +278,11 @@ dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code)
 	tsk->thread.error_code = error_code;
 	tsk->thread.trap_nr = X86_TRAP_DF;
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+	if ((unsigned long)tsk->stack - regs->sp <= PAGE_SIZE)
+		die("grsec: kernel stack overflow detected", regs, error_code);	
+#endif
+
 #ifdef CONFIG_DOUBLEFAULT
 	df_debug(regs, error_code);
 #endif
@@ -288,7 +305,7 @@ do_general_protection(struct pt_regs *regs, long error_code)
 	conditional_sti(regs);
 
 #ifdef CONFIG_X86_32
-	if (regs->flags & X86_VM_MASK) {
+	if (v8086_mode(regs)) {
 		local_irq_enable();
 		handle_vm86_fault((struct kernel_vm86_regs *) regs, error_code);
 		goto exit;
@@ -296,18 +313,42 @@ do_general_protection(struct pt_regs *regs, long error_code)
 #endif
 
 	tsk = current;
-	if (!user_mode(regs)) {
+	if (!user_mode_novm(regs)) {
 		if (fixup_exception(regs))
 			goto exit;
 
 		tsk->thread.error_code = error_code;
 		tsk->thread.trap_nr = X86_TRAP_GP;
 		if (notify_die(DIE_GPF, "general protection fault", regs, error_code,
-			       X86_TRAP_GP, SIGSEGV) != NOTIFY_STOP)
+			       X86_TRAP_GP, SIGSEGV) != NOTIFY_STOP) {
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)
+			die("PAX: suspicious general protection fault", regs, error_code);
+		else
+#endif
+
 			die("general protection fault", regs, error_code);
+		}
 		goto exit;
 	}
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+	if (!(__supported_pte_mask & _PAGE_NX) && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) {
+		struct mm_struct *mm = tsk->mm;
+		unsigned long limit;
+
+		down_write(&mm->mmap_sem);
+		limit = mm->context.user_cs_limit;
+		if (limit < TASK_SIZE) {
+			track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC);
+			up_write(&mm->mmap_sem);
+			return;
+		}
+		up_write(&mm->mmap_sem);
+	}
+#endif
+
 	tsk->thread.error_code = error_code;
 	tsk->thread.trap_nr = X86_TRAP_GP;
 
@@ -481,7 +522,7 @@ dotraplinkage void do_debug(struct pt_regs *regs, long error_code)
 	/* It's safe to allow irq's after DR6 has been saved */
 	preempt_conditional_sti(regs);
 
-	if (regs->flags & X86_VM_MASK) {
+	if (v8086_mode(regs)) {
 		handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code,
 					X86_TRAP_DB);
 		preempt_conditional_cli(regs);
@@ -496,7 +537,7 @@ dotraplinkage void do_debug(struct pt_regs *regs, long error_code)
 	 * We already checked v86 mode above, so we can check for kernel mode
 	 * by just checking the CPL of CS.
 	 */
-	if ((dr6 & DR_STEP) && !user_mode(regs)) {
+	if ((dr6 & DR_STEP) && !user_mode_novm(regs)) {
 		tsk->thread.debugreg6 &= ~DR_STEP;
 		set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
 		regs->flags &= ~X86_EFLAGS_TF;
@@ -529,7 +570,7 @@ static void math_error(struct pt_regs *regs, int error_code, int trapnr)
 		return;
 	conditional_sti(regs);
 
-	if (!user_mode_vm(regs))
+	if (!user_mode(regs))
 	{
 		if (!fixup_exception(regs)) {
 			task->thread.error_code = error_code;
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index ea03031..34a5cdda 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -150,7 +150,7 @@ static void cyc2ns_write_end(int cpu, struct cyc2ns_data *data)
 	 */
 	smp_wmb();
 
-	ACCESS_ONCE(c2n->head) = data;
+	ACCESS_ONCE_RW(c2n->head) = data;
 }
 
 /*
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 5d1cbfe..2a21feb 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -845,7 +845,7 @@ int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
 	int ret = NOTIFY_DONE;
 
 	/* We are only interested in userspace traps */
-	if (regs && !user_mode_vm(regs))
+	if (regs && !user_mode(regs))
 		return NOTIFY_DONE;
 
 	switch (val) {
@@ -919,7 +919,7 @@ arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs
 
 	if (nleft != rasize) {
 		pr_err("uprobe: return address clobbered: pid=%d, %%sp=%#lx, "
-			"%%ip=%#lx\n", current->pid, regs->sp, regs->ip);
+			"%%ip=%#lx\n", task_pid_nr(current), regs->sp, regs->ip);
 
 		force_sig_info(SIGSEGV, SEND_SIG_FORCED, current);
 	}
diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S
index b9242ba..50c5edd 100644
--- a/arch/x86/kernel/verify_cpu.S
+++ b/arch/x86/kernel/verify_cpu.S
@@ -20,6 +20,7 @@
  *	arch/x86/boot/compressed/head_64.S: Boot cpu verification
  *	arch/x86/kernel/trampoline_64.S: secondary processor verification
  *	arch/x86/kernel/head_32.S: processor startup
+ *	arch/x86/kernel/acpi/realmode/wakeup.S: 32bit processor resume
  *
  *	verify_cpu, returns the status of longmode and SSE in register %eax.
  *		0: Success    1: Failure
diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
index e8edcf5..27f9344 100644
--- a/arch/x86/kernel/vm86_32.c
+++ b/arch/x86/kernel/vm86_32.c
@@ -44,6 +44,7 @@
 #include <linux/ptrace.h>
 #include <linux/audit.h>
 #include <linux/stddef.h>
+#include <linux/grsecurity.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -150,7 +151,7 @@ struct pt_regs *save_v86_state(struct kernel_vm86_regs *regs)
 		do_exit(SIGSEGV);
 	}
 
-	tss = &per_cpu(init_tss, get_cpu());
+	tss = init_tss + get_cpu();
 	current->thread.sp0 = current->thread.saved_sp0;
 	current->thread.sysenter_cs = __KERNEL_CS;
 	load_sp0(tss, &current->thread);
@@ -214,6 +215,14 @@ SYSCALL_DEFINE1(vm86old, struct vm86_struct __user *, v86)
 
 	if (tsk->thread.saved_sp0)
 		return -EPERM;
+
+#ifdef CONFIG_GRKERNSEC_VM86
+	if (!capable(CAP_SYS_RAWIO)) {
+		gr_handle_vm86();
+		return -EPERM;
+	}
+#endif
+
 	tmp = copy_vm86_regs_from_user(&info.regs, &v86->regs,
 				       offsetof(struct kernel_vm86_struct, vm86plus) -
 				       sizeof(info.regs));
@@ -238,6 +247,13 @@ SYSCALL_DEFINE2(vm86, unsigned long, cmd, unsigned long, arg)
 	int tmp;
 	struct vm86plus_struct __user *v86;
 
+#ifdef CONFIG_GRKERNSEC_VM86
+	if (!capable(CAP_SYS_RAWIO)) {
+		gr_handle_vm86();
+		return -EPERM;
+	}
+#endif
+
 	tsk = current;
 	switch (cmd) {
 	case VM86_REQUEST_IRQ:
@@ -318,7 +334,7 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
 	tsk->thread.saved_fs = info->regs32->fs;
 	tsk->thread.saved_gs = get_user_gs(info->regs32);
 
-	tss = &per_cpu(init_tss, get_cpu());
+	tss = init_tss + get_cpu();
 	tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0;
 	if (cpu_has_sep)
 		tsk->thread.sysenter_cs = 0;
@@ -525,7 +541,7 @@ static void do_int(struct kernel_vm86_regs *regs, int i,
 		goto cannot_handle;
 	if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored))
 		goto cannot_handle;
-	intr_ptr = (unsigned long __user *) (i << 2);
+	intr_ptr = (__force unsigned long __user *) (i << 2);
 	if (get_user(segoffs, intr_ptr))
 		goto cannot_handle;
 	if ((segoffs >> 16) == BIOSSEG)
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 49edf2d..c0d1362 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -26,6 +26,13 @@
 #include <asm/page_types.h>
 #include <asm/cache.h>
 #include <asm/boot.h>
+#include <asm/segment.h>
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+#define __KERNEL_TEXT_OFFSET	(LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR)
+#else
+#define __KERNEL_TEXT_OFFSET	0
+#endif
 
 #undef i386     /* in case the preprocessor is a 32bit one */
 
@@ -69,30 +76,43 @@ jiffies_64 = jiffies;
 
 PHDRS {
 	text PT_LOAD FLAGS(5);          /* R_E */
+#ifdef CONFIG_X86_32
+	module PT_LOAD FLAGS(5);        /* R_E */
+#endif
+#ifdef CONFIG_XEN
+	rodata PT_LOAD FLAGS(5);        /* R_E */
+#else
+	rodata PT_LOAD FLAGS(4);        /* R__ */
+#endif
 	data PT_LOAD FLAGS(6);          /* RW_ */
-#ifdef CONFIG_X86_64
+	init.begin PT_LOAD FLAGS(6);    /* RW_ */
 #ifdef CONFIG_SMP
 	percpu PT_LOAD FLAGS(6);        /* RW_ */
 #endif
+	text.init PT_LOAD FLAGS(5);     /* R_E */
+	text.exit PT_LOAD FLAGS(5);     /* R_E */
 	init PT_LOAD FLAGS(7);          /* RWE */
-#endif
 	note PT_NOTE FLAGS(0);          /* ___ */
 }
 
 SECTIONS
 {
 #ifdef CONFIG_X86_32
-        . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
-        phys_startup_32 = startup_32 - LOAD_OFFSET;
+	. = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR;
 #else
-        . = __START_KERNEL;
-        phys_startup_64 = startup_64 - LOAD_OFFSET;
+	. = __START_KERNEL;
 #endif
 
 	/* Text and read-only data */
-	.text :  AT(ADDR(.text) - LOAD_OFFSET) {
-		_text = .;
+	.text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) {
 		/* bootstrapping code */
+#ifdef CONFIG_X86_32
+		phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
+#else
+		phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
+#endif
+		__LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
+		_text = .;
 		HEAD_TEXT
 		. = ALIGN(8);
 		_stext = .;
@@ -104,13 +124,47 @@ SECTIONS
 		IRQENTRY_TEXT
 		*(.fixup)
 		*(.gnu.warning)
-		/* End of text section */
-		_etext = .;
 	} :text = 0x9090
 
-	NOTES :text :note
+	. += __KERNEL_TEXT_OFFSET;
 
-	EXCEPTION_TABLE(16) :text = 0x9090
+#ifdef CONFIG_X86_32
+	. = ALIGN(PAGE_SIZE);
+	.module.text : AT(ADDR(.module.text) - LOAD_OFFSET) {
+
+#ifdef CONFIG_PAX_KERNEXEC
+		MODULES_EXEC_VADDR = .;
+		BYTE(0)
+		. += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024);
+		. = ALIGN(HPAGE_SIZE) - 1;
+		MODULES_EXEC_END = .;
+#endif
+
+	} :module
+#endif
+
+	.text.end : AT(ADDR(.text.end) - LOAD_OFFSET) {
+		/* End of text section */
+		BYTE(0)
+		_etext = . - __KERNEL_TEXT_OFFSET;
+	}
+
+#ifdef CONFIG_X86_32
+	. = ALIGN(PAGE_SIZE);
+	.rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) {
+		. = ALIGN(PAGE_SIZE);
+		*(.empty_zero_page)
+		*(.initial_pg_fixmap)
+		*(.initial_pg_pmd)
+		*(.initial_page_table)
+		*(.swapper_pg_dir)
+	} :rodata
+#endif
+
+	. = ALIGN(PAGE_SIZE);
+	NOTES :rodata :note
+
+	EXCEPTION_TABLE(16) :rodata
 
 #if defined(CONFIG_DEBUG_RODATA)
 	/* .text should occupy whole number of pages */
@@ -122,16 +176,20 @@ SECTIONS
 
 	/* Data */
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {
+
+#ifdef CONFIG_PAX_KERNEXEC
+		. = ALIGN(HPAGE_SIZE);
+#else
+		. = ALIGN(PAGE_SIZE);
+#endif
+
 		/* Start of data section */
 		_sdata = .;
 
 		/* init_task */
 		INIT_TASK_DATA(THREAD_SIZE)
 
-#ifdef CONFIG_X86_32
-		/* 32 bit has nosave before _edata */
 		NOSAVE_DATA
-#endif
 
 		PAGE_ALIGNED_DATA(PAGE_SIZE)
 
@@ -174,12 +232,19 @@ SECTIONS
        . = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE);
 
 	/* Init code and data - will be freed after init */
-	. = ALIGN(PAGE_SIZE);
 	.init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) {
+		BYTE(0)
+
+#ifdef CONFIG_PAX_KERNEXEC
+		. = ALIGN(HPAGE_SIZE);
+#else
+		. = ALIGN(PAGE_SIZE);
+#endif
+
 		__init_begin = .; /* paired with __init_end */
-	}
+	} :init.begin
 
-#if defined(CONFIG_X86_64) && defined(CONFIG_SMP)
+#ifdef CONFIG_SMP
 	/*
 	 * percpu offsets are zero-based on SMP.  PERCPU_VADDR() changes the
 	 * output PHDR, so the next output section - .init.text - should
@@ -188,12 +253,27 @@ SECTIONS
 	PERCPU_VADDR(INTERNODE_CACHE_BYTES, 0, :percpu)
 #endif
 
-	INIT_TEXT_SECTION(PAGE_SIZE)
-#ifdef CONFIG_X86_64
-	:init
-#endif
+	. = ALIGN(PAGE_SIZE);
+	init_begin = .;
+	.init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) {
+		VMLINUX_SYMBOL(_sinittext) = .;
+		INIT_TEXT
+		VMLINUX_SYMBOL(_einittext) = .;
+		. = ALIGN(PAGE_SIZE);
+	} :text.init
 
-	INIT_DATA_SECTION(16)
+	/*
+	 * .exit.text is discard at runtime, not link time, to deal with
+	 *  references from .altinstructions and .eh_frame
+	 */
+	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) {
+		EXIT_TEXT
+		. = ALIGN(16);
+	} :text.exit
+	. = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text);
+
+	. = ALIGN(PAGE_SIZE);
+	INIT_DATA_SECTION(16) :init
 
 	.x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) {
 		__x86_cpu_dev_start = .;
@@ -264,19 +344,12 @@ SECTIONS
 	}
 
 	. = ALIGN(8);
-	/*
-	 * .exit.text is discard at runtime, not link time, to deal with
-	 *  references from .altinstructions and .eh_frame
-	 */
-	.exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
-		EXIT_TEXT
-	}
 
 	.exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
 		EXIT_DATA
 	}
 
-#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
+#ifndef CONFIG_SMP
 	PERCPU_SECTION(INTERNODE_CACHE_BYTES)
 #endif
 
@@ -295,16 +368,10 @@ SECTIONS
 	.smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
 		__smp_locks = .;
 		*(.smp_locks)
-		. = ALIGN(PAGE_SIZE);
 		__smp_locks_end = .;
+		. = ALIGN(PAGE_SIZE);
 	}
 
-#ifdef CONFIG_X86_64
-	.data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
-		NOSAVE_DATA
-	}
-#endif
-
 	/* BSS */
 	. = ALIGN(PAGE_SIZE);
 	.bss : AT(ADDR(.bss) - LOAD_OFFSET) {
@@ -320,6 +387,7 @@ SECTIONS
 		__brk_base = .;
 		. += 64 * 1024;		/* 64k alignment slop space */
 		*(.brk_reservation)	/* areas brk users have reserved */
+		. = ALIGN(HPAGE_SIZE);
 		__brk_limit = .;
 	}
 
@@ -346,13 +414,12 @@ SECTIONS
  * for the boot processor.
  */
 #define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load
-INIT_PER_CPU(gdt_page);
 INIT_PER_CPU(irq_stack_union);
 
 /*
  * Build-time check on the image size:
  */
-. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
+. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE),
 	   "kernel image bigger than KERNEL_IMAGE_SIZE");
 
 #ifdef CONFIG_SMP
diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
index e1e1e80..1400089 100644
--- a/arch/x86/kernel/vsyscall_64.c
+++ b/arch/x86/kernel/vsyscall_64.c
@@ -54,15 +54,13 @@
 
 DEFINE_VVAR(int, vgetcpu_mode);
 
-static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE;
+static enum { EMULATE, NONE } vsyscall_mode = EMULATE;
 
 static int __init vsyscall_setup(char *str)
 {
 	if (str) {
 		if (!strcmp("emulate", str))
 			vsyscall_mode = EMULATE;
-		else if (!strcmp("native", str))
-			vsyscall_mode = NATIVE;
 		else if (!strcmp("none", str))
 			vsyscall_mode = NONE;
 		else
@@ -279,8 +277,7 @@ do_ret:
 	return true;
 
 sigsegv:
-	force_sig(SIGSEGV, current);
-	return true;
+	do_group_exit(SIGKILL);
 }
 
 /*
@@ -331,10 +328,7 @@ void __init map_vsyscall(void)
 	extern char __vsyscall_page;
 	unsigned long physaddr_vsyscall = __pa_symbol(&__vsyscall_page);
 
-	__set_fixmap(VSYSCALL_PAGE, physaddr_vsyscall,
-		     vsyscall_mode == NATIVE
-		     ? PAGE_KERNEL_VSYSCALL
-		     : PAGE_KERNEL_VVAR);
+	__set_fixmap(VSYSCALL_PAGE, physaddr_vsyscall, PAGE_KERNEL_VVAR);
 	BUILD_BUG_ON((unsigned long)__fix_to_virt(VSYSCALL_PAGE) !=
 		     (unsigned long)VSYSCALL_ADDR);
 }
diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c
index 04068192..4d75aa6 100644
--- a/arch/x86/kernel/x8664_ksyms_64.c
+++ b/arch/x86/kernel/x8664_ksyms_64.c
@@ -34,8 +34,6 @@ EXPORT_SYMBOL(copy_user_generic_string);
 EXPORT_SYMBOL(copy_user_generic_unrolled);
 EXPORT_SYMBOL(copy_user_enhanced_fast_string);
 EXPORT_SYMBOL(__copy_user_nocache);
-EXPORT_SYMBOL(_copy_from_user);
-EXPORT_SYMBOL(_copy_to_user);
 
 EXPORT_SYMBOL(copy_page);
 EXPORT_SYMBOL(clear_page);
@@ -73,3 +71,7 @@ EXPORT_SYMBOL(___preempt_schedule);
 EXPORT_SYMBOL(___preempt_schedule_context);
 #endif
 #endif
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+EXPORT_SYMBOL(cpu_pgd);
+#endif
diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
index e48b674..a451dd9 100644
--- a/arch/x86/kernel/x86_init.c
+++ b/arch/x86/kernel/x86_init.c
@@ -93,7 +93,7 @@ struct x86_cpuinit_ops x86_cpuinit = {
 static void default_nmi_init(void) { };
 static int default_i8042_detect(void) { return 1; };
 
-struct x86_platform_ops x86_platform = {
+struct x86_platform_ops x86_platform __read_only = {
 	.calibrate_tsc			= native_calibrate_tsc,
 	.get_wallclock			= mach_get_cmos_time,
 	.set_wallclock			= mach_set_rtc_mmss,
@@ -109,7 +109,7 @@ struct x86_platform_ops x86_platform = {
 EXPORT_SYMBOL_GPL(x86_platform);
 
 #if defined(CONFIG_PCI_MSI)
-struct x86_msi_ops x86_msi = {
+struct x86_msi_ops x86_msi __read_only = {
 	.setup_msi_irqs		= native_setup_msi_irqs,
 	.compose_msi_msg	= native_compose_msi_msg,
 	.teardown_msi_irq	= native_teardown_msi_irq,
@@ -150,7 +150,7 @@ u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag)
 }
 #endif
 
-struct x86_io_apic_ops x86_io_apic_ops = {
+struct x86_io_apic_ops x86_io_apic_ops __read_only = {
 	.init			= native_io_apic_init_mappings,
 	.read			= native_io_apic_read,
 	.write			= native_io_apic_write,
diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
index a4b451c..8dfe1ad 100644
--- a/arch/x86/kernel/xsave.c
+++ b/arch/x86/kernel/xsave.c
@@ -164,18 +164,18 @@ static inline int save_xstate_epilog(void __user *buf, int ia32_frame)
 
 	/* Setup the bytes not touched by the [f]xsave and reserved for SW. */
 	sw_bytes = ia32_frame ? &fx_sw_reserved_ia32 : &fx_sw_reserved;
-	err = __copy_to_user(&x->i387.sw_reserved, sw_bytes, sizeof(*sw_bytes));
+	err = __copy_to_user(x->i387.sw_reserved, sw_bytes, sizeof(*sw_bytes));
 
 	if (!use_xsave())
 		return err;
 
-	err |= __put_user(FP_XSTATE_MAGIC2, (__u32 *)(buf + xstate_size));
+	err |= __put_user(FP_XSTATE_MAGIC2, (__u32 __user *)(buf + xstate_size));
 
 	/*
 	 * Read the xstate_bv which we copied (directly from the cpu or
 	 * from the state in task struct) to the user buffers.
 	 */
-	err |= __get_user(xstate_bv, (__u32 *)&x->xsave_hdr.xstate_bv);
+	err |= __get_user(xstate_bv, (__u32 __user *)&x->xsave_hdr.xstate_bv);
 
 	/*
 	 * For legacy compatible, we always set FP/SSE bits in the bit
@@ -190,7 +190,7 @@ static inline int save_xstate_epilog(void __user *buf, int ia32_frame)
 	 */
 	xstate_bv |= XSTATE_FPSSE;
 
-	err |= __put_user(xstate_bv, (__u32 *)&x->xsave_hdr.xstate_bv);
+	err |= __put_user(xstate_bv, (__u32 __user *)&x->xsave_hdr.xstate_bv);
 
 	return err;
 }
@@ -199,6 +199,7 @@ static inline int save_user_xstate(struct xsave_struct __user *buf)
 {
 	int err;
 
+	buf = (struct xsave_struct __user *)____m(buf);
 	if (use_xsave())
 		err = xsave_user(buf);
 	else if (use_fxsr())
@@ -311,6 +312,7 @@ sanitize_restored_xstate(struct task_struct *tsk,
  */
 static inline int restore_user_xstate(void __user *buf, u64 xbv, int fx_only)
 {
+	buf = (void __user *)____m(buf);
 	if (use_xsave()) {
 		if ((unsigned long)buf % 64 || fx_only) {
 			u64 init_bv = pcntxt_mask & ~XSTATE_FPSSE;
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 38a0afe..94421a9 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -166,15 +166,20 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
 			      struct kvm_cpuid2 *cpuid,
 			      struct kvm_cpuid_entry2 __user *entries)
 {
-	int r;
+	int r, i;
 
 	r = -E2BIG;
 	if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
 		goto out;
 	r = -EFAULT;
-	if (copy_from_user(&vcpu->arch.cpuid_entries, entries,
-			   cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
+	if (!access_ok(VERIFY_READ, entries, cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
 		goto out;
+	for (i = 0; i < cpuid->nent; ++i) {
+		struct kvm_cpuid_entry2 cpuid_entry;
+		if (__copy_from_user(&cpuid_entry, entries + i, sizeof(cpuid_entry)))
+			goto out;
+		vcpu->arch.cpuid_entries[i] = cpuid_entry;
+	}
 	vcpu->arch.cpuid_nent = cpuid->nent;
 	kvm_apic_set_version(vcpu);
 	kvm_x86_ops->cpuid_update(vcpu);
@@ -189,15 +194,19 @@ int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
 			      struct kvm_cpuid2 *cpuid,
 			      struct kvm_cpuid_entry2 __user *entries)
 {
-	int r;
+	int r, i;
 
 	r = -E2BIG;
 	if (cpuid->nent < vcpu->arch.cpuid_nent)
 		goto out;
 	r = -EFAULT;
-	if (copy_to_user(entries, &vcpu->arch.cpuid_entries,
-			 vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
+	if (!access_ok(VERIFY_WRITE, entries, vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
 		goto out;
+	for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {
+		struct kvm_cpuid_entry2 cpuid_entry = vcpu->arch.cpuid_entries[i];
+		if (__copy_to_user(entries + i, &cpuid_entry, sizeof(cpuid_entry)))
+			goto out;
+	}
 	return 0;
 
 out:
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 453e5fb..214168f 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -55,7 +55,7 @@
 #define APIC_BUS_CYCLE_NS 1
 
 /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */
-#define apic_debug(fmt, arg...)
+#define apic_debug(fmt, arg...) do {} while (0)
 
 #define APIC_LVT_NUM			6
 /* 14 is the version for Xeon and Pentium 8.4.8*/
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
index 4107765..d9eb358 100644
--- a/arch/x86/kvm/paging_tmpl.h
+++ b/arch/x86/kvm/paging_tmpl.h
@@ -331,7 +331,7 @@ retry_walk:
 		if (unlikely(kvm_is_error_hva(host_addr)))
 			goto error;
 
-		ptep_user = (pt_element_t __user *)((void *)host_addr + offset);
+		ptep_user = (pt_element_t __force_user *)((void *)host_addr + offset);
 		if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte))))
 			goto error;
 		walker->ptep_user[walker->level - 1] = ptep_user;
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index b5e994a..35b5866 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -3541,7 +3541,11 @@ static void reload_tss(struct kvm_vcpu *vcpu)
 	int cpu = raw_smp_processor_id();
 
 	struct svm_cpu_data *sd = per_cpu(svm_data, cpu);
+
+	pax_open_kernel();
 	sd->tss_desc->type = 9; /* available 32/64-bit TSS */
+	pax_close_kernel();
+
 	load_TR_desc();
 }
 
@@ -3942,6 +3946,10 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
 #endif
 #endif
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 	reload_tss(vcpu);
 
 	local_irq_disable();
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 801332e..eeff1cc 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -1339,12 +1339,12 @@ static void vmcs_write64(unsigned long field, u64 value)
 #endif
 }
 
-static void vmcs_clear_bits(unsigned long field, u32 mask)
+static void vmcs_clear_bits(unsigned long field, unsigned long mask)
 {
 	vmcs_writel(field, vmcs_readl(field) & ~mask);
 }
 
-static void vmcs_set_bits(unsigned long field, u32 mask)
+static void vmcs_set_bits(unsigned long field, unsigned long mask)
 {
 	vmcs_writel(field, vmcs_readl(field) | mask);
 }
@@ -1604,7 +1604,11 @@ static void reload_tss(void)
 	struct desc_struct *descs;
 
 	descs = (void *)gdt->address;
+
+	pax_open_kernel();
 	descs[GDT_ENTRY_TSS].type = 9; /* available TSS */
+	pax_close_kernel();
+
 	load_TR_desc();
 }
 
@@ -1832,6 +1836,10 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
 		vmcs_writel(HOST_TR_BASE, kvm_read_tr_base()); /* 22.2.4 */
 		vmcs_writel(HOST_GDTR_BASE, gdt->address);   /* 22.2.4 */
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		vmcs_writel(HOST_CR3, read_cr3());  /* 22.2.3  FIXME: shadow tables */
+#endif
+
 		rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
 		vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
 		vmx->loaded_vmcs->cpu = cpu;
@@ -2121,7 +2129,7 @@ static void setup_msrs(struct vcpu_vmx *vmx)
  * reads and returns guest's timestamp counter "register"
  * guest_tsc = host_tsc + tsc_offset    -- 21.3
  */
-static u64 guest_read_tsc(void)
+static u64 __intentional_overflow(-1) guest_read_tsc(void)
 {
 	u64 host_tsc, tsc_offset;
 
@@ -3093,8 +3101,11 @@ static __init int hardware_setup(void)
 	if (!cpu_has_vmx_flexpriority())
 		flexpriority_enabled = 0;
 
-	if (!cpu_has_vmx_tpr_shadow())
-		kvm_x86_ops->update_cr8_intercept = NULL;
+	if (!cpu_has_vmx_tpr_shadow()) {
+		pax_open_kernel();
+		*(void **)&kvm_x86_ops->update_cr8_intercept = NULL;
+		pax_close_kernel();
+	}
 
 	if (enable_ept && !cpu_has_vmx_ept_2m_page())
 		kvm_disable_largepages();
@@ -3105,13 +3116,15 @@ static __init int hardware_setup(void)
 	if (!cpu_has_vmx_apicv())
 		enable_apicv = 0;
 
+	pax_open_kernel();
 	if (enable_apicv)
-		kvm_x86_ops->update_cr8_intercept = NULL;
+		*(void **)&kvm_x86_ops->update_cr8_intercept = NULL;
 	else {
-		kvm_x86_ops->hwapic_irr_update = NULL;
-		kvm_x86_ops->deliver_posted_interrupt = NULL;
-		kvm_x86_ops->sync_pir_to_irr = vmx_sync_pir_to_irr_dummy;
+		*(void **)&kvm_x86_ops->hwapic_irr_update = NULL;
+		*(void **)&kvm_x86_ops->deliver_posted_interrupt = NULL;
+		*(void **)&kvm_x86_ops->sync_pir_to_irr = vmx_sync_pir_to_irr_dummy;
 	}
+	pax_close_kernel();
 
 	if (nested)
 		nested_vmx_setup_ctls_msrs();
@@ -4221,7 +4234,10 @@ static void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
 
 	vmcs_writel(HOST_CR0, read_cr0() & ~X86_CR0_TS);  /* 22.2.3 */
 	vmcs_writel(HOST_CR4, read_cr4());  /* 22.2.3, 22.2.5 */
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 	vmcs_writel(HOST_CR3, read_cr3());  /* 22.2.3  FIXME: shadow tables */
+#endif
 
 	vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS);  /* 22.2.4 */
 #ifdef CONFIG_X86_64
@@ -4243,7 +4259,7 @@ static void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
 	vmcs_writel(HOST_IDTR_BASE, dt.address);   /* 22.2.4 */
 	vmx->host_idt_base = dt.address;
 
-	vmcs_writel(HOST_RIP, vmx_return); /* 22.2.5 */
+	vmcs_writel(HOST_RIP, ktla_ktva(vmx_return)); /* 22.2.5 */
 
 	rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
 	vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
@@ -7413,6 +7429,12 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
 		"jmp 2f \n\t"
 		"1: " __ex(ASM_VMX_VMRESUME) "\n\t"
 		"2: "
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		"ljmp %[cs],$3f\n\t"
+		"3: "
+#endif
+
 		/* Save guest registers, load host registers, keep flags */
 		"mov %0, %c[wordsize](%%" _ASM_SP ") \n\t"
 		"pop %0 \n\t"
@@ -7465,6 +7487,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
 #endif
 		[cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)),
 		[wordsize]"i"(sizeof(ulong))
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		,[cs]"i"(__KERNEL_CS)
+#endif
+
 	      : "cc", "memory"
 #ifdef CONFIG_X86_64
 		, "rax", "rbx", "rdi", "rsi"
@@ -7478,7 +7505,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
 	if (debugctlmsr)
 		update_debugctlmsr(debugctlmsr);
 
-#ifndef CONFIG_X86_64
+#ifdef CONFIG_X86_32
 	/*
 	 * The sysexit path does not restore ds/es, so we must set them to
 	 * a reasonable value ourselves.
@@ -7487,8 +7514,18 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
 	 * may be executed in interrupt context, which saves and restore segments
 	 * around it, nullifying its effect.
 	 */
-	loadsegment(ds, __USER_DS);
-	loadsegment(es, __USER_DS);
+	loadsegment(ds, __KERNEL_DS);
+	loadsegment(es, __KERNEL_DS);
+	loadsegment(ss, __KERNEL_DS);
+
+#ifdef CONFIG_PAX_KERNEXEC
+	loadsegment(fs, __KERNEL_PERCPU);
+#endif
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	__set_fs(current_thread_info()->addr_limit);
+#endif
+
 #endif
 
 	vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ef432f8..a630659 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1808,8 +1808,8 @@ static int xen_hvm_config(struct kvm_vcpu *vcpu, u64 data)
 {
 	struct kvm *kvm = vcpu->kvm;
 	int lm = is_long_mode(vcpu);
-	u8 *blob_addr = lm ? (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_64
-		: (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
+	u8 __user *blob_addr = lm ? (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_64
+		: (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
 	u8 blob_size = lm ? kvm->arch.xen_hvm_config.blob_size_64
 		: kvm->arch.xen_hvm_config.blob_size_32;
 	u32 page_num = data & ~PAGE_MASK;
@@ -2729,6 +2729,8 @@ long kvm_arch_dev_ioctl(struct file *filp,
 		if (n < msr_list.nmsrs)
 			goto out;
 		r = -EFAULT;
+		if (num_msrs_to_save > ARRAY_SIZE(msrs_to_save))
+			goto out;
 		if (copy_to_user(user_msr_list->indices, &msrs_to_save,
 				 num_msrs_to_save * sizeof(u32)))
 			goto out;
@@ -5567,7 +5569,7 @@ static struct notifier_block pvclock_gtod_notifier = {
 };
 #endif
 
-int kvm_arch_init(void *opaque)
+int kvm_arch_init(const void *opaque)
 {
 	int r;
 	struct kvm_x86_ops *ops = opaque;
diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
index aae9413..d11e829 100644
--- a/arch/x86/lguest/boot.c
+++ b/arch/x86/lguest/boot.c
@@ -1206,9 +1206,10 @@ static __init int early_put_chars(u32 vtermno, const char *buf, int count)
  * Rebooting also tells the Host we're finished, but the RESTART flag tells the
  * Launcher to reboot us.
  */
-static void lguest_restart(char *reason)
+static __noreturn void lguest_restart(char *reason)
 {
 	hcall(LHCALL_SHUTDOWN, __pa(reason), LGUEST_SHUTDOWN_RESTART, 0, 0);
+	BUG();
 }
 
 /*G:050
diff --git a/arch/x86/lib/atomic64_386_32.S b/arch/x86/lib/atomic64_386_32.S
index 00933d5..3a64af9 100644
--- a/arch/x86/lib/atomic64_386_32.S
+++ b/arch/x86/lib/atomic64_386_32.S
@@ -48,6 +48,10 @@ BEGIN(read)
 	movl  (v), %eax
 	movl 4(v), %edx
 RET_ENDP
+BEGIN(read_unchecked)
+	movl  (v), %eax
+	movl 4(v), %edx
+RET_ENDP
 #undef v
 
 #define v %esi
@@ -55,6 +59,10 @@ BEGIN(set)
 	movl %ebx,  (v)
 	movl %ecx, 4(v)
 RET_ENDP
+BEGIN(set_unchecked)
+	movl %ebx,  (v)
+	movl %ecx, 4(v)
+RET_ENDP
 #undef v
 
 #define v  %esi
@@ -70,6 +78,20 @@ RET_ENDP
 BEGIN(add)
 	addl %eax,  (v)
 	adcl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	subl %eax,  (v)
+	sbbl %edx, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(add_unchecked)
+	addl %eax,  (v)
+	adcl %edx, 4(v)
 RET_ENDP
 #undef v
 
@@ -77,6 +99,24 @@ RET_ENDP
 BEGIN(add_return)
 	addl  (v), %eax
 	adcl 4(v), %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(add_return_unchecked)
+	addl  (v), %eax
+	adcl 4(v), %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -86,6 +126,20 @@ RET_ENDP
 BEGIN(sub)
 	subl %eax,  (v)
 	sbbl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	addl %eax,  (v)
+	adcl %edx, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(sub_unchecked)
+	subl %eax,  (v)
+	sbbl %edx, 4(v)
 RET_ENDP
 #undef v
 
@@ -96,6 +150,27 @@ BEGIN(sub_return)
 	sbbl $0, %edx
 	addl  (v), %eax
 	adcl 4(v), %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(sub_return_unchecked)
+	negl %edx
+	negl %eax
+	sbbl $0, %edx
+	addl  (v), %eax
+	adcl 4(v), %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -105,6 +180,20 @@ RET_ENDP
 BEGIN(inc)
 	addl $1,  (v)
 	adcl $0, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	subl $1,  (v)
+	sbbl $0, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(inc_unchecked)
+	addl $1,  (v)
+	adcl $0, 4(v)
 RET_ENDP
 #undef v
 
@@ -114,6 +203,26 @@ BEGIN(inc_return)
 	movl 4(v), %edx
 	addl $1, %eax
 	adcl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(inc_return_unchecked)
+	movl  (v), %eax
+	movl 4(v), %edx
+	addl $1, %eax
+	adcl $0, %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -123,6 +232,20 @@ RET_ENDP
 BEGIN(dec)
 	subl $1,  (v)
 	sbbl $0, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 0f
+	addl $1,  (v)
+	adcl $0, 4(v)
+	int $4
+0:
+	_ASM_EXTABLE(0b, 0b)
+#endif
+
+RET_ENDP
+BEGIN(dec_unchecked)
+	subl $1,  (v)
+	sbbl $0, 4(v)
 RET_ENDP
 #undef v
 
@@ -132,6 +255,26 @@ BEGIN(dec_return)
 	movl 4(v), %edx
 	subl $1, %eax
 	sbbl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
+	movl %eax,  (v)
+	movl %edx, 4(v)
+
+#ifdef CONFIG_PAX_REFCOUNT
+2:
+#endif
+
+RET_ENDP
+BEGIN(dec_return_unchecked)
+	movl  (v), %eax
+	movl 4(v), %edx
+	subl $1, %eax
+	sbbl $0, %edx
 	movl %eax,  (v)
 	movl %edx, 4(v)
 RET_ENDP
@@ -143,6 +286,13 @@ BEGIN(add_unless)
 	adcl %edx, %edi
 	addl  (v), %eax
 	adcl 4(v), %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
 	cmpl %eax, %ecx
 	je 3f
 1:
@@ -168,6 +318,13 @@ BEGIN(inc_not_zero)
 1:
 	addl $1, %eax
 	adcl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
 	movl %eax,  (v)
 	movl %edx, 4(v)
 	movl $1, %eax
@@ -186,6 +343,13 @@ BEGIN(dec_if_positive)
 	movl 4(v), %edx
 	subl $1, %eax
 	sbbl $0, %edx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 1f)
+#endif
+
 	js 1f
 	movl %eax,  (v)
 	movl %edx, 4(v)
diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S
index f5cc9eb..51fa319 100644
--- a/arch/x86/lib/atomic64_cx8_32.S
+++ b/arch/x86/lib/atomic64_cx8_32.S
@@ -35,10 +35,20 @@ ENTRY(atomic64_read_cx8)
 	CFI_STARTPROC
 
 	read64 %ecx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_read_cx8)
 
+ENTRY(atomic64_read_unchecked_cx8)
+	CFI_STARTPROC
+
+	read64 %ecx
+	pax_force_retaddr
+	ret
+	CFI_ENDPROC
+ENDPROC(atomic64_read_unchecked_cx8)
+
 ENTRY(atomic64_set_cx8)
 	CFI_STARTPROC
 
@@ -48,10 +58,25 @@ ENTRY(atomic64_set_cx8)
 	cmpxchg8b (%esi)
 	jne 1b
 
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_set_cx8)
 
+ENTRY(atomic64_set_unchecked_cx8)
+	CFI_STARTPROC
+
+1:
+/* we don't need LOCK_PREFIX since aligned 64-bit writes
+ * are atomic on 586 and newer */
+	cmpxchg8b (%esi)
+	jne 1b
+
+	pax_force_retaddr
+	ret
+	CFI_ENDPROC
+ENDPROC(atomic64_set_unchecked_cx8)
+
 ENTRY(atomic64_xchg_cx8)
 	CFI_STARTPROC
 
@@ -60,12 +85,13 @@ ENTRY(atomic64_xchg_cx8)
 	cmpxchg8b (%esi)
 	jne 1b
 
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_xchg_cx8)
 
-.macro addsub_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
+.macro addsub_return func ins insc unchecked=""
+ENTRY(atomic64_\func\()_return\unchecked\()_cx8)
 	CFI_STARTPROC
 	SAVE ebp
 	SAVE ebx
@@ -82,27 +108,44 @@ ENTRY(atomic64_\func\()_return_cx8)
 	movl %edx, %ecx
 	\ins\()l %esi, %ebx
 	\insc\()l %edi, %ecx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+2:
+	_ASM_EXTABLE(2b, 3f)
+#endif
+.endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%ebp)
 	jne 1b
-
-10:
 	movl %ebx, %eax
 	movl %ecx, %edx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+3:
+#endif
+.endif
+
 	RESTORE edi
 	RESTORE esi
 	RESTORE ebx
 	RESTORE ebp
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8)
 .endm
 
 addsub_return add add adc
 addsub_return sub sub sbb
+addsub_return add add adc _unchecked
+addsub_return sub sub sbb _unchecked
 
-.macro incdec_return func ins insc
-ENTRY(atomic64_\func\()_return_cx8)
+.macro incdec_return func ins insc unchecked=""
+ENTRY(atomic64_\func\()_return\unchecked\()_cx8)
 	CFI_STARTPROC
 	SAVE ebx
 
@@ -112,21 +155,39 @@ ENTRY(atomic64_\func\()_return_cx8)
 	movl %edx, %ecx
 	\ins\()l $1, %ebx
 	\insc\()l $0, %ecx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+2:
+	_ASM_EXTABLE(2b, 3f)
+#endif
+.endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
 	jne 1b
 
-10:
 	movl %ebx, %eax
 	movl %ecx, %edx
+
+.ifb \unchecked
+#ifdef CONFIG_PAX_REFCOUNT
+3:
+#endif
+.endif
+
 	RESTORE ebx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
-ENDPROC(atomic64_\func\()_return_cx8)
+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8)
 .endm
 
 incdec_return inc add adc
 incdec_return dec sub sbb
+incdec_return inc add adc _unchecked
+incdec_return dec sub sbb _unchecked
 
 ENTRY(atomic64_dec_if_positive_cx8)
 	CFI_STARTPROC
@@ -138,6 +199,13 @@ ENTRY(atomic64_dec_if_positive_cx8)
 	movl %edx, %ecx
 	subl $1, %ebx
 	sbb $0, %ecx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 2f)
+#endif
+
 	js 2f
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
@@ -147,6 +215,7 @@ ENTRY(atomic64_dec_if_positive_cx8)
 	movl %ebx, %eax
 	movl %ecx, %edx
 	RESTORE ebx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_dec_if_positive_cx8)
@@ -171,6 +240,13 @@ ENTRY(atomic64_add_unless_cx8)
 	movl %edx, %ecx
 	addl %ebp, %ebx
 	adcl %edi, %ecx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 3f)
+#endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
 	jne 1b
@@ -181,6 +257,7 @@ ENTRY(atomic64_add_unless_cx8)
 	CFI_ADJUST_CFA_OFFSET -8
 	RESTORE ebx
 	RESTORE ebp
+	pax_force_retaddr
 	ret
 4:
 	cmpl %edx, 4(%esp)
@@ -203,6 +280,13 @@ ENTRY(atomic64_inc_not_zero_cx8)
 	xorl %ecx, %ecx
 	addl $1, %ebx
 	adcl %edx, %ecx
+
+#ifdef CONFIG_PAX_REFCOUNT
+	into
+1234:
+	_ASM_EXTABLE(1234b, 3f)
+#endif
+
 	LOCK_PREFIX
 	cmpxchg8b (%esi)
 	jne 1b
@@ -210,6 +294,7 @@ ENTRY(atomic64_inc_not_zero_cx8)
 	movl $1, %eax
 3:
 	RESTORE ebx
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(atomic64_inc_not_zero_cx8)
diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S
index e78b8eee..7e173a8 100644
--- a/arch/x86/lib/checksum_32.S
+++ b/arch/x86/lib/checksum_32.S
@@ -29,7 +29,8 @@
 #include <asm/dwarf2.h>
 #include <asm/errno.h>
 #include <asm/asm.h>
-				
+#include <asm/segment.h>
+
 /*
  * computes a partial checksum, e.g. for TCP/UDP fragments
  */
@@ -293,9 +294,24 @@ unsigned int csum_partial_copy_generic (const char *src, char *dst,
 
 #define ARGBASE 16		
 #define FP		12
-		
-ENTRY(csum_partial_copy_generic)
+
+ENTRY(csum_partial_copy_generic_to_user)
 	CFI_STARTPROC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %es
+	jmp csum_partial_copy_generic
+#endif
+
+ENTRY(csum_partial_copy_generic_from_user)
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %ds
+#endif
+
+ENTRY(csum_partial_copy_generic)
 	subl  $4,%esp	
 	CFI_ADJUST_CFA_OFFSET 4
 	pushl_cfi %edi
@@ -317,7 +333,7 @@ ENTRY(csum_partial_copy_generic)
 	jmp 4f
 SRC(1:	movw (%esi), %bx	)
 	addl $2, %esi
-DST(	movw %bx, (%edi)	)
+DST(	movw %bx, %es:(%edi)	)
 	addl $2, %edi
 	addw %bx, %ax	
 	adcl $0, %eax
@@ -329,30 +345,30 @@ DST(	movw %bx, (%edi)	)
 SRC(1:	movl (%esi), %ebx	)
 SRC(	movl 4(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, (%edi)	)
+DST(	movl %ebx, %es:(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 4(%edi)	)
+DST(	movl %edx, %es:4(%edi)	)
 
 SRC(	movl 8(%esi), %ebx	)
 SRC(	movl 12(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, 8(%edi)	)
+DST(	movl %ebx, %es:8(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 12(%edi)	)
+DST(	movl %edx, %es:12(%edi)	)
 
 SRC(	movl 16(%esi), %ebx 	)
 SRC(	movl 20(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, 16(%edi)	)
+DST(	movl %ebx, %es:16(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 20(%edi)	)
+DST(	movl %edx, %es:20(%edi)	)
 
 SRC(	movl 24(%esi), %ebx	)
 SRC(	movl 28(%esi), %edx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, 24(%edi)	)
+DST(	movl %ebx, %es:24(%edi)	)
 	adcl %edx, %eax
-DST(	movl %edx, 28(%edi)	)
+DST(	movl %edx, %es:28(%edi)	)
 
 	lea 32(%esi), %esi
 	lea 32(%edi), %edi
@@ -366,7 +382,7 @@ DST(	movl %edx, 28(%edi)	)
 	shrl $2, %edx			# This clears CF
 SRC(3:	movl (%esi), %ebx	)
 	adcl %ebx, %eax
-DST(	movl %ebx, (%edi)	)
+DST(	movl %ebx, %es:(%edi)	)
 	lea 4(%esi), %esi
 	lea 4(%edi), %edi
 	dec %edx
@@ -378,12 +394,12 @@ DST(	movl %ebx, (%edi)	)
 	jb 5f
 SRC(	movw (%esi), %cx	)
 	leal 2(%esi), %esi
-DST(	movw %cx, (%edi)	)
+DST(	movw %cx, %es:(%edi)	)
 	leal 2(%edi), %edi
 	je 6f
 	shll $16,%ecx
 SRC(5:	movb (%esi), %cl	)
-DST(	movb %cl, (%edi)	)
+DST(	movb %cl, %es:(%edi)	)
 6:	addl %ecx, %eax
 	adcl $0, %eax
 7:
@@ -394,7 +410,7 @@ DST(	movb %cl, (%edi)	)
 
 6001:
 	movl ARGBASE+20(%esp), %ebx	# src_err_ptr
-	movl $-EFAULT, (%ebx)
+	movl $-EFAULT, %ss:(%ebx)
 
 	# zero the complete destination - computing the rest
 	# is too much work 
@@ -407,11 +423,15 @@ DST(	movb %cl, (%edi)	)
 
 6002:
 	movl ARGBASE+24(%esp), %ebx	# dst_err_ptr
-	movl $-EFAULT,(%ebx)
+	movl $-EFAULT,%ss:(%ebx)
 	jmp 5000b
 
 .previous
 
+	pushl_cfi %ss
+	popl_cfi %ds
+	pushl_cfi %ss
+	popl_cfi %es
 	popl_cfi %ebx
 	CFI_RESTORE ebx
 	popl_cfi %esi
@@ -421,26 +441,43 @@ DST(	movb %cl, (%edi)	)
 	popl_cfi %ecx			# equivalent to addl $4,%esp
 	ret	
 	CFI_ENDPROC
-ENDPROC(csum_partial_copy_generic)
+ENDPROC(csum_partial_copy_generic_to_user)
 
 #else
 
 /* Version for PentiumII/PPro */
 
 #define ROUND1(x) \
+	nop; nop; nop;				\
 	SRC(movl x(%esi), %ebx	)	;	\
 	addl %ebx, %eax			;	\
-	DST(movl %ebx, x(%edi)	)	; 
+	DST(movl %ebx, %es:x(%edi))	;
 
 #define ROUND(x) \
+	nop; nop; nop;				\
 	SRC(movl x(%esi), %ebx	)	;	\
 	adcl %ebx, %eax			;	\
-	DST(movl %ebx, x(%edi)	)	;
+	DST(movl %ebx, %es:x(%edi))	;
 
 #define ARGBASE 12
-		
-ENTRY(csum_partial_copy_generic)
+
+ENTRY(csum_partial_copy_generic_to_user)
 	CFI_STARTPROC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %es
+	jmp csum_partial_copy_generic
+#endif
+
+ENTRY(csum_partial_copy_generic_from_user)
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %gs
+	popl_cfi %ds
+#endif
+
+ENTRY(csum_partial_copy_generic)
 	pushl_cfi %ebx
 	CFI_REL_OFFSET ebx, 0
 	pushl_cfi %edi
@@ -461,7 +498,7 @@ ENTRY(csum_partial_copy_generic)
 	subl %ebx, %edi  
 	lea  -1(%esi),%edx
 	andl $-32,%edx
-	lea 3f(%ebx,%ebx), %ebx
+	lea 3f(%ebx,%ebx,2), %ebx
 	testl %esi, %esi 
 	jmp *%ebx
 1:	addl $64,%esi
@@ -482,19 +519,19 @@ ENTRY(csum_partial_copy_generic)
 	jb 5f
 SRC(	movw (%esi), %dx         )
 	leal 2(%esi), %esi
-DST(	movw %dx, (%edi)         )
+DST(	movw %dx, %es:(%edi)     )
 	leal 2(%edi), %edi
 	je 6f
 	shll $16,%edx
 5:
 SRC(	movb (%esi), %dl         )
-DST(	movb %dl, (%edi)         )
+DST(	movb %dl, %es:(%edi)     )
 6:	addl %edx, %eax
 	adcl $0, %eax
 7:
 .section .fixup, "ax"
 6001:	movl	ARGBASE+20(%esp), %ebx	# src_err_ptr	
-	movl $-EFAULT, (%ebx)
+	movl $-EFAULT, %ss:(%ebx)
 	# zero the complete destination (computing the rest is too much work)
 	movl ARGBASE+8(%esp),%edi	# dst
 	movl ARGBASE+12(%esp),%ecx	# len
@@ -502,10 +539,17 @@ DST(	movb %dl, (%edi)         )
 	rep; stosb
 	jmp 7b
 6002:	movl ARGBASE+24(%esp), %ebx	# dst_err_ptr
-	movl $-EFAULT, (%ebx)
+	movl $-EFAULT, %ss:(%ebx)
 	jmp  7b			
 .previous				
 
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	pushl_cfi %ss
+	popl_cfi %ds
+	pushl_cfi %ss
+	popl_cfi %es
+#endif
+
 	popl_cfi %esi
 	CFI_RESTORE esi
 	popl_cfi %edi
@@ -514,7 +558,7 @@ DST(	movb %dl, (%edi)         )
 	CFI_RESTORE ebx
 	ret
 	CFI_ENDPROC
-ENDPROC(csum_partial_copy_generic)
+ENDPROC(csum_partial_copy_generic_to_user)
 				
 #undef ROUND
 #undef ROUND1		
diff --git a/arch/x86/lib/clear_page_64.S b/arch/x86/lib/clear_page_64.S
index f2145cf..cea889d 100644
--- a/arch/x86/lib/clear_page_64.S
+++ b/arch/x86/lib/clear_page_64.S
@@ -11,6 +11,7 @@ ENTRY(clear_page_c)
 	movl $4096/8,%ecx
 	xorl %eax,%eax
 	rep stosq
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(clear_page_c)
@@ -20,6 +21,7 @@ ENTRY(clear_page_c_e)
 	movl $4096,%ecx
 	xorl %eax,%eax
 	rep stosb
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(clear_page_c_e)
@@ -43,6 +45,7 @@ ENTRY(clear_page)
 	leaq	64(%rdi),%rdi
 	jnz	.Lloop
 	nop
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 .Lclear_page_end:
@@ -58,7 +61,7 @@ ENDPROC(clear_page)
 
 #include <asm/cpufeature.h>
 
-	.section .altinstr_replacement,"ax"
+	.section .altinstr_replacement,"a"
 1:	.byte 0xeb					/* jmp <disp8> */
 	.byte (clear_page_c - clear_page) - (2f - 1b)	/* offset */
 2:	.byte 0xeb					/* jmp <disp8> */
diff --git a/arch/x86/lib/cmpxchg16b_emu.S b/arch/x86/lib/cmpxchg16b_emu.S
index 1e572c5..2a162cd 100644
--- a/arch/x86/lib/cmpxchg16b_emu.S
+++ b/arch/x86/lib/cmpxchg16b_emu.S
@@ -53,11 +53,13 @@ this_cpu_cmpxchg16b_emu:
 
 	popf
 	mov $1, %al
+	pax_force_retaddr
 	ret
 
  not_same:
 	popf
 	xor %al,%al
+	pax_force_retaddr
 	ret
 
 CFI_ENDPROC
diff --git a/arch/x86/lib/copy_page_64.S b/arch/x86/lib/copy_page_64.S
index 176cca6..e0d658e 100644
--- a/arch/x86/lib/copy_page_64.S
+++ b/arch/x86/lib/copy_page_64.S
@@ -9,6 +9,7 @@ copy_page_rep:
 	CFI_STARTPROC
 	movl	$4096/8, %ecx
 	rep	movsq
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(copy_page_rep)
@@ -24,8 +25,8 @@ ENTRY(copy_page)
 	CFI_ADJUST_CFA_OFFSET 2*8
 	movq	%rbx,	(%rsp)
 	CFI_REL_OFFSET rbx, 0
-	movq	%r12,	1*8(%rsp)
-	CFI_REL_OFFSET r12, 1*8
+	movq	%r13,	1*8(%rsp)
+	CFI_REL_OFFSET r13, 1*8
 
 	movl	$(4096/64)-5,	%ecx
 	.p2align 4
@@ -38,7 +39,7 @@ ENTRY(copy_page)
 	movq	0x8*4(%rsi), %r9
 	movq	0x8*5(%rsi), %r10
 	movq	0x8*6(%rsi), %r11
-	movq	0x8*7(%rsi), %r12
+	movq	0x8*7(%rsi), %r13
 
 	prefetcht0 5*64(%rsi)
 
@@ -49,7 +50,7 @@ ENTRY(copy_page)
 	movq	%r9,  0x8*4(%rdi)
 	movq	%r10, 0x8*5(%rdi)
 	movq	%r11, 0x8*6(%rdi)
-	movq	%r12, 0x8*7(%rdi)
+	movq	%r13, 0x8*7(%rdi)
 
 	leaq	64 (%rsi), %rsi
 	leaq	64 (%rdi), %rdi
@@ -68,7 +69,7 @@ ENTRY(copy_page)
 	movq	0x8*4(%rsi), %r9
 	movq	0x8*5(%rsi), %r10
 	movq	0x8*6(%rsi), %r11
-	movq	0x8*7(%rsi), %r12
+	movq	0x8*7(%rsi), %r13
 
 	movq	%rax, 0x8*0(%rdi)
 	movq	%rbx, 0x8*1(%rdi)
@@ -77,7 +78,7 @@ ENTRY(copy_page)
 	movq	%r9,  0x8*4(%rdi)
 	movq	%r10, 0x8*5(%rdi)
 	movq	%r11, 0x8*6(%rdi)
-	movq	%r12, 0x8*7(%rdi)
+	movq	%r13, 0x8*7(%rdi)
 
 	leaq	64(%rdi), %rdi
 	leaq	64(%rsi), %rsi
@@ -85,10 +86,11 @@ ENTRY(copy_page)
 
 	movq	(%rsp), %rbx
 	CFI_RESTORE rbx
-	movq	1*8(%rsp), %r12
-	CFI_RESTORE r12
+	movq	1*8(%rsp), %r13
+	CFI_RESTORE r13
 	addq	$2*8, %rsp
 	CFI_ADJUST_CFA_OFFSET -2*8
+	pax_force_retaddr
 	ret
 .Lcopy_page_end:
 	CFI_ENDPROC
@@ -99,7 +101,7 @@ ENDPROC(copy_page)
 
 #include <asm/cpufeature.h>
 
-	.section .altinstr_replacement,"ax"
+	.section .altinstr_replacement,"a"
 1:	.byte 0xeb					/* jmp <disp8> */
 	.byte (copy_page_rep - copy_page) - (2f - 1b)	/* offset */
 2:
diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
index dee945d..a84067b 100644
--- a/arch/x86/lib/copy_user_64.S
+++ b/arch/x86/lib/copy_user_64.S
@@ -18,31 +18,7 @@
 #include <asm/alternative-asm.h>
 #include <asm/asm.h>
 #include <asm/smap.h>
-
-/*
- * By placing feature2 after feature1 in altinstructions section, we logically
- * implement:
- * If CPU has feature2, jmp to alt2 is used
- * else if CPU has feature1, jmp to alt1 is used
- * else jmp to orig is used.
- */
-	.macro ALTERNATIVE_JUMP feature1,feature2,orig,alt1,alt2
-0:
-	.byte 0xe9	/* 32bit jump */
-	.long \orig-1f	/* by default jump to orig */
-1:
-	.section .altinstr_replacement,"ax"
-2:	.byte 0xe9			/* near jump with 32bit immediate */
-	.long \alt1-1b /* offset */   /* or alternatively to alt1 */
-3:	.byte 0xe9			/* near jump with 32bit immediate */
-	.long \alt2-1b /* offset */   /* or alternatively to alt2 */
-	.previous
-
-	.section .altinstructions,"a"
-	altinstruction_entry 0b,2b,\feature1,5,5
-	altinstruction_entry 0b,3b,\feature2,5,5
-	.previous
-	.endm
+#include <asm/pgtable.h>
 
 	.macro ALIGN_DESTINATION
 #ifdef FIX_ALIGNMENT
@@ -70,52 +46,6 @@
 #endif
 	.endm
 
-/* Standard copy_to_user with segment limit checking */
-ENTRY(_copy_to_user)
-	CFI_STARTPROC
-	GET_THREAD_INFO(%rax)
-	movq %rdi,%rcx
-	addq %rdx,%rcx
-	jc bad_to_user
-	cmpq TI_addr_limit(%rax),%rcx
-	ja bad_to_user
-	ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS,	\
-		copy_user_generic_unrolled,copy_user_generic_string,	\
-		copy_user_enhanced_fast_string
-	CFI_ENDPROC
-ENDPROC(_copy_to_user)
-
-/* Standard copy_from_user with segment limit checking */
-ENTRY(_copy_from_user)
-	CFI_STARTPROC
-	GET_THREAD_INFO(%rax)
-	movq %rsi,%rcx
-	addq %rdx,%rcx
-	jc bad_from_user
-	cmpq TI_addr_limit(%rax),%rcx
-	ja bad_from_user
-	ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS,	\
-		copy_user_generic_unrolled,copy_user_generic_string,	\
-		copy_user_enhanced_fast_string
-	CFI_ENDPROC
-ENDPROC(_copy_from_user)
-
-	.section .fixup,"ax"
-	/* must zero dest */
-ENTRY(bad_from_user)
-bad_from_user:
-	CFI_STARTPROC
-	movl %edx,%ecx
-	xorl %eax,%eax
-	rep
-	stosb
-bad_to_user:
-	movl %edx,%eax
-	ret
-	CFI_ENDPROC
-ENDPROC(bad_from_user)
-	.previous
-
 /*
  * copy_user_generic_unrolled - memory copy with exception handling.
  * This version is for CPUs like P4 that don't have efficient micro
@@ -131,6 +61,7 @@ ENDPROC(bad_from_user)
  */
 ENTRY(copy_user_generic_unrolled)
 	CFI_STARTPROC
+	ASM_PAX_OPEN_USERLAND
 	ASM_STAC
 	cmpl $8,%edx
 	jb 20f		/* less then 8 bytes, go to byte copy loop */
@@ -180,6 +111,8 @@ ENTRY(copy_user_generic_unrolled)
 	jnz 21b
 23:	xor %eax,%eax
 	ASM_CLAC
+	ASM_PAX_CLOSE_USERLAND
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
@@ -235,6 +168,7 @@ ENDPROC(copy_user_generic_unrolled)
  */
 ENTRY(copy_user_generic_string)
 	CFI_STARTPROC
+	ASM_PAX_OPEN_USERLAND
 	ASM_STAC
 	cmpl $8,%edx
 	jb 2f		/* less than 8 bytes, go to byte copy loop */
@@ -249,6 +183,8 @@ ENTRY(copy_user_generic_string)
 	movsb
 	xorl %eax,%eax
 	ASM_CLAC
+	ASM_PAX_CLOSE_USERLAND
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
@@ -276,12 +212,15 @@ ENDPROC(copy_user_generic_string)
  */
 ENTRY(copy_user_enhanced_fast_string)
 	CFI_STARTPROC
+	ASM_PAX_OPEN_USERLAND
 	ASM_STAC
 	movl %edx,%ecx
 1:	rep
 	movsb
 	xorl %eax,%eax
 	ASM_CLAC
+	ASM_PAX_CLOSE_USERLAND
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S
index 6a4f43c..c70fb52 100644
--- a/arch/x86/lib/copy_user_nocache_64.S
+++ b/arch/x86/lib/copy_user_nocache_64.S
@@ -8,6 +8,7 @@
 
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
+#include <asm/alternative-asm.h>
 
 #define FIX_ALIGNMENT 1
 
@@ -16,6 +17,7 @@
 #include <asm/thread_info.h>
 #include <asm/asm.h>
 #include <asm/smap.h>
+#include <asm/pgtable.h>
 
 	.macro ALIGN_DESTINATION
 #ifdef FIX_ALIGNMENT
@@ -49,6 +51,16 @@
  */
 ENTRY(__copy_user_nocache)
 	CFI_STARTPROC
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov pax_user_shadow_base,%rcx
+	cmp %rcx,%rsi
+	jae 1f
+	add %rcx,%rsi
+1:
+#endif
+
+	ASM_PAX_OPEN_USERLAND
 	ASM_STAC
 	cmpl $8,%edx
 	jb 20f		/* less then 8 bytes, go to byte copy loop */
@@ -98,7 +110,9 @@ ENTRY(__copy_user_nocache)
 	jnz 21b
 23:	xorl %eax,%eax
 	ASM_CLAC
+	ASM_PAX_CLOSE_USERLAND
 	sfence
+	pax_force_retaddr
 	ret
 
 	.section .fixup,"ax"
diff --git a/arch/x86/lib/csum-copy_64.S b/arch/x86/lib/csum-copy_64.S
index 2419d5f..fe52d0e 100644
--- a/arch/x86/lib/csum-copy_64.S
+++ b/arch/x86/lib/csum-copy_64.S
@@ -9,6 +9,7 @@
 #include <asm/dwarf2.h>
 #include <asm/errno.h>
 #include <asm/asm.h>
+#include <asm/alternative-asm.h>
 
 /*
  * Checksum copy with exception handling.
@@ -56,8 +57,8 @@ ENTRY(csum_partial_copy_generic)
 	CFI_ADJUST_CFA_OFFSET 7*8
 	movq  %rbx, 2*8(%rsp)
 	CFI_REL_OFFSET rbx, 2*8
-	movq  %r12, 3*8(%rsp)
-	CFI_REL_OFFSET r12, 3*8
+	movq  %r15, 3*8(%rsp)
+	CFI_REL_OFFSET r15, 3*8
 	movq  %r14, 4*8(%rsp)
 	CFI_REL_OFFSET r14, 4*8
 	movq  %r13, 5*8(%rsp)
@@ -72,16 +73,16 @@ ENTRY(csum_partial_copy_generic)
 	movl  %edx, %ecx
 
 	xorl  %r9d, %r9d
-	movq  %rcx, %r12
+	movq  %rcx, %r15
 
-	shrq  $6, %r12
+	shrq  $6, %r15
 	jz	.Lhandle_tail       /* < 64 */
 
 	clc
 
 	/* main loop. clear in 64 byte blocks */
 	/* r9: zero, r8: temp2, rbx: temp1, rax: sum, rcx: saved length */
-	/* r11:	temp3, rdx: temp4, r12 loopcnt */
+	/* r11:	temp3, rdx: temp4, r15 loopcnt */
 	/* r10:	temp5, rbp: temp6, r14 temp7, r13 temp8 */
 	.p2align 4
 .Lloop:
@@ -115,7 +116,7 @@ ENTRY(csum_partial_copy_generic)
 	adcq  %r14, %rax
 	adcq  %r13, %rax
 
-	decl %r12d
+	decl %r15d
 
 	dest
 	movq %rbx, (%rsi)
@@ -210,8 +211,8 @@ ENTRY(csum_partial_copy_generic)
 .Lende:
 	movq 2*8(%rsp), %rbx
 	CFI_RESTORE rbx
-	movq 3*8(%rsp), %r12
-	CFI_RESTORE r12
+	movq 3*8(%rsp), %r15
+	CFI_RESTORE r15
 	movq 4*8(%rsp), %r14
 	CFI_RESTORE r14
 	movq 5*8(%rsp), %r13
@@ -220,6 +221,7 @@ ENTRY(csum_partial_copy_generic)
 	CFI_RESTORE rbp
 	addq $7*8, %rsp
 	CFI_ADJUST_CFA_OFFSET -7*8
+	pax_force_retaddr
 	ret
 	CFI_RESTORE_STATE
 
diff --git a/arch/x86/lib/csum-wrappers_64.c b/arch/x86/lib/csum-wrappers_64.c
index 7609e0e..b449b98 100644
--- a/arch/x86/lib/csum-wrappers_64.c
+++ b/arch/x86/lib/csum-wrappers_64.c
@@ -53,10 +53,12 @@ csum_partial_copy_from_user(const void __user *src, void *dst,
 			len -= 2;
 		}
 	}
+	pax_open_userland();
 	stac();
-	isum = csum_partial_copy_generic((__force const void *)src,
+	isum = csum_partial_copy_generic((const void __force_kernel *)____m(src),
 				dst, len, isum, errp, NULL);
 	clac();
+	pax_close_userland();
 	if (unlikely(*errp))
 		goto out_err;
 
@@ -110,10 +112,12 @@ csum_partial_copy_to_user(const void *src, void __user *dst,
 	}
 
 	*errp = 0;
+	pax_open_userland();
 	stac();
-	ret = csum_partial_copy_generic(src, (void __force *)dst,
+	ret = csum_partial_copy_generic(src, (void __force_kernel *)____m(dst),
 					len, isum, NULL, errp);
 	clac();
+	pax_close_userland();
 	return ret;
 }
 EXPORT_SYMBOL(csum_partial_copy_to_user);
diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S
index a451235..1daa956 100644
--- a/arch/x86/lib/getuser.S
+++ b/arch/x86/lib/getuser.S
@@ -33,17 +33,40 @@
 #include <asm/thread_info.h>
 #include <asm/asm.h>
 #include <asm/smap.h>
+#include <asm/segment.h>
+#include <asm/pgtable.h>
+#include <asm/alternative-asm.h>
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __copyuser_seg gs;
+#else
+#define __copyuser_seg
+#endif
 
 	.text
 ENTRY(__get_user_1)
 	CFI_STARTPROC
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
 	ASM_STAC
-1:	movzbl (%_ASM_AX),%edx
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
+#endif
+
+1:	__copyuser_seg movzbl (%_ASM_AX),%edx
 	xor %eax,%eax
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_1)
@@ -51,14 +74,28 @@ ENDPROC(__get_user_1)
 ENTRY(__get_user_2)
 	CFI_STARTPROC
 	add $1,%_ASM_AX
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
 	jc bad_get_user
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
 	ASM_STAC
-2:	movzwl -1(%_ASM_AX),%edx
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
+#endif
+
+2:	__copyuser_seg movzwl -1(%_ASM_AX),%edx
 	xor %eax,%eax
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_2)
@@ -66,14 +103,28 @@ ENDPROC(__get_user_2)
 ENTRY(__get_user_4)
 	CFI_STARTPROC
 	add $3,%_ASM_AX
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
 	jc bad_get_user
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
 	ASM_STAC
-3:	movl -3(%_ASM_AX),%edx
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
+#endif
+
+3:	__copyuser_seg movl -3(%_ASM_AX),%edx
 	xor %eax,%eax
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__get_user_4)
@@ -86,10 +137,20 @@ ENTRY(__get_user_8)
 	GET_THREAD_INFO(%_ASM_DX)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+	mov pax_user_shadow_base,%_ASM_DX
+	cmp %_ASM_DX,%_ASM_AX
+	jae 1234f
+	add %_ASM_DX,%_ASM_AX
+1234:
+#endif
+
 	ASM_STAC
 4:	movq -7(%_ASM_AX),%rdx
 	xor %eax,%eax
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 #else
 	add $7,%_ASM_AX
@@ -98,10 +159,11 @@ ENTRY(__get_user_8)
 	cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
 	jae bad_get_user_8
 	ASM_STAC
-4:	movl -7(%_ASM_AX),%edx
-5:	movl -3(%_ASM_AX),%ecx
+4:	__copyuser_seg movl -7(%_ASM_AX),%edx
+5:	__copyuser_seg movl -3(%_ASM_AX),%ecx
 	xor %eax,%eax
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 #endif
 	CFI_ENDPROC
@@ -113,6 +175,7 @@ bad_get_user:
 	xor %edx,%edx
 	mov $(-EFAULT),%_ASM_AX
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(bad_get_user)
@@ -124,6 +187,7 @@ bad_get_user_8:
 	xor %ecx,%ecx
 	mov $(-EFAULT),%_ASM_AX
 	ASM_CLAC
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(bad_get_user_8)
diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c
index 54fcffe..7be149e 100644
--- a/arch/x86/lib/insn.c
+++ b/arch/x86/lib/insn.c
@@ -20,8 +20,10 @@
 
 #ifdef __KERNEL__
 #include <linux/string.h>
+#include <asm/pgtable_types.h>
 #else
 #include <string.h>
+#define ktla_ktva(addr) addr
 #endif
 #include <asm/inat.h>
 #include <asm/insn.h>
@@ -53,8 +55,8 @@
 void insn_init(struct insn *insn, const void *kaddr, int x86_64)
 {
 	memset(insn, 0, sizeof(*insn));
-	insn->kaddr = kaddr;
-	insn->next_byte = kaddr;
+	insn->kaddr = ktla_ktva(kaddr);
+	insn->next_byte = ktla_ktva(kaddr);
 	insn->x86_64 = x86_64 ? 1 : 0;
 	insn->opnd_bytes = 4;
 	if (x86_64)
diff --git a/arch/x86/lib/iomap_copy_64.S b/arch/x86/lib/iomap_copy_64.S
index 05a95e7..326f2fa 100644
--- a/arch/x86/lib/iomap_copy_64.S
+++ b/arch/x86/lib/iomap_copy_64.S
@@ -17,6 +17,7 @@
 
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
+#include <asm/alternative-asm.h>
 
 /*
  * override generic version in lib/iomap_copy.c
@@ -25,6 +26,7 @@ ENTRY(__iowrite32_copy)
 	CFI_STARTPROC
 	movl %edx,%ecx
 	rep movsd
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(__iowrite32_copy)
diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S
index 56313a3..0db417e 100644
--- a/arch/x86/lib/memcpy_64.S
+++ b/arch/x86/lib/memcpy_64.S
@@ -24,7 +24,7 @@
  * This gets patched over the unrolled variant (below) via the
  * alternative instructions framework:
  */
-	.section .altinstr_replacement, "ax", @progbits
+	.section .altinstr_replacement, "a", @progbits
 .Lmemcpy_c:
 	movq %rdi, %rax
 	movq %rdx, %rcx
@@ -33,6 +33,7 @@
 	rep movsq
 	movl %edx, %ecx
 	rep movsb
+	pax_force_retaddr
 	ret
 .Lmemcpy_e:
 	.previous
@@ -44,11 +45,12 @@
  * This gets patched over the unrolled variant (below) via the
  * alternative instructions framework:
  */
-	.section .altinstr_replacement, "ax", @progbits
+	.section .altinstr_replacement, "a", @progbits
 .Lmemcpy_c_e:
 	movq %rdi, %rax
 	movq %rdx, %rcx
 	rep movsb
+	pax_force_retaddr
 	ret
 .Lmemcpy_e_e:
 	.previous
@@ -136,6 +138,7 @@ ENTRY(memcpy)
 	movq %r9,	1*8(%rdi)
 	movq %r10,	-2*8(%rdi, %rdx)
 	movq %r11,	-1*8(%rdi, %rdx)
+	pax_force_retaddr
 	retq
 	.p2align 4
 .Lless_16bytes:
@@ -148,6 +151,7 @@ ENTRY(memcpy)
 	movq -1*8(%rsi, %rdx),	%r9
 	movq %r8,	0*8(%rdi)
 	movq %r9,	-1*8(%rdi, %rdx)
+	pax_force_retaddr
 	retq
 	.p2align 4
 .Lless_8bytes:
@@ -161,6 +165,7 @@ ENTRY(memcpy)
 	movl -4(%rsi, %rdx), %r8d
 	movl %ecx, (%rdi)
 	movl %r8d, -4(%rdi, %rdx)
+	pax_force_retaddr
 	retq
 	.p2align 4
 .Lless_3bytes:
@@ -179,6 +184,7 @@ ENTRY(memcpy)
 	movb %cl, (%rdi)
 
 .Lend:
+	pax_force_retaddr
 	retq
 	CFI_ENDPROC
 ENDPROC(memcpy)
diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S
index 65268a6..dd1de11 100644
--- a/arch/x86/lib/memmove_64.S
+++ b/arch/x86/lib/memmove_64.S
@@ -202,14 +202,16 @@ ENTRY(memmove)
 	movb (%rsi), %r11b
 	movb %r11b, (%rdi)
 13:
+	pax_force_retaddr
 	retq
 	CFI_ENDPROC
 
-	.section .altinstr_replacement,"ax"
+	.section .altinstr_replacement,"a"
 .Lmemmove_begin_forward_efs:
 	/* Forward moving data. */
 	movq %rdx, %rcx
 	rep movsb
+	pax_force_retaddr
 	retq
 .Lmemmove_end_forward_efs:
 	.previous
diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S
index 2dcb380..2eb79fe 100644
--- a/arch/x86/lib/memset_64.S
+++ b/arch/x86/lib/memset_64.S
@@ -16,7 +16,7 @@
  * 
  * rax   original destination
  */	
-	.section .altinstr_replacement, "ax", @progbits
+	.section .altinstr_replacement, "a", @progbits
 .Lmemset_c:
 	movq %rdi,%r9
 	movq %rdx,%rcx
@@ -30,6 +30,7 @@
 	movl %edx,%ecx
 	rep stosb
 	movq %r9,%rax
+	pax_force_retaddr
 	ret
 .Lmemset_e:
 	.previous
@@ -45,13 +46,14 @@
  *
  * rax   original destination
  */
-	.section .altinstr_replacement, "ax", @progbits
+	.section .altinstr_replacement, "a", @progbits
 .Lmemset_c_e:
 	movq %rdi,%r9
 	movb %sil,%al
 	movq %rdx,%rcx
 	rep stosb
 	movq %r9,%rax
+	pax_force_retaddr
 	ret
 .Lmemset_e_e:
 	.previous
@@ -118,6 +120,7 @@ ENTRY(__memset)
 
 .Lende:
 	movq	%r10,%rax
+	pax_force_retaddr
 	ret
 
 	CFI_RESTORE_STATE
diff --git a/arch/x86/lib/mmx_32.c b/arch/x86/lib/mmx_32.c
index c9f2d9b..e7fd2c0 100644
--- a/arch/x86/lib/mmx_32.c
+++ b/arch/x86/lib/mmx_32.c
@@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
 {
 	void *p;
 	int i;
+	unsigned long cr0;
 
 	if (unlikely(in_interrupt()))
 		return __memcpy(to, from, len);
@@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
 	kernel_fpu_begin();
 
 	__asm__ __volatile__ (
-		"1: prefetch (%0)\n"		/* This set is 28 bytes */
-		"   prefetch 64(%0)\n"
-		"   prefetch 128(%0)\n"
-		"   prefetch 192(%0)\n"
-		"   prefetch 256(%0)\n"
+		"1: prefetch (%1)\n"		/* This set is 28 bytes */
+		"   prefetch 64(%1)\n"
+		"   prefetch 128(%1)\n"
+		"   prefetch 192(%1)\n"
+		"   prefetch 256(%1)\n"
 		"2:  \n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+		"3:  \n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
 			_ASM_EXTABLE(1b, 3b)
-			: : "r" (from));
+			: "=&r" (cr0) : "r" (from) : "ax");
 
 	for ( ; i > 5; i--) {
 		__asm__ __volatile__ (
-		"1:  prefetch 320(%0)\n"
-		"2:  movq (%0), %%mm0\n"
-		"  movq 8(%0), %%mm1\n"
-		"  movq 16(%0), %%mm2\n"
-		"  movq 24(%0), %%mm3\n"
-		"  movq %%mm0, (%1)\n"
-		"  movq %%mm1, 8(%1)\n"
-		"  movq %%mm2, 16(%1)\n"
-		"  movq %%mm3, 24(%1)\n"
-		"  movq 32(%0), %%mm0\n"
-		"  movq 40(%0), %%mm1\n"
-		"  movq 48(%0), %%mm2\n"
-		"  movq 56(%0), %%mm3\n"
-		"  movq %%mm0, 32(%1)\n"
-		"  movq %%mm1, 40(%1)\n"
-		"  movq %%mm2, 48(%1)\n"
-		"  movq %%mm3, 56(%1)\n"
+		"1:  prefetch 320(%1)\n"
+		"2:  movq (%1), %%mm0\n"
+		"  movq 8(%1), %%mm1\n"
+		"  movq 16(%1), %%mm2\n"
+		"  movq 24(%1), %%mm3\n"
+		"  movq %%mm0, (%2)\n"
+		"  movq %%mm1, 8(%2)\n"
+		"  movq %%mm2, 16(%2)\n"
+		"  movq %%mm3, 24(%2)\n"
+		"  movq 32(%1), %%mm0\n"
+		"  movq 40(%1), %%mm1\n"
+		"  movq 48(%1), %%mm2\n"
+		"  movq 56(%1), %%mm3\n"
+		"  movq %%mm0, 32(%2)\n"
+		"  movq %%mm1, 40(%2)\n"
+		"  movq %%mm2, 48(%2)\n"
+		"  movq %%mm3, 56(%2)\n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+		"3:\n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
 			_ASM_EXTABLE(1b, 3b)
-			: : "r" (from), "r" (to) : "memory");
+			: "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
 
 		from += 64;
 		to += 64;
@@ -158,6 +187,7 @@ static void fast_clear_page(void *page)
 static void fast_copy_page(void *to, void *from)
 {
 	int i;
+	unsigned long cr0;
 
 	kernel_fpu_begin();
 
@@ -166,42 +196,70 @@ static void fast_copy_page(void *to, void *from)
 	 * but that is for later. -AV
 	 */
 	__asm__ __volatile__(
-		"1: prefetch (%0)\n"
-		"   prefetch 64(%0)\n"
-		"   prefetch 128(%0)\n"
-		"   prefetch 192(%0)\n"
-		"   prefetch 256(%0)\n"
+		"1: prefetch (%1)\n"
+		"   prefetch 64(%1)\n"
+		"   prefetch 128(%1)\n"
+		"   prefetch 192(%1)\n"
+		"   prefetch 256(%1)\n"
 		"2:  \n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+		"3:  \n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
-			_ASM_EXTABLE(1b, 3b) : : "r" (from));
+			_ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax");
 
 	for (i = 0; i < (4096-320)/64; i++) {
 		__asm__ __volatile__ (
-		"1: prefetch 320(%0)\n"
-		"2: movq (%0), %%mm0\n"
-		"   movntq %%mm0, (%1)\n"
-		"   movq 8(%0), %%mm1\n"
-		"   movntq %%mm1, 8(%1)\n"
-		"   movq 16(%0), %%mm2\n"
-		"   movntq %%mm2, 16(%1)\n"
-		"   movq 24(%0), %%mm3\n"
-		"   movntq %%mm3, 24(%1)\n"
-		"   movq 32(%0), %%mm4\n"
-		"   movntq %%mm4, 32(%1)\n"
-		"   movq 40(%0), %%mm5\n"
-		"   movntq %%mm5, 40(%1)\n"
-		"   movq 48(%0), %%mm6\n"
-		"   movntq %%mm6, 48(%1)\n"
-		"   movq 56(%0), %%mm7\n"
-		"   movntq %%mm7, 56(%1)\n"
+		"1: prefetch 320(%1)\n"
+		"2: movq (%1), %%mm0\n"
+		"   movntq %%mm0, (%2)\n"
+		"   movq 8(%1), %%mm1\n"
+		"   movntq %%mm1, 8(%2)\n"
+		"   movq 16(%1), %%mm2\n"
+		"   movntq %%mm2, 16(%2)\n"
+		"   movq 24(%1), %%mm3\n"
+		"   movntq %%mm3, 24(%2)\n"
+		"   movq 32(%1), %%mm4\n"
+		"   movntq %%mm4, 32(%2)\n"
+		"   movq 40(%1), %%mm5\n"
+		"   movntq %%mm5, 40(%2)\n"
+		"   movq 48(%1), %%mm6\n"
+		"   movntq %%mm6, 48(%2)\n"
+		"   movq 56(%1), %%mm7\n"
+		"   movntq %%mm7, 56(%2)\n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+		"3:\n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
-		_ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory");
+		_ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
 
 		from += 64;
 		to += 64;
@@ -280,47 +338,76 @@ static void fast_clear_page(void *page)
 static void fast_copy_page(void *to, void *from)
 {
 	int i;
+	unsigned long cr0;
 
 	kernel_fpu_begin();
 
 	__asm__ __volatile__ (
-		"1: prefetch (%0)\n"
-		"   prefetch 64(%0)\n"
-		"   prefetch 128(%0)\n"
-		"   prefetch 192(%0)\n"
-		"   prefetch 256(%0)\n"
+		"1: prefetch (%1)\n"
+		"   prefetch 64(%1)\n"
+		"   prefetch 128(%1)\n"
+		"   prefetch 192(%1)\n"
+		"   prefetch 256(%1)\n"
 		"2:  \n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+		"3:  \n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x1AEB, 1b\n"	/* jmp on 26 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
-			_ASM_EXTABLE(1b, 3b) : : "r" (from));
+			_ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax");
 
 	for (i = 0; i < 4096/64; i++) {
 		__asm__ __volatile__ (
-		"1: prefetch 320(%0)\n"
-		"2: movq (%0), %%mm0\n"
-		"   movq 8(%0), %%mm1\n"
-		"   movq 16(%0), %%mm2\n"
-		"   movq 24(%0), %%mm3\n"
-		"   movq %%mm0, (%1)\n"
-		"   movq %%mm1, 8(%1)\n"
-		"   movq %%mm2, 16(%1)\n"
-		"   movq %%mm3, 24(%1)\n"
-		"   movq 32(%0), %%mm0\n"
-		"   movq 40(%0), %%mm1\n"
-		"   movq 48(%0), %%mm2\n"
-		"   movq 56(%0), %%mm3\n"
-		"   movq %%mm0, 32(%1)\n"
-		"   movq %%mm1, 40(%1)\n"
-		"   movq %%mm2, 48(%1)\n"
-		"   movq %%mm3, 56(%1)\n"
+		"1: prefetch 320(%1)\n"
+		"2: movq (%1), %%mm0\n"
+		"   movq 8(%1), %%mm1\n"
+		"   movq 16(%1), %%mm2\n"
+		"   movq 24(%1), %%mm3\n"
+		"   movq %%mm0, (%2)\n"
+		"   movq %%mm1, 8(%2)\n"
+		"   movq %%mm2, 16(%2)\n"
+		"   movq %%mm3, 24(%2)\n"
+		"   movq 32(%1), %%mm0\n"
+		"   movq 40(%1), %%mm1\n"
+		"   movq 48(%1), %%mm2\n"
+		"   movq 56(%1), %%mm3\n"
+		"   movq %%mm0, 32(%2)\n"
+		"   movq %%mm1, 40(%2)\n"
+		"   movq %%mm2, 48(%2)\n"
+		"   movq %%mm3, 56(%2)\n"
 		".section .fixup, \"ax\"\n"
-		"3: movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+		"3:\n"
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %%cr0, %0\n"
+		"   movl %0, %%eax\n"
+		"   andl $0xFFFEFFFF, %%eax\n"
+		"   movl %%eax, %%cr0\n"
+#endif
+
+		"   movw $0x05EB, 1b\n"	/* jmp on 5 bytes */
+
+#ifdef CONFIG_PAX_KERNEXEC
+		"   movl %0, %%cr0\n"
+#endif
+
 		"   jmp 2b\n"
 		".previous\n"
 			_ASM_EXTABLE(1b, 3b)
-			: : "r" (from), "r" (to) : "memory");
+			: "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
 
 		from += 64;
 		to += 64;
diff --git a/arch/x86/lib/msr-reg.S b/arch/x86/lib/msr-reg.S
index f6d13ee..d789440 100644
--- a/arch/x86/lib/msr-reg.S
+++ b/arch/x86/lib/msr-reg.S
@@ -3,6 +3,7 @@
 #include <asm/dwarf2.h>
 #include <asm/asm.h>
 #include <asm/msr.h>
+#include <asm/alternative-asm.h>
 
 #ifdef CONFIG_X86_64
 /*
@@ -37,6 +38,7 @@ ENTRY(\op\()_safe_regs)
 	movl    %edi, 28(%r10)
 	popq_cfi %rbp
 	popq_cfi %rbx
+	pax_force_retaddr
 	ret
 3:
 	CFI_RESTORE_STATE
diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S
index fc6ba17..d4d989d 100644
--- a/arch/x86/lib/putuser.S
+++ b/arch/x86/lib/putuser.S
@@ -16,7 +16,9 @@
 #include <asm/errno.h>
 #include <asm/asm.h>
 #include <asm/smap.h>
-
+#include <asm/segment.h>
+#include <asm/pgtable.h>
+#include <asm/alternative-asm.h>
 
 /*
  * __put_user_X
@@ -30,57 +32,125 @@
  * as they get called from within inline assembly.
  */
 
-#define ENTER	CFI_STARTPROC ; \
-		GET_THREAD_INFO(%_ASM_BX)
-#define EXIT	ASM_CLAC ;	\
-		ret ;		\
+#define ENTER	CFI_STARTPROC
+#define EXIT	ASM_CLAC ;		\
+		pax_force_retaddr ;	\
+		ret ;			\
 		CFI_ENDPROC
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define _DEST %_ASM_CX,%_ASM_BX
+#else
+#define _DEST %_ASM_CX
+#endif
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#define __copyuser_seg gs;
+#else
+#define __copyuser_seg
+#endif
+
 .text
 ENTRY(__put_user_1)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	cmp TI_addr_limit(%_ASM_BX),%_ASM_CX
 	jae bad_put_user
 	ASM_STAC
-1:	movb %al,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+1:	__copyuser_seg movb %al,(_DEST)
 	xor %eax,%eax
 	EXIT
 ENDPROC(__put_user_1)
 
 ENTRY(__put_user_2)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	mov TI_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $1,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
 	jae bad_put_user
 	ASM_STAC
-2:	movw %ax,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+2:	__copyuser_seg movw %ax,(_DEST)
 	xor %eax,%eax
 	EXIT
 ENDPROC(__put_user_2)
 
 ENTRY(__put_user_4)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	mov TI_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $3,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
 	jae bad_put_user
 	ASM_STAC
-3:	movl %eax,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+3:	__copyuser_seg movl %eax,(_DEST)
 	xor %eax,%eax
 	EXIT
 ENDPROC(__put_user_4)
 
 ENTRY(__put_user_8)
 	ENTER
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
+	GET_THREAD_INFO(%_ASM_BX)
 	mov TI_addr_limit(%_ASM_BX),%_ASM_BX
 	sub $7,%_ASM_BX
 	cmp %_ASM_BX,%_ASM_CX
 	jae bad_put_user
 	ASM_STAC
-4:	mov %_ASM_AX,(%_ASM_CX)
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	mov pax_user_shadow_base,%_ASM_BX
+	cmp %_ASM_BX,%_ASM_CX
+	jb 1234f
+	xor %ebx,%ebx
+1234:
+#endif
+
+#endif
+
+4:	__copyuser_seg mov %_ASM_AX,(_DEST)
 #ifdef CONFIG_X86_32
-5:	movl %edx,4(%_ASM_CX)
+5:	__copyuser_seg movl %edx,4(_DEST)
 #endif
 	xor %eax,%eax
 	EXIT
diff --git a/arch/x86/lib/rwlock.S b/arch/x86/lib/rwlock.S
index 1cad221..de671ee 100644
--- a/arch/x86/lib/rwlock.S
+++ b/arch/x86/lib/rwlock.S
@@ -16,13 +16,34 @@ ENTRY(__write_lock_failed)
 	FRAME
 0:	LOCK_PREFIX
 	WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 1:	rep; nop
 	cmpl	$WRITE_LOCK_CMP, (%__lock_ptr)
 	jne	1b
 	LOCK_PREFIX
 	WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 	jnz	0b
 	ENDFRAME
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(__write_lock_failed)
@@ -32,13 +53,34 @@ ENTRY(__read_lock_failed)
 	FRAME
 0:	LOCK_PREFIX
 	READ_LOCK_SIZE(inc) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	READ_LOCK_SIZE(dec) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 1:	rep; nop
 	READ_LOCK_SIZE(cmp) $1, (%__lock_ptr)
 	js	1b
 	LOCK_PREFIX
 	READ_LOCK_SIZE(dec) (%__lock_ptr)
+
+#ifdef CONFIG_PAX_REFCOUNT
+	jno 1234f
+	LOCK_PREFIX
+	READ_LOCK_SIZE(inc) (%__lock_ptr)
+	int $4
+1234:
+	_ASM_EXTABLE(1234b, 1234b)
+#endif
+
 	js	0b
 	ENDFRAME
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 END(__read_lock_failed)
diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S
index 5dff5f0..cadebf4 100644
--- a/arch/x86/lib/rwsem.S
+++ b/arch/x86/lib/rwsem.S
@@ -94,6 +94,7 @@ ENTRY(call_rwsem_down_read_failed)
 	__ASM_SIZE(pop,_cfi) %__ASM_REG(dx)
 	CFI_RESTORE __ASM_REG(dx)
 	restore_common_regs
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_down_read_failed)
@@ -104,6 +105,7 @@ ENTRY(call_rwsem_down_write_failed)
 	movq %rax,%rdi
 	call rwsem_down_write_failed
 	restore_common_regs
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_down_write_failed)
@@ -117,7 +119,8 @@ ENTRY(call_rwsem_wake)
 	movq %rax,%rdi
 	call rwsem_wake
 	restore_common_regs
-1:	ret
+1:	pax_force_retaddr
+	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_wake)
 
@@ -131,6 +134,7 @@ ENTRY(call_rwsem_downgrade_wake)
 	__ASM_SIZE(pop,_cfi) %__ASM_REG(dx)
 	CFI_RESTORE __ASM_REG(dx)
 	restore_common_regs
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 ENDPROC(call_rwsem_downgrade_wake)
diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S
index 92d9fea..b2762c8 100644
--- a/arch/x86/lib/thunk_64.S
+++ b/arch/x86/lib/thunk_64.S
@@ -9,6 +9,7 @@
 #include <asm/dwarf2.h>
 #include <asm/calling.h>
 #include <asm/asm.h>
+#include <asm/alternative-asm.h>
 
 	/* rdi:	arg1 ... normal C conventions. rax is saved/restored. */
 	.macro THUNK name, func, put_ret_addr_in_rdi=0
@@ -16,11 +17,11 @@
 \name:
 	CFI_STARTPROC
 
-	/* this one pushes 9 elems, the next one would be %rIP */
-	SAVE_ARGS
+	/* this one pushes 15+1 elems, the next one would be %rIP */
+	SAVE_ARGS 8
 
 	.if \put_ret_addr_in_rdi
-	movq_cfi_restore 9*8, rdi
+	movq_cfi_restore RIP, rdi
 	.endif
 
 	call \func
@@ -40,9 +41,10 @@
 
 	/* SAVE_ARGS below is used only for the .cfi directives it contains. */
 	CFI_STARTPROC
-	SAVE_ARGS
+	SAVE_ARGS 8
 restore:
-	RESTORE_ARGS
+	RESTORE_ARGS 1,8
+	pax_force_retaddr
 	ret
 	CFI_ENDPROC
 	_ASM_NOKPROBE(restore)
diff --git a/arch/x86/lib/usercopy_32.c b/arch/x86/lib/usercopy_32.c
index e2f5e21..4b22130 100644
--- a/arch/x86/lib/usercopy_32.c
+++ b/arch/x86/lib/usercopy_32.c
@@ -42,11 +42,13 @@ do {									\
 	int __d0;							\
 	might_fault();							\
 	__asm__ __volatile__(						\
+		__COPYUSER_SET_ES					\
 		ASM_STAC "\n"						\
 		"0:	rep; stosl\n"					\
 		"	movl %2,%0\n"					\
 		"1:	rep; stosb\n"					\
 		"2: " ASM_CLAC "\n"					\
+		__COPYUSER_RESTORE_ES					\
 		".section .fixup,\"ax\"\n"				\
 		"3:	lea 0(%2,%0,4),%0\n"				\
 		"	jmp 2b\n"					\
@@ -98,7 +100,7 @@ EXPORT_SYMBOL(__clear_user);
 
 #ifdef CONFIG_X86_INTEL_USERCOPY
 static unsigned long
-__copy_user_intel(void __user *to, const void *from, unsigned long size)
+__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size)
 {
 	int d0, d1;
 	__asm__ __volatile__(
@@ -110,36 +112,36 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size)
 		       "       .align 2,0x90\n"
 		       "3:     movl 0(%4), %%eax\n"
 		       "4:     movl 4(%4), %%edx\n"
-		       "5:     movl %%eax, 0(%3)\n"
-		       "6:     movl %%edx, 4(%3)\n"
+		       "5:     "__copyuser_seg" movl %%eax, 0(%3)\n"
+		       "6:     "__copyuser_seg" movl %%edx, 4(%3)\n"
 		       "7:     movl 8(%4), %%eax\n"
 		       "8:     movl 12(%4),%%edx\n"
-		       "9:     movl %%eax, 8(%3)\n"
-		       "10:    movl %%edx, 12(%3)\n"
+		       "9:     "__copyuser_seg" movl %%eax, 8(%3)\n"
+		       "10:    "__copyuser_seg" movl %%edx, 12(%3)\n"
 		       "11:    movl 16(%4), %%eax\n"
 		       "12:    movl 20(%4), %%edx\n"
-		       "13:    movl %%eax, 16(%3)\n"
-		       "14:    movl %%edx, 20(%3)\n"
+		       "13:    "__copyuser_seg" movl %%eax, 16(%3)\n"
+		       "14:    "__copyuser_seg" movl %%edx, 20(%3)\n"
 		       "15:    movl 24(%4), %%eax\n"
 		       "16:    movl 28(%4), %%edx\n"
-		       "17:    movl %%eax, 24(%3)\n"
-		       "18:    movl %%edx, 28(%3)\n"
+		       "17:    "__copyuser_seg" movl %%eax, 24(%3)\n"
+		       "18:    "__copyuser_seg" movl %%edx, 28(%3)\n"
 		       "19:    movl 32(%4), %%eax\n"
 		       "20:    movl 36(%4), %%edx\n"
-		       "21:    movl %%eax, 32(%3)\n"
-		       "22:    movl %%edx, 36(%3)\n"
+		       "21:    "__copyuser_seg" movl %%eax, 32(%3)\n"
+		       "22:    "__copyuser_seg" movl %%edx, 36(%3)\n"
 		       "23:    movl 40(%4), %%eax\n"
 		       "24:    movl 44(%4), %%edx\n"
-		       "25:    movl %%eax, 40(%3)\n"
-		       "26:    movl %%edx, 44(%3)\n"
+		       "25:    "__copyuser_seg" movl %%eax, 40(%3)\n"
+		       "26:    "__copyuser_seg" movl %%edx, 44(%3)\n"
 		       "27:    movl 48(%4), %%eax\n"
 		       "28:    movl 52(%4), %%edx\n"
-		       "29:    movl %%eax, 48(%3)\n"
-		       "30:    movl %%edx, 52(%3)\n"
+		       "29:    "__copyuser_seg" movl %%eax, 48(%3)\n"
+		       "30:    "__copyuser_seg" movl %%edx, 52(%3)\n"
 		       "31:    movl 56(%4), %%eax\n"
 		       "32:    movl 60(%4), %%edx\n"
-		       "33:    movl %%eax, 56(%3)\n"
-		       "34:    movl %%edx, 60(%3)\n"
+		       "33:    "__copyuser_seg" movl %%eax, 56(%3)\n"
+		       "34:    "__copyuser_seg" movl %%edx, 60(%3)\n"
 		       "       addl $-64, %0\n"
 		       "       addl $64, %4\n"
 		       "       addl $64, %3\n"
@@ -149,10 +151,116 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size)
 		       "       shrl  $2, %0\n"
 		       "       andl  $3, %%eax\n"
 		       "       cld\n"
+		       __COPYUSER_SET_ES
 		       "99:    rep; movsl\n"
 		       "36:    movl %%eax, %0\n"
 		       "37:    rep; movsb\n"
 		       "100:\n"
+		       __COPYUSER_RESTORE_ES
+		       ".section .fixup,\"ax\"\n"
+		       "101:   lea 0(%%eax,%0,4),%0\n"
+		       "       jmp 100b\n"
+		       ".previous\n"
+		       _ASM_EXTABLE(1b,100b)
+		       _ASM_EXTABLE(2b,100b)
+		       _ASM_EXTABLE(3b,100b)
+		       _ASM_EXTABLE(4b,100b)
+		       _ASM_EXTABLE(5b,100b)
+		       _ASM_EXTABLE(6b,100b)
+		       _ASM_EXTABLE(7b,100b)
+		       _ASM_EXTABLE(8b,100b)
+		       _ASM_EXTABLE(9b,100b)
+		       _ASM_EXTABLE(10b,100b)
+		       _ASM_EXTABLE(11b,100b)
+		       _ASM_EXTABLE(12b,100b)
+		       _ASM_EXTABLE(13b,100b)
+		       _ASM_EXTABLE(14b,100b)
+		       _ASM_EXTABLE(15b,100b)
+		       _ASM_EXTABLE(16b,100b)
+		       _ASM_EXTABLE(17b,100b)
+		       _ASM_EXTABLE(18b,100b)
+		       _ASM_EXTABLE(19b,100b)
+		       _ASM_EXTABLE(20b,100b)
+		       _ASM_EXTABLE(21b,100b)
+		       _ASM_EXTABLE(22b,100b)
+		       _ASM_EXTABLE(23b,100b)
+		       _ASM_EXTABLE(24b,100b)
+		       _ASM_EXTABLE(25b,100b)
+		       _ASM_EXTABLE(26b,100b)
+		       _ASM_EXTABLE(27b,100b)
+		       _ASM_EXTABLE(28b,100b)
+		       _ASM_EXTABLE(29b,100b)
+		       _ASM_EXTABLE(30b,100b)
+		       _ASM_EXTABLE(31b,100b)
+		       _ASM_EXTABLE(32b,100b)
+		       _ASM_EXTABLE(33b,100b)
+		       _ASM_EXTABLE(34b,100b)
+		       _ASM_EXTABLE(35b,100b)
+		       _ASM_EXTABLE(36b,100b)
+		       _ASM_EXTABLE(37b,100b)
+		       _ASM_EXTABLE(99b,101b)
+		       : "=&c"(size), "=&D" (d0), "=&S" (d1)
+		       :  "1"(to), "2"(from), "0"(size)
+		       : "eax", "edx", "memory");
+	return size;
+}
+
+static unsigned long
+__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size)
+{
+	int d0, d1;
+	__asm__ __volatile__(
+		       "       .align 2,0x90\n"
+		       "1:     "__copyuser_seg" movl 32(%4), %%eax\n"
+		       "       cmpl $67, %0\n"
+		       "       jbe 3f\n"
+		       "2:     "__copyuser_seg" movl 64(%4), %%eax\n"
+		       "       .align 2,0x90\n"
+		       "3:     "__copyuser_seg" movl 0(%4), %%eax\n"
+		       "4:     "__copyuser_seg" movl 4(%4), %%edx\n"
+		       "5:     movl %%eax, 0(%3)\n"
+		       "6:     movl %%edx, 4(%3)\n"
+		       "7:     "__copyuser_seg" movl 8(%4), %%eax\n"
+		       "8:     "__copyuser_seg" movl 12(%4),%%edx\n"
+		       "9:     movl %%eax, 8(%3)\n"
+		       "10:    movl %%edx, 12(%3)\n"
+		       "11:    "__copyuser_seg" movl 16(%4), %%eax\n"
+		       "12:    "__copyuser_seg" movl 20(%4), %%edx\n"
+		       "13:    movl %%eax, 16(%3)\n"
+		       "14:    movl %%edx, 20(%3)\n"
+		       "15:    "__copyuser_seg" movl 24(%4), %%eax\n"
+		       "16:    "__copyuser_seg" movl 28(%4), %%edx\n"
+		       "17:    movl %%eax, 24(%3)\n"
+		       "18:    movl %%edx, 28(%3)\n"
+		       "19:    "__copyuser_seg" movl 32(%4), %%eax\n"
+		       "20:    "__copyuser_seg" movl 36(%4), %%edx\n"
+		       "21:    movl %%eax, 32(%3)\n"
+		       "22:    movl %%edx, 36(%3)\n"
+		       "23:    "__copyuser_seg" movl 40(%4), %%eax\n"
+		       "24:    "__copyuser_seg" movl 44(%4), %%edx\n"
+		       "25:    movl %%eax, 40(%3)\n"
+		       "26:    movl %%edx, 44(%3)\n"
+		       "27:    "__copyuser_seg" movl 48(%4), %%eax\n"
+		       "28:    "__copyuser_seg" movl 52(%4), %%edx\n"
+		       "29:    movl %%eax, 48(%3)\n"
+		       "30:    movl %%edx, 52(%3)\n"
+		       "31:    "__copyuser_seg" movl 56(%4), %%eax\n"
+		       "32:    "__copyuser_seg" movl 60(%4), %%edx\n"
+		       "33:    movl %%eax, 56(%3)\n"
+		       "34:    movl %%edx, 60(%3)\n"
+		       "       addl $-64, %0\n"
+		       "       addl $64, %4\n"
+		       "       addl $64, %3\n"
+		       "       cmpl $63, %0\n"
+		       "       ja  1b\n"
+		       "35:    movl  %0, %%eax\n"
+		       "       shrl  $2, %0\n"
+		       "       andl  $3, %%eax\n"
+		       "       cld\n"
+		       "99:    rep; "__copyuser_seg" movsl\n"
+		       "36:    movl %%eax, %0\n"
+		       "37:    rep; "__copyuser_seg" movsb\n"
+		       "100:\n"
 		       ".section .fixup,\"ax\"\n"
 		       "101:   lea 0(%%eax,%0,4),%0\n"
 		       "       jmp 100b\n"
@@ -207,41 +315,41 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size)
 	int d0, d1;
 	__asm__ __volatile__(
 		       "        .align 2,0x90\n"
-		       "0:      movl 32(%4), %%eax\n"
+		       "0:      "__copyuser_seg" movl 32(%4), %%eax\n"
 		       "        cmpl $67, %0\n"
 		       "        jbe 2f\n"
-		       "1:      movl 64(%4), %%eax\n"
+		       "1:      "__copyuser_seg" movl 64(%4), %%eax\n"
 		       "        .align 2,0x90\n"
-		       "2:      movl 0(%4), %%eax\n"
-		       "21:     movl 4(%4), %%edx\n"
+		       "2:      "__copyuser_seg" movl 0(%4), %%eax\n"
+		       "21:     "__copyuser_seg" movl 4(%4), %%edx\n"
 		       "        movl %%eax, 0(%3)\n"
 		       "        movl %%edx, 4(%3)\n"
-		       "3:      movl 8(%4), %%eax\n"
-		       "31:     movl 12(%4),%%edx\n"
+		       "3:      "__copyuser_seg" movl 8(%4), %%eax\n"
+		       "31:     "__copyuser_seg" movl 12(%4),%%edx\n"
 		       "        movl %%eax, 8(%3)\n"
 		       "        movl %%edx, 12(%3)\n"
-		       "4:      movl 16(%4), %%eax\n"
-		       "41:     movl 20(%4), %%edx\n"
+		       "4:      "__copyuser_seg" movl 16(%4), %%eax\n"
+		       "41:     "__copyuser_seg" movl 20(%4), %%edx\n"
 		       "        movl %%eax, 16(%3)\n"
 		       "        movl %%edx, 20(%3)\n"
-		       "10:     movl 24(%4), %%eax\n"
-		       "51:     movl 28(%4), %%edx\n"
+		       "10:     "__copyuser_seg" movl 24(%4), %%eax\n"
+		       "51:     "__copyuser_seg" movl 28(%4), %%edx\n"
 		       "        movl %%eax, 24(%3)\n"
 		       "        movl %%edx, 28(%3)\n"
-		       "11:     movl 32(%4), %%eax\n"
-		       "61:     movl 36(%4), %%edx\n"
+		       "11:     "__copyuser_seg" movl 32(%4), %%eax\n"
+		       "61:     "__copyuser_seg" movl 36(%4), %%edx\n"
 		       "        movl %%eax, 32(%3)\n"
 		       "        movl %%edx, 36(%3)\n"
-		       "12:     movl 40(%4), %%eax\n"
-		       "71:     movl 44(%4), %%edx\n"
+		       "12:     "__copyuser_seg" movl 40(%4), %%eax\n"
+		       "71:     "__copyuser_seg" movl 44(%4), %%edx\n"
 		       "        movl %%eax, 40(%3)\n"
 		       "        movl %%edx, 44(%3)\n"
-		       "13:     movl 48(%4), %%eax\n"
-		       "81:     movl 52(%4), %%edx\n"
+		       "13:     "__copyuser_seg" movl 48(%4), %%eax\n"
+		       "81:     "__copyuser_seg" movl 52(%4), %%edx\n"
 		       "        movl %%eax, 48(%3)\n"
 		       "        movl %%edx, 52(%3)\n"
-		       "14:     movl 56(%4), %%eax\n"
-		       "91:     movl 60(%4), %%edx\n"
+		       "14:     "__copyuser_seg" movl 56(%4), %%eax\n"
+		       "91:     "__copyuser_seg" movl 60(%4), %%edx\n"
 		       "        movl %%eax, 56(%3)\n"
 		       "        movl %%edx, 60(%3)\n"
 		       "        addl $-64, %0\n"
@@ -253,9 +361,9 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size)
 		       "        shrl  $2, %0\n"
 		       "        andl $3, %%eax\n"
 		       "        cld\n"
-		       "6:      rep; movsl\n"
+		       "6:      rep; "__copyuser_seg" movsl\n"
 		       "        movl %%eax,%0\n"
-		       "7:      rep; movsb\n"
+		       "7:      rep; "__copyuser_seg" movsb\n"
 		       "8:\n"
 		       ".section .fixup,\"ax\"\n"
 		       "9:      lea 0(%%eax,%0,4),%0\n"
@@ -305,41 +413,41 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to,
 
 	__asm__ __volatile__(
 	       "        .align 2,0x90\n"
-	       "0:      movl 32(%4), %%eax\n"
+	       "0:      "__copyuser_seg" movl 32(%4), %%eax\n"
 	       "        cmpl $67, %0\n"
 	       "        jbe 2f\n"
-	       "1:      movl 64(%4), %%eax\n"
+	       "1:      "__copyuser_seg" movl 64(%4), %%eax\n"
 	       "        .align 2,0x90\n"
-	       "2:      movl 0(%4), %%eax\n"
-	       "21:     movl 4(%4), %%edx\n"
+	       "2:      "__copyuser_seg" movl 0(%4), %%eax\n"
+	       "21:     "__copyuser_seg" movl 4(%4), %%edx\n"
 	       "        movnti %%eax, 0(%3)\n"
 	       "        movnti %%edx, 4(%3)\n"
-	       "3:      movl 8(%4), %%eax\n"
-	       "31:     movl 12(%4),%%edx\n"
+	       "3:      "__copyuser_seg" movl 8(%4), %%eax\n"
+	       "31:     "__copyuser_seg" movl 12(%4),%%edx\n"
 	       "        movnti %%eax, 8(%3)\n"
 	       "        movnti %%edx, 12(%3)\n"
-	       "4:      movl 16(%4), %%eax\n"
-	       "41:     movl 20(%4), %%edx\n"
+	       "4:      "__copyuser_seg" movl 16(%4), %%eax\n"
+	       "41:     "__copyuser_seg" movl 20(%4), %%edx\n"
 	       "        movnti %%eax, 16(%3)\n"
 	       "        movnti %%edx, 20(%3)\n"
-	       "10:     movl 24(%4), %%eax\n"
-	       "51:     movl 28(%4), %%edx\n"
+	       "10:     "__copyuser_seg" movl 24(%4), %%eax\n"
+	       "51:     "__copyuser_seg" movl 28(%4), %%edx\n"
 	       "        movnti %%eax, 24(%3)\n"
 	       "        movnti %%edx, 28(%3)\n"
-	       "11:     movl 32(%4), %%eax\n"
-	       "61:     movl 36(%4), %%edx\n"
+	       "11:     "__copyuser_seg" movl 32(%4), %%eax\n"
+	       "61:     "__copyuser_seg" movl 36(%4), %%edx\n"
 	       "        movnti %%eax, 32(%3)\n"
 	       "        movnti %%edx, 36(%3)\n"
-	       "12:     movl 40(%4), %%eax\n"
-	       "71:     movl 44(%4), %%edx\n"
+	       "12:     "__copyuser_seg" movl 40(%4), %%eax\n"
+	       "71:     "__copyuser_seg" movl 44(%4), %%edx\n"
 	       "        movnti %%eax, 40(%3)\n"
 	       "        movnti %%edx, 44(%3)\n"
-	       "13:     movl 48(%4), %%eax\n"
-	       "81:     movl 52(%4), %%edx\n"
+	       "13:     "__copyuser_seg" movl 48(%4), %%eax\n"
+	       "81:     "__copyuser_seg" movl 52(%4), %%edx\n"
 	       "        movnti %%eax, 48(%3)\n"
 	       "        movnti %%edx, 52(%3)\n"
-	       "14:     movl 56(%4), %%eax\n"
-	       "91:     movl 60(%4), %%edx\n"
+	       "14:     "__copyuser_seg" movl 56(%4), %%eax\n"
+	       "91:     "__copyuser_seg" movl 60(%4), %%edx\n"
 	       "        movnti %%eax, 56(%3)\n"
 	       "        movnti %%edx, 60(%3)\n"
 	       "        addl $-64, %0\n"
@@ -352,9 +460,9 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to,
 	       "        shrl  $2, %0\n"
 	       "        andl $3, %%eax\n"
 	       "        cld\n"
-	       "6:      rep; movsl\n"
+	       "6:      rep; "__copyuser_seg" movsl\n"
 	       "        movl %%eax,%0\n"
-	       "7:      rep; movsb\n"
+	       "7:      rep; "__copyuser_seg" movsb\n"
 	       "8:\n"
 	       ".section .fixup,\"ax\"\n"
 	       "9:      lea 0(%%eax,%0,4),%0\n"
@@ -399,41 +507,41 @@ static unsigned long __copy_user_intel_nocache(void *to,
 
 	__asm__ __volatile__(
 	       "        .align 2,0x90\n"
-	       "0:      movl 32(%4), %%eax\n"
+	       "0:      "__copyuser_seg" movl 32(%4), %%eax\n"
 	       "        cmpl $67, %0\n"
 	       "        jbe 2f\n"
-	       "1:      movl 64(%4), %%eax\n"
+	       "1:      "__copyuser_seg" movl 64(%4), %%eax\n"
 	       "        .align 2,0x90\n"
-	       "2:      movl 0(%4), %%eax\n"
-	       "21:     movl 4(%4), %%edx\n"
+	       "2:      "__copyuser_seg" movl 0(%4), %%eax\n"
+	       "21:     "__copyuser_seg" movl 4(%4), %%edx\n"
 	       "        movnti %%eax, 0(%3)\n"
 	       "        movnti %%edx, 4(%3)\n"
-	       "3:      movl 8(%4), %%eax\n"
-	       "31:     movl 12(%4),%%edx\n"
+	       "3:      "__copyuser_seg" movl 8(%4), %%eax\n"
+	       "31:     "__copyuser_seg" movl 12(%4),%%edx\n"
 	       "        movnti %%eax, 8(%3)\n"
 	       "        movnti %%edx, 12(%3)\n"
-	       "4:      movl 16(%4), %%eax\n"
-	       "41:     movl 20(%4), %%edx\n"
+	       "4:      "__copyuser_seg" movl 16(%4), %%eax\n"
+	       "41:     "__copyuser_seg" movl 20(%4), %%edx\n"
 	       "        movnti %%eax, 16(%3)\n"
 	       "        movnti %%edx, 20(%3)\n"
-	       "10:     movl 24(%4), %%eax\n"
-	       "51:     movl 28(%4), %%edx\n"
+	       "10:     "__copyuser_seg" movl 24(%4), %%eax\n"
+	       "51:     "__copyuser_seg" movl 28(%4), %%edx\n"
 	       "        movnti %%eax, 24(%3)\n"
 	       "        movnti %%edx, 28(%3)\n"
-	       "11:     movl 32(%4), %%eax\n"
-	       "61:     movl 36(%4), %%edx\n"
+	       "11:     "__copyuser_seg" movl 32(%4), %%eax\n"
+	       "61:     "__copyuser_seg" movl 36(%4), %%edx\n"
 	       "        movnti %%eax, 32(%3)\n"
 	       "        movnti %%edx, 36(%3)\n"
-	       "12:     movl 40(%4), %%eax\n"
-	       "71:     movl 44(%4), %%edx\n"
+	       "12:     "__copyuser_seg" movl 40(%4), %%eax\n"
+	       "71:     "__copyuser_seg" movl 44(%4), %%edx\n"
 	       "        movnti %%eax, 40(%3)\n"
 	       "        movnti %%edx, 44(%3)\n"
-	       "13:     movl 48(%4), %%eax\n"
-	       "81:     movl 52(%4), %%edx\n"
+	       "13:     "__copyuser_seg" movl 48(%4), %%eax\n"
+	       "81:     "__copyuser_seg" movl 52(%4), %%edx\n"
 	       "        movnti %%eax, 48(%3)\n"
 	       "        movnti %%edx, 52(%3)\n"
-	       "14:     movl 56(%4), %%eax\n"
-	       "91:     movl 60(%4), %%edx\n"
+	       "14:     "__copyuser_seg" movl 56(%4), %%eax\n"
+	       "91:     "__copyuser_seg" movl 60(%4), %%edx\n"
 	       "        movnti %%eax, 56(%3)\n"
 	       "        movnti %%edx, 60(%3)\n"
 	       "        addl $-64, %0\n"
@@ -446,9 +554,9 @@ static unsigned long __copy_user_intel_nocache(void *to,
 	       "        shrl  $2, %0\n"
 	       "        andl $3, %%eax\n"
 	       "        cld\n"
-	       "6:      rep; movsl\n"
+	       "6:      rep; "__copyuser_seg" movsl\n"
 	       "        movl %%eax,%0\n"
-	       "7:      rep; movsb\n"
+	       "7:      rep; "__copyuser_seg" movsb\n"
 	       "8:\n"
 	       ".section .fixup,\"ax\"\n"
 	       "9:      lea 0(%%eax,%0,4),%0\n"
@@ -488,32 +596,36 @@ static unsigned long __copy_user_intel_nocache(void *to,
  */
 unsigned long __copy_user_zeroing_intel(void *to, const void __user *from,
 					unsigned long size);
-unsigned long __copy_user_intel(void __user *to, const void *from,
+unsigned long __generic_copy_to_user_intel(void __user *to, const void *from,
+					unsigned long size);
+unsigned long __generic_copy_from_user_intel(void *to, const void __user *from,
 					unsigned long size);
 unsigned long __copy_user_zeroing_intel_nocache(void *to,
 				const void __user *from, unsigned long size);
 #endif /* CONFIG_X86_INTEL_USERCOPY */
 
 /* Generic arbitrary sized copy.  */
-#define __copy_user(to, from, size)					\
+#define __copy_user(to, from, size, prefix, set, restore)		\
 do {									\
 	int __d0, __d1, __d2;						\
 	__asm__ __volatile__(						\
+		set							\
 		"	cmp  $7,%0\n"					\
 		"	jbe  1f\n"					\
 		"	movl %1,%0\n"					\
 		"	negl %0\n"					\
 		"	andl $7,%0\n"					\
 		"	subl %0,%3\n"					\
-		"4:	rep; movsb\n"					\
+		"4:	rep; "prefix"movsb\n"				\
 		"	movl %3,%0\n"					\
 		"	shrl $2,%0\n"					\
 		"	andl $3,%3\n"					\
 		"	.align 2,0x90\n"				\
-		"0:	rep; movsl\n"					\
+		"0:	rep; "prefix"movsl\n"				\
 		"	movl %3,%0\n"					\
-		"1:	rep; movsb\n"					\
+		"1:	rep; "prefix"movsb\n"				\
 		"2:\n"							\
+		restore							\
 		".section .fixup,\"ax\"\n"				\
 		"5:	addl %3,%0\n"					\
 		"	jmp 2b\n"					\
@@ -538,14 +650,14 @@ do {									\
 		"	negl %0\n"					\
 		"	andl $7,%0\n"					\
 		"	subl %0,%3\n"					\
-		"4:	rep; movsb\n"					\
+		"4:	rep; "__copyuser_seg"movsb\n"			\
 		"	movl %3,%0\n"					\
 		"	shrl $2,%0\n"					\
 		"	andl $3,%3\n"					\
 		"	.align 2,0x90\n"				\
-		"0:	rep; movsl\n"					\
+		"0:	rep; "__copyuser_seg"movsl\n"			\
 		"	movl %3,%0\n"					\
-		"1:	rep; movsb\n"					\
+		"1:	rep; "__copyuser_seg"movsb\n"			\
 		"2:\n"							\
 		".section .fixup,\"ax\"\n"				\
 		"5:	addl %3,%0\n"					\
@@ -572,9 +684,9 @@ unsigned long __copy_to_user_ll(void __user *to, const void *from,
 {
 	stac();
 	if (movsl_is_ok(to, from, n))
-		__copy_user(to, from, n);
+		__copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES);
 	else
-		n = __copy_user_intel(to, from, n);
+		n = __generic_copy_to_user_intel(to, from, n);
 	clac();
 	return n;
 }
@@ -598,10 +710,9 @@ unsigned long __copy_from_user_ll_nozero(void *to, const void __user *from,
 {
 	stac();
 	if (movsl_is_ok(to, from, n))
-		__copy_user(to, from, n);
+		__copy_user(to, from, n, __copyuser_seg, "", "");
 	else
-		n = __copy_user_intel((void __user *)to,
-				      (const void *)from, n);
+		n = __generic_copy_from_user_intel(to, from, n);
 	clac();
 	return n;
 }
@@ -632,58 +743,38 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr
 	if (n > 64 && cpu_has_xmm2)
 		n = __copy_user_intel_nocache(to, from, n);
 	else
-		__copy_user(to, from, n);
+		__copy_user(to, from, n, __copyuser_seg, "", "");
 #else
-	__copy_user(to, from, n);
+	__copy_user(to, from, n, __copyuser_seg, "", "");
 #endif
 	clac();
 	return n;
 }
 EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero);
 
-/**
- * copy_to_user: - Copy a block of data into user space.
- * @to:   Destination address, in user space.
- * @from: Source address, in kernel space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from kernel space to user space.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- */
-unsigned long _copy_to_user(void __user *to, const void *from, unsigned n)
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+void __set_fs(mm_segment_t x)
 {
-	if (access_ok(VERIFY_WRITE, to, n))
-		n = __copy_to_user(to, from, n);
-	return n;
+	switch (x.seg) {
+	case 0:
+		loadsegment(gs, 0);
+		break;
+	case TASK_SIZE_MAX:
+		loadsegment(gs, __USER_DS);
+		break;
+	case -1UL:
+		loadsegment(gs, __KERNEL_DS);
+		break;
+	default:
+		BUG();
+	}
 }
-EXPORT_SYMBOL(_copy_to_user);
+EXPORT_SYMBOL(__set_fs);
 
-/**
- * copy_from_user: - Copy a block of data from user space.
- * @to:   Destination address, in kernel space.
- * @from: Source address, in user space.
- * @n:    Number of bytes to copy.
- *
- * Context: User context only.  This function may sleep.
- *
- * Copy data from user space to kernel space.
- *
- * Returns number of bytes that could not be copied.
- * On success, this will be zero.
- *
- * If some data could not be copied, this function will pad the copied
- * data to the requested size using zero bytes.
- */
-unsigned long _copy_from_user(void *to, const void __user *from, unsigned n)
+void set_fs(mm_segment_t x)
 {
-	if (access_ok(VERIFY_READ, from, n))
-		n = __copy_from_user(to, from, n);
-	else
-		memset(to, 0, n);
-	return n;
+	current_thread_info()->addr_limit = x;
+	__set_fs(x);
 }
-EXPORT_SYMBOL(_copy_from_user);
+EXPORT_SYMBOL(set_fs);
+#endif
diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c
index c905e89..01ab928 100644
--- a/arch/x86/lib/usercopy_64.c
+++ b/arch/x86/lib/usercopy_64.c
@@ -18,6 +18,7 @@ unsigned long __clear_user(void __user *addr, unsigned long size)
 	might_fault();
 	/* no memory constraint because it doesn't change any memory gcc knows
 	   about */
+	pax_open_userland();
 	stac();
 	asm volatile(
 		"	testq  %[size8],%[size8]\n"
@@ -39,9 +40,10 @@ unsigned long __clear_user(void __user *addr, unsigned long size)
 		_ASM_EXTABLE(0b,3b)
 		_ASM_EXTABLE(1b,2b)
 		: [size8] "=&c"(size), [dst] "=&D" (__d0)
-		: [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(addr),
+		: [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(____m(addr)),
 		  [zero] "r" (0UL), [eight] "r" (8UL));
 	clac();
+	pax_close_userland();
 	return size;
 }
 EXPORT_SYMBOL(__clear_user);
@@ -54,12 +56,11 @@ unsigned long clear_user(void __user *to, unsigned long n)
 }
 EXPORT_SYMBOL(clear_user);
 
-unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len)
+unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long len)
 {
-	if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) { 
-		return copy_user_generic((__force void *)to, (__force void *)from, len);
-	} 
-	return len;		
+	if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len))
+		return copy_user_generic((void __force_kernel *)____m(to), (void __force_kernel *)____m(from), len);
+	return len;
 }
 EXPORT_SYMBOL(copy_in_user);
 
@@ -69,11 +70,13 @@ EXPORT_SYMBOL(copy_in_user);
  * it is not necessary to optimize tail handling.
  */
 __visible unsigned long
-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest)
+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest)
 {
 	char c;
 	unsigned zero_len;
 
+	clac();
+	pax_close_userland();
 	for (; len; --len, to++) {
 		if (__get_user_nocheck(c, from++, sizeof(char)))
 			break;
@@ -84,6 +87,5 @@ copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest)
 	for (c = 0, zero_len = len; zerorest && zero_len; --zero_len)
 		if (__put_user_nocheck(c, to++, sizeof(char)))
 			break;
-	clac();
 	return len;
 }
diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile
index 6a19ad9..1c48f9a 100644
--- a/arch/x86/mm/Makefile
+++ b/arch/x86/mm/Makefile
@@ -30,3 +30,7 @@ obj-$(CONFIG_ACPI_NUMA)		+= srat.o
 obj-$(CONFIG_NUMA_EMU)		+= numa_emulation.o
 
 obj-$(CONFIG_MEMTEST)		+= memtest.o
+
+quote:="
+obj-$(CONFIG_X86_64)		+= uderef_64.o
+CFLAGS_uderef_64.o		:= $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS))
diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
index 903ec1e..c4166b2 100644
--- a/arch/x86/mm/extable.c
+++ b/arch/x86/mm/extable.c
@@ -6,12 +6,24 @@
 static inline unsigned long
 ex_insn_addr(const struct exception_table_entry *x)
 {
-	return (unsigned long)&x->insn + x->insn;
+	unsigned long reloc = 0;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	reloc = ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
+	return (unsigned long)&x->insn + x->insn + reloc;
 }
 static inline unsigned long
 ex_fixup_addr(const struct exception_table_entry *x)
 {
-	return (unsigned long)&x->fixup + x->fixup;
+	unsigned long reloc = 0;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	reloc = ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
+	return (unsigned long)&x->fixup + x->fixup + reloc;
 }
 
 int fixup_exception(struct pt_regs *regs)
@@ -20,7 +32,7 @@ int fixup_exception(struct pt_regs *regs)
 	unsigned long new_ip;
 
 #ifdef CONFIG_PNPBIOS
-	if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) {
+	if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) {
 		extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp;
 		extern u32 pnp_bios_is_utter_crap;
 		pnp_bios_is_utter_crap = 1;
@@ -145,6 +157,13 @@ void sort_extable(struct exception_table_entry *start,
 		i += 4;
 		p->fixup -= i;
 		i += 4;
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		BUILD_BUG_ON(!IS_ENABLED(CONFIG_BUILDTIME_EXTABLE_SORT));
+		p->insn -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+		p->fixup -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
+#endif
+
 	}
 }
 
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 3664279..c6a7830 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -14,12 +14,19 @@
 #include <linux/hugetlb.h>		/* hstate_index_to_shift	*/
 #include <linux/prefetch.h>		/* prefetchw			*/
 #include <linux/context_tracking.h>	/* exception_enter(), ...	*/
+#include <linux/unistd.h>
+#include <linux/compiler.h>
 
 #include <asm/traps.h>			/* dotraplinkage, ...		*/
 #include <asm/pgalloc.h>		/* pgd_*(), ...			*/
 #include <asm/kmemcheck.h>		/* kmemcheck_*(), ...		*/
 #include <asm/fixmap.h>			/* VSYSCALL_ADDR		*/
 #include <asm/vsyscall.h>		/* emulate_vsyscall		*/
+#include <asm/tlbflush.h>
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+#include <asm/stacktrace.h>
+#endif
 
 #define CREATE_TRACE_POINTS
 #include <asm/trace/exceptions.h>
@@ -60,7 +67,7 @@ static nokprobe_inline int kprobes_fault(struct pt_regs *regs)
 	int ret = 0;
 
 	/* kprobe_running() needs smp_processor_id() */
-	if (kprobes_built_in() && !user_mode_vm(regs)) {
+	if (kprobes_built_in() && !user_mode(regs)) {
 		preempt_disable();
 		if (kprobe_running() && kprobe_fault_handler(regs, 14))
 			ret = 1;
@@ -121,7 +128,10 @@ check_prefetch_opcode(struct pt_regs *regs, unsigned char *instr,
 		return !instr_lo || (instr_lo>>1) == 1;
 	case 0x00:
 		/* Prefetch instruction is 0x0F0D or 0x0F18 */
-		if (probe_kernel_address(instr, opcode))
+		if (user_mode(regs)) {
+			if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1))
+				return 0;
+		} else if (probe_kernel_address(instr, opcode))
 			return 0;
 
 		*prefetch = (instr_lo == 0xF) &&
@@ -155,7 +165,10 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr)
 	while (instr < max_instr) {
 		unsigned char opcode;
 
-		if (probe_kernel_address(instr, opcode))
+		if (user_mode(regs)) {
+			if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1))
+				break;
+		} else if (probe_kernel_address(instr, opcode))
 			break;
 
 		instr++;
@@ -186,6 +199,34 @@ force_sig_info_fault(int si_signo, int si_code, unsigned long address,
 	force_sig_info(si_signo, &info, tsk);
 }
 
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address);
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+static int pax_handle_fetch_fault(struct pt_regs *regs);
+#endif
+
+#ifdef CONFIG_PAX_PAGEEXEC
+static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address)
+{
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+
+	pgd = pgd_offset(mm, address);
+	if (!pgd_present(*pgd))
+		return NULL;
+	pud = pud_offset(pgd, address);
+	if (!pud_present(*pud))
+		return NULL;
+	pmd = pmd_offset(pud, address);
+	if (!pmd_present(*pmd))
+		return NULL;
+	return pmd;
+}
+#endif
+
 DEFINE_SPINLOCK(pgd_lock);
 LIST_HEAD(pgd_list);
 
@@ -236,10 +277,27 @@ void vmalloc_sync_all(void)
 	for (address = VMALLOC_START & PMD_MASK;
 	     address >= TASK_SIZE && address < FIXADDR_TOP;
 	     address += PMD_SIZE) {
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		unsigned long cpu;
+#else
 		struct page *page;
+#endif
 
 		spin_lock(&pgd_lock);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
+			pgd_t *pgd = get_cpu_pgd(cpu, user);
+			pmd_t *ret;
+
+			ret = vmalloc_sync_one(pgd, address);
+			if (!ret)
+				break;
+			pgd = get_cpu_pgd(cpu, kernel);
+#else
 		list_for_each_entry(page, &pgd_list, lru) {
+			pgd_t *pgd;
 			spinlock_t *pgt_lock;
 			pmd_t *ret;
 
@@ -247,8 +305,14 @@ void vmalloc_sync_all(void)
 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
 
 			spin_lock(pgt_lock);
-			ret = vmalloc_sync_one(page_address(page), address);
+			pgd = page_address(page);
+#endif
+
+			ret = vmalloc_sync_one(pgd, address);
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 			spin_unlock(pgt_lock);
+#endif
 
 			if (!ret)
 				break;
@@ -282,6 +346,12 @@ static noinline int vmalloc_fault(unsigned long address)
 	 * an interrupt in the middle of a task switch..
 	 */
 	pgd_paddr = read_cr3();
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	BUG_ON(__pa(get_cpu_pgd(smp_processor_id(), kernel)) != (pgd_paddr & __PHYSICAL_MASK));
+	vmalloc_sync_one(__va(pgd_paddr + PAGE_SIZE), address);
+#endif
+
 	pmd_k = vmalloc_sync_one(__va(pgd_paddr), address);
 	if (!pmd_k)
 		return -1;
@@ -378,11 +448,25 @@ static noinline int vmalloc_fault(unsigned long address)
 	 * happen within a race in page table update. In the later
 	 * case just flush:
 	 */
-	pgd = pgd_offset(current->active_mm, address);
+
 	pgd_ref = pgd_offset_k(address);
 	if (pgd_none(*pgd_ref))
 		return -1;
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	BUG_ON(__pa(get_cpu_pgd(smp_processor_id(), kernel)) != (read_cr3() & __PHYSICAL_MASK));
+	pgd = pgd_offset_cpu(smp_processor_id(), user, address);
+	if (pgd_none(*pgd)) {
+		set_pgd(pgd, *pgd_ref);
+		arch_flush_lazy_mmu_mode();
+	} else {
+		BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref));
+	}
+	pgd = pgd_offset_cpu(smp_processor_id(), kernel, address);
+#else
+	pgd = pgd_offset(current->active_mm, address);
+#endif
+
 	if (pgd_none(*pgd)) {
 		set_pgd(pgd, *pgd_ref);
 		arch_flush_lazy_mmu_mode();
@@ -549,7 +633,7 @@ static int is_errata93(struct pt_regs *regs, unsigned long address)
 static int is_errata100(struct pt_regs *regs, unsigned long address)
 {
 #ifdef CONFIG_X86_64
-	if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32))
+	if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32))
 		return 1;
 #endif
 	return 0;
@@ -576,7 +660,7 @@ static int is_f00f_bug(struct pt_regs *regs, unsigned long address)
 }
 
 static const char nx_warning[] = KERN_CRIT
-"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n";
+"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n";
 
 static void
 show_fault_oops(struct pt_regs *regs, unsigned long error_code,
@@ -585,7 +669,7 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code,
 	if (!oops_may_print())
 		return;
 
-	if (error_code & PF_INSTR) {
+	if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) {
 		unsigned int level;
 		pgd_t *pgd;
 		pte_t *pte;
@@ -596,9 +680,21 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code,
 		pte = lookup_address_in_pgd(pgd, address, &level);
 
 		if (pte && pte_present(*pte) && !pte_exec(*pte))
-			printk(nx_warning, from_kuid(&init_user_ns, current_uid()));
+			printk(nx_warning, from_kuid_munged(&init_user_ns, current_uid()), current->comm, task_pid_nr(current));
 	}
 
+#ifdef CONFIG_PAX_KERNEXEC
+	if (init_mm.start_code <= address && address < init_mm.end_code) {
+		if (current->signal->curr_ip)
+			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),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
+		else
+			printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", current->comm, task_pid_nr(current),
+					from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
+	}
+#endif
+
 	printk(KERN_ALERT "BUG: unable to handle kernel ");
 	if (address < PAGE_SIZE)
 		printk(KERN_CONT "NULL pointer dereference");
@@ -779,6 +875,22 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
 				return;
 		}
 #endif
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+		if (pax_is_fetch_fault(regs, error_code, address)) {
+
+#ifdef CONFIG_PAX_EMUTRAMP
+			switch (pax_handle_fetch_fault(regs)) {
+			case 2:
+				return;
+			}
+#endif
+
+			pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp);
+			do_group_exit(SIGKILL);
+		}
+#endif
+
 		/* Kernel addresses are always protection faults: */
 		if (address >= TASK_SIZE)
 			error_code |= PF_PROT;
@@ -864,7 +976,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
 	if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
 		printk(KERN_ERR
 	"MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n",
-			tsk->comm, tsk->pid, address);
+			tsk->comm, task_pid_nr(tsk), address);
 		code = BUS_MCEERR_AR;
 	}
 #endif
@@ -918,6 +1030,99 @@ static int spurious_fault_check(unsigned long error_code, pte_t *pte)
 	return 1;
 }
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code)
+{
+	pte_t *pte;
+	pmd_t *pmd;
+	spinlock_t *ptl;
+	unsigned char pte_mask;
+
+	if ((__supported_pte_mask & _PAGE_NX) || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) ||
+	    !(mm->pax_flags & MF_PAX_PAGEEXEC))
+		return 0;
+
+	/* PaX: it's our fault, let's handle it if we can */
+
+	/* PaX: take a look at read faults before acquiring any locks */
+	if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) {
+		/* instruction fetch attempt from a protected page in user mode */
+		up_read(&mm->mmap_sem);
+
+#ifdef CONFIG_PAX_EMUTRAMP
+		switch (pax_handle_fetch_fault(regs)) {
+		case 2:
+			return 1;
+		}
+#endif
+
+		pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp);
+		do_group_exit(SIGKILL);
+	}
+
+	pmd = pax_get_pmd(mm, address);
+	if (unlikely(!pmd))
+		return 0;
+
+	pte = pte_offset_map_lock(mm, pmd, address, &ptl);
+	if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) {
+		pte_unmap_unlock(pte, ptl);
+		return 0;
+	}
+
+	if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) {
+		/* write attempt to a protected page in user mode */
+		pte_unmap_unlock(pte, ptl);
+		return 0;
+	}
+
+#ifdef CONFIG_SMP
+	if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask)))
+#else
+	if (likely(address > get_limit(regs->cs)))
+#endif
+	{
+		set_pte(pte, pte_mkread(*pte));
+		__flush_tlb_one(address);
+		pte_unmap_unlock(pte, ptl);
+		up_read(&mm->mmap_sem);
+		return 1;
+	}
+
+	pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1));
+
+	/*
+	 * PaX: fill DTLB with user rights and retry
+	 */
+	__asm__ __volatile__ (
+		"orb %2,(%1)\n"
+#if defined(CONFIG_M586) || defined(CONFIG_M586TSC)
+/*
+ * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's
+ * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any*
+ * page fault when examined during a TLB load attempt. this is true not only
+ * for PTEs holding a non-present entry but also present entries that will
+ * raise a page fault (such as those set up by PaX, or the copy-on-write
+ * mechanism). in effect it means that we do *not* need to flush the TLBs
+ * for our target pages since their PTEs are simply not in the TLBs at all.
+
+ * the best thing in omitting it is that we gain around 15-20% speed in the
+ * fast path of the page fault handler and can get rid of tracing since we
+ * can no longer flush unintended entries.
+ */
+		"invlpg (%0)\n"
+#endif
+		__copyuser_seg"testb $0,(%0)\n"
+		"xorb %3,(%1)\n"
+		:
+		: "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER)
+		: "memory", "cc");
+	pte_unmap_unlock(pte, ptl);
+	up_read(&mm->mmap_sem);
+	return 1;
+}
+#endif
+
 /*
  * Handle a spurious fault caused by a stale TLB entry.
  *
@@ -985,6 +1190,9 @@ int show_unhandled_signals = 1;
 static inline int
 access_error(unsigned long error_code, struct vm_area_struct *vma)
 {
+	if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC))
+		return 1;
+
 	if (error_code & PF_WRITE) {
 		/* write, present and write, not present: */
 		if (unlikely(!(vma->vm_flags & VM_WRITE)))
@@ -1019,7 +1227,7 @@ static inline bool smap_violation(int error_code, struct pt_regs *regs)
 	if (error_code & PF_USER)
 		return false;
 
-	if (!user_mode_vm(regs) && (regs->flags & X86_EFLAGS_AC))
+	if (!user_mode(regs) && (regs->flags & X86_EFLAGS_AC))
 		return false;
 
 	return true;
@@ -1047,6 +1255,22 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code,
 	tsk = current;
 	mm = tsk->mm;
 
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+	if (!user_mode(regs) && address < 2 * pax_user_shadow_base) {
+		if (!search_exception_tables(regs->ip)) {
+			printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n");
+			bad_area_nosemaphore(regs, error_code, address);
+			return;
+		}
+		if (address < pax_user_shadow_base) {
+			printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n");
+			printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip);
+			show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR);
+		} else
+			address -= pax_user_shadow_base;
+	}
+#endif
+
 	/*
 	 * Detect and handle instructions that would cause a page fault for
 	 * both a tracked kernel page and a userspace page.
@@ -1124,7 +1348,7 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code,
 	 * User-mode registers count as a user access even for any
 	 * potential system fault or CPU buglet:
 	 */
-	if (user_mode_vm(regs)) {
+	if (user_mode(regs)) {
 		local_irq_enable();
 		error_code |= PF_USER;
 		flags |= FAULT_FLAG_USER;
@@ -1171,6 +1395,11 @@ retry:
 		might_sleep();
 	}
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
+	if (pax_handle_pageexec_fault(regs, mm, address, error_code))
+		return;
+#endif
+
 	vma = find_vma(mm, address);
 	if (unlikely(!vma)) {
 		bad_area(regs, error_code, address);
@@ -1182,18 +1411,24 @@ retry:
 		bad_area(regs, error_code, address);
 		return;
 	}
-	if (error_code & PF_USER) {
-		/*
-		 * Accessing the stack below %sp is always a bug.
-		 * The large cushion allows instructions like enter
-		 * and pusha to work. ("enter $65535, $31" pushes
-		 * 32 pointers and then decrements %sp by 65535.)
-		 */
-		if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) {
-			bad_area(regs, error_code, address);
-			return;
-		}
+	/*
+	 * Accessing the stack below %sp is always a bug.
+	 * The large cushion allows instructions like enter
+	 * and pusha to work. ("enter $65535, $31" pushes
+	 * 32 pointers and then decrements %sp by 65535.)
+	 */
+	if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) {
+		bad_area(regs, error_code, address);
+		return;
 	}
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) {
+		bad_area(regs, error_code, address);
+		return;
+	}
+#endif
+
 	if (unlikely(expand_stack(vma, address))) {
 		bad_area(regs, error_code, address);
 		return;
@@ -1309,3 +1544,292 @@ trace_do_page_fault(struct pt_regs *regs, unsigned long error_code)
 }
 NOKPROBE_SYMBOL(trace_do_page_fault);
 #endif /* CONFIG_TRACING */
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address)
+{
+	struct mm_struct *mm = current->mm;
+	unsigned long ip = regs->ip;
+
+	if (v8086_mode(regs))
+		ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff);
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (mm->pax_flags & MF_PAX_PAGEEXEC) {
+		if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR))
+			return true;
+		if (!(error_code & (PF_PROT | PF_WRITE)) && ip == address)
+			return true;
+		return false;
+	}
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC) {
+	if (!(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address))
+			return true;
+		return false;
+	}
+#endif
+
+	return false;
+}
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+static int pax_handle_fetch_fault_32(struct pt_regs *regs)
+{
+	int err;
+
+	do { /* PaX: libffi trampoline emulation */
+		unsigned char mov, jmp;
+		unsigned int addr1, addr2;
+
+#ifdef CONFIG_X86_64
+		if ((regs->ip + 9) >> 32)
+			break;
+#endif
+
+		err = get_user(mov, (unsigned char __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
+		err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5));
+		err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
+
+		if (err)
+			break;
+
+		if (mov == 0xB8 && jmp == 0xE9) {
+			regs->ax = addr1;
+			regs->ip = (unsigned int)(regs->ip + addr2 + 10);
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #1 */
+		unsigned char mov1, mov2;
+		unsigned short jmp;
+		unsigned int addr1, addr2;
+
+#ifdef CONFIG_X86_64
+		if ((regs->ip + 11) >> 32)
+			break;
+#endif
+
+		err = get_user(mov1, (unsigned char __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
+		err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5));
+		err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
+		err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) {
+			regs->cx = addr1;
+			regs->ax = addr2;
+			regs->ip = addr2;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #2 */
+		unsigned char mov, jmp;
+		unsigned int addr1, addr2;
+
+#ifdef CONFIG_X86_64
+		if ((regs->ip + 9) >> 32)
+			break;
+#endif
+
+		err = get_user(mov, (unsigned char __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
+		err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5));
+		err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
+
+		if (err)
+			break;
+
+		if (mov == 0xB9 && jmp == 0xE9) {
+			regs->cx = addr1;
+			regs->ip = (unsigned int)(regs->ip + addr2 + 10);
+			return 2;
+		}
+	} while (0);
+
+	return 1; /* PaX in action */
+}
+
+#ifdef CONFIG_X86_64
+static int pax_handle_fetch_fault_64(struct pt_regs *regs)
+{
+	int err;
+
+	do { /* PaX: libffi trampoline emulation */
+		unsigned short mov1, mov2, jmp1;
+		unsigned char stcclc, jmp2;
+		unsigned long addr1, addr2;
+
+		err = get_user(mov1, (unsigned short __user *)regs->ip);
+		err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2));
+		err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10));
+		err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12));
+		err |= get_user(stcclc, (unsigned char __user *)(regs->ip + 20));
+		err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 21));
+		err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 23));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xBB49 && mov2 == 0xBA49 && (stcclc == 0xF8 || stcclc == 0xF9) && jmp1 == 0xFF49 && jmp2 == 0xE3) {
+			regs->r11 = addr1;
+			regs->r10 = addr2;
+			if (stcclc == 0xF8)
+				regs->flags &= ~X86_EFLAGS_CF;
+			else
+				regs->flags |= X86_EFLAGS_CF;
+			regs->ip = addr1;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #1 */
+		unsigned short mov1, mov2, jmp1;
+		unsigned char jmp2;
+		unsigned int addr1;
+		unsigned long addr2;
+
+		err = get_user(mov1, (unsigned short __user *)regs->ip);
+		err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2));
+		err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6));
+		err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8));
+		err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16));
+		err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) {
+			regs->r11 = addr1;
+			regs->r10 = addr2;
+			regs->ip = addr1;
+			return 2;
+		}
+	} while (0);
+
+	do { /* PaX: gcc trampoline emulation #2 */
+		unsigned short mov1, mov2, jmp1;
+		unsigned char jmp2;
+		unsigned long addr1, addr2;
+
+		err = get_user(mov1, (unsigned short __user *)regs->ip);
+		err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2));
+		err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10));
+		err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12));
+		err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20));
+		err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22));
+
+		if (err)
+			break;
+
+		if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) {
+			regs->r11 = addr1;
+			regs->r10 = addr2;
+			regs->ip = addr1;
+			return 2;
+		}
+	} while (0);
+
+	return 1; /* PaX in action */
+}
+#endif
+
+/*
+ * PaX: decide what to do with offenders (regs->ip = fault address)
+ *
+ * returns 1 when task should be killed
+ *         2 when gcc trampoline was detected
+ */
+static int pax_handle_fetch_fault(struct pt_regs *regs)
+{
+	if (v8086_mode(regs))
+		return 1;
+
+	if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP))
+		return 1;
+
+#ifdef CONFIG_X86_32
+	return pax_handle_fetch_fault_32(regs);
+#else
+	if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))
+		return pax_handle_fetch_fault_32(regs);
+	else
+		return pax_handle_fetch_fault_64(regs);
+#endif
+}
+#endif
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
+{
+	long i;
+
+	printk(KERN_ERR "PAX: bytes at PC: ");
+	for (i = 0; i < 20; i++) {
+		unsigned char c;
+		if (get_user(c, (unsigned char __force_user *)pc+i))
+			printk(KERN_CONT "?? ");
+		else
+			printk(KERN_CONT "%02x ", c);
+	}
+	printk("\n");
+
+	printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long));
+	for (i = -1; i < 80 / (long)sizeof(long); i++) {
+		unsigned long c;
+		if (get_user(c, (unsigned long __force_user *)sp+i)) {
+#ifdef CONFIG_X86_32
+			printk(KERN_CONT "???????? ");
+#else
+			if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)))
+				printk(KERN_CONT "???????? ???????? ");
+			else
+				printk(KERN_CONT "???????????????? ");
+#endif
+		} else {
+#ifdef CONFIG_X86_64
+			if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) {
+				printk(KERN_CONT "%08x ", (unsigned int)c);
+				printk(KERN_CONT "%08x ", (unsigned int)(c >> 32));
+			} else
+#endif
+				printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c);
+		}
+	}
+	printk("\n");
+}
+#endif
+
+/**
+ * probe_kernel_write(): safely attempt to write to a location
+ * @dst: address to write to
+ * @src: pointer to the data that shall be written
+ * @size: size of the data chunk
+ *
+ * Safely write to address @dst from the buffer at @src.  If a kernel fault
+ * happens, handle that and return -EFAULT.
+ */
+long notrace probe_kernel_write(void *dst, const void *src, size_t size)
+{
+	long ret;
+	mm_segment_t old_fs = get_fs();
+
+	set_fs(KERNEL_DS);
+	pagefault_disable();
+	pax_open_kernel();
+	ret = __copy_to_user_inatomic((void __force_user *)dst, src, size);
+	pax_close_kernel();
+	pagefault_enable();
+	set_fs(old_fs);
+
+	return ret ? -EFAULT : 0;
+}
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 207d9aef..69030980 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -268,7 +268,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
 	addr = start;
 	len = (unsigned long) nr_pages << PAGE_SHIFT;
 	end = start + len;
-	if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
+	if (unlikely(!access_ok_noprefault(write ? VERIFY_WRITE : VERIFY_READ,
 					(void __user *)start, len)))
 		return 0;
 
@@ -344,6 +344,10 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
 		goto slow_irqon;
 #endif
 
+	if (unlikely(!access_ok_noprefault(write ? VERIFY_WRITE : VERIFY_READ,
+					(void __user *)start, len)))
+		return 0;
+
 	/*
 	 * XXX: batch / limit 'nr', to avoid large irq off latency
 	 * needs some instrumenting to determine the common sizes used by
diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
index 4500142..53a363c 100644
--- a/arch/x86/mm/highmem_32.c
+++ b/arch/x86/mm/highmem_32.c
@@ -45,7 +45,11 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot)
 	idx = type + KM_TYPE_NR*smp_processor_id();
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
 	BUG_ON(!pte_none(*(kmap_pte-idx)));
+
+	pax_open_kernel();
 	set_pte(kmap_pte-idx, mk_pte(page, prot));
+	pax_close_kernel();
+
 	arch_flush_lazy_mmu_mode();
 
 	return (void *)vaddr;
diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
index 8b977eb..4732c33 100644
--- a/arch/x86/mm/hugetlbpage.c
+++ b/arch/x86/mm/hugetlbpage.c
@@ -80,23 +80,24 @@ int pud_huge(pud_t pud)
 #ifdef CONFIG_HUGETLB_PAGE
 static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
 		unsigned long addr, unsigned long len,
-		unsigned long pgoff, unsigned long flags)
+		unsigned long pgoff, unsigned long flags, unsigned long offset)
 {
 	struct hstate *h = hstate_file(file);
 	struct vm_unmapped_area_info info;
-
+	
 	info.flags = 0;
 	info.length = len;
 	info.low_limit = current->mm->mmap_legacy_base;
 	info.high_limit = TASK_SIZE;
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 
 static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
 		unsigned long addr0, unsigned long len,
-		unsigned long pgoff, unsigned long flags)
+		unsigned long pgoff, unsigned long flags, unsigned long offset)
 {
 	struct hstate *h = hstate_file(file);
 	struct vm_unmapped_area_info info;
@@ -108,6 +109,7 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
 	info.high_limit = current->mm->mmap_base;
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	/*
@@ -120,6 +122,12 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
 		VM_BUG_ON(addr != -ENOMEM);
 		info.flags = 0;
 		info.low_limit = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (current->mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += current->mm->delta_mmap;
+#endif
+
 		info.high_limit = TASK_SIZE;
 		addr = vm_unmapped_area(&info);
 	}
@@ -134,10 +142,20 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 	struct hstate *h = hstate_file(file);
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
+	unsigned long pax_task_size = TASK_SIZE;
+	unsigned long offset = gr_rand_threadstack_offset(mm, file, flags);
 
 	if (len & ~huge_page_mask(h))
 		return -EINVAL;
-	if (len > TASK_SIZE)
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	if (len > pax_task_size)
 		return -ENOMEM;
 
 	if (flags & MAP_FIXED) {
@@ -146,19 +164,22 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		return addr;
 	}
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 	if (mm->get_unmapped_area == arch_get_unmapped_area)
 		return hugetlb_get_unmapped_area_bottomup(file, addr, len,
-				pgoff, flags);
+				pgoff, flags, offset);
 	else
 		return hugetlb_get_unmapped_area_topdown(file, addr, len,
-				pgoff, flags);
+				pgoff, flags, offset);
 }
 #endif /* CONFIG_HUGETLB_PAGE */
 
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index f971306..e83e0f6 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -4,6 +4,7 @@
 #include <linux/swap.h>
 #include <linux/memblock.h>
 #include <linux/bootmem.h>	/* for max_low_pfn */
+#include <linux/tboot.h>
 
 #include <asm/cacheflush.h>
 #include <asm/e820.h>
@@ -17,6 +18,8 @@
 #include <asm/proto.h>
 #include <asm/dma.h>		/* for MAX_DMA_PFN */
 #include <asm/microcode.h>
+#include <asm/desc.h>
+#include <asm/bios_ebda.h>
 
 #include "mm_internal.h"
 
@@ -563,7 +566,18 @@ void __init init_mem_mapping(void)
 	early_ioremap_page_table_range_init();
 #endif
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	clone_pgd_range(get_cpu_pgd(0, kernel) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+	clone_pgd_range(get_cpu_pgd(0, user) + KERNEL_PGD_BOUNDARY,
+			swapper_pg_dir + KERNEL_PGD_BOUNDARY,
+			KERNEL_PGD_PTRS);
+	load_cr3(get_cpu_pgd(0, kernel));
+#else
 	load_cr3(swapper_pg_dir);
+#endif
+
 	__flush_tlb_all();
 
 	early_memtest(0, max_pfn_mapped << PAGE_SHIFT);
@@ -579,10 +593,40 @@ void __init init_mem_mapping(void)
  * Access has to be given to non-kernel-ram areas as well, these contain the PCI
  * mmio resources as well as potential bios/acpi data regions.
  */
+
+#ifdef CONFIG_GRKERNSEC_KMEM
+static unsigned int ebda_start __read_only;
+static unsigned int ebda_end __read_only;
+#endif
+
 int devmem_is_allowed(unsigned long pagenr)
 {
-	if (pagenr < 256)
+#ifdef CONFIG_GRKERNSEC_KMEM
+	/* allow BDA */
+	if (!pagenr)
 		return 1;
+	/* allow EBDA */
+	if (pagenr >= ebda_start && pagenr < ebda_end)
+		return 1;
+	/* if tboot is in use, allow access to its hardcoded serial log range */
+	if (tboot_enabled() && ((0x60000 >> PAGE_SHIFT) <= pagenr) && (pagenr < (0x68000 >> PAGE_SHIFT)))
+		return 1;
+#else
+	if (!pagenr)
+		return 1;
+#ifdef CONFIG_VM86
+	if (pagenr < (ISA_START_ADDRESS >> PAGE_SHIFT))
+		return 1;
+#endif
+#endif
+
+	if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT))
+		return 1;
+#ifdef CONFIG_GRKERNSEC_KMEM
+	/* throw out everything else below 1MB */
+	if (pagenr <= 256)
+		return 0;
+#endif
 	if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
 		return 0;
 	if (!page_is_ram(pagenr))
@@ -628,8 +672,117 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
 #endif
 }
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+static inline void gr_init_ebda(void)
+{
+	unsigned int ebda_addr;
+	unsigned int ebda_size = 0;
+
+	ebda_addr = get_bios_ebda();
+	if (ebda_addr) {
+		ebda_size = *(unsigned char *)phys_to_virt(ebda_addr);
+		ebda_size <<= 10;
+	}
+	if (ebda_addr && ebda_size) {
+		ebda_start = ebda_addr >> PAGE_SHIFT;
+		ebda_end = min((unsigned int)PAGE_ALIGN(ebda_addr + ebda_size), (unsigned int)0xa0000) >> PAGE_SHIFT;
+	} else {
+		ebda_start = 0x9f000 >> PAGE_SHIFT;
+		ebda_end = 0xa0000 >> PAGE_SHIFT;
+	}
+}
+#else
+static inline void gr_init_ebda(void) { }
+#endif
+
 void free_initmem(void)
 {
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_32
+	/* PaX: limit KERNEL_CS to actual size */
+	unsigned long addr, limit;
+	struct desc_struct d;
+	int cpu;
+#else
+	pgd_t *pgd;
+	pud_t *pud;
+	pmd_t *pmd;
+	unsigned long addr, end;
+#endif
+#endif
+
+	gr_init_ebda();
+
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_32
+	limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext;
+	limit = (limit - 1UL) >> PAGE_SHIFT;
+
+	memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE);
+	for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
+		pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC);
+		write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S);
+		write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEXEC_KERNEL_CS, &d, DESCTYPE_S);
+	}
+
+	/* PaX: make KERNEL_CS read-only */
+	addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text));
+	if (!paravirt_enabled())
+		set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT);
+/*
+		for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) {
+			pgd = pgd_offset_k(addr);
+			pud = pud_offset(pgd, addr);
+			pmd = pmd_offset(pud, addr);
+			set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
+		}
+*/
+#ifdef CONFIG_X86_PAE
+	set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT);
+/*
+	for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) {
+		pgd = pgd_offset_k(addr);
+		pud = pud_offset(pgd, addr);
+		pmd = pmd_offset(pud, addr);
+	set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask)));
+	}
+*/
+#endif
+
+#ifdef CONFIG_MODULES
+	set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT);
+#endif
+
+#else
+	/* PaX: make kernel code/rodata read-only, rest non-executable */
+	for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) {
+		pgd = pgd_offset_k(addr);
+		pud = pud_offset(pgd, addr);
+		pmd = pmd_offset(pud, addr);
+		if (!pmd_present(*pmd))
+			continue;
+		if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata)
+			set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
+		else
+			set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask)));
+	}
+
+	addr = (unsigned long)__va(__pa(__START_KERNEL_map));
+	end = addr + KERNEL_IMAGE_SIZE;
+	for (; addr < end; addr += PMD_SIZE) {
+	pgd = pgd_offset_k(addr);
+		pud = pud_offset(pgd, addr);
+		pmd = pmd_offset(pud, addr);
+		if (!pmd_present(*pmd))
+			continue;
+		if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata)))
+			set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
+	}
+#endif
+
+	flush_tlb_all();
+#endif
+
 	free_init_pages("unused kernel",
 			(unsigned long)(&__init_begin),
 			(unsigned long)(&__init_end));
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index e395048..cd38278 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -62,33 +62,6 @@ static noinline int do_test_wp_bit(void);
 bool __read_mostly __vmalloc_start_set = false;
 
 /*
- * Creates a middle page table and puts a pointer to it in the
- * given global directory entry. This only returns the gd entry
- * in non-PAE compilation mode, since the middle layer is folded.
- */
-static pmd_t * __init one_md_table_init(pgd_t *pgd)
-{
-	pud_t *pud;
-	pmd_t *pmd_table;
-
-#ifdef CONFIG_X86_PAE
-	if (!(pgd_val(*pgd) & _PAGE_PRESENT)) {
-		pmd_table = (pmd_t *)alloc_low_page();
-		paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT);
-		set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
-		pud = pud_offset(pgd, 0);
-		BUG_ON(pmd_table != pmd_offset(pud, 0));
-
-		return pmd_table;
-	}
-#endif
-	pud = pud_offset(pgd, 0);
-	pmd_table = pmd_offset(pud, 0);
-
-	return pmd_table;
-}
-
-/*
  * Create a page table and place a pointer to it in a middle page
  * directory entry:
  */
@@ -98,13 +71,28 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
 		pte_t *page_table = (pte_t *)alloc_low_page();
 
 		paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT);
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+		set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE));
+#else
 		set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
+#endif
 		BUG_ON(page_table != pte_offset_kernel(pmd, 0));
 	}
 
 	return pte_offset_kernel(pmd, 0);
 }
 
+static pmd_t * __init one_md_table_init(pgd_t *pgd)
+{
+	pud_t *pud;
+	pmd_t *pmd_table;
+
+	pud = pud_offset(pgd, 0);
+	pmd_table = pmd_offset(pud, 0);
+
+	return pmd_table;
+}
+
 pmd_t * __init populate_extra_pmd(unsigned long vaddr)
 {
 	int pgd_idx = pgd_index(vaddr);
@@ -208,6 +196,7 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base)
 	int pgd_idx, pmd_idx;
 	unsigned long vaddr;
 	pgd_t *pgd;
+	pud_t *pud;
 	pmd_t *pmd;
 	pte_t *pte = NULL;
 	unsigned long count = page_table_range_init_count(start, end);
@@ -222,8 +211,13 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base)
 	pgd = pgd_base + pgd_idx;
 
 	for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) {
-		pmd = one_md_table_init(pgd);
-		pmd = pmd + pmd_index(vaddr);
+		pud = pud_offset(pgd, vaddr);
+		pmd = pmd_offset(pud, vaddr);
+
+#ifdef CONFIG_X86_PAE
+		paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT);
+#endif
+
 		for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end);
 							pmd++, pmd_idx++) {
 			pte = page_table_kmap_check(one_page_table_init(pmd),
@@ -235,11 +229,20 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base)
 	}
 }
 
-static inline int is_kernel_text(unsigned long addr)
+static inline int is_kernel_text(unsigned long start, unsigned long end)
 {
-	if (addr >= (unsigned long)_text && addr <= (unsigned long)__init_end)
-		return 1;
-	return 0;
+	if ((start >= ktla_ktva((unsigned long)_etext) ||
+	     end <= ktla_ktva((unsigned long)_stext)) &&
+	    (start >= ktla_ktva((unsigned long)_einittext) ||
+	     end <= ktla_ktva((unsigned long)_sinittext)) &&
+
+#ifdef CONFIG_ACPI_SLEEP
+	    (start >= (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) &&
+#endif
+
+	    (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000)))
+		return 0;
+	return 1;
 }
 
 /*
@@ -256,9 +259,10 @@ kernel_physical_mapping_init(unsigned long start,
 	unsigned long last_map_addr = end;
 	unsigned long start_pfn, end_pfn;
 	pgd_t *pgd_base = swapper_pg_dir;
-	int pgd_idx, pmd_idx, pte_ofs;
+	unsigned int pgd_idx, pmd_idx, pte_ofs;
 	unsigned long pfn;
 	pgd_t *pgd;
+	pud_t *pud;
 	pmd_t *pmd;
 	pte_t *pte;
 	unsigned pages_2m, pages_4k;
@@ -291,8 +295,13 @@ repeat:
 	pfn = start_pfn;
 	pgd_idx = pgd_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET);
 	pgd = pgd_base + pgd_idx;
-	for (; pgd_idx < PTRS_PER_PGD; pgd++, pgd_idx++) {
-		pmd = one_md_table_init(pgd);
+	for (; pgd_idx < PTRS_PER_PGD && pfn < max_low_pfn; pgd++, pgd_idx++) {
+		pud = pud_offset(pgd, 0);
+		pmd = pmd_offset(pud, 0);
+
+#ifdef CONFIG_X86_PAE
+		paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT);
+#endif
 
 		if (pfn >= end_pfn)
 			continue;
@@ -304,14 +313,13 @@ repeat:
 #endif
 		for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn;
 		     pmd++, pmd_idx++) {
-			unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET;
+			unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET;
 
 			/*
 			 * Map with big pages if possible, otherwise
 			 * create normal page tables:
 			 */
 			if (use_pse) {
-				unsigned int addr2;
 				pgprot_t prot = PAGE_KERNEL_LARGE;
 				/*
 				 * first pass will use the same initial
@@ -322,11 +330,7 @@ repeat:
 						 _PAGE_PSE);
 
 				pfn &= PMD_MASK >> PAGE_SHIFT;
-				addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE +
-					PAGE_OFFSET + PAGE_SIZE-1;
-
-				if (is_kernel_text(addr) ||
-				    is_kernel_text(addr2))
+				if (is_kernel_text(address, address + PMD_SIZE))
 					prot = PAGE_KERNEL_LARGE_EXEC;
 
 				pages_2m++;
@@ -343,7 +347,7 @@ repeat:
 			pte_ofs = pte_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET);
 			pte += pte_ofs;
 			for (; pte_ofs < PTRS_PER_PTE && pfn < end_pfn;
-			     pte++, pfn++, pte_ofs++, addr += PAGE_SIZE) {
+			     pte++, pfn++, pte_ofs++, address += PAGE_SIZE) {
 				pgprot_t prot = PAGE_KERNEL;
 				/*
 				 * first pass will use the same initial
@@ -351,7 +355,7 @@ repeat:
 				 */
 				pgprot_t init_prot = __pgprot(PTE_IDENT_ATTR);
 
-				if (is_kernel_text(addr))
+				if (is_kernel_text(address, address + PAGE_SIZE))
 					prot = PAGE_KERNEL_EXEC;
 
 				pages_4k++;
@@ -474,7 +478,7 @@ void __init native_pagetable_init(void)
 
 		pud = pud_offset(pgd, va);
 		pmd = pmd_offset(pud, va);
-		if (!pmd_present(*pmd))
+		if (!pmd_present(*pmd)) // PAX TODO || pmd_large(*pmd))
 			break;
 
 		/* should not be large page here */
@@ -532,12 +536,10 @@ void __init early_ioremap_page_table_range_init(void)
 
 static void __init pagetable_init(void)
 {
-	pgd_t *pgd_base = swapper_pg_dir;
-
-	permanent_kmaps_init(pgd_base);
+	permanent_kmaps_init(swapper_pg_dir);
 }
 
-pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
 /* user-defined highmem size */
@@ -787,10 +789,10 @@ void __init mem_init(void)
 		((unsigned long)&__init_end -
 		 (unsigned long)&__init_begin) >> 10,
 
-		(unsigned long)&_etext, (unsigned long)&_edata,
-		((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
+		(unsigned long)&_sdata, (unsigned long)&_edata,
+		((unsigned long)&_edata - (unsigned long)&_sdata) >> 10,
 
-		(unsigned long)&_text, (unsigned long)&_etext,
+		ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext),
 		((unsigned long)&_etext - (unsigned long)&_text) >> 10);
 
 	/*
@@ -883,6 +885,7 @@ void set_kernel_text_rw(void)
 	if (!kernel_set_to_readonly)
 		return;
 
+	start = ktla_ktva(start);
 	pr_debug("Set kernel text: %lx - %lx for read write\n",
 		 start, start+size);
 
@@ -897,6 +900,7 @@ void set_kernel_text_ro(void)
 	if (!kernel_set_to_readonly)
 		return;
 
+	start = ktla_ktva(start);
 	pr_debug("Set kernel text: %lx - %lx for read only\n",
 		 start, start+size);
 
@@ -925,6 +929,7 @@ void mark_rodata_ro(void)
 	unsigned long start = PFN_ALIGN(_text);
 	unsigned long size = PFN_ALIGN(_etext) - start;
 
+	start = ktla_ktva(start);
 	set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
 	printk(KERN_INFO "Write protecting the kernel text: %luk\n",
 		size >> 10);
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index df1a992..94c272c 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -151,7 +151,7 @@ early_param("gbpages", parse_direct_gbpages_on);
  * around without checking the pgd every time.
  */
 
-pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP;
+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_IOMAP);
 EXPORT_SYMBOL_GPL(__supported_pte_mask);
 
 int force_personality32;
@@ -184,12 +184,29 @@ void sync_global_pgds(unsigned long start, unsigned long end)
 
 	for (address = start; address <= end; address += PGDIR_SIZE) {
 		const pgd_t *pgd_ref = pgd_offset_k(address);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		unsigned long cpu;
+#else
 		struct page *page;
+#endif
 
 		if (pgd_none(*pgd_ref))
 			continue;
 
 		spin_lock(&pgd_lock);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
+			pgd_t *pgd = pgd_offset_cpu(cpu, user, address);
+
+			if (pgd_none(*pgd))
+				set_pgd(pgd, *pgd_ref);
+			else
+				BUG_ON(pgd_page_vaddr(*pgd)
+				       != pgd_page_vaddr(*pgd_ref));
+			pgd = pgd_offset_cpu(cpu, kernel, address);
+#else
 		list_for_each_entry(page, &pgd_list, lru) {
 			pgd_t *pgd;
 			spinlock_t *pgt_lock;
@@ -198,6 +215,7 @@ void sync_global_pgds(unsigned long start, unsigned long end)
 			/* the pgt_lock only for Xen */
 			pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
 			spin_lock(pgt_lock);
+#endif
 
 			if (pgd_none(*pgd))
 				set_pgd(pgd, *pgd_ref);
@@ -205,7 +223,10 @@ void sync_global_pgds(unsigned long start, unsigned long end)
 				BUG_ON(pgd_page_vaddr(*pgd)
 				       != pgd_page_vaddr(*pgd_ref));
 
+#ifndef CONFIG_PAX_PER_CPU_PGD
 			spin_unlock(pgt_lock);
+#endif
+
 		}
 		spin_unlock(&pgd_lock);
 	}
@@ -238,7 +259,7 @@ static pud_t *fill_pud(pgd_t *pgd, unsigned long vaddr)
 {
 	if (pgd_none(*pgd)) {
 		pud_t *pud = (pud_t *)spp_getpage();
-		pgd_populate(&init_mm, pgd, pud);
+		pgd_populate_kernel(&init_mm, pgd, pud);
 		if (pud != pud_offset(pgd, 0))
 			printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n",
 			       pud, pud_offset(pgd, 0));
@@ -250,7 +271,7 @@ static pmd_t *fill_pmd(pud_t *pud, unsigned long vaddr)
 {
 	if (pud_none(*pud)) {
 		pmd_t *pmd = (pmd_t *) spp_getpage();
-		pud_populate(&init_mm, pud, pmd);
+		pud_populate_kernel(&init_mm, pud, pmd);
 		if (pmd != pmd_offset(pud, 0))
 			printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n",
 			       pmd, pmd_offset(pud, 0));
@@ -279,7 +300,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte)
 	pmd = fill_pmd(pud, vaddr);
 	pte = fill_pte(pmd, vaddr);
 
+	pax_open_kernel();
 	set_pte(pte, new_pte);
+	pax_close_kernel();
 
 	/*
 	 * It's enough to flush this one mapping.
@@ -338,14 +361,12 @@ static void __init __init_extra_mapping(unsigned long phys, unsigned long size,
 		pgd = pgd_offset_k((unsigned long)__va(phys));
 		if (pgd_none(*pgd)) {
 			pud = (pud_t *) spp_getpage();
-			set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE |
-						_PAGE_USER));
+			set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE));
 		}
 		pud = pud_offset(pgd, (unsigned long)__va(phys));
 		if (pud_none(*pud)) {
 			pmd = (pmd_t *) spp_getpage();
-			set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE |
-						_PAGE_USER));
+			set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE));
 		}
 		pmd = pmd_offset(pud, phys);
 		BUG_ON(!pmd_none(*pmd));
@@ -586,7 +607,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end,
 					      prot);
 
 		spin_lock(&init_mm.page_table_lock);
-		pud_populate(&init_mm, pud, pmd);
+		pud_populate_kernel(&init_mm, pud, pmd);
 		spin_unlock(&init_mm.page_table_lock);
 	}
 	__flush_tlb_all();
@@ -627,7 +648,7 @@ kernel_physical_mapping_init(unsigned long start,
 						 page_size_mask);
 
 		spin_lock(&init_mm.page_table_lock);
-		pgd_populate(&init_mm, pgd, pud);
+		pgd_populate_kernel(&init_mm, pgd, pud);
 		spin_unlock(&init_mm.page_table_lock);
 		pgd_changed = true;
 	}
@@ -1195,8 +1216,8 @@ static struct vm_operations_struct gate_vma_ops = {
 static struct vm_area_struct gate_vma = {
 	.vm_start	= VSYSCALL_ADDR,
 	.vm_end		= VSYSCALL_ADDR + PAGE_SIZE,
-	.vm_page_prot	= PAGE_READONLY_EXEC,
-	.vm_flags	= VM_READ | VM_EXEC,
+	.vm_page_prot	= PAGE_READONLY,
+	.vm_flags	= VM_READ,
 	.vm_ops		= &gate_vma_ops,
 };
 
diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
index 7b179b4..6bd17777 100644
--- a/arch/x86/mm/iomap_32.c
+++ b/arch/x86/mm/iomap_32.c
@@ -64,7 +64,11 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
 	type = kmap_atomic_idx_push();
 	idx = type + KM_TYPE_NR * smp_processor_id();
 	vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
+
+	pax_open_kernel();
 	set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
+	pax_close_kernel();
+
 	arch_flush_lazy_mmu_mode();
 
 	return (void *)vaddr;
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index baff1da..2816ef4 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -56,8 +56,8 @@ static int __ioremap_check_ram(unsigned long start_pfn, unsigned long nr_pages,
 	unsigned long i;
 
 	for (i = 0; i < nr_pages; ++i)
-		if (pfn_valid(start_pfn + i) &&
-		    !PageReserved(pfn_to_page(start_pfn + i)))
+		if (pfn_valid(start_pfn + i) && (start_pfn + i >= 0x100 ||
+		    !PageReserved(pfn_to_page(start_pfn + i))))
 			return 1;
 
 	WARN_ONCE(1, "ioremap on RAM pfn 0x%lx\n", start_pfn);
@@ -268,7 +268,7 @@ EXPORT_SYMBOL(ioremap_prot);
  *
  * Caller must ensure there is only one unmapping for the same pointer.
  */
-void iounmap(volatile void __iomem *addr)
+void iounmap(const volatile void __iomem *addr)
 {
 	struct vm_struct *p, *o;
 
@@ -322,6 +322,9 @@ void *xlate_dev_mem_ptr(unsigned long phys)
 
 	/* If page is RAM, we can use __va. Otherwise ioremap and unmap. */
 	if (page_is_ram(start >> PAGE_SHIFT))
+#ifdef CONFIG_HIGHMEM
+	if ((start >> PAGE_SHIFT) < max_low_pfn)
+#endif
 		return __va(phys);
 
 	addr = (void __force *)ioremap_cache(start, PAGE_SIZE);
@@ -334,13 +337,16 @@ void *xlate_dev_mem_ptr(unsigned long phys)
 void unxlate_dev_mem_ptr(unsigned long phys, void *addr)
 {
 	if (page_is_ram(phys >> PAGE_SHIFT))
+#ifdef CONFIG_HIGHMEM
+	if ((phys >> PAGE_SHIFT) < max_low_pfn)
+#endif
 		return;
 
 	iounmap((void __iomem *)((unsigned long)addr & PAGE_MASK));
 	return;
 }
 
-static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss;
+static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE);
 
 static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
 {
@@ -376,8 +382,7 @@ void __init early_ioremap_init(void)
 	early_ioremap_setup();
 
 	pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
-	memset(bm_pte, 0, sizeof(bm_pte));
-	pmd_populate_kernel(&init_mm, pmd, bm_pte);
+	pmd_populate_user(&init_mm, pmd, bm_pte);
 
 	/*
 	 * The boot-ioremap range spans multiple pmds, for which
diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c
index dd89a13..d77bdcc 100644
--- a/arch/x86/mm/kmemcheck/kmemcheck.c
+++ b/arch/x86/mm/kmemcheck/kmemcheck.c
@@ -628,9 +628,9 @@ bool kmemcheck_fault(struct pt_regs *regs, unsigned long address,
 	 * memory (e.g. tracked pages)? For now, we need this to avoid
 	 * invoking kmemcheck for PnP BIOS calls.
 	 */
-	if (regs->flags & X86_VM_MASK)
+	if (v8086_mode(regs))
 		return false;
-	if (regs->cs != __KERNEL_CS)
+	if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS)
 		return false;
 
 	pte = kmemcheck_pte_lookup(address);
diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
index 25e7e13..1964579 100644
--- a/arch/x86/mm/mmap.c
+++ b/arch/x86/mm/mmap.c
@@ -52,7 +52,7 @@ static unsigned int stack_maxrandom_size(void)
  * Leave an at least ~128 MB hole with possible stack randomization.
  */
 #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size())
-#define MAX_GAP (TASK_SIZE/6*5)
+#define MAX_GAP (pax_task_size/6*5)
 
 static int mmap_is_legacy(void)
 {
@@ -82,27 +82,40 @@ static unsigned long mmap_rnd(void)
 	return rnd << PAGE_SHIFT;
 }
 
-static unsigned long mmap_base(void)
+static unsigned long mmap_base(struct mm_struct *mm)
 {
 	unsigned long gap = rlimit(RLIMIT_STACK);
+	unsigned long pax_task_size = TASK_SIZE;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
 
 	if (gap < MIN_GAP)
 		gap = MIN_GAP;
 	else if (gap > MAX_GAP)
 		gap = MAX_GAP;
 
-	return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
+	return PAGE_ALIGN(pax_task_size - gap - mmap_rnd());
 }
 
 /*
  * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64
  * does, but not when emulating X86_32
  */
-static unsigned long mmap_legacy_base(void)
+static unsigned long mmap_legacy_base(struct mm_struct *mm)
 {
-	if (mmap_is_ia32())
+	if (mmap_is_ia32()) {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		if (mm->pax_flags & MF_PAX_SEGMEXEC)
+			return SEGMEXEC_TASK_UNMAPPED_BASE;
+		else
+#endif
+
 		return TASK_UNMAPPED_BASE;
-	else
+	} else
 		return TASK_UNMAPPED_BASE + mmap_rnd();
 }
 
@@ -112,8 +125,15 @@ static unsigned long mmap_legacy_base(void)
  */
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {
-	mm->mmap_legacy_base = mmap_legacy_base();
-	mm->mmap_base = mmap_base();
+	mm->mmap_legacy_base = mmap_legacy_base(mm);
+	mm->mmap_base = mmap_base(mm);
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP) {
+		mm->mmap_legacy_base += mm->delta_mmap;
+		mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
+	}
+#endif
 
 	if (mmap_is_legacy()) {
 		mm->mmap_base = mm->mmap_legacy_base;
diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
index 0057a7a..95c7edd 100644
--- a/arch/x86/mm/mmio-mod.c
+++ b/arch/x86/mm/mmio-mod.c
@@ -194,7 +194,7 @@ static void pre(struct kmmio_probe *p, struct pt_regs *regs,
 		break;
 	default:
 		{
-			unsigned char *ip = (unsigned char *)instptr;
+			unsigned char *ip = (unsigned char *)ktla_ktva(instptr);
 			my_trace->opcode = MMIO_UNKNOWN_OP;
 			my_trace->width = 0;
 			my_trace->value = (*ip) << 16 | *(ip + 1) << 8 |
@@ -234,7 +234,7 @@ static void post(struct kmmio_probe *p, unsigned long condition,
 static void ioremap_trace_core(resource_size_t offset, unsigned long size,
 							void __iomem *addr)
 {
-	static atomic_t next_id;
+	static atomic_unchecked_t next_id;
 	struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL);
 	/* These are page-unaligned. */
 	struct mmiotrace_map map = {
@@ -258,7 +258,7 @@ static void ioremap_trace_core(resource_size_t offset, unsigned long size,
 			.private = trace
 		},
 		.phys = offset,
-		.id = atomic_inc_return(&next_id)
+		.id = atomic_inc_return_unchecked(&next_id)
 	};
 	map.map_id = trace->id;
 
@@ -290,7 +290,7 @@ void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
 	ioremap_trace_core(offset, size, addr);
 }
 
-static void iounmap_trace_core(volatile void __iomem *addr)
+static void iounmap_trace_core(const volatile void __iomem *addr)
 {
 	struct mmiotrace_map map = {
 		.phys = 0,
@@ -328,7 +328,7 @@ not_enabled:
 	}
 }
 
-void mmiotrace_iounmap(volatile void __iomem *addr)
+void mmiotrace_iounmap(const volatile void __iomem *addr)
 {
 	might_sleep();
 	if (is_enabled()) /* recheck and proper locking in *_core() */
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index a32b706..efb308b 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -478,7 +478,7 @@ static bool __init numa_meminfo_cover_memory(const struct numa_meminfo *mi)
 	return true;
 }
 
-static int __init numa_register_memblks(struct numa_meminfo *mi)
+static int __init __intentional_overflow(-1) numa_register_memblks(struct numa_meminfo *mi)
 {
 	unsigned long uninitialized_var(pfn_align);
 	int i, nid;
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index ae242a7..1c7998f 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -262,7 +262,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
 	 */
 #ifdef CONFIG_PCI_BIOS
 	if (pcibios_enabled && within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT))
-		pgprot_val(forbidden) |= _PAGE_NX;
+		pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
 #endif
 
 	/*
@@ -270,9 +270,10 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
 	 * Does not cover __inittext since that is gone later on. On
 	 * 64bit we do not enforce !NX on the low mapping
 	 */
-	if (within(address, (unsigned long)_text, (unsigned long)_etext))
-		pgprot_val(forbidden) |= _PAGE_NX;
+	if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext)))
+		pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
 
+#ifdef CONFIG_DEBUG_RODATA
 	/*
 	 * The .rodata section needs to be read-only. Using the pfn
 	 * catches all aliases.
@@ -280,6 +281,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
 	if (within(pfn, __pa_symbol(__start_rodata) >> PAGE_SHIFT,
 		   __pa_symbol(__end_rodata) >> PAGE_SHIFT))
 		pgprot_val(forbidden) |= _PAGE_RW;
+#endif
 
 #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA)
 	/*
@@ -318,6 +320,13 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
 	}
 #endif
 
+#ifdef CONFIG_PAX_KERNEXEC
+	if (within(pfn, __pa(ktla_ktva((unsigned long)&_text)), __pa((unsigned long)&_sdata))) {
+		pgprot_val(forbidden) |= _PAGE_RW;
+		pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
+	}
+#endif
+
 	prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden));
 
 	return prot;
@@ -420,23 +429,37 @@ EXPORT_SYMBOL_GPL(slow_virt_to_phys);
 static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
 {
 	/* change init_mm */
+	pax_open_kernel();
 	set_pte_atomic(kpte, pte);
+
 #ifdef CONFIG_X86_32
 	if (!SHARED_KERNEL_PMD) {
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		unsigned long cpu;
+#else
 		struct page *page;
+#endif
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+		for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
+			pgd_t *pgd = get_cpu_pgd(cpu, kernel);
+#else
 		list_for_each_entry(page, &pgd_list, lru) {
-			pgd_t *pgd;
+			pgd_t *pgd = (pgd_t *)page_address(page);
+#endif
+
 			pud_t *pud;
 			pmd_t *pmd;
 
-			pgd = (pgd_t *)page_address(page) + pgd_index(address);
+			pgd += pgd_index(address);
 			pud = pud_offset(pgd, address);
 			pmd = pmd_offset(pud, address);
 			set_pte_atomic((pte_t *)pmd, pte);
 		}
 	}
 #endif
+	pax_close_kernel();
 }
 
 static int
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
index 6574388..87e9bef 100644
--- a/arch/x86/mm/pat.c
+++ b/arch/x86/mm/pat.c
@@ -376,7 +376,7 @@ int free_memtype(u64 start, u64 end)
 
 	if (!entry) {
 		printk(KERN_INFO "%s:%d freeing invalid memtype [mem %#010Lx-%#010Lx]\n",
-		       current->comm, current->pid, start, end - 1);
+			current->comm, task_pid_nr(current), start, end - 1);
 		return -EINVAL;
 	}
 
@@ -506,8 +506,8 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
 
 	while (cursor < to) {
 		if (!devmem_is_allowed(pfn)) {
-			printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx]\n",
-				current->comm, from, to - 1);
+			printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx] (%#010Lx)\n",
+				current->comm, from, to - 1, cursor);
 			return 0;
 		}
 		cursor += PAGE_SIZE;
@@ -577,7 +577,7 @@ int kernel_map_sync_memtype(u64 base, unsigned long size, unsigned long flags)
 	if (ioremap_change_attr((unsigned long)__va(base), id_sz, flags) < 0) {
 		printk(KERN_INFO "%s:%d ioremap_change_attr failed %s "
 			"for [mem %#010Lx-%#010Lx]\n",
-			current->comm, current->pid,
+			current->comm, task_pid_nr(current),
 			cattr_name(flags),
 			base, (unsigned long long)(base + size-1));
 		return -EINVAL;
@@ -612,7 +612,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
 		flags = lookup_memtype(paddr);
 		if (want_flags != flags) {
 			printk(KERN_WARNING "%s:%d map pfn RAM range req %s for [mem %#010Lx-%#010Lx], got %s\n",
-				current->comm, current->pid,
+				current->comm, task_pid_nr(current),
 				cattr_name(want_flags),
 				(unsigned long long)paddr,
 				(unsigned long long)(paddr + size - 1),
@@ -634,7 +634,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
 			free_memtype(paddr, paddr + size);
 			printk(KERN_ERR "%s:%d map pfn expected mapping type %s"
 				" for [mem %#010Lx-%#010Lx], got %s\n",
-				current->comm, current->pid,
+				current->comm, task_pid_nr(current),
 				cattr_name(want_flags),
 				(unsigned long long)paddr,
 				(unsigned long long)(paddr + size - 1),
diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
index 415f6c4..d319983 100644
--- a/arch/x86/mm/pat_rbtree.c
+++ b/arch/x86/mm/pat_rbtree.c
@@ -160,7 +160,7 @@ success:
 
 failure:
 	printk(KERN_INFO "%s:%d conflicting memory types "
-		"%Lx-%Lx %s<->%s\n", current->comm, current->pid, start,
+		"%Lx-%Lx %s<->%s\n", current->comm, task_pid_nr(current), start,
 		end, cattr_name(found_type), cattr_name(match->type));
 	return -EBUSY;
 }
diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
index 9f0614d..92ae64a 100644
--- a/arch/x86/mm/pf_in.c
+++ b/arch/x86/mm/pf_in.c
@@ -148,7 +148,7 @@ enum reason_type get_ins_type(unsigned long ins_addr)
 	int i;
 	enum reason_type rv = OTHERS;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 
@@ -168,7 +168,7 @@ static unsigned int get_ins_reg_width(unsigned long ins_addr)
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 
@@ -191,7 +191,7 @@ unsigned int get_ins_mem_width(unsigned long ins_addr)
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 
@@ -415,7 +415,7 @@ unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs)
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 	for (i = 0; i < ARRAY_SIZE(reg_rop); i++)
@@ -470,7 +470,7 @@ unsigned long get_ins_imm_val(unsigned long ins_addr)
 	struct prefix_bits prf;
 	int i;
 
-	p = (unsigned char *)ins_addr;
+	p = (unsigned char *)ktla_ktva(ins_addr);
 	p += skip_prefix(p, &prf);
 	p += get_opcode(p, &opcode);
 	for (i = 0; i < ARRAY_SIZE(imm_wop); i++)
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 6fb6927..4fc13c0 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -97,10 +97,71 @@ static inline void pgd_list_del(pgd_t *pgd)
 	list_del(&page->lru);
 }
 
-#define UNSHARED_PTRS_PER_PGD				\
-	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT;
 
+void __shadow_user_pgds(pgd_t *dst, const pgd_t *src)
+{
+	unsigned int count = USER_PGD_PTRS;
 
+	if (!pax_user_shadow_base)
+		return;
+
+	while (count--)
+		*dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER);
+}
+#endif
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+void __clone_user_pgds(pgd_t *dst, const pgd_t *src)
+{
+	unsigned int count = USER_PGD_PTRS;
+
+	while (count--) {
+		pgd_t pgd;
+
+#ifdef CONFIG_X86_64
+		pgd = __pgd(pgd_val(*src++) | _PAGE_USER);
+#else
+		pgd = *src++;
+#endif
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+		pgd = __pgd(pgd_val(pgd) & clone_pgd_mask);
+#endif
+
+		*dst++ = pgd;
+	}
+
+}
+#endif
+
+#ifdef CONFIG_X86_64
+#define pxd_t				pud_t
+#define pyd_t				pgd_t
+#define paravirt_release_pxd(pfn)	paravirt_release_pud(pfn)
+#define pgtable_pxd_page_ctor(page)	true
+#define pgtable_pxd_page_dtor(page)
+#define pxd_free(mm, pud)		pud_free((mm), (pud))
+#define pyd_populate(mm, pgd, pud)	pgd_populate((mm), (pgd), (pud))
+#define pyd_offset(mm, address)		pgd_offset((mm), (address))
+#define PYD_SIZE			PGDIR_SIZE
+#else
+#define pxd_t				pmd_t
+#define pyd_t				pud_t
+#define paravirt_release_pxd(pfn)	paravirt_release_pmd(pfn)
+#define pgtable_pxd_page_ctor(page)	pgtable_pmd_page_ctor(page)
+#define pgtable_pxd_page_dtor(page)	pgtable_pmd_page_dtor(page)
+#define pxd_free(mm, pud)		pmd_free((mm), (pud))
+#define pyd_populate(mm, pgd, pud)	pud_populate((mm), (pgd), (pud))
+#define pyd_offset(mm, address)		pud_offset((mm), (address))
+#define PYD_SIZE			PUD_SIZE
+#endif
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+static inline void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) {}
+static inline void pgd_dtor(pgd_t *pgd) {}
+#else
 static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm)
 {
 	BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm));
@@ -141,6 +202,7 @@ static void pgd_dtor(pgd_t *pgd)
 	pgd_list_del(pgd);
 	spin_unlock(&pgd_lock);
 }
+#endif
 
 /*
  * List of all pgd's needed for non-PAE so it can invalidate entries
@@ -153,7 +215,7 @@ static void pgd_dtor(pgd_t *pgd)
  * -- nyc
  */
 
-#ifdef CONFIG_X86_PAE
+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
 /*
  * In PAE mode, we need to do a cr3 reload (=tlb flush) when
  * updating the top-level pagetable entries to guarantee the
@@ -165,7 +227,7 @@ static void pgd_dtor(pgd_t *pgd)
  * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate
  * and initialize the kernel pmds here.
  */
-#define PREALLOCATED_PMDS	UNSHARED_PTRS_PER_PGD
+#define PREALLOCATED_PXDS	(SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
 
 void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
 {
@@ -183,43 +245,45 @@ void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
 	 */
 	flush_tlb_mm(mm);
 }
+#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD)
+#define PREALLOCATED_PXDS	USER_PGD_PTRS
 #else  /* !CONFIG_X86_PAE */
 
 /* No need to prepopulate any pagetable entries in non-PAE modes. */
-#define PREALLOCATED_PMDS	0
+#define PREALLOCATED_PXDS	0
 
 #endif	/* CONFIG_X86_PAE */
 
-static void free_pmds(pmd_t *pmds[])
+static void free_pxds(pxd_t *pxds[])
 {
 	int i;
 
-	for(i = 0; i < PREALLOCATED_PMDS; i++)
-		if (pmds[i]) {
-			pgtable_pmd_page_dtor(virt_to_page(pmds[i]));
-			free_page((unsigned long)pmds[i]);
+	for(i = 0; i < PREALLOCATED_PXDS; i++)
+		if (pxds[i]) {
+			pgtable_pxd_page_dtor(virt_to_page(pxds[i]));
+			free_page((unsigned long)pxds[i]);
 		}
 }
 
-static int preallocate_pmds(pmd_t *pmds[])
+static int preallocate_pxds(pxd_t *pxds[])
 {
 	int i;
 	bool failed = false;
 
-	for(i = 0; i < PREALLOCATED_PMDS; i++) {
-		pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP);
-		if (!pmd)
+	for(i = 0; i < PREALLOCATED_PXDS; i++) {
+		pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP);
+		if (!pxd)
 			failed = true;
-		if (pmd && !pgtable_pmd_page_ctor(virt_to_page(pmd))) {
-			free_page((unsigned long)pmd);
-			pmd = NULL;
+		if (pxd && !pgtable_pxd_page_ctor(virt_to_page(pxd))) {
+			free_page((unsigned long)pxd);
+			pxd = NULL;
 			failed = true;
 		}
-		pmds[i] = pmd;
+		pxds[i] = pxd;
 	}
 
 	if (failed) {
-		free_pmds(pmds);
+		free_pxds(pxds);
 		return -ENOMEM;
 	}
 
@@ -232,49 +296,52 @@ static int preallocate_pmds(pmd_t *pmds[])
  * preallocate which never got a corresponding vma will need to be
  * freed manually.
  */
-static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
+static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp)
 {
 	int i;
 
-	for(i = 0; i < PREALLOCATED_PMDS; i++) {
+	for(i = 0; i < PREALLOCATED_PXDS; i++) {
 		pgd_t pgd = pgdp[i];
 
 		if (pgd_val(pgd) != 0) {
-			pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd);
+			pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd);
 
-			pgdp[i] = native_make_pgd(0);
+			set_pgd(pgdp + i, native_make_pgd(0));
 
-			paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT);
-			pmd_free(mm, pmd);
+			paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT);
+			pxd_free(mm, pxd);
 		}
 	}
 }
 
-static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[])
+static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[])
 {
-	pud_t *pud;
+	pyd_t *pyd;
 	int i;
 
-	if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */
+	if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */
 		return;
 
-	pud = pud_offset(pgd, 0);
-
-	for (i = 0; i < PREALLOCATED_PMDS; i++, pud++) {
-		pmd_t *pmd = pmds[i];
+#ifdef CONFIG_X86_64
+	pyd = pyd_offset(mm, 0L);
+#else
+	pyd = pyd_offset(pgd, 0L);
+#endif
 
+	for (i = 0; i < PREALLOCATED_PXDS; i++, pyd++) {
+		pxd_t *pxd = pxds[i];
 		if (i >= KERNEL_PGD_BOUNDARY)
-			memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
-			       sizeof(pmd_t) * PTRS_PER_PMD);
+			memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
+			       sizeof(pxd_t) * PTRS_PER_PMD);
 
-		pud_populate(mm, pud, pmd);
+		pyd_populate(mm, pyd, pxd);
 	}
 }
 
 pgd_t *pgd_alloc(struct mm_struct *mm)
 {
 	pgd_t *pgd;
-	pmd_t *pmds[PREALLOCATED_PMDS];
+	pxd_t *pxds[PREALLOCATED_PXDS];
 
 	pgd = (pgd_t *)__get_free_page(PGALLOC_GFP);
 
@@ -283,11 +350,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
 
 	mm->pgd = pgd;
 
-	if (preallocate_pmds(pmds) != 0)
+	if (preallocate_pxds(pxds) != 0)
 		goto out_free_pgd;
 
 	if (paravirt_pgd_alloc(mm) != 0)
-		goto out_free_pmds;
+		goto out_free_pxds;
 
 	/*
 	 * Make sure that pre-populating the pmds is atomic with
@@ -297,14 +364,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
 	spin_lock(&pgd_lock);
 
 	pgd_ctor(mm, pgd);
-	pgd_prepopulate_pmd(mm, pgd, pmds);
+	pgd_prepopulate_pxd(mm, pgd, pxds);
 
 	spin_unlock(&pgd_lock);
 
 	return pgd;
 
-out_free_pmds:
-	free_pmds(pmds);
+out_free_pxds:
+	free_pxds(pxds);
 out_free_pgd:
 	free_page((unsigned long)pgd);
 out:
@@ -313,7 +380,7 @@ out:
 
 void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 {
-	pgd_mop_up_pmds(mm, pgd);
+	pgd_mop_up_pxds(mm, pgd);
 	pgd_dtor(pgd);
 	paravirt_pgd_free(mm, pgd);
 	free_page((unsigned long)pgd);
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 4dd8cf6..f9d143e 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -47,10 +47,13 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pteval)
 		return;
 	}
 	pte = pte_offset_kernel(pmd, vaddr);
+
+	pax_open_kernel();
 	if (pte_val(pteval))
 		set_pte_at(&init_mm, vaddr, pte, pteval);
 	else
 		pte_clear(&init_mm, vaddr, pte);
+	pax_close_kernel();
 
 	/*
 	 * It's enough to flush this one mapping.
diff --git a/arch/x86/mm/physaddr.c b/arch/x86/mm/physaddr.c
index e666cbb..61788c45 100644
--- a/arch/x86/mm/physaddr.c
+++ b/arch/x86/mm/physaddr.c
@@ -10,7 +10,7 @@
 #ifdef CONFIG_X86_64
 
 #ifdef CONFIG_DEBUG_VIRTUAL
-unsigned long __phys_addr(unsigned long x)
+unsigned long __intentional_overflow(-1) __phys_addr(unsigned long x)
 {
 	unsigned long y = x - __START_KERNEL_map;
 
@@ -67,7 +67,7 @@ EXPORT_SYMBOL(__virt_addr_valid);
 #else
 
 #ifdef CONFIG_DEBUG_VIRTUAL
-unsigned long __phys_addr(unsigned long x)
+unsigned long __intentional_overflow(-1) __phys_addr(unsigned long x)
 {
 	unsigned long phys_addr = x - PAGE_OFFSET;
 	/* VMALLOC_* aren't constants  */
diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c
index 90555bf..f5f1828 100644
--- a/arch/x86/mm/setup_nx.c
+++ b/arch/x86/mm/setup_nx.c
@@ -5,8 +5,10 @@
 #include <asm/pgtable.h>
 #include <asm/proto.h>
 
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 static int disable_nx;
 
+#ifndef CONFIG_PAX_PAGEEXEC
 /*
  * noexec = on|off
  *
@@ -28,12 +30,17 @@ static int __init noexec_setup(char *str)
 	return 0;
 }
 early_param("noexec", noexec_setup);
+#endif
+
+#endif
 
 void x86_configure_nx(void)
 {
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
 	if (cpu_has_nx && !disable_nx)
 		__supported_pte_mask |= _PAGE_NX;
 	else
+#endif
 		__supported_pte_mask &= ~_PAGE_NX;
 }
 
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index dd8dda1..9e9b0f6 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -48,7 +48,11 @@ void leave_mm(int cpu)
 		BUG();
 	if (cpumask_test_cpu(cpu, mm_cpumask(active_mm))) {
 		cpumask_clear_cpu(cpu, mm_cpumask(active_mm));
+
+#ifndef CONFIG_PAX_PER_CPU_PGD
 		load_cr3(swapper_pg_dir);
+#endif
+
 	}
 }
 EXPORT_SYMBOL_GPL(leave_mm);
diff --git a/arch/x86/mm/uderef_64.c b/arch/x86/mm/uderef_64.c
new file mode 100644
index 0000000..dace51c
--- /dev/null
+++ b/arch/x86/mm/uderef_64.c
@@ -0,0 +1,37 @@
+#include <linux/mm.h>
+#include <asm/pgtable.h>
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+/* PaX: due to the special call convention these functions must
+ * - remain leaf functions under all configurations,
+ * - never be called directly, only dereferenced from the wrappers.
+ */
+void __pax_open_userland(void)
+{
+	unsigned int cpu;
+
+	if (unlikely(!segment_eq(get_fs(), USER_DS)))
+		return;
+
+	cpu = raw_get_cpu();
+	BUG_ON((read_cr3() & ~PAGE_MASK) != PCID_KERNEL);
+	write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER | PCID_NOFLUSH);
+	raw_put_cpu_no_resched();
+}
+EXPORT_SYMBOL(__pax_open_userland);
+
+void __pax_close_userland(void)
+{
+	unsigned int cpu;
+
+	if (unlikely(!segment_eq(get_fs(), USER_DS)))
+		return;
+
+	cpu = raw_get_cpu();
+	BUG_ON((read_cr3() & ~PAGE_MASK) != PCID_USER);
+	write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
+	raw_put_cpu_no_resched();
+}
+EXPORT_SYMBOL(__pax_close_userland);
+#endif
diff --git a/arch/x86/net/bpf_jit.S b/arch/x86/net/bpf_jit.S
index 6440221..f746de8 100644
--- a/arch/x86/net/bpf_jit.S
+++ b/arch/x86/net/bpf_jit.S
@@ -9,19 +9,17 @@
  */
 #include <linux/linkage.h>
 #include <asm/dwarf2.h>
+#include <asm/alternative-asm.h>
 
 /*
  * Calling convention :
- * rbx : skb pointer (callee saved)
+ * rdi : skb pointer
  * esi : offset of byte(s) to fetch in skb (can be scratched)
- * r10 : copy of skb->data
+ * r8  : copy of skb->data
  * r9d : hlen = skb->len - skb->data_len
  */
-#define SKBDATA	%r10
+#define SKBDATA	%r8
 #define SKF_MAX_NEG_OFF    $(-0x200000) /* SKF_LL_OFF from filter.h */
-#define MAX_BPF_STACK (512 /* from filter.h */ + \
-	32 /* space for rbx,r13,r14,r15 */ + \
-	8 /* space for skb_copy_bits */)
 
 sk_load_word:
 	.globl	sk_load_word
@@ -38,6 +36,7 @@ sk_load_word_positive_offset:
 	jle	bpf_slow_path_word
 	mov     (SKBDATA,%rsi),%eax
 	bswap   %eax  			/* ntohl() */
+	pax_force_retaddr
 	ret
 
 sk_load_half:
@@ -55,6 +54,7 @@ sk_load_half_positive_offset:
 	jle	bpf_slow_path_half
 	movzwl	(SKBDATA,%rsi),%eax
 	rol	$8,%ax			# ntohs()
+	pax_force_retaddr
 	ret
 
 sk_load_byte:
@@ -69,45 +69,83 @@ sk_load_byte_positive_offset:
 	cmp	%esi,%r9d   /* if (offset >= hlen) goto bpf_slow_path_byte */
 	jle	bpf_slow_path_byte
 	movzbl	(SKBDATA,%rsi),%eax
+	pax_force_retaddr
+	ret
+
+/**
+ * sk_load_byte_msh - BPF_S_LDX_B_MSH helper
+ *
+ * Implements BPF_S_LDX_B_MSH : ldxb  4*([offset]&0xf)
+ * Must preserve A accumulator (%eax)
+ * Inputs : %esi is the offset value
+ */
+sk_load_byte_msh:
+	.globl	sk_load_byte_msh
+	test	%esi,%esi
+	js	bpf_slow_path_byte_msh_neg
+
+sk_load_byte_msh_positive_offset:
+	.globl	sk_load_byte_msh_positive_offset
+	cmp	%esi,%r9d      /* if (offset >= hlen) goto bpf_slow_path_byte_msh */
+	jle	bpf_slow_path_byte_msh
+	movzbl	(SKBDATA,%rsi),%ebx
+	and	$15,%bl
+	shl	$2,%bl
+	pax_force_retaddr
 	ret
 
 /* rsi contains offset and can be scratched */
 #define bpf_slow_path_common(LEN)		\
-	mov	%rbx, %rdi; /* arg1 == skb */	\
+	push	%rdi;    /* save skb */		\
 	push	%r9;				\
 	push	SKBDATA;			\
 /* rsi already has offset */			\
 	mov	$LEN,%ecx;	/* len */	\
-	lea	- MAX_BPF_STACK + 32(%rbp),%rdx;			\
+	lea	-12(%rbp),%rdx;			\
 	call	skb_copy_bits;			\
 	test    %eax,%eax;			\
 	pop	SKBDATA;			\
-	pop	%r9;
+	pop	%r9;				\
+	pop	%rdi
 
 
 bpf_slow_path_word:
 	bpf_slow_path_common(4)
 	js	bpf_error
-	mov	- MAX_BPF_STACK + 32(%rbp),%eax
+	mov	-12(%rbp),%eax
 	bswap	%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_half:
 	bpf_slow_path_common(2)
 	js	bpf_error
-	mov	- MAX_BPF_STACK + 32(%rbp),%ax
+	mov	-12(%rbp),%ax
 	rol	$8,%ax
 	movzwl	%ax,%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_byte:
 	bpf_slow_path_common(1)
 	js	bpf_error
-	movzbl	- MAX_BPF_STACK + 32(%rbp),%eax
+	movzbl	-12(%rbp),%eax
+	pax_force_retaddr
+	ret
+
+bpf_slow_path_byte_msh:
+	xchg	%eax,%ebx /* dont lose A , X is about to be scratched */
+	bpf_slow_path_common(1)
+	js	bpf_error
+	movzbl	-12(%rbp),%eax
+	and	$15,%al
+	shl	$2,%al
+	xchg	%eax,%ebx
+	pax_force_retaddr
 	ret
 
 #define sk_negative_common(SIZE)				\
-	mov	%rbx, %rdi; /* arg1 == skb */			\
+	push	%rdi;	/* save skb */				\
 	push	%r9;						\
 	push	SKBDATA;					\
 /* rsi already has offset */					\
@@ -116,8 +154,10 @@ bpf_slow_path_byte:
 	test	%rax,%rax;					\
 	pop	SKBDATA;					\
 	pop	%r9;						\
+	pop	%rdi;						\
 	jz	bpf_error
 
+
 bpf_slow_path_word_neg:
 	cmp	SKF_MAX_NEG_OFF, %esi	/* test range */
 	jl	bpf_error	/* offset lower -> error  */
@@ -126,6 +166,7 @@ sk_load_word_negative_offset:
 	sk_negative_common(4)
 	mov	(%rax), %eax
 	bswap	%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_half_neg:
@@ -137,6 +178,7 @@ sk_load_half_negative_offset:
 	mov	(%rax),%ax
 	rol	$8,%ax
 	movzwl	%ax,%eax
+	pax_force_retaddr
 	ret
 
 bpf_slow_path_byte_neg:
@@ -146,14 +188,27 @@ sk_load_byte_negative_offset:
 	.globl	sk_load_byte_negative_offset
 	sk_negative_common(1)
 	movzbl	(%rax), %eax
+	pax_force_retaddr
+	ret
+
+bpf_slow_path_byte_msh_neg:
+	cmp	SKF_MAX_NEG_OFF, %esi
+	jl	bpf_error
+sk_load_byte_msh_negative_offset:
+	.globl	sk_load_byte_msh_negative_offset
+	xchg	%eax,%ebx /* dont lose A , X is about to be scratched */
+	sk_negative_common(1)
+	movzbl	(%rax),%eax
+	and	$15,%al
+	shl	$2,%al
+	xchg	%eax,%ebx
+	pax_force_retaddr
 	ret
 
 bpf_error:
 # force a return 0 from jit handler
-	xor	%eax,%eax
-	mov	- MAX_BPF_STACK(%rbp),%rbx
-	mov	- MAX_BPF_STACK + 8(%rbp),%r13
-	mov	- MAX_BPF_STACK + 16(%rbp),%r14
-	mov	- MAX_BPF_STACK + 24(%rbp),%r15
+	xor		%eax,%eax
+	mov		-8(%rbp),%rbx
 	leaveq
+	pax_force_retaddr
 	ret
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
index 99bef86..bdfb5c6 100644
--- a/arch/x86/net/bpf_jit_comp.c
+++ b/arch/x86/net/bpf_jit_comp.c
@@ -1,7 +1,6 @@
 /* bpf_jit_comp.c : BPF JIT compiler
  *
  * Copyright (C) 2011-2013 Eric Dumazet (eric.dumazet@gmail.com)
- * Internal BPF Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -15,16 +14,28 @@
 #include <linux/if_vlan.h>
 #include <linux/random.h>
 
+/*
+ * Conventions :
+ *  EAX : BPF A accumulator
+ *  EBX : BPF X accumulator
+ *  RDI : pointer to skb   (first argument given to JIT function)
+ *  RBP : frame pointer (even if CONFIG_FRAME_POINTER=n)
+ *  ECX,EDX,ESI : scratch registers
+ *  r9d : skb->len - skb->data_len (headlen)
+ *  r8  : skb->data
+ * -8(RBP) : saved RBX value
+ * -16(RBP)..-80(RBP) : BPF_MEMWORDS values
+ */
 int bpf_jit_enable __read_mostly;
 
 /*
  * assembly code in arch/x86/net/bpf_jit.S
  */
-extern u8 sk_load_word[], sk_load_half[], sk_load_byte[];
+extern u8 sk_load_word[], sk_load_half[], sk_load_byte[], sk_load_byte_msh[];
 extern u8 sk_load_word_positive_offset[], sk_load_half_positive_offset[];
-extern u8 sk_load_byte_positive_offset[];
+extern u8 sk_load_byte_positive_offset[], sk_load_byte_msh_positive_offset[];
 extern u8 sk_load_word_negative_offset[], sk_load_half_negative_offset[];
-extern u8 sk_load_byte_negative_offset[];
+extern u8 sk_load_byte_negative_offset[], sk_load_byte_msh_negative_offset[];
 
 static inline u8 *emit_code(u8 *ptr, u32 bytes, unsigned int len)
 {
@@ -39,50 +50,113 @@ static inline u8 *emit_code(u8 *ptr, u32 bytes, unsigned int len)
 	return ptr + len;
 }
 
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+#define MAX_INSTR_CODE_SIZE 96
+#else
+#define MAX_INSTR_CODE_SIZE 64
+#endif
+
 #define EMIT(bytes, len)	do { prog = emit_code(prog, bytes, len); } while (0)
 
 #define EMIT1(b1)		EMIT(b1, 1)
 #define EMIT2(b1, b2)		EMIT((b1) + ((b2) << 8), 2)
 #define EMIT3(b1, b2, b3)	EMIT((b1) + ((b2) << 8) + ((b3) << 16), 3)
 #define EMIT4(b1, b2, b3, b4)   EMIT((b1) + ((b2) << 8) + ((b3) << 16) + ((b4) << 24), 4)
-#define EMIT1_off32(b1, off) \
-	do {EMIT1(b1); EMIT(off, 4); } while (0)
-#define EMIT2_off32(b1, b2, off) \
-	do {EMIT2(b1, b2); EMIT(off, 4); } while (0)
-#define EMIT3_off32(b1, b2, b3, off) \
-	do {EMIT3(b1, b2, b3); EMIT(off, 4); } while (0)
-#define EMIT4_off32(b1, b2, b3, b4, off) \
-	do {EMIT4(b1, b2, b3, b4); EMIT(off, 4); } while (0)
+
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+/* original constant will appear in ecx */
+#define DILUTE_CONST_SEQUENCE(_off, _key) 	\
+do {						\
+	/* mov ecx, randkey */			\
+	EMIT1(0xb9);				\
+	EMIT(_key, 4);				\
+	/* xor ecx, randkey ^ off */		\
+	EMIT2(0x81, 0xf1);			\
+	EMIT((_key) ^ (_off), 4);		\
+} while (0)
+
+#define EMIT1_off32(b1, _off)								\
+do { 											\
+	switch (b1) {									\
+		case 0x05: /* add eax, imm32 */						\
+		case 0x2d: /* sub eax, imm32 */						\
+		case 0x25: /* and eax, imm32 */						\
+		case 0x0d: /* or eax, imm32 */						\
+		case 0xb8: /* mov eax, imm32 */						\
+		case 0x35: /* xor eax, imm32 */						\
+		case 0x3d: /* cmp eax, imm32 */						\
+		case 0xa9: /* test eax, imm32 */					\
+			DILUTE_CONST_SEQUENCE(_off, randkey);				\
+			EMIT2((b1) - 4, 0xc8); /* convert imm instruction to eax, ecx */\
+			break;								\
+		case 0xbb: /* mov ebx, imm32 */						\
+			DILUTE_CONST_SEQUENCE(_off, randkey);				\
+			/* mov ebx, ecx */						\
+			EMIT2(0x89, 0xcb);						\
+			break;								\
+		case 0xbe: /* mov esi, imm32 */						\
+			DILUTE_CONST_SEQUENCE(_off, randkey);				\
+			/* mov esi, ecx	*/						\
+			EMIT2(0x89, 0xce);						\
+			break;								\
+		case 0xe8: /* call rel imm32, always to known funcs */			\
+			EMIT1(b1);							\
+			EMIT(_off, 4);							\
+			break;								\
+		case 0xe9: /* jmp rel imm32 */						\
+			EMIT1(b1);							\
+			EMIT(_off, 4);							\
+			/* prevent fall-through, we're not called if off = 0 */		\
+			EMIT(0xcccccccc, 4);						\
+			EMIT(0xcccccccc, 4);						\
+			break;								\
+		default:								\
+			BUILD_BUG();							\
+	}										\
+} while (0)
+
+#define EMIT2_off32(b1, b2, _off) 					\
+do { 									\
+	if ((b1) == 0x8d && (b2) == 0xb3) { /* lea esi, [rbx+imm32] */	\
+		EMIT2(0x8d, 0xb3); /* lea esi, [rbx+randkey] */		\
+		EMIT(randkey, 4);					\
+		EMIT2(0x8d, 0xb6); /* lea esi, [esi+off-randkey] */	\
+		EMIT((_off) - randkey, 4);				\
+	} else if ((b1) == 0x69 && (b2) == 0xc0) { /* imul eax, imm32 */\
+		DILUTE_CONST_SEQUENCE(_off, randkey);			\
+		/* imul eax, ecx */					\
+		EMIT3(0x0f, 0xaf, 0xc1);				\
+	} else {							\
+		BUILD_BUG();						\
+	}								\
+} while (0)
+#else
+#define EMIT1_off32(b1, off)	do { EMIT1(b1); EMIT(off, 4);} while (0)
+#define EMIT2_off32(b1, b2, off) do { EMIT2(b1, b2); EMIT(off, 4);} while (0)
+#endif
+
+#define CLEAR_A() EMIT2(0x31, 0xc0) /* xor %eax,%eax */
+#define CLEAR_X() EMIT2(0x31, 0xdb) /* xor %ebx,%ebx */
 
 static inline bool is_imm8(int value)
 {
 	return value <= 127 && value >= -128;
 }
 
-static inline bool is_simm32(s64 value)
+static inline bool is_near(int offset)
 {
-	return value == (s64) (s32) value;
+	return offset <= 127 && offset >= -128;
 }
 
-/* mov dst, src */
-#define EMIT_mov(DST, SRC) \
-	do {if (DST != SRC) \
-		EMIT3(add_2mod(0x48, DST, SRC), 0x89, add_2reg(0xC0, DST, SRC)); \
-	} while (0)
-
-static int bpf_size_to_x86_bytes(int bpf_size)
-{
-	if (bpf_size == BPF_W)
-		return 4;
-	else if (bpf_size == BPF_H)
-		return 2;
-	else if (bpf_size == BPF_B)
-		return 1;
-	else if (bpf_size == BPF_DW)
-		return 4; /* imm32 */
-	else
-		return 0;
-}
+#define EMIT_JMP(offset)						\
+do {									\
+	if (offset) {							\
+		if (is_near(offset))					\
+			EMIT2(0xeb, offset); /* jmp .+off8 */		\
+		else							\
+			EMIT1_off32(0xe9, offset); /* jmp .+off32 */	\
+	}								\
+} while (0)
 
 /* list of x86 cond jumps opcodes (. + s8)
  * Add 0x10 (and an extra 0x0f) to generate far jumps (. + s32)
@@ -93,8 +167,46 @@ static int bpf_size_to_x86_bytes(int bpf_size)
 #define X86_JNE 0x75
 #define X86_JBE 0x76
 #define X86_JA  0x77
-#define X86_JGE 0x7D
-#define X86_JG  0x7F
+
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+#define APPEND_FLOW_VERIFY()	\
+do {				\
+	/* mov ecx, randkey */	\
+	EMIT1(0xb9);		\
+	EMIT(randkey, 4);	\
+	/* cmp ecx, randkey */	\
+	EMIT2(0x81, 0xf9);	\
+	EMIT(randkey, 4);	\
+	/* jz after 8 int 3s */ \
+	EMIT2(0x74, 0x08);	\
+	EMIT(0xcccccccc, 4);	\
+	EMIT(0xcccccccc, 4);	\
+} while (0)
+#else
+#define APPEND_FLOW_VERIFY() do { } while (0)
+#endif
+
+#define EMIT_COND_JMP(op, offset)				\
+do {								\
+	if (is_near(offset))					\
+		EMIT2(op, offset); /* jxx .+off8 */		\
+	else {							\
+		EMIT2(0x0f, op + 0x10);				\
+		EMIT(offset, 4); /* jxx .+off32 */		\
+		APPEND_FLOW_VERIFY();				\
+	}							\
+} while (0)
+
+#define COND_SEL(CODE, TOP, FOP)	\
+	case CODE:			\
+		t_op = TOP;		\
+		f_op = FOP;		\
+		goto cond_branch
+
+
+#define SEEN_DATAREF 1 /* might call external helpers */
+#define SEEN_XREG    2 /* ebx is used */
+#define SEEN_MEM     4 /* use mem[] for temporary storage */
 
 static inline void bpf_flush_icache(void *start, void *end)
 {
@@ -109,804 +221,646 @@ static inline void bpf_flush_icache(void *start, void *end)
 #define CHOOSE_LOAD_FUNC(K, func) \
 	((int)K < 0 ? ((int)K >= SKF_LL_OFF ? func##_negative_offset : func) : func##_positive_offset)
 
-struct bpf_binary_header {
-	unsigned int	pages;
-	/* Note : for security reasons, bpf code will follow a randomly
-	 * sized amount of int3 instructions
-	 */
-	u8		image[];
-};
+/* Helper to find the offset of pkt_type in sk_buff
+ * We want to make sure its still a 3bit field starting at a byte boundary.
+ */
+#define PKT_TYPE_MAX 7
+static int pkt_type_offset(void)
+{
+	struct sk_buff skb_probe = {
+		.pkt_type = ~0,
+	};
+	char *ct = (char *)&skb_probe;
+	unsigned int off;
 
-static struct bpf_binary_header *bpf_alloc_binary(unsigned int proglen,
+	for (off = 0; off < sizeof(struct sk_buff); off++) {
+		if (ct[off] == PKT_TYPE_MAX)
+			return off;
+	}
+	pr_err_once("Please fix pkt_type_offset(), as pkt_type couldn't be found\n");
+	return -1;
+}
+
+/* Note : for security reasons, bpf code will follow a randomly
+ * sized amount of int3 instructions
+ */
+static u8 *bpf_alloc_binary(unsigned int proglen,
 						  u8 **image_ptr)
 {
 	unsigned int sz, hole;
-	struct bpf_binary_header *header;
+	u8 *header;
 
 	/* Most of BPF filters are really small,
 	 * but if some of them fill a page, allow at least
 	 * 128 extra bytes to insert a random section of int3
 	 */
-	sz = round_up(proglen + sizeof(*header) + 128, PAGE_SIZE);
-	header = module_alloc(sz);
+	sz = round_up(proglen + 128, PAGE_SIZE);
+	header = module_alloc_exec(sz);
 	if (!header)
 		return NULL;
 
+	pax_open_kernel();
 	memset(header, 0xcc, sz); /* fill whole space with int3 instructions */
+	pax_close_kernel();
 
-	header->pages = sz / PAGE_SIZE;
-	hole = min(sz - (proglen + sizeof(*header)), PAGE_SIZE - sizeof(*header));
+	hole = PAGE_SIZE - (proglen & ~PAGE_MASK);
 
 	/* insert a random number of int3 instructions before BPF code */
-	*image_ptr = &header->image[prandom_u32() % hole];
+	*image_ptr = &header[prandom_u32() % hole];
 	return header;
 }
 
-/* pick a register outside of BPF range for JIT internal work */
-#define AUX_REG (MAX_BPF_REG + 1)
-
-/* the following table maps BPF registers to x64 registers.
- * x64 register r12 is unused, since if used as base address register
- * in load/store instructions, it always needs an extra byte of encoding
- */
-static const int reg2hex[] = {
-	[BPF_REG_0] = 0,  /* rax */
-	[BPF_REG_1] = 7,  /* rdi */
-	[BPF_REG_2] = 6,  /* rsi */
-	[BPF_REG_3] = 2,  /* rdx */
-	[BPF_REG_4] = 1,  /* rcx */
-	[BPF_REG_5] = 0,  /* r8 */
-	[BPF_REG_6] = 3,  /* rbx callee saved */
-	[BPF_REG_7] = 5,  /* r13 callee saved */
-	[BPF_REG_8] = 6,  /* r14 callee saved */
-	[BPF_REG_9] = 7,  /* r15 callee saved */
-	[BPF_REG_FP] = 5, /* rbp readonly */
-	[AUX_REG] = 3,    /* r11 temp register */
-};
-
-/* is_ereg() == true if BPF register 'reg' maps to x64 r8..r15
- * which need extra byte of encoding.
- * rax,rcx,...,rbp have simpler encoding
- */
-static inline bool is_ereg(u32 reg)
-{
-	if (reg == BPF_REG_5 || reg == AUX_REG ||
-	    (reg >= BPF_REG_7 && reg <= BPF_REG_9))
-		return true;
-	else
-		return false;
-}
-
-/* add modifiers if 'reg' maps to x64 registers r8..r15 */
-static inline u8 add_1mod(u8 byte, u32 reg)
-{
-	if (is_ereg(reg))
-		byte |= 1;
-	return byte;
-}
-
-static inline u8 add_2mod(u8 byte, u32 r1, u32 r2)
-{
-	if (is_ereg(r1))
-		byte |= 1;
-	if (is_ereg(r2))
-		byte |= 4;
-	return byte;
-}
-
-/* encode 'dst_reg' register into x64 opcode 'byte' */
-static inline u8 add_1reg(u8 byte, u32 dst_reg)
-{
-	return byte + reg2hex[dst_reg];
-}
-
-/* encode 'dst_reg' and 'src_reg' registers into x64 opcode 'byte' */
-static inline u8 add_2reg(u8 byte, u32 dst_reg, u32 src_reg)
-{
-	return byte + reg2hex[dst_reg] + (reg2hex[src_reg] << 3);
-}
-
-struct jit_context {
-	unsigned int cleanup_addr; /* epilogue code offset */
-	bool seen_ld_abs;
-};
-
-static int do_jit(struct sk_filter *bpf_prog, int *addrs, u8 *image,
-		  int oldproglen, struct jit_context *ctx)
-{
-	struct sock_filter_int *insn = bpf_prog->insnsi;
-	int insn_cnt = bpf_prog->len;
-	u8 temp[64];
-	int i;
-	int proglen = 0;
-	u8 *prog = temp;
-	int stacksize = MAX_BPF_STACK +
-		32 /* space for rbx, r13, r14, r15 */ +
-		8 /* space for skb_copy_bits() buffer */;
-
-	EMIT1(0x55); /* push rbp */
-	EMIT3(0x48, 0x89, 0xE5); /* mov rbp,rsp */
-
-	/* sub rsp, stacksize */
-	EMIT3_off32(0x48, 0x81, 0xEC, stacksize);
-
-	/* all classic BPF filters use R6(rbx) save it */
-
-	/* mov qword ptr [rbp-X],rbx */
-	EMIT3_off32(0x48, 0x89, 0x9D, -stacksize);
-
-	/* sk_convert_filter() maps classic BPF register X to R7 and uses R8
-	 * as temporary, so all tcpdump filters need to spill/fill R7(r13) and
-	 * R8(r14). R9(r15) spill could be made conditional, but there is only
-	 * one 'bpf_error' return path out of helper functions inside bpf_jit.S
-	 * The overhead of extra spill is negligible for any filter other
-	 * than synthetic ones. Therefore not worth adding complexity.
-	 */
-
-	/* mov qword ptr [rbp-X],r13 */
-	EMIT3_off32(0x4C, 0x89, 0xAD, -stacksize + 8);
-	/* mov qword ptr [rbp-X],r14 */
-	EMIT3_off32(0x4C, 0x89, 0xB5, -stacksize + 16);
-	/* mov qword ptr [rbp-X],r15 */
-	EMIT3_off32(0x4C, 0x89, 0xBD, -stacksize + 24);
-
-	/* clear A and X registers */
-	EMIT2(0x31, 0xc0); /* xor eax, eax */
-	EMIT3(0x4D, 0x31, 0xED); /* xor r13, r13 */
-
-	if (ctx->seen_ld_abs) {
-		/* r9d : skb->len - skb->data_len (headlen)
-		 * r10 : skb->data
-		 */
-		if (is_imm8(offsetof(struct sk_buff, len)))
-			/* mov %r9d, off8(%rdi) */
-			EMIT4(0x44, 0x8b, 0x4f,
-			      offsetof(struct sk_buff, len));
-		else
-			/* mov %r9d, off32(%rdi) */
-			EMIT3_off32(0x44, 0x8b, 0x8f,
-				    offsetof(struct sk_buff, len));
-
-		if (is_imm8(offsetof(struct sk_buff, data_len)))
-			/* sub %r9d, off8(%rdi) */
-			EMIT4(0x44, 0x2b, 0x4f,
-			      offsetof(struct sk_buff, data_len));
-		else
-			EMIT3_off32(0x44, 0x2b, 0x8f,
-				    offsetof(struct sk_buff, data_len));
-
-		if (is_imm8(offsetof(struct sk_buff, data)))
-			/* mov %r10, off8(%rdi) */
-			EMIT4(0x4c, 0x8b, 0x57,
-			      offsetof(struct sk_buff, data));
-		else
-			/* mov %r10, off32(%rdi) */
-			EMIT3_off32(0x4c, 0x8b, 0x97,
-				    offsetof(struct sk_buff, data));
-	}
-
-	for (i = 0; i < insn_cnt; i++, insn++) {
-		const s32 imm32 = insn->imm;
-		u32 dst_reg = insn->dst_reg;
-		u32 src_reg = insn->src_reg;
-		u8 b1 = 0, b2 = 0, b3 = 0;
-		s64 jmp_offset;
-		u8 jmp_cond;
-		int ilen;
-		u8 *func;
-
-		switch (insn->code) {
-			/* ALU */
-		case BPF_ALU | BPF_ADD | BPF_X:
-		case BPF_ALU | BPF_SUB | BPF_X:
-		case BPF_ALU | BPF_AND | BPF_X:
-		case BPF_ALU | BPF_OR | BPF_X:
-		case BPF_ALU | BPF_XOR | BPF_X:
-		case BPF_ALU64 | BPF_ADD | BPF_X:
-		case BPF_ALU64 | BPF_SUB | BPF_X:
-		case BPF_ALU64 | BPF_AND | BPF_X:
-		case BPF_ALU64 | BPF_OR | BPF_X:
-		case BPF_ALU64 | BPF_XOR | BPF_X:
-			switch (BPF_OP(insn->code)) {
-			case BPF_ADD: b2 = 0x01; break;
-			case BPF_SUB: b2 = 0x29; break;
-			case BPF_AND: b2 = 0x21; break;
-			case BPF_OR: b2 = 0x09; break;
-			case BPF_XOR: b2 = 0x31; break;
-			}
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				EMIT1(add_2mod(0x48, dst_reg, src_reg));
-			else if (is_ereg(dst_reg) || is_ereg(src_reg))
-				EMIT1(add_2mod(0x40, dst_reg, src_reg));
-			EMIT2(b2, add_2reg(0xC0, dst_reg, src_reg));
-			break;
-
-			/* mov dst, src */
-		case BPF_ALU64 | BPF_MOV | BPF_X:
-			EMIT_mov(dst_reg, src_reg);
-			break;
-
-			/* mov32 dst, src */
-		case BPF_ALU | BPF_MOV | BPF_X:
-			if (is_ereg(dst_reg) || is_ereg(src_reg))
-				EMIT1(add_2mod(0x40, dst_reg, src_reg));
-			EMIT2(0x89, add_2reg(0xC0, dst_reg, src_reg));
-			break;
-
-			/* neg dst */
-		case BPF_ALU | BPF_NEG:
-		case BPF_ALU64 | BPF_NEG:
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				EMIT1(add_1mod(0x48, dst_reg));
-			else if (is_ereg(dst_reg))
-				EMIT1(add_1mod(0x40, dst_reg));
-			EMIT2(0xF7, add_1reg(0xD8, dst_reg));
-			break;
-
-		case BPF_ALU | BPF_ADD | BPF_K:
-		case BPF_ALU | BPF_SUB | BPF_K:
-		case BPF_ALU | BPF_AND | BPF_K:
-		case BPF_ALU | BPF_OR | BPF_K:
-		case BPF_ALU | BPF_XOR | BPF_K:
-		case BPF_ALU64 | BPF_ADD | BPF_K:
-		case BPF_ALU64 | BPF_SUB | BPF_K:
-		case BPF_ALU64 | BPF_AND | BPF_K:
-		case BPF_ALU64 | BPF_OR | BPF_K:
-		case BPF_ALU64 | BPF_XOR | BPF_K:
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				EMIT1(add_1mod(0x48, dst_reg));
-			else if (is_ereg(dst_reg))
-				EMIT1(add_1mod(0x40, dst_reg));
-
-			switch (BPF_OP(insn->code)) {
-			case BPF_ADD: b3 = 0xC0; break;
-			case BPF_SUB: b3 = 0xE8; break;
-			case BPF_AND: b3 = 0xE0; break;
-			case BPF_OR: b3 = 0xC8; break;
-			case BPF_XOR: b3 = 0xF0; break;
-			}
-
-			if (is_imm8(imm32))
-				EMIT3(0x83, add_1reg(b3, dst_reg), imm32);
-			else
-				EMIT2_off32(0x81, add_1reg(b3, dst_reg), imm32);
-			break;
-
-		case BPF_ALU64 | BPF_MOV | BPF_K:
-			/* optimization: if imm32 is positive,
-			 * use 'mov eax, imm32' (which zero-extends imm32)
-			 * to save 2 bytes
-			 */
-			if (imm32 < 0) {
-				/* 'mov rax, imm32' sign extends imm32 */
-				b1 = add_1mod(0x48, dst_reg);
-				b2 = 0xC7;
-				b3 = 0xC0;
-				EMIT3_off32(b1, b2, add_1reg(b3, dst_reg), imm32);
-				break;
-			}
-
-		case BPF_ALU | BPF_MOV | BPF_K:
-			/* mov %eax, imm32 */
-			if (is_ereg(dst_reg))
-				EMIT1(add_1mod(0x40, dst_reg));
-			EMIT1_off32(add_1reg(0xB8, dst_reg), imm32);
-			break;
-
-			/* dst %= src, dst /= src, dst %= imm32, dst /= imm32 */
-		case BPF_ALU | BPF_MOD | BPF_X:
-		case BPF_ALU | BPF_DIV | BPF_X:
-		case BPF_ALU | BPF_MOD | BPF_K:
-		case BPF_ALU | BPF_DIV | BPF_K:
-		case BPF_ALU64 | BPF_MOD | BPF_X:
-		case BPF_ALU64 | BPF_DIV | BPF_X:
-		case BPF_ALU64 | BPF_MOD | BPF_K:
-		case BPF_ALU64 | BPF_DIV | BPF_K:
-			EMIT1(0x50); /* push rax */
-			EMIT1(0x52); /* push rdx */
-
-			if (BPF_SRC(insn->code) == BPF_X)
-				/* mov r11, src_reg */
-				EMIT_mov(AUX_REG, src_reg);
-			else
-				/* mov r11, imm32 */
-				EMIT3_off32(0x49, 0xC7, 0xC3, imm32);
-
-			/* mov rax, dst_reg */
-			EMIT_mov(BPF_REG_0, dst_reg);
-
-			/* xor edx, edx
-			 * equivalent to 'xor rdx, rdx', but one byte less
-			 */
-			EMIT2(0x31, 0xd2);
-
-			if (BPF_SRC(insn->code) == BPF_X) {
-				/* if (src_reg == 0) return 0 */
-
-				/* cmp r11, 0 */
-				EMIT4(0x49, 0x83, 0xFB, 0x00);
-
-				/* jne .+9 (skip over pop, pop, xor and jmp) */
-				EMIT2(X86_JNE, 1 + 1 + 2 + 5);
-				EMIT1(0x5A); /* pop rdx */
-				EMIT1(0x58); /* pop rax */
-				EMIT2(0x31, 0xc0); /* xor eax, eax */
-
-				/* jmp cleanup_addr
-				 * addrs[i] - 11, because there are 11 bytes
-				 * after this insn: div, mov, pop, pop, mov
-				 */
-				jmp_offset = ctx->cleanup_addr - (addrs[i] - 11);
-				EMIT1_off32(0xE9, jmp_offset);
-			}
-
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				/* div r11 */
-				EMIT3(0x49, 0xF7, 0xF3);
-			else
-				/* div r11d */
-				EMIT3(0x41, 0xF7, 0xF3);
-
-			if (BPF_OP(insn->code) == BPF_MOD)
-				/* mov r11, rdx */
-				EMIT3(0x49, 0x89, 0xD3);
-			else
-				/* mov r11, rax */
-				EMIT3(0x49, 0x89, 0xC3);
-
-			EMIT1(0x5A); /* pop rdx */
-			EMIT1(0x58); /* pop rax */
-
-			/* mov dst_reg, r11 */
-			EMIT_mov(dst_reg, AUX_REG);
-			break;
-
-		case BPF_ALU | BPF_MUL | BPF_K:
-		case BPF_ALU | BPF_MUL | BPF_X:
-		case BPF_ALU64 | BPF_MUL | BPF_K:
-		case BPF_ALU64 | BPF_MUL | BPF_X:
-			EMIT1(0x50); /* push rax */
-			EMIT1(0x52); /* push rdx */
-
-			/* mov r11, dst_reg */
-			EMIT_mov(AUX_REG, dst_reg);
-
-			if (BPF_SRC(insn->code) == BPF_X)
-				/* mov rax, src_reg */
-				EMIT_mov(BPF_REG_0, src_reg);
-			else
-				/* mov rax, imm32 */
-				EMIT3_off32(0x48, 0xC7, 0xC0, imm32);
-
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				EMIT1(add_1mod(0x48, AUX_REG));
-			else if (is_ereg(AUX_REG))
-				EMIT1(add_1mod(0x40, AUX_REG));
-			/* mul(q) r11 */
-			EMIT2(0xF7, add_1reg(0xE0, AUX_REG));
-
-			/* mov r11, rax */
-			EMIT_mov(AUX_REG, BPF_REG_0);
-
-			EMIT1(0x5A); /* pop rdx */
-			EMIT1(0x58); /* pop rax */
-
-			/* mov dst_reg, r11 */
-			EMIT_mov(dst_reg, AUX_REG);
-			break;
-
-			/* shifts */
-		case BPF_ALU | BPF_LSH | BPF_K:
-		case BPF_ALU | BPF_RSH | BPF_K:
-		case BPF_ALU | BPF_ARSH | BPF_K:
-		case BPF_ALU64 | BPF_LSH | BPF_K:
-		case BPF_ALU64 | BPF_RSH | BPF_K:
-		case BPF_ALU64 | BPF_ARSH | BPF_K:
-			if (BPF_CLASS(insn->code) == BPF_ALU64)
-				EMIT1(add_1mod(0x48, dst_reg));
-			else if (is_ereg(dst_reg))
-				EMIT1(add_1mod(0x40, dst_reg));
-
-			switch (BPF_OP(insn->code)) {
-			case BPF_LSH: b3 = 0xE0; break;
-			case BPF_RSH: b3 = 0xE8; break;
-			case BPF_ARSH: b3 = 0xF8; break;
-			}
-			EMIT3(0xC1, add_1reg(b3, dst_reg), imm32);
-			break;
-
-		case BPF_ALU | BPF_END | BPF_FROM_BE:
-			switch (imm32) {
-			case 16:
-				/* emit 'ror %ax, 8' to swap lower 2 bytes */
-				EMIT1(0x66);
-				if (is_ereg(dst_reg))
-					EMIT1(0x41);
-				EMIT3(0xC1, add_1reg(0xC8, dst_reg), 8);
-				break;
-			case 32:
-				/* emit 'bswap eax' to swap lower 4 bytes */
-				if (is_ereg(dst_reg))
-					EMIT2(0x41, 0x0F);
-				else
-					EMIT1(0x0F);
-				EMIT1(add_1reg(0xC8, dst_reg));
-				break;
-			case 64:
-				/* emit 'bswap rax' to swap 8 bytes */
-				EMIT3(add_1mod(0x48, dst_reg), 0x0F,
-				      add_1reg(0xC8, dst_reg));
-				break;
-			}
-			break;
-
-		case BPF_ALU | BPF_END | BPF_FROM_LE:
-			break;
-
-			/* ST: *(u8*)(dst_reg + off) = imm */
-		case BPF_ST | BPF_MEM | BPF_B:
-			if (is_ereg(dst_reg))
-				EMIT2(0x41, 0xC6);
-			else
-				EMIT1(0xC6);
-			goto st;
-		case BPF_ST | BPF_MEM | BPF_H:
-			if (is_ereg(dst_reg))
-				EMIT3(0x66, 0x41, 0xC7);
-			else
-				EMIT2(0x66, 0xC7);
-			goto st;
-		case BPF_ST | BPF_MEM | BPF_W:
-			if (is_ereg(dst_reg))
-				EMIT2(0x41, 0xC7);
-			else
-				EMIT1(0xC7);
-			goto st;
-		case BPF_ST | BPF_MEM | BPF_DW:
-			EMIT2(add_1mod(0x48, dst_reg), 0xC7);
-
-st:			if (is_imm8(insn->off))
-				EMIT2(add_1reg(0x40, dst_reg), insn->off);
-			else
-				EMIT1_off32(add_1reg(0x80, dst_reg), insn->off);
-
-			EMIT(imm32, bpf_size_to_x86_bytes(BPF_SIZE(insn->code)));
-			break;
-
-			/* STX: *(u8*)(dst_reg + off) = src_reg */
-		case BPF_STX | BPF_MEM | BPF_B:
-			/* emit 'mov byte ptr [rax + off], al' */
-			if (is_ereg(dst_reg) || is_ereg(src_reg) ||
-			    /* have to add extra byte for x86 SIL, DIL regs */
-			    src_reg == BPF_REG_1 || src_reg == BPF_REG_2)
-				EMIT2(add_2mod(0x40, dst_reg, src_reg), 0x88);
-			else
-				EMIT1(0x88);
-			goto stx;
-		case BPF_STX | BPF_MEM | BPF_H:
-			if (is_ereg(dst_reg) || is_ereg(src_reg))
-				EMIT3(0x66, add_2mod(0x40, dst_reg, src_reg), 0x89);
-			else
-				EMIT2(0x66, 0x89);
-			goto stx;
-		case BPF_STX | BPF_MEM | BPF_W:
-			if (is_ereg(dst_reg) || is_ereg(src_reg))
-				EMIT2(add_2mod(0x40, dst_reg, src_reg), 0x89);
-			else
-				EMIT1(0x89);
-			goto stx;
-		case BPF_STX | BPF_MEM | BPF_DW:
-			EMIT2(add_2mod(0x48, dst_reg, src_reg), 0x89);
-stx:			if (is_imm8(insn->off))
-				EMIT2(add_2reg(0x40, dst_reg, src_reg), insn->off);
-			else
-				EMIT1_off32(add_2reg(0x80, dst_reg, src_reg),
-					    insn->off);
-			break;
-
-			/* LDX: dst_reg = *(u8*)(src_reg + off) */
-		case BPF_LDX | BPF_MEM | BPF_B:
-			/* emit 'movzx rax, byte ptr [rax + off]' */
-			EMIT3(add_2mod(0x48, src_reg, dst_reg), 0x0F, 0xB6);
-			goto ldx;
-		case BPF_LDX | BPF_MEM | BPF_H:
-			/* emit 'movzx rax, word ptr [rax + off]' */
-			EMIT3(add_2mod(0x48, src_reg, dst_reg), 0x0F, 0xB7);
-			goto ldx;
-		case BPF_LDX | BPF_MEM | BPF_W:
-			/* emit 'mov eax, dword ptr [rax+0x14]' */
-			if (is_ereg(dst_reg) || is_ereg(src_reg))
-				EMIT2(add_2mod(0x40, src_reg, dst_reg), 0x8B);
-			else
-				EMIT1(0x8B);
-			goto ldx;
-		case BPF_LDX | BPF_MEM | BPF_DW:
-			/* emit 'mov rax, qword ptr [rax+0x14]' */
-			EMIT2(add_2mod(0x48, src_reg, dst_reg), 0x8B);
-ldx:			/* if insn->off == 0 we can save one extra byte, but
-			 * special case of x86 r13 which always needs an offset
-			 * is not worth the hassle
-			 */
-			if (is_imm8(insn->off))
-				EMIT2(add_2reg(0x40, src_reg, dst_reg), insn->off);
-			else
-				EMIT1_off32(add_2reg(0x80, src_reg, dst_reg),
-					    insn->off);
-			break;
-
-			/* STX XADD: lock *(u32*)(dst_reg + off) += src_reg */
-		case BPF_STX | BPF_XADD | BPF_W:
-			/* emit 'lock add dword ptr [rax + off], eax' */
-			if (is_ereg(dst_reg) || is_ereg(src_reg))
-				EMIT3(0xF0, add_2mod(0x40, dst_reg, src_reg), 0x01);
-			else
-				EMIT2(0xF0, 0x01);
-			goto xadd;
-		case BPF_STX | BPF_XADD | BPF_DW:
-			EMIT3(0xF0, add_2mod(0x48, dst_reg, src_reg), 0x01);
-xadd:			if (is_imm8(insn->off))
-				EMIT2(add_2reg(0x40, dst_reg, src_reg), insn->off);
-			else
-				EMIT1_off32(add_2reg(0x80, dst_reg, src_reg),
-					    insn->off);
-			break;
-
-			/* call */
-		case BPF_JMP | BPF_CALL:
-			func = (u8 *) __bpf_call_base + imm32;
-			jmp_offset = func - (image + addrs[i]);
-			if (ctx->seen_ld_abs) {
-				EMIT2(0x41, 0x52); /* push %r10 */
-				EMIT2(0x41, 0x51); /* push %r9 */
-				/* need to adjust jmp offset, since
-				 * pop %r9, pop %r10 take 4 bytes after call insn
-				 */
-				jmp_offset += 4;
-			}
-			if (!imm32 || !is_simm32(jmp_offset)) {
-				pr_err("unsupported bpf func %d addr %p image %p\n",
-				       imm32, func, image);
-				return -EINVAL;
-			}
-			EMIT1_off32(0xE8, jmp_offset);
-			if (ctx->seen_ld_abs) {
-				EMIT2(0x41, 0x59); /* pop %r9 */
-				EMIT2(0x41, 0x5A); /* pop %r10 */
-			}
-			break;
-
-			/* cond jump */
-		case BPF_JMP | BPF_JEQ | BPF_X:
-		case BPF_JMP | BPF_JNE | BPF_X:
-		case BPF_JMP | BPF_JGT | BPF_X:
-		case BPF_JMP | BPF_JGE | BPF_X:
-		case BPF_JMP | BPF_JSGT | BPF_X:
-		case BPF_JMP | BPF_JSGE | BPF_X:
-			/* cmp dst_reg, src_reg */
-			EMIT3(add_2mod(0x48, dst_reg, src_reg), 0x39,
-			      add_2reg(0xC0, dst_reg, src_reg));
-			goto emit_cond_jmp;
-
-		case BPF_JMP | BPF_JSET | BPF_X:
-			/* test dst_reg, src_reg */
-			EMIT3(add_2mod(0x48, dst_reg, src_reg), 0x85,
-			      add_2reg(0xC0, dst_reg, src_reg));
-			goto emit_cond_jmp;
-
-		case BPF_JMP | BPF_JSET | BPF_K:
-			/* test dst_reg, imm32 */
-			EMIT1(add_1mod(0x48, dst_reg));
-			EMIT2_off32(0xF7, add_1reg(0xC0, dst_reg), imm32);
-			goto emit_cond_jmp;
-
-		case BPF_JMP | BPF_JEQ | BPF_K:
-		case BPF_JMP | BPF_JNE | BPF_K:
-		case BPF_JMP | BPF_JGT | BPF_K:
-		case BPF_JMP | BPF_JGE | BPF_K:
-		case BPF_JMP | BPF_JSGT | BPF_K:
-		case BPF_JMP | BPF_JSGE | BPF_K:
-			/* cmp dst_reg, imm8/32 */
-			EMIT1(add_1mod(0x48, dst_reg));
-
-			if (is_imm8(imm32))
-				EMIT3(0x83, add_1reg(0xF8, dst_reg), imm32);
-			else
-				EMIT2_off32(0x81, add_1reg(0xF8, dst_reg), imm32);
-
-emit_cond_jmp:		/* convert BPF opcode to x86 */
-			switch (BPF_OP(insn->code)) {
-			case BPF_JEQ:
-				jmp_cond = X86_JE;
-				break;
-			case BPF_JSET:
-			case BPF_JNE:
-				jmp_cond = X86_JNE;
-				break;
-			case BPF_JGT:
-				/* GT is unsigned '>', JA in x86 */
-				jmp_cond = X86_JA;
-				break;
-			case BPF_JGE:
-				/* GE is unsigned '>=', JAE in x86 */
-				jmp_cond = X86_JAE;
-				break;
-			case BPF_JSGT:
-				/* signed '>', GT in x86 */
-				jmp_cond = X86_JG;
-				break;
-			case BPF_JSGE:
-				/* signed '>=', GE in x86 */
-				jmp_cond = X86_JGE;
-				break;
-			default: /* to silence gcc warning */
-				return -EFAULT;
-			}
-			jmp_offset = addrs[i + insn->off] - addrs[i];
-			if (is_imm8(jmp_offset)) {
-				EMIT2(jmp_cond, jmp_offset);
-			} else if (is_simm32(jmp_offset)) {
-				EMIT2_off32(0x0F, jmp_cond + 0x10, jmp_offset);
-			} else {
-				pr_err("cond_jmp gen bug %llx\n", jmp_offset);
-				return -EFAULT;
-			}
-
-			break;
-
-		case BPF_JMP | BPF_JA:
-			jmp_offset = addrs[i + insn->off] - addrs[i];
-			if (!jmp_offset)
-				/* optimize out nop jumps */
-				break;
-emit_jmp:
-			if (is_imm8(jmp_offset)) {
-				EMIT2(0xEB, jmp_offset);
-			} else if (is_simm32(jmp_offset)) {
-				EMIT1_off32(0xE9, jmp_offset);
-			} else {
-				pr_err("jmp gen bug %llx\n", jmp_offset);
-				return -EFAULT;
-			}
-			break;
-
-		case BPF_LD | BPF_IND | BPF_W:
-			func = sk_load_word;
-			goto common_load;
-		case BPF_LD | BPF_ABS | BPF_W:
-			func = CHOOSE_LOAD_FUNC(imm32, sk_load_word);
-common_load:		ctx->seen_ld_abs = true;
-			jmp_offset = func - (image + addrs[i]);
-			if (!func || !is_simm32(jmp_offset)) {
-				pr_err("unsupported bpf func %d addr %p image %p\n",
-				       imm32, func, image);
-				return -EINVAL;
-			}
-			if (BPF_MODE(insn->code) == BPF_ABS) {
-				/* mov %esi, imm32 */
-				EMIT1_off32(0xBE, imm32);
-			} else {
-				/* mov %rsi, src_reg */
-				EMIT_mov(BPF_REG_2, src_reg);
-				if (imm32) {
-					if (is_imm8(imm32))
-						/* add %esi, imm8 */
-						EMIT3(0x83, 0xC6, imm32);
-					else
-						/* add %esi, imm32 */
-						EMIT2_off32(0x81, 0xC6, imm32);
-				}
-			}
-			/* skb pointer is in R6 (%rbx), it will be copied into
-			 * %rdi if skb_copy_bits() call is necessary.
-			 * sk_load_* helpers also use %r10 and %r9d.
-			 * See bpf_jit.S
-			 */
-			EMIT1_off32(0xE8, jmp_offset); /* call */
-			break;
-
-		case BPF_LD | BPF_IND | BPF_H:
-			func = sk_load_half;
-			goto common_load;
-		case BPF_LD | BPF_ABS | BPF_H:
-			func = CHOOSE_LOAD_FUNC(imm32, sk_load_half);
-			goto common_load;
-		case BPF_LD | BPF_IND | BPF_B:
-			func = sk_load_byte;
-			goto common_load;
-		case BPF_LD | BPF_ABS | BPF_B:
-			func = CHOOSE_LOAD_FUNC(imm32, sk_load_byte);
-			goto common_load;
-
-		case BPF_JMP | BPF_EXIT:
-			if (i != insn_cnt - 1) {
-				jmp_offset = ctx->cleanup_addr - addrs[i];
-				goto emit_jmp;
-			}
-			/* update cleanup_addr */
-			ctx->cleanup_addr = proglen;
-			/* mov rbx, qword ptr [rbp-X] */
-			EMIT3_off32(0x48, 0x8B, 0x9D, -stacksize);
-			/* mov r13, qword ptr [rbp-X] */
-			EMIT3_off32(0x4C, 0x8B, 0xAD, -stacksize + 8);
-			/* mov r14, qword ptr [rbp-X] */
-			EMIT3_off32(0x4C, 0x8B, 0xB5, -stacksize + 16);
-			/* mov r15, qword ptr [rbp-X] */
-			EMIT3_off32(0x4C, 0x8B, 0xBD, -stacksize + 24);
-
-			EMIT1(0xC9); /* leave */
-			EMIT1(0xC3); /* ret */
-			break;
-
-		default:
-			/* By design x64 JIT should support all BPF instructions
-			 * This error will be seen if new instruction was added
-			 * to interpreter, but not to JIT
-			 * or if there is junk in sk_filter
-			 */
-			pr_err("bpf_jit: unknown opcode %02x\n", insn->code);
-			return -EINVAL;
-		}
-
-		ilen = prog - temp;
-		if (image) {
-			if (unlikely(proglen + ilen > oldproglen)) {
-				pr_err("bpf_jit_compile fatal error\n");
-				return -EFAULT;
-			}
-			memcpy(image + proglen, temp, ilen);
-		}
-		proglen += ilen;
-		addrs[i] = proglen;
-		prog = temp;
-	}
-	return proglen;
-}
-
-void bpf_jit_compile(struct sk_filter *prog)
-{
-}
-
-void bpf_int_jit_compile(struct sk_filter *prog)
-{
-	struct bpf_binary_header *header = NULL;
-	int proglen, oldproglen = 0;
-	struct jit_context ctx = {};
+void bpf_jit_compile(struct sk_filter *fp)
+{
+	u8 temp[MAX_INSTR_CODE_SIZE];
+	u8 *prog;
+	unsigned int proglen, oldproglen = 0;
+	int ilen, i;
+	int t_offset, f_offset;
+	u8 t_op, f_op, seen = 0, pass;
 	u8 *image = NULL;
-	int *addrs;
-	int pass;
-	int i;
+	u8 *header = NULL;
+	u8 *func;
+	int pc_ret0 = -1; /* bpf index of first RET #0 instruction (if any) */
+	unsigned int cleanup_addr; /* epilogue code offset */
+	unsigned int *addrs;
+	const struct sock_filter *filter = fp->insns;
+	int flen = fp->len;
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+	unsigned int randkey;
+#endif
 
 	if (!bpf_jit_enable)
 		return;
 
-	if (!prog || !prog->len)
-		return;
-
-	addrs = kmalloc(prog->len * sizeof(*addrs), GFP_KERNEL);
-	if (!addrs)
+	addrs = kmalloc(flen * sizeof(*addrs), GFP_KERNEL);
+	if (addrs == NULL)
 		return;
 
 	/* Before first pass, make a rough estimation of addrs[]
-	 * each bpf instruction is translated to less than 64 bytes
+	 * each bpf instruction is translated to less than MAX_INSTR_CODE_SIZE bytes
 	 */
-	for (proglen = 0, i = 0; i < prog->len; i++) {
-		proglen += 64;
+	for (proglen = 0, i = 0; i < flen; i++) {
+		proglen += MAX_INSTR_CODE_SIZE;
 		addrs[i] = proglen;
 	}
-	ctx.cleanup_addr = proglen;
+	cleanup_addr = proglen; /* epilogue address */
 
 	for (pass = 0; pass < 10; pass++) {
-		proglen = do_jit(prog, addrs, image, oldproglen, &ctx);
-		if (proglen <= 0) {
-			image = NULL;
-			if (header)
-				module_free(NULL, header);
-			goto out;
+		u8 seen_or_pass0 = (pass == 0) ? (SEEN_XREG | SEEN_DATAREF | SEEN_MEM) : seen;
+		/* no prologue/epilogue for trivial filters (RET something) */
+		proglen = 0;
+		prog = temp;
+
+		if (seen_or_pass0) {
+			EMIT4(0x55, 0x48, 0x89, 0xe5); /* push %rbp; mov %rsp,%rbp */
+			EMIT4(0x48, 0x83, 0xec, 96);	/* subq  $96,%rsp	*/
+			/* note : must save %rbx in case bpf_error is hit */
+			if (seen_or_pass0 & (SEEN_XREG | SEEN_DATAREF))
+				EMIT4(0x48, 0x89, 0x5d, 0xf8); /* mov %rbx, -8(%rbp) */
+			if (seen_or_pass0 & SEEN_XREG)
+				CLEAR_X(); /* make sure we dont leek kernel memory */
+
+			/*
+			 * If this filter needs to access skb data,
+			 * loads r9 and r8 with :
+			 *  r9 = skb->len - skb->data_len
+			 *  r8 = skb->data
+			 */
+			if (seen_or_pass0 & SEEN_DATAREF) {
+				if (offsetof(struct sk_buff, len) <= 127)
+					/* mov    off8(%rdi),%r9d */
+					EMIT4(0x44, 0x8b, 0x4f, offsetof(struct sk_buff, len));
+				else {
+					/* mov    off32(%rdi),%r9d */
+					EMIT3(0x44, 0x8b, 0x8f);
+					EMIT(offsetof(struct sk_buff, len), 4);
+				}
+				if (is_imm8(offsetof(struct sk_buff, data_len)))
+					/* sub    off8(%rdi),%r9d */
+					EMIT4(0x44, 0x2b, 0x4f, offsetof(struct sk_buff, data_len));
+				else {
+					EMIT3(0x44, 0x2b, 0x8f);
+					EMIT(offsetof(struct sk_buff, data_len), 4);
+				}
+
+				if (is_imm8(offsetof(struct sk_buff, data)))
+					/* mov off8(%rdi),%r8 */
+					EMIT4(0x4c, 0x8b, 0x47, offsetof(struct sk_buff, data));
+				else {
+					/* mov off32(%rdi),%r8 */
+					EMIT3(0x4c, 0x8b, 0x87);
+					EMIT(offsetof(struct sk_buff, data), 4);
+				}
+			}
 		}
+
+		switch (filter[0].code) {
+		case BPF_S_RET_K:
+		case BPF_S_LD_W_LEN:
+		case BPF_S_ANC_PROTOCOL:
+		case BPF_S_ANC_IFINDEX:
+		case BPF_S_ANC_MARK:
+		case BPF_S_ANC_RXHASH:
+		case BPF_S_ANC_CPU:
+		case BPF_S_ANC_VLAN_TAG:
+		case BPF_S_ANC_VLAN_TAG_PRESENT:
+		case BPF_S_ANC_QUEUE:
+		case BPF_S_ANC_PKTTYPE:
+		case BPF_S_LD_W_ABS:
+		case BPF_S_LD_H_ABS:
+		case BPF_S_LD_B_ABS:
+			/* first instruction sets A register (or is RET 'constant') */
+			break;
+		default:
+			/* make sure we dont leak kernel information to user */
+			CLEAR_A(); /* A = 0 */
+		}
+
+		for (i = 0; i < flen; i++) {
+			unsigned int K = filter[i].k;
+
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+			randkey = prandom_u32();
+#endif
+
+			switch (filter[i].code) {
+			case BPF_S_ALU_ADD_X: /* A += X; */
+				seen |= SEEN_XREG;
+				EMIT2(0x01, 0xd8);		/* add %ebx,%eax */
+				break;
+			case BPF_S_ALU_ADD_K: /* A += K; */
+				if (!K)
+					break;
+				if (is_imm8(K))
+					EMIT3(0x83, 0xc0, K);	/* add imm8,%eax */
+				else
+					EMIT1_off32(0x05, K);	/* add imm32,%eax */
+				break;
+			case BPF_S_ALU_SUB_X: /* A -= X; */
+				seen |= SEEN_XREG;
+				EMIT2(0x29, 0xd8);		/* sub    %ebx,%eax */
+				break;
+			case BPF_S_ALU_SUB_K: /* A -= K */
+				if (!K)
+					break;
+				if (is_imm8(K))
+					EMIT3(0x83, 0xe8, K); /* sub imm8,%eax */
+				else
+					EMIT1_off32(0x2d, K); /* sub imm32,%eax */
+				break;
+			case BPF_S_ALU_MUL_X: /* A *= X; */
+				seen |= SEEN_XREG;
+				EMIT3(0x0f, 0xaf, 0xc3);	/* imul %ebx,%eax */
+				break;
+			case BPF_S_ALU_MUL_K: /* A *= K */
+				if (is_imm8(K))
+					EMIT3(0x6b, 0xc0, K); /* imul imm8,%eax,%eax */
+				else
+					EMIT2_off32(0x69, 0xc0, K); /* imul imm32,%eax */
+				break;
+			case BPF_S_ALU_DIV_X: /* A /= X; */
+				seen |= SEEN_XREG;
+				EMIT2(0x85, 0xdb);	/* test %ebx,%ebx */
+				if (pc_ret0 > 0) {
+					/* addrs[pc_ret0 - 1] is start address of target
+					 * (addrs[i] - 4) is the address following this jmp
+					 * ("xor %edx,%edx; div %ebx" being 4 bytes long)
+					 */
+					EMIT_COND_JMP(X86_JE, addrs[pc_ret0 - 1] -
+								(addrs[i] - 4));
+				} else {
+					EMIT_COND_JMP(X86_JNE, 2 + 5);
+					CLEAR_A();
+					EMIT1_off32(0xe9, cleanup_addr - (addrs[i] - 4)); /* jmp .+off32 */
+				}
+				EMIT4(0x31, 0xd2, 0xf7, 0xf3); /* xor %edx,%edx; div %ebx */
+				break;
+			case BPF_S_ALU_MOD_X: /* A %= X; */
+				seen |= SEEN_XREG;
+				EMIT2(0x85, 0xdb);	/* test %ebx,%ebx */
+				if (pc_ret0 > 0) {
+					/* addrs[pc_ret0 - 1] is start address of target
+					 * (addrs[i] - 6) is the address following this jmp
+					 * ("xor %edx,%edx; div %ebx;mov %edx,%eax" being 6 bytes long)
+					 */
+					EMIT_COND_JMP(X86_JE, addrs[pc_ret0 - 1] -
+								(addrs[i] - 6));
+				} else {
+					EMIT_COND_JMP(X86_JNE, 2 + 5);
+					CLEAR_A();
+					EMIT1_off32(0xe9, cleanup_addr - (addrs[i] - 6)); /* jmp .+off32 */
+				}
+				EMIT2(0x31, 0xd2);	/* xor %edx,%edx */
+				EMIT2(0xf7, 0xf3);	/* div %ebx */
+				EMIT2(0x89, 0xd0);	/* mov %edx,%eax */
+				break;
+			case BPF_S_ALU_MOD_K: /* A %= K; */
+				if (K == 1) {
+					CLEAR_A();
+					break;
+				}
+				EMIT2(0x31, 0xd2);	/* xor %edx,%edx */
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+				DILUTE_CONST_SEQUENCE(K, randkey);
+#else
+				EMIT1(0xb9);EMIT(K, 4);	/* mov imm32,%ecx */
+#endif
+				EMIT2(0xf7, 0xf1);	/* div %ecx */
+				EMIT2(0x89, 0xd0);	/* mov %edx,%eax */
+				break;
+			case BPF_S_ALU_DIV_K: /* A /= K */
+				if (K == 1)
+					break;
+				EMIT2(0x31, 0xd2);	/* xor %edx,%edx */
+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
+				DILUTE_CONST_SEQUENCE(K, randkey);
+#else
+				EMIT1(0xb9);EMIT(K, 4);	/* mov imm32,%ecx */
+#endif
+				EMIT2(0xf7, 0xf1);	/* div %ecx */
+				break;
+			case BPF_S_ALU_AND_X:
+				seen |= SEEN_XREG;
+				EMIT2(0x21, 0xd8);		/* and %ebx,%eax */
+				break;
+			case BPF_S_ALU_AND_K:
+				if (K >= 0xFFFFFF00) {
+					EMIT2(0x24, K & 0xFF); /* and imm8,%al */
+				} else if (K >= 0xFFFF0000) {
+					EMIT2(0x66, 0x25);	/* and imm16,%ax */
+					EMIT(K, 2);
+				} else {
+					EMIT1_off32(0x25, K);	/* and imm32,%eax */
+				}
+				break;
+			case BPF_S_ALU_OR_X:
+				seen |= SEEN_XREG;
+				EMIT2(0x09, 0xd8);		/* or %ebx,%eax */
+				break;
+			case BPF_S_ALU_OR_K:
+				if (is_imm8(K))
+					EMIT3(0x83, 0xc8, K); /* or imm8,%eax */
+				else
+					EMIT1_off32(0x0d, K);	/* or imm32,%eax */
+				break;
+			case BPF_S_ANC_ALU_XOR_X: /* A ^= X; */
+			case BPF_S_ALU_XOR_X:
+				seen |= SEEN_XREG;
+				EMIT2(0x31, 0xd8);		/* xor %ebx,%eax */
+				break;
+			case BPF_S_ALU_XOR_K: /* A ^= K; */
+				if (K == 0)
+					break;
+				if (is_imm8(K))
+					EMIT3(0x83, 0xf0, K);	/* xor imm8,%eax */
+				else
+					EMIT1_off32(0x35, K);	/* xor imm32,%eax */
+				break;
+			case BPF_S_ALU_LSH_X: /* A <<= X; */
+				seen |= SEEN_XREG;
+				EMIT4(0x89, 0xd9, 0xd3, 0xe0);	/* mov %ebx,%ecx; shl %cl,%eax */
+				break;
+			case BPF_S_ALU_LSH_K:
+				if (K == 0)
+					break;
+				else if (K == 1)
+					EMIT2(0xd1, 0xe0); /* shl %eax */
+				else
+					EMIT3(0xc1, 0xe0, K);
+				break;
+			case BPF_S_ALU_RSH_X: /* A >>= X; */
+				seen |= SEEN_XREG;
+				EMIT4(0x89, 0xd9, 0xd3, 0xe8);	/* mov %ebx,%ecx; shr %cl,%eax */
+				break;
+			case BPF_S_ALU_RSH_K: /* A >>= K; */
+				if (K == 0)
+					break;
+				else if (K == 1)
+					EMIT2(0xd1, 0xe8); /* shr %eax */
+				else
+					EMIT3(0xc1, 0xe8, K);
+				break;
+			case BPF_S_ALU_NEG:
+				EMIT2(0xf7, 0xd8);		/* neg %eax */
+				break;
+			case BPF_S_RET_K:
+				if (!K) {
+					if (pc_ret0 == -1)
+						pc_ret0 = i;
+					CLEAR_A();
+				} else {
+					EMIT1_off32(0xb8, K);	/* mov $imm32,%eax */
+				}
+				/* fallinto */
+			case BPF_S_RET_A:
+				if (seen_or_pass0) {
+					if (i != flen - 1) {
+						EMIT_JMP(cleanup_addr - addrs[i]);
+						break;
+					}
+					if (seen_or_pass0 & SEEN_XREG)
+						EMIT4(0x48, 0x8b, 0x5d, 0xf8);  /* mov  -8(%rbp),%rbx */
+					EMIT1(0xc9);		/* leaveq */
+				}
+				EMIT1(0xc3);		/* ret */
+				break;
+			case BPF_S_MISC_TAX: /* X = A */
+				seen |= SEEN_XREG;
+				EMIT2(0x89, 0xc3);	/* mov    %eax,%ebx */
+				break;
+			case BPF_S_MISC_TXA: /* A = X */
+				seen |= SEEN_XREG;
+				EMIT2(0x89, 0xd8);	/* mov    %ebx,%eax */
+				break;
+			case BPF_S_LD_IMM: /* A = K */
+				if (!K)
+					CLEAR_A();
+				else
+					EMIT1_off32(0xb8, K); /* mov $imm32,%eax */
+				break;
+			case BPF_S_LDX_IMM: /* X = K */
+				seen |= SEEN_XREG;
+				if (!K)
+					CLEAR_X();
+				else
+					EMIT1_off32(0xbb, K); /* mov $imm32,%ebx */
+				break;
+			case BPF_S_LD_MEM: /* A = mem[K] : mov off8(%rbp),%eax */
+				seen |= SEEN_MEM;
+				EMIT3(0x8b, 0x45, 0xf0 - K*4);
+				break;
+			case BPF_S_LDX_MEM: /* X = mem[K] : mov off8(%rbp),%ebx */
+				seen |= SEEN_XREG | SEEN_MEM;
+				EMIT3(0x8b, 0x5d, 0xf0 - K*4);
+				break;
+			case BPF_S_ST: /* mem[K] = A : mov %eax,off8(%rbp) */
+				seen |= SEEN_MEM;
+				EMIT3(0x89, 0x45, 0xf0 - K*4);
+				break;
+			case BPF_S_STX: /* mem[K] = X : mov %ebx,off8(%rbp) */
+				seen |= SEEN_XREG | SEEN_MEM;
+				EMIT3(0x89, 0x5d, 0xf0 - K*4);
+				break;
+			case BPF_S_LD_W_LEN: /*	A = skb->len; */
+				BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, len) != 4);
+				if (is_imm8(offsetof(struct sk_buff, len)))
+					/* mov    off8(%rdi),%eax */
+					EMIT3(0x8b, 0x47, offsetof(struct sk_buff, len));
+				else {
+					EMIT2(0x8b, 0x87);
+					EMIT(offsetof(struct sk_buff, len), 4);
+				}
+				break;
+			case BPF_S_LDX_W_LEN: /* X = skb->len; */
+				seen |= SEEN_XREG;
+				if (is_imm8(offsetof(struct sk_buff, len)))
+					/* mov off8(%rdi),%ebx */
+					EMIT3(0x8b, 0x5f, offsetof(struct sk_buff, len));
+				else {
+					EMIT2(0x8b, 0x9f);
+					EMIT(offsetof(struct sk_buff, len), 4);
+				}
+				break;
+			case BPF_S_ANC_PROTOCOL: /* A = ntohs(skb->protocol); */
+				BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, protocol) != 2);
+				if (is_imm8(offsetof(struct sk_buff, protocol))) {
+					/* movzwl off8(%rdi),%eax */
+					EMIT4(0x0f, 0xb7, 0x47, offsetof(struct sk_buff, protocol));
+				} else {
+					EMIT3(0x0f, 0xb7, 0x87); /* movzwl off32(%rdi),%eax */
+					EMIT(offsetof(struct sk_buff, protocol), 4);
+				}
+				EMIT2(0x86, 0xc4); /* ntohs() : xchg   %al,%ah */
+				break;
+			case BPF_S_ANC_IFINDEX:
+				if (is_imm8(offsetof(struct sk_buff, dev))) {
+					/* movq off8(%rdi),%rax */
+					EMIT4(0x48, 0x8b, 0x47, offsetof(struct sk_buff, dev));
+				} else {
+					EMIT3(0x48, 0x8b, 0x87); /* movq off32(%rdi),%rax */
+					EMIT(offsetof(struct sk_buff, dev), 4);
+				}
+				EMIT3(0x48, 0x85, 0xc0);	/* test %rax,%rax */
+				EMIT_COND_JMP(X86_JE, cleanup_addr - (addrs[i] - 6));
+				BUILD_BUG_ON(FIELD_SIZEOF(struct net_device, ifindex) != 4);
+				EMIT2(0x8b, 0x80);	/* mov off32(%rax),%eax */
+				EMIT(offsetof(struct net_device, ifindex), 4);
+				break;
+			case BPF_S_ANC_MARK:
+				BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, mark) != 4);
+				if (is_imm8(offsetof(struct sk_buff, mark))) {
+					/* mov off8(%rdi),%eax */
+					EMIT3(0x8b, 0x47, offsetof(struct sk_buff, mark));
+				} else {
+					EMIT2(0x8b, 0x87);
+					EMIT(offsetof(struct sk_buff, mark), 4);
+				}
+				break;
+			case BPF_S_ANC_RXHASH:
+				BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, hash) != 4);
+				if (is_imm8(offsetof(struct sk_buff, hash))) {
+					/* mov off8(%rdi),%eax */
+					EMIT3(0x8b, 0x47, offsetof(struct sk_buff, hash));
+				} else {
+					EMIT2(0x8b, 0x87);
+					EMIT(offsetof(struct sk_buff, hash), 4);
+				}
+				break;
+			case BPF_S_ANC_QUEUE:
+				BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, queue_mapping) != 2);
+				if (is_imm8(offsetof(struct sk_buff, queue_mapping))) {
+					/* movzwl off8(%rdi),%eax */
+					EMIT4(0x0f, 0xb7, 0x47, offsetof(struct sk_buff, queue_mapping));
+				} else {
+					EMIT3(0x0f, 0xb7, 0x87); /* movzwl off32(%rdi),%eax */
+					EMIT(offsetof(struct sk_buff, queue_mapping), 4);
+				}
+				break;
+			case BPF_S_ANC_CPU:
+#ifdef CONFIG_SMP
+				EMIT4(0x65, 0x8b, 0x04, 0x25); /* mov %gs:off32,%eax */
+				EMIT((u32)(unsigned long)&cpu_number, 4); /* A = smp_processor_id(); */
+#else
+				CLEAR_A();
+#endif
+				break;
+			case BPF_S_ANC_VLAN_TAG:
+			case BPF_S_ANC_VLAN_TAG_PRESENT:
+				BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2);
+				if (is_imm8(offsetof(struct sk_buff, vlan_tci))) {
+					/* movzwl off8(%rdi),%eax */
+					EMIT4(0x0f, 0xb7, 0x47, offsetof(struct sk_buff, vlan_tci));
+				} else {
+					EMIT3(0x0f, 0xb7, 0x87); /* movzwl off32(%rdi),%eax */
+					EMIT(offsetof(struct sk_buff, vlan_tci), 4);
+				}
+				BUILD_BUG_ON(VLAN_TAG_PRESENT != 0x1000);
+				if (filter[i].code == BPF_S_ANC_VLAN_TAG) {
+					EMIT3(0x80, 0xe4, 0xef); /* and    $0xef,%ah */
+				} else {
+					EMIT3(0xc1, 0xe8, 0x0c); /* shr    $0xc,%eax */
+					EMIT3(0x83, 0xe0, 0x01); /* and    $0x1,%eax */
+				}
+				break;
+			case BPF_S_ANC_PKTTYPE:
+			{
+				int off = pkt_type_offset();
+
+				if (off < 0)
+					goto out;
+				if (is_imm8(off)) {
+					/* movzbl off8(%rdi),%eax */
+					EMIT4(0x0f, 0xb6, 0x47, off);
+				} else {
+					/* movbl off32(%rdi),%eax */
+					EMIT3(0x0f, 0xb6, 0x87);
+					EMIT(off, 4);
+				}
+				EMIT3(0x83, 0xe0, PKT_TYPE_MAX); /* and    $0x7,%eax */
+				break;
+			}
+			case BPF_S_LD_W_ABS:
+				func = CHOOSE_LOAD_FUNC(K, sk_load_word);
+common_load:			seen |= SEEN_DATAREF;
+				t_offset = func - (image + addrs[i]);
+				EMIT1_off32(0xbe, K); /* mov imm32,%esi */
+				EMIT1_off32(0xe8, t_offset); /* call */
+				break;
+			case BPF_S_LD_H_ABS:
+				func = CHOOSE_LOAD_FUNC(K, sk_load_half);
+				goto common_load;
+			case BPF_S_LD_B_ABS:
+				func = CHOOSE_LOAD_FUNC(K, sk_load_byte);
+				goto common_load;
+			case BPF_S_LDX_B_MSH:
+				func = CHOOSE_LOAD_FUNC(K, sk_load_byte_msh);
+				seen |= SEEN_DATAREF | SEEN_XREG;
+				t_offset = func - (image + addrs[i]);
+				EMIT1_off32(0xbe, K);	/* mov imm32,%esi */
+				EMIT1_off32(0xe8, t_offset); /* call sk_load_byte_msh */
+				break;
+			case BPF_S_LD_W_IND:
+				func = sk_load_word;
+common_load_ind:		seen |= SEEN_DATAREF | SEEN_XREG;
+				t_offset = func - (image + addrs[i]);
+				if (K) {
+					if (is_imm8(K)) {
+						EMIT3(0x8d, 0x73, K); /* lea imm8(%rbx), %esi */
+					} else {
+						EMIT2_off32(0x8d, 0xb3, K); /* lea imm32(%rbx),%esi */
+					}
+				} else {
+					EMIT2(0x89,0xde); /* mov %ebx,%esi */
+				}
+				EMIT1_off32(0xe8, t_offset);	/* call sk_load_xxx_ind */
+				break;
+			case BPF_S_LD_H_IND:
+				func = sk_load_half;
+				goto common_load_ind;
+			case BPF_S_LD_B_IND:
+				func = sk_load_byte;
+				goto common_load_ind;
+			case BPF_S_JMP_JA:
+				t_offset = addrs[i + K] - addrs[i];
+				EMIT_JMP(t_offset);
+				break;
+			COND_SEL(BPF_S_JMP_JGT_K, X86_JA, X86_JBE);
+			COND_SEL(BPF_S_JMP_JGE_K, X86_JAE, X86_JB);
+			COND_SEL(BPF_S_JMP_JEQ_K, X86_JE, X86_JNE);
+			COND_SEL(BPF_S_JMP_JSET_K,X86_JNE, X86_JE);
+			COND_SEL(BPF_S_JMP_JGT_X, X86_JA, X86_JBE);
+			COND_SEL(BPF_S_JMP_JGE_X, X86_JAE, X86_JB);
+			COND_SEL(BPF_S_JMP_JEQ_X, X86_JE, X86_JNE);
+			COND_SEL(BPF_S_JMP_JSET_X,X86_JNE, X86_JE);
+
+cond_branch:			f_offset = addrs[i + filter[i].jf] - addrs[i];
+				t_offset = addrs[i + filter[i].jt] - addrs[i];
+
+				/* same targets, can avoid doing the test :) */
+				if (filter[i].jt == filter[i].jf) {
+					EMIT_JMP(t_offset);
+					break;
+				}
+
+				switch (filter[i].code) {
+				case BPF_S_JMP_JGT_X:
+				case BPF_S_JMP_JGE_X:
+				case BPF_S_JMP_JEQ_X:
+					seen |= SEEN_XREG;
+					EMIT2(0x39, 0xd8); /* cmp %ebx,%eax */
+					break;
+				case BPF_S_JMP_JSET_X:
+					seen |= SEEN_XREG;
+					EMIT2(0x85, 0xd8); /* test %ebx,%eax */
+					break;
+				case BPF_S_JMP_JEQ_K:
+					if (K == 0) {
+						EMIT2(0x85, 0xc0); /* test   %eax,%eax */
+						break;
+					}
+				case BPF_S_JMP_JGT_K:
+				case BPF_S_JMP_JGE_K:
+					if (K <= 127)
+						EMIT3(0x83, 0xf8, K); /* cmp imm8,%eax */
+					else
+						EMIT1_off32(0x3d, K); /* cmp imm32,%eax */
+					break;
+				case BPF_S_JMP_JSET_K:
+					if (K <= 0xFF)
+						EMIT2(0xa8, K); /* test imm8,%al */
+					else if (!(K & 0xFFFF00FF))
+						EMIT3(0xf6, 0xc4, K >> 8); /* test imm8,%ah */
+					else if (K <= 0xFFFF) {
+						EMIT2(0x66, 0xa9); /* test imm16,%ax */
+						EMIT(K, 2);
+					} else {
+						EMIT1_off32(0xa9, K); /* test imm32,%eax */
+					}
+					break;
+				}
+				if (filter[i].jt != 0) {
+					if (filter[i].jf && f_offset)
+						t_offset += is_near(f_offset) ? 2 : 5;
+					EMIT_COND_JMP(t_op, t_offset);
+					if (filter[i].jf)
+						EMIT_JMP(f_offset);
+					break;
+				}
+				EMIT_COND_JMP(f_op, f_offset);
+				break;
+			default:
+				/* hmm, too complex filter, give up with jit compiler */
+				goto out;
+			}
+			ilen = prog - temp;
+			if (image) {
+				if (unlikely(proglen + ilen > oldproglen)) {
+					pr_err("bpb_jit_compile fatal error\n");
+					kfree(addrs);
+					module_free_exec(NULL, image);
+					return;
+				}
+				pax_open_kernel();
+				memcpy(image + proglen, temp, ilen);
+				pax_close_kernel();
+			}
+			proglen += ilen;
+			addrs[i] = proglen;
+			prog = temp;
+		}
+		/* last bpf instruction is always a RET :
+		 * use it to give the cleanup instruction(s) addr
+		 */
+		cleanup_addr = proglen - 1; /* ret */
+		if (seen_or_pass0)
+			cleanup_addr -= 1; /* leaveq */
+		if (seen_or_pass0 & SEEN_XREG)
+			cleanup_addr -= 4; /* mov  -8(%rbp),%rbx */
+
 		if (image) {
 			if (proglen != oldproglen)
-				pr_err("bpf_jit: proglen=%d != oldproglen=%d\n",
-				       proglen, oldproglen);
+				pr_err("bpb_jit_compile proglen=%u != oldproglen=%u\n", proglen, oldproglen);
 			break;
 		}
 		if (proglen == oldproglen) {
@@ -918,32 +872,30 @@ void bpf_int_jit_compile(struct sk_filter *prog)
 	}
 
 	if (bpf_jit_enable > 1)
-		bpf_jit_dump(prog->len, proglen, 0, image);
+		bpf_jit_dump(flen, proglen, pass, image);
 
 	if (image) {
 		bpf_flush_icache(header, image + proglen);
-		set_memory_ro((unsigned long)header, header->pages);
-		prog->bpf_func = (void *)image;
-		prog->jited = 1;
+		fp->bpf_func = (void *)image;
 	}
 out:
 	kfree(addrs);
+	return;
 }
 
 static void bpf_jit_free_deferred(struct work_struct *work)
 {
 	struct sk_filter *fp = container_of(work, struct sk_filter, work);
 	unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK;
-	struct bpf_binary_header *header = (void *)addr;
 
-	set_memory_rw(addr, header->pages);
-	module_free(NULL, header);
+	set_memory_rw(addr, 1);
+	module_free_exec(NULL, (void *)addr);
 	kfree(fp);
 }
 
 void bpf_jit_free(struct sk_filter *fp)
 {
-	if (fp->jited) {
+	if (fp->bpf_func != sk_run_filter) {
 		INIT_WORK(&fp->work, bpf_jit_free_deferred);
 		schedule_work(&fp->work);
 	} else {
diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c
index 5d04be5..2beeaa2 100644
--- a/arch/x86/oprofile/backtrace.c
+++ b/arch/x86/oprofile/backtrace.c
@@ -46,11 +46,11 @@ dump_user_backtrace_32(struct stack_frame_ia32 *head)
 	struct stack_frame_ia32 *fp;
 	unsigned long bytes;
 
-	bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead));
+	bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead));
 	if (bytes != 0)
 		return NULL;
 
-	fp = (struct stack_frame_ia32 *) compat_ptr(bufhead[0].next_frame);
+	fp = (struct stack_frame_ia32 __force_kernel *) compat_ptr(bufhead[0].next_frame);
 
 	oprofile_add_trace(bufhead[0].return_address);
 
@@ -92,7 +92,7 @@ static struct stack_frame *dump_user_backtrace(struct stack_frame *head)
 	struct stack_frame bufhead[2];
 	unsigned long bytes;
 
-	bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead));
+	bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead));
 	if (bytes != 0)
 		return NULL;
 
@@ -111,7 +111,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth)
 {
 	struct stack_frame *head = (struct stack_frame *)frame_pointer(regs);
 
-	if (!user_mode_vm(regs)) {
+	if (!user_mode(regs)) {
 		unsigned long stack = kernel_stack_pointer(regs);
 		if (depth)
 			dump_trace(NULL, regs, (unsigned long *)stack, 0,
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 379e8bd..6386e09 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -23,6 +23,7 @@
 #include <asm/nmi.h>
 #include <asm/msr.h>
 #include <asm/apic.h>
+#include <asm/pgtable.h>
 
 #include "op_counter.h"
 #include "op_x86_model.h"
@@ -785,8 +786,11 @@ int __init op_nmi_init(struct oprofile_operations *ops)
 	if (ret)
 		return ret;
 
-	if (!model->num_virt_counters)
-		model->num_virt_counters = model->num_counters;
+	if (!model->num_virt_counters) {
+		pax_open_kernel();
+		*(unsigned int *)&model->num_virt_counters = model->num_counters;
+		pax_close_kernel();
+	}
 
 	mux_init(ops);
 
diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 50d86c0..7985318 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -519,9 +519,11 @@ static int op_amd_init(struct oprofile_operations *ops)
 		num_counters = AMD64_NUM_COUNTERS;
 	}
 
-	op_amd_spec.num_counters = num_counters;
-	op_amd_spec.num_controls = num_counters;
-	op_amd_spec.num_virt_counters = max(num_counters, NUM_VIRT_COUNTERS);
+	pax_open_kernel();
+	*(unsigned int *)&op_amd_spec.num_counters = num_counters;
+	*(unsigned int *)&op_amd_spec.num_controls = num_counters;
+	*(unsigned int *)&op_amd_spec.num_virt_counters = max(num_counters, NUM_VIRT_COUNTERS);
+	pax_close_kernel();
 
 	return 0;
 }
diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
index d90528e..0127e2b 100644
--- a/arch/x86/oprofile/op_model_ppro.c
+++ b/arch/x86/oprofile/op_model_ppro.c
@@ -19,6 +19,7 @@
 #include <asm/msr.h>
 #include <asm/apic.h>
 #include <asm/nmi.h>
+#include <asm/pgtable.h>
 
 #include "op_x86_model.h"
 #include "op_counter.h"
@@ -221,8 +222,10 @@ static void arch_perfmon_setup_counters(void)
 
 	num_counters = min((int)eax.split.num_counters, OP_MAX_COUNTER);
 
-	op_arch_perfmon_spec.num_counters = num_counters;
-	op_arch_perfmon_spec.num_controls = num_counters;
+	pax_open_kernel();
+	*(unsigned int *)&op_arch_perfmon_spec.num_counters = num_counters;
+	*(unsigned int *)&op_arch_perfmon_spec.num_controls = num_counters;
+	pax_close_kernel();
 }
 
 static int arch_perfmon_init(struct oprofile_operations *ignore)
diff --git a/arch/x86/oprofile/op_x86_model.h b/arch/x86/oprofile/op_x86_model.h
index 71e8a67..6a313bb 100644
--- a/arch/x86/oprofile/op_x86_model.h
+++ b/arch/x86/oprofile/op_x86_model.h
@@ -52,7 +52,7 @@ struct op_x86_model_spec {
 	void		(*switch_ctrl)(struct op_x86_model_spec const *model,
 				       struct op_msrs const * const msrs);
 #endif
-};
+} __do_const;
 
 struct op_counter_config;
 
diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c
index 84b9d67..260e5ff 100644
--- a/arch/x86/pci/intel_mid_pci.c
+++ b/arch/x86/pci/intel_mid_pci.c
@@ -245,7 +245,7 @@ int __init intel_mid_pci_init(void)
 	pr_info("Intel MID platform detected, using MID PCI ops\n");
 	pci_mmcfg_late_init();
 	pcibios_enable_irq = intel_mid_pci_irq_enable;
-	pci_root_ops = intel_mid_pci_ops;
+	memcpy((void *)&pci_root_ops, &intel_mid_pci_ops, sizeof pci_root_ops);
 	pci_soc_mode = 1;
 	/* Continue with standard init */
 	return 1;
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
index 84112f5..6334d60 100644
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -50,7 +50,7 @@ struct irq_router {
 struct irq_router_handler {
 	u16 vendor;
 	int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device);
-};
+} __do_const;
 
 int (*pcibios_enable_irq)(struct pci_dev *dev) = pirq_enable_irq;
 void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL;
@@ -790,7 +790,7 @@ static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router
 	return 0;
 }
 
-static __initdata struct irq_router_handler pirq_routers[] = {
+static __initconst const struct irq_router_handler pirq_routers[] = {
 	{ PCI_VENDOR_ID_INTEL, intel_router_probe },
 	{ PCI_VENDOR_ID_AL, ali_router_probe },
 	{ PCI_VENDOR_ID_ITE, ite_router_probe },
@@ -817,7 +817,7 @@ static struct pci_dev *pirq_router_dev;
 static void __init pirq_find_router(struct irq_router *r)
 {
 	struct irq_routing_table *rt = pirq_table;
-	struct irq_router_handler *h;
+	const struct irq_router_handler *h;
 
 #ifdef CONFIG_PCI_BIOS
 	if (!rt->signature) {
@@ -1090,7 +1090,7 @@ static int __init fix_acer_tm360_irqrouting(const struct dmi_system_id *d)
 	return 0;
 }
 
-static struct dmi_system_id __initdata pciirq_dmi_table[] = {
+static const struct dmi_system_id __initconst pciirq_dmi_table[] = {
 	{
 		.callback = fix_broken_hp_bios_irq9,
 		.ident = "HP Pavilion N5400 Series Laptop",
diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c
index c77b24a..c979855 100644
--- a/arch/x86/pci/pcbios.c
+++ b/arch/x86/pci/pcbios.c
@@ -79,7 +79,7 @@ union bios32 {
 static struct {
 	unsigned long address;
 	unsigned short segment;
-} bios32_indirect = { 0, __KERNEL_CS };
+} bios32_indirect __read_only = { 0, __PCIBIOS_CS };
 
 /*
  * Returns the entry point for the given service, NULL on error
@@ -92,37 +92,80 @@ static unsigned long bios32_service(unsigned long service)
 	unsigned long length;		/* %ecx */
 	unsigned long entry;		/* %edx */
 	unsigned long flags;
+	struct desc_struct d, *gdt;
 
 	local_irq_save(flags);
-	__asm__("lcall *(%%edi); cld"
+
+	gdt = get_cpu_gdt_table(smp_processor_id());
+
+	pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC);
+	write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S);
+	pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC);
+	write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S);
+
+	__asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld"
 		: "=a" (return_code),
 		  "=b" (address),
 		  "=c" (length),
 		  "=d" (entry)
 		: "0" (service),
 		  "1" (0),
-		  "D" (&bios32_indirect));
+		  "D" (&bios32_indirect),
+		  "r"(__PCIBIOS_DS)
+		: "memory");
+
+	pax_open_kernel();
+	gdt[GDT_ENTRY_PCIBIOS_CS].a = 0;
+	gdt[GDT_ENTRY_PCIBIOS_CS].b = 0;
+	gdt[GDT_ENTRY_PCIBIOS_DS].a = 0;
+	gdt[GDT_ENTRY_PCIBIOS_DS].b = 0;
+	pax_close_kernel();
+
 	local_irq_restore(flags);
 
 	switch (return_code) {
-		case 0:
-			return address + entry;
-		case 0x80:	/* Not present */
-			printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
-			return 0;
-		default: /* Shouldn't happen */
-			printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
-				service, return_code);
+	case 0: {
+		int cpu;
+		unsigned char flags;
+
+		printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry);
+		if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) {
+			printk(KERN_WARNING "bios32_service: not valid\n");
 			return 0;
+		}
+		address = address + PAGE_OFFSET;
+		length += 16UL; /* some BIOSs underreport this... */
+		flags = 4;
+		if (length >= 64*1024*1024) {
+			length >>= PAGE_SHIFT;
+			flags |= 8;
+		}
+
+		for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
+			gdt = get_cpu_gdt_table(cpu);
+			pack_descriptor(&d, address, length, 0x9b, flags);
+			write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S);
+			pack_descriptor(&d, address, length, 0x93, flags);
+			write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S);
+		}
+		return entry;
+	}
+	case 0x80:	/* Not present */
+		printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
+		return 0;
+	default: /* Shouldn't happen */
+		printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
+			service, return_code);
+		return 0;
 	}
 }
 
 static struct {
 	unsigned long address;
 	unsigned short segment;
-} pci_indirect = { 0, __KERNEL_CS };
+} pci_indirect __read_only = { 0, __PCIBIOS_CS };
 
-static int pci_bios_present;
+static int pci_bios_present __read_only;
 
 static int check_pcibios(void)
 {
@@ -131,11 +174,13 @@ static int check_pcibios(void)
 	unsigned long flags, pcibios_entry;
 
 	if ((pcibios_entry = bios32_service(PCI_SERVICE))) {
-		pci_indirect.address = pcibios_entry + PAGE_OFFSET;
+		pci_indirect.address = pcibios_entry;
 
 		local_irq_save(flags);
-		__asm__(
-			"lcall *(%%edi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%edi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -144,7 +189,8 @@ static int check_pcibios(void)
 			  "=b" (ebx),
 			  "=c" (ecx)
 			: "1" (PCIBIOS_PCI_BIOS_PRESENT),
-			  "D" (&pci_indirect)
+			  "D" (&pci_indirect),
+			  "r" (__PCIBIOS_DS)
 			: "memory");
 		local_irq_restore(flags);
 
@@ -189,7 +235,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 
 	switch (len) {
 	case 1:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -198,7 +247,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 			: "1" (PCIBIOS_READ_CONFIG_BYTE),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		/*
 		 * Zero-extend the result beyond 8 bits, do not trust the
 		 * BIOS having done it:
@@ -206,7 +256,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 		*value &= 0xff;
 		break;
 	case 2:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -215,7 +268,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 			: "1" (PCIBIOS_READ_CONFIG_WORD),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		/*
 		 * Zero-extend the result beyond 16 bits, do not trust the
 		 * BIOS having done it:
@@ -223,7 +277,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 		*value &= 0xffff;
 		break;
 	case 4:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -232,7 +289,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
 			: "1" (PCIBIOS_READ_CONFIG_DWORD),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	}
 
@@ -256,7 +314,10 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
 
 	switch (len) {
 	case 1:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -265,10 +326,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
 			  "c" (value),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	case 2:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -277,10 +342,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
 			  "c" (value),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	case 4:
-		__asm__("lcall *(%%esi); cld\n\t"
+		__asm__("movw %w6, %%ds\n\t"
+			"lcall *%%ss:(%%esi); cld\n\t"
+			"push %%ss\n\t"
+			"pop %%ds\n\t"
 			"jc 1f\n\t"
 			"xor %%ah, %%ah\n"
 			"1:"
@@ -289,7 +358,8 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
 			  "c" (value),
 			  "b" (bx),
 			  "D" ((long)reg),
-			  "S" (&pci_indirect));
+			  "S" (&pci_indirect),
+			  "r" (__PCIBIOS_DS));
 		break;
 	}
 
@@ -394,10 +464,13 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void)
 
 	DBG("PCI: Fetching IRQ routing table... ");
 	__asm__("push %%es\n\t"
+		"movw %w8, %%ds\n\t"
 		"push %%ds\n\t"
 		"pop  %%es\n\t"
-		"lcall *(%%esi); cld\n\t"
+		"lcall *%%ss:(%%esi); cld\n\t"
 		"pop %%es\n\t"
+		"push %%ss\n\t"
+		"pop %%ds\n"
 		"jc 1f\n\t"
 		"xor %%ah, %%ah\n"
 		"1:"
@@ -408,7 +481,8 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void)
 		  "1" (0),
 		  "D" ((long) &opt),
 		  "S" (&pci_indirect),
-		  "m" (opt)
+		  "m" (opt),
+		  "r" (__PCIBIOS_DS)
 		: "memory");
 	DBG("OK  ret=%d, size=%d, map=%x\n", ret, opt.size, map);
 	if (ret & 0xff00)
@@ -432,7 +506,10 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
 {
 	int ret;
 
-	__asm__("lcall *(%%esi); cld\n\t"
+	__asm__("movw %w5, %%ds\n\t"
+		"lcall *%%ss:(%%esi); cld\n\t"
+		"push %%ss\n\t"
+		"pop %%ds\n"
 		"jc 1f\n\t"
 		"xor %%ah, %%ah\n"
 		"1:"
@@ -440,7 +517,8 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
 		: "0" (PCIBIOS_SET_PCI_HW_INT),
 		  "b" ((dev->bus->number << 8) | dev->devfn),
 		  "c" ((irq << 8) | (pin + 10)),
-		  "S" (&pci_indirect));
+		  "S" (&pci_indirect),
+		  "r" (__PCIBIOS_DS));
 	return !(ret & 0xff00);
 }
 EXPORT_SYMBOL(pcibios_set_irq_routing);
diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c
index 9ee3491..872192f 100644
--- a/arch/x86/platform/efi/efi_32.c
+++ b/arch/x86/platform/efi/efi_32.c
@@ -59,11 +59,22 @@ void efi_call_phys_prelog(void)
 {
 	struct desc_ptr gdt_descr;
 
+#ifdef CONFIG_PAX_KERNEXEC
+	struct desc_struct d;
+#endif
+
 	local_irq_save(efi_rt_eflags);
 
 	load_cr3(initial_page_table);
 	__flush_tlb_all();
 
+#ifdef CONFIG_PAX_KERNEXEC
+	pack_descriptor(&d, 0, 0xFFFFF, 0x9B, 0xC);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S);
+	pack_descriptor(&d, 0, 0xFFFFF, 0x93, 0xC);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S);
+#endif
+
 	gdt_descr.address = __pa(get_cpu_gdt_table(0));
 	gdt_descr.size = GDT_SIZE - 1;
 	load_gdt(&gdt_descr);
@@ -73,11 +84,24 @@ void efi_call_phys_epilog(void)
 {
 	struct desc_ptr gdt_descr;
 
+#ifdef CONFIG_PAX_KERNEXEC
+	struct desc_struct d;
+
+	memset(&d, 0, sizeof d);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S);
+	write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S);
+#endif
+
 	gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
 	gdt_descr.size = GDT_SIZE - 1;
 	load_gdt(&gdt_descr);
 
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	load_cr3(get_cpu_pgd(smp_processor_id(), kernel));
+#else
 	load_cr3(swapper_pg_dir);
+#endif
+
 	__flush_tlb_all();
 
 	local_irq_restore(efi_rt_eflags);
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index 290d397..e09d270 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -99,6 +99,11 @@ void __init efi_call_phys_prelog(void)
 		vaddress = (unsigned long)__va(pgd * PGDIR_SIZE);
 		set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), *pgd_offset_k(vaddress));
 	}
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	load_cr3(swapper_pg_dir);
+#endif
+
 	__flush_tlb_all();
 }
 
@@ -116,6 +121,11 @@ void __init efi_call_phys_epilog(void)
 	for (pgd = 0; pgd < n_pgds; pgd++)
 		set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), save_pgd[pgd]);
 	kfree(save_pgd);
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	load_cr3(get_cpu_pgd(smp_processor_id(), kernel));
+#endif
+
 	__flush_tlb_all();
 	local_irq_restore(efi_flags);
 	early_code_mapping_set_exec(0);
@@ -146,8 +156,23 @@ int efi_setup_page_tables(unsigned long pa_memmap, unsigned num_pages)
 	unsigned npages;
 	pgd_t *pgd;
 
-	if (efi_enabled(EFI_OLD_MEMMAP))
+	if (efi_enabled(EFI_OLD_MEMMAP)) {
+		/* PaX: We need to disable the NX bit in the PGD, otherwise we won't be
+		 * able to execute the EFI services.
+		 */
+		if (__supported_pte_mask & _PAGE_NX) {
+			unsigned long addr = (unsigned long) __va(0);
+			pgd_t pe = __pgd(pgd_val(*pgd_offset_k(addr)) &  ~_PAGE_NX);
+
+			pr_alert("PAX: Disabling NX protection for low memory map. Try booting without \"efi=old_map\"\n");
+#ifdef CONFIG_PAX_PER_CPU_PGD
+			set_pgd(pgd_offset_cpu(0, kernel, addr), pe);
+#endif
+			set_pgd(pgd_offset_k(addr), pe);
+		}
+
 		return 0;
+	}
 
 	efi_scratch.efi_pgt = (pgd_t *)(unsigned long)real_mode_header->trampoline_pgd;
 	pgd = __va(efi_scratch.efi_pgt);
diff --git a/arch/x86/platform/efi/efi_stub_32.S b/arch/x86/platform/efi/efi_stub_32.S
index fbe66e6..eae5e38 100644
--- a/arch/x86/platform/efi/efi_stub_32.S
+++ b/arch/x86/platform/efi/efi_stub_32.S
@@ -6,7 +6,9 @@
  */
 
 #include <linux/linkage.h>
+#include <linux/init.h>
 #include <asm/page_types.h>
+#include <asm/segment.h>
 
 /*
  * efi_call_phys(void *, ...) is a function with variable parameters.
@@ -20,7 +22,7 @@
  * service functions will comply with gcc calling convention, too.
  */
 
-.text
+__INIT
 ENTRY(efi_call_phys)
 	/*
 	 * 0. The function can only be called in Linux kernel. So CS has been
@@ -36,10 +38,24 @@ ENTRY(efi_call_phys)
 	 * The mapping of lower virtual memory has been created in prelog and
 	 * epilog.
 	 */
-	movl	$1f, %edx
-	subl	$__PAGE_OFFSET, %edx
-	jmp	*%edx
+#ifdef CONFIG_PAX_KERNEXEC
+	movl	$(__KERNEXEC_EFI_DS), %edx
+	mov	%edx, %ds
+	mov	%edx, %es
+	mov	%edx, %ss
+	addl	$2f,(1f)
+	ljmp	*(1f)
+
+__INITDATA
+1:	.long __LOAD_PHYSICAL_ADDR, __KERNEXEC_EFI_CS
+.previous
+
+2:
+	subl	$2b,(1b)
+#else
+	jmp	1f-__PAGE_OFFSET
 1:
+#endif
 
 	/*
 	 * 2. Now on the top of stack is the return
@@ -47,14 +63,8 @@ ENTRY(efi_call_phys)
 	 * parameter 2, ..., param n. To make things easy, we save the return
 	 * address of efi_call_phys in a global variable.
 	 */
-	popl	%edx
-	movl	%edx, saved_return_addr
-	/* get the function pointer into ECX*/
-	popl	%ecx
-	movl	%ecx, efi_rt_function_ptr
-	movl	$2f, %edx
-	subl	$__PAGE_OFFSET, %edx
-	pushl	%edx
+	popl	(saved_return_addr)
+	popl	(efi_rt_function_ptr)
 
 	/*
 	 * 3. Clear PG bit in %CR0.
@@ -73,9 +83,8 @@ ENTRY(efi_call_phys)
 	/*
 	 * 5. Call the physical function.
 	 */
-	jmp	*%ecx
+	call	*(efi_rt_function_ptr-__PAGE_OFFSET)
 
-2:
 	/*
 	 * 6. After EFI runtime service returns, control will return to
 	 * following instruction. We'd better readjust stack pointer first.
@@ -88,35 +97,36 @@ ENTRY(efi_call_phys)
 	movl	%cr0, %edx
 	orl	$0x80000000, %edx
 	movl	%edx, %cr0
-	jmp	1f
-1:
+
 	/*
 	 * 8. Now restore the virtual mode from flat mode by
 	 * adding EIP with PAGE_OFFSET.
 	 */
-	movl	$1f, %edx
-	jmp	*%edx
+#ifdef CONFIG_PAX_KERNEXEC
+	movl	$(__KERNEL_DS), %edx
+	mov	%edx, %ds
+	mov	%edx, %es
+	mov	%edx, %ss
+	ljmp	$(__KERNEL_CS),$1f
+#else
+	jmp	1f+__PAGE_OFFSET
+#endif
 1:
 
 	/*
 	 * 9. Balance the stack. And because EAX contain the return value,
 	 * we'd better not clobber it.
 	 */
-	leal	efi_rt_function_ptr, %edx
-	movl	(%edx), %ecx
-	pushl	%ecx
+	pushl	(efi_rt_function_ptr)
 
 	/*
-	 * 10. Push the saved return address onto the stack and return.
+	 * 10. Return to the saved return address.
 	 */
-	leal	saved_return_addr, %edx
-	movl	(%edx), %ecx
-	pushl	%ecx
-	ret
+	jmpl	*(saved_return_addr)
 ENDPROC(efi_call_phys)
 .previous
 
-.data
+__INITDATA
 saved_return_addr:
 	.long 0
 efi_rt_function_ptr:
diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S
index 5fcda72..cd4dc41 100644
--- a/arch/x86/platform/efi/efi_stub_64.S
+++ b/arch/x86/platform/efi/efi_stub_64.S
@@ -11,6 +11,7 @@
 #include <asm/msr.h>
 #include <asm/processor-flags.h>
 #include <asm/page_types.h>
+#include <asm/alternative-asm.h>
 
 #define SAVE_XMM			\
 	mov %rsp, %rax;			\
@@ -88,6 +89,7 @@ ENTRY(efi_call)
 	RESTORE_PGT
 	addq $48, %rsp
 	RESTORE_XMM
+	pax_force_retaddr 0, 1
 	ret
 ENDPROC(efi_call)
 
@@ -245,8 +247,8 @@ efi_gdt64:
 	.long	0			/* Filled out by user */
 	.word	0
 	.quad	0x0000000000000000	/* NULL descriptor */
-	.quad	0x00af9a000000ffff	/* __KERNEL_CS */
-	.quad	0x00cf92000000ffff	/* __KERNEL_DS */
+	.quad	0x00af9b000000ffff	/* __KERNEL_CS */
+	.quad	0x00cf93000000ffff	/* __KERNEL_DS */
 	.quad	0x0080890000000000	/* TS descriptor */
 	.quad   0x0000000000000000	/* TS continued */
 efi_gdt64_end:
diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
index 1bbedc4..eb795b5 100644
--- a/arch/x86/platform/intel-mid/intel-mid.c
+++ b/arch/x86/platform/intel-mid/intel-mid.c
@@ -71,9 +71,10 @@ static void intel_mid_power_off(void)
 {
 };
 
-static void intel_mid_reboot(void)
+static void __noreturn intel_mid_reboot(void)
 {
 	intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0);
+	BUG();
 }
 
 static unsigned long __init intel_mid_calibrate_tsc(void)
diff --git a/arch/x86/platform/olpc/olpc_dt.c b/arch/x86/platform/olpc/olpc_dt.c
index d6ee929..3637cb5 100644
--- a/arch/x86/platform/olpc/olpc_dt.c
+++ b/arch/x86/platform/olpc/olpc_dt.c
@@ -156,7 +156,7 @@ void * __init prom_early_alloc(unsigned long size)
 	return res;
 }
 
-static struct of_pdt_ops prom_olpc_ops __initdata = {
+static struct of_pdt_ops prom_olpc_ops __initconst = {
 	.nextprop = olpc_dt_nextprop,
 	.getproplen = olpc_dt_getproplen,
 	.getproperty = olpc_dt_getproperty,
diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
index 424f4c9..f2a2988 100644
--- a/arch/x86/power/cpu.c
+++ b/arch/x86/power/cpu.c
@@ -137,11 +137,8 @@ static void do_fpu_end(void)
 static void fix_processor_context(void)
 {
 	int cpu = smp_processor_id();
-	struct tss_struct *t = &per_cpu(init_tss, cpu);
-#ifdef CONFIG_X86_64
-	struct desc_struct *desc = get_cpu_gdt_table(cpu);
-	tss_desc tss;
-#endif
+	struct tss_struct *t = init_tss + cpu;
+
 	set_tss_desc(cpu, t);	/*
 				 * This just modifies memory; should not be
 				 * necessary. But... This is necessary, because
@@ -150,10 +147,6 @@ static void fix_processor_context(void)
 				 */
 
 #ifdef CONFIG_X86_64
-	memcpy(&tss, &desc[GDT_ENTRY_TSS], sizeof(tss_desc));
-	tss.type = 0x9; /* The available 64-bit TSS (see AMD vol 2, pg 91 */
-	write_gdt_entry(desc, GDT_ENTRY_TSS, &tss, DESC_TSS);
-
 	syscall_init();				/* This sets MSR_*STAR and related */
 #endif
 	load_TR_desc();				/* This does ltr */
diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
index bad628a..a102610 100644
--- a/arch/x86/realmode/init.c
+++ b/arch/x86/realmode/init.c
@@ -68,7 +68,13 @@ void __init setup_real_mode(void)
 		__va(real_mode_header->trampoline_header);
 
 #ifdef CONFIG_X86_32
-	trampoline_header->start = __pa_symbol(startup_32_smp);
+	trampoline_header->start = __pa_symbol(ktla_ktva(startup_32_smp));
+
+#ifdef CONFIG_PAX_KERNEXEC
+	trampoline_header->start -= LOAD_PHYSICAL_ADDR;
+#endif
+
+	trampoline_header->boot_cs = __BOOT_CS;
 	trampoline_header->gdt_limit = __BOOT_DS + 7;
 	trampoline_header->gdt_base = __pa_symbol(boot_gdt);
 #else
@@ -84,7 +90,7 @@ void __init setup_real_mode(void)
 	*trampoline_cr4_features = read_cr4();
 
 	trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd);
-	trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd;
+	trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd & ~_PAGE_NX;
 	trampoline_pgd[511] = init_level4_pgt[511].pgd;
 #endif
 }
diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
index 7c0d7be..d24dc88 100644
--- a/arch/x86/realmode/rm/Makefile
+++ b/arch/x86/realmode/rm/Makefile
@@ -67,5 +67,8 @@ $(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
 
 KBUILD_CFLAGS	:= $(LINUXINCLUDE) $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \
 		   -I$(srctree)/arch/x86/boot
+ifdef CONSTIFY_PLUGIN
+KBUILD_CFLAGS	+= -fplugin-arg-constify_plugin-no-constify
+endif
 KBUILD_AFLAGS	:= $(KBUILD_CFLAGS) -D__ASSEMBLY__
 GCOV_PROFILE := n
diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S
index a28221d..93c40f1 100644
--- a/arch/x86/realmode/rm/header.S
+++ b/arch/x86/realmode/rm/header.S
@@ -30,7 +30,9 @@ GLOBAL(real_mode_header)
 #endif
 	/* APM/BIOS reboot */
 	.long	pa_machine_real_restart_asm
-#ifdef CONFIG_X86_64
+#ifdef CONFIG_X86_32
+	.long	__KERNEL_CS
+#else
 	.long	__KERNEL32_CS
 #endif
 END(real_mode_header)
diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S
index 48ddd76..c26749f 100644
--- a/arch/x86/realmode/rm/trampoline_32.S
+++ b/arch/x86/realmode/rm/trampoline_32.S
@@ -24,6 +24,12 @@
 #include <asm/page_types.h>
 #include "realmode.h"
 
+#ifdef CONFIG_PAX_KERNEXEC
+#define ta(X) (X)
+#else
+#define ta(X) (pa_ ## X)
+#endif
+
 	.text
 	.code16
 
@@ -38,8 +44,6 @@ ENTRY(trampoline_start)
 
 	cli			# We should be safe anyway
 
-	movl	tr_start, %eax	# where we need to go
-
 	movl	$0xA5A5A5A5, trampoline_status
 				# write marker for master knows we're running
 
@@ -55,7 +59,7 @@ ENTRY(trampoline_start)
 	movw	$1, %dx			# protected mode (PE) bit
 	lmsw	%dx			# into protected mode
 
-	ljmpl	$__BOOT_CS, $pa_startup_32
+	ljmpl *(trampoline_header)
 
 	.section ".text32","ax"
 	.code32
@@ -66,7 +70,7 @@ ENTRY(startup_32)			# note: also used from wakeup_asm.S
 	.balign 8
 GLOBAL(trampoline_header)
 	tr_start:		.space	4
-	tr_gdt_pad:		.space	2
+	tr_boot_cs:		.space	2
 	tr_gdt:			.space	6
 END(trampoline_header)
 	
diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
index dac7b20..72dbaca 100644
--- a/arch/x86/realmode/rm/trampoline_64.S
+++ b/arch/x86/realmode/rm/trampoline_64.S
@@ -93,6 +93,7 @@ ENTRY(startup_32)
 	movl	%edx, %gs
 
 	movl	pa_tr_cr4, %eax
+	andl	$~X86_CR4_PCIDE, %eax
 	movl	%eax, %cr4		# Enable PAE mode
 
 	# Setup trampoline 4 level pagetables
@@ -106,7 +107,7 @@ ENTRY(startup_32)
 	wrmsr
 
 	# Enable paging and in turn activate Long Mode
-	movl	$(X86_CR0_PG | X86_CR0_WP | X86_CR0_PE), %eax
+	movl	$(X86_CR0_PG | X86_CR0_PE), %eax
 	movl	%eax, %cr0
 
 	/*
diff --git a/arch/x86/realmode/rm/wakeup_asm.S b/arch/x86/realmode/rm/wakeup_asm.S
index 9e7e147..25a4158 100644
--- a/arch/x86/realmode/rm/wakeup_asm.S
+++ b/arch/x86/realmode/rm/wakeup_asm.S
@@ -126,11 +126,10 @@ ENTRY(wakeup_start)
 	lgdtl	pmode_gdt
 
 	/* This really couldn't... */
-	movl	pmode_entry, %eax
 	movl	pmode_cr0, %ecx
 	movl	%ecx, %cr0
-	ljmpl	$__KERNEL_CS, $pa_startup_32
-	/* -> jmp *%eax in trampoline_32.S */
+
+	ljmpl	*pmode_entry
 #else
 	jmp	trampoline_start
 #endif
diff --git a/arch/x86/tools/Makefile b/arch/x86/tools/Makefile
index 604a37e..e49702a 100644
--- a/arch/x86/tools/Makefile
+++ b/arch/x86/tools/Makefile
@@ -37,7 +37,7 @@ $(obj)/test_get_len.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/in
 
 $(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
 
-HOST_EXTRACFLAGS += -I$(srctree)/tools/include
+HOST_EXTRACFLAGS += -I$(srctree)/tools/include -ggdb
 hostprogs-y	+= relocs
 relocs-objs     := relocs_32.o relocs_64.o relocs_common.o
 PHONY += relocs
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index bbb1d22..e505211 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -1,5 +1,7 @@
 /* This is included from relocs_32/64.c */
 
+#include "../../../include/generated/autoconf.h"
+
 #define ElfW(type)		_ElfW(ELF_BITS, type)
 #define _ElfW(bits, type)	__ElfW(bits, type)
 #define __ElfW(bits, type)	Elf##bits##_##type
@@ -11,6 +13,7 @@
 #define Elf_Sym			ElfW(Sym)
 
 static Elf_Ehdr ehdr;
+static Elf_Phdr *phdr;
 
 struct relocs {
 	uint32_t	*offset;
@@ -383,9 +386,39 @@ static void read_ehdr(FILE *fp)
 	}
 }
 
+static void read_phdrs(FILE *fp)
+{
+	unsigned int i;
+
+	phdr = calloc(ehdr.e_phnum, sizeof(Elf_Phdr));
+	if (!phdr) {
+		die("Unable to allocate %d program headers\n",
+		    ehdr.e_phnum);
+	}
+	if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) {
+		die("Seek to %d failed: %s\n",
+			ehdr.e_phoff, strerror(errno));
+	}
+	if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) {
+		die("Cannot read ELF program headers: %s\n",
+			strerror(errno));
+	}
+	for(i = 0; i < ehdr.e_phnum; i++) {
+		phdr[i].p_type      = elf_word_to_cpu(phdr[i].p_type);
+		phdr[i].p_offset    = elf_off_to_cpu(phdr[i].p_offset);
+		phdr[i].p_vaddr     = elf_addr_to_cpu(phdr[i].p_vaddr);
+		phdr[i].p_paddr     = elf_addr_to_cpu(phdr[i].p_paddr);
+		phdr[i].p_filesz    = elf_word_to_cpu(phdr[i].p_filesz);
+		phdr[i].p_memsz     = elf_word_to_cpu(phdr[i].p_memsz);
+		phdr[i].p_flags     = elf_word_to_cpu(phdr[i].p_flags);
+		phdr[i].p_align     = elf_word_to_cpu(phdr[i].p_align);
+	}
+
+}
+
 static void read_shdrs(FILE *fp)
 {
-	int i;
+	unsigned int i;
 	Elf_Shdr shdr;
 
 	secs = calloc(ehdr.e_shnum, sizeof(struct section));
@@ -420,7 +453,7 @@ static void read_shdrs(FILE *fp)
 
 static void read_strtabs(FILE *fp)
 {
-	int i;
+	unsigned int i;
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		if (sec->shdr.sh_type != SHT_STRTAB) {
@@ -445,7 +478,7 @@ static void read_strtabs(FILE *fp)
 
 static void read_symtabs(FILE *fp)
 {
-	int i,j;
+	unsigned int i,j;
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		if (sec->shdr.sh_type != SHT_SYMTAB) {
@@ -476,9 +509,11 @@ static void read_symtabs(FILE *fp)
 }
 
 
-static void read_relocs(FILE *fp)
+static void read_relocs(FILE *fp, int use_real_mode)
 {
-	int i,j;
+	unsigned int i,j;
+	uint32_t base;
+
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		if (sec->shdr.sh_type != SHT_REL_TYPE) {
@@ -498,9 +533,22 @@ static void read_relocs(FILE *fp)
 			die("Cannot read symbol table: %s\n",
 				strerror(errno));
 		}
+		base = 0;
+
+#ifdef CONFIG_X86_32
+		for (j = 0; !use_real_mode && j < ehdr.e_phnum; j++) {
+			if (phdr[j].p_type != PT_LOAD )
+				continue;
+			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)
+				continue;
+			base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr;
+			break;
+		}
+#endif
+
 		for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {
 			Elf_Rel *rel = &sec->reltab[j];
-			rel->r_offset = elf_addr_to_cpu(rel->r_offset);
+			rel->r_offset = elf_addr_to_cpu(rel->r_offset) + base;
 			rel->r_info   = elf_xword_to_cpu(rel->r_info);
 #if (SHT_REL_TYPE == SHT_RELA)
 			rel->r_addend = elf_xword_to_cpu(rel->r_addend);
@@ -512,7 +560,7 @@ static void read_relocs(FILE *fp)
 
 static void print_absolute_symbols(void)
 {
-	int i;
+	unsigned int i;
 	const char *format;
 
 	if (ELF_BITS == 64)
@@ -525,7 +573,7 @@ static void print_absolute_symbols(void)
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		struct section *sec = &secs[i];
 		char *sym_strtab;
-		int j;
+		unsigned int j;
 
 		if (sec->shdr.sh_type != SHT_SYMTAB) {
 			continue;
@@ -552,7 +600,7 @@ static void print_absolute_symbols(void)
 
 static void print_absolute_relocs(void)
 {
-	int i, printed = 0;
+	unsigned int i, printed = 0;
 	const char *format;
 
 	if (ELF_BITS == 64)
@@ -565,7 +613,7 @@ static void print_absolute_relocs(void)
 		struct section *sec_applies, *sec_symtab;
 		char *sym_strtab;
 		Elf_Sym *sh_symtab;
-		int j;
+		unsigned int j;
 		if (sec->shdr.sh_type != SHT_REL_TYPE) {
 			continue;
 		}
@@ -642,13 +690,13 @@ static void add_reloc(struct relocs *r, uint32_t offset)
 static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel,
 			Elf_Sym *sym, const char *symname))
 {
-	int i;
+	unsigned int i;
 	/* Walk through the relocations */
 	for (i = 0; i < ehdr.e_shnum; i++) {
 		char *sym_strtab;
 		Elf_Sym *sh_symtab;
 		struct section *sec_applies, *sec_symtab;
-		int j;
+		unsigned int j;
 		struct section *sec = &secs[i];
 
 		if (sec->shdr.sh_type != SHT_REL_TYPE) {
@@ -822,6 +870,23 @@ static int do_reloc32(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
 {
 	unsigned r_type = ELF32_R_TYPE(rel->r_info);
 	int shn_abs = (sym->st_shndx == SHN_ABS) && !is_reloc(S_REL, symname);
+	char *sym_strtab = sec->link->link->strtab;
+
+	/* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */
+	if (!strcmp(sec_name(sym->st_shndx), ".data..percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load"))
+		return 0;
+
+#ifdef CONFIG_PAX_KERNEXEC
+	/* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */
+	if (!strcmp(sec_name(sym->st_shndx), ".text.end") && !strcmp(sym_name(sym_strtab, sym), "_etext"))
+		return 0;
+	if (!strcmp(sec_name(sym->st_shndx), ".init.text"))
+		return 0;
+	if (!strcmp(sec_name(sym->st_shndx), ".exit.text"))
+		return 0;
+	if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR"))
+		return 0;
+#endif
 
 	switch (r_type) {
 	case R_386_NONE:
@@ -960,7 +1025,7 @@ static int write32_as_text(uint32_t v, FILE *f)
 
 static void emit_relocs(int as_text, int use_real_mode)
 {
-	int i;
+	unsigned int i;
 	int (*write_reloc)(uint32_t, FILE *) = write32;
 	int (*do_reloc)(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
 			const char *symname);
@@ -1060,10 +1125,11 @@ void process(FILE *fp, int use_real_mode, int as_text,
 {
 	regex_init(use_real_mode);
 	read_ehdr(fp);
+	read_phdrs(fp);
 	read_shdrs(fp);
 	read_strtabs(fp);
 	read_symtabs(fp);
-	read_relocs(fp);
+	read_relocs(fp, use_real_mode);
 	if (ELF_BITS == 64)
 		percpu_init();
 	if (show_absolute_syms) {
diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
index f40281e..92728c9 100644
--- a/arch/x86/um/mem_32.c
+++ b/arch/x86/um/mem_32.c
@@ -21,7 +21,7 @@ static int __init gate_vma_init(void)
 	gate_vma.vm_start = FIXADDR_USER_START;
 	gate_vma.vm_end = FIXADDR_USER_END;
 	gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
-	gate_vma.vm_page_prot = __P101;
+	gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
 
 	return 0;
 }
diff --git a/arch/x86/um/tls_32.c b/arch/x86/um/tls_32.c
index 80ffa5b..a33bd15 100644
--- a/arch/x86/um/tls_32.c
+++ b/arch/x86/um/tls_32.c
@@ -260,7 +260,7 @@ out:
 	if (unlikely(task == current &&
 		     !t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].flushed)) {
 		printk(KERN_ERR "get_tls_entry: task with pid %d got here "
-				"without flushed TLS.", current->pid);
+				"without flushed TLS.", task_pid_nr(current));
 	}
 
 	return 0;
diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
index 61b04fe..3134230 100644
--- a/arch/x86/vdso/Makefile
+++ b/arch/x86/vdso/Makefile
@@ -170,7 +170,7 @@ quiet_cmd_vdso = VDSO    $@
 		       -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
 		 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
 
-VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \
+VDSO_LDFLAGS = -fPIC -shared -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \
 	$(call cc-ldoption, -Wl$(comma)--build-id) -Wl,-Bsymbolic $(LTO_CFLAGS)
 GCOV_PROFILE := n
 
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
index e4f7781..ab5ab26 100644
--- a/arch/x86/vdso/vdso32-setup.c
+++ b/arch/x86/vdso/vdso32-setup.c
@@ -14,6 +14,7 @@
 #include <asm/cpufeature.h>
 #include <asm/processor.h>
 #include <asm/vdso.h>
+#include <asm/mman.h>
 
 #ifdef CONFIG_COMPAT_VDSO
 #define VDSO_DEFAULT	0
diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
index 5a5176d..e570acd 100644
--- a/arch/x86/vdso/vma.c
+++ b/arch/x86/vdso/vma.c
@@ -16,10 +16,9 @@
 #include <asm/vdso.h>
 #include <asm/page.h>
 #include <asm/hpet.h>
+#include <asm/mman.h>
 
 #if defined(CONFIG_X86_64)
-unsigned int __read_mostly vdso64_enabled = 1;
-
 extern unsigned short vdso_sync_cpuid;
 #endif
 
@@ -101,6 +100,11 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr)
 		.pages = no_pages,
 	};
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		calculate_addr = false;
+#endif
+
 	if (calculate_addr) {
 		addr = vdso_addr(current->mm->start_stack,
 				 image->sym_end_mapping);
@@ -110,13 +114,13 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr)
 
 	down_write(&mm->mmap_sem);
 
-	addr = get_unmapped_area(NULL, addr, image->sym_end_mapping, 0, 0);
+	addr = get_unmapped_area(NULL, addr, image->sym_end_mapping, 0, MAP_EXECUTABLE);
 	if (IS_ERR_VALUE(addr)) {
 		ret = addr;
 		goto up_fail;
 	}
 
-	current->mm->context.vdso = (void __user *)addr;
+	mm->context.vdso = addr;
 
 	/*
 	 * MAYWRITE to allow gdb to COW and set breakpoints
@@ -161,15 +165,12 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr)
 			hpet_address >> PAGE_SHIFT,
 			PAGE_SIZE,
 			pgprot_noncached(PAGE_READONLY));
-
-		if (ret)
-			goto up_fail;
 	}
 #endif
 
 up_fail:
 	if (ret)
-		current->mm->context.vdso = NULL;
+		current->mm->context.vdso = 0;
 
 	up_write(&mm->mmap_sem);
 	return ret;
@@ -189,8 +190,8 @@ static int load_vdso32(void)
 
 	if (selected_vdso32->sym_VDSO32_SYSENTER_RETURN)
 		current_thread_info()->sysenter_return =
-			current->mm->context.vdso +
-			selected_vdso32->sym_VDSO32_SYSENTER_RETURN;
+			(void __force_user *)(current->mm->context.vdso +
+			selected_vdso32->sym_VDSO32_SYSENTER_RETURN);
 
 	return 0;
 }
@@ -199,9 +200,6 @@ static int load_vdso32(void)
 #ifdef CONFIG_X86_64
 int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 {
-	if (!vdso64_enabled)
-		return 0;
-
 	return map_vdso(&vdso_image_64, true);
 }
 
@@ -210,12 +208,8 @@ int compat_arch_setup_additional_pages(struct linux_binprm *bprm,
 				       int uses_interp)
 {
 #ifdef CONFIG_X86_X32_ABI
-	if (test_thread_flag(TIF_X32)) {
-		if (!vdso64_enabled)
-			return 0;
-
+	if (test_thread_flag(TIF_X32))
 		return map_vdso(&vdso_image_x32, true);
-	}
 #endif
 
 	return load_vdso32();
@@ -227,12 +221,3 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
 	return load_vdso32();
 }
 #endif
-
-#ifdef CONFIG_X86_64
-static __init int vdso_setup(char *s)
-{
-	vdso64_enabled = simple_strtoul(s, NULL, 0);
-	return 0;
-}
-__setup("vdso=", vdso_setup);
-#endif
diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
index e88fda8..76ce7ce 100644
--- a/arch/x86/xen/Kconfig
+++ b/arch/x86/xen/Kconfig
@@ -9,6 +9,7 @@ config XEN
 	select XEN_HAVE_PVMMU
 	depends on X86_64 || (X86_32 && X86_PAE)
 	depends on X86_TSC
+	depends on !GRKERNSEC_CONFIG_AUTO || GRKERNSEC_CONFIG_VIRT_XEN
 	help
 	  This is the Linux Xen port.  Enabling this will allow the
 	  kernel to boot in a paravirtualized environment under the
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index ffb101e..98c0ecf 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -123,8 +123,6 @@ EXPORT_SYMBOL_GPL(xen_start_info);
 
 struct shared_info xen_dummy_shared_info;
 
-void *xen_initial_gdt;
-
 RESERVE_BRK(shared_info_page_brk, PAGE_SIZE);
 __read_mostly int xen_have_vector_callback;
 EXPORT_SYMBOL_GPL(xen_have_vector_callback);
@@ -542,8 +540,7 @@ static void xen_load_gdt(const struct desc_ptr *dtr)
 {
 	unsigned long va = dtr->address;
 	unsigned int size = dtr->size + 1;
-	unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
-	unsigned long frames[pages];
+	unsigned long frames[65536 / PAGE_SIZE];
 	int f;
 
 	/*
@@ -591,8 +588,7 @@ static void __init xen_load_gdt_boot(const struct desc_ptr *dtr)
 {
 	unsigned long va = dtr->address;
 	unsigned int size = dtr->size + 1;
-	unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
-	unsigned long frames[pages];
+	unsigned long frames[(GDT_SIZE + PAGE_SIZE - 1) / PAGE_SIZE];
 	int f;
 
 	/*
@@ -600,7 +596,7 @@ static void __init xen_load_gdt_boot(const struct desc_ptr *dtr)
 	 * 8-byte entries, or 16 4k pages..
 	 */
 
-	BUG_ON(size > 65536);
+	BUG_ON(size > GDT_SIZE);
 	BUG_ON(va & ~PAGE_MASK);
 
 	for (f = 0; va < dtr->address + size; va += PAGE_SIZE, f++) {
@@ -989,7 +985,7 @@ static u32 xen_safe_apic_wait_icr_idle(void)
         return 0;
 }
 
-static void set_xen_basic_apic_ops(void)
+static void __init set_xen_basic_apic_ops(void)
 {
 	apic->read = xen_apic_read;
 	apic->write = xen_apic_write;
@@ -1295,30 +1291,30 @@ static const struct pv_apic_ops xen_apic_ops __initconst = {
 #endif
 };
 
-static void xen_reboot(int reason)
+static __noreturn void xen_reboot(int reason)
 {
 	struct sched_shutdown r = { .reason = reason };
 
-	if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r))
-		BUG();
+	HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
+	BUG();
 }
 
-static void xen_restart(char *msg)
+static __noreturn void xen_restart(char *msg)
 {
 	xen_reboot(SHUTDOWN_reboot);
 }
 
-static void xen_emergency_restart(void)
+static __noreturn void xen_emergency_restart(void)
 {
 	xen_reboot(SHUTDOWN_reboot);
 }
 
-static void xen_machine_halt(void)
+static __noreturn void xen_machine_halt(void)
 {
 	xen_reboot(SHUTDOWN_poweroff);
 }
 
-static void xen_machine_power_off(void)
+static __noreturn void xen_machine_power_off(void)
 {
 	if (pm_power_off)
 		pm_power_off();
@@ -1568,7 +1564,17 @@ asmlinkage __visible void __init xen_start_kernel(void)
 	__userpte_alloc_gfp &= ~__GFP_HIGHMEM;
 
 	/* Work out if we support NX */
-	x86_configure_nx();
+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
+	if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 &&
+	    (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) {
+		unsigned l, h;
+
+		__supported_pte_mask |= _PAGE_NX;
+		rdmsr(MSR_EFER, l, h);
+		l |= EFER_NX;
+		wrmsr(MSR_EFER, l, h);
+	}
+#endif
 
 	/* Get mfn list */
 	xen_build_dynamic_phys_to_machine();
@@ -1596,13 +1602,6 @@ asmlinkage __visible void __init xen_start_kernel(void)
 
 	machine_ops = xen_machine_ops;
 
-	/*
-	 * The only reliable way to retain the initial address of the
-	 * percpu gdt_page is to remember it here, so we can go and
-	 * mark it RW later, when the initial percpu area is freed.
-	 */
-	xen_initial_gdt = &per_cpu(gdt_page, 0);
-
 	xen_smp_init();
 
 #ifdef CONFIG_ACPI_NUMA
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index e8a1201..046c66c 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -379,7 +379,7 @@ static pteval_t pte_mfn_to_pfn(pteval_t val)
 	return val;
 }
 
-static pteval_t pte_pfn_to_mfn(pteval_t val)
+static pteval_t __intentional_overflow(-1) pte_pfn_to_mfn(pteval_t val)
 {
 	if (val & _PAGE_PRESENT) {
 		unsigned long pfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
@@ -1904,6 +1904,9 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
 		/* L3_k[510] -> level2_kernel_pgt
 		 * L3_i[511] -> level2_fixmap_pgt */
 		convert_pfn_mfn(level3_kernel_pgt);
+		convert_pfn_mfn(level3_vmalloc_start_pgt);
+		convert_pfn_mfn(level3_vmalloc_end_pgt);
+		convert_pfn_mfn(level3_vmemmap_pgt);
 	}
 	/* We get [511][511] and have Xen's version of level2_kernel_pgt */
 	l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd);
@@ -1933,8 +1936,12 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
 		set_page_prot(init_level4_pgt, PAGE_KERNEL_RO);
 		set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO);
 		set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO);
+		set_page_prot(level3_vmalloc_start_pgt, PAGE_KERNEL_RO);
+		set_page_prot(level3_vmalloc_end_pgt, PAGE_KERNEL_RO);
+		set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO);
 		set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO);
 		set_page_prot(level2_ident_pgt, PAGE_KERNEL_RO);
+		set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO);
 		set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO);
 		set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO);
 
@@ -2120,6 +2127,7 @@ static void __init xen_post_allocator_init(void)
 	pv_mmu_ops.set_pud = xen_set_pud;
 #if PAGETABLE_LEVELS == 4
 	pv_mmu_ops.set_pgd = xen_set_pgd;
+	pv_mmu_ops.set_pgd_batched = xen_set_pgd;
 #endif
 
 	/* This will work as long as patching hasn't happened yet
@@ -2198,6 +2206,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = {
 	.pud_val = PV_CALLEE_SAVE(xen_pud_val),
 	.make_pud = PV_CALLEE_SAVE(xen_make_pud),
 	.set_pgd = xen_set_pgd_hyper,
+	.set_pgd_batched = xen_set_pgd_hyper,
 
 	.alloc_pud = xen_alloc_pmd_init,
 	.release_pud = xen_release_pmd_init,
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 7005974..54fb05f 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -283,17 +283,13 @@ static void __init xen_smp_prepare_boot_cpu(void)
 
 	if (xen_pv_domain()) {
 		if (!xen_feature(XENFEAT_writable_page_tables))
-			/* We've switched to the "real" per-cpu gdt, so make
-			 * sure the old memory can be recycled. */
-			make_lowmem_page_readwrite(xen_initial_gdt);
-
 #ifdef CONFIG_X86_32
 		/*
 		 * Xen starts us with XEN_FLAT_RING1_DS, but linux code
 		 * expects __USER_DS
 		 */
-		loadsegment(ds, __USER_DS);
-		loadsegment(es, __USER_DS);
+		loadsegment(ds, __KERNEL_DS);
+		loadsegment(es, __KERNEL_DS);
 #endif
 
 		xen_filter_cpu_maps();
@@ -372,7 +368,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
 #ifdef CONFIG_X86_32
 	/* Note: PVH is not yet supported on x86_32. */
 	ctxt->user_regs.fs = __KERNEL_PERCPU;
-	ctxt->user_regs.gs = __KERNEL_STACK_CANARY;
+	savesegment(gs, ctxt->user_regs.gs);
 #endif
 	ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle;
 
@@ -381,8 +377,8 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
 	if (!xen_feature(XENFEAT_auto_translated_physmap)) {
 		ctxt->flags = VGCF_IN_KERNEL;
 		ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */
-		ctxt->user_regs.ds = __USER_DS;
-		ctxt->user_regs.es = __USER_DS;
+		ctxt->user_regs.ds = __KERNEL_DS;
+		ctxt->user_regs.es = __KERNEL_DS;
 		ctxt->user_regs.ss = __KERNEL_DS;
 
 		xen_copy_trap_info(ctxt->trap_ctxt);
@@ -437,14 +433,13 @@ static int xen_cpu_up(unsigned int cpu, struct task_struct *idle)
 	int rc;
 
 	per_cpu(current_task, cpu) = idle;
+	per_cpu(current_tinfo, cpu) = &idle->tinfo;
 #ifdef CONFIG_X86_32
 	irq_ctx_init(cpu);
 #else
 	clear_tsk_thread_flag(idle, TIF_FORK);
 #endif
-	per_cpu(kernel_stack, cpu) =
-		(unsigned long)task_stack_page(idle) -
-		KERNEL_STACK_OFFSET + THREAD_SIZE;
+	per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE;
 
 	xen_setup_runstate_info(cpu);
 	xen_setup_timer(cpu);
@@ -720,7 +715,7 @@ static const struct smp_ops xen_smp_ops __initconst = {
 
 void __init xen_smp_init(void)
 {
-	smp_ops = xen_smp_ops;
+	memcpy((void *)&smp_ops, &xen_smp_ops, sizeof smp_ops);
 	xen_fill_possible_map();
 }
 
diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S
index fd92a64..1f72641 100644
--- a/arch/x86/xen/xen-asm_32.S
+++ b/arch/x86/xen/xen-asm_32.S
@@ -99,7 +99,7 @@ ENTRY(xen_iret)
 	pushw %fs
 	movl $(__KERNEL_PERCPU), %eax
 	movl %eax, %fs
-	movl %fs:xen_vcpu, %eax
+	mov PER_CPU_VAR(xen_vcpu), %eax
 	POP_FS
 #else
 	movl %ss:xen_vcpu, %eax
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index 485b695..fda3e7c 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -39,6 +39,17 @@ ENTRY(startup_xen)
 #ifdef CONFIG_X86_32
 	mov %esi,xen_start_info
 	mov $init_thread_union+THREAD_SIZE,%esp
+#ifdef CONFIG_SMP
+	movl $cpu_gdt_table,%edi
+	movl $__per_cpu_load,%eax
+	movw %ax,__KERNEL_PERCPU + 2(%edi)
+	rorl $16,%eax
+	movb %al,__KERNEL_PERCPU + 4(%edi)
+	movb %ah,__KERNEL_PERCPU + 7(%edi)
+	movl $__per_cpu_end - 1,%eax
+	subl $__per_cpu_start,%eax
+	movw %ax,__KERNEL_PERCPU + 0(%edi)
+#endif
 #else
 	mov %rsi,xen_start_info
 	mov $init_thread_union+THREAD_SIZE,%rsp
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 97d8765..c4526ec 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -10,8 +10,6 @@
 extern const char xen_hypervisor_callback[];
 extern const char xen_failsafe_callback[];
 
-extern void *xen_initial_gdt;
-
 struct trap_info;
 void xen_copy_trap_info(struct trap_info *traps);
 
diff --git a/arch/xtensa/variants/dc232b/include/variant/core.h b/arch/xtensa/variants/dc232b/include/variant/core.h
index 525bd3d..ef888b1 100644
--- a/arch/xtensa/variants/dc232b/include/variant/core.h
+++ b/arch/xtensa/variants/dc232b/include/variant/core.h
@@ -119,9 +119,9 @@
   ----------------------------------------------------------------------*/
 
 #define XCHAL_ICACHE_LINESIZE		32	/* I-cache line size in bytes */
-#define XCHAL_DCACHE_LINESIZE		32	/* D-cache line size in bytes */
 #define XCHAL_ICACHE_LINEWIDTH		5	/* log2(I line size in bytes) */
 #define XCHAL_DCACHE_LINEWIDTH		5	/* log2(D line size in bytes) */
+#define XCHAL_DCACHE_LINESIZE		(_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH)	/* D-cache line size in bytes */
 
 #define XCHAL_ICACHE_SIZE		16384	/* I-cache size in bytes or 0 */
 #define XCHAL_DCACHE_SIZE		16384	/* D-cache size in bytes or 0 */
diff --git a/arch/xtensa/variants/fsf/include/variant/core.h b/arch/xtensa/variants/fsf/include/variant/core.h
index 2f33760..835e50a 100644
--- a/arch/xtensa/variants/fsf/include/variant/core.h
+++ b/arch/xtensa/variants/fsf/include/variant/core.h
@@ -11,6 +11,7 @@
 #ifndef _XTENSA_CORE_H
 #define _XTENSA_CORE_H
 
+#include <linux/const.h>
 
 /****************************************************************************
 	    Parameters Useful for Any Code, USER or PRIVILEGED
@@ -112,9 +113,9 @@
   ----------------------------------------------------------------------*/
 
 #define XCHAL_ICACHE_LINESIZE		16	/* I-cache line size in bytes */
-#define XCHAL_DCACHE_LINESIZE		16	/* D-cache line size in bytes */
 #define XCHAL_ICACHE_LINEWIDTH		4	/* log2(I line size in bytes) */
 #define XCHAL_DCACHE_LINEWIDTH		4	/* log2(D line size in bytes) */
+#define XCHAL_DCACHE_LINESIZE		(_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */
 
 #define XCHAL_ICACHE_SIZE		8192	/* I-cache size in bytes or 0 */
 #define XCHAL_DCACHE_SIZE		8192	/* D-cache size in bytes or 0 */
diff --git a/arch/xtensa/variants/s6000/include/variant/core.h b/arch/xtensa/variants/s6000/include/variant/core.h
index af00795..2bb8105 100644
--- a/arch/xtensa/variants/s6000/include/variant/core.h
+++ b/arch/xtensa/variants/s6000/include/variant/core.h
@@ -11,6 +11,7 @@
 #ifndef _XTENSA_CORE_CONFIGURATION_H
 #define _XTENSA_CORE_CONFIGURATION_H
 
+#include <linux/const.h>
 
 /****************************************************************************
 	    Parameters Useful for Any Code, USER or PRIVILEGED
@@ -118,9 +119,9 @@
   ----------------------------------------------------------------------*/
 
 #define XCHAL_ICACHE_LINESIZE		16	/* I-cache line size in bytes */
-#define XCHAL_DCACHE_LINESIZE		16	/* D-cache line size in bytes */
 #define XCHAL_ICACHE_LINEWIDTH		4	/* log2(I line size in bytes) */
 #define XCHAL_DCACHE_LINEWIDTH		4	/* log2(D line size in bytes) */
+#define XCHAL_DCACHE_LINESIZE		(_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH)	/* D-cache line size in bytes */
 
 #define XCHAL_ICACHE_SIZE		32768	/* I-cache size in bytes or 0 */
 #define XCHAL_DCACHE_SIZE		32768	/* D-cache size in bytes or 0 */
diff --git a/block/bio.c b/block/bio.c
index 0ec61c9..93b94060 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -1159,7 +1159,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
 		/*
 		 * Overflow, abort
 		 */
-		if (end < start)
+		if (end < start || end - start > INT_MAX - nr_pages)
 			return ERR_PTR(-EINVAL);
 
 		nr_pages += end - start;
@@ -1293,7 +1293,7 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
 		/*
 		 * Overflow, abort
 		 */
-		if (end < start)
+		if (end < start || end - start > INT_MAX - nr_pages)
 			return ERR_PTR(-EINVAL);
 
 		nr_pages += end - start;
@@ -1555,7 +1555,7 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
 	const int read = bio_data_dir(bio) == READ;
 	struct bio_map_data *bmd = bio->bi_private;
 	int i;
-	char *p = bmd->sgvecs[0].iov_base;
+	char *p = (char __force_kernel *)bmd->sgvecs[0].iov_base;
 
 	bio_for_each_segment_all(bvec, bio, i) {
 		char *addr = page_address(bvec->bv_page);
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 28d227c..d4c0bad 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -822,7 +822,7 @@ static void blkcg_css_free(struct cgroup_subsys_state *css)
 static struct cgroup_subsys_state *
 blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
 {
-	static atomic64_t id_seq = ATOMIC64_INIT(0);
+	static atomic64_unchecked_t id_seq = ATOMIC64_INIT(0);
 	struct blkcg *blkcg;
 
 	if (!parent_css) {
@@ -836,7 +836,7 @@ blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
 
 	blkcg->cfq_weight = CFQ_WEIGHT_DEFAULT;
 	blkcg->cfq_leaf_weight = CFQ_WEIGHT_DEFAULT;
-	blkcg->id = atomic64_inc_return(&id_seq); /* root is 0, start from 1 */
+	blkcg->id = atomic64_inc_return_unchecked(&id_seq); /* root is 0, start from 1 */
 done:
 	spin_lock_init(&blkcg->lock);
 	INIT_RADIX_TREE(&blkcg->blkg_tree, GFP_ATOMIC);
diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c
index 0736729..2ec3b48 100644
--- a/block/blk-iopoll.c
+++ b/block/blk-iopoll.c
@@ -74,7 +74,7 @@ void blk_iopoll_complete(struct blk_iopoll *iop)
 }
 EXPORT_SYMBOL(blk_iopoll_complete);
 
-static void blk_iopoll_softirq(struct softirq_action *h)
+static __latent_entropy void blk_iopoll_softirq(void)
 {
 	struct list_head *list = this_cpu_ptr(&blk_cpu_iopoll);
 	int rearm = 0, budget = blk_iopoll_budget;
diff --git a/block/blk-map.c b/block/blk-map.c
index f890d43..97b0482 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -300,7 +300,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
 	if (!len || !kbuf)
 		return -EINVAL;
 
-	do_copy = !blk_rq_aligned(q, addr, len) || object_is_on_stack(kbuf);
+	do_copy = !blk_rq_aligned(q, addr, len) || object_starts_on_stack(kbuf);
 	if (do_copy)
 		bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading);
 	else
diff --git a/block/blk-softirq.c b/block/blk-softirq.c
index 53b1737..08177d2e 100644
--- a/block/blk-softirq.c
+++ b/block/blk-softirq.c
@@ -18,7 +18,7 @@ static DEFINE_PER_CPU(struct list_head, blk_cpu_done);
  * Softirq action handler - move entries to local list and loop over them
  * while passing them to the queue registered handler.
  */
-static void blk_done_softirq(struct softirq_action *h)
+static __latent_entropy void blk_done_softirq(void)
 {
 	struct list_head *cpu_list, local_list;
 
diff --git a/block/bsg.c b/block/bsg.c
index ff46add..c4ba8ee 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -176,16 +176,24 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
 				struct sg_io_v4 *hdr, struct bsg_device *bd,
 				fmode_t has_write_perm)
 {
+	unsigned char tmpcmd[sizeof(rq->__cmd)];
+	unsigned char *cmdptr;
+
 	if (hdr->request_len > BLK_MAX_CDB) {
 		rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
 		if (!rq->cmd)
 			return -ENOMEM;
-	}
+		cmdptr = rq->cmd;
+	} else
+		cmdptr = tmpcmd;
 
-	if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request,
+	if (copy_from_user(cmdptr, (void __user *)(unsigned long)hdr->request,
 			   hdr->request_len))
 		return -EFAULT;
 
+	if (cmdptr != rq->cmd)
+		memcpy(rq->cmd, cmdptr, hdr->request_len);
+
 	if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
 		if (blk_verify_command(rq->cmd, has_write_perm))
 			return -EPERM;
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
index a0926a6..b2b14b2 100644
--- a/block/compat_ioctl.c
+++ b/block/compat_ioctl.c
@@ -156,7 +156,7 @@ static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode,
 	cgc = compat_alloc_user_space(sizeof(*cgc));
 	cgc32 = compat_ptr(arg);
 
-	if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
+	if (copy_in_user(cgc->cmd, cgc32->cmd, sizeof(cgc->cmd)) ||
 	    get_user(data, &cgc32->buffer) ||
 	    put_user(compat_ptr(data), &cgc->buffer) ||
 	    copy_in_user(&cgc->buflen, &cgc32->buflen,
@@ -341,7 +341,7 @@ static int compat_fd_ioctl(struct block_device *bdev, fmode_t mode,
 		err |= __get_user(f->spec1, &uf->spec1);
 		err |= __get_user(f->fmt_gap, &uf->fmt_gap);
 		err |= __get_user(name, &uf->name);
-		f->name = compat_ptr(name);
+		f->name = (void __force_kernel *)compat_ptr(name);
 		if (err) {
 			err = -EFAULT;
 			goto out;
diff --git a/block/genhd.c b/block/genhd.c
index 791f419..89f21c4 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -467,21 +467,24 @@ static char *bdevt_str(dev_t devt, char *buf)
 
 /*
  * Register device numbers dev..(dev+range-1)
- * range must be nonzero
+ * Noop if @range is zero.
  * The hash chain is sorted on range, so that subranges can override.
  */
 void blk_register_region(dev_t devt, unsigned long range, struct module *module,
 			 struct kobject *(*probe)(dev_t, int *, void *),
 			 int (*lock)(dev_t, void *), void *data)
 {
-	kobj_map(bdev_map, devt, range, module, probe, lock, data);
+	if (range)
+		kobj_map(bdev_map, devt, range, module, probe, lock, data);
 }
 
 EXPORT_SYMBOL(blk_register_region);
 
+/* undo blk_register_region(), noop if @range is zero */
 void blk_unregister_region(dev_t devt, unsigned long range)
 {
-	kobj_unmap(bdev_map, devt, range);
+	if (range)
+		kobj_unmap(bdev_map, devt, range);
 }
 
 EXPORT_SYMBOL(blk_unregister_region);
diff --git a/block/partitions/efi.c b/block/partitions/efi.c
index dc51f46..d5446a8 100644
--- a/block/partitions/efi.c
+++ b/block/partitions/efi.c
@@ -293,14 +293,14 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
 	if (!gpt)
 		return NULL;
 
+	if (!le32_to_cpu(gpt->num_partition_entries))
+		return NULL;
+	pte = kcalloc(le32_to_cpu(gpt->num_partition_entries), le32_to_cpu(gpt->sizeof_partition_entry), GFP_KERNEL);
+	if (!pte)
+		return NULL;
+
 	count = le32_to_cpu(gpt->num_partition_entries) *
                 le32_to_cpu(gpt->sizeof_partition_entry);
-	if (!count)
-		return NULL;
-	pte = kmalloc(count, GFP_KERNEL);
-	if (!pte)
-		return NULL;
-
 	if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba),
 			(u8 *) pte, count) < count) {
 		kfree(pte);
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index 84ab119..a217f27 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -67,7 +67,7 @@ static int scsi_get_bus(struct request_queue *q, int __user *p)
 	return put_user(0, p);
 }
 
-static int sg_get_timeout(struct request_queue *q)
+static int __intentional_overflow(-1) sg_get_timeout(struct request_queue *q)
 {
 	return jiffies_to_clock_t(q->sg_timeout);
 }
@@ -220,8 +220,20 @@ EXPORT_SYMBOL(blk_verify_command);
 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
 			     struct sg_io_hdr *hdr, fmode_t mode)
 {
-	if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
+	unsigned char tmpcmd[sizeof(rq->__cmd)];
+	unsigned char *cmdptr;
+
+	if (rq->cmd != rq->__cmd)
+		cmdptr = rq->cmd;
+	else
+		cmdptr = tmpcmd;
+
+	if (copy_from_user(cmdptr, hdr->cmdp, hdr->cmd_len))
 		return -EFAULT;
+
+	if (cmdptr != rq->cmd)
+		memcpy(rq->cmd, cmdptr, hdr->cmd_len);
+
 	if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
 		return -EPERM;
 
@@ -413,6 +425,8 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
 	int err;
 	unsigned int in_len, out_len, bytes, opcode, cmdlen;
 	char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
+	unsigned char tmpcmd[sizeof(rq->__cmd)];
+	unsigned char *cmdptr;
 
 	if (!sic)
 		return -EINVAL;
@@ -451,9 +465,18 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
 	 */
 	err = -EFAULT;
 	rq->cmd_len = cmdlen;
-	if (copy_from_user(rq->cmd, sic->data, cmdlen))
+
+	if (rq->cmd != rq->__cmd)
+		cmdptr = rq->cmd;
+	else
+		cmdptr = tmpcmd;
+
+	if (copy_from_user(cmdptr, sic->data, cmdlen))
 		goto error;
 
+	if (rq->cmd != cmdptr)
+		memcpy(rq->cmd, cmdptr, cmdlen);
+
 	if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
 		goto error;
 
diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index 7bdd61b..afec999 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -63,7 +63,7 @@ struct cryptd_blkcipher_ctx {
 
 struct cryptd_blkcipher_request_ctx {
 	crypto_completion_t complete;
-};
+} __no_const;
 
 struct cryptd_hash_ctx {
 	struct crypto_shash *child;
@@ -80,7 +80,7 @@ struct cryptd_aead_ctx {
 
 struct cryptd_aead_request_ctx {
 	crypto_completion_t complete;
-};
+} __no_const;
 
 static void cryptd_queue_worker(struct work_struct *work);
 
diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
index 309d345..1632720 100644
--- a/crypto/pcrypt.c
+++ b/crypto/pcrypt.c
@@ -440,7 +440,7 @@ static int pcrypt_sysfs_add(struct padata_instance *pinst, const char *name)
 	int ret;
 
 	pinst->kobj.kset = pcrypt_kset;
-	ret = kobject_add(&pinst->kobj, NULL, name);
+	ret = kobject_add(&pinst->kobj, NULL, "%s", name);
 	if (!ret)
 		kobject_uevent(&pinst->kobj, KOBJ_ADD);
 
diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index 6921c7f..78e1af7 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -63,11 +63,12 @@ static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id);
 /* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */
 
 static struct acpi_sleep_functions acpi_sleep_dispatch[] = {
-	{ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_sleep),
-	 acpi_hw_extended_sleep},
-	{ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake_prep),
-	 acpi_hw_extended_wake_prep},
-	{ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake), acpi_hw_extended_wake}
+	{.legacy_function = ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_sleep),
+	 .extended_function = acpi_hw_extended_sleep},
+	{.legacy_function = ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake_prep),
+	 .extended_function = acpi_hw_extended_wake_prep},
+	{.legacy_function = ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake),
+	 .extended_function = acpi_hw_extended_wake}
 };
 
 /*
diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
index e5bcd91..74f050d 100644
--- a/drivers/acpi/apei/apei-internal.h
+++ b/drivers/acpi/apei/apei-internal.h
@@ -19,7 +19,7 @@ typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
 struct apei_exec_ins_type {
 	u32 flags;
 	apei_exec_ins_func_t run;
-};
+} __do_const;
 
 struct apei_exec_context {
 	u32 ip;
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
index dab7cb7..f0d2994 100644
--- a/drivers/acpi/apei/ghes.c
+++ b/drivers/acpi/apei/ghes.c
@@ -500,7 +500,7 @@ static void __ghes_print_estatus(const char *pfx,
 				 const struct acpi_hest_generic *generic,
 				 const struct acpi_generic_status *estatus)
 {
-	static atomic_t seqno;
+	static atomic_unchecked_t seqno;
 	unsigned int curr_seqno;
 	char pfx_seq[64];
 
@@ -511,7 +511,7 @@ static void __ghes_print_estatus(const char *pfx,
 		else
 			pfx = KERN_ERR;
 	}
-	curr_seqno = atomic_inc_return(&seqno);
+	curr_seqno = atomic_inc_return_unchecked(&seqno);
 	snprintf(pfx_seq, sizeof(pfx_seq), "%s{%u}" HW_ERR, pfx, curr_seqno);
 	printk("%s""Hardware error from APEI Generic Hardware Error Source: %d\n",
 	       pfx_seq, generic->header.source_id);
diff --git a/drivers/acpi/bgrt.c b/drivers/acpi/bgrt.c
index a83e3c6..c3d617f 100644
--- a/drivers/acpi/bgrt.c
+++ b/drivers/acpi/bgrt.c
@@ -86,8 +86,10 @@ static int __init bgrt_init(void)
 	if (!bgrt_image)
 		return -ENODEV;
 
-	bin_attr_image.private = bgrt_image;
-	bin_attr_image.size = bgrt_image_size;
+	pax_open_kernel();
+	*(void **)&bin_attr_image.private = bgrt_image;
+	*(size_t *)&bin_attr_image.size = bgrt_image_size;
+	pax_close_kernel();
 
 	bgrt_kobj = kobject_create_and_add("bgrt", acpi_kobj);
 	if (!bgrt_kobj)
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 3d8413d..95f638c 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -51,7 +51,7 @@ struct acpi_blacklist_item {
 	u32 is_critical_error;
 };
 
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
+static const struct dmi_system_id acpi_osi_dmi_table[] __initconst;
 
 /*
  * POLICY: If *anything* doesn't work, put it on the blacklist.
@@ -163,7 +163,7 @@ static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
 	return 0;
 }
 
-static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
+static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = {
 	{
 	.callback = dmi_disable_osi_vista,
 	.ident = "Fujitsu Siemens",
diff --git a/drivers/acpi/custom_method.c b/drivers/acpi/custom_method.c
index c68e724..e863008 100644
--- a/drivers/acpi/custom_method.c
+++ b/drivers/acpi/custom_method.c
@@ -29,6 +29,10 @@ static ssize_t cm_write(struct file *file, const char __user * user_buf,
 	struct acpi_table_header table;
 	acpi_status status;
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+	return -EPERM;
+#endif
+
 	if (!(*ppos)) {
 		/* parse the table header to get the table length */
 		if (count <= sizeof(struct acpi_table_header))
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 17f9ec5..d9a455e 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -952,7 +952,7 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
 {
 	int i, count = CPUIDLE_DRIVER_STATE_START;
 	struct acpi_processor_cx *cx;
-	struct cpuidle_state *state;
+	cpuidle_state_no_const *state;
 	struct cpuidle_driver *drv = &acpi_idle_driver;
 
 	if (!pr->flags.power_setup_done)
diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
index 38cb978..352c761 100644
--- a/drivers/acpi/sysfs.c
+++ b/drivers/acpi/sysfs.c
@@ -423,11 +423,11 @@ static u32 num_counters;
 static struct attribute **all_attrs;
 static u32 acpi_gpe_count;
 
-static struct attribute_group interrupt_stats_attr_group = {
+static attribute_group_no_const interrupt_stats_attr_group = {
 	.name = "interrupts",
 };
 
-static struct kobj_attribute *counter_attrs;
+static kobj_attribute_no_const *counter_attrs;
 
 static void delete_gpe_attr_array(void)
 {
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index d72ce04..d6ab3c2 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -1257,7 +1257,7 @@ int ahci_kick_engine(struct ata_port *ap)
 }
 EXPORT_SYMBOL_GPL(ahci_kick_engine);
 
-static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
+static int __intentional_overflow(-1) ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
 				struct ata_taskfile *tf, int is_cmd, u16 flags,
 				unsigned long timeout_msec)
 {
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 677c0c1..354b89b 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -98,7 +98,7 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
 static void ata_dev_xfermask(struct ata_device *dev);
 static unsigned long ata_dev_blacklisted(const struct ata_device *dev);
 
-atomic_t ata_print_id = ATOMIC_INIT(0);
+atomic_unchecked_t ata_print_id = ATOMIC_INIT(0);
 
 struct ata_force_param {
 	const char	*name;
@@ -4863,7 +4863,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
 	struct ata_port *ap;
 	unsigned int tag;
 
-	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+	BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
 	ap = qc->ap;
 
 	qc->flags = 0;
@@ -4879,7 +4879,7 @@ void __ata_qc_complete(struct ata_queued_cmd *qc)
 	struct ata_port *ap;
 	struct ata_link *link;
 
-	WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
+	BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
 	WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
 	ap = qc->ap;
 	link = qc->dev->link;
@@ -5983,6 +5983,7 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops)
 		return;
 
 	spin_lock(&lock);
+	pax_open_kernel();
 
 	for (cur = ops->inherits; cur; cur = cur->inherits) {
 		void **inherit = (void **)cur;
@@ -5996,8 +5997,9 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops)
 		if (IS_ERR(*pp))
 			*pp = NULL;
 
-	ops->inherits = NULL;
+	*(struct ata_port_operations **)&ops->inherits = NULL;
 
+	pax_close_kernel();
 	spin_unlock(&lock);
 }
 
@@ -6193,7 +6195,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
 
 	/* give ports names and add SCSI hosts */
 	for (i = 0; i < host->n_ports; i++) {
-		host->ports[i]->print_id = atomic_inc_return(&ata_print_id);
+		host->ports[i]->print_id = atomic_inc_return_unchecked(&ata_print_id);
 		host->ports[i]->local_port_no = i + 1;
 	}
 
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 72691fd..ad104c0 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -4151,7 +4151,7 @@ int ata_sas_port_init(struct ata_port *ap)
 
 	if (rc)
 		return rc;
-	ap->print_id = atomic_inc_return(&ata_print_id);
+	ap->print_id = atomic_inc_return_unchecked(&ata_print_id);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(ata_sas_port_init);
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 45b5ab3..98446b8 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -53,7 +53,7 @@ enum {
 	ATA_DNXFER_QUIET	= (1 << 31),
 };
 
-extern atomic_t ata_print_id;
+extern atomic_unchecked_t ata_print_id;
 extern int atapi_passthru16;
 extern int libata_fua;
 extern int libata_noacpi;
diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
index 4edb1a8..84e1658 100644
--- a/drivers/ata/pata_arasan_cf.c
+++ b/drivers/ata/pata_arasan_cf.c
@@ -865,7 +865,9 @@ static int arasan_cf_probe(struct platform_device *pdev)
 	/* Handle platform specific quirks */
 	if (quirk) {
 		if (quirk & CF_BROKEN_PIO) {
-			ap->ops->set_piomode = NULL;
+			pax_open_kernel();
+			*(void **)&ap->ops->set_piomode = NULL;
+			pax_close_kernel();
 			ap->pio_mask = 0;
 		}
 		if (quirk & CF_BROKEN_MWDMA)
diff --git a/drivers/atm/adummy.c b/drivers/atm/adummy.c
index f9b983a..887b9d8 100644
--- a/drivers/atm/adummy.c
+++ b/drivers/atm/adummy.c
@@ -114,7 +114,7 @@ adummy_send(struct atm_vcc *vcc, struct sk_buff *skb)
 		vcc->pop(vcc, skb);
 	else
 		dev_kfree_skb_any(skb);
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 
 	return 0;
 }
diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
index f1a9198..f466a4a 100644
--- a/drivers/atm/ambassador.c
+++ b/drivers/atm/ambassador.c
@@ -454,7 +454,7 @@ static void tx_complete (amb_dev * dev, tx_out * tx) {
   PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx);
   
   // VC layer stats
-  atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
+  atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
   
   // free the descriptor
   kfree (tx_descr);
@@ -495,7 +495,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) {
 	  dump_skb ("<<<", vc, skb);
 	  
 	  // VC layer stats
-	  atomic_inc(&atm_vcc->stats->rx);
+	  atomic_inc_unchecked(&atm_vcc->stats->rx);
 	  __net_timestamp(skb);
 	  // end of our responsibility
 	  atm_vcc->push (atm_vcc, skb);
@@ -510,7 +510,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) {
       } else {
       	PRINTK (KERN_INFO, "dropped over-size frame");
 	// should we count this?
-	atomic_inc(&atm_vcc->stats->rx_drop);
+	atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
       }
       
     } else {
@@ -1338,7 +1338,7 @@ static int amb_send (struct atm_vcc * atm_vcc, struct sk_buff * skb) {
   }
   
   if (check_area (skb->data, skb->len)) {
-    atomic_inc(&atm_vcc->stats->tx_err);
+    atomic_inc_unchecked(&atm_vcc->stats->tx_err);
     return -ENOMEM; // ?
   }
   
diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c
index 0e3f8f9..765a7a5 100644
--- a/drivers/atm/atmtcp.c
+++ b/drivers/atm/atmtcp.c
@@ -206,7 +206,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
 		if (vcc->pop) vcc->pop(vcc,skb);
 		else dev_kfree_skb(skb);
 		if (dev_data) return 0;
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -ENOLINK;
 	}
 	size = skb->len+sizeof(struct atmtcp_hdr);
@@ -214,7 +214,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
 	if (!new_skb) {
 		if (vcc->pop) vcc->pop(vcc,skb);
 		else dev_kfree_skb(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -ENOBUFS;
 	}
 	hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr));
@@ -225,8 +225,8 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
 	if (vcc->pop) vcc->pop(vcc,skb);
 	else dev_kfree_skb(skb);
 	out_vcc->push(out_vcc,new_skb);
-	atomic_inc(&vcc->stats->tx);
-	atomic_inc(&out_vcc->stats->rx);
+	atomic_inc_unchecked(&vcc->stats->tx);
+	atomic_inc_unchecked(&out_vcc->stats->rx);
 	return 0;
 }
 
@@ -299,7 +299,7 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
 	out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci));
 	read_unlock(&vcc_sklist_lock);
 	if (!out_vcc) {
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		goto done;
 	}
 	skb_pull(skb,sizeof(struct atmtcp_hdr));
@@ -311,8 +311,8 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
 	__net_timestamp(new_skb);
 	skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len);
 	out_vcc->push(out_vcc,new_skb);
-	atomic_inc(&vcc->stats->tx);
-	atomic_inc(&out_vcc->stats->rx);
+	atomic_inc_unchecked(&vcc->stats->tx);
+	atomic_inc_unchecked(&out_vcc->stats->rx);
 done:
 	if (vcc->pop) vcc->pop(vcc,skb);
 	else dev_kfree_skb(skb);
diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c
index b1955ba..b179940 100644
--- a/drivers/atm/eni.c
+++ b/drivers/atm/eni.c
@@ -522,7 +522,7 @@ static int rx_aal0(struct atm_vcc *vcc)
 		DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n",
 		    vcc->dev->number);
 		length = 0;
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 	}
 	else {
 		length = ATM_CELL_SIZE-1; /* no HEC */
@@ -577,7 +577,7 @@ static int rx_aal5(struct atm_vcc *vcc)
 			    size);
 		}
 		eff = length = 0;
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 	}
 	else {
 		size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2);
@@ -594,7 +594,7 @@ static int rx_aal5(struct atm_vcc *vcc)
 			    "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n",
 			    vcc->dev->number,vcc->vci,length,size << 2,descr);
 			length = eff = 0;
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 		}
 	}
 	skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL;
@@ -767,7 +767,7 @@ rx_dequeued++;
 			vcc->push(vcc,skb);
 			pushed++;
 		}
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 	}
 	wake_up(&eni_dev->rx_wait);
 }
@@ -1227,7 +1227,7 @@ static void dequeue_tx(struct atm_dev *dev)
 		    PCI_DMA_TODEVICE);
 		if (vcc->pop) vcc->pop(vcc,skb);
 		else dev_kfree_skb_irq(skb);
-		atomic_inc(&vcc->stats->tx);
+		atomic_inc_unchecked(&vcc->stats->tx);
 		wake_up(&eni_dev->tx_wait);
 dma_complete++;
 	}
diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
index 82f2ae0..f205c02 100644
--- a/drivers/atm/firestream.c
+++ b/drivers/atm/firestream.c
@@ -749,7 +749,7 @@ static void process_txdone_queue (struct fs_dev *dev, struct queue *q)
 				}
 			}
 
-			atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
+			atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
 
 			fs_dprintk (FS_DEBUG_TXMEM, "i");
 			fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb);
@@ -816,7 +816,7 @@ static void process_incoming (struct fs_dev *dev, struct queue *q)
 #endif
 				skb_put (skb, qe->p1 & 0xffff); 
 				ATM_SKB(skb)->vcc = atm_vcc;
-				atomic_inc(&atm_vcc->stats->rx);
+				atomic_inc_unchecked(&atm_vcc->stats->rx);
 				__net_timestamp(skb);
 				fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb);
 				atm_vcc->push (atm_vcc, skb);
@@ -837,12 +837,12 @@ static void process_incoming (struct fs_dev *dev, struct queue *q)
 				kfree (pe);
 			}
 			if (atm_vcc)
-				atomic_inc(&atm_vcc->stats->rx_drop);
+				atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
 			break;
 		case 0x1f: /*  Reassembly abort: no buffers. */
 			/* Silently increment error counter. */
 			if (atm_vcc)
-				atomic_inc(&atm_vcc->stats->rx_drop);
+				atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
 			break;
 		default: /* Hmm. Haven't written the code to handle the others yet... -- REW */
 			printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n", 
diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c
index d4725fc..2d4ea65 100644
--- a/drivers/atm/fore200e.c
+++ b/drivers/atm/fore200e.c
@@ -931,9 +931,9 @@ fore200e_tx_irq(struct fore200e* fore200e)
 #endif
 		/* check error condition */
 		if (*entry->status & STATUS_ERROR)
-		    atomic_inc(&vcc->stats->tx_err);
+		    atomic_inc_unchecked(&vcc->stats->tx_err);
 		else
-		    atomic_inc(&vcc->stats->tx);
+		    atomic_inc_unchecked(&vcc->stats->tx);
 	    }
 	}
 
@@ -1082,7 +1082,7 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp
     if (skb == NULL) {
 	DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
 
-	atomic_inc(&vcc->stats->rx_drop);
+	atomic_inc_unchecked(&vcc->stats->rx_drop);
 	return -ENOMEM;
     } 
 
@@ -1125,14 +1125,14 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp
 
 	dev_kfree_skb_any(skb);
 
-	atomic_inc(&vcc->stats->rx_drop);
+	atomic_inc_unchecked(&vcc->stats->rx_drop);
 	return -ENOMEM;
     }
 
     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
 
     vcc->push(vcc, skb);
-    atomic_inc(&vcc->stats->rx);
+    atomic_inc_unchecked(&vcc->stats->rx);
 
     ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
 
@@ -1210,7 +1210,7 @@ fore200e_rx_irq(struct fore200e* fore200e)
 		DPRINTK(2, "damaged PDU on %d.%d.%d\n",
 			fore200e->atm_dev->number,
 			entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 	    }
 	}
 
@@ -1655,7 +1655,7 @@ fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb)
 		goto retry_here;
 	    }
 
-	    atomic_inc(&vcc->stats->tx_err);
+	    atomic_inc_unchecked(&vcc->stats->tx_err);
 
 	    fore200e->tx_sat++;
 	    DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
diff --git a/drivers/atm/he.c b/drivers/atm/he.c
index aa6be26..f70a785 100644
--- a/drivers/atm/he.c
+++ b/drivers/atm/he.c
@@ -1690,7 +1690,7 @@ he_service_rbrq(struct he_dev *he_dev, int group)
 
 		if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) {
 			hprintk("HBUF_ERR!  (cid 0x%x)\n", cid);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 			goto return_host_buffers;
 		}
 
@@ -1717,7 +1717,7 @@ he_service_rbrq(struct he_dev *he_dev, int group)
 				RBRQ_LEN_ERR(he_dev->rbrq_head)
 							? "LEN_ERR" : "",
 							vcc->vpi, vcc->vci);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto return_host_buffers;
 		}
 
@@ -1769,7 +1769,7 @@ he_service_rbrq(struct he_dev *he_dev, int group)
 		vcc->push(vcc, skb);
 		spin_lock(&he_dev->global_lock);
 
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 
 return_host_buffers:
 		++pdus_assembled;
@@ -2095,7 +2095,7 @@ __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid)
 					tpd->vcc->pop(tpd->vcc, tpd->skb);
 				else
 					dev_kfree_skb_any(tpd->skb);
-				atomic_inc(&tpd->vcc->stats->tx_err);
+				atomic_inc_unchecked(&tpd->vcc->stats->tx_err);
 			}
 			pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
 			return;
@@ -2507,7 +2507,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
 			vcc->pop(vcc, skb);
 		else
 			dev_kfree_skb_any(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -EINVAL;
 	}
 
@@ -2518,7 +2518,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
 			vcc->pop(vcc, skb);
 		else
 			dev_kfree_skb_any(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -EINVAL;
 	}
 #endif
@@ -2530,7 +2530,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
 			vcc->pop(vcc, skb);
 		else
 			dev_kfree_skb_any(skb);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		spin_unlock_irqrestore(&he_dev->global_lock, flags);
 		return -ENOMEM;
 	}
@@ -2572,7 +2572,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
 					vcc->pop(vcc, skb);
 				else
 					dev_kfree_skb_any(skb);
-				atomic_inc(&vcc->stats->tx_err);
+				atomic_inc_unchecked(&vcc->stats->tx_err);
 				spin_unlock_irqrestore(&he_dev->global_lock, flags);
 				return -ENOMEM;
 			}
@@ -2603,7 +2603,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	__enqueue_tpd(he_dev, tpd, cid);
 	spin_unlock_irqrestore(&he_dev->global_lock, flags);
 
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 
 	return 0;
 }
diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c
index 1dc0519..1aadaf7 100644
--- a/drivers/atm/horizon.c
+++ b/drivers/atm/horizon.c
@@ -1034,7 +1034,7 @@ static void rx_schedule (hrz_dev * dev, int irq) {
 	{
 	  struct atm_vcc * vcc = ATM_SKB(skb)->vcc;
 	  // VC layer stats
-	  atomic_inc(&vcc->stats->rx);
+	  atomic_inc_unchecked(&vcc->stats->rx);
 	  __net_timestamp(skb);
 	  // end of our responsibility
 	  vcc->push (vcc, skb);
@@ -1186,7 +1186,7 @@ static void tx_schedule (hrz_dev * const dev, int irq) {
 	dev->tx_iovec = NULL;
 	
 	// VC layer stats
-	atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
+	atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
 	
 	// free the skb
 	hrz_kfree_skb (skb);
diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
index b621f56..1e3a799 100644
--- a/drivers/atm/idt77252.c
+++ b/drivers/atm/idt77252.c
@@ -812,7 +812,7 @@ drain_scq(struct idt77252_dev *card, struct vc_map *vc)
 		else
 			dev_kfree_skb(skb);
 
-		atomic_inc(&vcc->stats->tx);
+		atomic_inc_unchecked(&vcc->stats->tx);
 	}
 
 	atomic_dec(&scq->used);
@@ -1075,13 +1075,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
 			if ((sb = dev_alloc_skb(64)) == NULL) {
 				printk("%s: Can't allocate buffers for aal0.\n",
 				       card->name);
-				atomic_add(i, &vcc->stats->rx_drop);
+				atomic_add_unchecked(i, &vcc->stats->rx_drop);
 				break;
 			}
 			if (!atm_charge(vcc, sb->truesize)) {
 				RXPRINTK("%s: atm_charge() dropped aal0 packets.\n",
 					 card->name);
-				atomic_add(i - 1, &vcc->stats->rx_drop);
+				atomic_add_unchecked(i - 1, &vcc->stats->rx_drop);
 				dev_kfree_skb(sb);
 				break;
 			}
@@ -1098,7 +1098,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
 			ATM_SKB(sb)->vcc = vcc;
 			__net_timestamp(sb);
 			vcc->push(vcc, sb);
-			atomic_inc(&vcc->stats->rx);
+			atomic_inc_unchecked(&vcc->stats->rx);
 
 			cell += ATM_CELL_PAYLOAD;
 		}
@@ -1135,13 +1135,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
 			         "(CDC: %08x)\n",
 			         card->name, len, rpp->len, readl(SAR_REG_CDC));
 			recycle_rx_pool_skb(card, rpp);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			return;
 		}
 		if (stat & SAR_RSQE_CRC) {
 			RXPRINTK("%s: AAL5 CRC error.\n", card->name);
 			recycle_rx_pool_skb(card, rpp);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			return;
 		}
 		if (skb_queue_len(&rpp->queue) > 1) {
@@ -1152,7 +1152,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
 				RXPRINTK("%s: Can't alloc RX skb.\n",
 					 card->name);
 				recycle_rx_pool_skb(card, rpp);
-				atomic_inc(&vcc->stats->rx_err);
+				atomic_inc_unchecked(&vcc->stats->rx_err);
 				return;
 			}
 			if (!atm_charge(vcc, skb->truesize)) {
@@ -1171,7 +1171,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
 			__net_timestamp(skb);
 
 			vcc->push(vcc, skb);
-			atomic_inc(&vcc->stats->rx);
+			atomic_inc_unchecked(&vcc->stats->rx);
 
 			return;
 		}
@@ -1193,7 +1193,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
 		__net_timestamp(skb);
 
 		vcc->push(vcc, skb);
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 
 		if (skb->truesize > SAR_FB_SIZE_3)
 			add_rx_skb(card, 3, SAR_FB_SIZE_3, 1);
@@ -1304,14 +1304,14 @@ idt77252_rx_raw(struct idt77252_dev *card)
 		if (vcc->qos.aal != ATM_AAL0) {
 			RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n",
 				card->name, vpi, vci);
-			atomic_inc(&vcc->stats->rx_drop);
+			atomic_inc_unchecked(&vcc->stats->rx_drop);
 			goto drop;
 		}
 	
 		if ((sb = dev_alloc_skb(64)) == NULL) {
 			printk("%s: Can't allocate buffers for AAL0.\n",
 			       card->name);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto drop;
 		}
 
@@ -1330,7 +1330,7 @@ idt77252_rx_raw(struct idt77252_dev *card)
 		ATM_SKB(sb)->vcc = vcc;
 		__net_timestamp(sb);
 		vcc->push(vcc, sb);
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 
 drop:
 		skb_pull(queue, 64);
@@ -1955,13 +1955,13 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
 
 	if (vc == NULL) {
 		printk("%s: NULL connection in send().\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
 	if (!test_bit(VCF_TX, &vc->flags)) {
 		printk("%s: Trying to transmit on a non-tx VC.\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -1973,14 +1973,14 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
 		break;
 	default:
 		printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
 
 	if (skb_shinfo(skb)->nr_frags != 0) {
 		printk("%s: No scatter-gather yet.\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return -EINVAL;
 	}
@@ -1988,7 +1988,7 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
 
 	err = queue_skb(card, vc, skb, oam);
 	if (err) {
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb(skb);
 		return err;
 	}
@@ -2011,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags)
 	skb = dev_alloc_skb(64);
 	if (!skb) {
 		printk("%s: Out of memory in send_oam().\n", card->name);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		return -ENOMEM;
 	}
 	atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
index 4217f29..88f547a 100644
--- a/drivers/atm/iphase.c
+++ b/drivers/atm/iphase.c
@@ -1145,7 +1145,7 @@ static int rx_pkt(struct atm_dev *dev)
 	status = (u_short) (buf_desc_ptr->desc_mode);  
 	if (status & (RX_CER | RX_PTE | RX_OFL))  
 	{  
-                atomic_inc(&vcc->stats->rx_err);
+                atomic_inc_unchecked(&vcc->stats->rx_err);
 		IF_ERR(printk("IA: bad packet, dropping it");)  
                 if (status & RX_CER) { 
                     IF_ERR(printk(" cause: packet CRC error\n");)
@@ -1168,7 +1168,7 @@ static int rx_pkt(struct atm_dev *dev)
 	len = dma_addr - buf_addr;  
         if (len > iadev->rx_buf_sz) {
            printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
-           atomic_inc(&vcc->stats->rx_err);
+           atomic_inc_unchecked(&vcc->stats->rx_err);
 	   goto out_free_desc;
         }
 		  
@@ -1318,7 +1318,7 @@ static void rx_dle_intr(struct atm_dev *dev)
           ia_vcc = INPH_IA_VCC(vcc);
           if (ia_vcc == NULL)
           {
-             atomic_inc(&vcc->stats->rx_err);
+             atomic_inc_unchecked(&vcc->stats->rx_err);
              atm_return(vcc, skb->truesize);
              dev_kfree_skb_any(skb);
              goto INCR_DLE;
@@ -1330,7 +1330,7 @@ static void rx_dle_intr(struct atm_dev *dev)
           if ((length > iadev->rx_buf_sz) || (length > 
                               (skb->len - sizeof(struct cpcs_trailer))))
           {
-             atomic_inc(&vcc->stats->rx_err);
+             atomic_inc_unchecked(&vcc->stats->rx_err);
              IF_ERR(printk("rx_dle_intr: Bad  AAL5 trailer %d (skb len %d)", 
                                                             length, skb->len);)
              atm_return(vcc, skb->truesize);
@@ -1346,7 +1346,7 @@ static void rx_dle_intr(struct atm_dev *dev)
 
 	  IF_RX(printk("rx_dle_intr: skb push");)  
 	  vcc->push(vcc,skb);  
-	  atomic_inc(&vcc->stats->rx);
+	  atomic_inc_unchecked(&vcc->stats->rx);
           iadev->rx_pkt_cnt++;
       }  
 INCR_DLE:
@@ -2826,15 +2826,15 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
          {
              struct k_sonet_stats *stats;
              stats = &PRIV(_ia_dev[board])->sonet_stats;
-             printk("section_bip: %d\n", atomic_read(&stats->section_bip));
-             printk("line_bip   : %d\n", atomic_read(&stats->line_bip));
-             printk("path_bip   : %d\n", atomic_read(&stats->path_bip));
-             printk("line_febe  : %d\n", atomic_read(&stats->line_febe));
-             printk("path_febe  : %d\n", atomic_read(&stats->path_febe));
-             printk("corr_hcs   : %d\n", atomic_read(&stats->corr_hcs));
-             printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
-             printk("tx_cells   : %d\n", atomic_read(&stats->tx_cells));
-             printk("rx_cells   : %d\n", atomic_read(&stats->rx_cells));
+             printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip));
+             printk("line_bip   : %d\n", atomic_read_unchecked(&stats->line_bip));
+             printk("path_bip   : %d\n", atomic_read_unchecked(&stats->path_bip));
+             printk("line_febe  : %d\n", atomic_read_unchecked(&stats->line_febe));
+             printk("path_febe  : %d\n", atomic_read_unchecked(&stats->path_febe));
+             printk("corr_hcs   : %d\n", atomic_read_unchecked(&stats->corr_hcs));
+             printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs));
+             printk("tx_cells   : %d\n", atomic_read_unchecked(&stats->tx_cells));
+             printk("rx_cells   : %d\n", atomic_read_unchecked(&stats->rx_cells));
          }
             ia_cmds.status = 0;
             break;
@@ -2939,7 +2939,7 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
 	if ((desc == 0) || (desc > iadev->num_tx_desc))  
 	{  
 		IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);) 
-                atomic_inc(&vcc->stats->tx);
+                atomic_inc_unchecked(&vcc->stats->tx);
 		if (vcc->pop)   
 		    vcc->pop(vcc, skb);   
 		else  
@@ -3044,14 +3044,14 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
         ATM_DESC(skb) = vcc->vci;
         skb_queue_tail(&iadev->tx_dma_q, skb);
 
-        atomic_inc(&vcc->stats->tx);
+        atomic_inc_unchecked(&vcc->stats->tx);
         iadev->tx_pkt_cnt++;
 	/* Increment transaction counter */  
 	writel(2, iadev->dma+IPHASE5575_TX_COUNTER);  
         
 #if 0        
         /* add flow control logic */ 
-        if (atomic_read(&vcc->stats->tx) % 20 == 0) {
+        if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) {
           if (iavcc->vc_desc_cnt > 10) {
              vcc->tx_quota =  vcc->tx_quota * 3 / 4;
             printk("Tx1:  vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
index fa7d7019..1e404c7 100644
--- a/drivers/atm/lanai.c
+++ b/drivers/atm/lanai.c
@@ -1303,7 +1303,7 @@ static void lanai_send_one_aal5(struct lanai_dev *lanai,
 	vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0);
 	lanai_endtx(lanai, lvcc);
 	lanai_free_skb(lvcc->tx.atmvcc, skb);
-	atomic_inc(&lvcc->tx.atmvcc->stats->tx);
+	atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx);
 }
 
 /* Try to fill the buffer - don't call unless there is backlog */
@@ -1426,7 +1426,7 @@ static void vcc_rx_aal5(struct lanai_vcc *lvcc, int endptr)
 	ATM_SKB(skb)->vcc = lvcc->rx.atmvcc;
 	__net_timestamp(skb);
 	lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb);
-	atomic_inc(&lvcc->rx.atmvcc->stats->rx);
+	atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx);
     out:
 	lvcc->rx.buf.ptr = end;
 	cardvcc_write(lvcc, endptr, vcc_rxreadptr);
@@ -1667,7 +1667,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
 		DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 "
 		    "vcc %d\n", lanai->number, (unsigned int) s, vci);
 		lanai->stats.service_rxnotaal5++;
-		atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+		atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 		return 0;
 	}
 	if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) {
@@ -1679,7 +1679,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
 		int bytes;
 		read_unlock(&vcc_sklist_lock);
 		DPRINTK("got trashed rx pdu on vci %d\n", vci);
-		atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+		atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 		lvcc->stats.x.aal5.service_trash++;
 		bytes = (SERVICE_GET_END(s) * 16) -
 		    (((unsigned long) lvcc->rx.buf.ptr) -
@@ -1691,7 +1691,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
 	}
 	if (s & SERVICE_STREAM) {
 		read_unlock(&vcc_sklist_lock);
-		atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+		atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 		lvcc->stats.x.aal5.service_stream++;
 		printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream "
 		    "PDU on VCI %d!\n", lanai->number, vci);
@@ -1699,7 +1699,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
 		return 0;
 	}
 	DPRINTK("got rx crc error on vci %d\n", vci);
-	atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
+	atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
 	lvcc->stats.x.aal5.service_rxcrc++;
 	lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4];
 	cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr);
diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
index 9988ac9..7c52585 100644
--- a/drivers/atm/nicstar.c
+++ b/drivers/atm/nicstar.c
@@ -1640,7 +1640,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	if ((vc = (vc_map *) vcc->dev_data) == NULL) {
 		printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n",
 		       card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
@@ -1648,7 +1648,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	if (!vc->tx) {
 		printk("nicstar%d: Trying to transmit on a non-tx VC.\n",
 		       card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
@@ -1656,14 +1656,14 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) {
 		printk("nicstar%d: Only AAL0 and AAL5 are supported.\n",
 		       card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
 
 	if (skb_shinfo(skb)->nr_frags != 0) {
 		printk("nicstar%d: No scatter-gather yet.\n", card->index);
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EINVAL;
 	}
@@ -1711,11 +1711,11 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
 	}
 
 	if (push_scqe(card, vc, scq, &scqe, skb) != 0) {
-		atomic_inc(&vcc->stats->tx_err);
+		atomic_inc_unchecked(&vcc->stats->tx_err);
 		dev_kfree_skb_any(skb);
 		return -EIO;
 	}
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 
 	return 0;
 }
@@ -2032,14 +2032,14 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 				printk
 				    ("nicstar%d: Can't allocate buffers for aal0.\n",
 				     card->index);
-				atomic_add(i, &vcc->stats->rx_drop);
+				atomic_add_unchecked(i, &vcc->stats->rx_drop);
 				break;
 			}
 			if (!atm_charge(vcc, sb->truesize)) {
 				RXPRINTK
 				    ("nicstar%d: atm_charge() dropped aal0 packets.\n",
 				     card->index);
-				atomic_add(i - 1, &vcc->stats->rx_drop);	/* already increased by 1 */
+				atomic_add_unchecked(i - 1, &vcc->stats->rx_drop);	/* already increased by 1 */
 				dev_kfree_skb_any(sb);
 				break;
 			}
@@ -2054,7 +2054,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 			ATM_SKB(sb)->vcc = vcc;
 			__net_timestamp(sb);
 			vcc->push(vcc, sb);
-			atomic_inc(&vcc->stats->rx);
+			atomic_inc_unchecked(&vcc->stats->rx);
 			cell += ATM_CELL_PAYLOAD;
 		}
 
@@ -2071,7 +2071,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 			if (iovb == NULL) {
 				printk("nicstar%d: Out of iovec buffers.\n",
 				       card->index);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 				recycle_rx_buf(card, skb);
 				return;
 			}
@@ -2095,7 +2095,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 		   small or large buffer itself. */
 	} else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) {
 		printk("nicstar%d: received too big AAL5 SDU.\n", card->index);
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 		recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
 				      NS_MAX_IOVECS);
 		NS_PRV_IOVCNT(iovb) = 0;
@@ -2115,7 +2115,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 			    ("nicstar%d: Expected a small buffer, and this is not one.\n",
 			     card->index);
 			which_list(card, skb);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			recycle_rx_buf(card, skb);
 			vc->rx_iov = NULL;
 			recycle_iov_buf(card, iovb);
@@ -2128,7 +2128,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 			    ("nicstar%d: Expected a large buffer, and this is not one.\n",
 			     card->index);
 			which_list(card, skb);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
 					      NS_PRV_IOVCNT(iovb));
 			vc->rx_iov = NULL;
@@ -2151,7 +2151,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 				printk(" - PDU size mismatch.\n");
 			else
 				printk(".\n");
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
 					      NS_PRV_IOVCNT(iovb));
 			vc->rx_iov = NULL;
@@ -2165,7 +2165,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 			/* skb points to a small buffer */
 			if (!atm_charge(vcc, skb->truesize)) {
 				push_rxbufs(card, skb);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 			} else {
 				skb_put(skb, len);
 				dequeue_sm_buf(card, skb);
@@ -2175,7 +2175,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 				ATM_SKB(skb)->vcc = vcc;
 				__net_timestamp(skb);
 				vcc->push(vcc, skb);
-				atomic_inc(&vcc->stats->rx);
+				atomic_inc_unchecked(&vcc->stats->rx);
 			}
 		} else if (NS_PRV_IOVCNT(iovb) == 2) {	/* One small plus one large buffer */
 			struct sk_buff *sb;
@@ -2186,7 +2186,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 			if (len <= NS_SMBUFSIZE) {
 				if (!atm_charge(vcc, sb->truesize)) {
 					push_rxbufs(card, sb);
-					atomic_inc(&vcc->stats->rx_drop);
+					atomic_inc_unchecked(&vcc->stats->rx_drop);
 				} else {
 					skb_put(sb, len);
 					dequeue_sm_buf(card, sb);
@@ -2196,7 +2196,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 					ATM_SKB(sb)->vcc = vcc;
 					__net_timestamp(sb);
 					vcc->push(vcc, sb);
-					atomic_inc(&vcc->stats->rx);
+					atomic_inc_unchecked(&vcc->stats->rx);
 				}
 
 				push_rxbufs(card, skb);
@@ -2205,7 +2205,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 
 				if (!atm_charge(vcc, skb->truesize)) {
 					push_rxbufs(card, skb);
-					atomic_inc(&vcc->stats->rx_drop);
+					atomic_inc_unchecked(&vcc->stats->rx_drop);
 				} else {
 					dequeue_lg_buf(card, skb);
 #ifdef NS_USE_DESTRUCTORS
@@ -2218,7 +2218,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 					ATM_SKB(skb)->vcc = vcc;
 					__net_timestamp(skb);
 					vcc->push(vcc, skb);
-					atomic_inc(&vcc->stats->rx);
+					atomic_inc_unchecked(&vcc->stats->rx);
 				}
 
 				push_rxbufs(card, sb);
@@ -2239,7 +2239,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 					printk
 					    ("nicstar%d: Out of huge buffers.\n",
 					     card->index);
-					atomic_inc(&vcc->stats->rx_drop);
+					atomic_inc_unchecked(&vcc->stats->rx_drop);
 					recycle_iovec_rx_bufs(card,
 							      (struct iovec *)
 							      iovb->data,
@@ -2290,7 +2290,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 					card->hbpool.count++;
 				} else
 					dev_kfree_skb_any(hb);
-				atomic_inc(&vcc->stats->rx_drop);
+				atomic_inc_unchecked(&vcc->stats->rx_drop);
 			} else {
 				/* Copy the small buffer to the huge buffer */
 				sb = (struct sk_buff *)iov->iov_base;
@@ -2327,7 +2327,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
 #endif /* NS_USE_DESTRUCTORS */
 				__net_timestamp(hb);
 				vcc->push(vcc, hb);
-				atomic_inc(&vcc->stats->rx);
+				atomic_inc_unchecked(&vcc->stats->rx);
 			}
 		}
 
diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
index 943cf0d..37d15d5 100644
--- a/drivers/atm/solos-pci.c
+++ b/drivers/atm/solos-pci.c
@@ -838,7 +838,7 @@ static void solos_bh(unsigned long card_arg)
 				}
 				atm_charge(vcc, skb->truesize);
 				vcc->push(vcc, skb);
-				atomic_inc(&vcc->stats->rx);
+				atomic_inc_unchecked(&vcc->stats->rx);
 				break;
 
 			case PKT_STATUS:
@@ -1116,7 +1116,7 @@ static uint32_t fpga_tx(struct solos_card *card)
 			vcc = SKB_CB(oldskb)->vcc;
 
 			if (vcc) {
-				atomic_inc(&vcc->stats->tx);
+				atomic_inc_unchecked(&vcc->stats->tx);
 				solos_pop(vcc, oldskb);
 			} else {
 				dev_kfree_skb_irq(oldskb);
diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c
index 0215934..ce9f5b1 100644
--- a/drivers/atm/suni.c
+++ b/drivers/atm/suni.c
@@ -49,8 +49,8 @@ static DEFINE_SPINLOCK(sunis_lock);
 
 
 #define ADD_LIMITED(s,v) \
-    atomic_add((v),&stats->s); \
-    if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX);
+    atomic_add_unchecked((v),&stats->s); \
+    if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX);
 
 
 static void suni_hz(unsigned long from_timer)
diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c
index 5120a96..e2572bd 100644
--- a/drivers/atm/uPD98402.c
+++ b/drivers/atm/uPD98402.c
@@ -42,7 +42,7 @@ static int fetch_stats(struct atm_dev *dev,struct sonet_stats __user *arg,int ze
 	struct sonet_stats tmp;
  	int error = 0;
 
-	atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
+	atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
 	sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp);
 	if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp));
 	if (zero && !error) {
@@ -161,9 +161,9 @@ static int uPD98402_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
 
 
 #define ADD_LIMITED(s,v) \
-    { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \
-    if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \
-	atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); }
+    { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \
+    if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); }
 
 
 static void stat_event(struct atm_dev *dev)
@@ -194,7 +194,7 @@ static void uPD98402_int(struct atm_dev *dev)
 		if (reason & uPD98402_INT_PFM) stat_event(dev);
 		if (reason & uPD98402_INT_PCO) {
 			(void) GET(PCOCR); /* clear interrupt cause */
-			atomic_add(GET(HECCT),
+			atomic_add_unchecked(GET(HECCT),
 			    &PRIV(dev)->sonet_stats.uncorr_hcs);
 		}
 		if ((reason & uPD98402_INT_RFO) && 
@@ -222,9 +222,9 @@ static int uPD98402_start(struct atm_dev *dev)
 	PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO |
 	  uPD98402_INT_LOS),PIMR); /* enable them */
 	(void) fetch_stats(dev,NULL,1); /* clear kernel counters */
-	atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1);
-	atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1);
-	atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1);
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1);
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1);
+	atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1);
 	return 0;
 }
 
diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
index 969c3c2..9b72956 100644
--- a/drivers/atm/zatm.c
+++ b/drivers/atm/zatm.c
@@ -459,7 +459,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
 		}
 		if (!size) {
 			dev_kfree_skb_irq(skb);
-			if (vcc) atomic_inc(&vcc->stats->rx_err);
+			if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err);
 			continue;
 		}
 		if (!atm_charge(vcc,skb->truesize)) {
@@ -469,7 +469,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
 		skb->len = size;
 		ATM_SKB(skb)->vcc = vcc;
 		vcc->push(vcc,skb);
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 	}
 	zout(pos & 0xffff,MTA(mbx));
 #if 0 /* probably a stupid idea */
@@ -733,7 +733,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP |
 			skb_queue_head(&zatm_vcc->backlog,skb);
 			break;
 		}
-	atomic_inc(&vcc->stats->tx);
+	atomic_inc_unchecked(&vcc->stats->tx);
 	wake_up(&zatm_vcc->tx_wait);
 }
 
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 83e910a..b224a73 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -1124,7 +1124,7 @@ int subsys_interface_register(struct subsys_interface *sif)
 		return -EINVAL;
 
 	mutex_lock(&subsys->p->mutex);
-	list_add_tail(&sif->node, &subsys->p->interfaces);
+	pax_list_add_tail((struct list_head *)&sif->node, &subsys->p->interfaces);
 	if (sif->add_dev) {
 		subsys_dev_iter_init(&iter, subsys, NULL, NULL);
 		while ((dev = subsys_dev_iter_next(&iter)))
@@ -1149,7 +1149,7 @@ void subsys_interface_unregister(struct subsys_interface *sif)
 	subsys = sif->subsys;
 
 	mutex_lock(&subsys->p->mutex);
-	list_del_init(&sif->node);
+	pax_list_del_init((struct list_head *)&sif->node);
 	if (sif->remove_dev) {
 		subsys_dev_iter_init(&iter, subsys, NULL, NULL);
 		while ((dev = subsys_dev_iter_next(&iter)))
diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 25798db..15f130e 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -354,7 +354,7 @@ int devtmpfs_mount(const char *mntdir)
 	if (!thread)
 		return 0;
 
-	err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL);
+	err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)mntdir, (char __force_user *)"devtmpfs", MS_SILENT, NULL);
 	if (err)
 		printk(KERN_INFO "devtmpfs: error mounting %i\n", err);
 	else
@@ -380,11 +380,11 @@ static int devtmpfsd(void *p)
 	*err = sys_unshare(CLONE_NEWNS);
 	if (*err)
 		goto out;
-	*err = sys_mount("devtmpfs", "/", "devtmpfs", MS_SILENT, options);
+	*err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)"/", (char __force_user *)"devtmpfs", MS_SILENT, (char __force_user *)options);
 	if (*err)
 		goto out;
-	sys_chdir("/.."); /* will traverse into overmounted root */
-	sys_chroot(".");
+	sys_chdir((char __force_user *)"/.."); /* will traverse into overmounted root */
+	sys_chroot((char __force_user *)".");
 	complete(&setup_done);
 	while (1) {
 		spin_lock(&req_lock);
diff --git a/drivers/base/node.c b/drivers/base/node.c
index 8f7ed99..700dd0c 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -624,7 +624,7 @@ static ssize_t print_nodes_state(enum node_states state, char *buf)
 struct node_attr {
 	struct device_attribute attr;
 	enum node_states state;
-};
+} __do_const;
 
 static ssize_t show_node_state(struct device *dev,
 			       struct device_attribute *attr, char *buf)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index eee55c1..b8c9393 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1821,9 +1821,9 @@ int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
 
 	if (dev->power.subsys_data->domain_data) {
 		gpd_data = to_gpd_data(dev->power.subsys_data->domain_data);
-		gpd_data->ops = (struct gpd_dev_ops){ NULL };
+		memset(&gpd_data->ops, 0, sizeof(gpd_data->ops));
 		if (clear_td)
-			gpd_data->td = (struct gpd_timing_data){ 0 };
+			memset(&gpd_data->td, 0, sizeof(gpd_data->td));
 
 		if (--gpd_data->refcount == 0) {
 			dev->power.subsys_data->domain_data = NULL;
@@ -1862,7 +1862,7 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
 {
 	struct cpuidle_driver *cpuidle_drv;
 	struct gpd_cpu_data *cpu_data;
-	struct cpuidle_state *idle_state;
+	cpuidle_state_no_const *idle_state;
 	int ret = 0;
 
 	if (IS_ERR_OR_NULL(genpd) || state < 0)
@@ -1930,7 +1930,7 @@ int pm_genpd_name_attach_cpuidle(const char *name, int state)
 int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
 {
 	struct gpd_cpu_data *cpu_data;
-	struct cpuidle_state *idle_state;
+	cpuidle_state_no_const *idle_state;
 	int ret = 0;
 
 	if (IS_ERR_OR_NULL(genpd))
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
index 95b181d1..c4f0e19 100644
--- a/drivers/base/power/sysfs.c
+++ b/drivers/base/power/sysfs.c
@@ -185,7 +185,7 @@ static ssize_t rtpm_status_show(struct device *dev,
 			return -EIO;
 		}
 	}
-	return sprintf(buf, p);
+	return sprintf(buf, "%s", p);
 }
 
 static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index eb1bd2e..2667d3a 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -29,14 +29,14 @@ bool events_check_enabled __read_mostly;
  * They need to be modified together atomically, so it's better to use one
  * atomic variable to hold them both.
  */
-static atomic_t combined_event_count = ATOMIC_INIT(0);
+static atomic_unchecked_t combined_event_count = ATOMIC_INIT(0);
 
 #define IN_PROGRESS_BITS	(sizeof(int) * 4)
 #define MAX_IN_PROGRESS		((1 << IN_PROGRESS_BITS) - 1)
 
 static void split_counters(unsigned int *cnt, unsigned int *inpr)
 {
-	unsigned int comb = atomic_read(&combined_event_count);
+	unsigned int comb = atomic_read_unchecked(&combined_event_count);
 
 	*cnt = (comb >> IN_PROGRESS_BITS);
 	*inpr = comb & MAX_IN_PROGRESS;
@@ -401,7 +401,7 @@ static void wakeup_source_activate(struct wakeup_source *ws)
 		ws->start_prevent_time = ws->last_time;
 
 	/* Increment the counter of events in progress. */
-	cec = atomic_inc_return(&combined_event_count);
+	cec = atomic_inc_return_unchecked(&combined_event_count);
 
 	trace_wakeup_source_activate(ws->name, cec);
 }
@@ -527,7 +527,7 @@ static void wakeup_source_deactivate(struct wakeup_source *ws)
 	 * Increment the counter of registered wakeup events and decrement the
 	 * couter of wakeup events in progress simultaneously.
 	 */
-	cec = atomic_add_return(MAX_IN_PROGRESS, &combined_event_count);
+	cec = atomic_add_return_unchecked(MAX_IN_PROGRESS, &combined_event_count);
 	trace_wakeup_source_deactivate(ws->name, cec);
 
 	split_counters(&cnt, &inpr);
diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
index dbb8350..4762f4c 100644
--- a/drivers/base/syscore.c
+++ b/drivers/base/syscore.c
@@ -22,7 +22,7 @@ static DEFINE_MUTEX(syscore_ops_lock);
 void register_syscore_ops(struct syscore_ops *ops)
 {
 	mutex_lock(&syscore_ops_lock);
-	list_add_tail(&ops->node, &syscore_ops_list);
+	pax_list_add_tail((struct list_head *)&ops->node, &syscore_ops_list);
 	mutex_unlock(&syscore_ops_lock);
 }
 EXPORT_SYMBOL_GPL(register_syscore_ops);
@@ -34,7 +34,7 @@ EXPORT_SYMBOL_GPL(register_syscore_ops);
 void unregister_syscore_ops(struct syscore_ops *ops)
 {
 	mutex_lock(&syscore_ops_lock);
-	list_del(&ops->node);
+	pax_list_del((struct list_head *)&ops->node);
 	mutex_unlock(&syscore_ops_lock);
 }
 EXPORT_SYMBOL_GPL(unregister_syscore_ops);
diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
index 4595c22..d4f6c54 100644
--- a/drivers/block/cciss.c
+++ b/drivers/block/cciss.c
@@ -3011,7 +3011,7 @@ static void start_io(ctlr_info_t *h)
 	while (!list_empty(&h->reqQ)) {
 		c = list_entry(h->reqQ.next, CommandList_struct, list);
 		/* can't do anything if fifo is full */
-		if ((h->access.fifo_full(h))) {
+		if ((h->access->fifo_full(h))) {
 			dev_warn(&h->pdev->dev, "fifo full\n");
 			break;
 		}
@@ -3021,7 +3021,7 @@ static void start_io(ctlr_info_t *h)
 		h->Qdepth--;
 
 		/* Tell the controller execute command */
-		h->access.submit_command(h, c);
+		h->access->submit_command(h, c);
 
 		/* Put job onto the completed Q */
 		addQ(&h->cmpQ, c);
@@ -3447,17 +3447,17 @@ startio:
 
 static inline unsigned long get_next_completion(ctlr_info_t *h)
 {
-	return h->access.command_completed(h);
+	return h->access->command_completed(h);
 }
 
 static inline int interrupt_pending(ctlr_info_t *h)
 {
-	return h->access.intr_pending(h);
+	return h->access->intr_pending(h);
 }
 
 static inline long interrupt_not_for_us(ctlr_info_t *h)
 {
-	return ((h->access.intr_pending(h) == 0) ||
+	return ((h->access->intr_pending(h) == 0) ||
 		(h->interrupts_enabled == 0));
 }
 
@@ -3490,7 +3490,7 @@ static inline u32 next_command(ctlr_info_t *h)
 	u32 a;
 
 	if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
-		return h->access.command_completed(h);
+		return h->access->command_completed(h);
 
 	if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
 		a = *(h->reply_pool_head); /* Next cmd in ring buffer */
@@ -4047,7 +4047,7 @@ static void cciss_put_controller_into_performant_mode(ctlr_info_t *h)
 		trans_support & CFGTBL_Trans_use_short_tags);
 
 	/* Change the access methods to the performant access methods */
-	h->access = SA5_performant_access;
+	h->access = &SA5_performant_access;
 	h->transMethod = CFGTBL_Trans_Performant;
 
 	return;
@@ -4321,7 +4321,7 @@ static int cciss_pci_init(ctlr_info_t *h)
 	if (prod_index < 0)
 		return -ENODEV;
 	h->product_name = products[prod_index].product_name;
-	h->access = *(products[prod_index].access);
+	h->access = products[prod_index].access;
 
 	if (cciss_board_disabled(h)) {
 		dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
@@ -5053,7 +5053,7 @@ reinit_after_soft_reset:
 	}
 
 	/* make sure the board interrupts are off */
-	h->access.set_intr_mask(h, CCISS_INTR_OFF);
+	h->access->set_intr_mask(h, CCISS_INTR_OFF);
 	rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx);
 	if (rc)
 		goto clean2;
@@ -5103,7 +5103,7 @@ reinit_after_soft_reset:
 		 * fake ones to scoop up any residual completions.
 		 */
 		spin_lock_irqsave(&h->lock, flags);
-		h->access.set_intr_mask(h, CCISS_INTR_OFF);
+		h->access->set_intr_mask(h, CCISS_INTR_OFF);
 		spin_unlock_irqrestore(&h->lock, flags);
 		free_irq(h->intr[h->intr_mode], h);
 		rc = cciss_request_irq(h, cciss_msix_discard_completions,
@@ -5123,9 +5123,9 @@ reinit_after_soft_reset:
 		dev_info(&h->pdev->dev, "Board READY.\n");
 		dev_info(&h->pdev->dev,
 			"Waiting for stale completions to drain.\n");
-		h->access.set_intr_mask(h, CCISS_INTR_ON);
+		h->access->set_intr_mask(h, CCISS_INTR_ON);
 		msleep(10000);
-		h->access.set_intr_mask(h, CCISS_INTR_OFF);
+		h->access->set_intr_mask(h, CCISS_INTR_OFF);
 
 		rc = controller_reset_failed(h->cfgtable);
 		if (rc)
@@ -5148,7 +5148,7 @@ reinit_after_soft_reset:
 	cciss_scsi_setup(h);
 
 	/* Turn the interrupts on so we can service requests */
-	h->access.set_intr_mask(h, CCISS_INTR_ON);
+	h->access->set_intr_mask(h, CCISS_INTR_ON);
 
 	/* Get the firmware version */
 	inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
@@ -5220,7 +5220,7 @@ static void cciss_shutdown(struct pci_dev *pdev)
 	kfree(flush_buf);
 	if (return_code != IO_OK)
 		dev_warn(&h->pdev->dev, "Error flushing cache\n");
-	h->access.set_intr_mask(h, CCISS_INTR_OFF);
+	h->access->set_intr_mask(h, CCISS_INTR_OFF);
 	free_irq(h->intr[h->intr_mode], h);
 }
 
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index 7fda30e..2f27946 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -101,7 +101,7 @@ struct ctlr_info
 	/* information about each logical volume */
 	drive_info_struct *drv[CISS_MAX_LUN];
 
-	struct access_method access;
+	struct access_method *access;
 
 	/* queue and queue Info */ 
 	struct list_head reqQ;
@@ -402,27 +402,27 @@ static bool SA5_performant_intr_pending(ctlr_info_t *h)
 }
 
 static struct access_method SA5_access = {
-	SA5_submit_command,
-	SA5_intr_mask,
-	SA5_fifo_full,
-	SA5_intr_pending,
-	SA5_completed,
+	.submit_command = SA5_submit_command,
+	.set_intr_mask = SA5_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_intr_pending,
+	.command_completed = SA5_completed,
 };
 
 static struct access_method SA5B_access = {
-        SA5_submit_command,
-        SA5B_intr_mask,
-        SA5_fifo_full,
-        SA5B_intr_pending,
-        SA5_completed,
+	.submit_command = SA5_submit_command,
+	.set_intr_mask = SA5B_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5B_intr_pending,
+	.command_completed = SA5_completed,
 };
 
 static struct access_method SA5_performant_access = {
-	SA5_submit_command,
-	SA5_performant_intr_mask,
-	SA5_fifo_full,
-	SA5_performant_intr_pending,
-	SA5_performant_completed,
+	.submit_command = SA5_submit_command,
+	.set_intr_mask = SA5_performant_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_performant_intr_pending,
+	.command_completed = SA5_performant_completed,
 };
 
 struct board_type {
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index 2b94403..fd6ad1f 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -404,7 +404,7 @@ static int cpqarray_register_ctlr(int i, struct pci_dev *pdev)
 	if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) {
 		goto Enomem4;
 	}
-	hba[i]->access.set_intr_mask(hba[i], 0);
+	hba[i]->access->set_intr_mask(hba[i], 0);
 	if (request_irq(hba[i]->intr, do_ida_intr,
 		IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i]))
 	{
@@ -459,7 +459,7 @@ static int cpqarray_register_ctlr(int i, struct pci_dev *pdev)
 	add_timer(&hba[i]->timer);
 
 	/* Enable IRQ now that spinlock and rate limit timer are set up */
-	hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY);
+	hba[i]->access->set_intr_mask(hba[i], FIFO_NOT_EMPTY);
 
 	for(j=0; j<NWD; j++) {
 		struct gendisk *disk = ida_gendisk[i][j];
@@ -694,7 +694,7 @@ DBGINFO(
 	for(i=0; i<NR_PRODUCTS; i++) {
 		if (board_id == products[i].board_id) {
 			c->product_name = products[i].product_name;
-			c->access = *(products[i].access);
+			c->access = products[i].access;
 			break;
 		}
 	}
@@ -792,7 +792,7 @@ static int cpqarray_eisa_detect(void)
 		hba[ctlr]->intr = intr;
 		sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr);
 		hba[ctlr]->product_name = products[j].product_name;
-		hba[ctlr]->access = *(products[j].access);
+		hba[ctlr]->access = products[j].access;
 		hba[ctlr]->ctlr = ctlr;
 		hba[ctlr]->board_id = board_id;
 		hba[ctlr]->pci_dev = NULL; /* not PCI */
@@ -978,7 +978,7 @@ static void start_io(ctlr_info_t *h)
 
 	while((c = h->reqQ) != NULL) {
 		/* Can't do anything if we're busy */
-		if (h->access.fifo_full(h) == 0)
+		if (h->access->fifo_full(h) == 0)
 			return;
 
 		/* Get the first entry from the request Q */
@@ -986,7 +986,7 @@ static void start_io(ctlr_info_t *h)
 		h->Qdepth--;
 	
 		/* Tell the controller to do our bidding */
-		h->access.submit_command(h, c);
+		h->access->submit_command(h, c);
 
 		/* Get onto the completion Q */
 		addQ(&h->cmpQ, c);
@@ -1048,7 +1048,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id)
 	unsigned long flags;
 	__u32 a,a1;
 
-	istat = h->access.intr_pending(h);
+	istat = h->access->intr_pending(h);
 	/* Is this interrupt for us? */
 	if (istat == 0)
 		return IRQ_NONE;
@@ -1059,7 +1059,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id)
 	 */
 	spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
 	if (istat & FIFO_NOT_EMPTY) {
-		while((a = h->access.command_completed(h))) {
+		while((a = h->access->command_completed(h))) {
 			a1 = a; a &= ~3;
 			if ((c = h->cmpQ) == NULL)
 			{  
@@ -1448,11 +1448,11 @@ static int sendcmd(
 	/*
 	 * Disable interrupt
 	 */
-	info_p->access.set_intr_mask(info_p, 0);
+	info_p->access->set_intr_mask(info_p, 0);
 	/* Make sure there is room in the command FIFO */
 	/* Actually it should be completely empty at this time. */
 	for (i = 200000; i > 0; i--) {
-		temp = info_p->access.fifo_full(info_p);
+		temp = info_p->access->fifo_full(info_p);
 		if (temp != 0) {
 			break;
 		}
@@ -1465,7 +1465,7 @@ DBG(
 	/*
 	 * Send the cmd
 	 */
-	info_p->access.submit_command(info_p, c);
+	info_p->access->submit_command(info_p, c);
 	complete = pollcomplete(ctlr);
 	
 	pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr, 
@@ -1548,9 +1548,9 @@ static int revalidate_allvol(ctlr_info_t *host)
 	 * we check the new geometry.  Then turn interrupts back on when
 	 * we're done.
 	 */
-	host->access.set_intr_mask(host, 0);
+	host->access->set_intr_mask(host, 0);
 	getgeometry(ctlr);
-	host->access.set_intr_mask(host, FIFO_NOT_EMPTY);
+	host->access->set_intr_mask(host, FIFO_NOT_EMPTY);
 
 	for(i=0; i<NWD; i++) {
 		struct gendisk *disk = ida_gendisk[ctlr][i];
@@ -1590,7 +1590,7 @@ static int pollcomplete(int ctlr)
 	/* Wait (up to 2 seconds) for a command to complete */
 
 	for (i = 200000; i > 0; i--) {
-		done = hba[ctlr]->access.command_completed(hba[ctlr]);
+		done = hba[ctlr]->access->command_completed(hba[ctlr]);
 		if (done == 0) {
 			udelay(10);	/* a short fixed delay */
 		} else
diff --git a/drivers/block/cpqarray.h b/drivers/block/cpqarray.h
index be73e9d..7fbf140 100644
--- a/drivers/block/cpqarray.h
+++ b/drivers/block/cpqarray.h
@@ -99,7 +99,7 @@ struct ctlr_info {
 	drv_info_t	drv[NWD];
 	struct proc_dir_entry *proc;
 
-	struct access_method access;
+	struct access_method *access;
 
 	cmdlist_t *reqQ;
 	cmdlist_t *cmpQ;
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index a76ceb3..3c1a9fd 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -331,7 +331,7 @@ struct drbd_epoch {
 	struct drbd_connection *connection;
 	struct list_head list;
 	unsigned int barrier_nr;
-	atomic_t epoch_size; /* increased on every request added. */
+	atomic_unchecked_t epoch_size; /* increased on every request added. */
 	atomic_t active;     /* increased on every req. added, and dec on every finished. */
 	unsigned long flags;
 };
@@ -797,7 +797,7 @@ struct drbd_device {
 	unsigned int al_tr_number;
 	int al_tr_cycle;
 	wait_queue_head_t seq_wait;
-	atomic_t packet_seq;
+	atomic_unchecked_t packet_seq;
 	unsigned int peer_seq;
 	spinlock_t peer_seq_lock;
 	unsigned int minor;
@@ -1407,7 +1407,7 @@ static inline int drbd_setsockopt(struct socket *sock, int level, int optname,
 	char __user *uoptval;
 	int err;
 
-	uoptval = (char __user __force *)optval;
+	uoptval = (char __force_user *)optval;
 
 	set_fs(KERNEL_DS);
 	if (level == SOL_SOCKET)
diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c
index 89c497c..9c736ae 100644
--- a/drivers/block/drbd/drbd_interval.c
+++ b/drivers/block/drbd/drbd_interval.c
@@ -67,9 +67,9 @@ static void augment_rotate(struct rb_node *rb_old, struct rb_node *rb_new)
 }
 
 static const struct rb_augment_callbacks augment_callbacks = {
-	augment_propagate,
-	augment_copy,
-	augment_rotate,
+	.propagate = augment_propagate,
+	.copy = augment_copy,
+	.rotate = augment_rotate,
 };
 
 /**
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 960645c..6c2724a 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -1322,7 +1322,7 @@ static int _drbd_send_ack(struct drbd_peer_device *peer_device, enum drbd_packet
 	p->sector = sector;
 	p->block_id = block_id;
 	p->blksize = blksize;
-	p->seq_num = cpu_to_be32(atomic_inc_return(&peer_device->device->packet_seq));
+	p->seq_num = cpu_to_be32(atomic_inc_return_unchecked(&peer_device->device->packet_seq));
 	return drbd_send_command(peer_device, sock, cmd, sizeof(*p), NULL, 0);
 }
 
@@ -1628,7 +1628,7 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *
 		return -EIO;
 	p->sector = cpu_to_be64(req->i.sector);
 	p->block_id = (unsigned long)req;
-	p->seq_num = cpu_to_be32(atomic_inc_return(&device->packet_seq));
+	p->seq_num = cpu_to_be32(atomic_inc_return_unchecked(&device->packet_seq));
 	dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio->bi_rw);
 	if (device->state.conn >= C_SYNC_SOURCE &&
 	    device->state.conn <= C_PAUSED_SYNC_T)
@@ -2670,8 +2670,8 @@ void drbd_destroy_connection(struct kref *kref)
 	struct drbd_connection *connection = container_of(kref, struct drbd_connection, kref);
 	struct drbd_resource *resource = connection->resource;
 
-	if (atomic_read(&connection->current_epoch->epoch_size) !=  0)
-		drbd_err(connection, "epoch_size:%d\n", atomic_read(&connection->current_epoch->epoch_size));
+	if (atomic_read_unchecked(&connection->current_epoch->epoch_size) !=  0)
+		drbd_err(connection, "epoch_size:%d\n", atomic_read_unchecked(&connection->current_epoch->epoch_size));
 	kfree(connection->current_epoch);
 
 	idr_destroy(&connection->peer_devices);
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 3f2e167..d3170e4 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -3616,7 +3616,7 @@ finish:
 
 void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib)
 {
-	static atomic_t drbd_genl_seq = ATOMIC_INIT(2); /* two. */
+	static atomic_unchecked_t drbd_genl_seq = ATOMIC_INIT(2); /* two. */
 	struct sk_buff *msg;
 	struct drbd_genlmsghdr *d_out;
 	unsigned seq;
@@ -3629,7 +3629,7 @@ void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib)
 			return;
 	}
 
-	seq = atomic_inc_return(&drbd_genl_seq);
+	seq = atomic_inc_return_unchecked(&drbd_genl_seq);
 	msg = genlmsg_new(NLMSG_GOODSIZE, GFP_NOIO);
 	if (!msg)
 		goto failed;
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 5b17ec8..6c21e6b 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -834,7 +834,7 @@ int drbd_connected(struct drbd_peer_device *peer_device)
 	struct drbd_device *device = peer_device->device;
 	int err;
 
-	atomic_set(&device->packet_seq, 0);
+	atomic_set_unchecked(&device->packet_seq, 0);
 	device->peer_seq = 0;
 
 	device->state_mutex = peer_device->connection->agreed_pro_version < 100 ?
@@ -1199,7 +1199,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_connection *connectio
 	do {
 		next_epoch = NULL;
 
-		epoch_size = atomic_read(&epoch->epoch_size);
+		epoch_size = atomic_read_unchecked(&epoch->epoch_size);
 
 		switch (ev & ~EV_CLEANUP) {
 		case EV_PUT:
@@ -1239,7 +1239,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_connection *connectio
 					rv = FE_DESTROYED;
 			} else {
 				epoch->flags = 0;
-				atomic_set(&epoch->epoch_size, 0);
+				atomic_set_unchecked(&epoch->epoch_size, 0);
 				/* atomic_set(&epoch->active, 0); is already zero */
 				if (rv == FE_STILL_LIVE)
 					rv = FE_RECYCLED;
@@ -1490,7 +1490,7 @@ static int receive_Barrier(struct drbd_connection *connection, struct packet_inf
 		conn_wait_active_ee_empty(connection);
 		drbd_flush(connection);
 
-		if (atomic_read(&connection->current_epoch->epoch_size)) {
+		if (atomic_read_unchecked(&connection->current_epoch->epoch_size)) {
 			epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO);
 			if (epoch)
 				break;
@@ -1503,11 +1503,11 @@ static int receive_Barrier(struct drbd_connection *connection, struct packet_inf
 	}
 
 	epoch->flags = 0;
-	atomic_set(&epoch->epoch_size, 0);
+	atomic_set_unchecked(&epoch->epoch_size, 0);
 	atomic_set(&epoch->active, 0);
 
 	spin_lock(&connection->epoch_lock);
-	if (atomic_read(&connection->current_epoch->epoch_size)) {
+	if (atomic_read_unchecked(&connection->current_epoch->epoch_size)) {
 		list_add(&epoch->list, &connection->current_epoch->list);
 		connection->current_epoch = epoch;
 		connection->epochs++;
@@ -2224,7 +2224,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
 
 		err = wait_for_and_update_peer_seq(peer_device, peer_seq);
 		drbd_send_ack_dp(peer_device, P_NEG_ACK, p, pi->size);
-		atomic_inc(&connection->current_epoch->epoch_size);
+		atomic_inc_unchecked(&connection->current_epoch->epoch_size);
 		err2 = drbd_drain_block(peer_device, pi->size);
 		if (!err)
 			err = err2;
@@ -2266,7 +2266,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
 
 	spin_lock(&connection->epoch_lock);
 	peer_req->epoch = connection->current_epoch;
-	atomic_inc(&peer_req->epoch->epoch_size);
+	atomic_inc_unchecked(&peer_req->epoch->epoch_size);
 	atomic_inc(&peer_req->epoch->active);
 	spin_unlock(&connection->epoch_lock);
 
@@ -4461,7 +4461,7 @@ struct data_cmd {
 	int expect_payload;
 	size_t pkt_size;
 	int (*fn)(struct drbd_connection *, struct packet_info *);
-};
+} __do_const;
 
 static struct data_cmd drbd_cmd_handler[] = {
 	[P_DATA]	    = { 1, sizeof(struct p_data), receive_Data },
@@ -4572,7 +4572,7 @@ static void conn_disconnect(struct drbd_connection *connection)
 	if (!list_empty(&connection->current_epoch->list))
 		drbd_err(connection, "ASSERTION FAILED: connection->current_epoch->list not empty\n");
 	/* ok, no more ee's on the fly, it is safe to reset the epoch_size */
-	atomic_set(&connection->current_epoch->epoch_size, 0);
+	atomic_set_unchecked(&connection->current_epoch->epoch_size, 0);
 	connection->send.seen_any_write_yet = false;
 
 	drbd_info(connection, "Connection closed\n");
@@ -5364,7 +5364,7 @@ static int connection_finish_peer_reqs(struct drbd_connection *connection)
 struct asender_cmd {
 	size_t pkt_size;
 	int (*fn)(struct drbd_connection *connection, struct packet_info *);
-};
+} __do_const;
 
 static struct asender_cmd asender_tbl[] = {
 	[P_PING]	    = { 0, got_Ping },
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 6cb1beb..bf490f7 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -232,7 +232,7 @@ static int __do_lo_send_write(struct file *file,
 
 	file_start_write(file);
 	set_fs(get_ds());
-	bw = file->f_op->write(file, buf, len, &pos);
+	bw = file->f_op->write(file, (const char __force_user *)buf, len, &pos);
 	set_fs(old_fs);
 	file_end_write(file);
 	if (likely(bw == len))
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index 02351e2..a9ea617 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -73,7 +73,6 @@ static LIST_HEAD(dev_list);
 static struct task_struct *nvme_thread;
 static struct workqueue_struct *nvme_workq;
 static wait_queue_head_t nvme_kthread_wait;
-static struct notifier_block nvme_nb;
 
 static void nvme_reset_failed_dev(struct work_struct *ws);
 
@@ -2925,6 +2924,10 @@ static struct pci_driver nvme_driver = {
 	.err_handler	= &nvme_err_handler,
 };
 
+static struct notifier_block nvme_nb = {
+	.notifier_call = &nvme_cpu_notify,
+};
+
 static int __init nvme_init(void)
 {
 	int result;
@@ -2941,7 +2944,6 @@ static int __init nvme_init(void)
 	else if (result > 0)
 		nvme_major = result;
 
-	nvme_nb.notifier_call = &nvme_cpu_notify;
 	result = register_hotcpu_notifier(&nvme_nb);
 	if (result)
 		goto unregister_blkdev;
diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
index 758ac44..58087fd 100644
--- a/drivers/block/pktcdvd.c
+++ b/drivers/block/pktcdvd.c
@@ -108,7 +108,7 @@ static int pkt_seq_show(struct seq_file *m, void *p);
 
 static sector_t get_zone(sector_t sector, struct pktcdvd_device *pd)
 {
-	return (sector + pd->offset) & ~(sector_t)(pd->settings.size - 1);
+	return (sector + pd->offset) & ~(sector_t)(pd->settings.size - 1UL);
 }
 
 /*
@@ -1888,7 +1888,7 @@ static noinline_for_stack int pkt_probe_settings(struct pktcdvd_device *pd)
 		return -EROFS;
 	}
 	pd->settings.fp = ti.fp;
-	pd->offset = (be32_to_cpu(ti.track_start) << 2) & (pd->settings.size - 1);
+	pd->offset = (be32_to_cpu(ti.track_start) << 2) & (pd->settings.size - 1UL);
 
 	if (ti.nwa_v) {
 		pd->nwa = be32_to_cpu(ti.next_writable);
diff --git a/drivers/block/smart1,2.h b/drivers/block/smart1,2.h
index e5565fb..71be10b4 100644
--- a/drivers/block/smart1,2.h
+++ b/drivers/block/smart1,2.h
@@ -108,11 +108,11 @@ static unsigned long smart4_intr_pending(ctlr_info_t *h)
 }
 
 static struct access_method smart4_access = {
-	smart4_submit_command,
-	smart4_intr_mask,
-	smart4_fifo_full,
-	smart4_intr_pending,
-	smart4_completed,
+	.submit_command = smart4_submit_command,
+	.set_intr_mask = smart4_intr_mask,
+	.fifo_full = smart4_fifo_full,
+	.intr_pending = smart4_intr_pending,
+	.command_completed = smart4_completed,
 };
 
 /*
@@ -144,11 +144,11 @@ static unsigned long smart2_intr_pending(ctlr_info_t *h)
 }
 
 static struct access_method smart2_access = {
-	smart2_submit_command,
-	smart2_intr_mask,
-	smart2_fifo_full,
-	smart2_intr_pending,
-	smart2_completed,
+	.submit_command = smart2_submit_command,
+	.set_intr_mask = smart2_intr_mask,
+	.fifo_full = smart2_fifo_full,
+	.intr_pending = smart2_intr_pending,
+	.command_completed = smart2_completed,
 };
 
 /*
@@ -180,11 +180,11 @@ static unsigned long smart2e_intr_pending(ctlr_info_t *h)
 }
 
 static struct access_method smart2e_access = {
-	smart2e_submit_command,
-	smart2e_intr_mask,
-	smart2e_fifo_full,
-	smart2e_intr_pending,
-	smart2e_completed,
+	.submit_command = smart2e_submit_command,
+	.set_intr_mask = smart2e_intr_mask,
+	.fifo_full = smart2e_fifo_full,
+	.intr_pending = smart2e_intr_pending,
+	.command_completed = smart2e_completed,
 };
 
 /*
@@ -270,9 +270,9 @@ static unsigned long smart1_intr_pending(ctlr_info_t *h)
 }
 
 static struct access_method smart1_access = {
-	smart1_submit_command,
-	smart1_intr_mask,
-	smart1_fifo_full,
-	smart1_intr_pending,
-	smart1_completed,
+	.submit_command = smart1_submit_command,
+	.set_intr_mask = smart1_intr_mask,
+	.fifo_full = smart1_fifo_full,
+	.intr_pending = smart1_intr_pending,
+	.command_completed = smart1_completed,
 };
diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
index f038dba..bb74c08 100644
--- a/drivers/bluetooth/btwilink.c
+++ b/drivers/bluetooth/btwilink.c
@@ -288,7 +288,7 @@ static int ti_st_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
 
 static int bt_ti_probe(struct platform_device *pdev)
 {
-	static struct ti_st *hst;
+	struct ti_st *hst;
 	struct hci_dev *hdev;
 	int err;
 
diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
index 898b84b..86f74b9 100644
--- a/drivers/cdrom/cdrom.c
+++ b/drivers/cdrom/cdrom.c
@@ -610,7 +610,6 @@ int register_cdrom(struct cdrom_device_info *cdi)
 	ENSURE(reset, CDC_RESET);
 	ENSURE(generic_packet, CDC_GENERIC_PACKET);
 	cdi->mc_flags = 0;
-	cdo->n_minors = 0;
 	cdi->options = CDO_USE_FFLAGS;
 
 	if (autoclose == 1 && CDROM_CAN(CDC_CLOSE_TRAY))
@@ -630,8 +629,11 @@ int register_cdrom(struct cdrom_device_info *cdi)
 	else
 		cdi->cdda_method = CDDA_OLD;
 
-	if (!cdo->generic_packet)
-		cdo->generic_packet = cdrom_dummy_generic_packet;
+	if (!cdo->generic_packet) {
+		pax_open_kernel();
+		*(void **)&cdo->generic_packet = cdrom_dummy_generic_packet;
+		pax_close_kernel();
+	}
 
 	cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
 	mutex_lock(&cdrom_mutex);
@@ -652,7 +654,6 @@ void unregister_cdrom(struct cdrom_device_info *cdi)
 	if (cdi->exit)
 		cdi->exit(cdi);
 
-	cdi->ops->n_minors--;
 	cd_dbg(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
 }
 
@@ -2126,7 +2127,7 @@ static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
 	 */
 	nr = nframes;
 	do {
-		cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
+		cgc.buffer = kzalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
 		if (cgc.buffer)
 			break;
 
@@ -3434,7 +3435,7 @@ static int cdrom_print_info(const char *header, int val, char *info,
 	struct cdrom_device_info *cdi;
 	int ret;
 
-	ret = scnprintf(info + *pos, max_size - *pos, header);
+	ret = scnprintf(info + *pos, max_size - *pos, "%s", header);
 	if (!ret)
 		return 1;
 
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index 584bc31..e64a12c 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -491,7 +491,6 @@ static struct cdrom_device_ops gdrom_ops = {
 	.audio_ioctl		= gdrom_audio_ioctl,
 	.capability		= CDC_MULTI_SESSION | CDC_MEDIA_CHANGED |
 				  CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R,
-	.n_minors		= 1,
 };
 
 static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 6e9f74a..50c7cea 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -8,7 +8,8 @@ source "drivers/tty/Kconfig"
 
 config DEVKMEM
 	bool "/dev/kmem virtual device support"
-	default y
+	default n
+	depends on !GRKERNSEC_KMEM
 	help
 	  Say Y here if you want to support the /dev/kmem device. The
 	  /dev/kmem device is rarely used, but can be used for certain
@@ -577,6 +578,7 @@ config DEVPORT
 	bool
 	depends on !M68K
 	depends on ISA || PCI
+	depends on !GRKERNSEC_KMEM
 	default y
 
 source "drivers/s390/char/Kconfig"
diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
index a48e05b..6bac831 100644
--- a/drivers/char/agp/compat_ioctl.c
+++ b/drivers/char/agp/compat_ioctl.c
@@ -108,7 +108,7 @@ static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user
 			return -ENOMEM;
 		}
 
-		if (copy_from_user(usegment, (void __user *) ureserve.seg_list,
+		if (copy_from_user(usegment, (void __force_user *) ureserve.seg_list,
 				   sizeof(*usegment) * ureserve.seg_count)) {
 			kfree(usegment);
 			kfree(ksegment);
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index b297033..fa217ca 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -819,7 +819,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
 	if (copy_from_user(&reserve, arg, sizeof(struct agp_region)))
 		return -EFAULT;
 
-	if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment))
+	if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv))
 		return -EFAULT;
 
 	client = agp_find_client_by_pid(reserve.pid);
@@ -849,7 +849,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
 		if (segment == NULL)
 			return -ENOMEM;
 
-		if (copy_from_user(segment, (void __user *) reserve.seg_list,
+		if (copy_from_user(segment, (void __force_user *) reserve.seg_list,
 				   sizeof(struct agp_segment) * reserve.seg_count)) {
 			kfree(segment);
 			return -EFAULT;
diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
index 4f94375..413694e 100644
--- a/drivers/char/genrtc.c
+++ b/drivers/char/genrtc.c
@@ -273,6 +273,7 @@ static int gen_rtc_ioctl(struct file *file,
 	switch (cmd) {
 
 	case RTC_PLL_GET:
+	    memset(&pll, 0, sizeof(pll));
 	    if (get_rtc_pll(&pll))
 	 	    return -EINVAL;
 	    else
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index d5d4cd8..22d561d 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -575,7 +575,7 @@ static inline unsigned long hpet_time_div(struct hpets *hpets,
 }
 
 static int
-hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg,
+hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg,
 		  struct hpet_info *info)
 {
 	struct hpet_timer __iomem *timer;
diff --git a/drivers/char/hw_random/intel-rng.c b/drivers/char/hw_random/intel-rng.c
index 86fe45c..c0ea948 100644
--- a/drivers/char/hw_random/intel-rng.c
+++ b/drivers/char/hw_random/intel-rng.c
@@ -314,7 +314,7 @@ PFX "RNG, try using the 'no_fwh_detect' option.\n";
 
 		if (no_fwh_detect)
 			return -ENODEV;
-		printk(warning);
+		printk("%s", warning);
 		return -EBUSY;
 	}
 
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index e6db938..835e3a2 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -438,7 +438,7 @@ struct ipmi_smi {
 	struct proc_dir_entry *proc_dir;
 	char                  proc_dir_name[10];
 
-	atomic_t stats[IPMI_NUM_STATS];
+	atomic_unchecked_t stats[IPMI_NUM_STATS];
 
 	/*
 	 * run_to_completion duplicate of smb_info, smi_info
@@ -470,9 +470,9 @@ static LIST_HEAD(smi_watchers);
 static DEFINE_MUTEX(smi_watchers_mutex);
 
 #define ipmi_inc_stat(intf, stat) \
-	atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat])
+	atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])
 #define ipmi_get_stat(intf, stat) \
-	((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat]))
+	((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]))
 
 static int is_lan_addr(struct ipmi_addr *addr)
 {
@@ -2926,7 +2926,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
 	INIT_LIST_HEAD(&intf->cmd_rcvrs);
 	init_waitqueue_head(&intf->waitq);
 	for (i = 0; i < IPMI_NUM_STATS; i++)
-		atomic_set(&intf->stats[i], 0);
+		atomic_set_unchecked(&intf->stats[i], 0);
 
 	intf->proc_dir = NULL;
 
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 5d66568..c9d93c3 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -285,7 +285,7 @@ struct smi_info {
 	unsigned char slave_addr;
 
 	/* Counters and things for the proc filesystem. */
-	atomic_t stats[SI_NUM_STATS];
+	atomic_unchecked_t stats[SI_NUM_STATS];
 
 	struct task_struct *thread;
 
@@ -294,9 +294,9 @@ struct smi_info {
 };
 
 #define smi_inc_stat(smi, stat) \
-	atomic_inc(&(smi)->stats[SI_STAT_ ## stat])
+	atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat])
 #define smi_get_stat(smi, stat) \
-	((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat]))
+	((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat]))
 
 #define SI_MAX_PARMS 4
 
@@ -3374,7 +3374,7 @@ static int try_smi_init(struct smi_info *new_smi)
 	atomic_set(&new_smi->req_events, 0);
 	new_smi->run_to_completion = false;
 	for (i = 0; i < SI_NUM_STATS; i++)
-		atomic_set(&new_smi->stats[i], 0);
+		atomic_set_unchecked(&new_smi->stats[i], 0);
 
 	new_smi->interrupt_disabled = true;
 	atomic_set(&new_smi->stop_operation, 0);
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 917403f..dddd899 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -18,6 +18,7 @@
 #include <linux/raw.h>
 #include <linux/tty.h>
 #include <linux/capability.h>
+#include <linux/security.h>
 #include <linux/ptrace.h>
 #include <linux/device.h>
 #include <linux/highmem.h>
@@ -36,6 +37,10 @@
 
 #define DEVPORT_MINOR	4
 
+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
+extern const struct file_operations grsec_fops;
+#endif
+
 static inline unsigned long size_inside_page(unsigned long start,
 					     unsigned long size)
 {
@@ -67,9 +72,13 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
 
 	while (cursor < to) {
 		if (!devmem_is_allowed(pfn)) {
+#ifdef CONFIG_GRKERNSEC_KMEM
+			gr_handle_mem_readwrite(from, to);
+#else
 			printk(KERN_INFO
 		"Program %s tried to access /dev/mem between %Lx->%Lx.\n",
 				current->comm, from, to);
+#endif
 			return 0;
 		}
 		cursor += PAGE_SIZE;
@@ -77,6 +86,11 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
 	}
 	return 1;
 }
+#elif defined(CONFIG_GRKERNSEC_KMEM)
+static inline int range_is_allowed(unsigned long pfn, unsigned long size)
+{
+	return 0;
+}
 #else
 static inline int range_is_allowed(unsigned long pfn, unsigned long size)
 {
@@ -122,6 +136,7 @@ static ssize_t read_mem(struct file *file, char __user *buf,
 
 	while (count > 0) {
 		unsigned long remaining;
+		char *temp;
 
 		sz = size_inside_page(p, count);
 
@@ -137,7 +152,23 @@ static ssize_t read_mem(struct file *file, char __user *buf,
 		if (!ptr)
 			return -EFAULT;
 
-		remaining = copy_to_user(buf, ptr, sz);
+#ifdef CONFIG_PAX_USERCOPY
+		temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY);
+		if (!temp) {
+			unxlate_dev_mem_ptr(p, ptr);
+			return -ENOMEM;
+		}
+		memcpy(temp, ptr, sz);
+#else
+		temp = ptr;
+#endif
+
+		remaining = copy_to_user(buf, temp, sz);
+
+#ifdef CONFIG_PAX_USERCOPY
+		kfree(temp);
+#endif
+
 		unxlate_dev_mem_ptr(p, ptr);
 		if (remaining)
 			return -EFAULT;
@@ -369,9 +400,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
 			 size_t count, loff_t *ppos)
 {
 	unsigned long p = *ppos;
-	ssize_t low_count, read, sz;
+	ssize_t low_count, read, sz, err = 0;
 	char *kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
-	int err = 0;
 
 	read = 0;
 	if (p < (unsigned long) high_memory) {
@@ -393,6 +423,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
 		}
 #endif
 		while (low_count > 0) {
+			char *temp;
+
 			sz = size_inside_page(p, low_count);
 
 			/*
@@ -402,7 +434,22 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
 			 */
 			kbuf = xlate_dev_kmem_ptr((char *)p);
 
-			if (copy_to_user(buf, kbuf, sz))
+#ifdef CONFIG_PAX_USERCOPY
+			temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY);
+			if (!temp)
+				return -ENOMEM;
+			memcpy(temp, kbuf, sz);
+#else
+			temp = kbuf;
+#endif
+
+			err = copy_to_user(buf, temp, sz);
+
+#ifdef CONFIG_PAX_USERCOPY
+			kfree(temp);
+#endif
+
+			if (err)
 				return -EFAULT;
 			buf += sz;
 			p += sz;
@@ -827,6 +874,9 @@ static const struct memdev {
 #ifdef CONFIG_PRINTK
 	[11] = { "kmsg", 0644, &kmsg_fops, NULL },
 #endif
+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
+	[13] = { "grsec",S_IRUSR | S_IWUGO, &grsec_fops, NULL },
+#endif
 };
 
 static int memory_open(struct inode *inode, struct file *filp)
@@ -898,7 +948,7 @@ static int __init chr_dev_init(void)
 			continue;
 
 		device_create(mem_class, NULL, MKDEV(MEM_MAJOR, minor),
-			      NULL, devlist[minor].name);
+			      NULL, "%s", devlist[minor].name);
 	}
 
 	return tty_init();
diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
index 9df78e2..01ba9ae 100644
--- a/drivers/char/nvram.c
+++ b/drivers/char/nvram.c
@@ -247,7 +247,7 @@ static ssize_t nvram_read(struct file *file, char __user *buf,
 
 	spin_unlock_irq(&rtc_lock);
 
-	if (copy_to_user(buf, contents, tmp - contents))
+	if (tmp - contents > sizeof(contents) || copy_to_user(buf, contents, tmp - contents))
 		return -EFAULT;
 
 	*ppos = i;
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 8320abd..ec48108 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -2345,9 +2345,9 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp)
 
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):mgslpc_close(%s) entry, count=%d\n",
-			 __FILE__, __LINE__, info->device_name, port->count);
+			 __FILE__, __LINE__, info->device_name, atomic_read(&port->count));
 
-	WARN_ON(!port->count);
+	WARN_ON(!atomic_read(&port->count));
 
 	if (tty_port_close_start(port, tty, filp) == 0)
 		goto cleanup;
@@ -2365,7 +2365,7 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp)
 cleanup:
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__, __LINE__,
-			tty->driver->name, port->count);
+			tty->driver->name, atomic_read(&port->count));
 }
 
 /* Wait until the transmitter is empty.
@@ -2507,7 +2507,7 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
 
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
-			 __FILE__, __LINE__, tty->driver->name, port->count);
+			 __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
 
 	/* If port is closing, signal caller to try again */
 	if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){
@@ -2527,11 +2527,11 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
 		goto cleanup;
 	}
 	spin_lock(&port->lock);
-	port->count++;
+	atomic_inc(&port->count);
 	spin_unlock(&port->lock);
 	spin_unlock_irqrestore(&info->netlock, flags);
 
-	if (port->count == 1) {
+	if (atomic_read(&port->count) == 1) {
 		/* 1st open on this device, init hardware */
 		retval = startup(info, tty);
 		if (retval < 0)
@@ -3920,7 +3920,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
 	unsigned short new_crctype;
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	switch (encoding)
@@ -4024,7 +4024,7 @@ static int hdlcdev_open(struct net_device *dev)
 
 	/* arbitrate between network and tty opens */
 	spin_lock_irqsave(&info->netlock, flags);
-	if (info->port.count != 0 || info->netcount != 0) {
+	if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
 		printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
 		spin_unlock_irqrestore(&info->netlock, flags);
 		return -EBUSY;
@@ -4114,7 +4114,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		printk("%s:hdlcdev_ioctl(%s)\n", __FILE__, dev->name);
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	if (cmd != SIOCWANDEV)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 71529e1..822b036 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -284,9 +284,6 @@
 /*
  * To allow fractional bits to be tracked, the entropy_count field is
  * denominated in units of 1/8th bits.
- *
- * 2*(ENTROPY_SHIFT + log2(poolbits)) must <= 31, or the multiply in
- * credit_entropy_bits() needs to be 64 bits wide.
  */
 #define ENTROPY_SHIFT 3
 #define ENTROPY_BITS(r) ((r)->entropy_count >> ENTROPY_SHIFT)
@@ -433,9 +430,9 @@ struct entropy_store {
 };
 
 static void push_to_pool(struct work_struct *work);
-static __u32 input_pool_data[INPUT_POOL_WORDS];
-static __u32 blocking_pool_data[OUTPUT_POOL_WORDS];
-static __u32 nonblocking_pool_data[OUTPUT_POOL_WORDS];
+static __u32 input_pool_data[INPUT_POOL_WORDS] __latent_entropy;
+static __u32 blocking_pool_data[OUTPUT_POOL_WORDS] __latent_entropy;
+static __u32 nonblocking_pool_data[OUTPUT_POOL_WORDS] __latent_entropy;
 
 static struct entropy_store input_pool = {
 	.poolinfo = &poolinfo_table[0],
@@ -524,8 +521,8 @@ static void _mix_pool_bytes(struct entropy_store *r, const void *in,
 		input_rotate = (input_rotate + (i ? 7 : 14)) & 31;
 	}
 
-	ACCESS_ONCE(r->input_rotate) = input_rotate;
-	ACCESS_ONCE(r->add_ptr) = i;
+	ACCESS_ONCE_RW(r->input_rotate) = input_rotate;
+	ACCESS_ONCE_RW(r->add_ptr) = i;
 	smp_wmb();
 
 	if (out)
@@ -632,7 +629,7 @@ retry:
 		/* The +2 corresponds to the /4 in the denominator */
 
 		do {
-			unsigned int anfrac = min(pnfrac, pool_size/2);
+			u64 anfrac = min(pnfrac, pool_size/2);
 			unsigned int add =
 				((pool_size - entropy_count)*anfrac*3) >> s;
 
@@ -1177,7 +1174,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
 
 		extract_buf(r, tmp);
 		i = min_t(int, nbytes, EXTRACT_SIZE);
-		if (copy_to_user(buf, tmp, i)) {
+		if (i > sizeof(tmp) || copy_to_user(buf, tmp, i)) {
 			ret = -EFAULT;
 			break;
 		}
@@ -1567,7 +1564,7 @@ static char sysctl_bootid[16];
 static int proc_do_uuid(struct ctl_table *table, int write,
 			void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table fake_table;
+	ctl_table_no_const fake_table;
 	unsigned char buf[64], tmp_uuid[16], *uuid;
 
 	uuid = table->data;
@@ -1597,7 +1594,7 @@ static int proc_do_uuid(struct ctl_table *table, int write,
 static int proc_do_entropy(struct ctl_table *table, int write,
 			   void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table fake_table;
+	ctl_table_no_const fake_table;
 	int entropy_count;
 
 	entropy_count = *(int *)table->data >> ENTROPY_SHIFT;
diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
index 7cc1fe22..b602d6b 100644
--- a/drivers/char/sonypi.c
+++ b/drivers/char/sonypi.c
@@ -54,6 +54,7 @@
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
+#include <asm/local.h>
 
 #include <linux/sonypi.h>
 
@@ -490,7 +491,7 @@ static struct sonypi_device {
 	spinlock_t fifo_lock;
 	wait_queue_head_t fifo_proc_list;
 	struct fasync_struct *fifo_async;
-	int open_count;
+	local_t open_count;
 	int model;
 	struct input_dev *input_jog_dev;
 	struct input_dev *input_key_dev;
@@ -892,7 +893,7 @@ static int sonypi_misc_fasync(int fd, struct file *filp, int on)
 static int sonypi_misc_release(struct inode *inode, struct file *file)
 {
 	mutex_lock(&sonypi_device.lock);
-	sonypi_device.open_count--;
+	local_dec(&sonypi_device.open_count);
 	mutex_unlock(&sonypi_device.lock);
 	return 0;
 }
@@ -901,9 +902,9 @@ static int sonypi_misc_open(struct inode *inode, struct file *file)
 {
 	mutex_lock(&sonypi_device.lock);
 	/* Flush input queue on first open */
-	if (!sonypi_device.open_count)
+	if (!local_read(&sonypi_device.open_count))
 		kfifo_reset(&sonypi_device.fifo);
-	sonypi_device.open_count++;
+	local_inc(&sonypi_device.open_count);
 	mutex_unlock(&sonypi_device.lock);
 
 	return 0;
diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c
index 565a947..dcdc06e 100644
--- a/drivers/char/tpm/tpm_acpi.c
+++ b/drivers/char/tpm/tpm_acpi.c
@@ -98,11 +98,12 @@ int read_log(struct tpm_bios_log *log)
 	virt = acpi_os_map_iomem(start, len);
 	if (!virt) {
 		kfree(log->bios_event_log);
+		log->bios_event_log = NULL;
 		printk("%s: ERROR - Unable to map memory\n", __func__);
 		return -EIO;
 	}
 
-	memcpy_fromio(log->bios_event_log, virt, len);
+	memcpy_fromio(log->bios_event_log, (const char __force_kernel *)virt, len);
 
 	acpi_os_unmap_iomem(virt, len);
 	return 0;
diff --git a/drivers/char/tpm/tpm_eventlog.c b/drivers/char/tpm/tpm_eventlog.c
index 59f7cb2..bac8b6d 100644
--- a/drivers/char/tpm/tpm_eventlog.c
+++ b/drivers/char/tpm/tpm_eventlog.c
@@ -95,7 +95,7 @@ static void *tpm_bios_measurements_start(struct seq_file *m, loff_t *pos)
 	event = addr;
 
 	if ((event->event_type == 0 && event->event_size == 0) ||
-	    ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit))
+	    (event->event_size >= limit - addr - sizeof(struct tcpa_event)))
 		return NULL;
 
 	return addr;
@@ -120,7 +120,7 @@ static void *tpm_bios_measurements_next(struct seq_file *m, void *v,
 		return NULL;
 
 	if ((event->event_type == 0 && event->event_size == 0) ||
-	    ((v + sizeof(struct tcpa_event) + event->event_size) >= limit))
+	    (event->event_size >= limit - v - sizeof(struct tcpa_event)))
 		return NULL;
 
 	(*pos)++;
@@ -213,7 +213,8 @@ static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v)
 	int i;
 
 	for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++)
-		seq_putc(m, data[i]);
+		if (!seq_putc(m, data[i]))
+			return -EFAULT;
 
 	return 0;
 }
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 60aafb8..10c08e0 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -684,7 +684,7 @@ static ssize_t fill_readbuf(struct port *port, char *out_buf, size_t out_count,
 	if (to_user) {
 		ssize_t ret;
 
-		ret = copy_to_user(out_buf, buf->buf + buf->offset, out_count);
+		ret = copy_to_user((char __force_user *)out_buf, buf->buf + buf->offset, out_count);
 		if (ret)
 			return -EFAULT;
 	} else {
@@ -787,7 +787,7 @@ static ssize_t port_fops_read(struct file *filp, char __user *ubuf,
 	if (!port_has_data(port) && !port->host_connected)
 		return 0;
 
-	return fill_readbuf(port, ubuf, count, true);
+	return fill_readbuf(port, (char __force_kernel *)ubuf, count, true);
 }
 
 static int wait_port_writable(struct port *port, bool nonblock)
diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c
index 57a078e..c17cde8 100644
--- a/drivers/clk/clk-composite.c
+++ b/drivers/clk/clk-composite.c
@@ -146,7 +146,7 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
 	struct clk *clk;
 	struct clk_init_data init;
 	struct clk_composite *composite;
-	struct clk_ops *clk_composite_ops;
+	clk_ops_no_const *clk_composite_ops;
 
 	composite = kzalloc(sizeof(*composite), GFP_KERNEL);
 	if (!composite) {
diff --git a/drivers/clk/socfpga/clk-gate.c b/drivers/clk/socfpga/clk-gate.c
index dd3a78c..386d49c 100644
--- a/drivers/clk/socfpga/clk-gate.c
+++ b/drivers/clk/socfpga/clk-gate.c
@@ -22,6 +22,7 @@
 #include <linux/mfd/syscon.h>
 #include <linux/of.h>
 #include <linux/regmap.h>
+#include <asm/pgtable.h>
 
 #include "clk.h"
 
@@ -174,7 +175,7 @@ static int socfpga_clk_prepare(struct clk_hw *hwclk)
 	return 0;
 }
 
-static struct clk_ops gateclk_ops = {
+static clk_ops_no_const gateclk_ops __read_only = {
 	.prepare = socfpga_clk_prepare,
 	.recalc_rate = socfpga_clk_recalc_rate,
 	.get_parent = socfpga_clk_get_parent,
@@ -208,8 +209,10 @@ static void __init __socfpga_gate_init(struct device_node *node,
 		socfpga_clk->hw.reg = clk_mgr_base_addr + clk_gate[0];
 		socfpga_clk->hw.bit_idx = clk_gate[1];
 
-		gateclk_ops.enable = clk_gate_ops.enable;
-		gateclk_ops.disable = clk_gate_ops.disable;
+		pax_open_kernel();
+		*(void **)&gateclk_ops.enable = clk_gate_ops.enable;
+		*(void **)&gateclk_ops.disable = clk_gate_ops.disable;
+		pax_close_kernel();
 	}
 
 	rc = of_property_read_u32(node, "fixed-divider", &fixed_div);
diff --git a/drivers/clk/socfpga/clk-pll.c b/drivers/clk/socfpga/clk-pll.c
index de6da95..c98278b 100644
--- a/drivers/clk/socfpga/clk-pll.c
+++ b/drivers/clk/socfpga/clk-pll.c
@@ -21,6 +21,7 @@
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
+#include <asm/pgtable.h>
 
 #include "clk.h"
 
@@ -76,7 +77,7 @@ static u8 clk_pll_get_parent(struct clk_hw *hwclk)
 			CLK_MGR_PLL_CLK_SRC_MASK;
 }
 
-static struct clk_ops clk_pll_ops = {
+static clk_ops_no_const clk_pll_ops __read_only = {
 	.recalc_rate = clk_pll_recalc_rate,
 	.get_parent = clk_pll_get_parent,
 };
@@ -120,8 +121,10 @@ static __init struct clk *__socfpga_pll_init(struct device_node *node,
 	pll_clk->hw.hw.init = &init;
 
 	pll_clk->hw.bit_idx = SOCFPGA_PLL_EXT_ENA;
-	clk_pll_ops.enable = clk_gate_ops.enable;
-	clk_pll_ops.disable = clk_gate_ops.disable;
+	pax_open_kernel();
+	*(void **)&clk_pll_ops.enable = clk_gate_ops.enable;
+	*(void **)&clk_pll_ops.disable = clk_gate_ops.disable;
+	pax_close_kernel();
 
 	clk = clk_register(NULL, &pll_clk->hw.hw);
 	if (WARN_ON(IS_ERR(clk))) {
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
index b0c18ed..1713a80 100644
--- a/drivers/cpufreq/acpi-cpufreq.c
+++ b/drivers/cpufreq/acpi-cpufreq.c
@@ -675,8 +675,11 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	data->acpi_data = per_cpu_ptr(acpi_perf_data, cpu);
 	per_cpu(acfreq_data, cpu) = data;
 
-	if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))
-		acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
+	if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
+		pax_open_kernel();
+		*(u8 *)&acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
+		pax_close_kernel();
+	}
 
 	result = acpi_processor_register_performance(data->acpi_data, cpu);
 	if (result)
@@ -809,7 +812,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 		policy->cur = acpi_cpufreq_guess_freq(data, policy->cpu);
 		break;
 	case ACPI_ADR_SPACE_FIXED_HARDWARE:
-		acpi_cpufreq_driver.get = get_cur_freq_on_cpu;
+		pax_open_kernel();
+		*(void **)&acpi_cpufreq_driver.get = get_cur_freq_on_cpu;
+		pax_close_kernel();
 		break;
 	default:
 		break;
@@ -903,8 +908,10 @@ static void __init acpi_cpufreq_boost_init(void)
 		if (!msrs)
 			return;
 
-		acpi_cpufreq_driver.boost_supported = true;
-		acpi_cpufreq_driver.boost_enabled = boost_state(0);
+		pax_open_kernel();
+		*(bool *)&acpi_cpufreq_driver.boost_supported = true;
+		*(bool *)&acpi_cpufreq_driver.boost_enabled = boost_state(0);
+		pax_close_kernel();
 
 		cpu_notifier_register_begin();
 
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 6f02485..13684ae 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -2100,7 +2100,7 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor)
 	}
 
 	mutex_lock(&cpufreq_governor_mutex);
-	list_del(&governor->governor_list);
+	pax_list_del(&governor->governor_list);
 	mutex_unlock(&cpufreq_governor_mutex);
 	return;
 }
@@ -2316,7 +2316,7 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __refdata cpufreq_cpu_notifier = {
+static struct notifier_block cpufreq_cpu_notifier = {
 	.notifier_call = cpufreq_cpu_callback,
 };
 
@@ -2356,13 +2356,17 @@ int cpufreq_boost_trigger_state(int state)
 		return 0;
 
 	write_lock_irqsave(&cpufreq_driver_lock, flags);
-	cpufreq_driver->boost_enabled = state;
+	pax_open_kernel();
+	*(bool *)&cpufreq_driver->boost_enabled = state;
+	pax_close_kernel();
 	write_unlock_irqrestore(&cpufreq_driver_lock, flags);
 
 	ret = cpufreq_driver->set_boost(state);
 	if (ret) {
 		write_lock_irqsave(&cpufreq_driver_lock, flags);
-		cpufreq_driver->boost_enabled = !state;
+		pax_open_kernel();
+		*(bool *)&cpufreq_driver->boost_enabled = !state;
+		pax_close_kernel();
 		write_unlock_irqrestore(&cpufreq_driver_lock, flags);
 
 		pr_err("%s: Cannot %s BOOST\n",
@@ -2419,8 +2423,11 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
 
 	pr_debug("trying to register driver %s\n", driver_data->name);
 
-	if (driver_data->setpolicy)
-		driver_data->flags |= CPUFREQ_CONST_LOOPS;
+	if (driver_data->setpolicy) {
+		pax_open_kernel();
+		*(u8 *)&driver_data->flags |= CPUFREQ_CONST_LOOPS;
+		pax_close_kernel();
+	}
 
 	write_lock_irqsave(&cpufreq_driver_lock, flags);
 	if (cpufreq_driver) {
@@ -2435,8 +2442,11 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
 		 * Check if driver provides function to enable boost -
 		 * if not, use cpufreq_boost_set_sw as default
 		 */
-		if (!cpufreq_driver->set_boost)
-			cpufreq_driver->set_boost = cpufreq_boost_set_sw;
+		if (!cpufreq_driver->set_boost) {
+			pax_open_kernel();
+			*(void **)&cpufreq_driver->set_boost = cpufreq_boost_set_sw;
+			pax_close_kernel();
+		}
 
 		ret = cpufreq_sysfs_create_file(&boost.attr);
 		if (ret) {
diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
index 1b44496..b80ff5e 100644
--- a/drivers/cpufreq/cpufreq_governor.c
+++ b/drivers/cpufreq/cpufreq_governor.c
@@ -245,7 +245,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 	struct dbs_data *dbs_data;
 	struct od_cpu_dbs_info_s *od_dbs_info = NULL;
 	struct cs_cpu_dbs_info_s *cs_dbs_info = NULL;
-	struct od_ops *od_ops = NULL;
+	const struct od_ops *od_ops = NULL;
 	struct od_dbs_tuners *od_tuners = NULL;
 	struct cs_dbs_tuners *cs_tuners = NULL;
 	struct cpu_dbs_common_info *cpu_cdbs;
@@ -311,7 +311,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 		if ((cdata->governor == GOV_CONSERVATIVE) &&
 				(!policy->governor->initialized)) {
-			struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
+			const struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
 
 			cpufreq_register_notifier(cs_ops->notifier_block,
 					CPUFREQ_TRANSITION_NOTIFIER);
@@ -331,7 +331,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
 
 			if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) &&
 				(policy->governor->initialized == 1)) {
-				struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
+				const struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
 
 				cpufreq_unregister_notifier(cs_ops->notifier_block,
 						CPUFREQ_TRANSITION_NOTIFIER);
diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
index cc401d1..8197340 100644
--- a/drivers/cpufreq/cpufreq_governor.h
+++ b/drivers/cpufreq/cpufreq_governor.h
@@ -212,7 +212,7 @@ struct common_dbs_data {
 	void (*exit)(struct dbs_data *dbs_data);
 
 	/* Governor specific ops, see below */
-	void *gov_ops;
+	const void *gov_ops;
 };
 
 /* Governor Per policy data */
@@ -232,7 +232,7 @@ struct od_ops {
 	unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy,
 			unsigned int freq_next, unsigned int relation);
 	void (*freq_increase)(struct cpufreq_policy *policy, unsigned int freq);
-};
+} __no_const;
 
 struct cs_ops {
 	struct notifier_block *notifier_block;
diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
index 18d4091..434be15 100644
--- a/drivers/cpufreq/cpufreq_ondemand.c
+++ b/drivers/cpufreq/cpufreq_ondemand.c
@@ -521,7 +521,7 @@ static void od_exit(struct dbs_data *dbs_data)
 
 define_get_cpu_dbs_routines(od_cpu_dbs_info);
 
-static struct od_ops od_ops = {
+static struct od_ops od_ops __read_only = {
 	.powersave_bias_init_cpu = ondemand_powersave_bias_init_cpu,
 	.powersave_bias_target = generic_powersave_bias_target,
 	.freq_increase = dbs_freq_increase,
@@ -576,14 +576,18 @@ void od_register_powersave_bias_handler(unsigned int (*f)
 		(struct cpufreq_policy *, unsigned int, unsigned int),
 		unsigned int powersave_bias)
 {
-	od_ops.powersave_bias_target = f;
+	pax_open_kernel();
+	*(void **)&od_ops.powersave_bias_target = f;
+	pax_close_kernel();
 	od_set_powersave_bias(powersave_bias);
 }
 EXPORT_SYMBOL_GPL(od_register_powersave_bias_handler);
 
 void od_unregister_powersave_bias_handler(void)
 {
-	od_ops.powersave_bias_target = generic_powersave_bias_target;
+	pax_open_kernel();
+	*(void **)&od_ops.powersave_bias_target = generic_powersave_bias_target;
+	pax_close_kernel();
 	od_set_powersave_bias(0);
 }
 EXPORT_SYMBOL_GPL(od_unregister_powersave_bias_handler);
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 86631cb..c34ec78 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -121,10 +121,10 @@ struct pstate_funcs {
 struct cpu_defaults {
 	struct pstate_adjust_policy pid_policy;
 	struct pstate_funcs funcs;
-};
+} __do_const;
 
 static struct pstate_adjust_policy pid_params;
-static struct pstate_funcs pstate_funcs;
+static struct pstate_funcs *pstate_funcs;
 
 struct perf_limits {
 	int no_turbo;
@@ -526,7 +526,7 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
 
 	cpu->pstate.current_pstate = pstate;
 
-	pstate_funcs.set(cpu, pstate);
+	pstate_funcs->set(cpu, pstate);
 }
 
 static inline void intel_pstate_pstate_increase(struct cpudata *cpu, int steps)
@@ -546,12 +546,12 @@ static inline void intel_pstate_pstate_decrease(struct cpudata *cpu, int steps)
 
 static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
 {
-	cpu->pstate.min_pstate = pstate_funcs.get_min();
-	cpu->pstate.max_pstate = pstate_funcs.get_max();
-	cpu->pstate.turbo_pstate = pstate_funcs.get_turbo();
+	cpu->pstate.min_pstate = pstate_funcs->get_min();
+	cpu->pstate.max_pstate = pstate_funcs->get_max();
+	cpu->pstate.turbo_pstate = pstate_funcs->get_turbo();
 
-	if (pstate_funcs.get_vid)
-		pstate_funcs.get_vid(cpu);
+	if (pstate_funcs->get_vid)
+		pstate_funcs->get_vid(cpu);
 	intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
 }
 
@@ -838,9 +838,9 @@ static int intel_pstate_msrs_not_valid(void)
 	rdmsrl(MSR_IA32_APERF, aperf);
 	rdmsrl(MSR_IA32_MPERF, mperf);
 
-	if (!pstate_funcs.get_max() ||
-		!pstate_funcs.get_min() ||
-		!pstate_funcs.get_turbo())
+	if (!pstate_funcs->get_max() ||
+		!pstate_funcs->get_min() ||
+		!pstate_funcs->get_turbo())
 		return -ENODEV;
 
 	rdmsrl(MSR_IA32_APERF, tmp);
@@ -854,7 +854,7 @@ static int intel_pstate_msrs_not_valid(void)
 	return 0;
 }
 
-static void copy_pid_params(struct pstate_adjust_policy *policy)
+static void copy_pid_params(const struct pstate_adjust_policy *policy)
 {
 	pid_params.sample_rate_ms = policy->sample_rate_ms;
 	pid_params.p_gain_pct = policy->p_gain_pct;
@@ -866,11 +866,7 @@ static void copy_pid_params(struct pstate_adjust_policy *policy)
 
 static void copy_cpu_funcs(struct pstate_funcs *funcs)
 {
-	pstate_funcs.get_max   = funcs->get_max;
-	pstate_funcs.get_min   = funcs->get_min;
-	pstate_funcs.get_turbo = funcs->get_turbo;
-	pstate_funcs.set       = funcs->set;
-	pstate_funcs.get_vid   = funcs->get_vid;
+	pstate_funcs = funcs;
 }
 
 #if IS_ENABLED(CONFIG_ACPI)
diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
index 529cfd9..0e28fff 100644
--- a/drivers/cpufreq/p4-clockmod.c
+++ b/drivers/cpufreq/p4-clockmod.c
@@ -134,10 +134,14 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
 		case 0x0F: /* Core Duo */
 		case 0x16: /* Celeron Core */
 		case 0x1C: /* Atom */
-			p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+			pax_open_kernel();
+			*(u8 *)&p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+			pax_close_kernel();
 			return speedstep_get_frequency(SPEEDSTEP_CPU_PCORE);
 		case 0x0D: /* Pentium M (Dothan) */
-			p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+			pax_open_kernel();
+			*(u8 *)&p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+			pax_close_kernel();
 			/* fall through */
 		case 0x09: /* Pentium M (Banias) */
 			return speedstep_get_frequency(SPEEDSTEP_CPU_PM);
@@ -149,7 +153,9 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
 
 	/* on P-4s, the TSC runs with constant frequency independent whether
 	 * throttling is active or not. */
-	p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+	pax_open_kernel();
+	*(u8 *)&p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+	pax_close_kernel();
 
 	if (speedstep_detect_processor() == SPEEDSTEP_CPU_P4M) {
 		printk(KERN_WARNING PFX "Warning: Pentium 4-M detected. "
diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c
index 9bb42ba..b01b4a2 100644
--- a/drivers/cpufreq/sparc-us3-cpufreq.c
+++ b/drivers/cpufreq/sparc-us3-cpufreq.c
@@ -18,14 +18,12 @@
 #include <asm/head.h>
 #include <asm/timer.h>
 
-static struct cpufreq_driver *cpufreq_us3_driver;
-
 struct us3_freq_percpu_info {
 	struct cpufreq_frequency_table table[4];
 };
 
 /* Indexed by cpu number. */
-static struct us3_freq_percpu_info *us3_freq_table;
+static struct us3_freq_percpu_info us3_freq_table[NR_CPUS];
 
 /* UltraSPARC-III has three dividers: 1, 2, and 32.  These are controlled
  * in the Safari config register.
@@ -156,16 +154,27 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
 
 static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
 {
-	if (cpufreq_us3_driver)
-		us3_freq_target(policy, 0);
+	us3_freq_target(policy, 0);
 
 	return 0;
 }
 
+static int __init us3_freq_init(void);
+static void __exit us3_freq_exit(void);
+
+static struct cpufreq_driver cpufreq_us3_driver = {
+	.init		= us3_freq_cpu_init,
+	.verify		= cpufreq_generic_frequency_table_verify,
+	.target_index	= us3_freq_target,
+	.get		= us3_freq_get,
+	.exit		= us3_freq_cpu_exit,
+	.name		= "UltraSPARC-III",
+
+};
+
 static int __init us3_freq_init(void)
 {
 	unsigned long manuf, impl, ver;
-	int ret;
 
 	if (tlb_type != cheetah && tlb_type != cheetah_plus)
 		return -ENODEV;
@@ -178,55 +187,15 @@ static int __init us3_freq_init(void)
 	    (impl == CHEETAH_IMPL ||
 	     impl == CHEETAH_PLUS_IMPL ||
 	     impl == JAGUAR_IMPL ||
-	     impl == PANTHER_IMPL)) {
-		struct cpufreq_driver *driver;
-
-		ret = -ENOMEM;
-		driver = kzalloc(sizeof(*driver), GFP_KERNEL);
-		if (!driver)
-			goto err_out;
-
-		us3_freq_table = kzalloc((NR_CPUS * sizeof(*us3_freq_table)),
-			GFP_KERNEL);
-		if (!us3_freq_table)
-			goto err_out;
-
-		driver->init = us3_freq_cpu_init;
-		driver->verify = cpufreq_generic_frequency_table_verify;
-		driver->target_index = us3_freq_target;
-		driver->get = us3_freq_get;
-		driver->exit = us3_freq_cpu_exit;
-		strcpy(driver->name, "UltraSPARC-III");
-
-		cpufreq_us3_driver = driver;
-		ret = cpufreq_register_driver(driver);
-		if (ret)
-			goto err_out;
-
-		return 0;
-
-err_out:
-		if (driver) {
-			kfree(driver);
-			cpufreq_us3_driver = NULL;
-		}
-		kfree(us3_freq_table);
-		us3_freq_table = NULL;
-		return ret;
-	}
+	     impl == PANTHER_IMPL))
+		return cpufreq_register_driver(&cpufreq_us3_driver);
 
 	return -ENODEV;
 }
 
 static void __exit us3_freq_exit(void)
 {
-	if (cpufreq_us3_driver) {
-		cpufreq_unregister_driver(cpufreq_us3_driver);
-		kfree(cpufreq_us3_driver);
-		cpufreq_us3_driver = NULL;
-		kfree(us3_freq_table);
-		us3_freq_table = NULL;
-	}
+	cpufreq_unregister_driver(&cpufreq_us3_driver);
 }
 
 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c
index 7d4a315..21bb886 100644
--- a/drivers/cpufreq/speedstep-centrino.c
+++ b/drivers/cpufreq/speedstep-centrino.c
@@ -351,8 +351,11 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
 	    !cpu_has(cpu, X86_FEATURE_EST))
 		return -ENODEV;
 
-	if (cpu_has(cpu, X86_FEATURE_CONSTANT_TSC))
-		centrino_driver.flags |= CPUFREQ_CONST_LOOPS;
+	if (cpu_has(cpu, X86_FEATURE_CONSTANT_TSC)) {
+		pax_open_kernel();
+		*(u8 *)&centrino_driver.flags |= CPUFREQ_CONST_LOOPS;
+		pax_close_kernel();
+	}
 
 	if (policy->cpu != 0)
 		return -ENODEV;
diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index 9634f20..e1499c7 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -205,7 +205,7 @@ static int poll_idle(struct cpuidle_device *dev,
 
 static void poll_idle_init(struct cpuidle_driver *drv)
 {
-	struct cpuidle_state *state = &drv->states[0];
+	cpuidle_state_no_const *state = &drv->states[0];
 
 	snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
 	snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c
index ca89412..a7b9c49 100644
--- a/drivers/cpuidle/governor.c
+++ b/drivers/cpuidle/governor.c
@@ -87,7 +87,7 @@ int cpuidle_register_governor(struct cpuidle_governor *gov)
 	mutex_lock(&cpuidle_lock);
 	if (__cpuidle_find_governor(gov->name) == NULL) {
 		ret = 0;
-		list_add_tail(&gov->governor_list, &cpuidle_governors);
+		pax_list_add_tail((struct list_head *)&gov->governor_list, &cpuidle_governors);
 		if (!cpuidle_curr_governor ||
 		    cpuidle_curr_governor->rating < gov->rating)
 			cpuidle_switch_governor(gov);
diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
index efe2f17..b8124f9 100644
--- a/drivers/cpuidle/sysfs.c
+++ b/drivers/cpuidle/sysfs.c
@@ -135,7 +135,7 @@ static struct attribute *cpuidle_switch_attrs[] = {
 	NULL
 };
 
-static struct attribute_group cpuidle_attr_group = {
+static attribute_group_no_const cpuidle_attr_group = {
 	.attrs = cpuidle_default_attrs,
 	.name = "cpuidle",
 };
diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index 12fea3e..1e28f47 100644
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -51,7 +51,7 @@ module_param_string(hifn_pll_ref, hifn_pll_ref, sizeof(hifn_pll_ref), 0444);
 MODULE_PARM_DESC(hifn_pll_ref,
 		 "PLL reference clock (pci[freq] or ext[freq], default ext)");
 
-static atomic_t hifn_dev_number;
+static atomic_unchecked_t hifn_dev_number;
 
 #define ACRYPTO_OP_DECRYPT	0
 #define ACRYPTO_OP_ENCRYPT	1
@@ -2577,7 +2577,7 @@ static int hifn_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto err_out_disable_pci_device;
 
 	snprintf(name, sizeof(name), "hifn%d",
-			atomic_inc_return(&hifn_dev_number)-1);
+			atomic_inc_return_unchecked(&hifn_dev_number)-1);
 
 	err = pci_request_regions(pdev, name);
 	if (err)
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index 9f90369..bfcacdb 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -673,7 +673,7 @@ int devfreq_add_governor(struct devfreq_governor *governor)
 		goto err_out;
 	}
 
-	list_add(&governor->node, &devfreq_governor_list);
+	pax_list_add((struct list_head *)&governor->node, &devfreq_governor_list);
 
 	list_for_each_entry(devfreq, &devfreq_list, node) {
 		int ret = 0;
@@ -761,7 +761,7 @@ int devfreq_remove_governor(struct devfreq_governor *governor)
 		}
 	}
 
-	list_del(&governor->node);
+	pax_list_del((struct list_head *)&governor->node);
 err_out:
 	mutex_unlock(&devfreq_list_lock);
 
diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c
index b35007e..55ad549 100644
--- a/drivers/dma/sh/shdma-base.c
+++ b/drivers/dma/sh/shdma-base.c
@@ -267,8 +267,8 @@ static int shdma_alloc_chan_resources(struct dma_chan *chan)
 		schan->slave_id = -EINVAL;
 	}
 
-	schan->desc = kcalloc(NR_DESCS_PER_CHANNEL,
-			      sdev->desc_size, GFP_KERNEL);
+	schan->desc = kcalloc(sdev->desc_size,
+			      NR_DESCS_PER_CHANNEL, GFP_KERNEL);
 	if (!schan->desc) {
 		ret = -ENOMEM;
 		goto edescalloc;
diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index 146d5df..3c14970 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -514,7 +514,7 @@ static int sh_dmae_nmi_handler(struct notifier_block *self,
 	return ret;
 }
 
-static struct notifier_block sh_dmae_nmi_notifier __read_mostly = {
+static struct notifier_block sh_dmae_nmi_notifier = {
 	.notifier_call	= sh_dmae_nmi_handler,
 
 	/* Run before NMI debug handler and KGDB */
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index 592af5f..bb1d583 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -477,9 +477,9 @@ void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev,
  */
 int edac_device_alloc_index(void)
 {
-	static atomic_t device_indexes = ATOMIC_INIT(0);
+	static atomic_unchecked_t device_indexes = ATOMIC_INIT(0);
 
-	return atomic_inc_return(&device_indexes) - 1;
+	return atomic_inc_return_unchecked(&device_indexes) - 1;
 }
 EXPORT_SYMBOL_GPL(edac_device_alloc_index);
 
diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
index 01fae82..1dd8289 100644
--- a/drivers/edac/edac_mc_sysfs.c
+++ b/drivers/edac/edac_mc_sysfs.c
@@ -152,7 +152,7 @@ static const char * const edac_caps[] = {
 struct dev_ch_attribute {
 	struct device_attribute attr;
 	int channel;
-};
+} __do_const;
 
 #define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \
 	struct dev_ch_attribute dev_attr_legacy_##_name = \
@@ -1009,14 +1009,16 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
 	}
 
 	if (mci->set_sdram_scrub_rate || mci->get_sdram_scrub_rate) {
+		pax_open_kernel();
 		if (mci->get_sdram_scrub_rate) {
-			dev_attr_sdram_scrub_rate.attr.mode |= S_IRUGO;
-			dev_attr_sdram_scrub_rate.show = &mci_sdram_scrub_rate_show;
+			*(umode_t *)&dev_attr_sdram_scrub_rate.attr.mode |= S_IRUGO;
+			*(void **)&dev_attr_sdram_scrub_rate.show = &mci_sdram_scrub_rate_show;
 		}
 		if (mci->set_sdram_scrub_rate) {
-			dev_attr_sdram_scrub_rate.attr.mode |= S_IWUSR;
-			dev_attr_sdram_scrub_rate.store = &mci_sdram_scrub_rate_store;
+			*(umode_t *)&dev_attr_sdram_scrub_rate.attr.mode |= S_IWUSR;
+			*(void **)&dev_attr_sdram_scrub_rate.store = &mci_sdram_scrub_rate_store;
 		}
+		pax_close_kernel();
 		err = device_create_file(&mci->dev,
 					 &dev_attr_sdram_scrub_rate);
 		if (err) {
diff --git a/drivers/edac/edac_pci.c b/drivers/edac/edac_pci.c
index 2cf44b4d..6dd2dc7 100644
--- a/drivers/edac/edac_pci.c
+++ b/drivers/edac/edac_pci.c
@@ -29,7 +29,7 @@
 
 static DEFINE_MUTEX(edac_pci_ctls_mutex);
 static LIST_HEAD(edac_pci_list);
-static atomic_t pci_indexes = ATOMIC_INIT(0);
+static atomic_unchecked_t pci_indexes = ATOMIC_INIT(0);
 
 /*
  * edac_pci_alloc_ctl_info
@@ -315,7 +315,7 @@ EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period);
  */
 int edac_pci_alloc_index(void)
 {
-	return atomic_inc_return(&pci_indexes) - 1;
+	return atomic_inc_return_unchecked(&pci_indexes) - 1;
 }
 EXPORT_SYMBOL_GPL(edac_pci_alloc_index);
 
diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c
index e8658e4..22746d6 100644
--- a/drivers/edac/edac_pci_sysfs.c
+++ b/drivers/edac/edac_pci_sysfs.c
@@ -26,8 +26,8 @@ static int edac_pci_log_pe = 1;		/* log PCI parity errors */
 static int edac_pci_log_npe = 1;	/* log PCI non-parity error errors */
 static int edac_pci_poll_msec = 1000;	/* one second workq period */
 
-static atomic_t pci_parity_count = ATOMIC_INIT(0);
-static atomic_t pci_nonparity_count = ATOMIC_INIT(0);
+static atomic_unchecked_t pci_parity_count = ATOMIC_INIT(0);
+static atomic_unchecked_t pci_nonparity_count = ATOMIC_INIT(0);
 
 static struct kobject *edac_pci_top_main_kobj;
 static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0);
@@ -235,7 +235,7 @@ struct edac_pci_dev_attribute {
 	void *value;
 	 ssize_t(*show) (void *, char *);
 	 ssize_t(*store) (void *, const char *, size_t);
-};
+} __do_const;
 
 /* Set of show/store abstract level functions for PCI Parity object */
 static ssize_t edac_pci_dev_show(struct kobject *kobj, struct attribute *attr,
@@ -579,7 +579,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
 			edac_printk(KERN_CRIT, EDAC_PCI,
 				"Signaled System Error on %s\n",
 				pci_name(dev));
-			atomic_inc(&pci_nonparity_count);
+			atomic_inc_unchecked(&pci_nonparity_count);
 		}
 
 		if (status & (PCI_STATUS_PARITY)) {
@@ -587,7 +587,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
 				"Master Data Parity Error on %s\n",
 				pci_name(dev));
 
-			atomic_inc(&pci_parity_count);
+			atomic_inc_unchecked(&pci_parity_count);
 		}
 
 		if (status & (PCI_STATUS_DETECTED_PARITY)) {
@@ -595,7 +595,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
 				"Detected Parity Error on %s\n",
 				pci_name(dev));
 
-			atomic_inc(&pci_parity_count);
+			atomic_inc_unchecked(&pci_parity_count);
 		}
 	}
 
@@ -618,7 +618,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
 				edac_printk(KERN_CRIT, EDAC_PCI, "Bridge "
 					"Signaled System Error on %s\n",
 					pci_name(dev));
-				atomic_inc(&pci_nonparity_count);
+				atomic_inc_unchecked(&pci_nonparity_count);
 			}
 
 			if (status & (PCI_STATUS_PARITY)) {
@@ -626,7 +626,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
 					"Master Data Parity Error on "
 					"%s\n", pci_name(dev));
 
-				atomic_inc(&pci_parity_count);
+				atomic_inc_unchecked(&pci_parity_count);
 			}
 
 			if (status & (PCI_STATUS_DETECTED_PARITY)) {
@@ -634,7 +634,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
 					"Detected Parity Error on %s\n",
 					pci_name(dev));
 
-				atomic_inc(&pci_parity_count);
+				atomic_inc_unchecked(&pci_parity_count);
 			}
 		}
 	}
@@ -672,7 +672,7 @@ void edac_pci_do_parity_check(void)
 	if (!check_pci_errors)
 		return;
 
-	before_count = atomic_read(&pci_parity_count);
+	before_count = atomic_read_unchecked(&pci_parity_count);
 
 	/* scan all PCI devices looking for a Parity Error on devices and
 	 * bridges.
@@ -684,7 +684,7 @@ void edac_pci_do_parity_check(void)
 	/* Only if operator has selected panic on PCI Error */
 	if (edac_pci_get_panic_on_pe()) {
 		/* If the count is different 'after' from 'before' */
-		if (before_count != atomic_read(&pci_parity_count))
+		if (before_count != atomic_read_unchecked(&pci_parity_count))
 			panic("EDAC: PCI Parity Error");
 	}
 }
diff --git a/drivers/edac/mce_amd.h b/drivers/edac/mce_amd.h
index 51b7e3a..aa8a3e8 100644
--- a/drivers/edac/mce_amd.h
+++ b/drivers/edac/mce_amd.h
@@ -77,7 +77,7 @@ struct amd_decoder_ops {
 	bool (*mc0_mce)(u16, u8);
 	bool (*mc1_mce)(u16, u8);
 	bool (*mc2_mce)(u16, u8);
-};
+} __no_const;
 
 void amd_report_gart_errors(bool);
 void amd_register_ecc_decoder(void (*f)(int, struct mce *));
diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
index 57ea7f4..af06b76 100644
--- a/drivers/firewire/core-card.c
+++ b/drivers/firewire/core-card.c
@@ -528,9 +528,9 @@ void fw_card_initialize(struct fw_card *card,
 			const struct fw_card_driver *driver,
 			struct device *device)
 {
-	static atomic_t index = ATOMIC_INIT(-1);
+	static atomic_unchecked_t index = ATOMIC_INIT(-1);
 
-	card->index = atomic_inc_return(&index);
+	card->index = atomic_inc_return_unchecked(&index);
 	card->driver = driver;
 	card->device = device;
 	card->current_tlabel = 0;
@@ -680,7 +680,7 @@ EXPORT_SYMBOL_GPL(fw_card_release);
 
 void fw_core_remove_card(struct fw_card *card)
 {
-	struct fw_card_driver dummy_driver = dummy_driver_template;
+	fw_card_driver_no_const dummy_driver = dummy_driver_template;
 
 	card->driver->update_phy_reg(card, 4,
 				     PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index 2c6d5e1..a2cca6b 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -253,7 +253,7 @@ EXPORT_SYMBOL(fw_device_enable_phys_dma);
 struct config_rom_attribute {
 	struct device_attribute attr;
 	u32 key;
-};
+} __do_const;
 
 static ssize_t show_immediate(struct device *dev,
 			      struct device_attribute *dattr, char *buf)
diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
index eb6935c..3cc2bfa 100644
--- a/drivers/firewire/core-transaction.c
+++ b/drivers/firewire/core-transaction.c
@@ -38,6 +38,7 @@
 #include <linux/timer.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
+#include <linux/sched.h>
 
 #include <asm/byteorder.h>
 
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
index e1480ff6..1a429bd 100644
--- a/drivers/firewire/core.h
+++ b/drivers/firewire/core.h
@@ -111,6 +111,7 @@ struct fw_card_driver {
 
 	int (*stop_iso)(struct fw_iso_context *ctx);
 };
+typedef struct fw_card_driver __no_const fw_card_driver_no_const;
 
 void fw_card_initialize(struct fw_card *card,
 		const struct fw_card_driver *driver, struct device *device);
diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
index a66a321..f6caf20 100644
--- a/drivers/firewire/ohci.c
+++ b/drivers/firewire/ohci.c
@@ -2056,10 +2056,12 @@ static void bus_reset_work(struct work_struct *work)
 			  be32_to_cpu(ohci->next_header));
 	}
 
+#ifndef CONFIG_GRKERNSEC
 	if (param_remote_dma) {
 		reg_write(ohci, OHCI1394_PhyReqFilterHiSet, ~0);
 		reg_write(ohci, OHCI1394_PhyReqFilterLoSet, ~0);
 	}
+#endif
 
 	spin_unlock_irq(&ohci->lock);
 
@@ -2591,8 +2593,10 @@ static int ohci_enable_phys_dma(struct fw_card *card,
 	unsigned long flags;
 	int n, ret = 0;
 
+#ifndef CONFIG_GRKERNSEC
 	if (param_remote_dma)
 		return 0;
+#endif
 
 	/*
 	 * FIXME:  Make sure this bitmask is cleared when we clear the busReset
diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
index 94a58a0..f5eba42 100644
--- a/drivers/firmware/dmi-id.c
+++ b/drivers/firmware/dmi-id.c
@@ -16,7 +16,7 @@
 struct dmi_device_attribute{
 	struct device_attribute dev_attr;
 	int field;
-};
+} __do_const;
 #define to_dmi_dev_attr(_dev_attr) \
 	container_of(_dev_attr, struct dmi_device_attribute, dev_attr)
 
diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 17afc51..0ef90cd 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -835,7 +835,7 @@ int dmi_walk(void (*decode)(const struct dmi_header *, void *),
 	if (buf == NULL)
 		return -1;
 
-	dmi_table(buf, dmi_len, dmi_num, decode, private_data);
+	dmi_table((char __force_kernel *)buf, dmi_len, dmi_num, decode, private_data);
 
 	dmi_unmap(buf);
 	return 0;
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
index 1491dd4..aa910db 100644
--- a/drivers/firmware/efi/cper.c
+++ b/drivers/firmware/efi/cper.c
@@ -41,12 +41,12 @@
  */
 u64 cper_next_record_id(void)
 {
-	static atomic64_t seq;
+	static atomic64_unchecked_t seq;
 
-	if (!atomic64_read(&seq))
-		atomic64_set(&seq, ((u64)get_seconds()) << 32);
+	if (!atomic64_read_unchecked(&seq))
+		atomic64_set_unchecked(&seq, ((u64)get_seconds()) << 32);
 
-	return atomic64_inc_return(&seq);
+	return atomic64_inc_return_unchecked(&seq);
 }
 EXPORT_SYMBOL_GPL(cper_next_record_id);
 
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index dc79346..b39bd69 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -122,14 +122,16 @@ static struct attribute_group efi_subsys_attr_group = {
 };
 
 static struct efivars generic_efivars;
-static struct efivar_operations generic_ops;
+static efivar_operations_no_const generic_ops __read_only;
 
 static int generic_ops_register(void)
 {
-	generic_ops.get_variable = efi.get_variable;
-	generic_ops.set_variable = efi.set_variable;
-	generic_ops.get_next_variable = efi.get_next_variable;
-	generic_ops.query_variable_store = efi_query_variable_store;
+	pax_open_kernel();
+	*(void **)&generic_ops.get_variable = efi.get_variable;
+	*(void **)&generic_ops.set_variable = efi.set_variable;
+	*(void **)&generic_ops.get_next_variable = efi.get_next_variable;
+	*(void **)&generic_ops.query_variable_store = efi_query_variable_store;
+	pax_close_kernel();
 
 	return efivars_register(&generic_efivars, &generic_ops, efi_kobj);
 }
diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
index 463c565..02a5640 100644
--- a/drivers/firmware/efi/efivars.c
+++ b/drivers/firmware/efi/efivars.c
@@ -588,7 +588,7 @@ efivar_create_sysfs_entry(struct efivar_entry *new_var)
 static int
 create_efivars_bin_attributes(void)
 {
-	struct bin_attribute *attr;
+	bin_attribute_no_const *attr;
 	int error;
 
 	/* new_var */
diff --git a/drivers/firmware/google/memconsole.c b/drivers/firmware/google/memconsole.c
index 2f569aa..c95f4fb 100644
--- a/drivers/firmware/google/memconsole.c
+++ b/drivers/firmware/google/memconsole.c
@@ -155,7 +155,10 @@ static int __init memconsole_init(void)
 	if (!found_memconsole())
 		return -ENODEV;
 
-	memconsole_bin_attr.size = memconsole_length;
+	pax_open_kernel();
+	*(size_t *)&memconsole_bin_attr.size = memconsole_length;
+	pax_close_kernel();
+
 	return sysfs_create_bin_file(firmware_kobj, &memconsole_bin_attr);
 }
 
diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
index cde3605..8b69df7 100644
--- a/drivers/gpio/gpio-em.c
+++ b/drivers/gpio/gpio-em.c
@@ -278,7 +278,7 @@ static int em_gio_probe(struct platform_device *pdev)
 	struct em_gio_priv *p;
 	struct resource *io[2], *irq[2];
 	struct gpio_chip *gpio_chip;
-	struct irq_chip *irq_chip;
+	irq_chip_no_const *irq_chip;
 	const char *name = dev_name(&pdev->dev);
 	int ret;
 
diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
index 7030422..42a3fe9 100644
--- a/drivers/gpio/gpio-ich.c
+++ b/drivers/gpio/gpio-ich.c
@@ -94,7 +94,7 @@ struct ichx_desc {
 	 * this option allows driver caching written output values
 	 */
 	bool use_outlvl_cache;
-};
+} __do_const;
 
 static struct {
 	spinlock_t lock;
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index b6ae89e..ac7349c 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -357,7 +357,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
 	struct gpio_rcar_priv *p;
 	struct resource *io, *irq;
 	struct gpio_chip *gpio_chip;
-	struct irq_chip *irq_chip;
+	irq_chip_no_const *irq_chip;
 	struct device *dev = &pdev->dev;
 	const char *name = dev_name(dev);
 	int ret;
diff --git a/drivers/gpio/gpio-vr41xx.c b/drivers/gpio/gpio-vr41xx.c
index 66cbcc1..0c5e622 100644
--- a/drivers/gpio/gpio-vr41xx.c
+++ b/drivers/gpio/gpio-vr41xx.c
@@ -224,7 +224,7 @@ static int giu_get_irq(unsigned int irq)
 	printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n",
 	       maskl, pendl, maskh, pendh);
 
-	atomic_inc(&irq_err_count);
+	atomic_inc_unchecked(&irq_err_count);
 
 	return -EINVAL;
 }
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 2ebc907..01bdd6e 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -1482,8 +1482,10 @@ static void gpiochip_irqchip_remove(struct gpio_chip *gpiochip)
 	}
 
 	if (gpiochip->irqchip) {
-		gpiochip->irqchip->irq_request_resources = NULL;
-		gpiochip->irqchip->irq_release_resources = NULL;
+		pax_open_kernel();
+		*(void **)&gpiochip->irqchip->irq_request_resources = NULL;
+		*(void **)&gpiochip->irqchip->irq_release_resources = NULL;
+		pax_close_kernel();
 		gpiochip->irqchip = NULL;
 	}
 }
@@ -1549,8 +1551,11 @@ int gpiochip_irqchip_add(struct gpio_chip *gpiochip,
 		gpiochip->irqchip = NULL;
 		return -EINVAL;
 	}
-	irqchip->irq_request_resources = gpiochip_irq_reqres;
-	irqchip->irq_release_resources = gpiochip_irq_relres;
+
+	pax_open_kernel();
+	*(void **)&irqchip->irq_request_resources = gpiochip_irq_reqres;
+	*(void **)&irqchip->irq_release_resources = gpiochip_irq_relres;
+	pax_close_kernel();
 
 	/*
 	 * Prepare the mapping since the irqchip shall be orthogonal to
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index fe94cc1..5e697b3 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -3584,7 +3584,7 @@ int drm_mode_getproperty_ioctl(struct drm_device *dev,
 					goto done;
 				}
 
-				if (copy_to_user(&enum_ptr[copied].name,
+				if (copy_to_user(enum_ptr[copied].name,
 						 &prop_enum->name, DRM_PROP_NAME_LEN)) {
 					ret = -EFAULT;
 					goto done;
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 8218078..9960928a 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -233,7 +233,7 @@ module_exit(drm_core_exit);
 /**
  * Copy and IOCTL return string to user space
  */
-static int drm_copy_field(char *buf, size_t *buf_len, const char *value)
+static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value)
 {
 	int len;
 
@@ -342,7 +342,7 @@ long drm_ioctl(struct file *filp,
 	struct drm_file *file_priv = filp->private_data;
 	struct drm_device *dev;
 	const struct drm_ioctl_desc *ioctl = NULL;
-	drm_ioctl_t *func;
+	drm_ioctl_no_const_t func;
 	unsigned int nr = DRM_IOCTL_NR(cmd);
 	int retcode = -EINVAL;
 	char stack_kdata[128];
diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
index 021fe5d..abc9ce6 100644
--- a/drivers/gpu/drm/drm_fops.c
+++ b/drivers/gpu/drm/drm_fops.c
@@ -88,7 +88,7 @@ int drm_open(struct inode *inode, struct file *filp)
 		return PTR_ERR(minor);
 
 	dev = minor->dev;
-	if (!dev->open_count++)
+	if (local_inc_return(&dev->open_count) == 1)
 		need_setup = 1;
 
 	/* share address_space across all char-devs of a single device */
@@ -105,7 +105,7 @@ int drm_open(struct inode *inode, struct file *filp)
 	return 0;
 
 err_undo:
-	dev->open_count--;
+	local_dec(&dev->open_count);
 	drm_minor_release(minor);
 	return retcode;
 }
@@ -427,7 +427,7 @@ int drm_release(struct inode *inode, struct file *filp)
 
 	mutex_lock(&drm_global_mutex);
 
-	DRM_DEBUG("open_count = %d\n", dev->open_count);
+	DRM_DEBUG("open_count = %ld\n", local_read(&dev->open_count));
 
 	if (dev->driver->preclose)
 		dev->driver->preclose(dev, file_priv);
@@ -436,10 +436,10 @@ int drm_release(struct inode *inode, struct file *filp)
 	 * Begin inline drm_release
 	 */
 
-	DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
+	DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %ld\n",
 		  task_pid_nr(current),
 		  (long)old_encode_dev(file_priv->minor->kdev->devt),
-		  dev->open_count);
+		  local_read(&dev->open_count));
 
 	/* Release any auth tokens that might point to this file_priv,
 	   (do that under the drm_global_mutex) */
@@ -540,7 +540,7 @@ int drm_release(struct inode *inode, struct file *filp)
 	 * End inline drm_release
 	 */
 
-	if (!--dev->open_count) {
+	if (local_dec_and_test(&dev->open_count)) {
 		retcode = drm_lastclose(dev);
 		if (drm_device_is_unplugged(dev))
 			drm_put_dev(dev);
diff --git a/drivers/gpu/drm/drm_global.c b/drivers/gpu/drm/drm_global.c
index 3d2e91c..d31c4c9 100644
--- a/drivers/gpu/drm/drm_global.c
+++ b/drivers/gpu/drm/drm_global.c
@@ -36,7 +36,7 @@
 struct drm_global_item {
 	struct mutex mutex;
 	void *object;
-	int refcount;
+	atomic_t refcount;
 };
 
 static struct drm_global_item glob[DRM_GLOBAL_NUM];
@@ -49,7 +49,7 @@ void drm_global_init(void)
 		struct drm_global_item *item = &glob[i];
 		mutex_init(&item->mutex);
 		item->object = NULL;
-		item->refcount = 0;
+		atomic_set(&item->refcount, 0);
 	}
 }
 
@@ -59,7 +59,7 @@ void drm_global_release(void)
 	for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
 		struct drm_global_item *item = &glob[i];
 		BUG_ON(item->object != NULL);
-		BUG_ON(item->refcount != 0);
+		BUG_ON(atomic_read(&item->refcount) != 0);
 	}
 }
 
@@ -69,7 +69,7 @@ int drm_global_item_ref(struct drm_global_reference *ref)
 	struct drm_global_item *item = &glob[ref->global_type];
 
 	mutex_lock(&item->mutex);
-	if (item->refcount == 0) {
+	if (atomic_read(&item->refcount) == 0) {
 		item->object = kzalloc(ref->size, GFP_KERNEL);
 		if (unlikely(item->object == NULL)) {
 			ret = -ENOMEM;
@@ -82,7 +82,7 @@ int drm_global_item_ref(struct drm_global_reference *ref)
 			goto out_err;
 
 	}
-	++item->refcount;
+	atomic_inc(&item->refcount);
 	ref->object = item->object;
 	mutex_unlock(&item->mutex);
 	return 0;
@@ -98,9 +98,9 @@ void drm_global_item_unref(struct drm_global_reference *ref)
 	struct drm_global_item *item = &glob[ref->global_type];
 
 	mutex_lock(&item->mutex);
-	BUG_ON(item->refcount == 0);
+	BUG_ON(atomic_read(&item->refcount) == 0);
 	BUG_ON(ref->object != item->object);
-	if (--item->refcount == 0) {
+	if (atomic_dec_and_test(&item->refcount)) {
 		ref->release(ref);
 		item->object = NULL;
 	}
diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c
index 86feedd..cba70f5 100644
--- a/drivers/gpu/drm/drm_info.c
+++ b/drivers/gpu/drm/drm_info.c
@@ -73,10 +73,13 @@ int drm_vm_info(struct seq_file *m, void *data)
 	struct drm_local_map *map;
 	struct drm_map_list *r_list;
 
-	/* Hardcoded from _DRM_FRAME_BUFFER,
-	   _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
-	   _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
-	const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
+	static const char * const types[] = {
+		[_DRM_FRAME_BUFFER] = "FB",
+		[_DRM_REGISTERS] = "REG",
+		[_DRM_SHM] = "SHM",
+		[_DRM_AGP] = "AGP",
+		[_DRM_SCATTER_GATHER] = "SG",
+		[_DRM_CONSISTENT] = "PCI"};
 	const char *type;
 	int i;
 
@@ -87,7 +90,7 @@ int drm_vm_info(struct seq_file *m, void *data)
 		map = r_list->map;
 		if (!map)
 			continue;
-		if (map->type < 0 || map->type > 5)
+		if (map->type >= ARRAY_SIZE(types))
 			type = "??";
 		else
 			type = types[map->type];
@@ -259,7 +262,11 @@ int drm_vma_info(struct seq_file *m, void *data)
 			   vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
 			   vma->vm_flags & VM_LOCKED ? 'l' : '-',
 			   vma->vm_flags & VM_IO ? 'i' : '-',
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+			   0);
+#else
 			   vma->vm_pgoff);
+#endif
 
 #if defined(__i386__)
 		pgprot = pgprot_val(vma->vm_page_prot);
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 2f4c4343..dd12cd2 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -457,7 +457,7 @@ static int compat_drm_infobufs(struct file *file, unsigned int cmd,
 	request = compat_alloc_user_space(nbytes);
 	if (!access_ok(VERIFY_WRITE, request, nbytes))
 		return -EFAULT;
-	list = (struct drm_buf_desc *) (request + 1);
+	list = (struct drm_buf_desc __user *) (request + 1);
 
 	if (__put_user(count, &request->count)
 	    || __put_user(list, &request->list))
@@ -518,7 +518,7 @@ static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
 	request = compat_alloc_user_space(nbytes);
 	if (!access_ok(VERIFY_WRITE, request, nbytes))
 		return -EFAULT;
-	list = (struct drm_buf_pub *) (request + 1);
+	list = (struct drm_buf_pub __user *) (request + 1);
 
 	if (__put_user(count, &request->count)
 	    || __put_user(list, &request->list))
@@ -1016,7 +1016,7 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
 	return 0;
 }
 
-drm_ioctl_compat_t *drm_compat_ioctls[] = {
+drm_ioctl_compat_t drm_compat_ioctls[] = {
 	[DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
 	[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
 	[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
@@ -1062,7 +1062,6 @@ drm_ioctl_compat_t *drm_compat_ioctls[] = {
 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	unsigned int nr = DRM_IOCTL_NR(cmd);
-	drm_ioctl_compat_t *fn;
 	int ret;
 
 	/* Assume that ioctls without an explicit compat routine will just
@@ -1072,10 +1071,8 @@ long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 	if (nr >= ARRAY_SIZE(drm_compat_ioctls))
 		return drm_ioctl(filp, cmd, arg);
 
-	fn = drm_compat_ioctls[nr];
-
-	if (fn != NULL)
-		ret = (*fn) (filp, cmd, arg);
+	if (drm_compat_ioctls[nr] != NULL)
+		ret = (*drm_compat_ioctls[nr]) (filp, cmd, arg);
 	else
 		ret = drm_ioctl(filp, cmd, arg);
 
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 14d1646..99f9d49 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -455,7 +455,7 @@ void drm_unplug_dev(struct drm_device *dev)
 
 	drm_device_set_unplugged(dev);
 
-	if (dev->open_count == 0) {
+	if (local_read(&dev->open_count) == 0) {
 		drm_put_dev(dev);
 	}
 	mutex_unlock(&drm_global_mutex);
diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
index 369b262..09ea3ab 100644
--- a/drivers/gpu/drm/drm_sysfs.c
+++ b/drivers/gpu/drm/drm_sysfs.c
@@ -505,7 +505,7 @@ static void drm_sysfs_release(struct device *dev)
  */
 int drm_sysfs_device_add(struct drm_minor *minor)
 {
-	char *minor_str;
+	const char *minor_str;
 	int r;
 
 	if (minor->type == DRM_MINOR_CONTROL)
diff --git a/drivers/gpu/drm/i810/i810_drv.h b/drivers/gpu/drm/i810/i810_drv.h
index d4d16ed..8fb0b51 100644
--- a/drivers/gpu/drm/i810/i810_drv.h
+++ b/drivers/gpu/drm/i810/i810_drv.h
@@ -108,8 +108,8 @@ typedef struct drm_i810_private {
 	int page_flipping;
 
 	wait_queue_head_t irq_queue;
-	atomic_t irq_received;
-	atomic_t irq_emitted;
+	atomic_unchecked_t irq_received;
+	atomic_unchecked_t irq_emitted;
 
 	int front_offset;
 } drm_i810_private_t;
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index d443441..ab091dd 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1290,7 +1290,7 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
 	 * locking inversion with the driver load path. And the access here is
 	 * completely racy anyway. So don't bother with locking for now.
 	 */
-	return dev->open_count == 0;
+	return local_read(&dev->open_count) == 0;
 }
 
 static const struct vga_switcheroo_client_ops i915_switcheroo_ops = {
diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 3a30133..ef4a743 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -891,9 +891,9 @@ i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec)
 
 static int
 validate_exec_list(struct drm_i915_gem_exec_object2 *exec,
-		   int count)
+		   unsigned int count)
 {
-	int i;
+	unsigned int i;
 	unsigned relocs_total = 0;
 	unsigned relocs_max = UINT_MAX / sizeof(struct drm_i915_gem_relocation_entry);
 
diff --git a/drivers/gpu/drm/i915/i915_ioc32.c b/drivers/gpu/drm/i915/i915_ioc32.c
index 2e0613e..a8b94d9 100644
--- a/drivers/gpu/drm/i915/i915_ioc32.c
+++ b/drivers/gpu/drm/i915/i915_ioc32.c
@@ -181,7 +181,7 @@ static int compat_i915_alloc(struct file *file, unsigned int cmd,
 			 (unsigned long)request);
 }
 
-static drm_ioctl_compat_t *i915_compat_ioctls[] = {
+static drm_ioctl_compat_t i915_compat_ioctls[] = {
 	[DRM_I915_BATCHBUFFER] = compat_i915_batchbuffer,
 	[DRM_I915_CMDBUFFER] = compat_i915_cmdbuffer,
 	[DRM_I915_GETPARAM] = compat_i915_getparam,
@@ -202,18 +202,15 @@ static drm_ioctl_compat_t *i915_compat_ioctls[] = {
 long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	unsigned int nr = DRM_IOCTL_NR(cmd);
-	drm_ioctl_compat_t *fn = NULL;
 	int ret;
 
 	if (nr < DRM_COMMAND_BASE)
 		return drm_compat_ioctl(filp, cmd, arg);
 
-	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(i915_compat_ioctls))
-		fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE];
-
-	if (fn != NULL)
+	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(i915_compat_ioctls)) {
+		drm_ioctl_compat_t fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE];
 		ret = (*fn) (filp, cmd, arg);
-	else
+	} else
 		ret = drm_ioctl(filp, cmd, arg);
 
 	return ret;
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index f0be855..94e82d9 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11604,13 +11604,13 @@ struct intel_quirk {
 	int subsystem_vendor;
 	int subsystem_device;
 	void (*hook)(struct drm_device *dev);
-};
+} __do_const;
 
 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
 struct intel_dmi_quirk {
 	void (*hook)(struct drm_device *dev);
 	const struct dmi_system_id (*dmi_id_list)[];
-};
+} __do_const;
 
 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
 {
@@ -11618,18 +11618,20 @@ static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
 	return 1;
 }
 
-static const struct intel_dmi_quirk intel_dmi_quirks[] = {
+static const struct dmi_system_id intel_dmi_quirks_table[] = {
 	{
-		.dmi_id_list = &(const struct dmi_system_id[]) {
-			{
-				.callback = intel_dmi_reverse_brightness,
-				.ident = "NCR Corporation",
-				.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
-					    DMI_MATCH(DMI_PRODUCT_NAME, ""),
-				},
-			},
-			{ }  /* terminating entry */
+		.callback = intel_dmi_reverse_brightness,
+		.ident = "NCR Corporation",
+		.matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
+			    DMI_MATCH(DMI_PRODUCT_NAME, ""),
 		},
+	},
+	{ }  /* terminating entry */
+};
+
+static const struct intel_dmi_quirk intel_dmi_quirks[] = {
+	{
+		.dmi_id_list = &intel_dmi_quirks_table,
 		.hook = quirk_invert_brightness,
 	},
 };
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
index fe45321..836fdca 100644
--- a/drivers/gpu/drm/mga/mga_drv.h
+++ b/drivers/gpu/drm/mga/mga_drv.h
@@ -120,9 +120,9 @@ typedef struct drm_mga_private {
 	u32 clear_cmd;
 	u32 maccess;
 
-	atomic_t vbl_received;          /**< Number of vblanks received. */
+	atomic_unchecked_t vbl_received;          /**< Number of vblanks received. */
 	wait_queue_head_t fence_queue;
-	atomic_t last_fence_retired;
+	atomic_unchecked_t last_fence_retired;
 	u32 next_fence_to_post;
 
 	unsigned int fb_cpp;
diff --git a/drivers/gpu/drm/mga/mga_ioc32.c b/drivers/gpu/drm/mga/mga_ioc32.c
index 729bfd5..ead8823 100644
--- a/drivers/gpu/drm/mga/mga_ioc32.c
+++ b/drivers/gpu/drm/mga/mga_ioc32.c
@@ -190,7 +190,7 @@ static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd,
 	return 0;
 }
 
-drm_ioctl_compat_t *mga_compat_ioctls[] = {
+drm_ioctl_compat_t mga_compat_ioctls[] = {
 	[DRM_MGA_INIT] = compat_mga_init,
 	[DRM_MGA_GETPARAM] = compat_mga_getparam,
 	[DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap,
@@ -208,18 +208,15 @@ drm_ioctl_compat_t *mga_compat_ioctls[] = {
 long mga_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	unsigned int nr = DRM_IOCTL_NR(cmd);
-	drm_ioctl_compat_t *fn = NULL;
 	int ret;
 
 	if (nr < DRM_COMMAND_BASE)
 		return drm_compat_ioctl(filp, cmd, arg);
 
-	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(mga_compat_ioctls))
-		fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE];
-
-	if (fn != NULL)
+	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(mga_compat_ioctls)) {
+		drm_ioctl_compat_t fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE];
 		ret = (*fn) (filp, cmd, arg);
-	else
+	} else
 		ret = drm_ioctl(filp, cmd, arg);
 
 	return ret;
diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
index 1b071b8..de8601a 100644
--- a/drivers/gpu/drm/mga/mga_irq.c
+++ b/drivers/gpu/drm/mga/mga_irq.c
@@ -43,7 +43,7 @@ u32 mga_get_vblank_counter(struct drm_device *dev, int crtc)
 	if (crtc != 0)
 		return 0;
 
-	return atomic_read(&dev_priv->vbl_received);
+	return atomic_read_unchecked(&dev_priv->vbl_received);
 }
 
 
@@ -59,7 +59,7 @@ irqreturn_t mga_driver_irq_handler(int irq, void *arg)
 	/* VBLANK interrupt */
 	if (status & MGA_VLINEPEN) {
 		MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR);
-		atomic_inc(&dev_priv->vbl_received);
+		atomic_inc_unchecked(&dev_priv->vbl_received);
 		drm_handle_vblank(dev, 0);
 		handled = 1;
 	}
@@ -78,7 +78,7 @@ irqreturn_t mga_driver_irq_handler(int irq, void *arg)
 		if ((prim_start & ~0x03) != (prim_end & ~0x03))
 			MGA_WRITE(MGA_PRIMEND, prim_end);
 
-		atomic_inc(&dev_priv->last_fence_retired);
+		atomic_inc_unchecked(&dev_priv->last_fence_retired);
 		wake_up(&dev_priv->fence_queue);
 		handled = 1;
 	}
@@ -129,7 +129,7 @@ int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence)
 	 * using fences.
 	 */
 	DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * HZ,
-		    (((cur_fence = atomic_read(&dev_priv->last_fence_retired))
+		    (((cur_fence = atomic_read_unchecked(&dev_priv->last_fence_retired))
 		      - *sequence) <= (1 << 23)));
 
 	*sequence = cur_fence;
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 8268a4c..5105708 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -965,7 +965,7 @@ static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios,
 struct bit_table {
 	const char id;
 	int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *);
-};
+} __no_const;
 
 #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry })
 
diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.h b/drivers/gpu/drm/nouveau/nouveau_drm.h
index b628add..57cd489 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.h
@@ -99,7 +99,6 @@ struct nouveau_drm {
 		struct drm_global_reference mem_global_ref;
 		struct ttm_bo_global_ref bo_global_ref;
 		struct ttm_bo_device bdev;
-		atomic_t validate_sequence;
 		int (*move)(struct nouveau_channel *,
 			    struct ttm_buffer_object *,
 			    struct ttm_mem_reg *, struct ttm_mem_reg *);
diff --git a/drivers/gpu/drm/nouveau/nouveau_ioc32.c b/drivers/gpu/drm/nouveau/nouveau_ioc32.c
index 462679a..88e32a7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ioc32.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ioc32.c
@@ -50,7 +50,7 @@ long nouveau_compat_ioctl(struct file *filp, unsigned int cmd,
 			 unsigned long arg)
 {
 	unsigned int nr = DRM_IOCTL_NR(cmd);
-	drm_ioctl_compat_t *fn = NULL;
+	drm_ioctl_compat_t fn = NULL;
 	int ret;
 
 	if (nr < DRM_COMMAND_BASE)
diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index ab0228f..20b756b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -130,11 +130,11 @@ nouveau_vram_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 }
 
 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
-	nouveau_vram_manager_init,
-	nouveau_vram_manager_fini,
-	nouveau_vram_manager_new,
-	nouveau_vram_manager_del,
-	nouveau_vram_manager_debug
+	.init = nouveau_vram_manager_init,
+	.takedown = nouveau_vram_manager_fini,
+	.get_node = nouveau_vram_manager_new,
+	.put_node = nouveau_vram_manager_del,
+	.debug = nouveau_vram_manager_debug
 };
 
 static int
@@ -199,11 +199,11 @@ nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 }
 
 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
-	nouveau_gart_manager_init,
-	nouveau_gart_manager_fini,
-	nouveau_gart_manager_new,
-	nouveau_gart_manager_del,
-	nouveau_gart_manager_debug
+	.init = nouveau_gart_manager_init,
+	.takedown = nouveau_gart_manager_fini,
+	.get_node = nouveau_gart_manager_new,
+	.put_node = nouveau_gart_manager_del,
+	.debug = nouveau_gart_manager_debug
 };
 
 #include <core/subdev/vm/nv04.h>
@@ -271,11 +271,11 @@ nv04_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
 }
 
 const struct ttm_mem_type_manager_func nv04_gart_manager = {
-	nv04_gart_manager_init,
-	nv04_gart_manager_fini,
-	nv04_gart_manager_new,
-	nv04_gart_manager_del,
-	nv04_gart_manager_debug
+	.init = nv04_gart_manager_init,
+	.takedown = nv04_gart_manager_fini,
+	.get_node = nv04_gart_manager_new,
+	.put_node = nv04_gart_manager_del,
+	.debug = nv04_gart_manager_debug
 };
 
 int
diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c
index 4f4c3fe..2cce716 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
@@ -70,7 +70,7 @@ nouveau_switcheroo_can_switch(struct pci_dev *pdev)
 	 * locking inversion with the driver load path. And the access here is
 	 * completely racy anyway. So don't bother with locking for now.
 	 */
-	return dev->open_count == 0;
+	return local_read(&dev->open_count) == 0;
 }
 
 static const struct vga_switcheroo_client_ops
diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
index eb89653..613cf71 100644
--- a/drivers/gpu/drm/qxl/qxl_cmd.c
+++ b/drivers/gpu/drm/qxl/qxl_cmd.c
@@ -285,27 +285,27 @@ static int wait_for_io_cmd_user(struct qxl_device *qdev, uint8_t val, long port,
 	int ret;
 
 	mutex_lock(&qdev->async_io_mutex);
-	irq_num = atomic_read(&qdev->irq_received_io_cmd);
+	irq_num = atomic_read_unchecked(&qdev->irq_received_io_cmd);
 	if (qdev->last_sent_io_cmd > irq_num) {
 		if (intr)
 			ret = wait_event_interruptible_timeout(qdev->io_cmd_event,
-							       atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
+							       atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
 		else
 			ret = wait_event_timeout(qdev->io_cmd_event,
-						 atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
+						 atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
 		/* 0 is timeout, just bail the "hw" has gone away */
 		if (ret <= 0)
 			goto out;
-		irq_num = atomic_read(&qdev->irq_received_io_cmd);
+		irq_num = atomic_read_unchecked(&qdev->irq_received_io_cmd);
 	}
 	outb(val, addr);
 	qdev->last_sent_io_cmd = irq_num + 1;
 	if (intr)
 		ret = wait_event_interruptible_timeout(qdev->io_cmd_event,
-						       atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
+						       atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
 	else
 		ret = wait_event_timeout(qdev->io_cmd_event,
-					 atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
+					 atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
 out:
 	if (ret > 0)
 		ret = 0;
diff --git a/drivers/gpu/drm/qxl/qxl_debugfs.c b/drivers/gpu/drm/qxl/qxl_debugfs.c
index c3c2bbd..bc3c0fb 100644
--- a/drivers/gpu/drm/qxl/qxl_debugfs.c
+++ b/drivers/gpu/drm/qxl/qxl_debugfs.c
@@ -42,10 +42,10 @@ qxl_debugfs_irq_received(struct seq_file *m, void *data)
 	struct drm_info_node *node = (struct drm_info_node *) m->private;
 	struct qxl_device *qdev = node->minor->dev->dev_private;
 
-	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received));
-	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_display));
-	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_cursor));
-	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_io_cmd));
+	seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received));
+	seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received_display));
+	seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received_cursor));
+	seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received_io_cmd));
 	seq_printf(m, "%d\n", qdev->irq_received_error);
 	return 0;
 }
diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
index 36ed40b..0397633 100644
--- a/drivers/gpu/drm/qxl/qxl_drv.h
+++ b/drivers/gpu/drm/qxl/qxl_drv.h
@@ -290,10 +290,10 @@ struct qxl_device {
 	unsigned int last_sent_io_cmd;
 
 	/* interrupt handling */
-	atomic_t irq_received;
-	atomic_t irq_received_display;
-	atomic_t irq_received_cursor;
-	atomic_t irq_received_io_cmd;
+	atomic_unchecked_t irq_received;
+	atomic_unchecked_t irq_received_display;
+	atomic_unchecked_t irq_received_cursor;
+	atomic_unchecked_t irq_received_io_cmd;
 	unsigned irq_received_error;
 	wait_queue_head_t display_event;
 	wait_queue_head_t cursor_event;
diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
index b110883..dd06418 100644
--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
+++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
@@ -181,7 +181,7 @@ static int qxl_process_single_command(struct qxl_device *qdev,
 
 	/* TODO copy slow path code from i915 */
 	fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
-	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);
+	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);
 
 	{
 		struct qxl_drawable *draw = fb_cmd;
@@ -201,7 +201,7 @@ static int qxl_process_single_command(struct qxl_device *qdev,
 		struct drm_qxl_reloc reloc;
 
 		if (copy_from_user(&reloc,
-				       &((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i],
+				       &((struct drm_qxl_reloc __force_user *)(uintptr_t)cmd->relocs)[i],
 				       sizeof(reloc))) {
 			ret = -EFAULT;
 			goto out_free_bos;
@@ -294,10 +294,10 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
 
 	for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {
 
-		struct drm_qxl_command *commands =
-			(struct drm_qxl_command *)(uintptr_t)execbuffer->commands;
+		struct drm_qxl_command __user *commands =
+			(struct drm_qxl_command __user *)(uintptr_t)execbuffer->commands;
 
-		if (copy_from_user(&user_cmd, &commands[cmd_num],
+		if (copy_from_user(&user_cmd, (struct drm_qxl_command __force_user *)&commands[cmd_num],
 				       sizeof(user_cmd)))
 			return -EFAULT;
 
diff --git a/drivers/gpu/drm/qxl/qxl_irq.c b/drivers/gpu/drm/qxl/qxl_irq.c
index 0bf1e20..42a7310 100644
--- a/drivers/gpu/drm/qxl/qxl_irq.c
+++ b/drivers/gpu/drm/qxl/qxl_irq.c
@@ -36,19 +36,19 @@ irqreturn_t qxl_irq_handler(int irq, void *arg)
 	if (!pending)
 		return IRQ_NONE;
 
-	atomic_inc(&qdev->irq_received);
+	atomic_inc_unchecked(&qdev->irq_received);
 
 	if (pending & QXL_INTERRUPT_DISPLAY) {
-		atomic_inc(&qdev->irq_received_display);
+		atomic_inc_unchecked(&qdev->irq_received_display);
 		wake_up_all(&qdev->display_event);
 		qxl_queue_garbage_collect(qdev, false);
 	}
 	if (pending & QXL_INTERRUPT_CURSOR) {
-		atomic_inc(&qdev->irq_received_cursor);
+		atomic_inc_unchecked(&qdev->irq_received_cursor);
 		wake_up_all(&qdev->cursor_event);
 	}
 	if (pending & QXL_INTERRUPT_IO_CMD) {
-		atomic_inc(&qdev->irq_received_io_cmd);
+		atomic_inc_unchecked(&qdev->irq_received_io_cmd);
 		wake_up_all(&qdev->io_cmd_event);
 	}
 	if (pending & QXL_INTERRUPT_ERROR) {
@@ -85,10 +85,10 @@ int qxl_irq_init(struct qxl_device *qdev)
 	init_waitqueue_head(&qdev->io_cmd_event);
 	INIT_WORK(&qdev->client_monitors_config_work,
 		  qxl_client_monitors_config_work_func);
-	atomic_set(&qdev->irq_received, 0);
-	atomic_set(&qdev->irq_received_display, 0);
-	atomic_set(&qdev->irq_received_cursor, 0);
-	atomic_set(&qdev->irq_received_io_cmd, 0);
+	atomic_set_unchecked(&qdev->irq_received, 0);
+	atomic_set_unchecked(&qdev->irq_received_display, 0);
+	atomic_set_unchecked(&qdev->irq_received_cursor, 0);
+	atomic_set_unchecked(&qdev->irq_received_io_cmd, 0);
 	qdev->irq_received_error = 0;
 	ret = drm_irq_install(qdev->ddev, qdev->ddev->pdev->irq);
 	qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
index 71a1bae..cb1f103 100644
--- a/drivers/gpu/drm/qxl/qxl_ttm.c
+++ b/drivers/gpu/drm/qxl/qxl_ttm.c
@@ -103,7 +103,7 @@ static void qxl_ttm_global_fini(struct qxl_device *qdev)
 	}
 }
 
-static struct vm_operations_struct qxl_ttm_vm_ops;
+static vm_operations_struct_no_const qxl_ttm_vm_ops __read_only;
 static const struct vm_operations_struct *ttm_vm_ops;
 
 static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
@@ -145,8 +145,10 @@ int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
 		return r;
 	if (unlikely(ttm_vm_ops == NULL)) {
 		ttm_vm_ops = vma->vm_ops;
+		pax_open_kernel();
 		qxl_ttm_vm_ops = *ttm_vm_ops;
 		qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
+		pax_close_kernel();
 	}
 	vma->vm_ops = &qxl_ttm_vm_ops;
 	return 0;
@@ -555,25 +557,23 @@ static int qxl_mm_dump_table(struct seq_file *m, void *data)
 static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
 {
 #if defined(CONFIG_DEBUG_FS)
-	static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
-	static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
-	unsigned i;
+	static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES] = {
+		{
+			.name = "qxl_mem_mm",
+			.show = &qxl_mm_dump_table,
+		},
+		{
+			.name = "qxl_surf_mm",
+			.show = &qxl_mm_dump_table,
+		}
+	};
 
-	for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
-		if (i == 0)
-			sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
-		else
-			sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
-		qxl_mem_types_list[i].name = qxl_mem_types_names[i];
-		qxl_mem_types_list[i].show = &qxl_mm_dump_table;
-		qxl_mem_types_list[i].driver_features = 0;
-		if (i == 0)
-			qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
-		else
-			qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
+	pax_open_kernel();
+	*(void **)&qxl_mem_types_list[0].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
+	*(void **)&qxl_mem_types_list[1].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
+	pax_close_kernel();
 
-	}
-	return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
+	return qxl_debugfs_add_files(qdev, qxl_mem_types_list, QXL_DEBUGFS_MEM_TYPES);
 #else
 	return 0;
 #endif
diff --git a/drivers/gpu/drm/r128/r128_cce.c b/drivers/gpu/drm/r128/r128_cce.c
index 59459fe..be26b31 100644
--- a/drivers/gpu/drm/r128/r128_cce.c
+++ b/drivers/gpu/drm/r128/r128_cce.c
@@ -377,7 +377,7 @@ static int r128_do_init_cce(struct drm_device *dev, drm_r128_init_t *init)
 
 	/* GH: Simple idle check.
 	 */
-	atomic_set(&dev_priv->idle_count, 0);
+	atomic_set_unchecked(&dev_priv->idle_count, 0);
 
 	/* We don't support anything other than bus-mastering ring mode,
 	 * but the ring can be in either AGP or PCI space for the ring
diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h
index 5bf3f5f..7000661 100644
--- a/drivers/gpu/drm/r128/r128_drv.h
+++ b/drivers/gpu/drm/r128/r128_drv.h
@@ -90,14 +90,14 @@ typedef struct drm_r128_private {
 	int is_pci;
 	unsigned long cce_buffers_offset;
 
-	atomic_t idle_count;
+	atomic_unchecked_t idle_count;
 
 	int page_flipping;
 	int current_page;
 	u32 crtc_offset;
 	u32 crtc_offset_cntl;
 
-	atomic_t vbl_received;
+	atomic_unchecked_t vbl_received;
 
 	u32 color_fmt;
 	unsigned int front_offset;
diff --git a/drivers/gpu/drm/r128/r128_ioc32.c b/drivers/gpu/drm/r128/r128_ioc32.c
index 663f38c..c689495 100644
--- a/drivers/gpu/drm/r128/r128_ioc32.c
+++ b/drivers/gpu/drm/r128/r128_ioc32.c
@@ -178,7 +178,7 @@ static int compat_r128_getparam(struct file *file, unsigned int cmd,
 	return drm_ioctl(file, DRM_IOCTL_R128_GETPARAM, (unsigned long)getparam);
 }
 
-drm_ioctl_compat_t *r128_compat_ioctls[] = {
+drm_ioctl_compat_t r128_compat_ioctls[] = {
 	[DRM_R128_INIT] = compat_r128_init,
 	[DRM_R128_DEPTH] = compat_r128_depth,
 	[DRM_R128_STIPPLE] = compat_r128_stipple,
@@ -197,18 +197,15 @@ drm_ioctl_compat_t *r128_compat_ioctls[] = {
 long r128_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	unsigned int nr = DRM_IOCTL_NR(cmd);
-	drm_ioctl_compat_t *fn = NULL;
 	int ret;
 
 	if (nr < DRM_COMMAND_BASE)
 		return drm_compat_ioctl(filp, cmd, arg);
 
-	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(r128_compat_ioctls))
-		fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE];
-
-	if (fn != NULL)
+	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(r128_compat_ioctls)) {
+		drm_ioctl_compat_t fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE];
 		ret = (*fn) (filp, cmd, arg);
-	else
+	} else
 		ret = drm_ioctl(filp, cmd, arg);
 
 	return ret;
diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c
index c2ae496..30b5993 100644
--- a/drivers/gpu/drm/r128/r128_irq.c
+++ b/drivers/gpu/drm/r128/r128_irq.c
@@ -41,7 +41,7 @@ u32 r128_get_vblank_counter(struct drm_device *dev, int crtc)
 	if (crtc != 0)
 		return 0;
 
-	return atomic_read(&dev_priv->vbl_received);
+	return atomic_read_unchecked(&dev_priv->vbl_received);
 }
 
 irqreturn_t r128_driver_irq_handler(int irq, void *arg)
@@ -55,7 +55,7 @@ irqreturn_t r128_driver_irq_handler(int irq, void *arg)
 	/* VBLANK interrupt */
 	if (status & R128_CRTC_VBLANK_INT) {
 		R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
-		atomic_inc(&dev_priv->vbl_received);
+		atomic_inc_unchecked(&dev_priv->vbl_received);
 		drm_handle_vblank(dev, 0);
 		return IRQ_HANDLED;
 	}
diff --git a/drivers/gpu/drm/r128/r128_state.c b/drivers/gpu/drm/r128/r128_state.c
index 575e986..66e62ca 100644
--- a/drivers/gpu/drm/r128/r128_state.c
+++ b/drivers/gpu/drm/r128/r128_state.c
@@ -320,10 +320,10 @@ static void r128_clear_box(drm_r128_private_t *dev_priv,
 
 static void r128_cce_performance_boxes(drm_r128_private_t *dev_priv)
 {
-	if (atomic_read(&dev_priv->idle_count) == 0)
+	if (atomic_read_unchecked(&dev_priv->idle_count) == 0)
 		r128_clear_box(dev_priv, 64, 4, 8, 8, 0, 255, 0);
 	else
-		atomic_set(&dev_priv->idle_count, 0);
+		atomic_set_unchecked(&dev_priv->idle_count, 0);
 }
 
 #endif
diff --git a/drivers/gpu/drm/radeon/mkregtable.c b/drivers/gpu/drm/radeon/mkregtable.c
index 4a85bb6..aaea819 100644
--- a/drivers/gpu/drm/radeon/mkregtable.c
+++ b/drivers/gpu/drm/radeon/mkregtable.c
@@ -624,14 +624,14 @@ static int parser_auth(struct table *t, const char *filename)
 	regex_t mask_rex;
 	regmatch_t match[4];
 	char buf[1024];
-	size_t end;
+	long end;
 	int len;
 	int done = 0;
 	int r;
 	unsigned o;
 	struct offset *offset;
 	char last_reg_s[10];
-	int last_reg;
+	unsigned long last_reg;
 
 	if (regcomp
 	    (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) {
diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
index 697add2..9860f5b 100644
--- a/drivers/gpu/drm/radeon/radeon_device.c
+++ b/drivers/gpu/drm/radeon/radeon_device.c
@@ -1169,7 +1169,7 @@ static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
 	 * locking inversion with the driver load path. And the access here is
 	 * completely racy anyway. So don't bother with locking for now.
 	 */
-	return dev->open_count == 0;
+	return local_read(&dev->open_count) == 0;
 }
 
 static const struct vga_switcheroo_client_ops radeon_switcheroo_ops = {
diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
index dafd812..1bf20c7 100644
--- a/drivers/gpu/drm/radeon/radeon_drv.h
+++ b/drivers/gpu/drm/radeon/radeon_drv.h
@@ -262,7 +262,7 @@ typedef struct drm_radeon_private {
 
 	/* SW interrupt */
 	wait_queue_head_t swi_queue;
-	atomic_t swi_emitted;
+	atomic_unchecked_t swi_emitted;
 	int vblank_crtc;
 	uint32_t irq_enable_reg;
 	uint32_t r500_disp_irq_reg;
diff --git a/drivers/gpu/drm/radeon/radeon_ioc32.c b/drivers/gpu/drm/radeon/radeon_ioc32.c
index 0b98ea1..0881827 100644
--- a/drivers/gpu/drm/radeon/radeon_ioc32.c
+++ b/drivers/gpu/drm/radeon/radeon_ioc32.c
@@ -358,7 +358,7 @@ static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
 	request = compat_alloc_user_space(sizeof(*request));
 	if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
 	    || __put_user(req32.param, &request->param)
-	    || __put_user((void __user *)(unsigned long)req32.value,
+	    || __put_user((unsigned long)req32.value,
 			  &request->value))
 		return -EFAULT;
 
@@ -368,7 +368,7 @@ static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
 #define compat_radeon_cp_setparam NULL
 #endif /* X86_64 || IA64 */
 
-static drm_ioctl_compat_t *radeon_compat_ioctls[] = {
+static drm_ioctl_compat_t radeon_compat_ioctls[] = {
 	[DRM_RADEON_CP_INIT] = compat_radeon_cp_init,
 	[DRM_RADEON_CLEAR] = compat_radeon_cp_clear,
 	[DRM_RADEON_STIPPLE] = compat_radeon_cp_stipple,
@@ -393,18 +393,15 @@ static drm_ioctl_compat_t *radeon_compat_ioctls[] = {
 long radeon_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
 	unsigned int nr = DRM_IOCTL_NR(cmd);
-	drm_ioctl_compat_t *fn = NULL;
 	int ret;
 
 	if (nr < DRM_COMMAND_BASE)
 		return drm_compat_ioctl(filp, cmd, arg);
 
-	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(radeon_compat_ioctls))
-		fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
-
-	if (fn != NULL)
+	if (nr < DRM_COMMAND_BASE + ARRAY_SIZE(radeon_compat_ioctls)) {
+		drm_ioctl_compat_t fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
 		ret = (*fn) (filp, cmd, arg);
-	else
+	} else
 		ret = drm_ioctl(filp, cmd, arg);
 
 	return ret;
diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c
index 244b19b..c19226d 100644
--- a/drivers/gpu/drm/radeon/radeon_irq.c
+++ b/drivers/gpu/drm/radeon/radeon_irq.c
@@ -226,8 +226,8 @@ static int radeon_emit_irq(struct drm_device * dev)
 	unsigned int ret;
 	RING_LOCALS;
 
-	atomic_inc(&dev_priv->swi_emitted);
-	ret = atomic_read(&dev_priv->swi_emitted);
+	atomic_inc_unchecked(&dev_priv->swi_emitted);
+	ret = atomic_read_unchecked(&dev_priv->swi_emitted);
 
 	BEGIN_RING(4);
 	OUT_RING_REG(RADEON_LAST_SWI_REG, ret);
@@ -353,7 +353,7 @@ int radeon_driver_irq_postinstall(struct drm_device *dev)
 	drm_radeon_private_t *dev_priv =
 	    (drm_radeon_private_t *) dev->dev_private;
 
-	atomic_set(&dev_priv->swi_emitted, 0);
+	atomic_set_unchecked(&dev_priv->swi_emitted, 0);
 	init_waitqueue_head(&dev_priv->swi_queue);
 
 	dev->max_vblank_count = 0x001fffff;
diff --git a/drivers/gpu/drm/radeon/radeon_state.c b/drivers/gpu/drm/radeon/radeon_state.c
index 23bb64f..69d7234 100644
--- a/drivers/gpu/drm/radeon/radeon_state.c
+++ b/drivers/gpu/drm/radeon/radeon_state.c
@@ -2168,7 +2168,7 @@ static int radeon_cp_clear(struct drm_device *dev, void *data, struct drm_file *
 	if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS)
 		sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS;
 
-	if (copy_from_user(&depth_boxes, clear->depth_boxes,
+	if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS || copy_from_user(&depth_boxes, clear->depth_boxes,
 			       sarea_priv->nbox * sizeof(depth_boxes[0])))
 		return -EFAULT;
 
@@ -3031,7 +3031,7 @@ static int radeon_cp_getparam(struct drm_device *dev, void *data, struct drm_fil
 {
 	drm_radeon_private_t *dev_priv = dev->dev_private;
 	drm_radeon_getparam_t *param = data;
-	int value;
+	int value = 0;
 
 	DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);
 
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index c8a8a51..219dacc 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -797,7 +797,7 @@ void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
 	man->size = size >> PAGE_SHIFT;
 }
 
-static struct vm_operations_struct radeon_ttm_vm_ops;
+static vm_operations_struct_no_const radeon_ttm_vm_ops __read_only;
 static const struct vm_operations_struct *ttm_vm_ops = NULL;
 
 static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
@@ -838,8 +838,10 @@ int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
 	}
 	if (unlikely(ttm_vm_ops == NULL)) {
 		ttm_vm_ops = vma->vm_ops;
+		pax_open_kernel();
 		radeon_ttm_vm_ops = *ttm_vm_ops;
 		radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
+		pax_close_kernel();
 	}
 	vma->vm_ops = &radeon_ttm_vm_ops;
 	return 0;
diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index ef40381..347463e 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -1173,7 +1173,7 @@ static int tegra_dc_debugfs_init(struct tegra_dc *dc, struct drm_minor *minor)
 	}
 
 	for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
-		dc->debugfs_files[i].data = dc;
+		*(void **)&dc->debugfs_files[i].data = dc;
 
 	err = drm_debugfs_create_files(dc->debugfs_files,
 				       ARRAY_SIZE(debugfs_files),
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index bd56f2a..255af4b 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -41,7 +41,7 @@ struct tegra_dsi {
 	struct clk *clk_lp;
 	struct clk *clk;
 
-	struct drm_info_list *debugfs_files;
+	drm_info_list_no_const *debugfs_files;
 	struct drm_minor *minor;
 	struct dentry *debugfs;
 
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index ba067bb..23afbbd 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -60,7 +60,7 @@ struct tegra_hdmi {
 	bool stereo;
 	bool dvi;
 
-	struct drm_info_list *debugfs_files;
+	drm_info_list_no_const *debugfs_files;
 	struct drm_minor *minor;
 	struct dentry *debugfs;
 };
diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c
index bd850c9..d9f3573 100644
--- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
+++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
@@ -146,10 +146,10 @@ static void ttm_bo_man_debug(struct ttm_mem_type_manager *man,
 }
 
 const struct ttm_mem_type_manager_func ttm_bo_manager_func = {
-	ttm_bo_man_init,
-	ttm_bo_man_takedown,
-	ttm_bo_man_get_node,
-	ttm_bo_man_put_node,
-	ttm_bo_man_debug
+	.init = ttm_bo_man_init,
+	.takedown = ttm_bo_man_takedown,
+	.get_node = ttm_bo_man_get_node,
+	.put_node = ttm_bo_man_put_node,
+	.debug = ttm_bo_man_debug
 };
 EXPORT_SYMBOL(ttm_bo_manager_func);
diff --git a/drivers/gpu/drm/ttm/ttm_memory.c b/drivers/gpu/drm/ttm/ttm_memory.c
index dbc2def..0a9f710 100644
--- a/drivers/gpu/drm/ttm/ttm_memory.c
+++ b/drivers/gpu/drm/ttm/ttm_memory.c
@@ -264,7 +264,7 @@ static int ttm_mem_init_kernel_zone(struct ttm_mem_global *glob,
 	zone->glob = glob;
 	glob->zone_kernel = zone;
 	ret = kobject_init_and_add(
-		&zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, zone->name);
+		&zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, "%s", zone->name);
 	if (unlikely(ret != 0)) {
 		kobject_put(&zone->kobj);
 		return ret;
@@ -347,7 +347,7 @@ static int ttm_mem_init_dma32_zone(struct ttm_mem_global *glob,
 	zone->glob = glob;
 	glob->zone_dma32 = zone;
 	ret = kobject_init_and_add(
-		&zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, zone->name);
+		&zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, "%s", zone->name);
 	if (unlikely(ret != 0)) {
 		kobject_put(&zone->kobj);
 		return ret;
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index 863bef9..cba15cf 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -391,9 +391,9 @@ out:
 static unsigned long
 ttm_pool_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
 {
-	static atomic_t start_pool = ATOMIC_INIT(0);
+	static atomic_unchecked_t start_pool = ATOMIC_INIT(0);
 	unsigned i;
-	unsigned pool_offset = atomic_add_return(1, &start_pool);
+	unsigned pool_offset = atomic_add_return_unchecked(1, &start_pool);
 	struct ttm_page_pool *pool;
 	int shrink_pages = sc->nr_to_scan;
 	unsigned long freed = 0;
diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
index 3771763..883f206 100644
--- a/drivers/gpu/drm/udl/udl_fb.c
+++ b/drivers/gpu/drm/udl/udl_fb.c
@@ -367,7 +367,6 @@ static int udl_fb_release(struct fb_info *info, int user)
 		fb_deferred_io_cleanup(info);
 		kfree(info->fbdefio);
 		info->fbdefio = NULL;
-		info->fbops->fb_mmap = udl_fb_mmap;
 	}
 
 	pr_warn("released /dev/fb%d user=%d count=%d\n",
diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h
index ad02732..144f5ed 100644
--- a/drivers/gpu/drm/via/via_drv.h
+++ b/drivers/gpu/drm/via/via_drv.h
@@ -51,7 +51,7 @@ typedef struct drm_via_ring_buffer {
 typedef uint32_t maskarray_t[5];
 
 typedef struct drm_via_irq {
-	atomic_t irq_received;
+	atomic_unchecked_t irq_received;
 	uint32_t pending_mask;
 	uint32_t enable_mask;
 	wait_queue_head_t irq_queue;
@@ -75,7 +75,7 @@ typedef struct drm_via_private {
 	struct timeval last_vblank;
 	int last_vblank_valid;
 	unsigned usec_per_vblank;
-	atomic_t vbl_received;
+	atomic_unchecked_t vbl_received;
 	drm_via_state_t hc_state;
 	char pci_buf[VIA_PCI_BUF_SIZE];
 	const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
index 1319433..a993b0c 100644
--- a/drivers/gpu/drm/via/via_irq.c
+++ b/drivers/gpu/drm/via/via_irq.c
@@ -101,7 +101,7 @@ u32 via_get_vblank_counter(struct drm_device *dev, int crtc)
 	if (crtc != 0)
 		return 0;
 
-	return atomic_read(&dev_priv->vbl_received);
+	return atomic_read_unchecked(&dev_priv->vbl_received);
 }
 
 irqreturn_t via_driver_irq_handler(int irq, void *arg)
@@ -116,8 +116,8 @@ irqreturn_t via_driver_irq_handler(int irq, void *arg)
 
 	status = VIA_READ(VIA_REG_INTERRUPT);
 	if (status & VIA_IRQ_VBLANK_PENDING) {
-		atomic_inc(&dev_priv->vbl_received);
-		if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) {
+		atomic_inc_unchecked(&dev_priv->vbl_received);
+		if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0x0F)) {
 			do_gettimeofday(&cur_vblank);
 			if (dev_priv->last_vblank_valid) {
 				dev_priv->usec_per_vblank =
@@ -127,7 +127,7 @@ irqreturn_t via_driver_irq_handler(int irq, void *arg)
 			dev_priv->last_vblank = cur_vblank;
 			dev_priv->last_vblank_valid = 1;
 		}
-		if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) {
+		if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0xFF)) {
 			DRM_DEBUG("US per vblank is: %u\n",
 				  dev_priv->usec_per_vblank);
 		}
@@ -137,7 +137,7 @@ irqreturn_t via_driver_irq_handler(int irq, void *arg)
 
 	for (i = 0; i < dev_priv->num_irqs; ++i) {
 		if (status & cur_irq->pending_mask) {
-			atomic_inc(&cur_irq->irq_received);
+			atomic_inc_unchecked(&cur_irq->irq_received);
 			wake_up(&cur_irq->irq_queue);
 			handled = 1;
 			if (dev_priv->irq_map[drm_via_irq_dma0_td] == i)
@@ -242,11 +242,11 @@ via_driver_irq_wait(struct drm_device *dev, unsigned int irq, int force_sequence
 		DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * HZ,
 			    ((VIA_READ(masks[irq][2]) & masks[irq][3]) ==
 			     masks[irq][4]));
-		cur_irq_sequence = atomic_read(&cur_irq->irq_received);
+		cur_irq_sequence = atomic_read_unchecked(&cur_irq->irq_received);
 	} else {
 		DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * HZ,
 			    (((cur_irq_sequence =
-			       atomic_read(&cur_irq->irq_received)) -
+			       atomic_read_unchecked(&cur_irq->irq_received)) -
 			      *sequence) <= (1 << 23)));
 	}
 	*sequence = cur_irq_sequence;
@@ -284,7 +284,7 @@ void via_driver_irq_preinstall(struct drm_device *dev)
 		}
 
 		for (i = 0; i < dev_priv->num_irqs; ++i) {
-			atomic_set(&cur_irq->irq_received, 0);
+			atomic_set_unchecked(&cur_irq->irq_received, 0);
 			cur_irq->enable_mask = dev_priv->irq_masks[i][0];
 			cur_irq->pending_mask = dev_priv->irq_masks[i][1];
 			init_waitqueue_head(&cur_irq->irq_queue);
@@ -366,7 +366,7 @@ int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv)
 	switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) {
 	case VIA_IRQ_RELATIVE:
 		irqwait->request.sequence +=
-			atomic_read(&cur_irq->irq_received);
+			atomic_read_unchecked(&cur_irq->irq_received);
 		irqwait->request.type &= ~_DRM_VBLANK_RELATIVE;
 	case VIA_IRQ_ABSOLUTE:
 		break;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
index 6b252a8..5975dfe 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
@@ -437,7 +437,7 @@ struct vmw_private {
 	 * Fencing and IRQs.
 	 */
 
-	atomic_t marker_seq;
+	atomic_unchecked_t marker_seq;
 	wait_queue_head_t fence_queue;
 	wait_queue_head_t fifo_queue;
 	int fence_queue_waiters; /* Protected by hw_mutex */
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
index 6ccd993..618d592 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
@@ -154,7 +154,7 @@ int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
 		 (unsigned int) min,
 		 (unsigned int) fifo->capabilities);
 
-	atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno);
+	atomic_set_unchecked(&dev_priv->marker_seq, dev_priv->last_read_seqno);
 	iowrite32(dev_priv->last_read_seqno, fifo_mem + SVGA_FIFO_FENCE);
 	vmw_marker_queue_init(&fifo->marker_queue);
 	return vmw_fifo_send_fence(dev_priv, &dummy);
@@ -372,7 +372,7 @@ void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes)
 				if (reserveable)
 					iowrite32(bytes, fifo_mem +
 						  SVGA_FIFO_RESERVED);
-				return fifo_mem + (next_cmd >> 2);
+				return (__le32 __force_kernel *)fifo_mem + (next_cmd >> 2);
 			} else {
 				need_bounce = true;
 			}
@@ -492,7 +492,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno)
 
 	fm = vmw_fifo_reserve(dev_priv, bytes);
 	if (unlikely(fm == NULL)) {
-		*seqno = atomic_read(&dev_priv->marker_seq);
+		*seqno = atomic_read_unchecked(&dev_priv->marker_seq);
 		ret = -ENOMEM;
 		(void)vmw_fallback_wait(dev_priv, false, true, *seqno,
 					false, 3*HZ);
@@ -500,7 +500,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno)
 	}
 
 	do {
-		*seqno = atomic_add_return(1, &dev_priv->marker_seq);
+		*seqno = atomic_add_return_unchecked(1, &dev_priv->marker_seq);
 	} while (*seqno == 0);
 
 	if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE)) {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
index b1273e8..9c274fd 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
@@ -164,9 +164,9 @@ static void vmw_gmrid_man_debug(struct ttm_mem_type_manager *man,
 }
 
 const struct ttm_mem_type_manager_func vmw_gmrid_manager_func = {
-	vmw_gmrid_man_init,
-	vmw_gmrid_man_takedown,
-	vmw_gmrid_man_get_node,
-	vmw_gmrid_man_put_node,
-	vmw_gmrid_man_debug
+	.init = vmw_gmrid_man_init,
+	.takedown = vmw_gmrid_man_takedown,
+	.get_node = vmw_gmrid_man_get_node,
+	.put_node = vmw_gmrid_man_put_node,
+	.debug = vmw_gmrid_man_debug
 };
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 37881ec..319065d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -235,7 +235,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
 	int ret;
 
 	num_clips = arg->num_clips;
-	clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
+	clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 
 	if (unlikely(num_clips == 0))
 		return 0;
@@ -318,7 +318,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 	int ret;
 
 	num_clips = arg->num_clips;
-	clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
+	clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
 
 	if (unlikely(num_clips == 0))
 		return 0;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
index 0c42376..6febe77 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
@@ -107,7 +107,7 @@ bool vmw_seqno_passed(struct vmw_private *dev_priv,
 	 * emitted. Then the fence is stale and signaled.
 	 */
 
-	ret = ((atomic_read(&dev_priv->marker_seq) - seqno)
+	ret = ((atomic_read_unchecked(&dev_priv->marker_seq) - seqno)
 	       > VMW_FENCE_WRAP);
 
 	return ret;
@@ -138,7 +138,7 @@ int vmw_fallback_wait(struct vmw_private *dev_priv,
 
 	if (fifo_idle)
 		down_read(&fifo_state->rwsem);
-	signal_seq = atomic_read(&dev_priv->marker_seq);
+	signal_seq = atomic_read_unchecked(&dev_priv->marker_seq);
 	ret = 0;
 
 	for (;;) {
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
index 8a8725c2..afed796 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
@@ -151,7 +151,7 @@ int vmw_wait_lag(struct vmw_private *dev_priv,
 	while (!vmw_lag_lt(queue, us)) {
 		spin_lock(&queue->lock);
 		if (list_empty(&queue->head))
-			seqno = atomic_read(&dev_priv->marker_seq);
+			seqno = atomic_read_unchecked(&dev_priv->marker_seq);
 		else {
 			marker = list_first_entry(&queue->head,
 						 struct vmw_marker, head);
diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
index 6866448..2ad2b34 100644
--- a/drivers/gpu/vga/vga_switcheroo.c
+++ b/drivers/gpu/vga/vga_switcheroo.c
@@ -644,7 +644,7 @@ static int vga_switcheroo_runtime_resume(struct device *dev)
 
 /* this version is for the case where the power switch is separate
    to the device being powered down. */
-int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain)
+int vga_switcheroo_init_domain_pm_ops(struct device *dev, dev_pm_domain_no_const *domain)
 {
 	/* copy over all the bus versions */
 	if (dev->bus && dev->bus->pm) {
@@ -689,7 +689,7 @@ static int vga_switcheroo_runtime_resume_hdmi_audio(struct device *dev)
 	return ret;
 }
 
-int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain)
+int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, dev_pm_domain_no_const *domain)
 {
 	/* copy over all the bus versions */
 	if (dev->bus && dev->bus->pm) {
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 8ed66fd..38ff772 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2488,7 +2488,7 @@ EXPORT_SYMBOL_GPL(hid_ignore);
 
 int hid_add_device(struct hid_device *hdev)
 {
-	static atomic_t id = ATOMIC_INIT(0);
+	static atomic_unchecked_t id = ATOMIC_INIT(0);
 	int ret;
 
 	if (WARN_ON(hdev->status & HID_STAT_ADDED))
@@ -2530,7 +2530,7 @@ int hid_add_device(struct hid_device *hdev)
 	/* XXX hack, any other cleaner solution after the driver core
 	 * is converted to allow more than 20 bytes as the device name? */
 	dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
-		     hdev->vendor, hdev->product, atomic_inc_return(&id));
+		     hdev->vendor, hdev->product, atomic_inc_return_unchecked(&id));
 
 	hid_debug_register(hdev, dev_name(&hdev->dev));
 	ret = device_add(&hdev->dev);
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index ecc2cbf..29a74c1 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -290,6 +290,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
 		if (size < 4 || ((size - 4) % 9) != 0)
 			return 0;
 		npoints = (size - 4) / 9;
+		if (npoints > 15) {
+			hid_warn(hdev, "invalid size value (%d) for TRACKPAD_REPORT_ID\n",
+					size);
+			return 0;
+		}
 		msc->ntouches = 0;
 		for (ii = 0; ii < npoints; ii++)
 			magicmouse_emit_touch(msc, ii, data + ii * 9 + 4);
@@ -307,6 +312,11 @@ static int magicmouse_raw_event(struct hid_device *hdev,
 		if (size < 6 || ((size - 6) % 8) != 0)
 			return 0;
 		npoints = (size - 6) / 8;
+		if (npoints > 15) {
+			hid_warn(hdev, "invalid size value (%d) for MOUSE_REPORT_ID\n",
+					size);
+			return 0;
+		}
 		msc->ntouches = 0;
 		for (ii = 0; ii < npoints; ii++)
 			magicmouse_emit_touch(msc, ii, data + ii * 8 + 6);
diff --git a/drivers/hid/hid-picolcd_core.c b/drivers/hid/hid-picolcd_core.c
index acbb0210..020df3c 100644
--- a/drivers/hid/hid-picolcd_core.c
+++ b/drivers/hid/hid-picolcd_core.c
@@ -350,6 +350,12 @@ static int picolcd_raw_event(struct hid_device *hdev,
 	if (!data)
 		return 1;
 
+	if (size > 64) {
+		hid_warn(hdev, "invalid size value (%d) for picolcd raw event\n",
+				size);
+		return 0;
+	}
+
 	if (report->id == REPORT_KEY_STATE) {
 		if (data->input_keys)
 			ret = picolcd_raw_keypad(data, report, raw_data+1, size-1);
diff --git a/drivers/hid/hid-wiimote-debug.c b/drivers/hid/hid-wiimote-debug.c
index c13fb5b..55a3802 100644
--- a/drivers/hid/hid-wiimote-debug.c
+++ b/drivers/hid/hid-wiimote-debug.c
@@ -66,7 +66,7 @@ static ssize_t wiidebug_eeprom_read(struct file *f, char __user *u, size_t s,
 	else if (size == 0)
 		return -EIO;
 
-	if (copy_to_user(u, buf, size))
+	if (size > sizeof(buf) || copy_to_user(u, buf, size))
 		return -EFAULT;
 
 	*off += size;
diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
index 0cb92e3..c7d453d 100644
--- a/drivers/hid/uhid.c
+++ b/drivers/hid/uhid.c
@@ -47,7 +47,7 @@ struct uhid_device {
 	struct mutex report_lock;
 	wait_queue_head_t report_wait;
 	atomic_t report_done;
-	atomic_t report_id;
+	atomic_unchecked_t report_id;
 	struct uhid_event report_buf;
 };
 
@@ -163,7 +163,7 @@ static int uhid_hid_get_raw(struct hid_device *hid, unsigned char rnum,
 
 	spin_lock_irqsave(&uhid->qlock, flags);
 	ev->type = UHID_FEATURE;
-	ev->u.feature.id = atomic_inc_return(&uhid->report_id);
+	ev->u.feature.id = atomic_inc_return_unchecked(&uhid->report_id);
 	ev->u.feature.rnum = rnum;
 	ev->u.feature.rtype = report_type;
 
@@ -538,7 +538,7 @@ static int uhid_dev_feature_answer(struct uhid_device *uhid,
 	spin_lock_irqsave(&uhid->qlock, flags);
 
 	/* id for old report; drop it silently */
-	if (atomic_read(&uhid->report_id) != ev->u.feature_answer.id)
+	if (atomic_read_unchecked(&uhid->report_id) != ev->u.feature_answer.id)
 		goto unlock;
 	if (atomic_read(&uhid->report_done))
 		goto unlock;
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 284cf66..084c627 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv/channel.c
@@ -365,8 +365,8 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer,
 	int ret = 0;
 	int t;
 
-	next_gpadl_handle = atomic_read(&vmbus_connection.next_gpadl_handle);
-	atomic_inc(&vmbus_connection.next_gpadl_handle);
+	next_gpadl_handle = atomic_read_unchecked(&vmbus_connection.next_gpadl_handle);
+	atomic_inc_unchecked(&vmbus_connection.next_gpadl_handle);
 
 	ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount);
 	if (ret)
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index edfc848..d83e195 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -112,7 +112,7 @@ static u64 do_hypercall(u64 control, void *input, void *output)
 	u64 output_address = (output) ? virt_to_phys(output) : 0;
 	u32 output_address_hi = output_address >> 32;
 	u32 output_address_lo = output_address & 0xFFFFFFFF;
-	void *hypercall_page = hv_context.hypercall_page;
+	void *hypercall_page = ktva_ktla(hv_context.hypercall_page);
 
 	__asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi),
 			      "=a"(hv_status_lo) : "d" (control_hi),
@@ -154,7 +154,7 @@ int hv_init(void)
 	/* See if the hypercall page is already set */
 	rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
 
-	virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_EXEC);
+	virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_RX);
 
 	if (!virtaddr)
 		goto cleanup;
diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
index 5e90c5d..d8fcefb 100644
--- a/drivers/hv/hv_balloon.c
+++ b/drivers/hv/hv_balloon.c
@@ -470,7 +470,7 @@ MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
 
 module_param(pressure_report_delay, uint, (S_IRUGO | S_IWUSR));
 MODULE_PARM_DESC(pressure_report_delay, "Delay in secs in reporting pressure");
-static atomic_t trans_id = ATOMIC_INIT(0);
+static atomic_unchecked_t trans_id = ATOMIC_INIT(0);
 
 static int dm_ring_size = (5 * PAGE_SIZE);
 
@@ -893,7 +893,7 @@ static void hot_add_req(struct work_struct *dummy)
 		pr_info("Memory hot add failed\n");
 
 	dm->state = DM_INITIALIZED;
-	resp.hdr.trans_id = atomic_inc_return(&trans_id);
+	resp.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 	vmbus_sendpacket(dm->dev->channel, &resp,
 			sizeof(struct dm_hot_add_response),
 			(unsigned long)NULL,
@@ -973,7 +973,7 @@ static void post_status(struct hv_dynmem_device *dm)
 	memset(&status, 0, sizeof(struct dm_status));
 	status.hdr.type = DM_STATUS_REPORT;
 	status.hdr.size = sizeof(struct dm_status);
-	status.hdr.trans_id = atomic_inc_return(&trans_id);
+	status.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 
 	/*
 	 * The host expects the guest to report free memory.
@@ -993,7 +993,7 @@ static void post_status(struct hv_dynmem_device *dm)
 	 * send the status. This can happen if we were interrupted
 	 * after we picked our transaction ID.
 	 */
-	if (status.hdr.trans_id != atomic_read(&trans_id))
+	if (status.hdr.trans_id != atomic_read_unchecked(&trans_id))
 		return;
 
 	/*
@@ -1129,7 +1129,7 @@ static void balloon_up(struct work_struct *dummy)
 		 */
 
 		do {
-			bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);
+			bl_resp->hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 			ret = vmbus_sendpacket(dm_device.dev->channel,
 						bl_resp,
 						bl_resp->hdr.size,
@@ -1175,7 +1175,7 @@ static void balloon_down(struct hv_dynmem_device *dm,
 
 	memset(&resp, 0, sizeof(struct dm_unballoon_response));
 	resp.hdr.type = DM_UNBALLOON_RESPONSE;
-	resp.hdr.trans_id = atomic_inc_return(&trans_id);
+	resp.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 	resp.hdr.size = sizeof(struct dm_unballoon_response);
 
 	vmbus_sendpacket(dm_device.dev->channel, &resp,
@@ -1239,7 +1239,7 @@ static void version_resp(struct hv_dynmem_device *dm,
 	memset(&version_req, 0, sizeof(struct dm_version_request));
 	version_req.hdr.type = DM_VERSION_REQUEST;
 	version_req.hdr.size = sizeof(struct dm_version_request);
-	version_req.hdr.trans_id = atomic_inc_return(&trans_id);
+	version_req.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 	version_req.version.version = DYNMEM_PROTOCOL_VERSION_WIN7;
 	version_req.is_last_attempt = 1;
 
@@ -1409,7 +1409,7 @@ static int balloon_probe(struct hv_device *dev,
 	memset(&version_req, 0, sizeof(struct dm_version_request));
 	version_req.hdr.type = DM_VERSION_REQUEST;
 	version_req.hdr.size = sizeof(struct dm_version_request);
-	version_req.hdr.trans_id = atomic_inc_return(&trans_id);
+	version_req.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 	version_req.version.version = DYNMEM_PROTOCOL_VERSION_WIN8;
 	version_req.is_last_attempt = 0;
 
@@ -1440,7 +1440,7 @@ static int balloon_probe(struct hv_device *dev,
 	memset(&cap_msg, 0, sizeof(struct dm_capabilities));
 	cap_msg.hdr.type = DM_CAPABILITIES_REPORT;
 	cap_msg.hdr.size = sizeof(struct dm_capabilities);
-	cap_msg.hdr.trans_id = atomic_inc_return(&trans_id);
+	cap_msg.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
 
 	cap_msg.caps.cap_bits.balloon = 1;
 	cap_msg.caps.cap_bits.hot_add = 1;
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index 22b7507..fc2fc47 100644
--- a/drivers/hv/hyperv_vmbus.h
+++ b/drivers/hv/hyperv_vmbus.h
@@ -607,7 +607,7 @@ enum vmbus_connect_state {
 struct vmbus_connection {
 	enum vmbus_connect_state conn_state;
 
-	atomic_t next_gpadl_handle;
+	atomic_unchecked_t next_gpadl_handle;
 
 	/*
 	 * Represents channel interrupts. Each bit position represents a
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 4d6b269..2e23b86 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -807,10 +807,10 @@ int vmbus_device_register(struct hv_device *child_device_obj)
 {
 	int ret = 0;
 
-	static atomic_t device_num = ATOMIC_INIT(0);
+	static atomic_unchecked_t device_num = ATOMIC_INIT(0);
 
 	dev_set_name(&child_device_obj->device, "vmbus_0_%d",
-		     atomic_inc_return(&device_num));
+		     atomic_inc_return_unchecked(&device_num));
 
 	child_device_obj->device.bus = &hv_bus;
 	child_device_obj->device.parent = &hv_acpi_dev->dev;
diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c
index 579bdf9..75118b5 100644
--- a/drivers/hwmon/acpi_power_meter.c
+++ b/drivers/hwmon/acpi_power_meter.c
@@ -116,7 +116,7 @@ struct sensor_template {
 		       struct device_attribute *devattr,
 		       const char *buf, size_t count);
 	int index;
-};
+} __do_const;
 
 /* Averaging interval */
 static int update_avg_interval(struct acpi_power_meter_resource *resource)
@@ -631,7 +631,7 @@ static int register_attrs(struct acpi_power_meter_resource *resource,
 			  struct sensor_template *attrs)
 {
 	struct device *dev = &resource->acpi_dev->dev;
-	struct sensor_device_attribute *sensors =
+	sensor_device_attribute_no_const *sensors =
 		&resource->sensors[resource->num_sensors];
 	int res = 0;
 
diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
index 3288f13..71cfb4e 100644
--- a/drivers/hwmon/applesmc.c
+++ b/drivers/hwmon/applesmc.c
@@ -1106,7 +1106,7 @@ static int applesmc_create_nodes(struct applesmc_node_group *groups, int num)
 {
 	struct applesmc_node_group *grp;
 	struct applesmc_dev_attr *node;
-	struct attribute *attr;
+	attribute_no_const *attr;
 	int ret, i;
 
 	for (grp = groups; grp->format; grp++) {
diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c
index ae208f6..48b6c5b 100644
--- a/drivers/hwmon/asus_atk0110.c
+++ b/drivers/hwmon/asus_atk0110.c
@@ -147,10 +147,10 @@ MODULE_DEVICE_TABLE(acpi, atk_ids);
 struct atk_sensor_data {
 	struct list_head list;
 	struct atk_data *data;
-	struct device_attribute label_attr;
-	struct device_attribute input_attr;
-	struct device_attribute limit1_attr;
-	struct device_attribute limit2_attr;
+	device_attribute_no_const label_attr;
+	device_attribute_no_const input_attr;
+	device_attribute_no_const limit1_attr;
+	device_attribute_no_const limit2_attr;
 	char label_attr_name[ATTR_NAME_SIZE];
 	char input_attr_name[ATTR_NAME_SIZE];
 	char limit1_attr_name[ATTR_NAME_SIZE];
@@ -270,7 +270,7 @@ static ssize_t atk_name_show(struct device *dev,
 static struct device_attribute atk_name_attr =
 		__ATTR(name, 0444, atk_name_show, NULL);
 
-static void atk_init_attribute(struct device_attribute *attr, char *name,
+static void atk_init_attribute(device_attribute_no_const *attr, char *name,
 		sysfs_show_func show)
 {
 	sysfs_attr_init(&attr->attr);
diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
index d76f0b7..55ae976 100644
--- a/drivers/hwmon/coretemp.c
+++ b/drivers/hwmon/coretemp.c
@@ -784,7 +784,7 @@ static int coretemp_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block coretemp_cpu_notifier __refdata = {
+static struct notifier_block coretemp_cpu_notifier = {
 	.notifier_call = coretemp_cpu_callback,
 };
 
diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c
index 632f1dc..57e6a58 100644
--- a/drivers/hwmon/ibmaem.c
+++ b/drivers/hwmon/ibmaem.c
@@ -926,7 +926,7 @@ static int aem_register_sensors(struct aem_data *data,
 				struct aem_rw_sensor_template *rw)
 {
 	struct device *dev = &data->pdev->dev;
-	struct sensor_device_attribute *sensors = data->sensors;
+	sensor_device_attribute_no_const *sensors = data->sensors;
 	int err;
 
 	/* Set up read-only sensors */
diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c
index 14c82da..09b25d7 100644
--- a/drivers/hwmon/iio_hwmon.c
+++ b/drivers/hwmon/iio_hwmon.c
@@ -61,7 +61,7 @@ static int iio_hwmon_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct iio_hwmon_state *st;
-	struct sensor_device_attribute *a;
+	sensor_device_attribute_no_const *a;
 	int ret, i;
 	int in_i = 1, temp_i = 1, curr_i = 1;
 	enum iio_chan_type type;
diff --git a/drivers/hwmon/nct6683.c b/drivers/hwmon/nct6683.c
index 7710f46..427a28d 100644
--- a/drivers/hwmon/nct6683.c
+++ b/drivers/hwmon/nct6683.c
@@ -397,11 +397,11 @@ static struct attribute_group *
 nct6683_create_attr_group(struct device *dev, struct sensor_template_group *tg,
 			  int repeat)
 {
-	struct sensor_device_attribute_2 *a2;
-	struct sensor_device_attribute *a;
+	sensor_device_attribute_2_no_const *a2;
+	sensor_device_attribute_no_const *a;
 	struct sensor_device_template **t;
 	struct sensor_device_attr_u *su;
-	struct attribute_group *group;
+	attribute_group_no_const *group;
 	struct attribute **attrs;
 	int i, j, count;
 
diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
index 59d9a3f..2298fa4 100644
--- a/drivers/hwmon/nct6775.c
+++ b/drivers/hwmon/nct6775.c
@@ -944,10 +944,10 @@ static struct attribute_group *
 nct6775_create_attr_group(struct device *dev, struct sensor_template_group *tg,
 			  int repeat)
 {
-	struct attribute_group *group;
+	attribute_group_no_const *group;
 	struct sensor_device_attr_u *su;
-	struct sensor_device_attribute *a;
-	struct sensor_device_attribute_2 *a2;
+	sensor_device_attribute_no_const *a;
+	sensor_device_attribute_2_no_const *a2;
 	struct attribute **attrs;
 	struct sensor_device_template **t;
 	int i, count;
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index 291d11f..3f0dbbd 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -783,7 +783,7 @@ static int pmbus_add_attribute(struct pmbus_data *data, struct attribute *attr)
 	return 0;
 }
 
-static void pmbus_dev_attr_init(struct device_attribute *dev_attr,
+static void pmbus_dev_attr_init(device_attribute_no_const *dev_attr,
 				const char *name,
 				umode_t mode,
 				ssize_t (*show)(struct device *dev,
@@ -800,7 +800,7 @@ static void pmbus_dev_attr_init(struct device_attribute *dev_attr,
 	dev_attr->store = store;
 }
 
-static void pmbus_attr_init(struct sensor_device_attribute *a,
+static void pmbus_attr_init(sensor_device_attribute_no_const *a,
 			    const char *name,
 			    umode_t mode,
 			    ssize_t (*show)(struct device *dev,
@@ -822,7 +822,7 @@ static int pmbus_add_boolean(struct pmbus_data *data,
 			     u16 reg, u8 mask)
 {
 	struct pmbus_boolean *boolean;
-	struct sensor_device_attribute *a;
+	sensor_device_attribute_no_const *a;
 
 	boolean = devm_kzalloc(data->dev, sizeof(*boolean), GFP_KERNEL);
 	if (!boolean)
@@ -847,7 +847,7 @@ static struct pmbus_sensor *pmbus_add_sensor(struct pmbus_data *data,
 					     bool update, bool readonly)
 {
 	struct pmbus_sensor *sensor;
-	struct device_attribute *a;
+	device_attribute_no_const *a;
 
 	sensor = devm_kzalloc(data->dev, sizeof(*sensor), GFP_KERNEL);
 	if (!sensor)
@@ -878,7 +878,7 @@ static int pmbus_add_label(struct pmbus_data *data,
 			   const char *lstring, int index)
 {
 	struct pmbus_label *label;
-	struct device_attribute *a;
+	device_attribute_no_const *a;
 
 	label = devm_kzalloc(data->dev, sizeof(*label), GFP_KERNEL);
 	if (!label)
diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
index 97cd45a..ac54d8b 100644
--- a/drivers/hwmon/sht15.c
+++ b/drivers/hwmon/sht15.c
@@ -169,7 +169,7 @@ struct sht15_data {
 	int				supply_uv;
 	bool				supply_uv_valid;
 	struct work_struct		update_supply_work;
-	atomic_t			interrupt_handled;
+	atomic_unchecked_t		interrupt_handled;
 };
 
 /**
@@ -542,13 +542,13 @@ static int sht15_measurement(struct sht15_data *data,
 	ret = gpio_direction_input(data->pdata->gpio_data);
 	if (ret)
 		return ret;
-	atomic_set(&data->interrupt_handled, 0);
+	atomic_set_unchecked(&data->interrupt_handled, 0);
 
 	enable_irq(gpio_to_irq(data->pdata->gpio_data));
 	if (gpio_get_value(data->pdata->gpio_data) == 0) {
 		disable_irq_nosync(gpio_to_irq(data->pdata->gpio_data));
 		/* Only relevant if the interrupt hasn't occurred. */
-		if (!atomic_read(&data->interrupt_handled))
+		if (!atomic_read_unchecked(&data->interrupt_handled))
 			schedule_work(&data->read_work);
 	}
 	ret = wait_event_timeout(data->wait_queue,
@@ -820,7 +820,7 @@ static irqreturn_t sht15_interrupt_fired(int irq, void *d)
 
 	/* First disable the interrupt */
 	disable_irq_nosync(irq);
-	atomic_inc(&data->interrupt_handled);
+	atomic_inc_unchecked(&data->interrupt_handled);
 	/* Then schedule a reading work struct */
 	if (data->state != SHT15_READING_NOTHING)
 		schedule_work(&data->read_work);
@@ -842,11 +842,11 @@ static void sht15_bh_read_data(struct work_struct *work_s)
 		 * If not, then start the interrupt again - care here as could
 		 * have gone low in meantime so verify it hasn't!
 		 */
-		atomic_set(&data->interrupt_handled, 0);
+		atomic_set_unchecked(&data->interrupt_handled, 0);
 		enable_irq(gpio_to_irq(data->pdata->gpio_data));
 		/* If still not occurred or another handler was scheduled */
 		if (gpio_get_value(data->pdata->gpio_data)
-		    || atomic_read(&data->interrupt_handled))
+		    || atomic_read_unchecked(&data->interrupt_handled))
 			return;
 	}
 
diff --git a/drivers/hwmon/via-cputemp.c b/drivers/hwmon/via-cputemp.c
index 8df43c5..b07b91d 100644
--- a/drivers/hwmon/via-cputemp.c
+++ b/drivers/hwmon/via-cputemp.c
@@ -296,7 +296,7 @@ static int via_cputemp_cpu_callback(struct notifier_block *nfb,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block via_cputemp_cpu_notifier __refdata = {
+static struct notifier_block via_cputemp_cpu_notifier = {
 	.notifier_call = via_cputemp_cpu_callback,
 };
 
diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c
index 41fc683..a39cfea 100644
--- a/drivers/i2c/busses/i2c-amd756-s4882.c
+++ b/drivers/i2c/busses/i2c-amd756-s4882.c
@@ -43,7 +43,7 @@
 extern struct i2c_adapter amd756_smbus;
 
 static struct i2c_adapter *s4882_adapter;
-static struct i2c_algorithm *s4882_algo;
+static i2c_algorithm_no_const *s4882_algo;
 
 /* Wrapper access functions for multiplexed SMBus */
 static DEFINE_MUTEX(amd756_lock);
diff --git a/drivers/i2c/busses/i2c-diolan-u2c.c b/drivers/i2c/busses/i2c-diolan-u2c.c
index b19a310..d6eece0 100644
--- a/drivers/i2c/busses/i2c-diolan-u2c.c
+++ b/drivers/i2c/busses/i2c-diolan-u2c.c
@@ -98,7 +98,7 @@ MODULE_PARM_DESC(frequency, "I2C clock frequency in hertz");
 /* usb layer */
 
 /* Send command to device, and get response. */
-static int diolan_usb_transfer(struct i2c_diolan_u2c *dev)
+static int __intentional_overflow(-1) diolan_usb_transfer(struct i2c_diolan_u2c *dev)
 {
 	int ret = 0;
 	int actual;
diff --git a/drivers/i2c/busses/i2c-nforce2-s4985.c b/drivers/i2c/busses/i2c-nforce2-s4985.c
index b170bdf..3c76427 100644
--- a/drivers/i2c/busses/i2c-nforce2-s4985.c
+++ b/drivers/i2c/busses/i2c-nforce2-s4985.c
@@ -41,7 +41,7 @@
 extern struct i2c_adapter *nforce2_smbus;
 
 static struct i2c_adapter *s4985_adapter;
-static struct i2c_algorithm *s4985_algo;
+static i2c_algorithm_no_const *s4985_algo;
 
 /* Wrapper access functions for multiplexed SMBus */
 static DEFINE_MUTEX(nforce2_lock);
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 80b47e8..1a6040d9 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -277,7 +277,7 @@ static noinline int i2cdev_ioctl_rdrw(struct i2c_client *client,
 			break;
 		}
 
-		data_ptrs[i] = (u8 __user *)rdwr_pa[i].buf;
+		data_ptrs[i] = (u8 __force_user *)rdwr_pa[i].buf;
 		rdwr_pa[i].buf = memdup_user(data_ptrs[i], rdwr_pa[i].len);
 		if (IS_ERR(rdwr_pa[i].buf)) {
 			res = PTR_ERR(rdwr_pa[i].buf);
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 0b510ba..4fbb5085 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -768,7 +768,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
 		alignment = queue_dma_alignment(q) | q->dma_pad_mask;
 		if ((unsigned long)buf & alignment
 		    || blk_rq_bytes(rq) & q->dma_pad_mask
-		    || object_is_on_stack(buf))
+		    || object_starts_on_stack(buf))
 			drive->dma = 0;
 	}
 }
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 4b1f375..770b95f 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -551,7 +551,7 @@ static ssize_t iio_write_channel_info(struct device *dev,
 }
 
 static
-int __iio_device_attr_init(struct device_attribute *dev_attr,
+int __iio_device_attr_init(device_attribute_no_const *dev_attr,
 			   const char *postfix,
 			   struct iio_chan_spec const *chan,
 			   ssize_t (*readfunc)(struct device *dev,
diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
index c323917..6ddea8b 100644
--- a/drivers/infiniband/core/cm.c
+++ b/drivers/infiniband/core/cm.c
@@ -115,7 +115,7 @@ static char const counter_group_names[CM_COUNTER_GROUPS]
 
 struct cm_counter_group {
 	struct kobject obj;
-	atomic_long_t counter[CM_ATTR_COUNT];
+	atomic_long_unchecked_t counter[CM_ATTR_COUNT];
 };
 
 struct cm_counter_attribute {
@@ -1398,7 +1398,7 @@ static void cm_dup_req_handler(struct cm_work *work,
 	struct ib_mad_send_buf *msg = NULL;
 	int ret;
 
-	atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+	atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 			counter[CM_REQ_COUNTER]);
 
 	/* Quick state check to discard duplicate REQs. */
@@ -1785,7 +1785,7 @@ static void cm_dup_rep_handler(struct cm_work *work)
 	if (!cm_id_priv)
 		return;
 
-	atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+	atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 			counter[CM_REP_COUNTER]);
 	ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg);
 	if (ret)
@@ -1952,7 +1952,7 @@ static int cm_rtu_handler(struct cm_work *work)
 	if (cm_id_priv->id.state != IB_CM_REP_SENT &&
 	    cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) {
 		spin_unlock_irq(&cm_id_priv->lock);
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_RTU_COUNTER]);
 		goto out;
 	}
@@ -2135,7 +2135,7 @@ static int cm_dreq_handler(struct cm_work *work)
 	cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id,
 				   dreq_msg->local_comm_id);
 	if (!cm_id_priv) {
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_DREQ_COUNTER]);
 		cm_issue_drep(work->port, work->mad_recv_wc);
 		return -EINVAL;
@@ -2160,7 +2160,7 @@ static int cm_dreq_handler(struct cm_work *work)
 	case IB_CM_MRA_REP_RCVD:
 		break;
 	case IB_CM_TIMEWAIT:
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_DREQ_COUNTER]);
 		if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg))
 			goto unlock;
@@ -2174,7 +2174,7 @@ static int cm_dreq_handler(struct cm_work *work)
 			cm_free_msg(msg);
 		goto deref;
 	case IB_CM_DREQ_RCVD:
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_DREQ_COUNTER]);
 		goto unlock;
 	default:
@@ -2541,7 +2541,7 @@ static int cm_mra_handler(struct cm_work *work)
 		    ib_modify_mad(cm_id_priv->av.port->mad_agent,
 				  cm_id_priv->msg, timeout)) {
 			if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD)
-				atomic_long_inc(&work->port->
+				atomic_long_inc_unchecked(&work->port->
 						counter_group[CM_RECV_DUPLICATES].
 						counter[CM_MRA_COUNTER]);
 			goto out;
@@ -2550,7 +2550,7 @@ static int cm_mra_handler(struct cm_work *work)
 		break;
 	case IB_CM_MRA_REQ_RCVD:
 	case IB_CM_MRA_REP_RCVD:
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_MRA_COUNTER]);
 		/* fall through */
 	default:
@@ -2712,7 +2712,7 @@ static int cm_lap_handler(struct cm_work *work)
 	case IB_CM_LAP_IDLE:
 		break;
 	case IB_CM_MRA_LAP_SENT:
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_LAP_COUNTER]);
 		if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg))
 			goto unlock;
@@ -2728,7 +2728,7 @@ static int cm_lap_handler(struct cm_work *work)
 			cm_free_msg(msg);
 		goto deref;
 	case IB_CM_LAP_RCVD:
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_LAP_COUNTER]);
 		goto unlock;
 	default:
@@ -3012,7 +3012,7 @@ static int cm_sidr_req_handler(struct cm_work *work)
 	cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv);
 	if (cur_cm_id_priv) {
 		spin_unlock_irq(&cm.lock);
-		atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
+		atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
 				counter[CM_SIDR_REQ_COUNTER]);
 		goto out; /* Duplicate message. */
 	}
@@ -3224,10 +3224,10 @@ static void cm_send_handler(struct ib_mad_agent *mad_agent,
 	if (!msg->context[0] && (attr_index != CM_REJ_COUNTER))
 		msg->retries = 1;
 
-	atomic_long_add(1 + msg->retries,
+	atomic_long_add_unchecked(1 + msg->retries,
 			&port->counter_group[CM_XMIT].counter[attr_index]);
 	if (msg->retries)
-		atomic_long_add(msg->retries,
+		atomic_long_add_unchecked(msg->retries,
 				&port->counter_group[CM_XMIT_RETRIES].
 				counter[attr_index]);
 
@@ -3437,7 +3437,7 @@ static void cm_recv_handler(struct ib_mad_agent *mad_agent,
 	}
 
 	attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id);
-	atomic_long_inc(&port->counter_group[CM_RECV].
+	atomic_long_inc_unchecked(&port->counter_group[CM_RECV].
 			counter[attr_id - CM_ATTR_ID_OFFSET]);
 
 	work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths,
@@ -3668,7 +3668,7 @@ static ssize_t cm_show_counter(struct kobject *obj, struct attribute *attr,
 	cm_attr = container_of(attr, struct cm_counter_attribute, attr);
 
 	return sprintf(buf, "%ld\n",
-		       atomic_long_read(&group->counter[cm_attr->index]));
+		       atomic_long_read_unchecked(&group->counter[cm_attr->index]));
 }
 
 static const struct sysfs_ops cm_counter_ops = {
diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c
index 9f5ad7c..588cd84 100644
--- a/drivers/infiniband/core/fmr_pool.c
+++ b/drivers/infiniband/core/fmr_pool.c
@@ -98,8 +98,8 @@ struct ib_fmr_pool {
 
 	struct task_struct       *thread;
 
-	atomic_t                  req_ser;
-	atomic_t                  flush_ser;
+	atomic_unchecked_t        req_ser;
+	atomic_unchecked_t        flush_ser;
 
 	wait_queue_head_t         force_wait;
 };
@@ -179,10 +179,10 @@ static int ib_fmr_cleanup_thread(void *pool_ptr)
 	struct ib_fmr_pool *pool = pool_ptr;
 
 	do {
-		if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) < 0) {
+		if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) < 0) {
 			ib_fmr_batch_release(pool);
 
-			atomic_inc(&pool->flush_ser);
+			atomic_inc_unchecked(&pool->flush_ser);
 			wake_up_interruptible(&pool->force_wait);
 
 			if (pool->flush_function)
@@ -190,7 +190,7 @@ static int ib_fmr_cleanup_thread(void *pool_ptr)
 		}
 
 		set_current_state(TASK_INTERRUPTIBLE);
-		if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) >= 0 &&
+		if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) >= 0 &&
 		    !kthread_should_stop())
 			schedule();
 		__set_current_state(TASK_RUNNING);
@@ -282,8 +282,8 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd             *pd,
 	pool->dirty_watermark = params->dirty_watermark;
 	pool->dirty_len       = 0;
 	spin_lock_init(&pool->pool_lock);
-	atomic_set(&pool->req_ser,   0);
-	atomic_set(&pool->flush_ser, 0);
+	atomic_set_unchecked(&pool->req_ser,   0);
+	atomic_set_unchecked(&pool->flush_ser, 0);
 	init_waitqueue_head(&pool->force_wait);
 
 	pool->thread = kthread_run(ib_fmr_cleanup_thread,
@@ -411,11 +411,11 @@ int ib_flush_fmr_pool(struct ib_fmr_pool *pool)
 	}
 	spin_unlock_irq(&pool->pool_lock);
 
-	serial = atomic_inc_return(&pool->req_ser);
+	serial = atomic_inc_return_unchecked(&pool->req_ser);
 	wake_up_process(pool->thread);
 
 	if (wait_event_interruptible(pool->force_wait,
-				     atomic_read(&pool->flush_ser) - serial >= 0))
+				     atomic_read_unchecked(&pool->flush_ser) - serial >= 0))
 		return -EINTR;
 
 	return 0;
@@ -525,7 +525,7 @@ int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr)
 		} else {
 			list_add_tail(&fmr->list, &pool->dirty_list);
 			if (++pool->dirty_len >= pool->dirty_watermark) {
-				atomic_inc(&pool->req_ser);
+				atomic_inc_unchecked(&pool->req_ser);
 				wake_up_process(pool->thread);
 			}
 		}
diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
index ec7a298..8742e59 100644
--- a/drivers/infiniband/hw/cxgb4/mem.c
+++ b/drivers/infiniband/hw/cxgb4/mem.c
@@ -249,7 +249,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
 	int err;
 	struct fw_ri_tpte tpt;
 	u32 stag_idx;
-	static atomic_t key;
+	static atomic_unchecked_t key;
 
 	if (c4iw_fatal_error(rdev))
 		return -EIO;
@@ -270,7 +270,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
 		if (rdev->stats.stag.cur > rdev->stats.stag.max)
 			rdev->stats.stag.max = rdev->stats.stag.cur;
 		mutex_unlock(&rdev->stats.lock);
-		*stag = (stag_idx << 8) | (atomic_inc_return(&key) & 0xff);
+		*stag = (stag_idx << 8) | (atomic_inc_return_unchecked(&key) & 0xff);
 	}
 	PDBG("%s stag_state 0x%0x type 0x%0x pdid 0x%0x, stag_idx 0x%x\n",
 	     __func__, stag_state, type, pdid, stag_idx);
diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c
index 79b3dbc..96e5fcc 100644
--- a/drivers/infiniband/hw/ipath/ipath_rc.c
+++ b/drivers/infiniband/hw/ipath/ipath_rc.c
@@ -1868,7 +1868,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 		struct ib_atomic_eth *ateth;
 		struct ipath_ack_entry *e;
 		u64 vaddr;
-		atomic64_t *maddr;
+		atomic64_unchecked_t *maddr;
 		u64 sdata;
 		u32 rkey;
 		u8 next;
@@ -1903,11 +1903,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
 					    IB_ACCESS_REMOTE_ATOMIC)))
 			goto nack_acc_unlck;
 		/* Perform atomic OP and save result. */
-		maddr = (atomic64_t *) qp->r_sge.sge.vaddr;
+		maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr;
 		sdata = be64_to_cpu(ateth->swap_data);
 		e = &qp->s_ack_queue[qp->r_head_ack_queue];
 		e->atomic_data = (opcode == OP(FETCH_ADD)) ?
-			(u64) atomic64_add_return(sdata, maddr) - sdata :
+			(u64) atomic64_add_return_unchecked(sdata, maddr) - sdata :
 			(u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr,
 				      be64_to_cpu(ateth->compare_data),
 				      sdata);
diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c
index 1f95bba..9530f87 100644
--- a/drivers/infiniband/hw/ipath/ipath_ruc.c
+++ b/drivers/infiniband/hw/ipath/ipath_ruc.c
@@ -266,7 +266,7 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp)
 	unsigned long flags;
 	struct ib_wc wc;
 	u64 sdata;
-	atomic64_t *maddr;
+	atomic64_unchecked_t *maddr;
 	enum ib_wc_status send_status;
 
 	/*
@@ -382,11 +382,11 @@ again:
 					    IB_ACCESS_REMOTE_ATOMIC)))
 			goto acc_err;
 		/* Perform atomic OP and save result. */
-		maddr = (atomic64_t *) qp->r_sge.sge.vaddr;
+		maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr;
 		sdata = wqe->wr.wr.atomic.compare_add;
 		*(u64 *) sqp->s_sge.sge.vaddr =
 			(wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ?
-			(u64) atomic64_add_return(sdata, maddr) - sdata :
+			(u64) atomic64_add_return_unchecked(sdata, maddr) - sdata :
 			(u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr,
 				      sdata, wqe->wr.wr.atomic.swap);
 		goto send_comp;
diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
index 287ad05..5ae7b44d 100644
--- a/drivers/infiniband/hw/mlx4/mad.c
+++ b/drivers/infiniband/hw/mlx4/mad.c
@@ -98,7 +98,7 @@ __be64 mlx4_ib_gen_node_guid(void)
 
 __be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx)
 {
-	return cpu_to_be64(atomic_inc_return(&ctx->tid)) |
+	return cpu_to_be64(atomic_inc_return_unchecked(&ctx->tid)) |
 		cpu_to_be64(0xff00000000000000LL);
 }
 
diff --git a/drivers/infiniband/hw/mlx4/mcg.c b/drivers/infiniband/hw/mlx4/mcg.c
index ed327e6..ca1739e0 100644
--- a/drivers/infiniband/hw/mlx4/mcg.c
+++ b/drivers/infiniband/hw/mlx4/mcg.c
@@ -1041,7 +1041,7 @@ int mlx4_ib_mcg_port_init(struct mlx4_ib_demux_ctx *ctx)
 {
 	char name[20];
 
-	atomic_set(&ctx->tid, 0);
+	atomic_set_unchecked(&ctx->tid, 0);
 	sprintf(name, "mlx4_ib_mcg%d", ctx->port);
 	ctx->mcg_wq = create_singlethread_workqueue(name);
 	if (!ctx->mcg_wq)
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 369da3c..223e6e9 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -426,7 +426,7 @@ struct mlx4_ib_demux_ctx {
 	struct list_head	mcg_mgid0_list;
 	struct workqueue_struct	*mcg_wq;
 	struct mlx4_ib_demux_pv_ctx **tun;
-	atomic_t tid;
+	atomic_unchecked_t tid;
 	int    flushing; /* flushing the work queue */
 };
 
diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
index 9d3e5c1..6f166df 100644
--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
@@ -772,7 +772,7 @@ static void mthca_setup_cmd_doorbells(struct mthca_dev *dev, u64 base)
 	mthca_dbg(dev, "Mapped doorbell page for posting FW commands\n");
 }
 
-int mthca_QUERY_FW(struct mthca_dev *dev)
+int __intentional_overflow(-1) mthca_QUERY_FW(struct mthca_dev *dev)
 {
 	struct mthca_mailbox *mailbox;
 	u32 *outbox;
@@ -1612,7 +1612,7 @@ int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
 			     CMD_TIME_CLASS_B);
 }
 
-int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+int __intentional_overflow(-1) mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
 		    int num_mtt)
 {
 	return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
@@ -1634,7 +1634,7 @@ int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
 			 0, CMD_MAP_EQ, CMD_TIME_CLASS_B);
 }
 
-int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
+int __intentional_overflow(-1) mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
 		   int eq_num)
 {
 	return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
@@ -1857,7 +1857,7 @@ int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn)
 			 CMD_TIME_CLASS_B);
 }
 
-int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
+int __intentional_overflow(-1) mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
 		  int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
 		  void *in_mad, void *response_mad)
 {
diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index ded76c1..0cf0a08 100644
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -692,7 +692,7 @@ err_close:
 	return err;
 }
 
-static int mthca_setup_hca(struct mthca_dev *dev)
+static int __intentional_overflow(-1) mthca_setup_hca(struct mthca_dev *dev)
 {
 	int err;
 
diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index ed9a989..6aa5dc2 100644
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -81,7 +81,7 @@ struct mthca_mpt_entry {
  * through the bitmaps)
  */
 
-static u32 mthca_buddy_alloc(struct mthca_buddy *buddy, int order)
+static u32 __intentional_overflow(-1) mthca_buddy_alloc(struct mthca_buddy *buddy, int order)
 {
 	int o;
 	int m;
@@ -426,7 +426,7 @@ static inline u32 adjust_key(struct mthca_dev *dev, u32 key)
 		return key;
 }
 
-int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
+int __intentional_overflow(-1) mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
 		   u64 iova, u64 total_size, u32 access, struct mthca_mr *mr)
 {
 	struct mthca_mailbox *mailbox;
@@ -516,7 +516,7 @@ int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd,
 	return mthca_mr_alloc(dev, pd, 12, 0, ~0ULL, access, mr);
 }
 
-int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
+int __intentional_overflow(-1) mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
 			u64 *buffer_list, int buffer_size_shift,
 			int list_len, u64 iova, u64 total_size,
 			u32 access, struct mthca_mr *mr)
diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 415f8e1..e34214e 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -764,7 +764,7 @@ unlock:
 	return 0;
 }
 
-static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
+static int __intentional_overflow(-1) mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
 {
 	struct mthca_dev *dev = to_mdev(ibcq->device);
 	struct mthca_cq *cq = to_mcq(ibcq);
diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
index 3b2a6dc..bce26ff 100644
--- a/drivers/infiniband/hw/nes/nes.c
+++ b/drivers/infiniband/hw/nes/nes.c
@@ -97,7 +97,7 @@ MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
 LIST_HEAD(nes_adapter_list);
 static LIST_HEAD(nes_dev_list);
 
-atomic_t qps_destroyed;
+atomic_unchecked_t qps_destroyed;
 
 static unsigned int ee_flsh_adapter;
 static unsigned int sysfs_nonidx_addr;
@@ -278,7 +278,7 @@ static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_r
 	struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
 	struct nes_adapter *nesadapter = nesdev->nesadapter;
 
-	atomic_inc(&qps_destroyed);
+	atomic_inc_unchecked(&qps_destroyed);
 
 	/* Free the control structures */
 
diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h
index bd9d132..70d84f4 100644
--- a/drivers/infiniband/hw/nes/nes.h
+++ b/drivers/infiniband/hw/nes/nes.h
@@ -180,17 +180,17 @@ extern unsigned int nes_debug_level;
 extern unsigned int wqm_quanta;
 extern struct list_head nes_adapter_list;
 
-extern atomic_t cm_connects;
-extern atomic_t cm_accepts;
-extern atomic_t cm_disconnects;
-extern atomic_t cm_closes;
-extern atomic_t cm_connecteds;
-extern atomic_t cm_connect_reqs;
-extern atomic_t cm_rejects;
-extern atomic_t mod_qp_timouts;
-extern atomic_t qps_created;
-extern atomic_t qps_destroyed;
-extern atomic_t sw_qps_destroyed;
+extern atomic_unchecked_t cm_connects;
+extern atomic_unchecked_t cm_accepts;
+extern atomic_unchecked_t cm_disconnects;
+extern atomic_unchecked_t cm_closes;
+extern atomic_unchecked_t cm_connecteds;
+extern atomic_unchecked_t cm_connect_reqs;
+extern atomic_unchecked_t cm_rejects;
+extern atomic_unchecked_t mod_qp_timouts;
+extern atomic_unchecked_t qps_created;
+extern atomic_unchecked_t qps_destroyed;
+extern atomic_unchecked_t sw_qps_destroyed;
 extern u32 mh_detected;
 extern u32 mh_pauses_sent;
 extern u32 cm_packets_sent;
@@ -199,16 +199,16 @@ extern u32 cm_packets_created;
 extern u32 cm_packets_received;
 extern u32 cm_packets_dropped;
 extern u32 cm_packets_retrans;
-extern atomic_t cm_listens_created;
-extern atomic_t cm_listens_destroyed;
+extern atomic_unchecked_t cm_listens_created;
+extern atomic_unchecked_t cm_listens_destroyed;
 extern u32 cm_backlog_drops;
-extern atomic_t cm_loopbacks;
-extern atomic_t cm_nodes_created;
-extern atomic_t cm_nodes_destroyed;
-extern atomic_t cm_accel_dropped_pkts;
-extern atomic_t cm_resets_recvd;
-extern atomic_t pau_qps_created;
-extern atomic_t pau_qps_destroyed;
+extern atomic_unchecked_t cm_loopbacks;
+extern atomic_unchecked_t cm_nodes_created;
+extern atomic_unchecked_t cm_nodes_destroyed;
+extern atomic_unchecked_t cm_accel_dropped_pkts;
+extern atomic_unchecked_t cm_resets_recvd;
+extern atomic_unchecked_t pau_qps_created;
+extern atomic_unchecked_t pau_qps_destroyed;
 
 extern u32 int_mod_timer_init;
 extern u32 int_mod_cq_depth_256;
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 6f09a72..cf4399d 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -69,14 +69,14 @@ u32 cm_packets_dropped;
 u32 cm_packets_retrans;
 u32 cm_packets_created;
 u32 cm_packets_received;
-atomic_t cm_listens_created;
-atomic_t cm_listens_destroyed;
+atomic_unchecked_t cm_listens_created;
+atomic_unchecked_t cm_listens_destroyed;
 u32 cm_backlog_drops;
-atomic_t cm_loopbacks;
-atomic_t cm_nodes_created;
-atomic_t cm_nodes_destroyed;
-atomic_t cm_accel_dropped_pkts;
-atomic_t cm_resets_recvd;
+atomic_unchecked_t cm_loopbacks;
+atomic_unchecked_t cm_nodes_created;
+atomic_unchecked_t cm_nodes_destroyed;
+atomic_unchecked_t cm_accel_dropped_pkts;
+atomic_unchecked_t cm_resets_recvd;
 
 static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *);
 static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *);
@@ -135,28 +135,28 @@ static void record_ird_ord(struct nes_cm_node *, u16, u16);
 /* instance of function pointers for client API */
 /* set address of this instance to cm_core->cm_ops at cm_core alloc */
 static struct nes_cm_ops nes_cm_api = {
-	mini_cm_accelerated,
-	mini_cm_listen,
-	mini_cm_del_listen,
-	mini_cm_connect,
-	mini_cm_close,
-	mini_cm_accept,
-	mini_cm_reject,
-	mini_cm_recv_pkt,
-	mini_cm_dealloc_core,
-	mini_cm_get,
-	mini_cm_set
+	.accelerated = mini_cm_accelerated,
+	.listen = mini_cm_listen,
+	.stop_listener = mini_cm_del_listen,
+	.connect = mini_cm_connect,
+	.close = mini_cm_close,
+	.accept = mini_cm_accept,
+	.reject = mini_cm_reject,
+	.recv_pkt = mini_cm_recv_pkt,
+	.destroy_cm_core = mini_cm_dealloc_core,
+	.get = mini_cm_get,
+	.set = mini_cm_set
 };
 
 static struct nes_cm_core *g_cm_core;
 
-atomic_t cm_connects;
-atomic_t cm_accepts;
-atomic_t cm_disconnects;
-atomic_t cm_closes;
-atomic_t cm_connecteds;
-atomic_t cm_connect_reqs;
-atomic_t cm_rejects;
+atomic_unchecked_t cm_connects;
+atomic_unchecked_t cm_accepts;
+atomic_unchecked_t cm_disconnects;
+atomic_unchecked_t cm_closes;
+atomic_unchecked_t cm_connecteds;
+atomic_unchecked_t cm_connect_reqs;
+atomic_unchecked_t cm_rejects;
 
 int nes_add_ref_cm_node(struct nes_cm_node *cm_node)
 {
@@ -1436,7 +1436,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core,
 		kfree(listener);
 		listener = NULL;
 		ret = 0;
-		atomic_inc(&cm_listens_destroyed);
+		atomic_inc_unchecked(&cm_listens_destroyed);
 	} else {
 		spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
 	}
@@ -1637,7 +1637,7 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core,
 		  cm_node->rem_mac);
 
 	add_hte_node(cm_core, cm_node);
-	atomic_inc(&cm_nodes_created);
+	atomic_inc_unchecked(&cm_nodes_created);
 
 	return cm_node;
 }
@@ -1698,7 +1698,7 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core,
 	}
 
 	atomic_dec(&cm_core->node_cnt);
-	atomic_inc(&cm_nodes_destroyed);
+	atomic_inc_unchecked(&cm_nodes_destroyed);
 	nesqp = cm_node->nesqp;
 	if (nesqp) {
 		nesqp->cm_node = NULL;
@@ -1762,7 +1762,7 @@ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc,
 
 static void drop_packet(struct sk_buff *skb)
 {
-	atomic_inc(&cm_accel_dropped_pkts);
+	atomic_inc_unchecked(&cm_accel_dropped_pkts);
 	dev_kfree_skb_any(skb);
 }
 
@@ -1825,7 +1825,7 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
 {
 
 	int	reset = 0;	/* whether to send reset in case of err.. */
-	atomic_inc(&cm_resets_recvd);
+	atomic_inc_unchecked(&cm_resets_recvd);
 	nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u."
 			" refcnt=%d\n", cm_node, cm_node->state,
 			atomic_read(&cm_node->ref_count));
@@ -2492,7 +2492,7 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
 				rem_ref_cm_node(cm_node->cm_core, cm_node);
 				return NULL;
 			}
-			atomic_inc(&cm_loopbacks);
+			atomic_inc_unchecked(&cm_loopbacks);
 			loopbackremotenode->loopbackpartner = cm_node;
 			loopbackremotenode->tcp_cntxt.rcv_wscale =
 				NES_CM_DEFAULT_RCV_WND_SCALE;
@@ -2773,7 +2773,7 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core,
 				nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp);
 			else {
 				rem_ref_cm_node(cm_core, cm_node);
-				atomic_inc(&cm_accel_dropped_pkts);
+				atomic_inc_unchecked(&cm_accel_dropped_pkts);
 				dev_kfree_skb_any(skb);
 			}
 			break;
@@ -3081,7 +3081,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
 
 	if ((cm_id) && (cm_id->event_handler)) {
 		if (issue_disconn) {
-			atomic_inc(&cm_disconnects);
+			atomic_inc_unchecked(&cm_disconnects);
 			cm_event.event = IW_CM_EVENT_DISCONNECT;
 			cm_event.status = disconn_status;
 			cm_event.local_addr = cm_id->local_addr;
@@ -3103,7 +3103,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
 		}
 
 		if (issue_close) {
-			atomic_inc(&cm_closes);
+			atomic_inc_unchecked(&cm_closes);
 			nes_disconnect(nesqp, 1);
 
 			cm_id->provider_data = nesqp;
@@ -3241,7 +3241,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 
 	nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n",
 		nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener);
-	atomic_inc(&cm_accepts);
+	atomic_inc_unchecked(&cm_accepts);
 
 	nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n",
 			netdev_refcnt_read(nesvnic->netdev));
@@ -3439,7 +3439,7 @@ int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
 	struct nes_cm_core *cm_core;
 	u8 *start_buff;
 
-	atomic_inc(&cm_rejects);
+	atomic_inc_unchecked(&cm_rejects);
 	cm_node = (struct nes_cm_node *)cm_id->provider_data;
 	loopback = cm_node->loopbackpartner;
 	cm_core = cm_node->cm_core;
@@ -3504,7 +3504,7 @@ int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
 		  ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr),
 		  ntohs(laddr->sin_port));
 
-	atomic_inc(&cm_connects);
+	atomic_inc_unchecked(&cm_connects);
 	nesqp->active_conn = 1;
 
 	/* cache the cm_id in the qp */
@@ -3649,7 +3649,7 @@ int nes_create_listen(struct iw_cm_id *cm_id, int backlog)
 			g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node);
 			return err;
 		}
-		atomic_inc(&cm_listens_created);
+		atomic_inc_unchecked(&cm_listens_created);
 	}
 
 	cm_id->add_ref(cm_id);
@@ -3756,7 +3756,7 @@ static void cm_event_connected(struct nes_cm_event *event)
 
 	if (nesqp->destroyed)
 		return;
-	atomic_inc(&cm_connecteds);
+	atomic_inc_unchecked(&cm_connecteds);
 	nes_debug(NES_DBG_CM, "QP%u attempting to connect to  0x%08X:0x%04X on"
 		  " local port 0x%04X. jiffies = %lu.\n",
 		  nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr),
@@ -3941,7 +3941,7 @@ static void cm_event_reset(struct nes_cm_event *event)
 
 	cm_id->add_ref(cm_id);
 	ret = cm_id->event_handler(cm_id, &cm_event);
-	atomic_inc(&cm_closes);
+	atomic_inc_unchecked(&cm_closes);
 	cm_event.event = IW_CM_EVENT_CLOSE;
 	cm_event.status = 0;
 	cm_event.provider_data = cm_id->provider_data;
@@ -3981,7 +3981,7 @@ static void cm_event_mpa_req(struct nes_cm_event *event)
 		return;
 	cm_id = cm_node->cm_id;
 
-	atomic_inc(&cm_connect_reqs);
+	atomic_inc_unchecked(&cm_connect_reqs);
 	nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
 		  cm_node, cm_id, jiffies);
 
@@ -4030,7 +4030,7 @@ static void cm_event_mpa_reject(struct nes_cm_event *event)
 		return;
 	cm_id = cm_node->cm_id;
 
-	atomic_inc(&cm_connect_reqs);
+	atomic_inc_unchecked(&cm_connect_reqs);
 	nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
 		  cm_node, cm_id, jiffies);
 
diff --git a/drivers/infiniband/hw/nes/nes_mgt.c b/drivers/infiniband/hw/nes/nes_mgt.c
index 4166452..fc952c3 100644
--- a/drivers/infiniband/hw/nes/nes_mgt.c
+++ b/drivers/infiniband/hw/nes/nes_mgt.c
@@ -40,8 +40,8 @@
 #include "nes.h"
 #include "nes_mgt.h"
 
-atomic_t pau_qps_created;
-atomic_t pau_qps_destroyed;
+atomic_unchecked_t pau_qps_created;
+atomic_unchecked_t pau_qps_destroyed;
 
 static void nes_replenish_mgt_rq(struct nes_vnic_mgt *mgtvnic)
 {
@@ -621,7 +621,7 @@ void nes_destroy_pau_qp(struct nes_device *nesdev, struct nes_qp *nesqp)
 {
 	struct sk_buff *skb;
 	unsigned long flags;
-	atomic_inc(&pau_qps_destroyed);
+	atomic_inc_unchecked(&pau_qps_destroyed);
 
 	/* Free packets that have not yet been forwarded */
 	/* Lock is acquired by skb_dequeue when removing the skb */
@@ -810,7 +810,7 @@ static void nes_mgt_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *
 					cq->cq_vbase[head].cqe_words[NES_NIC_CQE_HASH_RCVNXT]);
 				skb_queue_head_init(&nesqp->pau_list);
 				spin_lock_init(&nesqp->pau_lock);
-				atomic_inc(&pau_qps_created);
+				atomic_inc_unchecked(&pau_qps_created);
 				nes_change_quad_hash(nesdev, mgtvnic->nesvnic, nesqp);
 			}
 
diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
index 49eb511..a774366 100644
--- a/drivers/infiniband/hw/nes/nes_nic.c
+++ b/drivers/infiniband/hw/nes/nes_nic.c
@@ -1273,39 +1273,39 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
 	target_stat_values[++index] = mh_detected;
 	target_stat_values[++index] = mh_pauses_sent;
 	target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits;
-	target_stat_values[++index] = atomic_read(&cm_connects);
-	target_stat_values[++index] = atomic_read(&cm_accepts);
-	target_stat_values[++index] = atomic_read(&cm_disconnects);
-	target_stat_values[++index] = atomic_read(&cm_connecteds);
-	target_stat_values[++index] = atomic_read(&cm_connect_reqs);
-	target_stat_values[++index] = atomic_read(&cm_rejects);
-	target_stat_values[++index] = atomic_read(&mod_qp_timouts);
-	target_stat_values[++index] = atomic_read(&qps_created);
-	target_stat_values[++index] = atomic_read(&sw_qps_destroyed);
-	target_stat_values[++index] = atomic_read(&qps_destroyed);
-	target_stat_values[++index] = atomic_read(&cm_closes);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_connects);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_accepts);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_disconnects);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_connecteds);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_connect_reqs);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_rejects);
+	target_stat_values[++index] = atomic_read_unchecked(&mod_qp_timouts);
+	target_stat_values[++index] = atomic_read_unchecked(&qps_created);
+	target_stat_values[++index] = atomic_read_unchecked(&sw_qps_destroyed);
+	target_stat_values[++index] = atomic_read_unchecked(&qps_destroyed);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_closes);
 	target_stat_values[++index] = cm_packets_sent;
 	target_stat_values[++index] = cm_packets_bounced;
 	target_stat_values[++index] = cm_packets_created;
 	target_stat_values[++index] = cm_packets_received;
 	target_stat_values[++index] = cm_packets_dropped;
 	target_stat_values[++index] = cm_packets_retrans;
-	target_stat_values[++index] = atomic_read(&cm_listens_created);
-	target_stat_values[++index] = atomic_read(&cm_listens_destroyed);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_listens_created);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_listens_destroyed);
 	target_stat_values[++index] = cm_backlog_drops;
-	target_stat_values[++index] = atomic_read(&cm_loopbacks);
-	target_stat_values[++index] = atomic_read(&cm_nodes_created);
-	target_stat_values[++index] = atomic_read(&cm_nodes_destroyed);
-	target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts);
-	target_stat_values[++index] = atomic_read(&cm_resets_recvd);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_loopbacks);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_created);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_destroyed);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_accel_dropped_pkts);
+	target_stat_values[++index] = atomic_read_unchecked(&cm_resets_recvd);
 	target_stat_values[++index] = nesadapter->free_4kpbl;
 	target_stat_values[++index] = nesadapter->free_256pbl;
 	target_stat_values[++index] = int_mod_timer_init;
 	target_stat_values[++index] = nesvnic->lro_mgr.stats.aggregated;
 	target_stat_values[++index] = nesvnic->lro_mgr.stats.flushed;
 	target_stat_values[++index] = nesvnic->lro_mgr.stats.no_desc;
-	target_stat_values[++index] = atomic_read(&pau_qps_created);
-	target_stat_values[++index] = atomic_read(&pau_qps_destroyed);
+	target_stat_values[++index] = atomic_read_unchecked(&pau_qps_created);
+	target_stat_values[++index] = atomic_read_unchecked(&pau_qps_destroyed);
 }
 
 /**
diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 218dd35..97ce31d 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -46,9 +46,9 @@
 
 #include <rdma/ib_umem.h>
 
-atomic_t mod_qp_timouts;
-atomic_t qps_created;
-atomic_t sw_qps_destroyed;
+atomic_unchecked_t mod_qp_timouts;
+atomic_unchecked_t qps_created;
+atomic_unchecked_t sw_qps_destroyed;
 
 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
 
@@ -1134,7 +1134,7 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
 	if (init_attr->create_flags)
 		return ERR_PTR(-EINVAL);
 
-	atomic_inc(&qps_created);
+	atomic_inc_unchecked(&qps_created);
 	switch (init_attr->qp_type) {
 		case IB_QPT_RC:
 			if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
@@ -1468,7 +1468,7 @@ static int nes_destroy_qp(struct ib_qp *ibqp)
 	struct iw_cm_event cm_event;
 	int ret = 0;
 
-	atomic_inc(&sw_qps_destroyed);
+	atomic_inc_unchecked(&sw_qps_destroyed);
 	nesqp->destroyed = 1;
 
 	/* Blow away the connection if it exists. */
diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
index c00ae09..04e91be 100644
--- a/drivers/infiniband/hw/qib/qib.h
+++ b/drivers/infiniband/hw/qib/qib.h
@@ -52,6 +52,7 @@
 #include <linux/kref.h>
 #include <linux/sched.h>
 #include <linux/kthread.h>
+#include <linux/slab.h>
 
 #include "qib_common.h"
 #include "qib_verbs.h"
diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
index 24c41ba..102d71f 100644
--- a/drivers/input/gameport/gameport.c
+++ b/drivers/input/gameport/gameport.c
@@ -490,14 +490,14 @@ EXPORT_SYMBOL(gameport_set_phys);
  */
 static void gameport_init_port(struct gameport *gameport)
 {
-	static atomic_t gameport_no = ATOMIC_INIT(0);
+	static atomic_unchecked_t gameport_no = ATOMIC_INIT(0);
 
 	__module_get(THIS_MODULE);
 
 	mutex_init(&gameport->drv_mutex);
 	device_initialize(&gameport->dev);
 	dev_set_name(&gameport->dev, "gameport%lu",
-			(unsigned long)atomic_inc_return(&gameport_no) - 1);
+			(unsigned long)atomic_inc_return_unchecked(&gameport_no) - 1);
 	gameport->dev.bus = &gameport_bus;
 	gameport->dev.release = gameport_release_port;
 	if (gameport->parent)
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 29ca0bb..f4bc2e3 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1774,7 +1774,7 @@ EXPORT_SYMBOL_GPL(input_class);
  */
 struct input_dev *input_allocate_device(void)
 {
-	static atomic_t input_no = ATOMIC_INIT(0);
+	static atomic_unchecked_t input_no = ATOMIC_INIT(0);
 	struct input_dev *dev;
 
 	dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
@@ -1789,7 +1789,7 @@ struct input_dev *input_allocate_device(void)
 		INIT_LIST_HEAD(&dev->node);
 
 		dev_set_name(&dev->dev, "input%ld",
-			     (unsigned long) atomic_inc_return(&input_no) - 1);
+			     (unsigned long) atomic_inc_return_unchecked(&input_no) - 1);
 
 		__module_get(THIS_MODULE);
 	}
diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c
index 4a95b22..874c182 100644
--- a/drivers/input/joystick/sidewinder.c
+++ b/drivers/input/joystick/sidewinder.c
@@ -30,6 +30,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/sched.h>
 #include <linux/input.h>
 #include <linux/gameport.h>
 #include <linux/jiffies.h>
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index 603fe0d..f63decc 100644
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@@ -737,7 +737,7 @@ static void xpad_led_set(struct led_classdev *led_cdev,
 
 static int xpad_led_probe(struct usb_xpad *xpad)
 {
-	static atomic_t led_seq	= ATOMIC_INIT(0);
+	static atomic_unchecked_t led_seq	= ATOMIC_INIT(0);
 	long led_no;
 	struct xpad_led *led;
 	struct led_classdev *led_cdev;
@@ -750,7 +750,7 @@ static int xpad_led_probe(struct usb_xpad *xpad)
 	if (!led)
 		return -ENOMEM;
 
-	led_no = (long)atomic_inc_return(&led_seq) - 1;
+	led_no = (long)atomic_inc_return_unchecked(&led_seq) - 1;
 
 	snprintf(led->name, sizeof(led->name), "xpad%ld", led_no);
 	led->xpad = xpad;
diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
index 719410f..1896169 100644
--- a/drivers/input/misc/ims-pcu.c
+++ b/drivers/input/misc/ims-pcu.c
@@ -1851,7 +1851,7 @@ static int ims_pcu_identify_type(struct ims_pcu *pcu, u8 *device_id)
 
 static int ims_pcu_init_application_mode(struct ims_pcu *pcu)
 {
-	static atomic_t device_no = ATOMIC_INIT(0);
+	static atomic_unchecked_t device_no = ATOMIC_INIT(0);
 
 	const struct ims_pcu_device_info *info;
 	int error;
@@ -1882,7 +1882,7 @@ static int ims_pcu_init_application_mode(struct ims_pcu *pcu)
 	}
 
 	/* Device appears to be operable, complete initialization */
-	pcu->device_no = atomic_inc_return(&device_no) - 1;
+	pcu->device_no = atomic_inc_return_unchecked(&device_no) - 1;
 
 	/*
 	 * PCU-B devices, both GEN_1 and GEN_2 do not have OFN sensor
diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h
index 2f0b39d..7370f13 100644
--- a/drivers/input/mouse/psmouse.h
+++ b/drivers/input/mouse/psmouse.h
@@ -116,7 +116,7 @@ struct psmouse_attribute {
 	ssize_t (*set)(struct psmouse *psmouse, void *data,
 			const char *buf, size_t count);
 	bool protect;
-};
+} __do_const;
 #define to_psmouse_attr(a)	container_of((a), struct psmouse_attribute, dattr)
 
 ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *attr,
diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
index b604564..3f14ae4 100644
--- a/drivers/input/mousedev.c
+++ b/drivers/input/mousedev.c
@@ -744,7 +744,7 @@ static ssize_t mousedev_read(struct file *file, char __user *buffer,
 
 	spin_unlock_irq(&client->packet_lock);
 
-	if (copy_to_user(buffer, data, count))
+	if (count > sizeof(data) || copy_to_user(buffer, data, count))
 		return -EFAULT;
 
 	return count;
diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
index b29134d..394deb0 100644
--- a/drivers/input/serio/serio.c
+++ b/drivers/input/serio/serio.c
@@ -514,7 +514,7 @@ static void serio_release_port(struct device *dev)
  */
 static void serio_init_port(struct serio *serio)
 {
-	static atomic_t serio_no = ATOMIC_INIT(0);
+	static atomic_unchecked_t serio_no = ATOMIC_INIT(0);
 
 	__module_get(THIS_MODULE);
 
@@ -525,7 +525,7 @@ static void serio_init_port(struct serio *serio)
 	mutex_init(&serio->drv_mutex);
 	device_initialize(&serio->dev);
 	dev_set_name(&serio->dev, "serio%ld",
-			(long)atomic_inc_return(&serio_no) - 1);
+			(long)atomic_inc_return_unchecked(&serio_no) - 1);
 	serio->dev.bus = &serio_bus;
 	serio->dev.release = serio_release_port;
 	serio->dev.groups = serio_device_attr_groups;
diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
index c9a02fe..0debc75 100644
--- a/drivers/input/serio/serio_raw.c
+++ b/drivers/input/serio/serio_raw.c
@@ -292,7 +292,7 @@ static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data,
 
 static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
 {
-	static atomic_t serio_raw_no = ATOMIC_INIT(0);
+	static atomic_unchecked_t serio_raw_no = ATOMIC_INIT(0);
 	struct serio_raw *serio_raw;
 	int err;
 
@@ -303,7 +303,7 @@ static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
 	}
 
 	snprintf(serio_raw->name, sizeof(serio_raw->name),
-		 "serio_raw%ld", (long)atomic_inc_return(&serio_raw_no) - 1);
+		 "serio_raw%ld", (long)atomic_inc_return_unchecked(&serio_raw_no) - 1);
 	kref_init(&serio_raw->kref);
 	INIT_LIST_HEAD(&serio_raw->client_list);
 	init_waitqueue_head(&serio_raw->wait);
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index e5555fc..937986d 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -588,7 +588,7 @@ static struct notifier_block iommu_bus_nb = {
 static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops)
 {
 	bus_register_notifier(bus, &iommu_bus_nb);
-	bus_for_each_dev(bus, NULL, ops, add_iommu_group);
+	bus_for_each_dev(bus, NULL, (void *)ops, add_iommu_group);
 }
 
 /**
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 33c4395..e06447e 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -354,7 +354,7 @@ int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
 void panic_if_irq_remap(const char *msg)
 {
 	if (irq_remapping_enabled)
-		panic(msg);
+		panic("%s", msg);
 }
 
 static void ir_ack_apic_edge(struct irq_data *data)
@@ -375,10 +375,12 @@ static void ir_print_prefix(struct irq_data *data, struct seq_file *p)
 
 void irq_remap_modify_chip_defaults(struct irq_chip *chip)
 {
-	chip->irq_print_chip = ir_print_prefix;
-	chip->irq_ack = ir_ack_apic_edge;
-	chip->irq_eoi = ir_ack_apic_level;
-	chip->irq_set_affinity = x86_io_apic_ops.set_affinity;
+	pax_open_kernel();
+	*(void **)&chip->irq_print_chip = ir_print_prefix;
+	*(void **)&chip->irq_ack = ir_ack_apic_edge;
+	*(void **)&chip->irq_eoi = ir_ack_apic_level;
+	*(void **)&chip->irq_set_affinity = x86_io_apic_ops.set_affinity;
+	pax_close_kernel();
 }
 
 bool setup_remapped_irq(int irq, struct irq_cfg *cfg, struct irq_chip *chip)
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 7c131cf..035129b 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -85,7 +85,7 @@ static u8 gic_cpu_map[NR_GIC_CPU_IF] __read_mostly;
  * Supported arch specific GIC irq extension.
  * Default make them NULL.
  */
-struct irq_chip gic_arch_extn = {
+irq_chip_no_const gic_arch_extn = {
 	.irq_eoi	= NULL,
 	.irq_mask	= NULL,
 	.irq_unmask	= NULL,
@@ -337,7 +337,7 @@ static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
 	chained_irq_exit(chip, desc);
 }
 
-static struct irq_chip gic_chip = {
+static irq_chip_no_const gic_chip __read_only = {
 	.name			= "GIC",
 	.irq_mask		= gic_mask_irq,
 	.irq_unmask		= gic_unmask_irq,
diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
index 8777065..a4a9967 100644
--- a/drivers/irqchip/irq-renesas-irqc.c
+++ b/drivers/irqchip/irq-renesas-irqc.c
@@ -151,7 +151,7 @@ static int irqc_probe(struct platform_device *pdev)
 	struct irqc_priv *p;
 	struct resource *io;
 	struct resource *irq;
-	struct irq_chip *irq_chip;
+	irq_chip_no_const *irq_chip;
 	const char *name = dev_name(&pdev->dev);
 	int ret;
 	int k;
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index f9a87ed..3fdd854 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -81,8 +81,8 @@ struct capiminor {
 
 	struct capi20_appl	*ap;
 	u32			ncci;
-	atomic_t		datahandle;
-	atomic_t		msgid;
+	atomic_unchecked_t	datahandle;
+	atomic_unchecked_t	msgid;
 
 	struct tty_port port;
 	int                ttyinstop;
@@ -391,7 +391,7 @@ gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb)
 		capimsg_setu16(s, 2, mp->ap->applid);
 		capimsg_setu8 (s, 4, CAPI_DATA_B3);
 		capimsg_setu8 (s, 5, CAPI_RESP);
-		capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid));
+		capimsg_setu16(s, 6, atomic_inc_return_unchecked(&mp->msgid));
 		capimsg_setu32(s, 8, mp->ncci);
 		capimsg_setu16(s, 12, datahandle);
 	}
@@ -512,14 +512,14 @@ static void handle_minor_send(struct capiminor *mp)
 		mp->outbytes -= len;
 		spin_unlock_bh(&mp->outlock);
 
-		datahandle = atomic_inc_return(&mp->datahandle);
+		datahandle = atomic_inc_return_unchecked(&mp->datahandle);
 		skb_push(skb, CAPI_DATA_B3_REQ_LEN);
 		memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
 		capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
 		capimsg_setu16(skb->data, 2, mp->ap->applid);
 		capimsg_setu8 (skb->data, 4, CAPI_DATA_B3);
 		capimsg_setu8 (skb->data, 5, CAPI_REQ);
-		capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid));
+		capimsg_setu16(skb->data, 6, atomic_inc_return_unchecked(&mp->msgid));
 		capimsg_setu32(skb->data, 8, mp->ncci);	/* NCCI */
 		capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */
 		capimsg_setu16(skb->data, 16, len);	/* Data length */
diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c
index b7ae0a0..04590fa 100644
--- a/drivers/isdn/gigaset/bas-gigaset.c
+++ b/drivers/isdn/gigaset/bas-gigaset.c
@@ -2565,22 +2565,22 @@ static int gigaset_post_reset(struct usb_interface *intf)
 
 
 static const struct gigaset_ops gigops = {
-	gigaset_write_cmd,
-	gigaset_write_room,
-	gigaset_chars_in_buffer,
-	gigaset_brkchars,
-	gigaset_init_bchannel,
-	gigaset_close_bchannel,
-	gigaset_initbcshw,
-	gigaset_freebcshw,
-	gigaset_reinitbcshw,
-	gigaset_initcshw,
-	gigaset_freecshw,
-	gigaset_set_modem_ctrl,
-	gigaset_baud_rate,
-	gigaset_set_line_ctrl,
-	gigaset_isoc_send_skb,
-	gigaset_isoc_input,
+	.write_cmd = gigaset_write_cmd,
+	.write_room = gigaset_write_room,
+	.chars_in_buffer = gigaset_chars_in_buffer,
+	.brkchars = gigaset_brkchars,
+	.init_bchannel = gigaset_init_bchannel,
+	.close_bchannel = gigaset_close_bchannel,
+	.initbcshw = gigaset_initbcshw,
+	.freebcshw = gigaset_freebcshw,
+	.reinitbcshw = gigaset_reinitbcshw,
+	.initcshw = gigaset_initcshw,
+	.freecshw = gigaset_freecshw,
+	.set_modem_ctrl = gigaset_set_modem_ctrl,
+	.baud_rate = gigaset_baud_rate,
+	.set_line_ctrl = gigaset_set_line_ctrl,
+	.send_skb = gigaset_isoc_send_skb,
+	.handle_input = gigaset_isoc_input,
 };
 
 /* bas_gigaset_init
diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index 600c79b..3752bab 100644
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -130,9 +130,9 @@ static int if_open(struct tty_struct *tty, struct file *filp)
 	}
 	tty->driver_data = cs;
 
-	++cs->port.count;
+	atomic_inc(&cs->port.count);
 
-	if (cs->port.count == 1) {
+	if (atomic_read(&cs->port.count) == 1) {
 		tty_port_tty_set(&cs->port, tty);
 		cs->port.low_latency = 1;
 	}
@@ -156,9 +156,9 @@ static void if_close(struct tty_struct *tty, struct file *filp)
 
 	if (!cs->connected)
 		gig_dbg(DEBUG_IF, "not connected");	/* nothing to do */
-	else if (!cs->port.count)
+	else if (!atomic_read(&cs->port.count))
 		dev_warn(cs->dev, "%s: device not opened\n", __func__);
-	else if (!--cs->port.count)
+	else if (!atomic_dec_return(&cs->port.count))
 		tty_port_tty_set(&cs->port, NULL);
 
 	mutex_unlock(&cs->mutex);
diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
index 8c91fd5..14f13ce 100644
--- a/drivers/isdn/gigaset/ser-gigaset.c
+++ b/drivers/isdn/gigaset/ser-gigaset.c
@@ -453,22 +453,22 @@ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
 }
 
 static const struct gigaset_ops ops = {
-	gigaset_write_cmd,
-	gigaset_write_room,
-	gigaset_chars_in_buffer,
-	gigaset_brkchars,
-	gigaset_init_bchannel,
-	gigaset_close_bchannel,
-	gigaset_initbcshw,
-	gigaset_freebcshw,
-	gigaset_reinitbcshw,
-	gigaset_initcshw,
-	gigaset_freecshw,
-	gigaset_set_modem_ctrl,
-	gigaset_baud_rate,
-	gigaset_set_line_ctrl,
-	gigaset_m10x_send_skb,	/* asyncdata.c */
-	gigaset_m10x_input,	/* asyncdata.c */
+	.write_cmd = gigaset_write_cmd,
+	.write_room = gigaset_write_room,
+	.chars_in_buffer = gigaset_chars_in_buffer,
+	.brkchars = gigaset_brkchars,
+	.init_bchannel = gigaset_init_bchannel,
+	.close_bchannel = gigaset_close_bchannel,
+	.initbcshw = gigaset_initbcshw,
+	.freebcshw = gigaset_freebcshw,
+	.reinitbcshw = gigaset_reinitbcshw,
+	.initcshw = gigaset_initcshw,
+	.freecshw = gigaset_freecshw,
+	.set_modem_ctrl = gigaset_set_modem_ctrl,
+	.baud_rate = gigaset_baud_rate,
+	.set_line_ctrl = gigaset_set_line_ctrl,
+	.send_skb = gigaset_m10x_send_skb,	/* asyncdata.c */
+	.handle_input = gigaset_m10x_input,	/* asyncdata.c */
 };
 
 
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
index d0a41cb..b953e50 100644
--- a/drivers/isdn/gigaset/usb-gigaset.c
+++ b/drivers/isdn/gigaset/usb-gigaset.c
@@ -547,7 +547,7 @@ static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])
 	gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf);
 	memcpy(cs->hw.usb->bchars, buf, 6);
 	return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41,
-			       0, 0, &buf, 6, 2000);
+			       0, 0, buf, 6, 2000);
 }
 
 static void gigaset_freebcshw(struct bc_state *bcs)
@@ -869,22 +869,22 @@ static int gigaset_pre_reset(struct usb_interface *intf)
 }
 
 static const struct gigaset_ops ops = {
-	gigaset_write_cmd,
-	gigaset_write_room,
-	gigaset_chars_in_buffer,
-	gigaset_brkchars,
-	gigaset_init_bchannel,
-	gigaset_close_bchannel,
-	gigaset_initbcshw,
-	gigaset_freebcshw,
-	gigaset_reinitbcshw,
-	gigaset_initcshw,
-	gigaset_freecshw,
-	gigaset_set_modem_ctrl,
-	gigaset_baud_rate,
-	gigaset_set_line_ctrl,
-	gigaset_m10x_send_skb,
-	gigaset_m10x_input,
+	.write_cmd = gigaset_write_cmd,
+	.write_room = gigaset_write_room,
+	.chars_in_buffer = gigaset_chars_in_buffer,
+	.brkchars = gigaset_brkchars,
+	.init_bchannel = gigaset_init_bchannel,
+	.close_bchannel = gigaset_close_bchannel,
+	.initbcshw = gigaset_initbcshw,
+	.freebcshw = gigaset_freebcshw,
+	.reinitbcshw = gigaset_reinitbcshw,
+	.initcshw = gigaset_initcshw,
+	.freecshw = gigaset_freecshw,
+	.set_modem_ctrl = gigaset_set_modem_ctrl,
+	.baud_rate = gigaset_baud_rate,
+	.set_line_ctrl = gigaset_set_line_ctrl,
+	.send_skb = gigaset_m10x_send_skb,
+	.handle_input = gigaset_m10x_input,
 };
 
 /*
diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c
index 4d9b195..455075c 100644
--- a/drivers/isdn/hardware/avm/b1.c
+++ b/drivers/isdn/hardware/avm/b1.c
@@ -176,7 +176,7 @@ int b1_load_t4file(avmcard *card, capiloaddatapart *t4file)
 	}
 	if (left) {
 		if (t4file->user) {
-			if (copy_from_user(buf, dp, left))
+			if (left > sizeof buf || copy_from_user(buf, dp, left))
 				return -EFAULT;
 		} else {
 			memcpy(buf, dp, left);
@@ -224,7 +224,7 @@ int b1_load_config(avmcard *card, capiloaddatapart *config)
 	}
 	if (left) {
 		if (config->user) {
-			if (copy_from_user(buf, dp, left))
+			if (left > sizeof buf || copy_from_user(buf, dp, left))
 				return -EFAULT;
 		} else {
 			memcpy(buf, dp, left);
diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
index 9b856e1..fa03c92 100644
--- a/drivers/isdn/i4l/isdn_common.c
+++ b/drivers/isdn/i4l/isdn_common.c
@@ -1654,6 +1654,8 @@ isdn_ioctl(struct file *file, uint cmd, ulong arg)
 			} else
 				return -EINVAL;
 		case IIOCDBGVAR:
+			if (!capable(CAP_SYS_RAWIO))
+				return -EPERM;
 			if (arg) {
 				if (copy_to_user(argp, &dev, sizeof(ulong)))
 					return -EFAULT;
diff --git a/drivers/isdn/i4l/isdn_concap.c b/drivers/isdn/i4l/isdn_concap.c
index 91d5730..336523e 100644
--- a/drivers/isdn/i4l/isdn_concap.c
+++ b/drivers/isdn/i4l/isdn_concap.c
@@ -80,9 +80,9 @@ static int isdn_concap_dl_disconn_req(struct concap_proto *concap)
 }
 
 struct concap_device_ops isdn_concap_reliable_dl_dops = {
-	&isdn_concap_dl_data_req,
-	&isdn_concap_dl_connect_req,
-	&isdn_concap_dl_disconn_req
+	.data_req = &isdn_concap_dl_data_req,
+	.connect_req = &isdn_concap_dl_connect_req,
+	.disconn_req = &isdn_concap_dl_disconn_req
 };
 
 /* The following should better go into a dedicated source file such that
diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index 62f0688..38ceac5 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -378,15 +378,10 @@ isdn_ppp_release(int min, struct file *file)
 	is->slcomp = NULL;
 #endif
 #ifdef CONFIG_IPPP_FILTER
-	if (is->pass_filter) {
-		sk_unattached_filter_destroy(is->pass_filter);
-		is->pass_filter = NULL;
-	}
-
-	if (is->active_filter) {
-		sk_unattached_filter_destroy(is->active_filter);
-		is->active_filter = NULL;
-	}
+	kfree(is->pass_filter);
+	is->pass_filter = NULL;
+	kfree(is->active_filter);
+	is->active_filter = NULL;
 #endif
 
 /* TODO: if this was the previous master: link the stuff to the new master */
@@ -442,7 +437,7 @@ static int get_filter(void __user *arg, struct sock_filter **p)
 {
 	struct sock_fprog uprog;
 	struct sock_filter *code = NULL;
-	int len;
+	int len, err;
 
 	if (copy_from_user(&uprog, arg, sizeof(uprog)))
 		return -EFAULT;
@@ -458,6 +453,12 @@ static int get_filter(void __user *arg, struct sock_filter **p)
 	if (IS_ERR(code))
 		return PTR_ERR(code);
 
+	err = sk_chk_filter(code, uprog.len);
+	if (err) {
+		kfree(code);
+		return err;
+	}
+
 	*p = code;
 	return uprog.len;
 }
@@ -628,53 +629,25 @@ isdn_ppp_ioctl(int min, struct file *file, unsigned int cmd, unsigned long arg)
 #ifdef CONFIG_IPPP_FILTER
 	case PPPIOCSPASS:
 	{
-		struct sock_fprog_kern fprog;
 		struct sock_filter *code;
-		int err, len = get_filter(argp, &code);
-
+		int len = get_filter(argp, &code);
 		if (len < 0)
 			return len;
-
-		fprog.len = len;
-		fprog.filter = code;
-
-		if (is->pass_filter) {
-			sk_unattached_filter_destroy(is->pass_filter);
-			is->pass_filter = NULL;
-		}
-		if (fprog.filter != NULL)
-			err = sk_unattached_filter_create(&is->pass_filter,
-							  &fprog);
-		else
-			err = 0;
-		kfree(code);
-
-		return err;
+		kfree(is->pass_filter);
+		is->pass_filter = code;
+		is->pass_len = len;
+		break;
 	}
 	case PPPIOCSACTIVE:
 	{
-		struct sock_fprog_kern fprog;
 		struct sock_filter *code;
-		int err, len = get_filter(argp, &code);
-
+		int len = get_filter(argp, &code);
 		if (len < 0)
 			return len;
-
-		fprog.len = len;
-		fprog.filter = code;
-
-		if (is->active_filter) {
-			sk_unattached_filter_destroy(is->active_filter);
-			is->active_filter = NULL;
-		}
-		if (fprog.filter != NULL)
-			err = sk_unattached_filter_create(&is->active_filter,
-							  &fprog);
-		else
-			err = 0;
-		kfree(code);
-
-		return err;
+		kfree(is->active_filter);
+		is->active_filter = code;
+		is->active_len = len;
+		break;
 	}
 #endif /* CONFIG_IPPP_FILTER */
 	default:
@@ -1174,14 +1147,14 @@ isdn_ppp_push_higher(isdn_net_dev *net_dev, isdn_net_local *lp, struct sk_buff *
 	}
 
 	if (is->pass_filter
-	    && SK_RUN_FILTER(is->pass_filter, skb) == 0) {
+	    && sk_run_filter(skb, is->pass_filter) == 0) {
 		if (is->debug & 0x2)
 			printk(KERN_DEBUG "IPPP: inbound frame filtered.\n");
 		kfree_skb(skb);
 		return;
 	}
 	if (!(is->active_filter
-	      && SK_RUN_FILTER(is->active_filter, skb) == 0)) {
+	      && sk_run_filter(skb, is->active_filter) == 0)) {
 		if (is->debug & 0x2)
 			printk(KERN_DEBUG "IPPP: link-active filter: resetting huptimer.\n");
 		lp->huptimer = 0;
@@ -1320,14 +1293,14 @@ isdn_ppp_xmit(struct sk_buff *skb, struct net_device *netdev)
 	}
 
 	if (ipt->pass_filter
-	    && SK_RUN_FILTER(ipt->pass_filter, skb) == 0) {
+	    && sk_run_filter(skb, ipt->pass_filter) == 0) {
 		if (ipt->debug & 0x4)
 			printk(KERN_DEBUG "IPPP: outbound frame filtered.\n");
 		kfree_skb(skb);
 		goto unlock;
 	}
 	if (!(ipt->active_filter
-	      && SK_RUN_FILTER(ipt->active_filter, skb) == 0)) {
+	      && sk_run_filter(skb, ipt->active_filter) == 0)) {
 		if (ipt->debug & 0x4)
 			printk(KERN_DEBUG "IPPP: link-active filter: resetting huptimer.\n");
 		lp->huptimer = 0;
@@ -1517,9 +1490,9 @@ int isdn_ppp_autodial_filter(struct sk_buff *skb, isdn_net_local *lp)
 	}
 
 	drop |= is->pass_filter
-		&& SK_RUN_FILTER(is->pass_filter, skb) == 0;
+		&& sk_run_filter(skb, is->pass_filter) == 0;
 	drop |= is->active_filter
-		&& SK_RUN_FILTER(is->active_filter, skb) == 0;
+		&& sk_run_filter(skb, is->active_filter) == 0;
 
 	skb_push(skb, IPPP_MAX_HEADER - 4);
 	return drop;
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
index 3c5f249..5fac4d0 100644
--- a/drivers/isdn/i4l/isdn_tty.c
+++ b/drivers/isdn/i4l/isdn_tty.c
@@ -1508,9 +1508,9 @@ isdn_tty_open(struct tty_struct *tty, struct file *filp)
 
 #ifdef ISDN_DEBUG_MODEM_OPEN
 	printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
-	       port->count);
+	       atomic_read(&port->count));
 #endif
-	port->count++;
+	atomic_inc(&port->count);
 	port->tty = tty;
 	/*
 	 * Start up serial port
@@ -1554,7 +1554,7 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
 #endif
 		return;
 	}
-	if ((tty->count == 1) && (port->count != 1)) {
+	if ((tty->count == 1) && (atomic_read(&port->count) != 1)) {
 		/*
 		 * Uh, oh.  tty->count is 1, which means that the tty
 		 * structure will be freed.  Info->count should always
@@ -1563,15 +1563,15 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
 		 * serial port won't be shutdown.
 		 */
 		printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
-		       "info->count is %d\n", port->count);
-		port->count = 1;
+		       "info->count is %d\n", atomic_read(&port->count));
+		atomic_set(&port->count, 1);
 	}
-	if (--port->count < 0) {
+	if (atomic_dec_return(&port->count) < 0) {
 		printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
-		       info->line, port->count);
-		port->count = 0;
+		       info->line, atomic_read(&port->count));
+		atomic_set(&port->count, 0);
 	}
-	if (port->count) {
+	if (atomic_read(&port->count)) {
 #ifdef ISDN_DEBUG_MODEM_OPEN
 		printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
 #endif
@@ -1625,7 +1625,7 @@ isdn_tty_hangup(struct tty_struct *tty)
 	if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
 		return;
 	isdn_tty_shutdown(info);
-	port->count = 0;
+	atomic_set(&port->count, 0);
 	port->flags &= ~ASYNC_NORMAL_ACTIVE;
 	port->tty = NULL;
 	wake_up_interruptible(&port->open_wait);
@@ -1970,7 +1970,7 @@ isdn_tty_find_icall(int di, int ch, setup_parm *setup)
 	for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
 		modem_info *info = &dev->mdm.info[i];
 
-		if (info->port.count == 0)
+		if (atomic_read(&info->port.count) == 0)
 			continue;
 		if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) &&  /* SI1 is matching */
 		    (info->emu.mdmreg[REG_SI2] == si2))	{         /* SI2 is matching */
diff --git a/drivers/isdn/i4l/isdn_x25iface.c b/drivers/isdn/i4l/isdn_x25iface.c
index e2d4e58..40cd045 100644
--- a/drivers/isdn/i4l/isdn_x25iface.c
+++ b/drivers/isdn/i4l/isdn_x25iface.c
@@ -53,14 +53,14 @@ static int isdn_x25iface_disconn_ind(struct concap_proto *);
 
 
 static struct concap_proto_ops ix25_pops = {
-	&isdn_x25iface_proto_new,
-	&isdn_x25iface_proto_del,
-	&isdn_x25iface_proto_restart,
-	&isdn_x25iface_proto_close,
-	&isdn_x25iface_xmit,
-	&isdn_x25iface_receive,
-	&isdn_x25iface_connect_ind,
-	&isdn_x25iface_disconn_ind
+	.proto_new = &isdn_x25iface_proto_new,
+	.proto_del = &isdn_x25iface_proto_del,
+	.restart = &isdn_x25iface_proto_restart,
+	.close = &isdn_x25iface_proto_close,
+	.encap_and_xmit = &isdn_x25iface_xmit,
+	.data_ind = &isdn_x25iface_receive,
+	.connect_ind = &isdn_x25iface_connect_ind,
+	.disconn_ind = &isdn_x25iface_disconn_ind
 };
 
 /* error message helper function */
diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c
index 6a7447c..cae33fe 100644
--- a/drivers/isdn/icn/icn.c
+++ b/drivers/isdn/icn/icn.c
@@ -1045,7 +1045,7 @@ icn_writecmd(const u_char *buf, int len, int user, icn_card *card)
 		if (count > len)
 			count = len;
 		if (user) {
-			if (copy_from_user(msg, buf, count))
+			if (count > sizeof msg || copy_from_user(msg, buf, count))
 				return -EFAULT;
 		} else
 			memcpy(msg, buf, count);
diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c
index a4f05c5..1433bc5 100644
--- a/drivers/isdn/mISDN/dsp_cmx.c
+++ b/drivers/isdn/mISDN/dsp_cmx.c
@@ -1628,7 +1628,7 @@ unsigned long	dsp_spl_jiffies; /* calculate the next time to fire */
 static u16	dsp_count; /* last sample count */
 static int	dsp_count_valid; /* if we have last sample count */
 
-void
+void __intentional_overflow(-1)
 dsp_cmx_send(void *arg)
 {
 	struct dsp_conf *conf;
diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c
index f58a354..fbae176 100644
--- a/drivers/leds/leds-clevo-mail.c
+++ b/drivers/leds/leds-clevo-mail.c
@@ -40,7 +40,7 @@ static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
  * detected as working, but in reality it is not) as low as
  * possible.
  */
-static struct dmi_system_id clevo_mail_led_dmi_table[] __initdata = {
+static struct dmi_system_id clevo_mail_led_dmi_table[] __initconst = {
 	{
 		.callback = clevo_mail_led_dmi_callback,
 		.ident = "Clevo D410J",
diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c
index 2eb3ef6..295891f 100644
--- a/drivers/leds/leds-ss4200.c
+++ b/drivers/leds/leds-ss4200.c
@@ -91,7 +91,7 @@ MODULE_PARM_DESC(nodetect, "Skip DMI-based hardware detection");
  * detected as working, but in reality it is not) as low as
  * possible.
  */
-static struct dmi_system_id nas_led_whitelist[] __initdata = {
+static struct dmi_system_id nas_led_whitelist[] __initconst = {
 	{
 		.callback = ss4200_led_dmi_callback,
 		.ident = "Intel SS4200-E",
diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
index 0bf1e4e..b4bf44e 100644
--- a/drivers/lguest/core.c
+++ b/drivers/lguest/core.c
@@ -97,9 +97,17 @@ static __init int map_switcher(void)
 	 * The end address needs +1 because __get_vm_area allocates an
 	 * extra guard page, so we need space for that.
 	 */
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE,
+				     VM_ALLOC | VM_KERNEXEC, switcher_addr, switcher_addr
+				     + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE);
+#else
 	switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE,
 				     VM_ALLOC, switcher_addr, switcher_addr
 				     + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE);
+#endif
+
 	if (!switcher_vma) {
 		err = -ENOMEM;
 		printk("lguest: could not map switcher pages high\n");
@@ -124,7 +132,7 @@ static __init int map_switcher(void)
 	 * Now the Switcher is mapped at the right address, we can't fail!
 	 * Copy in the compiled-in Switcher code (from x86/switcher_32.S).
 	 */
-	memcpy(switcher_vma->addr, start_switcher_text,
+	memcpy(switcher_vma->addr, ktla_ktva(start_switcher_text),
 	       end_switcher_text - start_switcher_text);
 
 	printk(KERN_INFO "lguest: mapped switcher at %p\n",
diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c
index e8b55c3..3514c37 100644
--- a/drivers/lguest/page_tables.c
+++ b/drivers/lguest/page_tables.c
@@ -559,7 +559,7 @@ void pin_page(struct lg_cpu *cpu, unsigned long vaddr)
 /*:*/
 
 #ifdef CONFIG_X86_PAE
-static void release_pmd(pmd_t *spmd)
+static void __intentional_overflow(-1) release_pmd(pmd_t *spmd)
 {
 	/* If the entry's not present, there's nothing to release. */
 	if (pmd_flags(*spmd) & _PAGE_PRESENT) {
diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c
index 922a1ac..9dd0c2a 100644
--- a/drivers/lguest/x86/core.c
+++ b/drivers/lguest/x86/core.c
@@ -59,7 +59,7 @@ static struct {
 /* Offset from where switcher.S was compiled to where we've copied it */
 static unsigned long switcher_offset(void)
 {
-	return switcher_addr - (unsigned long)start_switcher_text;
+	return switcher_addr - (unsigned long)ktla_ktva(start_switcher_text);
 }
 
 /* This cpu's struct lguest_pages (after the Switcher text page) */
@@ -99,7 +99,13 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages)
 	 * These copies are pretty cheap, so we do them unconditionally: */
 	/* Save the current Host top-level page directory.
 	 */
+
+#ifdef CONFIG_PAX_PER_CPU_PGD
+	pages->state.host_cr3 = read_cr3();
+#else
 	pages->state.host_cr3 = __pa(current->mm->pgd);
+#endif
+
 	/*
 	 * Set up the Guest's page tables to see this CPU's pages (and no
 	 * other CPU's pages).
@@ -477,7 +483,7 @@ void __init lguest_arch_host_init(void)
 	 * compiled-in switcher code and the high-mapped copy we just made.
 	 */
 	for (i = 0; i < IDT_ENTRIES; i++)
-		default_idt_entries[i] += switcher_offset();
+		default_idt_entries[i] = ktla_ktva(default_idt_entries[i]) + switcher_offset();
 
 	/*
 	 * Set up the Switcher's per-cpu areas.
@@ -560,7 +566,7 @@ void __init lguest_arch_host_init(void)
 	 * it will be undisturbed when we switch.  To change %cs and jump we
 	 * need this structure to feed to Intel's "lcall" instruction.
 	 */
-	lguest_entry.offset = (long)switch_to_guest + switcher_offset();
+	lguest_entry.offset = (long)ktla_ktva(switch_to_guest) + switcher_offset();
 	lguest_entry.segment = LGUEST_CS;
 
 	/*
diff --git a/drivers/lguest/x86/switcher_32.S b/drivers/lguest/x86/switcher_32.S
index 40634b0..4f5855e 100644
--- a/drivers/lguest/x86/switcher_32.S
+++ b/drivers/lguest/x86/switcher_32.S
@@ -87,6 +87,7 @@
 #include <asm/page.h>
 #include <asm/segment.h>
 #include <asm/lguest.h>
+#include <asm/processor-flags.h>
 
 // We mark the start of the code to copy
 // It's placed in .text tho it's never run here
@@ -149,6 +150,13 @@ ENTRY(switch_to_guest)
 	// Changes type when we load it: damn Intel!
 	// For after we switch over our page tables
 	// That entry will be read-only: we'd crash.
+
+#ifdef CONFIG_PAX_KERNEXEC
+	mov	%cr0, %edx
+	xor	$X86_CR0_WP, %edx
+	mov	%edx, %cr0
+#endif
+
 	movl	$(GDT_ENTRY_TSS*8), %edx
 	ltr	%dx
 
@@ -157,9 +165,15 @@ ENTRY(switch_to_guest)
 	// Let's clear it again for our return.
 	// The GDT descriptor of the Host
 	// Points to the table after two "size" bytes
-	movl	(LGUEST_PAGES_host_gdt_desc+2)(%eax), %edx
+	movl	(LGUEST_PAGES_host_gdt_desc+2)(%eax), %eax
 	// Clear "used" from type field (byte 5, bit 2)
-	andb	$0xFD, (GDT_ENTRY_TSS*8 + 5)(%edx)
+	andb	$0xFD, (GDT_ENTRY_TSS*8 + 5)(%eax)
+
+#ifdef CONFIG_PAX_KERNEXEC
+	mov	%cr0, %eax
+	xor	$X86_CR0_WP, %eax
+	mov	%eax, %cr0
+#endif
 
 	// Once our page table's switched, the Guest is live!
 	// The Host fades as we run this final step.
@@ -295,13 +309,12 @@ deliver_to_host:
 	// I consulted gcc, and it gave
 	// These instructions, which I gladly credit:
 	leal	(%edx,%ebx,8), %eax
-	movzwl	(%eax),%edx
-	movl	4(%eax), %eax
-	xorw	%ax, %ax
-	orl	%eax, %edx
+	movl	4(%eax), %edx
+	movw	(%eax), %dx
 	// Now the address of the handler's in %edx
 	// We call it now: its "iret" drops us home.
-	jmp	*%edx
+	ljmp	$__KERNEL_CS, $1f
+1:	jmp	*%edx
 
 // Every interrupt can come to us here
 // But we must truly tell each apart.
diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h
index a08e3ee..df8ade2 100644
--- a/drivers/md/bcache/closure.h
+++ b/drivers/md/bcache/closure.h
@@ -238,7 +238,7 @@ static inline void closure_set_stopped(struct closure *cl)
 static inline void set_closure_fn(struct closure *cl, closure_fn *fn,
 				  struct workqueue_struct *wq)
 {
-	BUG_ON(object_is_on_stack(cl));
+	BUG_ON(object_starts_on_stack(cl));
 	closure_set_ip(cl);
 	cl->fn = fn;
 	cl->wq = wq;
diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
index 67f8b31..9418f2b 100644
--- a/drivers/md/bitmap.c
+++ b/drivers/md/bitmap.c
@@ -1775,7 +1775,7 @@ void bitmap_status(struct seq_file *seq, struct bitmap *bitmap)
 		   chunk_kb ? "KB" : "B");
 	if (bitmap->storage.file) {
 		seq_printf(seq, ", file: ");
-		seq_path(seq, &bitmap->storage.file->f_path, " \t\n");
+		seq_path(seq, &bitmap->storage.file->f_path, " \t\n\\");
 	}
 
 	seq_printf(seq, "\n");
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
index 5152142..623d141 100644
--- a/drivers/md/dm-ioctl.c
+++ b/drivers/md/dm-ioctl.c
@@ -1769,7 +1769,7 @@ static int validate_params(uint cmd, struct dm_ioctl *param)
 	    cmd == DM_LIST_VERSIONS_CMD)
 		return 0;
 
-	if ((cmd == DM_DEV_CREATE_CMD)) {
+	if (cmd == DM_DEV_CREATE_CMD) {
 		if (!*param->name) {
 			DMWARN("name not supplied when creating device");
 			return -EINVAL;
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index 7dfdb5c..4caada6 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -40,7 +40,7 @@ enum dm_raid1_error {
 
 struct mirror {
 	struct mirror_set *ms;
-	atomic_t error_count;
+	atomic_unchecked_t error_count;
 	unsigned long error_type;
 	struct dm_dev *dev;
 	sector_t offset;
@@ -186,7 +186,7 @@ static struct mirror *get_valid_mirror(struct mirror_set *ms)
 	struct mirror *m;
 
 	for (m = ms->mirror; m < ms->mirror + ms->nr_mirrors; m++)
-		if (!atomic_read(&m->error_count))
+		if (!atomic_read_unchecked(&m->error_count))
 			return m;
 
 	return NULL;
@@ -218,7 +218,7 @@ static void fail_mirror(struct mirror *m, enum dm_raid1_error error_type)
 	 * simple way to tell if a device has encountered
 	 * errors.
 	 */
-	atomic_inc(&m->error_count);
+	atomic_inc_unchecked(&m->error_count);
 
 	if (test_and_set_bit(error_type, &m->error_type))
 		return;
@@ -409,7 +409,7 @@ static struct mirror *choose_mirror(struct mirror_set *ms, sector_t sector)
 	struct mirror *m = get_default_mirror(ms);
 
 	do {
-		if (likely(!atomic_read(&m->error_count)))
+		if (likely(!atomic_read_unchecked(&m->error_count)))
 			return m;
 
 		if (m-- == ms->mirror)
@@ -423,7 +423,7 @@ static int default_ok(struct mirror *m)
 {
 	struct mirror *default_mirror = get_default_mirror(m->ms);
 
-	return !atomic_read(&default_mirror->error_count);
+	return !atomic_read_unchecked(&default_mirror->error_count);
 }
 
 static int mirror_available(struct mirror_set *ms, struct bio *bio)
@@ -560,7 +560,7 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads)
 		 */
 		if (likely(region_in_sync(ms, region, 1)))
 			m = choose_mirror(ms, bio->bi_iter.bi_sector);
-		else if (m && atomic_read(&m->error_count))
+		else if (m && atomic_read_unchecked(&m->error_count))
 			m = NULL;
 
 		if (likely(m))
@@ -927,7 +927,7 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
 	}
 
 	ms->mirror[mirror].ms = ms;
-	atomic_set(&(ms->mirror[mirror].error_count), 0);
+	atomic_set_unchecked(&(ms->mirror[mirror].error_count), 0);
 	ms->mirror[mirror].error_type = 0;
 	ms->mirror[mirror].offset = offset;
 
@@ -1342,7 +1342,7 @@ static void mirror_resume(struct dm_target *ti)
  */
 static char device_status_char(struct mirror *m)
 {
-	if (!atomic_read(&(m->error_count)))
+	if (!atomic_read_unchecked(&(m->error_count)))
 		return 'A';
 
 	return (test_bit(DM_RAID1_FLUSH_ERROR, &(m->error_type))) ? 'F' :
diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
index 28a9012..9c0f6a5 100644
--- a/drivers/md/dm-stats.c
+++ b/drivers/md/dm-stats.c
@@ -382,7 +382,7 @@ do_sync_free:
 		synchronize_rcu_expedited();
 		dm_stat_free(&s->rcu_head);
 	} else {
-		ACCESS_ONCE(dm_stat_need_rcu_barrier) = 1;
+		ACCESS_ONCE_RW(dm_stat_need_rcu_barrier) = 1;
 		call_rcu(&s->rcu_head, dm_stat_free);
 	}
 	return 0;
@@ -554,8 +554,8 @@ void dm_stats_account_io(struct dm_stats *stats, unsigned long bi_rw,
 				       ((bi_rw & (REQ_WRITE | REQ_DISCARD)) ==
 					(ACCESS_ONCE(last->last_rw) & (REQ_WRITE | REQ_DISCARD)))
 				       ));
-		ACCESS_ONCE(last->last_sector) = end_sector;
-		ACCESS_ONCE(last->last_rw) = bi_rw;
+		ACCESS_ONCE_RW(last->last_sector) = end_sector;
+		ACCESS_ONCE_RW(last->last_rw) = bi_rw;
 	}
 
 	rcu_read_lock();
diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
index d1600d2..4c3af3a 100644
--- a/drivers/md/dm-stripe.c
+++ b/drivers/md/dm-stripe.c
@@ -21,7 +21,7 @@ struct stripe {
 	struct dm_dev *dev;
 	sector_t physical_start;
 
-	atomic_t error_count;
+	atomic_unchecked_t error_count;
 };
 
 struct stripe_c {
@@ -186,7 +186,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv)
 			kfree(sc);
 			return r;
 		}
-		atomic_set(&(sc->stripe[i].error_count), 0);
+		atomic_set_unchecked(&(sc->stripe[i].error_count), 0);
 	}
 
 	ti->private = sc;
@@ -330,7 +330,7 @@ static void stripe_status(struct dm_target *ti, status_type_t type,
 		DMEMIT("%d ", sc->stripes);
 		for (i = 0; i < sc->stripes; i++)  {
 			DMEMIT("%s ", sc->stripe[i].dev->name);
-			buffer[i] = atomic_read(&(sc->stripe[i].error_count)) ?
+			buffer[i] = atomic_read_unchecked(&(sc->stripe[i].error_count)) ?
 				'D' : 'A';
 		}
 		buffer[i] = '\0';
@@ -375,8 +375,8 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error)
 	 */
 	for (i = 0; i < sc->stripes; i++)
 		if (!strcmp(sc->stripe[i].dev->name, major_minor)) {
-			atomic_inc(&(sc->stripe[i].error_count));
-			if (atomic_read(&(sc->stripe[i].error_count)) <
+			atomic_inc_unchecked(&(sc->stripe[i].error_count));
+			if (atomic_read_unchecked(&(sc->stripe[i].error_count)) <
 			    DM_IO_ERROR_THRESHOLD)
 				schedule_work(&sc->trigger_event);
 		}
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 9227910..f51ca38 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -274,7 +274,7 @@ static struct dm_dev_internal *find_device(struct list_head *l, dev_t dev)
 static int open_dev(struct dm_dev_internal *d, dev_t dev,
 		    struct mapped_device *md)
 {
-	static char *_claim_ptr = "I belong to device-mapper";
+	static char _claim_ptr[] = "I belong to device-mapper";
 	struct block_device *bdev;
 
 	int r;
@@ -342,7 +342,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
 	if (!dev_size)
 		return 0;
 
-	if ((start >= dev_size) || (start + len > dev_size)) {
+	if ((start >= dev_size) || (len > dev_size - start)) {
 		DMWARN("%s: %s too small for target: "
 		       "start=%llu, len=%llu, dev_size=%llu",
 		       dm_device_name(ti->table->md), bdevname(bdev, b),
diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
index e9d33ad..dae9880d 100644
--- a/drivers/md/dm-thin-metadata.c
+++ b/drivers/md/dm-thin-metadata.c
@@ -404,7 +404,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd)
 {
 	pmd->info.tm = pmd->tm;
 	pmd->info.levels = 2;
-	pmd->info.value_type.context = pmd->data_sm;
+	pmd->info.value_type.context = (dm_space_map_no_const *)pmd->data_sm;
 	pmd->info.value_type.size = sizeof(__le64);
 	pmd->info.value_type.inc = data_block_inc;
 	pmd->info.value_type.dec = data_block_dec;
@@ -423,7 +423,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd)
 
 	pmd->bl_info.tm = pmd->tm;
 	pmd->bl_info.levels = 1;
-	pmd->bl_info.value_type.context = pmd->data_sm;
+	pmd->bl_info.value_type.context = (dm_space_map_no_const *)pmd->data_sm;
 	pmd->bl_info.value_type.size = sizeof(__le64);
 	pmd->bl_info.value_type.inc = data_block_inc;
 	pmd->bl_info.value_type.dec = data_block_dec;
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 32b958d..34011e8 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -180,9 +180,9 @@ struct mapped_device {
 	/*
 	 * Event handling.
 	 */
-	atomic_t event_nr;
+	atomic_unchecked_t event_nr;
 	wait_queue_head_t eventq;
-	atomic_t uevent_seq;
+	atomic_unchecked_t uevent_seq;
 	struct list_head uevent_list;
 	spinlock_t uevent_lock; /* Protect access to uevent_list */
 
@@ -1952,8 +1952,8 @@ static struct mapped_device *alloc_dev(int minor)
 	spin_lock_init(&md->deferred_lock);
 	atomic_set(&md->holders, 1);
 	atomic_set(&md->open_count, 0);
-	atomic_set(&md->event_nr, 0);
-	atomic_set(&md->uevent_seq, 0);
+	atomic_set_unchecked(&md->event_nr, 0);
+	atomic_set_unchecked(&md->uevent_seq, 0);
 	INIT_LIST_HEAD(&md->uevent_list);
 	spin_lock_init(&md->uevent_lock);
 
@@ -2107,7 +2107,7 @@ static void event_callback(void *context)
 
 	dm_send_uevents(&uevents, &disk_to_dev(md->disk)->kobj);
 
-	atomic_inc(&md->event_nr);
+	atomic_inc_unchecked(&md->event_nr);
 	wake_up(&md->eventq);
 }
 
@@ -2800,18 +2800,18 @@ int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
 
 uint32_t dm_next_uevent_seq(struct mapped_device *md)
 {
-	return atomic_add_return(1, &md->uevent_seq);
+	return atomic_add_return_unchecked(1, &md->uevent_seq);
 }
 
 uint32_t dm_get_event_nr(struct mapped_device *md)
 {
-	return atomic_read(&md->event_nr);
+	return atomic_read_unchecked(&md->event_nr);
 }
 
 int dm_wait_event(struct mapped_device *md, int event_nr)
 {
 	return wait_event_interruptible(md->eventq,
-			(event_nr != atomic_read(&md->event_nr)));
+			(event_nr != atomic_read_unchecked(&md->event_nr)));
 }
 
 void dm_uevent_add(struct mapped_device *md, struct list_head *elist)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 32fc19c..cb6eba3 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -194,10 +194,10 @@ EXPORT_SYMBOL_GPL(bio_clone_mddev);
  *  start build, activate spare
  */
 static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters);
-static atomic_t md_event_count;
+static atomic_unchecked_t md_event_count;
 void md_new_event(struct mddev *mddev)
 {
-	atomic_inc(&md_event_count);
+	atomic_inc_unchecked(&md_event_count);
 	wake_up(&md_event_waiters);
 }
 EXPORT_SYMBOL_GPL(md_new_event);
@@ -207,7 +207,7 @@ EXPORT_SYMBOL_GPL(md_new_event);
  */
 static void md_new_event_inintr(struct mddev *mddev)
 {
-	atomic_inc(&md_event_count);
+	atomic_inc_unchecked(&md_event_count);
 	wake_up(&md_event_waiters);
 }
 
@@ -1462,7 +1462,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_
 	if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE) &&
 	    (le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET))
 		rdev->new_data_offset += (s32)le32_to_cpu(sb->new_offset);
-	atomic_set(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read));
+	atomic_set_unchecked(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read));
 
 	rdev->sb_size = le32_to_cpu(sb->max_dev) * 2 + 256;
 	bmask = queue_logical_block_size(rdev->bdev->bd_disk->queue)-1;
@@ -1713,7 +1713,7 @@ static void super_1_sync(struct mddev *mddev, struct md_rdev *rdev)
 	else
 		sb->resync_offset = cpu_to_le64(0);
 
-	sb->cnt_corrected_read = cpu_to_le32(atomic_read(&rdev->corrected_errors));
+	sb->cnt_corrected_read = cpu_to_le32(atomic_read_unchecked(&rdev->corrected_errors));
 
 	sb->raid_disks = cpu_to_le32(mddev->raid_disks);
 	sb->size = cpu_to_le64(mddev->dev_sectors);
@@ -2725,7 +2725,7 @@ __ATTR(state, S_IRUGO|S_IWUSR, state_show, state_store);
 static ssize_t
 errors_show(struct md_rdev *rdev, char *page)
 {
-	return sprintf(page, "%d\n", atomic_read(&rdev->corrected_errors));
+	return sprintf(page, "%d\n", atomic_read_unchecked(&rdev->corrected_errors));
 }
 
 static ssize_t
@@ -2734,7 +2734,7 @@ errors_store(struct md_rdev *rdev, const char *buf, size_t len)
 	char *e;
 	unsigned long n = simple_strtoul(buf, &e, 10);
 	if (*buf && (*e == 0 || *e == '\n')) {
-		atomic_set(&rdev->corrected_errors, n);
+		atomic_set_unchecked(&rdev->corrected_errors, n);
 		return len;
 	}
 	return -EINVAL;
@@ -3183,8 +3183,8 @@ int md_rdev_init(struct md_rdev *rdev)
 	rdev->sb_loaded = 0;
 	rdev->bb_page = NULL;
 	atomic_set(&rdev->nr_pending, 0);
-	atomic_set(&rdev->read_errors, 0);
-	atomic_set(&rdev->corrected_errors, 0);
+	atomic_set_unchecked(&rdev->read_errors, 0);
+	atomic_set_unchecked(&rdev->corrected_errors, 0);
 
 	INIT_LIST_HEAD(&rdev->same_set);
 	init_waitqueue_head(&rdev->blocked_wait);
@@ -7068,7 +7068,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
 
 		spin_unlock(&pers_lock);
 		seq_printf(seq, "\n");
-		seq->poll_event = atomic_read(&md_event_count);
+		seq->poll_event = atomic_read_unchecked(&md_event_count);
 		return 0;
 	}
 	if (v == (void*)2) {
@@ -7171,7 +7171,7 @@ static int md_seq_open(struct inode *inode, struct file *file)
 		return error;
 
 	seq = file->private_data;
-	seq->poll_event = atomic_read(&md_event_count);
+	seq->poll_event = atomic_read_unchecked(&md_event_count);
 	return error;
 }
 
@@ -7188,7 +7188,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
 	/* always allow read */
 	mask = POLLIN | POLLRDNORM;
 
-	if (seq->poll_event != atomic_read(&md_event_count))
+	if (seq->poll_event != atomic_read_unchecked(&md_event_count))
 		mask |= POLLERR | POLLPRI;
 	return mask;
 }
@@ -7232,7 +7232,7 @@ static int is_mddev_idle(struct mddev *mddev, int init)
 		struct gendisk *disk = rdev->bdev->bd_contains->bd_disk;
 		curr_events = (int)part_stat_read(&disk->part0, sectors[0]) +
 			      (int)part_stat_read(&disk->part0, sectors[1]) -
-			      atomic_read(&disk->sync_io);
+			      atomic_read_unchecked(&disk->sync_io);
 		/* sync IO will cause sync_io to increase before the disk_stats
 		 * as sync_io is counted when a request starts, and
 		 * disk_stats is counted when it completes.
diff --git a/drivers/md/md.h b/drivers/md/md.h
index a49d991..3582bb7 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -94,13 +94,13 @@ struct md_rdev {
 					 * only maintained for arrays that
 					 * support hot removal
 					 */
-	atomic_t	read_errors;	/* number of consecutive read errors that
+	atomic_unchecked_t	read_errors;	/* number of consecutive read errors that
 					 * we have tried to ignore.
 					 */
 	struct timespec last_read_error;	/* monotonic time since our
 						 * last read error
 						 */
-	atomic_t	corrected_errors; /* number of corrected read errors,
+	atomic_unchecked_t	corrected_errors; /* number of corrected read errors,
 					   * for reporting to userspace and storing
 					   * in superblock.
 					   */
@@ -449,7 +449,7 @@ static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
 
 static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
 {
-        atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
+	atomic_add_unchecked(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
 }
 
 struct md_personality
diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
index 786b689..ea8c956 100644
--- a/drivers/md/persistent-data/dm-space-map-metadata.c
+++ b/drivers/md/persistent-data/dm-space-map-metadata.c
@@ -679,7 +679,7 @@ static int sm_metadata_extend(struct dm_space_map *sm, dm_block_t extra_blocks)
 	 * Flick into a mode where all blocks get allocated in the new area.
 	 */
 	smm->begin = old_len;
-	memcpy(sm, &bootstrap_ops, sizeof(*sm));
+	memcpy((void *)sm, &bootstrap_ops, sizeof(*sm));
 
 	/*
 	 * Extend.
@@ -710,7 +710,7 @@ out:
 	/*
 	 * Switch back to normal behaviour.
 	 */
-	memcpy(sm, &ops, sizeof(*sm));
+	memcpy((void *)sm, &ops, sizeof(*sm));
 	return r;
 }
 
diff --git a/drivers/md/persistent-data/dm-space-map.h b/drivers/md/persistent-data/dm-space-map.h
index 3e6d115..ffecdeb 100644
--- a/drivers/md/persistent-data/dm-space-map.h
+++ b/drivers/md/persistent-data/dm-space-map.h
@@ -71,6 +71,7 @@ struct dm_space_map {
 					   dm_sm_threshold_fn fn,
 					   void *context);
 };
+typedef struct dm_space_map __no_const dm_space_map_no_const;
 
 /*----------------------------------------------------------------*/
 
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index d7690f8..3db9ef1 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1931,7 +1931,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
 			if (r1_sync_page_io(rdev, sect, s,
 					    bio->bi_io_vec[idx].bv_page,
 					    READ) != 0)
-				atomic_add(s, &rdev->corrected_errors);
+				atomic_add_unchecked(s, &rdev->corrected_errors);
 		}
 		sectors -= s;
 		sect += s;
@@ -2165,7 +2165,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
 			    test_bit(In_sync, &rdev->flags)) {
 				if (r1_sync_page_io(rdev, sect, s,
 						    conf->tmppage, READ)) {
-					atomic_add(s, &rdev->corrected_errors);
+					atomic_add_unchecked(s, &rdev->corrected_errors);
 					printk(KERN_INFO
 					       "md/raid1:%s: read error corrected "
 					       "(%d sectors at %llu on %s)\n",
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index a46124e..caf0bd55 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1948,7 +1948,7 @@ static void end_sync_read(struct bio *bio, int error)
 		/* The write handler will notice the lack of
 		 * R10BIO_Uptodate and record any errors etc
 		 */
-		atomic_add(r10_bio->sectors,
+		atomic_add_unchecked(r10_bio->sectors,
 			   &conf->mirrors[d].rdev->corrected_errors);
 
 	/* for reconstruct, we always reschedule after a read.
@@ -2306,7 +2306,7 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev)
 {
 	struct timespec cur_time_mon;
 	unsigned long hours_since_last;
-	unsigned int read_errors = atomic_read(&rdev->read_errors);
+	unsigned int read_errors = atomic_read_unchecked(&rdev->read_errors);
 
 	ktime_get_ts(&cur_time_mon);
 
@@ -2328,9 +2328,9 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev)
 	 * overflowing the shift of read_errors by hours_since_last.
 	 */
 	if (hours_since_last >= 8 * sizeof(read_errors))
-		atomic_set(&rdev->read_errors, 0);
+		atomic_set_unchecked(&rdev->read_errors, 0);
 	else
-		atomic_set(&rdev->read_errors, read_errors >> hours_since_last);
+		atomic_set_unchecked(&rdev->read_errors, read_errors >> hours_since_last);
 }
 
 static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector,
@@ -2384,8 +2384,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
 		return;
 
 	check_decay_read_errors(mddev, rdev);
-	atomic_inc(&rdev->read_errors);
-	if (atomic_read(&rdev->read_errors) > max_read_errors) {
+	atomic_inc_unchecked(&rdev->read_errors);
+	if (atomic_read_unchecked(&rdev->read_errors) > max_read_errors) {
 		char b[BDEVNAME_SIZE];
 		bdevname(rdev->bdev, b);
 
@@ -2393,7 +2393,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
 		       "md/raid10:%s: %s: Raid device exceeded "
 		       "read_error threshold [cur %d:max %d]\n",
 		       mdname(mddev), b,
-		       atomic_read(&rdev->read_errors), max_read_errors);
+		       atomic_read_unchecked(&rdev->read_errors), max_read_errors);
 		printk(KERN_NOTICE
 		       "md/raid10:%s: %s: Failing raid device\n",
 		       mdname(mddev), b);
@@ -2548,7 +2548,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
 					       sect +
 					       choose_data_offset(r10_bio, rdev)),
 				       bdevname(rdev->bdev, b));
-				atomic_add(s, &rdev->corrected_errors);
+				atomic_add_unchecked(s, &rdev->corrected_errors);
 			}
 
 			rdev_dec_pending(rdev, mddev);
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 183588b..0eedcfa 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -1731,6 +1731,10 @@ static int grow_one_stripe(struct r5conf *conf, int hash)
 	return 1;
 }
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+static atomic_unchecked_t raid5_cache_id = ATOMIC_INIT(0);
+#endif
+
 static int grow_stripes(struct r5conf *conf, int num)
 {
 	struct kmem_cache *sc;
@@ -1742,7 +1746,11 @@ static int grow_stripes(struct r5conf *conf, int num)
 			"raid%d-%s", conf->level, mdname(conf->mddev));
 	else
 		sprintf(conf->cache_name[0],
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+			"raid%d-%08lx", conf->level, atomic_inc_return_unchecked(&raid5_cache_id));
+#else
 			"raid%d-%p", conf->level, conf->mddev);
+#endif
 	sprintf(conf->cache_name[1], "%s-alt", conf->cache_name[0]);
 
 	conf->active_name = 0;
@@ -2018,21 +2026,21 @@ static void raid5_end_read_request(struct bio * bi, int error)
 				mdname(conf->mddev), STRIPE_SECTORS,
 				(unsigned long long)s,
 				bdevname(rdev->bdev, b));
-			atomic_add(STRIPE_SECTORS, &rdev->corrected_errors);
+			atomic_add_unchecked(STRIPE_SECTORS, &rdev->corrected_errors);
 			clear_bit(R5_ReadError, &sh->dev[i].flags);
 			clear_bit(R5_ReWrite, &sh->dev[i].flags);
 		} else if (test_bit(R5_ReadNoMerge, &sh->dev[i].flags))
 			clear_bit(R5_ReadNoMerge, &sh->dev[i].flags);
 
-		if (atomic_read(&rdev->read_errors))
-			atomic_set(&rdev->read_errors, 0);
+		if (atomic_read_unchecked(&rdev->read_errors))
+			atomic_set_unchecked(&rdev->read_errors, 0);
 	} else {
 		const char *bdn = bdevname(rdev->bdev, b);
 		int retry = 0;
 		int set_bad = 0;
 
 		clear_bit(R5_UPTODATE, &sh->dev[i].flags);
-		atomic_inc(&rdev->read_errors);
+		atomic_inc_unchecked(&rdev->read_errors);
 		if (test_bit(R5_ReadRepl, &sh->dev[i].flags))
 			printk_ratelimited(
 				KERN_WARNING
@@ -2060,7 +2068,7 @@ static void raid5_end_read_request(struct bio * bi, int error)
 				mdname(conf->mddev),
 				(unsigned long long)s,
 				bdn);
-		} else if (atomic_read(&rdev->read_errors)
+		} else if (atomic_read_unchecked(&rdev->read_errors)
 			 > conf->max_nr_stripes)
 			printk(KERN_WARNING
 			       "md/raid:%s: Too many read errors, failing device %s.\n",
diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index 983db75..ef9248c 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -185,7 +185,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
 			const struct dvb_device *template, void *priv, int type)
 {
 	struct dvb_device *dvbdev;
-	struct file_operations *dvbdevfops;
+	file_operations_no_const *dvbdevfops;
 	struct device *clsdev;
 	int minor;
 	int id;
diff --git a/drivers/media/dvb-frontends/af9033.h b/drivers/media/dvb-frontends/af9033.h
index 539f4db..cdd403b 100644
--- a/drivers/media/dvb-frontends/af9033.h
+++ b/drivers/media/dvb-frontends/af9033.h
@@ -82,7 +82,7 @@ struct af9033_ops {
 	int (*pid_filter_ctrl)(struct dvb_frontend *fe, int onoff);
 	int (*pid_filter)(struct dvb_frontend *fe, int index, u16 pid,
 			  int onoff);
-};
+} __no_const;
 
 
 #if IS_ENABLED(CONFIG_DVB_AF9033)
diff --git a/drivers/media/dvb-frontends/dib3000.h b/drivers/media/dvb-frontends/dib3000.h
index 9b6c3bb..baeb5c7 100644
--- a/drivers/media/dvb-frontends/dib3000.h
+++ b/drivers/media/dvb-frontends/dib3000.h
@@ -39,7 +39,7 @@ struct dib_fe_xfer_ops
 	int (*fifo_ctrl)(struct dvb_frontend *fe, int onoff);
 	int (*pid_ctrl)(struct dvb_frontend *fe, int index, int pid, int onoff);
 	int (*tuner_pass_ctrl)(struct dvb_frontend *fe, int onoff, u8 pll_ctrl);
-};
+} __no_const;
 
 #if IS_ENABLED(CONFIG_DVB_DIB3000MB)
 extern struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
diff --git a/drivers/media/pci/cx88/cx88-video.c b/drivers/media/pci/cx88/cx88-video.c
index ed8cb90..5ef7f79 100644
--- a/drivers/media/pci/cx88/cx88-video.c
+++ b/drivers/media/pci/cx88/cx88-video.c
@@ -50,9 +50,9 @@ MODULE_VERSION(CX88_VERSION);
 
 /* ------------------------------------------------------------------ */
 
-static unsigned int video_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
-static unsigned int vbi_nr[]   = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
-static unsigned int radio_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
+static int video_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
+static int vbi_nr[]   = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
+static int radio_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
 
 module_param_array(video_nr, int, NULL, 0444);
 module_param_array(vbi_nr,   int, NULL, 0444);
diff --git a/drivers/media/pci/ivtv/ivtv-driver.c b/drivers/media/pci/ivtv/ivtv-driver.c
index 802642d..5534900 100644
--- a/drivers/media/pci/ivtv/ivtv-driver.c
+++ b/drivers/media/pci/ivtv/ivtv-driver.c
@@ -83,7 +83,7 @@ static struct pci_device_id ivtv_pci_tbl[] = {
 MODULE_DEVICE_TABLE(pci,ivtv_pci_tbl);
 
 /* ivtv instance counter */
-static atomic_t ivtv_instance = ATOMIC_INIT(0);
+static atomic_unchecked_t ivtv_instance = ATOMIC_INIT(0);
 
 /* Parameter declarations */
 static int cardtype[IVTV_MAX_CARDS];
diff --git a/drivers/media/platform/omap/omap_vout.c b/drivers/media/platform/omap/omap_vout.c
index 9a726ea..f5e9b52 100644
--- a/drivers/media/platform/omap/omap_vout.c
+++ b/drivers/media/platform/omap/omap_vout.c
@@ -63,7 +63,6 @@ enum omap_vout_channels {
 	OMAP_VIDEO2,
 };
 
-static struct videobuf_queue_ops video_vbq_ops;
 /* Variables configurable through module params*/
 static u32 video1_numbuffers = 3;
 static u32 video2_numbuffers = 3;
@@ -1015,6 +1014,12 @@ static int omap_vout_open(struct file *file)
 {
 	struct videobuf_queue *q;
 	struct omap_vout_device *vout = NULL;
+	static struct videobuf_queue_ops video_vbq_ops = {
+		.buf_setup = omap_vout_buffer_setup,
+		.buf_prepare = omap_vout_buffer_prepare,
+		.buf_release = omap_vout_buffer_release,
+		.buf_queue = omap_vout_buffer_queue,
+	};
 
 	vout = video_drvdata(file);
 	v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
@@ -1032,10 +1037,6 @@ static int omap_vout_open(struct file *file)
 	vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
 
 	q = &vout->vbq;
-	video_vbq_ops.buf_setup = omap_vout_buffer_setup;
-	video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
-	video_vbq_ops.buf_release = omap_vout_buffer_release;
-	video_vbq_ops.buf_queue = omap_vout_buffer_queue;
 	spin_lock_init(&vout->vbq_lock);
 
 	videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
diff --git a/drivers/media/platform/s5p-tv/mixer.h b/drivers/media/platform/s5p-tv/mixer.h
index fb2acc5..a2fcbdc4 100644
--- a/drivers/media/platform/s5p-tv/mixer.h
+++ b/drivers/media/platform/s5p-tv/mixer.h
@@ -156,7 +156,7 @@ struct mxr_layer {
 	/** layer index (unique identifier) */
 	int idx;
 	/** callbacks for layer methods */
-	struct mxr_layer_ops ops;
+	struct mxr_layer_ops *ops;
 	/** format array */
 	const struct mxr_format **fmt_array;
 	/** size of format array */
diff --git a/drivers/media/platform/s5p-tv/mixer_grp_layer.c b/drivers/media/platform/s5p-tv/mixer_grp_layer.c
index 74344c7..a39e70e 100644
--- a/drivers/media/platform/s5p-tv/mixer_grp_layer.c
+++ b/drivers/media/platform/s5p-tv/mixer_grp_layer.c
@@ -235,7 +235,7 @@ struct mxr_layer *mxr_graph_layer_create(struct mxr_device *mdev, int idx)
 {
 	struct mxr_layer *layer;
 	int ret;
-	struct mxr_layer_ops ops = {
+	static struct mxr_layer_ops ops = {
 		.release = mxr_graph_layer_release,
 		.buffer_set = mxr_graph_buffer_set,
 		.stream_set = mxr_graph_stream_set,
diff --git a/drivers/media/platform/s5p-tv/mixer_reg.c b/drivers/media/platform/s5p-tv/mixer_reg.c
index b713403..53cb5ad 100644
--- a/drivers/media/platform/s5p-tv/mixer_reg.c
+++ b/drivers/media/platform/s5p-tv/mixer_reg.c
@@ -276,7 +276,7 @@ static void mxr_irq_layer_handle(struct mxr_layer *layer)
 		layer->update_buf = next;
 	}
 
-	layer->ops.buffer_set(layer, layer->update_buf);
+	layer->ops->buffer_set(layer, layer->update_buf);
 
 	if (done && done != layer->shadow_buf)
 		vb2_buffer_done(&done->vb, VB2_BUF_STATE_DONE);
diff --git a/drivers/media/platform/s5p-tv/mixer_video.c b/drivers/media/platform/s5p-tv/mixer_video.c
index 8a8dbc8..b74c62d 100644
--- a/drivers/media/platform/s5p-tv/mixer_video.c
+++ b/drivers/media/platform/s5p-tv/mixer_video.c
@@ -210,7 +210,7 @@ static void mxr_layer_default_geo(struct mxr_layer *layer)
 	layer->geo.src.height = layer->geo.src.full_height;
 
 	mxr_geometry_dump(mdev, &layer->geo);
-	layer->ops.fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
+	layer->ops->fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
 	mxr_geometry_dump(mdev, &layer->geo);
 }
 
@@ -228,7 +228,7 @@ static void mxr_layer_update_output(struct mxr_layer *layer)
 	layer->geo.dst.full_width = mbus_fmt.width;
 	layer->geo.dst.full_height = mbus_fmt.height;
 	layer->geo.dst.field = mbus_fmt.field;
-	layer->ops.fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
+	layer->ops->fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
 
 	mxr_geometry_dump(mdev, &layer->geo);
 }
@@ -334,7 +334,7 @@ static int mxr_s_fmt(struct file *file, void *priv,
 	/* set source size to highest accepted value */
 	geo->src.full_width = max(geo->dst.full_width, pix->width);
 	geo->src.full_height = max(geo->dst.full_height, pix->height);
-	layer->ops.fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
+	layer->ops->fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
 	mxr_geometry_dump(mdev, &layer->geo);
 	/* set cropping to total visible screen */
 	geo->src.width = pix->width;
@@ -342,12 +342,12 @@ static int mxr_s_fmt(struct file *file, void *priv,
 	geo->src.x_offset = 0;
 	geo->src.y_offset = 0;
 	/* assure consistency of geometry */
-	layer->ops.fix_geometry(layer, MXR_GEOMETRY_CROP, MXR_NO_OFFSET);
+	layer->ops->fix_geometry(layer, MXR_GEOMETRY_CROP, MXR_NO_OFFSET);
 	mxr_geometry_dump(mdev, &layer->geo);
 	/* set full size to lowest possible value */
 	geo->src.full_width = 0;
 	geo->src.full_height = 0;
-	layer->ops.fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
+	layer->ops->fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
 	mxr_geometry_dump(mdev, &layer->geo);
 
 	/* returning results */
@@ -474,7 +474,7 @@ static int mxr_s_selection(struct file *file, void *fh,
 		target->width = s->r.width;
 		target->height = s->r.height;
 
-		layer->ops.fix_geometry(layer, stage, s->flags);
+		layer->ops->fix_geometry(layer, stage, s->flags);
 
 		/* retrieve update selection rectangle */
 		res.left = target->x_offset;
@@ -954,13 +954,13 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
 	mxr_output_get(mdev);
 
 	mxr_layer_update_output(layer);
-	layer->ops.format_set(layer);
+	layer->ops->format_set(layer);
 	/* enabling layer in hardware */
 	spin_lock_irqsave(&layer->enq_slock, flags);
 	layer->state = MXR_LAYER_STREAMING;
 	spin_unlock_irqrestore(&layer->enq_slock, flags);
 
-	layer->ops.stream_set(layer, MXR_ENABLE);
+	layer->ops->stream_set(layer, MXR_ENABLE);
 	mxr_streamer_get(mdev);
 
 	return 0;
@@ -1030,7 +1030,7 @@ static void stop_streaming(struct vb2_queue *vq)
 	spin_unlock_irqrestore(&layer->enq_slock, flags);
 
 	/* disabling layer in hardware */
-	layer->ops.stream_set(layer, MXR_DISABLE);
+	layer->ops->stream_set(layer, MXR_DISABLE);
 	/* remove one streamer */
 	mxr_streamer_put(mdev);
 	/* allow changes in output configuration */
@@ -1068,8 +1068,8 @@ void mxr_base_layer_unregister(struct mxr_layer *layer)
 
 void mxr_layer_release(struct mxr_layer *layer)
 {
-	if (layer->ops.release)
-		layer->ops.release(layer);
+	if (layer->ops->release)
+		layer->ops->release(layer);
 }
 
 void mxr_base_layer_release(struct mxr_layer *layer)
@@ -1095,7 +1095,7 @@ struct mxr_layer *mxr_base_layer_create(struct mxr_device *mdev,
 
 	layer->mdev = mdev;
 	layer->idx = idx;
-	layer->ops = *ops;
+	layer->ops = ops;
 
 	spin_lock_init(&layer->enq_slock);
 	INIT_LIST_HEAD(&layer->enq_list);
diff --git a/drivers/media/platform/s5p-tv/mixer_vp_layer.c b/drivers/media/platform/s5p-tv/mixer_vp_layer.c
index c9388c4..ce71ece 100644
--- a/drivers/media/platform/s5p-tv/mixer_vp_layer.c
+++ b/drivers/media/platform/s5p-tv/mixer_vp_layer.c
@@ -206,7 +206,7 @@ struct mxr_layer *mxr_vp_layer_create(struct mxr_device *mdev, int idx)
 {
 	struct mxr_layer *layer;
 	int ret;
-	struct mxr_layer_ops ops = {
+	static struct mxr_layer_ops ops = {
 		.release = mxr_vp_layer_release,
 		.buffer_set = mxr_vp_buffer_set,
 		.stream_set = mxr_vp_stream_set,
diff --git a/drivers/media/platform/vivi.c b/drivers/media/platform/vivi.c
index d00bf3d..1301a0c 100644
--- a/drivers/media/platform/vivi.c
+++ b/drivers/media/platform/vivi.c
@@ -58,8 +58,8 @@ MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
 MODULE_LICENSE("Dual BSD/GPL");
 MODULE_VERSION(VIVI_VERSION);
 
-static unsigned video_nr = -1;
-module_param(video_nr, uint, 0644);
+static int video_nr = -1;
+module_param(video_nr, int, 0644);
 MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
 
 static unsigned n_devs = 1;
diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c
index d719e59..63f3470 100644
--- a/drivers/media/radio/radio-cadet.c
+++ b/drivers/media/radio/radio-cadet.c
@@ -333,6 +333,8 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo
 	unsigned char readbuf[RDS_BUFFER];
 	int i = 0;
 
+	if (count > RDS_BUFFER)
+		return -EFAULT;
 	mutex_lock(&dev->lock);
 	if (dev->rdsstat == 0)
 		cadet_start_rds(dev);
@@ -349,8 +351,9 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo
 		readbuf[i++] = dev->rdsbuf[dev->rdsout++];
 	mutex_unlock(&dev->lock);
 
-	if (i && copy_to_user(data, readbuf, i))
-		return -EFAULT;
+	if (i > sizeof(readbuf) || (i && copy_to_user(data, readbuf, i)))
+		i = -EFAULT;
+
 	return i;
 }
 
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index 5236035..c622c74 100644
--- a/drivers/media/radio/radio-maxiradio.c
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -61,7 +61,7 @@ MODULE_PARM_DESC(radio_nr, "Radio device number");
 /* TEA5757 pin mappings */
 static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;
 
-static atomic_t maxiradio_instance = ATOMIC_INIT(0);
+static atomic_unchecked_t maxiradio_instance = ATOMIC_INIT(0);
 
 #define PCI_VENDOR_ID_GUILLEMOT 0x5046
 #define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
diff --git a/drivers/media/radio/radio-shark.c b/drivers/media/radio/radio-shark.c
index 050b3bb..79f62b9 100644
--- a/drivers/media/radio/radio-shark.c
+++ b/drivers/media/radio/radio-shark.c
@@ -79,7 +79,7 @@ struct shark_device {
 	u32 last_val;
 };
 
-static atomic_t shark_instance = ATOMIC_INIT(0);
+static atomic_unchecked_t shark_instance = ATOMIC_INIT(0);
 
 static void shark_write_val(struct snd_tea575x *tea, u32 val)
 {
diff --git a/drivers/media/radio/radio-shark2.c b/drivers/media/radio/radio-shark2.c
index 8654e0d..0608a64 100644
--- a/drivers/media/radio/radio-shark2.c
+++ b/drivers/media/radio/radio-shark2.c
@@ -74,7 +74,7 @@ struct shark_device {
 	u8 *transfer_buffer;
 };
 
-static atomic_t shark_instance = ATOMIC_INIT(0);
+static atomic_unchecked_t shark_instance = ATOMIC_INIT(0);
 
 static int shark_write_reg(struct radio_tea5777 *tea, u64 reg)
 {
diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c
index 2fd9009..278cc1e 100644
--- a/drivers/media/radio/radio-si476x.c
+++ b/drivers/media/radio/radio-si476x.c
@@ -1445,7 +1445,7 @@ static int si476x_radio_probe(struct platform_device *pdev)
 	struct si476x_radio *radio;
 	struct v4l2_ctrl *ctrl;
 
-	static atomic_t instance = ATOMIC_INIT(0);
+	static atomic_unchecked_t instance = ATOMIC_INIT(0);
 
 	radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
 	if (!radio)
diff --git a/drivers/media/usb/dvb-usb/cinergyT2-core.c b/drivers/media/usb/dvb-usb/cinergyT2-core.c
index 9fd1527..8927230 100644
--- a/drivers/media/usb/dvb-usb/cinergyT2-core.c
+++ b/drivers/media/usb/dvb-usb/cinergyT2-core.c
@@ -50,29 +50,73 @@ static struct dvb_usb_device_properties cinergyt2_properties;
 
 static int cinergyt2_streaming_ctrl(struct dvb_usb_adapter *adap, int enable)
 {
-	char buf[] = { CINERGYT2_EP1_CONTROL_STREAM_TRANSFER, enable ? 1 : 0 };
-	char result[64];
-	return dvb_usb_generic_rw(adap->dev, buf, sizeof(buf), result,
-				sizeof(result), 0);
+	char *buf;
+	char *result;
+	int retval;
+
+	buf = kmalloc(2, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+	result = kmalloc(64, GFP_KERNEL);
+	if (result == NULL) {
+		kfree(buf);
+		return -ENOMEM;
+	}
+
+	buf[0] = CINERGYT2_EP1_CONTROL_STREAM_TRANSFER;
+	buf[1] = enable ? 1 : 0;
+
+	retval = dvb_usb_generic_rw(adap->dev, buf, 2, result, 64, 0);
+
+	kfree(buf);
+	kfree(result);
+	return retval;
 }
 
 static int cinergyt2_power_ctrl(struct dvb_usb_device *d, int enable)
 {
-	char buf[] = { CINERGYT2_EP1_SLEEP_MODE, enable ? 0 : 1 };
-	char state[3];
-	return dvb_usb_generic_rw(d, buf, sizeof(buf), state, sizeof(state), 0);
+	char *buf;
+	char *state;
+	int retval;
+
+	buf = kmalloc(2, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+	state = kmalloc(3, GFP_KERNEL);
+	if (state == NULL) {
+		kfree(buf);
+		return -ENOMEM;
+	}
+
+	buf[0] = CINERGYT2_EP1_SLEEP_MODE;
+	buf[1] = enable ? 1 : 0;
+
+	retval = dvb_usb_generic_rw(d, buf, 2, state, 3, 0);
+
+	kfree(buf);
+	kfree(state);
+	return retval;
 }
 
 static int cinergyt2_frontend_attach(struct dvb_usb_adapter *adap)
 {
-	char query[] = { CINERGYT2_EP1_GET_FIRMWARE_VERSION };
-	char state[3];
+	char *query;
+	char *state;
 	int ret;
+	query = kmalloc(1, GFP_KERNEL);
+	if (query == NULL)
+		return -ENOMEM;
+	state = kmalloc(3, GFP_KERNEL);
+	if (state == NULL) {
+		kfree(query);
+		return -ENOMEM;
+	}
+
+	query[0] = CINERGYT2_EP1_GET_FIRMWARE_VERSION;
 
 	adap->fe_adap[0].fe = cinergyt2_fe_attach(adap->dev);
 
-	ret = dvb_usb_generic_rw(adap->dev, query, sizeof(query), state,
-				sizeof(state), 0);
+	ret = dvb_usb_generic_rw(adap->dev, query, 1, state, 3, 0);
 	if (ret < 0) {
 		deb_rc("cinergyt2_power_ctrl() Failed to retrieve sleep "
 			"state info\n");
@@ -80,7 +124,8 @@ static int cinergyt2_frontend_attach(struct dvb_usb_adapter *adap)
 
 	/* Copy this pointer as we are gonna need it in the release phase */
 	cinergyt2_usb_device = adap->dev;
-
+	kfree(query);
+	kfree(state);
 	return 0;
 }
 
@@ -141,12 +186,23 @@ static int repeatable_keys[] = {
 static int cinergyt2_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 {
 	struct cinergyt2_state *st = d->priv;
-	u8 key[5] = {0, 0, 0, 0, 0}, cmd = CINERGYT2_EP1_GET_RC_EVENTS;
+	u8 *key, *cmd;
 	int i;
 
+	cmd = kmalloc(1, GFP_KERNEL);
+	if (cmd == NULL)
+		return -EINVAL;
+	key = kzalloc(5, GFP_KERNEL);
+	if (key == NULL) {
+		kfree(cmd);
+		return -EINVAL;
+	}
+
+	cmd[0] = CINERGYT2_EP1_GET_RC_EVENTS;
+
 	*state = REMOTE_NO_KEY_PRESSED;
 
-	dvb_usb_generic_rw(d, &cmd, 1, key, sizeof(key), 0);
+	dvb_usb_generic_rw(d, cmd, 1, key, 5, 0);
 	if (key[4] == 0xff) {
 		/* key repeat */
 		st->rc_counter++;
@@ -157,12 +213,12 @@ static int cinergyt2_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 					*event = d->last_event;
 					deb_rc("repeat key, event %x\n",
 						   *event);
-					return 0;
+					goto out;
 				}
 			}
 			deb_rc("repeated key (non repeatable)\n");
 		}
-		return 0;
+		goto out;
 	}
 
 	/* hack to pass checksum on the custom field */
@@ -174,6 +230,9 @@ static int cinergyt2_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
 
 		deb_rc("key: %*ph\n", 5, key);
 	}
+out:
+	kfree(cmd);
+	kfree(key);
 	return 0;
 }
 
diff --git a/drivers/media/usb/dvb-usb/cinergyT2-fe.c b/drivers/media/usb/dvb-usb/cinergyT2-fe.c
index c890fe4..f9b2ae6 100644
--- a/drivers/media/usb/dvb-usb/cinergyT2-fe.c
+++ b/drivers/media/usb/dvb-usb/cinergyT2-fe.c
@@ -145,103 +145,176 @@ static int cinergyt2_fe_read_status(struct dvb_frontend *fe,
 					fe_status_t *status)
 {
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	struct dvbt_get_status_msg result;
-	u8 cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
+	struct dvbt_get_status_msg *result;
+	u8 *cmd;
 	int ret;
 
-	ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (u8 *)&result,
-			sizeof(result), 0);
+	cmd = kmalloc(1, GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+	result = kmalloc(sizeof(*result), GFP_KERNEL);
+	if (result == NULL) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	cmd[0] = CINERGYT2_EP1_GET_TUNER_STATUS;
+
+	ret = dvb_usb_generic_rw(state->d, cmd, 1, (u8 *)result,
+			sizeof(*result), 0);
 	if (ret < 0)
-		return ret;
+		goto out;
 
 	*status = 0;
 
-	if (0xffff - le16_to_cpu(result.gain) > 30)
+	if (0xffff - le16_to_cpu(result->gain) > 30)
 		*status |= FE_HAS_SIGNAL;
-	if (result.lock_bits & (1 << 6))
+	if (result->lock_bits & (1 << 6))
 		*status |= FE_HAS_LOCK;
-	if (result.lock_bits & (1 << 5))
+	if (result->lock_bits & (1 << 5))
 		*status |= FE_HAS_SYNC;
-	if (result.lock_bits & (1 << 4))
+	if (result->lock_bits & (1 << 4))
 		*status |= FE_HAS_CARRIER;
-	if (result.lock_bits & (1 << 1))
+	if (result->lock_bits & (1 << 1))
 		*status |= FE_HAS_VITERBI;
 
 	if ((*status & (FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC)) !=
 			(FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_SYNC))
 		*status &= ~FE_HAS_LOCK;
 
-	return 0;
+out:
+	kfree(cmd);
+	kfree(result);
+	return ret;
 }
 
 static int cinergyt2_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
 {
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	struct dvbt_get_status_msg status;
-	char cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
+	struct dvbt_get_status_msg *status;
+	char *cmd;
 	int ret;
 
-	ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (char *)&status,
-				sizeof(status), 0);
+	cmd = kmalloc(1, GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+	status = kmalloc(sizeof(*status), GFP_KERNEL);
+	if (status == NULL) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	cmd[0] = CINERGYT2_EP1_GET_TUNER_STATUS;
+
+	ret = dvb_usb_generic_rw(state->d, cmd, 1, (char *)status,
+				sizeof(*status), 0);
 	if (ret < 0)
-		return ret;
+		goto out;
 
-	*ber = le32_to_cpu(status.viterbi_error_rate);
+	*ber = le32_to_cpu(status->viterbi_error_rate);
+out:
+	kfree(cmd);
+	kfree(status);
 	return 0;
 }
 
 static int cinergyt2_fe_read_unc_blocks(struct dvb_frontend *fe, u32 *unc)
 {
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	struct dvbt_get_status_msg status;
-	u8 cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
+	struct dvbt_get_status_msg *status;
+	u8 *cmd;
 	int ret;
 
-	ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (u8 *)&status,
-				sizeof(status), 0);
+	cmd = kmalloc(1, GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+	status = kmalloc(sizeof(*status), GFP_KERNEL);
+	if (status == NULL) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	cmd[0] = CINERGYT2_EP1_GET_TUNER_STATUS;
+
+	ret = dvb_usb_generic_rw(state->d, cmd, 1, (u8 *)status,
+				sizeof(*status), 0);
 	if (ret < 0) {
 		err("cinergyt2_fe_read_unc_blocks() Failed! (Error=%d)\n",
 			ret);
-		return ret;
+		goto out;
 	}
-	*unc = le32_to_cpu(status.uncorrected_block_count);
-	return 0;
+	*unc = le32_to_cpu(status->uncorrected_block_count);
+
+out:
+	kfree(cmd);
+	kfree(status);
+	return ret;
 }
 
 static int cinergyt2_fe_read_signal_strength(struct dvb_frontend *fe,
 						u16 *strength)
 {
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	struct dvbt_get_status_msg status;
-	char cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
+	struct dvbt_get_status_msg *status;
+	char *cmd;
 	int ret;
 
-	ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (char *)&status,
-				sizeof(status), 0);
+	cmd = kmalloc(1, GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+	status = kmalloc(sizeof(*status), GFP_KERNEL);
+	if (status == NULL) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	cmd[0] = CINERGYT2_EP1_GET_TUNER_STATUS;
+
+	ret = dvb_usb_generic_rw(state->d, cmd, 1, (char *)status,
+				sizeof(*status), 0);
 	if (ret < 0) {
 		err("cinergyt2_fe_read_signal_strength() Failed!"
 			" (Error=%d)\n", ret);
-		return ret;
+		goto out;
 	}
-	*strength = (0xffff - le16_to_cpu(status.gain));
+	*strength = (0xffff - le16_to_cpu(status->gain));
+
+out:
+	kfree(cmd);
+	kfree(status);
 	return 0;
 }
 
 static int cinergyt2_fe_read_snr(struct dvb_frontend *fe, u16 *snr)
 {
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	struct dvbt_get_status_msg status;
-	char cmd[] = { CINERGYT2_EP1_GET_TUNER_STATUS };
+	struct dvbt_get_status_msg *status;
+	char *cmd;
 	int ret;
 
-	ret = dvb_usb_generic_rw(state->d, cmd, sizeof(cmd), (char *)&status,
-				sizeof(status), 0);
+	cmd = kmalloc(1, GFP_KERNEL);
+	if (cmd == NULL)
+		return -ENOMEM;
+	status = kmalloc(sizeof(*status), GFP_KERNEL);
+	if (status == NULL) {
+		kfree(cmd);
+		return -ENOMEM;
+	}
+
+	cmd[0] = CINERGYT2_EP1_GET_TUNER_STATUS;
+
+	ret = dvb_usb_generic_rw(state->d, cmd, 1, (char *)status,
+				sizeof(*status), 0);
 	if (ret < 0) {
 		err("cinergyt2_fe_read_snr() Failed! (Error=%d)\n", ret);
-		return ret;
+		goto out;
 	}
-	*snr = (status.snr << 8) | status.snr;
-	return 0;
+	*snr = (status->snr << 8) | status->snr;
+
+out:
+	kfree(cmd);
+	kfree(status);
+	return ret;
 }
 
 static int cinergyt2_fe_init(struct dvb_frontend *fe)
@@ -266,35 +339,46 @@ static int cinergyt2_fe_set_frontend(struct dvb_frontend *fe)
 {
 	struct dtv_frontend_properties *fep = &fe->dtv_property_cache;
 	struct cinergyt2_fe_state *state = fe->demodulator_priv;
-	struct dvbt_set_parameters_msg param;
-	char result[2];
+	struct dvbt_set_parameters_msg *param;
+	char *result;
 	int err;
 
-	param.cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
-	param.tps = cpu_to_le16(compute_tps(fep));
-	param.freq = cpu_to_le32(fep->frequency / 1000);
-	param.flags = 0;
+	result = kmalloc(2, GFP_KERNEL);
+	if (result == NULL)
+		return -ENOMEM;
+	param = kmalloc(sizeof(*param), GFP_KERNEL);
+	if (param == NULL) {
+		kfree(result);
+		return -ENOMEM;
+	}
+
+	param->cmd = CINERGYT2_EP1_SET_TUNER_PARAMETERS;
+	param->tps = cpu_to_le16(compute_tps(fep));
+	param->freq = cpu_to_le32(fep->frequency / 1000);
+	param->flags = 0;
 
 	switch (fep->bandwidth_hz) {
 	default:
 	case 8000000:
-		param.bandwidth = 8;
+		param->bandwidth = 8;
 		break;
 	case 7000000:
-		param.bandwidth = 7;
+		param->bandwidth = 7;
 		break;
 	case 6000000:
-		param.bandwidth = 6;
+		param->bandwidth = 6;
 		break;
 	}
 
 	err = dvb_usb_generic_rw(state->d,
-			(char *)&param, sizeof(param),
-			result, sizeof(result), 0);
+			(char *)param, sizeof(*param),
+			result, 2, 0);
 	if (err < 0)
 		err("cinergyt2_fe_set_frontend() Failed! err=%d\n", err);
 
-	return (err < 0) ? err : 0;
+	kfree(result);
+	kfree(param);
+	return err;
 }
 
 static void cinergyt2_fe_release(struct dvb_frontend *fe)
diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
index a1c641e..3007da9 100644
--- a/drivers/media/usb/dvb-usb/cxusb.c
+++ b/drivers/media/usb/dvb-usb/cxusb.c
@@ -1112,7 +1112,7 @@ static struct dib0070_config dib7070p_dib0070_config = {
 
 struct dib0700_adapter_state {
 	int (*set_param_save) (struct dvb_frontend *);
-};
+} __no_const;
 
 static int dib7070_set_param_override(struct dvb_frontend *fe)
 {
diff --git a/drivers/media/usb/dvb-usb/dvb-usb-firmware.c b/drivers/media/usb/dvb-usb/dvb-usb-firmware.c
index 733a7ff..f8b52e3 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb-firmware.c
+++ b/drivers/media/usb/dvb-usb/dvb-usb-firmware.c
@@ -35,42 +35,57 @@ static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 le
 
 int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)
 {
-	struct hexline hx;
-	u8 reset;
+	struct hexline *hx;
+	u8 *reset;
 	int ret,pos=0;
 
+	reset = kmalloc(1, GFP_KERNEL);
+	if (reset == NULL)
+		return -ENOMEM;
+
+	hx = kmalloc(sizeof(struct hexline), GFP_KERNEL);
+	if (hx == NULL) {
+		kfree(reset);
+		return -ENOMEM;
+	}
+
 	/* stop the CPU */
-	reset = 1;
-	if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
+	reset[0] = 1;
+	if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,reset,1)) != 1)
 		err("could not stop the USB controller CPU.");
 
-	while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) {
-		deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk);
-		ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len);
+	while ((ret = dvb_usb_get_hexline(fw,hx,&pos)) > 0) {
+		deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx->addr,hx->len,hx->chk);
+		ret = usb_cypress_writemem(udev,hx->addr,hx->data,hx->len);
 
-		if (ret != hx.len) {
+		if (ret != hx->len) {
 			err("error while transferring firmware "
 				"(transferred size: %d, block size: %d)",
-				ret,hx.len);
+				ret,hx->len);
 			ret = -EINVAL;
 			break;
 		}
 	}
 	if (ret < 0) {
 		err("firmware download failed at %d with %d",pos,ret);
+		kfree(reset);
+		kfree(hx);
 		return ret;
 	}
 
 	if (ret == 0) {
 		/* restart the CPU */
-		reset = 0;
-		if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) {
+		reset[0] = 0;
+		if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,reset,1) != 1) {
 			err("could not restart the USB controller CPU.");
 			ret = -EINVAL;
 		}
 	} else
 		ret = -EIO;
 
+	kfree(reset);
+	kfree(hx);
+
 	return ret;
 }
 EXPORT_SYMBOL(usb_cypress_load_firmware);
diff --git a/drivers/media/usb/dvb-usb/dw2102.c b/drivers/media/usb/dvb-usb/dw2102.c
index ae0f56a..ec71784 100644
--- a/drivers/media/usb/dvb-usb/dw2102.c
+++ b/drivers/media/usb/dvb-usb/dw2102.c
@@ -118,7 +118,7 @@ struct su3000_state {
 
 struct s6x0_state {
 	int (*old_set_voltage)(struct dvb_frontend *f, fe_sec_voltage_t v);
-};
+} __no_const;
 
 /* debug */
 static int dvb_usb_dw2102_debug;
diff --git a/drivers/media/usb/dvb-usb/technisat-usb2.c b/drivers/media/usb/dvb-usb/technisat-usb2.c
index d947e03..87fef42 100644
--- a/drivers/media/usb/dvb-usb/technisat-usb2.c
+++ b/drivers/media/usb/dvb-usb/technisat-usb2.c
@@ -87,8 +87,11 @@ struct technisat_usb2_state {
 static int technisat_usb2_i2c_access(struct usb_device *udev,
 		u8 device_addr, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
 {
-	u8 b[64];
-	int ret, actual_length;
+	u8 *b = kmalloc(64, GFP_KERNEL);
+	int ret, actual_length, error = 0;
+
+	if (b == NULL)
+		return -ENOMEM;
 
 	deb_i2c("i2c-access: %02x, tx: ", device_addr);
 	debug_dump(tx, txlen, deb_i2c);
@@ -121,7 +124,8 @@ static int technisat_usb2_i2c_access(struct usb_device *udev,
 
 	if (ret < 0) {
 		err("i2c-error: out failed %02x = %d", device_addr, ret);
-		return -ENODEV;
+		error = -ENODEV;
+		goto out;
 	}
 
 	ret = usb_bulk_msg(udev,
@@ -129,7 +133,8 @@ static int technisat_usb2_i2c_access(struct usb_device *udev,
 			b, 64, &actual_length, 1000);
 	if (ret < 0) {
 		err("i2c-error: in failed %02x = %d", device_addr, ret);
-		return -ENODEV;
+		error = -ENODEV;
+		goto out;
 	}
 
 	if (b[0] != I2C_STATUS_OK) {
@@ -137,8 +142,10 @@ static int technisat_usb2_i2c_access(struct usb_device *udev,
 		/* handle tuner-i2c-nak */
 		if (!(b[0] == I2C_STATUS_NAK &&
 				device_addr == 0x60
-				/* && device_is_technisat_usb2 */))
-			return -ENODEV;
+				/* && device_is_technisat_usb2 */)) {
+			error = -ENODEV;
+			goto out;
+		}
 	}
 
 	deb_i2c("status: %d, ", b[0]);
@@ -152,7 +159,9 @@ static int technisat_usb2_i2c_access(struct usb_device *udev,
 
 	deb_i2c("\n");
 
-	return 0;
+out:
+	kfree(b);
+	return error;
 }
 
 static int technisat_usb2_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msg,
@@ -224,14 +233,16 @@ static int technisat_usb2_set_led(struct dvb_usb_device *d, int red, enum techni
 {
 	int ret;
 
-	u8 led[8] = {
-		red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
-		0
-	};
+	u8 *led = kzalloc(8, GFP_KERNEL);
+
+	if (led == NULL)
+		return -ENOMEM;
 
 	if (disable_led_control && state != TECH_LED_OFF)
 		return 0;
 
+	led[0] = red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST;
+
 	switch (state) {
 	case TECH_LED_ON:
 		led[1] = 0x82;
@@ -263,16 +274,22 @@ static int technisat_usb2_set_led(struct dvb_usb_device *d, int red, enum techni
 		red ? SET_RED_LED_VENDOR_REQUEST : SET_GREEN_LED_VENDOR_REQUEST,
 		USB_TYPE_VENDOR | USB_DIR_OUT,
 		0, 0,
-		led, sizeof(led), 500);
+		led, 8, 500);
 
 	mutex_unlock(&d->i2c_mutex);
+
+	kfree(led);
+
 	return ret;
 }
 
 static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 green)
 {
 	int ret;
-	u8 b = 0;
+	u8 *b = kzalloc(1, GFP_KERNEL);
+
+	if (b == NULL)
+		return -ENOMEM;
 
 	if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 		return -EAGAIN;
@@ -281,10 +298,12 @@ static int technisat_usb2_set_led_timer(struct dvb_usb_device *d, u8 red, u8 gre
 		SET_LED_TIMER_DIVIDER_VENDOR_REQUEST,
 		USB_TYPE_VENDOR | USB_DIR_OUT,
 		(red << 8) | green, 0,
-		&b, 1, 500);
+		b, 1, 500);
 
 	mutex_unlock(&d->i2c_mutex);
 
+	kfree(b);
+
 	return ret;
 }
 
@@ -328,7 +347,7 @@ static int technisat_usb2_identify_state(struct usb_device *udev,
 		struct dvb_usb_device_description **desc, int *cold)
 {
 	int ret;
-	u8 version[3];
+	u8 *version = kmalloc(3, GFP_KERNEL);
 
 	/* first select the interface */
 	if (usb_set_interface(udev, 0, 1) != 0)
@@ -338,11 +357,14 @@ static int technisat_usb2_identify_state(struct usb_device *udev,
 
 	*cold = 0; /* by default do not download a firmware - just in case something is wrong */
 
+	if (version == NULL)
+		return 0;
+
 	ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
 		GET_VERSION_INFO_VENDOR_REQUEST,
 		USB_TYPE_VENDOR | USB_DIR_IN,
 		0, 0,
-		version, sizeof(version), 500);
+		version, 3, 500);
 
 	if (ret < 0)
 		*cold = 1;
@@ -351,6 +373,8 @@ static int technisat_usb2_identify_state(struct usb_device *udev,
 		*cold = 0;
 	}
 
+	kfree(version);
+
 	return 0;
 }
 
@@ -591,10 +615,15 @@ static int technisat_usb2_frontend_attach(struct dvb_usb_adapter *a)
 
 static int technisat_usb2_get_ir(struct dvb_usb_device *d)
 {
-	u8 buf[62], *b;
+	u8 *buf, *b;
 	int ret;
 	struct ir_raw_event ev;
 
+	buf = kmalloc(62, GFP_KERNEL);
+
+	if (buf == NULL)
+		return -ENOMEM;
+
 	buf[0] = GET_IR_DATA_VENDOR_REQUEST;
 	buf[1] = 0x08;
 	buf[2] = 0x8f;
@@ -617,16 +646,20 @@ static int technisat_usb2_get_ir(struct dvb_usb_device *d)
 			GET_IR_DATA_VENDOR_REQUEST,
 			USB_TYPE_VENDOR | USB_DIR_IN,
 			0x8080, 0,
-			buf, sizeof(buf), 500);
+			buf, 62, 500);
 
 unlock:
 	mutex_unlock(&d->i2c_mutex);
 
-	if (ret < 0)
+	if (ret < 0) {
+		kfree(buf);
 		return ret;
+	}
 
-	if (ret == 1)
+	if (ret == 1) {
+		kfree(buf);
 		return 0; /* no key pressed */
+	}
 
 	/* decoding */
 	b = buf+1;
@@ -653,6 +686,8 @@ unlock:
 
 	ir_raw_event_handle(d->rc_dev);
 
+	kfree(buf);
+
 	return 1;
 }
 
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index 7e2411c..cef73ca 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -328,7 +328,7 @@ struct v4l2_buffer32 {
 	__u32			reserved;
 };
 
-static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
+static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
 				enum v4l2_memory memory)
 {
 	void __user *up_pln;
@@ -357,7 +357,7 @@ static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
 	return 0;
 }
 
-static int put_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
+static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
 				enum v4l2_memory memory)
 {
 	if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
@@ -427,7 +427,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 		 * by passing a very big num_planes value */
 		uplane = compat_alloc_user_space(num_planes *
 						sizeof(struct v4l2_plane));
-		kp->m.planes = uplane;
+		kp->m.planes = (struct v4l2_plane __force_kernel *)uplane;
 
 		while (--num_planes >= 0) {
 			ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
@@ -498,7 +498,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
 		if (num_planes == 0)
 			return 0;
 
-		uplane = kp->m.planes;
+		uplane = (struct v4l2_plane __force_user *)kp->m.planes;
 		if (get_user(p, &up->m.planes))
 			return -EFAULT;
 		uplane32 = compat_ptr(p);
@@ -552,7 +552,7 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame
 		get_user(kp->capability, &up->capability) ||
 		get_user(kp->flags, &up->flags))
 			return -EFAULT;
-	kp->base = compat_ptr(tmp);
+	kp->base = (void __force_kernel *)compat_ptr(tmp);
 	get_v4l2_pix_format(&kp->fmt, &up->fmt);
 	return 0;
 }
@@ -658,7 +658,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
 			n * sizeof(struct v4l2_ext_control32)))
 		return -EFAULT;
 	kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
-	kp->controls = kcontrols;
+	kp->controls = (struct v4l2_ext_control __force_kernel *)kcontrols;
 	while (--n >= 0) {
 		if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
 			return -EFAULT;
@@ -680,7 +680,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
 static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
 {
 	struct v4l2_ext_control32 __user *ucontrols;
-	struct v4l2_ext_control __user *kcontrols = kp->controls;
+	struct v4l2_ext_control __user *kcontrols = (struct v4l2_ext_control __force_user *)kp->controls;
 	int n = kp->count;
 	compat_caddr_t p;
 
@@ -774,7 +774,7 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up)
 		put_user(kp->start_block, &up->start_block) ||
 		put_user(kp->blocks, &up->blocks) ||
 		put_user(tmp, &up->edid) ||
-		copy_to_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
+		copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved)))
 			return -EFAULT;
 	return 0;
 }
diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
index 55c6832..a91c7a6 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1431,8 +1431,8 @@ static int validate_new(const struct v4l2_ctrl *ctrl,
 		return 0;
 
 	case V4L2_CTRL_TYPE_STRING:
-		len = strlen(c->string);
-		if (len < ctrl->minimum)
+		len = strlen_user(c->string);
+		if (!len || len < ctrl->minimum)
 			return -ERANGE;
 		if ((len - ctrl->minimum) % ctrl->step)
 			return -ERANGE;
diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c
index 015f92a..59e311e 100644
--- a/drivers/media/v4l2-core/v4l2-device.c
+++ b/drivers/media/v4l2-core/v4l2-device.c
@@ -75,9 +75,9 @@ int v4l2_device_put(struct v4l2_device *v4l2_dev)
 EXPORT_SYMBOL_GPL(v4l2_device_put);
 
 int v4l2_device_set_name(struct v4l2_device *v4l2_dev, const char *basename,
-						atomic_t *instance)
+						atomic_unchecked_t *instance)
 {
-	int num = atomic_inc_return(instance) - 1;
+	int num = atomic_inc_return_unchecked(instance) - 1;
 	int len = strlen(basename);
 
 	if (basename[len - 1] >= '0' && basename[len - 1] <= '9')
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 16bffd8..3ab516a 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -2003,7 +2003,8 @@ struct v4l2_ioctl_info {
 				struct file *file, void *fh, void *p);
 	} u;
 	void (*debug)(const void *arg, bool write_only);
-};
+} __do_const;
+typedef struct v4l2_ioctl_info __no_const v4l2_ioctl_info_no_const;
 
 /* This control needs a priority check */
 #define INFO_FL_PRIO	(1 << 0)
@@ -2186,7 +2187,7 @@ static long __video_do_ioctl(struct file *file,
 	struct video_device *vfd = video_devdata(file);
 	const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
 	bool write_only = false;
-	struct v4l2_ioctl_info default_info;
+	v4l2_ioctl_info_no_const default_info;
 	const struct v4l2_ioctl_info *info;
 	void *fh = file->private_data;
 	struct v4l2_fh *vfh = NULL;
@@ -2276,7 +2277,7 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
 				ret = -EINVAL;
 				break;
 			}
-			*user_ptr = (void __user *)buf->m.planes;
+			*user_ptr = (void __force_user *)buf->m.planes;
 			*kernel_ptr = (void **)&buf->m.planes;
 			*array_size = sizeof(struct v4l2_plane) * buf->length;
 			ret = 1;
@@ -2293,7 +2294,7 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
 				ret = -EINVAL;
 				break;
 			}
-			*user_ptr = (void __user *)edid->edid;
+			*user_ptr = (void __force_user *)edid->edid;
 			*kernel_ptr = (void **)&edid->edid;
 			*array_size = edid->blocks * 128;
 			ret = 1;
@@ -2311,7 +2312,7 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
 				ret = -EINVAL;
 				break;
 			}
-			*user_ptr = (void __user *)ctrls->controls;
+			*user_ptr = (void __force_user *)ctrls->controls;
 			*kernel_ptr = (void **)&ctrls->controls;
 			*array_size = sizeof(struct v4l2_ext_control)
 				    * ctrls->count;
@@ -2412,7 +2413,7 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
 	}
 
 	if (has_array_args) {
-		*kernel_ptr = (void __force *)user_ptr;
+		*kernel_ptr = (void __force_kernel *)user_ptr;
 		if (copy_to_user(user_ptr, mbuf, array_size))
 			err = -EFAULT;
 		goto out_array_args;
diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
index ebc0af7..baed058 100644
--- a/drivers/message/fusion/mptbase.c
+++ b/drivers/message/fusion/mptbase.c
@@ -6755,8 +6755,13 @@ static int mpt_iocinfo_proc_show(struct seq_file *m, void *v)
 	seq_printf(m, "  MaxChainDepth = 0x%02x frames\n", ioc->facts.MaxChainDepth);
 	seq_printf(m, "  MinBlockSize = 0x%02x bytes\n", 4*ioc->facts.BlockSize);
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	seq_printf(m, "  RequestFrames @ 0x%p (Dma @ 0x%p)\n", NULL, NULL);
+#else
 	seq_printf(m, "  RequestFrames @ 0x%p (Dma @ 0x%p)\n",
 					(void *)ioc->req_frames, (void *)(ulong)ioc->req_frames_dma);
+#endif
+
 	/*
 	 *  Rounding UP to nearest 4-kB boundary here...
 	 */
@@ -6769,7 +6774,11 @@ static int mpt_iocinfo_proc_show(struct seq_file *m, void *v)
 					ioc->facts.GlobalCredits);
 
 	seq_printf(m, "  Frames   @ 0x%p (Dma @ 0x%p)\n",
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+					NULL, NULL);
+#else
 					(void *)ioc->alloc, (void *)(ulong)ioc->alloc_dma);
+#endif
 	sz = (ioc->reply_sz * ioc->reply_depth) + 128;
 	seq_printf(m, "    {CurRepSz=%d} x {CurRepDepth=%d} = %d bytes ^= 0x%x\n",
 					ioc->reply_sz, ioc->reply_depth, ioc->reply_sz*ioc->reply_depth, sz);
diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
index 711fcb5..5da1fb0 100644
--- a/drivers/message/fusion/mptsas.c
+++ b/drivers/message/fusion/mptsas.c
@@ -446,6 +446,23 @@ mptsas_is_end_device(struct mptsas_devinfo * attached)
 		return 0;
 }
 
+static inline void
+mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy)
+{
+	if (phy_info->port_details) {
+		phy_info->port_details->rphy = rphy;
+		dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n",
+		    ioc->name, rphy));
+	}
+
+	if (rphy) {
+		dsaswideprintk(ioc, dev_printk(KERN_DEBUG,
+		    &rphy->dev, MYIOC_s_FMT "add:", ioc->name));
+		dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n",
+		    ioc->name, rphy, rphy->dev.release));
+	}
+}
+
 /* no mutex */
 static void
 mptsas_port_delete(MPT_ADAPTER *ioc, struct mptsas_portinfo_details * port_details)
@@ -484,23 +501,6 @@ mptsas_get_rphy(struct mptsas_phyinfo *phy_info)
 		return NULL;
 }
 
-static inline void
-mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy)
-{
-	if (phy_info->port_details) {
-		phy_info->port_details->rphy = rphy;
-		dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n",
-		    ioc->name, rphy));
-	}
-
-	if (rphy) {
-		dsaswideprintk(ioc, dev_printk(KERN_DEBUG,
-		    &rphy->dev, MYIOC_s_FMT "add:", ioc->name));
-		dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n",
-		    ioc->name, rphy, rphy->dev.release));
-	}
-}
-
 static inline struct sas_port *
 mptsas_get_port(struct mptsas_phyinfo *phy_info)
 {
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index 2a1c6f2..a04c6a2 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -1271,15 +1271,16 @@ mptscsih_info(struct Scsi_Host *SChost)
 
 	h = shost_priv(SChost);
 
-	if (h) {
-		if (h->info_kbuf == NULL)
-			if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
-				return h->info_kbuf;
-		h->info_kbuf[0] = '\0';
+	if (!h)
+		return NULL;
 
-		mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
-		h->info_kbuf[size-1] = '\0';
-	}
+	if (h->info_kbuf == NULL)
+		if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
+			return h->info_kbuf;
+	h->info_kbuf[0] = '\0';
+
+	mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
+	h->info_kbuf[size-1] = '\0';
 
 	return h->info_kbuf;
 }
diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
index b7d87cd..3fb36da 100644
--- a/drivers/message/i2o/i2o_proc.c
+++ b/drivers/message/i2o/i2o_proc.c
@@ -255,12 +255,6 @@ static char *scsi_devices[] = {
 	"Array Controller Device"
 };
 
-static char *chtostr(char *tmp, u8 *chars, int n)
-{
-	tmp[0] = 0;
-	return strncat(tmp, (char *)chars, n);
-}
-
 static int i2o_report_query_status(struct seq_file *seq, int block_status,
 				   char *group)
 {
@@ -707,9 +701,9 @@ static int i2o_seq_show_status(struct seq_file *seq, void *v)
 static int i2o_seq_show_hw(struct seq_file *seq, void *v)
 {
 	struct i2o_controller *c = (struct i2o_controller *)seq->private;
-	static u32 work32[5];
-	static u8 *work8 = (u8 *) work32;
-	static u16 *work16 = (u16 *) work32;
+	u32 work32[5];
+	u8 *work8 = (u8 *) work32;
+	u16 *work16 = (u16 *) work32;
 	int token;
 	u32 hwcap;
 
@@ -790,7 +784,6 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v)
 	} *result;
 
 	i2o_exec_execute_ddm_table ddm_table;
-	char tmp[28 + 1];
 
 	result = kmalloc(sizeof(*result), GFP_KERNEL);
 	if (!result)
@@ -825,8 +818,7 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v)
 
 		seq_printf(seq, "%-#7x", ddm_table.i2o_vendor_id);
 		seq_printf(seq, "%-#8x", ddm_table.module_id);
-		seq_printf(seq, "%-29s",
-			   chtostr(tmp, ddm_table.module_name_version, 28));
+		seq_printf(seq, "%-.28s", ddm_table.module_name_version);
 		seq_printf(seq, "%9d  ", ddm_table.data_size);
 		seq_printf(seq, "%8d", ddm_table.code_size);
 
@@ -893,7 +885,6 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v)
 
 	i2o_driver_result_table *result;
 	i2o_driver_store_table *dst;
-	char tmp[28 + 1];
 
 	result = kmalloc(sizeof(i2o_driver_result_table), GFP_KERNEL);
 	if (result == NULL)
@@ -928,9 +919,8 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v)
 
 		seq_printf(seq, "%-#7x", dst->i2o_vendor_id);
 		seq_printf(seq, "%-#8x", dst->module_id);
-		seq_printf(seq, "%-29s",
-			   chtostr(tmp, dst->module_name_version, 28));
-		seq_printf(seq, "%-9s", chtostr(tmp, dst->date, 8));
+		seq_printf(seq, "%-.28s", dst->module_name_version);
+		seq_printf(seq, "%-.8s", dst->date);
 		seq_printf(seq, "%8d ", dst->module_size);
 		seq_printf(seq, "%8d ", dst->mpb_size);
 		seq_printf(seq, "0x%04x", dst->module_flags);
@@ -1246,11 +1236,10 @@ static int i2o_seq_show_authorized_users(struct seq_file *seq, void *v)
 static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v)
 {
 	struct i2o_device *d = (struct i2o_device *)seq->private;
-	static u32 work32[128];	// allow for "stuff" + up to 256 byte (max) serial number
+	u32 work32[128];	// allow for "stuff" + up to 256 byte (max) serial number
 	// == (allow) 512d bytes (max)
-	static u16 *work16 = (u16 *) work32;
+	u16 *work16 = (u16 *) work32;
 	int token;
-	char tmp[16 + 1];
 
 	token = i2o_parm_field_get(d, 0xF100, -1, &work32, sizeof(work32));
 
@@ -1262,14 +1251,10 @@ static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v)
 	seq_printf(seq, "Device Class  : %s\n", i2o_get_class_name(work16[0]));
 	seq_printf(seq, "Owner TID     : %0#5x\n", work16[2]);
 	seq_printf(seq, "Parent TID    : %0#5x\n", work16[3]);
-	seq_printf(seq, "Vendor info   : %s\n",
-		   chtostr(tmp, (u8 *) (work32 + 2), 16));
-	seq_printf(seq, "Product info  : %s\n",
-		   chtostr(tmp, (u8 *) (work32 + 6), 16));
-	seq_printf(seq, "Description   : %s\n",
-		   chtostr(tmp, (u8 *) (work32 + 10), 16));
-	seq_printf(seq, "Product rev.  : %s\n",
-		   chtostr(tmp, (u8 *) (work32 + 14), 8));
+	seq_printf(seq, "Vendor info   : %.16s\n", (u8 *) (work32 + 2));
+	seq_printf(seq, "Product info  : %.16s\n", (u8 *) (work32 + 6));
+	seq_printf(seq, "Description   : %.16s\n", (u8 *) (work32 + 10));
+	seq_printf(seq, "Product rev.  : %.8s\n", (u8 *) (work32 + 14));
 
 	seq_printf(seq, "Serial number : ");
 	print_serial_number(seq, (u8 *) (work32 + 16),
@@ -1306,8 +1291,6 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v)
 		u8 pad[256];	// allow up to 256 byte (max) serial number
 	} result;
 
-	char tmp[24 + 1];
-
 	token = i2o_parm_field_get(d, 0xF101, -1, &result, sizeof(result));
 
 	if (token < 0) {
@@ -1316,10 +1299,8 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v)
 	}
 
 	seq_printf(seq, "Registering DDM TID : 0x%03x\n", result.ddm_tid);
-	seq_printf(seq, "Module name         : %s\n",
-		   chtostr(tmp, result.module_name, 24));
-	seq_printf(seq, "Module revision     : %s\n",
-		   chtostr(tmp, result.module_rev, 8));
+	seq_printf(seq, "Module name         : %.24s\n", result.module_name);
+	seq_printf(seq, "Module revision     : %.8s\n", result.module_rev);
 
 	seq_printf(seq, "Serial number       : ");
 	print_serial_number(seq, result.serial_number, sizeof(result) - 36);
@@ -1343,8 +1324,6 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
 		u8 instance_number[4];
 	} result;
 
-	char tmp[64 + 1];
-
 	token = i2o_parm_field_get(d, 0xF102, -1, &result, sizeof(result));
 
 	if (token < 0) {
@@ -1352,14 +1331,10 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
 		return 0;
 	}
 
-	seq_printf(seq, "Device name     : %s\n",
-		   chtostr(tmp, result.device_name, 64));
-	seq_printf(seq, "Service name    : %s\n",
-		   chtostr(tmp, result.service_name, 64));
-	seq_printf(seq, "Physical name   : %s\n",
-		   chtostr(tmp, result.physical_location, 64));
-	seq_printf(seq, "Instance number : %s\n",
-		   chtostr(tmp, result.instance_number, 4));
+	seq_printf(seq, "Device name     : %.64s\n", result.device_name);
+	seq_printf(seq, "Service name    : %.64s\n", result.service_name);
+	seq_printf(seq, "Physical name   : %.64s\n", result.physical_location);
+	seq_printf(seq, "Instance number : %.4s\n", result.instance_number);
 
 	return 0;
 }
@@ -1368,9 +1343,9 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
 static int i2o_seq_show_sgl_limits(struct seq_file *seq, void *v)
 {
 	struct i2o_device *d = (struct i2o_device *)seq->private;
-	static u32 work32[12];
-	static u16 *work16 = (u16 *) work32;
-	static u8 *work8 = (u8 *) work32;
+	u32 work32[12];
+	u16 *work16 = (u16 *) work32;
+	u8 *work8 = (u8 *) work32;
 	int token;
 
 	token = i2o_parm_field_get(d, 0xF103, -1, &work32, sizeof(work32));
diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
index 92752fb..a7494f6 100644
--- a/drivers/message/i2o/iop.c
+++ b/drivers/message/i2o/iop.c
@@ -111,10 +111,10 @@ u32 i2o_cntxt_list_add(struct i2o_controller * c, void *ptr)
 
 	spin_lock_irqsave(&c->context_list_lock, flags);
 
-	if (unlikely(atomic_inc_and_test(&c->context_list_counter)))
-		atomic_inc(&c->context_list_counter);
+	if (unlikely(atomic_inc_and_test_unchecked(&c->context_list_counter)))
+		atomic_inc_unchecked(&c->context_list_counter);
 
-	entry->context = atomic_read(&c->context_list_counter);
+	entry->context = atomic_read_unchecked(&c->context_list_counter);
 
 	list_add(&entry->list, &c->context_list);
 
@@ -1076,7 +1076,7 @@ struct i2o_controller *i2o_iop_alloc(void)
 
 #if BITS_PER_LONG == 64
 	spin_lock_init(&c->context_list_lock);
-	atomic_set(&c->context_list_counter, 0);
+	atomic_set_unchecked(&c->context_list_counter, 0);
 	INIT_LIST_HEAD(&c->context_list);
 #endif
 
diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
index d1a22aa..d0f7bf7 100644
--- a/drivers/mfd/ab8500-debugfs.c
+++ b/drivers/mfd/ab8500-debugfs.c
@@ -100,7 +100,7 @@ static int irq_last;
 static u32 *irq_count;
 static int num_irqs;
 
-static struct device_attribute **dev_attr;
+static device_attribute_no_const **dev_attr;
 static char **event_name;
 
 static u8 avg_sample = SAMPLE_16;
diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
index a83eed5..62a58a9 100644
--- a/drivers/mfd/max8925-i2c.c
+++ b/drivers/mfd/max8925-i2c.c
@@ -152,7 +152,7 @@ static int max8925_probe(struct i2c_client *client,
 				   const struct i2c_device_id *id)
 {
 	struct max8925_platform_data *pdata = dev_get_platdata(&client->dev);
-	static struct max8925_chip *chip;
+	struct max8925_chip *chip;
 	struct device_node *node = client->dev.of_node;
 
 	if (node && !pdata) {
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index f9e42ea..614d240 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -230,7 +230,7 @@ static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 		    struct tps65910_platform_data *pdata)
 {
 	int ret = 0;
-	static struct regmap_irq_chip *tps6591x_irqs_chip;
+	struct regmap_irq_chip *tps6591x_irqs_chip;
 
 	if (!irq) {
 		dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index 596b1f6..5b6ab74 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -34,6 +34,7 @@
 #include <linux/of.h>
 #include <linux/irqdomain.h>
 #include <linux/i2c/twl.h>
+#include <asm/pgtable.h>
 
 #include "twl-core.h"
 
@@ -725,10 +726,12 @@ int twl4030_init_irq(struct device *dev, int irq_num)
 	 * Install an irq handler for each of the SIH modules;
 	 * clone dummy irq_chip since PIH can't *do* anything
 	 */
-	twl4030_irq_chip = dummy_irq_chip;
-	twl4030_irq_chip.name = "twl4030";
+	pax_open_kernel();
+	memcpy((void *)&twl4030_irq_chip, &dummy_irq_chip, sizeof twl4030_irq_chip);
+	*(const char **)&twl4030_irq_chip.name = "twl4030";
 
-	twl4030_sih_irq_chip.irq_ack = dummy_irq_chip.irq_ack;
+	*(void **)&twl4030_sih_irq_chip.irq_ack = dummy_irq_chip.irq_ack;
+	pax_close_kernel();
 
 	for (i = irq_base; i < irq_end; i++) {
 		irq_set_chip_and_handler(i, &twl4030_irq_chip,
diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
index 464419b..64bae8d 100644
--- a/drivers/misc/c2port/core.c
+++ b/drivers/misc/c2port/core.c
@@ -922,7 +922,9 @@ struct c2port_device *c2port_device_register(char *name,
 		goto error_idr_alloc;
 	c2dev->id = ret;
 
-	bin_attr_flash_data.size = ops->blocks_num * ops->block_size;
+	pax_open_kernel();
+	*(size_t *)&bin_attr_flash_data.size = ops->blocks_num * ops->block_size;
+	pax_close_kernel();
 
 	c2dev->dev = device_create(c2port_class, NULL, 0, c2dev,
 				   "c2port%d", c2dev->id);
diff --git a/drivers/misc/eeprom/sunxi_sid.c b/drivers/misc/eeprom/sunxi_sid.c
index 3f2b625..945e179 100644
--- a/drivers/misc/eeprom/sunxi_sid.c
+++ b/drivers/misc/eeprom/sunxi_sid.c
@@ -126,7 +126,9 @@ static int sunxi_sid_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, sid_data);
 
-	sid_bin_attr.size = sid_data->keysize;
+	pax_open_kernel();
+	*(size_t *)&sid_bin_attr.size = sid_data->keysize;
+	pax_close_kernel();
 	if (device_create_bin_file(&pdev->dev, &sid_bin_attr))
 		return -ENODEV;
 
diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
index 36f5d52..32311c3 100644
--- a/drivers/misc/kgdbts.c
+++ b/drivers/misc/kgdbts.c
@@ -834,7 +834,7 @@ static void run_plant_and_detach_test(int is_early)
 	char before[BREAK_INSTR_SIZE];
 	char after[BREAK_INSTR_SIZE];
 
-	probe_kernel_read(before, (char *)kgdbts_break_test,
+	probe_kernel_read(before, ktla_ktva((char *)kgdbts_break_test),
 	  BREAK_INSTR_SIZE);
 	init_simple_test();
 	ts.tst = plant_and_detach_test;
@@ -842,7 +842,7 @@ static void run_plant_and_detach_test(int is_early)
 	/* Activate test with initial breakpoint */
 	if (!is_early)
 		kgdb_breakpoint();
-	probe_kernel_read(after, (char *)kgdbts_break_test,
+	probe_kernel_read(after, ktla_ktva((char *)kgdbts_break_test),
 	  BREAK_INSTR_SIZE);
 	if (memcmp(before, after, BREAK_INSTR_SIZE)) {
 		printk(KERN_CRIT "kgdbts: ERROR kgdb corrupted memory\n");
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c
index 3ef4627..8d00486 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d.c
+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
@@ -497,7 +497,7 @@ static irqreturn_t lis302dl_interrupt(int irq, void *data)
 	 * the lid is closed. This leads to interrupts as soon as a little move
 	 * is done.
 	 */
-	atomic_inc(&lis3->count);
+	atomic_inc_unchecked(&lis3->count);
 
 	wake_up_interruptible(&lis3->misc_wait);
 	kill_fasync(&lis3->async_queue, SIGIO, POLL_IN);
@@ -583,7 +583,7 @@ static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
 	if (lis3->pm_dev)
 		pm_runtime_get_sync(lis3->pm_dev);
 
-	atomic_set(&lis3->count, 0);
+	atomic_set_unchecked(&lis3->count, 0);
 	return 0;
 }
 
@@ -615,7 +615,7 @@ static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
 	add_wait_queue(&lis3->misc_wait, &wait);
 	while (true) {
 		set_current_state(TASK_INTERRUPTIBLE);
-		data = atomic_xchg(&lis3->count, 0);
+		data = atomic_xchg_unchecked(&lis3->count, 0);
 		if (data)
 			break;
 
@@ -656,7 +656,7 @@ static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
 					      struct lis3lv02d, miscdev);
 
 	poll_wait(file, &lis3->misc_wait, wait);
-	if (atomic_read(&lis3->count))
+	if (atomic_read_unchecked(&lis3->count))
 		return POLLIN | POLLRDNORM;
 	return 0;
 }
diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h
index c439c82..1f20f57 100644
--- a/drivers/misc/lis3lv02d/lis3lv02d.h
+++ b/drivers/misc/lis3lv02d/lis3lv02d.h
@@ -297,7 +297,7 @@ struct lis3lv02d {
 	struct input_polled_dev	*idev;     /* input device */
 	struct platform_device	*pdev;     /* platform device */
 	struct regulator_bulk_data regulators[2];
-	atomic_t		count;     /* interrupt count after last read */
+	atomic_unchecked_t	count;     /* interrupt count after last read */
 	union axis_conversion	ac;        /* hw -> logical axis */
 	int			mapped_btns[3];
 
diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c
index 2f30bad..c4c13d0 100644
--- a/drivers/misc/sgi-gru/gruhandles.c
+++ b/drivers/misc/sgi-gru/gruhandles.c
@@ -44,8 +44,8 @@ static void update_mcs_stats(enum mcs_op op, unsigned long clks)
 	unsigned long nsec;
 
 	nsec = CLKS2NSEC(clks);
-	atomic_long_inc(&mcs_op_statistics[op].count);
-	atomic_long_add(nsec, &mcs_op_statistics[op].total);
+	atomic_long_inc_unchecked(&mcs_op_statistics[op].count);
+	atomic_long_add_unchecked(nsec, &mcs_op_statistics[op].total);
 	if (mcs_op_statistics[op].max < nsec)
 		mcs_op_statistics[op].max = nsec;
 }
diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index 4f76359..cdfcb2e 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -32,9 +32,9 @@
 
 #define printstat(s, f)		printstat_val(s, &gru_stats.f, #f)
 
-static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id)
+static void printstat_val(struct seq_file *s, atomic_long_unchecked_t *v, char *id)
 {
-	unsigned long val = atomic_long_read(v);
+	unsigned long val = atomic_long_read_unchecked(v);
 
 	seq_printf(s, "%16lu %s\n", val, id);
 }
@@ -134,8 +134,8 @@ static int mcs_statistics_show(struct seq_file *s, void *p)
 
 	seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks");
 	for (op = 0; op < mcsop_last; op++) {
-		count = atomic_long_read(&mcs_op_statistics[op].count);
-		total = atomic_long_read(&mcs_op_statistics[op].total);
+		count = atomic_long_read_unchecked(&mcs_op_statistics[op].count);
+		total = atomic_long_read_unchecked(&mcs_op_statistics[op].total);
 		max = mcs_op_statistics[op].max;
 		seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
 			   count ? total / count : 0, max);
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index 5c3ce24..4915ccb 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -167,82 +167,82 @@ extern unsigned int gru_max_gids;
  * GRU statistics.
  */
 struct gru_stats_s {
-	atomic_long_t vdata_alloc;
-	atomic_long_t vdata_free;
-	atomic_long_t gts_alloc;
-	atomic_long_t gts_free;
-	atomic_long_t gms_alloc;
-	atomic_long_t gms_free;
-	atomic_long_t gts_double_allocate;
-	atomic_long_t assign_context;
-	atomic_long_t assign_context_failed;
-	atomic_long_t free_context;
-	atomic_long_t load_user_context;
-	atomic_long_t load_kernel_context;
-	atomic_long_t lock_kernel_context;
-	atomic_long_t unlock_kernel_context;
-	atomic_long_t steal_user_context;
-	atomic_long_t steal_kernel_context;
-	atomic_long_t steal_context_failed;
-	atomic_long_t nopfn;
-	atomic_long_t asid_new;
-	atomic_long_t asid_next;
-	atomic_long_t asid_wrap;
-	atomic_long_t asid_reuse;
-	atomic_long_t intr;
-	atomic_long_t intr_cbr;
-	atomic_long_t intr_tfh;
-	atomic_long_t intr_spurious;
-	atomic_long_t intr_mm_lock_failed;
-	atomic_long_t call_os;
-	atomic_long_t call_os_wait_queue;
-	atomic_long_t user_flush_tlb;
-	atomic_long_t user_unload_context;
-	atomic_long_t user_exception;
-	atomic_long_t set_context_option;
-	atomic_long_t check_context_retarget_intr;
-	atomic_long_t check_context_unload;
-	atomic_long_t tlb_dropin;
-	atomic_long_t tlb_preload_page;
-	atomic_long_t tlb_dropin_fail_no_asid;
-	atomic_long_t tlb_dropin_fail_upm;
-	atomic_long_t tlb_dropin_fail_invalid;
-	atomic_long_t tlb_dropin_fail_range_active;
-	atomic_long_t tlb_dropin_fail_idle;
-	atomic_long_t tlb_dropin_fail_fmm;
-	atomic_long_t tlb_dropin_fail_no_exception;
-	atomic_long_t tfh_stale_on_fault;
-	atomic_long_t mmu_invalidate_range;
-	atomic_long_t mmu_invalidate_page;
-	atomic_long_t flush_tlb;
-	atomic_long_t flush_tlb_gru;
-	atomic_long_t flush_tlb_gru_tgh;
-	atomic_long_t flush_tlb_gru_zero_asid;
+	atomic_long_unchecked_t vdata_alloc;
+	atomic_long_unchecked_t vdata_free;
+	atomic_long_unchecked_t gts_alloc;
+	atomic_long_unchecked_t gts_free;
+	atomic_long_unchecked_t gms_alloc;
+	atomic_long_unchecked_t gms_free;
+	atomic_long_unchecked_t gts_double_allocate;
+	atomic_long_unchecked_t assign_context;
+	atomic_long_unchecked_t assign_context_failed;
+	atomic_long_unchecked_t free_context;
+	atomic_long_unchecked_t load_user_context;
+	atomic_long_unchecked_t load_kernel_context;
+	atomic_long_unchecked_t lock_kernel_context;
+	atomic_long_unchecked_t unlock_kernel_context;
+	atomic_long_unchecked_t steal_user_context;
+	atomic_long_unchecked_t steal_kernel_context;
+	atomic_long_unchecked_t steal_context_failed;
+	atomic_long_unchecked_t nopfn;
+	atomic_long_unchecked_t asid_new;
+	atomic_long_unchecked_t asid_next;
+	atomic_long_unchecked_t asid_wrap;
+	atomic_long_unchecked_t asid_reuse;
+	atomic_long_unchecked_t intr;
+	atomic_long_unchecked_t intr_cbr;
+	atomic_long_unchecked_t intr_tfh;
+	atomic_long_unchecked_t intr_spurious;
+	atomic_long_unchecked_t intr_mm_lock_failed;
+	atomic_long_unchecked_t call_os;
+	atomic_long_unchecked_t call_os_wait_queue;
+	atomic_long_unchecked_t user_flush_tlb;
+	atomic_long_unchecked_t user_unload_context;
+	atomic_long_unchecked_t user_exception;
+	atomic_long_unchecked_t set_context_option;
+	atomic_long_unchecked_t check_context_retarget_intr;
+	atomic_long_unchecked_t check_context_unload;
+	atomic_long_unchecked_t tlb_dropin;
+	atomic_long_unchecked_t tlb_preload_page;
+	atomic_long_unchecked_t tlb_dropin_fail_no_asid;
+	atomic_long_unchecked_t tlb_dropin_fail_upm;
+	atomic_long_unchecked_t tlb_dropin_fail_invalid;
+	atomic_long_unchecked_t tlb_dropin_fail_range_active;
+	atomic_long_unchecked_t tlb_dropin_fail_idle;
+	atomic_long_unchecked_t tlb_dropin_fail_fmm;
+	atomic_long_unchecked_t tlb_dropin_fail_no_exception;
+	atomic_long_unchecked_t tfh_stale_on_fault;
+	atomic_long_unchecked_t mmu_invalidate_range;
+	atomic_long_unchecked_t mmu_invalidate_page;
+	atomic_long_unchecked_t flush_tlb;
+	atomic_long_unchecked_t flush_tlb_gru;
+	atomic_long_unchecked_t flush_tlb_gru_tgh;
+	atomic_long_unchecked_t flush_tlb_gru_zero_asid;
 
-	atomic_long_t copy_gpa;
-	atomic_long_t read_gpa;
+	atomic_long_unchecked_t copy_gpa;
+	atomic_long_unchecked_t read_gpa;
 
-	atomic_long_t mesq_receive;
-	atomic_long_t mesq_receive_none;
-	atomic_long_t mesq_send;
-	atomic_long_t mesq_send_failed;
-	atomic_long_t mesq_noop;
-	atomic_long_t mesq_send_unexpected_error;
-	atomic_long_t mesq_send_lb_overflow;
-	atomic_long_t mesq_send_qlimit_reached;
-	atomic_long_t mesq_send_amo_nacked;
-	atomic_long_t mesq_send_put_nacked;
-	atomic_long_t mesq_page_overflow;
-	atomic_long_t mesq_qf_locked;
-	atomic_long_t mesq_qf_noop_not_full;
-	atomic_long_t mesq_qf_switch_head_failed;
-	atomic_long_t mesq_qf_unexpected_error;
-	atomic_long_t mesq_noop_unexpected_error;
-	atomic_long_t mesq_noop_lb_overflow;
-	atomic_long_t mesq_noop_qlimit_reached;
-	atomic_long_t mesq_noop_amo_nacked;
-	atomic_long_t mesq_noop_put_nacked;
-	atomic_long_t mesq_noop_page_overflow;
+	atomic_long_unchecked_t mesq_receive;
+	atomic_long_unchecked_t mesq_receive_none;
+	atomic_long_unchecked_t mesq_send;
+	atomic_long_unchecked_t mesq_send_failed;
+	atomic_long_unchecked_t mesq_noop;
+	atomic_long_unchecked_t mesq_send_unexpected_error;
+	atomic_long_unchecked_t mesq_send_lb_overflow;
+	atomic_long_unchecked_t mesq_send_qlimit_reached;
+	atomic_long_unchecked_t mesq_send_amo_nacked;
+	atomic_long_unchecked_t mesq_send_put_nacked;
+	atomic_long_unchecked_t mesq_page_overflow;
+	atomic_long_unchecked_t mesq_qf_locked;
+	atomic_long_unchecked_t mesq_qf_noop_not_full;
+	atomic_long_unchecked_t mesq_qf_switch_head_failed;
+	atomic_long_unchecked_t mesq_qf_unexpected_error;
+	atomic_long_unchecked_t mesq_noop_unexpected_error;
+	atomic_long_unchecked_t mesq_noop_lb_overflow;
+	atomic_long_unchecked_t mesq_noop_qlimit_reached;
+	atomic_long_unchecked_t mesq_noop_amo_nacked;
+	atomic_long_unchecked_t mesq_noop_put_nacked;
+	atomic_long_unchecked_t mesq_noop_page_overflow;
 
 };
 
@@ -251,8 +251,8 @@ enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync,
 	tghop_invalidate, mcsop_last};
 
 struct mcs_op_statistic {
-	atomic_long_t	count;
-	atomic_long_t	total;
+	atomic_long_unchecked_t	count;
+	atomic_long_unchecked_t	total;
 	unsigned long	max;
 };
 
@@ -275,7 +275,7 @@ extern struct mcs_op_statistic mcs_op_statistics[mcsop_last];
 
 #define STAT(id)	do {						\
 				if (gru_options & OPT_STATS)		\
-					atomic_long_inc(&gru_stats.id);	\
+					atomic_long_inc_unchecked(&gru_stats.id);	\
 			} while (0)
 
 #ifdef CONFIG_SGI_GRU_DEBUG
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
index c862cd4..0d176fe 100644
--- a/drivers/misc/sgi-xp/xp.h
+++ b/drivers/misc/sgi-xp/xp.h
@@ -288,7 +288,7 @@ struct xpc_interface {
 					xpc_notify_func, void *);
 	void (*received) (short, int, void *);
 	enum xp_retval (*partid_to_nasids) (short, void *);
-};
+} __no_const;
 
 extern struct xpc_interface xpc_interface;
 
diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
index 01be66d..e3a0c7e 100644
--- a/drivers/misc/sgi-xp/xp_main.c
+++ b/drivers/misc/sgi-xp/xp_main.c
@@ -78,13 +78,13 @@ xpc_notloaded(void)
 }
 
 struct xpc_interface xpc_interface = {
-	(void (*)(int))xpc_notloaded,
-	(void (*)(int))xpc_notloaded,
-	(enum xp_retval(*)(short, int, u32, void *, u16))xpc_notloaded,
-	(enum xp_retval(*)(short, int, u32, void *, u16, xpc_notify_func,
+	.connect = (void (*)(int))xpc_notloaded,
+	.disconnect = (void (*)(int))xpc_notloaded,
+	.send = (enum xp_retval(*)(short, int, u32, void *, u16))xpc_notloaded,
+	.send_notify = (enum xp_retval(*)(short, int, u32, void *, u16, xpc_notify_func,
 			   void *))xpc_notloaded,
-	(void (*)(short, int, void *))xpc_notloaded,
-	(enum xp_retval(*)(short, void *))xpc_notloaded
+	.received = (void (*)(short, int, void *))xpc_notloaded,
+	.partid_to_nasids = (enum xp_retval(*)(short, void *))xpc_notloaded
 };
 EXPORT_SYMBOL_GPL(xpc_interface);
 
diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
index b94d5f7..7f494c5 100644
--- a/drivers/misc/sgi-xp/xpc.h
+++ b/drivers/misc/sgi-xp/xpc.h
@@ -835,6 +835,7 @@ struct xpc_arch_operations {
 	void (*received_payload) (struct xpc_channel *, void *);
 	void (*notify_senders_of_disconnect) (struct xpc_channel *);
 };
+typedef struct xpc_arch_operations __no_const xpc_arch_operations_no_const;
 
 /* struct xpc_partition act_state values (for XPC HB) */
 
@@ -876,7 +877,7 @@ extern struct xpc_registration xpc_registrations[];
 /* found in xpc_main.c */
 extern struct device *xpc_part;
 extern struct device *xpc_chan;
-extern struct xpc_arch_operations xpc_arch_ops;
+extern xpc_arch_operations_no_const xpc_arch_ops;
 extern int xpc_disengage_timelimit;
 extern int xpc_disengage_timedout;
 extern int xpc_activate_IRQ_rcvd;
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index 82dc574..8539ab2 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -166,7 +166,7 @@ static struct notifier_block xpc_die_notifier = {
 	.notifier_call = xpc_system_die,
 };
 
-struct xpc_arch_operations xpc_arch_ops;
+xpc_arch_operations_no_const xpc_arch_ops;
 
 /*
  * Timer function to enforce the timelimit on the partition disengage.
@@ -1210,7 +1210,7 @@ xpc_system_die(struct notifier_block *nb, unsigned long event, void *_die_args)
 
 		if (((die_args->trapnr == X86_TRAP_MF) ||
 		     (die_args->trapnr == X86_TRAP_XF)) &&
-		    !user_mode_vm(die_args->regs))
+		    !user_mode(die_args->regs))
 			xpc_die_deactivate();
 
 		break;
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 452782b..0c10e40 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -574,7 +574,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
 	if (idata->ic.postsleep_min_us)
 		usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us);
 
-	if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) {
+	if (copy_to_user(ic_ptr->response, cmd.resp, sizeof(cmd.resp))) {
 		err = -EFAULT;
 		goto cmd_rel_host;
 	}
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
index f51b5ba..86614a7 100644
--- a/drivers/mmc/core/mmc_ops.c
+++ b/drivers/mmc/core/mmc_ops.c
@@ -247,7 +247,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
 	void *data_buf;
 	int is_on_stack;
 
-	is_on_stack = object_is_on_stack(buf);
+	is_on_stack = object_starts_on_stack(buf);
 	if (is_on_stack) {
 		/*
 		 * dma onto stack is unsafe/nonportable, but callers to this
diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
index 738fa24..1568451 100644
--- a/drivers/mmc/host/dw_mmc.h
+++ b/drivers/mmc/host/dw_mmc.h
@@ -257,5 +257,5 @@ struct dw_mci_drv_data {
 	int		(*parse_dt)(struct dw_mci *host);
 	int		(*execute_tuning)(struct dw_mci_slot *slot, u32 opcode,
 					struct dw_mci_tuning_data *tuning_data);
-};
+} __do_const;
 #endif /* _DW_MMC_H_ */
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 249ab80..9314ce1 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -1507,7 +1507,9 @@ static int mmci_probe(struct amba_device *dev,
 	mmc->caps |= MMC_CAP_CMD23;
 
 	if (variant->busy_detect) {
-		mmci_ops.card_busy = mmci_card_busy;
+		pax_open_kernel();
+		*(void **)&mmci_ops.card_busy = mmci_card_busy;
+		pax_close_kernel();
 		mmci_write_datactrlreg(host, MCI_ST_DPSM_BUSYMODE);
 		mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
 		mmc->max_busy_timeout = 0;
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index ccec0e3..199f9ce 100644
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -1034,9 +1034,12 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
 		host->mmc->caps |= MMC_CAP_1_8V_DDR;
 	}
 
-	if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING)
-		sdhci_esdhc_ops.platform_execute_tuning =
+	if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) {
+		pax_open_kernel();
+		*(void **)&sdhci_esdhc_ops.platform_execute_tuning =
 					esdhc_executing_tuning;
+		pax_close_kernel();
+	}
 
 	if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING)
 		writel(readl(host->ioaddr + ESDHC_TUNING_CTRL) |
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index fa5954a..56840e5 100644
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -584,9 +584,11 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
 	 * we can use overriding functions instead of default.
 	 */
 	if (sc->no_divider) {
-		sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock;
-		sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock;
-		sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
+		pax_open_kernel();
+		*(void **)&sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock;
+		*(void **)&sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock;
+		*(void **)&sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
+		pax_close_kernel();
 	}
 
 	/* It supports additional host capabilities if needed */
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 423666b..81ff5eb 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -666,7 +666,7 @@ cfi_staa_writev(struct mtd_info *mtd, const struct kvec *vecs,
 	size_t	 totlen = 0, thislen;
 	int	 ret = 0;
 	size_t	 buflen = 0;
-	static char *buffer;
+	char *buffer;
 
 	if (!ECCBUF_SIZE) {
 		/* We should fall back to a general writev implementation.
diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
index 9f2012a..a81c720 100644
--- a/drivers/mtd/nand/denali.c
+++ b/drivers/mtd/nand/denali.c
@@ -24,6 +24,7 @@
 #include <linux/slab.h>
 #include <linux/mtd/mtd.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 
 #include "denali.h"
 
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index f638cd8..2cbf586 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -387,7 +387,7 @@ void prepare_data_dma(struct gpmi_nand_data *this, enum dma_data_direction dr)
 
 	/* first try to map the upper buffer directly */
 	if (virt_addr_valid(this->upper_buf) &&
-		!object_is_on_stack(this->upper_buf)) {
+		!object_starts_on_stack(this->upper_buf)) {
 		sg_init_one(sgl, this->upper_buf, this->upper_len);
 		ret = dma_map_sg(this->dev, sgl, 1, dr);
 		if (ret == 0)
diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c
index 51b9d6a..52af9a7 100644
--- a/drivers/mtd/nftlmount.c
+++ b/drivers/mtd/nftlmount.c
@@ -24,6 +24,7 @@
 #include <asm/errno.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
+#include <linux/sched.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/nand.h>
 #include <linux/mtd/nftl.h>
diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
index cf49c22..971b133 100644
--- a/drivers/mtd/sm_ftl.c
+++ b/drivers/mtd/sm_ftl.c
@@ -56,7 +56,7 @@ static ssize_t sm_attr_show(struct device *dev, struct device_attribute *attr,
 #define SM_CIS_VENDOR_OFFSET 0x59
 static struct attribute_group *sm_create_sysfs_attributes(struct sm_ftl *ftl)
 {
-	struct attribute_group *attr_group;
+	attribute_group_no_const *attr_group;
 	struct attribute **attributes;
 	struct sm_sysfs_attribute *vendor_attribute;
 	char *vendor;
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 5ab3c18..5c3a836 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -542,7 +542,7 @@ nla_put_failure:
 	return -EMSGSIZE;
 }
 
-struct rtnl_link_ops bond_link_ops __read_mostly = {
+struct rtnl_link_ops bond_link_ops = {
 	.kind			= "bond",
 	.priv_size		= sizeof(struct bonding),
 	.setup			= bond_setup,
diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig
index 4168822..f38eeddf 100644
--- a/drivers/net/can/Kconfig
+++ b/drivers/net/can/Kconfig
@@ -98,7 +98,7 @@ config CAN_JANZ_ICAN3
 
 config CAN_FLEXCAN
 	tristate "Support for Freescale FLEXCAN based chips"
-	depends on ARM || PPC
+	depends on (ARM && CPU_LITTLE_ENDIAN) || PPC
 	---help---
 	  Say Y here if you want to support for Freescale FlexCAN.
 
diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c
index 1d162cc..b546a75 100644
--- a/drivers/net/ethernet/8390/ax88796.c
+++ b/drivers/net/ethernet/8390/ax88796.c
@@ -889,9 +889,11 @@ static int ax_probe(struct platform_device *pdev)
 	if (ax->plat->reg_offsets)
 		ei_local->reg_offset = ax->plat->reg_offsets;
 	else {
+		resource_size_t _mem_size = mem_size;
+		do_div(_mem_size, 0x18);
 		ei_local->reg_offset = ax->reg_offsets;
 		for (ret = 0; ret < 0x18; ret++)
-			ax->reg_offsets[ret] = (mem_size / 0x18) * ret;
+			ax->reg_offsets[ret] = _mem_size * ret;
 	}
 
 	if (!request_mem_region(mem->start, mem_size, pdev->name)) {
diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 7330681..7e9e463 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c
@@ -1182,7 +1182,7 @@ static int tse_shutdown(struct net_device *dev)
 	return 0;
 }
 
-static struct net_device_ops altera_tse_netdev_ops = {
+static net_device_ops_no_const altera_tse_netdev_ops __read_only = {
 	.ndo_open		= tse_open,
 	.ndo_stop		= tse_shutdown,
 	.ndo_start_xmit		= tse_start_xmit,
@@ -1439,11 +1439,13 @@ static int altera_tse_probe(struct platform_device *pdev)
 	ndev->netdev_ops = &altera_tse_netdev_ops;
 	altera_tse_set_ethtool_ops(ndev);
 
+	pax_open_kernel();
 	altera_tse_netdev_ops.ndo_set_rx_mode = tse_set_rx_mode;
 
 	if (priv->hash_filter)
 		altera_tse_netdev_ops.ndo_set_rx_mode =
 			tse_set_rx_mode_hashfilter;
+	pax_close_kernel();
 
 	/* Scatter/gather IO is not supported,
 	 * so it is turned off
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
index bf462ee8..18b8375 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h
@@ -986,14 +986,14 @@ do {									\
  * operations, everything works on mask values.
  */
 #define XMDIO_READ(_pdata, _mmd, _reg)					\
-	((_pdata)->hw_if.read_mmd_regs((_pdata), 0,			\
+	((_pdata)->hw_if->read_mmd_regs((_pdata), 0,			\
 		MII_ADDR_C45 | (_mmd << 16) | ((_reg) & 0xffff)))
 
 #define XMDIO_READ_BITS(_pdata, _mmd, _reg, _mask)			\
 	(XMDIO_READ((_pdata), _mmd, _reg) & _mask)
 
 #define XMDIO_WRITE(_pdata, _mmd, _reg, _val)				\
-	((_pdata)->hw_if.write_mmd_regs((_pdata), 0,			\
+	((_pdata)->hw_if->write_mmd_regs((_pdata), 0,			\
 		MII_ADDR_C45 | (_mmd << 16) | ((_reg) & 0xffff), (_val)))
 
 #define XMDIO_WRITE_BITS(_pdata, _mmd, _reg, _mask, _val)		\
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c b/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c
index 6bb76d5..ded47a8 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-debugfs.c
@@ -273,7 +273,7 @@ static ssize_t xpcs_reg_value_read(struct file *filp, char __user *buffer,
 	struct xgbe_prv_data *pdata = filp->private_data;
 	unsigned int value;
 
-	value = pdata->hw_if.read_mmd_regs(pdata, pdata->debugfs_xpcs_mmd,
+	value = pdata->hw_if->read_mmd_regs(pdata, pdata->debugfs_xpcs_mmd,
 					   pdata->debugfs_xpcs_reg);
 
 	return xgbe_common_read(buffer, count, ppos, value);
@@ -291,7 +291,7 @@ static ssize_t xpcs_reg_value_write(struct file *filp,
 	if (len < 0)
 		return len;
 
-	pdata->hw_if.write_mmd_regs(pdata, pdata->debugfs_xpcs_mmd,
+	pdata->hw_if->write_mmd_regs(pdata, pdata->debugfs_xpcs_mmd,
 				    pdata->debugfs_xpcs_reg, value);
 
 	return len;
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
index 6f1c859..e96ac1a 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
@@ -236,7 +236,7 @@ err_ring:
 
 static void xgbe_wrapper_tx_descriptor_init(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct xgbe_channel *channel;
 	struct xgbe_ring *ring;
 	struct xgbe_ring_data *rdata;
@@ -277,7 +277,7 @@ static void xgbe_wrapper_tx_descriptor_init(struct xgbe_prv_data *pdata)
 
 static void xgbe_wrapper_rx_descriptor_init(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct xgbe_channel *channel;
 	struct xgbe_ring *ring;
 	struct xgbe_ring_desc *rdesc;
@@ -496,7 +496,7 @@ err_out:
 static void xgbe_realloc_skb(struct xgbe_channel *channel)
 {
 	struct xgbe_prv_data *pdata = channel->pdata;
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct xgbe_ring *ring = channel->rx_ring;
 	struct xgbe_ring_data *rdata;
 	struct sk_buff *skb = NULL;
@@ -540,17 +540,12 @@ static void xgbe_realloc_skb(struct xgbe_channel *channel)
 	DBGPR("<--xgbe_realloc_skb\n");
 }
 
-void xgbe_init_function_ptrs_desc(struct xgbe_desc_if *desc_if)
-{
-	DBGPR("-->xgbe_init_function_ptrs_desc\n");
-
-	desc_if->alloc_ring_resources = xgbe_alloc_ring_resources;
-	desc_if->free_ring_resources = xgbe_free_ring_resources;
-	desc_if->map_tx_skb = xgbe_map_tx_skb;
-	desc_if->realloc_skb = xgbe_realloc_skb;
-	desc_if->unmap_skb = xgbe_unmap_skb;
-	desc_if->wrapper_tx_desc_init = xgbe_wrapper_tx_descriptor_init;
-	desc_if->wrapper_rx_desc_init = xgbe_wrapper_rx_descriptor_init;
-
-	DBGPR("<--xgbe_init_function_ptrs_desc\n");
-}
+const struct xgbe_desc_if default_xgbe_desc_if = {
+	.alloc_ring_resources = xgbe_alloc_ring_resources,
+	.free_ring_resources = xgbe_free_ring_resources,
+	.map_tx_skb = xgbe_map_tx_skb,
+	.realloc_skb = xgbe_realloc_skb,
+	.unmap_skb = xgbe_unmap_skb,
+	.wrapper_tx_desc_init = xgbe_wrapper_tx_descriptor_init,
+	.wrapper_rx_desc_init = xgbe_wrapper_rx_descriptor_init,
+};
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
index 002293b..5ced1dd 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-dev.c
@@ -2030,7 +2030,7 @@ static void xgbe_powerdown_rx(struct xgbe_prv_data *pdata)
 
 static int xgbe_init(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	int ret;
 
 	DBGPR("-->xgbe_init\n");
@@ -2096,87 +2096,82 @@ static int xgbe_init(struct xgbe_prv_data *pdata)
 	return 0;
 }
 
-void xgbe_init_function_ptrs_dev(struct xgbe_hw_if *hw_if)
-{
-	DBGPR("-->xgbe_init_function_ptrs\n");
-
-	hw_if->tx_complete = xgbe_tx_complete;
-
-	hw_if->set_promiscuous_mode = xgbe_set_promiscuous_mode;
-	hw_if->set_all_multicast_mode = xgbe_set_all_multicast_mode;
-	hw_if->set_addn_mac_addrs = xgbe_set_addn_mac_addrs;
-	hw_if->set_mac_address = xgbe_set_mac_address;
-
-	hw_if->enable_rx_csum = xgbe_enable_rx_csum;
-	hw_if->disable_rx_csum = xgbe_disable_rx_csum;
-
-	hw_if->enable_rx_vlan_stripping = xgbe_enable_rx_vlan_stripping;
-	hw_if->disable_rx_vlan_stripping = xgbe_disable_rx_vlan_stripping;
-
-	hw_if->read_mmd_regs = xgbe_read_mmd_regs;
-	hw_if->write_mmd_regs = xgbe_write_mmd_regs;
-
-	hw_if->set_gmii_speed = xgbe_set_gmii_speed;
-	hw_if->set_gmii_2500_speed = xgbe_set_gmii_2500_speed;
-	hw_if->set_xgmii_speed = xgbe_set_xgmii_speed;
-
-	hw_if->enable_tx = xgbe_enable_tx;
-	hw_if->disable_tx = xgbe_disable_tx;
-	hw_if->enable_rx = xgbe_enable_rx;
-	hw_if->disable_rx = xgbe_disable_rx;
-
-	hw_if->powerup_tx = xgbe_powerup_tx;
-	hw_if->powerdown_tx = xgbe_powerdown_tx;
-	hw_if->powerup_rx = xgbe_powerup_rx;
-	hw_if->powerdown_rx = xgbe_powerdown_rx;
-
-	hw_if->pre_xmit = xgbe_pre_xmit;
-	hw_if->dev_read = xgbe_dev_read;
-	hw_if->enable_int = xgbe_enable_int;
-	hw_if->disable_int = xgbe_disable_int;
-	hw_if->init = xgbe_init;
-	hw_if->exit = xgbe_exit;
+const struct xgbe_hw_if default_xgbe_hw_if = {
+	.tx_complete = xgbe_tx_complete,
+
+	.set_promiscuous_mode = xgbe_set_promiscuous_mode,
+	.set_all_multicast_mode = xgbe_set_all_multicast_mode,
+	.set_addn_mac_addrs = xgbe_set_addn_mac_addrs,
+	.set_mac_address = xgbe_set_mac_address,
+
+	.enable_rx_csum = xgbe_enable_rx_csum,
+	.disable_rx_csum = xgbe_disable_rx_csum,
+
+	.enable_rx_vlan_stripping = xgbe_enable_rx_vlan_stripping,
+	.disable_rx_vlan_stripping = xgbe_disable_rx_vlan_stripping,
+
+	.read_mmd_regs = xgbe_read_mmd_regs,
+	.write_mmd_regs = xgbe_write_mmd_regs,
+
+	.set_gmii_speed = xgbe_set_gmii_speed,
+	.set_gmii_2500_speed = xgbe_set_gmii_2500_speed,
+	.set_xgmii_speed = xgbe_set_xgmii_speed,
+
+	.enable_tx = xgbe_enable_tx,
+	.disable_tx = xgbe_disable_tx,
+	.enable_rx = xgbe_enable_rx,
+	.disable_rx = xgbe_disable_rx,
+
+	.powerup_tx = xgbe_powerup_tx,
+	.powerdown_tx = xgbe_powerdown_tx,
+	.powerup_rx = xgbe_powerup_rx,
+	.powerdown_rx = xgbe_powerdown_rx,
+
+	.pre_xmit = xgbe_pre_xmit,
+	.dev_read = xgbe_dev_read,
+	.enable_int = xgbe_enable_int,
+	.disable_int = xgbe_disable_int,
+	.init = xgbe_init,
+	.exit = xgbe_exit,
 
 	/* Descriptor related Sequences have to be initialized here */
-	hw_if->tx_desc_init = xgbe_tx_desc_init;
-	hw_if->rx_desc_init = xgbe_rx_desc_init;
-	hw_if->tx_desc_reset = xgbe_tx_desc_reset;
-	hw_if->rx_desc_reset = xgbe_rx_desc_reset;
-	hw_if->is_last_desc = xgbe_is_last_desc;
-	hw_if->is_context_desc = xgbe_is_context_desc;
+	.tx_desc_init = xgbe_tx_desc_init,
+	.rx_desc_init = xgbe_rx_desc_init,
+	.tx_desc_reset = xgbe_tx_desc_reset,
+	.rx_desc_reset = xgbe_rx_desc_reset,
+	.is_last_desc = xgbe_is_last_desc,
+	.is_context_desc = xgbe_is_context_desc,
 
 	/* For FLOW ctrl */
-	hw_if->config_tx_flow_control = xgbe_config_tx_flow_control;
-	hw_if->config_rx_flow_control = xgbe_config_rx_flow_control;
+	.config_tx_flow_control = xgbe_config_tx_flow_control,
+	.config_rx_flow_control = xgbe_config_rx_flow_control,
 
 	/* For RX coalescing */
-	hw_if->config_rx_coalesce = xgbe_config_rx_coalesce;
-	hw_if->config_tx_coalesce = xgbe_config_tx_coalesce;
-	hw_if->usec_to_riwt = xgbe_usec_to_riwt;
-	hw_if->riwt_to_usec = xgbe_riwt_to_usec;
+	.config_rx_coalesce = xgbe_config_rx_coalesce,
+	.config_tx_coalesce = xgbe_config_tx_coalesce,
+	.usec_to_riwt = xgbe_usec_to_riwt,
+	.riwt_to_usec = xgbe_riwt_to_usec,
 
 	/* For RX and TX threshold config */
-	hw_if->config_rx_threshold = xgbe_config_rx_threshold;
-	hw_if->config_tx_threshold = xgbe_config_tx_threshold;
+	.config_rx_threshold = xgbe_config_rx_threshold,
+	.config_tx_threshold = xgbe_config_tx_threshold,
 
 	/* For RX and TX Store and Forward Mode config */
-	hw_if->config_rsf_mode = xgbe_config_rsf_mode;
-	hw_if->config_tsf_mode = xgbe_config_tsf_mode;
+	.config_rsf_mode = xgbe_config_rsf_mode,
+	.config_tsf_mode = xgbe_config_tsf_mode,
 
 	/* For TX DMA Operating on Second Frame config */
-	hw_if->config_osp_mode = xgbe_config_osp_mode;
+	.config_osp_mode = xgbe_config_osp_mode,
 
 	/* For RX and TX PBL config */
-	hw_if->config_rx_pbl_val = xgbe_config_rx_pbl_val;
-	hw_if->get_rx_pbl_val = xgbe_get_rx_pbl_val;
-	hw_if->config_tx_pbl_val = xgbe_config_tx_pbl_val;
-	hw_if->get_tx_pbl_val = xgbe_get_tx_pbl_val;
-	hw_if->config_pblx8 = xgbe_config_pblx8;
+	.config_rx_pbl_val = xgbe_config_rx_pbl_val,
+	.get_rx_pbl_val = xgbe_get_rx_pbl_val,
+	.config_tx_pbl_val = xgbe_config_tx_pbl_val,
+	.get_tx_pbl_val = xgbe_get_tx_pbl_val,
+	.config_pblx8 = xgbe_config_pblx8,
 
 	/* For MMC statistics support */
-	hw_if->tx_mmc_int = xgbe_tx_mmc_int;
-	hw_if->rx_mmc_int = xgbe_rx_mmc_int;
-	hw_if->read_mmc_stats = xgbe_read_mmc_stats;
-
-	DBGPR("<--xgbe_init_function_ptrs\n");
-}
+	.tx_mmc_int = xgbe_tx_mmc_int,
+	.rx_mmc_int = xgbe_rx_mmc_int,
+	.read_mmc_stats = xgbe_read_mmc_stats,
+};
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
index cfe3d93..07a78ae 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c
@@ -153,7 +153,7 @@ static int xgbe_calc_rx_buf_size(struct net_device *netdev, unsigned int mtu)
 
 static void xgbe_enable_rx_tx_ints(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct xgbe_channel *channel;
 	unsigned int i;
 
@@ -170,7 +170,7 @@ static void xgbe_enable_rx_tx_ints(struct xgbe_prv_data *pdata)
 
 static void xgbe_disable_rx_tx_ints(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct xgbe_channel *channel;
 	unsigned int i;
 
@@ -188,7 +188,7 @@ static void xgbe_disable_rx_tx_ints(struct xgbe_prv_data *pdata)
 static irqreturn_t xgbe_isr(int irq, void *data)
 {
 	struct xgbe_prv_data *pdata = data;
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct xgbe_channel *channel;
 	unsigned int dma_isr, dma_ch_isr;
 	unsigned int mac_isr;
@@ -403,7 +403,7 @@ static void xgbe_napi_disable(struct xgbe_prv_data *pdata)
 
 void xgbe_init_tx_coalesce(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 
 	DBGPR("-->xgbe_init_tx_coalesce\n");
 
@@ -417,7 +417,7 @@ void xgbe_init_tx_coalesce(struct xgbe_prv_data *pdata)
 
 void xgbe_init_rx_coalesce(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 
 	DBGPR("-->xgbe_init_rx_coalesce\n");
 
@@ -431,7 +431,7 @@ void xgbe_init_rx_coalesce(struct xgbe_prv_data *pdata)
 
 static void xgbe_free_tx_skbuff(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	struct xgbe_channel *channel;
 	struct xgbe_ring *ring;
 	struct xgbe_ring_data *rdata;
@@ -456,7 +456,7 @@ static void xgbe_free_tx_skbuff(struct xgbe_prv_data *pdata)
 
 static void xgbe_free_rx_skbuff(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	struct xgbe_channel *channel;
 	struct xgbe_ring *ring;
 	struct xgbe_ring_data *rdata;
@@ -482,7 +482,7 @@ static void xgbe_free_rx_skbuff(struct xgbe_prv_data *pdata)
 int xgbe_powerdown(struct net_device *netdev, unsigned int caller)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	unsigned long flags;
 
 	DBGPR("-->xgbe_powerdown\n");
@@ -520,7 +520,7 @@ int xgbe_powerdown(struct net_device *netdev, unsigned int caller)
 int xgbe_powerup(struct net_device *netdev, unsigned int caller)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	unsigned long flags;
 
 	DBGPR("-->xgbe_powerup\n");
@@ -557,7 +557,7 @@ int xgbe_powerup(struct net_device *netdev, unsigned int caller)
 
 static int xgbe_start(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct net_device *netdev = pdata->netdev;
 
 	DBGPR("-->xgbe_start\n");
@@ -583,7 +583,7 @@ static int xgbe_start(struct xgbe_prv_data *pdata)
 
 static void xgbe_stop(struct xgbe_prv_data *pdata)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct net_device *netdev = pdata->netdev;
 
 	DBGPR("-->xgbe_stop\n");
@@ -603,7 +603,7 @@ static void xgbe_stop(struct xgbe_prv_data *pdata)
 
 static void xgbe_restart_dev(struct xgbe_prv_data *pdata, unsigned int reset)
 {
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 
 	DBGPR("-->xgbe_restart_dev\n");
 
@@ -741,8 +741,8 @@ static void xgbe_packet_info(struct xgbe_ring *ring, struct sk_buff *skb,
 static int xgbe_open(struct net_device *netdev)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	int ret;
 
 	DBGPR("-->xgbe_open\n");
@@ -804,8 +804,8 @@ err_clk:
 static int xgbe_close(struct net_device *netdev)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 
 	DBGPR("-->xgbe_close\n");
 
@@ -835,8 +835,8 @@ static int xgbe_close(struct net_device *netdev)
 static int xgbe_xmit(struct sk_buff *skb, struct net_device *netdev)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	struct xgbe_channel *channel;
 	struct xgbe_ring *ring;
 	struct xgbe_packet_data *packet;
@@ -903,7 +903,7 @@ tx_netdev_return:
 static void xgbe_set_rx_mode(struct net_device *netdev)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	unsigned int pr_mode, am_mode;
 
 	DBGPR("-->xgbe_set_rx_mode\n");
@@ -930,7 +930,7 @@ static void xgbe_set_rx_mode(struct net_device *netdev)
 static int xgbe_set_mac_address(struct net_device *netdev, void *addr)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct sockaddr *saddr = addr;
 
 	DBGPR("-->xgbe_set_mac_address\n");
@@ -976,7 +976,7 @@ static struct rtnl_link_stats64 *xgbe_get_stats64(struct net_device *netdev,
 
 	DBGPR("-->%s\n", __func__);
 
-	pdata->hw_if.read_mmc_stats(pdata);
+	pdata->hw_if->read_mmc_stats(pdata);
 
 	s->rx_packets = pstats->rxframecount_gb;
 	s->rx_bytes = pstats->rxoctetcount_gb;
@@ -1020,7 +1020,7 @@ static int xgbe_set_features(struct net_device *netdev,
 			     netdev_features_t features)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	unsigned int rxcsum_enabled, rxvlan_enabled;
 
 	rxcsum_enabled = !!(pdata->netdev_features & NETIF_F_RXCSUM);
@@ -1072,8 +1072,8 @@ struct net_device_ops *xgbe_get_netdev_ops(void)
 static int xgbe_tx_poll(struct xgbe_channel *channel)
 {
 	struct xgbe_prv_data *pdata = channel->pdata;
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	struct xgbe_ring *ring = channel->tx_ring;
 	struct xgbe_ring_data *rdata;
 	struct xgbe_ring_desc *rdesc;
@@ -1124,8 +1124,8 @@ static int xgbe_tx_poll(struct xgbe_channel *channel)
 static int xgbe_rx_poll(struct xgbe_channel *channel, int budget)
 {
 	struct xgbe_prv_data *pdata = channel->pdata;
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
-	struct xgbe_desc_if *desc_if = &pdata->desc_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
+	struct xgbe_desc_if *desc_if = pdata->desc_if;
 	struct xgbe_ring *ring = channel->rx_ring;
 	struct xgbe_ring_data *rdata;
 	struct xgbe_packet_data *packet;
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c b/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
index 8909f2b..719e767 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
@@ -202,7 +202,7 @@ static void xgbe_get_ethtool_stats(struct net_device *netdev,
 
 	DBGPR("-->%s\n", __func__);
 
-	pdata->hw_if.read_mmc_stats(pdata);
+	pdata->hw_if->read_mmc_stats(pdata);
 	for (i = 0; i < XGBE_STATS_COUNT; i++) {
 		stat = (u8 *)pdata + xgbe_gstring_stats[i].stat_offset;
 		*data++ = *(u64 *)stat;
@@ -387,7 +387,7 @@ static int xgbe_get_coalesce(struct net_device *netdev,
 			     struct ethtool_coalesce *ec)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	unsigned int riwt;
 
 	DBGPR("-->xgbe_get_coalesce\n");
@@ -410,7 +410,7 @@ static int xgbe_set_coalesce(struct net_device *netdev,
 			     struct ethtool_coalesce *ec)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	unsigned int rx_frames, rx_riwt, rx_usecs;
 	unsigned int tx_frames, tx_usecs;
 
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-main.c b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
index 5a1891f..1b7888e 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-main.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-main.c
@@ -210,12 +210,6 @@ static void xgbe_default_config(struct xgbe_prv_data *pdata)
 	DBGPR("<--xgbe_default_config\n");
 }
 
-static void xgbe_init_all_fptrs(struct xgbe_prv_data *pdata)
-{
-	xgbe_init_function_ptrs_dev(&pdata->hw_if);
-	xgbe_init_function_ptrs_desc(&pdata->desc_if);
-}
-
 static int xgbe_probe(struct platform_device *pdev)
 {
 	struct xgbe_prv_data *pdata;
@@ -306,9 +300,8 @@ static int xgbe_probe(struct platform_device *pdev)
 	netdev->base_addr = (unsigned long)pdata->xgmac_regs;
 
 	/* Set all the function pointers */
-	xgbe_init_all_fptrs(pdata);
-	hw_if = &pdata->hw_if;
-	desc_if = &pdata->desc_if;
+	hw_if = pdata->hw_if = &default_xgbe_hw_if;
+	desc_if = pdata->desc_if = &default_xgbe_desc_if;
 
 	/* Issue software reset to device */
 	hw_if->exit(pdata);
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
index ea7a5d6..d10a742 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-mdio.c
@@ -128,7 +128,7 @@
 static int xgbe_mdio_read(struct mii_bus *mii, int prtad, int mmd_reg)
 {
 	struct xgbe_prv_data *pdata = mii->priv;
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	int mmd_data;
 
 	DBGPR_MDIO("-->xgbe_mdio_read: prtad=%#x mmd_reg=%#x\n",
@@ -145,7 +145,7 @@ static int xgbe_mdio_write(struct mii_bus *mii, int prtad, int mmd_reg,
 			   u16 mmd_val)
 {
 	struct xgbe_prv_data *pdata = mii->priv;
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	int mmd_data = mmd_val;
 
 	DBGPR_MDIO("-->xgbe_mdio_write: prtad=%#x mmd_reg=%#x mmd_data=%#x\n",
@@ -161,7 +161,7 @@ static int xgbe_mdio_write(struct mii_bus *mii, int prtad, int mmd_reg,
 static void xgbe_adjust_link(struct net_device *netdev)
 {
 	struct xgbe_prv_data *pdata = netdev_priv(netdev);
-	struct xgbe_hw_if *hw_if = &pdata->hw_if;
+	struct xgbe_hw_if *hw_if = pdata->hw_if;
 	struct phy_device *phydev = pdata->phydev;
 	unsigned long flags;
 	int new_state = 0;
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h
index ab06271..a560fa7 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe.h
+++ b/drivers/net/ethernet/amd/xgbe/xgbe.h
@@ -527,8 +527,8 @@ struct xgbe_prv_data {
 
 	int irq_number;
 
-	struct xgbe_hw_if hw_if;
-	struct xgbe_desc_if desc_if;
+	const struct xgbe_hw_if *hw_if;
+	const struct xgbe_desc_if *desc_if;
 
 	/* Rings for Tx/Rx on a DMA channel */
 	struct xgbe_channel *channel;
@@ -611,6 +611,9 @@ struct xgbe_prv_data {
 #endif
 };
 
+extern const struct xgbe_hw_if default_xgbe_hw_if;
+extern const struct xgbe_desc_if default_xgbe_desc_if;
+
 /* Function prototypes*/
 
 void xgbe_init_function_ptrs_dev(struct xgbe_hw_if *);
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
index 571427c..e9fe9e7 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
@@ -1058,7 +1058,7 @@ static inline u8 bnx2x_get_path_func_num(struct bnx2x *bp)
 static inline void bnx2x_init_bp_objs(struct bnx2x *bp)
 {
 	/* RX_MODE controlling object */
-	bnx2x_init_rx_mode_obj(bp, &bp->rx_mode_obj);
+	bnx2x_init_rx_mode_obj(bp);
 
 	/* multicast configuration controlling object */
 	bnx2x_init_mcast_obj(bp, &bp->mcast_obj, bp->fp->cl_id, bp->fp->cid,
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
index b193604..8873bfd 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
@@ -2329,15 +2329,14 @@ int bnx2x_config_rx_mode(struct bnx2x *bp,
 	return rc;
 }
 
-void bnx2x_init_rx_mode_obj(struct bnx2x *bp,
-			    struct bnx2x_rx_mode_obj *o)
+void bnx2x_init_rx_mode_obj(struct bnx2x *bp)
 {
 	if (CHIP_IS_E1x(bp)) {
-		o->wait_comp      = bnx2x_empty_rx_mode_wait;
-		o->config_rx_mode = bnx2x_set_rx_mode_e1x;
+		bp->rx_mode_obj.wait_comp      = bnx2x_empty_rx_mode_wait;
+		bp->rx_mode_obj.config_rx_mode = bnx2x_set_rx_mode_e1x;
 	} else {
-		o->wait_comp      = bnx2x_wait_rx_mode_comp_e2;
-		o->config_rx_mode = bnx2x_set_rx_mode_e2;
+		bp->rx_mode_obj.wait_comp      = bnx2x_wait_rx_mode_comp_e2;
+		bp->rx_mode_obj.config_rx_mode = bnx2x_set_rx_mode_e2;
 	}
 }
 
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
index 718ecd2..2183b2f 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
@@ -1340,8 +1340,7 @@ int bnx2x_vlan_mac_move(struct bnx2x *bp,
 
 /********************* RX MODE ****************/
 
-void bnx2x_init_rx_mode_obj(struct bnx2x *bp,
-			    struct bnx2x_rx_mode_obj *o);
+void bnx2x_init_rx_mode_obj(struct bnx2x *bp);
 
 /**
  * bnx2x_config_rx_mode - Send and RX_MODE ramrod according to the provided parameters.
diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h
index 461acca..2b546ba 100644
--- a/drivers/net/ethernet/broadcom/tg3.h
+++ b/drivers/net/ethernet/broadcom/tg3.h
@@ -150,6 +150,7 @@
 #define  CHIPREV_ID_5750_A0		 0x4000
 #define  CHIPREV_ID_5750_A1		 0x4001
 #define  CHIPREV_ID_5750_A3		 0x4003
+#define  CHIPREV_ID_5750_C1		 0x4201
 #define  CHIPREV_ID_5750_C2		 0x4202
 #define  CHIPREV_ID_5752_A0_HW		 0x5000
 #define  CHIPREV_ID_5752_A0		 0x6000
diff --git a/drivers/net/ethernet/brocade/bna/bna_enet.c b/drivers/net/ethernet/brocade/bna/bna_enet.c
index 13f9636..228040f 100644
--- a/drivers/net/ethernet/brocade/bna/bna_enet.c
+++ b/drivers/net/ethernet/brocade/bna/bna_enet.c
@@ -1690,10 +1690,10 @@ bna_cb_ioceth_reset(void *arg)
 }
 
 static struct bfa_ioc_cbfn bna_ioceth_cbfn = {
-	bna_cb_ioceth_enable,
-	bna_cb_ioceth_disable,
-	bna_cb_ioceth_hbfail,
-	bna_cb_ioceth_reset
+	.enable_cbfn = bna_cb_ioceth_enable,
+	.disable_cbfn = bna_cb_ioceth_disable,
+	.hbfail_cbfn = bna_cb_ioceth_hbfail,
+	.reset_cbfn = bna_cb_ioceth_reset
 };
 
 static void bna_attr_init(struct bna_ioceth *ioceth)
diff --git a/drivers/net/ethernet/chelsio/cxgb3/l2t.h b/drivers/net/ethernet/chelsio/cxgb3/l2t.h
index 8cffcdf..aadf043 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/l2t.h
+++ b/drivers/net/ethernet/chelsio/cxgb3/l2t.h
@@ -87,7 +87,7 @@ typedef void (*arp_failure_handler_func)(struct t3cdev * dev,
  */
 struct l2t_skb_cb {
 	arp_failure_handler_func arp_failure_handler;
-};
+} __no_const;
 
 #define L2T_SKB_CB(skb) ((struct l2t_skb_cb *)(skb)->cb)
 
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
index a83271c..cf00874 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
@@ -2174,7 +2174,7 @@ static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
 
 	int i;
 	struct adapter *ap = netdev2adap(dev);
-	static const unsigned int *reg_ranges;
+	const unsigned int *reg_ranges;
 	int arr_size = 0, buf_size = 0;
 
 	if (is_t4(ap->params.chip)) {
diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c
index c05b66d..ed69872 100644
--- a/drivers/net/ethernet/dec/tulip/de4x5.c
+++ b/drivers/net/ethernet/dec/tulip/de4x5.c
@@ -5388,7 +5388,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	for (i=0; i<ETH_ALEN; i++) {
 	    tmp.addr[i] = dev->dev_addr[i];
 	}
-	if (copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT;
+	if (ioc->len > sizeof tmp.addr || copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT;
 	break;
 
     case DE4X5_SET_HWADDR:           /* Set the hardware address */
@@ -5428,7 +5428,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	spin_lock_irqsave(&lp->lock, flags);
 	memcpy(&statbuf, &lp->pktStats, ioc->len);
 	spin_unlock_irqrestore(&lp->lock, flags);
-	if (copy_to_user(ioc->data, &statbuf, ioc->len))
+	if (ioc->len > sizeof statbuf || copy_to_user(ioc->data, &statbuf, ioc->len))
 		return -EFAULT;
 	break;
     }
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index 1e187fb..d024547 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -533,7 +533,7 @@ static void accumulate_16bit_val(u32 *acc, u16 val)
 
 	if (wrapped)
 		newacc += 65536;
-	ACCESS_ONCE(*acc) = newacc;
+	ACCESS_ONCE_RW(*acc) = newacc;
 }
 
 static void populate_erx_stats(struct be_adapter *adapter,
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
index c77fa4a..7fd42fc 100644
--- a/drivers/net/ethernet/faraday/ftgmac100.c
+++ b/drivers/net/ethernet/faraday/ftgmac100.c
@@ -30,6 +30,8 @@
 #include <linux/netdevice.h>
 #include <linux/phy.h>
 #include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
 #include <net/ip.h>
 
 #include "ftgmac100.h"
diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c
index 4ff1adc..0ea6bf4 100644
--- a/drivers/net/ethernet/faraday/ftmac100.c
+++ b/drivers/net/ethernet/faraday/ftmac100.c
@@ -31,6 +31,8 @@
 #include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
 
 #include "ftmac100.h"
 
diff --git a/drivers/net/ethernet/intel/i40e/i40e_ptp.c b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
index 101f439..59e7ec6 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_ptp.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
@@ -401,7 +401,7 @@ void i40e_ptp_set_increment(struct i40e_pf *pf)
 	wr32(hw, I40E_PRTTSYN_INC_H, incval >> 32);
 
 	/* Update the base adjustement value. */
-	ACCESS_ONCE(pf->ptp_base_adj) = incval;
+	ACCESS_ONCE_RW(pf->ptp_base_adj) = incval;
 	smp_mb(); /* Force the above update. */
 }
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
index 68f87ec..241dbe3 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
@@ -792,7 +792,7 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
 	}
 
 	/* update the base incval used to calculate frequency adjustment */
-	ACCESS_ONCE(adapter->base_incval) = incval;
+	ACCESS_ONCE_RW(adapter->base_incval) = incval;
 	smp_mb();
 
 	/* need lock to prevent incorrect read while modifying cyclecounter */
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c
index 2bbd01f..e8baa64 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-config.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c
@@ -3457,7 +3457,10 @@ __vxge_hw_fifo_create(struct __vxge_hw_vpath_handle *vp,
 	struct __vxge_hw_fifo *fifo;
 	struct vxge_hw_fifo_config *config;
 	u32 txdl_size, txdl_per_memblock;
-	struct vxge_hw_mempool_cbs fifo_mp_callback;
+	static struct vxge_hw_mempool_cbs fifo_mp_callback = {
+		.item_func_alloc = __vxge_hw_fifo_mempool_item_alloc,
+	};
+
 	struct __vxge_hw_virtualpath *vpath;
 
 	if ((vp == NULL) || (attr == NULL)) {
@@ -3540,8 +3543,6 @@ __vxge_hw_fifo_create(struct __vxge_hw_vpath_handle *vp,
 		goto exit;
 	}
 
-	fifo_mp_callback.item_func_alloc = __vxge_hw_fifo_mempool_item_alloc;
-
 	fifo->mempool =
 		__vxge_hw_mempool_create(vpath->hldev,
 			fifo->config->memblock_size,
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index 73e6683..464e910 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -120,6 +120,10 @@ static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg,
 			       int data);
 static void pch_gbe_set_multi(struct net_device *netdev);
 
+static struct sock_filter ptp_filter[] = {
+	PTP_FILTER
+};
+
 static int pch_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
 {
 	u8 *data = skb->data;
@@ -127,7 +131,7 @@ static int pch_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
 	u16 *hi, *id;
 	u32 lo;
 
-	if (ptp_classify_raw(skb) == PTP_CLASS_NONE)
+	if (sk_run_filter(skb, ptp_filter) == PTP_CLASS_NONE)
 		return 0;
 
 	offset = ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN;
@@ -2631,6 +2635,11 @@ static int pch_gbe_probe(struct pci_dev *pdev,
 
 	adapter->ptp_pdev = pci_get_bus_and_slot(adapter->pdev->bus->number,
 					       PCI_DEVFN(12, 4));
+	if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
+		dev_err(&pdev->dev, "Bad ptp filter\n");
+		ret = -EINVAL;
+		goto err_free_netdev;
+	}
 
 	netdev->netdev_ops = &pch_gbe_netdev_ops;
 	netdev->watchdog_timeo = PCH_GBE_WATCHDOG_PERIOD;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
index f33559b..c7f50ac 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
@@ -2176,7 +2176,9 @@ int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter)
 		max_tx_rings = QLCNIC_MAX_VNIC_TX_RINGS;
 	} else if (ret == QLC_83XX_DEFAULT_OPMODE) {
 		ahw->nic_mode = QLCNIC_DEFAULT_MODE;
-		adapter->nic_ops->init_driver = qlcnic_83xx_init_default_driver;
+		pax_open_kernel();
+		*(void **)&adapter->nic_ops->init_driver = qlcnic_83xx_init_default_driver;
+		pax_close_kernel();
 		ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
 		max_sds_rings = QLCNIC_MAX_SDS_RINGS;
 		max_tx_rings = QLCNIC_MAX_TX_RINGS;
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
index be7d7a6..a8983f8 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
@@ -207,17 +207,23 @@ int qlcnic_83xx_config_vnic_opmode(struct qlcnic_adapter *adapter)
 	case QLCNIC_NON_PRIV_FUNC:
 		ahw->op_mode = QLCNIC_NON_PRIV_FUNC;
 		ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
-		nic_ops->init_driver = qlcnic_83xx_init_non_privileged_vnic;
+		pax_open_kernel();
+		*(void **)&nic_ops->init_driver = qlcnic_83xx_init_non_privileged_vnic;
+		pax_close_kernel();
 		break;
 	case QLCNIC_PRIV_FUNC:
 		ahw->op_mode = QLCNIC_PRIV_FUNC;
 		ahw->idc.state_entry = qlcnic_83xx_idc_vnic_pf_entry;
-		nic_ops->init_driver = qlcnic_83xx_init_privileged_vnic;
+		pax_open_kernel();
+		*(void **)&nic_ops->init_driver = qlcnic_83xx_init_privileged_vnic;
+		pax_close_kernel();
 		break;
 	case QLCNIC_MGMT_FUNC:
 		ahw->op_mode = QLCNIC_MGMT_FUNC;
 		ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
-		nic_ops->init_driver = qlcnic_83xx_init_mgmt_vnic;
+		pax_open_kernel();
+		*(void **)&nic_ops->init_driver = qlcnic_83xx_init_mgmt_vnic;
+		pax_close_kernel();
 		break;
 	default:
 		dev_err(&adapter->pdev->dev, "Invalid Virtual NIC opmode\n");
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
index e46fc39..abe135b 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
@@ -1228,7 +1228,7 @@ flash_temp:
 int qlcnic_dump_fw(struct qlcnic_adapter *adapter)
 {
 	struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
-	static const struct qlcnic_dump_operations *fw_dump_ops;
+	const struct qlcnic_dump_operations *fw_dump_ops;
 	struct qlcnic_83xx_dump_template_hdr *hdr_83xx;
 	u32 entry_offset, dump, no_entries, buf_offset = 0;
 	int i, k, ops_cnt, ops_index, dump_size = 0;
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 61623e9..ac97c27 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -759,22 +759,22 @@ struct rtl8169_private {
 	struct mdio_ops {
 		void (*write)(struct rtl8169_private *, int, int);
 		int (*read)(struct rtl8169_private *, int);
-	} mdio_ops;
+	} __no_const mdio_ops;
 
 	struct pll_power_ops {
 		void (*down)(struct rtl8169_private *);
 		void (*up)(struct rtl8169_private *);
-	} pll_power_ops;
+	} __no_const pll_power_ops;
 
 	struct jumbo_ops {
 		void (*enable)(struct rtl8169_private *);
 		void (*disable)(struct rtl8169_private *);
-	} jumbo_ops;
+	} __no_const jumbo_ops;
 
 	struct csi_ops {
 		void (*write)(struct rtl8169_private *, int, int);
 		u32 (*read)(struct rtl8169_private *, int);
-	} csi_ops;
+	} __no_const csi_ops;
 
 	int (*set_speed)(struct net_device *, u8 aneg, u16 sp, u8 dpx, u32 adv);
 	int (*get_settings)(struct net_device *, struct ethtool_cmd *);
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 6b861e3..204ac86 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -822,7 +822,7 @@ static int efx_ptp_synchronize(struct efx_nic *efx, unsigned int num_readings)
 		       ptp->start.dma_addr);
 
 	/* Clear flag that signals MC ready */
-	ACCESS_ONCE(*start) = 0;
+	ACCESS_ONCE_RW(*start) = 0;
 	rc = efx_mcdi_rpc_start(efx, MC_CMD_PTP, synch_buf,
 				MC_CMD_PTP_IN_SYNCHRONIZE_LEN);
 	EFX_BUG_ON_PARANOID(rc);
diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
index 50617c5..b13724c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
@@ -140,8 +140,8 @@ void dwmac_mmc_ctrl(void __iomem *ioaddr, unsigned int mode)
 
 	writel(value, ioaddr + MMC_CNTRL);
 
-	pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n",
-		 MMC_CNTRL, value);
+//	pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n",
+//		 MMC_CNTRL, value);
 }
 
 /* To mask all all interrupts.*/
diff --git a/drivers/net/ethernet/ti/cpts.c b/drivers/net/ethernet/ti/cpts.c
index 6b56f85..50e285f 100644
--- a/drivers/net/ethernet/ti/cpts.c
+++ b/drivers/net/ethernet/ti/cpts.c
@@ -33,6 +33,10 @@
 
 #ifdef CONFIG_TI_CPTS
 
+static struct sock_filter ptp_filter[] = {
+	PTP_FILTER
+};
+
 #define cpts_read32(c, r)	__raw_readl(&c->reg->r)
 #define cpts_write32(c, v, r)	__raw_writel(v, &c->reg->r)
 
@@ -296,7 +300,7 @@ static u64 cpts_find_ts(struct cpts *cpts, struct sk_buff *skb, int ev_type)
 	u64 ns = 0;
 	struct cpts_event *event;
 	struct list_head *this, *next;
-	unsigned int class = ptp_classify_raw(skb);
+	unsigned int class = sk_run_filter(skb, ptp_filter);
 	unsigned long flags;
 	u16 seqid;
 	u8 mtype;
@@ -367,6 +371,10 @@ int cpts_register(struct device *dev, struct cpts *cpts,
 	int err, i;
 	unsigned long flags;
 
+	if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
+		pr_err("cpts: bad ptp filter\n");
+		return -EINVAL;
+	}
 	cpts->info = cpts_info;
 	cpts->clock = ptp_clock_register(&cpts->info, dev);
 	if (IS_ERR(cpts->clock)) {
diff --git a/drivers/net/ethernet/xscale/Kconfig b/drivers/net/ethernet/xscale/Kconfig
index b81bc9f..3f43101 100644
--- a/drivers/net/ethernet/xscale/Kconfig
+++ b/drivers/net/ethernet/xscale/Kconfig
@@ -23,7 +23,6 @@ config IXP4XX_ETH
 	tristate "Intel IXP4xx Ethernet support"
 	depends on ARM && ARCH_IXP4XX && IXP4XX_NPE && IXP4XX_QMGR
 	select PHYLIB
-	select NET_PTP_CLASSIFY
 	---help---
 	  Say Y here if you want to use built-in Ethernet ports
 	  on IXP4xx processor.
diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c
index f7e0f0f..25283f1 100644
--- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
+++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
@@ -256,6 +256,10 @@ static int ports_open;
 static struct port *npe_port_tab[MAX_NPES];
 static struct dma_pool *dma_pool;
 
+static struct sock_filter ptp_filter[] = {
+	PTP_FILTER
+};
+
 static int ixp_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
 {
 	u8 *data = skb->data;
@@ -263,7 +267,7 @@ static int ixp_ptp_match(struct sk_buff *skb, u16 uid_hi, u32 uid_lo, u16 seqid)
 	u16 *hi, *id;
 	u32 lo;
 
-	if (ptp_classify_raw(skb) != PTP_CLASS_V1_IPV4)
+	if (sk_run_filter(skb, ptp_filter) != PTP_CLASS_V1_IPV4)
 		return 0;
 
 	offset = ETH_HLEN + IPV4_HLEN(data) + UDP_HLEN;
@@ -1409,6 +1413,11 @@ static int eth_init_one(struct platform_device *pdev)
 	char phy_id[MII_BUS_ID_SIZE + 3];
 	int err;
 
+	if (ptp_filter_init(ptp_filter, ARRAY_SIZE(ptp_filter))) {
+		pr_err("ixp4xx_eth: bad ptp filter\n");
+		return -EINVAL;
+	}
+
 	if (!(dev = alloc_etherdev(sizeof(struct port))))
 		return -ENOMEM;
 
diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
index 6cc37c1..fdd9d77 100644
--- a/drivers/net/hyperv/hyperv_net.h
+++ b/drivers/net/hyperv/hyperv_net.h
@@ -170,7 +170,7 @@ struct rndis_device {
 
 	enum rndis_device_state state;
 	bool link_state;
-	atomic_t new_req_id;
+	atomic_unchecked_t new_req_id;
 
 	spinlock_t request_lock;
 	struct list_head req_list;
diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 99c527a..6a2ce38 100644
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -102,7 +102,7 @@ static struct rndis_request *get_rndis_request(struct rndis_device *dev,
 	 * template
 	 */
 	set = &rndis_msg->msg.set_req;
-	set->req_id = atomic_inc_return(&dev->new_req_id);
+	set->req_id = atomic_inc_return_unchecked(&dev->new_req_id);
 
 	/* Add to the request list */
 	spin_lock_irqsave(&dev->request_lock, flags);
@@ -930,7 +930,7 @@ static void rndis_filter_halt_device(struct rndis_device *dev)
 
 	/* Setup the rndis set */
 	halt = &request->request_msg.msg.halt_req;
-	halt->req_id = atomic_inc_return(&dev->new_req_id);
+	halt->req_id = atomic_inc_return_unchecked(&dev->new_req_id);
 
 	/* Ignore return since this msg is optional. */
 	rndis_filter_send_request(dev, request);
diff --git a/drivers/net/ieee802154/fakehard.c b/drivers/net/ieee802154/fakehard.c
index 78f18be..1d19c62 100644
--- a/drivers/net/ieee802154/fakehard.c
+++ b/drivers/net/ieee802154/fakehard.c
@@ -364,7 +364,7 @@ static int ieee802154fake_probe(struct platform_device *pdev)
 	phy->transmit_power = 0xbf;
 
 	dev->netdev_ops = &fake_ops;
-	dev->ml_priv = &fake_mlme;
+	dev->ml_priv = (void *)&fake_mlme;
 
 	priv = netdev_priv(dev);
 	priv->phy = phy;
diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
index ef8a5c2..76877d6 100644
--- a/drivers/net/macvlan.c
+++ b/drivers/net/macvlan.c
@@ -264,7 +264,7 @@ static void macvlan_broadcast_enqueue(struct macvlan_port *port,
 free_nskb:
 	kfree_skb(nskb);
 err:
-	atomic_long_inc(&skb->dev->rx_dropped);
+	atomic_long_inc_unchecked(&skb->dev->rx_dropped);
 }
 
 /* called under rcu_read_lock() from netif_receive_skb */
@@ -1134,13 +1134,15 @@ static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = {
 int macvlan_link_register(struct rtnl_link_ops *ops)
 {
 	/* common fields */
-	ops->priv_size		= sizeof(struct macvlan_dev);
-	ops->validate		= macvlan_validate;
-	ops->maxtype		= IFLA_MACVLAN_MAX;
-	ops->policy		= macvlan_policy;
-	ops->changelink		= macvlan_changelink;
-	ops->get_size		= macvlan_get_size;
-	ops->fill_info		= macvlan_fill_info;
+	pax_open_kernel();
+	*(size_t *)&ops->priv_size	= sizeof(struct macvlan_dev);
+	*(void **)&ops->validate	= macvlan_validate;
+	*(int *)&ops->maxtype		= IFLA_MACVLAN_MAX;
+	*(const void **)&ops->policy	= macvlan_policy;
+	*(void **)&ops->changelink	= macvlan_changelink;
+	*(void **)&ops->get_size	= macvlan_get_size;
+	*(void **)&ops->fill_info	= macvlan_fill_info;
+	pax_close_kernel();
 
 	return rtnl_link_register(ops);
 };
@@ -1220,7 +1222,7 @@ static int macvlan_device_event(struct notifier_block *unused,
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block macvlan_notifier_block __read_mostly = {
+static struct notifier_block macvlan_notifier_block = {
 	.notifier_call	= macvlan_device_event,
 };
 
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
index 3381c4f..dea5fd5 100644
--- a/drivers/net/macvtap.c
+++ b/drivers/net/macvtap.c
@@ -1020,7 +1020,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
 		}
 
 		ret = 0;
-		if (copy_to_user(&ifr->ifr_name, vlan->dev->name, IFNAMSIZ) ||
+		if (copy_to_user(ifr->ifr_name, vlan->dev->name, IFNAMSIZ) ||
 		    put_user(q->flags, &ifr->ifr_flags))
 			ret = -EFAULT;
 		macvtap_put_vlan(vlan);
@@ -1190,7 +1190,7 @@ static int macvtap_device_event(struct notifier_block *unused,
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block macvtap_notifier_block __read_mostly = {
+static struct notifier_block macvtap_notifier_block = {
 	.notifier_call	= macvtap_device_event,
 };
 
diff --git a/drivers/net/phy/dp83640.c b/drivers/net/phy/dp83640.c
index 9408157..d53b924 100644
--- a/drivers/net/phy/dp83640.c
+++ b/drivers/net/phy/dp83640.c
@@ -27,7 +27,6 @@
 #include <linux/module.h>
 #include <linux/net_tstamp.h>
 #include <linux/netdevice.h>
-#include <linux/if_vlan.h>
 #include <linux/phy.h>
 #include <linux/ptp_classify.h>
 #include <linux/ptp_clock_kernel.h>
diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
index d5b77ef..72ff14b 100644
--- a/drivers/net/ppp/ppp_generic.c
+++ b/drivers/net/ppp/ppp_generic.c
@@ -143,8 +143,9 @@ struct ppp {
 	struct sk_buff_head mrq;	/* MP: receive reconstruction queue */
 #endif /* CONFIG_PPP_MULTILINK */
 #ifdef CONFIG_PPP_FILTER
-	struct sk_filter *pass_filter;	/* filter for packets to pass */
-	struct sk_filter *active_filter;/* filter for pkts to reset idle */
+	struct sock_filter *pass_filter;	/* filter for packets to pass */
+	struct sock_filter *active_filter;/* filter for pkts to reset idle */
+	unsigned pass_len, active_len;
 #endif /* CONFIG_PPP_FILTER */
 	struct net	*ppp_net;	/* the net we belong to */
 	struct ppp_link_stats stats64;	/* 64 bit network stats */
@@ -539,7 +540,7 @@ static int get_filter(void __user *arg, struct sock_filter **p)
 {
 	struct sock_fprog uprog;
 	struct sock_filter *code = NULL;
-	int len;
+	int len, err;
 
 	if (copy_from_user(&uprog, arg, sizeof(uprog)))
 		return -EFAULT;
@@ -554,6 +555,12 @@ static int get_filter(void __user *arg, struct sock_filter **p)
 	if (IS_ERR(code))
 		return PTR_ERR(code);
 
+	err = sk_chk_filter(code, uprog.len);
+	if (err) {
+		kfree(code);
+		return err;
+	}
+
 	*p = code;
 	return uprog.len;
 }
@@ -748,52 +755,28 @@ static long ppp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	case PPPIOCSPASS:
 	{
 		struct sock_filter *code;
-
 		err = get_filter(argp, &code);
 		if (err >= 0) {
-			struct sock_fprog_kern fprog = {
-				.len = err,
-				.filter = code,
-			};
-
 			ppp_lock(ppp);
-			if (ppp->pass_filter) {
-				sk_unattached_filter_destroy(ppp->pass_filter);
-				ppp->pass_filter = NULL;
-			}
-			if (fprog.filter != NULL)
-				err = sk_unattached_filter_create(&ppp->pass_filter,
-								  &fprog);
-			else
-				err = 0;
-			kfree(code);
+			kfree(ppp->pass_filter);
+			ppp->pass_filter = code;
+			ppp->pass_len = err;
 			ppp_unlock(ppp);
+			err = 0;
 		}
 		break;
 	}
 	case PPPIOCSACTIVE:
 	{
 		struct sock_filter *code;
-
 		err = get_filter(argp, &code);
 		if (err >= 0) {
-			struct sock_fprog_kern fprog = {
-				.len = err,
-				.filter = code,
-			};
-
 			ppp_lock(ppp);
-			if (ppp->active_filter) {
-				sk_unattached_filter_destroy(ppp->active_filter);
-				ppp->active_filter = NULL;
-			}
-			if (fprog.filter != NULL)
-				err = sk_unattached_filter_create(&ppp->active_filter,
-								  &fprog);
-			else
-				err = 0;
-			kfree(code);
+			kfree(ppp->active_filter);
+			ppp->active_filter = code;
+			ppp->active_len = err;
 			ppp_unlock(ppp);
+			err = 0;
 		}
 		break;
 	}
@@ -1201,7 +1184,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
 		   a four-byte PPP header on each packet */
 		*skb_push(skb, 2) = 1;
 		if (ppp->pass_filter &&
-		    SK_RUN_FILTER(ppp->pass_filter, skb) == 0) {
+		    sk_run_filter(skb, ppp->pass_filter) == 0) {
 			if (ppp->debug & 1)
 				netdev_printk(KERN_DEBUG, ppp->dev,
 					      "PPP: outbound frame "
@@ -1211,7 +1194,7 @@ ppp_send_frame(struct ppp *ppp, struct sk_buff *skb)
 		}
 		/* if this packet passes the active filter, record the time */
 		if (!(ppp->active_filter &&
-		      SK_RUN_FILTER(ppp->active_filter, skb) == 0))
+		      sk_run_filter(skb, ppp->active_filter) == 0))
 			ppp->last_xmit = jiffies;
 		skb_pull(skb, 2);
 #else
@@ -1835,7 +1818,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
 
 			*skb_push(skb, 2) = 0;
 			if (ppp->pass_filter &&
-			    SK_RUN_FILTER(ppp->pass_filter, skb) == 0) {
+			    sk_run_filter(skb, ppp->pass_filter) == 0) {
 				if (ppp->debug & 1)
 					netdev_printk(KERN_DEBUG, ppp->dev,
 						      "PPP: inbound frame "
@@ -1844,7 +1827,7 @@ ppp_receive_nonmp_frame(struct ppp *ppp, struct sk_buff *skb)
 				return;
 			}
 			if (!(ppp->active_filter &&
-			      SK_RUN_FILTER(ppp->active_filter, skb) == 0))
+			      sk_run_filter(skb, ppp->active_filter) == 0))
 				ppp->last_recv = jiffies;
 			__skb_pull(skb, 2);
 		} else
@@ -2689,10 +2672,6 @@ ppp_create_interface(struct net *net, int unit, int *retp)
 	ppp->minseq = -1;
 	skb_queue_head_init(&ppp->mrq);
 #endif /* CONFIG_PPP_MULTILINK */
-#ifdef CONFIG_PPP_FILTER
-	ppp->pass_filter = NULL;
-	ppp->active_filter = NULL;
-#endif /* CONFIG_PPP_FILTER */
 
 	/*
 	 * drum roll: don't forget to set
@@ -2823,15 +2802,10 @@ static void ppp_destroy_interface(struct ppp *ppp)
 	skb_queue_purge(&ppp->mrq);
 #endif /* CONFIG_PPP_MULTILINK */
 #ifdef CONFIG_PPP_FILTER
-	if (ppp->pass_filter) {
-		sk_unattached_filter_destroy(ppp->pass_filter);
-		ppp->pass_filter = NULL;
-	}
-
-	if (ppp->active_filter) {
-		sk_unattached_filter_destroy(ppp->active_filter);
-		ppp->active_filter = NULL;
-	}
+	kfree(ppp->pass_filter);
+	ppp->pass_filter = NULL;
+	kfree(ppp->active_filter);
+	ppp->active_filter = NULL;
 #endif /* CONFIG_PPP_FILTER */
 
 	kfree_skb(ppp->xmit_pending);
diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
index 1252d9c..80e660b 100644
--- a/drivers/net/slip/slhc.c
+++ b/drivers/net/slip/slhc.c
@@ -488,7 +488,7 @@ slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize)
 	register struct tcphdr *thp;
 	register struct iphdr *ip;
 	register struct cstate *cs;
-	int len, hdrlen;
+	long len, hdrlen;
 	unsigned char *cp = icp;
 
 	/* We've got a compressed packet; read the change byte */
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index b4958c7..277cb96 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -2868,7 +2868,7 @@ static int team_device_event(struct notifier_block *unused,
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block team_notifier_block __read_mostly = {
+static struct notifier_block team_notifier_block = {
 	.notifier_call = team_device_event,
 };
 
diff --git a/drivers/net/team/team_mode_loadbalance.c b/drivers/net/team/team_mode_loadbalance.c
index a58dfeb..dbde341 100644
--- a/drivers/net/team/team_mode_loadbalance.c
+++ b/drivers/net/team/team_mode_loadbalance.c
@@ -49,7 +49,7 @@ struct lb_port_mapping {
 struct lb_priv_ex {
 	struct team *team;
 	struct lb_port_mapping tx_hash_to_port_mapping[LB_TX_HASHTABLE_SIZE];
-	struct sock_fprog_kern *orig_fprog;
+	struct sock_fprog *orig_fprog;
 	struct {
 		unsigned int refresh_interval; /* in tenths of second */
 		struct delayed_work refresh_dw;
@@ -241,15 +241,15 @@ static int lb_bpf_func_get(struct team *team, struct team_gsetter_ctx *ctx)
 	return 0;
 }
 
-static int __fprog_create(struct sock_fprog_kern **pfprog, u32 data_len,
+static int __fprog_create(struct sock_fprog **pfprog, u32 data_len,
 			  const void *data)
 {
-	struct sock_fprog_kern *fprog;
+	struct sock_fprog *fprog;
 	struct sock_filter *filter = (struct sock_filter *) data;
 
 	if (data_len % sizeof(struct sock_filter))
 		return -EINVAL;
-	fprog = kmalloc(sizeof(*fprog), GFP_KERNEL);
+	fprog = kmalloc(sizeof(struct sock_fprog), GFP_KERNEL);
 	if (!fprog)
 		return -ENOMEM;
 	fprog->filter = kmemdup(filter, data_len, GFP_KERNEL);
@@ -262,7 +262,7 @@ static int __fprog_create(struct sock_fprog_kern **pfprog, u32 data_len,
 	return 0;
 }
 
-static void __fprog_destroy(struct sock_fprog_kern *fprog)
+static void __fprog_destroy(struct sock_fprog *fprog)
 {
 	kfree(fprog->filter);
 	kfree(fprog);
@@ -273,7 +273,7 @@ static int lb_bpf_func_set(struct team *team, struct team_gsetter_ctx *ctx)
 	struct lb_priv *lb_priv = get_lb_priv(team);
 	struct sk_filter *fp = NULL;
 	struct sk_filter *orig_fp;
-	struct sock_fprog_kern *fprog = NULL;
+	struct sock_fprog *fprog = NULL;
 	int err;
 
 	if (ctx->data.bin_val.len) {
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 98bad1f..f197d7a 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1854,7 +1854,7 @@ unlock:
 }
 
 static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
-			    unsigned long arg, int ifreq_len)
+			    unsigned long arg, size_t ifreq_len)
 {
 	struct tun_file *tfile = file->private_data;
 	struct tun_struct *tun;
@@ -1867,6 +1867,9 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
 	unsigned int ifindex;
 	int ret;
 
+	if (ifreq_len > sizeof ifr)
+		return -EFAULT;
+
 	if (cmd == TUNSETIFF || cmd == TUNSETQUEUE || _IOC_TYPE(cmd) == 0x89) {
 		if (copy_from_user(&ifr, argp, ifreq_len))
 			return -EFAULT;
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index a4272ed..cdd69ff 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -71,7 +71,7 @@
 #include <asm/byteorder.h>
 #include <linux/serial_core.h>
 #include <linux/serial.h>
-
+#include <asm/local.h>
 
 #define MOD_AUTHOR			"Option Wireless"
 #define MOD_DESCRIPTION			"USB High Speed Option driver"
@@ -1177,7 +1177,7 @@ static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
 	struct urb *urb;
 
 	urb = serial->rx_urb[0];
-	if (serial->port.count > 0) {
+	if (atomic_read(&serial->port.count) > 0) {
 		count = put_rxbuf_data(urb, serial);
 		if (count == -1)
 			return;
@@ -1215,7 +1215,7 @@ static void hso_std_serial_read_bulk_callback(struct urb *urb)
 	DUMP1(urb->transfer_buffer, urb->actual_length);
 
 	/* Anyone listening? */
-	if (serial->port.count == 0)
+	if (atomic_read(&serial->port.count) == 0)
 		return;
 
 	if (serial->parent->port_spec & HSO_INFO_CRC_BUG)
@@ -1277,8 +1277,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp)
 	tty_port_tty_set(&serial->port, tty);
 
 	/* check for port already opened, if not set the termios */
-	serial->port.count++;
-	if (serial->port.count == 1) {
+	if (atomic_inc_return(&serial->port.count) == 1) {
 		serial->rx_state = RX_IDLE;
 		/* Force default termio settings */
 		_hso_serial_set_termios(tty, NULL);
@@ -1288,7 +1287,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp)
 		result = hso_start_serial_device(serial->parent, GFP_KERNEL);
 		if (result) {
 			hso_stop_serial_device(serial->parent);
-			serial->port.count--;
+			atomic_dec(&serial->port.count);
 			kref_put(&serial->parent->ref, hso_serial_ref_free);
 		}
 	} else {
@@ -1325,10 +1324,10 @@ static void hso_serial_close(struct tty_struct *tty, struct file *filp)
 
 	/* reset the rts and dtr */
 	/* do the actual close */
-	serial->port.count--;
+	atomic_dec(&serial->port.count);
 
-	if (serial->port.count <= 0) {
-		serial->port.count = 0;
+	if (atomic_read(&serial->port.count) <= 0) {
+		atomic_set(&serial->port.count, 0);
 		tty_port_tty_set(&serial->port, NULL);
 		if (!usb_gone)
 			hso_stop_serial_device(serial->parent);
@@ -1403,7 +1402,7 @@ static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
 
 	/* the actual setup */
 	spin_lock_irqsave(&serial->serial_lock, flags);
-	if (serial->port.count)
+	if (atomic_read(&serial->port.count))
 		_hso_serial_set_termios(tty, old);
 	else
 		tty->termios = *old;
@@ -1872,7 +1871,7 @@ static void intr_callback(struct urb *urb)
 				D1("Pending read interrupt on port %d\n", i);
 				spin_lock(&serial->serial_lock);
 				if (serial->rx_state == RX_IDLE &&
-					serial->port.count > 0) {
+					atomic_read(&serial->port.count) > 0) {
 					/* Setup and send a ctrl req read on
 					 * port i */
 					if (!serial->rx_urb_filled[0]) {
@@ -3045,7 +3044,7 @@ static int hso_resume(struct usb_interface *iface)
 	/* Start all serial ports */
 	for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
 		if (serial_table[i] && (serial_table[i]->interface == iface)) {
-			if (dev2ser(serial_table[i])->port.count) {
+			if (atomic_read(&dev2ser(serial_table[i])->port.count)) {
 				result =
 				    hso_start_serial_device(serial_table[i], GFP_NOIO);
 				hso_kick_transmit(dev2ser(serial_table[i]));
diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 3eab74c..fb6097c 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -567,7 +567,7 @@ struct r8152 {
 		void (*up)(struct r8152 *);
 		void (*down)(struct r8152 *);
 		void (*unload)(struct r8152 *);
-	} rtl_ops;
+	} __no_const rtl_ops;
 
 	int intr_interval;
 	u32 saved_wolopts;
diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
index a2515887..6d13233 100644
--- a/drivers/net/usb/sierra_net.c
+++ b/drivers/net/usb/sierra_net.c
@@ -51,7 +51,7 @@ static const char driver_name[] = "sierra_net";
 /* atomic counter partially included in MAC address to make sure 2 devices
  * do not end up with the same MAC - concept breaks in case of > 255 ifaces
  */
-static	atomic_t iface_counter = ATOMIC_INIT(0);
+static	atomic_unchecked_t iface_counter = ATOMIC_INIT(0);
 
 /*
  * SYNC Timer Delay definition used to set the expiry time
@@ -697,7 +697,7 @@ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
 	dev->net->netdev_ops = &sierra_net_device_ops;
 
 	/* change MAC addr to include, ifacenum, and to be unique */
-	dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
+	dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return_unchecked(&iface_counter);
 	dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
 
 	/* we will have to manufacture ethernet headers, prepare template */
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 7d9f84a..7f690da 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -47,7 +47,7 @@ module_param(gso, bool, 0444);
 #define RECEIVE_AVG_WEIGHT 64
 
 /* Minimum alignment for mergeable packet buffers. */
-#define MERGEABLE_BUFFER_ALIGN max(L1_CACHE_BYTES, 256)
+#define MERGEABLE_BUFFER_ALIGN max(L1_CACHE_BYTES, 256UL)
 
 #define VIRTNET_DRIVER_VERSION "1.0.0"
 
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 9f79192..838cf95 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -2838,7 +2838,7 @@ nla_put_failure:
 	return -EMSGSIZE;
 }
 
-static struct rtnl_link_ops vxlan_link_ops __read_mostly = {
+static struct rtnl_link_ops vxlan_link_ops = {
 	.kind		= "vxlan",
 	.maxtype	= IFLA_VXLAN_MAX,
 	.policy		= vxlan_policy,
@@ -2885,7 +2885,7 @@ static int vxlan_lowerdev_event(struct notifier_block *unused,
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block vxlan_notifier_block __read_mostly = {
+static struct notifier_block vxlan_notifier_block = {
 	.notifier_call = vxlan_lowerdev_event,
 };
 
diff --git a/drivers/net/wan/lmc/lmc_media.c b/drivers/net/wan/lmc/lmc_media.c
index 5920c99..ff2e4a5 100644
--- a/drivers/net/wan/lmc/lmc_media.c
+++ b/drivers/net/wan/lmc/lmc_media.c
@@ -95,62 +95,63 @@ static inline void write_av9110_bit (lmc_softc_t *, int);
 static void write_av9110(lmc_softc_t *, u32, u32, u32, u32, u32);
 
 lmc_media_t lmc_ds3_media = {
-  lmc_ds3_init,			/* special media init stuff */
-  lmc_ds3_default,		/* reset to default state */
-  lmc_ds3_set_status,		/* reset status to state provided */
-  lmc_dummy_set_1,		/* set clock source */
-  lmc_dummy_set2_1,		/* set line speed */
-  lmc_ds3_set_100ft,		/* set cable length */
-  lmc_ds3_set_scram,		/* set scrambler */
-  lmc_ds3_get_link_status,	/* get link status */
-  lmc_dummy_set_1,		/* set link status */
-  lmc_ds3_set_crc_length,	/* set CRC length */
-  lmc_dummy_set_1,		/* set T1 or E1 circuit type */
-  lmc_ds3_watchdog
+  .init = lmc_ds3_init,				/* special media init stuff */
+  .defaults = lmc_ds3_default,			/* reset to default state */
+  .set_status = lmc_ds3_set_status,		/* reset status to state provided */
+  .set_clock_source = lmc_dummy_set_1,		/* set clock source */
+  .set_speed = lmc_dummy_set2_1,		/* set line speed */
+  .set_cable_length = lmc_ds3_set_100ft,	/* set cable length */
+  .set_scrambler = lmc_ds3_set_scram,		/* set scrambler */
+  .get_link_status = lmc_ds3_get_link_status,	/* get link status */
+  .set_link_status = lmc_dummy_set_1,		/* set link status */
+  .set_crc_length = lmc_ds3_set_crc_length,	/* set CRC length */
+  .set_circuit_type = lmc_dummy_set_1,		/* set T1 or E1 circuit type */
+  .watchdog = lmc_ds3_watchdog
 };
 
 lmc_media_t lmc_hssi_media = {
-  lmc_hssi_init,		/* special media init stuff */
-  lmc_hssi_default,		/* reset to default state */
-  lmc_hssi_set_status,		/* reset status to state provided */
-  lmc_hssi_set_clock,		/* set clock source */
-  lmc_dummy_set2_1,		/* set line speed */
-  lmc_dummy_set_1,		/* set cable length */
-  lmc_dummy_set_1,		/* set scrambler */
-  lmc_hssi_get_link_status,	/* get link status */
-  lmc_hssi_set_link_status,	/* set link status */
-  lmc_hssi_set_crc_length,	/* set CRC length */
-  lmc_dummy_set_1,		/* set T1 or E1 circuit type */
-  lmc_hssi_watchdog
+  .init = lmc_hssi_init,			/* special media init stuff */
+  .defaults = lmc_hssi_default,			/* reset to default state */
+  .set_status = lmc_hssi_set_status,		/* reset status to state provided */
+  .set_clock_source = lmc_hssi_set_clock,	/* set clock source */
+  .set_speed = lmc_dummy_set2_1,		/* set line speed */
+  .set_cable_length = lmc_dummy_set_1,		/* set cable length */
+  .set_scrambler = lmc_dummy_set_1,		/* set scrambler */
+  .get_link_status = lmc_hssi_get_link_status,	/* get link status */
+  .set_link_status = lmc_hssi_set_link_status,	/* set link status */
+  .set_crc_length = lmc_hssi_set_crc_length,	/* set CRC length */
+  .set_circuit_type = lmc_dummy_set_1,		/* set T1 or E1 circuit type */
+  .watchdog = lmc_hssi_watchdog
 };
 
-lmc_media_t lmc_ssi_media = { lmc_ssi_init,	/* special media init stuff */
-  lmc_ssi_default,		/* reset to default state */
-  lmc_ssi_set_status,		/* reset status to state provided */
-  lmc_ssi_set_clock,		/* set clock source */
-  lmc_ssi_set_speed,		/* set line speed */
-  lmc_dummy_set_1,		/* set cable length */
-  lmc_dummy_set_1,		/* set scrambler */
-  lmc_ssi_get_link_status,	/* get link status */
-  lmc_ssi_set_link_status,	/* set link status */
-  lmc_ssi_set_crc_length,	/* set CRC length */
-  lmc_dummy_set_1,		/* set T1 or E1 circuit type */
-  lmc_ssi_watchdog
+lmc_media_t lmc_ssi_media = {
+  .init = lmc_ssi_init,				/* special media init stuff */
+  .defaults = lmc_ssi_default,			/* reset to default state */
+  .set_status = lmc_ssi_set_status,		/* reset status to state provided */
+  .set_clock_source = lmc_ssi_set_clock,	/* set clock source */
+  .set_speed = lmc_ssi_set_speed,		/* set line speed */
+  .set_cable_length = lmc_dummy_set_1,		/* set cable length */
+  .set_scrambler = lmc_dummy_set_1,		/* set scrambler */
+  .get_link_status = lmc_ssi_get_link_status,	/* get link status */
+  .set_link_status = lmc_ssi_set_link_status,	/* set link status */
+  .set_crc_length = lmc_ssi_set_crc_length,	/* set CRC length */
+  .set_circuit_type = lmc_dummy_set_1,		/* set T1 or E1 circuit type */
+  .watchdog = lmc_ssi_watchdog
 };
 
 lmc_media_t lmc_t1_media = {
-  lmc_t1_init,			/* special media init stuff */
-  lmc_t1_default,		/* reset to default state */
-  lmc_t1_set_status,		/* reset status to state provided */
-  lmc_t1_set_clock,		/* set clock source */
-  lmc_dummy_set2_1,		/* set line speed */
-  lmc_dummy_set_1,		/* set cable length */
-  lmc_dummy_set_1,		/* set scrambler */
-  lmc_t1_get_link_status,	/* get link status */
-  lmc_dummy_set_1,		/* set link status */
-  lmc_t1_set_crc_length,	/* set CRC length */
-  lmc_t1_set_circuit_type,	/* set T1 or E1 circuit type */
-  lmc_t1_watchdog
+  .init = lmc_t1_init,				/* special media init stuff */
+  .defaults = lmc_t1_default,			/* reset to default state */
+  .set_status = lmc_t1_set_status,		/* reset status to state provided */
+  .set_clock_source = lmc_t1_set_clock,		/* set clock source */
+  .set_speed = lmc_dummy_set2_1,		/* set line speed */
+  .set_cable_length = lmc_dummy_set_1,		/* set cable length */
+  .set_scrambler = lmc_dummy_set_1,		/* set scrambler */
+  .get_link_status = lmc_t1_get_link_status,	/* get link status */
+  .set_link_status = lmc_dummy_set_1,		/* set link status */
+  .set_crc_length = lmc_t1_set_crc_length,	/* set CRC length */
+  .set_circuit_type = lmc_t1_set_circuit_type,	/* set T1 or E1 circuit type */
+  .watchdog = lmc_t1_watchdog
 };
 
 static void
diff --git a/drivers/net/wan/z85230.c b/drivers/net/wan/z85230.c
index feacc3b..5bac0de 100644
--- a/drivers/net/wan/z85230.c
+++ b/drivers/net/wan/z85230.c
@@ -485,9 +485,9 @@ static void z8530_status(struct z8530_channel *chan)
 
 struct z8530_irqhandler z8530_sync =
 {
-	z8530_rx,
-	z8530_tx,
-	z8530_status
+	.rx = z8530_rx,
+	.tx = z8530_tx,
+	.status = z8530_status
 };
 
 EXPORT_SYMBOL(z8530_sync);
@@ -605,15 +605,15 @@ static void z8530_dma_status(struct z8530_channel *chan)
 }
 
 static struct z8530_irqhandler z8530_dma_sync = {
-	z8530_dma_rx,
-	z8530_dma_tx,
-	z8530_dma_status
+	.rx = z8530_dma_rx,
+	.tx = z8530_dma_tx,
+	.status = z8530_dma_status
 };
 
 static struct z8530_irqhandler z8530_txdma_sync = {
-	z8530_rx,
-	z8530_dma_tx,
-	z8530_dma_status
+	.rx = z8530_rx,
+	.tx = z8530_dma_tx,
+	.status = z8530_dma_status
 };
 
 /**
@@ -680,9 +680,9 @@ static void z8530_status_clear(struct z8530_channel *chan)
 
 struct z8530_irqhandler z8530_nop=
 {
-	z8530_rx_clear,
-	z8530_tx_clear,
-	z8530_status_clear
+	.rx = z8530_rx_clear,
+	.tx = z8530_tx_clear,
+	.status = z8530_status_clear
 };
 
 
diff --git a/drivers/net/wimax/i2400m/rx.c b/drivers/net/wimax/i2400m/rx.c
index 0b60295..b8bfa5b 100644
--- a/drivers/net/wimax/i2400m/rx.c
+++ b/drivers/net/wimax/i2400m/rx.c
@@ -1359,7 +1359,7 @@ int i2400m_rx_setup(struct i2400m *i2400m)
 		if (i2400m->rx_roq == NULL)
 			goto error_roq_alloc;
 
-		rd = kcalloc(I2400M_RO_CIN + 1, sizeof(*i2400m->rx_roq[0].log),
+		rd = kcalloc(sizeof(*i2400m->rx_roq[0].log), I2400M_RO_CIN + 1,
 			     GFP_KERNEL);
 		if (rd == NULL) {
 			result = -ENOMEM;
diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
index 64747d4..17c4cf3 100644
--- a/drivers/net/wireless/airo.c
+++ b/drivers/net/wireless/airo.c
@@ -7846,7 +7846,7 @@ static int writerids(struct net_device *dev, aironet_ioctl *comp) {
 	struct airo_info *ai = dev->ml_priv;
 	int  ridcode;
         int  enabled;
-	static int (* writer)(struct airo_info *, u16 rid, const void *, int, int);
+	int (* writer)(struct airo_info *, u16 rid, const void *, int, int);
 	unsigned char *iobuf;
 
 	/* Only super-user can write RIDs */
diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
index d48776e..373d049 100644
--- a/drivers/net/wireless/at76c50x-usb.c
+++ b/drivers/net/wireless/at76c50x-usb.c
@@ -353,7 +353,7 @@ static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
 }
 
 /* Convert timeout from the DFU status to jiffies */
-static inline unsigned long at76_get_timeout(struct dfu_status *s)
+static inline unsigned long __intentional_overflow(-1) at76_get_timeout(struct dfu_status *s)
 {
 	return msecs_to_jiffies((s->poll_timeout[2] << 16)
 				| (s->poll_timeout[1] << 8)
diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
index e493db4..2c1853a 100644
--- a/drivers/net/wireless/ath/ath10k/htc.c
+++ b/drivers/net/wireless/ath/ath10k/htc.c
@@ -840,7 +840,10 @@ void ath10k_htc_stop(struct ath10k_htc *htc)
 /* registered target arrival callback from the HIF layer */
 int ath10k_htc_init(struct ath10k *ar)
 {
-	struct ath10k_hif_cb htc_callbacks;
+	static struct ath10k_hif_cb htc_callbacks = {
+		.rx_completion = ath10k_htc_rx_completion_handler,
+		.tx_completion = ath10k_htc_tx_completion_handler,
+	};
 	struct ath10k_htc_ep *ep = NULL;
 	struct ath10k_htc *htc = &ar->htc;
 
@@ -850,8 +853,6 @@ int ath10k_htc_init(struct ath10k *ar)
 	ath10k_htc_reset_endpoint_states(htc);
 
 	/* setup HIF layer callbacks */
-	htc_callbacks.rx_completion = ath10k_htc_rx_completion_handler;
-	htc_callbacks.tx_completion = ath10k_htc_tx_completion_handler;
 	htc->ar = ar;
 
 	/* Get HIF default pipe for HTC message exchange */
diff --git a/drivers/net/wireless/ath/ath10k/htc.h b/drivers/net/wireless/ath/ath10k/htc.h
index 4716d33..a688310 100644
--- a/drivers/net/wireless/ath/ath10k/htc.h
+++ b/drivers/net/wireless/ath/ath10k/htc.h
@@ -271,13 +271,13 @@ enum ath10k_htc_ep_id {
 
 struct ath10k_htc_ops {
 	void (*target_send_suspend_complete)(struct ath10k *ar);
-};
+} __no_const;
 
 struct ath10k_htc_ep_ops {
 	void (*ep_tx_complete)(struct ath10k *, struct sk_buff *);
 	void (*ep_rx_complete)(struct ath10k *, struct sk_buff *);
 	void (*ep_tx_credits)(struct ath10k *);
-};
+} __no_const;
 
 /* service connection information */
 struct ath10k_htc_svc_conn_req {
diff --git a/drivers/net/wireless/ath/ath9k/ar9002_mac.c b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
index 741b38d..b7ae41b 100644
--- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
@@ -220,8 +220,8 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 	ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
 	ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
 
-	ACCESS_ONCE(ads->ds_link) = i->link;
-	ACCESS_ONCE(ads->ds_data) = i->buf_addr[0];
+	ACCESS_ONCE_RW(ads->ds_link) = i->link;
+	ACCESS_ONCE_RW(ads->ds_data) = i->buf_addr[0];
 
 	ctl1 = i->buf_len[0] | (i->is_last ? 0 : AR_TxMore);
 	ctl6 = SM(i->keytype, AR_EncrType);
@@ -235,26 +235,26 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 
 	if ((i->is_first || i->is_last) &&
 	    i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) {
-		ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0)
+		ACCESS_ONCE_RW(ads->ds_ctl2) = set11nTries(i->rates, 0)
 			| set11nTries(i->rates, 1)
 			| set11nTries(i->rates, 2)
 			| set11nTries(i->rates, 3)
 			| (i->dur_update ? AR_DurUpdateEna : 0)
 			| SM(0, AR_BurstDur);
 
-		ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0)
+		ACCESS_ONCE_RW(ads->ds_ctl3) = set11nRate(i->rates, 0)
 			| set11nRate(i->rates, 1)
 			| set11nRate(i->rates, 2)
 			| set11nRate(i->rates, 3);
 	} else {
-		ACCESS_ONCE(ads->ds_ctl2) = 0;
-		ACCESS_ONCE(ads->ds_ctl3) = 0;
+		ACCESS_ONCE_RW(ads->ds_ctl2) = 0;
+		ACCESS_ONCE_RW(ads->ds_ctl3) = 0;
 	}
 
 	if (!i->is_first) {
-		ACCESS_ONCE(ads->ds_ctl0) = 0;
-		ACCESS_ONCE(ads->ds_ctl1) = ctl1;
-		ACCESS_ONCE(ads->ds_ctl6) = ctl6;
+		ACCESS_ONCE_RW(ads->ds_ctl0) = 0;
+		ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1;
+		ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6;
 		return;
 	}
 
@@ -279,7 +279,7 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 		break;
 	}
 
-	ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen)
+	ACCESS_ONCE_RW(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen)
 		| (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
 		| SM(i->txpower, AR_XmitPower)
 		| (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
@@ -289,19 +289,19 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 		| (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable :
 		   (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0));
 
-	ACCESS_ONCE(ads->ds_ctl1) = ctl1;
-	ACCESS_ONCE(ads->ds_ctl6) = ctl6;
+	ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1;
+	ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6;
 
 	if (i->aggr == AGGR_BUF_MIDDLE || i->aggr == AGGR_BUF_LAST)
 		return;
 
-	ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0)
+	ACCESS_ONCE_RW(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0)
 		| set11nPktDurRTSCTS(i->rates, 1);
 
-	ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2)
+	ACCESS_ONCE_RW(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2)
 		| set11nPktDurRTSCTS(i->rates, 3);
 
-	ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0)
+	ACCESS_ONCE_RW(ads->ds_ctl7) = set11nRateFlags(i->rates, 0)
 		| set11nRateFlags(i->rates, 1)
 		| set11nRateFlags(i->rates, 2)
 		| set11nRateFlags(i->rates, 3)
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index 729ffbf..49f50e3 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -39,47 +39,47 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 	      (i->qcu << AR_TxQcuNum_S) | desc_len;
 
 	checksum += val;
-	ACCESS_ONCE(ads->info) = val;
+	ACCESS_ONCE_RW(ads->info) = val;
 
 	checksum += i->link;
-	ACCESS_ONCE(ads->link) = i->link;
+	ACCESS_ONCE_RW(ads->link) = i->link;
 
 	checksum += i->buf_addr[0];
-	ACCESS_ONCE(ads->data0) = i->buf_addr[0];
+	ACCESS_ONCE_RW(ads->data0) = i->buf_addr[0];
 	checksum += i->buf_addr[1];
-	ACCESS_ONCE(ads->data1) = i->buf_addr[1];
+	ACCESS_ONCE_RW(ads->data1) = i->buf_addr[1];
 	checksum += i->buf_addr[2];
-	ACCESS_ONCE(ads->data2) = i->buf_addr[2];
+	ACCESS_ONCE_RW(ads->data2) = i->buf_addr[2];
 	checksum += i->buf_addr[3];
-	ACCESS_ONCE(ads->data3) = i->buf_addr[3];
+	ACCESS_ONCE_RW(ads->data3) = i->buf_addr[3];
 
 	checksum += (val = (i->buf_len[0] << AR_BufLen_S) & AR_BufLen);
-	ACCESS_ONCE(ads->ctl3) = val;
+	ACCESS_ONCE_RW(ads->ctl3) = val;
 	checksum += (val = (i->buf_len[1] << AR_BufLen_S) & AR_BufLen);
-	ACCESS_ONCE(ads->ctl5) = val;
+	ACCESS_ONCE_RW(ads->ctl5) = val;
 	checksum += (val = (i->buf_len[2] << AR_BufLen_S) & AR_BufLen);
-	ACCESS_ONCE(ads->ctl7) = val;
+	ACCESS_ONCE_RW(ads->ctl7) = val;
 	checksum += (val = (i->buf_len[3] << AR_BufLen_S) & AR_BufLen);
-	ACCESS_ONCE(ads->ctl9) = val;
+	ACCESS_ONCE_RW(ads->ctl9) = val;
 
 	checksum = (u16) (((checksum & 0xffff) + (checksum >> 16)) & 0xffff);
-	ACCESS_ONCE(ads->ctl10) = checksum;
+	ACCESS_ONCE_RW(ads->ctl10) = checksum;
 
 	if (i->is_first || i->is_last) {
-		ACCESS_ONCE(ads->ctl13) = set11nTries(i->rates, 0)
+		ACCESS_ONCE_RW(ads->ctl13) = set11nTries(i->rates, 0)
 			| set11nTries(i->rates, 1)
 			| set11nTries(i->rates, 2)
 			| set11nTries(i->rates, 3)
 			| (i->dur_update ? AR_DurUpdateEna : 0)
 			| SM(0, AR_BurstDur);
 
-		ACCESS_ONCE(ads->ctl14) = set11nRate(i->rates, 0)
+		ACCESS_ONCE_RW(ads->ctl14) = set11nRate(i->rates, 0)
 			| set11nRate(i->rates, 1)
 			| set11nRate(i->rates, 2)
 			| set11nRate(i->rates, 3);
 	} else {
-		ACCESS_ONCE(ads->ctl13) = 0;
-		ACCESS_ONCE(ads->ctl14) = 0;
+		ACCESS_ONCE_RW(ads->ctl13) = 0;
+		ACCESS_ONCE_RW(ads->ctl14) = 0;
 	}
 
 	ads->ctl20 = 0;
@@ -89,17 +89,17 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 
 	ctl17 = SM(i->keytype, AR_EncrType);
 	if (!i->is_first) {
-		ACCESS_ONCE(ads->ctl11) = 0;
-		ACCESS_ONCE(ads->ctl12) = i->is_last ? 0 : AR_TxMore;
-		ACCESS_ONCE(ads->ctl15) = 0;
-		ACCESS_ONCE(ads->ctl16) = 0;
-		ACCESS_ONCE(ads->ctl17) = ctl17;
-		ACCESS_ONCE(ads->ctl18) = 0;
-		ACCESS_ONCE(ads->ctl19) = 0;
+		ACCESS_ONCE_RW(ads->ctl11) = 0;
+		ACCESS_ONCE_RW(ads->ctl12) = i->is_last ? 0 : AR_TxMore;
+		ACCESS_ONCE_RW(ads->ctl15) = 0;
+		ACCESS_ONCE_RW(ads->ctl16) = 0;
+		ACCESS_ONCE_RW(ads->ctl17) = ctl17;
+		ACCESS_ONCE_RW(ads->ctl18) = 0;
+		ACCESS_ONCE_RW(ads->ctl19) = 0;
 		return;
 	}
 
-	ACCESS_ONCE(ads->ctl11) = (i->pkt_len & AR_FrameLen)
+	ACCESS_ONCE_RW(ads->ctl11) = (i->pkt_len & AR_FrameLen)
 		| (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
 		| SM(i->txpower, AR_XmitPower)
 		| (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
@@ -135,22 +135,22 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 	val = (i->flags & ATH9K_TXDESC_PAPRD) >> ATH9K_TXDESC_PAPRD_S;
 	ctl12 |= SM(val, AR_PAPRDChainMask);
 
-	ACCESS_ONCE(ads->ctl12) = ctl12;
-	ACCESS_ONCE(ads->ctl17) = ctl17;
+	ACCESS_ONCE_RW(ads->ctl12) = ctl12;
+	ACCESS_ONCE_RW(ads->ctl17) = ctl17;
 
-	ACCESS_ONCE(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0)
+	ACCESS_ONCE_RW(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0)
 		| set11nPktDurRTSCTS(i->rates, 1);
 
-	ACCESS_ONCE(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2)
+	ACCESS_ONCE_RW(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2)
 		| set11nPktDurRTSCTS(i->rates, 3);
 
-	ACCESS_ONCE(ads->ctl18) = set11nRateFlags(i->rates, 0)
+	ACCESS_ONCE_RW(ads->ctl18) = set11nRateFlags(i->rates, 0)
 		| set11nRateFlags(i->rates, 1)
 		| set11nRateFlags(i->rates, 2)
 		| set11nRateFlags(i->rates, 3)
 		| SM(i->rtscts_rate, AR_RTSCTSRate);
 
-	ACCESS_ONCE(ads->ctl19) = AR_Not_Sounding;
+	ACCESS_ONCE_RW(ads->ctl19) = AR_Not_Sounding;
 }
 
 static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads)
diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
index 0acd4b5..0591c91 100644
--- a/drivers/net/wireless/ath/ath9k/hw.h
+++ b/drivers/net/wireless/ath/ath9k/hw.h
@@ -629,7 +629,7 @@ struct ath_hw_private_ops {
 
 	/* ANI */
 	void (*ani_cache_ini_regs)(struct ath_hw *ah);
-};
+} __no_const;
 
 /**
  * struct ath_spec_scan - parameters for Atheros spectral scan
@@ -706,7 +706,7 @@ struct ath_hw_ops {
 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
 	void (*set_bt_ant_diversity)(struct ath_hw *hw, bool enable);
 #endif
-};
+} __no_const;
 
 struct ath_nf_limits {
 	s16 max;
diff --git a/drivers/net/wireless/b43/phy_lp.c b/drivers/net/wireless/b43/phy_lp.c
index 92190da..f3a4c4c 100644
--- a/drivers/net/wireless/b43/phy_lp.c
+++ b/drivers/net/wireless/b43/phy_lp.c
@@ -2514,7 +2514,7 @@ static int lpphy_b2063_tune(struct b43_wldev *dev,
 {
 	struct ssb_bus *bus = dev->dev->sdev->bus;
 
-	static const struct b206x_channel *chandata = NULL;
+	const struct b206x_channel *chandata = NULL;
 	u32 crystal_freq = bus->chipco.pmu.crystalfreq * 1000;
 	u32 freqref, vco_freq, val1, val2, val3, timeout, timeoutref, count;
 	u16 old_comm15, scale;
diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c
index dc1d20c..f7a4f06 100644
--- a/drivers/net/wireless/iwlegacy/3945-mac.c
+++ b/drivers/net/wireless/iwlegacy/3945-mac.c
@@ -3633,7 +3633,9 @@ il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	 */
 	if (il3945_mod_params.disable_hw_scan) {
 		D_INFO("Disabling hw_scan\n");
-		il3945_mac_ops.hw_scan = NULL;
+		pax_open_kernel();
+		*(void **)&il3945_mac_ops.hw_scan = NULL;
+		pax_close_kernel();
 	}
 
 	D_INFO("*** LOAD DRIVER ***\n");
diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
index 0ffb6ff..c0b7f0e 100644
--- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c
+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
@@ -188,7 +188,7 @@ static ssize_t iwl_dbgfs_sram_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[64];
-	int buf_size;
+	size_t buf_size;
 	u32 offset, len;
 
 	memset(buf, 0, sizeof(buf));
@@ -458,7 +458,7 @@ static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file,
 	struct iwl_priv *priv = file->private_data;
 
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	u32 reset_flag;
 
 	memset(buf, 0, sizeof(buf));
@@ -539,7 +539,7 @@ static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int ht40;
 
 	memset(buf, 0, sizeof(buf));
@@ -591,7 +591,7 @@ static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int value;
 
 	memset(buf, 0, sizeof(buf));
@@ -683,10 +683,10 @@ DEBUGFS_READ_FILE_OPS(temperature);
 DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
 DEBUGFS_READ_FILE_OPS(current_sleep_command);
 
-static const char *fmt_value = "  %-30s %10u\n";
-static const char *fmt_hex   = "  %-30s       0x%02X\n";
-static const char *fmt_table = "  %-30s %10u  %10u  %10u  %10u\n";
-static const char *fmt_header =
+static const char fmt_value[] = "  %-30s %10u\n";
+static const char fmt_hex[]   = "  %-30s       0x%02X\n";
+static const char fmt_table[] = "  %-30s %10u  %10u  %10u  %10u\n";
+static const char fmt_header[] =
 	"%-32s    current  cumulative       delta         max\n";
 
 static int iwl_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz)
@@ -1856,7 +1856,7 @@ static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int clear;
 
 	memset(buf, 0, sizeof(buf));
@@ -1901,7 +1901,7 @@ static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int trace;
 
 	memset(buf, 0, sizeof(buf));
@@ -1972,7 +1972,7 @@ static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int missed;
 
 	memset(buf, 0, sizeof(buf));
@@ -2013,7 +2013,7 @@ static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
 
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int plcp;
 
 	memset(buf, 0, sizeof(buf));
@@ -2073,7 +2073,7 @@ static ssize_t iwl_dbgfs_txfifo_flush_write(struct file *file,
 
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int flush;
 
 	memset(buf, 0, sizeof(buf));
@@ -2163,7 +2163,7 @@ static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
 
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int rts;
 
 	if (!priv->cfg->ht_params)
@@ -2204,7 +2204,7 @@ static ssize_t iwl_dbgfs_echo_test_write(struct file *file,
 {
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 
 	memset(buf, 0, sizeof(buf));
 	buf_size = min(count, sizeof(buf) -  1);
@@ -2238,7 +2238,7 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
 	struct iwl_priv *priv = file->private_data;
 	u32 event_log_flag;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 
 	/* check that the interface is up */
 	if (!iwl_is_ready(priv))
@@ -2292,7 +2292,7 @@ static ssize_t iwl_dbgfs_calib_disabled_write(struct file *file,
 	struct iwl_priv *priv = file->private_data;
 	char buf[8];
 	u32 calib_disabled;
-	int buf_size;
+	size_t buf_size;
 
 	memset(buf, 0, sizeof(buf));
 	buf_size = min(count, sizeof(buf) - 1);
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 788085b..0bc852a 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -1598,7 +1598,7 @@ static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
 	struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
 
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	u32 reset_flag;
 
 	memset(buf, 0, sizeof(buf));
@@ -1619,7 +1619,7 @@ static ssize_t iwl_dbgfs_csr_write(struct file *file,
 {
 	struct iwl_trans *trans = file->private_data;
 	char buf[8];
-	int buf_size;
+	size_t buf_size;
 	int csr;
 
 	memset(buf, 0, sizeof(buf));
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index a312c65..162b13a 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -2573,20 +2573,20 @@ static int __init init_mac80211_hwsim(void)
 	if (channels < 1)
 		return -EINVAL;
 
-	mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
-	mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
-	mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
-	mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
-	mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
-	mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
-	mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
-	mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
-	mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
-	mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
-	mac80211_hwsim_mchan_ops.assign_vif_chanctx =
-		mac80211_hwsim_assign_vif_chanctx;
-	mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
-		mac80211_hwsim_unassign_vif_chanctx;
+	pax_open_kernel();
+	memcpy((void *)&mac80211_hwsim_mchan_ops, &mac80211_hwsim_ops, sizeof mac80211_hwsim_mchan_ops);
+	*(void **)&mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
+	*(void **)&mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
+	*(void **)&mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
+	*(void **)&mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
+	*(void **)&mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
+	*(void **)&mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
+	*(void **)&mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
+	*(void **)&mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
+	*(void **)&mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
+	*(void **)&mac80211_hwsim_mchan_ops.assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx;
+	*(void **)&mac80211_hwsim_mchan_ops.unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx;
+	pax_close_kernel();
 
 	spin_lock_init(&hwsim_radio_lock);
 	INIT_LIST_HEAD(&hwsim_radios);
diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index d2a9a08..0cb175d 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -1236,7 +1236,7 @@ static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
 
 	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
 
-	if (rts_threshold < 0 || rts_threshold > 2347)
+	if (rts_threshold > 2347)
 		rts_threshold = 2347;
 
 	tmp = cpu_to_le32(rts_threshold);
diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
index d13f25c..2573994 100644
--- a/drivers/net/wireless/rt2x00/rt2x00.h
+++ b/drivers/net/wireless/rt2x00/rt2x00.h
@@ -375,7 +375,7 @@ struct rt2x00_intf {
 	 * for hardware which doesn't support hardware
 	 * sequence counting.
 	 */
-	atomic_t seqno;
+	atomic_unchecked_t seqno;
 };
 
 static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
index 5642ccc..01f03eb 100644
--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
@@ -250,9 +250,9 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev,
 	 * sequence counter given by mac80211.
 	 */
 	if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags))
-		seqno = atomic_add_return(0x10, &intf->seqno);
+		seqno = atomic_add_return_unchecked(0x10, &intf->seqno);
 	else
-		seqno = atomic_read(&intf->seqno);
+		seqno = atomic_read_unchecked(&intf->seqno);
 
 	hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
 	hdr->seq_ctrl |= cpu_to_le16(seqno);
diff --git a/drivers/net/wireless/ti/wl1251/sdio.c b/drivers/net/wireless/ti/wl1251/sdio.c
index b661f896..ddf7d2b 100644
--- a/drivers/net/wireless/ti/wl1251/sdio.c
+++ b/drivers/net/wireless/ti/wl1251/sdio.c
@@ -282,13 +282,17 @@ static int wl1251_sdio_probe(struct sdio_func *func,
 
 		irq_set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
 
-		wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
-		wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
+		pax_open_kernel();
+		*(void **)&wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
+		*(void **)&wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
+		pax_close_kernel();
 
 		wl1251_info("using dedicated interrupt line");
 	} else {
-		wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
-		wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
+		pax_open_kernel();
+		*(void **)&wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
+		*(void **)&wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
+		pax_close_kernel();
 
 		wl1251_info("using SDIO interrupt");
 	}
diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
index d50dfac..0a6f5be3 100644
--- a/drivers/net/wireless/ti/wl12xx/main.c
+++ b/drivers/net/wireless/ti/wl12xx/main.c
@@ -656,7 +656,9 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 		       sizeof(wl->conf.mem));
 
 		/* read data preparation is only needed by wl127x */
-		wl->ops->prepare_read = wl127x_prepare_read;
+		pax_open_kernel();
+		*(void **)&wl->ops->prepare_read = wl127x_prepare_read;
+		pax_close_kernel();
 
 		wlcore_set_min_fw_ver(wl, WL127X_CHIP_VER,
 			      WL127X_IFTYPE_SR_VER,  WL127X_MAJOR_SR_VER,
@@ -681,7 +683,9 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
 		       sizeof(wl->conf.mem));
 
 		/* read data preparation is only needed by wl127x */
-		wl->ops->prepare_read = wl127x_prepare_read;
+		pax_open_kernel();
+		*(void **)&wl->ops->prepare_read = wl127x_prepare_read;
+		pax_close_kernel();
 
 		wlcore_set_min_fw_ver(wl, WL127X_CHIP_VER,
 			      WL127X_IFTYPE_SR_VER,  WL127X_MAJOR_SR_VER,
diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
index de5b4fa..7996ec6 100644
--- a/drivers/net/wireless/ti/wl18xx/main.c
+++ b/drivers/net/wireless/ti/wl18xx/main.c
@@ -1900,8 +1900,10 @@ static int wl18xx_setup(struct wl1271 *wl)
 	}
 
 	if (!checksum_param) {
-		wl18xx_ops.set_rx_csum = NULL;
-		wl18xx_ops.init_vif = NULL;
+		pax_open_kernel();
+		*(void **)&wl18xx_ops.set_rx_csum = NULL;
+		*(void **)&wl18xx_ops.init_vif = NULL;
+		pax_close_kernel();
 	}
 
 	/* Enable 11a Band only if we have 5G antennas */
diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
index a912dc0..a8225ba 100644
--- a/drivers/net/wireless/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
@@ -385,7 +385,7 @@ static inline void handle_regs_int(struct urb *urb)
 {
 	struct zd_usb *usb = urb->context;
 	struct zd_usb_interrupt *intr = &usb->intr;
-	int len;
+	unsigned int len;
 	u16 int_num;
 
 	ZD_ASSERT(in_interrupt());
diff --git a/drivers/nfc/nfcwilink.c b/drivers/nfc/nfcwilink.c
index 683671a..4519fc2 100644
--- a/drivers/nfc/nfcwilink.c
+++ b/drivers/nfc/nfcwilink.c
@@ -497,7 +497,7 @@ static struct nci_ops nfcwilink_ops = {
 
 static int nfcwilink_probe(struct platform_device *pdev)
 {
-	static struct nfcwilink *drv;
+	struct nfcwilink *drv;
 	int rc;
 	__u32 protocols;
 
diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
index d93b2b6..ae50401 100644
--- a/drivers/oprofile/buffer_sync.c
+++ b/drivers/oprofile/buffer_sync.c
@@ -332,7 +332,7 @@ static void add_data(struct op_entry *entry, struct mm_struct *mm)
 		if (cookie == NO_COOKIE)
 			offset = pc;
 		if (cookie == INVALID_COOKIE) {
-			atomic_inc(&oprofile_stats.sample_lost_no_mapping);
+			atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping);
 			offset = pc;
 		}
 		if (cookie != last_cookie) {
@@ -376,14 +376,14 @@ add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel)
 	/* add userspace sample */
 
 	if (!mm) {
-		atomic_inc(&oprofile_stats.sample_lost_no_mm);
+		atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mm);
 		return 0;
 	}
 
 	cookie = lookup_dcookie(mm, s->eip, &offset);
 
 	if (cookie == INVALID_COOKIE) {
-		atomic_inc(&oprofile_stats.sample_lost_no_mapping);
+		atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping);
 		return 0;
 	}
 
@@ -552,7 +552,7 @@ void sync_buffer(int cpu)
 		/* ignore backtraces if failed to add a sample */
 		if (state == sb_bt_start) {
 			state = sb_bt_ignore;
-			atomic_inc(&oprofile_stats.bt_lost_no_mapping);
+			atomic_inc_unchecked(&oprofile_stats.bt_lost_no_mapping);
 		}
 	}
 	release_mm(mm);
diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
index c0cc4e7..44d4e54 100644
--- a/drivers/oprofile/event_buffer.c
+++ b/drivers/oprofile/event_buffer.c
@@ -53,7 +53,7 @@ void add_event_entry(unsigned long value)
 	}
 
 	if (buffer_pos == buffer_size) {
-		atomic_inc(&oprofile_stats.event_lost_overflow);
+		atomic_inc_unchecked(&oprofile_stats.event_lost_overflow);
 		return;
 	}
 
diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
index ed2c3ec..deda85a 100644
--- a/drivers/oprofile/oprof.c
+++ b/drivers/oprofile/oprof.c
@@ -110,7 +110,7 @@ static void switch_worker(struct work_struct *work)
 	if (oprofile_ops.switch_events())
 		return;
 
-	atomic_inc(&oprofile_stats.multiplex_counter);
+	atomic_inc_unchecked(&oprofile_stats.multiplex_counter);
 	start_switch_worker();
 }
 
diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c
index ee2cfce..7f8f699 100644
--- a/drivers/oprofile/oprofile_files.c
+++ b/drivers/oprofile/oprofile_files.c
@@ -27,7 +27,7 @@ unsigned long oprofile_time_slice;
 
 #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
 
-static ssize_t timeout_read(struct file *file, char __user *buf,
+static ssize_t __intentional_overflow(-1) timeout_read(struct file *file, char __user *buf,
 		size_t count, loff_t *offset)
 {
 	return oprofilefs_ulong_to_user(jiffies_to_msecs(oprofile_time_slice),
diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c
index 59659ce..6c860a0 100644
--- a/drivers/oprofile/oprofile_stats.c
+++ b/drivers/oprofile/oprofile_stats.c
@@ -30,11 +30,11 @@ void oprofile_reset_stats(void)
 		cpu_buf->sample_invalid_eip = 0;
 	}
 
-	atomic_set(&oprofile_stats.sample_lost_no_mm, 0);
-	atomic_set(&oprofile_stats.sample_lost_no_mapping, 0);
-	atomic_set(&oprofile_stats.event_lost_overflow, 0);
-	atomic_set(&oprofile_stats.bt_lost_no_mapping, 0);
-	atomic_set(&oprofile_stats.multiplex_counter, 0);
+	atomic_set_unchecked(&oprofile_stats.sample_lost_no_mm, 0);
+	atomic_set_unchecked(&oprofile_stats.sample_lost_no_mapping, 0);
+	atomic_set_unchecked(&oprofile_stats.event_lost_overflow, 0);
+	atomic_set_unchecked(&oprofile_stats.bt_lost_no_mapping, 0);
+	atomic_set_unchecked(&oprofile_stats.multiplex_counter, 0);
 }
 
 
diff --git a/drivers/oprofile/oprofile_stats.h b/drivers/oprofile/oprofile_stats.h
index 1fc622b..8c48fc3 100644
--- a/drivers/oprofile/oprofile_stats.h
+++ b/drivers/oprofile/oprofile_stats.h
@@ -13,11 +13,11 @@
 #include <linux/atomic.h>
 
 struct oprofile_stat_struct {
-	atomic_t sample_lost_no_mm;
-	atomic_t sample_lost_no_mapping;
-	atomic_t bt_lost_no_mapping;
-	atomic_t event_lost_overflow;
-	atomic_t multiplex_counter;
+	atomic_unchecked_t sample_lost_no_mm;
+	atomic_unchecked_t sample_lost_no_mapping;
+	atomic_unchecked_t bt_lost_no_mapping;
+	atomic_unchecked_t event_lost_overflow;
+	atomic_unchecked_t multiplex_counter;
 };
 
 extern struct oprofile_stat_struct oprofile_stats;
diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index 3f49345..c750d0b 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -176,8 +176,8 @@ int oprofilefs_create_ro_ulong(struct dentry *root,
 
 static ssize_t atomic_read_file(struct file *file, char __user *buf, size_t count, loff_t *offset)
 {
-	atomic_t *val = file->private_data;
-	return oprofilefs_ulong_to_user(atomic_read(val), buf, count, offset);
+	atomic_unchecked_t *val = file->private_data;
+	return oprofilefs_ulong_to_user(atomic_read_unchecked(val), buf, count, offset);
 }
 
 
@@ -189,7 +189,7 @@ static const struct file_operations atomic_ro_fops = {
 
 
 int oprofilefs_create_ro_atomic(struct dentry *root,
-	char const *name, atomic_t *val)
+	char const *name, atomic_unchecked_t *val)
 {
 	return __oprofilefs_create_file(root, name,
 					&atomic_ro_fops, 0444, val);
diff --git a/drivers/oprofile/timer_int.c b/drivers/oprofile/timer_int.c
index 61be1d9..dec05d7 100644
--- a/drivers/oprofile/timer_int.c
+++ b/drivers/oprofile/timer_int.c
@@ -93,7 +93,7 @@ static int oprofile_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __refdata oprofile_cpu_notifier = {
+static struct notifier_block oprofile_cpu_notifier = {
 	.notifier_call = oprofile_cpu_notify,
 };
 
diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c
index 3b47080..6cd05dd 100644
--- a/drivers/parport/procfs.c
+++ b/drivers/parport/procfs.c
@@ -64,7 +64,7 @@ static int do_active_device(struct ctl_table *table, int write,
 
 	*ppos += len;
 
-	return copy_to_user(result, buffer, len) ? -EFAULT : 0;
+	return (len > sizeof buffer || copy_to_user(result, buffer, len)) ? -EFAULT : 0;
 }
 
 #ifdef CONFIG_PARPORT_1284
@@ -106,7 +106,7 @@ static int do_autoprobe(struct ctl_table *table, int write,
 
 	*ppos += len;
 
-	return copy_to_user (result, buffer, len) ? -EFAULT : 0;
+	return (len > sizeof buffer || copy_to_user (result, buffer, len)) ? -EFAULT : 0;
 }
 #endif /* IEEE1284.3 support. */
 
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index 8dcccff..35d701d 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -452,7 +452,9 @@ static int __init ibm_acpiphp_init(void)
 		goto init_cleanup;
 	}
 
-	ibm_apci_table_attr.size = ibm_get_table_from_acpi(NULL);
+	pax_open_kernel();
+	*(size_t *)&ibm_apci_table_attr.size = ibm_get_table_from_acpi(NULL);
+	pax_close_kernel();
 	retval = sysfs_create_bin_file(sysdir, &ibm_apci_table_attr);
 
 	return retval;
diff --git a/drivers/pci/hotplug/cpcihp_generic.c b/drivers/pci/hotplug/cpcihp_generic.c
index 04fcd78..39e83f1 100644
--- a/drivers/pci/hotplug/cpcihp_generic.c
+++ b/drivers/pci/hotplug/cpcihp_generic.c
@@ -73,7 +73,6 @@ static u16 port;
 static unsigned int enum_bit;
 static u8 enum_mask;
 
-static struct cpci_hp_controller_ops generic_hpc_ops;
 static struct cpci_hp_controller generic_hpc;
 
 static int __init validate_parameters(void)
@@ -139,6 +138,10 @@ static int query_enum(void)
 	return ((value & enum_mask) == enum_mask);
 }
 
+static struct cpci_hp_controller_ops generic_hpc_ops = {
+	.query_enum = query_enum,
+};
+
 static int __init cpcihp_generic_init(void)
 {
 	int status;
@@ -165,7 +168,6 @@ static int __init cpcihp_generic_init(void)
 	pci_dev_put(dev);
 
 	memset(&generic_hpc, 0, sizeof (struct cpci_hp_controller));
-	generic_hpc_ops.query_enum = query_enum;
 	generic_hpc.ops = &generic_hpc_ops;
 
 	status = cpci_hp_register_controller(&generic_hpc);
diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c
index 6757b3e..d3bad62 100644
--- a/drivers/pci/hotplug/cpcihp_zt5550.c
+++ b/drivers/pci/hotplug/cpcihp_zt5550.c
@@ -59,7 +59,6 @@
 /* local variables */
 static bool debug;
 static bool poll;
-static struct cpci_hp_controller_ops zt5550_hpc_ops;
 static struct cpci_hp_controller zt5550_hpc;
 
 /* Primary cPCI bus bridge device */
@@ -205,6 +204,10 @@ static int zt5550_hc_disable_irq(void)
 	return 0;
 }
 
+static struct cpci_hp_controller_ops zt5550_hpc_ops = {
+	.query_enum = zt5550_hc_query_enum,
+};
+
 static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 {
 	int status;
@@ -216,16 +219,17 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
 	dbg("returned from zt5550_hc_config");
 
 	memset(&zt5550_hpc, 0, sizeof (struct cpci_hp_controller));
-	zt5550_hpc_ops.query_enum = zt5550_hc_query_enum;
 	zt5550_hpc.ops = &zt5550_hpc_ops;
 	if(!poll) {
 		zt5550_hpc.irq = hc_dev->irq;
 		zt5550_hpc.irq_flags = IRQF_SHARED;
 		zt5550_hpc.dev_id = hc_dev;
 
-		zt5550_hpc_ops.enable_irq = zt5550_hc_enable_irq;
-		zt5550_hpc_ops.disable_irq = zt5550_hc_disable_irq;
-		zt5550_hpc_ops.check_irq = zt5550_hc_check_irq;
+		pax_open_kernel();
+		*(void **)&zt5550_hpc_ops.enable_irq = zt5550_hc_enable_irq;
+		*(void **)&zt5550_hpc_ops.disable_irq = zt5550_hc_disable_irq;
+		*(void **)&zt5550_hpc_ops.check_irq = zt5550_hc_check_irq;
+		pax_open_kernel();
 	} else {
 		info("using ENUM# polling mode");
 	}
diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c
index 0968a9b..5a00edf 100644
--- a/drivers/pci/hotplug/cpqphp_nvram.c
+++ b/drivers/pci/hotplug/cpqphp_nvram.c
@@ -427,9 +427,13 @@ static u32 store_HRT (void __iomem *rom_start)
 
 void compaq_nvram_init (void __iomem *rom_start)
 {
+
+#ifndef CONFIG_PAX_KERNEXEC
 	if (rom_start) {
 		compaq_int15_entry_point = (rom_start + ROM_INT15_PHY_ADDR - ROM_PHY_ADDR);
 	}
+#endif
+
 	dbg("int15 entry  = %p\n", compaq_int15_entry_point);
 
 	/* initialize our int15 lock */
diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
index 56d8486..f26113f 100644
--- a/drivers/pci/hotplug/pci_hotplug_core.c
+++ b/drivers/pci/hotplug/pci_hotplug_core.c
@@ -436,8 +436,10 @@ int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus,
 		return -EINVAL;
 	}
 
-	slot->ops->owner = owner;
-	slot->ops->mod_name = mod_name;
+	pax_open_kernel();
+	*(struct module **)&slot->ops->owner = owner;
+	*(const char **)&slot->ops->mod_name = mod_name;
+	pax_close_kernel();
 
 	mutex_lock(&pci_hp_mutex);
 	/*
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index a2297db..7c7d161 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -92,7 +92,7 @@ static int init_slot(struct controller *ctrl)
 	struct slot *slot = ctrl->slot;
 	struct hotplug_slot *hotplug = NULL;
 	struct hotplug_slot_info *info = NULL;
-	struct hotplug_slot_ops *ops = NULL;
+	hotplug_slot_ops_no_const *ops = NULL;
 	char name[SLOT_NAME_SIZE];
 	int retval = -ENOMEM;
 
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 13f3d30..363cb44 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -523,8 +523,8 @@ static int populate_msi_sysfs(struct pci_dev *pdev)
 {
 	struct attribute **msi_attrs;
 	struct attribute *msi_attr;
-	struct device_attribute *msi_dev_attr;
-	struct attribute_group *msi_irq_group;
+	device_attribute_no_const *msi_dev_attr;
+	attribute_group_no_const *msi_irq_group;
 	const struct attribute_group **msi_irq_groups;
 	struct msi_desc *entry;
 	int ret = -ENOMEM;
@@ -584,7 +584,7 @@ error_attrs:
 	count = 0;
 	msi_attr = msi_attrs[count];
 	while (msi_attr) {
-		msi_dev_attr = container_of(msi_attr, struct device_attribute, attr);
+		msi_dev_attr = container_of(msi_attr, device_attribute_no_const, attr);
 		kfree(msi_attr->name);
 		kfree(msi_dev_attr);
 		++count;
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 9ff0a90..e819dda 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1134,7 +1134,7 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
 {
 	/* allocate attribute structure, piggyback attribute name */
 	int name_len = write_combine ? 13 : 10;
-	struct bin_attribute *res_attr;
+	bin_attribute_no_const *res_attr;
 	int retval;
 
 	res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
@@ -1311,7 +1311,7 @@ static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_stor
 static int pci_create_capabilities_sysfs(struct pci_dev *dev)
 {
 	int retval;
-	struct bin_attribute *attr;
+	bin_attribute_no_const *attr;
 
 	/* If the device has VPD, try to expose it in sysfs. */
 	if (dev->vpd) {
@@ -1358,7 +1358,7 @@ int __must_check pci_create_sysfs_dev_files(struct pci_dev *pdev)
 {
 	int retval;
 	int rom_size = 0;
-	struct bin_attribute *attr;
+	bin_attribute_no_const *attr;
 
 	if (!sysfs_initialized)
 		return -EACCES;
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 0601890..dc15007 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -91,7 +91,7 @@ struct pci_vpd_ops {
 struct pci_vpd {
 	unsigned int len;
 	const struct pci_vpd_ops *ops;
-	struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
+	bin_attribute_no_const *attr; /* descriptor for sysfs VPD entry */
 };
 
 int pci_vpd_pci22_init(struct pci_dev *dev);
diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
index e1e7026..d28dd33 100644
--- a/drivers/pci/pcie/aspm.c
+++ b/drivers/pci/pcie/aspm.c
@@ -27,9 +27,9 @@
 #define MODULE_PARAM_PREFIX "pcie_aspm."
 
 /* Note: those are not register definitions */
-#define ASPM_STATE_L0S_UP	(1)	/* Upstream direction L0s state */
-#define ASPM_STATE_L0S_DW	(2)	/* Downstream direction L0s state */
-#define ASPM_STATE_L1		(4)	/* L1 state */
+#define ASPM_STATE_L0S_UP	(1U)	/* Upstream direction L0s state */
+#define ASPM_STATE_L0S_DW	(2U)	/* Downstream direction L0s state */
+#define ASPM_STATE_L1		(4U)	/* L1 state */
 #define ASPM_STATE_L0S		(ASPM_STATE_L0S_UP | ASPM_STATE_L0S_DW)
 #define ASPM_STATE_ALL		(ASPM_STATE_L0S | ASPM_STATE_L1)
 
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e3cf8a2..be1baf0 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -176,7 +176,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
 	struct pci_bus_region region, inverted_region;
 	bool bar_too_big = false, bar_too_high = false, bar_invalid = false;
 
-	mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
+	mask = type ? (u32)PCI_ROM_ADDRESS_MASK : ~0;
 
 	/* No printks while decoding is disabled! */
 	if (!dev->mmio_always_on) {
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 3f155e7..0f4b1f0 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -434,7 +434,16 @@ static const struct file_operations proc_bus_pci_dev_operations = {
 static int __init pci_proc_init(void)
 {
 	struct pci_dev *dev = NULL;
+
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR, NULL);
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL);
+#endif
+#else
 	proc_bus_pci_dir = proc_mkdir("bus/pci", NULL);
+#endif
 	proc_create("devices", 0, proc_bus_pci_dir,
 		    &proc_bus_pci_dev_operations);
 	proc_initialized = 1;
diff --git a/drivers/platform/chrome/chromeos_laptop.c b/drivers/platform/chrome/chromeos_laptop.c
index 7f1a2e2..bc4b405 100644
--- a/drivers/platform/chrome/chromeos_laptop.c
+++ b/drivers/platform/chrome/chromeos_laptop.c
@@ -395,7 +395,7 @@ static struct chromeos_laptop cr48 = {
 	.callback = chromeos_laptop_dmi_matched, \
 	.driver_data = (void *)&board_
 
-static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = {
+static struct dmi_system_id chromeos_laptop_dmi_table[] __initconst = {
 	{
 		.ident = "Samsung Series 5 550",
 		.matches = {
diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c
index 297b664..ab91e39 100644
--- a/drivers/platform/x86/alienware-wmi.c
+++ b/drivers/platform/x86/alienware-wmi.c
@@ -133,7 +133,7 @@ struct wmax_led_args {
 } __packed;
 
 static struct platform_device *platform_device;
-static struct device_attribute *zone_dev_attrs;
+static device_attribute_no_const *zone_dev_attrs;
 static struct attribute **zone_attrs;
 static struct platform_zone *zone_data;
 
@@ -144,7 +144,7 @@ static struct platform_driver platform_driver = {
 		   }
 };
 
-static struct attribute_group zone_attribute_group = {
+static attribute_group_no_const zone_attribute_group = {
 	.name = "rgb_zones",
 };
 
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 3c6cced..12e0771 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1592,6 +1592,10 @@ static int show_dsts(struct seq_file *m, void *data)
 	int err;
 	u32 retval = -1;
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+	return -EPERM;
+#endif
+
 	err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
 
 	if (err < 0)
@@ -1608,6 +1612,10 @@ static int show_devs(struct seq_file *m, void *data)
 	int err;
 	u32 retval = -1;
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+	return -EPERM;
+#endif
+
 	err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
 				    &retval);
 
@@ -1632,6 +1640,10 @@ static int show_call(struct seq_file *m, void *data)
 	union acpi_object *obj;
 	acpi_status status;
 
+#ifdef CONFIG_GRKERNSEC_KMEM
+	return -EPERM;
+#endif
+
 	status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
 				     1, asus->debug.method_id,
 				     &input, &output);
diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
index 62f8030..c7f2a45 100644
--- a/drivers/platform/x86/msi-laptop.c
+++ b/drivers/platform/x86/msi-laptop.c
@@ -1000,12 +1000,14 @@ static int __init load_scm_model_init(struct platform_device *sdev)
 
 	if (!quirks->ec_read_only) {
 		/* allow userland write sysfs file  */
-		dev_attr_bluetooth.store = store_bluetooth;
-		dev_attr_wlan.store = store_wlan;
-		dev_attr_threeg.store = store_threeg;
-		dev_attr_bluetooth.attr.mode |= S_IWUSR;
-		dev_attr_wlan.attr.mode |= S_IWUSR;
-		dev_attr_threeg.attr.mode |= S_IWUSR;
+		pax_open_kernel();
+		*(void **)&dev_attr_bluetooth.store = store_bluetooth;
+		*(void **)&dev_attr_wlan.store = store_wlan;
+		*(void **)&dev_attr_threeg.store = store_threeg;
+		*(umode_t *)&dev_attr_bluetooth.attr.mode |= S_IWUSR;
+		*(umode_t *)&dev_attr_wlan.attr.mode |= S_IWUSR;
+		*(umode_t *)&dev_attr_threeg.attr.mode |= S_IWUSR;
+		pax_close_kernel();
 	}
 
 	/* disable hardware control by fn key */
diff --git a/drivers/platform/x86/msi-wmi.c b/drivers/platform/x86/msi-wmi.c
index 70222f2..8c8ce66 100644
--- a/drivers/platform/x86/msi-wmi.c
+++ b/drivers/platform/x86/msi-wmi.c
@@ -183,7 +183,7 @@ static const struct backlight_ops msi_backlight_ops = {
 static void msi_wmi_notify(u32 value, void *context)
 {
 	struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
-	static struct key_entry *key;
+	struct key_entry *key;
 	union acpi_object *obj;
 	acpi_status status;
 
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 9c5a074..06c976a 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -2527,7 +2527,7 @@ static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
 }
 
 /* High speed charging function */
-static struct device_attribute *hsc_handle;
+static device_attribute_no_const *hsc_handle;
 
 static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
 		struct device_attribute *attr,
@@ -2601,7 +2601,7 @@ static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
 }
 
 /* low battery function */
-static struct device_attribute *lowbatt_handle;
+static device_attribute_no_const *lowbatt_handle;
 
 static ssize_t sony_nc_lowbatt_store(struct device *dev,
 		struct device_attribute *attr,
@@ -2667,7 +2667,7 @@ static void sony_nc_lowbatt_cleanup(struct platform_device *pd)
 }
 
 /* fan speed function */
-static struct device_attribute *fan_handle, *hsf_handle;
+static device_attribute_no_const *fan_handle, *hsf_handle;
 
 static ssize_t sony_nc_hsfan_store(struct device *dev,
 		struct device_attribute *attr,
@@ -2774,7 +2774,7 @@ static void sony_nc_fanspeed_cleanup(struct platform_device *pd)
 }
 
 /* USB charge function */
-static struct device_attribute *uc_handle;
+static device_attribute_no_const *uc_handle;
 
 static ssize_t sony_nc_usb_charge_store(struct device *dev,
 		struct device_attribute *attr,
@@ -2848,7 +2848,7 @@ static void sony_nc_usb_charge_cleanup(struct platform_device *pd)
 }
 
 /* Panel ID function */
-static struct device_attribute *panel_handle;
+static device_attribute_no_const *panel_handle;
 
 static ssize_t sony_nc_panelid_show(struct device *dev,
 		struct device_attribute *attr, char *buffer)
@@ -2895,7 +2895,7 @@ static void sony_nc_panelid_cleanup(struct platform_device *pd)
 }
 
 /* smart connect function */
-static struct device_attribute *sc_handle;
+static device_attribute_no_const *sc_handle;
 
 static ssize_t sony_nc_smart_conn_store(struct device *dev,
 		struct device_attribute *attr,
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index d82f196..5458f34 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -2094,7 +2094,7 @@ static int hotkey_mask_get(void)
 	return 0;
 }
 
-void static hotkey_mask_warn_incomplete_mask(void)
+static void hotkey_mask_warn_incomplete_mask(void)
 {
 	/* log only what the user can fix... */
 	const u32 wantedmask = hotkey_driver_mask &
@@ -2438,10 +2438,10 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
 				&& !tp_features.bright_unkfw)
 			TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
 	}
+}
 
 #undef TPACPI_COMPARE_KEY
 #undef TPACPI_MAY_SEND_KEY
-}
 
 /*
  * Polling driver
diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
index 438d4c7..ca8a2fb 100644
--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -59,7 +59,7 @@ do { \
 	set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \
 } while(0)
 
-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093,
 			(unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
 
 /*
@@ -96,7 +96,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
 
 	cpu = get_cpu();
 	save_desc_40 = get_cpu_gdt_table(cpu)[0x40 / 8];
+
+	pax_open_kernel();
 	get_cpu_gdt_table(cpu)[0x40 / 8] = bad_bios_desc;
+	pax_close_kernel();
 
 	/* On some boxes IRQ's during PnP BIOS calls are deadly.  */
 	spin_lock_irqsave(&pnp_bios_lock, flags);
@@ -134,7 +137,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
 			     :"memory");
 	spin_unlock_irqrestore(&pnp_bios_lock, flags);
 
+	pax_open_kernel();
 	get_cpu_gdt_table(cpu)[0x40 / 8] = save_desc_40;
+	pax_close_kernel();
+
 	put_cpu();
 
 	/* If we get here and this is set then the PnP BIOS faulted on us. */
@@ -468,7 +474,7 @@ int pnp_bios_read_escd(char *data, u32 nvram_base)
 	return status;
 }
 
-void pnpbios_calls_init(union pnp_bios_install_struct *header)
+void __init pnpbios_calls_init(union pnp_bios_install_struct *header)
 {
 	int i;
 
@@ -476,6 +482,8 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
 	pnp_bios_callpoint.offset = header->fields.pm16offset;
 	pnp_bios_callpoint.segment = PNP_CS16;
 
+	pax_open_kernel();
+
 	for_each_possible_cpu(i) {
 		struct desc_struct *gdt = get_cpu_gdt_table(i);
 		if (!gdt)
@@ -487,4 +495,6 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
 		set_desc_base(&gdt[GDT_ENTRY_PNPBIOS_DS],
 			 (unsigned long)__va(header->fields.pm16dseg));
 	}
+
+	pax_close_kernel();
 }
diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
index 0c52e2a..3421ab7 100644
--- a/drivers/power/pda_power.c
+++ b/drivers/power/pda_power.c
@@ -37,7 +37,11 @@ static int polling;
 
 #if IS_ENABLED(CONFIG_USB_PHY)
 static struct usb_phy *transceiver;
-static struct notifier_block otg_nb;
+static int otg_handle_notification(struct notifier_block *nb,
+		unsigned long event, void *unused);
+static struct notifier_block otg_nb = {
+	.notifier_call = otg_handle_notification
+};
 #endif
 
 static struct regulator *ac_draw;
@@ -369,7 +373,6 @@ static int pda_power_probe(struct platform_device *pdev)
 
 #if IS_ENABLED(CONFIG_USB_PHY)
 	if (!IS_ERR_OR_NULL(transceiver) && pdata->use_otg_notifier) {
-		otg_nb.notifier_call = otg_handle_notification;
 		ret = usb_register_notifier(transceiver, &otg_nb);
 		if (ret) {
 			dev_err(dev, "failure to register otg notifier\n");
diff --git a/drivers/power/power_supply.h b/drivers/power/power_supply.h
index cc439fd..8fa30df 100644
--- a/drivers/power/power_supply.h
+++ b/drivers/power/power_supply.h
@@ -16,12 +16,12 @@ struct power_supply;
 
 #ifdef CONFIG_SYSFS
 
-extern void power_supply_init_attrs(struct device_type *dev_type);
+extern void power_supply_init_attrs(void);
 extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env);
 
 #else
 
-static inline void power_supply_init_attrs(struct device_type *dev_type) {}
+static inline void power_supply_init_attrs(void) {}
 #define power_supply_uevent NULL
 
 #endif /* CONFIG_SYSFS */
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 5a5a24e..f7a3754 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -28,7 +28,10 @@ EXPORT_SYMBOL_GPL(power_supply_class);
 ATOMIC_NOTIFIER_HEAD(power_supply_notifier);
 EXPORT_SYMBOL_GPL(power_supply_notifier);
 
-static struct device_type power_supply_dev_type;
+extern const struct attribute_group *power_supply_attr_groups[];
+static struct device_type power_supply_dev_type = {
+	.groups = power_supply_attr_groups,
+};
 
 static bool __power_supply_is_supplied_by(struct power_supply *supplier,
 					 struct power_supply *supply)
@@ -639,7 +642,7 @@ static int __init power_supply_class_init(void)
 		return PTR_ERR(power_supply_class);
 
 	power_supply_class->dev_uevent = power_supply_uevent;
-	power_supply_init_attrs(&power_supply_dev_type);
+	power_supply_init_attrs();
 
 	return 0;
 }
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index 44420d1..967126e 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -230,17 +230,15 @@ static struct attribute_group power_supply_attr_group = {
 	.is_visible = power_supply_attr_is_visible,
 };
 
-static const struct attribute_group *power_supply_attr_groups[] = {
+const struct attribute_group *power_supply_attr_groups[] = {
 	&power_supply_attr_group,
 	NULL,
 };
 
-void power_supply_init_attrs(struct device_type *dev_type)
+void power_supply_init_attrs(void)
 {
 	int i;
 
-	dev_type->groups = power_supply_attr_groups;
-
 	for (i = 0; i < ARRAY_SIZE(power_supply_attrs); i++)
 		__power_supply_attrs[i] = &power_supply_attrs[i].attr;
 }
diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c
index 84419af..268ede8 100644
--- a/drivers/powercap/powercap_sys.c
+++ b/drivers/powercap/powercap_sys.c
@@ -154,8 +154,77 @@ struct powercap_constraint_attr {
 	struct device_attribute name_attr;
 };
 
+static ssize_t show_constraint_name(struct device *dev,
+				struct device_attribute *dev_attr,
+				char *buf);
+
 static struct powercap_constraint_attr
-				constraint_attrs[MAX_CONSTRAINTS_PER_ZONE];
+				constraint_attrs[MAX_CONSTRAINTS_PER_ZONE] = {
+	[0 ... MAX_CONSTRAINTS_PER_ZONE - 1] = {
+		.power_limit_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IWUSR | S_IRUGO
+			},
+			.show	= show_constraint_power_limit_uw,
+			.store	= store_constraint_power_limit_uw
+		},
+
+		.time_window_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IWUSR | S_IRUGO
+			},
+			.show	= show_constraint_time_window_us,
+			.store	= store_constraint_time_window_us
+		},
+
+		.max_power_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IRUGO
+			},
+			.show	= show_constraint_max_power_uw,
+			.store	= NULL
+		},
+
+		.min_power_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IRUGO
+			},
+			.show	= show_constraint_min_power_uw,
+			.store	= NULL
+		},
+
+		.max_time_window_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IRUGO
+			},
+			.show	= show_constraint_max_time_window_us,
+			.store	= NULL
+		},
+
+		.min_time_window_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IRUGO
+			},
+			.show	= show_constraint_min_time_window_us,
+			.store	= NULL
+		},
+
+		.name_attr = {
+			.attr = {
+				.name	= NULL,
+				.mode	= S_IRUGO
+			},
+			.show	= show_constraint_name,
+			.store	= NULL
+		}
+	}
+};
 
 /* A list of powercap control_types */
 static LIST_HEAD(powercap_cntrl_list);
@@ -193,23 +262,16 @@ static ssize_t show_constraint_name(struct device *dev,
 }
 
 static int create_constraint_attribute(int id, const char *name,
-				int mode,
-				struct device_attribute *dev_attr,
-				ssize_t (*show)(struct device *,
-					struct device_attribute *, char *),
-				ssize_t (*store)(struct device *,
-					struct device_attribute *,
-				const char *, size_t)
-				)
+				struct device_attribute *dev_attr)
 {
+	name = kasprintf(GFP_KERNEL, "constraint_%d_%s", id, name);
 
-	dev_attr->attr.name = kasprintf(GFP_KERNEL, "constraint_%d_%s",
-								id, name);
-	if (!dev_attr->attr.name)
+	if (!name)
 		return -ENOMEM;
-	dev_attr->attr.mode = mode;
-	dev_attr->show = show;
-	dev_attr->store = store;
+
+	pax_open_kernel();
+	*(const char **)&dev_attr->attr.name = name;
+	pax_close_kernel();
 
 	return 0;
 }
@@ -236,49 +298,31 @@ static int seed_constraint_attributes(void)
 
 	for (i = 0; i < MAX_CONSTRAINTS_PER_ZONE; ++i) {
 		ret = create_constraint_attribute(i, "power_limit_uw",
-					S_IWUSR | S_IRUGO,
-					&constraint_attrs[i].power_limit_attr,
-					show_constraint_power_limit_uw,
-					store_constraint_power_limit_uw);
+					&constraint_attrs[i].power_limit_attr);
 		if (ret)
 			goto err_alloc;
 		ret = create_constraint_attribute(i, "time_window_us",
-					S_IWUSR | S_IRUGO,
-					&constraint_attrs[i].time_window_attr,
-					show_constraint_time_window_us,
-					store_constraint_time_window_us);
+					&constraint_attrs[i].time_window_attr);
 		if (ret)
 			goto err_alloc;
-		ret = create_constraint_attribute(i, "name", S_IRUGO,
-				&constraint_attrs[i].name_attr,
-				show_constraint_name,
-				NULL);
+		ret = create_constraint_attribute(i, "name",
+				&constraint_attrs[i].name_attr);
 		if (ret)
 			goto err_alloc;
-		ret = create_constraint_attribute(i, "max_power_uw", S_IRUGO,
-				&constraint_attrs[i].max_power_attr,
-				show_constraint_max_power_uw,
-				NULL);
+		ret = create_constraint_attribute(i, "max_power_uw",
+				&constraint_attrs[i].max_power_attr);
 		if (ret)
 			goto err_alloc;
-		ret = create_constraint_attribute(i, "min_power_uw", S_IRUGO,
-				&constraint_attrs[i].min_power_attr,
-				show_constraint_min_power_uw,
-				NULL);
+		ret = create_constraint_attribute(i, "min_power_uw",
+				&constraint_attrs[i].min_power_attr);
 		if (ret)
 			goto err_alloc;
 		ret = create_constraint_attribute(i, "max_time_window_us",
-				S_IRUGO,
-				&constraint_attrs[i].max_time_window_attr,
-				show_constraint_max_time_window_us,
-				NULL);
+				&constraint_attrs[i].max_time_window_attr);
 		if (ret)
 			goto err_alloc;
 		ret = create_constraint_attribute(i, "min_time_window_us",
-				S_IRUGO,
-				&constraint_attrs[i].min_time_window_attr,
-				show_constraint_min_time_window_us,
-				NULL);
+				&constraint_attrs[i].min_time_window_attr);
 		if (ret)
 			goto err_alloc;
 
@@ -378,10 +422,12 @@ static void create_power_zone_common_attributes(
 		power_zone->zone_dev_attrs[count++] =
 					&dev_attr_max_energy_range_uj.attr;
 	if (power_zone->ops->get_energy_uj) {
+		pax_open_kernel();
 		if (power_zone->ops->reset_energy_uj)
-			dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUGO;
+			*(umode_t *)&dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUGO;
 		else
-			dev_attr_energy_uj.attr.mode = S_IRUGO;
+			*(umode_t *)&dev_attr_energy_uj.attr.mode = S_IRUGO;
+		pax_close_kernel();
 		power_zone->zone_dev_attrs[count++] =
 					&dev_attr_energy_uj.attr;
 	}
diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig
index ee3de34..bec7285 100644
--- a/drivers/ptp/Kconfig
+++ b/drivers/ptp/Kconfig
@@ -8,7 +8,6 @@ config PTP_1588_CLOCK
 	tristate "PTP clock support"
 	depends on NET
 	select PPS
-	select NET_PTP_CLASSIFY
 	help
 	  The IEEE 1588 standard defines a method to precisely
 	  synchronize distributed clocks over Ethernet networks. The
diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h
index 9c5d414..c7900ce 100644
--- a/drivers/ptp/ptp_private.h
+++ b/drivers/ptp/ptp_private.h
@@ -51,7 +51,7 @@ struct ptp_clock {
 	struct mutex pincfg_mux; /* protect concurrent info->pin_config access */
 	wait_queue_head_t tsev_wq;
 	int defunct; /* tells readers to go away when clock is being removed */
-	struct device_attribute *pin_dev_attr;
+	device_attribute_no_const *pin_dev_attr;
 	struct attribute **pin_attr;
 	struct attribute_group pin_attr_group;
 };
diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c
index 302e626..12579af 100644
--- a/drivers/ptp/ptp_sysfs.c
+++ b/drivers/ptp/ptp_sysfs.c
@@ -280,7 +280,7 @@ static int ptp_populate_pins(struct ptp_clock *ptp)
 		goto no_pin_attr;
 
 	for (i = 0; i < n_pins; i++) {
-		struct device_attribute *da = &ptp->pin_dev_attr[i];
+		device_attribute_no_const *da = &ptp->pin_dev_attr[i];
 		sysfs_attr_init(&da->attr);
 		da->attr.name = info->pin_config[i].name;
 		da->attr.mode = 0644;
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 4c1f999..11078c9 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3391,7 +3391,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
 {
 	const struct regulation_constraints *constraints = NULL;
 	const struct regulator_init_data *init_data;
-	static atomic_t regulator_no = ATOMIC_INIT(0);
+	static atomic_unchecked_t regulator_no = ATOMIC_INIT(0);
 	struct regulator_dev *rdev;
 	struct device *dev;
 	int ret, i;
@@ -3461,7 +3461,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
 	rdev->dev.of_node = of_node_get(config->of_node);
 	rdev->dev.parent = dev;
 	dev_set_name(&rdev->dev, "regulator.%d",
-		     atomic_inc_return(&regulator_no) - 1);
+		     atomic_inc_return_unchecked(&regulator_no) - 1);
 	ret = device_register(&rdev->dev);
 	if (ret != 0) {
 		put_device(&rdev->dev);
diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c
index 2fc4111..6aa88ca 100644
--- a/drivers/regulator/max8660.c
+++ b/drivers/regulator/max8660.c
@@ -424,8 +424,10 @@ static int max8660_probe(struct i2c_client *client,
 		max8660->shadow_regs[MAX8660_OVER1] = 5;
 	} else {
 		/* Otherwise devices can be toggled via software */
-		max8660_dcdc_ops.enable = max8660_dcdc_enable;
-		max8660_dcdc_ops.disable = max8660_dcdc_disable;
+		pax_open_kernel();
+		*(void **)&max8660_dcdc_ops.enable = max8660_dcdc_enable;
+		*(void **)&max8660_dcdc_ops.disable = max8660_dcdc_disable;
+		pax_close_kernel();
 	}
 
 	/*
diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
index dbedf17..18ff6b7 100644
--- a/drivers/regulator/max8973-regulator.c
+++ b/drivers/regulator/max8973-regulator.c
@@ -403,9 +403,11 @@ static int max8973_probe(struct i2c_client *client,
 	if (!pdata || !pdata->enable_ext_control) {
 		max->desc.enable_reg = MAX8973_VOUT;
 		max->desc.enable_mask = MAX8973_VOUT_ENABLE;
-		max->ops.enable = regulator_enable_regmap;
-		max->ops.disable = regulator_disable_regmap;
-		max->ops.is_enabled = regulator_is_enabled_regmap;
+		pax_open_kernel();
+		*(void **)&max->ops.enable = regulator_enable_regmap;
+		*(void **)&max->ops.disable = regulator_disable_regmap;
+		*(void **)&max->ops.is_enabled = regulator_is_enabled_regmap;
+		pax_close_kernel();
 	}
 
 	if (pdata) {
diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c
index f374fa5..26f0683 100644
--- a/drivers/regulator/mc13892-regulator.c
+++ b/drivers/regulator/mc13892-regulator.c
@@ -582,10 +582,12 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
 	}
 	mc13xxx_unlock(mc13892);
 
-	mc13892_regulators[MC13892_VCAM].desc.ops->set_mode
+	pax_open_kernel();
+	*(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->set_mode
 		= mc13892_vcam_set_mode;
-	mc13892_regulators[MC13892_VCAM].desc.ops->get_mode
+	*(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->get_mode
 		= mc13892_vcam_get_mode;
+	pax_close_kernel();
 
 	mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators,
 					ARRAY_SIZE(mc13892_regulators));
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index b0e4a3e..e5dc11e 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -789,7 +789,9 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
 	hpet_rtc_timer_init();
 
 	/* export at least the first block of NVRAM */
-	nvram.size = address_space - NVRAM_OFFSET;
+	pax_open_kernel();
+	*(size_t *)&nvram.size = address_space - NVRAM_OFFSET;
+	pax_close_kernel();
 	retval = sysfs_create_bin_file(&dev->kobj, &nvram);
 	if (retval < 0) {
 		dev_dbg(dev, "can't create nvram file? %d\n", retval);
diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
index d049393..bb20be0 100644
--- a/drivers/rtc/rtc-dev.c
+++ b/drivers/rtc/rtc-dev.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/rtc.h>
 #include <linux/sched.h>
+#include <linux/grsecurity.h>
 #include "rtc-core.h"
 
 static dev_t rtc_devt;
@@ -347,6 +348,8 @@ static long rtc_dev_ioctl(struct file *file,
 		if (copy_from_user(&tm, uarg, sizeof(tm)))
 			return -EFAULT;
 
+		gr_log_timechange();
+
 		return rtc_set_time(rtc, &tm);
 
 	case RTC_PIE_ON:
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index f03d5ba..8325bf6 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -107,7 +107,7 @@ struct ds1307 {
 	u8			offset; /* register's offset */
 	u8			regs[11];
 	u16			nvram_offset;
-	struct bin_attribute	*nvram;
+	bin_attribute_no_const	*nvram;
 	enum ds_type		type;
 	unsigned long		flags;
 #define HAS_NVRAM	0		/* bit 0 == sysfs file active */
diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c
index 11880c1..b823aa4 100644
--- a/drivers/rtc/rtc-m48t59.c
+++ b/drivers/rtc/rtc-m48t59.c
@@ -483,7 +483,9 @@ static int m48t59_rtc_probe(struct platform_device *pdev)
 	if (IS_ERR(m48t59->rtc))
 		return PTR_ERR(m48t59->rtc);
 
-	m48t59_nvram_attr.size = pdata->offset;
+	pax_open_kernel();
+	*(size_t *)&m48t59_nvram_attr.size = pdata->offset;
+	pax_close_kernel();
 
 	ret = sysfs_create_bin_file(&pdev->dev.kobj, &m48t59_nvram_attr);
 	if (ret)
diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h
index e693af6..2e525b6 100644
--- a/drivers/scsi/bfa/bfa_fcpim.h
+++ b/drivers/scsi/bfa/bfa_fcpim.h
@@ -36,7 +36,7 @@ struct bfa_iotag_s {
 
 struct bfa_itn_s {
 	bfa_isr_func_t isr;
-};
+} __no_const;
 
 void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
 		void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m));
diff --git a/drivers/scsi/bfa/bfa_fcs.c b/drivers/scsi/bfa/bfa_fcs.c
index a3ab5cc..8143622 100644
--- a/drivers/scsi/bfa/bfa_fcs.c
+++ b/drivers/scsi/bfa/bfa_fcs.c
@@ -38,10 +38,21 @@ struct bfa_fcs_mod_s {
 #define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
 
 static struct bfa_fcs_mod_s fcs_modules[] = {
-	{ bfa_fcs_port_attach, NULL, NULL },
-	{ bfa_fcs_uf_attach, NULL, NULL },
-	{ bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
-	  bfa_fcs_fabric_modexit },
+	{
+		.attach = bfa_fcs_port_attach,
+		.modinit = NULL,
+		.modexit = NULL
+	},
+	{
+		.attach = bfa_fcs_uf_attach,
+		.modinit = NULL,
+		.modexit = NULL
+	},
+	{
+		.attach = bfa_fcs_fabric_attach,
+		.modinit = bfa_fcs_fabric_modinit,
+		.modexit = bfa_fcs_fabric_modexit
+	},
 };
 
 /*
diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index ff75ef8..2dfe00a 100644
--- a/drivers/scsi/bfa/bfa_fcs_lport.c
+++ b/drivers/scsi/bfa/bfa_fcs_lport.c
@@ -89,15 +89,26 @@ static struct {
 	void		(*offline) (struct bfa_fcs_lport_s *port);
 } __port_action[] = {
 	{
-	bfa_fcs_lport_unknown_init, bfa_fcs_lport_unknown_online,
-			bfa_fcs_lport_unknown_offline}, {
-	bfa_fcs_lport_fab_init, bfa_fcs_lport_fab_online,
-			bfa_fcs_lport_fab_offline}, {
-	bfa_fcs_lport_n2n_init, bfa_fcs_lport_n2n_online,
-			bfa_fcs_lport_n2n_offline}, {
-	bfa_fcs_lport_loop_init, bfa_fcs_lport_loop_online,
-			bfa_fcs_lport_loop_offline},
-	};
+		.init = bfa_fcs_lport_unknown_init,
+		.online = bfa_fcs_lport_unknown_online,
+		.offline = bfa_fcs_lport_unknown_offline
+	},
+	{
+		.init = bfa_fcs_lport_fab_init,
+		.online = bfa_fcs_lport_fab_online,
+		.offline = bfa_fcs_lport_fab_offline
+	},
+	{
+		.init = bfa_fcs_lport_n2n_init,
+		.online = bfa_fcs_lport_n2n_online,
+		.offline = bfa_fcs_lport_n2n_offline
+	},
+	{
+		.init = bfa_fcs_lport_loop_init,
+		.online = bfa_fcs_lport_loop_online,
+		.offline = bfa_fcs_lport_loop_offline
+	},
+};
 
 /*
  *  fcs_port_sm FCS logical port state machine
diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index a38aafa0..fe8f03b 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -258,7 +258,7 @@ struct bfa_ioc_cbfn_s {
 	bfa_ioc_disable_cbfn_t	disable_cbfn;
 	bfa_ioc_hbfail_cbfn_t	hbfail_cbfn;
 	bfa_ioc_reset_cbfn_t	reset_cbfn;
-};
+} __no_const;
 
 /*
  * IOC event notification mechanism.
@@ -352,7 +352,7 @@ struct bfa_ioc_hwif_s {
 	void		(*ioc_set_alt_fwstate)	(struct bfa_ioc_s *ioc,
 					enum bfi_ioc_state fwstate);
 	enum bfi_ioc_state	(*ioc_get_alt_fwstate)	(struct bfa_ioc_s *ioc);
-};
+} __no_const;
 
 /*
  * Queue element to wait for room in request queue. FIFO order is
diff --git a/drivers/scsi/bfa/bfa_modules.h b/drivers/scsi/bfa/bfa_modules.h
index a14c784..6de6790 100644
--- a/drivers/scsi/bfa/bfa_modules.h
+++ b/drivers/scsi/bfa/bfa_modules.h
@@ -78,12 +78,12 @@ enum {
 									\
 	extern struct bfa_module_s hal_mod_ ## __mod;			\
 	struct bfa_module_s hal_mod_ ## __mod = {			\
-		bfa_ ## __mod ## _meminfo,				\
-		bfa_ ## __mod ## _attach,				\
-		bfa_ ## __mod ## _detach,				\
-		bfa_ ## __mod ## _start,				\
-		bfa_ ## __mod ## _stop,					\
-		bfa_ ## __mod ## _iocdisable,				\
+		.meminfo = bfa_ ## __mod ## _meminfo,			\
+		.attach = bfa_ ## __mod ## _attach,			\
+		.detach = bfa_ ## __mod ## _detach,			\
+		.start = bfa_ ## __mod ## _start,			\
+		.stop = bfa_ ## __mod ## _stop,				\
+		.iocdisable = bfa_ ## __mod ## _iocdisable,		\
 	}
 
 #define BFA_CACHELINE_SZ	(256)
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
index 045c4e1..13de803 100644
--- a/drivers/scsi/fcoe/fcoe_sysfs.c
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -33,8 +33,8 @@
  */
 #include "libfcoe.h"
 
-static atomic_t ctlr_num;
-static atomic_t fcf_num;
+static atomic_unchecked_t ctlr_num;
+static atomic_unchecked_t fcf_num;
 
 /*
  * fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs
@@ -685,7 +685,7 @@ struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
 	if (!ctlr)
 		goto out;
 
-	ctlr->id = atomic_inc_return(&ctlr_num) - 1;
+	ctlr->id = atomic_inc_return_unchecked(&ctlr_num) - 1;
 	ctlr->f = f;
 	ctlr->mode = FIP_CONN_TYPE_FABRIC;
 	INIT_LIST_HEAD(&ctlr->fcfs);
@@ -902,7 +902,7 @@ struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
 	fcf->dev.parent = &ctlr->dev;
 	fcf->dev.bus = &fcoe_bus_type;
 	fcf->dev.type = &fcoe_fcf_device_type;
-	fcf->id = atomic_inc_return(&fcf_num) - 1;
+	fcf->id = atomic_inc_return_unchecked(&fcf_num) - 1;
 	fcf->state = FCOE_FCF_STATE_UNKNOWN;
 
 	fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo;
@@ -938,8 +938,8 @@ int __init fcoe_sysfs_setup(void)
 {
 	int error;
 
-	atomic_set(&ctlr_num, 0);
-	atomic_set(&fcf_num, 0);
+	atomic_set_unchecked(&ctlr_num, 0);
+	atomic_set_unchecked(&fcf_num, 0);
 
 	error = bus_register(&fcoe_bus_type);
 	if (error)
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
index 3cbb57a..95e47a3 100644
--- a/drivers/scsi/hosts.c
+++ b/drivers/scsi/hosts.c
@@ -42,7 +42,7 @@
 #include "scsi_logging.h"
 
 
-static atomic_t scsi_host_next_hn = ATOMIC_INIT(0);	/* host_no for next new host */
+static atomic_unchecked_t scsi_host_next_hn = ATOMIC_INIT(0);	/* host_no for next new host */
 
 
 static void scsi_host_cls_release(struct device *dev)
@@ -369,7 +369,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
 	 * subtract one because we increment first then return, but we need to
 	 * know what the next host number was before increment
 	 */
-	shost->host_no = atomic_inc_return(&scsi_host_next_hn) - 1;
+	shost->host_no = atomic_inc_return_unchecked(&scsi_host_next_hn) - 1;
 	shost->dma_channel = 0xff;
 
 	/* These three are default values which can be overridden */
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 489e83b..193815b 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -701,10 +701,10 @@ static inline u32 next_command(struct ctlr_info *h, u8 q)
 	unsigned long flags;
 
 	if (h->transMethod & CFGTBL_Trans_io_accel1)
-		return h->access.command_completed(h, q);
+		return h->access->command_completed(h, q);
 
 	if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
-		return h->access.command_completed(h, q);
+		return h->access->command_completed(h, q);
 
 	if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
 		a = rq->head[rq->current_entry];
@@ -5455,7 +5455,7 @@ static void start_io(struct ctlr_info *h, unsigned long *flags)
 	while (!list_empty(&h->reqQ)) {
 		c = list_entry(h->reqQ.next, struct CommandList, list);
 		/* can't do anything if fifo is full */
-		if ((h->access.fifo_full(h))) {
+		if ((h->access->fifo_full(h))) {
 			h->fifo_recently_full = 1;
 			dev_warn(&h->pdev->dev, "fifo full\n");
 			break;
@@ -5477,7 +5477,7 @@ static void start_io(struct ctlr_info *h, unsigned long *flags)
 
 		/* Tell the controller execute command */
 		spin_unlock_irqrestore(&h->lock, *flags);
-		h->access.submit_command(h, c);
+		h->access->submit_command(h, c);
 		spin_lock_irqsave(&h->lock, *flags);
 	}
 }
@@ -5493,17 +5493,17 @@ static void lock_and_start_io(struct ctlr_info *h)
 
 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
 {
-	return h->access.command_completed(h, q);
+	return h->access->command_completed(h, q);
 }
 
 static inline bool interrupt_pending(struct ctlr_info *h)
 {
-	return h->access.intr_pending(h);
+	return h->access->intr_pending(h);
 }
 
 static inline long interrupt_not_for_us(struct ctlr_info *h)
 {
-	return (h->access.intr_pending(h) == 0) ||
+	return (h->access->intr_pending(h) == 0) ||
 		(h->interrupts_enabled == 0);
 }
 
@@ -6459,7 +6459,7 @@ static int hpsa_pci_init(struct ctlr_info *h)
 	if (prod_index < 0)
 		return -ENODEV;
 	h->product_name = products[prod_index].product_name;
-	h->access = *(products[prod_index].access);
+	h->access = products[prod_index].access;
 
 	pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
 			       PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
@@ -6781,7 +6781,7 @@ static void controller_lockup_detected(struct ctlr_info *h)
 	unsigned long flags;
 	u32 lockup_detected;
 
-	h->access.set_intr_mask(h, HPSA_INTR_OFF);
+	h->access->set_intr_mask(h, HPSA_INTR_OFF);
 	spin_lock_irqsave(&h->lock, flags);
 	lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
 	if (!lockup_detected) {
@@ -7022,7 +7022,7 @@ reinit_after_soft_reset:
 	}
 
 	/* make sure the board interrupts are off */
-	h->access.set_intr_mask(h, HPSA_INTR_OFF);
+	h->access->set_intr_mask(h, HPSA_INTR_OFF);
 
 	if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx))
 		goto clean2;
@@ -7057,7 +7057,7 @@ reinit_after_soft_reset:
 		 * fake ones to scoop up any residual completions.
 		 */
 		spin_lock_irqsave(&h->lock, flags);
-		h->access.set_intr_mask(h, HPSA_INTR_OFF);
+		h->access->set_intr_mask(h, HPSA_INTR_OFF);
 		spin_unlock_irqrestore(&h->lock, flags);
 		free_irqs(h);
 		rc = hpsa_request_irq(h, hpsa_msix_discard_completions,
@@ -7076,9 +7076,9 @@ reinit_after_soft_reset:
 		dev_info(&h->pdev->dev, "Board READY.\n");
 		dev_info(&h->pdev->dev,
 			"Waiting for stale completions to drain.\n");
-		h->access.set_intr_mask(h, HPSA_INTR_ON);
+		h->access->set_intr_mask(h, HPSA_INTR_ON);
 		msleep(10000);
-		h->access.set_intr_mask(h, HPSA_INTR_OFF);
+		h->access->set_intr_mask(h, HPSA_INTR_OFF);
 
 		rc = controller_reset_failed(h->cfgtable);
 		if (rc)
@@ -7104,7 +7104,7 @@ reinit_after_soft_reset:
 	h->drv_req_rescan = 0;
 
 	/* Turn the interrupts on so we can service requests */
-	h->access.set_intr_mask(h, HPSA_INTR_ON);
+	h->access->set_intr_mask(h, HPSA_INTR_ON);
 
 	hpsa_hba_inquiry(h);
 	hpsa_register_scsi(h);	/* hook ourselves into SCSI subsystem */
@@ -7169,7 +7169,7 @@ static void hpsa_shutdown(struct pci_dev *pdev)
 	 * To write all data in the battery backed cache to disks
 	 */
 	hpsa_flush_cache(h);
-	h->access.set_intr_mask(h, HPSA_INTR_OFF);
+	h->access->set_intr_mask(h, HPSA_INTR_OFF);
 	hpsa_free_irqs_and_disable_msix(h);
 }
 
@@ -7287,7 +7287,7 @@ static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
 				CFGTBL_Trans_enable_directed_msix |
 			(trans_support & (CFGTBL_Trans_io_accel1 |
 				CFGTBL_Trans_io_accel2));
-	struct access_method access = SA5_performant_access;
+	struct access_method *access = &SA5_performant_access;
 
 	/* This is a bit complicated.  There are 8 registers on
 	 * the controller which we write to to tell it 8 different
@@ -7329,7 +7329,7 @@ static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
 	 * perform the superfluous readl() after each command submission.
 	 */
 	if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
-		access = SA5_performant_access_no_read;
+		access = &SA5_performant_access_no_read;
 
 	/* Controller spec: zero out this buffer. */
 	for (i = 0; i < h->nreply_queues; i++)
@@ -7359,12 +7359,12 @@ static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
 	 * enable outbound interrupt coalescing in accelerator mode;
 	 */
 	if (trans_support & CFGTBL_Trans_io_accel1) {
-		access = SA5_ioaccel_mode1_access;
+		access = &SA5_ioaccel_mode1_access;
 		writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
 		writel(4, &h->cfgtable->HostWrite.CoalIntCount);
 	} else {
 		if (trans_support & CFGTBL_Trans_io_accel2) {
-			access = SA5_ioaccel_mode2_access;
+			access = &SA5_ioaccel_mode2_access;
 			writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
 			writel(4, &h->cfgtable->HostWrite.CoalIntCount);
 		}
diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
index 24472ce..8782caf 100644
--- a/drivers/scsi/hpsa.h
+++ b/drivers/scsi/hpsa.h
@@ -127,7 +127,7 @@ struct ctlr_info {
 	unsigned int msix_vector;
 	unsigned int msi_vector;
 	int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */
-	struct access_method access;
+	struct access_method *access;
 	char hba_mode_enabled;
 
 	/* queue and queue Info */
@@ -536,43 +536,43 @@ static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q)
 }
 
 static struct access_method SA5_access = {
-	SA5_submit_command,
-	SA5_intr_mask,
-	SA5_fifo_full,
-	SA5_intr_pending,
-	SA5_completed,
+	.submit_command = SA5_submit_command,
+	.set_intr_mask = SA5_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_intr_pending,
+	.command_completed = SA5_completed,
 };
 
 static struct access_method SA5_ioaccel_mode1_access = {
-	SA5_submit_command,
-	SA5_performant_intr_mask,
-	SA5_fifo_full,
-	SA5_ioaccel_mode1_intr_pending,
-	SA5_ioaccel_mode1_completed,
+	.submit_command = SA5_submit_command,
+	.set_intr_mask = SA5_performant_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_ioaccel_mode1_intr_pending,
+	.command_completed = SA5_ioaccel_mode1_completed,
 };
 
 static struct access_method SA5_ioaccel_mode2_access = {
-	SA5_submit_command_ioaccel2,
-	SA5_performant_intr_mask,
-	SA5_fifo_full,
-	SA5_performant_intr_pending,
-	SA5_performant_completed,
+	.submit_command = SA5_submit_command_ioaccel2,
+	.set_intr_mask = SA5_performant_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_performant_intr_pending,
+	.command_completed = SA5_performant_completed,
 };
 
 static struct access_method SA5_performant_access = {
-	SA5_submit_command,
-	SA5_performant_intr_mask,
-	SA5_fifo_full,
-	SA5_performant_intr_pending,
-	SA5_performant_completed,
+	.submit_command = SA5_submit_command,
+	.set_intr_mask = SA5_performant_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_performant_intr_pending,
+	.command_completed = SA5_performant_completed,
 };
 
 static struct access_method SA5_performant_access_no_read = {
-	SA5_submit_command_no_read,
-	SA5_performant_intr_mask,
-	SA5_fifo_full,
-	SA5_performant_intr_pending,
-	SA5_performant_completed,
+	.submit_command = SA5_submit_command_no_read,
+	.set_intr_mask = SA5_performant_intr_mask,
+	.fifo_full = SA5_fifo_full,
+	.intr_pending = SA5_performant_intr_pending,
+	.command_completed = SA5_performant_completed,
 };
 
 struct board_type {
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 1b3a094..068e683 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -101,12 +101,12 @@ struct fc_exch_mgr {
 	u16		pool_max_index;
 
 	struct {
-		atomic_t no_free_exch;
-		atomic_t no_free_exch_xid;
-		atomic_t xid_not_found;
-		atomic_t xid_busy;
-		atomic_t seq_not_found;
-		atomic_t non_bls_resp;
+		atomic_unchecked_t no_free_exch;
+		atomic_unchecked_t no_free_exch_xid;
+		atomic_unchecked_t xid_not_found;
+		atomic_unchecked_t xid_busy;
+		atomic_unchecked_t seq_not_found;
+		atomic_unchecked_t non_bls_resp;
 	} stats;
 };
 
@@ -811,7 +811,7 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport,
 	/* allocate memory for exchange */
 	ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC);
 	if (!ep) {
-		atomic_inc(&mp->stats.no_free_exch);
+		atomic_inc_unchecked(&mp->stats.no_free_exch);
 		goto out;
 	}
 	memset(ep, 0, sizeof(*ep));
@@ -874,7 +874,7 @@ out:
 	return ep;
 err:
 	spin_unlock_bh(&pool->lock);
-	atomic_inc(&mp->stats.no_free_exch_xid);
+	atomic_inc_unchecked(&mp->stats.no_free_exch_xid);
 	mempool_free(ep, mp->ep_pool);
 	return NULL;
 }
@@ -1023,7 +1023,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
 		xid = ntohs(fh->fh_ox_id);	/* we originated exch */
 		ep = fc_exch_find(mp, xid);
 		if (!ep) {
-			atomic_inc(&mp->stats.xid_not_found);
+			atomic_inc_unchecked(&mp->stats.xid_not_found);
 			reject = FC_RJT_OX_ID;
 			goto out;
 		}
@@ -1053,7 +1053,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
 		ep = fc_exch_find(mp, xid);
 		if ((f_ctl & FC_FC_FIRST_SEQ) && fc_sof_is_init(fr_sof(fp))) {
 			if (ep) {
-				atomic_inc(&mp->stats.xid_busy);
+				atomic_inc_unchecked(&mp->stats.xid_busy);
 				reject = FC_RJT_RX_ID;
 				goto rel;
 			}
@@ -1064,7 +1064,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
 			}
 			xid = ep->xid;	/* get our XID */
 		} else if (!ep) {
-			atomic_inc(&mp->stats.xid_not_found);
+			atomic_inc_unchecked(&mp->stats.xid_not_found);
 			reject = FC_RJT_RX_ID;	/* XID not found */
 			goto out;
 		}
@@ -1082,7 +1082,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
 	} else {
 		sp = &ep->seq;
 		if (sp->id != fh->fh_seq_id) {
-			atomic_inc(&mp->stats.seq_not_found);
+			atomic_inc_unchecked(&mp->stats.seq_not_found);
 			if (f_ctl & FC_FC_END_SEQ) {
 				/*
 				 * Update sequence_id based on incoming last
@@ -1533,22 +1533,22 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
 
 	ep = fc_exch_find(mp, ntohs(fh->fh_ox_id));
 	if (!ep) {
-		atomic_inc(&mp->stats.xid_not_found);
+		atomic_inc_unchecked(&mp->stats.xid_not_found);
 		goto out;
 	}
 	if (ep->esb_stat & ESB_ST_COMPLETE) {
-		atomic_inc(&mp->stats.xid_not_found);
+		atomic_inc_unchecked(&mp->stats.xid_not_found);
 		goto rel;
 	}
 	if (ep->rxid == FC_XID_UNKNOWN)
 		ep->rxid = ntohs(fh->fh_rx_id);
 	if (ep->sid != 0 && ep->sid != ntoh24(fh->fh_d_id)) {
-		atomic_inc(&mp->stats.xid_not_found);
+		atomic_inc_unchecked(&mp->stats.xid_not_found);
 		goto rel;
 	}
 	if (ep->did != ntoh24(fh->fh_s_id) &&
 	    ep->did != FC_FID_FLOGI) {
-		atomic_inc(&mp->stats.xid_not_found);
+		atomic_inc_unchecked(&mp->stats.xid_not_found);
 		goto rel;
 	}
 	sof = fr_sof(fp);
@@ -1557,7 +1557,7 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
 		sp->ssb_stat |= SSB_ST_RESP;
 		sp->id = fh->fh_seq_id;
 	} else if (sp->id != fh->fh_seq_id) {
-		atomic_inc(&mp->stats.seq_not_found);
+		atomic_inc_unchecked(&mp->stats.seq_not_found);
 		goto rel;
 	}
 
@@ -1619,9 +1619,9 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
 	sp = fc_seq_lookup_orig(mp, fp);	/* doesn't hold sequence */
 
 	if (!sp)
-		atomic_inc(&mp->stats.xid_not_found);
+		atomic_inc_unchecked(&mp->stats.xid_not_found);
 	else
-		atomic_inc(&mp->stats.non_bls_resp);
+		atomic_inc_unchecked(&mp->stats.non_bls_resp);
 
 	fc_frame_free(fp);
 }
@@ -2261,13 +2261,13 @@ void fc_exch_update_stats(struct fc_lport *lport)
 
 	list_for_each_entry(ema, &lport->ema_list, ema_list) {
 		mp = ema->mp;
-		st->fc_no_free_exch += atomic_read(&mp->stats.no_free_exch);
+		st->fc_no_free_exch += atomic_read_unchecked(&mp->stats.no_free_exch);
 		st->fc_no_free_exch_xid +=
-				atomic_read(&mp->stats.no_free_exch_xid);
-		st->fc_xid_not_found += atomic_read(&mp->stats.xid_not_found);
-		st->fc_xid_busy += atomic_read(&mp->stats.xid_busy);
-		st->fc_seq_not_found += atomic_read(&mp->stats.seq_not_found);
-		st->fc_non_bls_resp += atomic_read(&mp->stats.non_bls_resp);
+				atomic_read_unchecked(&mp->stats.no_free_exch_xid);
+		st->fc_xid_not_found += atomic_read_unchecked(&mp->stats.xid_not_found);
+		st->fc_xid_busy += atomic_read_unchecked(&mp->stats.xid_busy);
+		st->fc_seq_not_found += atomic_read_unchecked(&mp->stats.seq_not_found);
+		st->fc_non_bls_resp += atomic_read_unchecked(&mp->stats.non_bls_resp);
 	}
 }
 EXPORT_SYMBOL(fc_exch_update_stats);
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 766098a..1c6c971 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -554,7 +554,7 @@ static struct ata_port_operations sas_sata_ops = {
 	.postreset		= ata_std_postreset,
 	.error_handler		= ata_std_error_handler,
 	.post_internal_cmd	= sas_ata_post_internal,
-	.qc_defer               = ata_std_qc_defer,
+	.qc_defer		= ata_std_qc_defer,
 	.qc_prep		= ata_noop_qc_prep,
 	.qc_issue		= sas_ata_qc_issue,
 	.qc_fill_rtf		= sas_ata_qc_fill_rtf,
diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
index 434e903..5a4a79b 100644
--- a/drivers/scsi/lpfc/lpfc.h
+++ b/drivers/scsi/lpfc/lpfc.h
@@ -430,7 +430,7 @@ struct lpfc_vport {
 	struct dentry *debug_nodelist;
 	struct dentry *vport_debugfs_root;
 	struct lpfc_debugfs_trc *disc_trc;
-	atomic_t disc_trc_cnt;
+	atomic_unchecked_t disc_trc_cnt;
 #endif
 	uint8_t stat_data_enabled;
 	uint8_t stat_data_blocked;
@@ -880,8 +880,8 @@ struct lpfc_hba {
 	struct timer_list fabric_block_timer;
 	unsigned long bit_flags;
 #define	FABRIC_COMANDS_BLOCKED	0
-	atomic_t num_rsrc_err;
-	atomic_t num_cmd_success;
+	atomic_unchecked_t num_rsrc_err;
+	atomic_unchecked_t num_cmd_success;
 	unsigned long last_rsrc_error_time;
 	unsigned long last_ramp_down_time;
 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
@@ -916,7 +916,7 @@ struct lpfc_hba {
 
 	struct dentry *debug_slow_ring_trc;
 	struct lpfc_debugfs_trc *slow_ring_trc;
-	atomic_t slow_ring_trc_cnt;
+	atomic_unchecked_t slow_ring_trc_cnt;
 	/* iDiag debugfs sub-directory */
 	struct dentry *idiag_root;
 	struct dentry *idiag_pci_cfg;
diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index b0aedce..89c6ca6 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -106,7 +106,7 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
 
 #include <linux/debugfs.h>
 
-static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
+static atomic_unchecked_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
 static unsigned long lpfc_debugfs_start_time = 0L;
 
 /* iDiag */
@@ -147,7 +147,7 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
 	lpfc_debugfs_enable = 0;
 
 	len = 0;
-	index = (atomic_read(&vport->disc_trc_cnt) + 1) &
+	index = (atomic_read_unchecked(&vport->disc_trc_cnt) + 1) &
 		(lpfc_debugfs_max_disc_trc - 1);
 	for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
 		dtp = vport->disc_trc + i;
@@ -213,7 +213,7 @@ lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
 	lpfc_debugfs_enable = 0;
 
 	len = 0;
-	index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
+	index = (atomic_read_unchecked(&phba->slow_ring_trc_cnt) + 1) &
 		(lpfc_debugfs_max_slow_ring_trc - 1);
 	for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
 		dtp = phba->slow_ring_trc + i;
@@ -646,14 +646,14 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
 		!vport || !vport->disc_trc)
 		return;
 
-	index = atomic_inc_return(&vport->disc_trc_cnt) &
+	index = atomic_inc_return_unchecked(&vport->disc_trc_cnt) &
 		(lpfc_debugfs_max_disc_trc - 1);
 	dtp = vport->disc_trc + index;
 	dtp->fmt = fmt;
 	dtp->data1 = data1;
 	dtp->data2 = data2;
 	dtp->data3 = data3;
-	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
+	dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt);
 	dtp->jif = jiffies;
 #endif
 	return;
@@ -684,14 +684,14 @@ lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
 		!phba || !phba->slow_ring_trc)
 		return;
 
-	index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
+	index = atomic_inc_return_unchecked(&phba->slow_ring_trc_cnt) &
 		(lpfc_debugfs_max_slow_ring_trc - 1);
 	dtp = phba->slow_ring_trc + index;
 	dtp->fmt = fmt;
 	dtp->data1 = data1;
 	dtp->data2 = data2;
 	dtp->data3 = data3;
-	dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
+	dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt);
 	dtp->jif = jiffies;
 #endif
 	return;
@@ -4268,7 +4268,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
 						 "slow_ring buffer\n");
 				goto debug_failed;
 			}
-			atomic_set(&phba->slow_ring_trc_cnt, 0);
+			atomic_set_unchecked(&phba->slow_ring_trc_cnt, 0);
 			memset(phba->slow_ring_trc, 0,
 				(sizeof(struct lpfc_debugfs_trc) *
 				lpfc_debugfs_max_slow_ring_trc));
@@ -4314,7 +4314,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
 				 "buffer\n");
 		goto debug_failed;
 	}
-	atomic_set(&vport->disc_trc_cnt, 0);
+	atomic_set_unchecked(&vport->disc_trc_cnt, 0);
 
 	snprintf(name, sizeof(name), "discovery_trace");
 	vport->debug_disc_trc =
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index 06f9a5b..82812092 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -11296,8 +11296,10 @@ lpfc_init(void)
 			"misc_register returned with status %d", error);
 
 	if (lpfc_enable_npiv) {
-		lpfc_transport_functions.vport_create = lpfc_vport_create;
-		lpfc_transport_functions.vport_delete = lpfc_vport_delete;
+		pax_open_kernel();
+		*(void **)&lpfc_transport_functions.vport_create = lpfc_vport_create;
+		*(void **)&lpfc_transport_functions.vport_delete = lpfc_vport_delete;
+		pax_close_kernel();
 	}
 	lpfc_transport_template =
 				fc_attach_transport(&lpfc_transport_functions);
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 2df11da..e660a2c 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -382,7 +382,7 @@ lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
 	uint32_t evt_posted;
 
 	spin_lock_irqsave(&phba->hbalock, flags);
-	atomic_inc(&phba->num_rsrc_err);
+	atomic_inc_unchecked(&phba->num_rsrc_err);
 	phba->last_rsrc_error_time = jiffies;
 
 	if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) {
@@ -423,8 +423,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
 	unsigned long num_rsrc_err, num_cmd_success;
 	int i;
 
-	num_rsrc_err = atomic_read(&phba->num_rsrc_err);
-	num_cmd_success = atomic_read(&phba->num_cmd_success);
+	num_rsrc_err = atomic_read_unchecked(&phba->num_rsrc_err);
+	num_cmd_success = atomic_read_unchecked(&phba->num_cmd_success);
 
 	/*
 	 * The error and success command counters are global per
@@ -452,8 +452,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
 			}
 		}
 	lpfc_destroy_vport_work_array(phba, vports);
-	atomic_set(&phba->num_rsrc_err, 0);
-	atomic_set(&phba->num_cmd_success, 0);
+	atomic_set_unchecked(&phba->num_rsrc_err, 0);
+	atomic_set_unchecked(&phba->num_cmd_success, 0);
 }
 
 /**
diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
index 5055f92..376cd98 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
@@ -1557,7 +1557,7 @@ _scsih_get_resync(struct device *dev)
 {
 	struct scsi_device *sdev = to_scsi_device(dev);
 	struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
-	static struct _raid_device *raid_device;
+	struct _raid_device *raid_device;
 	unsigned long flags;
 	Mpi2RaidVolPage0_t vol_pg0;
 	Mpi2ConfigReply_t mpi_reply;
@@ -1609,7 +1609,7 @@ _scsih_get_state(struct device *dev)
 {
 	struct scsi_device *sdev = to_scsi_device(dev);
 	struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
-	static struct _raid_device *raid_device;
+	struct _raid_device *raid_device;
 	unsigned long flags;
 	Mpi2RaidVolPage0_t vol_pg0;
 	Mpi2ConfigReply_t mpi_reply;
@@ -6631,7 +6631,7 @@ _scsih_sas_ir_operation_status_event(struct MPT2SAS_ADAPTER *ioc,
     struct fw_event_work *fw_event)
 {
 	Mpi2EventDataIrOperationStatus_t *event_data = fw_event->event_data;
-	static struct _raid_device *raid_device;
+	struct _raid_device *raid_device;
 	unsigned long flags;
 	u16 handle;
 
@@ -7102,7 +7102,7 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
 	u64 sas_address;
 	struct _sas_device *sas_device;
 	struct _sas_node *expander_device;
-	static struct _raid_device *raid_device;
+	struct _raid_device *raid_device;
 	u8 retry_count;
 	unsigned long flags;
 
diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
index be8ce54..94ed33a 100644
--- a/drivers/scsi/pmcraid.c
+++ b/drivers/scsi/pmcraid.c
@@ -200,8 +200,8 @@ static int pmcraid_slave_alloc(struct scsi_device *scsi_dev)
 		res->scsi_dev = scsi_dev;
 		scsi_dev->hostdata = res;
 		res->change_detected = 0;
-		atomic_set(&res->read_failures, 0);
-		atomic_set(&res->write_failures, 0);
+		atomic_set_unchecked(&res->read_failures, 0);
+		atomic_set_unchecked(&res->write_failures, 0);
 		rc = 0;
 	}
 	spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
@@ -2687,9 +2687,9 @@ static int pmcraid_error_handler(struct pmcraid_cmd *cmd)
 
 	/* If this was a SCSI read/write command keep count of errors */
 	if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD)
-		atomic_inc(&res->read_failures);
+		atomic_inc_unchecked(&res->read_failures);
 	else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD)
-		atomic_inc(&res->write_failures);
+		atomic_inc_unchecked(&res->write_failures);
 
 	if (!RES_IS_GSCSI(res->cfg_entry) &&
 		masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) {
@@ -3545,7 +3545,7 @@ static int pmcraid_queuecommand_lck(
 	 * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses
 	 * hrrq_id assigned here in queuecommand
 	 */
-	ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
+	ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) %
 			  pinstance->num_hrrq;
 	cmd->cmd_done = pmcraid_io_done;
 
@@ -3857,7 +3857,7 @@ static long pmcraid_ioctl_passthrough(
 	 * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses
 	 * hrrq_id assigned here in queuecommand
 	 */
-	ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
+	ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) %
 			  pinstance->num_hrrq;
 
 	if (request_size) {
@@ -4495,7 +4495,7 @@ static void pmcraid_worker_function(struct work_struct *workp)
 
 	pinstance = container_of(workp, struct pmcraid_instance, worker_q);
 	/* add resources only after host is added into system */
-	if (!atomic_read(&pinstance->expose_resources))
+	if (!atomic_read_unchecked(&pinstance->expose_resources))
 		return;
 
 	fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
@@ -5322,8 +5322,8 @@ static int pmcraid_init_instance(struct pci_dev *pdev, struct Scsi_Host *host,
 	init_waitqueue_head(&pinstance->reset_wait_q);
 
 	atomic_set(&pinstance->outstanding_cmds, 0);
-	atomic_set(&pinstance->last_message_id, 0);
-	atomic_set(&pinstance->expose_resources, 0);
+	atomic_set_unchecked(&pinstance->last_message_id, 0);
+	atomic_set_unchecked(&pinstance->expose_resources, 0);
 
 	INIT_LIST_HEAD(&pinstance->free_res_q);
 	INIT_LIST_HEAD(&pinstance->used_res_q);
@@ -6036,7 +6036,7 @@ static int pmcraid_probe(struct pci_dev *pdev,
 	/* Schedule worker thread to handle CCN and take care of adding and
 	 * removing devices to OS
 	 */
-	atomic_set(&pinstance->expose_resources, 1);
+	atomic_set_unchecked(&pinstance->expose_resources, 1);
 	schedule_work(&pinstance->worker_q);
 	return rc;
 
diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h
index e1d150f..6c6df44 100644
--- a/drivers/scsi/pmcraid.h
+++ b/drivers/scsi/pmcraid.h
@@ -748,7 +748,7 @@ struct pmcraid_instance {
 	struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS];
 
 	/* Message id as filled in last fired IOARCB, used to identify HRRQ */
-	atomic_t last_message_id;
+	atomic_unchecked_t last_message_id;
 
 	/* configuration table */
 	struct pmcraid_config_table *cfg_table;
@@ -777,7 +777,7 @@ struct pmcraid_instance {
 	atomic_t outstanding_cmds;
 
 	/* should add/delete resources to mid-layer now ?*/
-	atomic_t expose_resources;
+	atomic_unchecked_t expose_resources;
 
 
 
@@ -813,8 +813,8 @@ struct pmcraid_resource_entry {
 		struct pmcraid_config_table_entry_ext cfg_entry_ext;
 	};
 	struct scsi_device *scsi_dev;	/* Link scsi_device structure */
-	atomic_t read_failures;		/* count of failed READ commands */
-	atomic_t write_failures;	/* count of failed WRITE commands */
+	atomic_unchecked_t read_failures;	/* count of failed READ commands */
+	atomic_unchecked_t write_failures;	/* count of failed WRITE commands */
 
 	/* To indicate add/delete/modify during CCN */
 	u8 change_detected;
diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 16fe519..3b1ec82 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -2188,7 +2188,7 @@ qla24xx_vport_disable(struct fc_vport *fc_vport, bool disable)
 	return 0;
 }
 
-struct fc_function_template qla2xxx_transport_functions = {
+fc_function_template_no_const qla2xxx_transport_functions = {
 
 	.show_host_node_name = 1,
 	.show_host_port_name = 1,
@@ -2236,7 +2236,7 @@ struct fc_function_template qla2xxx_transport_functions = {
 	.bsg_timeout = qla24xx_bsg_timeout,
 };
 
-struct fc_function_template qla2xxx_transport_vport_functions = {
+fc_function_template_no_const qla2xxx_transport_vport_functions = {
 
 	.show_host_node_name = 1,
 	.show_host_port_name = 1,
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index d48dea8..0845f78 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -569,8 +569,8 @@ extern void qla2x00_get_sym_node_name(scsi_qla_host_t *, uint8_t *);
 struct device_attribute;
 extern struct device_attribute *qla2x00_host_attrs[];
 struct fc_function_template;
-extern struct fc_function_template qla2xxx_transport_functions;
-extern struct fc_function_template qla2xxx_transport_vport_functions;
+extern fc_function_template_no_const qla2xxx_transport_functions;
+extern fc_function_template_no_const qla2xxx_transport_vport_functions;
 extern void qla2x00_alloc_sysfs_attr(scsi_qla_host_t *);
 extern void qla2x00_free_sysfs_attr(scsi_qla_host_t *, bool);
 extern void qla2x00_init_host_attr(scsi_qla_host_t *);
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index d96bfb5..d7afe90 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1490,8 +1490,10 @@ qla2x00_config_dma_addressing(struct qla_hw_data *ha)
 		    !pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
 			/* Ok, a 64bit DMA mask is applicable. */
 			ha->flags.enable_64bit_addressing = 1;
-			ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
-			ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
+			pax_open_kernel();
+			*(void **)&ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
+			*(void **)&ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
+			pax_close_kernel();
 			return;
 		}
 	}
diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
index 8f6d0fb..1b21097 100644
--- a/drivers/scsi/qla4xxx/ql4_def.h
+++ b/drivers/scsi/qla4xxx/ql4_def.h
@@ -305,7 +305,7 @@ struct ddb_entry {
 					   * (4000 only) */
 	atomic_t relogin_timer;		  /* Max Time to wait for
 					   * relogin to complete */
-	atomic_t relogin_retry_count;	  /* Num of times relogin has been
+	atomic_unchecked_t relogin_retry_count;	  /* Num of times relogin has been
 					   * retried */
 	uint32_t default_time2wait;	  /* Default Min time between
 					   * relogins (+aens) */
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 3202063..f9f0ff6 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -4494,12 +4494,12 @@ static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
 		 */
 		if (!iscsi_is_session_online(cls_sess)) {
 			/* Reset retry relogin timer */
-			atomic_inc(&ddb_entry->relogin_retry_count);
+			atomic_inc_unchecked(&ddb_entry->relogin_retry_count);
 			DEBUG2(ql4_printk(KERN_INFO, ha,
 				"%s: index[%d] relogin timed out-retrying"
 				" relogin (%d), retry (%d)\n", __func__,
 				ddb_entry->fw_ddb_index,
-				atomic_read(&ddb_entry->relogin_retry_count),
+				atomic_read_unchecked(&ddb_entry->relogin_retry_count),
 				ddb_entry->default_time2wait + 4));
 			set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
 			atomic_set(&ddb_entry->retry_relogin_timer,
@@ -6607,7 +6607,7 @@ static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
 
 	atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
 	atomic_set(&ddb_entry->relogin_timer, 0);
-	atomic_set(&ddb_entry->relogin_retry_count, 0);
+	atomic_set_unchecked(&ddb_entry->relogin_retry_count, 0);
 	def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
 	ddb_entry->default_relogin_timeout =
 		(def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 769be4d..371fc61 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -648,7 +648,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
 	struct Scsi_Host *host = cmd->device->host;
 	int rtn = 0;
 
-	atomic_inc(&cmd->device->iorequest_cnt);
+	atomic_inc_unchecked(&cmd->device->iorequest_cnt);
 
 	/* check if the device is still usable */
 	if (unlikely(cmd->device->sdev_state == SDEV_DEL)) {
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 3f50dfc..86af487 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1423,7 +1423,7 @@ static void scsi_kill_request(struct request *req, struct request_queue *q)
 	shost = sdev->host;
 	scsi_init_cmd_errh(cmd);
 	cmd->result = DID_NO_CONNECT << 16;
-	atomic_inc(&cmd->device->iorequest_cnt);
+	atomic_inc_unchecked(&cmd->device->iorequest_cnt);
 
 	/*
 	 * SCSI request completion path will do scsi_device_unbusy(),
@@ -1449,9 +1449,9 @@ static void scsi_softirq_done(struct request *rq)
 
 	INIT_LIST_HEAD(&cmd->eh_entry);
 
-	atomic_inc(&cmd->device->iodone_cnt);
+	atomic_inc_unchecked(&cmd->device->iodone_cnt);
 	if (cmd->result)
-		atomic_inc(&cmd->device->ioerr_cnt);
+		atomic_inc_unchecked(&cmd->device->ioerr_cnt);
 
 	disposition = scsi_decide_disposition(cmd);
 	if (disposition != SUCCESS &&
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 074e8cc..f612e5c 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -780,7 +780,7 @@ show_iostat_##field(struct device *dev, struct device_attribute *attr,	\
 		    char *buf)						\
 {									\
 	struct scsi_device *sdev = to_scsi_device(dev);			\
-	unsigned long long count = atomic_read(&sdev->field);		\
+	unsigned long long count = atomic_read_unchecked(&sdev->field);	\
 	return snprintf(buf, 20, "0x%llx\n", count);			\
 }									\
 static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c
index e51add0..1e06a96 100644
--- a/drivers/scsi/scsi_tgt_lib.c
+++ b/drivers/scsi/scsi_tgt_lib.c
@@ -363,7 +363,7 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd,
 	int err;
 
 	dprintk("%lx %u\n", uaddr, len);
-	err = blk_rq_map_user(q, rq, NULL, (void *)uaddr, len, GFP_KERNEL);
+	err = blk_rq_map_user(q, rq, NULL, (void __user *)uaddr, len, GFP_KERNEL);
 	if (err) {
 		/*
 		 * TODO: need to fixup sg_tablesize, max_segment_size,
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index 521f583..6b15966 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -498,7 +498,7 @@ static DECLARE_TRANSPORT_CLASS(fc_vport_class,
  * Netlink Infrastructure
  */
 
-static atomic_t fc_event_seq;
+static atomic_unchecked_t fc_event_seq;
 
 /**
  * fc_get_event_number - Obtain the next sequential FC event number
@@ -511,7 +511,7 @@ static atomic_t fc_event_seq;
 u32
 fc_get_event_number(void)
 {
-	return atomic_add_return(1, &fc_event_seq);
+	return atomic_add_return_unchecked(1, &fc_event_seq);
 }
 EXPORT_SYMBOL(fc_get_event_number);
 
@@ -655,7 +655,7 @@ static __init int fc_transport_init(void)
 {
 	int error;
 
-	atomic_set(&fc_event_seq, 0);
+	atomic_set_unchecked(&fc_event_seq, 0);
 
 	error = transport_class_register(&fc_host_class);
 	if (error)
@@ -845,7 +845,7 @@ static int fc_str_to_dev_loss(const char *buf, unsigned long *val)
 	char *cp;
 
 	*val = simple_strtoul(buf, &cp, 0);
-	if ((*cp && (*cp != '\n')) || (*val < 0))
+	if (*cp && (*cp != '\n'))
 		return -EINVAL;
 	/*
 	 * Check for overflow; dev_loss_tmo is u32
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 0102a2d..cc3f8e9 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -79,7 +79,7 @@ struct iscsi_internal {
 	struct transport_container session_cont;
 };
 
-static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
+static atomic_unchecked_t iscsi_session_nr; /* sysfs session id for next new session */
 static struct workqueue_struct *iscsi_eh_timer_workq;
 
 static DEFINE_IDA(iscsi_sess_ida);
@@ -2071,7 +2071,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
 	int err;
 
 	ihost = shost->shost_data;
-	session->sid = atomic_add_return(1, &iscsi_session_nr);
+	session->sid = atomic_add_return_unchecked(1, &iscsi_session_nr);
 
 	if (target_id == ISCSI_MAX_TARGET) {
 		id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL);
@@ -4511,7 +4511,7 @@ static __init int iscsi_transport_init(void)
 	printk(KERN_INFO "Loading iSCSI transport class v%s.\n",
 		ISCSI_TRANSPORT_VERSION);
 
-	atomic_set(&iscsi_session_nr, 0);
+	atomic_set_unchecked(&iscsi_session_nr, 0);
 
 	err = class_register(&iscsi_transport_class);
 	if (err)
diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
index a0c5bfd..b94db1e 100644
--- a/drivers/scsi/scsi_transport_srp.c
+++ b/drivers/scsi/scsi_transport_srp.c
@@ -36,7 +36,7 @@
 #include "scsi_transport_srp_internal.h"
 
 struct srp_host_attrs {
-	atomic_t next_port_id;
+	atomic_unchecked_t next_port_id;
 };
 #define to_srp_host_attrs(host)	((struct srp_host_attrs *)(host)->shost_data)
 
@@ -101,7 +101,7 @@ static int srp_host_setup(struct transport_container *tc, struct device *dev,
 	struct Scsi_Host *shost = dev_to_shost(dev);
 	struct srp_host_attrs *srp_host = to_srp_host_attrs(shost);
 
-	atomic_set(&srp_host->next_port_id, 0);
+	atomic_set_unchecked(&srp_host->next_port_id, 0);
 	return 0;
 }
 
@@ -735,7 +735,7 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
 			  rport_fast_io_fail_timedout);
 	INIT_DELAYED_WORK(&rport->dev_loss_work, rport_dev_loss_timedout);
 
-	id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id);
+	id = atomic_inc_return_unchecked(&to_srp_host_attrs(shost)->next_port_id);
 	dev_set_name(&rport->dev, "port-%d:%d", shost->host_no, id);
 
 	transport_setup_device(&rport->dev);
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index ed2e99e..28cf52b 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -2959,7 +2959,7 @@ static int sd_probe(struct device *dev)
 	sdkp->disk = gd;
 	sdkp->index = index;
 	atomic_set(&sdkp->openers, 0);
-	atomic_set(&sdkp->device->ioerr_cnt, 0);
+	atomic_set_unchecked(&sdkp->device->ioerr_cnt, 0);
 
 	if (!sdp->request_queue->rq_timeout) {
 		if (sdp->type != TYPE_MOD)
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 53268aab..17c2764 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1102,7 +1102,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
 				       sdp->disk->disk_name,
 				       MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
 				       NULL,
-				       (char *)arg);
+				       (char __user *)arg);
 	case BLKTRACESTART:
 		return blk_trace_startstop(sdp->device->request_queue, 1);
 	case BLKTRACESTOP:
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index d4f9670..d37b662 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2204,7 +2204,7 @@ int spi_bus_unlock(struct spi_master *master)
 EXPORT_SYMBOL_GPL(spi_bus_unlock);
 
 /* portable code must never pass more than 32 bytes */
-#define	SPI_BUFSIZ	max(32, SMP_CACHE_BYTES)
+#define	SPI_BUFSIZ	max(32UL, SMP_CACHE_BYTES)
 
 static u8	*buf;
 
diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c
index c341ac1..bf9799f 100644
--- a/drivers/staging/android/timed_output.c
+++ b/drivers/staging/android/timed_output.c
@@ -25,7 +25,7 @@
 #include "timed_output.h"
 
 static struct class *timed_output_class;
-static atomic_t device_count;
+static atomic_unchecked_t device_count;
 
 static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
 			   char *buf)
@@ -63,7 +63,7 @@ static int create_timed_output_class(void)
 		timed_output_class = class_create(THIS_MODULE, "timed_output");
 		if (IS_ERR(timed_output_class))
 			return PTR_ERR(timed_output_class);
-		atomic_set(&device_count, 0);
+		atomic_set_unchecked(&device_count, 0);
 		timed_output_class->dev_groups = timed_output_groups;
 	}
 
@@ -81,7 +81,7 @@ int timed_output_dev_register(struct timed_output_dev *tdev)
 	if (ret < 0)
 		return ret;
 
-	tdev->index = atomic_inc_return(&device_count);
+	tdev->index = atomic_inc_return_unchecked(&device_count);
 	tdev->dev = device_create(timed_output_class, NULL,
 		MKDEV(0, tdev->index), NULL, "%s", tdev->name);
 	if (IS_ERR(tdev->dev))
diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c
index fe47cd3..19a1bd1 100644
--- a/drivers/staging/gdm724x/gdm_tty.c
+++ b/drivers/staging/gdm724x/gdm_tty.c
@@ -44,7 +44,7 @@
 #define gdm_tty_send_control(n, r, v, d, l) (\
 	n->tty_dev->send_control(n->tty_dev->priv_dev, r, v, d, l))
 
-#define GDM_TTY_READY(gdm) (gdm && gdm->tty_dev && gdm->port.count)
+#define GDM_TTY_READY(gdm) (gdm && gdm->tty_dev && atomic_read(&gdm->port.count))
 
 static struct tty_driver *gdm_driver[TTY_MAX_COUNT];
 static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index def8280..e3fd96a 100644
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -355,7 +355,7 @@ int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
 	if (imxdrm->pipes >= MAX_CRTC)
 		return -EINVAL;
 
-	if (imxdrm->drm->open_count)
+	if (local_read(&imxdrm->drm->open_count))
 		return -EBUSY;
 
 	imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL);
diff --git a/drivers/staging/lustre/lnet/selftest/brw_test.c b/drivers/staging/lustre/lnet/selftest/brw_test.c
index 3f8020c..649fded 100644
--- a/drivers/staging/lustre/lnet/selftest/brw_test.c
+++ b/drivers/staging/lustre/lnet/selftest/brw_test.c
@@ -488,13 +488,11 @@ brw_server_handle(struct srpc_server_rpc *rpc)
 	return 0;
 }
 
-sfw_test_client_ops_t brw_test_client;
-void brw_init_test_client(void)
-{
-	brw_test_client.tso_init       = brw_client_init;
-	brw_test_client.tso_fini       = brw_client_fini;
-	brw_test_client.tso_prep_rpc   = brw_client_prep_rpc;
-	brw_test_client.tso_done_rpc   = brw_client_done_rpc;
+sfw_test_client_ops_t brw_test_client = {
+	.tso_init       = brw_client_init,
+	.tso_fini       = brw_client_fini,
+	.tso_prep_rpc   = brw_client_prep_rpc,
+	.tso_done_rpc   = brw_client_done_rpc,
 };
 
 srpc_service_t brw_test_service;
diff --git a/drivers/staging/lustre/lnet/selftest/framework.c b/drivers/staging/lustre/lnet/selftest/framework.c
index 050723a..fa6fdf1 100644
--- a/drivers/staging/lustre/lnet/selftest/framework.c
+++ b/drivers/staging/lustre/lnet/selftest/framework.c
@@ -1635,12 +1635,10 @@ static srpc_service_t sfw_services[] =
 
 extern sfw_test_client_ops_t ping_test_client;
 extern srpc_service_t	ping_test_service;
-extern void ping_init_test_client(void);
 extern void ping_init_test_service(void);
 
 extern sfw_test_client_ops_t brw_test_client;
 extern srpc_service_t	brw_test_service;
-extern void brw_init_test_client(void);
 extern void brw_init_test_service(void);
 
 
@@ -1684,12 +1682,10 @@ sfw_startup (void)
 	INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
 	INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
 
-	brw_init_test_client();
 	brw_init_test_service();
 	rc = sfw_register_test(&brw_test_service, &brw_test_client);
 	LASSERT (rc == 0);
 
-	ping_init_test_client();
 	ping_init_test_service();
 	rc = sfw_register_test(&ping_test_service, &ping_test_client);
 	LASSERT (rc == 0);
diff --git a/drivers/staging/lustre/lnet/selftest/ping_test.c b/drivers/staging/lustre/lnet/selftest/ping_test.c
index 750cac4..e4d751f 100644
--- a/drivers/staging/lustre/lnet/selftest/ping_test.c
+++ b/drivers/staging/lustre/lnet/selftest/ping_test.c
@@ -211,14 +211,12 @@ ping_server_handle(struct srpc_server_rpc *rpc)
 	return 0;
 }
 
-sfw_test_client_ops_t ping_test_client;
-void ping_init_test_client(void)
-{
-	ping_test_client.tso_init     = ping_client_init;
-	ping_test_client.tso_fini     = ping_client_fini;
-	ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
-	ping_test_client.tso_done_rpc = ping_client_done_rpc;
-}
+sfw_test_client_ops_t ping_test_client = {
+	.tso_init     = ping_client_init,
+	.tso_fini     = ping_client_fini,
+	.tso_prep_rpc = ping_client_prep_rpc,
+	.tso_done_rpc = ping_client_done_rpc,
+};
 
 srpc_service_t ping_test_service;
 void ping_init_test_service(void)
diff --git a/drivers/staging/lustre/lustre/include/lustre_dlm.h b/drivers/staging/lustre/lustre/include/lustre_dlm.h
index 0c6b784..c64235c 100644
--- a/drivers/staging/lustre/lustre/include/lustre_dlm.h
+++ b/drivers/staging/lustre/lustre/include/lustre_dlm.h
@@ -1141,7 +1141,7 @@ struct ldlm_callback_suite {
 	ldlm_completion_callback lcs_completion;
 	ldlm_blocking_callback   lcs_blocking;
 	ldlm_glimpse_callback    lcs_glimpse;
-};
+} __no_const;
 
 /* ldlm_lockd.c */
 int ldlm_del_waiting_lock(struct ldlm_lock *lock);
diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
index d5c4613..a341678 100644
--- a/drivers/staging/lustre/lustre/include/obd.h
+++ b/drivers/staging/lustre/lustre/include/obd.h
@@ -1439,7 +1439,7 @@ struct md_ops {
 	 * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a
 	 * wrapper function in include/linux/obd_class.h.
 	 */
-};
+} __no_const;
 
 struct lsm_operations {
 	void (*lsm_free)(struct lov_stripe_md *);
diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
index 986bf38..eab2558f 100644
--- a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
@@ -259,7 +259,7 @@ ldlm_process_flock_lock(struct ldlm_lock *req, __u64 *flags, int first_enq,
 	int added = (mode == LCK_NL);
 	int overlaps = 0;
 	int splitted = 0;
-	const struct ldlm_callback_suite null_cbs = { NULL };
+	const struct ldlm_callback_suite null_cbs = { };
 
 	CDEBUG(D_DLMTRACE, "flags %#llx owner "LPU64" pid %u mode %u start "
 	       LPU64" end "LPU64"\n", *flags,
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c b/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
index e947b91..f408990 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
@@ -217,7 +217,7 @@ DECLARE_PROC_HANDLER(proc_debug_mb)
 int LL_PROC_PROTO(proc_console_max_delay_cs)
 {
 	int rc, max_delay_cs;
-	ctl_table_t dummy = *table;
+	ctl_table_no_const dummy = *table;
 	cfs_duration_t d;
 
 	dummy.data = &max_delay_cs;
@@ -248,7 +248,7 @@ int LL_PROC_PROTO(proc_console_max_delay_cs)
 int LL_PROC_PROTO(proc_console_min_delay_cs)
 {
 	int rc, min_delay_cs;
-	ctl_table_t dummy = *table;
+	ctl_table_no_const dummy = *table;
 	cfs_duration_t d;
 
 	dummy.data = &min_delay_cs;
@@ -279,7 +279,7 @@ int LL_PROC_PROTO(proc_console_min_delay_cs)
 int LL_PROC_PROTO(proc_console_backoff)
 {
 	int rc, backoff;
-	ctl_table_t dummy = *table;
+	ctl_table_no_const dummy = *table;
 
 	dummy.data = &backoff;
 	dummy.proc_handler = &proc_dointvec;
diff --git a/drivers/staging/lustre/lustre/libcfs/module.c b/drivers/staging/lustre/lustre/libcfs/module.c
index b16ee08..a3db5c6 100644
--- a/drivers/staging/lustre/lustre/libcfs/module.c
+++ b/drivers/staging/lustre/lustre/libcfs/module.c
@@ -314,11 +314,11 @@ out:
 
 
 struct cfs_psdev_ops libcfs_psdev_ops = {
-	libcfs_psdev_open,
-	libcfs_psdev_release,
-	NULL,
-	NULL,
-	libcfs_ioctl
+	.p_open = libcfs_psdev_open,
+	.p_close = libcfs_psdev_release,
+	.p_read = NULL,
+	.p_write = NULL,
+	.p_ioctl = libcfs_ioctl
 };
 
 extern int insert_proc(void);
diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index ae6f61a..03c3d5d 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -660,7 +660,7 @@ int ll_dir_setdirstripe(struct inode *dir, struct lmv_user_md *lump,
 	int mode;
 	int err;
 
-	mode = (0755 & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
+	mode = (0755 & (S_IRWXUGO|S_ISVTX) & ~current_umask()) | S_IFDIR;
 	op_data = ll_prep_md_op_data(NULL, dir, NULL, filename,
 				     strlen(filename), mode, LUSTRE_OPC_MKDIR,
 				     lump);
diff --git a/drivers/staging/media/solo6x10/solo6x10-core.c b/drivers/staging/media/solo6x10/solo6x10-core.c
index f670469..03b7438 100644
--- a/drivers/staging/media/solo6x10/solo6x10-core.c
+++ b/drivers/staging/media/solo6x10/solo6x10-core.c
@@ -434,7 +434,7 @@ static void solo_device_release(struct device *dev)
 
 static int solo_sysfs_init(struct solo_dev *solo_dev)
 {
-	struct bin_attribute *sdram_attr = &solo_dev->sdram_attr;
+	bin_attribute_no_const *sdram_attr = &solo_dev->sdram_attr;
 	struct device *dev = &solo_dev->dev;
 	const char *driver;
 	int i;
diff --git a/drivers/staging/media/solo6x10/solo6x10-g723.c b/drivers/staging/media/solo6x10/solo6x10-g723.c
index 74f037b..5b5bb76 100644
--- a/drivers/staging/media/solo6x10/solo6x10-g723.c
+++ b/drivers/staging/media/solo6x10/solo6x10-g723.c
@@ -355,7 +355,7 @@ static int solo_snd_pcm_init(struct solo_dev *solo_dev)
 
 int solo_g723_init(struct solo_dev *solo_dev)
 {
-	static struct snd_device_ops ops = { NULL };
+	static struct snd_device_ops ops = { };
 	struct snd_card *card;
 	struct snd_kcontrol_new kctl;
 	char name[32];
diff --git a/drivers/staging/media/solo6x10/solo6x10-p2m.c b/drivers/staging/media/solo6x10/solo6x10-p2m.c
index 7f2f247..d999137 100644
--- a/drivers/staging/media/solo6x10/solo6x10-p2m.c
+++ b/drivers/staging/media/solo6x10/solo6x10-p2m.c
@@ -77,7 +77,7 @@ int solo_p2m_dma_desc(struct solo_dev *solo_dev,
 
 	/* Get next ID. According to Softlogic, 6110 has problems on !=0 P2M */
 	if (solo_dev->type != SOLO_DEV_6110 && multi_p2m) {
-		p2m_id = atomic_inc_return(&solo_dev->p2m_count) % SOLO_NR_P2M;
+		p2m_id = atomic_inc_return_unchecked(&solo_dev->p2m_count) % SOLO_NR_P2M;
 		if (p2m_id < 0)
 			p2m_id = -p2m_id;
 	}
diff --git a/drivers/staging/media/solo6x10/solo6x10.h b/drivers/staging/media/solo6x10/solo6x10.h
index 8964f8b..36eb087 100644
--- a/drivers/staging/media/solo6x10/solo6x10.h
+++ b/drivers/staging/media/solo6x10/solo6x10.h
@@ -237,7 +237,7 @@ struct solo_dev {
 
 	/* P2M DMA Engine */
 	struct solo_p2m_dev	p2m_dev[SOLO_NR_P2M];
-	atomic_t		p2m_count;
+	atomic_unchecked_t	p2m_count;
 	int			p2m_jiffies;
 	unsigned int		p2m_timeouts;
 
diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
index a0f4868..139f1fb 100644
--- a/drivers/staging/octeon/ethernet-rx.c
+++ b/drivers/staging/octeon/ethernet-rx.c
@@ -417,11 +417,11 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
 				/* Increment RX stats for virtual ports */
 				if (work->ipprt >= CVMX_PIP_NUM_INPUT_PORTS) {
 #ifdef CONFIG_64BIT
-					atomic64_add(1, (atomic64_t *)&priv->stats.rx_packets);
-					atomic64_add(skb->len, (atomic64_t *)&priv->stats.rx_bytes);
+					atomic64_add_unchecked(1, (atomic64_unchecked_t *)&priv->stats.rx_packets);
+					atomic64_add_unchecked(skb->len, (atomic64_unchecked_t *)&priv->stats.rx_bytes);
 #else
-					atomic_add(1, (atomic_t *)&priv->stats.rx_packets);
-					atomic_add(skb->len, (atomic_t *)&priv->stats.rx_bytes);
+					atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_packets);
+					atomic_add_unchecked(skb->len, (atomic_unchecked_t *)&priv->stats.rx_bytes);
 #endif
 				}
 				netif_receive_skb(skb);
@@ -432,9 +432,9 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
 					   dev->name);
 				*/
 #ifdef CONFIG_64BIT
-				atomic64_add(1, (atomic64_t *)&priv->stats.rx_dropped);
+				atomic64_add_unchecked(1, (atomic64_unchecked_t *)&priv->stats.rx_dropped);
 #else
-				atomic_add(1, (atomic_t *)&priv->stats.rx_dropped);
+				atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_dropped);
 #endif
 				dev_kfree_skb_irq(skb);
 			}
diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
index da9dd6b..8e3e0f5 100644
--- a/drivers/staging/octeon/ethernet.c
+++ b/drivers/staging/octeon/ethernet.c
@@ -247,11 +247,11 @@ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
 		 * since the RX tasklet also increments it.
 		 */
 #ifdef CONFIG_64BIT
-		atomic64_add(rx_status.dropped_packets,
-			     (atomic64_t *)&priv->stats.rx_dropped);
+		atomic64_add_unchecked(rx_status.dropped_packets,
+			     (atomic64_unchecked_t *)&priv->stats.rx_dropped);
 #else
-		atomic_add(rx_status.dropped_packets,
-			     (atomic_t *)&priv->stats.rx_dropped);
+		atomic_add_unchecked(rx_status.dropped_packets,
+			     (atomic_unchecked_t *)&priv->stats.rx_dropped);
 #endif
 	}
 
diff --git a/drivers/staging/rtl8188eu/include/hal_intf.h b/drivers/staging/rtl8188eu/include/hal_intf.h
index c59fccd..79f8fc2 100644
--- a/drivers/staging/rtl8188eu/include/hal_intf.h
+++ b/drivers/staging/rtl8188eu/include/hal_intf.h
@@ -267,7 +267,7 @@ struct hal_ops {
 	s32 (*c2h_handler)(struct adapter *padapter,
 			   struct c2h_evt_hdr *c2h_evt);
 	c2h_id_filter c2h_id_filter_ccx;
-};
+} __no_const;
 
 enum rt_eeprom_type {
 	EEPROM_93C46,
diff --git a/drivers/staging/rtl8188eu/include/rtw_io.h b/drivers/staging/rtl8188eu/include/rtw_io.h
index e8790f8..b4a5980 100644
--- a/drivers/staging/rtl8188eu/include/rtw_io.h
+++ b/drivers/staging/rtl8188eu/include/rtw_io.h
@@ -124,7 +124,7 @@ struct _io_ops {
 	u32 (*_write_scsi)(struct intf_hdl *pintfhdl, u32 cnt, u8 *pmem);
 	void (*_read_port_cancel)(struct intf_hdl *pintfhdl);
 	void (*_write_port_cancel)(struct intf_hdl *pintfhdl);
-};
+} __no_const;
 
 struct io_req {
 	struct list_head list;
diff --git a/drivers/staging/rtl8712/rtl871x_io.h b/drivers/staging/rtl8712/rtl871x_io.h
index dc23395..cf7e9b1 100644
--- a/drivers/staging/rtl8712/rtl871x_io.h
+++ b/drivers/staging/rtl8712/rtl871x_io.h
@@ -108,7 +108,7 @@ struct	_io_ops {
 			  u8 *pmem);
 	u32 (*_write_port)(struct intf_hdl *pintfhdl, u32 addr, u32 cnt,
 			   u8 *pmem);
-};
+} __no_const;
 
 struct io_req {
 	struct list_head list;
diff --git a/drivers/staging/usbip/vhci.h b/drivers/staging/usbip/vhci.h
index a863a98..d272795 100644
--- a/drivers/staging/usbip/vhci.h
+++ b/drivers/staging/usbip/vhci.h
@@ -83,7 +83,7 @@ struct vhci_hcd {
 	unsigned resuming:1;
 	unsigned long re_timeout;
 
-	atomic_t seqnum;
+	atomic_unchecked_t seqnum;
 
 	/*
 	 * NOTE:
diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c
index 0007d30..c06a693 100644
--- a/drivers/staging/usbip/vhci_hcd.c
+++ b/drivers/staging/usbip/vhci_hcd.c
@@ -439,7 +439,7 @@ static void vhci_tx_urb(struct urb *urb)
 
 	spin_lock(&vdev->priv_lock);
 
-	priv->seqnum = atomic_inc_return(&the_controller->seqnum);
+	priv->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum);
 	if (priv->seqnum == 0xffff)
 		dev_info(&urb->dev->dev, "seqnum max\n");
 
@@ -686,7 +686,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 			return -ENOMEM;
 		}
 
-		unlink->seqnum = atomic_inc_return(&the_controller->seqnum);
+		unlink->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum);
 		if (unlink->seqnum == 0xffff)
 			pr_info("seqnum max\n");
 
@@ -891,7 +891,7 @@ static int vhci_start(struct usb_hcd *hcd)
 		vdev->rhport = rhport;
 	}
 
-	atomic_set(&vhci->seqnum, 0);
+	atomic_set_unchecked(&vhci->seqnum, 0);
 	spin_lock_init(&vhci->lock);
 
 	hcd->power_budget = 0; /* no limit */
diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c
index d07fcb5..358e1e1 100644
--- a/drivers/staging/usbip/vhci_rx.c
+++ b/drivers/staging/usbip/vhci_rx.c
@@ -80,7 +80,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
 	if (!urb) {
 		pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum);
 		pr_info("max seqnum %d\n",
-			atomic_read(&the_controller->seqnum));
+			atomic_read_unchecked(&the_controller->seqnum));
 		usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
 		return;
 	}
diff --git a/drivers/staging/vt6655/hostap.c b/drivers/staging/vt6655/hostap.c
index 317c2a8..ffeb4ef 100644
--- a/drivers/staging/vt6655/hostap.c
+++ b/drivers/staging/vt6655/hostap.c
@@ -68,14 +68,13 @@ static int msglevel = MSG_LEVEL_INFO;
  *
  */
 
+static net_device_ops_no_const apdev_netdev_ops;
+
 static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked)
 {
 	PSDevice apdev_priv;
 	struct net_device *dev = pDevice->dev;
 	int ret;
-	const struct net_device_ops apdev_netdev_ops = {
-		.ndo_start_xmit         = pDevice->tx_80211,
-	};
 
 	DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name);
 
@@ -87,6 +86,8 @@ static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked)
 	*apdev_priv = *pDevice;
 	eth_hw_addr_inherit(pDevice->apdev, dev);
 
+	/* only half broken now */
+	apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211;
 	pDevice->apdev->netdev_ops = &apdev_netdev_ops;
 
 	pDevice->apdev->type = ARPHRD_IEEE80211;
diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
index e7e9372..161f530 100644
--- a/drivers/target/sbp/sbp_target.c
+++ b/drivers/target/sbp/sbp_target.c
@@ -62,7 +62,7 @@ static const u32 sbp_unit_directory_template[] = {
 
 #define SESSION_MAINTENANCE_INTERVAL HZ
 
-static atomic_t login_id = ATOMIC_INIT(0);
+static atomic_unchecked_t login_id = ATOMIC_INIT(0);
 
 static void session_maintenance_work(struct work_struct *);
 static int sbp_run_transaction(struct fw_card *, int, int, int, int,
@@ -444,7 +444,7 @@ static void sbp_management_request_login(
 	login->lun = se_lun;
 	login->status_fifo_addr = sbp2_pointer_to_addr(&req->orb.status_fifo);
 	login->exclusive = LOGIN_ORB_EXCLUSIVE(be32_to_cpu(req->orb.misc));
-	login->login_id = atomic_inc_return(&login_id);
+	login->login_id = atomic_inc_return_unchecked(&login_id);
 
 	login->tgt_agt = sbp_target_agent_register(login);
 	if (IS_ERR(login->tgt_agt)) {
diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
index 98da901..bb443e8 100644
--- a/drivers/target/target_core_device.c
+++ b/drivers/target/target_core_device.c
@@ -1525,7 +1525,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
 	spin_lock_init(&dev->se_tmr_lock);
 	spin_lock_init(&dev->qf_cmd_lock);
 	sema_init(&dev->caw_sem, 1);
-	atomic_set(&dev->dev_ordered_id, 0);
+	atomic_set_unchecked(&dev->dev_ordered_id, 0);
 	INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list);
 	spin_lock_init(&dev->t10_wwn.t10_vpd_lock);
 	INIT_LIST_HEAD(&dev->t10_pr.registration_list);
diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
index 7fa62fc..abdd041 100644
--- a/drivers/target/target_core_transport.c
+++ b/drivers/target/target_core_transport.c
@@ -1165,7 +1165,7 @@ transport_check_alloc_task_attr(struct se_cmd *cmd)
 	 * Used to determine when ORDERED commands should go from
 	 * Dormant to Active status.
 	 */
-	cmd->se_ordered_id = atomic_inc_return(&dev->dev_ordered_id);
+	cmd->se_ordered_id = atomic_inc_return_unchecked(&dev->dev_ordered_id);
 	smp_mb__after_atomic();
 	pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n",
 			cmd->se_ordered_id, cmd->sam_task_attr,
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 4b2b999..cad9fa5 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -30,6 +30,7 @@
 #include <linux/err.h>
 #include <linux/export.h>
 #include <linux/string.h>
+#include <linux/mm.h>
 
 #include "thermal_core.h"
 
@@ -341,8 +342,10 @@ thermal_zone_of_add_sensor(struct device_node *zone,
 	tz->get_trend = get_trend;
 	tz->sensor_data = data;
 
-	tzd->ops->get_temp = of_thermal_get_temp;
-	tzd->ops->get_trend = of_thermal_get_trend;
+	pax_open_kernel();
+	*(void **)&tzd->ops->get_temp = of_thermal_get_temp;
+	*(void **)&tzd->ops->get_trend = of_thermal_get_trend;
+	pax_close_kernel();
 	mutex_unlock(&tzd->lock);
 
 	return tzd;
@@ -461,8 +464,10 @@ void thermal_zone_of_sensor_unregister(struct device *dev,
 		return;
 
 	mutex_lock(&tzd->lock);
-	tzd->ops->get_temp = NULL;
-	tzd->ops->get_trend = NULL;
+	pax_open_kernel();
+	*(void **)&tzd->ops->get_temp = NULL;
+	*(void **)&tzd->ops->get_trend = NULL;
+	pax_close_kernel();
 
 	tz->get_temp = NULL;
 	tz->get_trend = NULL;
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index a57bb5a..1f727d33 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -1570,10 +1570,10 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
 	printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line,
 			info->port.count);
 #endif
-	info->port.count++;
+	atomic_inc(&info->port.count);
 #ifdef CY_DEBUG_COUNT
 	printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n",
-		current->pid, info->port.count);
+		current->pid, atomic_read(&info->port.count));
 #endif
 
 	/*
@@ -3974,7 +3974,7 @@ static int cyclades_proc_show(struct seq_file *m, void *v)
 		for (j = 0; j < cy_card[i].nports; j++) {
 			info = &cy_card[i].ports[j];
 
-			if (info->port.count) {
+			if (atomic_read(&info->port.count)) {
 				/* XXX is the ldisc num worth this? */
 				struct tty_struct *tty;
 				struct tty_ldisc *ld;
diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
index 4fcec1d..5a036f7 100644
--- a/drivers/tty/hvc/hvc_console.c
+++ b/drivers/tty/hvc/hvc_console.c
@@ -342,7 +342,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
 
 	spin_lock_irqsave(&hp->port.lock, flags);
 	/* Check and then increment for fast path open. */
-	if (hp->port.count++ > 0) {
+	if (atomic_inc_return(&hp->port.count) > 1) {
 		spin_unlock_irqrestore(&hp->port.lock, flags);
 		hvc_kick();
 		return 0;
@@ -397,7 +397,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 
 	spin_lock_irqsave(&hp->port.lock, flags);
 
-	if (--hp->port.count == 0) {
+	if (atomic_dec_return(&hp->port.count) == 0) {
 		spin_unlock_irqrestore(&hp->port.lock, flags);
 		/* We are done with the tty pointer now. */
 		tty_port_tty_set(&hp->port, NULL);
@@ -419,9 +419,9 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
 		 */
 		tty_wait_until_sent_from_close(tty, HVC_CLOSE_WAIT);
 	} else {
-		if (hp->port.count < 0)
+		if (atomic_read(&hp->port.count) < 0)
 			printk(KERN_ERR "hvc_close %X: oops, count is %d\n",
-				hp->vtermno, hp->port.count);
+				hp->vtermno, atomic_read(&hp->port.count));
 		spin_unlock_irqrestore(&hp->port.lock, flags);
 	}
 }
@@ -451,12 +451,12 @@ static void hvc_hangup(struct tty_struct *tty)
 	 * open->hangup case this can be called after the final close so prevent
 	 * that from happening for now.
 	 */
-	if (hp->port.count <= 0) {
+	if (atomic_read(&hp->port.count) <= 0) {
 		spin_unlock_irqrestore(&hp->port.lock, flags);
 		return;
 	}
 
-	hp->port.count = 0;
+	atomic_set(&hp->port.count, 0);
 	spin_unlock_irqrestore(&hp->port.lock, flags);
 	tty_port_tty_set(&hp->port, NULL);
 
@@ -504,7 +504,7 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count
 		return -EPIPE;
 
 	/* FIXME what's this (unprotected) check for? */
-	if (hp->port.count <= 0)
+	if (atomic_read(&hp->port.count) <= 0)
 		return -EIO;
 
 	spin_lock_irqsave(&hp->lock, flags);
diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
index 81e939e..95ead10 100644
--- a/drivers/tty/hvc/hvcs.c
+++ b/drivers/tty/hvc/hvcs.c
@@ -83,6 +83,7 @@
 #include <asm/hvcserver.h>
 #include <asm/uaccess.h>
 #include <asm/vio.h>
+#include <asm/local.h>
 
 /*
  * 1.3.0 -> 1.3.1 In hvcs_open memset(..,0x00,..) instead of memset(..,0x3F,00).
@@ -416,7 +417,7 @@ static ssize_t hvcs_vterm_state_store(struct device *dev, struct device_attribut
 
 	spin_lock_irqsave(&hvcsd->lock, flags);
 
-	if (hvcsd->port.count > 0) {
+	if (atomic_read(&hvcsd->port.count) > 0) {
 		spin_unlock_irqrestore(&hvcsd->lock, flags);
 		printk(KERN_INFO "HVCS: vterm state unchanged.  "
 				"The hvcs device node is still in use.\n");
@@ -1127,7 +1128,7 @@ static int hvcs_install(struct tty_driver *driver, struct tty_struct *tty)
 		}
 	}
 
-	hvcsd->port.count = 0;
+	atomic_set(&hvcsd->port.count, 0);
 	hvcsd->port.tty = tty;
 	tty->driver_data = hvcsd;
 
@@ -1180,7 +1181,7 @@ static int hvcs_open(struct tty_struct *tty, struct file *filp)
 	unsigned long flags;
 
 	spin_lock_irqsave(&hvcsd->lock, flags);
-	hvcsd->port.count++;
+	atomic_inc(&hvcsd->port.count);
 	hvcsd->todo_mask |= HVCS_SCHED_READ;
 	spin_unlock_irqrestore(&hvcsd->lock, flags);
 
@@ -1216,7 +1217,7 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp)
 	hvcsd = tty->driver_data;
 
 	spin_lock_irqsave(&hvcsd->lock, flags);
-	if (--hvcsd->port.count == 0) {
+	if (atomic_dec_and_test(&hvcsd->port.count)) {
 
 		vio_disable_interrupts(hvcsd->vdev);
 
@@ -1241,10 +1242,10 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp)
 
 		free_irq(irq, hvcsd);
 		return;
-	} else if (hvcsd->port.count < 0) {
+	} else if (atomic_read(&hvcsd->port.count) < 0) {
 		printk(KERN_ERR "HVCS: vty-server@%X open_count: %d"
 				" is missmanaged.\n",
-		hvcsd->vdev->unit_address, hvcsd->port.count);
+		hvcsd->vdev->unit_address, atomic_read(&hvcsd->port.count));
 	}
 
 	spin_unlock_irqrestore(&hvcsd->lock, flags);
@@ -1266,7 +1267,7 @@ static void hvcs_hangup(struct tty_struct * tty)
 
 	spin_lock_irqsave(&hvcsd->lock, flags);
 	/* Preserve this so that we know how many kref refs to put */
-	temp_open_count = hvcsd->port.count;
+	temp_open_count = atomic_read(&hvcsd->port.count);
 
 	/*
 	 * Don't kref put inside the spinlock because the destruction
@@ -1281,7 +1282,7 @@ static void hvcs_hangup(struct tty_struct * tty)
 	tty->driver_data = NULL;
 	hvcsd->port.tty = NULL;
 
-	hvcsd->port.count = 0;
+	atomic_set(&hvcsd->port.count, 0);
 
 	/* This will drop any buffered data on the floor which is OK in a hangup
 	 * scenario. */
@@ -1352,7 +1353,7 @@ static int hvcs_write(struct tty_struct *tty,
 	 * the middle of a write operation?  This is a crummy place to do this
 	 * but we want to keep it all in the spinlock.
 	 */
-	if (hvcsd->port.count <= 0) {
+	if (atomic_read(&hvcsd->port.count) <= 0) {
 		spin_unlock_irqrestore(&hvcsd->lock, flags);
 		return -ENODEV;
 	}
@@ -1426,7 +1427,7 @@ static int hvcs_write_room(struct tty_struct *tty)
 {
 	struct hvcs_struct *hvcsd = tty->driver_data;
 
-	if (!hvcsd || hvcsd->port.count <= 0)
+	if (!hvcsd || atomic_read(&hvcsd->port.count) <= 0)
 		return 0;
 
 	return HVCS_BUFF_LEN - hvcsd->chars_in_buffer;
diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c
index 4190199..06d5bfa 100644
--- a/drivers/tty/hvc/hvsi.c
+++ b/drivers/tty/hvc/hvsi.c
@@ -85,7 +85,7 @@ struct hvsi_struct {
 	int n_outbuf;
 	uint32_t vtermno;
 	uint32_t virq;
-	atomic_t seqno; /* HVSI packet sequence number */
+	atomic_unchecked_t seqno; /* HVSI packet sequence number */
 	uint16_t mctrl;
 	uint8_t state;  /* HVSI protocol state */
 	uint8_t flags;
@@ -295,7 +295,7 @@ static int hvsi_version_respond(struct hvsi_struct *hp, uint16_t query_seqno)
 
 	packet.hdr.type = VS_QUERY_RESPONSE_PACKET_HEADER;
 	packet.hdr.len = sizeof(struct hvsi_query_response);
-	packet.hdr.seqno = atomic_inc_return(&hp->seqno);
+	packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
 	packet.verb = VSV_SEND_VERSION_NUMBER;
 	packet.u.version = HVSI_VERSION;
 	packet.query_seqno = query_seqno+1;
@@ -555,7 +555,7 @@ static int hvsi_query(struct hvsi_struct *hp, uint16_t verb)
 
 	packet.hdr.type = VS_QUERY_PACKET_HEADER;
 	packet.hdr.len = sizeof(struct hvsi_query);
-	packet.hdr.seqno = atomic_inc_return(&hp->seqno);
+	packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
 	packet.verb = verb;
 
 	pr_debug("%s: sending %i bytes\n", __func__, packet.hdr.len);
@@ -597,7 +597,7 @@ static int hvsi_set_mctrl(struct hvsi_struct *hp, uint16_t mctrl)
 	int wrote;
 
 	packet.hdr.type = VS_CONTROL_PACKET_HEADER,
-	packet.hdr.seqno = atomic_inc_return(&hp->seqno);
+	packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
 	packet.hdr.len = sizeof(struct hvsi_control);
 	packet.verb = VSV_SET_MODEM_CTL;
 	packet.mask = HVSI_TSDTR;
@@ -680,7 +680,7 @@ static int hvsi_put_chars(struct hvsi_struct *hp, const char *buf, int count)
 	BUG_ON(count > HVSI_MAX_OUTGOING_DATA);
 
 	packet.hdr.type = VS_DATA_PACKET_HEADER;
-	packet.hdr.seqno = atomic_inc_return(&hp->seqno);
+	packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
 	packet.hdr.len = count + sizeof(struct hvsi_header);
 	memcpy(&packet.data, buf, count);
 
@@ -697,7 +697,7 @@ static void hvsi_close_protocol(struct hvsi_struct *hp)
 	struct hvsi_control packet __ALIGNED__;
 
 	packet.hdr.type = VS_CONTROL_PACKET_HEADER;
-	packet.hdr.seqno = atomic_inc_return(&hp->seqno);
+	packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
 	packet.hdr.len = 6;
 	packet.verb = VSV_CLOSE_PROTOCOL;
 
@@ -725,7 +725,7 @@ static int hvsi_open(struct tty_struct *tty, struct file *filp)
 
 	tty_port_tty_set(&hp->port, tty);
 	spin_lock_irqsave(&hp->lock, flags);
-	hp->port.count++;
+	atomic_inc(&hp->port.count);
 	atomic_set(&hp->seqno, 0);
 	h_vio_signal(hp->vtermno, VIO_IRQ_ENABLE);
 	spin_unlock_irqrestore(&hp->lock, flags);
@@ -782,7 +782,7 @@ static void hvsi_close(struct tty_struct *tty, struct file *filp)
 
 	spin_lock_irqsave(&hp->lock, flags);
 
-	if (--hp->port.count == 0) {
+	if (atomic_dec_return(&hp->port.count) == 0) {
 		tty_port_tty_set(&hp->port, NULL);
 		hp->inbuf_end = hp->inbuf; /* discard remaining partial packets */
 
@@ -815,9 +815,9 @@ static void hvsi_close(struct tty_struct *tty, struct file *filp)
 
 			spin_lock_irqsave(&hp->lock, flags);
 		}
-	} else if (hp->port.count < 0)
+	} else if (atomic_read(&hp->port.count) < 0)
 		printk(KERN_ERR "hvsi_close %lu: oops, count is %d\n",
-		       hp - hvsi_ports, hp->port.count);
+		       hp - hvsi_ports, atomic_read(&hp->port.count));
 
 	spin_unlock_irqrestore(&hp->lock, flags);
 }
@@ -832,7 +832,7 @@ static void hvsi_hangup(struct tty_struct *tty)
 	tty_port_tty_set(&hp->port, NULL);
 
 	spin_lock_irqsave(&hp->lock, flags);
-	hp->port.count = 0;
+	atomic_set(&hp->port.count, 0);
 	hp->n_outbuf = 0;
 	spin_unlock_irqrestore(&hp->lock, flags);
 }
diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
index 7ae6c29..05c6dba 100644
--- a/drivers/tty/hvc/hvsi_lib.c
+++ b/drivers/tty/hvc/hvsi_lib.c
@@ -8,7 +8,7 @@
 
 static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
 {
-	packet->seqno = cpu_to_be16(atomic_inc_return(&pv->seqno));
+	packet->seqno = cpu_to_be16(atomic_inc_return_unchecked(&pv->seqno));
 
 	/* Assumes that always succeeds, works in practice */
 	return pv->put_chars(pv->termno, (char *)packet, packet->len);
@@ -20,7 +20,7 @@ static void hvsi_start_handshake(struct hvsi_priv *pv)
 
 	/* Reset state */
 	pv->established = 0;
-	atomic_set(&pv->seqno, 0);
+	atomic_set_unchecked(&pv->seqno, 0);
 
 	pr_devel("HVSI@%x: Handshaking started\n", pv->termno);
 
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index 17ee3bf..8d2520d 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -28,6 +28,7 @@
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
 #include <linux/uaccess.h>
+#include <asm/local.h>
 
 #include "tty.h"
 #include "network.h"
@@ -98,10 +99,10 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
 		mutex_unlock(&tty->ipw_tty_mutex);
 		return -ENODEV;
 	}
-	if (tty->port.count == 0)
+	if (atomic_read(&tty->port.count) == 0)
 		tty->tx_bytes_queued = 0;
 
-	tty->port.count++;
+	atomic_inc(&tty->port.count);
 
 	tty->port.tty = linux_tty;
 	linux_tty->driver_data = tty;
@@ -117,9 +118,7 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
 
 static void do_ipw_close(struct ipw_tty *tty)
 {
-	tty->port.count--;
-
-	if (tty->port.count == 0) {
+	if (atomic_dec_return(&tty->port.count) == 0) {
 		struct tty_struct *linux_tty = tty->port.tty;
 
 		if (linux_tty != NULL) {
@@ -140,7 +139,7 @@ static void ipw_hangup(struct tty_struct *linux_tty)
 		return;
 
 	mutex_lock(&tty->ipw_tty_mutex);
-	if (tty->port.count == 0) {
+	if (atomic_read(&tty->port.count) == 0) {
 		mutex_unlock(&tty->ipw_tty_mutex);
 		return;
 	}
@@ -163,7 +162,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
 
 	mutex_lock(&tty->ipw_tty_mutex);
 
-	if (!tty->port.count) {
+	if (!atomic_read(&tty->port.count)) {
 		mutex_unlock(&tty->ipw_tty_mutex);
 		return;
 	}
@@ -202,7 +201,7 @@ static int ipw_write(struct tty_struct *linux_tty,
 		return -ENODEV;
 
 	mutex_lock(&tty->ipw_tty_mutex);
-	if (!tty->port.count) {
+	if (!atomic_read(&tty->port.count)) {
 		mutex_unlock(&tty->ipw_tty_mutex);
 		return -EINVAL;
 	}
@@ -242,7 +241,7 @@ static int ipw_write_room(struct tty_struct *linux_tty)
 	if (!tty)
 		return -ENODEV;
 
-	if (!tty->port.count)
+	if (!atomic_read(&tty->port.count))
 		return -EINVAL;
 
 	room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
@@ -284,7 +283,7 @@ static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
 	if (!tty)
 		return 0;
 
-	if (!tty->port.count)
+	if (!atomic_read(&tty->port.count))
 		return 0;
 
 	return tty->tx_bytes_queued;
@@ -365,7 +364,7 @@ static int ipw_tiocmget(struct tty_struct *linux_tty)
 	if (!tty)
 		return -ENODEV;
 
-	if (!tty->port.count)
+	if (!atomic_read(&tty->port.count))
 		return -EINVAL;
 
 	return get_control_lines(tty);
@@ -381,7 +380,7 @@ ipw_tiocmset(struct tty_struct *linux_tty,
 	if (!tty)
 		return -ENODEV;
 
-	if (!tty->port.count)
+	if (!atomic_read(&tty->port.count))
 		return -EINVAL;
 
 	return set_control_lines(tty, set, clear);
@@ -395,7 +394,7 @@ static int ipw_ioctl(struct tty_struct *linux_tty,
 	if (!tty)
 		return -ENODEV;
 
-	if (!tty->port.count)
+	if (!atomic_read(&tty->port.count))
 		return -EINVAL;
 
 	/* FIXME: Exactly how is the tty object locked here .. */
@@ -551,7 +550,7 @@ void ipwireless_tty_free(struct ipw_tty *tty)
 				 * are gone */
 				mutex_lock(&ttyj->ipw_tty_mutex);
 			}
-			while (ttyj->port.count)
+			while (atomic_read(&ttyj->port.count))
 				do_ipw_close(ttyj);
 			ipwireless_disassociate_network_ttys(network,
 							     ttyj->channel_idx);
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 1deaca4..c8582d4 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1189,7 +1189,7 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
 	}
 
 	ch = &brd->ports[port % MAX_PORTS_PER_BOARD];
-	ch->port.count++;
+	atomic_inc(&ch->port.count);
 	tty->driver_data = ch;
 	tty_port_tty_set(&ch->port, tty);
 	mutex_lock(&ch->port.mutex);
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 2ebe47b..3205833 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1644,7 +1644,7 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr)
 	spin_lock_init(&dlci->lock);
 	mutex_init(&dlci->mutex);
 	dlci->fifo = &dlci->_fifo;
-	if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) {
+	if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL)) {
 		kfree(dlci);
 		return NULL;
 	}
@@ -2954,7 +2954,7 @@ static int gsmtty_open(struct tty_struct *tty, struct file *filp)
 	struct gsm_dlci *dlci = tty->driver_data;
 	struct tty_port *port = &dlci->port;
 
-	port->count++;
+	atomic_inc(&port->count);
 	tty_port_tty_set(port, tty);
 
 	dlci->modem_rx = 0;
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index f44f1ba..a8d5915 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -115,7 +115,7 @@ struct n_tty_data {
 	int minimum_to_wake;
 
 	/* consumer-published */
-	size_t read_tail;
+	size_t read_tail __intentional_overflow(-1);
 	size_t line_start;
 
 	/* protected by output lock */
@@ -2517,6 +2517,7 @@ void n_tty_inherit_ops(struct tty_ldisc_ops *ops)
 {
 	*ops = tty_ldisc_N_TTY;
 	ops->owner = NULL;
-	ops->refcount = ops->flags = 0;
+	atomic_set(&ops->refcount, 0);
+	ops->flags = 0;
 }
 EXPORT_SYMBOL_GPL(n_tty_inherit_ops);
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index 25c9bc7..24077b7 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -790,8 +790,10 @@ static void __init unix98_pty_init(void)
 		panic("Couldn't register Unix98 pts driver");
 
 	/* Now create the /dev/ptmx special device */
+	pax_open_kernel();
 	tty_default_fops(&ptmx_fops);
-	ptmx_fops.open = ptmx_open;
+	*(void **)&ptmx_fops.open = ptmx_open;
+	pax_close_kernel();
 
 	cdev_init(&ptmx_cdev, &ptmx_fops);
 	if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
index 383c4c7..d408e21 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -914,7 +914,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
 	tty->driver_data = info;
 	tty_port_tty_set(port, tty);
 
-	if (port->count++ == 0) {
+	if (atomic_inc_return(&port->count) == 1) {
 		atomic_inc(&rp_num_ports_open);
 
 #ifdef ROCKET_DEBUG_OPEN
@@ -923,7 +923,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
 #endif
 	}
 #ifdef ROCKET_DEBUG_OPEN
-	printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
+	printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, atomic-read(&info->port.count));
 #endif
 
 	/*
@@ -1515,7 +1515,7 @@ static void rp_hangup(struct tty_struct *tty)
 		spin_unlock_irqrestore(&info->port.lock, flags);
 		return;
 	}
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		atomic_dec(&rp_num_ports_open);
 	clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
 	spin_unlock_irqrestore(&info->port.lock, flags);
diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
index 1274499..f541382 100644
--- a/drivers/tty/serial/ioc4_serial.c
+++ b/drivers/tty/serial/ioc4_serial.c
@@ -437,7 +437,7 @@ struct ioc4_soft {
 		} is_intr_info[MAX_IOC4_INTR_ENTS];
 
 		/* Number of entries active in the above array */
-		atomic_t is_num_intrs;
+		atomic_unchecked_t is_num_intrs;
 	} is_intr_type[IOC4_NUM_INTR_TYPES];
 
 	/* is_ir_lock must be held while
@@ -974,7 +974,7 @@ intr_connect(struct ioc4_soft *soft, int type,
 	BUG_ON(!((type == IOC4_SIO_INTR_TYPE)
 	       || (type == IOC4_OTHER_INTR_TYPE)));
 
-	i = atomic_inc_return(&soft-> is_intr_type[type].is_num_intrs) - 1;
+	i = atomic_inc_return_unchecked(&soft-> is_intr_type[type].is_num_intrs) - 1;
 	BUG_ON(!(i < MAX_IOC4_INTR_ENTS || (printk("i %d\n", i), 0)));
 
 	/* Save off the lower level interrupt handler */
@@ -1001,7 +1001,7 @@ static irqreturn_t ioc4_intr(int irq, void *arg)
 
 	soft = arg;
 	for (intr_type = 0; intr_type < IOC4_NUM_INTR_TYPES; intr_type++) {
-		num_intrs = (int)atomic_read(
+		num_intrs = (int)atomic_read_unchecked(
 				&soft->is_intr_type[intr_type].is_num_intrs);
 
 		this_mir = this_ir = pending_intrs(soft, intr_type);
diff --git a/drivers/tty/serial/kgdb_nmi.c b/drivers/tty/serial/kgdb_nmi.c
index cfadf29..8cf4595 100644
--- a/drivers/tty/serial/kgdb_nmi.c
+++ b/drivers/tty/serial/kgdb_nmi.c
@@ -51,7 +51,9 @@ static int kgdb_nmi_console_setup(struct console *co, char *options)
 	 * I/O utilities that messages sent to the console will automatically
 	 * be displayed on the dbg_io.
 	 */
-	dbg_io_ops->is_console = true;
+	pax_open_kernel();
+	*(int *)&dbg_io_ops->is_console = true;
+	pax_close_kernel();
 
 	return 0;
 }
diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
index a260cde..6b2b5ce 100644
--- a/drivers/tty/serial/kgdboc.c
+++ b/drivers/tty/serial/kgdboc.c
@@ -24,8 +24,9 @@
 #define MAX_CONFIG_LEN		40
 
 static struct kgdb_io		kgdboc_io_ops;
+static struct kgdb_io		kgdboc_io_ops_console;
 
-/* -1 = init not run yet, 0 = unconfigured, 1 = configured. */
+/* -1 = init not run yet, 0 = unconfigured, 1/2 = configured. */
 static int configured		= -1;
 
 static char config[MAX_CONFIG_LEN];
@@ -151,6 +152,8 @@ static void cleanup_kgdboc(void)
 	kgdboc_unregister_kbd();
 	if (configured == 1)
 		kgdb_unregister_io_module(&kgdboc_io_ops);
+	else if (configured == 2)
+		kgdb_unregister_io_module(&kgdboc_io_ops_console);
 }
 
 static int configure_kgdboc(void)
@@ -160,13 +163,13 @@ static int configure_kgdboc(void)
 	int err;
 	char *cptr = config;
 	struct console *cons;
+	int is_console = 0;
 
 	err = kgdboc_option_setup(config);
 	if (err || !strlen(config) || isspace(config[0]))
 		goto noconfig;
 
 	err = -ENODEV;
-	kgdboc_io_ops.is_console = 0;
 	kgdb_tty_driver = NULL;
 
 	kgdboc_use_kms = 0;
@@ -187,7 +190,7 @@ static int configure_kgdboc(void)
 		int idx;
 		if (cons->device && cons->device(cons, &idx) == p &&
 		    idx == tty_line) {
-			kgdboc_io_ops.is_console = 1;
+			is_console = 1;
 			break;
 		}
 		cons = cons->next;
@@ -197,7 +200,13 @@ static int configure_kgdboc(void)
 	kgdb_tty_line = tty_line;
 
 do_register:
-	err = kgdb_register_io_module(&kgdboc_io_ops);
+	if (is_console) {
+		err = kgdb_register_io_module(&kgdboc_io_ops_console);
+		configured = 2;
+	} else {
+		err = kgdb_register_io_module(&kgdboc_io_ops);
+		configured = 1;
+	}
 	if (err)
 		goto noconfig;
 
@@ -205,8 +214,6 @@ do_register:
 	if (err)
 		goto nmi_con_failed;
 
-	configured = 1;
-
 	return 0;
 
 nmi_con_failed:
@@ -223,7 +230,7 @@ noconfig:
 static int __init init_kgdboc(void)
 {
 	/* Already configured? */
-	if (configured == 1)
+	if (configured >= 1)
 		return 0;
 
 	return configure_kgdboc();
@@ -272,7 +279,7 @@ static int param_set_kgdboc_var(const char *kmessage, struct kernel_param *kp)
 	if (config[len - 1] == '\n')
 		config[len - 1] = '\0';
 
-	if (configured == 1)
+	if (configured >= 1)
 		cleanup_kgdboc();
 
 	/* Go and configure with the new params. */
@@ -312,6 +319,15 @@ static struct kgdb_io kgdboc_io_ops = {
 	.post_exception		= kgdboc_post_exp_handler,
 };
 
+static struct kgdb_io kgdboc_io_ops_console = {
+	.name			= "kgdboc",
+	.read_char		= kgdboc_get_char,
+	.write_char		= kgdboc_put_char,
+	.pre_exception		= kgdboc_pre_exp_handler,
+	.post_exception		= kgdboc_post_exp_handler,
+	.is_console		= 1
+};
+
 #ifdef CONFIG_KGDB_SERIAL_CONSOLE
 /* This is only available if kgdboc is a built in for early debugging */
 static int __init kgdboc_early_init(char *opt)
diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
index 72000a6..a190bc4 100644
--- a/drivers/tty/serial/msm_serial.c
+++ b/drivers/tty/serial/msm_serial.c
@@ -981,7 +981,7 @@ static struct uart_driver msm_uart_driver = {
 	.cons = MSM_CONSOLE,
 };
 
-static atomic_t msm_uart_next_id = ATOMIC_INIT(0);
+static atomic_unchecked_t msm_uart_next_id = ATOMIC_INIT(0);
 
 static const struct of_device_id msm_uartdm_table[] = {
 	{ .compatible = "qcom,msm-uartdm-v1.1", .data = (void *)UARTDM_1P1 },
@@ -1000,7 +1000,7 @@ static int msm_serial_probe(struct platform_device *pdev)
 	int irq;
 
 	if (pdev->id == -1)
-		pdev->id = atomic_inc_return(&msm_uart_next_id) - 1;
+		pdev->id = atomic_inc_return_unchecked(&msm_uart_next_id) - 1;
 
 	if (unlikely(pdev->id < 0 || pdev->id >= UART_NR))
 		return -ENXIO;
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
index c1d3ebd..f618a93 100644
--- a/drivers/tty/serial/samsung.c
+++ b/drivers/tty/serial/samsung.c
@@ -486,11 +486,16 @@ static void s3c24xx_serial_shutdown(struct uart_port *port)
 	}
 }
 
+static int s3c64xx_serial_startup(struct uart_port *port);
 static int s3c24xx_serial_startup(struct uart_port *port)
 {
 	struct s3c24xx_uart_port *ourport = to_ourport(port);
 	int ret;
 
+	/* Startup sequence is different for s3c64xx and higher SoC's */
+	if (s3c24xx_serial_has_interrupt_mask(port))
+		return s3c64xx_serial_startup(port);
+
 	dbg("s3c24xx_serial_startup: port=%p (%08llx,%p)\n",
 	    port, (unsigned long long)port->mapbase, port->membase);
 
@@ -1164,10 +1169,6 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
 	/* setup info for port */
 	port->dev	= &platdev->dev;
 
-	/* Startup sequence is different for s3c64xx and higher SoC's */
-	if (s3c24xx_serial_has_interrupt_mask(port))
-		s3c24xx_serial_ops.startup = s3c64xx_serial_startup;
-
 	port->uartclk = 1;
 
 	if (cfg->uart_flags & UPF_CONS_FLOW) {
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index ef2fb36..238d80c 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -1336,7 +1336,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
 
 	pr_debug("uart_close(%d) called\n", uport ? uport->line : -1);
 
-	if (!port->count || tty_port_close_start(port, tty, filp) == 0)
+	if (!atomic_read(&port->count) || tty_port_close_start(port, tty, filp) == 0)
 		return;
 
 	/*
@@ -1463,7 +1463,7 @@ static void uart_hangup(struct tty_struct *tty)
 		uart_flush_buffer(tty);
 		uart_shutdown(tty, state);
 		spin_lock_irqsave(&port->lock, flags);
-		port->count = 0;
+		atomic_set(&port->count, 0);
 		clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags);
 		spin_unlock_irqrestore(&port->lock, flags);
 		tty_port_tty_set(port, NULL);
@@ -1561,7 +1561,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
 		goto end;
 	}
 
-	port->count++;
+	atomic_inc(&port->count);
 	if (!state->uart_port || state->uart_port->flags & UPF_DEAD) {
 		retval = -ENXIO;
 		goto err_dec_count;
@@ -1601,7 +1601,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
 end:
 	return retval;
 err_dec_count:
-	port->count--;
+	atomic_inc(&port->count);
 	mutex_unlock(&port->mutex);
 	goto end;
 }
diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
index d48e040..0f52764 100644
--- a/drivers/tty/synclink.c
+++ b/drivers/tty/synclink.c
@@ -3090,7 +3090,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
 	
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
-			 __FILE__,__LINE__, info->device_name, info->port.count);
+			 __FILE__,__LINE__, info->device_name, atomic_read(&info->port.count));
 
 	if (tty_port_close_start(&info->port, tty, filp) == 0)
 		goto cleanup;
@@ -3108,7 +3108,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
 cleanup:			
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__,
-			tty->driver->name, info->port.count);
+			tty->driver->name, atomic_read(&info->port.count));
 			
 }	/* end of mgsl_close() */
 
@@ -3207,8 +3207,8 @@ static void mgsl_hangup(struct tty_struct *tty)
 
 	mgsl_flush_buffer(tty);
 	shutdown(info);
-	
-	info->port.count = 0;	
+
+	atomic_set(&info->port.count, 0);
 	info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
 	info->port.tty = NULL;
 
@@ -3297,12 +3297,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
 	
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):block_til_ready before block on %s count=%d\n",
-			 __FILE__,__LINE__, tty->driver->name, port->count );
+			 __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
 
 	spin_lock_irqsave(&info->irq_spinlock, flags);
 	if (!tty_hung_up_p(filp)) {
 		extra_count = true;
-		port->count--;
+		atomic_dec(&port->count);
 	}
 	spin_unlock_irqrestore(&info->irq_spinlock, flags);
 	port->blocked_open++;
@@ -3331,7 +3331,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
 		
 		if (debug_level >= DEBUG_LEVEL_INFO)
 			printk("%s(%d):block_til_ready blocking on %s count=%d\n",
-				 __FILE__,__LINE__, tty->driver->name, port->count );
+				 __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
 				 
 		tty_unlock(tty);
 		schedule();
@@ -3343,12 +3343,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
 	
 	/* FIXME: Racy on hangup during close wait */
 	if (extra_count)
-		port->count++;
+		atomic_inc(&port->count);
 	port->blocked_open--;
 	
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
-			 __FILE__,__LINE__, tty->driver->name, port->count );
+			 __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
 			 
 	if (!retval)
 		port->flags |= ASYNC_NORMAL_ACTIVE;
@@ -3400,7 +3400,7 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
 		
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):mgsl_open(%s), old ref count = %d\n",
-			 __FILE__,__LINE__,tty->driver->name, info->port.count);
+			 __FILE__,__LINE__,tty->driver->name, atomic_read(&info->port.count));
 
 	/* If port is closing, signal caller to try again */
 	if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
@@ -3419,10 +3419,10 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
 		spin_unlock_irqrestore(&info->netlock, flags);
 		goto cleanup;
 	}
-	info->port.count++;
+	atomic_inc(&info->port.count);
 	spin_unlock_irqrestore(&info->netlock, flags);
 
-	if (info->port.count == 1) {
+	if (atomic_read(&info->port.count) == 1) {
 		/* 1st open on this device, init hardware */
 		retval = startup(info);
 		if (retval < 0)
@@ -3446,8 +3446,8 @@ cleanup:
 	if (retval) {
 		if (tty->count == 1)
 			info->port.tty = NULL; /* tty layer will release tty struct */
-		if(info->port.count)
-			info->port.count--;
+		if (atomic_read(&info->port.count))
+			atomic_dec(&info->port.count);
 	}
 	
 	return retval;
@@ -7665,7 +7665,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
 	unsigned short new_crctype;
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	switch (encoding)
@@ -7760,7 +7760,7 @@ static int hdlcdev_open(struct net_device *dev)
 
 	/* arbitrate between network and tty opens */
 	spin_lock_irqsave(&info->netlock, flags);
-	if (info->port.count != 0 || info->netcount != 0) {
+	if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
 		printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
 		spin_unlock_irqrestore(&info->netlock, flags);
 		return -EBUSY;
@@ -7846,7 +7846,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	if (cmd != SIOCWANDEV)
diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index c359a91..959fc26 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -670,7 +670,7 @@ static int open(struct tty_struct *tty, struct file *filp)
 	tty->driver_data = info;
 	info->port.tty = tty;
 
-	DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count));
+	DBGINFO(("%s open, old ref count = %d\n", info->device_name, atomic_read(&info->port.count)));
 
 	/* If port is closing, signal caller to try again */
 	if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
@@ -691,10 +691,10 @@ static int open(struct tty_struct *tty, struct file *filp)
 		mutex_unlock(&info->port.mutex);
 		goto cleanup;
 	}
-	info->port.count++;
+	atomic_inc(&info->port.count);
 	spin_unlock_irqrestore(&info->netlock, flags);
 
-	if (info->port.count == 1) {
+	if (atomic_read(&info->port.count) == 1) {
 		/* 1st open on this device, init hardware */
 		retval = startup(info);
 		if (retval < 0) {
@@ -715,8 +715,8 @@ cleanup:
 	if (retval) {
 		if (tty->count == 1)
 			info->port.tty = NULL; /* tty layer will release tty struct */
-		if(info->port.count)
-			info->port.count--;
+		if(atomic_read(&info->port.count))
+			atomic_dec(&info->port.count);
 	}
 
 	DBGINFO(("%s open rc=%d\n", info->device_name, retval));
@@ -729,7 +729,7 @@ static void close(struct tty_struct *tty, struct file *filp)
 
 	if (sanity_check(info, tty->name, "close"))
 		return;
-	DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
+	DBGINFO(("%s close entry, count=%d\n", info->device_name, atomic_read(&info->port.count)));
 
 	if (tty_port_close_start(&info->port, tty, filp) == 0)
 		goto cleanup;
@@ -746,7 +746,7 @@ static void close(struct tty_struct *tty, struct file *filp)
 	tty_port_close_end(&info->port, tty);
 	info->port.tty = NULL;
 cleanup:
-	DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
+	DBGINFO(("%s close exit, count=%d\n", tty->driver->name, atomic_read(&info->port.count)));
 }
 
 static void hangup(struct tty_struct *tty)
@@ -764,7 +764,7 @@ static void hangup(struct tty_struct *tty)
 	shutdown(info);
 
 	spin_lock_irqsave(&info->port.lock, flags);
-	info->port.count = 0;
+	atomic_set(&info->port.count, 0);
 	info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
 	info->port.tty = NULL;
 	spin_unlock_irqrestore(&info->port.lock, flags);
@@ -1449,7 +1449,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
 	unsigned short new_crctype;
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	DBGINFO(("%s hdlcdev_attach\n", info->device_name));
@@ -1544,7 +1544,7 @@ static int hdlcdev_open(struct net_device *dev)
 
 	/* arbitrate between network and tty opens */
 	spin_lock_irqsave(&info->netlock, flags);
-	if (info->port.count != 0 || info->netcount != 0) {
+	if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
 		DBGINFO(("%s hdlc_open busy\n", dev->name));
 		spin_unlock_irqrestore(&info->netlock, flags);
 		return -EBUSY;
@@ -1629,7 +1629,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 	DBGINFO(("%s hdlcdev_ioctl\n", dev->name));
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	if (cmd != SIOCWANDEV)
@@ -2413,7 +2413,7 @@ static irqreturn_t slgt_interrupt(int dummy, void *dev_id)
 		if (port == NULL)
 			continue;
 		spin_lock(&port->lock);
-		if ((port->port.count || port->netcount) &&
+		if ((atomic_read(&port->port.count) || port->netcount) &&
 		    port->pending_bh && !port->bh_running &&
 		    !port->bh_requested) {
 			DBGISR(("%s bh queued\n", port->device_name));
@@ -3302,7 +3302,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 	spin_lock_irqsave(&info->lock, flags);
 	if (!tty_hung_up_p(filp)) {
 		extra_count = true;
-		port->count--;
+		atomic_dec(&port->count);
 	}
 	spin_unlock_irqrestore(&info->lock, flags);
 	port->blocked_open++;
@@ -3339,7 +3339,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 	remove_wait_queue(&port->open_wait, &wait);
 
 	if (extra_count)
-		port->count++;
+		atomic_inc(&port->count);
 	port->blocked_open--;
 
 	if (!retval)
diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
index 53ba853..3c30f6d 100644
--- a/drivers/tty/synclinkmp.c
+++ b/drivers/tty/synclinkmp.c
@@ -750,7 +750,7 @@ static int open(struct tty_struct *tty, struct file *filp)
 
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):%s open(), old ref count = %d\n",
-			 __FILE__,__LINE__,tty->driver->name, info->port.count);
+			 __FILE__,__LINE__,tty->driver->name, atomic_read(&info->port.count));
 
 	/* If port is closing, signal caller to try again */
 	if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
@@ -769,10 +769,10 @@ static int open(struct tty_struct *tty, struct file *filp)
 		spin_unlock_irqrestore(&info->netlock, flags);
 		goto cleanup;
 	}
-	info->port.count++;
+	atomic_inc(&info->port.count);
 	spin_unlock_irqrestore(&info->netlock, flags);
 
-	if (info->port.count == 1) {
+	if (atomic_read(&info->port.count) == 1) {
 		/* 1st open on this device, init hardware */
 		retval = startup(info);
 		if (retval < 0)
@@ -796,8 +796,8 @@ cleanup:
 	if (retval) {
 		if (tty->count == 1)
 			info->port.tty = NULL; /* tty layer will release tty struct */
-		if(info->port.count)
-			info->port.count--;
+		if(atomic_read(&info->port.count))
+			atomic_dec(&info->port.count);
 	}
 
 	return retval;
@@ -815,7 +815,7 @@ static void close(struct tty_struct *tty, struct file *filp)
 
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):%s close() entry, count=%d\n",
-			 __FILE__,__LINE__, info->device_name, info->port.count);
+			 __FILE__,__LINE__, info->device_name, atomic_read(&info->port.count));
 
 	if (tty_port_close_start(&info->port, tty, filp) == 0)
 		goto cleanup;
@@ -834,7 +834,7 @@ static void close(struct tty_struct *tty, struct file *filp)
 cleanup:
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__,
-			tty->driver->name, info->port.count);
+			tty->driver->name, atomic_read(&info->port.count));
 }
 
 /* Called by tty_hangup() when a hangup is signaled.
@@ -857,7 +857,7 @@ static void hangup(struct tty_struct *tty)
 	shutdown(info);
 
 	spin_lock_irqsave(&info->port.lock, flags);
-	info->port.count = 0;
+	atomic_set(&info->port.count, 0);
 	info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
 	info->port.tty = NULL;
 	spin_unlock_irqrestore(&info->port.lock, flags);
@@ -1565,7 +1565,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
 	unsigned short new_crctype;
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	switch (encoding)
@@ -1660,7 +1660,7 @@ static int hdlcdev_open(struct net_device *dev)
 
 	/* arbitrate between network and tty opens */
 	spin_lock_irqsave(&info->netlock, flags);
-	if (info->port.count != 0 || info->netcount != 0) {
+	if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
 		printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
 		spin_unlock_irqrestore(&info->netlock, flags);
 		return -EBUSY;
@@ -1746,7 +1746,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 		printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
 
 	/* return error if TTY interface open */
-	if (info->port.count)
+	if (atomic_read(&info->port.count))
 		return -EBUSY;
 
 	if (cmd != SIOCWANDEV)
@@ -2621,7 +2621,7 @@ static irqreturn_t synclinkmp_interrupt(int dummy, void *dev_id)
 		 * do not request bottom half processing if the
 		 * device is not open in a normal mode.
 		 */
-		if ( port && (port->port.count || port->netcount) &&
+		if ( port && (atomic_read(&port->port.count) || port->netcount) &&
 		     port->pending_bh && !port->bh_running &&
 		     !port->bh_requested ) {
 			if ( debug_level >= DEBUG_LEVEL_ISR )
@@ -3319,12 +3319,12 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):%s block_til_ready() before block, count=%d\n",
-			 __FILE__,__LINE__, tty->driver->name, port->count );
+			 __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
 
 	spin_lock_irqsave(&info->lock, flags);
 	if (!tty_hung_up_p(filp)) {
 		extra_count = true;
-		port->count--;
+		atomic_dec(&port->count);
 	}
 	spin_unlock_irqrestore(&info->lock, flags);
 	port->blocked_open++;
@@ -3353,7 +3353,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 
 		if (debug_level >= DEBUG_LEVEL_INFO)
 			printk("%s(%d):%s block_til_ready() count=%d\n",
-				 __FILE__,__LINE__, tty->driver->name, port->count );
+				 __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
 
 		tty_unlock(tty);
 		schedule();
@@ -3364,12 +3364,12 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
 	remove_wait_queue(&port->open_wait, &wait);
 
 	if (extra_count)
-		port->count++;
+		atomic_inc(&port->count);
 	port->blocked_open--;
 
 	if (debug_level >= DEBUG_LEVEL_INFO)
 		printk("%s(%d):%s block_til_ready() after, count=%d\n",
-			 __FILE__,__LINE__, tty->driver->name, port->count );
+			 __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
 
 	if (!retval)
 		port->flags |= ASYNC_NORMAL_ACTIVE;
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 454b658..57b1430 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -1084,7 +1084,7 @@ EXPORT_SYMBOL(unregister_sysrq_key);
 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
 				   size_t count, loff_t *ppos)
 {
-	if (count) {
+	if (count && capable(CAP_SYS_ADMIN)) {
 		char c;
 
 		if (get_user(c, buf))
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 3411071..86f2cf2 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -3475,7 +3475,7 @@ EXPORT_SYMBOL_GPL(get_current_tty);
 
 void tty_default_fops(struct file_operations *fops)
 {
-	*fops = tty_fops;
+	memcpy((void *)fops, &tty_fops, sizeof(tty_fops));
 }
 
 /*
diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 2d822aa..a566234 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -71,7 +71,7 @@ int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)
 	raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
 	tty_ldiscs[disc] = new_ldisc;
 	new_ldisc->num = disc;
-	new_ldisc->refcount = 0;
+	atomic_set(&new_ldisc->refcount, 0);
 	raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);
 
 	return ret;
@@ -99,7 +99,7 @@ int tty_unregister_ldisc(int disc)
 		return -EINVAL;
 
 	raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
-	if (tty_ldiscs[disc]->refcount)
+	if (atomic_read(&tty_ldiscs[disc]->refcount))
 		ret = -EBUSY;
 	else
 		tty_ldiscs[disc] = NULL;
@@ -120,7 +120,7 @@ static struct tty_ldisc_ops *get_ldops(int disc)
 	if (ldops) {
 		ret = ERR_PTR(-EAGAIN);
 		if (try_module_get(ldops->owner)) {
-			ldops->refcount++;
+			atomic_inc(&ldops->refcount);
 			ret = ldops;
 		}
 	}
@@ -133,7 +133,7 @@ static void put_ldops(struct tty_ldisc_ops *ldops)
 	unsigned long flags;
 
 	raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
-	ldops->refcount--;
+	atomic_dec(&ldops->refcount);
 	module_put(ldops->owner);
 	raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);
 }
diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
index 3f746c8..2f2fcaa 100644
--- a/drivers/tty/tty_port.c
+++ b/drivers/tty/tty_port.c
@@ -235,7 +235,7 @@ void tty_port_hangup(struct tty_port *port)
 	unsigned long flags;
 
 	spin_lock_irqsave(&port->lock, flags);
-	port->count = 0;
+	atomic_set(&port->count, 0);
 	port->flags &= ~ASYNC_NORMAL_ACTIVE;
 	tty = port->tty;
 	if (tty)
@@ -393,7 +393,7 @@ int tty_port_block_til_ready(struct tty_port *port,
 	/* The port lock protects the port counts */
 	spin_lock_irqsave(&port->lock, flags);
 	if (!tty_hung_up_p(filp))
-		port->count--;
+		atomic_dec(&port->count);
 	port->blocked_open++;
 	spin_unlock_irqrestore(&port->lock, flags);
 
@@ -435,7 +435,7 @@ int tty_port_block_til_ready(struct tty_port *port,
 	   we must not mess that up further */
 	spin_lock_irqsave(&port->lock, flags);
 	if (!tty_hung_up_p(filp))
-		port->count++;
+		atomic_inc(&port->count);
 	port->blocked_open--;
 	if (retval == 0)
 		port->flags |= ASYNC_NORMAL_ACTIVE;
@@ -469,19 +469,19 @@ int tty_port_close_start(struct tty_port *port,
 		return 0;
 	}
 
-	if (tty->count == 1 && port->count != 1) {
+	if (tty->count == 1 && atomic_read(&port->count) != 1) {
 		printk(KERN_WARNING
 		    "tty_port_close_start: tty->count = 1 port count = %d.\n",
-								port->count);
-		port->count = 1;
+								atomic_read(&port->count));
+		atomic_set(&port->count, 1);
 	}
-	if (--port->count < 0) {
+	if (atomic_dec_return(&port->count) < 0) {
 		printk(KERN_WARNING "tty_port_close_start: count = %d\n",
-								port->count);
-		port->count = 0;
+								atomic_read(&port->count));
+		atomic_set(&port->count, 0);
 	}
 
-	if (port->count) {
+	if (atomic_read(&port->count)) {
 		spin_unlock_irqrestore(&port->lock, flags);
 		return 0;
 	}
@@ -563,7 +563,7 @@ int tty_port_open(struct tty_port *port, struct tty_struct *tty,
 {
 	spin_lock_irq(&port->lock);
 	if (!tty_hung_up_p(filp))
-		++port->count;
+		atomic_inc(&port->count);
 	spin_unlock_irq(&port->lock);
 	tty_port_tty_set(port, tty);
 
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index d0e3a44..5f8b754 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -641,6 +641,16 @@ static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
 	     kbd->kbdmode == VC_OFF) &&
 	     value != KVAL(K_SAK))
 		return;		/* SAK is allowed even in raw mode */
+
+#if defined(CONFIG_GRKERNSEC_PROC) || defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
+	{
+		void *func = fn_handler[value];
+		if (func == fn_show_state || func == fn_show_ptregs ||
+		    func == fn_show_mem)
+			return;
+	}
+#endif
+
 	fn_handler[value](vc);
 }
 
@@ -1776,9 +1786,6 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
 	if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
 		return -EFAULT;
 
-	if (!capable(CAP_SYS_TTY_CONFIG))
-		perm = 0;
-
 	switch (cmd) {
 	case KDGKBENT:
 		/* Ensure another thread doesn't free it under us */
@@ -1793,6 +1800,9 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
 		spin_unlock_irqrestore(&kbd_event_lock, flags);
 		return put_user(val, &user_kbe->kb_value);
 	case KDSKBENT:
+		if (!capable(CAP_SYS_TTY_CONFIG))
+			perm = 0;
+
 		if (!perm)
 			return -EPERM;
 		if (!i && v == K_NOSUCHMAP) {
@@ -1883,9 +1893,6 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 	int i, j, k;
 	int ret;
 
-	if (!capable(CAP_SYS_TTY_CONFIG))
-		perm = 0;
-
 	kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
 	if (!kbs) {
 		ret = -ENOMEM;
@@ -1919,6 +1926,9 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
 		kfree(kbs);
 		return ((p && *p) ? -EOVERFLOW : 0);
 	case KDSKBSENT:
+		if (!capable(CAP_SYS_TTY_CONFIG))
+			perm = 0;
+
 		if (!perm) {
 			ret = -EPERM;
 			goto reterr;
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index a673e5b..36e5d32 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -25,6 +25,7 @@
 #include <linux/kobject.h>
 #include <linux/cdev.h>
 #include <linux/uio_driver.h>
+#include <asm/local.h>
 
 #define UIO_MAX_DEVICES		(1U << MINORBITS)
 
@@ -32,7 +33,7 @@ struct uio_device {
 	struct module		*owner;
 	struct device		*dev;
 	int			minor;
-	atomic_t		event;
+	atomic_unchecked_t	event;
 	struct fasync_struct	*async_queue;
 	wait_queue_head_t	wait;
 	struct uio_info		*info;
@@ -243,7 +244,7 @@ static ssize_t event_show(struct device *dev,
 			  struct device_attribute *attr, char *buf)
 {
 	struct uio_device *idev = dev_get_drvdata(dev);
-	return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event));
+	return sprintf(buf, "%u\n", (unsigned int)atomic_read_unchecked(&idev->event));
 }
 static DEVICE_ATTR_RO(event);
 
@@ -405,7 +406,7 @@ void uio_event_notify(struct uio_info *info)
 {
 	struct uio_device *idev = info->uio_dev;
 
-	atomic_inc(&idev->event);
+	atomic_inc_unchecked(&idev->event);
 	wake_up_interruptible(&idev->wait);
 	kill_fasync(&idev->async_queue, SIGIO, POLL_IN);
 }
@@ -458,7 +459,7 @@ static int uio_open(struct inode *inode, struct file *filep)
 	}
 
 	listener->dev = idev;
-	listener->event_count = atomic_read(&idev->event);
+	listener->event_count = atomic_read_unchecked(&idev->event);
 	filep->private_data = listener;
 
 	if (idev->info->open) {
@@ -509,7 +510,7 @@ static unsigned int uio_poll(struct file *filep, poll_table *wait)
 		return -EIO;
 
 	poll_wait(filep, &idev->wait, wait);
-	if (listener->event_count != atomic_read(&idev->event))
+	if (listener->event_count != atomic_read_unchecked(&idev->event))
 		return POLLIN | POLLRDNORM;
 	return 0;
 }
@@ -534,7 +535,7 @@ static ssize_t uio_read(struct file *filep, char __user *buf,
 	do {
 		set_current_state(TASK_INTERRUPTIBLE);
 
-		event_count = atomic_read(&idev->event);
+		event_count = atomic_read_unchecked(&idev->event);
 		if (event_count != listener->event_count) {
 			if (copy_to_user(buf, &event_count, count))
 				retval = -EFAULT;
@@ -591,9 +592,13 @@ static ssize_t uio_write(struct file *filep, const char __user *buf,
 static int uio_find_mem_index(struct vm_area_struct *vma)
 {
 	struct uio_device *idev = vma->vm_private_data;
+	unsigned long size;
 
 	if (vma->vm_pgoff < MAX_UIO_MAPS) {
-		if (idev->info->mem[vma->vm_pgoff].size == 0)
+		size = idev->info->mem[vma->vm_pgoff].size;
+		if (size == 0)
+			return -1;
+		if (vma->vm_end - vma->vm_start > size)
 			return -1;
 		return (int)vma->vm_pgoff;
 	}
@@ -825,7 +830,7 @@ int __uio_register_device(struct module *owner,
 	idev->owner = owner;
 	idev->info = info;
 	init_waitqueue_head(&idev->wait);
-	atomic_set(&idev->event, 0);
+	atomic_set_unchecked(&idev->event, 0);
 
 	ret = uio_get_minor(idev);
 	if (ret)
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 813d4d3..a71934f 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -472,7 +472,7 @@ static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev,
 		ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp);
 		if (ret < 2)
 			return -EINVAL;
-		if (index < 0 || index > 0x7f)
+		if (index > 0x7f)
 			return -EINVAL;
 		pos += tmp;
 
diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
index dada014..1d0d517 100644
--- a/drivers/usb/atm/usbatm.c
+++ b/drivers/usb/atm/usbatm.c
@@ -331,7 +331,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
 		if (printk_ratelimit())
 			atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n",
 				__func__, vpi, vci);
-		atomic_inc(&vcc->stats->rx_err);
+		atomic_inc_unchecked(&vcc->stats->rx_err);
 		return;
 	}
 
@@ -358,7 +358,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
 		if (length > ATM_MAX_AAL5_PDU) {
 			atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n",
 				  __func__, length, vcc);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto out;
 		}
 
@@ -367,14 +367,14 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
 		if (sarb->len < pdu_length) {
 			atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n",
 				  __func__, pdu_length, sarb->len, vcc);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto out;
 		}
 
 		if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) {
 			atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n",
 				  __func__, vcc);
-			atomic_inc(&vcc->stats->rx_err);
+			atomic_inc_unchecked(&vcc->stats->rx_err);
 			goto out;
 		}
 
@@ -386,7 +386,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
 			if (printk_ratelimit())
 				atm_err(instance, "%s: no memory for skb (length: %u)!\n",
 					__func__, length);
-			atomic_inc(&vcc->stats->rx_drop);
+			atomic_inc_unchecked(&vcc->stats->rx_drop);
 			goto out;
 		}
 
@@ -414,7 +414,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
 
 		vcc->push(vcc, skb);
 
-		atomic_inc(&vcc->stats->rx);
+		atomic_inc_unchecked(&vcc->stats->rx);
 	out:
 		skb_trim(sarb, 0);
 	}
@@ -612,7 +612,7 @@ static void usbatm_tx_process(unsigned long data)
 			struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc;
 
 			usbatm_pop(vcc, skb);
-			atomic_inc(&vcc->stats->tx);
+			atomic_inc_unchecked(&vcc->stats->tx);
 
 			skb = skb_dequeue(&instance->sndqueue);
 		}
@@ -756,11 +756,11 @@ static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t *pos, char *page
 	if (!left--)
 		return sprintf(page,
 			       "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n",
-			       atomic_read(&atm_dev->stats.aal5.tx),
-			       atomic_read(&atm_dev->stats.aal5.tx_err),
-			       atomic_read(&atm_dev->stats.aal5.rx),
-			       atomic_read(&atm_dev->stats.aal5.rx_err),
-			       atomic_read(&atm_dev->stats.aal5.rx_drop));
+			       atomic_read_unchecked(&atm_dev->stats.aal5.tx),
+			       atomic_read_unchecked(&atm_dev->stats.aal5.tx_err),
+			       atomic_read_unchecked(&atm_dev->stats.aal5.rx),
+			       atomic_read_unchecked(&atm_dev->stats.aal5.rx_err),
+			       atomic_read_unchecked(&atm_dev->stats.aal5.rx_drop));
 
 	if (!left--) {
 		if (instance->disconnected)
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
index 2a3bbdf..91d72cf 100644
--- a/drivers/usb/core/devices.c
+++ b/drivers/usb/core/devices.c
@@ -126,7 +126,7 @@ static const char format_endpt[] =
  * time it gets called.
  */
 static struct device_connect_event {
-	atomic_t count;
+	atomic_unchecked_t count;
 	wait_queue_head_t wait;
 } device_event = {
 	.count = ATOMIC_INIT(1),
@@ -164,7 +164,7 @@ static const struct class_info clas_info[] = {
 
 void usbfs_conn_disc_event(void)
 {
-	atomic_add(2, &device_event.count);
+	atomic_add_unchecked(2, &device_event.count);
 	wake_up(&device_event.wait);
 }
 
@@ -652,7 +652,7 @@ static unsigned int usb_device_poll(struct file *file,
 
 	poll_wait(file, &device_event.wait, wait);
 
-	event_count = atomic_read(&device_event.count);
+	event_count = atomic_read_unchecked(&device_event.count);
 	if (file->f_version != event_count) {
 		file->f_version = event_count;
 		return POLLIN | POLLRDNORM;
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index 0b59731..46ee7d1 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -187,7 +187,7 @@ static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
 	struct usb_dev_state *ps = file->private_data;
 	struct usb_device *dev = ps->dev;
 	ssize_t ret = 0;
-	unsigned len;
+	size_t len;
 	loff_t pos;
 	int i;
 
@@ -229,22 +229,22 @@ static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
 	for (i = 0; nbytes && i < dev->descriptor.bNumConfigurations; i++) {
 		struct usb_config_descriptor *config =
 			(struct usb_config_descriptor *)dev->rawdescriptors[i];
-		unsigned int length = le16_to_cpu(config->wTotalLength);
+		size_t length = le16_to_cpu(config->wTotalLength);
 
 		if (*ppos < pos + length) {
 
 			/* The descriptor may claim to be longer than it
 			 * really is.  Here is the actual allocated length. */
-			unsigned alloclen =
+			size_t alloclen =
 				le16_to_cpu(dev->config[i].desc.wTotalLength);
 
-			len = length - (*ppos - pos);
+			len = length + pos - *ppos;
 			if (len > nbytes)
 				len = nbytes;
 
 			/* Simply don't write (skip over) unallocated parts */
 			if (alloclen > (*ppos - pos)) {
-				alloclen -= (*ppos - pos);
+				alloclen = alloclen + pos - *ppos;
 				if (copy_to_user(buf,
 				    dev->rawdescriptors[i] + (*ppos - pos),
 				    min(len, alloclen))) {
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index bec31e2..b8091cd 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1554,7 +1554,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
 	 */
 	usb_get_urb(urb);
 	atomic_inc(&urb->use_count);
-	atomic_inc(&urb->dev->urbnum);
+	atomic_inc_unchecked(&urb->dev->urbnum);
 	usbmon_urb_submit(&hcd->self, urb);
 
 	/* NOTE requirements on root-hub callers (usbfs and the hub
@@ -1581,7 +1581,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
 		urb->hcpriv = NULL;
 		INIT_LIST_HEAD(&urb->urb_list);
 		atomic_dec(&urb->use_count);
-		atomic_dec(&urb->dev->urbnum);
+		atomic_dec_unchecked(&urb->dev->urbnum);
 		if (atomic_read(&urb->reject))
 			wake_up(&usb_kill_urb_queue);
 		usb_put_urb(urb);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 27f2171..e3dfc22 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -27,6 +27,7 @@
 #include <linux/freezer.h>
 #include <linux/random.h>
 #include <linux/pm_qos.h>
+#include <linux/grsecurity.h>
 
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
@@ -4644,6 +4645,10 @@ static void hub_port_connect(struct usb_hub *hub, int port1, u16 portstatus,
 			goto done;
 		return;
 	}
+
+	if (gr_handle_new_usb())
+		goto done;
+
 	if (hub_is_superspeed(hub->hdev))
 		unit_load = 150;
 	else
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 0c8a7fc..c45b40a 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -128,7 +128,7 @@ static int usb_internal_control_msg(struct usb_device *usb_dev,
  * Return: If successful, the number of bytes transferred. Otherwise, a negative
  * error number.
  */
-int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
+int __intentional_overflow(-1) usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
 		    __u8 requesttype, __u16 value, __u16 index, void *data,
 		    __u16 size, int timeout)
 {
@@ -180,7 +180,7 @@ EXPORT_SYMBOL_GPL(usb_control_msg);
  * If successful, 0. Otherwise a negative error number. The number of actual
  * bytes transferred will be stored in the @actual_length parameter.
  */
-int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
+int __intentional_overflow(-1) usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
 		      void *data, int len, int *actual_length, int timeout)
 {
 	return usb_bulk_msg(usb_dev, pipe, data, len, actual_length, timeout);
@@ -220,7 +220,7 @@ EXPORT_SYMBOL_GPL(usb_interrupt_msg);
  * bytes transferred will be stored in the @actual_length parameter.
  *
  */
-int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
+int __intentional_overflow(-1) usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
 		 void *data, int len, int *actual_length, int timeout)
 {
 	struct urb *urb;
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index 1236c60..d47a51c 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -244,7 +244,7 @@ static ssize_t urbnum_show(struct device *dev, struct device_attribute *attr,
 	struct usb_device *udev;
 
 	udev = to_usb_device(dev);
-	return sprintf(buf, "%d\n", atomic_read(&udev->urbnum));
+	return sprintf(buf, "%d\n", atomic_read_unchecked(&udev->urbnum));
 }
 static DEVICE_ATTR_RO(urbnum);
 
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 4d11449..f4ccabf 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -433,7 +433,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
 	set_dev_node(&dev->dev, dev_to_node(bus->controller));
 	dev->state = USB_STATE_ATTACHED;
 	dev->lpm_disable_count = 1;
-	atomic_set(&dev->urbnum, 0);
+	atomic_set_unchecked(&dev->urbnum, 0);
 
 	INIT_LIST_HEAD(&dev->ep0.urb_list);
 	dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index dab7927..6f53afc 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -615,8 +615,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
 		if (!usb_endpoint_xfer_isoc(desc))
 			return 0;
 
-		memset(&trb_link, 0, sizeof(trb_link));
-
 		/* Link TRB for ISOC. The HWO bit is never reset */
 		trb_st_hw = &dep->trb_pool[0];
 
diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
index 8cfc319..4868255 100644
--- a/drivers/usb/early/ehci-dbgp.c
+++ b/drivers/usb/early/ehci-dbgp.c
@@ -98,7 +98,8 @@ static inline u32 dbgp_len_update(u32 x, u32 len)
 
 #ifdef CONFIG_KGDB
 static struct kgdb_io kgdbdbgp_io_ops;
-#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops)
+static struct kgdb_io kgdbdbgp_io_ops_console;
+#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops || dbg_io_ops == &kgdbdbgp_io_ops_console)
 #else
 #define dbgp_kgdb_mode (0)
 #endif
@@ -1043,6 +1044,13 @@ static struct kgdb_io kgdbdbgp_io_ops = {
 	.write_char = kgdbdbgp_write_char,
 };
 
+static struct kgdb_io kgdbdbgp_io_ops_console = {
+	.name = "kgdbdbgp",
+	.read_char = kgdbdbgp_read_char,
+	.write_char = kgdbdbgp_write_char,
+	.is_console = 1
+};
+
 static int kgdbdbgp_wait_time;
 
 static int __init kgdbdbgp_parse_config(char *str)
@@ -1058,8 +1066,10 @@ static int __init kgdbdbgp_parse_config(char *str)
 		ptr++;
 		kgdbdbgp_wait_time = simple_strtoul(ptr, &ptr, 10);
 	}
-	kgdb_register_io_module(&kgdbdbgp_io_ops);
-	kgdbdbgp_io_ops.is_console = early_dbgp_console.index != -1;
+	if (early_dbgp_console.index != -1)
+		kgdb_register_io_module(&kgdbdbgp_io_ops_console);
+	else
+		kgdb_register_io_module(&kgdbdbgp_io_ops);
 
 	return 0;
 }
diff --git a/drivers/usb/gadget/f_uac1.c b/drivers/usb/gadget/f_uac1.c
index 2b4c82d..06a8ee6 100644
--- a/drivers/usb/gadget/f_uac1.c
+++ b/drivers/usb/gadget/f_uac1.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/device.h>
 #include <linux/atomic.h>
+#include <linux/module.h>
 
 #include "u_uac1.h"
 
diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
index ad0aca8..8ff84865 100644
--- a/drivers/usb/gadget/u_serial.c
+++ b/drivers/usb/gadget/u_serial.c
@@ -733,9 +733,9 @@ static int gs_open(struct tty_struct *tty, struct file *file)
 			spin_lock_irq(&port->port_lock);
 
 			/* already open?  Great. */
-			if (port->port.count) {
+			if (atomic_read(&port->port.count)) {
 				status = 0;
-				port->port.count++;
+				atomic_inc(&port->port.count);
 
 			/* currently opening/closing? wait ... */
 			} else if (port->openclose) {
@@ -794,7 +794,7 @@ static int gs_open(struct tty_struct *tty, struct file *file)
 	tty->driver_data = port;
 	port->port.tty = tty;
 
-	port->port.count = 1;
+	atomic_set(&port->port.count, 1);
 	port->openclose = false;
 
 	/* if connected, start the I/O stream */
@@ -836,11 +836,11 @@ static void gs_close(struct tty_struct *tty, struct file *file)
 
 	spin_lock_irq(&port->port_lock);
 
-	if (port->port.count != 1) {
-		if (port->port.count == 0)
+	if (atomic_read(&port->port.count) != 1) {
+		if (atomic_read(&port->port.count) == 0)
 			WARN_ON(1);
 		else
-			--port->port.count;
+			atomic_dec(&port->port.count);
 		goto exit;
 	}
 
@@ -850,7 +850,7 @@ static void gs_close(struct tty_struct *tty, struct file *file)
 	 * and sleep if necessary
 	 */
 	port->openclose = true;
-	port->port.count = 0;
+	atomic_set(&port->port.count, 0);
 
 	gser = port->port_usb;
 	if (gser && gser->disconnect)
@@ -1066,7 +1066,7 @@ static int gs_closed(struct gs_port *port)
 	int cond;
 
 	spin_lock_irq(&port->port_lock);
-	cond = (port->port.count == 0) && !port->openclose;
+	cond = (atomic_read(&port->port.count) == 0) && !port->openclose;
 	spin_unlock_irq(&port->port_lock);
 	return cond;
 }
@@ -1209,7 +1209,7 @@ int gserial_connect(struct gserial *gser, u8 port_num)
 	/* if it's already open, start I/O ... and notify the serial
 	 * protocol about open/close status (connect/disconnect).
 	 */
-	if (port->port.count) {
+	if (atomic_read(&port->port.count)) {
 		pr_debug("gserial_connect: start ttyGS%d\n", port->port_num);
 		gs_start_io(port);
 		if (gser->connect)
@@ -1256,7 +1256,7 @@ void gserial_disconnect(struct gserial *gser)
 
 	port->port_usb = NULL;
 	gser->ioport = NULL;
-	if (port->port.count > 0 || port->openclose) {
+	if (atomic_read(&port->port.count) > 0 || port->openclose) {
 		wake_up_interruptible(&port->drain_wait);
 		if (port->port.tty)
 			tty_hangup(port->port.tty);
@@ -1272,7 +1272,7 @@ void gserial_disconnect(struct gserial *gser)
 
 	/* finally, free any unused/unusable I/O buffers */
 	spin_lock_irqsave(&port->port_lock, flags);
-	if (port->port.count == 0 && !port->openclose)
+	if (atomic_read(&port->port.count) == 0 && !port->openclose)
 		gs_buf_free(&port->port_write_buf);
 	gs_free_requests(gser->out, &port->read_pool, NULL);
 	gs_free_requests(gser->out, &port->read_queue, NULL);
diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c
index 7a55fea..cc0ed4f 100644
--- a/drivers/usb/gadget/u_uac1.c
+++ b/drivers/usb/gadget/u_uac1.c
@@ -16,6 +16,7 @@
 #include <linux/ctype.h>
 #include <linux/random.h>
 #include <linux/syscalls.h>
+#include <linux/module.h>
 
 #include "u_uac1.h"
 
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 6130b75..3b60008 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -771,7 +771,7 @@ static struct urb *request_single_step_set_feature_urb(
 	urb->transfer_flags = URB_DIR_IN;
 	usb_get_urb(urb);
 	atomic_inc(&urb->use_count);
-	atomic_inc(&urb->dev->urbnum);
+	atomic_inc_unchecked(&urb->dev->urbnum);
 	urb->setup_dma = dma_map_single(
 			hcd->self.controller,
 			urb->setup_packet,
@@ -838,7 +838,7 @@ static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
 	urb->status = -EINPROGRESS;
 	usb_get_urb(urb);
 	atomic_inc(&urb->use_count);
-	atomic_inc(&urb->dev->urbnum);
+	atomic_inc_unchecked(&urb->dev->urbnum);
 	retval = submit_single_step_set_feature(hcd, urb, 0);
 	if (!retval && !wait_for_completion_timeout(&done,
 						msecs_to_jiffies(2000))) {
diff --git a/drivers/usb/host/hwa-hc.c b/drivers/usb/host/hwa-hc.c
index d0d8fad..668ef7b 100644
--- a/drivers/usb/host/hwa-hc.c
+++ b/drivers/usb/host/hwa-hc.c
@@ -337,7 +337,10 @@ static int __hwahc_op_bwa_set(struct wusbhc *wusbhc, s8 stream_index,
 	struct hwahc *hwahc = container_of(wusbhc, struct hwahc, wusbhc);
 	struct wahc *wa = &hwahc->wa;
 	struct device *dev = &wa->usb_iface->dev;
-	u8 mas_le[UWB_NUM_MAS/8];
+	u8 *mas_le = kmalloc(UWB_NUM_MAS/8, GFP_KERNEL);
+
+	if (mas_le == NULL)
+		return -ENOMEM;
 
 	/* Set the stream index */
 	result = usb_control_msg(wa->usb_dev, usb_sndctrlpipe(wa->usb_dev, 0),
@@ -356,10 +359,12 @@ static int __hwahc_op_bwa_set(struct wusbhc *wusbhc, s8 stream_index,
 			WUSB_REQ_SET_WUSB_MAS,
 			USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE,
 			0, wa->usb_iface->cur_altsetting->desc.bInterfaceNumber,
-			mas_le, 32, USB_CTRL_SET_TIMEOUT);
+			mas_le, UWB_NUM_MAS/8, USB_CTRL_SET_TIMEOUT);
 	if (result < 0)
 		dev_err(dev, "Cannot set WUSB MAS allocation: %d\n", result);
 out:
+	kfree(mas_le);
+
 	return result;
 }
 
diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
index b3d245e..99549ed 100644
--- a/drivers/usb/misc/appledisplay.c
+++ b/drivers/usb/misc/appledisplay.c
@@ -84,7 +84,7 @@ struct appledisplay {
 	struct mutex sysfslock;		/* concurrent read and write */
 };
 
-static atomic_t count_displays = ATOMIC_INIT(0);
+static atomic_unchecked_t count_displays = ATOMIC_INIT(0);
 static struct workqueue_struct *wq;
 
 static void appledisplay_complete(struct urb *urb)
@@ -288,7 +288,7 @@ static int appledisplay_probe(struct usb_interface *iface,
 
 	/* Register backlight device */
 	snprintf(bl_name, sizeof(bl_name), "appledisplay%d",
-		atomic_inc_return(&count_displays) - 1);
+		atomic_inc_return_unchecked(&count_displays) - 1);
 	memset(&props, 0, sizeof(struct backlight_properties));
 	props.type = BACKLIGHT_RAW;
 	props.max_brightness = 0xff;
diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
index 8d7fc48..01c4986 100644
--- a/drivers/usb/serial/console.c
+++ b/drivers/usb/serial/console.c
@@ -123,7 +123,7 @@ static int usb_console_setup(struct console *co, char *options)
 
 	info->port = port;
 
-	++port->port.count;
+	atomic_inc(&port->port.count);
 	if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) {
 		if (serial->type->set_termios) {
 			/*
@@ -167,7 +167,7 @@ static int usb_console_setup(struct console *co, char *options)
 	}
 	/* Now that any required fake tty operations are completed restore
 	 * the tty port count */
-	--port->port.count;
+	atomic_dec(&port->port.count);
 	/* The console is special in terms of closing the device so
 	 * indicate this port is now acting as a system console. */
 	port->port.console = 1;
@@ -180,7 +180,7 @@ static int usb_console_setup(struct console *co, char *options)
  free_tty:
 	kfree(tty);
  reset_open_count:
-	port->port.count = 0;
+	atomic_set(&port->port.count, 0);
 	usb_autopm_put_interface(serial->interface);
  error_get_interface:
 	usb_serial_put(serial);
@@ -191,7 +191,7 @@ static int usb_console_setup(struct console *co, char *options)
 static void usb_console_write(struct console *co,
 					const char *buf, unsigned count)
 {
-	static struct usbcons_info *info = &usbcons_info;
+	struct usbcons_info *info = &usbcons_info;
 	struct usb_serial_port *port = info->port;
 	struct usb_serial *serial;
 	int retval = -ENODEV;
diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
index 307e339..6aa97cb 100644
--- a/drivers/usb/storage/usb.h
+++ b/drivers/usb/storage/usb.h
@@ -63,7 +63,7 @@ struct us_unusual_dev {
 	__u8  useProtocol;
 	__u8  useTransport;
 	int (*initFunction)(struct us_data *);
-};
+} __do_const;
 
 
 /* Dynamic bitflag definitions (us->dflags): used in set_bit() etc. */
diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
index f2a8d29..7bc3fe7 100644
--- a/drivers/usb/wusbcore/wa-hc.h
+++ b/drivers/usb/wusbcore/wa-hc.h
@@ -240,7 +240,7 @@ struct wahc {
 	spinlock_t xfer_list_lock;
 	struct work_struct xfer_enqueue_work;
 	struct work_struct xfer_error_work;
-	atomic_t xfer_id_count;
+	atomic_unchecked_t xfer_id_count;
 
 	kernel_ulong_t	quirks;
 };
@@ -305,7 +305,7 @@ static inline void wa_init(struct wahc *wa)
 	INIT_WORK(&wa->xfer_enqueue_work, wa_urb_enqueue_run);
 	INIT_WORK(&wa->xfer_error_work, wa_process_errored_transfers_run);
 	wa->dto_in_use = 0;
-	atomic_set(&wa->xfer_id_count, 1);
+	atomic_set_unchecked(&wa->xfer_id_count, 1);
 	/* init the buf in URBs */
 	for (index = 0; index < WA_MAX_BUF_IN_URBS; ++index)
 		usb_init_urb(&(wa->buf_in_urbs[index]));
diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
index 3e2e4ed..060c9b8 100644
--- a/drivers/usb/wusbcore/wa-xfer.c
+++ b/drivers/usb/wusbcore/wa-xfer.c
@@ -314,7 +314,7 @@ static void wa_xfer_completion(struct wa_xfer *xfer)
  */
 static void wa_xfer_id_init(struct wa_xfer *xfer)
 {
-	xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count);
+	xfer->id = atomic_add_return_unchecked(1, &xfer->wa->xfer_id_count);
 }
 
 /* Return the xfer's ID. */
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index f018d8d..ccab63f 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -481,7 +481,7 @@ static int vfio_group_nb_add_dev(struct vfio_group *group, struct device *dev)
 		return 0;
 
 	/* TODO Prevent device auto probing */
-	WARN("Device %s added to live group %d!\n", dev_name(dev),
+	WARN(1, "Device %s added to live group %d!\n", dev_name(dev),
 	     iommu_group_id(group->iommu_group));
 
 	return 0;
diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
index 5174eba..451e6bc 100644
--- a/drivers/vhost/vringh.c
+++ b/drivers/vhost/vringh.c
@@ -530,17 +530,17 @@ static inline void __vringh_notify_disable(struct vringh *vrh,
 /* Userspace access helpers: in this case, addresses are really userspace. */
 static inline int getu16_user(u16 *val, const u16 *p)
 {
-	return get_user(*val, (__force u16 __user *)p);
+	return get_user(*val, (u16 __force_user *)p);
 }
 
 static inline int putu16_user(u16 *p, u16 val)
 {
-	return put_user(val, (__force u16 __user *)p);
+	return put_user(val, (u16 __force_user *)p);
 }
 
 static inline int copydesc_user(void *dst, const void *src, size_t len)
 {
-	return copy_from_user(dst, (__force void __user *)src, len) ?
+	return copy_from_user(dst, (void __force_user *)src, len) ?
 		-EFAULT : 0;
 }
 
@@ -548,19 +548,19 @@ static inline int putused_user(struct vring_used_elem *dst,
 			       const struct vring_used_elem *src,
 			       unsigned int num)
 {
-	return copy_to_user((__force void __user *)dst, src,
+	return copy_to_user((void __force_user *)dst, src,
 			    sizeof(*dst) * num) ? -EFAULT : 0;
 }
 
 static inline int xfer_from_user(void *src, void *dst, size_t len)
 {
-	return copy_from_user(dst, (__force void __user *)src, len) ?
+	return copy_from_user(dst, (void __force_user *)src, len) ?
 		-EFAULT : 0;
 }
 
 static inline int xfer_to_user(void *dst, void *src, size_t len)
 {
-	return copy_to_user((__force void __user *)dst, src, len) ?
+	return copy_to_user((void __force_user *)dst, src, len) ?
 		-EFAULT : 0;
 }
 
@@ -596,9 +596,9 @@ int vringh_init_user(struct vringh *vrh, u32 features,
 	vrh->last_used_idx = 0;
 	vrh->vring.num = num;
 	/* vring expects kernel addresses, but only used via accessors. */
-	vrh->vring.desc = (__force struct vring_desc *)desc;
-	vrh->vring.avail = (__force struct vring_avail *)avail;
-	vrh->vring.used = (__force struct vring_used *)used;
+	vrh->vring.desc = (__force_kernel struct vring_desc *)desc;
+	vrh->vring.avail = (__force_kernel struct vring_avail *)avail;
+	vrh->vring.used = (__force_kernel struct vring_used *)used;
 	return 0;
 }
 EXPORT_SYMBOL(vringh_init_user);
@@ -800,7 +800,7 @@ static inline int getu16_kern(u16 *val, const u16 *p)
 
 static inline int putu16_kern(u16 *p, u16 val)
 {
-	ACCESS_ONCE(*p) = val;
+	ACCESS_ONCE_RW(*p) = val;
 	return 0;
 }
 
diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
index 84a110a..96312c3 100644
--- a/drivers/video/backlight/kb3886_bl.c
+++ b/drivers/video/backlight/kb3886_bl.c
@@ -78,7 +78,7 @@ static struct kb3886bl_machinfo *bl_machinfo;
 static unsigned long kb3886bl_flags;
 #define KB3886BL_SUSPENDED     0x01
 
-static struct dmi_system_id kb3886bl_device_table[] __initdata = {
+static const struct dmi_system_id kb3886bl_device_table[] __initconst = {
 	{
 		.ident = "Sahara Touch-iT",
 		.matches = {
diff --git a/drivers/video/fbdev/arcfb.c b/drivers/video/fbdev/arcfb.c
index 1b0b233..6f34c2c 100644
--- a/drivers/video/fbdev/arcfb.c
+++ b/drivers/video/fbdev/arcfb.c
@@ -458,7 +458,7 @@ static ssize_t arcfb_write(struct fb_info *info, const char __user *buf,
 		return -ENOSPC;
 
 	err = 0;
-	if ((count + p) > fbmemlength) {
+	if (count > (fbmemlength - p)) {
 		count = fbmemlength - p;
 		err = -ENOSPC;
 	}
diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
index 52108be..c7c110d 100644
--- a/drivers/video/fbdev/aty/aty128fb.c
+++ b/drivers/video/fbdev/aty/aty128fb.c
@@ -149,7 +149,7 @@ enum {
 };
 
 /* Must match above enum */
-static char * const r128_family[] = {
+static const char * const r128_family[] = {
 	"AGP",
 	"PCI",
 	"PRO AGP",
diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c
index c3d0074..0b9077e 100644
--- a/drivers/video/fbdev/aty/atyfb_base.c
+++ b/drivers/video/fbdev/aty/atyfb_base.c
@@ -1326,10 +1326,14 @@ static int atyfb_set_par(struct fb_info *info)
 	par->accel_flags = var->accel_flags; /* hack */
 
 	if (var->accel_flags) {
-		info->fbops->fb_sync = atyfb_sync;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_sync = atyfb_sync;
+		pax_close_kernel();
 		info->flags &= ~FBINFO_HWACCEL_DISABLED;
 	} else {
-		info->fbops->fb_sync = NULL;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_sync = NULL;
+		pax_close_kernel();
 		info->flags |= FBINFO_HWACCEL_DISABLED;
 	}
 
diff --git a/drivers/video/fbdev/aty/mach64_cursor.c b/drivers/video/fbdev/aty/mach64_cursor.c
index 2fa0317..4983f2a 100644
--- a/drivers/video/fbdev/aty/mach64_cursor.c
+++ b/drivers/video/fbdev/aty/mach64_cursor.c
@@ -8,6 +8,7 @@
 #include "../core/fb_draw.h"
 
 #include <asm/io.h>
+#include <asm/pgtable.h>
 
 #ifdef __sparc__
 #include <asm/fbio.h>
@@ -218,7 +219,9 @@ int aty_init_cursor(struct fb_info *info)
 	info->sprite.buf_align = 16; 	/* and 64 lines tall. */
 	info->sprite.flags = FB_PIXMAP_IO;
 
-	info->fbops->fb_cursor = atyfb_cursor;
+	pax_open_kernel();
+	*(void **)&info->fbops->fb_cursor = atyfb_cursor;
+	pax_close_kernel();
 
 	return 0;
 }
diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c
index 900aa4e..6d49418 100644
--- a/drivers/video/fbdev/core/fb_defio.c
+++ b/drivers/video/fbdev/core/fb_defio.c
@@ -206,7 +206,9 @@ void fb_deferred_io_init(struct fb_info *info)
 
 	BUG_ON(!fbdefio);
 	mutex_init(&fbdefio->lock);
-	info->fbops->fb_mmap = fb_deferred_io_mmap;
+	pax_open_kernel();
+	*(void **)&info->fbops->fb_mmap = fb_deferred_io_mmap;
+	pax_close_kernel();
 	INIT_DELAYED_WORK(&info->deferred_work, fb_deferred_io_work);
 	INIT_LIST_HEAD(&fbdefio->pagelist);
 	if (fbdefio->delay == 0) /* set a default of 1 s */
@@ -237,7 +239,7 @@ void fb_deferred_io_cleanup(struct fb_info *info)
 		page->mapping = NULL;
 	}
 
-	info->fbops->fb_mmap = NULL;
+	*(void **)&info->fbops->fb_mmap = NULL;
 	mutex_destroy(&fbdefio->lock);
 }
 EXPORT_SYMBOL_GPL(fb_deferred_io_cleanup);
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index b5e85f6..290f8c7 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -1301,7 +1301,7 @@ static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix,
 	__u32 data;
 	int err;
 
-	err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id));
+	err = copy_to_user(fix32->id, &fix->id, sizeof(fix32->id));
 
 	data = (__u32) (unsigned long) fix->smem_start;
 	err |= put_user(data, &fix32->smem_start);
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index e23392e..8a77540 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -235,7 +235,7 @@ static uint screen_fb_size;
 static inline int synthvid_send(struct hv_device *hdev,
 				struct synthvid_msg *msg)
 {
-	static atomic64_t request_id = ATOMIC64_INIT(0);
+	static atomic64_unchecked_t request_id = ATOMIC64_INIT(0);
 	int ret;
 
 	msg->pipe_hdr.type = PIPE_MSG_DATA;
@@ -243,7 +243,7 @@ static inline int synthvid_send(struct hv_device *hdev,
 
 	ret = vmbus_sendpacket(hdev->channel, msg,
 			       msg->vid_hdr.size + sizeof(struct pipe_msg_hdr),
-			       atomic64_inc_return(&request_id),
+			       atomic64_inc_return_unchecked(&request_id),
 			       VM_PKT_DATA_INBAND, 0);
 
 	if (ret)
diff --git a/drivers/video/fbdev/i810/i810_accel.c b/drivers/video/fbdev/i810/i810_accel.c
index 7672d2e..b56437f 100644
--- a/drivers/video/fbdev/i810/i810_accel.c
+++ b/drivers/video/fbdev/i810/i810_accel.c
@@ -73,6 +73,7 @@ static inline int wait_for_space(struct fb_info *info, u32 space)
 		}
 	}
 	printk("ringbuffer lockup!!!\n");
+	printk("head:%u tail:%u iring.size:%u space:%u\n", head, tail, par->iring.size, space);
 	i810_report_error(mmio); 
 	par->dev_flags |= LOCKUP;
 	info->pixmap.scan_align = 1;
diff --git a/drivers/video/fbdev/matrox/matroxfb_DAC1064.c b/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
index a01147f..5d896f8 100644
--- a/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
+++ b/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
@@ -1088,14 +1088,20 @@ static void MGAG100_restore(struct matrox_fb_info *minfo)
 
 #ifdef CONFIG_FB_MATROX_MYSTIQUE
 struct matrox_switch matrox_mystique = {
-	MGA1064_preinit, MGA1064_reset, MGA1064_init, MGA1064_restore,
+	.preinit = MGA1064_preinit,
+	.reset = MGA1064_reset,
+	.init = MGA1064_init,
+	.restore = MGA1064_restore,
 };
 EXPORT_SYMBOL(matrox_mystique);
 #endif
 
 #ifdef CONFIG_FB_MATROX_G
 struct matrox_switch matrox_G100 = {
-	MGAG100_preinit, MGAG100_reset, MGAG100_init, MGAG100_restore,
+	.preinit = MGAG100_preinit,
+	.reset = MGAG100_reset,
+	.init = MGAG100_init,
+	.restore = MGAG100_restore,
 };
 EXPORT_SYMBOL(matrox_G100);
 #endif
diff --git a/drivers/video/fbdev/matrox/matroxfb_Ti3026.c b/drivers/video/fbdev/matrox/matroxfb_Ti3026.c
index 195ad7c..09743fc 100644
--- a/drivers/video/fbdev/matrox/matroxfb_Ti3026.c
+++ b/drivers/video/fbdev/matrox/matroxfb_Ti3026.c
@@ -738,7 +738,10 @@ static int Ti3026_preinit(struct matrox_fb_info *minfo)
 }
 
 struct matrox_switch matrox_millennium = {
-	Ti3026_preinit, Ti3026_reset, Ti3026_init, Ti3026_restore
+	.preinit = Ti3026_preinit,
+	.reset = Ti3026_reset,
+	.init = Ti3026_init,
+	.restore = Ti3026_restore
 };
 EXPORT_SYMBOL(matrox_millennium);
 #endif
diff --git a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
index fe92eed..106e085 100644
--- a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
+++ b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
@@ -312,14 +312,18 @@ void mb862xxfb_init_accel(struct fb_info *info, int xres)
 	struct mb862xxfb_par *par = info->par;
 
 	if (info->var.bits_per_pixel == 32) {
-		info->fbops->fb_fillrect = cfb_fillrect;
-		info->fbops->fb_copyarea = cfb_copyarea;
-		info->fbops->fb_imageblit = cfb_imageblit;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_fillrect = cfb_fillrect;
+		*(void **)&info->fbops->fb_copyarea = cfb_copyarea;
+		*(void **)&info->fbops->fb_imageblit = cfb_imageblit;
+		pax_close_kernel();
 	} else {
 		outreg(disp, GC_L0EM, 3);
-		info->fbops->fb_fillrect = mb86290fb_fillrect;
-		info->fbops->fb_copyarea = mb86290fb_copyarea;
-		info->fbops->fb_imageblit = mb86290fb_imageblit;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_fillrect = mb86290fb_fillrect;
+		*(void **)&info->fbops->fb_copyarea = mb86290fb_copyarea;
+		*(void **)&info->fbops->fb_imageblit = mb86290fb_imageblit;
+		pax_close_kernel();
 	}
 	outreg(draw, GDC_REG_DRAW_BASE, 0);
 	outreg(draw, GDC_REG_MODE_MISC, 0x8000);
diff --git a/drivers/video/fbdev/nvidia/nvidia.c b/drivers/video/fbdev/nvidia/nvidia.c
index def0412..fed6529 100644
--- a/drivers/video/fbdev/nvidia/nvidia.c
+++ b/drivers/video/fbdev/nvidia/nvidia.c
@@ -669,19 +669,23 @@ static int nvidiafb_set_par(struct fb_info *info)
 	info->fix.line_length = (info->var.xres_virtual *
 				 info->var.bits_per_pixel) >> 3;
 	if (info->var.accel_flags) {
-		info->fbops->fb_imageblit = nvidiafb_imageblit;
-		info->fbops->fb_fillrect = nvidiafb_fillrect;
-		info->fbops->fb_copyarea = nvidiafb_copyarea;
-		info->fbops->fb_sync = nvidiafb_sync;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_imageblit = nvidiafb_imageblit;
+		*(void **)&info->fbops->fb_fillrect = nvidiafb_fillrect;
+		*(void **)&info->fbops->fb_copyarea = nvidiafb_copyarea;
+		*(void **)&info->fbops->fb_sync = nvidiafb_sync;
+		pax_close_kernel();
 		info->pixmap.scan_align = 4;
 		info->flags &= ~FBINFO_HWACCEL_DISABLED;
 		info->flags |= FBINFO_READS_FAST;
 		NVResetGraphics(info);
 	} else {
-		info->fbops->fb_imageblit = cfb_imageblit;
-		info->fbops->fb_fillrect = cfb_fillrect;
-		info->fbops->fb_copyarea = cfb_copyarea;
-		info->fbops->fb_sync = NULL;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_imageblit = cfb_imageblit;
+		*(void **)&info->fbops->fb_fillrect = cfb_fillrect;
+		*(void **)&info->fbops->fb_copyarea = cfb_copyarea;
+		*(void **)&info->fbops->fb_sync = NULL;
+		pax_close_kernel();
 		info->pixmap.scan_align = 1;
 		info->flags |= FBINFO_HWACCEL_DISABLED;
 		info->flags &= ~FBINFO_READS_FAST;
@@ -1173,8 +1177,11 @@ static int nvidia_set_fbinfo(struct fb_info *info)
 	info->pixmap.size = 8 * 1024;
 	info->pixmap.flags = FB_PIXMAP_SYSTEM;
 
-	if (!hwcur)
-	    info->fbops->fb_cursor = NULL;
+	if (!hwcur) {
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_cursor = NULL;
+		pax_close_kernel();
+	}
 
 	info->var.accel_flags = (!noaccel);
 
diff --git a/drivers/video/fbdev/omap2/dss/display.c b/drivers/video/fbdev/omap2/dss/display.c
index 2412a0d..294215b 100644
--- a/drivers/video/fbdev/omap2/dss/display.c
+++ b/drivers/video/fbdev/omap2/dss/display.c
@@ -161,12 +161,14 @@ int omapdss_register_display(struct omap_dss_device *dssdev)
 	if (dssdev->name == NULL)
 		dssdev->name = dssdev->alias;
 
+	pax_open_kernel();
 	if (drv && drv->get_resolution == NULL)
-		drv->get_resolution = omapdss_default_get_resolution;
+		*(void **)&drv->get_resolution = omapdss_default_get_resolution;
 	if (drv && drv->get_recommended_bpp == NULL)
-		drv->get_recommended_bpp = omapdss_default_get_recommended_bpp;
+		*(void **)&drv->get_recommended_bpp = omapdss_default_get_recommended_bpp;
 	if (drv && drv->get_timings == NULL)
-		drv->get_timings = omapdss_default_get_timings;
+		*(void **)&drv->get_timings = omapdss_default_get_timings;
+	pax_close_kernel();
 
 	mutex_lock(&panel_list_mutex);
 	list_add_tail(&dssdev->panel_list, &panel_list);
diff --git a/drivers/video/fbdev/s1d13xxxfb.c b/drivers/video/fbdev/s1d13xxxfb.c
index 83433cb..71e9b98 100644
--- a/drivers/video/fbdev/s1d13xxxfb.c
+++ b/drivers/video/fbdev/s1d13xxxfb.c
@@ -881,8 +881,10 @@ static int s1d13xxxfb_probe(struct platform_device *pdev)
 
 	switch(prod_id) {
 	case S1D13506_PROD_ID:	/* activate acceleration */
-		s1d13xxxfb_fbops.fb_fillrect = s1d13xxxfb_bitblt_solidfill;
-		s1d13xxxfb_fbops.fb_copyarea = s1d13xxxfb_bitblt_copyarea;
+		pax_open_kernel();
+		*(void **)&s1d13xxxfb_fbops.fb_fillrect = s1d13xxxfb_bitblt_solidfill;
+		*(void **)&s1d13xxxfb_fbops.fb_copyarea = s1d13xxxfb_bitblt_copyarea;
+		pax_close_kernel();
 		info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
 			FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA;
 		break;
diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c b/drivers/video/fbdev/sh_mobile_lcdcfb.c
index 2bcc84a..29dd1ea 100644
--- a/drivers/video/fbdev/sh_mobile_lcdcfb.c
+++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c
@@ -439,9 +439,9 @@ static unsigned long lcdc_sys_read_data(void *handle)
 }
 
 static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = {
-	lcdc_sys_write_index,
-	lcdc_sys_write_data,
-	lcdc_sys_read_data,
+	.write_index = lcdc_sys_write_index,
+	.write_data = lcdc_sys_write_data,
+	.read_data = lcdc_sys_read_data,
 };
 
 static int sh_mobile_lcdc_sginit(struct fb_info *info,
diff --git a/drivers/video/fbdev/smscufx.c b/drivers/video/fbdev/smscufx.c
index d513ed6..90b0de9 100644
--- a/drivers/video/fbdev/smscufx.c
+++ b/drivers/video/fbdev/smscufx.c
@@ -1175,7 +1175,9 @@ static int ufx_ops_release(struct fb_info *info, int user)
 		fb_deferred_io_cleanup(info);
 		kfree(info->fbdefio);
 		info->fbdefio = NULL;
-		info->fbops->fb_mmap = ufx_ops_mmap;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_mmap = ufx_ops_mmap;
+		pax_close_kernel();
 	}
 
 	pr_debug("released /dev/fb%d user=%d count=%d",
diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
index 77b890e..458e666 100644
--- a/drivers/video/fbdev/udlfb.c
+++ b/drivers/video/fbdev/udlfb.c
@@ -623,11 +623,11 @@ static int dlfb_handle_damage(struct dlfb_data *dev, int x, int y,
 		dlfb_urb_completion(urb);
 
 error:
-	atomic_add(bytes_sent, &dev->bytes_sent);
-	atomic_add(bytes_identical, &dev->bytes_identical);
-	atomic_add(width*height*2, &dev->bytes_rendered);
+	atomic_add_unchecked(bytes_sent, &dev->bytes_sent);
+	atomic_add_unchecked(bytes_identical, &dev->bytes_identical);
+	atomic_add_unchecked(width*height*2, &dev->bytes_rendered);
 	end_cycles = get_cycles();
-	atomic_add(((unsigned int) ((end_cycles - start_cycles)
+	atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles)
 		    >> 10)), /* Kcycles */
 		   &dev->cpu_kcycles_used);
 
@@ -748,11 +748,11 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
 		dlfb_urb_completion(urb);
 
 error:
-	atomic_add(bytes_sent, &dev->bytes_sent);
-	atomic_add(bytes_identical, &dev->bytes_identical);
-	atomic_add(bytes_rendered, &dev->bytes_rendered);
+	atomic_add_unchecked(bytes_sent, &dev->bytes_sent);
+	atomic_add_unchecked(bytes_identical, &dev->bytes_identical);
+	atomic_add_unchecked(bytes_rendered, &dev->bytes_rendered);
 	end_cycles = get_cycles();
-	atomic_add(((unsigned int) ((end_cycles - start_cycles)
+	atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles)
 		    >> 10)), /* Kcycles */
 		   &dev->cpu_kcycles_used);
 }
@@ -993,7 +993,9 @@ static int dlfb_ops_release(struct fb_info *info, int user)
 		fb_deferred_io_cleanup(info);
 		kfree(info->fbdefio);
 		info->fbdefio = NULL;
-		info->fbops->fb_mmap = dlfb_ops_mmap;
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_mmap = dlfb_ops_mmap;
+		pax_close_kernel();
 	}
 
 	pr_warn("released /dev/fb%d user=%d count=%d\n",
@@ -1376,7 +1378,7 @@ static ssize_t metrics_bytes_rendered_show(struct device *fbdev,
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dev = fb_info->par;
 	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dev->bytes_rendered));
+			atomic_read_unchecked(&dev->bytes_rendered));
 }
 
 static ssize_t metrics_bytes_identical_show(struct device *fbdev,
@@ -1384,7 +1386,7 @@ static ssize_t metrics_bytes_identical_show(struct device *fbdev,
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dev = fb_info->par;
 	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dev->bytes_identical));
+			atomic_read_unchecked(&dev->bytes_identical));
 }
 
 static ssize_t metrics_bytes_sent_show(struct device *fbdev,
@@ -1392,7 +1394,7 @@ static ssize_t metrics_bytes_sent_show(struct device *fbdev,
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dev = fb_info->par;
 	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dev->bytes_sent));
+			atomic_read_unchecked(&dev->bytes_sent));
 }
 
 static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
@@ -1400,7 +1402,7 @@ static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dev = fb_info->par;
 	return snprintf(buf, PAGE_SIZE, "%u\n",
-			atomic_read(&dev->cpu_kcycles_used));
+			atomic_read_unchecked(&dev->cpu_kcycles_used));
 }
 
 static ssize_t edid_show(
@@ -1460,10 +1462,10 @@ static ssize_t metrics_reset_store(struct device *fbdev,
 	struct fb_info *fb_info = dev_get_drvdata(fbdev);
 	struct dlfb_data *dev = fb_info->par;
 
-	atomic_set(&dev->bytes_rendered, 0);
-	atomic_set(&dev->bytes_identical, 0);
-	atomic_set(&dev->bytes_sent, 0);
-	atomic_set(&dev->cpu_kcycles_used, 0);
+	atomic_set_unchecked(&dev->bytes_rendered, 0);
+	atomic_set_unchecked(&dev->bytes_identical, 0);
+	atomic_set_unchecked(&dev->bytes_sent, 0);
+	atomic_set_unchecked(&dev->cpu_kcycles_used, 0);
 
 	return count;
 }
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
index 509d452..7c9d2de 100644
--- a/drivers/video/fbdev/uvesafb.c
+++ b/drivers/video/fbdev/uvesafb.c
@@ -19,6 +19,7 @@
 #include <linux/io.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/moduleloader.h>
 #include <video/edid.h>
 #include <video/uvesafb.h>
 #ifdef CONFIG_X86
@@ -565,10 +566,32 @@ static int uvesafb_vbe_getpmi(struct uvesafb_ktask *task,
 	if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) {
 		par->pmi_setpal = par->ypan = 0;
 	} else {
+
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_MODULES
+		par->pmi_code = module_alloc_exec((u16)task->t.regs.ecx);
+#endif
+		if (!par->pmi_code) {
+			par->pmi_setpal = par->ypan = 0;
+			return 0;
+		}
+#endif
+
 		par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4)
 						+ task->t.regs.edi);
+
+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+		pax_open_kernel();
+		memcpy(par->pmi_code, par->pmi_base, (u16)task->t.regs.ecx);
+		pax_close_kernel();
+
+		par->pmi_start = ktva_ktla(par->pmi_code + par->pmi_base[1]);
+		par->pmi_pal = ktva_ktla(par->pmi_code + par->pmi_base[2]);
+#else
 		par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1];
 		par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2];
+#endif
+
 		printk(KERN_INFO "uvesafb: protected mode interface info at "
 				 "%04x:%04x\n",
 				 (u16)task->t.regs.es, (u16)task->t.regs.edi);
@@ -813,13 +836,14 @@ static int uvesafb_vbe_init(struct fb_info *info)
 	par->ypan = ypan;
 
 	if (par->pmi_setpal || par->ypan) {
+#if !defined(CONFIG_MODULES) || !defined(CONFIG_PAX_KERNEXEC)
 		if (__supported_pte_mask & _PAGE_NX) {
 			par->pmi_setpal = par->ypan = 0;
 			printk(KERN_WARNING "uvesafb: NX protection is active, "
 					    "better not use the PMI.\n");
-		} else {
+		} else
+#endif
 			uvesafb_vbe_getpmi(task, par);
-		}
 	}
 #else
 	/* The protected mode interface is not available on non-x86. */
@@ -1453,8 +1477,11 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
 	info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0;
 
 	/* Disable blanking if the user requested so. */
-	if (!blank)
-		info->fbops->fb_blank = NULL;
+	if (!blank) {
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_blank = NULL;
+		pax_close_kernel();
+	}
 
 	/*
 	 * Find out how much IO memory is required for the mode with
@@ -1525,8 +1552,11 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
 	info->flags = FBINFO_FLAG_DEFAULT |
 			(par->ypan ? FBINFO_HWACCEL_YPAN : 0);
 
-	if (!par->ypan)
-		info->fbops->fb_pan_display = NULL;
+	if (!par->ypan) {
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_pan_display = NULL;
+		pax_close_kernel();
+	}
 }
 
 static void uvesafb_init_mtrr(struct fb_info *info)
@@ -1787,6 +1817,11 @@ out_mode:
 out:
 	kfree(par->vbe_modes);
 
+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+	if (par->pmi_code)
+		module_free_exec(NULL, par->pmi_code);
+#endif
+
 	framebuffer_release(info);
 	return err;
 }
@@ -1811,6 +1846,11 @@ static int uvesafb_remove(struct platform_device *dev)
 		kfree(par->vbe_state_orig);
 		kfree(par->vbe_state_saved);
 
+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+		if (par->pmi_code)
+			module_free_exec(NULL, par->pmi_code);
+#endif
+
 		framebuffer_release(info);
 	}
 	return 0;
diff --git a/drivers/video/fbdev/vesafb.c b/drivers/video/fbdev/vesafb.c
index 6170e7f..dd63031 100644
--- a/drivers/video/fbdev/vesafb.c
+++ b/drivers/video/fbdev/vesafb.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/moduleloader.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/string.h>
@@ -52,8 +53,8 @@ static int   vram_remap;			/* Set amount of memory to be used */
 static int   vram_total;			/* Set total amount of memory */
 static int   pmi_setpal __read_mostly = 1;	/* pmi for palette changes ??? */
 static int   ypan       __read_mostly;		/* 0..nothing, 1..ypan, 2..ywrap */
-static void  (*pmi_start)(void) __read_mostly;
-static void  (*pmi_pal)  (void) __read_mostly;
+static void  (*pmi_start)(void) __read_only;
+static void  (*pmi_pal)  (void) __read_only;
 static int   depth      __read_mostly;
 static int   vga_compat __read_mostly;
 /* --------------------------------------------------------------------- */
@@ -233,6 +234,7 @@ static int vesafb_probe(struct platform_device *dev)
 	unsigned int size_remap;
 	unsigned int size_total;
 	char *option = NULL;
+	void *pmi_code = NULL;
 
 	/* ignore error return of fb_get_options */
 	fb_get_options("vesafb", &option);
@@ -279,10 +281,6 @@ static int vesafb_probe(struct platform_device *dev)
 		size_remap = size_total;
 	vesafb_fix.smem_len = size_remap;
 
-#ifndef __i386__
-	screen_info.vesapm_seg = 0;
-#endif
-
 	if (!request_mem_region(vesafb_fix.smem_start, size_total, "vesafb")) {
 		printk(KERN_WARNING
 		       "vesafb: cannot reserve video memory at 0x%lx\n",
@@ -312,9 +310,21 @@ static int vesafb_probe(struct platform_device *dev)
 	printk(KERN_INFO "vesafb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
 	       vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel, vesafb_fix.line_length, screen_info.pages);
 
+#ifdef __i386__
+
+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+	pmi_code = module_alloc_exec(screen_info.vesapm_size);
+	if (!pmi_code)
+#elif !defined(CONFIG_PAX_KERNEXEC)
+	if (0)
+#endif
+
+#endif
+	screen_info.vesapm_seg = 0;
+
 	if (screen_info.vesapm_seg) {
-		printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x\n",
-		       screen_info.vesapm_seg,screen_info.vesapm_off);
+		printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x %04x bytes\n",
+		       screen_info.vesapm_seg,screen_info.vesapm_off,screen_info.vesapm_size);
 	}
 
 	if (screen_info.vesapm_seg < 0xc000)
@@ -322,9 +332,25 @@ static int vesafb_probe(struct platform_device *dev)
 
 	if (ypan || pmi_setpal) {
 		unsigned short *pmi_base;
+
 		pmi_base  = (unsigned short*)phys_to_virt(((unsigned long)screen_info.vesapm_seg << 4) + screen_info.vesapm_off);
-		pmi_start = (void*)((char*)pmi_base + pmi_base[1]);
-		pmi_pal   = (void*)((char*)pmi_base + pmi_base[2]);
+
+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+		pax_open_kernel();
+		memcpy(pmi_code, pmi_base, screen_info.vesapm_size);
+#else
+		pmi_code  = pmi_base;
+#endif
+
+		pmi_start = (void*)((char*)pmi_code + pmi_base[1]);
+		pmi_pal   = (void*)((char*)pmi_code + pmi_base[2]);
+
+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+		pmi_start = ktva_ktla(pmi_start);
+		pmi_pal = ktva_ktla(pmi_pal);
+		pax_close_kernel();
+#endif
+
 		printk(KERN_INFO "vesafb: pmi: set display start = %p, set palette = %p\n",pmi_start,pmi_pal);
 		if (pmi_base[3]) {
 			printk(KERN_INFO "vesafb: pmi: ports = ");
@@ -477,8 +503,11 @@ static int vesafb_probe(struct platform_device *dev)
 	info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE |
 		(ypan ? FBINFO_HWACCEL_YPAN : 0);
 
-	if (!ypan)
-		info->fbops->fb_pan_display = NULL;
+	if (!ypan) {
+		pax_open_kernel();
+		*(void **)&info->fbops->fb_pan_display = NULL;
+		pax_close_kernel();
+	}
 
 	if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
 		err = -ENOMEM;
@@ -492,6 +521,11 @@ static int vesafb_probe(struct platform_device *dev)
 	fb_info(info, "%s frame buffer device\n", info->fix.id);
 	return 0;
 err:
+
+#if defined(__i386__) && defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
+	module_free_exec(NULL, pmi_code);
+#endif
+
 	if (info->screen_base)
 		iounmap(info->screen_base);
 	framebuffer_release(info);
diff --git a/drivers/video/fbdev/via/via_clock.h b/drivers/video/fbdev/via/via_clock.h
index 88714ae..16c2e11 100644
--- a/drivers/video/fbdev/via/via_clock.h
+++ b/drivers/video/fbdev/via/via_clock.h
@@ -56,7 +56,7 @@ struct via_clock {
 
 	void (*set_engine_pll_state)(u8 state);
 	void (*set_engine_pll)(struct via_pll_config config);
-};
+} __no_const;
 
 
 static inline u32 get_pll_internal_frequency(u32 ref_freq,
diff --git a/drivers/video/logo/logo_linux_clut224.ppm b/drivers/video/logo/logo_linux_clut224.ppm
index 3c14e43..2630570 100644
--- a/drivers/video/logo/logo_linux_clut224.ppm
+++ b/drivers/video/logo/logo_linux_clut224.ppm
@@ -2,1603 +2,1123 @@ P3
 # Standard 224-color Linux logo
 80 80
 255
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6   6   6   6  10  10  10  10  10  10
- 10  10  10   6   6   6   6   6   6   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   6   6   6  10  10  10  14  14  14
- 22  22  22  26  26  26  30  30  30  34  34  34
- 30  30  30  30  30  30  26  26  26  18  18  18
- 14  14  14  10  10  10   6   6   6   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   1   0   0   1   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  14  14  14  26  26  26  42  42  42
- 54  54  54  66  66  66  78  78  78  78  78  78
- 78  78  78  74  74  74  66  66  66  54  54  54
- 42  42  42  26  26  26  18  18  18  10  10  10
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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- 22  22  22  42  42  42  66  66  66  86  86  86
- 66  66  66  38  38  38  38  38  38  22  22  22
- 26  26  26  34  34  34  54  54  54  66  66  66
- 86  86  86  70  70  70  46  46  46  26  26  26
- 14  14  14   6   6   6   0   0   0   0   0   0
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-  0   0   0   0   0   0  10  10  10  26  26  26
- 50  50  50  82  82  82  58  58  58   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  6   6   6  54  54  54  86  86  86  66  66  66
- 38  38  38  18  18  18   6   6   6   0   0   0
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-  0   0   0   6   6   6  22  22  22  50  50  50
- 78  78  78  34  34  34   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   6   6   6  70  70  70
- 78  78  78  46  46  46  22  22  22   6   6   6
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  18  18  18  42  42  42  82  82  82
- 26  26  26   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  14  14  14
- 46  46  46  34  34  34   6   6   6   2   2   6
- 42  42  42  78  78  78  42  42  42  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
- 10  10  10  30  30  30  66  66  66  58  58  58
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  26  26  26
- 86  86  86 101 101 101  46  46  46  10  10  10
-  2   2   6  58  58  58  70  70  70  34  34  34
- 10  10  10   0   0   0   0   0   0   0   0   0
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- 14  14  14  42  42  42  86  86  86  10  10  10
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  30  30  30
- 94  94  94  94  94  94  58  58  58  26  26  26
-  2   2   6   6   6   6  78  78  78  54  54  54
- 22  22  22   6   6   6   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 22  22  22  62  62  62  62  62  62   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  26  26  26
- 54  54  54  38  38  38  18  18  18  10  10  10
-  2   2   6   2   2   6  34  34  34  82  82  82
- 38  38  38  14  14  14   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 30  30  30  78  78  78  30  30  30   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  10  10  10
- 10  10  10   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  78  78  78
- 50  50  50  18  18  18   6   6   6   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 38  38  38  86  86  86  14  14  14   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  54  54  54
- 66  66  66  26  26  26   6   6   6   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 42  42  42  82  82  82   2   2   6   2   2   6
-  2   2   6   6   6   6  10  10  10   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   6   6   6
- 14  14  14  10  10  10   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  18  18  18
- 82  82  82  34  34  34  10  10  10   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 46  46  46  86  86  86   2   2   6   2   2   6
-  6   6   6   6   6   6  22  22  22  34  34  34
-  6   6   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  18  18  18  34  34  34
- 10  10  10  50  50  50  22  22  22   2   2   6
-  2   2   6   2   2   6   2   2   6  10  10  10
- 86  86  86  42  42  42  14  14  14   0   0   0
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-  0   0   0   0   0   0   0   0   0  14  14  14
- 46  46  46  86  86  86   2   2   6   2   2   6
- 38  38  38 116 116 116  94  94  94  22  22  22
- 22  22  22   2   2   6   2   2   6   2   2   6
- 14  14  14  86  86  86 138 138 138 162 162 162
-154 154 154  38  38  38  26  26  26   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 86  86  86  46  46  46  14  14  14   0   0   0
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-  0   0   0   0   0   0   0   0   0  14  14  14
- 46  46  46  86  86  86   2   2   6  14  14  14
-134 134 134 198 198 198 195 195 195 116 116 116
- 10  10  10   2   2   6   2   2   6   6   6   6
-101  98  89 187 187 187 210 210 210 218 218 218
-214 214 214 134 134 134  14  14  14   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 86  86  86  50  50  50  18  18  18   6   6   6
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 46  46  46  86  86  86   2   2   6  54  54  54
-218 218 218 195 195 195 226 226 226 246 246 246
- 58  58  58   2   2   6   2   2   6  30  30  30
-210 210 210 253 253 253 174 174 174 123 123 123
-221 221 221 234 234 234  74  74  74   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 70  70  70  58  58  58  22  22  22   6   6   6
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 46  46  46  82  82  82   2   2   6 106 106 106
-170 170 170  26  26  26  86  86  86 226 226 226
-123 123 123  10  10  10  14  14  14  46  46  46
-231 231 231 190 190 190   6   6   6  70  70  70
- 90  90  90 238 238 238 158 158 158   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 70  70  70  58  58  58  22  22  22   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0  14  14  14
- 42  42  42  86  86  86   6   6   6 116 116 116
-106 106 106   6   6   6  70  70  70 149 149 149
-128 128 128  18  18  18  38  38  38  54  54  54
-221 221 221 106 106 106   2   2   6  14  14  14
- 46  46  46 190 190 190 198 198 198   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 74  74  74  62  62  62  22  22  22   6   6   6
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- 42  42  42  94  94  94  14  14  14 101 101 101
-128 128 128   2   2   6  18  18  18 116 116 116
-118  98  46 121  92   8 121  92   8  98  78  10
-162 162 162 106 106 106   2   2   6   2   2   6
-  2   2   6 195 195 195 195 195 195   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 74  74  74  62  62  62  22  22  22   6   6   6
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- 38  38  38  90  90  90  14  14  14  58  58  58
-210 210 210  26  26  26  54  38   6 154 114  10
-226 170  11 236 186  11 225 175  15 184 144  12
-215 174  15 175 146  61  37  26   9   2   2   6
- 70  70  70 246 246 246 138 138 138   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 70  70  70  66  66  66  26  26  26   6   6   6
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-  0   0   0   0   0   0   0   0   0  10  10  10
- 38  38  38  86  86  86  14  14  14  10  10  10
-195 195 195 188 164 115 192 133   9 225 175  15
-239 182  13 234 190  10 232 195  16 232 200  30
-245 207  45 241 208  19 232 195  16 184 144  12
-218 194 134 211 206 186  42  42  42   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 50  50  50  74  74  74  30  30  30   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 34  34  34  86  86  86  14  14  14   2   2   6
-121  87  25 192 133   9 219 162  10 239 182  13
-236 186  11 232 195  16 241 208  19 244 214  54
-246 218  60 246 218  38 246 215  20 241 208  19
-241 208  19 226 184  13 121  87  25   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 50  50  50  82  82  82  34  34  34  10  10  10
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 34  34  34  82  82  82  30  30  30  61  42   6
-180 123   7 206 145  10 230 174  11 239 182  13
-234 190  10 238 202  15 241 208  19 246 218  74
-246 218  38 246 215  20 246 215  20 246 215  20
-226 184  13 215 174  15 184 144  12   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 26  26  26  94  94  94  42  42  42  14  14  14
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  78  78  78  50  50  50 104  69   6
-192 133   9 216 158  10 236 178  12 236 186  11
-232 195  16 241 208  19 244 214  54 245 215  43
-246 215  20 246 215  20 241 208  19 198 155  10
-200 144  11 216 158  10 156 118  10   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  6   6   6  90  90  90  54  54  54  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  78  78  78  46  46  46  22  22  22
-137  92   6 210 162  10 239 182  13 238 190  10
-238 202  15 241 208  19 246 215  20 246 215  20
-241 208  19 203 166  17 185 133  11 210 150  10
-216 158  10 210 150  10 102  78  10   2   2   6
-  6   6   6  54  54  54  14  14  14   2   2   6
-  2   2   6  62  62  62  74  74  74  30  30  30
- 10  10  10   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 34  34  34  78  78  78  50  50  50   6   6   6
- 94  70  30 139 102  15 190 146  13 226 184  13
-232 200  30 232 195  16 215 174  15 190 146  13
-168 122  10 192 133   9 210 150  10 213 154  11
-202 150  34 182 157 106 101  98  89   2   2   6
-  2   2   6  78  78  78 116 116 116  58  58  58
-  2   2   6  22  22  22  90  90  90  46  46  46
- 18  18  18   6   6   6   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0  10  10  10
- 38  38  38  86  86  86  50  50  50   6   6   6
-128 128 128 174 154 114 156 107  11 168 122  10
-198 155  10 184 144  12 197 138  11 200 144  11
-206 145  10 206 145  10 197 138  11 188 164 115
-195 195 195 198 198 198 174 174 174  14  14  14
-  2   2   6  22  22  22 116 116 116 116 116 116
- 22  22  22   2   2   6  74  74  74  70  70  70
- 30  30  30  10  10  10   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   6   6   6  18  18  18
- 50  50  50 101 101 101  26  26  26  10  10  10
-138 138 138 190 190 190 174 154 114 156 107  11
-197 138  11 200 144  11 197 138  11 192 133   9
-180 123   7 190 142  34 190 178 144 187 187 187
-202 202 202 221 221 221 214 214 214  66  66  66
-  2   2   6   2   2   6  50  50  50  62  62  62
-  6   6   6   2   2   6  10  10  10  90  90  90
- 50  50  50  18  18  18   6   6   6   0   0   0
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-  0   0   0   0   0   0  10  10  10  34  34  34
- 74  74  74  74  74  74   2   2   6   6   6   6
-144 144 144 198 198 198 190 190 190 178 166 146
-154 121  60 156 107  11 156 107  11 168 124  44
-174 154 114 187 187 187 190 190 190 210 210 210
-246 246 246 253 253 253 253 253 253 182 182 182
-  6   6   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  62  62  62
- 74  74  74  34  34  34  14  14  14   0   0   0
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-  0   0   0  10  10  10  22  22  22  54  54  54
- 94  94  94  18  18  18   2   2   6  46  46  46
-234 234 234 221 221 221 190 190 190 190 190 190
-190 190 190 187 187 187 187 187 187 190 190 190
-190 190 190 195 195 195 214 214 214 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
- 82  82  82   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  14  14  14
- 86  86  86  54  54  54  22  22  22   6   6   6
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  18  18  18  46  46  46  90  90  90
- 46  46  46  18  18  18   6   6   6 182 182 182
-253 253 253 246 246 246 206 206 206 190 190 190
-190 190 190 190 190 190 190 190 190 190 190 190
-206 206 206 231 231 231 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-202 202 202  14  14  14   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 42  42  42  86  86  86  42  42  42  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   6   6   6
- 14  14  14  38  38  38  74  74  74  66  66  66
-  2   2   6   6   6   6  90  90  90 250 250 250
-253 253 253 253 253 253 238 238 238 198 198 198
-190 190 190 190 190 190 195 195 195 221 221 221
-246 246 246 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253  82  82  82   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  78  78  78  70  70  70  34  34  34
- 14  14  14   6   6   6   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 34  34  34  66  66  66  78  78  78   6   6   6
-  2   2   6  18  18  18 218 218 218 253 253 253
-253 253 253 253 253 253 253 253 253 246 246 246
-226 226 226 231 231 231 246 246 246 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 178 178 178   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  18  18  18  90  90  90  62  62  62
- 30  30  30  10  10  10   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
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-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0  10  10  10  26  26  26
- 58  58  58  90  90  90  18  18  18   2   2   6
-  2   2   6 110 110 110 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-250 250 250 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 231 231 231  18  18  18   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  18  18  18  94  94  94
- 54  54  54  26  26  26  10  10  10   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   6   6   6  22  22  22  50  50  50
- 90  90  90  26  26  26   2   2   6   2   2   6
- 14  14  14 195 195 195 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-250 250 250 242 242 242  54  54  54   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6  38  38  38
- 86  86  86  50  50  50  22  22  22   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  14  14  14  38  38  38  82  82  82
- 34  34  34   2   2   6   2   2   6   2   2   6
- 42  42  42 195 195 195 246 246 246 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-242 242 242 242 242 242 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 250 250 250 246 246 246 238 238 238
-226 226 226 231 231 231 101 101 101   6   6   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
- 38  38  38  82  82  82  42  42  42  14  14  14
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
- 10  10  10  26  26  26  62  62  62  66  66  66
-  2   2   6   2   2   6   2   2   6   6   6   6
- 70  70  70 170 170 170 206 206 206 234 234 234
-246 246 246 250 250 250 250 250 250 238 238 238
-226 226 226 231 231 231 238 238 238 250 250 250
-250 250 250 250 250 250 246 246 246 231 231 231
-214 214 214 206 206 206 202 202 202 202 202 202
-198 198 198 202 202 202 182 182 182  18  18  18
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  62  62  62  66  66  66  30  30  30
- 10  10  10   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
- 14  14  14  42  42  42  82  82  82  18  18  18
-  2   2   6   2   2   6   2   2   6  10  10  10
- 94  94  94 182 182 182 218 218 218 242 242 242
-250 250 250 253 253 253 253 253 253 250 250 250
-234 234 234 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 246 246 246
-238 238 238 226 226 226 210 210 210 202 202 202
-195 195 195 195 195 195 210 210 210 158 158 158
-  6   6   6  14  14  14  50  50  50  14  14  14
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6   6   6   6  86  86  86  46  46  46
- 18  18  18   6   6   6   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 22  22  22  54  54  54  70  70  70   2   2   6
-  2   2   6  10  10  10   2   2   6  22  22  22
-166 166 166 231 231 231 250 250 250 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-242 242 242 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 246 246 246
-231 231 231 206 206 206 198 198 198 226 226 226
- 94  94  94   2   2   6   6   6   6  38  38  38
- 30  30  30   2   2   6   2   2   6   2   2   6
-  2   2   6   2   2   6  62  62  62  66  66  66
- 26  26  26  10  10  10   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 30  30  30  74  74  74  50  50  50   2   2   6
- 26  26  26  26  26  26   2   2   6 106 106 106
-238 238 238 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 246 246 246 218 218 218 202 202 202
-210 210 210  14  14  14   2   2   6   2   2   6
- 30  30  30  22  22  22   2   2   6   2   2   6
-  2   2   6   2   2   6  18  18  18  86  86  86
- 42  42  42  14  14  14   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  14  14  14
- 42  42  42  90  90  90  22  22  22   2   2   6
- 42  42  42   2   2   6  18  18  18 218 218 218
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 250 250 250 221 221 221
-218 218 218 101 101 101   2   2   6  14  14  14
- 18  18  18  38  38  38  10  10  10   2   2   6
-  2   2   6   2   2   6   2   2   6  78  78  78
- 58  58  58  22  22  22   6   6   6   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   6   6   6  18  18  18
- 54  54  54  82  82  82   2   2   6  26  26  26
- 22  22  22   2   2   6 123 123 123 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-238 238 238 198 198 198   6   6   6  38  38  38
- 58  58  58  26  26  26  38  38  38   2   2   6
-  2   2   6   2   2   6   2   2   6  46  46  46
- 78  78  78  30  30  30  10  10  10   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0  10  10  10  30  30  30
- 74  74  74  58  58  58   2   2   6  42  42  42
-  2   2   6  22  22  22 231 231 231 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 250 250 250
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 246 246 246  46  46  46  38  38  38
- 42  42  42  14  14  14  38  38  38  14  14  14
-  2   2   6   2   2   6   2   2   6   6   6   6
- 86  86  86  46  46  46  14  14  14   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   6   6   6  14  14  14  42  42  42
- 90  90  90  18  18  18  18  18  18  26  26  26
-  2   2   6 116 116 116 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 250 250 250 238 238 238
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253  94  94  94   6   6   6
-  2   2   6   2   2   6  10  10  10  34  34  34
-  2   2   6   2   2   6   2   2   6   2   2   6
- 74  74  74  58  58  58  22  22  22   6   6   6
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0  10  10  10  26  26  26  66  66  66
- 82  82  82   2   2   6  38  38  38   6   6   6
- 14  14  14 210 210 210 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 246 246 246 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 144 144 144   2   2   6
-  2   2   6   2   2   6   2   2   6  46  46  46
-  2   2   6   2   2   6   2   2   6   2   2   6
- 42  42  42  74  74  74  30  30  30  10  10  10
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  6   6   6  14  14  14  42  42  42  90  90  90
- 26  26  26   6   6   6  42  42  42   2   2   6
- 74  74  74 250 250 250 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 242 242 242 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 182 182 182   2   2   6
-  2   2   6   2   2   6   2   2   6  46  46  46
-  2   2   6   2   2   6   2   2   6   2   2   6
- 10  10  10  86  86  86  38  38  38  10  10  10
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
- 10  10  10  26  26  26  66  66  66  82  82  82
-  2   2   6  22  22  22  18  18  18   2   2   6
-149 149 149 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 206 206 206   2   2   6
-  2   2   6   2   2   6   2   2   6  38  38  38
-  2   2   6   2   2   6   2   2   6   2   2   6
-  6   6   6  86  86  86  46  46  46  14  14  14
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   6   6   6
- 18  18  18  46  46  46  86  86  86  18  18  18
-  2   2   6  34  34  34  10  10  10   6   6   6
-210 210 210 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 221 221 221   6   6   6
-  2   2   6   2   2   6   6   6   6  30  30  30
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  82  82  82  54  54  54  18  18  18
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 26  26  26  66  66  66  62  62  62   2   2   6
-  2   2   6  38  38  38  10  10  10  26  26  26
-238 238 238 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 231 231 231 238 238 238
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 231 231 231   6   6   6
-  2   2   6   2   2   6  10  10  10  30  30  30
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  58  58  58  22  22  22
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0  10  10  10
- 38  38  38  78  78  78   6   6   6   2   2   6
-  2   2   6  46  46  46  14  14  14  42  42  42
-246 246 246 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 231 231 231 242 242 242
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234  10  10  10
-  2   2   6   2   2   6  22  22  22  14  14  14
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  62  62  62  22  22  22
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   6   6   6  18  18  18
- 50  50  50  74  74  74   2   2   6   2   2   6
- 14  14  14  70  70  70  34  34  34  62  62  62
-250 250 250 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 231 231 231 246 246 246
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 253 253 253 253 253 253
-253 253 253 253 253 253 234 234 234  14  14  14
-  2   2   6   2   2   6  30  30  30   2   2   6
-  2   2   6   2   2   6   2   2   6   2   2   6
-  2   2   6  66  66  66  62  62  62  22  22  22
-  6   6   6   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   0   0   0   0   0   0
-  0   0   0   0   0   0   6   6   6  18  18  18
- 54  54  54  62  62  62   2   2   6   2   2   6
-  2   2   6  30  30  30  46  46  46  70  70  70
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-  2   2   6   2   2   6   2   2   6  38  38  38
-218 218 218 253 253 253 253 253 253 253 253 253
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-  2   2   6   2   2   6   2   2   6   2   2   6
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- 61  42   6   2   2   6   2   2   6   2   2   6
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-253 253 253 253 253 253 253 253 253 253 253 253
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- 58  58  58   2   2   6  22  18   6 167 114   7
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-253 253 253 253 253 253 253 253 253 250 250 250
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-  6   6   6   2   2   6   2   2   6   2   2   6
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- 80  54   7   2   2   6   6   6   6  30  30  30
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- 14  14  14   2   2   6   2   2   6   2   2   6
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diff --git a/drivers/xen/xenfs/xenstored.c b/drivers/xen/xenfs/xenstored.c
index fef20db..d28b1ab 100644
--- a/drivers/xen/xenfs/xenstored.c
+++ b/drivers/xen/xenfs/xenstored.c
@@ -24,7 +24,12 @@ static int xsd_release(struct inode *inode, struct file *file)
 static int xsd_kva_open(struct inode *inode, struct file *file)
 {
 	file->private_data = (void *)kasprintf(GFP_KERNEL, "0x%p",
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+					       NULL);
+#else
 					       xen_store_interface);
+#endif
+
 	if (!file->private_data)
 		return -ENOMEM;
 	return 0;
diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
index cc1cfae..41158ad 100644
--- a/fs/9p/vfs_addr.c
+++ b/fs/9p/vfs_addr.c
@@ -187,7 +187,7 @@ static int v9fs_vfs_writepage_locked(struct page *page)
 
 	retval = v9fs_file_write_internal(inode,
 					  v9inode->writeback_fid,
-					  (__force const char __user *)buffer,
+					  (const char __force_user *)buffer,
 					  len, &offset, 0);
 	if (retval > 0)
 		retval = 0;
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 7fa4f7a..a7ebf8c 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1312,7 +1312,7 @@ static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 void
 v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
 {
-	char *s = nd_get_link(nd);
+	const char *s = nd_get_link(nd);
 
 	p9_debug(P9_DEBUG_VFS, " %s %s\n",
 		 dentry->d_name.name, IS_ERR(s) ? "<error>" : s);
diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
index 370b24c..ff0be7b 100644
--- a/fs/Kconfig.binfmt
+++ b/fs/Kconfig.binfmt
@@ -103,7 +103,7 @@ config HAVE_AOUT
 
 config BINFMT_AOUT
 	tristate "Kernel support for a.out and ECOFF binaries"
-	depends on HAVE_AOUT
+	depends on HAVE_AOUT && BROKEN
 	---help---
 	  A.out (Assembler.OUTput) is a set of formats for libraries and
 	  executables used in the earliest versions of UNIX.  Linux used
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 2946712..f737435 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -141,7 +141,7 @@ struct inode *afs_iget_autocell(struct inode *dir, const char *dev_name,
 	struct afs_vnode *vnode;
 	struct super_block *sb;
 	struct inode *inode;
-	static atomic_t afs_autocell_ino;
+	static atomic_unchecked_t afs_autocell_ino;
 
 	_enter("{%x:%u},%*.*s,",
 	       AFS_FS_I(dir)->fid.vid, AFS_FS_I(dir)->fid.vnode,
@@ -154,7 +154,7 @@ struct inode *afs_iget_autocell(struct inode *dir, const char *dev_name,
 	data.fid.unique = 0;
 	data.fid.vnode = 0;
 
-	inode = iget5_locked(sb, atomic_inc_return(&afs_autocell_ino),
+	inode = iget5_locked(sb, atomic_inc_return_unchecked(&afs_autocell_ino),
 			     afs_iget5_autocell_test, afs_iget5_set,
 			     &data);
 	if (!inode) {
diff --git a/fs/aio.c b/fs/aio.c
index 1c9c5f0..c935d6e 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -141,6 +141,7 @@ struct kioctx {
 
 	struct {
 		unsigned	tail;
+		unsigned	completed_events;
 		spinlock_t	completion_lock;
 	} ____cacheline_aligned_in_smp;
 
@@ -380,7 +381,7 @@ static int aio_setup_ring(struct kioctx *ctx)
 	size += sizeof(struct io_event) * nr_events;
 
 	nr_pages = PFN_UP(size);
-	if (nr_pages < 0)
+	if (nr_pages <= 0)
 		return -EINVAL;
 
 	file = aio_private_file(ctx, nr_pages);
@@ -880,6 +881,68 @@ out:
 	return ret;
 }
 
+/* refill_reqs_available
+ *	Updates the reqs_available reference counts used for tracking the
+ *	number of free slots in the completion ring.  This can be called
+ *	from aio_complete() (to optimistically update reqs_available) or
+ *	from aio_get_req() (the we're out of events case).  It must be
+ *	called holding ctx->completion_lock.
+ */
+static void refill_reqs_available(struct kioctx *ctx, unsigned head,
+                                  unsigned tail)
+{
+	unsigned events_in_ring, completed;
+
+	/* Clamp head since userland can write to it. */
+	head %= ctx->nr_events;
+	if (head <= tail)
+		events_in_ring = tail - head;
+	else
+		events_in_ring = ctx->nr_events - (head - tail);
+
+	completed = ctx->completed_events;
+	if (events_in_ring < completed)
+		completed -= events_in_ring;
+	else
+		completed = 0;
+
+	if (!completed)
+		return;
+
+	ctx->completed_events -= completed;
+	put_reqs_available(ctx, completed);
+}
+
+/* user_refill_reqs_available
+ *	Called to refill reqs_available when aio_get_req() encounters an
+ *	out of space in the completion ring.
+ */
+static void user_refill_reqs_available(struct kioctx *ctx)
+{
+	spin_lock_irq(&ctx->completion_lock);
+	if (ctx->completed_events) {
+		struct aio_ring *ring;
+		unsigned head;
+
+		/* Access of ring->head may race with aio_read_events_ring()
+		 * here, but that's okay since whether we read the old version
+		 * or the new version, and either will be valid.  The important
+		 * part is that head cannot pass tail since we prevent
+		 * aio_complete() from updating tail by holding
+		 * ctx->completion_lock.  Even if head is invalid, the check
+		 * against ctx->completed_events below will make sure we do the
+		 * safe/right thing.
+		 */
+		ring = kmap_atomic(ctx->ring_pages[0]);
+		head = ring->head;
+		kunmap_atomic(ring);
+
+		refill_reqs_available(ctx, head, ctx->tail);
+	}
+
+	spin_unlock_irq(&ctx->completion_lock);
+}
+
 /* aio_get_req
  *	Allocate a slot for an aio request.
  * Returns NULL if no requests are free.
@@ -888,8 +951,11 @@ static inline struct kiocb *aio_get_req(struct kioctx *ctx)
 {
 	struct kiocb *req;
 
-	if (!get_reqs_available(ctx))
-		return NULL;
+	if (!get_reqs_available(ctx)) {
+		user_refill_reqs_available(ctx);
+		if (!get_reqs_available(ctx))
+			return NULL;
+	}
 
 	req = kmem_cache_alloc(kiocb_cachep, GFP_KERNEL|__GFP_ZERO);
 	if (unlikely(!req))
@@ -948,8 +1014,8 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
 	struct kioctx	*ctx = iocb->ki_ctx;
 	struct aio_ring	*ring;
 	struct io_event	*ev_page, *event;
+	unsigned tail, pos, head;
 	unsigned long	flags;
-	unsigned tail, pos;
 
 	/*
 	 * Special case handling for sync iocbs:
@@ -1010,10 +1076,14 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
 	ctx->tail = tail;
 
 	ring = kmap_atomic(ctx->ring_pages[0]);
+	head = ring->head;
 	ring->tail = tail;
 	kunmap_atomic(ring);
 	flush_dcache_page(ctx->ring_pages[0]);
 
+	ctx->completed_events++;
+	if (ctx->completed_events > 1)
+		refill_reqs_available(ctx, head, tail);
 	spin_unlock_irqrestore(&ctx->completion_lock, flags);
 
 	pr_debug("added to ring %p at [%u]\n", iocb, tail);
@@ -1028,7 +1098,6 @@ void aio_complete(struct kiocb *iocb, long res, long res2)
 
 	/* everything turned out well, dispose of the aiocb. */
 	kiocb_free(iocb);
-	put_reqs_available(ctx, 1);
 
 	/*
 	 * We have to order our ring_info tail store above and test
@@ -1065,6 +1134,12 @@ static long aio_read_events_ring(struct kioctx *ctx,
 	tail = ring->tail;
 	kunmap_atomic(ring);
 
+	/*
+	 * Ensure that once we've read the current tail pointer, that
+	 * we also see the events that were stored up to the tail.
+	 */
+	smp_rmb();
+
 	pr_debug("h%u t%u m%u\n", head, tail, ctx->nr_events);
 
 	if (head == tail)
diff --git a/fs/attr.c b/fs/attr.c
index 6530ced..4a827e2 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -102,6 +102,7 @@ int inode_newsize_ok(const struct inode *inode, loff_t offset)
 		unsigned long limit;
 
 		limit = rlimit(RLIMIT_FSIZE);
+		gr_learn_resource(current, RLIMIT_FSIZE, (unsigned long)offset, 1);
 		if (limit != RLIM_INFINITY && offset > limit)
 			goto out_sig;
 		if (offset > inode->i_sb->s_maxbytes)
diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
index 116fd38..c04182da 100644
--- a/fs/autofs4/waitq.c
+++ b/fs/autofs4/waitq.c
@@ -59,7 +59,7 @@ static int autofs4_write(struct autofs_sb_info *sbi,
 {
 	unsigned long sigpipe, flags;
 	mm_segment_t fs;
-	const char *data = (const char *)addr;
+	const char __user *data = (const char __force_user *)addr;
 	ssize_t wr = 0;
 
 	sigpipe = sigismember(&current->pending.signal, SIGPIPE);
@@ -340,6 +340,10 @@ static int validate_request(struct autofs_wait_queue **wait,
 	return 1;
 }
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+static atomic_unchecked_t autofs_dummy_name_id = ATOMIC_INIT(0);
+#endif
+
 int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
 		enum autofs_notify notify)
 {
@@ -385,7 +389,12 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
 
 	/* If this is a direct mount request create a dummy name */
 	if (IS_ROOT(dentry) && autofs_type_trigger(sbi->type))
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+		/* this name does get written to userland via autofs4_write() */
+		qstr.len = sprintf(name, "%08x", atomic_inc_return_unchecked(&autofs_dummy_name_id));
+#else
 		qstr.len = sprintf(name, "%p", dentry);
+#endif
 	else {
 		qstr.len = autofs4_getpath(sbi, dentry, &name);
 		if (!qstr.len) {
diff --git a/fs/befs/endian.h b/fs/befs/endian.h
index 2722387..56059b5 100644
--- a/fs/befs/endian.h
+++ b/fs/befs/endian.h
@@ -11,7 +11,7 @@
 
 #include <asm/byteorder.h>
 
-static inline u64
+static inline u64 __intentional_overflow(-1)
 fs64_to_cpu(const struct super_block *sb, fs64 n)
 {
 	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
@@ -29,7 +29,7 @@ cpu_to_fs64(const struct super_block *sb, u64 n)
 		return (__force fs64)cpu_to_be64(n);
 }
 
-static inline u32
+static inline u32 __intentional_overflow(-1)
 fs32_to_cpu(const struct super_block *sb, fs32 n)
 {
 	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
@@ -47,7 +47,7 @@ cpu_to_fs32(const struct super_block *sb, u32 n)
 		return (__force fs32)cpu_to_be32(n);
 }
 
-static inline u16
+static inline u16 __intentional_overflow(-1)
 fs16_to_cpu(const struct super_block *sb, fs16 n)
 {
 	if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index ca0ba15..0fa3257 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -16,6 +16,7 @@
 #include <linux/string.h>
 #include <linux/fs.h>
 #include <linux/file.h>
+#include <linux/security.h>
 #include <linux/stat.h>
 #include <linux/fcntl.h>
 #include <linux/ptrace.h>
@@ -58,6 +59,8 @@ static int aout_core_dump(struct coredump_params *cprm)
 #endif
 #       define START_STACK(u)   ((void __user *)u.start_stack)
 
+	memset(&dump, 0, sizeof(dump));
+
 	fs = get_fs();
 	set_fs(KERNEL_DS);
 	has_dumped = 1;
@@ -68,10 +71,12 @@ static int aout_core_dump(struct coredump_params *cprm)
 
 /* If the size of the dump file exceeds the rlimit, then see what would happen
    if we wrote the stack, but not the data area.  */
+	gr_learn_resource(current, RLIMIT_CORE, (dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE, 1);
 	if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit)
 		dump.u_dsize = 0;
 
 /* Make sure we have enough room to write the stack and data areas. */
+	gr_learn_resource(current, RLIMIT_CORE, (dump.u_ssize + 1) * PAGE_SIZE, 1);
 	if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit)
 		dump.u_ssize = 0;
 
@@ -232,6 +237,8 @@ static int load_aout_binary(struct linux_binprm * bprm)
 	rlim = rlimit(RLIMIT_DATA);
 	if (rlim >= RLIM_INFINITY)
 		rlim = ~0;
+
+	gr_learn_resource(current, RLIMIT_DATA, ex.a_data + ex.a_bss, 1);
 	if (ex.a_data + ex.a_bss > rlim)
 		return -ENOMEM;
 
@@ -264,6 +271,27 @@ static int load_aout_binary(struct linux_binprm * bprm)
 
 	install_exec_creds(bprm);
 
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+	current->mm->pax_flags = 0UL;
+#endif
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(N_FLAGS(ex) & F_PAX_PAGEEXEC)) {
+		current->mm->pax_flags |= MF_PAX_PAGEEXEC;
+
+#ifdef CONFIG_PAX_EMUTRAMP
+		if (N_FLAGS(ex) & F_PAX_EMUTRAMP)
+			current->mm->pax_flags |= MF_PAX_EMUTRAMP;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+		if (!(N_FLAGS(ex) & F_PAX_MPROTECT))
+			current->mm->pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+	}
+#endif
+
 	if (N_MAGIC(ex) == OMAGIC) {
 		unsigned long text_addr, map_size;
 		loff_t pos;
@@ -321,7 +349,7 @@ static int load_aout_binary(struct linux_binprm * bprm)
 		}
 
 		error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
-				PROT_READ | PROT_WRITE | PROT_EXEC,
+				PROT_READ | PROT_WRITE,
 				MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE,
 				fd_offset + ex.a_text);
 		if (error != N_DATADDR(ex)) {
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 3892c1a..4e27c04 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -34,6 +34,7 @@
 #include <linux/utsname.h>
 #include <linux/coredump.h>
 #include <linux/sched.h>
+#include <linux/xattr.h>
 #include <asm/uaccess.h>
 #include <asm/param.h>
 #include <asm/page.h>
@@ -47,7 +48,7 @@
 
 static int load_elf_binary(struct linux_binprm *bprm);
 static unsigned long elf_map(struct file *, unsigned long, struct elf_phdr *,
-				int, int, unsigned long);
+				int, int, unsigned long) __intentional_overflow(-1);
 
 #ifdef CONFIG_USELIB
 static int load_elf_library(struct file *);
@@ -65,6 +66,14 @@ static int elf_core_dump(struct coredump_params *cprm);
 #define elf_core_dump	NULL
 #endif
 
+#ifdef CONFIG_PAX_MPROTECT
+static void elf_handle_mprotect(struct vm_area_struct *vma, unsigned long newflags);
+#endif
+
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+static void elf_handle_mmap(struct file *file);
+#endif
+
 #if ELF_EXEC_PAGESIZE > PAGE_SIZE
 #define ELF_MIN_ALIGN	ELF_EXEC_PAGESIZE
 #else
@@ -84,6 +93,15 @@ static struct linux_binfmt elf_format = {
 	.load_binary	= load_elf_binary,
 	.load_shlib	= load_elf_library,
 	.core_dump	= elf_core_dump,
+
+#ifdef CONFIG_PAX_MPROTECT
+	.handle_mprotect= elf_handle_mprotect,
+#endif
+
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	.handle_mmap	= elf_handle_mmap,
+#endif
+
 	.min_coredump	= ELF_EXEC_PAGESIZE,
 };
 
@@ -91,6 +109,8 @@ static struct linux_binfmt elf_format = {
 
 static int set_brk(unsigned long start, unsigned long end)
 {
+	unsigned long e = end;
+
 	start = ELF_PAGEALIGN(start);
 	end = ELF_PAGEALIGN(end);
 	if (end > start) {
@@ -99,7 +119,7 @@ static int set_brk(unsigned long start, unsigned long end)
 		if (BAD_ADDR(addr))
 			return addr;
 	}
-	current->mm->start_brk = current->mm->brk = end;
+	current->mm->start_brk = current->mm->brk = e;
 	return 0;
 }
 
@@ -160,12 +180,13 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 	elf_addr_t __user *u_rand_bytes;
 	const char *k_platform = ELF_PLATFORM;
 	const char *k_base_platform = ELF_BASE_PLATFORM;
-	unsigned char k_rand_bytes[16];
+	u32 k_rand_bytes[4];
 	int items;
 	elf_addr_t *elf_info;
 	int ei_index = 0;
 	const struct cred *cred = current_cred();
 	struct vm_area_struct *vma;
+	unsigned long saved_auxv[AT_VECTOR_SIZE];
 
 	/*
 	 * In some cases (e.g. Hyper-Threading), we want to avoid L1
@@ -207,8 +228,12 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 	 * Generate 16 random bytes for userspace PRNG seeding.
 	 */
 	get_random_bytes(k_rand_bytes, sizeof(k_rand_bytes));
-	u_rand_bytes = (elf_addr_t __user *)
-		       STACK_ALLOC(p, sizeof(k_rand_bytes));
+	prandom_seed(k_rand_bytes[0] ^ prandom_u32());
+	prandom_seed(k_rand_bytes[1] ^ prandom_u32());
+	prandom_seed(k_rand_bytes[2] ^ prandom_u32());
+	prandom_seed(k_rand_bytes[3] ^ prandom_u32());
+	p = STACK_ROUND(p, sizeof(k_rand_bytes));
+	u_rand_bytes = (elf_addr_t __user *) p;
 	if (__copy_to_user(u_rand_bytes, k_rand_bytes, sizeof(k_rand_bytes)))
 		return -EFAULT;
 
@@ -323,9 +348,11 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
 		return -EFAULT;
 	current->mm->env_end = p;
 
+	memcpy(saved_auxv, elf_info, ei_index * sizeof(elf_addr_t));
+
 	/* Put the elf_info on the stack in the right place.  */
 	sp = (elf_addr_t __user *)envp + 1;
-	if (copy_to_user(sp, elf_info, ei_index * sizeof(elf_addr_t)))
+	if (copy_to_user(sp, saved_auxv, ei_index * sizeof(elf_addr_t)))
 		return -EFAULT;
 	return 0;
 }
@@ -393,15 +420,14 @@ static unsigned long total_mapping_size(struct elf_phdr *cmds, int nr)
    an ELF header */
 
 static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
-		struct file *interpreter, unsigned long *interp_map_addr,
-		unsigned long no_base)
+		struct file *interpreter, unsigned long no_base)
 {
 	struct elf_phdr *elf_phdata;
 	struct elf_phdr *eppnt;
-	unsigned long load_addr = 0;
+	unsigned long load_addr = 0, pax_task_size = TASK_SIZE;
 	int load_addr_set = 0;
 	unsigned long last_bss = 0, elf_bss = 0;
-	unsigned long error = ~0UL;
+	unsigned long error = -EINVAL;
 	unsigned long total_size;
 	int retval, i, size;
 
@@ -447,6 +473,11 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
 		goto out_close;
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (current->mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
 	eppnt = elf_phdata;
 	for (i = 0; i < interp_elf_ex->e_phnum; i++, eppnt++) {
 		if (eppnt->p_type == PT_LOAD) {
@@ -470,8 +501,6 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
 			map_addr = elf_map(interpreter, load_addr + vaddr,
 					eppnt, elf_prot, elf_type, total_size);
 			total_size = 0;
-			if (!*interp_map_addr)
-				*interp_map_addr = map_addr;
 			error = map_addr;
 			if (BAD_ADDR(map_addr))
 				goto out_close;
@@ -490,8 +519,8 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
 			k = load_addr + eppnt->p_vaddr;
 			if (BAD_ADDR(k) ||
 			    eppnt->p_filesz > eppnt->p_memsz ||
-			    eppnt->p_memsz > TASK_SIZE ||
-			    TASK_SIZE - eppnt->p_memsz < k) {
+			    eppnt->p_memsz > pax_task_size ||
+			    pax_task_size - eppnt->p_memsz < k) {
 				error = -ENOMEM;
 				goto out_close;
 			}
@@ -530,9 +559,11 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
 		elf_bss = ELF_PAGESTART(elf_bss + ELF_MIN_ALIGN - 1);
 
 		/* Map the last of the bss segment */
-		error = vm_brk(elf_bss, last_bss - elf_bss);
-		if (BAD_ADDR(error))
-			goto out_close;
+		if (last_bss > elf_bss) {
+			error = vm_brk(elf_bss, last_bss - elf_bss);
+			if (BAD_ADDR(error))
+				goto out_close;
+		}
 	}
 
 	error = load_addr;
@@ -543,6 +574,336 @@ out:
 	return error;
 }
 
+#ifdef CONFIG_PAX_PT_PAX_FLAGS
+#ifdef CONFIG_PAX_SOFTMODE
+static unsigned long pax_parse_pt_pax_softmode(const struct elf_phdr * const elf_phdata)
+{
+	unsigned long pax_flags = 0UL;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (elf_phdata->p_flags & PF_PAGEEXEC)
+		pax_flags |= MF_PAX_PAGEEXEC;
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (elf_phdata->p_flags & PF_SEGMEXEC)
+		pax_flags |= MF_PAX_SEGMEXEC;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+	if ((elf_phdata->p_flags & PF_EMUTRAMP) && (pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)))
+		pax_flags |= MF_PAX_EMUTRAMP;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+	if (elf_phdata->p_flags & PF_MPROTECT)
+		pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
+	if (randomize_va_space && (elf_phdata->p_flags & PF_RANDMMAP))
+		pax_flags |= MF_PAX_RANDMMAP;
+#endif
+
+	return pax_flags;
+}
+#endif
+
+static unsigned long pax_parse_pt_pax_hardmode(const struct elf_phdr * const elf_phdata)
+{
+	unsigned long pax_flags = 0UL;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(elf_phdata->p_flags & PF_NOPAGEEXEC))
+		pax_flags |= MF_PAX_PAGEEXEC;
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (!(elf_phdata->p_flags & PF_NOSEGMEXEC))
+		pax_flags |= MF_PAX_SEGMEXEC;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+	if (!(elf_phdata->p_flags & PF_NOEMUTRAMP))
+		pax_flags |= MF_PAX_EMUTRAMP;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+	if (!(elf_phdata->p_flags & PF_NOMPROTECT))
+		pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
+	if (randomize_va_space && !(elf_phdata->p_flags & PF_NORANDMMAP))
+		pax_flags |= MF_PAX_RANDMMAP;
+#endif
+
+	return pax_flags;
+}
+#endif
+
+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
+#ifdef CONFIG_PAX_SOFTMODE
+static unsigned long pax_parse_xattr_pax_softmode(unsigned long pax_flags_softmode)
+{
+	unsigned long pax_flags = 0UL;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (pax_flags_softmode & MF_PAX_PAGEEXEC)
+		pax_flags |= MF_PAX_PAGEEXEC;
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (pax_flags_softmode & MF_PAX_SEGMEXEC)
+		pax_flags |= MF_PAX_SEGMEXEC;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+	if ((pax_flags_softmode & MF_PAX_EMUTRAMP) && (pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)))
+		pax_flags |= MF_PAX_EMUTRAMP;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+	if (pax_flags_softmode & MF_PAX_MPROTECT)
+		pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
+	if (randomize_va_space && (pax_flags_softmode & MF_PAX_RANDMMAP))
+		pax_flags |= MF_PAX_RANDMMAP;
+#endif
+
+	return pax_flags;
+}
+#endif
+
+static unsigned long pax_parse_xattr_pax_hardmode(unsigned long pax_flags_hardmode)
+{
+	unsigned long pax_flags = 0UL;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(pax_flags_hardmode & MF_PAX_PAGEEXEC))
+		pax_flags |= MF_PAX_PAGEEXEC;
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (!(pax_flags_hardmode & MF_PAX_SEGMEXEC))
+		pax_flags |= MF_PAX_SEGMEXEC;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+	if (!(pax_flags_hardmode & MF_PAX_EMUTRAMP))
+		pax_flags |= MF_PAX_EMUTRAMP;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+	if (!(pax_flags_hardmode & MF_PAX_MPROTECT))
+		pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
+	if (randomize_va_space && !(pax_flags_hardmode & MF_PAX_RANDMMAP))
+		pax_flags |= MF_PAX_RANDMMAP;
+#endif
+
+	return pax_flags;
+}
+#endif
+
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+static unsigned long pax_parse_defaults(void)
+{
+	unsigned long pax_flags = 0UL;
+
+#ifdef CONFIG_PAX_SOFTMODE
+	if (pax_softmode)
+		return pax_flags;
+#endif
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	pax_flags |= MF_PAX_PAGEEXEC;
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_flags |= MF_PAX_SEGMEXEC;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+	pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (randomize_va_space)
+		pax_flags |= MF_PAX_RANDMMAP;
+#endif
+
+	return pax_flags;
+}
+
+static unsigned long pax_parse_ei_pax(const struct elfhdr * const elf_ex)
+{
+	unsigned long pax_flags = PAX_PARSE_FLAGS_FALLBACK;
+
+#ifdef CONFIG_PAX_EI_PAX
+
+#ifdef CONFIG_PAX_SOFTMODE
+	if (pax_softmode)
+		return pax_flags;
+#endif
+
+	pax_flags = 0UL;
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	if (!(elf_ex->e_ident[EI_PAX] & EF_PAX_PAGEEXEC))
+		pax_flags |= MF_PAX_PAGEEXEC;
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (!(elf_ex->e_ident[EI_PAX] & EF_PAX_SEGMEXEC))
+		pax_flags |= MF_PAX_SEGMEXEC;
+#endif
+
+#ifdef CONFIG_PAX_EMUTRAMP
+	if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) && (elf_ex->e_ident[EI_PAX] & EF_PAX_EMUTRAMP))
+		pax_flags |= MF_PAX_EMUTRAMP;
+#endif
+
+#ifdef CONFIG_PAX_MPROTECT
+	if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) && !(elf_ex->e_ident[EI_PAX] & EF_PAX_MPROTECT))
+		pax_flags |= MF_PAX_MPROTECT;
+#endif
+
+#ifdef CONFIG_PAX_ASLR
+	if (randomize_va_space && !(elf_ex->e_ident[EI_PAX] & EF_PAX_RANDMMAP))
+		pax_flags |= MF_PAX_RANDMMAP;
+#endif
+
+#endif
+
+	return pax_flags;
+
+}
+
+static unsigned long pax_parse_pt_pax(const struct elfhdr * const elf_ex, const struct elf_phdr * const elf_phdata)
+{
+
+#ifdef CONFIG_PAX_PT_PAX_FLAGS
+	unsigned long i;
+
+	for (i = 0UL; i < elf_ex->e_phnum; i++)
+		if (elf_phdata[i].p_type == PT_PAX_FLAGS) {
+			if (((elf_phdata[i].p_flags & PF_PAGEEXEC) && (elf_phdata[i].p_flags & PF_NOPAGEEXEC)) ||
+			    ((elf_phdata[i].p_flags & PF_SEGMEXEC) && (elf_phdata[i].p_flags & PF_NOSEGMEXEC)) ||
+			    ((elf_phdata[i].p_flags & PF_EMUTRAMP) && (elf_phdata[i].p_flags & PF_NOEMUTRAMP)) ||
+			    ((elf_phdata[i].p_flags & PF_MPROTECT) && (elf_phdata[i].p_flags & PF_NOMPROTECT)) ||
+			    ((elf_phdata[i].p_flags & PF_RANDMMAP) && (elf_phdata[i].p_flags & PF_NORANDMMAP)))
+				return PAX_PARSE_FLAGS_FALLBACK;
+
+#ifdef CONFIG_PAX_SOFTMODE
+			if (pax_softmode)
+				return pax_parse_pt_pax_softmode(&elf_phdata[i]);
+			else
+#endif
+
+				return pax_parse_pt_pax_hardmode(&elf_phdata[i]);
+			break;
+		}
+#endif
+
+	return PAX_PARSE_FLAGS_FALLBACK;
+}
+
+static unsigned long pax_parse_xattr_pax(struct file * const file)
+{
+
+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
+	ssize_t xattr_size, i;
+	unsigned char xattr_value[sizeof("pemrs") - 1];
+	unsigned long pax_flags_hardmode = 0UL, pax_flags_softmode = 0UL;
+
+	xattr_size = pax_getxattr(file->f_path.dentry, xattr_value, sizeof xattr_value);
+	if (xattr_size < 0 || xattr_size > sizeof xattr_value)
+		return PAX_PARSE_FLAGS_FALLBACK;
+
+	for (i = 0; i < xattr_size; i++)
+		switch (xattr_value[i]) {
+		default:
+			return PAX_PARSE_FLAGS_FALLBACK;
+
+#define parse_flag(option1, option2, flag)			\
+		case option1:					\
+			if (pax_flags_hardmode & MF_PAX_##flag)	\
+				return PAX_PARSE_FLAGS_FALLBACK;\
+			pax_flags_hardmode |= MF_PAX_##flag;	\
+			break;					\
+		case option2:					\
+			if (pax_flags_softmode & MF_PAX_##flag)	\
+				return PAX_PARSE_FLAGS_FALLBACK;\
+			pax_flags_softmode |= MF_PAX_##flag;	\
+			break;
+
+		parse_flag('p', 'P', PAGEEXEC);
+		parse_flag('e', 'E', EMUTRAMP);
+		parse_flag('m', 'M', MPROTECT);
+		parse_flag('r', 'R', RANDMMAP);
+		parse_flag('s', 'S', SEGMEXEC);
+
+#undef parse_flag
+		}
+
+	if (pax_flags_hardmode & pax_flags_softmode)
+		return PAX_PARSE_FLAGS_FALLBACK;
+
+#ifdef CONFIG_PAX_SOFTMODE
+	if (pax_softmode)
+		return pax_parse_xattr_pax_softmode(pax_flags_softmode);
+	else
+#endif
+
+		return pax_parse_xattr_pax_hardmode(pax_flags_hardmode);
+#else
+	return PAX_PARSE_FLAGS_FALLBACK;
+#endif
+
+}
+
+static long pax_parse_pax_flags(const struct elfhdr * const elf_ex, const struct elf_phdr * const elf_phdata, struct file * const file)
+{
+	unsigned long pax_flags, ei_pax_flags,  pt_pax_flags, xattr_pax_flags;
+
+	pax_flags = pax_parse_defaults();
+	ei_pax_flags = pax_parse_ei_pax(elf_ex);
+	pt_pax_flags = pax_parse_pt_pax(elf_ex, elf_phdata);
+	xattr_pax_flags = pax_parse_xattr_pax(file);
+
+	if (pt_pax_flags != PAX_PARSE_FLAGS_FALLBACK &&
+	    xattr_pax_flags != PAX_PARSE_FLAGS_FALLBACK &&
+	    pt_pax_flags != xattr_pax_flags)
+		return -EINVAL;
+	if (xattr_pax_flags != PAX_PARSE_FLAGS_FALLBACK)
+		pax_flags = xattr_pax_flags;
+	else if (pt_pax_flags != PAX_PARSE_FLAGS_FALLBACK)
+		pax_flags = pt_pax_flags;
+	else if (ei_pax_flags != PAX_PARSE_FLAGS_FALLBACK)
+		pax_flags = ei_pax_flags;
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC)
+	if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
+		if ((__supported_pte_mask & _PAGE_NX))
+			pax_flags &= ~MF_PAX_SEGMEXEC;
+		else
+			pax_flags &= ~MF_PAX_PAGEEXEC;
+	}
+#endif
+
+	if (0 > pax_check_flags(&pax_flags))
+		return -EINVAL;
+
+	current->mm->pax_flags = pax_flags;
+	return 0;
+}
+#endif
+
 /*
  * These are the functions used to load ELF style executables and shared
  * libraries.  There is no binary dependent code anywhere else.
@@ -556,6 +917,11 @@ static unsigned long randomize_stack_top(unsigned long stack_top)
 {
 	unsigned int random_variable = 0;
 
+#ifdef CONFIG_PAX_RANDUSTACK
+	if (current->mm->pax_flags & MF_PAX_RANDMMAP)
+		return stack_top - current->mm->delta_stack;
+#endif
+
 	if ((current->flags & PF_RANDOMIZE) &&
 		!(current->personality & ADDR_NO_RANDOMIZE)) {
 		random_variable = get_random_int() & STACK_RND_MASK;
@@ -574,7 +940,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
  	unsigned long load_addr = 0, load_bias = 0;
 	int load_addr_set = 0;
 	char * elf_interpreter = NULL;
-	unsigned long error;
+	unsigned long error = 0;
 	struct elf_phdr *elf_ppnt, *elf_phdata;
 	unsigned long elf_bss, elf_brk;
 	int retval, i;
@@ -589,6 +955,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
 		struct elfhdr elf_ex;
 		struct elfhdr interp_elf_ex;
 	} *loc;
+	unsigned long pax_task_size;
 
 	loc = kmalloc(sizeof(*loc), GFP_KERNEL);
 	if (!loc) {
@@ -726,6 +1093,77 @@ static int load_elf_binary(struct linux_binprm *bprm)
 	/* Do this immediately, since STACK_TOP as used in setup_arg_pages
 	   may depend on the personality.  */
 	SET_PERSONALITY(loc->elf_ex);
+
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+	current->mm->pax_flags = 0UL;
+#endif
+
+#ifdef CONFIG_PAX_DLRESOLVE
+	current->mm->call_dl_resolve = 0UL;
+#endif
+
+#if defined(CONFIG_PPC32) && defined(CONFIG_PAX_EMUSIGRT)
+	current->mm->call_syscall = 0UL;
+#endif
+
+#ifdef CONFIG_PAX_ASLR
+	current->mm->delta_mmap = 0UL;
+	current->mm->delta_stack = 0UL;
+#endif
+
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+	if (0 > pax_parse_pax_flags(&loc->elf_ex, elf_phdata, bprm->file)) {
+		send_sig(SIGKILL, current, 0);
+		goto out_free_dentry;
+	}
+#endif
+
+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
+	pax_set_initial_flags(bprm);
+#elif defined(CONFIG_PAX_HOOK_ACL_FLAGS)
+	if (pax_set_initial_flags_func)
+		(pax_set_initial_flags_func)(bprm);
+#endif
+
+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
+	if ((current->mm->pax_flags & MF_PAX_PAGEEXEC) && !(__supported_pte_mask & _PAGE_NX)) {
+		current->mm->context.user_cs_limit = PAGE_SIZE;
+		current->mm->def_flags |= VM_PAGEEXEC | VM_NOHUGEPAGE;
+	}
+#endif
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (current->mm->pax_flags & MF_PAX_SEGMEXEC) {
+		current->mm->context.user_cs_base = SEGMEXEC_TASK_SIZE;
+		current->mm->context.user_cs_limit = TASK_SIZE-SEGMEXEC_TASK_SIZE;
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+		current->mm->def_flags |= VM_NOHUGEPAGE;
+	} else
+#endif
+
+	pax_task_size = TASK_SIZE;
+
+#if defined(CONFIG_ARCH_TRACK_EXEC_LIMIT) || defined(CONFIG_PAX_SEGMEXEC)
+	if (current->mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
+		set_user_cs(current->mm->context.user_cs_base, current->mm->context.user_cs_limit, get_cpu());
+		put_cpu();
+	}
+#endif
+
+#ifdef CONFIG_PAX_ASLR
+	if (current->mm->pax_flags & MF_PAX_RANDMMAP) {
+		current->mm->delta_mmap = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN)-1)) << PAGE_SHIFT;
+		current->mm->delta_stack = (pax_get_random_long() & ((1UL << PAX_DELTA_STACK_LEN)-1)) << PAGE_SHIFT;
+	}
+#endif
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+	if (current->mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
+		executable_stack = EXSTACK_DISABLE_X;
+		current->personality &= ~READ_IMPLIES_EXEC;
+	} else
+#endif
+
 	if (elf_read_implies_exec(loc->elf_ex, executable_stack))
 		current->personality |= READ_IMPLIES_EXEC;
 
@@ -815,6 +1253,20 @@ static int load_elf_binary(struct linux_binprm *bprm)
 #else
 			load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr);
 #endif
+
+#ifdef CONFIG_PAX_RANDMMAP
+			/* PaX: randomize base address at the default exe base if requested */
+			if ((current->mm->pax_flags & MF_PAX_RANDMMAP) && elf_interpreter) {
+#ifdef CONFIG_SPARC64
+				load_bias = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN) - 1)) << (PAGE_SHIFT+1);
+#else
+				load_bias = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN) - 1)) << PAGE_SHIFT;
+#endif
+				load_bias = ELF_PAGESTART(PAX_ELF_ET_DYN_BASE - vaddr + load_bias);
+				elf_flags |= MAP_FIXED;
+			}
+#endif
+
 		}
 
 		error = elf_map(bprm->file, load_bias + vaddr, elf_ppnt,
@@ -847,9 +1299,9 @@ static int load_elf_binary(struct linux_binprm *bprm)
 		 * allowed task size. Note that p_filesz must always be
 		 * <= p_memsz so it is only necessary to check p_memsz.
 		 */
-		if (BAD_ADDR(k) || elf_ppnt->p_filesz > elf_ppnt->p_memsz ||
-		    elf_ppnt->p_memsz > TASK_SIZE ||
-		    TASK_SIZE - elf_ppnt->p_memsz < k) {
+		if (k >= pax_task_size || elf_ppnt->p_filesz > elf_ppnt->p_memsz ||
+		    elf_ppnt->p_memsz > pax_task_size ||
+		    pax_task_size - elf_ppnt->p_memsz < k) {
 			/* set_brk can never work. Avoid overflows. */
 			send_sig(SIGKILL, current, 0);
 			retval = -EINVAL;
@@ -888,17 +1340,45 @@ static int load_elf_binary(struct linux_binprm *bprm)
 		goto out_free_dentry;
 	}
 	if (likely(elf_bss != elf_brk) && unlikely(padzero(elf_bss))) {
-		send_sig(SIGSEGV, current, 0);
-		retval = -EFAULT; /* Nobody gets to see this, but.. */
-		goto out_free_dentry;
+		/*
+		 * This bss-zeroing can fail if the ELF
+		 * file specifies odd protections. So
+		 * we don't check the return value
+		 */
 	}
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (current->mm->pax_flags & MF_PAX_RANDMMAP) {
+		unsigned long start, size, flags;
+		vm_flags_t vm_flags;
+
+		start = ELF_PAGEALIGN(elf_brk);
+		size = PAGE_SIZE + ((pax_get_random_long() & ((1UL << 22) - 1UL)) << 4);
+		flags = MAP_FIXED | MAP_PRIVATE;
+		vm_flags = VM_DONTEXPAND | VM_DONTDUMP;
+
+		down_write(&current->mm->mmap_sem);
+		start = get_unmapped_area(NULL, start, PAGE_ALIGN(size), 0, flags);
+		retval = -ENOMEM;
+		if (!IS_ERR_VALUE(start) && !find_vma_intersection(current->mm, start, start + size + PAGE_SIZE)) {
+//			if (current->personality & ADDR_NO_RANDOMIZE)
+//				vm_flags |= VM_READ | VM_MAYREAD;
+			start = mmap_region(NULL, start, PAGE_ALIGN(size), vm_flags, 0);
+			retval = IS_ERR_VALUE(start) ? start : 0;
+		}
+		up_write(&current->mm->mmap_sem);
+		if (retval == 0)
+			retval = set_brk(start + size, start + size + PAGE_SIZE);
+		if (retval < 0) {
+			send_sig(SIGKILL, current, 0);
+			goto out_free_dentry;
+		}
+	}
+#endif
+
 	if (elf_interpreter) {
-		unsigned long interp_map_addr = 0;
-
 		elf_entry = load_elf_interp(&loc->interp_elf_ex,
 					    interpreter,
-					    &interp_map_addr,
 					    load_bias);
 		if (!IS_ERR((void *)elf_entry)) {
 			/*
@@ -1130,7 +1610,7 @@ static bool always_dump_vma(struct vm_area_struct *vma)
  * Decide what to dump of a segment, part, all or none.
  */
 static unsigned long vma_dump_size(struct vm_area_struct *vma,
-				   unsigned long mm_flags)
+				   unsigned long mm_flags, long signr)
 {
 #define FILTER(type)	(mm_flags & (1UL << MMF_DUMP_##type))
 
@@ -1168,7 +1648,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
 	if (vma->vm_file == NULL)
 		return 0;
 
-	if (FILTER(MAPPED_PRIVATE))
+	if (signr == SIGKILL || FILTER(MAPPED_PRIVATE))
 		goto whole;
 
 	/*
@@ -1375,9 +1855,9 @@ static void fill_auxv_note(struct memelfnote *note, struct mm_struct *mm)
 {
 	elf_addr_t *auxv = (elf_addr_t *) mm->saved_auxv;
 	int i = 0;
-	do
+	do {
 		i += 2;
-	while (auxv[i - 2] != AT_NULL);
+	} while (auxv[i - 2] != AT_NULL);
 	fill_note(note, "CORE", NT_AUXV, i * sizeof(elf_addr_t), auxv);
 }
 
@@ -1386,7 +1866,7 @@ static void fill_siginfo_note(struct memelfnote *note, user_siginfo_t *csigdata,
 {
 	mm_segment_t old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	copy_siginfo_to_user((user_siginfo_t __user *) csigdata, siginfo);
+	copy_siginfo_to_user((user_siginfo_t __force_user *) csigdata, siginfo);
 	set_fs(old_fs);
 	fill_note(note, "CORE", NT_SIGINFO, sizeof(*csigdata), csigdata);
 }
@@ -2010,14 +2490,14 @@ static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum,
 }
 
 static size_t elf_core_vma_data_size(struct vm_area_struct *gate_vma,
-				     unsigned long mm_flags)
+				     struct coredump_params *cprm)
 {
 	struct vm_area_struct *vma;
 	size_t size = 0;
 
 	for (vma = first_vma(current, gate_vma); vma != NULL;
 	     vma = next_vma(vma, gate_vma))
-		size += vma_dump_size(vma, mm_flags);
+		size += vma_dump_size(vma, cprm->mm_flags, cprm->siginfo->si_signo);
 	return size;
 }
 
@@ -2108,7 +2588,7 @@ static int elf_core_dump(struct coredump_params *cprm)
 
 	dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
 
-	offset += elf_core_vma_data_size(gate_vma, cprm->mm_flags);
+	offset += elf_core_vma_data_size(gate_vma, cprm);
 	offset += elf_core_extra_data_size();
 	e_shoff = offset;
 
@@ -2136,7 +2616,7 @@ static int elf_core_dump(struct coredump_params *cprm)
 		phdr.p_offset = offset;
 		phdr.p_vaddr = vma->vm_start;
 		phdr.p_paddr = 0;
-		phdr.p_filesz = vma_dump_size(vma, cprm->mm_flags);
+		phdr.p_filesz = vma_dump_size(vma, cprm->mm_flags, cprm->siginfo->si_signo);
 		phdr.p_memsz = vma->vm_end - vma->vm_start;
 		offset += phdr.p_filesz;
 		phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0;
@@ -2169,7 +2649,7 @@ static int elf_core_dump(struct coredump_params *cprm)
 		unsigned long addr;
 		unsigned long end;
 
-		end = vma->vm_start + vma_dump_size(vma, cprm->mm_flags);
+		end = vma->vm_start + vma_dump_size(vma, cprm->mm_flags, cprm->siginfo->si_signo);
 
 		for (addr = vma->vm_start; addr < end; addr += PAGE_SIZE) {
 			struct page *page;
@@ -2210,6 +2690,167 @@ out:
 
 #endif		/* CONFIG_ELF_CORE */
 
+#ifdef CONFIG_PAX_MPROTECT
+/* PaX: non-PIC ELF libraries need relocations on their executable segments
+ * therefore we'll grant them VM_MAYWRITE once during their life. Similarly
+ * we'll remove VM_MAYWRITE for good on RELRO segments.
+ *
+ * The checks favour ld-linux.so behaviour which operates on a per ELF segment
+ * basis because we want to allow the common case and not the special ones.
+ */
+static void elf_handle_mprotect(struct vm_area_struct *vma, unsigned long newflags)
+{
+	struct elfhdr elf_h;
+	struct elf_phdr elf_p;
+	unsigned long i;
+	unsigned long oldflags;
+	bool is_textrel_rw, is_textrel_rx, is_relro;
+
+	if (!(vma->vm_mm->pax_flags & MF_PAX_MPROTECT) || !vma->vm_file)
+		return;
+
+	oldflags = vma->vm_flags & (VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_EXEC | VM_WRITE | VM_READ);
+	newflags &= VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_EXEC | VM_WRITE | VM_READ;
+
+#ifdef CONFIG_PAX_ELFRELOCS
+	/* possible TEXTREL */
+	is_textrel_rw = !vma->anon_vma && oldflags == (VM_MAYEXEC | VM_MAYREAD | VM_EXEC | VM_READ) && newflags == (VM_WRITE | VM_READ);
+	is_textrel_rx = vma->anon_vma && oldflags == (VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_WRITE | VM_READ) && newflags == (VM_EXEC | VM_READ);
+#else
+	is_textrel_rw = false;
+	is_textrel_rx = false;
+#endif
+
+	/* possible RELRO */
+	is_relro = vma->anon_vma && oldflags == (VM_MAYWRITE | VM_MAYREAD | VM_READ) && newflags == (VM_MAYWRITE | VM_MAYREAD | VM_READ);
+
+	if (!is_textrel_rw && !is_textrel_rx && !is_relro)
+		return;
+
+	if (sizeof(elf_h) != kernel_read(vma->vm_file, 0UL, (char *)&elf_h, sizeof(elf_h)) ||
+	    memcmp(elf_h.e_ident, ELFMAG, SELFMAG) ||
+
+#ifdef CONFIG_PAX_ETEXECRELOCS
+	    ((is_textrel_rw || is_textrel_rx) && (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC)) ||
+#else
+	    ((is_textrel_rw || is_textrel_rx) && elf_h.e_type != ET_DYN) ||
+#endif
+
+	    (is_relro && (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC)) ||
+	    !elf_check_arch(&elf_h) ||
+	    elf_h.e_phentsize != sizeof(struct elf_phdr) ||
+	    elf_h.e_phnum > 65536UL / sizeof(struct elf_phdr))
+		return;
+
+	for (i = 0UL; i < elf_h.e_phnum; i++) {
+		if (sizeof(elf_p) != kernel_read(vma->vm_file, elf_h.e_phoff + i*sizeof(elf_p), (char *)&elf_p, sizeof(elf_p)))
+			return;
+		switch (elf_p.p_type) {
+		case PT_DYNAMIC:
+			if (!is_textrel_rw && !is_textrel_rx)
+				continue;
+			i = 0UL;
+			while ((i+1) * sizeof(elf_dyn) <= elf_p.p_filesz) {
+				elf_dyn dyn;
+
+				if (sizeof(dyn) != kernel_read(vma->vm_file, elf_p.p_offset + i*sizeof(dyn), (char *)&dyn, sizeof(dyn)))
+					break;
+				if (dyn.d_tag == DT_NULL)
+					break;
+				if (dyn.d_tag == DT_TEXTREL || (dyn.d_tag == DT_FLAGS && (dyn.d_un.d_val & DF_TEXTREL))) {
+					gr_log_textrel(vma);
+					if (is_textrel_rw)
+						vma->vm_flags |= VM_MAYWRITE;
+					else
+						/* PaX: disallow write access after relocs are done, hopefully noone else needs it... */
+						vma->vm_flags &= ~VM_MAYWRITE;
+					break;
+				}
+				i++;
+			}
+			is_textrel_rw = false;
+			is_textrel_rx = false;
+			continue;
+
+		case PT_GNU_RELRO:
+			if (!is_relro)
+				continue;
+			if ((elf_p.p_offset >> PAGE_SHIFT) == vma->vm_pgoff && ELF_PAGEALIGN(elf_p.p_memsz) == vma->vm_end - vma->vm_start)
+				vma->vm_flags &= ~VM_MAYWRITE;
+			is_relro = false;
+			continue;
+
+#ifdef CONFIG_PAX_PT_PAX_FLAGS
+		case PT_PAX_FLAGS: {
+			const char *msg_mprotect = "", *msg_emutramp = "";
+			char *buffer_lib, *buffer_exe;
+
+			if (elf_p.p_flags & PF_NOMPROTECT)
+				msg_mprotect = "MPROTECT disabled";
+
+#ifdef CONFIG_PAX_EMUTRAMP
+			if (!(vma->vm_mm->pax_flags & MF_PAX_EMUTRAMP) && !(elf_p.p_flags & PF_NOEMUTRAMP))
+				msg_emutramp = "EMUTRAMP enabled";
+#endif
+
+			if (!msg_mprotect[0] && !msg_emutramp[0])
+				continue;
+
+			if (!printk_ratelimit())
+				continue;
+
+			buffer_lib = (char *)__get_free_page(GFP_KERNEL);
+			buffer_exe = (char *)__get_free_page(GFP_KERNEL);
+			if (buffer_lib && buffer_exe) {
+				char *path_lib, *path_exe;
+
+				path_lib = pax_get_path(&vma->vm_file->f_path, buffer_lib, PAGE_SIZE);
+				path_exe = pax_get_path(&vma->vm_mm->exe_file->f_path, buffer_exe, PAGE_SIZE);
+
+				pr_info("PAX: %s wants %s%s%s on %s\n", path_lib, msg_mprotect,
+					(msg_mprotect[0] && msg_emutramp[0] ? " and " : ""), msg_emutramp, path_exe);
+
+			}
+			free_page((unsigned long)buffer_exe);
+			free_page((unsigned long)buffer_lib);
+			continue;
+		}
+#endif
+
+		}
+	}
+}
+#endif
+
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+
+extern int grsec_enable_log_rwxmaps;
+
+static void elf_handle_mmap(struct file *file)
+{
+	struct elfhdr elf_h;
+	struct elf_phdr elf_p;
+	unsigned long i;
+
+	if (!grsec_enable_log_rwxmaps)
+		return;
+
+	if (sizeof(elf_h) != kernel_read(file, 0UL, (char *)&elf_h, sizeof(elf_h)) ||
+	    memcmp(elf_h.e_ident, ELFMAG, SELFMAG) ||
+	    (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC) || !elf_check_arch(&elf_h) ||
+	    elf_h.e_phentsize != sizeof(struct elf_phdr) ||
+	    elf_h.e_phnum > 65536UL / sizeof(struct elf_phdr))
+		return;
+
+	for (i = 0UL; i < elf_h.e_phnum; i++) {
+		if (sizeof(elf_p) != kernel_read(file, elf_h.e_phoff + i*sizeof(elf_p), (char *)&elf_p, sizeof(elf_p)))
+			return;
+		if (elf_p.p_type == PT_GNU_STACK && (elf_p.p_flags & PF_X))
+			gr_log_ptgnustack(file);
+	}
+}
+#endif
+
 static int __init init_elf_binfmt(void)
 {
 	register_binfmt(&elf_format);
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 6d72746..536d1db 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -701,7 +701,7 @@ static bool bd_may_claim(struct block_device *bdev, struct block_device *whole,
 	else if (bdev->bd_contains == bdev)
 		return true;  	 /* is a whole device which isn't held */
 
-	else if (whole->bd_holder == bd_may_claim)
+	else if (whole->bd_holder == (void *)bd_may_claim)
 		return true; 	 /* is a partition of a device that is being partitioned */
 	else if (whole->bd_holder != NULL)
 		return false;	 /* is a partition of a held device */
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index aeab453..48dbafc 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -1184,9 +1184,12 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
 		free_extent_buffer(buf);
 		add_root_to_dirty_list(root);
 	} else {
-		if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID)
-			parent_start = parent->start;
-		else
+		if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
+			if (parent)
+				parent_start = parent->start;
+			else
+				parent_start = 0;
+		} else
 			parent_start = 0;
 
 		WARN_ON(trans->transid != btrfs_header_generation(parent));
diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index a2e90f8..5135e5f 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -462,7 +462,7 @@ static int __btrfs_add_delayed_deletion_item(struct btrfs_delayed_node *node,
 
 static void finish_one_item(struct btrfs_delayed_root *delayed_root)
 {
-	int seq = atomic_inc_return(&delayed_root->items_seq);
+	int seq = atomic_inc_return_unchecked(&delayed_root->items_seq);
 	if ((atomic_dec_return(&delayed_root->items) <
 	    BTRFS_DELAYED_BACKGROUND || seq % BTRFS_DELAYED_BATCH == 0) &&
 	    waitqueue_active(&delayed_root->wait))
@@ -1412,7 +1412,7 @@ void btrfs_assert_delayed_root_empty(struct btrfs_root *root)
 
 static int could_end_wait(struct btrfs_delayed_root *delayed_root, int seq)
 {
-	int val = atomic_read(&delayed_root->items_seq);
+	int val = atomic_read_unchecked(&delayed_root->items_seq);
 
 	if (val < seq || val >= seq + BTRFS_DELAYED_BATCH)
 		return 1;
@@ -1436,7 +1436,7 @@ void btrfs_balance_delayed_items(struct btrfs_root *root)
 		int seq;
 		int ret;
 
-		seq = atomic_read(&delayed_root->items_seq);
+		seq = atomic_read_unchecked(&delayed_root->items_seq);
 
 		ret = btrfs_wq_run_delayed_node(delayed_root, root, 0);
 		if (ret)
diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h
index f70119f..ab5894d 100644
--- a/fs/btrfs/delayed-inode.h
+++ b/fs/btrfs/delayed-inode.h
@@ -43,7 +43,7 @@ struct btrfs_delayed_root {
 	 */
 	struct list_head prepare_list;
 	atomic_t items;		/* for delayed items */
-	atomic_t items_seq;	/* for delayed items */
+	atomic_unchecked_t items_seq;	/* for delayed items */
 	int nodes;		/* for delayed nodes */
 	wait_queue_head_t wait;
 };
@@ -90,7 +90,7 @@ static inline void btrfs_init_delayed_root(
 				struct btrfs_delayed_root *delayed_root)
 {
 	atomic_set(&delayed_root->items, 0);
-	atomic_set(&delayed_root->items_seq, 0);
+	atomic_set_unchecked(&delayed_root->items_seq, 0);
 	delayed_root->nodes = 0;
 	spin_lock_init(&delayed_root->lock);
 	init_waitqueue_head(&delayed_root->wait);
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 47aceb4..7d28b1c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -3965,9 +3965,12 @@ static long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg)
 	for (i = 0; i < num_types; i++) {
 		struct btrfs_space_info *tmp;
 
+		/* Don't copy in more than we allocated */
 		if (!slot_count)
 			break;
 
+		slot_count--;
+
 		info = NULL;
 		rcu_read_lock();
 		list_for_each_entry_rcu(tmp, &root->fs_info->space_info,
@@ -3989,10 +3992,7 @@ static long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg)
 				memcpy(dest, &space, sizeof(space));
 				dest++;
 				space_args.total_spaces++;
-				slot_count--;
 			}
-			if (!slot_count)
-				break;
 		}
 		up_read(&info->groups_sem);
 	}
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 8e16bca..6eabd9e 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -270,7 +270,7 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
 		           function, line, errstr);
 		return;
 	}
-	ACCESS_ONCE(trans->transaction->aborted) = errno;
+	ACCESS_ONCE_RW(trans->transaction->aborted) = errno;
 	/* Wake up anybody who may be waiting on this transaction */
 	wake_up(&root->fs_info->transaction_wait);
 	wake_up(&root->fs_info->transaction_blocked_wait);
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 7869936..7e153dc 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -475,7 +475,7 @@ static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add)
 	for (set = 0; set < FEAT_MAX; set++) {
 		int i;
 		struct attribute *attrs[2];
-		struct attribute_group agroup = {
+		attribute_group_no_const agroup = {
 			.name = "features",
 			.attrs = attrs,
 		};
diff --git a/fs/btrfs/tree-log.h b/fs/btrfs/tree-log.h
index 7f5b41b..e589c13 100644
--- a/fs/btrfs/tree-log.h
+++ b/fs/btrfs/tree-log.h
@@ -41,7 +41,7 @@ static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx)
 static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
 					     struct btrfs_trans_handle *trans)
 {
-	ACCESS_ONCE(fs_info->last_trans_log_full_commit) = trans->transid;
+	ACCESS_ONCE_RW(fs_info->last_trans_log_full_commit) = trans->transid;
 }
 
 static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
diff --git a/fs/buffer.c b/fs/buffer.c
index eba6e4f..af1182c 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3429,7 +3429,7 @@ void __init buffer_init(void)
 	bh_cachep = kmem_cache_create("buffer_head",
 			sizeof(struct buffer_head), 0,
 				(SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|
-				SLAB_MEM_SPREAD),
+				SLAB_MEM_SPREAD|SLAB_NO_SANITIZE),
 				NULL);
 
 	/*
diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c
index d749731..dd333a6 100644
--- a/fs/cachefiles/bind.c
+++ b/fs/cachefiles/bind.c
@@ -39,13 +39,11 @@ int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args)
 	       args);
 
 	/* start by checking things over */
-	ASSERT(cache->fstop_percent >= 0 &&
-	       cache->fstop_percent < cache->fcull_percent &&
+	ASSERT(cache->fstop_percent < cache->fcull_percent &&
 	       cache->fcull_percent < cache->frun_percent &&
 	       cache->frun_percent  < 100);
 
-	ASSERT(cache->bstop_percent >= 0 &&
-	       cache->bstop_percent < cache->bcull_percent &&
+	ASSERT(cache->bstop_percent < cache->bcull_percent &&
 	       cache->bcull_percent < cache->brun_percent &&
 	       cache->brun_percent  < 100);
 
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
index b078d30..db23012 100644
--- a/fs/cachefiles/daemon.c
+++ b/fs/cachefiles/daemon.c
@@ -196,7 +196,7 @@ static ssize_t cachefiles_daemon_read(struct file *file, char __user *_buffer,
 	if (n > buflen)
 		return -EMSGSIZE;
 
-	if (copy_to_user(_buffer, buffer, n) != 0)
+	if (n > sizeof(buffer) || copy_to_user(_buffer, buffer, n) != 0)
 		return -EFAULT;
 
 	return n;
@@ -222,7 +222,7 @@ static ssize_t cachefiles_daemon_write(struct file *file,
 	if (test_bit(CACHEFILES_DEAD, &cache->flags))
 		return -EIO;
 
-	if (datalen < 0 || datalen > PAGE_SIZE - 1)
+	if (datalen > PAGE_SIZE - 1)
 		return -EOPNOTSUPP;
 
 	/* drag the command string into the kernel so we can parse it */
@@ -385,7 +385,7 @@ static int cachefiles_daemon_fstop(struct cachefiles_cache *cache, char *args)
 	if (args[0] != '%' || args[1] != '\0')
 		return -EINVAL;
 
-	if (fstop < 0 || fstop >= cache->fcull_percent)
+	if (fstop >= cache->fcull_percent)
 		return cachefiles_daemon_range_error(cache, args);
 
 	cache->fstop_percent = fstop;
@@ -457,7 +457,7 @@ static int cachefiles_daemon_bstop(struct cachefiles_cache *cache, char *args)
 	if (args[0] != '%' || args[1] != '\0')
 		return -EINVAL;
 
-	if (bstop < 0 || bstop >= cache->bcull_percent)
+	if (bstop >= cache->bcull_percent)
 		return cachefiles_daemon_range_error(cache, args);
 
 	cache->bstop_percent = bstop;
diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h
index 3d50998..0550d67 100644
--- a/fs/cachefiles/internal.h
+++ b/fs/cachefiles/internal.h
@@ -66,7 +66,7 @@ struct cachefiles_cache {
 	wait_queue_head_t		daemon_pollwq;	/* poll waitqueue for daemon */
 	struct rb_root			active_nodes;	/* active nodes (can't be culled) */
 	rwlock_t			active_lock;	/* lock for active_nodes */
-	atomic_t			gravecounter;	/* graveyard uniquifier */
+	atomic_unchecked_t		gravecounter;	/* graveyard uniquifier */
 	unsigned			frun_percent;	/* when to stop culling (% files) */
 	unsigned			fcull_percent;	/* when to start culling (% files) */
 	unsigned			fstop_percent;	/* when to stop allocating (% files) */
@@ -178,19 +178,19 @@ extern int cachefiles_check_in_use(struct cachefiles_cache *cache,
  * proc.c
  */
 #ifdef CONFIG_CACHEFILES_HISTOGRAM
-extern atomic_t cachefiles_lookup_histogram[HZ];
-extern atomic_t cachefiles_mkdir_histogram[HZ];
-extern atomic_t cachefiles_create_histogram[HZ];
+extern atomic_unchecked_t cachefiles_lookup_histogram[HZ];
+extern atomic_unchecked_t cachefiles_mkdir_histogram[HZ];
+extern atomic_unchecked_t cachefiles_create_histogram[HZ];
 
 extern int __init cachefiles_proc_init(void);
 extern void cachefiles_proc_cleanup(void);
 static inline
-void cachefiles_hist(atomic_t histogram[], unsigned long start_jif)
+void cachefiles_hist(atomic_unchecked_t histogram[], unsigned long start_jif)
 {
 	unsigned long jif = jiffies - start_jif;
 	if (jif >= HZ)
 		jif = HZ - 1;
-	atomic_inc(&histogram[jif]);
+	atomic_inc_unchecked(&histogram[jif]);
 }
 
 #else
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 5bf2b41..85b93f9 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -312,7 +312,7 @@ try_again:
 	/* first step is to make up a grave dentry in the graveyard */
 	sprintf(nbuffer, "%08x%08x",
 		(uint32_t) get_seconds(),
-		(uint32_t) atomic_inc_return(&cache->gravecounter));
+		(uint32_t) atomic_inc_return_unchecked(&cache->gravecounter));
 
 	/* do the multiway lock magic */
 	trap = lock_rename(cache->graveyard, dir);
diff --git a/fs/cachefiles/proc.c b/fs/cachefiles/proc.c
index eccd339..4c1d995 100644
--- a/fs/cachefiles/proc.c
+++ b/fs/cachefiles/proc.c
@@ -14,9 +14,9 @@
 #include <linux/seq_file.h>
 #include "internal.h"
 
-atomic_t cachefiles_lookup_histogram[HZ];
-atomic_t cachefiles_mkdir_histogram[HZ];
-atomic_t cachefiles_create_histogram[HZ];
+atomic_unchecked_t cachefiles_lookup_histogram[HZ];
+atomic_unchecked_t cachefiles_mkdir_histogram[HZ];
+atomic_unchecked_t cachefiles_create_histogram[HZ];
 
 /*
  * display the latency histogram
@@ -35,9 +35,9 @@ static int cachefiles_histogram_show(struct seq_file *m, void *v)
 		return 0;
 	default:
 		index = (unsigned long) v - 3;
-		x = atomic_read(&cachefiles_lookup_histogram[index]);
-		y = atomic_read(&cachefiles_mkdir_histogram[index]);
-		z = atomic_read(&cachefiles_create_histogram[index]);
+		x = atomic_read_unchecked(&cachefiles_lookup_histogram[index]);
+		y = atomic_read_unchecked(&cachefiles_mkdir_histogram[index]);
+		z = atomic_read_unchecked(&cachefiles_create_histogram[index]);
 		if (x == 0 && y == 0 && z == 0)
 			return 0;
 
diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
index 4b1fb5c..0d2a699 100644
--- a/fs/cachefiles/rdwr.c
+++ b/fs/cachefiles/rdwr.c
@@ -943,7 +943,7 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
 			old_fs = get_fs();
 			set_fs(KERNEL_DS);
 			ret = file->f_op->write(
-				file, (const void __user *) data, len, &pos);
+				file, (const void __force_user *) data, len, &pos);
 			set_fs(old_fs);
 			kunmap(page);
 			file_end_write(file);
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index c29d6ae..719b9bb 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -129,6 +129,8 @@ static int __dcache_readdir(struct file *file,  struct dir_context *ctx,
 	struct dentry *dentry, *last;
 	struct ceph_dentry_info *di;
 	int err = 0;
+	char d_name[DNAME_INLINE_LEN];
+	const unsigned char *name;
 
 	/* claim ref on last dentry we returned */
 	last = fi->dentry;
@@ -192,7 +194,12 @@ more:
 
 	dout(" %llu (%llu) dentry %p %.*s %p\n", di->offset, ctx->pos,
 	     dentry, dentry->d_name.len, dentry->d_name.name, dentry->d_inode);
-	if (!dir_emit(ctx, dentry->d_name.name,
+	name = dentry->d_name.name;
+	if (name == dentry->d_iname) {
+		memcpy(d_name, name, dentry->d_name.len);
+		name = d_name;
+	}
+	if (!dir_emit(ctx, name,
 		      dentry->d_name.len,
 		      ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
 		      dentry->d_inode->i_mode >> 12)) {
@@ -250,7 +257,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
 	struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
 	struct ceph_mds_client *mdsc = fsc->mdsc;
 	unsigned frag = fpos_frag(ctx->pos);
-	int off = fpos_off(ctx->pos);
+	unsigned int off = fpos_off(ctx->pos);
 	int err;
 	u32 ftype;
 	struct ceph_mds_reply_info_parsed *rinfo;
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 06150fd..192061b 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -895,7 +895,7 @@ static int ceph_compare_super(struct super_block *sb, void *data)
 /*
  * construct our own bdi so we can control readahead, etc.
  */
-static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
+static atomic_long_unchecked_t bdi_seq = ATOMIC_LONG_INIT(0);
 
 static int ceph_register_bdi(struct super_block *sb,
 			     struct ceph_fs_client *fsc)
@@ -912,7 +912,7 @@ static int ceph_register_bdi(struct super_block *sb,
 			default_backing_dev_info.ra_pages;
 
 	err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%ld",
-			   atomic_long_inc_return(&bdi_seq));
+			   atomic_long_inc_return_unchecked(&bdi_seq));
 	if (!err)
 		sb->s_bdi = &fsc->backing_dev_info;
 	return err;
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index f3ac415..3d2420c 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -286,8 +286,8 @@ static ssize_t cifs_stats_proc_write(struct file *file,
 
 	if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
 #ifdef CONFIG_CIFS_STATS2
-		atomic_set(&totBufAllocCount, 0);
-		atomic_set(&totSmBufAllocCount, 0);
+		atomic_set_unchecked(&totBufAllocCount, 0);
+		atomic_set_unchecked(&totSmBufAllocCount, 0);
 #endif /* CONFIG_CIFS_STATS2 */
 		spin_lock(&cifs_tcp_ses_lock);
 		list_for_each(tmp1, &cifs_tcp_ses_list) {
@@ -300,7 +300,7 @@ static ssize_t cifs_stats_proc_write(struct file *file,
 					tcon = list_entry(tmp3,
 							  struct cifs_tcon,
 							  tcon_list);
-					atomic_set(&tcon->num_smbs_sent, 0);
+					atomic_set_unchecked(&tcon->num_smbs_sent, 0);
 					if (server->ops->clear_stats)
 						server->ops->clear_stats(tcon);
 				}
@@ -332,8 +332,8 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
 			smBufAllocCount.counter, cifs_min_small);
 #ifdef CONFIG_CIFS_STATS2
 	seq_printf(m, "Total Large %d Small %d Allocations\n",
-				atomic_read(&totBufAllocCount),
-				atomic_read(&totSmBufAllocCount));
+				atomic_read_unchecked(&totBufAllocCount),
+				atomic_read_unchecked(&totSmBufAllocCount));
 #endif /* CONFIG_CIFS_STATS2 */
 
 	seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
@@ -362,7 +362,7 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
 				if (tcon->need_reconnect)
 					seq_puts(m, "\tDISCONNECTED ");
 				seq_printf(m, "\nSMBs: %d",
-					   atomic_read(&tcon->num_smbs_sent));
+					   atomic_read_unchecked(&tcon->num_smbs_sent));
 				if (server->ops->print_stats)
 					server->ops->print_stats(m, tcon);
 			}
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 8883980..c8ade72 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -1072,7 +1072,7 @@ cifs_init_request_bufs(void)
 */
 	cifs_req_cachep = kmem_cache_create("cifs_request",
 					    CIFSMaxBufSize + max_hdr_size, 0,
-					    SLAB_HWCACHE_ALIGN, NULL);
+					    SLAB_HWCACHE_ALIGN | SLAB_USERCOPY, NULL);
 	if (cifs_req_cachep == NULL)
 		return -ENOMEM;
 
@@ -1099,7 +1099,7 @@ cifs_init_request_bufs(void)
 	efficient to alloc 1 per page off the slab compared to 17K (5page)
 	alloc of large cifs buffers even when page debugging is on */
 	cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq",
-			MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
+			MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN | SLAB_USERCOPY,
 			NULL);
 	if (cifs_sm_req_cachep == NULL) {
 		mempool_destroy(cifs_req_poolp);
@@ -1184,8 +1184,8 @@ init_cifs(void)
 	atomic_set(&bufAllocCount, 0);
 	atomic_set(&smBufAllocCount, 0);
 #ifdef CONFIG_CIFS_STATS2
-	atomic_set(&totBufAllocCount, 0);
-	atomic_set(&totSmBufAllocCount, 0);
+	atomic_set_unchecked(&totBufAllocCount, 0);
+	atomic_set_unchecked(&totSmBufAllocCount, 0);
 #endif /* CONFIG_CIFS_STATS2 */
 
 	atomic_set(&midCount, 0);
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index c97fd86..e4a8274 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -804,35 +804,35 @@ struct cifs_tcon {
 	__u16 Flags;		/* optional support bits */
 	enum statusEnum tidStatus;
 #ifdef CONFIG_CIFS_STATS
-	atomic_t num_smbs_sent;
+	atomic_unchecked_t num_smbs_sent;
 	union {
 		struct {
-			atomic_t num_writes;
-			atomic_t num_reads;
-			atomic_t num_flushes;
-			atomic_t num_oplock_brks;
-			atomic_t num_opens;
-			atomic_t num_closes;
-			atomic_t num_deletes;
-			atomic_t num_mkdirs;
-			atomic_t num_posixopens;
-			atomic_t num_posixmkdirs;
-			atomic_t num_rmdirs;
-			atomic_t num_renames;
-			atomic_t num_t2renames;
-			atomic_t num_ffirst;
-			atomic_t num_fnext;
-			atomic_t num_fclose;
-			atomic_t num_hardlinks;
-			atomic_t num_symlinks;
-			atomic_t num_locks;
-			atomic_t num_acl_get;
-			atomic_t num_acl_set;
+			atomic_unchecked_t num_writes;
+			atomic_unchecked_t num_reads;
+			atomic_unchecked_t num_flushes;
+			atomic_unchecked_t num_oplock_brks;
+			atomic_unchecked_t num_opens;
+			atomic_unchecked_t num_closes;
+			atomic_unchecked_t num_deletes;
+			atomic_unchecked_t num_mkdirs;
+			atomic_unchecked_t num_posixopens;
+			atomic_unchecked_t num_posixmkdirs;
+			atomic_unchecked_t num_rmdirs;
+			atomic_unchecked_t num_renames;
+			atomic_unchecked_t num_t2renames;
+			atomic_unchecked_t num_ffirst;
+			atomic_unchecked_t num_fnext;
+			atomic_unchecked_t num_fclose;
+			atomic_unchecked_t num_hardlinks;
+			atomic_unchecked_t num_symlinks;
+			atomic_unchecked_t num_locks;
+			atomic_unchecked_t num_acl_get;
+			atomic_unchecked_t num_acl_set;
 		} cifs_stats;
 #ifdef CONFIG_CIFS_SMB2
 		struct {
-			atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
-			atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
+			atomic_unchecked_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
+			atomic_unchecked_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
 		} smb2_stats;
 #endif /* CONFIG_CIFS_SMB2 */
 	} stats;
@@ -1169,7 +1169,7 @@ convert_delimiter(char *path, char delim)
 }
 
 #ifdef CONFIG_CIFS_STATS
-#define cifs_stats_inc atomic_inc
+#define cifs_stats_inc atomic_inc_unchecked
 
 static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
 					    unsigned int bytes)
@@ -1535,8 +1535,8 @@ GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
 /* Various Debug counters */
 GLOBAL_EXTERN atomic_t bufAllocCount;    /* current number allocated  */
 #ifdef CONFIG_CIFS_STATS2
-GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
-GLOBAL_EXTERN atomic_t totSmBufAllocCount;
+GLOBAL_EXTERN atomic_unchecked_t totBufAllocCount; /* total allocated over all time */
+GLOBAL_EXTERN atomic_unchecked_t totSmBufAllocCount;
 #endif
 GLOBAL_EXTERN atomic_t smBufAllocCount;
 GLOBAL_EXTERN atomic_t midCount;
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 9de08c9..b396124 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1900,10 +1900,14 @@ static int cifs_writepages(struct address_space *mapping,
 		index = mapping->writeback_index; /* Start from prev offset */
 		end = -1;
 	} else {
-		index = wbc->range_start >> PAGE_CACHE_SHIFT;
-		end = wbc->range_end >> PAGE_CACHE_SHIFT;
-		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
+		if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) {
 			range_whole = true;
+			index = 0;
+			end = ULONG_MAX;
+		} else {
+			index = wbc->range_start >> PAGE_CACHE_SHIFT;
+			end = wbc->range_end >> PAGE_CACHE_SHIFT;
+		}
 		scanned = true;
 	}
 retry:
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index 3b0c62e..f7d090c 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -170,7 +170,7 @@ cifs_buf_get(void)
 		memset(ret_buf, 0, buf_size + 3);
 		atomic_inc(&bufAllocCount);
 #ifdef CONFIG_CIFS_STATS2
-		atomic_inc(&totBufAllocCount);
+		atomic_inc_unchecked(&totBufAllocCount);
 #endif /* CONFIG_CIFS_STATS2 */
 	}
 
@@ -205,7 +205,7 @@ cifs_small_buf_get(void)
 	/*	memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/
 		atomic_inc(&smBufAllocCount);
 #ifdef CONFIG_CIFS_STATS2
-		atomic_inc(&totSmBufAllocCount);
+		atomic_inc_unchecked(&totSmBufAllocCount);
 #endif /* CONFIG_CIFS_STATS2 */
 
 	}
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index 84ca0a4..add8cba 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -626,27 +626,27 @@ static void
 cifs_clear_stats(struct cifs_tcon *tcon)
 {
 #ifdef CONFIG_CIFS_STATS
-	atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
-	atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_writes, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_reads, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_flushes, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_oplock_brks, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_opens, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_posixopens, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_closes, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_deletes, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_mkdirs, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_rmdirs, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_renames, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_t2renames, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_ffirst, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_fnext, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_fclose, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_hardlinks, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_symlinks, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_locks, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_acl_get, 0);
+	atomic_set_unchecked(&tcon->stats.cifs_stats.num_acl_set, 0);
 #endif
 }
 
@@ -655,36 +655,36 @@ cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 {
 #ifdef CONFIG_CIFS_STATS
 	seq_printf(m, " Oplocks breaks: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_oplock_brks));
 	seq_printf(m, "\nReads:  %d Bytes: %llu",
-		   atomic_read(&tcon->stats.cifs_stats.num_reads),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_reads),
 		   (long long)(tcon->bytes_read));
 	seq_printf(m, "\nWrites: %d Bytes: %llu",
-		   atomic_read(&tcon->stats.cifs_stats.num_writes),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_writes),
 		   (long long)(tcon->bytes_written));
 	seq_printf(m, "\nFlushes: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_flushes));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_flushes));
 	seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_locks),
-		   atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
-		   atomic_read(&tcon->stats.cifs_stats.num_symlinks));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_locks),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_hardlinks),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_symlinks));
 	seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_opens),
-		   atomic_read(&tcon->stats.cifs_stats.num_closes),
-		   atomic_read(&tcon->stats.cifs_stats.num_deletes));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_opens),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_closes),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_deletes));
 	seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_posixopens),
-		   atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_posixopens),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_posixmkdirs));
 	seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
-		   atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_mkdirs),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_rmdirs));
 	seq_printf(m, "\nRenames: %d T2 Renames %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_renames),
-		   atomic_read(&tcon->stats.cifs_stats.num_t2renames));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_renames),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_t2renames));
 	seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
-		   atomic_read(&tcon->stats.cifs_stats.num_ffirst),
-		   atomic_read(&tcon->stats.cifs_stats.num_fnext),
-		   atomic_read(&tcon->stats.cifs_stats.num_fclose));
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_ffirst),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_fnext),
+		   atomic_read_unchecked(&tcon->stats.cifs_stats.num_fclose));
 #endif
 }
 
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index f325c59..6bba517 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -364,8 +364,8 @@ smb2_clear_stats(struct cifs_tcon *tcon)
 #ifdef CONFIG_CIFS_STATS
 	int i;
 	for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
-		atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
-		atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
+		atomic_set_unchecked(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
+		atomic_set_unchecked(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
 	}
 #endif
 }
@@ -405,65 +405,65 @@ static void
 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
 {
 #ifdef CONFIG_CIFS_STATS
-	atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
-	atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
+	atomic_unchecked_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
+	atomic_unchecked_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
 	seq_printf(m, "\nNegotiates: %d sent %d failed",
-		   atomic_read(&sent[SMB2_NEGOTIATE_HE]),
-		   atomic_read(&failed[SMB2_NEGOTIATE_HE]));
+		   atomic_read_unchecked(&sent[SMB2_NEGOTIATE_HE]),
+		   atomic_read_unchecked(&failed[SMB2_NEGOTIATE_HE]));
 	seq_printf(m, "\nSessionSetups: %d sent %d failed",
-		   atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
-		   atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
+		   atomic_read_unchecked(&sent[SMB2_SESSION_SETUP_HE]),
+		   atomic_read_unchecked(&failed[SMB2_SESSION_SETUP_HE]));
 	seq_printf(m, "\nLogoffs: %d sent %d failed",
-		   atomic_read(&sent[SMB2_LOGOFF_HE]),
-		   atomic_read(&failed[SMB2_LOGOFF_HE]));
+		   atomic_read_unchecked(&sent[SMB2_LOGOFF_HE]),
+		   atomic_read_unchecked(&failed[SMB2_LOGOFF_HE]));
 	seq_printf(m, "\nTreeConnects: %d sent %d failed",
-		   atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
-		   atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
+		   atomic_read_unchecked(&sent[SMB2_TREE_CONNECT_HE]),
+		   atomic_read_unchecked(&failed[SMB2_TREE_CONNECT_HE]));
 	seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
-		   atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
-		   atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
+		   atomic_read_unchecked(&sent[SMB2_TREE_DISCONNECT_HE]),
+		   atomic_read_unchecked(&failed[SMB2_TREE_DISCONNECT_HE]));
 	seq_printf(m, "\nCreates: %d sent %d failed",
-		   atomic_read(&sent[SMB2_CREATE_HE]),
-		   atomic_read(&failed[SMB2_CREATE_HE]));
+		   atomic_read_unchecked(&sent[SMB2_CREATE_HE]),
+		   atomic_read_unchecked(&failed[SMB2_CREATE_HE]));
 	seq_printf(m, "\nCloses: %d sent %d failed",
-		   atomic_read(&sent[SMB2_CLOSE_HE]),
-		   atomic_read(&failed[SMB2_CLOSE_HE]));
+		   atomic_read_unchecked(&sent[SMB2_CLOSE_HE]),
+		   atomic_read_unchecked(&failed[SMB2_CLOSE_HE]));
 	seq_printf(m, "\nFlushes: %d sent %d failed",
-		   atomic_read(&sent[SMB2_FLUSH_HE]),
-		   atomic_read(&failed[SMB2_FLUSH_HE]));
+		   atomic_read_unchecked(&sent[SMB2_FLUSH_HE]),
+		   atomic_read_unchecked(&failed[SMB2_FLUSH_HE]));
 	seq_printf(m, "\nReads: %d sent %d failed",
-		   atomic_read(&sent[SMB2_READ_HE]),
-		   atomic_read(&failed[SMB2_READ_HE]));
+		   atomic_read_unchecked(&sent[SMB2_READ_HE]),
+		   atomic_read_unchecked(&failed[SMB2_READ_HE]));
 	seq_printf(m, "\nWrites: %d sent %d failed",
-		   atomic_read(&sent[SMB2_WRITE_HE]),
-		   atomic_read(&failed[SMB2_WRITE_HE]));
+		   atomic_read_unchecked(&sent[SMB2_WRITE_HE]),
+		   atomic_read_unchecked(&failed[SMB2_WRITE_HE]));
 	seq_printf(m, "\nLocks: %d sent %d failed",
-		   atomic_read(&sent[SMB2_LOCK_HE]),
-		   atomic_read(&failed[SMB2_LOCK_HE]));
+		   atomic_read_unchecked(&sent[SMB2_LOCK_HE]),
+		   atomic_read_unchecked(&failed[SMB2_LOCK_HE]));
 	seq_printf(m, "\nIOCTLs: %d sent %d failed",
-		   atomic_read(&sent[SMB2_IOCTL_HE]),
-		   atomic_read(&failed[SMB2_IOCTL_HE]));
+		   atomic_read_unchecked(&sent[SMB2_IOCTL_HE]),
+		   atomic_read_unchecked(&failed[SMB2_IOCTL_HE]));
 	seq_printf(m, "\nCancels: %d sent %d failed",
-		   atomic_read(&sent[SMB2_CANCEL_HE]),
-		   atomic_read(&failed[SMB2_CANCEL_HE]));
+		   atomic_read_unchecked(&sent[SMB2_CANCEL_HE]),
+		   atomic_read_unchecked(&failed[SMB2_CANCEL_HE]));
 	seq_printf(m, "\nEchos: %d sent %d failed",
-		   atomic_read(&sent[SMB2_ECHO_HE]),
-		   atomic_read(&failed[SMB2_ECHO_HE]));
+		   atomic_read_unchecked(&sent[SMB2_ECHO_HE]),
+		   atomic_read_unchecked(&failed[SMB2_ECHO_HE]));
 	seq_printf(m, "\nQueryDirectories: %d sent %d failed",
-		   atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
-		   atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
+		   atomic_read_unchecked(&sent[SMB2_QUERY_DIRECTORY_HE]),
+		   atomic_read_unchecked(&failed[SMB2_QUERY_DIRECTORY_HE]));
 	seq_printf(m, "\nChangeNotifies: %d sent %d failed",
-		   atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
-		   atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
+		   atomic_read_unchecked(&sent[SMB2_CHANGE_NOTIFY_HE]),
+		   atomic_read_unchecked(&failed[SMB2_CHANGE_NOTIFY_HE]));
 	seq_printf(m, "\nQueryInfos: %d sent %d failed",
-		   atomic_read(&sent[SMB2_QUERY_INFO_HE]),
-		   atomic_read(&failed[SMB2_QUERY_INFO_HE]));
+		   atomic_read_unchecked(&sent[SMB2_QUERY_INFO_HE]),
+		   atomic_read_unchecked(&failed[SMB2_QUERY_INFO_HE]));
 	seq_printf(m, "\nSetInfos: %d sent %d failed",
-		   atomic_read(&sent[SMB2_SET_INFO_HE]),
-		   atomic_read(&failed[SMB2_SET_INFO_HE]));
+		   atomic_read_unchecked(&sent[SMB2_SET_INFO_HE]),
+		   atomic_read_unchecked(&failed[SMB2_SET_INFO_HE]));
 	seq_printf(m, "\nOplockBreaks: %d sent %d failed",
-		   atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
-		   atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
+		   atomic_read_unchecked(&sent[SMB2_OPLOCK_BREAK_HE]),
+		   atomic_read_unchecked(&failed[SMB2_OPLOCK_BREAK_HE]));
 #endif
 }
 
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 8707755..8f38739 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2106,8 +2106,7 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
 	default:
 		cifs_dbg(VFS, "info level %u isn't supported\n",
 			 srch_inf->info_level);
-		rc = -EINVAL;
-		goto qdir_exit;
+		return -EINVAL;
 	}
 
 	req->FileIndex = cpu_to_le32(index);
diff --git a/fs/coda/cache.c b/fs/coda/cache.c
index 1da168c..8bc7ff6 100644
--- a/fs/coda/cache.c
+++ b/fs/coda/cache.c
@@ -24,7 +24,7 @@
 #include "coda_linux.h"
 #include "coda_cache.h"
 
-static atomic_t permission_epoch = ATOMIC_INIT(0);
+static atomic_unchecked_t permission_epoch = ATOMIC_INIT(0);
 
 /* replace or extend an acl cache hit */
 void coda_cache_enter(struct inode *inode, int mask)
@@ -32,7 +32,7 @@ void coda_cache_enter(struct inode *inode, int mask)
 	struct coda_inode_info *cii = ITOC(inode);
 
 	spin_lock(&cii->c_lock);
-	cii->c_cached_epoch = atomic_read(&permission_epoch);
+	cii->c_cached_epoch = atomic_read_unchecked(&permission_epoch);
 	if (!uid_eq(cii->c_uid, current_fsuid())) {
 		cii->c_uid = current_fsuid();
                 cii->c_cached_perm = mask;
@@ -46,14 +46,14 @@ void coda_cache_clear_inode(struct inode *inode)
 {
 	struct coda_inode_info *cii = ITOC(inode);
 	spin_lock(&cii->c_lock);
-	cii->c_cached_epoch = atomic_read(&permission_epoch) - 1;
+	cii->c_cached_epoch = atomic_read_unchecked(&permission_epoch) - 1;
 	spin_unlock(&cii->c_lock);
 }
 
 /* remove all acl caches */
 void coda_cache_clear_all(struct super_block *sb)
 {
-	atomic_inc(&permission_epoch);
+	atomic_inc_unchecked(&permission_epoch);
 }
 
 
@@ -66,7 +66,7 @@ int coda_cache_check(struct inode *inode, int mask)
 	spin_lock(&cii->c_lock);
 	hit = (mask & cii->c_cached_perm) == mask &&
 	    uid_eq(cii->c_uid, current_fsuid()) &&
-	    cii->c_cached_epoch == atomic_read(&permission_epoch);
+	    cii->c_cached_epoch == atomic_read_unchecked(&permission_epoch);
 	spin_unlock(&cii->c_lock);
 
 	return hit;
diff --git a/fs/compat.c b/fs/compat.c
index 66d3d3c..9c10175 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -54,7 +54,7 @@
 #include <asm/ioctls.h>
 #include "internal.h"
 
-int compat_log = 1;
+int compat_log = 0;
 
 int compat_printk(const char *fmt, ...)
 {
@@ -512,7 +512,7 @@ COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_reqs, u32 __user *, ctx32p)
 
 	set_fs(KERNEL_DS);
 	/* The __user pointer cast is valid because of the set_fs() */
-	ret = sys_io_setup(nr_reqs, (aio_context_t __user *) &ctx64);
+	ret = sys_io_setup(nr_reqs, (aio_context_t __force_user *) &ctx64);
 	set_fs(oldfs);
 	/* truncating is ok because it's a user address */
 	if (!ret)
@@ -562,7 +562,7 @@ ssize_t compat_rw_copy_check_uvector(int type,
 		goto out;
 
 	ret = -EINVAL;
-	if (nr_segs > UIO_MAXIOV || nr_segs < 0)
+	if (nr_segs > UIO_MAXIOV)
 		goto out;
 	if (nr_segs > fast_segs) {
 		ret = -ENOMEM;
@@ -850,6 +850,7 @@ struct compat_old_linux_dirent {
 struct compat_readdir_callback {
 	struct dir_context ctx;
 	struct compat_old_linux_dirent __user *dirent;
+	struct file * file;
 	int result;
 };
 
@@ -867,6 +868,10 @@ static int compat_fillonedir(void *__buf, const char *name, int namlen,
 		buf->result = -EOVERFLOW;
 		return -EOVERFLOW;
 	}
+
+	if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
+		return 0;
+
 	buf->result++;
 	dirent = buf->dirent;
 	if (!access_ok(VERIFY_WRITE, dirent,
@@ -898,6 +903,7 @@ COMPAT_SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
 	if (!f.file)
 		return -EBADF;
 
+	buf.file = f.file;
 	error = iterate_dir(f.file, &buf.ctx);
 	if (buf.result)
 		error = buf.result;
@@ -917,6 +923,7 @@ struct compat_getdents_callback {
 	struct dir_context ctx;
 	struct compat_linux_dirent __user *current_dir;
 	struct compat_linux_dirent __user *previous;
+	struct file * file;
 	int count;
 	int error;
 };
@@ -938,6 +945,10 @@ static int compat_filldir(void *__buf, const char *name, int namlen,
 		buf->error = -EOVERFLOW;
 		return -EOVERFLOW;
 	}
+
+	if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
+		return 0;
+
 	dirent = buf->previous;
 	if (dirent) {
 		if (__put_user(offset, &dirent->d_off))
@@ -983,6 +994,7 @@ COMPAT_SYSCALL_DEFINE3(getdents, unsigned int, fd,
 	if (!f.file)
 		return -EBADF;
 
+	buf.file = f.file;
 	error = iterate_dir(f.file, &buf.ctx);
 	if (error >= 0)
 		error = buf.error;
@@ -1003,6 +1015,7 @@ struct compat_getdents_callback64 {
 	struct dir_context ctx;
 	struct linux_dirent64 __user *current_dir;
 	struct linux_dirent64 __user *previous;
+	struct file * file;
 	int count;
 	int error;
 };
@@ -1019,6 +1032,10 @@ static int compat_filldir64(void * __buf, const char * name, int namlen, loff_t
 	buf->error = -EINVAL;	/* only used if we fail.. */
 	if (reclen > buf->count)
 		return -EINVAL;
+
+	if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
+		return 0;
+
 	dirent = buf->previous;
 
 	if (dirent) {
@@ -1068,6 +1085,7 @@ COMPAT_SYSCALL_DEFINE3(getdents64, unsigned int, fd,
 	if (!f.file)
 		return -EBADF;
 
+	buf.file = f.file;
 	error = iterate_dir(f.file, &buf.ctx);
 	if (error >= 0)
 		error = buf.error;
diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c
index 4d24d17..4f8c09e 100644
--- a/fs/compat_binfmt_elf.c
+++ b/fs/compat_binfmt_elf.c
@@ -30,11 +30,13 @@
 #undef	elf_phdr
 #undef	elf_shdr
 #undef	elf_note
+#undef	elf_dyn
 #undef	elf_addr_t
 #define elfhdr		elf32_hdr
 #define elf_phdr	elf32_phdr
 #define elf_shdr	elf32_shdr
 #define elf_note	elf32_note
+#define elf_dyn		Elf32_Dyn
 #define elf_addr_t	Elf32_Addr
 
 /*
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index e822890..fed89d9 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -621,7 +621,7 @@ static int serial_struct_ioctl(unsigned fd, unsigned cmd,
 			return -EFAULT;
                 if (__get_user(udata, &ss32->iomem_base))
 			return -EFAULT;
-                ss.iomem_base = compat_ptr(udata);
+                ss.iomem_base = (unsigned char __force_kernel *)compat_ptr(udata);
                 if (__get_user(ss.iomem_reg_shift, &ss32->iomem_reg_shift) ||
 		    __get_user(ss.port_high, &ss32->port_high))
 			return -EFAULT;
@@ -703,8 +703,8 @@ static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd,
 	for (i = 0; i < nmsgs; i++) {
 		if (copy_in_user(&tmsgs[i].addr, &umsgs[i].addr, 3*sizeof(u16)))
 			return -EFAULT;
-		if (get_user(datap, &umsgs[i].buf) ||
-		    put_user(compat_ptr(datap), &tmsgs[i].buf))
+		if (get_user(datap, (compat_caddr_t __user *)&umsgs[i].buf) ||
+		    put_user(compat_ptr(datap), (u8 __user * __user *)&tmsgs[i].buf))
 			return -EFAULT;
 	}
 	return sys_ioctl(fd, cmd, (unsigned long)tdata);
@@ -797,7 +797,7 @@ static int compat_ioctl_preallocate(struct file *file,
 	    copy_in_user(&p->l_len,	&p32->l_len,	sizeof(s64)) ||
 	    copy_in_user(&p->l_sysid,	&p32->l_sysid,	sizeof(s32)) ||
 	    copy_in_user(&p->l_pid,	&p32->l_pid,	sizeof(u32)) ||
-	    copy_in_user(&p->l_pad,	&p32->l_pad,	4*sizeof(u32)))
+	    copy_in_user(p->l_pad,	p32->l_pad,	4*sizeof(u32)))
 		return -EFAULT;
 
 	return ioctl_preallocate(file, p);
@@ -1618,8 +1618,8 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
 static int __init init_sys32_ioctl_cmp(const void *p, const void *q)
 {
 	unsigned int a, b;
-	a = *(unsigned int *)p;
-	b = *(unsigned int *)q;
+	a = *(const unsigned int *)p;
+	b = *(const unsigned int *)q;
 	if (a > b)
 		return 1;
 	if (a < b)
diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
index 668dcab..daebcd6 100644
--- a/fs/configfs/dir.c
+++ b/fs/configfs/dir.c
@@ -1548,7 +1548,8 @@ static int configfs_readdir(struct file *file, struct dir_context *ctx)
 	}
 	for (p = q->next; p != &parent_sd->s_children; p = p->next) {
 		struct configfs_dirent *next;
-		const char *name;
+		const unsigned char * name;
+		char d_name[sizeof(next->s_dentry->d_iname)];
 		int len;
 		struct inode *inode = NULL;
 
@@ -1557,7 +1558,12 @@ static int configfs_readdir(struct file *file, struct dir_context *ctx)
 			continue;
 
 		name = configfs_get_name(next);
-		len = strlen(name);
+		if (next->s_dentry && name == next->s_dentry->d_iname) {
+			len =  next->s_dentry->d_name.len;
+			memcpy(d_name, name, len);
+			name = d_name;
+		} else
+			len = strlen(name);
 
 		/*
 		 * We'll have a dentry and an inode for
diff --git a/fs/coredump.c b/fs/coredump.c
index a93f7e6..d58bcbe 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -442,8 +442,8 @@ static void wait_for_dump_helpers(struct file *file)
 	struct pipe_inode_info *pipe = file->private_data;
 
 	pipe_lock(pipe);
-	pipe->readers++;
-	pipe->writers--;
+	atomic_inc(&pipe->readers);
+	atomic_dec(&pipe->writers);
 	wake_up_interruptible_sync(&pipe->wait);
 	kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
 	pipe_unlock(pipe);
@@ -452,11 +452,11 @@ static void wait_for_dump_helpers(struct file *file)
 	 * We actually want wait_event_freezable() but then we need
 	 * to clear TIF_SIGPENDING and improve dump_interrupted().
 	 */
-	wait_event_interruptible(pipe->wait, pipe->readers == 1);
+	wait_event_interruptible(pipe->wait, atomic_read(&pipe->readers) == 1);
 
 	pipe_lock(pipe);
-	pipe->readers--;
-	pipe->writers++;
+	atomic_dec(&pipe->readers);
+	atomic_inc(&pipe->writers);
 	pipe_unlock(pipe);
 }
 
@@ -503,7 +503,9 @@ void do_coredump(const siginfo_t *siginfo)
 	struct files_struct *displaced;
 	bool need_nonrelative = false;
 	bool core_dumped = false;
-	static atomic_t core_dump_count = ATOMIC_INIT(0);
+	static atomic_unchecked_t core_dump_count = ATOMIC_INIT(0);
+	long signr = siginfo->si_signo;
+	int dumpable;
 	struct coredump_params cprm = {
 		.siginfo = siginfo,
 		.regs = signal_pt_regs(),
@@ -516,12 +518,17 @@ void do_coredump(const siginfo_t *siginfo)
 		.mm_flags = mm->flags,
 	};
 
-	audit_core_dumps(siginfo->si_signo);
+	audit_core_dumps(signr);
+
+	dumpable = __get_dumpable(cprm.mm_flags);
+
+	if (signr == SIGSEGV || signr == SIGBUS || signr == SIGKILL || signr == SIGILL)
+		gr_handle_brute_attach(dumpable);
 
 	binfmt = mm->binfmt;
 	if (!binfmt || !binfmt->core_dump)
 		goto fail;
-	if (!__get_dumpable(cprm.mm_flags))
+	if (!dumpable)
 		goto fail;
 
 	cred = prepare_creds();
@@ -540,7 +547,7 @@ void do_coredump(const siginfo_t *siginfo)
 		need_nonrelative = true;
 	}
 
-	retval = coredump_wait(siginfo->si_signo, &core_state);
+	retval = coredump_wait(signr, &core_state);
 	if (retval < 0)
 		goto fail_creds;
 
@@ -583,7 +590,7 @@ void do_coredump(const siginfo_t *siginfo)
 		}
 		cprm.limit = RLIM_INFINITY;
 
-		dump_count = atomic_inc_return(&core_dump_count);
+		dump_count = atomic_inc_return_unchecked(&core_dump_count);
 		if (core_pipe_limit && (core_pipe_limit < dump_count)) {
 			printk(KERN_WARNING "Pid %d(%s) over core_pipe_limit\n",
 			       task_tgid_vnr(current), current->comm);
@@ -615,6 +622,8 @@ void do_coredump(const siginfo_t *siginfo)
 	} else {
 		struct inode *inode;
 
+		gr_learn_resource(current, RLIMIT_CORE, binfmt->min_coredump, 1);
+
 		if (cprm.limit < binfmt->min_coredump)
 			goto fail_unlock;
 
@@ -673,7 +682,7 @@ close_fail:
 		filp_close(cprm.file, NULL);
 fail_dropcount:
 	if (ispipe)
-		atomic_dec(&core_dump_count);
+		atomic_dec_unchecked(&core_dump_count);
 fail_unlock:
 	kfree(cn.corename);
 	coredump_finish(mm, core_dumped);
@@ -694,6 +703,8 @@ int dump_emit(struct coredump_params *cprm, const void *addr, int nr)
 	struct file *file = cprm->file;
 	loff_t pos = file->f_pos;
 	ssize_t n;
+
+	gr_learn_resource(current, RLIMIT_CORE, cprm->written + nr, 1);
 	if (cprm->written + nr > cprm->limit)
 		return 0;
 	while (nr) {
diff --git a/fs/dcache.c b/fs/dcache.c
index e1308c5..c9c5b6c 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -478,7 +478,7 @@ static void __dentry_kill(struct dentry *dentry)
 	 * dentry_iput drops the locks, at which point nobody (except
 	 * transient RCU lookups) can reach this dentry.
 	 */
-	BUG_ON((int)dentry->d_lockref.count > 0);
+	BUG_ON((int)__lockref_read(&dentry->d_lockref) > 0);
 	this_cpu_dec(nr_dentry);
 	if (dentry->d_op && dentry->d_op->d_release)
 		dentry->d_op->d_release(dentry);
@@ -531,7 +531,7 @@ static inline struct dentry *lock_parent(struct dentry *dentry)
 	struct dentry *parent = dentry->d_parent;
 	if (IS_ROOT(dentry))
 		return NULL;
-	if (unlikely((int)dentry->d_lockref.count < 0))
+	if (unlikely((int)__lockref_read(&dentry->d_lockref) < 0))
 		return NULL;
 	if (likely(spin_trylock(&parent->d_lock)))
 		return parent;
@@ -608,7 +608,7 @@ repeat:
 		dentry->d_flags |= DCACHE_REFERENCED;
 	dentry_lru_add(dentry);
 
-	dentry->d_lockref.count--;
+	__lockref_dec(&dentry->d_lockref);
 	spin_unlock(&dentry->d_lock);
 	return;
 
@@ -663,7 +663,7 @@ int d_invalidate(struct dentry * dentry)
 	 * We also need to leave mountpoints alone,
 	 * directory or not.
 	 */
-	if (dentry->d_lockref.count > 1 && dentry->d_inode) {
+	if (__lockref_read(&dentry->d_lockref) > 1 && dentry->d_inode) {
 		if (S_ISDIR(dentry->d_inode->i_mode) || d_mountpoint(dentry)) {
 			spin_unlock(&dentry->d_lock);
 			return -EBUSY;
@@ -679,7 +679,7 @@ EXPORT_SYMBOL(d_invalidate);
 /* This must be called with d_lock held */
 static inline void __dget_dlock(struct dentry *dentry)
 {
-	dentry->d_lockref.count++;
+	__lockref_inc(&dentry->d_lockref);
 }
 
 static inline void __dget(struct dentry *dentry)
@@ -720,8 +720,8 @@ repeat:
 		goto repeat;
 	}
 	rcu_read_unlock();
-	BUG_ON(!ret->d_lockref.count);
-	ret->d_lockref.count++;
+	BUG_ON(!__lockref_read(&ret->d_lockref));
+	__lockref_inc(&ret->d_lockref);
 	spin_unlock(&ret->d_lock);
 	return ret;
 }
@@ -804,7 +804,7 @@ restart:
 	spin_lock(&inode->i_lock);
 	hlist_for_each_entry(dentry, &inode->i_dentry, d_alias) {
 		spin_lock(&dentry->d_lock);
-		if (!dentry->d_lockref.count) {
+		if (!__lockref_read(&dentry->d_lockref)) {
 			/*
 			 * inform the fs via d_prune that this dentry
 			 * is about to be unhashed and destroyed.
@@ -847,7 +847,7 @@ static void shrink_dentry_list(struct list_head *list)
 		 * We found an inuse dentry which was not removed from
 		 * the LRU because of laziness during lookup. Do not free it.
 		 */
-		if ((int)dentry->d_lockref.count > 0) {
+		if ((int)__lockref_read(&dentry->d_lockref) > 0) {
 			spin_unlock(&dentry->d_lock);
 			if (parent)
 				spin_unlock(&parent->d_lock);
@@ -885,8 +885,8 @@ static void shrink_dentry_list(struct list_head *list)
 		dentry = parent;
 		while (dentry && !lockref_put_or_lock(&dentry->d_lockref)) {
 			parent = lock_parent(dentry);
-			if (dentry->d_lockref.count != 1) {
-				dentry->d_lockref.count--;
+			if (__lockref_read(&dentry->d_lockref) != 1) {
+				__lockref_inc(&dentry->d_lockref);
 				spin_unlock(&dentry->d_lock);
 				if (parent)
 					spin_unlock(&parent->d_lock);
@@ -926,7 +926,7 @@ dentry_lru_isolate(struct list_head *item, spinlock_t *lru_lock, void *arg)
 	 * counts, just remove them from the LRU. Otherwise give them
 	 * another pass through the LRU.
 	 */
-	if (dentry->d_lockref.count) {
+	if (__lockref_read(&dentry->d_lockref) > 0) {
 		d_lru_isolate(dentry);
 		spin_unlock(&dentry->d_lock);
 		return LRU_REMOVED;
@@ -1261,7 +1261,7 @@ static enum d_walk_ret select_collect(void *_data, struct dentry *dentry)
 	} else {
 		if (dentry->d_flags & DCACHE_LRU_LIST)
 			d_lru_del(dentry);
-		if (!dentry->d_lockref.count) {
+		if (!__lockref_read(&dentry->d_lockref)) {
 			d_shrink_add(dentry, &data->dispose);
 			data->found++;
 		}
@@ -1309,7 +1309,7 @@ static enum d_walk_ret umount_check(void *_data, struct dentry *dentry)
 		return D_WALK_CONTINUE;
 
 	/* root with refcount 1 is fine */
-	if (dentry == _data && dentry->d_lockref.count == 1)
+	if (dentry == _data && __lockref_read(&dentry->d_lockref) == 1)
 		return D_WALK_CONTINUE;
 
 	printk(KERN_ERR "BUG: Dentry %p{i=%lx,n=%pd} "
@@ -1318,7 +1318,7 @@ static enum d_walk_ret umount_check(void *_data, struct dentry *dentry)
 		       dentry->d_inode ?
 		       dentry->d_inode->i_ino : 0UL,
 		       dentry,
-		       dentry->d_lockref.count,
+		       __lockref_read(&dentry->d_lockref),
 		       dentry->d_sb->s_type->name,
 		       dentry->d_sb->s_id);
 	WARN_ON(1);
@@ -1444,7 +1444,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
 	 */
 	dentry->d_iname[DNAME_INLINE_LEN-1] = 0;
 	if (name->len > DNAME_INLINE_LEN-1) {
-		dname = kmalloc(name->len + 1, GFP_KERNEL);
+		dname = kmalloc(round_up(name->len + 1, sizeof(unsigned long)), GFP_KERNEL);
 		if (!dname) {
 			kmem_cache_free(dentry_cache, dentry); 
 			return NULL;
@@ -1462,7 +1462,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
 	smp_wmb();
 	dentry->d_name.name = dname;
 
-	dentry->d_lockref.count = 1;
+	__lockref_set(&dentry->d_lockref, 1);
 	dentry->d_flags = 0;
 	spin_lock_init(&dentry->d_lock);
 	seqcount_init(&dentry->d_seq);
@@ -2225,7 +2225,7 @@ struct dentry *__d_lookup(const struct dentry *parent, const struct qstr *name)
 				goto next;
 		}
 
-		dentry->d_lockref.count++;
+		__lockref_inc(&dentry->d_lockref);
 		found = dentry;
 		spin_unlock(&dentry->d_lock);
 		break;
@@ -2324,7 +2324,7 @@ again:
 	spin_lock(&dentry->d_lock);
 	inode = dentry->d_inode;
 	isdir = S_ISDIR(inode->i_mode);
-	if (dentry->d_lockref.count == 1) {
+	if (__lockref_read(&dentry->d_lockref) == 1) {
 		if (!spin_trylock(&inode->i_lock)) {
 			spin_unlock(&dentry->d_lock);
 			cpu_relax();
@@ -2401,7 +2401,7 @@ void dentry_update_name_case(struct dentry *dentry, struct qstr *name)
 }
 EXPORT_SYMBOL(dentry_update_name_case);
 
-static void switch_names(struct dentry *dentry, struct dentry *target)
+static void switch_names(struct dentry *dentry, struct dentry *target, bool exchange)
 {
 	if (dname_external(target)) {
 		if (dname_external(dentry)) {
@@ -2429,7 +2429,7 @@ static void switch_names(struct dentry *dentry, struct dentry *target)
 					target->d_name.len + 1);
 			target->d_name.name = dentry->d_name.name;
 			dentry->d_name.name = dentry->d_iname;
-		} else {
+		} else if (exchange) {
 			/*
 			 * Both are internal.
 			 */
@@ -2439,6 +2439,14 @@ static void switch_names(struct dentry *dentry, struct dentry *target)
 				swap(((long *) &dentry->d_iname)[i],
 				     ((long *) &target->d_iname)[i]);
 			}
+		} else {
+			/*
+			 * Both are internal.  Just copy target to dentry
+			 */
+			memcpy(dentry->d_iname, target->d_name.name,
+				target->d_name.len + 1);
+			dentry->d_name.len = target->d_name.len;
+			return;
 		}
 	}
 	swap(dentry->d_name.len, target->d_name.len);
@@ -2539,7 +2547,7 @@ static void __d_move(struct dentry *dentry, struct dentry *target,
 	list_del(&target->d_u.d_child);
 
 	/* Switch the names.. */
-	switch_names(dentry, target);
+	switch_names(dentry, target, exchange);
 	swap(dentry->d_name.hash, target->d_name.hash);
 
 	/* ... and switch the parents */
@@ -2678,7 +2686,7 @@ static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon)
 
 	dparent = dentry->d_parent;
 
-	switch_names(dentry, anon);
+	switch_names(dentry, anon, false);
 	swap(dentry->d_name.hash, anon->d_name.hash);
 
 	dentry->d_parent = dentry;
@@ -3296,7 +3304,7 @@ static enum d_walk_ret d_genocide_kill(void *data, struct dentry *dentry)
 
 		if (!(dentry->d_flags & DCACHE_GENOCIDE)) {
 			dentry->d_flags |= DCACHE_GENOCIDE;
-			dentry->d_lockref.count--;
+			__lockref_dec(&dentry->d_lockref);
 		}
 	}
 	return D_WALK_CONTINUE;
@@ -3412,7 +3420,8 @@ void __init vfs_caches_init(unsigned long mempages)
 	mempages -= reserve;
 
 	names_cachep = kmem_cache_create("names_cache", PATH_MAX, 0,
-			SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+			SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_USERCOPY|
+			SLAB_NO_SANITIZE, NULL);
 
 	dcache_init();
 	inode_init();
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 16a46b6..41696fd 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -416,7 +416,11 @@ EXPORT_SYMBOL_GPL(debugfs_create_file);
  */
 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)
 {
+#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT
+	return __create_file(name, S_IFDIR | S_IRWXU,
+#else
 	return __create_file(name, S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
+#endif
 				   parent, NULL, NULL);
 }
 EXPORT_SYMBOL_GPL(debugfs_create_dir);
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index d4a9431..77f9b2e 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -673,7 +673,7 @@ static char *ecryptfs_readlink_lower(struct dentry *dentry, size_t *bufsiz)
 	old_fs = get_fs();
 	set_fs(get_ds());
 	rc = lower_dentry->d_inode->i_op->readlink(lower_dentry,
-						   (char __user *)lower_buf,
+						   (char __force_user *)lower_buf,
 						   PATH_MAX);
 	set_fs(old_fs);
 	if (rc < 0)
diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
index e4141f2..d8263e8 100644
--- a/fs/ecryptfs/miscdev.c
+++ b/fs/ecryptfs/miscdev.c
@@ -304,7 +304,7 @@ check_list:
 		goto out_unlock_msg_ctx;
 	i = PKT_TYPE_SIZE + PKT_CTR_SIZE;
 	if (msg_ctx->msg) {
-		if (copy_to_user(&buf[i], packet_length, packet_length_size))
+		if (packet_length_size > sizeof(packet_length) || copy_to_user(&buf[i], packet_length, packet_length_size))
 			goto out_unlock_msg_ctx;
 		i += packet_length_size;
 		if (copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size))
diff --git a/fs/exec.c b/fs/exec.c
index a3d33fe..49e9bc9 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -56,8 +56,20 @@
 #include <linux/pipe_fs_i.h>
 #include <linux/oom.h>
 #include <linux/compat.h>
+#include <linux/random.h>
+#include <linux/seq_file.h>
+#include <linux/coredump.h>
+#include <linux/mman.h>
+
+#ifdef CONFIG_PAX_REFCOUNT
+#include <linux/kallsyms.h>
+#include <linux/kdebug.h>
+#endif
+
+#include <trace/events/fs.h>
 
 #include <asm/uaccess.h>
+#include <asm/sections.h>
 #include <asm/mmu_context.h>
 #include <asm/tlb.h>
 
@@ -66,19 +78,34 @@
 
 #include <trace/events/sched.h>
 
+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
+void __weak pax_set_initial_flags(struct linux_binprm *bprm)
+{
+	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");
+}
+#endif
+
+#ifdef CONFIG_PAX_HOOK_ACL_FLAGS
+void (*pax_set_initial_flags_func)(struct linux_binprm *bprm);
+EXPORT_SYMBOL(pax_set_initial_flags_func);
+#endif
+
 int suid_dumpable = 0;
 
 static LIST_HEAD(formats);
 static DEFINE_RWLOCK(binfmt_lock);
 
+extern int gr_process_kernel_exec_ban(void);
+extern int gr_process_suid_exec_ban(const struct linux_binprm *bprm);
+
 void __register_binfmt(struct linux_binfmt * fmt, int insert)
 {
 	BUG_ON(!fmt);
 	if (WARN_ON(!fmt->load_binary))
 		return;
 	write_lock(&binfmt_lock);
-	insert ? list_add(&fmt->lh, &formats) :
-		 list_add_tail(&fmt->lh, &formats);
+	insert ? pax_list_add((struct list_head *)&fmt->lh, &formats) :
+		 pax_list_add_tail((struct list_head *)&fmt->lh, &formats);
 	write_unlock(&binfmt_lock);
 }
 
@@ -87,7 +114,7 @@ EXPORT_SYMBOL(__register_binfmt);
 void unregister_binfmt(struct linux_binfmt * fmt)
 {
 	write_lock(&binfmt_lock);
-	list_del(&fmt->lh);
+	pax_list_del((struct list_head *)&fmt->lh);
 	write_unlock(&binfmt_lock);
 }
 
@@ -183,18 +210,10 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
 		int write)
 {
 	struct page *page;
-	int ret;
 
-#ifdef CONFIG_STACK_GROWSUP
-	if (write) {
-		ret = expand_downwards(bprm->vma, pos);
-		if (ret < 0)
-			return NULL;
-	}
-#endif
-	ret = get_user_pages(current, bprm->mm, pos,
-			1, write, 1, &page, NULL);
-	if (ret <= 0)
+	if (0 > expand_downwards(bprm->vma, pos))
+		return NULL;
+	if (0 >= get_user_pages(current, bprm->mm, pos, 1, write, 1, &page, NULL))
 		return NULL;
 
 	if (write) {
@@ -210,6 +229,17 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
 		if (size <= ARG_MAX)
 			return page;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+		// only allow 512KB for argv+env on suid/sgid binaries
+		// to prevent easy ASLR exhaustion
+		if (((!uid_eq(bprm->cred->euid, current_euid())) ||
+		     (!gid_eq(bprm->cred->egid, current_egid()))) &&
+		    (size > (512 * 1024))) {
+			put_page(page);
+			return NULL;
+		}
+#endif
+
 		/*
 		 * Limit to 1/4-th the stack size for the argv+env strings.
 		 * This ensures that:
@@ -269,6 +299,11 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
 	vma->vm_end = STACK_TOP_MAX;
 	vma->vm_start = vma->vm_end - PAGE_SIZE;
 	vma->vm_flags = VM_SOFTDIRTY | VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	vma->vm_flags &= ~(VM_EXEC | VM_MAYEXEC);
+#endif
+
 	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 	INIT_LIST_HEAD(&vma->anon_vma_chain);
 
@@ -279,6 +314,12 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
 	mm->stack_vm = mm->total_vm = 1;
 	up_write(&mm->mmap_sem);
 	bprm->p = vma->vm_end - sizeof(void *);
+
+#ifdef CONFIG_PAX_RANDUSTACK
+	if (randomize_va_space)
+		bprm->p ^= prandom_u32() & ~PAGE_MASK;
+#endif
+
 	return 0;
 err:
 	up_write(&mm->mmap_sem);
@@ -399,7 +440,7 @@ struct user_arg_ptr {
 	} ptr;
 };
 
-static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
+const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
 {
 	const char __user *native;
 
@@ -408,14 +449,14 @@ static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
 		compat_uptr_t compat;
 
 		if (get_user(compat, argv.ptr.compat + nr))
-			return ERR_PTR(-EFAULT);
+			return (const char __force_user *)ERR_PTR(-EFAULT);
 
 		return compat_ptr(compat);
 	}
 #endif
 
 	if (get_user(native, argv.ptr.native + nr))
-		return ERR_PTR(-EFAULT);
+		return (const char __force_user *)ERR_PTR(-EFAULT);
 
 	return native;
 }
@@ -434,7 +475,7 @@ static int count(struct user_arg_ptr argv, int max)
 			if (!p)
 				break;
 
-			if (IS_ERR(p))
+			if (IS_ERR((const char __force_kernel *)p))
 				return -EFAULT;
 
 			if (i >= max)
@@ -469,7 +510,7 @@ static int copy_strings(int argc, struct user_arg_ptr argv,
 
 		ret = -EFAULT;
 		str = get_user_arg_ptr(argv, argc);
-		if (IS_ERR(str))
+		if (IS_ERR((const char __force_kernel *)str))
 			goto out;
 
 		len = strnlen_user(str, MAX_ARG_STRLEN);
@@ -551,7 +592,7 @@ int copy_strings_kernel(int argc, const char *const *__argv,
 	int r;
 	mm_segment_t oldfs = get_fs();
 	struct user_arg_ptr argv = {
-		.ptr.native = (const char __user *const  __user *)__argv,
+		.ptr.native = (const char __user * const __force_user *)__argv,
 	};
 
 	set_fs(KERNEL_DS);
@@ -586,7 +627,8 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
 	unsigned long new_end = old_end - shift;
 	struct mmu_gather tlb;
 
-	BUG_ON(new_start > new_end);
+	if (new_start >= new_end || new_start < mmap_min_addr)
+		return -ENOMEM;
 
 	/*
 	 * ensure there are no vmas between where we want to go
@@ -595,6 +637,10 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
 	if (vma != find_vma(mm, new_start))
 		return -EFAULT;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	BUG_ON(pax_find_mirror_vma(vma));
+#endif
+
 	/*
 	 * cover the whole range: [new_start, old_end)
 	 */
@@ -675,10 +721,6 @@ int setup_arg_pages(struct linux_binprm *bprm,
 	stack_top = arch_align_stack(stack_top);
 	stack_top = PAGE_ALIGN(stack_top);
 
-	if (unlikely(stack_top < mmap_min_addr) ||
-	    unlikely(vma->vm_end - vma->vm_start >= stack_top - mmap_min_addr))
-		return -ENOMEM;
-
 	stack_shift = vma->vm_end - stack_top;
 
 	bprm->p -= stack_shift;
@@ -690,8 +732,28 @@ int setup_arg_pages(struct linux_binprm *bprm,
 	bprm->exec -= stack_shift;
 
 	down_write(&mm->mmap_sem);
+
+	/* Move stack pages down in memory. */
+	if (stack_shift) {
+		ret = shift_arg_pages(vma, stack_shift);
+		if (ret)
+			goto out_unlock;
+	}
+
 	vm_flags = VM_STACK_FLAGS;
 
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+	if (mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
+		vm_flags &= ~VM_EXEC;
+
+#ifdef CONFIG_PAX_MPROTECT
+		if (mm->pax_flags & MF_PAX_MPROTECT)
+			vm_flags &= ~VM_MAYEXEC;
+#endif
+
+	}
+#endif
+
 	/*
 	 * Adjust stack execute permissions; explicitly enable for
 	 * EXSTACK_ENABLE_X, disable for EXSTACK_DISABLE_X and leave alone
@@ -710,13 +772,6 @@ int setup_arg_pages(struct linux_binprm *bprm,
 		goto out_unlock;
 	BUG_ON(prev != vma);
 
-	/* Move stack pages down in memory. */
-	if (stack_shift) {
-		ret = shift_arg_pages(vma, stack_shift);
-		if (ret)
-			goto out_unlock;
-	}
-
 	/* mprotect_fixup is overkill to remove the temporary stack flags */
 	vma->vm_flags &= ~VM_STACK_INCOMPLETE_SETUP;
 
@@ -740,6 +795,27 @@ int setup_arg_pages(struct linux_binprm *bprm,
 #endif
 	current->mm->start_stack = bprm->p;
 	ret = expand_stack(vma, stack_base);
+
+#if !defined(CONFIG_STACK_GROWSUP) && defined(CONFIG_PAX_RANDMMAP)
+	if (!ret && (mm->pax_flags & MF_PAX_RANDMMAP) && STACK_TOP <= 0xFFFFFFFFU && STACK_TOP > vma->vm_end) {
+		unsigned long size;
+		vm_flags_t vm_flags;
+
+		size = STACK_TOP - vma->vm_end;
+		vm_flags = VM_NONE | VM_DONTEXPAND | VM_DONTDUMP;
+
+		ret = vma->vm_end != mmap_region(NULL, vma->vm_end, size, vm_flags, 0);
+
+#ifdef CONFIG_X86
+		if (!ret) {
+			size = PAGE_SIZE + mmap_min_addr + ((mm->delta_mmap ^ mm->delta_stack) & (0xFFUL << PAGE_SHIFT));
+			ret = 0 != mmap_region(NULL, 0, PAGE_ALIGN(size), vm_flags, 0);
+		}
+#endif
+
+	}
+#endif
+
 	if (ret)
 		ret = -EFAULT;
 
@@ -775,6 +851,8 @@ static struct file *do_open_exec(struct filename *name)
 
 	fsnotify_open(file);
 
+	trace_open_exec(name->name);
+
 	err = deny_write_access(file);
 	if (err)
 		goto exit;
@@ -804,7 +882,7 @@ int kernel_read(struct file *file, loff_t offset,
 	old_fs = get_fs();
 	set_fs(get_ds());
 	/* The cast to a user pointer is valid due to the set_fs() */
-	result = vfs_read(file, (void __user *)addr, count, &pos);
+	result = vfs_read(file, (void __force_user *)addr, count, &pos);
 	set_fs(old_fs);
 	return result;
 }
@@ -849,6 +927,7 @@ static int exec_mmap(struct mm_struct *mm)
 	tsk->mm = mm;
 	tsk->active_mm = mm;
 	activate_mm(active_mm, mm);
+	populate_stack();
 	tsk->mm->vmacache_seqnum = 0;
 	vmacache_flush(tsk);
 	task_unlock(tsk);
@@ -1247,7 +1326,7 @@ static void check_unsafe_exec(struct linux_binprm *bprm)
 	}
 	rcu_read_unlock();
 
-	if (p->fs->users > n_fs)
+	if (atomic_read(&p->fs->users) > n_fs)
 		bprm->unsafe |= LSM_UNSAFE_SHARE;
 	else
 		p->fs->in_exec = 1;
@@ -1423,6 +1502,31 @@ static int exec_binprm(struct linux_binprm *bprm)
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+static DEFINE_PER_CPU(u64, exec_counter);
+static int __init init_exec_counters(void)
+{
+	unsigned int cpu;
+
+	for_each_possible_cpu(cpu) {
+		per_cpu(exec_counter, cpu) = (u64)cpu;
+	}
+
+	return 0;
+}
+early_initcall(init_exec_counters);
+static inline void increment_exec_counter(void)
+{
+	BUILD_BUG_ON(NR_CPUS > (1 << 16));
+	current->exec_id = this_cpu_add_return(exec_counter, 1 << 16);
+}
+#else
+static inline void increment_exec_counter(void) {}
+#endif
+
+extern void gr_handle_exec_args(struct linux_binprm *bprm,
+				struct user_arg_ptr argv);
+
 /*
  * sys_execve() executes a new program.
  */
@@ -1430,6 +1534,11 @@ static int do_execve_common(struct filename *filename,
 				struct user_arg_ptr argv,
 				struct user_arg_ptr envp)
 {
+#ifdef CONFIG_GRKERNSEC
+	struct file *old_exec_file;
+	struct acl_subject_label *old_acl;
+	struct rlimit old_rlim[RLIM_NLIMITS];
+#endif
 	struct linux_binprm *bprm;
 	struct file *file;
 	struct files_struct *displaced;
@@ -1438,6 +1547,8 @@ static int do_execve_common(struct filename *filename,
 	if (IS_ERR(filename))
 		return PTR_ERR(filename);
 
+	gr_learn_resource(current, RLIMIT_NPROC, atomic_read(&current_user()->processes), 1);
+
 	/*
 	 * We move the actual failure in case of RLIMIT_NPROC excess from
 	 * set*uid() to execve() because too many poorly written programs
@@ -1475,11 +1586,21 @@ static int do_execve_common(struct filename *filename,
 	if (IS_ERR(file))
 		goto out_unmark;
 
+	if (gr_ptrace_readexec(file, bprm->unsafe)) {
+		retval = -EPERM;
+		goto out_unmark;
+	}
+
 	sched_exec();
 
 	bprm->file = file;
 	bprm->filename = bprm->interp = filename->name;
 
+	if (!gr_acl_handle_execve(file->f_path.dentry, file->f_path.mnt)) {
+		retval = -EACCES;
+		goto out_unmark;
+	}
+
 	retval = bprm_mm_init(bprm);
 	if (retval)
 		goto out_unmark;
@@ -1496,24 +1617,70 @@ static int do_execve_common(struct filename *filename,
 	if (retval < 0)
 		goto out;
 
+#ifdef CONFIG_GRKERNSEC
+	old_acl = current->acl;
+	memcpy(old_rlim, current->signal->rlim, sizeof(old_rlim));
+	old_exec_file = current->exec_file;
+	get_file(file);
+	current->exec_file = file;
+#endif
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	/* limit suid stack to 8MB
+	 * we saved the old limits above and will restore them if this exec fails
+	 */
+	if (((!uid_eq(bprm->cred->euid, current_euid())) || (!gid_eq(bprm->cred->egid, current_egid()))) &&
+	    (old_rlim[RLIMIT_STACK].rlim_cur > (8 * 1024 * 1024)))
+		current->signal->rlim[RLIMIT_STACK].rlim_cur = 8 * 1024 * 1024;
+#endif
+
+	if (gr_process_kernel_exec_ban() || gr_process_suid_exec_ban(bprm)) {
+		retval = -EPERM;
+		goto out_fail;
+	}
+
+	if (!gr_tpe_allow(file)) {
+		retval = -EACCES;
+		goto out_fail;
+	}
+
+	if (gr_check_crash_exec(file)) {
+		retval = -EACCES;
+		goto out_fail;
+	}
+
+	retval = gr_set_proc_label(file->f_path.dentry, file->f_path.mnt,
+					bprm->unsafe);
+	if (retval < 0)
+		goto out_fail;
+
 	retval = copy_strings_kernel(1, &bprm->filename, bprm);
 	if (retval < 0)
-		goto out;
+		goto out_fail;
 
 	bprm->exec = bprm->p;
 	retval = copy_strings(bprm->envc, envp, bprm);
 	if (retval < 0)
-		goto out;
+		goto out_fail;
 
 	retval = copy_strings(bprm->argc, argv, bprm);
 	if (retval < 0)
-		goto out;
+		goto out_fail;
+
+	gr_log_chroot_exec(file->f_path.dentry, file->f_path.mnt);
+
+	gr_handle_exec_args(bprm, argv);
 
 	retval = exec_binprm(bprm);
 	if (retval < 0)
-		goto out;
+		goto out_fail;
+#ifdef CONFIG_GRKERNSEC
+	if (old_exec_file)
+		fput(old_exec_file);
+#endif
 
 	/* execve succeeded */
+
+	increment_exec_counter();
 	current->fs->in_exec = 0;
 	current->in_execve = 0;
 	acct_update_integrals(current);
@@ -1524,6 +1691,14 @@ static int do_execve_common(struct filename *filename,
 		put_files_struct(displaced);
 	return retval;
 
+out_fail:
+#ifdef CONFIG_GRKERNSEC
+	current->acl = old_acl;
+	memcpy(current->signal->rlim, old_rlim, sizeof(old_rlim));
+	fput(current->exec_file);
+	current->exec_file = old_exec_file;
+#endif
+
 out:
 	if (bprm->mm) {
 		acct_arg_size(bprm, 0);
@@ -1615,3 +1790,312 @@ COMPAT_SYSCALL_DEFINE3(execve, const char __user *, filename,
 	return compat_do_execve(getname(filename), argv, envp);
 }
 #endif
+
+int pax_check_flags(unsigned long *flags)
+{
+	int retval = 0;
+
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_SEGMEXEC)
+	if (*flags & MF_PAX_SEGMEXEC)
+	{
+		*flags &= ~MF_PAX_SEGMEXEC;
+	retval = -EINVAL;
+	}
+#endif
+
+	if ((*flags & MF_PAX_PAGEEXEC)
+
+#ifdef CONFIG_PAX_PAGEEXEC
+	    &&  (*flags & MF_PAX_SEGMEXEC)
+#endif
+
+	   )
+	{
+		*flags &= ~MF_PAX_PAGEEXEC;
+		retval = -EINVAL;
+	}
+
+	if ((*flags & MF_PAX_MPROTECT)
+
+#ifdef CONFIG_PAX_MPROTECT
+	    && !(*flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC))
+#endif
+
+	   )
+	{
+		*flags &= ~MF_PAX_MPROTECT;
+	retval = -EINVAL;
+	}
+
+	if ((*flags & MF_PAX_EMUTRAMP)
+
+#ifdef CONFIG_PAX_EMUTRAMP
+	    && !(*flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC))
+#endif
+
+	   )
+	{
+		*flags &= ~MF_PAX_EMUTRAMP;
+		retval = -EINVAL;
+	}
+
+	return retval;
+}
+
+EXPORT_SYMBOL(pax_check_flags);
+
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+char *pax_get_path(const struct path *path, char *buf, int buflen)
+{
+	char *pathname = d_path(path, buf, buflen);
+
+	if (IS_ERR(pathname))
+		goto toolong;
+
+	pathname = mangle_path(buf, pathname, "\t\n\\");
+	if (!pathname)
+		goto toolong;
+
+	*pathname = 0;
+	return buf;
+
+toolong:
+	return "<path too long>";
+}
+EXPORT_SYMBOL(pax_get_path);
+
+void pax_report_fault(struct pt_regs *regs, void *pc, void *sp)
+{
+	struct task_struct *tsk = current;
+	struct mm_struct *mm = current->mm;
+	char *buffer_exec = (char *)__get_free_page(GFP_KERNEL);
+	char *buffer_fault = (char *)__get_free_page(GFP_KERNEL);
+	char *path_exec = NULL;
+	char *path_fault = NULL;
+	unsigned long start = 0UL, end = 0UL, offset = 0UL;
+	siginfo_t info = { };
+
+	if (buffer_exec && buffer_fault) {
+		struct vm_area_struct *vma, *vma_exec = NULL, *vma_fault = NULL;
+
+		down_read(&mm->mmap_sem);
+		vma = mm->mmap;
+		while (vma && (!vma_exec || !vma_fault)) {
+			if (vma->vm_file && mm->exe_file == vma->vm_file && (vma->vm_flags & VM_EXEC))
+				vma_exec = vma;
+			if (vma->vm_start <= (unsigned long)pc && (unsigned long)pc < vma->vm_end)
+				vma_fault = vma;
+			vma = vma->vm_next;
+		}
+		if (vma_exec)
+			path_exec = pax_get_path(&vma_exec->vm_file->f_path, buffer_exec, PAGE_SIZE);
+		if (vma_fault) {
+			start = vma_fault->vm_start;
+			end = vma_fault->vm_end;
+			offset = vma_fault->vm_pgoff << PAGE_SHIFT;
+			if (vma_fault->vm_file)
+				path_fault = pax_get_path(&vma_fault->vm_file->f_path, buffer_fault, PAGE_SIZE);
+			else if ((unsigned long)pc >= mm->start_brk && (unsigned long)pc < mm->brk)
+				path_fault = "<heap>";
+			else if (vma_fault->vm_flags & (VM_GROWSDOWN | VM_GROWSUP))
+				path_fault = "<stack>";
+			else
+				path_fault = "<anonymous mapping>";
+		}
+		up_read(&mm->mmap_sem);
+	}
+	if (tsk->signal->curr_ip)
+		printk(KERN_ERR "PAX: From %pI4: execution attempt in: %s, %08lx-%08lx %08lx\n", &tsk->signal->curr_ip, path_fault, start, end, offset);
+	else
+		printk(KERN_ERR "PAX: execution attempt in: %s, %08lx-%08lx %08lx\n", path_fault, start, end, offset);
+	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),
+			from_kuid_munged(&init_user_ns, task_uid(tsk)), from_kuid_munged(&init_user_ns, task_euid(tsk)), pc, sp);
+	free_page((unsigned long)buffer_exec);
+	free_page((unsigned long)buffer_fault);
+	pax_report_insns(regs, pc, sp);
+	info.si_signo = SIGKILL;
+	info.si_errno = 0;
+	info.si_code = SI_KERNEL;
+	info.si_pid = 0;
+	info.si_uid = 0;
+	do_coredump(&info);
+}
+#endif
+
+#ifdef CONFIG_PAX_REFCOUNT
+void pax_report_refcount_overflow(struct pt_regs *regs)
+{
+	if (current->signal->curr_ip)
+		printk(KERN_ERR "PAX: From %pI4: refcount overflow detected in: %s:%d, uid/euid: %u/%u\n",
+				&current->signal->curr_ip, current->comm, task_pid_nr(current),
+				from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
+	else
+		printk(KERN_ERR "PAX: refcount overflow detected in: %s:%d, uid/euid: %u/%u\n", current->comm, task_pid_nr(current),
+				from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
+	print_symbol(KERN_ERR "PAX: refcount overflow occured at: %s\n", instruction_pointer(regs));
+	preempt_disable();
+	show_regs(regs);
+	preempt_enable();
+	force_sig_info(SIGKILL, SEND_SIG_FORCED, current);
+}
+#endif
+
+#ifdef CONFIG_PAX_USERCOPY
+/* 0: not at all, 1: fully, 2: fully inside frame, -1: partially (implies an error) */
+static noinline int check_stack_object(const void *obj, unsigned long len)
+{
+	const void * const stack = task_stack_page(current);
+	const void * const stackend = stack + THREAD_SIZE;
+
+#if defined(CONFIG_FRAME_POINTER) && defined(CONFIG_X86)
+	const void *frame = NULL;
+	const void *oldframe;
+#endif
+
+	if (obj + len < obj)
+		return -1;
+
+	if (obj + len <= stack || stackend <= obj)
+		return 0;
+
+	if (obj < stack || stackend < obj + len)
+		return -1;
+
+#if defined(CONFIG_FRAME_POINTER) && defined(CONFIG_X86)
+	oldframe = __builtin_frame_address(1);
+	if (oldframe)
+		frame = __builtin_frame_address(2);
+	/*
+	  low ----------------------------------------------> high
+	  [saved bp][saved ip][args][local vars][saved bp][saved ip]
+			      ^----------------^
+			  allow copies only within here
+	*/
+	while (stack <= frame && frame < stackend) {
+		/* if obj + len extends past the last frame, this
+		   check won't pass and the next frame will be 0,
+		   causing us to bail out and correctly report
+		   the copy as invalid
+		*/
+		if (obj + len <= frame)
+			return obj >= oldframe + 2 * sizeof(void *) ? 2 : -1;
+		oldframe = frame;
+		frame = *(const void * const *)frame;
+	}
+	return -1;
+#else
+	return 1;
+#endif
+}
+
+static __noreturn void pax_report_usercopy(const void *ptr, unsigned long len, bool to_user, const char *type)
+{
+	if (current->signal->curr_ip)
+		printk(KERN_ERR "PAX: From %pI4: kernel memory %s attempt detected %s %p (%s) (%lu bytes)\n",
+			&current->signal->curr_ip, to_user ? "leak" : "overwrite", to_user ? "from" : "to", ptr, type ? : "unknown", len);
+	else
+		printk(KERN_ERR "PAX: kernel memory %s attempt detected %s %p (%s) (%lu bytes)\n",
+			to_user ? "leak" : "overwrite", to_user ? "from" : "to", ptr, type ? : "unknown", len);
+	dump_stack();
+	gr_handle_kernel_exploit();
+	do_group_exit(SIGKILL);
+}
+#endif
+
+#ifdef CONFIG_PAX_USERCOPY
+
+static inline bool check_kernel_text_object(unsigned long low, unsigned long high)
+{
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	unsigned long textlow = ktla_ktva((unsigned long)_stext);
+#ifdef CONFIG_MODULES
+	unsigned long texthigh = (unsigned long)MODULES_EXEC_VADDR;
+#else
+	unsigned long texthigh = ktla_ktva((unsigned long)_etext);
+#endif
+
+#else
+	unsigned long textlow = (unsigned long)_stext;
+	unsigned long texthigh = (unsigned long)_etext;
+
+#ifdef CONFIG_X86_64
+	/* check against linear mapping as well */
+	if (high > (unsigned long)__va(__pa(textlow)) &&
+	    low < (unsigned long)__va(__pa(texthigh)))
+		return true;
+#endif
+
+#endif
+
+	if (high <= textlow || low >= texthigh)
+		return false;
+	else
+		return true;
+}
+#endif
+
+void __check_object_size(const void *ptr, unsigned long n, bool to_user, bool const_size)
+{
+#ifdef CONFIG_PAX_USERCOPY
+	const char *type;
+#endif
+
+#ifndef CONFIG_STACK_GROWSUP
+	unsigned long stackstart = (unsigned long)task_stack_page(current);
+	unsigned long currentsp = (unsigned long)&stackstart;
+	if (unlikely((currentsp < stackstart + 512 ||
+		     currentsp >= stackstart + THREAD_SIZE) && !in_interrupt()))
+		BUG();
+#endif
+
+#ifndef CONFIG_PAX_USERCOPY_DEBUG
+	if (const_size)
+		return;
+#endif
+
+#ifdef CONFIG_PAX_USERCOPY
+	if (!n)
+		return;
+
+	type = check_heap_object(ptr, n);
+	if (!type) {
+		int ret = check_stack_object(ptr, n);
+		if (ret == 1 || ret == 2)
+			return;
+		if (ret == 0) {
+			if (check_kernel_text_object((unsigned long)ptr, (unsigned long)ptr + n))
+				type = "<kernel text>";
+			else
+				return;
+		} else
+			type = "<process stack>";
+	}
+
+	pax_report_usercopy(ptr, n, to_user, type);
+#endif
+
+}
+EXPORT_SYMBOL(__check_object_size);
+
+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
+void pax_track_stack(void)
+{
+	unsigned long sp = (unsigned long)&sp;
+	if (sp < current_thread_info()->lowest_stack &&
+	    sp > (unsigned long)task_stack_page(current))
+		current_thread_info()->lowest_stack = sp;
+	if (unlikely((sp & ~(THREAD_SIZE - 1)) < (THREAD_SIZE/16)))
+		BUG();
+}
+EXPORT_SYMBOL(pax_track_stack);
+#endif
+
+#ifdef CONFIG_PAX_SIZE_OVERFLOW
+void report_size_overflow(const char *file, unsigned int line, const char *func, const char *ssa_name)
+{
+	printk(KERN_ERR "PAX: size overflow detected in function %s %s:%u %s", func, file, line, ssa_name);
+	dump_stack();
+	do_group_exit(SIGKILL);
+}
+EXPORT_SYMBOL(report_size_overflow);
+#endif
diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
index 9f9992b..8b59411 100644
--- a/fs/ext2/balloc.c
+++ b/fs/ext2/balloc.c
@@ -1184,10 +1184,10 @@ static int ext2_has_free_blocks(struct ext2_sb_info *sbi)
 
 	free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
 	root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
-	if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
+	if (free_blocks < root_blocks + 1 &&
 		!uid_eq(sbi->s_resuid, current_fsuid()) &&
 		(gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) ||
-		 !in_group_p (sbi->s_resgid))) {
+		 !in_group_p (sbi->s_resgid)) && !capable_nolog(CAP_SYS_RESOURCE)) {
 		return 0;
 	}
 	return 1;
diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
index 9142614..97484fa 100644
--- a/fs/ext2/xattr.c
+++ b/fs/ext2/xattr.c
@@ -247,7 +247,7 @@ ext2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
 	struct buffer_head *bh = NULL;
 	struct ext2_xattr_entry *entry;
 	char *end;
-	size_t rest = buffer_size;
+	size_t rest = buffer_size, total_size = 0;
 	int error;
 
 	ea_idebug(inode, "buffer=%p, buffer_size=%ld",
@@ -305,9 +305,10 @@ bad_block:	ext2_error(inode->i_sb, "ext2_xattr_list",
 				buffer += size;
 			}
 			rest -= size;
+			total_size += size;
 		}
 	}
-	error = buffer_size - rest;  /* total size */
+	error = total_size;
 
 cleanup:
 	brelse(bh);
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index 158b5d4..2432610 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -1438,10 +1438,10 @@ static int ext3_has_free_blocks(struct ext3_sb_info *sbi, int use_reservation)
 
 	free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
 	root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
-	if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
+	if (free_blocks < root_blocks + 1 &&
 		!use_reservation && !uid_eq(sbi->s_resuid, current_fsuid()) &&
 		(gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) ||
-		 !in_group_p (sbi->s_resgid))) {
+		 !in_group_p (sbi->s_resgid)) && !capable_nolog(CAP_SYS_RESOURCE)) {
 		return 0;
 	}
 	return 1;
diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
index c6874be..f8a6ae8 100644
--- a/fs/ext3/xattr.c
+++ b/fs/ext3/xattr.c
@@ -330,7 +330,7 @@ static int
 ext3_xattr_list_entries(struct dentry *dentry, struct ext3_xattr_entry *entry,
 			char *buffer, size_t buffer_size)
 {
-	size_t rest = buffer_size;
+	size_t rest = buffer_size, total_size = 0;
 
 	for (; !IS_LAST_ENTRY(entry); entry = EXT3_XATTR_NEXT(entry)) {
 		const struct xattr_handler *handler =
@@ -347,9 +347,10 @@ ext3_xattr_list_entries(struct dentry *dentry, struct ext3_xattr_entry *entry,
 				buffer += size;
 			}
 			rest -= size;
+			total_size += size;
 		}
 	}
-	return buffer_size - rest;
+	return total_size;
 }
 
 static int
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index fca3820..e1ea241 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -553,8 +553,8 @@ static int ext4_has_free_clusters(struct ext4_sb_info *sbi,
 	/* Hm, nope.  Are (enough) root reserved clusters available? */
 	if (uid_eq(sbi->s_resuid, current_fsuid()) ||
 	    (!gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) && in_group_p(sbi->s_resgid)) ||
-	    capable(CAP_SYS_RESOURCE) ||
-	    (flags & EXT4_MB_USE_ROOT_BLOCKS)) {
+	    (flags & EXT4_MB_USE_ROOT_BLOCKS) ||
+	    capable_nolog(CAP_SYS_RESOURCE)) {
 
 		if (free_clusters >= (nclusters + dirty_clusters +
 				      resv_clusters))
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 1bbe7c3..6f404a5c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1276,19 +1276,19 @@ struct ext4_sb_info {
 	unsigned long s_mb_last_start;
 
 	/* stats for buddy allocator */
-	atomic_t s_bal_reqs;	/* number of reqs with len > 1 */
-	atomic_t s_bal_success;	/* we found long enough chunks */
-	atomic_t s_bal_allocated;	/* in blocks */
-	atomic_t s_bal_ex_scanned;	/* total extents scanned */
-	atomic_t s_bal_goals;	/* goal hits */
-	atomic_t s_bal_breaks;	/* too long searches */
-	atomic_t s_bal_2orders;	/* 2^order hits */
+	atomic_unchecked_t s_bal_reqs;	/* number of reqs with len > 1 */
+	atomic_unchecked_t s_bal_success;	/* we found long enough chunks */
+	atomic_unchecked_t s_bal_allocated;	/* in blocks */
+	atomic_unchecked_t s_bal_ex_scanned;	/* total extents scanned */
+	atomic_unchecked_t s_bal_goals;	/* goal hits */
+	atomic_unchecked_t s_bal_breaks;	/* too long searches */
+	atomic_unchecked_t s_bal_2orders;	/* 2^order hits */
 	spinlock_t s_bal_lock;
 	unsigned long s_mb_buddies_generated;
 	unsigned long long s_mb_generation_time;
-	atomic_t s_mb_lost_chunks;
-	atomic_t s_mb_preallocated;
-	atomic_t s_mb_discarded;
+	atomic_unchecked_t s_mb_lost_chunks;
+	atomic_unchecked_t s_mb_preallocated;
+	atomic_unchecked_t s_mb_discarded;
 	atomic_t s_lock_busy;
 
 	/* locality groups */
@@ -1826,7 +1826,7 @@ ext4_group_first_block_no(struct super_block *sb, ext4_group_t group_no)
 /*
  * Special error return code only used by dx_probe() and its callers.
  */
-#define ERR_BAD_DX_DIR	-75000
+#define ERR_BAD_DX_DIR	(-(MAX_ERRNO - 1))
 
 /*
  * Timeout and state flag for lazy initialization inode thread.
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index c3e7418..f62cab3 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -1901,7 +1901,7 @@ void ext4_mb_simple_scan_group(struct ext4_allocation_context *ac,
 		BUG_ON(ac->ac_b_ex.fe_len != ac->ac_g_ex.fe_len);
 
 		if (EXT4_SB(sb)->s_mb_stats)
-			atomic_inc(&EXT4_SB(sb)->s_bal_2orders);
+			atomic_inc_unchecked(&EXT4_SB(sb)->s_bal_2orders);
 
 		break;
 	}
@@ -2211,7 +2211,7 @@ repeat:
 			ac->ac_status = AC_STATUS_CONTINUE;
 			ac->ac_flags |= EXT4_MB_HINT_FIRST;
 			cr = 3;
-			atomic_inc(&sbi->s_mb_lost_chunks);
+			atomic_inc_unchecked(&sbi->s_mb_lost_chunks);
 			goto repeat;
 		}
 	}
@@ -2717,25 +2717,25 @@ int ext4_mb_release(struct super_block *sb)
 	if (sbi->s_mb_stats) {
 		ext4_msg(sb, KERN_INFO,
 		       "mballoc: %u blocks %u reqs (%u success)",
-				atomic_read(&sbi->s_bal_allocated),
-				atomic_read(&sbi->s_bal_reqs),
-				atomic_read(&sbi->s_bal_success));
+				atomic_read_unchecked(&sbi->s_bal_allocated),
+				atomic_read_unchecked(&sbi->s_bal_reqs),
+				atomic_read_unchecked(&sbi->s_bal_success));
 		ext4_msg(sb, KERN_INFO,
 		      "mballoc: %u extents scanned, %u goal hits, "
 				"%u 2^N hits, %u breaks, %u lost",
-				atomic_read(&sbi->s_bal_ex_scanned),
-				atomic_read(&sbi->s_bal_goals),
-				atomic_read(&sbi->s_bal_2orders),
-				atomic_read(&sbi->s_bal_breaks),
-				atomic_read(&sbi->s_mb_lost_chunks));
+				atomic_read_unchecked(&sbi->s_bal_ex_scanned),
+				atomic_read_unchecked(&sbi->s_bal_goals),
+				atomic_read_unchecked(&sbi->s_bal_2orders),
+				atomic_read_unchecked(&sbi->s_bal_breaks),
+				atomic_read_unchecked(&sbi->s_mb_lost_chunks));
 		ext4_msg(sb, KERN_INFO,
 		       "mballoc: %lu generated and it took %Lu",
 				sbi->s_mb_buddies_generated,
 				sbi->s_mb_generation_time);
 		ext4_msg(sb, KERN_INFO,
 		       "mballoc: %u preallocated, %u discarded",
-				atomic_read(&sbi->s_mb_preallocated),
-				atomic_read(&sbi->s_mb_discarded));
+				atomic_read_unchecked(&sbi->s_mb_preallocated),
+				atomic_read_unchecked(&sbi->s_mb_discarded));
 	}
 
 	free_percpu(sbi->s_locality_groups);
@@ -3191,16 +3191,16 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac)
 	struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
 
 	if (sbi->s_mb_stats && ac->ac_g_ex.fe_len > 1) {
-		atomic_inc(&sbi->s_bal_reqs);
-		atomic_add(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated);
+		atomic_inc_unchecked(&sbi->s_bal_reqs);
+		atomic_add_unchecked(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated);
 		if (ac->ac_b_ex.fe_len >= ac->ac_o_ex.fe_len)
-			atomic_inc(&sbi->s_bal_success);
-		atomic_add(ac->ac_found, &sbi->s_bal_ex_scanned);
+			atomic_inc_unchecked(&sbi->s_bal_success);
+		atomic_add_unchecked(ac->ac_found, &sbi->s_bal_ex_scanned);
 		if (ac->ac_g_ex.fe_start == ac->ac_b_ex.fe_start &&
 				ac->ac_g_ex.fe_group == ac->ac_b_ex.fe_group)
-			atomic_inc(&sbi->s_bal_goals);
+			atomic_inc_unchecked(&sbi->s_bal_goals);
 		if (ac->ac_found > sbi->s_mb_max_to_scan)
-			atomic_inc(&sbi->s_bal_breaks);
+			atomic_inc_unchecked(&sbi->s_bal_breaks);
 	}
 
 	if (ac->ac_op == EXT4_MB_HISTORY_ALLOC)
@@ -3627,7 +3627,7 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac)
 	trace_ext4_mb_new_inode_pa(ac, pa);
 
 	ext4_mb_use_inode_pa(ac, pa);
-	atomic_add(pa->pa_free, &sbi->s_mb_preallocated);
+	atomic_add_unchecked(pa->pa_free, &sbi->s_mb_preallocated);
 
 	ei = EXT4_I(ac->ac_inode);
 	grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group);
@@ -3687,7 +3687,7 @@ ext4_mb_new_group_pa(struct ext4_allocation_context *ac)
 	trace_ext4_mb_new_group_pa(ac, pa);
 
 	ext4_mb_use_group_pa(ac, pa);
-	atomic_add(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);
+	atomic_add_unchecked(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);
 
 	grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group);
 	lg = ac->ac_lg;
@@ -3776,7 +3776,7 @@ ext4_mb_release_inode_pa(struct ext4_buddy *e4b, struct buffer_head *bitmap_bh,
 		 * from the bitmap and continue.
 		 */
 	}
-	atomic_add(free, &sbi->s_mb_discarded);
+	atomic_add_unchecked(free, &sbi->s_mb_discarded);
 
 	return err;
 }
@@ -3794,7 +3794,7 @@ ext4_mb_release_group_pa(struct ext4_buddy *e4b,
 	ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit);
 	BUG_ON(group != e4b->bd_group && pa->pa_len != 0);
 	mb_free_blocks(pa->pa_inode, e4b, bit, pa->pa_len);
-	atomic_add(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded);
+	atomic_add_unchecked(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded);
 	trace_ext4_mballoc_discard(sb, NULL, group, bit, pa->pa_len);
 
 	return 0;
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 32bce84..112d969 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c
@@ -113,7 +113,7 @@ static int read_mmp_block(struct super_block *sb, struct buffer_head **bh,
 void __dump_mmp_msg(struct super_block *sb, struct mmp_struct *mmp,
 		    const char *function, unsigned int line, const char *msg)
 {
-	__ext4_warning(sb, function, line, msg);
+	__ext4_warning(sb, function, line, "%s", msg);
 	__ext4_warning(sb, function, line,
 		       "MMP failure info: last update time: %llu, last update "
 		       "node: %s, last update device: %s\n",
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 9e6eced..5e127be 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1227,7 +1227,7 @@ static struct buffer_head * ext4_find_entry (struct inode *dir,
 				   buffer */
 	int num = 0;
 	ext4_lblk_t  nblocks;
-	int i, err;
+	int i, err = 0;
 	int namelen;
 
 	*res_dir = NULL;
@@ -1264,7 +1264,11 @@ static struct buffer_head * ext4_find_entry (struct inode *dir,
 		 * return.  Otherwise, fall back to doing a search the
 		 * old fashioned way.
 		 */
-		if (bh || (err != ERR_BAD_DX_DIR))
+		if (err == -ENOENT)
+			return NULL;
+		if (err && err != ERR_BAD_DX_DIR)
+			return ERR_PTR(err);
+		if (bh)
 			return bh;
 		dxtrace(printk(KERN_DEBUG "ext4_find_entry: dx failed, "
 			       "falling back\n"));
@@ -1295,6 +1299,11 @@ restart:
 				}
 				num++;
 				bh = ext4_getblk(NULL, dir, b++, 0, &err);
+				if (unlikely(err)) {
+					if (ra_max == 0)
+						return ERR_PTR(err);
+					break;
+				}
 				bh_use[ra_max] = bh;
 				if (bh)
 					ll_rw_block(READ | REQ_META | REQ_PRIO,
@@ -1417,6 +1426,8 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi
 		return ERR_PTR(-ENAMETOOLONG);
 
 	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
+	if (IS_ERR(bh))
+		return (struct dentry *) bh;
 	inode = NULL;
 	if (bh) {
 		__u32 ino = le32_to_cpu(de->inode);
@@ -1450,6 +1461,8 @@ struct dentry *ext4_get_parent(struct dentry *child)
 	struct buffer_head *bh;
 
 	bh = ext4_find_entry(child->d_inode, &dotdot, &de, NULL);
+	if (IS_ERR(bh))
+		return (struct dentry *) bh;
 	if (!bh)
 		return ERR_PTR(-ENOENT);
 	ino = le32_to_cpu(de->inode);
@@ -2727,6 +2740,8 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
 
 	retval = -ENOENT;
 	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
+	if (IS_ERR(bh))
+		return PTR_ERR(bh);
 	if (!bh)
 		goto end_rmdir;
 
@@ -2794,6 +2809,8 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
 
 	retval = -ENOENT;
 	bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL);
+	if (IS_ERR(bh))
+		return PTR_ERR(bh);
 	if (!bh)
 		goto end_unlink;
 
@@ -3121,6 +3138,8 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir,
 	struct ext4_dir_entry_2 *de;
 
 	bh = ext4_find_entry(dir, d_name, &de, NULL);
+	if (IS_ERR(bh))
+		return PTR_ERR(bh);
 	if (bh) {
 		retval = ext4_delete_entry(handle, dir, de, bh);
 		brelse(bh);
@@ -3205,6 +3224,8 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 		dquot_initialize(new.inode);
 
 	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL);
+	if (IS_ERR(old.bh))
+		return PTR_ERR(old.bh);
 	/*
 	 *  Check for inode number is _not_ due to possible IO errors.
 	 *  We might rmdir the source, keep it as pwd of some process
@@ -3217,6 +3238,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 	new.bh = ext4_find_entry(new.dir, &new.dentry->d_name,
 				 &new.de, &new.inlined);
+	if (IS_ERR(new.bh)) {
+		retval = PTR_ERR(new.bh);
+		new.bh = NULL;
+		goto end_rename;
+	}
 	if (new.bh) {
 		if (!new.inode) {
 			brelse(new.bh);
@@ -3345,6 +3371,8 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 	old.bh = ext4_find_entry(old.dir, &old.dentry->d_name,
 				 &old.de, &old.inlined);
+	if (IS_ERR(old.bh))
+		return PTR_ERR(old.bh);
 	/*
 	 *  Check for inode number is _not_ due to possible IO errors.
 	 *  We might rmdir the source, keep it as pwd of some process
@@ -3357,6 +3385,11 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
 
 	new.bh = ext4_find_entry(new.dir, &new.dentry->d_name,
 				 &new.de, &new.inlined);
+	if (IS_ERR(new.bh)) {
+		retval = PTR_ERR(new.bh);
+		new.bh = NULL;
+		goto end_rename;
+	}
 
 	/* RENAME_EXCHANGE case: old *and* new must both exist */
 	if (!new.bh || le32_to_cpu(new.de->inode) != new.inode->i_ino)
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index bb0e80f..1e43b90 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -575,6 +575,7 @@ handle_bb:
 		bh = bclean(handle, sb, block);
 		if (IS_ERR(bh)) {
 			err = PTR_ERR(bh);
+			bh = NULL;
 			goto out;
 		}
 		overhead = ext4_group_overhead_blocks(sb, group);
@@ -603,6 +604,7 @@ handle_ib:
 		bh = bclean(handle, sb, block);
 		if (IS_ERR(bh)) {
 			err = PTR_ERR(bh);
+			bh = NULL;
 			goto out;
 		}
 
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index beeb5c4..998c28d 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1276,7 +1276,7 @@ static ext4_fsblk_t get_sb_block(void **data)
 }
 
 #define DEFAULT_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
-static char deprecated_msg[] = "Mount option \"%s\" will be removed by %s\n"
+static const char deprecated_msg[] = "Mount option \"%s\" will be removed by %s\n"
 	"Contact linux-ext4@vger.kernel.org if you think we should keep it.\n";
 
 #ifdef CONFIG_QUOTA
@@ -2464,7 +2464,7 @@ struct ext4_attr {
 		int offset;
 		int deprecated_val;
 	} u;
-};
+} __do_const;
 
 static int parse_strtoull(const char *buf,
 		unsigned long long max, unsigned long long *value)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index e738733..9843a6c 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -386,7 +386,7 @@ static int
 ext4_xattr_list_entries(struct dentry *dentry, struct ext4_xattr_entry *entry,
 			char *buffer, size_t buffer_size)
 {
-	size_t rest = buffer_size;
+	size_t rest = buffer_size, total_size = 0;
 
 	for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
 		const struct xattr_handler *handler =
@@ -403,9 +403,10 @@ ext4_xattr_list_entries(struct dentry *dentry, struct ext4_xattr_entry *entry,
 				buffer += size;
 			}
 			rest -= size;
+			total_size += size;
 		}
 	}
-	return buffer_size - rest;
+	return total_size;
 }
 
 static int
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 72c82f6..a18b263 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -106,6 +106,11 @@ int __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
 	if (err)
 		return err;
 
+	if (gr_handle_chroot_fowner(pid, type))
+		return -ENOENT;
+	if (gr_check_protected_task_fowner(pid, type))
+		return -EACCES;
+
 	f_modown(filp, pid, type, force);
 	return 0;
 }
diff --git a/fs/fhandle.c b/fs/fhandle.c
index 999ff5c..ac037c9 100644
--- a/fs/fhandle.c
+++ b/fs/fhandle.c
@@ -8,6 +8,7 @@
 #include <linux/fs_struct.h>
 #include <linux/fsnotify.h>
 #include <linux/personality.h>
+#include <linux/grsecurity.h>
 #include <asm/uaccess.h>
 #include "internal.h"
 #include "mount.h"
@@ -67,8 +68,7 @@ static long do_sys_name_to_handle(struct path *path,
 	} else
 		retval = 0;
 	/* copy the mount id */
-	if (copy_to_user(mnt_id, &real_mount(path->mnt)->mnt_id,
-			 sizeof(*mnt_id)) ||
+	if (put_user(real_mount(path->mnt)->mnt_id, mnt_id) ||
 	    copy_to_user(ufh, handle,
 			 sizeof(struct file_handle) + handle_bytes))
 		retval = -EFAULT;
@@ -175,7 +175,7 @@ static int handle_to_path(int mountdirfd, struct file_handle __user *ufh,
 	 * the directory. Ideally we would like CAP_DAC_SEARCH.
 	 * But we don't have that
 	 */
-	if (!capable(CAP_DAC_READ_SEARCH)) {
+	if (!capable(CAP_DAC_READ_SEARCH) || !gr_chroot_fhandle()) {
 		retval = -EPERM;
 		goto out_err;
 	}
diff --git a/fs/file.c b/fs/file.c
index 66923fe..2849783 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -16,6 +16,7 @@
 #include <linux/slab.h>
 #include <linux/vmalloc.h>
 #include <linux/file.h>
+#include <linux/security.h>
 #include <linux/fdtable.h>
 #include <linux/bitops.h>
 #include <linux/interrupt.h>
@@ -139,7 +140,7 @@ out:
  * Return <0 error code on error; 1 on successful completion.
  * The files->file_lock should be held on entry, and will be held on exit.
  */
-static int expand_fdtable(struct files_struct *files, int nr)
+static int expand_fdtable(struct files_struct *files, unsigned int nr)
 	__releases(files->file_lock)
 	__acquires(files->file_lock)
 {
@@ -184,7 +185,7 @@ static int expand_fdtable(struct files_struct *files, int nr)
  * expanded and execution may have blocked.
  * The files->file_lock should be held on entry, and will be held on exit.
  */
-static int expand_files(struct files_struct *files, int nr)
+static int expand_files(struct files_struct *files, unsigned int nr)
 {
 	struct fdtable *fdt;
 
@@ -799,6 +800,7 @@ int replace_fd(unsigned fd, struct file *file, unsigned flags)
 	if (!file)
 		return __close_fd(files, fd);
 
+	gr_learn_resource(current, RLIMIT_NOFILE, fd, 0);
 	if (fd >= rlimit(RLIMIT_NOFILE))
 		return -EBADF;
 
@@ -825,6 +827,7 @@ SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags)
 	if (unlikely(oldfd == newfd))
 		return -EINVAL;
 
+	gr_learn_resource(current, RLIMIT_NOFILE, newfd, 0);
 	if (newfd >= rlimit(RLIMIT_NOFILE))
 		return -EBADF;
 
@@ -880,6 +883,7 @@ SYSCALL_DEFINE1(dup, unsigned int, fildes)
 int f_dupfd(unsigned int from, struct file *file, unsigned flags)
 {
 	int err;
+	gr_learn_resource(current, RLIMIT_NOFILE, from, 0);
 	if (from >= rlimit(RLIMIT_NOFILE))
 		return -EINVAL;
 	err = alloc_fd(from, flags);
diff --git a/fs/filesystems.c b/fs/filesystems.c
index 5797d45..7d7d79a 100644
--- a/fs/filesystems.c
+++ b/fs/filesystems.c
@@ -275,7 +275,11 @@ struct file_system_type *get_fs_type(const char *name)
 	int len = dot ? dot - name : strlen(name);
 
 	fs = __get_fs_type(name, len);
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+	if (!fs && (___request_module(true, "grsec_modharden_fs", "fs-%.*s", len, name) == 0))
+#else
 	if (!fs && (request_module("fs-%.*s", len, name) == 0))
+#endif
 		fs = __get_fs_type(name, len);
 
 	if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
diff --git a/fs/fs_struct.c b/fs/fs_struct.c
index 7dca743..543d620 100644
--- a/fs/fs_struct.c
+++ b/fs/fs_struct.c
@@ -4,6 +4,7 @@
 #include <linux/path.h>
 #include <linux/slab.h>
 #include <linux/fs_struct.h>
+#include <linux/grsecurity.h>
 #include "internal.h"
 
 /*
@@ -19,6 +20,7 @@ void set_fs_root(struct fs_struct *fs, const struct path *path)
 	write_seqcount_begin(&fs->seq);
 	old_root = fs->root;
 	fs->root = *path;
+	gr_set_chroot_entries(current, path);
 	write_seqcount_end(&fs->seq);
 	spin_unlock(&fs->lock);
 	if (old_root.dentry)
@@ -67,6 +69,10 @@ void chroot_fs_refs(const struct path *old_root, const struct path *new_root)
 			int hits = 0;
 			spin_lock(&fs->lock);
 			write_seqcount_begin(&fs->seq);
+			/* this root replacement is only done by pivot_root,
+			   leave grsec's chroot tagging alone for this task
+			   so that a pivoted root isn't treated as a chroot
+			*/
 			hits += replace_path(&fs->root, old_root, new_root);
 			hits += replace_path(&fs->pwd, old_root, new_root);
 			write_seqcount_end(&fs->seq);
@@ -99,7 +105,8 @@ void exit_fs(struct task_struct *tsk)
 		task_lock(tsk);
 		spin_lock(&fs->lock);
 		tsk->fs = NULL;
-		kill = !--fs->users;
+		gr_clear_chroot_entries(tsk);
+		kill = !atomic_dec_return(&fs->users);
 		spin_unlock(&fs->lock);
 		task_unlock(tsk);
 		if (kill)
@@ -112,7 +119,7 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old)
 	struct fs_struct *fs = kmem_cache_alloc(fs_cachep, GFP_KERNEL);
 	/* We don't need to lock fs - think why ;-) */
 	if (fs) {
-		fs->users = 1;
+		atomic_set(&fs->users, 1);
 		fs->in_exec = 0;
 		spin_lock_init(&fs->lock);
 		seqcount_init(&fs->seq);
@@ -121,6 +128,9 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old)
 		spin_lock(&old->lock);
 		fs->root = old->root;
 		path_get(&fs->root);
+		/* instead of calling gr_set_chroot_entries here,
+		   we call it from every caller of this function
+		*/
 		fs->pwd = old->pwd;
 		path_get(&fs->pwd);
 		spin_unlock(&old->lock);
@@ -139,8 +149,9 @@ int unshare_fs_struct(void)
 
 	task_lock(current);
 	spin_lock(&fs->lock);
-	kill = !--fs->users;
+	kill = !atomic_dec_return(&fs->users);
 	current->fs = new_fs;
+	gr_set_chroot_entries(current, &new_fs->root);
 	spin_unlock(&fs->lock);
 	task_unlock(current);
 
@@ -153,13 +164,13 @@ EXPORT_SYMBOL_GPL(unshare_fs_struct);
 
 int current_umask(void)
 {
-	return current->fs->umask;
+	return current->fs->umask | gr_acl_umask();
 }
 EXPORT_SYMBOL(current_umask);
 
 /* to be mentioned only in INIT_TASK */
 struct fs_struct init_fs = {
-	.users		= 1,
+	.users		= ATOMIC_INIT(1),
 	.lock		= __SPIN_LOCK_UNLOCKED(init_fs.lock),
 	.seq		= SEQCNT_ZERO(init_fs.seq),
 	.umask		= 0022,
diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
index aec01be..cf81ff9 100644
--- a/fs/fscache/cookie.c
+++ b/fs/fscache/cookie.c
@@ -19,7 +19,7 @@
 
 struct kmem_cache *fscache_cookie_jar;
 
-static atomic_t fscache_object_debug_id = ATOMIC_INIT(0);
+static atomic_unchecked_t fscache_object_debug_id = ATOMIC_INIT(0);
 
 static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie);
 static int fscache_alloc_object(struct fscache_cache *cache,
@@ -69,11 +69,11 @@ struct fscache_cookie *__fscache_acquire_cookie(
 	       parent ? (char *) parent->def->name : "<no-parent>",
 	       def->name, netfs_data, enable);
 
-	fscache_stat(&fscache_n_acquires);
+	fscache_stat_unchecked(&fscache_n_acquires);
 
 	/* if there's no parent cookie, then we don't create one here either */
 	if (!parent) {
-		fscache_stat(&fscache_n_acquires_null);
+		fscache_stat_unchecked(&fscache_n_acquires_null);
 		_leave(" [no parent]");
 		return NULL;
 	}
@@ -88,7 +88,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
 	/* allocate and initialise a cookie */
 	cookie = kmem_cache_alloc(fscache_cookie_jar, GFP_KERNEL);
 	if (!cookie) {
-		fscache_stat(&fscache_n_acquires_oom);
+		fscache_stat_unchecked(&fscache_n_acquires_oom);
 		_leave(" [ENOMEM]");
 		return NULL;
 	}
@@ -115,13 +115,13 @@ struct fscache_cookie *__fscache_acquire_cookie(
 
 	switch (cookie->def->type) {
 	case FSCACHE_COOKIE_TYPE_INDEX:
-		fscache_stat(&fscache_n_cookie_index);
+		fscache_stat_unchecked(&fscache_n_cookie_index);
 		break;
 	case FSCACHE_COOKIE_TYPE_DATAFILE:
-		fscache_stat(&fscache_n_cookie_data);
+		fscache_stat_unchecked(&fscache_n_cookie_data);
 		break;
 	default:
-		fscache_stat(&fscache_n_cookie_special);
+		fscache_stat_unchecked(&fscache_n_cookie_special);
 		break;
 	}
 
@@ -135,7 +135,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
 			} else {
 				atomic_dec(&parent->n_children);
 				__fscache_cookie_put(cookie);
-				fscache_stat(&fscache_n_acquires_nobufs);
+				fscache_stat_unchecked(&fscache_n_acquires_nobufs);
 				_leave(" = NULL");
 				return NULL;
 			}
@@ -144,7 +144,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
 		}
 	}
 
-	fscache_stat(&fscache_n_acquires_ok);
+	fscache_stat_unchecked(&fscache_n_acquires_ok);
 	_leave(" = %p", cookie);
 	return cookie;
 }
@@ -213,7 +213,7 @@ static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie)
 	cache = fscache_select_cache_for_object(cookie->parent);
 	if (!cache) {
 		up_read(&fscache_addremove_sem);
-		fscache_stat(&fscache_n_acquires_no_cache);
+		fscache_stat_unchecked(&fscache_n_acquires_no_cache);
 		_leave(" = -ENOMEDIUM [no cache]");
 		return -ENOMEDIUM;
 	}
@@ -297,14 +297,14 @@ static int fscache_alloc_object(struct fscache_cache *cache,
 	object = cache->ops->alloc_object(cache, cookie);
 	fscache_stat_d(&fscache_n_cop_alloc_object);
 	if (IS_ERR(object)) {
-		fscache_stat(&fscache_n_object_no_alloc);
+		fscache_stat_unchecked(&fscache_n_object_no_alloc);
 		ret = PTR_ERR(object);
 		goto error;
 	}
 
-	fscache_stat(&fscache_n_object_alloc);
+	fscache_stat_unchecked(&fscache_n_object_alloc);
 
-	object->debug_id = atomic_inc_return(&fscache_object_debug_id);
+	object->debug_id = atomic_inc_return_unchecked(&fscache_object_debug_id);
 
 	_debug("ALLOC OBJ%x: %s {%lx}",
 	       object->debug_id, cookie->def->name, object->events);
@@ -418,7 +418,7 @@ void __fscache_invalidate(struct fscache_cookie *cookie)
 
 	_enter("{%s}", cookie->def->name);
 
-	fscache_stat(&fscache_n_invalidates);
+	fscache_stat_unchecked(&fscache_n_invalidates);
 
 	/* Only permit invalidation of data files.  Invalidating an index will
 	 * require the caller to release all its attachments to the tree rooted
@@ -477,10 +477,10 @@ void __fscache_update_cookie(struct fscache_cookie *cookie)
 {
 	struct fscache_object *object;
 
-	fscache_stat(&fscache_n_updates);
+	fscache_stat_unchecked(&fscache_n_updates);
 
 	if (!cookie) {
-		fscache_stat(&fscache_n_updates_null);
+		fscache_stat_unchecked(&fscache_n_updates_null);
 		_leave(" [no cookie]");
 		return;
 	}
@@ -581,12 +581,12 @@ EXPORT_SYMBOL(__fscache_disable_cookie);
  */
 void __fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire)
 {
-	fscache_stat(&fscache_n_relinquishes);
+	fscache_stat_unchecked(&fscache_n_relinquishes);
 	if (retire)
-		fscache_stat(&fscache_n_relinquishes_retire);
+		fscache_stat_unchecked(&fscache_n_relinquishes_retire);
 
 	if (!cookie) {
-		fscache_stat(&fscache_n_relinquishes_null);
+		fscache_stat_unchecked(&fscache_n_relinquishes_null);
 		_leave(" [no cookie]");
 		return;
 	}
@@ -687,7 +687,7 @@ int __fscache_check_consistency(struct fscache_cookie *cookie)
 	if (test_bit(FSCACHE_IOERROR, &object->cache->flags))
 		goto inconsistent;
 
-	op->debug_id = atomic_inc_return(&fscache_op_debug_id);
+	op->debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id);
 
 	__fscache_use_cookie(cookie);
 	if (fscache_submit_op(object, op) < 0)
diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
index bc6c08f..09c0d96 100644
--- a/fs/fscache/internal.h
+++ b/fs/fscache/internal.h
@@ -139,8 +139,8 @@ extern void fscache_operation_gc(struct work_struct *);
 extern int fscache_wait_for_deferred_lookup(struct fscache_cookie *);
 extern int fscache_wait_for_operation_activation(struct fscache_object *,
 						 struct fscache_operation *,
-						 atomic_t *,
-						 atomic_t *,
+						 atomic_unchecked_t *,
+						 atomic_unchecked_t *,
 						 void (*)(struct fscache_operation *));
 extern void fscache_invalidate_writes(struct fscache_cookie *);
 
@@ -159,101 +159,101 @@ extern void fscache_proc_cleanup(void);
  * stats.c
  */
 #ifdef CONFIG_FSCACHE_STATS
-extern atomic_t fscache_n_ops_processed[FSCACHE_MAX_THREADS];
-extern atomic_t fscache_n_objs_processed[FSCACHE_MAX_THREADS];
+extern atomic_unchecked_t fscache_n_ops_processed[FSCACHE_MAX_THREADS];
+extern atomic_unchecked_t fscache_n_objs_processed[FSCACHE_MAX_THREADS];
 
-extern atomic_t fscache_n_op_pend;
-extern atomic_t fscache_n_op_run;
-extern atomic_t fscache_n_op_enqueue;
-extern atomic_t fscache_n_op_deferred_release;
-extern atomic_t fscache_n_op_release;
-extern atomic_t fscache_n_op_gc;
-extern atomic_t fscache_n_op_cancelled;
-extern atomic_t fscache_n_op_rejected;
+extern atomic_unchecked_t fscache_n_op_pend;
+extern atomic_unchecked_t fscache_n_op_run;
+extern atomic_unchecked_t fscache_n_op_enqueue;
+extern atomic_unchecked_t fscache_n_op_deferred_release;
+extern atomic_unchecked_t fscache_n_op_release;
+extern atomic_unchecked_t fscache_n_op_gc;
+extern atomic_unchecked_t fscache_n_op_cancelled;
+extern atomic_unchecked_t fscache_n_op_rejected;
 
-extern atomic_t fscache_n_attr_changed;
-extern atomic_t fscache_n_attr_changed_ok;
-extern atomic_t fscache_n_attr_changed_nobufs;
-extern atomic_t fscache_n_attr_changed_nomem;
-extern atomic_t fscache_n_attr_changed_calls;
+extern atomic_unchecked_t fscache_n_attr_changed;
+extern atomic_unchecked_t fscache_n_attr_changed_ok;
+extern atomic_unchecked_t fscache_n_attr_changed_nobufs;
+extern atomic_unchecked_t fscache_n_attr_changed_nomem;
+extern atomic_unchecked_t fscache_n_attr_changed_calls;
 
-extern atomic_t fscache_n_allocs;
-extern atomic_t fscache_n_allocs_ok;
-extern atomic_t fscache_n_allocs_wait;
-extern atomic_t fscache_n_allocs_nobufs;
-extern atomic_t fscache_n_allocs_intr;
-extern atomic_t fscache_n_allocs_object_dead;
-extern atomic_t fscache_n_alloc_ops;
-extern atomic_t fscache_n_alloc_op_waits;
+extern atomic_unchecked_t fscache_n_allocs;
+extern atomic_unchecked_t fscache_n_allocs_ok;
+extern atomic_unchecked_t fscache_n_allocs_wait;
+extern atomic_unchecked_t fscache_n_allocs_nobufs;
+extern atomic_unchecked_t fscache_n_allocs_intr;
+extern atomic_unchecked_t fscache_n_allocs_object_dead;
+extern atomic_unchecked_t fscache_n_alloc_ops;
+extern atomic_unchecked_t fscache_n_alloc_op_waits;
 
-extern atomic_t fscache_n_retrievals;
-extern atomic_t fscache_n_retrievals_ok;
-extern atomic_t fscache_n_retrievals_wait;
-extern atomic_t fscache_n_retrievals_nodata;
-extern atomic_t fscache_n_retrievals_nobufs;
-extern atomic_t fscache_n_retrievals_intr;
-extern atomic_t fscache_n_retrievals_nomem;
-extern atomic_t fscache_n_retrievals_object_dead;
-extern atomic_t fscache_n_retrieval_ops;
-extern atomic_t fscache_n_retrieval_op_waits;
+extern atomic_unchecked_t fscache_n_retrievals;
+extern atomic_unchecked_t fscache_n_retrievals_ok;
+extern atomic_unchecked_t fscache_n_retrievals_wait;
+extern atomic_unchecked_t fscache_n_retrievals_nodata;
+extern atomic_unchecked_t fscache_n_retrievals_nobufs;
+extern atomic_unchecked_t fscache_n_retrievals_intr;
+extern atomic_unchecked_t fscache_n_retrievals_nomem;
+extern atomic_unchecked_t fscache_n_retrievals_object_dead;
+extern atomic_unchecked_t fscache_n_retrieval_ops;
+extern atomic_unchecked_t fscache_n_retrieval_op_waits;
 
-extern atomic_t fscache_n_stores;
-extern atomic_t fscache_n_stores_ok;
-extern atomic_t fscache_n_stores_again;
-extern atomic_t fscache_n_stores_nobufs;
-extern atomic_t fscache_n_stores_oom;
-extern atomic_t fscache_n_store_ops;
-extern atomic_t fscache_n_store_calls;
-extern atomic_t fscache_n_store_pages;
-extern atomic_t fscache_n_store_radix_deletes;
-extern atomic_t fscache_n_store_pages_over_limit;
+extern atomic_unchecked_t fscache_n_stores;
+extern atomic_unchecked_t fscache_n_stores_ok;
+extern atomic_unchecked_t fscache_n_stores_again;
+extern atomic_unchecked_t fscache_n_stores_nobufs;
+extern atomic_unchecked_t fscache_n_stores_oom;
+extern atomic_unchecked_t fscache_n_store_ops;
+extern atomic_unchecked_t fscache_n_store_calls;
+extern atomic_unchecked_t fscache_n_store_pages;
+extern atomic_unchecked_t fscache_n_store_radix_deletes;
+extern atomic_unchecked_t fscache_n_store_pages_over_limit;
 
-extern atomic_t fscache_n_store_vmscan_not_storing;
-extern atomic_t fscache_n_store_vmscan_gone;
-extern atomic_t fscache_n_store_vmscan_busy;
-extern atomic_t fscache_n_store_vmscan_cancelled;
-extern atomic_t fscache_n_store_vmscan_wait;
+extern atomic_unchecked_t fscache_n_store_vmscan_not_storing;
+extern atomic_unchecked_t fscache_n_store_vmscan_gone;
+extern atomic_unchecked_t fscache_n_store_vmscan_busy;
+extern atomic_unchecked_t fscache_n_store_vmscan_cancelled;
+extern atomic_unchecked_t fscache_n_store_vmscan_wait;
 
-extern atomic_t fscache_n_marks;
-extern atomic_t fscache_n_uncaches;
+extern atomic_unchecked_t fscache_n_marks;
+extern atomic_unchecked_t fscache_n_uncaches;
 
-extern atomic_t fscache_n_acquires;
-extern atomic_t fscache_n_acquires_null;
-extern atomic_t fscache_n_acquires_no_cache;
-extern atomic_t fscache_n_acquires_ok;
-extern atomic_t fscache_n_acquires_nobufs;
-extern atomic_t fscache_n_acquires_oom;
+extern atomic_unchecked_t fscache_n_acquires;
+extern atomic_unchecked_t fscache_n_acquires_null;
+extern atomic_unchecked_t fscache_n_acquires_no_cache;
+extern atomic_unchecked_t fscache_n_acquires_ok;
+extern atomic_unchecked_t fscache_n_acquires_nobufs;
+extern atomic_unchecked_t fscache_n_acquires_oom;
 
-extern atomic_t fscache_n_invalidates;
-extern atomic_t fscache_n_invalidates_run;
+extern atomic_unchecked_t fscache_n_invalidates;
+extern atomic_unchecked_t fscache_n_invalidates_run;
 
-extern atomic_t fscache_n_updates;
-extern atomic_t fscache_n_updates_null;
-extern atomic_t fscache_n_updates_run;
+extern atomic_unchecked_t fscache_n_updates;
+extern atomic_unchecked_t fscache_n_updates_null;
+extern atomic_unchecked_t fscache_n_updates_run;
 
-extern atomic_t fscache_n_relinquishes;
-extern atomic_t fscache_n_relinquishes_null;
-extern atomic_t fscache_n_relinquishes_waitcrt;
-extern atomic_t fscache_n_relinquishes_retire;
+extern atomic_unchecked_t fscache_n_relinquishes;
+extern atomic_unchecked_t fscache_n_relinquishes_null;
+extern atomic_unchecked_t fscache_n_relinquishes_waitcrt;
+extern atomic_unchecked_t fscache_n_relinquishes_retire;
 
-extern atomic_t fscache_n_cookie_index;
-extern atomic_t fscache_n_cookie_data;
-extern atomic_t fscache_n_cookie_special;
+extern atomic_unchecked_t fscache_n_cookie_index;
+extern atomic_unchecked_t fscache_n_cookie_data;
+extern atomic_unchecked_t fscache_n_cookie_special;
 
-extern atomic_t fscache_n_object_alloc;
-extern atomic_t fscache_n_object_no_alloc;
-extern atomic_t fscache_n_object_lookups;
-extern atomic_t fscache_n_object_lookups_negative;
-extern atomic_t fscache_n_object_lookups_positive;
-extern atomic_t fscache_n_object_lookups_timed_out;
-extern atomic_t fscache_n_object_created;
-extern atomic_t fscache_n_object_avail;
-extern atomic_t fscache_n_object_dead;
+extern atomic_unchecked_t fscache_n_object_alloc;
+extern atomic_unchecked_t fscache_n_object_no_alloc;
+extern atomic_unchecked_t fscache_n_object_lookups;
+extern atomic_unchecked_t fscache_n_object_lookups_negative;
+extern atomic_unchecked_t fscache_n_object_lookups_positive;
+extern atomic_unchecked_t fscache_n_object_lookups_timed_out;
+extern atomic_unchecked_t fscache_n_object_created;
+extern atomic_unchecked_t fscache_n_object_avail;
+extern atomic_unchecked_t fscache_n_object_dead;
 
-extern atomic_t fscache_n_checkaux_none;
-extern atomic_t fscache_n_checkaux_okay;
-extern atomic_t fscache_n_checkaux_update;
-extern atomic_t fscache_n_checkaux_obsolete;
+extern atomic_unchecked_t fscache_n_checkaux_none;
+extern atomic_unchecked_t fscache_n_checkaux_okay;
+extern atomic_unchecked_t fscache_n_checkaux_update;
+extern atomic_unchecked_t fscache_n_checkaux_obsolete;
 
 extern atomic_t fscache_n_cop_alloc_object;
 extern atomic_t fscache_n_cop_lookup_object;
@@ -278,6 +278,11 @@ static inline void fscache_stat(atomic_t *stat)
 	atomic_inc(stat);
 }
 
+static inline void fscache_stat_unchecked(atomic_unchecked_t *stat)
+{
+	atomic_inc_unchecked(stat);
+}
+
 static inline void fscache_stat_d(atomic_t *stat)
 {
 	atomic_dec(stat);
@@ -290,6 +295,7 @@ extern const struct file_operations fscache_stats_fops;
 
 #define __fscache_stat(stat) (NULL)
 #define fscache_stat(stat) do {} while (0)
+#define fscache_stat_unchecked(stat) do {} while (0)
 #define fscache_stat_d(stat) do {} while (0)
 #endif
 
diff --git a/fs/fscache/object.c b/fs/fscache/object.c
index d3b4539..ed0c659 100644
--- a/fs/fscache/object.c
+++ b/fs/fscache/object.c
@@ -454,7 +454,7 @@ static const struct fscache_state *fscache_look_up_object(struct fscache_object
 	_debug("LOOKUP \"%s\" in \"%s\"",
 	       cookie->def->name, object->cache->tag->name);
 
-	fscache_stat(&fscache_n_object_lookups);
+	fscache_stat_unchecked(&fscache_n_object_lookups);
 	fscache_stat(&fscache_n_cop_lookup_object);
 	ret = object->cache->ops->lookup_object(object);
 	fscache_stat_d(&fscache_n_cop_lookup_object);
@@ -464,7 +464,7 @@ static const struct fscache_state *fscache_look_up_object(struct fscache_object
 	if (ret == -ETIMEDOUT) {
 		/* probably stuck behind another object, so move this one to
 		 * the back of the queue */
-		fscache_stat(&fscache_n_object_lookups_timed_out);
+		fscache_stat_unchecked(&fscache_n_object_lookups_timed_out);
 		_leave(" [timeout]");
 		return NO_TRANSIT;
 	}
@@ -492,7 +492,7 @@ void fscache_object_lookup_negative(struct fscache_object *object)
 	_enter("{OBJ%x,%s}", object->debug_id, object->state->name);
 
 	if (!test_and_set_bit(FSCACHE_OBJECT_IS_LOOKED_UP, &object->flags)) {
-		fscache_stat(&fscache_n_object_lookups_negative);
+		fscache_stat_unchecked(&fscache_n_object_lookups_negative);
 
 		/* Allow write requests to begin stacking up and read requests to begin
 		 * returning ENODATA.
@@ -527,7 +527,7 @@ void fscache_obtained_object(struct fscache_object *object)
 	/* if we were still looking up, then we must have a positive lookup
 	 * result, in which case there may be data available */
 	if (!test_and_set_bit(FSCACHE_OBJECT_IS_LOOKED_UP, &object->flags)) {
-		fscache_stat(&fscache_n_object_lookups_positive);
+		fscache_stat_unchecked(&fscache_n_object_lookups_positive);
 
 		/* We do (presumably) have data */
 		clear_bit_unlock(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags);
@@ -539,7 +539,7 @@ void fscache_obtained_object(struct fscache_object *object)
 		clear_bit_unlock(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags);
 		wake_up_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP);
 	} else {
-		fscache_stat(&fscache_n_object_created);
+		fscache_stat_unchecked(&fscache_n_object_created);
 	}
 
 	set_bit(FSCACHE_OBJECT_IS_AVAILABLE, &object->flags);
@@ -575,7 +575,7 @@ static const struct fscache_state *fscache_object_available(struct fscache_objec
 	fscache_stat_d(&fscache_n_cop_lookup_complete);
 
 	fscache_hist(fscache_obj_instantiate_histogram, object->lookup_jif);
-	fscache_stat(&fscache_n_object_avail);
+	fscache_stat_unchecked(&fscache_n_object_avail);
 
 	_leave("");
 	return transit_to(JUMPSTART_DEPS);
@@ -722,7 +722,7 @@ static const struct fscache_state *fscache_drop_object(struct fscache_object *ob
 
 	/* this just shifts the object release to the work processor */
 	fscache_put_object(object);
-	fscache_stat(&fscache_n_object_dead);
+	fscache_stat_unchecked(&fscache_n_object_dead);
 
 	_leave("");
 	return transit_to(OBJECT_DEAD);
@@ -887,7 +887,7 @@ enum fscache_checkaux fscache_check_aux(struct fscache_object *object,
 	enum fscache_checkaux result;
 
 	if (!object->cookie->def->check_aux) {
-		fscache_stat(&fscache_n_checkaux_none);
+		fscache_stat_unchecked(&fscache_n_checkaux_none);
 		return FSCACHE_CHECKAUX_OKAY;
 	}
 
@@ -896,17 +896,17 @@ enum fscache_checkaux fscache_check_aux(struct fscache_object *object,
 	switch (result) {
 		/* entry okay as is */
 	case FSCACHE_CHECKAUX_OKAY:
-		fscache_stat(&fscache_n_checkaux_okay);
+		fscache_stat_unchecked(&fscache_n_checkaux_okay);
 		break;
 
 		/* entry requires update */
 	case FSCACHE_CHECKAUX_NEEDS_UPDATE:
-		fscache_stat(&fscache_n_checkaux_update);
+		fscache_stat_unchecked(&fscache_n_checkaux_update);
 		break;
 
 		/* entry requires deletion */
 	case FSCACHE_CHECKAUX_OBSOLETE:
-		fscache_stat(&fscache_n_checkaux_obsolete);
+		fscache_stat_unchecked(&fscache_n_checkaux_obsolete);
 		break;
 
 	default:
@@ -992,7 +992,7 @@ static const struct fscache_state *fscache_invalidate_object(struct fscache_obje
 {
 	const struct fscache_state *s;
 
-	fscache_stat(&fscache_n_invalidates_run);
+	fscache_stat_unchecked(&fscache_n_invalidates_run);
 	fscache_stat(&fscache_n_cop_invalidate_object);
 	s = _fscache_invalidate_object(object, event);
 	fscache_stat_d(&fscache_n_cop_invalidate_object);
@@ -1007,7 +1007,7 @@ static const struct fscache_state *fscache_update_object(struct fscache_object *
 {
 	_enter("{OBJ%x},%d", object->debug_id, event);
 
-	fscache_stat(&fscache_n_updates_run);
+	fscache_stat_unchecked(&fscache_n_updates_run);
 	fscache_stat(&fscache_n_cop_update_object);
 	object->cache->ops->update_object(object);
 	fscache_stat_d(&fscache_n_cop_update_object);
diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c
index e7b87a0..a85d47a 100644
--- a/fs/fscache/operation.c
+++ b/fs/fscache/operation.c
@@ -17,7 +17,7 @@
 #include <linux/slab.h>
 #include "internal.h"
 
-atomic_t fscache_op_debug_id;
+atomic_unchecked_t fscache_op_debug_id;
 EXPORT_SYMBOL(fscache_op_debug_id);
 
 /**
@@ -39,7 +39,7 @@ void fscache_enqueue_operation(struct fscache_operation *op)
 	ASSERTCMP(atomic_read(&op->usage), >, 0);
 	ASSERTCMP(op->state, ==, FSCACHE_OP_ST_IN_PROGRESS);
 
-	fscache_stat(&fscache_n_op_enqueue);
+	fscache_stat_unchecked(&fscache_n_op_enqueue);
 	switch (op->flags & FSCACHE_OP_TYPE) {
 	case FSCACHE_OP_ASYNC:
 		_debug("queue async");
@@ -72,7 +72,7 @@ static void fscache_run_op(struct fscache_object *object,
 		wake_up_bit(&op->flags, FSCACHE_OP_WAITING);
 	if (op->processor)
 		fscache_enqueue_operation(op);
-	fscache_stat(&fscache_n_op_run);
+	fscache_stat_unchecked(&fscache_n_op_run);
 }
 
 /*
@@ -104,11 +104,11 @@ int fscache_submit_exclusive_op(struct fscache_object *object,
 		if (object->n_in_progress > 0) {
 			atomic_inc(&op->usage);
 			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
+			fscache_stat_unchecked(&fscache_n_op_pend);
 		} else if (!list_empty(&object->pending_ops)) {
 			atomic_inc(&op->usage);
 			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
+			fscache_stat_unchecked(&fscache_n_op_pend);
 			fscache_start_operations(object);
 		} else {
 			ASSERTCMP(object->n_in_progress, ==, 0);
@@ -124,7 +124,7 @@ int fscache_submit_exclusive_op(struct fscache_object *object,
 		object->n_exclusive++;	/* reads and writes must wait */
 		atomic_inc(&op->usage);
 		list_add_tail(&op->pend_link, &object->pending_ops);
-		fscache_stat(&fscache_n_op_pend);
+		fscache_stat_unchecked(&fscache_n_op_pend);
 		ret = 0;
 	} else {
 		/* If we're in any other state, there must have been an I/O
@@ -211,11 +211,11 @@ int fscache_submit_op(struct fscache_object *object,
 		if (object->n_exclusive > 0) {
 			atomic_inc(&op->usage);
 			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
+			fscache_stat_unchecked(&fscache_n_op_pend);
 		} else if (!list_empty(&object->pending_ops)) {
 			atomic_inc(&op->usage);
 			list_add_tail(&op->pend_link, &object->pending_ops);
-			fscache_stat(&fscache_n_op_pend);
+			fscache_stat_unchecked(&fscache_n_op_pend);
 			fscache_start_operations(object);
 		} else {
 			ASSERTCMP(object->n_exclusive, ==, 0);
@@ -227,10 +227,10 @@ int fscache_submit_op(struct fscache_object *object,
 		object->n_ops++;
 		atomic_inc(&op->usage);
 		list_add_tail(&op->pend_link, &object->pending_ops);
-		fscache_stat(&fscache_n_op_pend);
+		fscache_stat_unchecked(&fscache_n_op_pend);
 		ret = 0;
 	} else if (fscache_object_is_dying(object)) {
-		fscache_stat(&fscache_n_op_rejected);
+		fscache_stat_unchecked(&fscache_n_op_rejected);
 		op->state = FSCACHE_OP_ST_CANCELLED;
 		ret = -ENOBUFS;
 	} else if (!test_bit(FSCACHE_IOERROR, &object->cache->flags)) {
@@ -309,7 +309,7 @@ int fscache_cancel_op(struct fscache_operation *op,
 	ret = -EBUSY;
 	if (op->state == FSCACHE_OP_ST_PENDING) {
 		ASSERT(!list_empty(&op->pend_link));
-		fscache_stat(&fscache_n_op_cancelled);
+		fscache_stat_unchecked(&fscache_n_op_cancelled);
 		list_del_init(&op->pend_link);
 		if (do_cancel)
 			do_cancel(op);
@@ -341,7 +341,7 @@ void fscache_cancel_all_ops(struct fscache_object *object)
 	while (!list_empty(&object->pending_ops)) {
 		op = list_entry(object->pending_ops.next,
 				struct fscache_operation, pend_link);
-		fscache_stat(&fscache_n_op_cancelled);
+		fscache_stat_unchecked(&fscache_n_op_cancelled);
 		list_del_init(&op->pend_link);
 
 		ASSERTCMP(op->state, ==, FSCACHE_OP_ST_PENDING);
@@ -413,7 +413,7 @@ void fscache_put_operation(struct fscache_operation *op)
 		    op->state, ==, FSCACHE_OP_ST_CANCELLED);
 	op->state = FSCACHE_OP_ST_DEAD;
 
-	fscache_stat(&fscache_n_op_release);
+	fscache_stat_unchecked(&fscache_n_op_release);
 
 	if (op->release) {
 		op->release(op);
@@ -432,7 +432,7 @@ void fscache_put_operation(struct fscache_operation *op)
 	 * lock, and defer it otherwise */
 	if (!spin_trylock(&object->lock)) {
 		_debug("defer put");
-		fscache_stat(&fscache_n_op_deferred_release);
+		fscache_stat_unchecked(&fscache_n_op_deferred_release);
 
 		cache = object->cache;
 		spin_lock(&cache->op_gc_list_lock);
@@ -485,7 +485,7 @@ void fscache_operation_gc(struct work_struct *work)
 
 		_debug("GC DEFERRED REL OBJ%x OP%x",
 		       object->debug_id, op->debug_id);
-		fscache_stat(&fscache_n_op_gc);
+		fscache_stat_unchecked(&fscache_n_op_gc);
 
 		ASSERTCMP(atomic_read(&op->usage), ==, 0);
 		ASSERTCMP(op->state, ==, FSCACHE_OP_ST_DEAD);
diff --git a/fs/fscache/page.c b/fs/fscache/page.c
index ed70714..67f4982 100644
--- a/fs/fscache/page.c
+++ b/fs/fscache/page.c
@@ -61,7 +61,7 @@ try_again:
 	val = radix_tree_lookup(&cookie->stores, page->index);
 	if (!val) {
 		rcu_read_unlock();
-		fscache_stat(&fscache_n_store_vmscan_not_storing);
+		fscache_stat_unchecked(&fscache_n_store_vmscan_not_storing);
 		__fscache_uncache_page(cookie, page);
 		return true;
 	}
@@ -91,11 +91,11 @@ try_again:
 	spin_unlock(&cookie->stores_lock);
 
 	if (xpage) {
-		fscache_stat(&fscache_n_store_vmscan_cancelled);
-		fscache_stat(&fscache_n_store_radix_deletes);
+		fscache_stat_unchecked(&fscache_n_store_vmscan_cancelled);
+		fscache_stat_unchecked(&fscache_n_store_radix_deletes);
 		ASSERTCMP(xpage, ==, page);
 	} else {
-		fscache_stat(&fscache_n_store_vmscan_gone);
+		fscache_stat_unchecked(&fscache_n_store_vmscan_gone);
 	}
 
 	wake_up_bit(&cookie->flags, 0);
@@ -110,11 +110,11 @@ page_busy:
 	 * sleeping on memory allocation, so we may need to impose a timeout
 	 * too. */
 	if (!(gfp & __GFP_WAIT) || !(gfp & __GFP_FS)) {
-		fscache_stat(&fscache_n_store_vmscan_busy);
+		fscache_stat_unchecked(&fscache_n_store_vmscan_busy);
 		return false;
 	}
 
-	fscache_stat(&fscache_n_store_vmscan_wait);
+	fscache_stat_unchecked(&fscache_n_store_vmscan_wait);
 	__fscache_wait_on_page_write(cookie, page);
 	gfp &= ~__GFP_WAIT;
 	goto try_again;
@@ -140,7 +140,7 @@ static void fscache_end_page_write(struct fscache_object *object,
 				     FSCACHE_COOKIE_STORING_TAG);
 		if (!radix_tree_tag_get(&cookie->stores, page->index,
 					FSCACHE_COOKIE_PENDING_TAG)) {
-			fscache_stat(&fscache_n_store_radix_deletes);
+			fscache_stat_unchecked(&fscache_n_store_radix_deletes);
 			xpage = radix_tree_delete(&cookie->stores, page->index);
 		}
 		spin_unlock(&cookie->stores_lock);
@@ -161,7 +161,7 @@ static void fscache_attr_changed_op(struct fscache_operation *op)
 
 	_enter("{OBJ%x OP%x}", object->debug_id, op->debug_id);
 
-	fscache_stat(&fscache_n_attr_changed_calls);
+	fscache_stat_unchecked(&fscache_n_attr_changed_calls);
 
 	if (fscache_object_is_active(object)) {
 		fscache_stat(&fscache_n_cop_attr_changed);
@@ -188,11 +188,11 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
 
 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
 
-	fscache_stat(&fscache_n_attr_changed);
+	fscache_stat_unchecked(&fscache_n_attr_changed);
 
 	op = kzalloc(sizeof(*op), GFP_KERNEL);
 	if (!op) {
-		fscache_stat(&fscache_n_attr_changed_nomem);
+		fscache_stat_unchecked(&fscache_n_attr_changed_nomem);
 		_leave(" = -ENOMEM");
 		return -ENOMEM;
 	}
@@ -214,7 +214,7 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
 	if (fscache_submit_exclusive_op(object, op) < 0)
 		goto nobufs;
 	spin_unlock(&cookie->lock);
-	fscache_stat(&fscache_n_attr_changed_ok);
+	fscache_stat_unchecked(&fscache_n_attr_changed_ok);
 	fscache_put_operation(op);
 	_leave(" = 0");
 	return 0;
@@ -225,7 +225,7 @@ nobufs:
 	kfree(op);
 	if (wake_cookie)
 		__fscache_wake_unused_cookie(cookie);
-	fscache_stat(&fscache_n_attr_changed_nobufs);
+	fscache_stat_unchecked(&fscache_n_attr_changed_nobufs);
 	_leave(" = %d", -ENOBUFS);
 	return -ENOBUFS;
 }
@@ -264,7 +264,7 @@ static struct fscache_retrieval *fscache_alloc_retrieval(
 	/* allocate a retrieval operation and attempt to submit it */
 	op = kzalloc(sizeof(*op), GFP_NOIO);
 	if (!op) {
-		fscache_stat(&fscache_n_retrievals_nomem);
+		fscache_stat_unchecked(&fscache_n_retrievals_nomem);
 		return NULL;
 	}
 
@@ -294,13 +294,13 @@ int fscache_wait_for_deferred_lookup(struct fscache_cookie *cookie)
 		return 0;
 	}
 
-	fscache_stat(&fscache_n_retrievals_wait);
+	fscache_stat_unchecked(&fscache_n_retrievals_wait);
 
 	jif = jiffies;
 	if (wait_on_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP,
 			fscache_wait_bit_interruptible,
 			TASK_INTERRUPTIBLE) != 0) {
-		fscache_stat(&fscache_n_retrievals_intr);
+		fscache_stat_unchecked(&fscache_n_retrievals_intr);
 		_leave(" = -ERESTARTSYS");
 		return -ERESTARTSYS;
 	}
@@ -329,8 +329,8 @@ static void fscache_do_cancel_retrieval(struct fscache_operation *_op)
  */
 int fscache_wait_for_operation_activation(struct fscache_object *object,
 					  struct fscache_operation *op,
-					  atomic_t *stat_op_waits,
-					  atomic_t *stat_object_dead,
+					  atomic_unchecked_t *stat_op_waits,
+					  atomic_unchecked_t *stat_object_dead,
 					  void (*do_cancel)(struct fscache_operation *))
 {
 	int ret;
@@ -340,7 +340,7 @@ int fscache_wait_for_operation_activation(struct fscache_object *object,
 
 	_debug(">>> WT");
 	if (stat_op_waits)
-		fscache_stat(stat_op_waits);
+		fscache_stat_unchecked(stat_op_waits);
 	if (wait_on_bit(&op->flags, FSCACHE_OP_WAITING,
 			fscache_wait_bit_interruptible,
 			TASK_INTERRUPTIBLE) != 0) {
@@ -358,7 +358,7 @@ int fscache_wait_for_operation_activation(struct fscache_object *object,
 check_if_dead:
 	if (op->state == FSCACHE_OP_ST_CANCELLED) {
 		if (stat_object_dead)
-			fscache_stat(stat_object_dead);
+			fscache_stat_unchecked(stat_object_dead);
 		_leave(" = -ENOBUFS [cancelled]");
 		return -ENOBUFS;
 	}
@@ -366,7 +366,7 @@ check_if_dead:
 		pr_err("%s() = -ENOBUFS [obj dead %d]\n", __func__, op->state);
 		fscache_cancel_op(op, do_cancel);
 		if (stat_object_dead)
-			fscache_stat(stat_object_dead);
+			fscache_stat_unchecked(stat_object_dead);
 		return -ENOBUFS;
 	}
 	return 0;
@@ -394,7 +394,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
 
 	_enter("%p,%p,,,", cookie, page);
 
-	fscache_stat(&fscache_n_retrievals);
+	fscache_stat_unchecked(&fscache_n_retrievals);
 
 	if (hlist_empty(&cookie->backing_objects))
 		goto nobufs;
@@ -436,7 +436,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
 		goto nobufs_unlock_dec;
 	spin_unlock(&cookie->lock);
 
-	fscache_stat(&fscache_n_retrieval_ops);
+	fscache_stat_unchecked(&fscache_n_retrieval_ops);
 
 	/* pin the netfs read context in case we need to do the actual netfs
 	 * read because we've encountered a cache read failure */
@@ -467,15 +467,15 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
 
 error:
 	if (ret == -ENOMEM)
-		fscache_stat(&fscache_n_retrievals_nomem);
+		fscache_stat_unchecked(&fscache_n_retrievals_nomem);
 	else if (ret == -ERESTARTSYS)
-		fscache_stat(&fscache_n_retrievals_intr);
+		fscache_stat_unchecked(&fscache_n_retrievals_intr);
 	else if (ret == -ENODATA)
-		fscache_stat(&fscache_n_retrievals_nodata);
+		fscache_stat_unchecked(&fscache_n_retrievals_nodata);
 	else if (ret < 0)
-		fscache_stat(&fscache_n_retrievals_nobufs);
+		fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
 	else
-		fscache_stat(&fscache_n_retrievals_ok);
+		fscache_stat_unchecked(&fscache_n_retrievals_ok);
 
 	fscache_put_retrieval(op);
 	_leave(" = %d", ret);
@@ -490,7 +490,7 @@ nobufs_unlock:
 		__fscache_wake_unused_cookie(cookie);
 	kfree(op);
 nobufs:
-	fscache_stat(&fscache_n_retrievals_nobufs);
+	fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
 	_leave(" = -ENOBUFS");
 	return -ENOBUFS;
 }
@@ -529,7 +529,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
 
 	_enter("%p,,%d,,,", cookie, *nr_pages);
 
-	fscache_stat(&fscache_n_retrievals);
+	fscache_stat_unchecked(&fscache_n_retrievals);
 
 	if (hlist_empty(&cookie->backing_objects))
 		goto nobufs;
@@ -567,7 +567,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
 		goto nobufs_unlock_dec;
 	spin_unlock(&cookie->lock);
 
-	fscache_stat(&fscache_n_retrieval_ops);
+	fscache_stat_unchecked(&fscache_n_retrieval_ops);
 
 	/* pin the netfs read context in case we need to do the actual netfs
 	 * read because we've encountered a cache read failure */
@@ -598,15 +598,15 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
 
 error:
 	if (ret == -ENOMEM)
-		fscache_stat(&fscache_n_retrievals_nomem);
+		fscache_stat_unchecked(&fscache_n_retrievals_nomem);
 	else if (ret == -ERESTARTSYS)
-		fscache_stat(&fscache_n_retrievals_intr);
+		fscache_stat_unchecked(&fscache_n_retrievals_intr);
 	else if (ret == -ENODATA)
-		fscache_stat(&fscache_n_retrievals_nodata);
+		fscache_stat_unchecked(&fscache_n_retrievals_nodata);
 	else if (ret < 0)
-		fscache_stat(&fscache_n_retrievals_nobufs);
+		fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
 	else
-		fscache_stat(&fscache_n_retrievals_ok);
+		fscache_stat_unchecked(&fscache_n_retrievals_ok);
 
 	fscache_put_retrieval(op);
 	_leave(" = %d", ret);
@@ -621,7 +621,7 @@ nobufs_unlock:
 	if (wake_cookie)
 		__fscache_wake_unused_cookie(cookie);
 nobufs:
-	fscache_stat(&fscache_n_retrievals_nobufs);
+	fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
 	_leave(" = -ENOBUFS");
 	return -ENOBUFS;
 }
@@ -646,7 +646,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
 
 	_enter("%p,%p,,,", cookie, page);
 
-	fscache_stat(&fscache_n_allocs);
+	fscache_stat_unchecked(&fscache_n_allocs);
 
 	if (hlist_empty(&cookie->backing_objects))
 		goto nobufs;
@@ -680,7 +680,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
 		goto nobufs_unlock_dec;
 	spin_unlock(&cookie->lock);
 
-	fscache_stat(&fscache_n_alloc_ops);
+	fscache_stat_unchecked(&fscache_n_alloc_ops);
 
 	ret = fscache_wait_for_operation_activation(
 		object, &op->op,
@@ -697,11 +697,11 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
 
 error:
 	if (ret == -ERESTARTSYS)
-		fscache_stat(&fscache_n_allocs_intr);
+		fscache_stat_unchecked(&fscache_n_allocs_intr);
 	else if (ret < 0)
-		fscache_stat(&fscache_n_allocs_nobufs);
+		fscache_stat_unchecked(&fscache_n_allocs_nobufs);
 	else
-		fscache_stat(&fscache_n_allocs_ok);
+		fscache_stat_unchecked(&fscache_n_allocs_ok);
 
 	fscache_put_retrieval(op);
 	_leave(" = %d", ret);
@@ -715,7 +715,7 @@ nobufs_unlock:
 	if (wake_cookie)
 		__fscache_wake_unused_cookie(cookie);
 nobufs:
-	fscache_stat(&fscache_n_allocs_nobufs);
+	fscache_stat_unchecked(&fscache_n_allocs_nobufs);
 	_leave(" = -ENOBUFS");
 	return -ENOBUFS;
 }
@@ -791,7 +791,7 @@ static void fscache_write_op(struct fscache_operation *_op)
 
 	spin_lock(&cookie->stores_lock);
 
-	fscache_stat(&fscache_n_store_calls);
+	fscache_stat_unchecked(&fscache_n_store_calls);
 
 	/* find a page to store */
 	page = NULL;
@@ -802,7 +802,7 @@ static void fscache_write_op(struct fscache_operation *_op)
 	page = results[0];
 	_debug("gang %d [%lx]", n, page->index);
 	if (page->index > op->store_limit) {
-		fscache_stat(&fscache_n_store_pages_over_limit);
+		fscache_stat_unchecked(&fscache_n_store_pages_over_limit);
 		goto superseded;
 	}
 
@@ -814,7 +814,7 @@ static void fscache_write_op(struct fscache_operation *_op)
 	spin_unlock(&cookie->stores_lock);
 	spin_unlock(&object->lock);
 
-	fscache_stat(&fscache_n_store_pages);
+	fscache_stat_unchecked(&fscache_n_store_pages);
 	fscache_stat(&fscache_n_cop_write_page);
 	ret = object->cache->ops->write_page(op, page);
 	fscache_stat_d(&fscache_n_cop_write_page);
@@ -918,7 +918,7 @@ int __fscache_write_page(struct fscache_cookie *cookie,
 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
 	ASSERT(PageFsCache(page));
 
-	fscache_stat(&fscache_n_stores);
+	fscache_stat_unchecked(&fscache_n_stores);
 
 	if (test_bit(FSCACHE_COOKIE_INVALIDATING, &cookie->flags)) {
 		_leave(" = -ENOBUFS [invalidating]");
@@ -977,7 +977,7 @@ int __fscache_write_page(struct fscache_cookie *cookie,
 	spin_unlock(&cookie->stores_lock);
 	spin_unlock(&object->lock);
 
-	op->op.debug_id	= atomic_inc_return(&fscache_op_debug_id);
+	op->op.debug_id	= atomic_inc_return_unchecked(&fscache_op_debug_id);
 	op->store_limit = object->store_limit;
 
 	__fscache_use_cookie(cookie);
@@ -986,8 +986,8 @@ int __fscache_write_page(struct fscache_cookie *cookie,
 
 	spin_unlock(&cookie->lock);
 	radix_tree_preload_end();
-	fscache_stat(&fscache_n_store_ops);
-	fscache_stat(&fscache_n_stores_ok);
+	fscache_stat_unchecked(&fscache_n_store_ops);
+	fscache_stat_unchecked(&fscache_n_stores_ok);
 
 	/* the work queue now carries its own ref on the object */
 	fscache_put_operation(&op->op);
@@ -995,14 +995,14 @@ int __fscache_write_page(struct fscache_cookie *cookie,
 	return 0;
 
 already_queued:
-	fscache_stat(&fscache_n_stores_again);
+	fscache_stat_unchecked(&fscache_n_stores_again);
 already_pending:
 	spin_unlock(&cookie->stores_lock);
 	spin_unlock(&object->lock);
 	spin_unlock(&cookie->lock);
 	radix_tree_preload_end();
 	kfree(op);
-	fscache_stat(&fscache_n_stores_ok);
+	fscache_stat_unchecked(&fscache_n_stores_ok);
 	_leave(" = 0");
 	return 0;
 
@@ -1024,14 +1024,14 @@ nobufs:
 	kfree(op);
 	if (wake_cookie)
 		__fscache_wake_unused_cookie(cookie);
-	fscache_stat(&fscache_n_stores_nobufs);
+	fscache_stat_unchecked(&fscache_n_stores_nobufs);
 	_leave(" = -ENOBUFS");
 	return -ENOBUFS;
 
 nomem_free:
 	kfree(op);
 nomem:
-	fscache_stat(&fscache_n_stores_oom);
+	fscache_stat_unchecked(&fscache_n_stores_oom);
 	_leave(" = -ENOMEM");
 	return -ENOMEM;
 }
@@ -1049,7 +1049,7 @@ void __fscache_uncache_page(struct fscache_cookie *cookie, struct page *page)
 	ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
 	ASSERTCMP(page, !=, NULL);
 
-	fscache_stat(&fscache_n_uncaches);
+	fscache_stat_unchecked(&fscache_n_uncaches);
 
 	/* cache withdrawal may beat us to it */
 	if (!PageFsCache(page))
@@ -1100,7 +1100,7 @@ void fscache_mark_page_cached(struct fscache_retrieval *op, struct page *page)
 	struct fscache_cookie *cookie = op->op.object->cookie;
 
 #ifdef CONFIG_FSCACHE_STATS
-	atomic_inc(&fscache_n_marks);
+	atomic_inc_unchecked(&fscache_n_marks);
 #endif
 
 	_debug("- mark %p{%lx}", page, page->index);
diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c
index 40d13c7..ddf52b9 100644
--- a/fs/fscache/stats.c
+++ b/fs/fscache/stats.c
@@ -18,99 +18,99 @@
 /*
  * operation counters
  */
-atomic_t fscache_n_op_pend;
-atomic_t fscache_n_op_run;
-atomic_t fscache_n_op_enqueue;
-atomic_t fscache_n_op_requeue;
-atomic_t fscache_n_op_deferred_release;
-atomic_t fscache_n_op_release;
-atomic_t fscache_n_op_gc;
-atomic_t fscache_n_op_cancelled;
-atomic_t fscache_n_op_rejected;
+atomic_unchecked_t fscache_n_op_pend;
+atomic_unchecked_t fscache_n_op_run;
+atomic_unchecked_t fscache_n_op_enqueue;
+atomic_unchecked_t fscache_n_op_requeue;
+atomic_unchecked_t fscache_n_op_deferred_release;
+atomic_unchecked_t fscache_n_op_release;
+atomic_unchecked_t fscache_n_op_gc;
+atomic_unchecked_t fscache_n_op_cancelled;
+atomic_unchecked_t fscache_n_op_rejected;
 
-atomic_t fscache_n_attr_changed;
-atomic_t fscache_n_attr_changed_ok;
-atomic_t fscache_n_attr_changed_nobufs;
-atomic_t fscache_n_attr_changed_nomem;
-atomic_t fscache_n_attr_changed_calls;
+atomic_unchecked_t fscache_n_attr_changed;
+atomic_unchecked_t fscache_n_attr_changed_ok;
+atomic_unchecked_t fscache_n_attr_changed_nobufs;
+atomic_unchecked_t fscache_n_attr_changed_nomem;
+atomic_unchecked_t fscache_n_attr_changed_calls;
 
-atomic_t fscache_n_allocs;
-atomic_t fscache_n_allocs_ok;
-atomic_t fscache_n_allocs_wait;
-atomic_t fscache_n_allocs_nobufs;
-atomic_t fscache_n_allocs_intr;
-atomic_t fscache_n_allocs_object_dead;
-atomic_t fscache_n_alloc_ops;
-atomic_t fscache_n_alloc_op_waits;
+atomic_unchecked_t fscache_n_allocs;
+atomic_unchecked_t fscache_n_allocs_ok;
+atomic_unchecked_t fscache_n_allocs_wait;
+atomic_unchecked_t fscache_n_allocs_nobufs;
+atomic_unchecked_t fscache_n_allocs_intr;
+atomic_unchecked_t fscache_n_allocs_object_dead;
+atomic_unchecked_t fscache_n_alloc_ops;
+atomic_unchecked_t fscache_n_alloc_op_waits;
 
-atomic_t fscache_n_retrievals;
-atomic_t fscache_n_retrievals_ok;
-atomic_t fscache_n_retrievals_wait;
-atomic_t fscache_n_retrievals_nodata;
-atomic_t fscache_n_retrievals_nobufs;
-atomic_t fscache_n_retrievals_intr;
-atomic_t fscache_n_retrievals_nomem;
-atomic_t fscache_n_retrievals_object_dead;
-atomic_t fscache_n_retrieval_ops;
-atomic_t fscache_n_retrieval_op_waits;
+atomic_unchecked_t fscache_n_retrievals;
+atomic_unchecked_t fscache_n_retrievals_ok;
+atomic_unchecked_t fscache_n_retrievals_wait;
+atomic_unchecked_t fscache_n_retrievals_nodata;
+atomic_unchecked_t fscache_n_retrievals_nobufs;
+atomic_unchecked_t fscache_n_retrievals_intr;
+atomic_unchecked_t fscache_n_retrievals_nomem;
+atomic_unchecked_t fscache_n_retrievals_object_dead;
+atomic_unchecked_t fscache_n_retrieval_ops;
+atomic_unchecked_t fscache_n_retrieval_op_waits;
 
-atomic_t fscache_n_stores;
-atomic_t fscache_n_stores_ok;
-atomic_t fscache_n_stores_again;
-atomic_t fscache_n_stores_nobufs;
-atomic_t fscache_n_stores_oom;
-atomic_t fscache_n_store_ops;
-atomic_t fscache_n_store_calls;
-atomic_t fscache_n_store_pages;
-atomic_t fscache_n_store_radix_deletes;
-atomic_t fscache_n_store_pages_over_limit;
+atomic_unchecked_t fscache_n_stores;
+atomic_unchecked_t fscache_n_stores_ok;
+atomic_unchecked_t fscache_n_stores_again;
+atomic_unchecked_t fscache_n_stores_nobufs;
+atomic_unchecked_t fscache_n_stores_oom;
+atomic_unchecked_t fscache_n_store_ops;
+atomic_unchecked_t fscache_n_store_calls;
+atomic_unchecked_t fscache_n_store_pages;
+atomic_unchecked_t fscache_n_store_radix_deletes;
+atomic_unchecked_t fscache_n_store_pages_over_limit;
 
-atomic_t fscache_n_store_vmscan_not_storing;
-atomic_t fscache_n_store_vmscan_gone;
-atomic_t fscache_n_store_vmscan_busy;
-atomic_t fscache_n_store_vmscan_cancelled;
-atomic_t fscache_n_store_vmscan_wait;
+atomic_unchecked_t fscache_n_store_vmscan_not_storing;
+atomic_unchecked_t fscache_n_store_vmscan_gone;
+atomic_unchecked_t fscache_n_store_vmscan_busy;
+atomic_unchecked_t fscache_n_store_vmscan_cancelled;
+atomic_unchecked_t fscache_n_store_vmscan_wait;
 
-atomic_t fscache_n_marks;
-atomic_t fscache_n_uncaches;
+atomic_unchecked_t fscache_n_marks;
+atomic_unchecked_t fscache_n_uncaches;
 
-atomic_t fscache_n_acquires;
-atomic_t fscache_n_acquires_null;
-atomic_t fscache_n_acquires_no_cache;
-atomic_t fscache_n_acquires_ok;
-atomic_t fscache_n_acquires_nobufs;
-atomic_t fscache_n_acquires_oom;
+atomic_unchecked_t fscache_n_acquires;
+atomic_unchecked_t fscache_n_acquires_null;
+atomic_unchecked_t fscache_n_acquires_no_cache;
+atomic_unchecked_t fscache_n_acquires_ok;
+atomic_unchecked_t fscache_n_acquires_nobufs;
+atomic_unchecked_t fscache_n_acquires_oom;
 
-atomic_t fscache_n_invalidates;
-atomic_t fscache_n_invalidates_run;
+atomic_unchecked_t fscache_n_invalidates;
+atomic_unchecked_t fscache_n_invalidates_run;
 
-atomic_t fscache_n_updates;
-atomic_t fscache_n_updates_null;
-atomic_t fscache_n_updates_run;
+atomic_unchecked_t fscache_n_updates;
+atomic_unchecked_t fscache_n_updates_null;
+atomic_unchecked_t fscache_n_updates_run;
 
-atomic_t fscache_n_relinquishes;
-atomic_t fscache_n_relinquishes_null;
-atomic_t fscache_n_relinquishes_waitcrt;
-atomic_t fscache_n_relinquishes_retire;
+atomic_unchecked_t fscache_n_relinquishes;
+atomic_unchecked_t fscache_n_relinquishes_null;
+atomic_unchecked_t fscache_n_relinquishes_waitcrt;
+atomic_unchecked_t fscache_n_relinquishes_retire;
 
-atomic_t fscache_n_cookie_index;
-atomic_t fscache_n_cookie_data;
-atomic_t fscache_n_cookie_special;
+atomic_unchecked_t fscache_n_cookie_index;
+atomic_unchecked_t fscache_n_cookie_data;
+atomic_unchecked_t fscache_n_cookie_special;
 
-atomic_t fscache_n_object_alloc;
-atomic_t fscache_n_object_no_alloc;
-atomic_t fscache_n_object_lookups;
-atomic_t fscache_n_object_lookups_negative;
-atomic_t fscache_n_object_lookups_positive;
-atomic_t fscache_n_object_lookups_timed_out;
-atomic_t fscache_n_object_created;
-atomic_t fscache_n_object_avail;
-atomic_t fscache_n_object_dead;
+atomic_unchecked_t fscache_n_object_alloc;
+atomic_unchecked_t fscache_n_object_no_alloc;
+atomic_unchecked_t fscache_n_object_lookups;
+atomic_unchecked_t fscache_n_object_lookups_negative;
+atomic_unchecked_t fscache_n_object_lookups_positive;
+atomic_unchecked_t fscache_n_object_lookups_timed_out;
+atomic_unchecked_t fscache_n_object_created;
+atomic_unchecked_t fscache_n_object_avail;
+atomic_unchecked_t fscache_n_object_dead;
 
-atomic_t fscache_n_checkaux_none;
-atomic_t fscache_n_checkaux_okay;
-atomic_t fscache_n_checkaux_update;
-atomic_t fscache_n_checkaux_obsolete;
+atomic_unchecked_t fscache_n_checkaux_none;
+atomic_unchecked_t fscache_n_checkaux_okay;
+atomic_unchecked_t fscache_n_checkaux_update;
+atomic_unchecked_t fscache_n_checkaux_obsolete;
 
 atomic_t fscache_n_cop_alloc_object;
 atomic_t fscache_n_cop_lookup_object;
@@ -138,118 +138,118 @@ static int fscache_stats_show(struct seq_file *m, void *v)
 	seq_puts(m, "FS-Cache statistics\n");
 
 	seq_printf(m, "Cookies: idx=%u dat=%u spc=%u\n",
-		   atomic_read(&fscache_n_cookie_index),
-		   atomic_read(&fscache_n_cookie_data),
-		   atomic_read(&fscache_n_cookie_special));
+		   atomic_read_unchecked(&fscache_n_cookie_index),
+		   atomic_read_unchecked(&fscache_n_cookie_data),
+		   atomic_read_unchecked(&fscache_n_cookie_special));
 
 	seq_printf(m, "Objects: alc=%u nal=%u avl=%u ded=%u\n",
-		   atomic_read(&fscache_n_object_alloc),
-		   atomic_read(&fscache_n_object_no_alloc),
-		   atomic_read(&fscache_n_object_avail),
-		   atomic_read(&fscache_n_object_dead));
+		   atomic_read_unchecked(&fscache_n_object_alloc),
+		   atomic_read_unchecked(&fscache_n_object_no_alloc),
+		   atomic_read_unchecked(&fscache_n_object_avail),
+		   atomic_read_unchecked(&fscache_n_object_dead));
 	seq_printf(m, "ChkAux : non=%u ok=%u upd=%u obs=%u\n",
-		   atomic_read(&fscache_n_checkaux_none),
-		   atomic_read(&fscache_n_checkaux_okay),
-		   atomic_read(&fscache_n_checkaux_update),
-		   atomic_read(&fscache_n_checkaux_obsolete));
+		   atomic_read_unchecked(&fscache_n_checkaux_none),
+		   atomic_read_unchecked(&fscache_n_checkaux_okay),
+		   atomic_read_unchecked(&fscache_n_checkaux_update),
+		   atomic_read_unchecked(&fscache_n_checkaux_obsolete));
 
 	seq_printf(m, "Pages  : mrk=%u unc=%u\n",
-		   atomic_read(&fscache_n_marks),
-		   atomic_read(&fscache_n_uncaches));
+		   atomic_read_unchecked(&fscache_n_marks),
+		   atomic_read_unchecked(&fscache_n_uncaches));
 
 	seq_printf(m, "Acquire: n=%u nul=%u noc=%u ok=%u nbf=%u"
 		   " oom=%u\n",
-		   atomic_read(&fscache_n_acquires),
-		   atomic_read(&fscache_n_acquires_null),
-		   atomic_read(&fscache_n_acquires_no_cache),
-		   atomic_read(&fscache_n_acquires_ok),
-		   atomic_read(&fscache_n_acquires_nobufs),
-		   atomic_read(&fscache_n_acquires_oom));
+		   atomic_read_unchecked(&fscache_n_acquires),
+		   atomic_read_unchecked(&fscache_n_acquires_null),
+		   atomic_read_unchecked(&fscache_n_acquires_no_cache),
+		   atomic_read_unchecked(&fscache_n_acquires_ok),
+		   atomic_read_unchecked(&fscache_n_acquires_nobufs),
+		   atomic_read_unchecked(&fscache_n_acquires_oom));
 
 	seq_printf(m, "Lookups: n=%u neg=%u pos=%u crt=%u tmo=%u\n",
-		   atomic_read(&fscache_n_object_lookups),
-		   atomic_read(&fscache_n_object_lookups_negative),
-		   atomic_read(&fscache_n_object_lookups_positive),
-		   atomic_read(&fscache_n_object_created),
-		   atomic_read(&fscache_n_object_lookups_timed_out));
+		   atomic_read_unchecked(&fscache_n_object_lookups),
+		   atomic_read_unchecked(&fscache_n_object_lookups_negative),
+		   atomic_read_unchecked(&fscache_n_object_lookups_positive),
+		   atomic_read_unchecked(&fscache_n_object_created),
+		   atomic_read_unchecked(&fscache_n_object_lookups_timed_out));
 
 	seq_printf(m, "Invals : n=%u run=%u\n",
-		   atomic_read(&fscache_n_invalidates),
-		   atomic_read(&fscache_n_invalidates_run));
+		   atomic_read_unchecked(&fscache_n_invalidates),
+		   atomic_read_unchecked(&fscache_n_invalidates_run));
 
 	seq_printf(m, "Updates: n=%u nul=%u run=%u\n",
-		   atomic_read(&fscache_n_updates),
-		   atomic_read(&fscache_n_updates_null),
-		   atomic_read(&fscache_n_updates_run));
+		   atomic_read_unchecked(&fscache_n_updates),
+		   atomic_read_unchecked(&fscache_n_updates_null),
+		   atomic_read_unchecked(&fscache_n_updates_run));
 
 	seq_printf(m, "Relinqs: n=%u nul=%u wcr=%u rtr=%u\n",
-		   atomic_read(&fscache_n_relinquishes),
-		   atomic_read(&fscache_n_relinquishes_null),
-		   atomic_read(&fscache_n_relinquishes_waitcrt),
-		   atomic_read(&fscache_n_relinquishes_retire));
+		   atomic_read_unchecked(&fscache_n_relinquishes),
+		   atomic_read_unchecked(&fscache_n_relinquishes_null),
+		   atomic_read_unchecked(&fscache_n_relinquishes_waitcrt),
+		   atomic_read_unchecked(&fscache_n_relinquishes_retire));
 
 	seq_printf(m, "AttrChg: n=%u ok=%u nbf=%u oom=%u run=%u\n",
-		   atomic_read(&fscache_n_attr_changed),
-		   atomic_read(&fscache_n_attr_changed_ok),
-		   atomic_read(&fscache_n_attr_changed_nobufs),
-		   atomic_read(&fscache_n_attr_changed_nomem),
-		   atomic_read(&fscache_n_attr_changed_calls));
+		   atomic_read_unchecked(&fscache_n_attr_changed),
+		   atomic_read_unchecked(&fscache_n_attr_changed_ok),
+		   atomic_read_unchecked(&fscache_n_attr_changed_nobufs),
+		   atomic_read_unchecked(&fscache_n_attr_changed_nomem),
+		   atomic_read_unchecked(&fscache_n_attr_changed_calls));
 
 	seq_printf(m, "Allocs : n=%u ok=%u wt=%u nbf=%u int=%u\n",
-		   atomic_read(&fscache_n_allocs),
-		   atomic_read(&fscache_n_allocs_ok),
-		   atomic_read(&fscache_n_allocs_wait),
-		   atomic_read(&fscache_n_allocs_nobufs),
-		   atomic_read(&fscache_n_allocs_intr));
+		   atomic_read_unchecked(&fscache_n_allocs),
+		   atomic_read_unchecked(&fscache_n_allocs_ok),
+		   atomic_read_unchecked(&fscache_n_allocs_wait),
+		   atomic_read_unchecked(&fscache_n_allocs_nobufs),
+		   atomic_read_unchecked(&fscache_n_allocs_intr));
 	seq_printf(m, "Allocs : ops=%u owt=%u abt=%u\n",
-		   atomic_read(&fscache_n_alloc_ops),
-		   atomic_read(&fscache_n_alloc_op_waits),
-		   atomic_read(&fscache_n_allocs_object_dead));
+		   atomic_read_unchecked(&fscache_n_alloc_ops),
+		   atomic_read_unchecked(&fscache_n_alloc_op_waits),
+		   atomic_read_unchecked(&fscache_n_allocs_object_dead));
 
 	seq_printf(m, "Retrvls: n=%u ok=%u wt=%u nod=%u nbf=%u"
 		   " int=%u oom=%u\n",
-		   atomic_read(&fscache_n_retrievals),
-		   atomic_read(&fscache_n_retrievals_ok),
-		   atomic_read(&fscache_n_retrievals_wait),
-		   atomic_read(&fscache_n_retrievals_nodata),
-		   atomic_read(&fscache_n_retrievals_nobufs),
-		   atomic_read(&fscache_n_retrievals_intr),
-		   atomic_read(&fscache_n_retrievals_nomem));
+		   atomic_read_unchecked(&fscache_n_retrievals),
+		   atomic_read_unchecked(&fscache_n_retrievals_ok),
+		   atomic_read_unchecked(&fscache_n_retrievals_wait),
+		   atomic_read_unchecked(&fscache_n_retrievals_nodata),
+		   atomic_read_unchecked(&fscache_n_retrievals_nobufs),
+		   atomic_read_unchecked(&fscache_n_retrievals_intr),
+		   atomic_read_unchecked(&fscache_n_retrievals_nomem));
 	seq_printf(m, "Retrvls: ops=%u owt=%u abt=%u\n",
-		   atomic_read(&fscache_n_retrieval_ops),
-		   atomic_read(&fscache_n_retrieval_op_waits),
-		   atomic_read(&fscache_n_retrievals_object_dead));
+		   atomic_read_unchecked(&fscache_n_retrieval_ops),
+		   atomic_read_unchecked(&fscache_n_retrieval_op_waits),
+		   atomic_read_unchecked(&fscache_n_retrievals_object_dead));
 
 	seq_printf(m, "Stores : n=%u ok=%u agn=%u nbf=%u oom=%u\n",
-		   atomic_read(&fscache_n_stores),
-		   atomic_read(&fscache_n_stores_ok),
-		   atomic_read(&fscache_n_stores_again),
-		   atomic_read(&fscache_n_stores_nobufs),
-		   atomic_read(&fscache_n_stores_oom));
+		   atomic_read_unchecked(&fscache_n_stores),
+		   atomic_read_unchecked(&fscache_n_stores_ok),
+		   atomic_read_unchecked(&fscache_n_stores_again),
+		   atomic_read_unchecked(&fscache_n_stores_nobufs),
+		   atomic_read_unchecked(&fscache_n_stores_oom));
 	seq_printf(m, "Stores : ops=%u run=%u pgs=%u rxd=%u olm=%u\n",
-		   atomic_read(&fscache_n_store_ops),
-		   atomic_read(&fscache_n_store_calls),
-		   atomic_read(&fscache_n_store_pages),
-		   atomic_read(&fscache_n_store_radix_deletes),
-		   atomic_read(&fscache_n_store_pages_over_limit));
+		   atomic_read_unchecked(&fscache_n_store_ops),
+		   atomic_read_unchecked(&fscache_n_store_calls),
+		   atomic_read_unchecked(&fscache_n_store_pages),
+		   atomic_read_unchecked(&fscache_n_store_radix_deletes),
+		   atomic_read_unchecked(&fscache_n_store_pages_over_limit));
 
 	seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u wt=%u\n",
-		   atomic_read(&fscache_n_store_vmscan_not_storing),
-		   atomic_read(&fscache_n_store_vmscan_gone),
-		   atomic_read(&fscache_n_store_vmscan_busy),
-		   atomic_read(&fscache_n_store_vmscan_cancelled),
-		   atomic_read(&fscache_n_store_vmscan_wait));
+		   atomic_read_unchecked(&fscache_n_store_vmscan_not_storing),
+		   atomic_read_unchecked(&fscache_n_store_vmscan_gone),
+		   atomic_read_unchecked(&fscache_n_store_vmscan_busy),
+		   atomic_read_unchecked(&fscache_n_store_vmscan_cancelled),
+		   atomic_read_unchecked(&fscache_n_store_vmscan_wait));
 
 	seq_printf(m, "Ops    : pend=%u run=%u enq=%u can=%u rej=%u\n",
-		   atomic_read(&fscache_n_op_pend),
-		   atomic_read(&fscache_n_op_run),
-		   atomic_read(&fscache_n_op_enqueue),
-		   atomic_read(&fscache_n_op_cancelled),
-		   atomic_read(&fscache_n_op_rejected));
+		   atomic_read_unchecked(&fscache_n_op_pend),
+		   atomic_read_unchecked(&fscache_n_op_run),
+		   atomic_read_unchecked(&fscache_n_op_enqueue),
+		   atomic_read_unchecked(&fscache_n_op_cancelled),
+		   atomic_read_unchecked(&fscache_n_op_rejected));
 	seq_printf(m, "Ops    : dfr=%u rel=%u gc=%u\n",
-		   atomic_read(&fscache_n_op_deferred_release),
-		   atomic_read(&fscache_n_op_release),
-		   atomic_read(&fscache_n_op_gc));
+		   atomic_read_unchecked(&fscache_n_op_deferred_release),
+		   atomic_read_unchecked(&fscache_n_op_release),
+		   atomic_read_unchecked(&fscache_n_op_gc));
 
 	seq_printf(m, "CacheOp: alo=%d luo=%d luc=%d gro=%d\n",
 		   atomic_read(&fscache_n_cop_alloc_object),
diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
index 966ace8..030a03a 100644
--- a/fs/fuse/cuse.c
+++ b/fs/fuse/cuse.c
@@ -611,10 +611,12 @@ static int __init cuse_init(void)
 		INIT_LIST_HEAD(&cuse_conntbl[i]);
 
 	/* inherit and extend fuse_dev_operations */
-	cuse_channel_fops		= fuse_dev_operations;
-	cuse_channel_fops.owner		= THIS_MODULE;
-	cuse_channel_fops.open		= cuse_channel_open;
-	cuse_channel_fops.release	= cuse_channel_release;
+	pax_open_kernel();
+	memcpy((void *)&cuse_channel_fops, &fuse_dev_operations, sizeof(fuse_dev_operations));
+	*(void **)&cuse_channel_fops.owner	= THIS_MODULE;
+	*(void **)&cuse_channel_fops.open	= cuse_channel_open;
+	*(void **)&cuse_channel_fops.release	= cuse_channel_release;
+	pax_close_kernel();
 
 	cuse_class = class_create(THIS_MODULE, "cuse");
 	if (IS_ERR(cuse_class))
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index ca88731..8e9c55d 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -1318,7 +1318,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
 	ret = 0;
 	pipe_lock(pipe);
 
-	if (!pipe->readers) {
+	if (!atomic_read(&pipe->readers)) {
 		send_sig(SIGPIPE, current, 0);
 		if (!ret)
 			ret = -EPIPE;
@@ -1347,7 +1347,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
 		page_nr++;
 		ret += buf->len;
 
-		if (pipe->files)
+		if (atomic_read(&pipe->files))
 			do_wakeup = 1;
 	}
 
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 0c60482..025724f 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -1485,7 +1485,7 @@ static char *read_link(struct dentry *dentry)
 	return link;
 }
 
-static void free_link(char *link)
+static void free_link(const char *link)
 {
 	if (!IS_ERR(link))
 		free_page((unsigned long) link);
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index bb529f3..454c253 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -898,7 +898,7 @@ static void *hostfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 
 static void hostfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
 {
-	char *s = nd_get_link(nd);
+	const char *s = nd_get_link(nd);
 	if (!IS_ERR(s))
 		__putname(s);
 }
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index 1e2872b..7aea000 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -154,6 +154,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
 	struct hstate *h = hstate_file(file);
+	unsigned long offset = gr_rand_threadstack_offset(mm, file, flags);
 	struct vm_unmapped_area_info info;
 
 	if (len & ~huge_page_mask(h))
@@ -167,17 +168,26 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
 		return addr;
 	}
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = ALIGN(addr, huge_page_size(h));
 		vma = find_vma(mm, addr);
-		if (TASK_SIZE - len >= addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
 	info.flags = 0;
 	info.length = len;
 	info.low_limit = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		info.low_limit += mm->delta_mmap;
+#endif
+
 	info.high_limit = TASK_SIZE;
 	info.align_mask = PAGE_MASK & ~huge_page_mask(h);
 	info.align_offset = 0;
@@ -919,7 +929,7 @@ static struct file_system_type hugetlbfs_fs_type = {
 };
 MODULE_ALIAS_FS("hugetlbfs");
 
-static struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
+struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
 
 static int can_do_hugetlb_shm(void)
 {
diff --git a/fs/inode.c b/fs/inode.c
index 6eecb7f..abec305 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -839,16 +839,20 @@ unsigned int get_next_ino(void)
 	unsigned int *p = &get_cpu_var(last_ino);
 	unsigned int res = *p;
 
+start:
+
 #ifdef CONFIG_SMP
 	if (unlikely((res & (LAST_INO_BATCH-1)) == 0)) {
-		static atomic_t shared_last_ino;
-		int next = atomic_add_return(LAST_INO_BATCH, &shared_last_ino);
+		static atomic_unchecked_t shared_last_ino;
+		int next = atomic_add_return_unchecked(LAST_INO_BATCH, &shared_last_ino);
 
 		res = next - LAST_INO_BATCH;
 	}
 #endif
 
-	*p = ++res;
+	if (unlikely(!++res))
+		goto start;	/* never zero */
+	*p = res;
 	put_cpu_var(last_ino);
 	return res;
 }
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index 4a6cf28..d3a29d3 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -452,7 +452,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
 		struct jffs2_unknown_node marker = {
 			.magic =	cpu_to_je16(JFFS2_MAGIC_BITMASK),
 			.nodetype =	cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
-			.totlen =	cpu_to_je32(c->cleanmarker_size)
+			.totlen =	cpu_to_je32(c->cleanmarker_size),
+			.hdr_crc =	cpu_to_je32(0)
 		};
 
 		jffs2_prealloc_raw_node_refs(c, jeb, 1);
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index a6597d6..41b30ec 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -1023,7 +1023,8 @@ static const struct jffs2_unknown_node oob_cleanmarker =
 {
 	.magic = constant_cpu_to_je16(JFFS2_MAGIC_BITMASK),
 	.nodetype = constant_cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
-	.totlen = constant_cpu_to_je32(8)
+	.totlen = constant_cpu_to_je32(8),
+	.hdr_crc = constant_cpu_to_je32(0)
 };
 
 /*
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index adf8cb0..bb935fa 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -893,7 +893,7 @@ static int __init init_jfs_fs(void)
 
 	jfs_inode_cachep =
 	    kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0,
-			    SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD,
+			    SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_USERCOPY,
 			    init_once);
 	if (jfs_inode_cachep == NULL)
 		return -ENOMEM;
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index a693f5b..82276a1 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -182,7 +182,7 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
  *
  *	Returns 31 bit hash of ns + name (so it fits in an off_t )
  */
-static unsigned int kernfs_name_hash(const char *name, const void *ns)
+static unsigned int kernfs_name_hash(const unsigned char *name, const void *ns)
 {
 	unsigned long hash = init_name_hash();
 	unsigned int len = strlen(name);
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index d895b4b..0b8af77 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -34,7 +34,7 @@ static DEFINE_MUTEX(kernfs_open_file_mutex);
 
 struct kernfs_open_node {
 	atomic_t		refcnt;
-	atomic_t		event;
+	atomic_unchecked_t	event;
 	wait_queue_head_t	poll;
 	struct list_head	files; /* goes through kernfs_open_file.list */
 };
@@ -163,7 +163,7 @@ static int kernfs_seq_show(struct seq_file *sf, void *v)
 {
 	struct kernfs_open_file *of = sf->private;
 
-	of->event = atomic_read(&of->kn->attr.open->event);
+	of->event = atomic_read_unchecked(&of->kn->attr.open->event);
 
 	return of->kn->attr.ops->seq_show(sf, v);
 }
@@ -375,12 +375,12 @@ static int kernfs_vma_page_mkwrite(struct vm_area_struct *vma,
 	return ret;
 }
 
-static int kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr,
-			     void *buf, int len, int write)
+static ssize_t kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr,
+			     void *buf, size_t len, int write)
 {
 	struct file *file = vma->vm_file;
 	struct kernfs_open_file *of = kernfs_of(file);
-	int ret;
+	ssize_t ret;
 
 	if (!of->vm_ops)
 		return -EINVAL;
@@ -581,7 +581,7 @@ static int kernfs_get_open_node(struct kernfs_node *kn,
 		return -ENOMEM;
 
 	atomic_set(&new_on->refcnt, 0);
-	atomic_set(&new_on->event, 1);
+	atomic_set_unchecked(&new_on->event, 1);
 	init_waitqueue_head(&new_on->poll);
 	INIT_LIST_HEAD(&new_on->files);
 	goto retry;
@@ -787,7 +787,7 @@ static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait)
 
 	kernfs_put_active(kn);
 
-	if (of->event != atomic_read(&on->event))
+	if (of->event != atomic_read_unchecked(&on->event))
 		goto trigger;
 
 	return DEFAULT_POLLMASK;
@@ -818,7 +818,7 @@ repeat:
 
 	on = kn->attr.open;
 	if (on) {
-		atomic_inc(&on->event);
+		atomic_inc_unchecked(&on->event);
 		wake_up_interruptible(&on->poll);
 	}
 
diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index 8a19889..4c3069a 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -128,7 +128,7 @@ static void *kernfs_iop_follow_link(struct dentry *dentry, struct nameidata *nd)
 static void kernfs_iop_put_link(struct dentry *dentry, struct nameidata *nd,
 				void *cookie)
 {
-	char *page = nd_get_link(nd);
+	const char *page = nd_get_link(nd);
 	if (!IS_ERR(page))
 		free_page((unsigned long)page);
 }
diff --git a/fs/libfs.c b/fs/libfs.c
index 88e3e00..979c262 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -160,6 +160,9 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
 
 	for (p = q->next; p != &dentry->d_subdirs; p = p->next) {
 		struct dentry *next = list_entry(p, struct dentry, d_u.d_child);
+		char d_name[sizeof(next->d_iname)];
+		const unsigned char *name;
+
 		spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
 		if (!simple_positive(next)) {
 			spin_unlock(&next->d_lock);
@@ -168,7 +171,12 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
 
 		spin_unlock(&next->d_lock);
 		spin_unlock(&dentry->d_lock);
-		if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
+		name = next->d_name.name;
+		if (name == next->d_iname) {
+			memcpy(d_name, name, next->d_name.len);
+			name = d_name;
+		}
+		if (!dir_emit(ctx, name, next->d_name.len,
 			      next->d_inode->i_ino, dt_type(next->d_inode)))
 			return 0;
 		spin_lock(&dentry->d_lock);
@@ -1027,7 +1035,7 @@ EXPORT_SYMBOL(noop_fsync);
 void kfree_put_link(struct dentry *dentry, struct nameidata *nd,
 				void *cookie)
 {
-	char *s = nd_get_link(nd);
+	const char *s = nd_get_link(nd);
 	if (!IS_ERR(s))
 		kfree(s);
 }
diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
index acd3947..1f896e2 100644
--- a/fs/lockd/clntproc.c
+++ b/fs/lockd/clntproc.c
@@ -36,11 +36,11 @@ static const struct rpc_call_ops nlmclnt_cancel_ops;
 /*
  * Cookie counter for NLM requests
  */
-static atomic_t	nlm_cookie = ATOMIC_INIT(0x1234);
+static atomic_unchecked_t	nlm_cookie = ATOMIC_INIT(0x1234);
 
 void nlmclnt_next_cookie(struct nlm_cookie *c)
 {
-	u32	cookie = atomic_inc_return(&nlm_cookie);
+	u32	cookie = atomic_inc_return_unchecked(&nlm_cookie);
 
 	memcpy(c->data, &cookie, 4);
 	c->len=4;
diff --git a/fs/locks.c b/fs/locks.c
index 717fbc4..74628c3 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -2327,7 +2327,7 @@ void locks_remove_file(struct file *filp)
 	locks_remove_posix(filp, (fl_owner_t)filp);
 
 	if (filp->f_op->flock) {
-		struct file_lock fl = {
+		struct file_lock flock = {
 			.fl_owner = (fl_owner_t)filp,
 			.fl_pid = current->tgid,
 			.fl_file = filp,
@@ -2335,9 +2335,9 @@ void locks_remove_file(struct file *filp)
 			.fl_type = F_UNLCK,
 			.fl_end = OFFSET_MAX,
 		};
-		filp->f_op->flock(filp, F_SETLKW, &fl);
-		if (fl.fl_ops && fl.fl_ops->fl_release_private)
-			fl.fl_ops->fl_release_private(&fl);
+		filp->f_op->flock(filp, F_SETLKW, &flock);
+		if (flock.fl_ops && flock.fl_ops->fl_release_private)
+			flock.fl_ops->fl_release_private(&flock);
 	}
 
 	spin_lock(&inode->i_lock);
diff --git a/fs/mount.h b/fs/mount.h
index d55297f..f5b28c5 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -11,7 +11,7 @@ struct mnt_namespace {
 	u64			seq;	/* Sequence number to prevent loops */
 	wait_queue_head_t poll;
 	u64 event;
-};
+} __randomize_layout;
 
 struct mnt_pcp {
 	int mnt_count;
@@ -57,7 +57,7 @@ struct mount {
 	int mnt_expiry_mark;		/* true if marked for expiry */
 	int mnt_pinned;
 	struct path mnt_ex_mountpoint;
-};
+} __randomize_layout;
 
 #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
 
diff --git a/fs/namei.c b/fs/namei.c
index 17ca8b8..2de9500 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -331,17 +331,32 @@ int generic_permission(struct inode *inode, int mask)
 	if (ret != -EACCES)
 		return ret;
 
+#ifdef CONFIG_GRKERNSEC
+	/* we'll block if we have to log due to a denied capability use */
+	if (mask & MAY_NOT_BLOCK)
+		return -ECHILD;
+#endif
+
 	if (S_ISDIR(inode->i_mode)) {
 		/* DACs are overridable for directories */
-		if (capable_wrt_inode_uidgid(inode, CAP_DAC_OVERRIDE))
-			return 0;
 		if (!(mask & MAY_WRITE))
-			if (capable_wrt_inode_uidgid(inode,
-						     CAP_DAC_READ_SEARCH))
+			if (capable_wrt_inode_uidgid_nolog(inode, CAP_DAC_OVERRIDE) ||
+			    capable_wrt_inode_uidgid(inode, CAP_DAC_READ_SEARCH))
 				return 0;
+		if (capable_wrt_inode_uidgid(inode, CAP_DAC_OVERRIDE))
+			return 0;
 		return -EACCES;
 	}
 	/*
+	 * Searching includes executable on directories, else just read.
+	 */
+	mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
+	if (mask == MAY_READ)
+		if (capable_wrt_inode_uidgid_nolog(inode, CAP_DAC_OVERRIDE) ||
+		    capable_wrt_inode_uidgid(inode, CAP_DAC_READ_SEARCH))
+			return 0;
+
+	/*
 	 * Read/write DACs are always overridable.
 	 * Executable DACs are overridable when there is
 	 * at least one exec bit set.
@@ -350,14 +365,6 @@ int generic_permission(struct inode *inode, int mask)
 		if (capable_wrt_inode_uidgid(inode, CAP_DAC_OVERRIDE))
 			return 0;
 
-	/*
-	 * Searching includes executable on directories, else just read.
-	 */
-	mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
-	if (mask == MAY_READ)
-		if (capable_wrt_inode_uidgid(inode, CAP_DAC_READ_SEARCH))
-			return 0;
-
 	return -EACCES;
 }
 EXPORT_SYMBOL(generic_permission);
@@ -825,7 +832,7 @@ follow_link(struct path *link, struct nameidata *nd, void **p)
 {
 	struct dentry *dentry = link->dentry;
 	int error;
-	char *s;
+	const char *s;
 
 	BUG_ON(nd->flags & LOOKUP_RCU);
 
@@ -846,6 +853,12 @@ follow_link(struct path *link, struct nameidata *nd, void **p)
 	if (error)
 		goto out_put_nd_path;
 
+	if (gr_handle_follow_link(dentry->d_parent->d_inode,
+				  dentry->d_inode, dentry, nd->path.mnt)) {
+		error = -EACCES;
+		goto out_put_nd_path;
+	}	
+
 	nd->last_type = LAST_BIND;
 	*p = dentry->d_inode->i_op->follow_link(dentry, nd);
 	error = PTR_ERR(*p);
@@ -1597,6 +1610,8 @@ static inline int nested_symlink(struct path *path, struct nameidata *nd)
 		if (res)
 			break;
 		res = walk_component(nd, path, LOOKUP_FOLLOW);
+		if (res >= 0 && gr_handle_symlink_owner(&link, nd->inode))
+			res = -EACCES;
 		put_link(nd, &link, cookie);
 	} while (res > 0);
 
@@ -1669,7 +1684,7 @@ EXPORT_SYMBOL(full_name_hash);
 static inline unsigned long hash_name(const char *name, unsigned int *hashp)
 {
 	unsigned long a, b, adata, bdata, mask, hash, len;
-	const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
+	static const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
 
 	hash = a = 0;
 	len = -sizeof(unsigned long);
@@ -1953,6 +1968,8 @@ static int path_lookupat(int dfd, const char *name,
 			if (err)
 				break;
 			err = lookup_last(nd, &path);
+			if (!err && gr_handle_symlink_owner(&link, nd->inode))
+				err = -EACCES;
 			put_link(nd, &link, cookie);
 		}
 	}
@@ -1960,6 +1977,13 @@ static int path_lookupat(int dfd, const char *name,
 	if (!err)
 		err = complete_walk(nd);
 
+	if (!err && !(nd->flags & LOOKUP_PARENT)) {
+		if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) {
+			path_put(&nd->path);
+			err = -ENOENT;
+		}
+	}
+
 	if (!err && nd->flags & LOOKUP_DIRECTORY) {
 		if (!d_can_lookup(nd->path.dentry)) {
 			path_put(&nd->path);
@@ -1987,8 +2011,15 @@ static int filename_lookup(int dfd, struct filename *name,
 		retval = path_lookupat(dfd, name->name,
 						flags | LOOKUP_REVAL, nd);
 
-	if (likely(!retval))
+	if (likely(!retval)) {
 		audit_inode(name, nd->path.dentry, flags & LOOKUP_PARENT);
+		if (name->name[0] != '/' && nd->path.dentry && nd->inode) {
+			if (!gr_chroot_fchdir(nd->path.dentry, nd->path.mnt)) {
+				path_put(&nd->path);
+				return -ENOENT;
+			}
+		}
+	}
 	return retval;
 }
 
@@ -2570,6 +2601,13 @@ static int may_open(struct path *path, int acc_mode, int flag)
 	if (flag & O_NOATIME && !inode_owner_or_capable(inode))
 		return -EPERM;
 
+	if (gr_handle_rofs_blockwrite(dentry, path->mnt, acc_mode))
+		return -EPERM;
+	if (gr_handle_rawio(inode))
+		return -EPERM;
+	if (!gr_acl_handle_open(dentry, path->mnt, acc_mode))
+		return -EACCES;
+
 	return 0;
 }
 
@@ -2801,7 +2839,7 @@ looked_up:
  * cleared otherwise prior to returning.
  */
 static int lookup_open(struct nameidata *nd, struct path *path,
-			struct file *file,
+			struct path *link, struct file *file,
 			const struct open_flags *op,
 			bool got_write, int *opened)
 {
@@ -2836,6 +2874,17 @@ static int lookup_open(struct nameidata *nd, struct path *path,
 	/* Negative dentry, just create the file */
 	if (!dentry->d_inode && (op->open_flag & O_CREAT)) {
 		umode_t mode = op->mode;
+
+		if (link && gr_handle_symlink_owner(link, dir->d_inode)) {
+			error = -EACCES;
+			goto out_dput;
+		}
+
+		if (!gr_acl_handle_creat(dentry, dir, nd->path.mnt, op->open_flag, op->acc_mode, mode)) {
+			error = -EACCES;
+			goto out_dput;
+		}
+
 		if (!IS_POSIXACL(dir->d_inode))
 			mode &= ~current_umask();
 		/*
@@ -2857,6 +2906,8 @@ static int lookup_open(struct nameidata *nd, struct path *path,
 				   nd->flags & LOOKUP_EXCL);
 		if (error)
 			goto out_dput;
+		else
+			gr_handle_create(dentry, nd->path.mnt);
 	}
 out_no_open:
 	path->dentry = dentry;
@@ -2871,7 +2922,7 @@ out_dput:
 /*
  * Handle the last step of open()
  */
-static int do_last(struct nameidata *nd, struct path *path,
+static int do_last(struct nameidata *nd, struct path *path, struct path *link,
 		   struct file *file, const struct open_flags *op,
 		   int *opened, struct filename *name)
 {
@@ -2921,6 +2972,15 @@ static int do_last(struct nameidata *nd, struct path *path,
 		if (error)
 			return error;
 
+		if (!gr_acl_handle_hidden_file(dir, nd->path.mnt)) {
+			error = -ENOENT;
+			goto out;
+		}
+		if (link && gr_handle_symlink_owner(link, nd->inode)) {
+			error = -EACCES;
+			goto out;
+		}
+
 		audit_inode(name, dir, LOOKUP_PARENT);
 		error = -EISDIR;
 		/* trailing slashes? */
@@ -2940,7 +3000,7 @@ retry_lookup:
 		 */
 	}
 	mutex_lock(&dir->d_inode->i_mutex);
-	error = lookup_open(nd, path, file, op, got_write, opened);
+	error = lookup_open(nd, path, link, file, op, got_write, opened);
 	mutex_unlock(&dir->d_inode->i_mutex);
 
 	if (error <= 0) {
@@ -2964,11 +3024,28 @@ retry_lookup:
 		goto finish_open_created;
 	}
 
+	if (!gr_acl_handle_hidden_file(path->dentry, nd->path.mnt)) {
+		error = -ENOENT;
+		goto exit_dput;
+	}
+	if (link && gr_handle_symlink_owner(link, path->dentry->d_inode)) {
+		error = -EACCES;
+		goto exit_dput;
+	}
+
 	/*
 	 * create/update audit record if it already exists.
 	 */
-	if (d_is_positive(path->dentry))
+	if (d_is_positive(path->dentry)) {
+		/* only check if O_CREAT is specified, all other checks need to go
+		   into may_open */
+		if (gr_handle_fifo(path->dentry, path->mnt, dir, open_flag, acc_mode)) {
+			error = -EACCES;
+			goto exit_dput;
+		}
+
 		audit_inode(name, path->dentry, 0);
+	}
 
 	/*
 	 * If atomic_open() acquired write access it is dropped now due to
@@ -3009,6 +3086,11 @@ finish_lookup:
 			}
 		}
 		BUG_ON(inode != path->dentry->d_inode);
+		/* if we're resolving a symlink to another symlink */
+		if (link && gr_handle_symlink_owner(link, inode)) {
+			error = -EACCES;
+			goto out;
+		}
 		return 1;
 	}
 
@@ -3018,7 +3100,6 @@ finish_lookup:
 		save_parent.dentry = nd->path.dentry;
 		save_parent.mnt = mntget(path->mnt);
 		nd->path.dentry = path->dentry;
-
 	}
 	nd->inode = inode;
 	/* Why this, you ask?  _Now_ we might have grown LOOKUP_JUMPED... */
@@ -3028,7 +3109,18 @@ finish_open:
 		path_put(&save_parent);
 		return error;
 	}
+
+	if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) {
+		error = -ENOENT;
+		goto out;
+	}
+	if (link && gr_handle_symlink_owner(link, nd->inode)) {
+		error = -EACCES;
+		goto out;
+	}
+
 	audit_inode(name, nd->path.dentry, 0);
+
 	error = -EISDIR;
 	if ((open_flag & O_CREAT) && d_is_dir(nd->path.dentry))
 		goto out;
@@ -3191,7 +3283,7 @@ static struct file *path_openat(int dfd, struct filename *pathname,
 	if (unlikely(error))
 		goto out;
 
-	error = do_last(nd, &path, file, op, &opened, pathname);
+	error = do_last(nd, &path, NULL, file, op, &opened, pathname);
 	while (unlikely(error > 0)) { /* trailing symlink */
 		struct path link = path;
 		void *cookie;
@@ -3209,7 +3301,7 @@ static struct file *path_openat(int dfd, struct filename *pathname,
 		error = follow_link(&link, nd, &cookie);
 		if (unlikely(error))
 			break;
-		error = do_last(nd, &path, file, op, &opened, pathname);
+		error = do_last(nd, &path, &link, file, op, &opened, pathname);
 		put_link(nd, &link, cookie);
 	}
 out:
@@ -3309,9 +3401,11 @@ struct dentry *kern_path_create(int dfd, const char *pathname,
 		goto unlock;
 
 	error = -EEXIST;
-	if (d_is_positive(dentry))
+	if (d_is_positive(dentry)) {
+		if (!gr_acl_handle_hidden_file(dentry, nd.path.mnt))
+			error = -ENOENT;
 		goto fail;
-
+	}
 	/*
 	 * Special case - lookup gave negative, but... we had foo/bar/
 	 * From the vfs_mknod() POV we just have a negative dentry -
@@ -3363,6 +3457,20 @@ struct dentry *user_path_create(int dfd, const char __user *pathname,
 }
 EXPORT_SYMBOL(user_path_create);
 
+static struct dentry *user_path_create_with_name(int dfd, const char __user *pathname, struct path *path, struct filename **to, unsigned int lookup_flags)
+{
+	struct filename *tmp = getname(pathname);
+	struct dentry *res;
+	if (IS_ERR(tmp))
+		return ERR_CAST(tmp);
+	res = kern_path_create(dfd, tmp->name, path, lookup_flags);
+	if (IS_ERR(res))
+		putname(tmp);
+	else
+		*to = tmp;
+	return res;
+}
+
 int vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 {
 	int error = may_create(dir, dentry);
@@ -3426,6 +3534,17 @@ retry:
 
 	if (!IS_POSIXACL(path.dentry->d_inode))
 		mode &= ~current_umask();
+
+	if (gr_handle_chroot_mknod(dentry, path.mnt, mode)) {
+		error = -EPERM;
+		goto out;
+	}
+
+	if (!gr_acl_handle_mknod(dentry, path.dentry, path.mnt, mode)) {
+		error = -EACCES;
+		goto out;
+	}
+
 	error = security_path_mknod(&path, dentry, mode, dev);
 	if (error)
 		goto out;
@@ -3442,6 +3561,8 @@ retry:
 			break;
 	}
 out:
+	if (!error)
+		gr_handle_create(dentry, path.mnt);
 	done_path_create(&path, dentry);
 	if (retry_estale(error, lookup_flags)) {
 		lookup_flags |= LOOKUP_REVAL;
@@ -3495,9 +3616,16 @@ retry:
 
 	if (!IS_POSIXACL(path.dentry->d_inode))
 		mode &= ~current_umask();
+	if (!gr_acl_handle_mkdir(dentry, path.dentry, path.mnt)) {
+		error = -EACCES;
+		goto out;
+	}
 	error = security_path_mkdir(&path, dentry, mode);
 	if (!error)
 		error = vfs_mkdir(path.dentry->d_inode, dentry, mode);
+	if (!error)
+		gr_handle_create(dentry, path.mnt);
+out:
 	done_path_create(&path, dentry);
 	if (retry_estale(error, lookup_flags)) {
 		lookup_flags |= LOOKUP_REVAL;
@@ -3580,6 +3708,8 @@ static long do_rmdir(int dfd, const char __user *pathname)
 	struct filename *name;
 	struct dentry *dentry;
 	struct nameidata nd;
+	ino_t saved_ino = 0;
+	dev_t saved_dev = 0;
 	unsigned int lookup_flags = 0;
 retry:
 	name = user_path_parent(dfd, pathname, &nd, lookup_flags);
@@ -3612,10 +3742,21 @@ retry:
 		error = -ENOENT;
 		goto exit3;
 	}
+
+	saved_ino = dentry->d_inode->i_ino;
+	saved_dev = gr_get_dev_from_dentry(dentry);
+
+	if (!gr_acl_handle_rmdir(dentry, nd.path.mnt)) {
+		error = -EACCES;
+		goto exit3;
+	}
+
 	error = security_path_rmdir(&nd.path, dentry);
 	if (error)
 		goto exit3;
 	error = vfs_rmdir(nd.path.dentry->d_inode, dentry);
+	if (!error && (saved_dev || saved_ino))
+		gr_handle_delete(saved_ino, saved_dev);
 exit3:
 	dput(dentry);
 exit2:
@@ -3706,6 +3847,8 @@ static long do_unlinkat(int dfd, const char __user *pathname)
 	struct nameidata nd;
 	struct inode *inode = NULL;
 	struct inode *delegated_inode = NULL;
+	ino_t saved_ino = 0;
+	dev_t saved_dev = 0;
 	unsigned int lookup_flags = 0;
 retry:
 	name = user_path_parent(dfd, pathname, &nd, lookup_flags);
@@ -3732,10 +3875,22 @@ retry_deleg:
 		if (d_is_negative(dentry))
 			goto slashes;
 		ihold(inode);
+
+		if (inode->i_nlink <= 1) {
+			saved_ino = inode->i_ino;
+			saved_dev = gr_get_dev_from_dentry(dentry);
+		}
+		if (!gr_acl_handle_unlink(dentry, nd.path.mnt)) {
+			error = -EACCES;
+			goto exit2;
+		}
+
 		error = security_path_unlink(&nd.path, dentry);
 		if (error)
 			goto exit2;
 		error = vfs_unlink(nd.path.dentry->d_inode, dentry, &delegated_inode);
+		if (!error && (saved_ino || saved_dev))
+			gr_handle_delete(saved_ino, saved_dev);
 exit2:
 		dput(dentry);
 	}
@@ -3824,9 +3979,17 @@ retry:
 	if (IS_ERR(dentry))
 		goto out_putname;
 
+	if (!gr_acl_handle_symlink(dentry, path.dentry, path.mnt, from)) {
+		error = -EACCES;
+		goto out;
+	}
+
 	error = security_path_symlink(&path, dentry, from->name);
 	if (!error)
 		error = vfs_symlink(path.dentry->d_inode, dentry, from->name);
+	if (!error)
+		gr_handle_create(dentry, path.mnt);
+out:
 	done_path_create(&path, dentry);
 	if (retry_estale(error, lookup_flags)) {
 		lookup_flags |= LOOKUP_REVAL;
@@ -3930,6 +4093,7 @@ SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname,
 	struct dentry *new_dentry;
 	struct path old_path, new_path;
 	struct inode *delegated_inode = NULL;
+	struct filename *to = NULL;
 	int how = 0;
 	int error;
 
@@ -3953,7 +4117,7 @@ retry:
 	if (error)
 		return error;
 
-	new_dentry = user_path_create(newdfd, newname, &new_path,
+	new_dentry = user_path_create_with_name(newdfd, newname, &new_path, &to,
 					(how & LOOKUP_REVAL));
 	error = PTR_ERR(new_dentry);
 	if (IS_ERR(new_dentry))
@@ -3965,11 +4129,28 @@ retry:
 	error = may_linkat(&old_path);
 	if (unlikely(error))
 		goto out_dput;
+
+	if (gr_handle_hardlink(old_path.dentry, old_path.mnt,
+			       old_path.dentry->d_inode,
+			       old_path.dentry->d_inode->i_mode, to)) {
+		error = -EACCES;
+		goto out_dput;
+	}
+
+	if (!gr_acl_handle_link(new_dentry, new_path.dentry, new_path.mnt,
+				old_path.dentry, old_path.mnt, to)) {
+		error = -EACCES;
+		goto out_dput;
+	}
+
 	error = security_path_link(old_path.dentry, &new_path, new_dentry);
 	if (error)
 		goto out_dput;
 	error = vfs_link(old_path.dentry, new_path.dentry->d_inode, new_dentry, &delegated_inode);
+	if (!error)
+		gr_handle_create(new_dentry, new_path.mnt);
 out_dput:
+	putname(to);
 	done_path_create(&new_path, new_dentry);
 	if (delegated_inode) {
 		error = break_deleg_wait(&delegated_inode);
@@ -4279,6 +4460,12 @@ retry_deleg:
 	if (new_dentry == trap)
 		goto exit5;
 
+	error = gr_acl_handle_rename(new_dentry, new_dir, newnd.path.mnt,
+				     old_dentry, old_dir->d_inode, oldnd.path.mnt,
+				     to, flags);
+	if (error)
+		goto exit5;
+
 	error = security_path_rename(&oldnd.path, old_dentry,
 				     &newnd.path, new_dentry, flags);
 	if (error)
@@ -4286,6 +4473,9 @@ retry_deleg:
 	error = vfs_rename(old_dir->d_inode, old_dentry,
 			   new_dir->d_inode, new_dentry,
 			   &delegated_inode, flags);
+	if (!error)
+		gr_handle_rename(old_dir->d_inode, new_dir->d_inode, old_dentry,
+				 new_dentry, oldnd.path.mnt, new_dentry->d_inode ? 1 : 0, flags);
 exit5:
 	dput(new_dentry);
 exit4:
@@ -4328,14 +4518,24 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna
 
 int readlink_copy(char __user *buffer, int buflen, const char *link)
 {
+	char tmpbuf[64];
+	const char *newlink;
 	int len = PTR_ERR(link);
+
 	if (IS_ERR(link))
 		goto out;
 
 	len = strlen(link);
 	if (len > (unsigned) buflen)
 		len = buflen;
-	if (copy_to_user(buffer, link, len))
+
+	if (len < sizeof(tmpbuf)) {
+		memcpy(tmpbuf, link, len);
+		newlink = tmpbuf;
+	} else
+		newlink = link;
+
+	if (copy_to_user(buffer, newlink, len))
 		len = -EFAULT;
 out:
 	return len;
diff --git a/fs/namespace.c b/fs/namespace.c
index 140d177..cef9c30 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1378,6 +1378,9 @@ static int do_umount(struct mount *mnt, int flags)
 		if (!(sb->s_flags & MS_RDONLY))
 			retval = do_remount_sb(sb, MS_RDONLY, NULL, 0);
 		up_write(&sb->s_umount);
+
+		gr_log_remount(mnt->mnt_devname, retval);
+
 		return retval;
 	}
 
@@ -1400,6 +1403,9 @@ static int do_umount(struct mount *mnt, int flags)
 	}
 	unlock_mount_hash();
 	namespace_unlock();
+
+	gr_log_unmount(mnt->mnt_devname, retval);
+
 	return retval;
 }
 
@@ -1419,7 +1425,7 @@ static inline bool may_mount(void)
  * unixes. Our API is identical to OSF/1 to avoid making a mess of AMD
  */
 
-SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
+SYSCALL_DEFINE2(umount, const char __user *, name, int, flags)
 {
 	struct path path;
 	struct mount *mnt;
@@ -1461,7 +1467,7 @@ out:
 /*
  *	The 2.0 compatible umount. No flags.
  */
-SYSCALL_DEFINE1(oldumount, char __user *, name)
+SYSCALL_DEFINE1(oldumount, const char __user *, name)
 {
 	return sys_umount(name, 0);
 }
@@ -2510,6 +2516,16 @@ long do_mount(const char *dev_name, const char *dir_name,
 		   MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
 		   MS_STRICTATIME);
 
+	if (gr_handle_rofs_mount(path.dentry, path.mnt, mnt_flags)) {
+		retval = -EPERM;
+		goto dput_out;
+	}
+
+	if (gr_handle_chroot_mount(path.dentry, path.mnt, dev_name)) {
+		retval = -EPERM;
+		goto dput_out;
+	}
+
 	if (flags & MS_REMOUNT)
 		retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags,
 				    data_page);
@@ -2524,6 +2540,9 @@ long do_mount(const char *dev_name, const char *dir_name,
 				      dev_name, data_page);
 dput_out:
 	path_put(&path);
+
+	gr_log_mount(dev_name, dir_name, retval);
+
 	return retval;
 }
 
@@ -2541,7 +2560,7 @@ static void free_mnt_ns(struct mnt_namespace *ns)
  * number incrementing at 10Ghz will take 12,427 years to wrap which
  * is effectively never, so we can ignore the possibility.
  */
-static atomic64_t mnt_ns_seq = ATOMIC64_INIT(1);
+static atomic64_unchecked_t mnt_ns_seq = ATOMIC64_INIT(1);
 
 static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
 {
@@ -2556,7 +2575,7 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
 		kfree(new_ns);
 		return ERR_PTR(ret);
 	}
-	new_ns->seq = atomic64_add_return(1, &mnt_ns_seq);
+	new_ns->seq = atomic64_inc_return_unchecked(&mnt_ns_seq);
 	atomic_set(&new_ns->count, 1);
 	new_ns->root = NULL;
 	INIT_LIST_HEAD(&new_ns->list);
@@ -2566,7 +2585,7 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
 	return new_ns;
 }
 
-struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
+__latent_entropy struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
 		struct user_namespace *user_ns, struct fs_struct *new_fs)
 {
 	struct mnt_namespace *new_ns;
@@ -2687,8 +2706,8 @@ struct dentry *mount_subtree(struct vfsmount *mnt, const char *name)
 }
 EXPORT_SYMBOL(mount_subtree);
 
-SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
-		char __user *, type, unsigned long, flags, void __user *, data)
+SYSCALL_DEFINE5(mount, const char __user *, dev_name, const char __user *, dir_name,
+		const char __user *, type, unsigned long, flags, void __user *, data)
 {
 	int ret;
 	char *kernel_type;
@@ -2801,6 +2820,11 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
 	if (error)
 		goto out2;
 
+	if (gr_handle_chroot_pivot()) {
+		error = -EPERM;
+		goto out2;
+	}
+
 	get_fs_root(current->fs, &root);
 	old_mp = lock_mount(&old);
 	error = PTR_ERR(old_mp);
@@ -3069,7 +3093,7 @@ static int mntns_install(struct nsproxy *nsproxy, void *ns)
 	    !ns_capable(current_user_ns(), CAP_SYS_ADMIN))
 		return -EPERM;
 
-	if (fs->users != 1)
+	if (atomic_read(&fs->users) != 1)
 		return -EINVAL;
 
 	get_mnt_ns(mnt_ns);
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index f4ccfe6..a5cf064 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -51,7 +51,7 @@ struct callback_op {
 	callback_decode_arg_t decode_args;
 	callback_encode_res_t encode_res;
 	long res_maxsize;
-};
+} __do_const;
 
 static struct callback_op callback_ops[];
 
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 9927913..faffc5c 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1219,16 +1219,16 @@ static int nfs_size_need_update(const struct inode *inode, const struct nfs_fatt
 	return nfs_size_to_loff_t(fattr->size) > i_size_read(inode);
 }
 
-static atomic_long_t nfs_attr_generation_counter;
+static atomic_long_unchecked_t nfs_attr_generation_counter;
 
 static unsigned long nfs_read_attr_generation_counter(void)
 {
-	return atomic_long_read(&nfs_attr_generation_counter);
+	return atomic_long_read_unchecked(&nfs_attr_generation_counter);
 }
 
 unsigned long nfs_inc_attr_generation_counter(void)
 {
-	return atomic_long_inc_return(&nfs_attr_generation_counter);
+	return atomic_long_inc_return_unchecked(&nfs_attr_generation_counter);
 }
 
 void nfs_fattr_init(struct nfs_fattr *fattr)
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 8f029db..3688b84 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -1157,7 +1157,7 @@ struct nfsd4_operation {
 	nfsd4op_rsize op_rsize_bop;
 	stateid_getter op_get_currentstateid;
 	stateid_setter op_set_currentstateid;
-};
+} __do_const;
 
 static struct nfsd4_operation nfsd4_ops[];
 
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 944275c..6fc40a7 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1539,7 +1539,7 @@ nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
 
 typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
 
-static nfsd4_dec nfsd4_dec_ops[] = {
+static const nfsd4_dec nfsd4_dec_ops[] = {
 	[OP_ACCESS]		= (nfsd4_dec)nfsd4_decode_access,
 	[OP_CLOSE]		= (nfsd4_dec)nfsd4_decode_close,
 	[OP_COMMIT]		= (nfsd4_dec)nfsd4_decode_commit,
diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
index 6040da8..4348565 100644
--- a/fs/nfsd/nfscache.c
+++ b/fs/nfsd/nfscache.c
@@ -518,17 +518,20 @@ nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp)
 {
 	struct svc_cacherep *rp = rqstp->rq_cacherep;
 	struct kvec	*resv = &rqstp->rq_res.head[0], *cachv;
-	int		len;
+	long		len;
 	size_t		bufsize = 0;
 
 	if (!rp)
 		return;
 
-	len = resv->iov_len - ((char*)statp - (char*)resv->iov_base);
-	len >>= 2;
+	if (statp) {
+		len = (char*)statp - (char*)resv->iov_base;
+		len = resv->iov_len - len;
+		len >>= 2;
+	}
 
 	/* Don't cache excessive amounts of data and XDR failures */
-	if (!statp || len > (256 >> 2)) {
+	if (!statp || len > (256 >> 2) || len < 0) {
 		nfsd_reply_cache_free(rp);
 		return;
 	}
@@ -536,7 +539,7 @@ nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp)
 	switch (cachetype) {
 	case RC_REPLSTAT:
 		if (len != 1)
-			printk("nfsd: RC_REPLSTAT/reply len %d!\n",len);
+			printk("nfsd: RC_REPLSTAT/reply len %ld!\n",len);
 		rp->c_replstat = *statp;
 		break;
 	case RC_REPLBUFF:
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 140c496..e9cbf14 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -855,7 +855,7 @@ int nfsd_readv(struct file *file, loff_t offset, struct kvec *vec, int vlen,
 
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
-	host_err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset);
+	host_err = vfs_readv(file, (struct iovec __force_user *)vec, vlen, &offset);
 	set_fs(oldfs);
 	return nfsd_finish_read(file, count, host_err);
 }
@@ -943,7 +943,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
 
 	/* Write the data. */
 	oldfs = get_fs(); set_fs(KERNEL_DS);
-	host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos);
+	host_err = vfs_writev(file, (struct iovec __force_user *)vec, vlen, &pos);
 	set_fs(oldfs);
 	if (host_err < 0)
 		goto out_nfserr;
@@ -1482,7 +1482,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
 	 */
 
 	oldfs = get_fs(); set_fs(KERNEL_DS);
-	host_err = inode->i_op->readlink(path.dentry, (char __user *)buf, *lenp);
+	host_err = inode->i_op->readlink(path.dentry, (char __force_user *)buf, *lenp);
 	set_fs(oldfs);
 
 	if (host_err < 0)
diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
index 52ccd34..7a6b202 100644
--- a/fs/nls/nls_base.c
+++ b/fs/nls/nls_base.c
@@ -234,21 +234,25 @@ EXPORT_SYMBOL(utf16s_to_utf8s);
 
 int __register_nls(struct nls_table *nls, struct module *owner)
 {
-	struct nls_table ** tmp = &tables;
+	struct nls_table *tmp = tables;
 
 	if (nls->next)
 		return -EBUSY;
 
-	nls->owner = owner;
+	pax_open_kernel();
+	*(void **)&nls->owner = owner;
+	pax_close_kernel();
 	spin_lock(&nls_lock);
-	while (*tmp) {
-		if (nls == *tmp) {
+	while (tmp) {
+		if (nls == tmp) {
 			spin_unlock(&nls_lock);
 			return -EBUSY;
 		}
-		tmp = &(*tmp)->next;
+		tmp = tmp->next;
 	}
-	nls->next = tables;
+	pax_open_kernel();
+	*(struct nls_table **)&nls->next = tables;
+	pax_close_kernel();
 	tables = nls;
 	spin_unlock(&nls_lock);
 	return 0;	
@@ -257,12 +261,14 @@ EXPORT_SYMBOL(__register_nls);
 
 int unregister_nls(struct nls_table * nls)
 {
-	struct nls_table ** tmp = &tables;
+	struct nls_table * const * tmp = &tables;
 
 	spin_lock(&nls_lock);
 	while (*tmp) {
 		if (nls == *tmp) {
-			*tmp = nls->next;
+			pax_open_kernel();
+			*(struct nls_table **)tmp = nls->next;
+			pax_close_kernel();
 			spin_unlock(&nls_lock);
 			return 0;
 		}
@@ -272,7 +278,7 @@ int unregister_nls(struct nls_table * nls)
 	return -EINVAL;
 }
 
-static struct nls_table *find_nls(char *charset)
+static struct nls_table *find_nls(const char *charset)
 {
 	struct nls_table *nls;
 	spin_lock(&nls_lock);
@@ -288,7 +294,7 @@ static struct nls_table *find_nls(char *charset)
 	return nls;
 }
 
-struct nls_table *load_nls(char *charset)
+struct nls_table *load_nls(const char *charset)
 {
 	return try_then_request_module(find_nls(charset), "nls_%s", charset);
 }
diff --git a/fs/nls/nls_euc-jp.c b/fs/nls/nls_euc-jp.c
index 162b3f1..6076a7c 100644
--- a/fs/nls/nls_euc-jp.c
+++ b/fs/nls/nls_euc-jp.c
@@ -560,8 +560,10 @@ static int __init init_nls_euc_jp(void)
 	p_nls = load_nls("cp932");
 
 	if (p_nls) {
-		table.charset2upper = p_nls->charset2upper;
-		table.charset2lower = p_nls->charset2lower;
+		pax_open_kernel();
+		*(const unsigned char **)&table.charset2upper = p_nls->charset2upper;
+		*(const unsigned char **)&table.charset2lower = p_nls->charset2lower;
+		pax_close_kernel();
 		return register_nls(&table);
 	}
 
diff --git a/fs/nls/nls_koi8-ru.c b/fs/nls/nls_koi8-ru.c
index a80a741..7b96e1b 100644
--- a/fs/nls/nls_koi8-ru.c
+++ b/fs/nls/nls_koi8-ru.c
@@ -62,8 +62,10 @@ static int __init init_nls_koi8_ru(void)
 	p_nls = load_nls("koi8-u");
 
 	if (p_nls) {
-		table.charset2upper = p_nls->charset2upper;
-		table.charset2lower = p_nls->charset2lower;
+		pax_open_kernel();
+		*(const unsigned char **)&table.charset2upper = p_nls->charset2upper;
+		*(const unsigned char **)&table.charset2lower = p_nls->charset2lower;
+		pax_close_kernel();
 		return register_nls(&table);
 	}
 
diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
index 2685bc9..f3462c7 100644
--- a/fs/notify/fanotify/fanotify_user.c
+++ b/fs/notify/fanotify/fanotify_user.c
@@ -216,8 +216,8 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group,
 
 	fd = fanotify_event_metadata.fd;
 	ret = -EFAULT;
-	if (copy_to_user(buf, &fanotify_event_metadata,
-			 fanotify_event_metadata.event_len))
+	if (fanotify_event_metadata.event_len > sizeof fanotify_event_metadata ||
+	    copy_to_user(buf, &fanotify_event_metadata, fanotify_event_metadata.event_len))
 		goto out_close_fd;
 
 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c
index 238a593..9d7e2b9 100644
--- a/fs/notify/fdinfo.c
+++ b/fs/notify/fdinfo.c
@@ -42,7 +42,7 @@ static int show_mark_fhandle(struct seq_file *m, struct inode *inode)
 {
 	struct {
 		struct file_handle handle;
-		u8 pad[64];
+		u8 pad[MAX_HANDLE_SZ];
 	} f;
 	int size, ret, i;
 
@@ -50,7 +50,7 @@ static int show_mark_fhandle(struct seq_file *m, struct inode *inode)
 	size = f.handle.handle_bytes >> 2;
 
 	ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, 0);
-	if ((ret == 255) || (ret == -ENOSPC)) {
+	if ((ret == FILEID_INVALID) || (ret < 0)) {
 		WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
 		return 0;
 	}
diff --git a/fs/notify/notification.c b/fs/notify/notification.c
index 25a07c7..4f1163c 100644
--- a/fs/notify/notification.c
+++ b/fs/notify/notification.c
@@ -48,7 +48,7 @@
 #include <linux/fsnotify_backend.h>
 #include "fsnotify.h"
 
-static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0);
+static atomic_unchecked_t fsnotify_sync_cookie = ATOMIC_INIT(0);
 
 /**
  * fsnotify_get_cookie - return a unique cookie for use in synchronizing events.
@@ -56,7 +56,7 @@ static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0);
  */
 u32 fsnotify_get_cookie(void)
 {
-	return atomic_inc_return(&fsnotify_sync_cookie);
+	return atomic_inc_return_unchecked(&fsnotify_sync_cookie);
 }
 EXPORT_SYMBOL_GPL(fsnotify_get_cookie);
 
diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
index 9e38daf..5727cae 100644
--- a/fs/ntfs/dir.c
+++ b/fs/ntfs/dir.c
@@ -1310,7 +1310,7 @@ find_next_index_buffer:
 	ia = (INDEX_ALLOCATION*)(kaddr + (ia_pos & ~PAGE_CACHE_MASK &
 			~(s64)(ndir->itype.index.block_size - 1)));
 	/* Bounds checks. */
-	if (unlikely((u8*)ia < kaddr || (u8*)ia > kaddr + PAGE_CACHE_SIZE)) {
+	if (unlikely(!kaddr || (u8*)ia < kaddr || (u8*)ia > kaddr + PAGE_CACHE_SIZE)) {
 		ntfs_error(sb, "Out of bounds check failed. Corrupt directory "
 				"inode 0x%lx or driver bug.", vdir->i_ino);
 		goto err_out;
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 5c9e2c8..96e4ba0 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -1282,7 +1282,7 @@ static inline size_t ntfs_copy_from_user(struct page **pages,
 	char *addr;
 	size_t total = 0;
 	unsigned len;
-	int left;
+	unsigned left;
 
 	do {
 		len = PAGE_CACHE_SIZE - ofs;
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 6c3296e..c0b99f0 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -688,7 +688,7 @@ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb,
 		if (!silent)
 			ntfs_error(sb, "Primary boot sector is invalid.");
 	} else if (!silent)
-		ntfs_error(sb, read_err_str, "primary");
+		ntfs_error(sb, read_err_str, "%s", "primary");
 	if (!(NTFS_SB(sb)->on_errors & ON_ERRORS_RECOVER)) {
 		if (bh_primary)
 			brelse(bh_primary);
@@ -704,7 +704,7 @@ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb,
 			goto hotfix_primary_boot_sector;
 		brelse(bh_backup);
 	} else if (!silent)
-		ntfs_error(sb, read_err_str, "backup");
+		ntfs_error(sb, read_err_str, "%s", "backup");
 	/* Try to read NT3.51- backup boot sector. */
 	if ((bh_backup = sb_bread(sb, nr_blocks >> 1))) {
 		if (is_boot_sector_ntfs(sb, (NTFS_BOOT_SECTOR*)
@@ -715,7 +715,7 @@ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb,
 					"sector.");
 		brelse(bh_backup);
 	} else if (!silent)
-		ntfs_error(sb, read_err_str, "backup");
+		ntfs_error(sb, read_err_str, "%s", "backup");
 	/* We failed. Cleanup and return. */
 	if (bh_primary)
 		brelse(bh_primary);
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 0440134..d52c93a 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -1320,7 +1320,7 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
 		goto bail;
 	}
 
-	atomic_inc(&osb->alloc_stats.moves);
+	atomic_inc_unchecked(&osb->alloc_stats.moves);
 
 bail:
 	if (handle)
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index bbec539..7b266d5 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -236,11 +236,11 @@ enum ocfs2_vol_state
 
 struct ocfs2_alloc_stats
 {
-	atomic_t moves;
-	atomic_t local_data;
-	atomic_t bitmap_data;
-	atomic_t bg_allocs;
-	atomic_t bg_extends;
+	atomic_unchecked_t moves;
+	atomic_unchecked_t local_data;
+	atomic_unchecked_t bitmap_data;
+	atomic_unchecked_t bg_allocs;
+	atomic_unchecked_t bg_extends;
 };
 
 enum ocfs2_local_alloc_state
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index 0cb889a..6a26b24 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -867,7 +867,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
 				mlog_errno(status);
 			goto bail;
 		}
-		atomic_inc(&osb->alloc_stats.bg_extends);
+		atomic_inc_unchecked(&osb->alloc_stats.bg_extends);
 
 		/* You should never ask for this much metadata */
 		BUG_ON(bits_wanted >
@@ -2014,7 +2014,7 @@ int ocfs2_claim_metadata(handle_t *handle,
 		mlog_errno(status);
 		goto bail;
 	}
-	atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
+	atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
 
 	*suballoc_loc = res.sr_bg_blkno;
 	*suballoc_bit_start = res.sr_bit_offset;
@@ -2180,7 +2180,7 @@ int ocfs2_claim_new_inode_at_loc(handle_t *handle,
 	trace_ocfs2_claim_new_inode_at_loc((unsigned long long)di_blkno,
 					   res->sr_bits);
 
-	atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
+	atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
 
 	BUG_ON(res->sr_bits != 1);
 
@@ -2222,7 +2222,7 @@ int ocfs2_claim_new_inode(handle_t *handle,
 		mlog_errno(status);
 		goto bail;
 	}
-	atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
+	atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
 
 	BUG_ON(res.sr_bits != 1);
 
@@ -2326,7 +2326,7 @@ int __ocfs2_claim_clusters(handle_t *handle,
 						      cluster_start,
 						      num_clusters);
 		if (!status)
-			atomic_inc(&osb->alloc_stats.local_data);
+			atomic_inc_unchecked(&osb->alloc_stats.local_data);
 	} else {
 		if (min_clusters > (osb->bitmap_cpg - 1)) {
 			/* The only paths asking for contiguousness
@@ -2352,7 +2352,7 @@ int __ocfs2_claim_clusters(handle_t *handle,
 				ocfs2_desc_bitmap_to_cluster_off(ac->ac_inode,
 								 res.sr_bg_blkno,
 								 res.sr_bit_offset);
-			atomic_inc(&osb->alloc_stats.bitmap_data);
+			atomic_inc_unchecked(&osb->alloc_stats.bitmap_data);
 			*num_clusters = res.sr_bits;
 		}
 	}
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index ddb662b..f701c83 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -300,11 +300,11 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
 			"%10s => GlobalAllocs: %d  LocalAllocs: %d  "
 			"SubAllocs: %d  LAWinMoves: %d  SAExtends: %d\n",
 			"Stats",
-			atomic_read(&osb->alloc_stats.bitmap_data),
-			atomic_read(&osb->alloc_stats.local_data),
-			atomic_read(&osb->alloc_stats.bg_allocs),
-			atomic_read(&osb->alloc_stats.moves),
-			atomic_read(&osb->alloc_stats.bg_extends));
+			atomic_read_unchecked(&osb->alloc_stats.bitmap_data),
+			atomic_read_unchecked(&osb->alloc_stats.local_data),
+			atomic_read_unchecked(&osb->alloc_stats.bg_allocs),
+			atomic_read_unchecked(&osb->alloc_stats.moves),
+			atomic_read_unchecked(&osb->alloc_stats.bg_extends));
 
 	out += snprintf(buf + out, len - out,
 			"%10s => State: %u  Descriptor: %llu  Size: %u bits  "
@@ -2100,11 +2100,11 @@ static int ocfs2_initialize_super(struct super_block *sb,
 
 	mutex_init(&osb->system_file_mutex);
 
-	atomic_set(&osb->alloc_stats.moves, 0);
-	atomic_set(&osb->alloc_stats.local_data, 0);
-	atomic_set(&osb->alloc_stats.bitmap_data, 0);
-	atomic_set(&osb->alloc_stats.bg_allocs, 0);
-	atomic_set(&osb->alloc_stats.bg_extends, 0);
+	atomic_set_unchecked(&osb->alloc_stats.moves, 0);
+	atomic_set_unchecked(&osb->alloc_stats.local_data, 0);
+	atomic_set_unchecked(&osb->alloc_stats.bitmap_data, 0);
+	atomic_set_unchecked(&osb->alloc_stats.bg_allocs, 0);
+	atomic_set_unchecked(&osb->alloc_stats.bg_extends, 0);
 
 	/* Copy the blockcheck stats from the superblock probe */
 	osb->osb_ecc_stats = *stats;
diff --git a/fs/open.c b/fs/open.c
index d6fd3ac..6ccf474 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -32,6 +32,8 @@
 #include <linux/dnotify.h>
 #include <linux/compat.h>
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/fs.h>
 #include "internal.h"
 
 int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
@@ -103,6 +105,8 @@ long vfs_truncate(struct path *path, loff_t length)
 	error = locks_verify_truncate(inode, NULL, length);
 	if (!error)
 		error = security_path_truncate(path);
+	if (!error && !gr_acl_handle_truncate(path->dentry, path->mnt))
+		error = -EACCES;
 	if (!error)
 		error = do_truncate(path->dentry, length, 0, NULL);
 
@@ -187,6 +191,8 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
 	error = locks_verify_truncate(inode, f.file, length);
 	if (!error)
 		error = security_path_truncate(&f.file->f_path);
+	if (!error && !gr_acl_handle_truncate(f.file->f_path.dentry, f.file->f_path.mnt))
+		error = -EACCES;
 	if (!error)
 		error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, f.file);
 	sb_end_write(inode->i_sb);
@@ -380,6 +386,9 @@ retry:
 	if (__mnt_is_readonly(path.mnt))
 		res = -EROFS;
 
+	if (!res && !gr_acl_handle_access(path.dentry, path.mnt, mode))
+		res = -EACCES;
+
 out_path_release:
 	path_put(&path);
 	if (retry_estale(res, lookup_flags)) {
@@ -411,6 +420,8 @@ retry:
 	if (error)
 		goto dput_and_out;
 
+	gr_log_chdir(path.dentry, path.mnt);
+
 	set_fs_pwd(current->fs, &path);
 
 dput_and_out:
@@ -440,6 +451,13 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd)
 		goto out_putf;
 
 	error = inode_permission(inode, MAY_EXEC | MAY_CHDIR);
+
+	if (!error && !gr_chroot_fchdir(f.file->f_path.dentry, f.file->f_path.mnt))
+		error = -EPERM;
+
+	if (!error)
+		gr_log_chdir(f.file->f_path.dentry, f.file->f_path.mnt);
+
 	if (!error)
 		set_fs_pwd(current->fs, &f.file->f_path);
 out_putf:
@@ -469,7 +487,13 @@ retry:
 	if (error)
 		goto dput_and_out;
 
+	if (gr_handle_chroot_chroot(path.dentry, path.mnt))
+		goto dput_and_out;
+
 	set_fs_root(current->fs, &path);
+
+	gr_handle_chroot_chdir(&path);
+
 	error = 0;
 dput_and_out:
 	path_put(&path);
@@ -493,6 +517,16 @@ static int chmod_common(struct path *path, umode_t mode)
 		return error;
 retry_deleg:
 	mutex_lock(&inode->i_mutex);
+
+	if (!gr_acl_handle_chmod(path->dentry, path->mnt, &mode)) {
+		error = -EACCES;
+		goto out_unlock;
+	}
+	if (gr_handle_chroot_chmod(path->dentry, path->mnt, mode)) {
+		error = -EACCES;
+		goto out_unlock;
+	}
+
 	error = security_path_chmod(path, mode);
 	if (error)
 		goto out_unlock;
@@ -558,6 +592,9 @@ static int chown_common(struct path *path, uid_t user, gid_t group)
 	uid = make_kuid(current_user_ns(), user);
 	gid = make_kgid(current_user_ns(), group);
 
+	if (!gr_acl_handle_chown(path->dentry, path->mnt))
+		return -EACCES;
+
 	newattrs.ia_valid =  ATTR_CTIME;
 	if (user != (uid_t) -1) {
 		if (!uid_valid(uid))
@@ -983,6 +1020,7 @@ long do_sys_open(int dfd, const char __user *filename, int flags, umode_t mode)
 		} else {
 			fsnotify_open(f);
 			fd_install(fd, f);
+			trace_do_sys_open(tmp->name, flags, mode);
 		}
 	}
 	putname(tmp);
diff --git a/fs/pipe.c b/fs/pipe.c
index 21981e5..3d5f55c 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -56,7 +56,7 @@ unsigned int pipe_min_size = PAGE_SIZE;
 
 static void pipe_lock_nested(struct pipe_inode_info *pipe, int subclass)
 {
-	if (pipe->files)
+	if (atomic_read(&pipe->files))
 		mutex_lock_nested(&pipe->mutex, subclass);
 }
 
@@ -71,7 +71,7 @@ EXPORT_SYMBOL(pipe_lock);
 
 void pipe_unlock(struct pipe_inode_info *pipe)
 {
-	if (pipe->files)
+	if (atomic_read(&pipe->files))
 		mutex_unlock(&pipe->mutex);
 }
 EXPORT_SYMBOL(pipe_unlock);
@@ -292,9 +292,9 @@ pipe_read(struct kiocb *iocb, struct iov_iter *to)
 		}
 		if (bufs)	/* More to do? */
 			continue;
-		if (!pipe->writers)
+		if (!atomic_read(&pipe->writers))
 			break;
-		if (!pipe->waiting_writers) {
+		if (!atomic_read(&pipe->waiting_writers)) {
 			/* syscall merging: Usually we must not sleep
 			 * if O_NONBLOCK is set, or if we got some data.
 			 * But if a writer sleeps in kernel space, then
@@ -351,7 +351,7 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from)
 
 	__pipe_lock(pipe);
 
-	if (!pipe->readers) {
+	if (!atomic_read(&pipe->readers)) {
 		send_sig(SIGPIPE, current, 0);
 		ret = -EPIPE;
 		goto out;
@@ -387,7 +387,7 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from)
 	for (;;) {
 		int bufs;
 
-		if (!pipe->readers) {
+		if (!atomic_read(&pipe->readers)) {
 			send_sig(SIGPIPE, current, 0);
 			if (!ret)
 				ret = -EPIPE;
@@ -455,9 +455,9 @@ pipe_write(struct kiocb *iocb, struct iov_iter *from)
 			kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
 			do_wakeup = 0;
 		}
-		pipe->waiting_writers++;
+		atomic_inc(&pipe->waiting_writers);
 		pipe_wait(pipe);
-		pipe->waiting_writers--;
+		atomic_dec(&pipe->waiting_writers);
 	}
 out:
 	__pipe_unlock(pipe);
@@ -512,7 +512,7 @@ pipe_poll(struct file *filp, poll_table *wait)
 	mask = 0;
 	if (filp->f_mode & FMODE_READ) {
 		mask = (nrbufs > 0) ? POLLIN | POLLRDNORM : 0;
-		if (!pipe->writers && filp->f_version != pipe->w_counter)
+		if (!atomic_read(&pipe->writers) && filp->f_version != pipe->w_counter)
 			mask |= POLLHUP;
 	}
 
@@ -522,7 +522,7 @@ pipe_poll(struct file *filp, poll_table *wait)
 		 * Most Unices do not set POLLERR for FIFOs but on Linux they
 		 * behave exactly like pipes for poll().
 		 */
-		if (!pipe->readers)
+		if (!atomic_read(&pipe->readers))
 			mask |= POLLERR;
 	}
 
@@ -534,7 +534,7 @@ static void put_pipe_info(struct inode *inode, struct pipe_inode_info *pipe)
 	int kill = 0;
 
 	spin_lock(&inode->i_lock);
-	if (!--pipe->files) {
+	if (atomic_dec_and_test(&pipe->files)) {
 		inode->i_pipe = NULL;
 		kill = 1;
 	}
@@ -551,11 +551,11 @@ pipe_release(struct inode *inode, struct file *file)
 
 	__pipe_lock(pipe);
 	if (file->f_mode & FMODE_READ)
-		pipe->readers--;
+		atomic_dec(&pipe->readers);
 	if (file->f_mode & FMODE_WRITE)
-		pipe->writers--;
+		atomic_dec(&pipe->writers);
 
-	if (pipe->readers || pipe->writers) {
+	if (atomic_read(&pipe->readers) || atomic_read(&pipe->writers)) {
 		wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM | POLLERR | POLLHUP);
 		kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
 		kill_fasync(&pipe->fasync_writers, SIGIO, POLL_OUT);
@@ -620,7 +620,7 @@ void free_pipe_info(struct pipe_inode_info *pipe)
 	kfree(pipe);
 }
 
-static struct vfsmount *pipe_mnt __read_mostly;
+struct vfsmount *pipe_mnt __read_mostly;
 
 /*
  * pipefs_dname() is called from d_path().
@@ -650,8 +650,9 @@ static struct inode * get_pipe_inode(void)
 		goto fail_iput;
 
 	inode->i_pipe = pipe;
-	pipe->files = 2;
-	pipe->readers = pipe->writers = 1;
+	atomic_set(&pipe->files, 2);
+	atomic_set(&pipe->readers, 1);
+	atomic_set(&pipe->writers, 1);
 	inode->i_fop = &pipefifo_fops;
 
 	/*
@@ -830,17 +831,17 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	spin_lock(&inode->i_lock);
 	if (inode->i_pipe) {
 		pipe = inode->i_pipe;
-		pipe->files++;
+		atomic_inc(&pipe->files);
 		spin_unlock(&inode->i_lock);
 	} else {
 		spin_unlock(&inode->i_lock);
 		pipe = alloc_pipe_info();
 		if (!pipe)
 			return -ENOMEM;
-		pipe->files = 1;
+		atomic_set(&pipe->files, 1);
 		spin_lock(&inode->i_lock);
 		if (unlikely(inode->i_pipe)) {
-			inode->i_pipe->files++;
+			atomic_inc(&inode->i_pipe->files);
 			spin_unlock(&inode->i_lock);
 			free_pipe_info(pipe);
 			pipe = inode->i_pipe;
@@ -865,10 +866,10 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	 *  opened, even when there is no process writing the FIFO.
 	 */
 		pipe->r_counter++;
-		if (pipe->readers++ == 0)
+		if (atomic_inc_return(&pipe->readers) == 1)
 			wake_up_partner(pipe);
 
-		if (!is_pipe && !pipe->writers) {
+		if (!is_pipe && !atomic_read(&pipe->writers)) {
 			if ((filp->f_flags & O_NONBLOCK)) {
 				/* suppress POLLHUP until we have
 				 * seen a writer */
@@ -887,14 +888,14 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	 *  errno=ENXIO when there is no process reading the FIFO.
 	 */
 		ret = -ENXIO;
-		if (!is_pipe && (filp->f_flags & O_NONBLOCK) && !pipe->readers)
+		if (!is_pipe && (filp->f_flags & O_NONBLOCK) && !atomic_read(&pipe->readers))
 			goto err;
 
 		pipe->w_counter++;
-		if (!pipe->writers++)
+		if (atomic_inc_return(&pipe->writers) == 1)
 			wake_up_partner(pipe);
 
-		if (!is_pipe && !pipe->readers) {
+		if (!is_pipe && !atomic_read(&pipe->readers)) {
 			if (wait_for_partner(pipe, &pipe->r_counter))
 				goto err_wr;
 		}
@@ -908,11 +909,11 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	 *  the process can at least talk to itself.
 	 */
 
-		pipe->readers++;
-		pipe->writers++;
+		atomic_inc(&pipe->readers);
+		atomic_inc(&pipe->writers);
 		pipe->r_counter++;
 		pipe->w_counter++;
-		if (pipe->readers == 1 || pipe->writers == 1)
+		if (atomic_read(&pipe->readers) == 1 || atomic_read(&pipe->writers) == 1)
 			wake_up_partner(pipe);
 		break;
 
@@ -926,13 +927,13 @@ static int fifo_open(struct inode *inode, struct file *filp)
 	return 0;
 
 err_rd:
-	if (!--pipe->readers)
+	if (atomic_dec_and_test(&pipe->readers))
 		wake_up_interruptible(&pipe->wait);
 	ret = -ERESTARTSYS;
 	goto err;
 
 err_wr:
-	if (!--pipe->writers)
+	if (atomic_dec_and_test(&pipe->writers))
 		wake_up_interruptible(&pipe->wait);
 	ret = -ERESTARTSYS;
 	goto err;
diff --git a/fs/posix_acl.c b/fs/posix_acl.c
index 0855f77..6787d50 100644
--- a/fs/posix_acl.c
+++ b/fs/posix_acl.c
@@ -20,6 +20,7 @@
 #include <linux/xattr.h>
 #include <linux/export.h>
 #include <linux/user_namespace.h>
+#include <linux/grsecurity.h>
 
 struct posix_acl **acl_by_type(struct inode *inode, int type)
 {
@@ -277,7 +278,7 @@ posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p)
 		}
 	}
         if (mode_p)
-                *mode_p = (*mode_p & ~S_IRWXUGO) | mode;
+                *mode_p = ((*mode_p & ~S_IRWXUGO) | mode) & ~gr_acl_umask();
         return not_equiv;
 }
 EXPORT_SYMBOL(posix_acl_equiv_mode);
@@ -427,7 +428,7 @@ static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p)
 		mode &= (group_obj->e_perm << 3) | ~S_IRWXG;
 	}
 
-	*mode_p = (*mode_p & ~S_IRWXUGO) | mode;
+	*mode_p = ((*mode_p & ~S_IRWXUGO) | mode) & ~gr_acl_umask();
         return not_equiv;
 }
 
@@ -485,6 +486,8 @@ __posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p)
 	struct posix_acl *clone = posix_acl_clone(*acl, gfp);
 	int err = -ENOMEM;
 	if (clone) {
+		*mode_p &= ~gr_acl_umask();
+
 		err = posix_acl_create_masq(clone, mode_p);
 		if (err < 0) {
 			posix_acl_release(clone);
@@ -659,11 +662,12 @@ struct posix_acl *
 posix_acl_from_xattr(struct user_namespace *user_ns,
 		     const void *value, size_t size)
 {
-	posix_acl_xattr_header *header = (posix_acl_xattr_header *)value;
-	posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end;
+	const posix_acl_xattr_header *header = (const posix_acl_xattr_header *)value;
+	const posix_acl_xattr_entry *entry = (const posix_acl_xattr_entry *)(header+1), *end;
 	int count;
 	struct posix_acl *acl;
 	struct posix_acl_entry *acl_e;
+	umode_t umask = gr_acl_umask();
 
 	if (!value)
 		return NULL;
@@ -689,12 +693,18 @@ posix_acl_from_xattr(struct user_namespace *user_ns,
 
 		switch(acl_e->e_tag) {
 			case ACL_USER_OBJ:
+				acl_e->e_perm &= ~((umask & S_IRWXU) >> 6);
+				break;
 			case ACL_GROUP_OBJ:
 			case ACL_MASK:
+				acl_e->e_perm &= ~((umask & S_IRWXG) >> 3);
+				break;
 			case ACL_OTHER:
+				acl_e->e_perm &= ~(umask & S_IRWXO);
 				break;
 
 			case ACL_USER:
+				acl_e->e_perm &= ~((umask & S_IRWXU) >> 6);
 				acl_e->e_uid =
 					make_kuid(user_ns,
 						  le32_to_cpu(entry->e_id));
@@ -702,6 +712,7 @@ posix_acl_from_xattr(struct user_namespace *user_ns,
 					goto fail;
 				break;
 			case ACL_GROUP:
+				acl_e->e_perm &= ~((umask & S_IRWXG) >> 3);
 				acl_e->e_gid =
 					make_kgid(user_ns,
 						  le32_to_cpu(entry->e_id));
diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
index 2183fcf..3c32a98 100644
--- a/fs/proc/Kconfig
+++ b/fs/proc/Kconfig
@@ -30,7 +30,7 @@ config PROC_FS
 
 config PROC_KCORE
 	bool "/proc/kcore support" if !ARM
-	depends on PROC_FS && MMU
+	depends on PROC_FS && MMU && !GRKERNSEC_PROC_ADD
 	help
 	  Provides a virtual ELF core file of the live kernel.  This can
 	  be read with gdb and other ELF tools.  No modifications can be
@@ -38,8 +38,8 @@ config PROC_KCORE
 
 config PROC_VMCORE
 	bool "/proc/vmcore support"
-	depends on PROC_FS && CRASH_DUMP
-	default y
+	depends on PROC_FS && CRASH_DUMP && !GRKERNSEC
+	default n
         help
         Exports the dump image of crashed kernel in ELF format.
 
@@ -63,8 +63,8 @@ config PROC_SYSCTL
 	  limited in memory.
 
 config PROC_PAGE_MONITOR
- 	default y
-	depends on PROC_FS && MMU
+ 	default n
+	depends on PROC_FS && MMU && !GRKERNSEC
 	bool "Enable /proc page monitoring" if EXPERT
  	help
 	  Various /proc files exist to monitor process memory utilization:
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 3e1290b..7ebe5b5 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -60,6 +60,7 @@
 #include <linux/tty.h>
 #include <linux/string.h>
 #include <linux/mman.h>
+#include <linux/grsecurity.h>
 #include <linux/proc_fs.h>
 #include <linux/ioport.h>
 #include <linux/uaccess.h>
@@ -347,6 +348,21 @@ static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
 	seq_putc(m, '\n');
 }
 
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+static inline void task_pax(struct seq_file *m, struct task_struct *p)
+{
+	if (p->mm)
+		seq_printf(m, "PaX:\t%c%c%c%c%c\n",
+			   p->mm->pax_flags & MF_PAX_PAGEEXEC ? 'P' : 'p',
+			   p->mm->pax_flags & MF_PAX_EMUTRAMP ? 'E' : 'e',
+			   p->mm->pax_flags & MF_PAX_MPROTECT ? 'M' : 'm',
+			   p->mm->pax_flags & MF_PAX_RANDMMAP ? 'R' : 'r',
+			   p->mm->pax_flags & MF_PAX_SEGMEXEC ? 'S' : 's');
+	else
+		seq_printf(m, "PaX:\t-----\n");
+}
+#endif
+
 int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
 			struct pid *pid, struct task_struct *task)
 {
@@ -365,9 +381,24 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
 	task_cpus_allowed(m, task);
 	cpuset_task_status_allowed(m, task);
 	task_context_switch_counts(m, task);
+
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+	task_pax(m, task);
+#endif
+
+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
+	task_grsec_rbac(m, task);
+#endif
+
 	return 0;
 }
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \
+			     (_mm->pax_flags & MF_PAX_RANDMMAP || \
+			      _mm->pax_flags & MF_PAX_SEGMEXEC))
+#endif
+
 static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 			struct pid *pid, struct task_struct *task, int whole)
 {
@@ -389,6 +420,13 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 	char tcomm[sizeof(task->comm)];
 	unsigned long flags;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (current->exec_id != m->exec_id) {
+		gr_log_badprocpid("stat");
+		return 0;
+	}
+#endif
+
 	state = *get_task_state(task);
 	vsize = eip = esp = 0;
 	permitted = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT);
@@ -459,6 +497,19 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 		gtime = task_gtime(task);
 	}
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (PAX_RAND_FLAGS(mm)) {
+		eip = 0;
+		esp = 0;
+		wchan = 0;
+	}
+#endif
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	wchan = 0;
+	eip =0;
+	esp =0;
+#endif
+
 	/* scale priority and nice values from timeslices to -20..20 */
 	/* to make it look like a "normal" Unix priority/nice value  */
 	priority = task_prio(task);
@@ -495,9 +546,15 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 	seq_put_decimal_ull(m, ' ', vsize);
 	seq_put_decimal_ull(m, ' ', mm ? get_mm_rss(mm) : 0);
 	seq_put_decimal_ull(m, ' ', rsslim);
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 1 : (mm ? (permitted ? mm->start_code : 1) : 0));
+	seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 1 : (mm ? (permitted ? mm->end_code : 1) : 0));
+	seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 0 : ((permitted && mm) ? mm->start_stack : 0));
+#else
 	seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0);
 	seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0);
 	seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0);
+#endif
 	seq_put_decimal_ull(m, ' ', esp);
 	seq_put_decimal_ull(m, ' ', eip);
 	/* The signal information here is obsolete.
@@ -519,7 +576,11 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 	seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime));
 	seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime));
 
-	if (mm && permitted) {
+	if (mm && permitted
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+		&& !PAX_RAND_FLAGS(mm)
+#endif
+	   ) {
 		seq_put_decimal_ull(m, ' ', mm->start_data);
 		seq_put_decimal_ull(m, ' ', mm->end_data);
 		seq_put_decimal_ull(m, ' ', mm->start_brk);
@@ -557,8 +618,15 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
 			struct pid *pid, struct task_struct *task)
 {
 	unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0;
-	struct mm_struct *mm = get_task_mm(task);
+	struct mm_struct *mm;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (current->exec_id != m->exec_id) {
+		gr_log_badprocpid("statm");
+		return 0;
+	}
+#endif
+	mm = get_task_mm(task);
 	if (mm) {
 		size = task_statm(mm, &shared, &text, &data, &resident);
 		mmput(mm);
@@ -581,6 +649,13 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
 	return 0;
 }
 
+#ifdef CONFIG_GRKERNSEC_PROC_IPADDR
+int proc_pid_ipaddr(struct task_struct *task, char *buffer)
+{
+	return sprintf(buffer, "%pI4\n", &task->signal->curr_ip);
+}
+#endif
+
 #ifdef CONFIG_CHECKPOINT_RESTORE
 static struct pid *
 get_children_pid(struct inode *inode, struct pid *pid_prev, loff_t pos)
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 2d696b0..b9da447 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -113,6 +113,14 @@ struct pid_entry {
 	union proc_op op;
 };
 
+struct getdents_callback {
+	struct linux_dirent __user * current_dir;
+	struct linux_dirent __user * previous;
+	struct file * file;
+	int count;
+	int error;
+};
+
 #define NOD(NAME, MODE, IOP, FOP, OP) {			\
 	.name = (NAME),					\
 	.len  = sizeof(NAME) - 1,			\
@@ -205,12 +213,28 @@ static int proc_pid_cmdline(struct task_struct *task, char *buffer)
 	return get_cmdline(task, buffer, PAGE_SIZE);
 }
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \
+			     (_mm->pax_flags & MF_PAX_RANDMMAP || \
+			      _mm->pax_flags & MF_PAX_SEGMEXEC))
+#endif
+
 static int proc_pid_auxv(struct task_struct *task, char *buffer)
 {
 	struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ);
 	int res = PTR_ERR(mm);
 	if (mm && !IS_ERR(mm)) {
 		unsigned int nwords = 0;
+
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+		/* allow if we're currently ptracing this task */
+		if (PAX_RAND_FLAGS(mm) &&
+		    (!(task->ptrace & PT_PTRACED) || (task->parent != current))) {
+			mmput(mm);
+			return 0;
+		}
+#endif
+
 		do {
 			nwords += 2;
 		} while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
@@ -224,7 +248,7 @@ static int proc_pid_auxv(struct task_struct *task, char *buffer)
 }
 
 
-#ifdef CONFIG_KALLSYMS
+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 /*
  * Provides a wchan file via kallsyms in a proper one-value-per-file format.
  * Returns the resolved symbol.  If that fails, simply return the address.
@@ -263,7 +287,7 @@ static void unlock_trace(struct task_struct *task)
 	mutex_unlock(&task->signal->cred_guard_mutex);
 }
 
-#ifdef CONFIG_STACKTRACE
+#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 
 #define MAX_STACK_TRACE_DEPTH	64
 
@@ -486,7 +510,7 @@ static int proc_pid_limits(struct task_struct *task, char *buffer)
 	return count;
 }
 
-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
+#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
 static int proc_pid_syscall(struct task_struct *task, char *buffer)
 {
 	long nr;
@@ -515,7 +539,7 @@ static int proc_pid_syscall(struct task_struct *task, char *buffer)
 /************************************************************************/
 
 /* permission checks */
-static int proc_fd_access_allowed(struct inode *inode)
+static int proc_fd_access_allowed(struct inode *inode, unsigned int log)
 {
 	struct task_struct *task;
 	int allowed = 0;
@@ -525,7 +549,10 @@ static int proc_fd_access_allowed(struct inode *inode)
 	 */
 	task = get_proc_task(inode);
 	if (task) {
-		allowed = ptrace_may_access(task, PTRACE_MODE_READ);
+		if (log)
+			allowed = ptrace_may_access(task, PTRACE_MODE_READ);
+		else
+			allowed = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT);
 		put_task_struct(task);
 	}
 	return allowed;
@@ -556,10 +583,35 @@ static bool has_pid_permissions(struct pid_namespace *pid,
 				 struct task_struct *task,
 				 int hide_pid_min)
 {
+	if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
+		return false;
+
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	rcu_read_lock();
+	{
+		const struct cred *tmpcred = current_cred();
+		const struct cred *cred = __task_cred(task);
+
+		if (uid_eq(tmpcred->uid, GLOBAL_ROOT_UID) || uid_eq(tmpcred->uid, cred->uid)
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+			|| in_group_p(grsec_proc_gid)
+#endif
+		) {
+			rcu_read_unlock();
+			return true;
+		}
+	}
+	rcu_read_unlock();
+
+	if (!pid->hide_pid)
+		return false;
+#endif
+
 	if (pid->hide_pid < hide_pid_min)
 		return true;
 	if (in_group_p(pid->pid_gid))
 		return true;
+
 	return ptrace_may_access(task, PTRACE_MODE_READ);
 }
 
@@ -577,7 +629,11 @@ static int proc_pid_permission(struct inode *inode, int mask)
 	put_task_struct(task);
 
 	if (!has_perms) {
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+		{
+#else
 		if (pid->hide_pid == 2) {
+#endif
 			/*
 			 * Let's make getdents(), stat(), and open()
 			 * consistent with each other.  If a process
@@ -675,6 +731,11 @@ static int __mem_open(struct inode *inode, struct file *file, unsigned int mode)
 	if (!task)
 		return -ESRCH;
 
+	if (gr_acl_handle_procpidmem(task)) {
+		put_task_struct(task);
+		return -EPERM;
+	}
+
 	mm = mm_access(task, mode);
 	put_task_struct(task);
 
@@ -690,6 +751,10 @@ static int __mem_open(struct inode *inode, struct file *file, unsigned int mode)
 
 	file->private_data = mm;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	file->f_version = current->exec_id;
+#endif
+
 	return 0;
 }
 
@@ -711,6 +776,17 @@ static ssize_t mem_rw(struct file *file, char __user *buf,
 	ssize_t copied;
 	char *page;
 
+#ifdef CONFIG_GRKERNSEC
+	if (write)
+		return -EPERM;
+#endif
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (file->f_version != current->exec_id) {
+		gr_log_badprocpid("mem");
+		return 0;
+	}
+#endif
+
 	if (!mm)
 		return 0;
 
@@ -723,7 +799,7 @@ static ssize_t mem_rw(struct file *file, char __user *buf,
 		goto free;
 
 	while (count > 0) {
-		int this_len = min_t(int, count, PAGE_SIZE);
+		ssize_t this_len = min_t(ssize_t, count, PAGE_SIZE);
 
 		if (write && copy_from_user(page, buf, this_len)) {
 			copied = -EFAULT;
@@ -815,6 +891,13 @@ static ssize_t environ_read(struct file *file, char __user *buf,
 	if (!mm)
 		return 0;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (file->f_version != current->exec_id) {
+		gr_log_badprocpid("environ");
+		return 0;
+	}
+#endif
+
 	page = (char *)__get_free_page(GFP_TEMPORARY);
 	if (!page)
 		return -ENOMEM;
@@ -824,7 +907,7 @@ static ssize_t environ_read(struct file *file, char __user *buf,
 		goto free;
 	while (count > 0) {
 		size_t this_len, max_len;
-		int retval;
+		ssize_t retval;
 
 		if (src >= (mm->env_end - mm->env_start))
 			break;
@@ -1438,7 +1521,7 @@ static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
 	int error = -EACCES;
 
 	/* Are we allowed to snoop on the tasks file descriptors? */
-	if (!proc_fd_access_allowed(inode))
+	if (!proc_fd_access_allowed(inode, 0))
 		goto out;
 
 	error = PROC_I(inode)->op.proc_get_link(dentry, &path);
@@ -1482,8 +1565,18 @@ static int proc_pid_readlink(struct dentry * dentry, char __user * buffer, int b
 	struct path path;
 
 	/* Are we allowed to snoop on the tasks file descriptors? */
-	if (!proc_fd_access_allowed(inode))
-		goto out;
+	/* logging this is needed for learning on chromium to work properly,
+	   but we don't want to flood the logs from 'ps' which does a readlink
+	   on /proc/fd/2 of tasks in the listing, nor do we want 'ps' to learn
+	   CAP_SYS_PTRACE as it's not necessary for its basic functionality
+	 */
+	if (dentry->d_name.name[0] == '2' && dentry->d_name.name[1] == '\0') {
+		if (!proc_fd_access_allowed(inode,0))
+			goto out;
+	} else {
+		if (!proc_fd_access_allowed(inode,1))
+			goto out;
+	}
 
 	error = PROC_I(inode)->op.proc_get_link(dentry, &path);
 	if (error)
@@ -1533,7 +1626,11 @@ struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *t
 		rcu_read_lock();
 		cred = __task_cred(task);
 		inode->i_uid = cred->euid;
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+		inode->i_gid = grsec_proc_gid;
+#else
 		inode->i_gid = cred->egid;
+#endif
 		rcu_read_unlock();
 	}
 	security_task_to_inode(task, inode);
@@ -1569,10 +1666,19 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 			return -ENOENT;
 		}
 		if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+		    (inode->i_mode == (S_IFDIR|S_IRUSR|S_IXUSR)) ||
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+		    (inode->i_mode == (S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP)) ||
+#endif
 		    task_dumpable(task)) {
 			cred = __task_cred(task);
 			stat->uid = cred->euid;
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+			stat->gid = grsec_proc_gid;
+#else
 			stat->gid = cred->egid;
+#endif
 		}
 	}
 	rcu_read_unlock();
@@ -1610,11 +1716,20 @@ int pid_revalidate(struct dentry *dentry, unsigned int flags)
 
 	if (task) {
 		if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+		    (inode->i_mode == (S_IFDIR|S_IRUSR|S_IXUSR)) ||
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+		    (inode->i_mode == (S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP)) ||
+#endif
 		    task_dumpable(task)) {
 			rcu_read_lock();
 			cred = __task_cred(task);
 			inode->i_uid = cred->euid;
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+			inode->i_gid = grsec_proc_gid;
+#else
 			inode->i_gid = cred->egid;
+#endif
 			rcu_read_unlock();
 		} else {
 			inode->i_uid = GLOBAL_ROOT_UID;
@@ -2149,6 +2264,9 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
 	if (!task)
 		goto out_no_task;
 
+	if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
+		goto out;
+
 	/*
 	 * Yes, it does not scale. And it should not. Don't add
 	 * new entries into /proc/<tgid>/ without very good reasons.
@@ -2179,6 +2297,9 @@ static int proc_pident_readdir(struct file *file, struct dir_context *ctx,
 	if (!task)
 		return -ENOENT;
 
+	if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
+		goto out;
+
 	if (!dir_emit_dots(file, ctx))
 		goto out;
 
@@ -2568,7 +2689,7 @@ static const struct pid_entry tgid_base_stuff[] = {
 	REG("autogroup",  S_IRUGO|S_IWUSR, proc_pid_sched_autogroup_operations),
 #endif
 	REG("comm",      S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
+#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
 	INF("syscall",    S_IRUSR, proc_pid_syscall),
 #endif
 	INF("cmdline",    S_IRUGO, proc_pid_cmdline),
@@ -2593,10 +2714,10 @@ static const struct pid_entry tgid_base_stuff[] = {
 #ifdef CONFIG_SECURITY
 	DIR("attr",       S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
 #endif
-#ifdef CONFIG_KALLSYMS
+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 	INF("wchan",      S_IRUGO, proc_pid_wchan),
 #endif
-#ifdef CONFIG_STACKTRACE
+#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 	ONE("stack",      S_IRUSR, proc_pid_stack),
 #endif
 #ifdef CONFIG_SCHEDSTATS
@@ -2630,6 +2751,9 @@ static const struct pid_entry tgid_base_stuff[] = {
 #ifdef CONFIG_HARDWALL
 	INF("hardwall",   S_IRUGO, proc_pid_hardwall),
 #endif
+#ifdef CONFIG_GRKERNSEC_PROC_IPADDR
+	INF("ipaddr",     S_IRUSR, proc_pid_ipaddr),
+#endif
 #ifdef CONFIG_USER_NS
 	REG("uid_map",    S_IRUGO|S_IWUSR, proc_uid_map_operations),
 	REG("gid_map",    S_IRUGO|S_IWUSR, proc_gid_map_operations),
@@ -2760,7 +2884,14 @@ static int proc_pid_instantiate(struct inode *dir,
 	if (!inode)
 		goto out;
 
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	inode->i_mode = S_IFDIR|S_IRUSR|S_IXUSR;
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	inode->i_gid = grsec_proc_gid;
+	inode->i_mode = S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP;
+#else
 	inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
+#endif
 	inode->i_op = &proc_tgid_base_inode_operations;
 	inode->i_fop = &proc_tgid_base_operations;
 	inode->i_flags|=S_IMMUTABLE;
@@ -2798,7 +2929,11 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsign
 	if (!task)
 		goto out;
 
+	if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
+		goto out_put_task;
+
 	result = proc_pid_instantiate(dir, dentry, task, NULL);
+out_put_task:
 	put_task_struct(task);
 out:
 	return ERR_PTR(result);
@@ -2904,7 +3039,7 @@ static const struct pid_entry tid_base_stuff[] = {
 	REG("sched",     S_IRUGO|S_IWUSR, proc_pid_sched_operations),
 #endif
 	REG("comm",      S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
+#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
 	INF("syscall",   S_IRUSR, proc_pid_syscall),
 #endif
 	INF("cmdline",   S_IRUGO, proc_pid_cmdline),
@@ -2931,10 +3066,10 @@ static const struct pid_entry tid_base_stuff[] = {
 #ifdef CONFIG_SECURITY
 	DIR("attr",      S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
 #endif
-#ifdef CONFIG_KALLSYMS
+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 	INF("wchan",     S_IRUGO, proc_pid_wchan),
 #endif
-#ifdef CONFIG_STACKTRACE
+#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 	ONE("stack",      S_IRUSR, proc_pid_stack),
 #endif
 #ifdef CONFIG_SCHEDSTATS
diff --git a/fs/proc/cmdline.c b/fs/proc/cmdline.c
index cbd82df..c0407d2 100644
--- a/fs/proc/cmdline.c
+++ b/fs/proc/cmdline.c
@@ -23,7 +23,11 @@ static const struct file_operations cmdline_proc_fops = {
 
 static int __init proc_cmdline_init(void)
 {
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+	proc_create_grsec("cmdline", 0, NULL, &cmdline_proc_fops);
+#else
 	proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
+#endif
 	return 0;
 }
 fs_initcall(proc_cmdline_init);
diff --git a/fs/proc/devices.c b/fs/proc/devices.c
index 50493ed..248166b 100644
--- a/fs/proc/devices.c
+++ b/fs/proc/devices.c
@@ -64,7 +64,11 @@ static const struct file_operations proc_devinfo_operations = {
 
 static int __init proc_devices_init(void)
 {
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+	proc_create_grsec("devices", 0, NULL, &proc_devinfo_operations);
+#else
 	proc_create("devices", 0, NULL, &proc_devinfo_operations);
+#endif
 	return 0;
 }
 fs_initcall(proc_devices_init);
diff --git a/fs/proc/fd.c b/fs/proc/fd.c
index 0788d09..9cc1385 100644
--- a/fs/proc/fd.c
+++ b/fs/proc/fd.c
@@ -26,7 +26,8 @@ static int seq_show(struct seq_file *m, void *v)
 	if (!task)
 		return -ENOENT;
 
-	files = get_files_struct(task);
+	if (!gr_acl_handle_procpidmem(task))
+		files = get_files_struct(task);
 	put_task_struct(task);
 
 	if (files) {
@@ -285,11 +286,21 @@ static struct dentry *proc_lookupfd(struct inode *dir, struct dentry *dentry,
  */
 int proc_fd_permission(struct inode *inode, int mask)
 {
+	struct task_struct *task;
 	int rv = generic_permission(inode, mask);
-	if (rv == 0)
-		return 0;
+
 	if (task_tgid(current) == proc_pid(inode))
 		rv = 0;
+
+	task = get_proc_task(inode);
+	if (task == NULL)
+		return rv;
+
+	if (gr_acl_handle_procpidmem(task))
+		rv = -EACCES;
+
+	put_task_struct(task);
+
 	return rv;
 }
 
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index b7f268e..3bea6b7 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -23,6 +23,7 @@
 #include <linux/bitops.h>
 #include <linux/spinlock.h>
 #include <linux/completion.h>
+#include <linux/grsecurity.h>
 #include <asm/uaccess.h>
 
 #include "internal.h"
@@ -207,6 +208,15 @@ struct dentry *proc_lookup(struct inode *dir, struct dentry *dentry,
 	return proc_lookup_de(PDE(dir), dir, dentry);
 }
 
+struct dentry *proc_lookup_restrict(struct inode *dir, struct dentry *dentry,
+		unsigned int flags)
+{
+	if (gr_proc_is_restricted())
+		return ERR_PTR(-EACCES);
+
+	return proc_lookup_de(PDE(dir), dir, dentry);
+}
+
 /*
  * This returns non-zero if at EOF, so that the /proc
  * root directory can use this and check if it should
@@ -264,6 +274,16 @@ int proc_readdir(struct file *file, struct dir_context *ctx)
 	return proc_readdir_de(PDE(inode), file, ctx);
 }
 
+int proc_readdir_restrict(struct file *file, struct dir_context *ctx)
+{
+	struct inode *inode = file_inode(file);
+
+	if (gr_proc_is_restricted())
+		return -EACCES;
+
+	return proc_readdir_de(PDE(inode), file, ctx);
+}
+
 /*
  * These are the generic /proc directory operations. They
  * use the in-memory "struct proc_dir_entry" tree to parse
@@ -275,6 +295,12 @@ static const struct file_operations proc_dir_operations = {
 	.iterate		= proc_readdir,
 };
 
+static const struct file_operations proc_dir_restricted_operations = {
+	.llseek			= generic_file_llseek,
+	.read			= generic_read_dir,
+	.iterate		= proc_readdir_restrict,
+};
+
 /*
  * proc directories can do almost nothing..
  */
@@ -284,6 +310,12 @@ static const struct inode_operations proc_dir_inode_operations = {
 	.setattr	= proc_notify_change,
 };
 
+static const struct inode_operations proc_dir_restricted_inode_operations = {
+	.lookup		= proc_lookup_restrict,
+	.getattr	= proc_getattr,
+	.setattr	= proc_notify_change,
+};
+
 static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp)
 {
 	struct proc_dir_entry *tmp;
@@ -294,8 +326,13 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
 		return ret;
 
 	if (S_ISDIR(dp->mode)) {
-		dp->proc_fops = &proc_dir_operations;
-		dp->proc_iops = &proc_dir_inode_operations;
+		if (dp->restricted) {
+			dp->proc_fops = &proc_dir_restricted_operations;
+			dp->proc_iops = &proc_dir_restricted_inode_operations;
+		} else {
+			dp->proc_fops = &proc_dir_operations;
+			dp->proc_iops = &proc_dir_inode_operations;
+		}
 		dir->nlink++;
 	} else if (S_ISLNK(dp->mode)) {
 		dp->proc_iops = &proc_link_inode_operations;
@@ -407,6 +444,27 @@ struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
 }
 EXPORT_SYMBOL_GPL(proc_mkdir_data);
 
+struct proc_dir_entry *proc_mkdir_data_restrict(const char *name, umode_t mode,
+		struct proc_dir_entry *parent, void *data)
+{
+	struct proc_dir_entry *ent;
+
+	if (mode == 0)
+		mode = S_IRUGO | S_IXUGO;
+
+	ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
+	if (ent) {
+		ent->data = data;
+		ent->restricted = 1;
+		if (proc_register(parent, ent) < 0) {
+			kfree(ent);
+			ent = NULL;
+		}
+	}
+	return ent;
+}
+EXPORT_SYMBOL_GPL(proc_mkdir_data_restrict);
+
 struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
 				       struct proc_dir_entry *parent)
 {
@@ -421,6 +479,13 @@ struct proc_dir_entry *proc_mkdir(const char *name,
 }
 EXPORT_SYMBOL(proc_mkdir);
 
+struct proc_dir_entry *proc_mkdir_restrict(const char *name,
+		struct proc_dir_entry *parent)
+{
+	return proc_mkdir_data_restrict(name, 0, parent, NULL);
+}
+EXPORT_SYMBOL(proc_mkdir_restrict);
+
 struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
 					struct proc_dir_entry *parent,
 					const struct file_operations *proc_fops,
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 0adbc02..bee4d0b 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -23,11 +23,17 @@
 #include <linux/slab.h>
 #include <linux/mount.h>
 #include <linux/magic.h>
+#include <linux/grsecurity.h>
 
 #include <asm/uaccess.h>
 
 #include "internal.h"
 
+#ifdef CONFIG_PROC_SYSCTL
+extern const struct inode_operations proc_sys_inode_operations;
+extern const struct inode_operations proc_sys_dir_operations;
+#endif
+
 static void proc_evict_inode(struct inode *inode)
 {
 	struct proc_dir_entry *de;
@@ -55,6 +61,13 @@ static void proc_evict_inode(struct inode *inode)
 	ns = PROC_I(inode)->ns.ns;
 	if (ns_ops && ns)
 		ns_ops->put(ns);
+
+#ifdef CONFIG_PROC_SYSCTL
+	if (inode->i_op == &proc_sys_inode_operations ||
+	    inode->i_op == &proc_sys_dir_operations)
+		gr_handle_delete(inode->i_ino, inode->i_sb->s_dev);
+#endif
+
 }
 
 static struct kmem_cache * proc_inode_cachep;
@@ -413,7 +426,11 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
 		if (de->mode) {
 			inode->i_mode = de->mode;
 			inode->i_uid = de->uid;
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+			inode->i_gid = grsec_proc_gid;
+#else
 			inode->i_gid = de->gid;
+#endif
 		}
 		if (de->size)
 			inode->i_size = de->size;
diff --git a/fs/proc/internal.h b/fs/proc/internal.h
index 3ab6d14..b26174e 100644
--- a/fs/proc/internal.h
+++ b/fs/proc/internal.h
@@ -46,9 +46,10 @@ struct proc_dir_entry {
 	struct completion *pde_unload_completion;
 	struct list_head pde_openers;	/* who did ->open, but not ->release */
 	spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
+	u8 restricted; /* a directory in /proc/net that should be restricted via GRKERNSEC_PROC */
 	u8 namelen;
 	char name[];
-};
+} __randomize_layout;
 
 union proc_op {
 	int (*proc_get_link)(struct dentry *, struct path *);
@@ -67,7 +68,7 @@ struct proc_inode {
 	struct ctl_table *sysctl_entry;
 	struct proc_ns ns;
 	struct inode vfs_inode;
-};
+} __randomize_layout;
 
 /*
  * General functions
@@ -155,6 +156,9 @@ extern int proc_pid_status(struct seq_file *, struct pid_namespace *,
 			   struct pid *, struct task_struct *);
 extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,
 			  struct pid *, struct task_struct *);
+#ifdef CONFIG_GRKERNSEC_PROC_IPADDR
+extern int proc_pid_ipaddr(struct task_struct *task, char *buffer);
+#endif
 
 /*
  * base.c
@@ -181,9 +185,11 @@ extern bool proc_fill_cache(struct file *, struct dir_context *, const char *, i
 extern spinlock_t proc_subdir_lock;
 
 extern struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
+extern struct dentry *proc_lookup_restrict(struct inode *, struct dentry *, unsigned int);
 extern struct dentry *proc_lookup_de(struct proc_dir_entry *, struct inode *,
 				     struct dentry *);
 extern int proc_readdir(struct file *, struct dir_context *);
+extern int proc_readdir_restrict(struct file *, struct dir_context *);
 extern int proc_readdir_de(struct proc_dir_entry *, struct file *, struct dir_context *);
 
 static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
diff --git a/fs/proc/interrupts.c b/fs/proc/interrupts.c
index a352d57..cb94a5c 100644
--- a/fs/proc/interrupts.c
+++ b/fs/proc/interrupts.c
@@ -47,7 +47,11 @@ static const struct file_operations proc_interrupts_operations = {
 
 static int __init proc_interrupts_init(void)
 {
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+	proc_create_grsec("interrupts", 0, NULL, &proc_interrupts_operations);
+#else
 	proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
+#endif
 	return 0;
 }
 fs_initcall(proc_interrupts_init);
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
index 39e6ef3..2f9cb5e 100644
--- a/fs/proc/kcore.c
+++ b/fs/proc/kcore.c
@@ -483,9 +483,10 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
 	 * the addresses in the elf_phdr on our list.
 	 */
 	start = kc_offset_to_vaddr(*fpos - elf_buflen);
-	if ((tsz = (PAGE_SIZE - (start & ~PAGE_MASK))) > buflen)
+	tsz = PAGE_SIZE - (start & ~PAGE_MASK);
+	if (tsz > buflen)
 		tsz = buflen;
-		
+
 	while (buflen) {
 		struct kcore_list *m;
 
@@ -514,20 +515,23 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
 			kfree(elf_buf);
 		} else {
 			if (kern_addr_valid(start)) {
-				unsigned long n;
+				char *elf_buf;
+				mm_segment_t oldfs;
 
-				n = copy_to_user(buffer, (char *)start, tsz);
-				/*
-				 * We cannot distinguish between fault on source
-				 * and fault on destination. When this happens
-				 * we clear too and hope it will trigger the
-				 * EFAULT again.
-				 */
-				if (n) { 
-					if (clear_user(buffer + tsz - n,
-								n))
+				elf_buf = kmalloc(tsz, GFP_KERNEL);
+				if (!elf_buf)
+					return -ENOMEM;
+				oldfs = get_fs();
+				set_fs(KERNEL_DS);
+				if (!__copy_from_user(elf_buf, (const void __user *)start, tsz)) {
+					set_fs(oldfs);
+					if (copy_to_user(buffer, elf_buf, tsz)) {
+						kfree(elf_buf);
 						return -EFAULT;
+					}
 				}
+				set_fs(oldfs);
+				kfree(elf_buf);
 			} else {
 				if (clear_user(buffer, tsz))
 					return -EFAULT;
@@ -547,6 +551,9 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
 
 static int open_kcore(struct inode *inode, struct file *filp)
 {
+#if defined(CONFIG_GRKERNSEC_PROC_ADD) || defined(CONFIG_GRKERNSEC_HIDESYM)
+	return -EPERM;
+#endif
 	if (!capable(CAP_SYS_RAWIO))
 		return -EPERM;
 	if (kcore_need_update)
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 7445af0..7c5113c 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -187,7 +187,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
 		vmi.used >> 10,
 		vmi.largest_chunk >> 10
 #ifdef CONFIG_MEMORY_FAILURE
-		,atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
+		,atomic_long_read_unchecked(&num_poisoned_pages) << (PAGE_SHIFT - 10)
 #endif
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 		,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
index d4a3574..b421ce9 100644
--- a/fs/proc/nommu.c
+++ b/fs/proc/nommu.c
@@ -64,7 +64,7 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
 
 	if (file) {
 		seq_pad(m, ' ');
-		seq_path(m, &file->f_path, "");
+		seq_path(m, &file->f_path, "\n\\");
 	}
 
 	seq_putc(m, '\n');
diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 4677bb7..dad3045 100644
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -23,9 +23,27 @@
 #include <linux/nsproxy.h>
 #include <net/net_namespace.h>
 #include <linux/seq_file.h>
+#include <linux/grsecurity.h>
 
 #include "internal.h"
 
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+static struct seq_operations *ipv6_seq_ops_addr;
+
+void register_ipv6_seq_ops_addr(struct seq_operations *addr)
+{
+	ipv6_seq_ops_addr = addr;
+}
+
+void unregister_ipv6_seq_ops_addr(void)
+{
+	ipv6_seq_ops_addr = NULL;
+}
+
+EXPORT_SYMBOL_GPL(register_ipv6_seq_ops_addr);
+EXPORT_SYMBOL_GPL(unregister_ipv6_seq_ops_addr);
+#endif
+
 static inline struct net *PDE_NET(struct proc_dir_entry *pde)
 {
 	return pde->parent->data;
@@ -36,6 +54,8 @@ static struct net *get_proc_net(const struct inode *inode)
 	return maybe_get_net(PDE_NET(PDE(inode)));
 }
 
+extern const struct seq_operations dev_seq_ops;
+
 int seq_open_net(struct inode *ino, struct file *f,
 		 const struct seq_operations *ops, int size)
 {
@@ -44,6 +64,14 @@ int seq_open_net(struct inode *ino, struct file *f,
 
 	BUG_ON(size < sizeof(*p));
 
+	/* only permit access to /proc/net/dev */
+	if (
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+	    ops != ipv6_seq_ops_addr && 
+#endif
+	    ops != &dev_seq_ops && gr_proc_is_restricted())
+		return -EACCES;
+
 	net = get_proc_net(ino);
 	if (net == NULL)
 		return -ENXIO;
@@ -66,6 +94,9 @@ int single_open_net(struct inode *inode, struct file *file,
 	int err;
 	struct net *net;
 
+	if (gr_proc_is_restricted())
+		return -EACCES;
+
 	err = -ENXIO;
 	net = get_proc_net(inode);
 	if (net == NULL)
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 7129046..6914844 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -11,13 +11,21 @@
 #include <linux/namei.h>
 #include <linux/mm.h>
 #include <linux/module.h>
+#include <linux/nsproxy.h>
+#ifdef CONFIG_GRKERNSEC
+#include <net/net_namespace.h>
+#endif
 #include "internal.h"
 
+extern int gr_handle_chroot_sysctl(const int op);
+extern int gr_handle_sysctl_mod(const char *dirname, const char *name,
+				const int op);
+
 static const struct dentry_operations proc_sys_dentry_operations;
 static const struct file_operations proc_sys_file_operations;
-static const struct inode_operations proc_sys_inode_operations;
+const struct inode_operations proc_sys_inode_operations;
 static const struct file_operations proc_sys_dir_file_operations;
-static const struct inode_operations proc_sys_dir_operations;
+const struct inode_operations proc_sys_dir_operations;
 
 void proc_sys_poll_notify(struct ctl_table_poll *poll)
 {
@@ -467,6 +475,9 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
 
 	err = NULL;
 	d_set_d_op(dentry, &proc_sys_dentry_operations);
+
+	gr_handle_proc_create(dentry, inode);
+
 	d_add(dentry, inode);
 
 out:
@@ -482,6 +493,7 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
 	struct inode *inode = file_inode(filp);
 	struct ctl_table_header *head = grab_header(inode);
 	struct ctl_table *table = PROC_I(inode)->sysctl_entry;
+	int op = write ? MAY_WRITE : MAY_READ;
 	ssize_t error;
 	size_t res;
 
@@ -493,7 +505,7 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
 	 * and won't be until we finish.
 	 */
 	error = -EPERM;
-	if (sysctl_perm(head, table, write ? MAY_WRITE : MAY_READ))
+	if (sysctl_perm(head, table, op))
 		goto out;
 
 	/* if that can happen at all, it should be -EINVAL, not -EISDIR */
@@ -501,6 +513,27 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
 	if (!table->proc_handler)
 		goto out;
 
+#ifdef CONFIG_GRKERNSEC
+	error = -EPERM;
+	if (gr_handle_chroot_sysctl(op))
+		goto out;
+	dget(filp->f_path.dentry);
+	if (gr_handle_sysctl_mod(filp->f_path.dentry->d_parent->d_name.name, table->procname, op)) {
+		dput(filp->f_path.dentry);
+		goto out;
+	}
+	dput(filp->f_path.dentry);
+	if (!gr_acl_handle_open(filp->f_path.dentry, filp->f_path.mnt, op))
+		goto out;
+	if (write) {
+		if (current->nsproxy->net_ns != table->extra2) {
+			if (!capable(CAP_SYS_ADMIN))
+				goto out;
+		} else if (!ns_capable(current->nsproxy->net_ns->user_ns, CAP_NET_ADMIN))
+			goto out;
+	}
+#endif
+
 	/* careful: calling conventions are nasty here */
 	res = count;
 	error = table->proc_handler(table, write, buf, &res, ppos);
@@ -598,6 +631,9 @@ static bool proc_sys_fill_cache(struct file *file,
 				return false;
 			} else {
 				d_set_d_op(child, &proc_sys_dentry_operations);
+
+				gr_handle_proc_create(child, inode);
+
 				d_add(child, inode);
 			}
 		} else {
@@ -641,6 +677,9 @@ static int scan(struct ctl_table_header *head, ctl_table *table,
 	if ((*pos)++ < ctx->pos)
 		return true;
 
+	if (!gr_acl_handle_hidden_file(file->f_path.dentry, file->f_path.mnt))
+		return 0;
+
 	if (unlikely(S_ISLNK(table->mode)))
 		res = proc_sys_link_fill_cache(file, ctx, head, table);
 	else
@@ -734,6 +773,9 @@ static int proc_sys_getattr(struct vfsmount *mnt, struct dentry *dentry, struct
 	if (IS_ERR(head))
 		return PTR_ERR(head);
 
+	if (table && !gr_acl_handle_hidden_file(dentry, mnt))
+		return -ENOENT;
+
 	generic_fillattr(inode, stat);
 	if (table)
 		stat->mode = (stat->mode & S_IFMT) | table->mode;
@@ -756,13 +798,13 @@ static const struct file_operations proc_sys_dir_file_operations = {
 	.llseek		= generic_file_llseek,
 };
 
-static const struct inode_operations proc_sys_inode_operations = {
+const struct inode_operations proc_sys_inode_operations = {
 	.permission	= proc_sys_permission,
 	.setattr	= proc_sys_setattr,
 	.getattr	= proc_sys_getattr,
 };
 
-static const struct inode_operations proc_sys_dir_operations = {
+const struct inode_operations proc_sys_dir_operations = {
 	.lookup		= proc_sys_lookup,
 	.permission	= proc_sys_permission,
 	.setattr	= proc_sys_setattr,
@@ -839,7 +881,7 @@ static struct ctl_dir *find_subdir(struct ctl_dir *dir,
 static struct ctl_dir *new_dir(struct ctl_table_set *set,
 			       const char *name, int namelen)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 	struct ctl_dir *new;
 	struct ctl_node *node;
 	char *new_name;
@@ -851,7 +893,7 @@ static struct ctl_dir *new_dir(struct ctl_table_set *set,
 		return NULL;
 
 	node = (struct ctl_node *)(new + 1);
-	table = (struct ctl_table *)(node + 1);
+	table = (ctl_table_no_const *)(node + 1);
 	new_name = (char *)(table + 2);
 	memcpy(new_name, name, namelen);
 	new_name[namelen] = '\0';
@@ -1020,7 +1062,8 @@ static int sysctl_check_table(const char *path, struct ctl_table *table)
 static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table *table,
 	struct ctl_table_root *link_root)
 {
-	struct ctl_table *link_table, *entry, *link;
+	ctl_table_no_const *link_table, *link;
+	struct ctl_table *entry;
 	struct ctl_table_header *links;
 	struct ctl_node *node;
 	char *link_name;
@@ -1043,7 +1086,7 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table
 		return NULL;
 
 	node = (struct ctl_node *)(links + 1);
-	link_table = (struct ctl_table *)(node + nr_entries);
+	link_table = (ctl_table_no_const *)(node + nr_entries);
 	link_name = (char *)&link_table[nr_entries + 1];
 
 	for (link = link_table, entry = table; entry->procname; link++, entry++) {
@@ -1291,8 +1334,8 @@ static int register_leaf_sysctl_tables(const char *path, char *pos,
 	struct ctl_table_header ***subheader, struct ctl_table_set *set,
 	struct ctl_table *table)
 {
-	struct ctl_table *ctl_table_arg = NULL;
-	struct ctl_table *entry, *files;
+	ctl_table_no_const *ctl_table_arg = NULL, *files = NULL;
+	struct ctl_table *entry;
 	int nr_files = 0;
 	int nr_dirs = 0;
 	int err = -ENOMEM;
@@ -1304,10 +1347,9 @@ static int register_leaf_sysctl_tables(const char *path, char *pos,
 			nr_files++;
 	}
 
-	files = table;
 	/* If there are mixed files and directories we need a new table */
 	if (nr_dirs && nr_files) {
-		struct ctl_table *new;
+		ctl_table_no_const *new;
 		files = kzalloc(sizeof(struct ctl_table) * (nr_files + 1),
 				GFP_KERNEL);
 		if (!files)
@@ -1325,7 +1367,7 @@ static int register_leaf_sysctl_tables(const char *path, char *pos,
 	/* Register everything except a directory full of subdirectories */
 	if (nr_files || !nr_dirs) {
 		struct ctl_table_header *header;
-		header = __register_sysctl_table(set, path, files);
+		header = __register_sysctl_table(set, path, files ? files : table);
 		if (!header) {
 			kfree(ctl_table_arg);
 			goto out;
diff --git a/fs/proc/root.c b/fs/proc/root.c
index 5dbadec..473af2f 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -185,7 +185,15 @@ void __init proc_root_init(void)
 	proc_mkdir("openprom", NULL);
 #endif
 	proc_tty_init();
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	proc_mkdir_mode("bus", S_IRUSR | S_IXUSR, NULL);
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	proc_mkdir_mode("bus", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL);
+#endif
+#else
 	proc_mkdir("bus", NULL);
+#endif
 	proc_sys_init();
 }
 
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index bf2d03f..f058f9c 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -11,6 +11,7 @@
 #include <linux/irqnr.h>
 #include <linux/cputime.h>
 #include <linux/tick.h>
+#include <linux/grsecurity.h>
 
 #ifndef arch_irq_stat_cpu
 #define arch_irq_stat_cpu(cpu) 0
@@ -87,6 +88,18 @@ static int show_stat(struct seq_file *p, void *v)
 	u64 sum_softirq = 0;
 	unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
 	struct timespec boottime;
+	int unrestricted = 1;
+
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	if (!uid_eq(current_uid(), GLOBAL_ROOT_UID)
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+		&& !in_group_p(grsec_proc_gid)
+#endif
+	)
+		unrestricted = 0;
+#endif
+#endif
 
 	user = nice = system = idle = iowait =
 		irq = softirq = steal = 0;
@@ -99,23 +112,25 @@ static int show_stat(struct seq_file *p, void *v)
 		nice += kcpustat_cpu(i).cpustat[CPUTIME_NICE];
 		system += kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
 		idle += get_idle_time(i);
-		iowait += get_iowait_time(i);
-		irq += kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
-		softirq += kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
-		steal += kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
-		guest += kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
-		guest_nice += kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
-		sum += kstat_cpu_irqs_sum(i);
-		sum += arch_irq_stat_cpu(i);
+		if (unrestricted) {
+			iowait += get_iowait_time(i);
+			irq += kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
+			softirq += kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
+			steal += kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
+			guest += kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
+			guest_nice += kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
+			sum += kstat_cpu_irqs_sum(i);
+			sum += arch_irq_stat_cpu(i);
+			for (j = 0; j < NR_SOFTIRQS; j++) {
+				unsigned int softirq_stat = kstat_softirqs_cpu(j, i);
 
-		for (j = 0; j < NR_SOFTIRQS; j++) {
-			unsigned int softirq_stat = kstat_softirqs_cpu(j, i);
-
-			per_softirq_sums[j] += softirq_stat;
-			sum_softirq += softirq_stat;
+				per_softirq_sums[j] += softirq_stat;
+				sum_softirq += softirq_stat;
+			}
 		}
 	}
-	sum += arch_irq_stat();
+	if (unrestricted)
+		sum += arch_irq_stat();
 
 	seq_puts(p, "cpu ");
 	seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
@@ -136,12 +151,14 @@ static int show_stat(struct seq_file *p, void *v)
 		nice = kcpustat_cpu(i).cpustat[CPUTIME_NICE];
 		system = kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
 		idle = get_idle_time(i);
-		iowait = get_iowait_time(i);
-		irq = kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
-		softirq = kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
-		steal = kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
-		guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
-		guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
+		if (unrestricted) {
+			iowait = get_iowait_time(i);
+			irq = kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
+			softirq = kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
+			steal = kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
+			guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
+			guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
+		}
 		seq_printf(p, "cpu%d", i);
 		seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
 		seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice));
@@ -159,7 +176,7 @@ static int show_stat(struct seq_file *p, void *v)
 
 	/* sum again ? it could be updated? */
 	for_each_irq_nr(j)
-		seq_put_decimal_ull(p, ' ', kstat_irqs(j));
+		seq_put_decimal_ull(p, ' ', unrestricted ? kstat_irqs(j) : 0ULL);
 
 	seq_printf(p,
 		"\nctxt %llu\n"
@@ -167,11 +184,11 @@ static int show_stat(struct seq_file *p, void *v)
 		"processes %lu\n"
 		"procs_running %lu\n"
 		"procs_blocked %lu\n",
-		nr_context_switches(),
+		unrestricted ? nr_context_switches() : 0ULL,
 		(unsigned long)jif,
-		total_forks,
-		nr_running(),
-		nr_iowait());
+		unrestricted ? total_forks : 0UL,
+		unrestricted ? nr_running() : 0UL,
+		unrestricted ? nr_iowait() : 0UL);
 
 	seq_printf(p, "softirq %llu", (unsigned long long)sum_softirq);
 
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index cfa63ee..fce112e 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -13,12 +13,19 @@
 #include <linux/swap.h>
 #include <linux/swapops.h>
 #include <linux/mmu_notifier.h>
+#include <linux/grsecurity.h>
 
 #include <asm/elf.h>
 #include <asm/uaccess.h>
 #include <asm/tlbflush.h>
 #include "internal.h"
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \
+			     (_mm->pax_flags & MF_PAX_RANDMMAP || \
+			      _mm->pax_flags & MF_PAX_SEGMEXEC))
+#endif
+
 void task_mem(struct seq_file *m, struct mm_struct *mm)
 {
 	unsigned long data, text, lib, swap;
@@ -54,8 +61,13 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
 		"VmExe:\t%8lu kB\n"
 		"VmLib:\t%8lu kB\n"
 		"VmPTE:\t%8lu kB\n"
-		"VmSwap:\t%8lu kB\n",
-		hiwater_vm << (PAGE_SHIFT-10),
+		"VmSwap:\t%8lu kB\n"
+
+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
+		"CsBase:\t%8lx\nCsLim:\t%8lx\n"
+#endif
+
+		,hiwater_vm << (PAGE_SHIFT-10),
 		total_vm << (PAGE_SHIFT-10),
 		mm->locked_vm << (PAGE_SHIFT-10),
 		mm->pinned_vm << (PAGE_SHIFT-10),
@@ -65,7 +77,19 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
 		mm->stack_vm << (PAGE_SHIFT-10), text, lib,
 		(PTRS_PER_PTE * sizeof(pte_t) *
 		 atomic_long_read(&mm->nr_ptes)) >> 10,
-		swap << (PAGE_SHIFT-10));
+		swap << (PAGE_SHIFT-10)
+
+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+		, PAX_RAND_FLAGS(mm) ? 0 : mm->context.user_cs_base
+		, PAX_RAND_FLAGS(mm) ? 0 : mm->context.user_cs_limit
+#else
+		, mm->context.user_cs_base
+		, mm->context.user_cs_limit
+#endif
+#endif
+
+	);
 }
 
 unsigned long task_vsize(struct mm_struct *mm)
@@ -271,13 +295,13 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
 		pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
 	}
 
-	/* We don't show the stack guard page in /proc/maps */
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	start = PAX_RAND_FLAGS(mm) ? 0UL : vma->vm_start;
+	end = PAX_RAND_FLAGS(mm) ? 0UL : vma->vm_end;
+#else
 	start = vma->vm_start;
-	if (stack_guard_page_start(vma, start))
-		start += PAGE_SIZE;
 	end = vma->vm_end;
-	if (stack_guard_page_end(vma, end))
-		end -= PAGE_SIZE;
+#endif
 
 	seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
 	seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
@@ -287,7 +311,11 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
 			flags & VM_WRITE ? 'w' : '-',
 			flags & VM_EXEC ? 'x' : '-',
 			flags & VM_MAYSHARE ? 's' : 'p',
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+			PAX_RAND_FLAGS(mm) ? 0UL : pgoff,
+#else
 			pgoff,
+#endif
 			MAJOR(dev), MINOR(dev), ino);
 
 	/*
@@ -296,7 +324,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
 	 */
 	if (file) {
 		seq_pad(m, ' ');
-		seq_path(m, &file->f_path, "\n");
+		seq_path(m, &file->f_path, "\n\\");
 		goto done;
 	}
 
@@ -328,8 +356,9 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
 			 * Thread stack in /proc/PID/task/TID/maps or
 			 * the main process stack.
 			 */
-			if (!is_pid || (vma->vm_start <= mm->start_stack &&
-			    vma->vm_end >= mm->start_stack)) {
+			if (!is_pid || (vma->vm_flags & (VM_GROWSDOWN | VM_GROWSUP)) ||
+			    (vma->vm_start <= mm->start_stack &&
+			     vma->vm_end >= mm->start_stack)) {
 				name = "[stack]";
 			} else {
 				/* Thread stack in /proc/PID/maps */
@@ -353,6 +382,13 @@ static int show_map(struct seq_file *m, void *v, int is_pid)
 	struct proc_maps_private *priv = m->private;
 	struct task_struct *task = priv->task;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (current->exec_id != m->exec_id) {
+		gr_log_badprocpid("maps");
+		return 0;
+	}
+#endif
+
 	show_map_vma(m, vma, is_pid);
 
 	if (m->count < m->size)  /* vma is copied successfully */
@@ -593,12 +629,23 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
 		.private = &mss,
 	};
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (current->exec_id != m->exec_id) {
+		gr_log_badprocpid("smaps");
+		return 0;
+	}
+#endif
 	memset(&mss, 0, sizeof mss);
-	mss.vma = vma;
-	/* mmap_sem is held in m_start */
-	if (vma->vm_mm && !is_vm_hugetlb_page(vma))
-		walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk);
-
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (!PAX_RAND_FLAGS(vma->vm_mm)) {
+#endif
+		mss.vma = vma;
+		/* mmap_sem is held in m_start */
+		if (vma->vm_mm && !is_vm_hugetlb_page(vma))
+			walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk);
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	}
+#endif
 	show_map_vma(m, vma, is_pid);
 
 	seq_printf(m,
@@ -616,7 +663,11 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
 		   "KernelPageSize: %8lu kB\n"
 		   "MMUPageSize:    %8lu kB\n"
 		   "Locked:         %8lu kB\n",
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+		   PAX_RAND_FLAGS(vma->vm_mm) ? 0UL : (vma->vm_end - vma->vm_start) >> 10,
+#else
 		   (vma->vm_end - vma->vm_start) >> 10,
+#endif
 		   mss.resident >> 10,
 		   (unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
 		   mss.shared_clean  >> 10,
@@ -1398,6 +1449,13 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
 	char buffer[64];
 	int nid;
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (current->exec_id != m->exec_id) {
+		gr_log_badprocpid("numa_maps");
+		return 0;
+	}
+#endif
+
 	if (!mm)
 		return 0;
 
@@ -1415,11 +1473,15 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
 	mpol_to_str(buffer, sizeof(buffer), pol);
 	mpol_cond_put(pol);
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	seq_printf(m, "%08lx %s", PAX_RAND_FLAGS(vma->vm_mm) ? 0UL : vma->vm_start, buffer);
+#else
 	seq_printf(m, "%08lx %s", vma->vm_start, buffer);
+#endif
 
 	if (file) {
 		seq_puts(m, " file=");
-		seq_path(m, &file->f_path, "\n\t= ");
+		seq_path(m, &file->f_path, "\n\t\\= ");
 	} else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) {
 		seq_puts(m, " heap");
 	} else {
diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
index 678455d..ebd3245 100644
--- a/fs/proc/task_nommu.c
+++ b/fs/proc/task_nommu.c
@@ -51,7 +51,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
 	else
 		bytes += kobjsize(mm);
 	
-	if (current->fs && current->fs->users > 1)
+	if (current->fs && atomic_read(&current->fs->users) > 1)
 		sbytes += kobjsize(current->fs);
 	else
 		bytes += kobjsize(current->fs);
@@ -161,7 +161,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
 
 	if (file) {
 		seq_pad(m, ' ');
-		seq_path(m, &file->f_path, "");
+		seq_path(m, &file->f_path, "\n\\");
 	} else if (mm) {
 		pid_t tid = vm_is_stack(priv->task, vma, is_pid);
 
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 382aa89..6b03974 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -105,9 +105,13 @@ static ssize_t read_from_oldmem(char *buf, size_t count,
 			nr_bytes = count;
 
 		/* If pfn is not ram, return zeros for sparse dump files */
-		if (pfn_is_ram(pfn) == 0)
-			memset(buf, 0, nr_bytes);
-		else {
+		if (pfn_is_ram(pfn) == 0) {
+			if (userbuf) {
+				if (clear_user((char __force_user *)buf, nr_bytes))
+					return -EFAULT;
+			} else
+				memset(buf, 0, nr_bytes);
+		} else {
 			tmp = copy_oldmem_page(pfn, buf, nr_bytes,
 						offset, userbuf);
 			if (tmp < 0)
@@ -170,7 +174,7 @@ int __weak remap_oldmem_pfn_range(struct vm_area_struct *vma,
 static int copy_to(void *target, void *src, size_t size, int userbuf)
 {
 	if (userbuf) {
-		if (copy_to_user((char __user *) target, src, size))
+		if (copy_to_user((char __force_user *) target, src, size))
 			return -EFAULT;
 	} else {
 		memcpy(target, src, size);
@@ -233,7 +237,7 @@ static ssize_t __read_vmcore(char *buffer, size_t buflen, loff_t *fpos,
 		if (*fpos < m->offset + m->size) {
 			tsz = min_t(size_t, m->offset + m->size - *fpos, buflen);
 			start = m->paddr + *fpos - m->offset;
-			tmp = read_from_oldmem(buffer, tsz, &start, userbuf);
+			tmp = read_from_oldmem((char __force_kernel *)buffer, tsz, &start, userbuf);
 			if (tmp < 0)
 				return tmp;
 			buflen -= tsz;
@@ -253,7 +257,7 @@ static ssize_t __read_vmcore(char *buffer, size_t buflen, loff_t *fpos,
 static ssize_t read_vmcore(struct file *file, char __user *buffer,
 			   size_t buflen, loff_t *fpos)
 {
-	return __read_vmcore((__force char *) buffer, buflen, fpos, 1);
+	return __read_vmcore((__force_kernel char *) buffer, buflen, fpos, 1);
 }
 
 /*
diff --git a/fs/qnx6/qnx6.h b/fs/qnx6/qnx6.h
index b00fcc9..e0c6381 100644
--- a/fs/qnx6/qnx6.h
+++ b/fs/qnx6/qnx6.h
@@ -74,7 +74,7 @@ enum {
 	BYTESEX_BE,
 };
 
-static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
+static inline __u64 __intentional_overflow(-1) fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
 {
 	if (sbi->s_bytesex == BYTESEX_LE)
 		return le64_to_cpu((__force __le64)n);
@@ -90,7 +90,7 @@ static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n)
 		return (__force __fs64)cpu_to_be64(n);
 }
 
-static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
+static inline __u32 __intentional_overflow(-1) fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
 {
 	if (sbi->s_bytesex == BYTESEX_LE)
 		return le32_to_cpu((__force __le32)n);
diff --git a/fs/quota/netlink.c b/fs/quota/netlink.c
index 72d2917..c917c12 100644
--- a/fs/quota/netlink.c
+++ b/fs/quota/netlink.c
@@ -45,7 +45,7 @@ static struct genl_family quota_genl_family = {
 void quota_send_warning(struct kqid qid, dev_t dev,
 			const char warntype)
 {
-	static atomic_t seq;
+	static atomic_unchecked_t seq;
 	struct sk_buff *skb;
 	void *msg_head;
 	int ret;
@@ -61,7 +61,7 @@ void quota_send_warning(struct kqid qid, dev_t dev,
 		  "VFS: Not enough memory to send quota warning.\n");
 		return;
 	}
-	msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
+	msg_head = genlmsg_put(skb, 0, atomic_add_return_unchecked(1, &seq),
 			&quota_genl_family, 0, QUOTA_NL_C_WARNING);
 	if (!msg_head) {
 		printk(KERN_ERR
diff --git a/fs/read_write.c b/fs/read_write.c
index 009d854..16ce214 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -495,7 +495,7 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t
 
 	old_fs = get_fs();
 	set_fs(get_ds());
-	p = (__force const char __user *)buf;
+	p = (const char __force_user *)buf;
 	if (count > MAX_RW_COUNT)
 		count =  MAX_RW_COUNT;
 	if (file->f_op->write)
diff --git a/fs/readdir.c b/fs/readdir.c
index 33fd922..e0d6094 100644
--- a/fs/readdir.c
+++ b/fs/readdir.c
@@ -18,6 +18,7 @@
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/unistd.h>
+#include <linux/namei.h>
 
 #include <asm/uaccess.h>
 
@@ -71,6 +72,7 @@ struct old_linux_dirent {
 struct readdir_callback {
 	struct dir_context ctx;
 	struct old_linux_dirent __user * dirent;
+	struct file * file;
 	int result;
 };
 
@@ -88,6 +90,10 @@ static int fillonedir(void * __buf, const char * name, int namlen, loff_t offset
 		buf->result = -EOVERFLOW;
 		return -EOVERFLOW;
 	}
+
+	if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
+		return 0;
+
 	buf->result++;
 	dirent = buf->dirent;
 	if (!access_ok(VERIFY_WRITE, dirent,
@@ -119,6 +125,7 @@ SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
 	if (!f.file)
 		return -EBADF;
 
+	buf.file = f.file;
 	error = iterate_dir(f.file, &buf.ctx);
 	if (buf.result)
 		error = buf.result;
@@ -144,6 +151,7 @@ struct getdents_callback {
 	struct dir_context ctx;
 	struct linux_dirent __user * current_dir;
 	struct linux_dirent __user * previous;
+	struct file * file;
 	int count;
 	int error;
 };
@@ -165,6 +173,10 @@ static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
 		buf->error = -EOVERFLOW;
 		return -EOVERFLOW;
 	}
+
+	if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
+		return 0;
+
 	dirent = buf->previous;
 	if (dirent) {
 		if (__put_user(offset, &dirent->d_off))
@@ -210,6 +222,7 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd,
 	if (!f.file)
 		return -EBADF;
 
+	buf.file = f.file;
 	error = iterate_dir(f.file, &buf.ctx);
 	if (error >= 0)
 		error = buf.error;
@@ -228,6 +241,7 @@ struct getdents_callback64 {
 	struct dir_context ctx;
 	struct linux_dirent64 __user * current_dir;
 	struct linux_dirent64 __user * previous;
+	struct file *file;
 	int count;
 	int error;
 };
@@ -243,6 +257,10 @@ static int filldir64(void * __buf, const char * name, int namlen, loff_t offset,
 	buf->error = -EINVAL;	/* only used if we fail.. */
 	if (reclen > buf->count)
 		return -EINVAL;
+
+	if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
+		return 0;
+
 	dirent = buf->previous;
 	if (dirent) {
 		if (__put_user(offset, &dirent->d_off))
@@ -290,6 +308,7 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd,
 	if (!f.file)
 		return -EBADF;
 
+	buf.file = f.file;
 	error = iterate_dir(f.file, &buf.ctx);
 	if (error >= 0)
 		error = buf.error;
diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
index 4d5e529..ccdbc84 100644
--- a/fs/reiserfs/do_balan.c
+++ b/fs/reiserfs/do_balan.c
@@ -1887,7 +1887,7 @@ void do_balance(struct tree_balance *tb, struct item_head *ih,
 		return;
 	}
 
-	atomic_inc(&fs_generation(tb->tb_sb));
+	atomic_inc_unchecked(&fs_generation(tb->tb_sb));
 	do_balance_starts(tb);
 
 	/*
diff --git a/fs/reiserfs/item_ops.c b/fs/reiserfs/item_ops.c
index cfaee91..b9d0d60 100644
--- a/fs/reiserfs/item_ops.c
+++ b/fs/reiserfs/item_ops.c
@@ -724,18 +724,18 @@ static void errcatch_print_vi(struct virtual_item *vi)
 }
 
 static struct item_operations errcatch_ops = {
-	errcatch_bytes_number,
-	errcatch_decrement_key,
-	errcatch_is_left_mergeable,
-	errcatch_print_item,
-	errcatch_check_item,
+	.bytes_number = errcatch_bytes_number,
+	.decrement_key = errcatch_decrement_key,
+	.is_left_mergeable = errcatch_is_left_mergeable,
+	.print_item = errcatch_print_item,
+	.check_item = errcatch_check_item,
 
-	errcatch_create_vi,
-	errcatch_check_left,
-	errcatch_check_right,
-	errcatch_part_size,
-	errcatch_unit_num,
-	errcatch_print_vi
+	.create_vi = errcatch_create_vi,
+	.check_left = errcatch_check_left,
+	.check_right = errcatch_check_right,
+	.part_size = errcatch_part_size,
+	.unit_num = errcatch_unit_num,
+	.print_vi = errcatch_print_vi
 };
 
 #if ! (TYPE_STAT_DATA == 0 && TYPE_INDIRECT == 1 && TYPE_DIRECT == 2 && TYPE_DIRENTRY == 3)
diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
index 02b0b7d..c85018b 100644
--- a/fs/reiserfs/procfs.c
+++ b/fs/reiserfs/procfs.c
@@ -114,7 +114,7 @@ static int show_super(struct seq_file *m, void *unused)
 		   "SMALL_TAILS " : "NO_TAILS ",
 		   replay_only(sb) ? "REPLAY_ONLY " : "",
 		   convert_reiserfs(sb) ? "CONV " : "",
-		   atomic_read(&r->s_generation_counter),
+		   atomic_read_unchecked(&r->s_generation_counter),
 		   SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
 		   SF(s_do_balance), SF(s_unneeded_left_neighbor),
 		   SF(s_good_search_by_key_reada), SF(s_bmaps),
diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
index 735c2c2..81b91af 100644
--- a/fs/reiserfs/reiserfs.h
+++ b/fs/reiserfs/reiserfs.h
@@ -573,7 +573,7 @@ struct reiserfs_sb_info {
 	/* Comment? -Hans */
 	wait_queue_head_t s_wait;
 	/* increased by one every time the  tree gets re-balanced */
-	atomic_t s_generation_counter;
+	atomic_unchecked_t s_generation_counter;
 
 	/* File system properties. Currently holds on-disk FS format */
 	unsigned long s_properties;
@@ -2294,7 +2294,7 @@ static inline loff_t max_reiserfs_offset(struct inode *inode)
 #define REISERFS_USER_MEM		1	/* user memory mode */
 
 #define fs_generation(s) (REISERFS_SB(s)->s_generation_counter)
-#define get_generation(s) atomic_read (&fs_generation(s))
+#define get_generation(s) atomic_read_unchecked (&fs_generation(s))
 #define FILESYSTEM_CHANGED_TB(tb)  (get_generation((tb)->tb_sb) != (tb)->fs_gen)
 #define __fs_changed(gen,s) (gen != get_generation (s))
 #define fs_changed(gen,s)		\
diff --git a/fs/select.c b/fs/select.c
index 467bb1c..cf9d65a 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -20,6 +20,7 @@
 #include <linux/export.h>
 #include <linux/slab.h>
 #include <linux/poll.h>
+#include <linux/security.h>
 #include <linux/personality.h> /* for STICKY_TIMEOUTS */
 #include <linux/file.h>
 #include <linux/fdtable.h>
@@ -880,6 +881,7 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds,
  	struct poll_list *walk = head;
  	unsigned long todo = nfds;
 
+	gr_learn_resource(current, RLIMIT_NOFILE, nfds, 1);
 	if (nfds > rlimit(RLIMIT_NOFILE))
 		return -EINVAL;
 
diff --git a/fs/seq_file.c b/fs/seq_file.c
index 3857b72..0b7281e 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -12,6 +12,8 @@
 #include <linux/slab.h>
 #include <linux/cred.h>
 #include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/grsecurity.h>
 
 #include <asm/uaccess.h>
 #include <asm/page.h>
@@ -34,12 +36,7 @@ static void seq_set_overflow(struct seq_file *m)
 
 static void *seq_buf_alloc(unsigned long size)
 {
-	void *buf;
-
-	buf = kmalloc(size, GFP_KERNEL | __GFP_NOWARN);
-	if (!buf && size > PAGE_SIZE)
-		buf = vmalloc(size);
-	return buf;
+	return kmalloc(size, GFP_KERNEL | GFP_USERCOPY);
 }
 
 /**
@@ -72,6 +69,9 @@ int seq_open(struct file *file, const struct seq_operations *op)
 #ifdef CONFIG_USER_NS
 	p->user_ns = file->f_cred->user_ns;
 #endif
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	p->exec_id = current->exec_id;
+#endif
 
 	/*
 	 * Wrappers around seq_open(e.g. swaps_open) need to be
@@ -94,6 +94,16 @@ int seq_open(struct file *file, const struct seq_operations *op)
 }
 EXPORT_SYMBOL(seq_open);
 
+
+int seq_open_restrict(struct file *file, const struct seq_operations *op)
+{
+	if (gr_proc_is_restricted())
+		return -EACCES;
+
+	return seq_open(file, op);
+}
+EXPORT_SYMBOL(seq_open_restrict);
+
 static int traverse(struct seq_file *m, loff_t offset)
 {
 	loff_t pos = 0, index;
@@ -165,7 +175,7 @@ Eoverflow:
 ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
 {
 	struct seq_file *m = file->private_data;
-	size_t copied = 0;
+	ssize_t copied = 0;
 	loff_t pos;
 	size_t n;
 	void *p;
@@ -596,7 +606,7 @@ static void single_stop(struct seq_file *p, void *v)
 int single_open(struct file *file, int (*show)(struct seq_file *, void *),
 		void *data)
 {
-	struct seq_operations *op = kmalloc(sizeof(*op), GFP_KERNEL);
+	seq_operations_no_const *op = kzalloc(sizeof(*op), GFP_KERNEL);
 	int res = -ENOMEM;
 
 	if (op) {
@@ -632,6 +642,17 @@ int single_open_size(struct file *file, int (*show)(struct seq_file *, void *),
 }
 EXPORT_SYMBOL(single_open_size);
 
+int single_open_restrict(struct file *file, int (*show)(struct seq_file *, void *),
+		void *data)
+{
+	if (gr_proc_is_restricted())
+		return -EACCES;
+
+	return single_open(file, show, data);
+}
+EXPORT_SYMBOL(single_open_restrict);
+
+
 int single_release(struct inode *inode, struct file *file)
 {
 	const struct seq_operations *op = ((struct seq_file *)file->private_data)->op;
diff --git a/fs/splice.c b/fs/splice.c
index f5cb9ba..8ddb1e9 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -193,7 +193,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
 	pipe_lock(pipe);
 
 	for (;;) {
-		if (!pipe->readers) {
+		if (!atomic_read(&pipe->readers)) {
 			send_sig(SIGPIPE, current, 0);
 			if (!ret)
 				ret = -EPIPE;
@@ -216,7 +216,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
 			page_nr++;
 			ret += buf->len;
 
-			if (pipe->files)
+			if (atomic_read(&pipe->files))
 				do_wakeup = 1;
 
 			if (!--spd->nr_pages)
@@ -247,9 +247,9 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
 			do_wakeup = 0;
 		}
 
-		pipe->waiting_writers++;
+		atomic_inc(&pipe->waiting_writers);
 		pipe_wait(pipe);
-		pipe->waiting_writers--;
+		atomic_dec(&pipe->waiting_writers);
 	}
 
 	pipe_unlock(pipe);
@@ -576,7 +576,7 @@ static ssize_t kernel_readv(struct file *file, const struct iovec *vec,
 	old_fs = get_fs();
 	set_fs(get_ds());
 	/* The cast to a user pointer is valid due to the set_fs() */
-	res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos);
+	res = vfs_readv(file, (const struct iovec __force_user *)vec, vlen, &pos);
 	set_fs(old_fs);
 
 	return res;
@@ -591,7 +591,7 @@ ssize_t kernel_write(struct file *file, const char *buf, size_t count,
 	old_fs = get_fs();
 	set_fs(get_ds());
 	/* The cast to a user pointer is valid due to the set_fs() */
-	res = vfs_write(file, (__force const char __user *)buf, count, &pos);
+	res = vfs_write(file, (const char __force_user *)buf, count, &pos);
 	set_fs(old_fs);
 
 	return res;
@@ -644,7 +644,7 @@ ssize_t default_file_splice_read(struct file *in, loff_t *ppos,
 			goto err;
 
 		this_len = min_t(size_t, len, PAGE_CACHE_SIZE - offset);
-		vec[i].iov_base = (void __user *) page_address(page);
+		vec[i].iov_base = (void __force_user *) page_address(page);
 		vec[i].iov_len = this_len;
 		spd.pages[i] = page;
 		spd.nr_pages++;
@@ -783,7 +783,7 @@ static int splice_from_pipe_feed(struct pipe_inode_info *pipe, struct splice_des
 			ops->release(pipe, buf);
 			pipe->curbuf = (pipe->curbuf + 1) & (pipe->buffers - 1);
 			pipe->nrbufs--;
-			if (pipe->files)
+			if (atomic_read(&pipe->files))
 				sd->need_wakeup = true;
 		}
 
@@ -807,10 +807,10 @@ static int splice_from_pipe_feed(struct pipe_inode_info *pipe, struct splice_des
 static int splice_from_pipe_next(struct pipe_inode_info *pipe, struct splice_desc *sd)
 {
 	while (!pipe->nrbufs) {
-		if (!pipe->writers)
+		if (!atomic_read(&pipe->writers))
 			return 0;
 
-		if (!pipe->waiting_writers && sd->num_spliced)
+		if (!atomic_read(&pipe->waiting_writers) && sd->num_spliced)
 			return 0;
 
 		if (sd->flags & SPLICE_F_NONBLOCK)
@@ -1040,7 +1040,7 @@ iter_file_splice_write(struct pipe_inode_info *pipe, struct file *out,
 				ops->release(pipe, buf);
 				pipe->curbuf = (pipe->curbuf + 1) & (pipe->buffers - 1);
 				pipe->nrbufs--;
-				if (pipe->files)
+				if (atomic_read(&pipe->files))
 					sd.need_wakeup = true;
 			} else {
 				buf->offset += ret;
@@ -1200,7 +1200,7 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
 		 * out of the pipe right after the splice_to_pipe(). So set
 		 * PIPE_READERS appropriately.
 		 */
-		pipe->readers = 1;
+		atomic_set(&pipe->readers, 1);
 
 		current->splice_pipe = pipe;
 	}
@@ -1496,6 +1496,7 @@ static int get_iovec_page_array(const struct iovec __user *iov,
 
 			partial[buffers].offset = off;
 			partial[buffers].len = plen;
+			partial[buffers].private = 0;
 
 			off = 0;
 			len -= plen;
@@ -1732,9 +1733,9 @@ static int ipipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
 			ret = -ERESTARTSYS;
 			break;
 		}
-		if (!pipe->writers)
+		if (!atomic_read(&pipe->writers))
 			break;
-		if (!pipe->waiting_writers) {
+		if (!atomic_read(&pipe->waiting_writers)) {
 			if (flags & SPLICE_F_NONBLOCK) {
 				ret = -EAGAIN;
 				break;
@@ -1766,7 +1767,7 @@ static int opipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
 	pipe_lock(pipe);
 
 	while (pipe->nrbufs >= pipe->buffers) {
-		if (!pipe->readers) {
+		if (!atomic_read(&pipe->readers)) {
 			send_sig(SIGPIPE, current, 0);
 			ret = -EPIPE;
 			break;
@@ -1779,9 +1780,9 @@ static int opipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
 			ret = -ERESTARTSYS;
 			break;
 		}
-		pipe->waiting_writers++;
+		atomic_inc(&pipe->waiting_writers);
 		pipe_wait(pipe);
-		pipe->waiting_writers--;
+		atomic_dec(&pipe->waiting_writers);
 	}
 
 	pipe_unlock(pipe);
@@ -1817,14 +1818,14 @@ retry:
 	pipe_double_lock(ipipe, opipe);
 
 	do {
-		if (!opipe->readers) {
+		if (!atomic_read(&opipe->readers)) {
 			send_sig(SIGPIPE, current, 0);
 			if (!ret)
 				ret = -EPIPE;
 			break;
 		}
 
-		if (!ipipe->nrbufs && !ipipe->writers)
+		if (!ipipe->nrbufs && !atomic_read(&ipipe->writers))
 			break;
 
 		/*
@@ -1921,7 +1922,7 @@ static int link_pipe(struct pipe_inode_info *ipipe,
 	pipe_double_lock(ipipe, opipe);
 
 	do {
-		if (!opipe->readers) {
+		if (!atomic_read(&opipe->readers)) {
 			send_sig(SIGPIPE, current, 0);
 			if (!ret)
 				ret = -EPIPE;
@@ -1966,7 +1967,7 @@ static int link_pipe(struct pipe_inode_info *ipipe,
 	 * return EAGAIN if we have the potential of some data in the
 	 * future, otherwise just return 0
 	 */
-	if (!ret && ipipe->waiting_writers && (flags & SPLICE_F_NONBLOCK))
+	if (!ret && atomic_read(&ipipe->waiting_writers) && (flags & SPLICE_F_NONBLOCK))
 		ret = -EAGAIN;
 
 	pipe_unlock(ipipe);
diff --git a/fs/stat.c b/fs/stat.c
index ae0c3ce..9ee641c 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -28,8 +28,13 @@ void generic_fillattr(struct inode *inode, struct kstat *stat)
 	stat->gid = inode->i_gid;
 	stat->rdev = inode->i_rdev;
 	stat->size = i_size_read(inode);
-	stat->atime = inode->i_atime;
-	stat->mtime = inode->i_mtime;
+	if (is_sidechannel_device(inode) && !capable_nolog(CAP_MKNOD)) {
+		stat->atime = inode->i_ctime;
+		stat->mtime = inode->i_ctime;
+	} else {
+		stat->atime = inode->i_atime;
+		stat->mtime = inode->i_mtime;
+	}
 	stat->ctime = inode->i_ctime;
 	stat->blksize = (1 << inode->i_blkbits);
 	stat->blocks = inode->i_blocks;
@@ -52,9 +57,16 @@ EXPORT_SYMBOL(generic_fillattr);
 int vfs_getattr_nosec(struct path *path, struct kstat *stat)
 {
 	struct inode *inode = path->dentry->d_inode;
+	int retval;
 
-	if (inode->i_op->getattr)
-		return inode->i_op->getattr(path->mnt, path->dentry, stat);
+	if (inode->i_op->getattr) {
+		retval = inode->i_op->getattr(path->mnt, path->dentry, stat);
+		if (!retval && is_sidechannel_device(inode) && !capable_nolog(CAP_MKNOD)) {
+			stat->atime = stat->ctime;
+			stat->mtime = stat->ctime;
+		}
+		return retval;
+	}
 
 	generic_fillattr(inode, stat);
 	return 0;
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 0b45ff4..847de5b 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -41,9 +41,16 @@ void sysfs_warn_dup(struct kernfs_node *parent, const char *name)
 int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
 {
 	struct kernfs_node *parent, *kn;
+	const char *name;
+	umode_t mode = S_IRWXU | S_IRUGO | S_IXUGO;
+#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT
+	const char *parent_name;
+#endif
 
 	BUG_ON(!kobj);
 
+	name = kobject_name(kobj);
+
 	if (kobj->parent)
 		parent = kobj->parent->sd;
 	else
@@ -52,11 +59,22 @@ int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
 	if (!parent)
 		return -ENOENT;
 
-	kn = kernfs_create_dir_ns(parent, kobject_name(kobj),
-				  S_IRWXU | S_IRUGO | S_IXUGO, kobj, ns);
+#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT
+	parent_name = parent->name;
+	mode = S_IRWXU;
+
+	if ((!strcmp(parent_name, "") && (!strcmp(name, "devices") || !strcmp(name, "fs"))) ||
+	    (!strcmp(parent_name, "devices") && !strcmp(name, "system")) ||
+	    (!strcmp(parent_name, "fs") && (!strcmp(name, "selinux") || !strcmp(name, "fuse") || !strcmp(name, "ecryptfs"))) ||
+	    (!strcmp(parent_name, "system") && !strcmp(name, "cpu")))
+		mode = S_IRWXU | S_IRUGO | S_IXUGO;
+#endif
+
+	kn = kernfs_create_dir_ns(parent, name,
+				  mode, kobj, ns);
 	if (IS_ERR(kn)) {
 		if (PTR_ERR(kn) == -EEXIST)
-			sysfs_warn_dup(parent, kobject_name(kobj));
+			sysfs_warn_dup(parent, name);
 		return PTR_ERR(kn);
 	}
 
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 69d4889..a810bd4 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -188,7 +188,7 @@ static inline u32 PDP_swab(u32 x)
 #endif
 }
 
-static inline __u32 fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n)
+static inline __u32 __intentional_overflow(-1) fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n)
 {
 	if (sbi->s_bytesex == BYTESEX_PDP)
 		return PDP_swab((__force __u32)n);
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
index 2290d58..7791371 100644
--- a/fs/ubifs/io.c
+++ b/fs/ubifs/io.c
@@ -155,7 +155,7 @@ int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len)
 	return err;
 }
 
-int ubifs_leb_unmap(struct ubifs_info *c, int lnum)
+int __intentional_overflow(-1) ubifs_leb_unmap(struct ubifs_info *c, int lnum)
 {
 	int err;
 
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 236cd48..a6a4053 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -51,7 +51,6 @@ MODULE_LICENSE("GPL");
 
 static umode_t udf_convert_permissions(struct fileEntry *);
 static int udf_update_inode(struct inode *, int);
-static void udf_fill_inode(struct inode *, struct buffer_head *);
 static int udf_sync_inode(struct inode *inode);
 static int udf_alloc_i_data(struct inode *inode, size_t size);
 static sector_t inode_getblk(struct inode *, sector_t, int *, int *);
@@ -1271,13 +1270,25 @@ update_time:
 	return 0;
 }
 
+/*
+ * Maximum length of linked list formed by ICB hierarchy. The chosen number is
+ * arbitrary - just that we hopefully don't limit any real use of rewritten
+ * inode on write-once media but avoid looping for too long on corrupted media.
+ */
+#define UDF_MAX_ICB_NESTING 1024
+
 static void __udf_read_inode(struct inode *inode)
 {
 	struct buffer_head *bh = NULL;
 	struct fileEntry *fe;
+	struct extendedFileEntry *efe;
 	uint16_t ident;
 	struct udf_inode_info *iinfo = UDF_I(inode);
+	struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
+	unsigned int link_count;
+	unsigned int indirections = 0;
 
+reread:
 	/*
 	 * Set defaults, but the inode is still incomplete!
 	 * Note: get_new_inode() sets the following on a new inode:
@@ -1307,6 +1318,7 @@ static void __udf_read_inode(struct inode *inode)
 	}
 
 	fe = (struct fileEntry *)bh->b_data;
+	efe = (struct extendedFileEntry *)bh->b_data;
 
 	if (fe->icbTag.strategyType == cpu_to_le16(4096)) {
 		struct buffer_head *ibh;
@@ -1314,28 +1326,26 @@ static void __udf_read_inode(struct inode *inode)
 		ibh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 1,
 					&ident);
 		if (ident == TAG_IDENT_IE && ibh) {
-			struct buffer_head *nbh = NULL;
 			struct kernel_lb_addr loc;
 			struct indirectEntry *ie;
 
 			ie = (struct indirectEntry *)ibh->b_data;
 			loc = lelb_to_cpu(ie->indirectICB.extLocation);
 
-			if (ie->indirectICB.extLength &&
-				(nbh = udf_read_ptagged(inode->i_sb, &loc, 0,
-							&ident))) {
-				if (ident == TAG_IDENT_FE ||
-					ident == TAG_IDENT_EFE) {
-					memcpy(&iinfo->i_location,
-						&loc,
-						sizeof(struct kernel_lb_addr));
-					brelse(bh);
-					brelse(ibh);
-					brelse(nbh);
-					__udf_read_inode(inode);
+			if (ie->indirectICB.extLength) {
+				brelse(bh);
+				brelse(ibh);
+				memcpy(&iinfo->i_location, &loc,
+				       sizeof(struct kernel_lb_addr));
+				if (++indirections > UDF_MAX_ICB_NESTING) {
+					udf_err(inode->i_sb,
+						"too many ICBs in ICB hierarchy"
+						" (max %d supported)\n",
+						UDF_MAX_ICB_NESTING);
+					make_bad_inode(inode);
 					return;
 				}
-				brelse(nbh);
+				goto reread;
 			}
 		}
 		brelse(ibh);
@@ -1346,22 +1356,6 @@ static void __udf_read_inode(struct inode *inode)
 		make_bad_inode(inode);
 		return;
 	}
-	udf_fill_inode(inode, bh);
-
-	brelse(bh);
-}
-
-static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
-{
-	struct fileEntry *fe;
-	struct extendedFileEntry *efe;
-	struct udf_sb_info *sbi = UDF_SB(inode->i_sb);
-	struct udf_inode_info *iinfo = UDF_I(inode);
-	unsigned int link_count;
-
-	fe = (struct fileEntry *)bh->b_data;
-	efe = (struct extendedFileEntry *)bh->b_data;
-
 	if (fe->icbTag.strategyType == cpu_to_le16(4))
 		iinfo->i_strat4096 = 0;
 	else /* if (fe->icbTag.strategyType == cpu_to_le16(4096)) */
@@ -1551,6 +1545,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh)
 		} else
 			make_bad_inode(inode);
 	}
+	brelse(bh);
 }
 
 static int udf_alloc_i_data(struct inode *inode, size_t size)
@@ -1664,7 +1659,7 @@ static int udf_update_inode(struct inode *inode, int do_sync)
 		     FE_PERM_U_DELETE | FE_PERM_U_CHATTR));
 	fe->permissions = cpu_to_le32(udfperms);
 
-	if (S_ISDIR(inode->i_mode))
+	if (S_ISDIR(inode->i_mode) && inode->i_nlink > 0)
 		fe->fileLinkCount = cpu_to_le16(inode->i_nlink - 1);
 	else
 		fe->fileLinkCount = cpu_to_le16(inode->i_nlink);
diff --git a/fs/udf/misc.c b/fs/udf/misc.c
index c175b4d..8f36a16 100644
--- a/fs/udf/misc.c
+++ b/fs/udf/misc.c
@@ -289,7 +289,7 @@ void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum,
 
 u8 udf_tag_checksum(const struct tag *t)
 {
-	u8 *data = (u8 *)t;
+	const u8 *data = (const u8 *)t;
 	u8 checksum = 0;
 	int i;
 	for (i = 0; i < sizeof(struct tag); ++i)
diff --git a/fs/ufs/swab.h b/fs/ufs/swab.h
index 8d974c4..b82f6ec 100644
--- a/fs/ufs/swab.h
+++ b/fs/ufs/swab.h
@@ -22,7 +22,7 @@ enum {
 	BYTESEX_BE
 };
 
-static inline u64
+static inline u64 __intentional_overflow(-1)
 fs64_to_cpu(struct super_block *sbp, __fs64 n)
 {
 	if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
@@ -40,7 +40,7 @@ cpu_to_fs64(struct super_block *sbp, u64 n)
 		return (__force __fs64)cpu_to_be64(n);
 }
 
-static inline u32
+static inline u32 __intentional_overflow(-1)
 fs32_to_cpu(struct super_block *sbp, __fs32 n)
 {
 	if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
diff --git a/fs/utimes.c b/fs/utimes.c
index aa138d6..5f3a811 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -1,6 +1,7 @@
 #include <linux/compiler.h>
 #include <linux/file.h>
 #include <linux/fs.h>
+#include <linux/security.h>
 #include <linux/linkage.h>
 #include <linux/mount.h>
 #include <linux/namei.h>
@@ -103,6 +104,12 @@ static int utimes_common(struct path *path, struct timespec *times)
 		}
 	}
 retry_deleg:
+
+	if (!gr_acl_handle_utime(path->dentry, path->mnt)) {
+		error = -EACCES;
+		goto mnt_drop_write_and_out;
+	}
+
 	mutex_lock(&inode->i_mutex);
 	error = notify_change(path->dentry, &newattrs, &delegated_inode);
 	mutex_unlock(&inode->i_mutex);
diff --git a/fs/xattr.c b/fs/xattr.c
index c69e6d4..cc56af5 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -227,6 +227,27 @@ int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
 	return rc;
 }
 
+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
+ssize_t
+pax_getxattr(struct dentry *dentry, void *value, size_t size)
+{
+	struct inode *inode = dentry->d_inode;
+	ssize_t error;
+
+	error = inode_permission(inode, MAY_EXEC);
+	if (error)
+		return error;
+
+	if (inode->i_op->getxattr)
+		error = inode->i_op->getxattr(dentry, XATTR_NAME_PAX_FLAGS, value, size);
+	else
+		error = -EOPNOTSUPP;
+
+	return error;
+}
+EXPORT_SYMBOL(pax_getxattr);
+#endif
+
 ssize_t
 vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
 {
@@ -319,7 +340,7 @@ EXPORT_SYMBOL_GPL(vfs_removexattr);
  * Extended attribute SET operations
  */
 static long
-setxattr(struct dentry *d, const char __user *name, const void __user *value,
+setxattr(struct path *path, const char __user *name, const void __user *value,
 	 size_t size, int flags)
 {
 	int error;
@@ -355,7 +376,12 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
 			posix_acl_fix_xattr_from_user(kvalue, size);
 	}
 
-	error = vfs_setxattr(d, kname, kvalue, size, flags);
+	if (!gr_acl_handle_setxattr(path->dentry, path->mnt)) {
+		error = -EACCES;
+		goto out;
+	}
+
+	error = vfs_setxattr(path->dentry, kname, kvalue, size, flags);
 out:
 	if (vvalue)
 		vfree(vvalue);
@@ -377,7 +403,7 @@ retry:
 		return error;
 	error = mnt_want_write(path.mnt);
 	if (!error) {
-		error = setxattr(path.dentry, name, value, size, flags);
+		error = setxattr(&path, name, value, size, flags);
 		mnt_drop_write(path.mnt);
 	}
 	path_put(&path);
@@ -401,7 +427,7 @@ retry:
 		return error;
 	error = mnt_want_write(path.mnt);
 	if (!error) {
-		error = setxattr(path.dentry, name, value, size, flags);
+		error = setxattr(&path, name, value, size, flags);
 		mnt_drop_write(path.mnt);
 	}
 	path_put(&path);
@@ -416,16 +442,14 @@ SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name,
 		const void __user *,value, size_t, size, int, flags)
 {
 	struct fd f = fdget(fd);
-	struct dentry *dentry;
 	int error = -EBADF;
 
 	if (!f.file)
 		return error;
-	dentry = f.file->f_path.dentry;
-	audit_inode(NULL, dentry, 0);
+	audit_inode(NULL, f.file->f_path.dentry, 0);
 	error = mnt_want_write_file(f.file);
 	if (!error) {
-		error = setxattr(dentry, name, value, size, flags);
+		error = setxattr(&f.file->f_path, name, value, size, flags);
 		mnt_drop_write_file(f.file);
 	}
 	fdput(f);
@@ -626,7 +650,7 @@ SYSCALL_DEFINE3(flistxattr, int, fd, char __user *, list, size_t, size)
  * Extended attribute REMOVE operations
  */
 static long
-removexattr(struct dentry *d, const char __user *name)
+removexattr(struct path *path, const char __user *name)
 {
 	int error;
 	char kname[XATTR_NAME_MAX + 1];
@@ -637,7 +661,10 @@ removexattr(struct dentry *d, const char __user *name)
 	if (error < 0)
 		return error;
 
-	return vfs_removexattr(d, kname);
+	if (!gr_acl_handle_removexattr(path->dentry, path->mnt))
+		return -EACCES;
+
+	return vfs_removexattr(path->dentry, kname);
 }
 
 SYSCALL_DEFINE2(removexattr, const char __user *, pathname,
@@ -652,7 +679,7 @@ retry:
 		return error;
 	error = mnt_want_write(path.mnt);
 	if (!error) {
-		error = removexattr(path.dentry, name);
+		error = removexattr(&path, name);
 		mnt_drop_write(path.mnt);
 	}
 	path_put(&path);
@@ -675,7 +702,7 @@ retry:
 		return error;
 	error = mnt_want_write(path.mnt);
 	if (!error) {
-		error = removexattr(path.dentry, name);
+		error = removexattr(&path, name);
 		mnt_drop_write(path.mnt);
 	}
 	path_put(&path);
@@ -689,16 +716,16 @@ retry:
 SYSCALL_DEFINE2(fremovexattr, int, fd, const char __user *, name)
 {
 	struct fd f = fdget(fd);
-	struct dentry *dentry;
+	struct path *path;
 	int error = -EBADF;
 
 	if (!f.file)
 		return error;
-	dentry = f.file->f_path.dentry;
-	audit_inode(NULL, dentry, 0);
+	path = &f.file->f_path;
+	audit_inode(NULL, path->dentry, 0);
 	error = mnt_want_write_file(f.file);
 	if (!error) {
-		error = removexattr(dentry, name);
+		error = removexattr(path, name);
 		mnt_drop_write_file(f.file);
 	}
 	fdput(f);
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 75c3fe5..b0f6bbe 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -583,7 +583,7 @@ xfs_bmap_validate_ret(
 
 #else
 #define xfs_bmap_check_leaf_extents(cur, ip, whichfork)		do { } while (0)
-#define	xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)
+#define	xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)	do { } while (0)
 #endif /* DEBUG */
 
 /*
diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c
index 48e99af..54ebae3 100644
--- a/fs/xfs/xfs_dir2_readdir.c
+++ b/fs/xfs/xfs_dir2_readdir.c
@@ -159,7 +159,12 @@ xfs_dir2_sf_getdents(
 		ino = dp->d_ops->sf_get_ino(sfp, sfep);
 		filetype = dp->d_ops->sf_get_ftype(sfep);
 		ctx->pos = off & 0x7fffffff;
-		if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, ino,
+		if (dp->i_df.if_u1.if_data == dp->i_df.if_u2.if_inline_data) {
+			char name[sfep->namelen];
+			memcpy(name, sfep->name, sfep->namelen);
+			if (!dir_emit(ctx, name, sfep->namelen, ino, xfs_dir3_get_dtype(dp->i_mount, filetype)))
+				return 0;
+		} else if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, ino,
 			    xfs_dir3_get_dtype(dp->i_mount, filetype)))
 			return 0;
 		sfep = dp->d_ops->sf_nextentry(sfp, sfep);
diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 8bc1bbc..0d6911b 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -122,7 +122,7 @@ xfs_find_handle(
 	}
 
 	error = -EFAULT;
-	if (copy_to_user(hreq->ohandle, &handle, hsize) ||
+	if (hsize > sizeof handle || copy_to_user(hreq->ohandle, &handle, hsize) ||
 	    copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
 		goto out_put;
 
diff --git a/grsecurity/Kconfig b/grsecurity/Kconfig
new file mode 100644
index 0000000..27cec32
--- /dev/null
+++ b/grsecurity/Kconfig
@@ -0,0 +1,1166 @@
+#
+# grecurity configuration
+#
+menu "Memory Protections"
+depends on GRKERNSEC
+
+config GRKERNSEC_KMEM
+	bool "Deny reading/writing to /dev/kmem, /dev/mem, and /dev/port"
+	default y if GRKERNSEC_CONFIG_AUTO
+	select STRICT_DEVMEM if (X86 || ARM || TILE || S390)
+	help
+	  If you say Y here, /dev/kmem and /dev/mem won't be allowed to
+	  be written to or read from to modify or leak the contents of the running
+	  kernel.  /dev/port will also not be allowed to be opened, writing to
+	  /dev/cpu/*/msr will be prevented, and support for kexec will be removed.
+	  If you have module support disabled, enabling this will close up several
+	  ways that are currently used to insert malicious code into the running
+	  kernel.
+
+	  Even with this feature enabled, we still highly recommend that
+	  you use the RBAC system, as it is still possible for an attacker to
+	  modify the running kernel through other more obscure methods.
+
+	  It is highly recommended that you say Y here if you meet all the
+	  conditions above.
+
+config GRKERNSEC_VM86
+	bool "Restrict VM86 mode"
+	default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER)
+	depends on X86_32
+
+	help
+	  If you say Y here, only processes with CAP_SYS_RAWIO will be able to
+	  make use of a special execution mode on 32bit x86 processors called
+	  Virtual 8086 (VM86) mode.  XFree86 may need vm86 mode for certain
+	  video cards and will still work with this option enabled.  The purpose
+	  of the option is to prevent exploitation of emulation errors in
+	  virtualization of vm86 mode like the one discovered in VMWare in 2009.
+	  Nearly all users should be able to enable this option.
+
+config GRKERNSEC_IO
+	bool "Disable privileged I/O"
+	default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER)
+	depends on X86
+	select RTC_CLASS
+	select RTC_INTF_DEV
+	select RTC_DRV_CMOS
+
+	help
+	  If you say Y here, all ioperm and iopl calls will return an error.
+	  Ioperm and iopl can be used to modify the running kernel.
+	  Unfortunately, some programs need this access to operate properly,
+	  the most notable of which are XFree86 and hwclock.  hwclock can be
+	  remedied by having RTC support in the kernel, so real-time 
+	  clock support is enabled if this option is enabled, to ensure 
+	  that hwclock operates correctly.  If hwclock still does not work,
+	  either update udev or symlink /dev/rtc to /dev/rtc0.
+
+	  If you're using XFree86 or a version of Xorg from 2012 or earlier,
+	  you may not be able to boot into a graphical environment with this
+	  option enabled.  In this case, you should use the RBAC system instead.
+
+config GRKERNSEC_JIT_HARDEN
+	bool "Harden BPF JIT against spray attacks"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on BPF_JIT && X86
+	help
+	  If you say Y here, the native code generated by the kernel's Berkeley
+	  Packet Filter (BPF) JIT engine will be hardened against JIT-spraying
+	  attacks that attempt to fit attacker-beneficial instructions in
+	  32bit immediate fields of JIT-generated native instructions.  The
+	  attacker will generally aim to cause an unintended instruction sequence
+	  of JIT-generated native code to execute by jumping into the middle of
+	  a generated instruction.  This feature effectively randomizes the 32bit
+	  immediate constants present in the generated code to thwart such attacks.
+
+	  If you're using KERNEXEC, it's recommended that you enable this option
+	  to supplement the hardening of the kernel.
+  
+config GRKERNSEC_PERF_HARDEN
+	bool "Disable unprivileged PERF_EVENTS usage by default"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on PERF_EVENTS
+	help
+	  If you say Y here, the range of acceptable values for the
+	  /proc/sys/kernel/perf_event_paranoid sysctl will be expanded to allow and
+	  default to a new value: 3.  When the sysctl is set to this value, no
+	  unprivileged use of the PERF_EVENTS syscall interface will be permitted.
+
+	  Though PERF_EVENTS can be used legitimately for performance monitoring
+	  and low-level application profiling, it is forced on regardless of
+	  configuration, has been at fault for several vulnerabilities, and
+	  creates new opportunities for side channels and other information leaks.
+
+	  This feature puts PERF_EVENTS into a secure default state and permits
+	  the administrator to change out of it temporarily if unprivileged
+	  application profiling is needed.
+
+config GRKERNSEC_RAND_THREADSTACK
+	bool "Insert random gaps between thread stacks"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on PAX_RANDMMAP && !PPC
+	help
+	  If you say Y here, a random-sized gap will be enforced between allocated
+	  thread stacks.  Glibc's NPTL and other threading libraries that
+	  pass MAP_STACK to the kernel for thread stack allocation are supported.
+	  The implementation currently provides 8 bits of entropy for the gap.
+
+	  Many distributions do not compile threaded remote services with the
+	  -fstack-check argument to GCC, causing the variable-sized stack-based
+	  allocator, alloca(), to not probe the stack on allocation.  This
+	  permits an unbounded alloca() to skip over any guard page and potentially
+	  modify another thread's stack reliably.  An enforced random gap
+	  reduces the reliability of such an attack and increases the chance
+	  that such a read/write to another thread's stack instead lands in
+	  an unmapped area, causing a crash and triggering grsecurity's
+	  anti-bruteforcing logic.
+
+config GRKERNSEC_PROC_MEMMAP
+	bool "Harden ASLR against information leaks and entropy reduction"
+	default y if (GRKERNSEC_CONFIG_AUTO || PAX_NOEXEC || PAX_ASLR)
+	depends on PAX_NOEXEC || PAX_ASLR
+	help
+	  If you say Y here, the /proc/<pid>/maps and /proc/<pid>/stat files will
+	  give no information about the addresses of its mappings if
+	  PaX features that rely on random addresses are enabled on the task.
+	  In addition to sanitizing this information and disabling other
+	  dangerous sources of information, this option causes reads of sensitive
+	  /proc/<pid> entries where the file descriptor was opened in a different
+	  task than the one performing the read.  Such attempts are logged.
+	  This option also limits argv/env strings for suid/sgid binaries
+	  to 512KB to prevent a complete exhaustion of the stack entropy provided
+	  by ASLR.  Finally, it places an 8MB stack resource limit on suid/sgid
+	  binaries to prevent alternative mmap layouts from being abused.
+
+	  If you use PaX it is essential that you say Y here as it closes up
+	  several holes that make full ASLR useless locally.
+
+
+config GRKERNSEC_KSTACKOVERFLOW
+	bool "Prevent kernel stack overflows"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on !IA64 && 64BIT
+	help
+	  If you say Y here, the kernel's process stacks will be allocated
+	  with vmalloc instead of the kernel's default allocator.  This
+	  introduces guard pages that in combination with the alloca checking
+	  of the STACKLEAK feature prevents all forms of kernel process stack
+	  overflow abuse.  Note that this is different from kernel stack
+	  buffer overflows.
+
+config GRKERNSEC_BRUTE
+	bool "Deter exploit bruteforcing"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, attempts to bruteforce exploits against forking
+	  daemons such as apache or sshd, as well as against suid/sgid binaries
+	  will be deterred.  When a child of a forking daemon is killed by PaX
+	  or crashes due to an illegal instruction or other suspicious signal,
+	  the parent process will be delayed 30 seconds upon every subsequent
+	  fork until the administrator is able to assess the situation and
+	  restart the daemon.
+	  In the suid/sgid case, the attempt is logged, the user has all their
+	  existing instances of the suid/sgid binary terminated and will
+	  be unable to execute any suid/sgid binaries for 15 minutes.
+
+	  It is recommended that you also enable signal logging in the auditing
+	  section so that logs are generated when a process triggers a suspicious
+	  signal.
+	  If the sysctl option is enabled, a sysctl option with name
+	  "deter_bruteforce" is created.
+
+config GRKERNSEC_MODHARDEN
+	bool "Harden module auto-loading"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on MODULES
+	help
+	  If you say Y here, module auto-loading in response to use of some
+	  feature implemented by an unloaded module will be restricted to
+	  root users.  Enabling this option helps defend against attacks 
+	  by unprivileged users who abuse the auto-loading behavior to 
+	  cause a vulnerable module to load that is then exploited.
+
+	  If this option prevents a legitimate use of auto-loading for a 
+	  non-root user, the administrator can execute modprobe manually 
+	  with the exact name of the module mentioned in the alert log.
+	  Alternatively, the administrator can add the module to the list
+	  of modules loaded at boot by modifying init scripts.
+
+	  Modification of init scripts will most likely be needed on 
+	  Ubuntu servers with encrypted home directory support enabled,
+	  as the first non-root user logging in will cause the ecb(aes),
+	  ecb(aes)-all, cbc(aes), and cbc(aes)-all  modules to be loaded.
+
+config GRKERNSEC_HIDESYM
+	bool "Hide kernel symbols"
+	default y if GRKERNSEC_CONFIG_AUTO
+	select PAX_USERCOPY_SLABS
+	help
+	  If you say Y here, getting information on loaded modules, and
+	  displaying all kernel symbols through a syscall will be restricted
+	  to users with CAP_SYS_MODULE.  For software compatibility reasons,
+	  /proc/kallsyms will be restricted to the root user.  The RBAC
+	  system can hide that entry even from root.
+
+	  This option also prevents leaking of kernel addresses through
+	  several /proc entries.
+
+	  Note that this option is only effective provided the following
+	  conditions are met:
+	  1) The kernel using grsecurity is not precompiled by some distribution
+	  2) You have also enabled GRKERNSEC_DMESG
+	  3) You are using the RBAC system and hiding other files such as your
+	     kernel image and System.map.  Alternatively, enabling this option
+	     causes the permissions on /boot, /lib/modules, and the kernel
+	     source directory to change at compile time to prevent 
+	     reading by non-root users.
+	  If the above conditions are met, this option will aid in providing a
+	  useful protection against local kernel exploitation of overflows
+	  and arbitrary read/write vulnerabilities.
+
+	  It is highly recommended that you enable GRKERNSEC_PERF_HARDEN
+	  in addition to this feature.
+
+config GRKERNSEC_RANDSTRUCT
+	bool "Randomize layout of sensitive kernel structures"
+	default y if GRKERNSEC_CONFIG_AUTO
+	select GRKERNSEC_HIDESYM
+	select MODVERSIONS if MODULES
+	help
+	  If you say Y here, the layouts of a number of sensitive kernel
+	  structures (task, fs, cred, etc) and all structures composed entirely
+	  of function pointers (aka "ops" structs) will be randomized at compile-time.
+	  This can introduce the requirement of an additional infoleak
+	  vulnerability for exploits targeting these structure types.
+
+	  Enabling this feature will introduce some performance impact, slightly
+	  increase memory usage, and prevent the use of forensic tools like
+	  Volatility against the system (unless the kernel source tree isn't
+	  cleaned after kernel installation).
+
+	  The seed used for compilation is located at tools/gcc/randomize_layout_seed.h.
+	  It remains after a make clean to allow for external modules to be compiled
+	  with the existing seed and will be removed by a make mrproper or
+	  make distclean.
+
+          Note that the implementation requires gcc 4.6.4. or newer.  You may need
+	  to install the supporting headers explicitly in addition to the normal
+	  gcc package.
+
+config GRKERNSEC_RANDSTRUCT_PERFORMANCE
+	bool "Use cacheline-aware structure randomization"
+	depends on GRKERNSEC_RANDSTRUCT
+	default y if GRKERNSEC_CONFIG_PRIORITY_PERF
+	help
+	  If you say Y here, the RANDSTRUCT randomization will make a best effort
+	  at restricting randomization to cacheline-sized groups of elements.  It
+	  will further not randomize bitfields in structures.  This reduces the
+	  performance hit of RANDSTRUCT at the cost of weakened randomization.
+
+config GRKERNSEC_KERN_LOCKOUT
+	bool "Active kernel exploit response"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on X86 || ARM || PPC || SPARC
+	help
+	  If you say Y here, when a PaX alert is triggered due to suspicious
+	  activity in the kernel (from KERNEXEC/UDEREF/USERCOPY)
+	  or an OOPS occurs due to bad memory accesses, instead of just
+	  terminating the offending process (and potentially allowing
+	  a subsequent exploit from the same user), we will take one of two
+	  actions:
+	   If the user was root, we will panic the system
+	   If the user was non-root, we will log the attempt, terminate
+	   all processes owned by the user, then prevent them from creating
+	   any new processes until the system is restarted
+	  This deters repeated kernel exploitation/bruteforcing attempts
+	  and is useful for later forensics.
+
+config GRKERNSEC_OLD_ARM_USERLAND
+	bool "Old ARM userland compatibility"
+	depends on ARM && (CPU_V6 || CPU_V6K || CPU_V7)
+	help
+	  If you say Y here, stubs of executable code to perform such operations
+	  as "compare-exchange" will be placed at fixed locations in the ARM vector
+	  table.  This is unfortunately needed for old ARM userland meant to run
+	  across a wide range of processors.  Without this option enabled,
+	  the get_tls and data memory barrier stubs will be emulated by the kernel,
+	  which is enough for Linaro userlands or other userlands designed for v6
+	  and newer ARM CPUs.  It's recommended that you try without this option enabled
+	  first, and only enable it if your userland does not boot (it will likely fail
+	  at init time).
+
+endmenu
+menu "Role Based Access Control Options"
+depends on GRKERNSEC
+
+config GRKERNSEC_RBAC_DEBUG
+	bool
+
+config GRKERNSEC_NO_RBAC
+	bool "Disable RBAC system"
+	help
+	  If you say Y here, the /dev/grsec device will be removed from the kernel,
+	  preventing the RBAC system from being enabled.  You should only say Y
+	  here if you have no intention of using the RBAC system, so as to prevent
+	  an attacker with root access from misusing the RBAC system to hide files
+	  and processes when loadable module support and /dev/[k]mem have been
+	  locked down.
+
+config GRKERNSEC_ACL_HIDEKERN
+	bool "Hide kernel processes"
+	help
+	  If you say Y here, all kernel threads will be hidden to all
+	  processes but those whose subject has the "view hidden processes"
+	  flag.
+
+config GRKERNSEC_ACL_MAXTRIES
+	int "Maximum tries before password lockout"
+	default 3
+	help
+	  This option enforces the maximum number of times a user can attempt
+	  to authorize themselves with the grsecurity RBAC system before being
+	  denied the ability to attempt authorization again for a specified time.
+	  The lower the number, the harder it will be to brute-force a password.
+
+config GRKERNSEC_ACL_TIMEOUT
+	int "Time to wait after max password tries, in seconds"
+	default 30
+	help
+	  This option specifies the time the user must wait after attempting to
+	  authorize to the RBAC system with the maximum number of invalid
+	  passwords.  The higher the number, the harder it will be to brute-force
+	  a password.
+
+endmenu
+menu "Filesystem Protections"
+depends on GRKERNSEC
+
+config GRKERNSEC_PROC
+	bool "Proc restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, the permissions of the /proc filesystem
+	  will be altered to enhance system security and privacy.  You MUST
+  	  choose either a user only restriction or a user and group restriction.
+	  Depending upon the option you choose, you can either restrict users to
+	  see only the processes they themselves run, or choose a group that can
+	  view all processes and files normally restricted to root if you choose
+	  the "restrict to user only" option.  NOTE: If you're running identd or
+	  ntpd as a non-root user, you will have to run it as the group you
+	  specify here.
+
+config GRKERNSEC_PROC_USER
+	bool "Restrict /proc to user only"
+	depends on GRKERNSEC_PROC
+	help
+	  If you say Y here, non-root users will only be able to view their own
+	  processes, and restricts them from viewing network-related information,
+	  and viewing kernel symbol and module information.
+
+config GRKERNSEC_PROC_USERGROUP
+	bool "Allow special group"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_PROC && !GRKERNSEC_PROC_USER
+	help
+	  If you say Y here, you will be able to select a group that will be
+	  able to view all processes and network-related information.  If you've
+	  enabled GRKERNSEC_HIDESYM, kernel and symbol information may still
+	  remain hidden.  This option is useful if you want to run identd as
+	  a non-root user.  The group you select may also be chosen at boot time
+	  via "grsec_proc_gid=" on the kernel commandline.
+
+config GRKERNSEC_PROC_GID
+	int "GID for special group"
+	depends on GRKERNSEC_PROC_USERGROUP
+	default 1001
+
+config GRKERNSEC_PROC_ADD
+	bool "Additional restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_PROC_USER || GRKERNSEC_PROC_USERGROUP
+	help
+	  If you say Y here, additional restrictions will be placed on
+	  /proc that keep normal users from viewing device information and 
+	  slabinfo information that could be useful for exploits.
+
+config GRKERNSEC_LINK
+	bool "Linking restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, /tmp race exploits will be prevented, since users
+	  will no longer be able to follow symlinks owned by other users in
+	  world-writable +t directories (e.g. /tmp), unless the owner of the
+	  symlink is the owner of the directory. users will also not be
+	  able to hardlink to files they do not own.  If the sysctl option is
+	  enabled, a sysctl option with name "linking_restrictions" is created.
+
+config GRKERNSEC_SYMLINKOWN
+	bool "Kernel-enforced SymlinksIfOwnerMatch"
+	default y if GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER
+	help
+	  Apache's SymlinksIfOwnerMatch option has an inherent race condition
+	  that prevents it from being used as a security feature.  As Apache
+	  verifies the symlink by performing a stat() against the target of
+	  the symlink before it is followed, an attacker can setup a symlink
+	  to point to a same-owned file, then replace the symlink with one
+	  that targets another user's file just after Apache "validates" the
+	  symlink -- a classic TOCTOU race.  If you say Y here, a complete,
+	  race-free replacement for Apache's "SymlinksIfOwnerMatch" option
+	  will be in place for the group you specify. If the sysctl option
+	  is enabled, a sysctl option with name "enforce_symlinksifowner" is
+	  created.
+
+config GRKERNSEC_SYMLINKOWN_GID
+	int "GID for users with kernel-enforced SymlinksIfOwnerMatch"
+	depends on GRKERNSEC_SYMLINKOWN
+	default 1006
+	help
+	  Setting this GID determines what group kernel-enforced
+	  SymlinksIfOwnerMatch will be enabled for.  If the sysctl option
+	  is enabled, a sysctl option with name "symlinkown_gid" is created.
+
+config GRKERNSEC_FIFO
+	bool "FIFO restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, users will not be able to write to FIFOs they don't
+	  own in world-writable +t directories (e.g. /tmp), unless the owner of
+	  the FIFO is the same owner of the directory it's held in.  If the sysctl
+	  option is enabled, a sysctl option with name "fifo_restrictions" is
+	  created.
+
+config GRKERNSEC_SYSFS_RESTRICT
+	bool "Sysfs/debugfs restriction"
+	default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER)
+	depends on SYSFS
+	help
+	  If you say Y here, sysfs (the pseudo-filesystem mounted at /sys) and
+	  any filesystem normally mounted under it (e.g. debugfs) will be
+	  mostly accessible only by root.  These filesystems generally provide access
+	  to hardware and debug information that isn't appropriate for unprivileged
+	  users of the system.  Sysfs and debugfs have also become a large source
+	  of new vulnerabilities, ranging from infoleaks to local compromise.
+	  There has been very little oversight with an eye toward security involved
+	  in adding new exporters of information to these filesystems, so their
+	  use is discouraged.
+	  For reasons of compatibility, a few directories have been whitelisted
+	  for access by non-root users:
+	  /sys/fs/selinux
+	  /sys/fs/fuse
+	  /sys/devices/system/cpu
+
+config GRKERNSEC_ROFS
+	bool "Runtime read-only mount protection"
+	depends on SYSCTL
+	help
+	  If you say Y here, a sysctl option with name "romount_protect" will
+	  be created.  By setting this option to 1 at runtime, filesystems
+	  will be protected in the following ways:
+	  * No new writable mounts will be allowed
+	  * Existing read-only mounts won't be able to be remounted read/write
+	  * Write operations will be denied on all block devices
+	  This option acts independently of grsec_lock: once it is set to 1,
+	  it cannot be turned off.  Therefore, please be mindful of the resulting
+	  behavior if this option is enabled in an init script on a read-only
+	  filesystem.
+	  Also be aware that as with other root-focused features, GRKERNSEC_KMEM
+	  and GRKERNSEC_IO should be enabled and module loading disabled via
+	  config or at runtime.
+	  This feature is mainly intended for secure embedded systems.
+	  
+
+config GRKERNSEC_DEVICE_SIDECHANNEL
+	bool "Eliminate stat/notify-based device sidechannels"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, timing analyses on block or character
+	  devices like /dev/ptmx using stat or inotify/dnotify/fanotify
+	  will be thwarted for unprivileged users.  If a process without
+	  CAP_MKNOD stats such a device, the last access and last modify times
+	  will match the device's create time.  No access or modify events
+	  will be triggered through inotify/dnotify/fanotify for such devices.
+	  This feature will prevent attacks that may at a minimum
+	  allow an attacker to determine the administrator's password length.
+
+config GRKERNSEC_CHROOT
+	bool "Chroot jail restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, you will be able to choose several options that will
+	  make breaking out of a chrooted jail much more difficult.  If you
+	  encounter no software incompatibilities with the following options, it
+	  is recommended that you enable each one.
+
+	  Note that the chroot restrictions are not intended to apply to "chroots"
+	  to directories that are simple bind mounts of the global root filesystem.
+	  For several other reasons, a user shouldn't expect any significant
+	  security by performing such a chroot.
+
+config GRKERNSEC_CHROOT_MOUNT
+	bool "Deny mounts"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to
+	  mount or remount filesystems.  If the sysctl option is enabled, a
+	  sysctl option with name "chroot_deny_mount" is created.
+
+config GRKERNSEC_CHROOT_DOUBLE
+	bool "Deny double-chroots"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to chroot
+	  again outside the chroot.  This is a widely used method of breaking
+	  out of a chroot jail and should not be allowed.  If the sysctl 
+	  option is enabled, a sysctl option with name 
+	  "chroot_deny_chroot" is created.
+
+config GRKERNSEC_CHROOT_PIVOT
+	bool "Deny pivot_root in chroot"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to use
+	  a function called pivot_root() that was introduced in Linux 2.3.41.  It
+	  works similar to chroot in that it changes the root filesystem.  This
+	  function could be misused in a chrooted process to attempt to break out
+	  of the chroot, and therefore should not be allowed.  If the sysctl
+	  option is enabled, a sysctl option with name "chroot_deny_pivot" is
+	  created.
+
+config GRKERNSEC_CHROOT_CHDIR
+	bool "Enforce chdir(\"/\") on all chroots"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, the current working directory of all newly-chrooted
+	  applications will be set to the the root directory of the chroot.
+	  The man page on chroot(2) states:
+	  Note that this call does not change  the  current  working
+	  directory,  so  that `.' can be outside the tree rooted at
+	  `/'.  In particular, the  super-user  can  escape  from  a
+	  `chroot jail' by doing `mkdir foo; chroot foo; cd ..'.
+
+	  It is recommended that you say Y here, since it's not known to break
+	  any software.  If the sysctl option is enabled, a sysctl option with
+	  name "chroot_enforce_chdir" is created.
+
+config GRKERNSEC_CHROOT_CHMOD
+	bool "Deny (f)chmod +s"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to chmod
+	  or fchmod files to make them have suid or sgid bits.  This protects
+	  against another published method of breaking a chroot.  If the sysctl
+	  option is enabled, a sysctl option with name "chroot_deny_chmod" is
+	  created.
+
+config GRKERNSEC_CHROOT_FCHDIR
+	bool "Deny fchdir and fhandle out of chroot"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, a well-known method of breaking chroots by fchdir'ing
+	  to a file descriptor of the chrooting process that points to a directory
+	  outside the filesystem will be stopped.  Additionally, this option prevents
+	  use of the recently-created syscall for opening files by a guessable "file
+	  handle" inside a chroot.  If the sysctl option is enabled, a sysctl option
+	  with name "chroot_deny_fchdir" is created.
+
+config GRKERNSEC_CHROOT_MKNOD
+	bool "Deny mknod"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be allowed to
+	  mknod.  The problem with using mknod inside a chroot is that it
+	  would allow an attacker to create a device entry that is the same
+	  as one on the physical root of your system, which could range from
+	  anything from the console device to a device for your harddrive (which
+	  they could then use to wipe the drive or steal data).  It is recommended
+	  that you say Y here, unless you run into software incompatibilities.
+	  If the sysctl option is enabled, a sysctl option with name
+	  "chroot_deny_mknod" is created.
+
+config GRKERNSEC_CHROOT_SHMAT
+	bool "Deny shmat() out of chroot"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to attach
+	  to shared memory segments that were created outside of the chroot jail.
+	  It is recommended that you say Y here.  If the sysctl option is enabled,
+	  a sysctl option with name "chroot_deny_shmat" is created.
+
+config GRKERNSEC_CHROOT_UNIX
+	bool "Deny access to abstract AF_UNIX sockets out of chroot"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to
+	  connect to abstract (meaning not belonging to a filesystem) Unix
+	  domain sockets that were bound outside of a chroot.  It is recommended
+	  that you say Y here.  If the sysctl option is enabled, a sysctl option
+	  with name "chroot_deny_unix" is created.
+
+config GRKERNSEC_CHROOT_FINDTASK
+	bool "Protect outside processes"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to
+	  kill, send signals with fcntl, ptrace, capget, getpgid, setpgid, 
+	  getsid, or view any process outside of the chroot.  If the sysctl
+	  option is enabled, a sysctl option with name "chroot_findtask" is
+	  created.
+
+config GRKERNSEC_CHROOT_NICE
+	bool "Restrict priority changes"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, processes inside a chroot will not be able to raise
+	  the priority of processes in the chroot, or alter the priority of
+	  processes outside the chroot.  This provides more security than simply
+	  removing CAP_SYS_NICE from the process' capability set.  If the
+	  sysctl option is enabled, a sysctl option with name "chroot_restrict_nice"
+	  is created.
+
+config GRKERNSEC_CHROOT_SYSCTL
+	bool "Deny sysctl writes"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, an attacker in a chroot will not be able to
+	  write to sysctl entries, either by sysctl(2) or through a /proc
+	  interface.  It is strongly recommended that you say Y here. If the
+	  sysctl option is enabled, a sysctl option with name
+	  "chroot_deny_sysctl" is created.
+
+config GRKERNSEC_CHROOT_CAPS
+	bool "Capability restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT
+	help
+	  If you say Y here, the capabilities on all processes within a
+	  chroot jail will be lowered to stop module insertion, raw i/o,
+	  system and net admin tasks, rebooting the system, modifying immutable
+	  files, modifying IPC owned by another, and changing the system time.
+	  This is left an option because it can break some apps.  Disable this
+	  if your chrooted apps are having problems performing those kinds of
+	  tasks.  If the sysctl option is enabled, a sysctl option with
+	  name "chroot_caps" is created.
+
+config GRKERNSEC_CHROOT_INITRD
+	bool "Exempt initrd tasks from restrictions"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_CHROOT && BLK_DEV_INITRD
+	help
+	  If you say Y here, tasks started prior to init will be exempted from
+	  grsecurity's chroot restrictions.  This option is mainly meant to
+	  resolve Plymouth's performing privileged operations unnecessarily
+	  in a chroot.
+
+endmenu
+menu "Kernel Auditing"
+depends on GRKERNSEC
+
+config GRKERNSEC_AUDIT_GROUP
+	bool "Single group for auditing"
+	help
+	  If you say Y here, the exec and chdir logging features will only operate
+	  on a group you specify.  This option is recommended if you only want to
+	  watch certain users instead of having a large amount of logs from the
+	  entire system.  If the sysctl option is enabled, a sysctl option with
+	  name "audit_group" is created.
+
+config GRKERNSEC_AUDIT_GID
+	int "GID for auditing"
+	depends on GRKERNSEC_AUDIT_GROUP
+	default 1007
+
+config GRKERNSEC_EXECLOG
+	bool "Exec logging"
+	help
+	  If you say Y here, all execve() calls will be logged (since the
+	  other exec*() calls are frontends to execve(), all execution
+	  will be logged).  Useful for shell-servers that like to keep track
+	  of their users.  If the sysctl option is enabled, a sysctl option with
+	  name "exec_logging" is created.
+	  WARNING: This option when enabled will produce a LOT of logs, especially
+	  on an active system.
+
+config GRKERNSEC_RESLOG
+	bool "Resource logging"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, all attempts to overstep resource limits will
+	  be logged with the resource name, the requested size, and the current
+	  limit.  It is highly recommended that you say Y here.  If the sysctl
+	  option is enabled, a sysctl option with name "resource_logging" is
+	  created.  If the RBAC system is enabled, the sysctl value is ignored.
+
+config GRKERNSEC_CHROOT_EXECLOG
+	bool "Log execs within chroot"
+	help
+	  If you say Y here, all executions inside a chroot jail will be logged
+	  to syslog.  This can cause a large amount of logs if certain
+	  applications (eg. djb's daemontools) are installed on the system, and
+	  is therefore left as an option.  If the sysctl option is enabled, a
+	  sysctl option with name "chroot_execlog" is created.
+
+config GRKERNSEC_AUDIT_PTRACE
+	bool "Ptrace logging"
+	help
+	  If you say Y here, all attempts to attach to a process via ptrace
+	  will be logged.  If the sysctl option is enabled, a sysctl option
+	  with name "audit_ptrace" is created.
+
+config GRKERNSEC_AUDIT_CHDIR
+	bool "Chdir logging"
+	help
+	  If you say Y here, all chdir() calls will be logged.  If the sysctl
+ 	  option is enabled, a sysctl option with name "audit_chdir" is created.
+
+config GRKERNSEC_AUDIT_MOUNT
+	bool "(Un)Mount logging"
+	help
+	  If you say Y here, all mounts and unmounts will be logged.  If the
+	  sysctl option is enabled, a sysctl option with name "audit_mount" is
+	  created.
+
+config GRKERNSEC_SIGNAL
+	bool "Signal logging"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, certain important signals will be logged, such as
+	  SIGSEGV, which will as a result inform you of when a error in a program
+	  occurred, which in some cases could mean a possible exploit attempt.
+	  If the sysctl option is enabled, a sysctl option with name
+	  "signal_logging" is created.
+
+config GRKERNSEC_FORKFAIL
+	bool "Fork failure logging"
+	help
+	  If you say Y here, all failed fork() attempts will be logged.
+	  This could suggest a fork bomb, or someone attempting to overstep
+	  their process limit.  If the sysctl option is enabled, a sysctl option
+	  with name "forkfail_logging" is created.
+
+config GRKERNSEC_TIME
+	bool "Time change logging"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, any changes of the system clock will be logged.
+	  If the sysctl option is enabled, a sysctl option with name
+	  "timechange_logging" is created.
+
+config GRKERNSEC_PROC_IPADDR
+	bool "/proc/<pid>/ipaddr support"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, a new entry will be added to each /proc/<pid>
+	  directory that contains the IP address of the person using the task.
+	  The IP is carried across local TCP and AF_UNIX stream sockets.
+	  This information can be useful for IDS/IPSes to perform remote response
+	  to a local attack.  The entry is readable by only the owner of the
+	  process (and root if he has CAP_DAC_OVERRIDE, which can be removed via
+	  the RBAC system), and thus does not create privacy concerns.
+
+config GRKERNSEC_RWXMAP_LOG
+	bool 'Denied RWX mmap/mprotect logging'
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on PAX_MPROTECT && !PAX_EMUPLT && !PAX_EMUSIGRT
+	help
+	  If you say Y here, calls to mmap() and mprotect() with explicit
+	  usage of PROT_WRITE and PROT_EXEC together will be logged when
+	  denied by the PAX_MPROTECT feature.  This feature will also
+	  log other problematic scenarios that can occur when PAX_MPROTECT
+	  is enabled on a binary, like textrels and PT_GNU_STACK.  If the 
+          sysctl option is enabled, a sysctl option with name "rwxmap_logging"
+	  is created.
+
+endmenu
+
+menu "Executable Protections"
+depends on GRKERNSEC
+
+config GRKERNSEC_DMESG
+	bool "Dmesg(8) restriction"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, non-root users will not be able to use dmesg(8)
+	  to view the contents of the kernel's circular log buffer.
+	  The kernel's log buffer often contains kernel addresses and other
+	  identifying information useful to an attacker in fingerprinting a
+	  system for a targeted exploit.
+	  If the sysctl option is enabled, a sysctl option with name "dmesg" is
+	  created.
+
+config GRKERNSEC_HARDEN_PTRACE
+	bool "Deter ptrace-based process snooping"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, TTY sniffers and other malicious monitoring
+	  programs implemented through ptrace will be defeated.  If you
+	  have been using the RBAC system, this option has already been
+	  enabled for several years for all users, with the ability to make
+	  fine-grained exceptions.
+
+	  This option only affects the ability of non-root users to ptrace
+	  processes that are not a descendent of the ptracing process.
+	  This means that strace ./binary and gdb ./binary will still work,
+	  but attaching to arbitrary processes will not.  If the sysctl
+	  option is enabled, a sysctl option with name "harden_ptrace" is
+	  created.
+
+config GRKERNSEC_PTRACE_READEXEC
+	bool "Require read access to ptrace sensitive binaries"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, unprivileged users will not be able to ptrace unreadable
+	  binaries.  This option is useful in environments that
+	  remove the read bits (e.g. file mode 4711) from suid binaries to
+	  prevent infoleaking of their contents.  This option adds
+	  consistency to the use of that file mode, as the binary could normally
+	  be read out when run without privileges while ptracing.
+
+	  If the sysctl option is enabled, a sysctl option with name "ptrace_readexec"
+	  is created.
+
+config GRKERNSEC_SETXID
+	bool "Enforce consistent multithreaded privileges"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on (X86 || SPARC64 || PPC || ARM || MIPS)
+	help
+	  If you say Y here, a change from a root uid to a non-root uid
+	  in a multithreaded application will cause the resulting uids,
+	  gids, supplementary groups, and capabilities in that thread
+	  to be propagated to the other threads of the process.  In most
+	  cases this is unnecessary, as glibc will emulate this behavior
+	  on behalf of the application.  Other libcs do not act in the
+	  same way, allowing the other threads of the process to continue
+	  running with root privileges.  If the sysctl option is enabled,
+	  a sysctl option with name "consistent_setxid" is created.
+
+config GRKERNSEC_HARDEN_IPC
+	bool "Disallow access to overly-permissive IPC objects"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on SYSVIPC
+	help
+	  If you say Y here, access to overly-permissive IPC objects (shared
+	  memory, message queues, and semaphores) will be denied for processes
+	  given the following criteria beyond normal permission checks:
+	  1) If the IPC object is world-accessible and the euid doesn't match
+	     that of the creator or current uid for the IPC object
+	  2) If the IPC object is group-accessible and the egid doesn't
+	     match that of the creator or current gid for the IPC object
+	  It's a common error to grant too much permission to these objects,
+	  with impact ranging from denial of service and information leaking to
+	  privilege escalation.  This feature was developed in response to
+	  research by Tim Brown:
+	  http://labs.portcullis.co.uk/whitepapers/memory-squatting-attacks-on-system-v-shared-memory/
+	  who found hundreds of such insecure usages.  Processes with
+	  CAP_IPC_OWNER are still permitted to access these IPC objects.
+	  If the sysctl option is enabled, a sysctl option with name
+	  "harden_ipc" is created.
+
+config GRKERNSEC_TPE
+	bool "Trusted Path Execution (TPE)"
+	default y if GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER
+	help
+	  If you say Y here, you will be able to choose a gid to add to the
+	  supplementary groups of users you want to mark as "untrusted."
+	  These users will not be able to execute any files that are not in
+	  root-owned directories writable only by root.  If the sysctl option
+	  is enabled, a sysctl option with name "tpe" is created.
+
+config GRKERNSEC_TPE_ALL
+	bool "Partially restrict all non-root users"
+	depends on GRKERNSEC_TPE
+	help
+	  If you say Y here, all non-root users will be covered under
+	  a weaker TPE restriction.  This is separate from, and in addition to,
+	  the main TPE options that you have selected elsewhere.  Thus, if a
+	  "trusted" GID is chosen, this restriction applies to even that GID.
+	  Under this restriction, all non-root users will only be allowed to
+	  execute files in directories they own that are not group or
+	  world-writable, or in directories owned by root and writable only by
+	  root.  If the sysctl option is enabled, a sysctl option with name
+	  "tpe_restrict_all" is created.
+
+config GRKERNSEC_TPE_INVERT
+	bool "Invert GID option"
+	depends on GRKERNSEC_TPE
+	help
+	  If you say Y here, the group you specify in the TPE configuration will
+	  decide what group TPE restrictions will be *disabled* for.  This
+	  option is useful if you want TPE restrictions to be applied to most
+	  users on the system.  If the sysctl option is enabled, a sysctl option
+	  with name "tpe_invert" is created.  Unlike other sysctl options, this
+	  entry will default to on for backward-compatibility.
+
+config GRKERNSEC_TPE_GID
+	int
+	default GRKERNSEC_TPE_UNTRUSTED_GID if (GRKERNSEC_TPE && !GRKERNSEC_TPE_INVERT)
+	default GRKERNSEC_TPE_TRUSTED_GID if (GRKERNSEC_TPE && GRKERNSEC_TPE_INVERT)
+	
+config GRKERNSEC_TPE_UNTRUSTED_GID
+	int "GID for TPE-untrusted users"
+	depends on GRKERNSEC_TPE && !GRKERNSEC_TPE_INVERT
+	default 1005
+	help
+	  Setting this GID determines what group TPE restrictions will be
+	  *enabled* for.  If the sysctl option is enabled, a sysctl option
+	  with name "tpe_gid" is created.
+
+config GRKERNSEC_TPE_TRUSTED_GID
+	int "GID for TPE-trusted users"
+	depends on GRKERNSEC_TPE && GRKERNSEC_TPE_INVERT
+	default 1005
+	help
+	  Setting this GID determines what group TPE restrictions will be
+	  *disabled* for.  If the sysctl option is enabled, a sysctl option
+	  with name "tpe_gid" is created.
+
+endmenu
+menu "Network Protections"
+depends on GRKERNSEC
+
+config GRKERNSEC_BLACKHOLE
+	bool "TCP/UDP blackhole and LAST_ACK DoS prevention"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on NET
+	help
+	  If you say Y here, neither TCP resets nor ICMP
+	  destination-unreachable packets will be sent in response to packets
+	  sent to ports for which no associated listening process exists.
+	  This feature supports both IPV4 and IPV6 and exempts the 
+	  loopback interface from blackholing.  Enabling this feature 
+	  makes a host more resilient to DoS attacks and reduces network
+	  visibility against scanners.
+
+	  The blackhole feature as-implemented is equivalent to the FreeBSD
+	  blackhole feature, as it prevents RST responses to all packets, not
+	  just SYNs.  Under most application behavior this causes no
+	  problems, but applications (like haproxy) may not close certain
+	  connections in a way that cleanly terminates them on the remote
+	  end, leaving the remote host in LAST_ACK state.  Because of this
+	  side-effect and to prevent intentional LAST_ACK DoSes, this
+	  feature also adds automatic mitigation against such attacks.
+	  The mitigation drastically reduces the amount of time a socket
+	  can spend in LAST_ACK state.  If you're using haproxy and not
+	  all servers it connects to have this option enabled, consider
+	  disabling this feature on the haproxy host.
+
+	  If the sysctl option is enabled, two sysctl options with names
+	  "ip_blackhole" and "lastack_retries" will be created.
+	  While "ip_blackhole" takes the standard zero/non-zero on/off
+	  toggle, "lastack_retries" uses the same kinds of values as
+	  "tcp_retries1" and "tcp_retries2".  The default value of 4
+	  prevents a socket from lasting more than 45 seconds in LAST_ACK
+	  state.
+
+config GRKERNSEC_NO_SIMULT_CONNECT
+	bool "Disable TCP Simultaneous Connect"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on NET
+	help
+	  If you say Y here, a feature by Willy Tarreau will be enabled that
+	  removes a weakness in Linux's strict implementation of TCP that
+	  allows two clients to connect to each other without either entering
+	  a listening state.  The weakness allows an attacker to easily prevent
+	  a client from connecting to a known server provided the source port
+	  for the connection is guessed correctly.
+
+	  As the weakness could be used to prevent an antivirus or IPS from
+	  fetching updates, or prevent an SSL gateway from fetching a CRL,
+	  it should be eliminated by enabling this option.  Though Linux is
+	  one of few operating systems supporting simultaneous connect, it
+	  has no legitimate use in practice and is rarely supported by firewalls.
+	
+config GRKERNSEC_SOCKET
+	bool "Socket restrictions"
+	depends on NET
+	help
+	  If you say Y here, you will be able to choose from several options.
+	  If you assign a GID on your system and add it to the supplementary
+	  groups of users you want to restrict socket access to, this patch
+	  will perform up to three things, based on the option(s) you choose.
+
+config GRKERNSEC_SOCKET_ALL
+	bool "Deny any sockets to group"
+	depends on GRKERNSEC_SOCKET
+	help
+	  If you say Y here, you will be able to choose a GID of whose users will
+	  be unable to connect to other hosts from your machine or run server
+	  applications from your machine.  If the sysctl option is enabled, a
+	  sysctl option with name "socket_all" is created.
+
+config GRKERNSEC_SOCKET_ALL_GID
+	int "GID to deny all sockets for"
+	depends on GRKERNSEC_SOCKET_ALL
+	default 1004
+	help
+	  Here you can choose the GID to disable socket access for. Remember to
+	  add the users you want socket access disabled for to the GID
+	  specified here.  If the sysctl option is enabled, a sysctl option
+	  with name "socket_all_gid" is created.
+
+config GRKERNSEC_SOCKET_CLIENT
+	bool "Deny client sockets to group"
+	depends on GRKERNSEC_SOCKET
+	help
+	  If you say Y here, you will be able to choose a GID of whose users will
+	  be unable to connect to other hosts from your machine, but will be
+	  able to run servers.  If this option is enabled, all users in the group
+	  you specify will have to use passive mode when initiating ftp transfers
+	  from the shell on your machine.  If the sysctl option is enabled, a
+	  sysctl option with name "socket_client" is created.
+
+config GRKERNSEC_SOCKET_CLIENT_GID
+	int "GID to deny client sockets for"
+	depends on GRKERNSEC_SOCKET_CLIENT
+	default 1003
+	help
+	  Here you can choose the GID to disable client socket access for.
+	  Remember to add the users you want client socket access disabled for to
+	  the GID specified here.  If the sysctl option is enabled, a sysctl
+	  option with name "socket_client_gid" is created.
+
+config GRKERNSEC_SOCKET_SERVER
+	bool "Deny server sockets to group"
+	depends on GRKERNSEC_SOCKET
+	help
+	  If you say Y here, you will be able to choose a GID of whose users will
+	  be unable to run server applications from your machine.  If the sysctl
+	  option is enabled, a sysctl option with name "socket_server" is created.
+
+config GRKERNSEC_SOCKET_SERVER_GID
+	int "GID to deny server sockets for"
+	depends on GRKERNSEC_SOCKET_SERVER
+	default 1002
+	help
+	  Here you can choose the GID to disable server socket access for.
+	  Remember to add the users you want server socket access disabled for to
+	  the GID specified here.  If the sysctl option is enabled, a sysctl
+	  option with name "socket_server_gid" is created.
+
+endmenu
+
+menu "Physical Protections"
+depends on GRKERNSEC
+
+config GRKERNSEC_DENYUSB
+	bool "Deny new USB connections after toggle"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on SYSCTL && USB_SUPPORT
+	help
+	  If you say Y here, a new sysctl option with name "deny_new_usb"
+	  will be created.  Setting its value to 1 will prevent any new
+	  USB devices from being recognized by the OS.  Any attempted USB
+	  device insertion will be logged.  This option is intended to be
+	  used against custom USB devices designed to exploit vulnerabilities
+	  in various USB device drivers.
+
+	  For greatest effectiveness, this sysctl should be set after any
+	  relevant init scripts.  This option is safe to enable in distros
+	  as each user can choose whether or not to toggle the sysctl.
+
+config GRKERNSEC_DENYUSB_FORCE
+	bool "Reject all USB devices not connected at boot"
+	select USB
+	depends on GRKERNSEC_DENYUSB
+	help
+	  If you say Y here, a variant of GRKERNSEC_DENYUSB will be enabled
+	  that doesn't involve a sysctl entry.  This option should only be
+	  enabled if you're sure you want to deny all new USB connections
+	  at runtime and don't want to modify init scripts.  This should not
+	  be enabled by distros.  It forces the core USB code to be built
+	  into the kernel image so that all devices connected at boot time
+	  can be recognized and new USB device connections can be prevented
+	  prior to init running.
+
+endmenu
+
+menu "Sysctl Support"
+depends on GRKERNSEC && SYSCTL
+
+config GRKERNSEC_SYSCTL
+	bool "Sysctl support"
+	default y if GRKERNSEC_CONFIG_AUTO
+	help
+	  If you say Y here, you will be able to change the options that
+	  grsecurity runs with at bootup, without having to recompile your
+	  kernel.  You can echo values to files in /proc/sys/kernel/grsecurity
+	  to enable (1) or disable (0) various features.  All the sysctl entries
+	  are mutable until the "grsec_lock" entry is set to a non-zero value.
+	  All features enabled in the kernel configuration are disabled at boot
+	  if you do not say Y to the "Turn on features by default" option.
+	  All options should be set at startup, and the grsec_lock entry should
+	  be set to a non-zero value after all the options are set.
+	  *THIS IS EXTREMELY IMPORTANT*
+
+config GRKERNSEC_SYSCTL_DISTRO
+	bool "Extra sysctl support for distro makers (READ HELP)"
+	depends on GRKERNSEC_SYSCTL && GRKERNSEC_IO
+	help
+	  If you say Y here, additional sysctl options will be created
+	  for features that affect processes running as root.  Therefore,
+	  it is critical when using this option that the grsec_lock entry be
+	  enabled after boot.  Only distros with prebuilt kernel packages
+	  with this option enabled that can ensure grsec_lock is enabled
+	  after boot should use this option.
+	  *Failure to set grsec_lock after boot makes all grsec features
+	  this option covers useless*
+
+	  Currently this option creates the following sysctl entries:
+	  "Disable Privileged I/O": "disable_priv_io"	
+
+config GRKERNSEC_SYSCTL_ON
+	bool "Turn on features by default"
+	default y if GRKERNSEC_CONFIG_AUTO
+	depends on GRKERNSEC_SYSCTL
+	help
+	  If you say Y here, instead of having all features enabled in the
+	  kernel configuration disabled at boot time, the features will be
+	  enabled at boot time.  It is recommended you say Y here unless
+	  there is some reason you would want all sysctl-tunable features to
+	  be disabled by default.  As mentioned elsewhere, it is important
+	  to enable the grsec_lock entry once you have finished modifying
+	  the sysctl entries.
+
+endmenu
+menu "Logging Options"
+depends on GRKERNSEC
+
+config GRKERNSEC_FLOODTIME
+	int "Seconds in between log messages (minimum)"
+	default 10
+	help
+	  This option allows you to enforce the number of seconds between
+	  grsecurity log messages.  The default should be suitable for most
+	  people, however, if you choose to change it, choose a value small enough
+	  to allow informative logs to be produced, but large enough to
+	  prevent flooding.
+
+	  Setting both this value and GRKERNSEC_FLOODBURST to 0 will disable
+	  any rate limiting on grsecurity log messages.
+
+config GRKERNSEC_FLOODBURST
+	int "Number of messages in a burst (maximum)"
+	default 6
+	help
+	  This option allows you to choose the maximum number of messages allowed
+	  within the flood time interval you chose in a separate option.  The
+	  default should be suitable for most people, however if you find that
+	  many of your logs are being interpreted as flooding, you may want to
+	  raise this value.
+
+	  Setting both this value and GRKERNSEC_FLOODTIME to 0 will disable
+	  any rate limiting on grsecurity log messages.
+
+endmenu
diff --git a/grsecurity/Makefile b/grsecurity/Makefile
new file mode 100644
index 0000000..30ababb
--- /dev/null
+++ b/grsecurity/Makefile
@@ -0,0 +1,54 @@
+# grsecurity – access control and security hardening for Linux
+# All code in this directory and various hooks located throughout the Linux kernel are
+# Copyright (C) 2001-2014 Bradley Spengler, Open Source Security, Inc.
+# http://www.grsecurity.net spender@grsecurity.net
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License version 2
+# as published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+KBUILD_CFLAGS += -Werror
+
+obj-y = grsec_chdir.o grsec_chroot.o grsec_exec.o grsec_fifo.o grsec_fork.o \
+	grsec_mount.o grsec_sig.o grsec_sysctl.o \
+	grsec_time.o grsec_tpe.o grsec_link.o grsec_pax.o grsec_ptrace.o \
+	grsec_usb.o grsec_ipc.o grsec_proc.o
+
+obj-$(CONFIG_GRKERNSEC) += grsec_init.o grsum.o gracl.o gracl_segv.o \
+	gracl_cap.o gracl_alloc.o gracl_shm.o grsec_mem.o gracl_fs.o \
+	gracl_learn.o grsec_log.o gracl_policy.o
+ifdef CONFIG_COMPAT
+obj-$(CONFIG_GRKERNSEC) += gracl_compat.o
+endif
+
+obj-$(CONFIG_GRKERNSEC_RESLOG) += gracl_res.o
+
+ifdef CONFIG_NET
+obj-y += grsec_sock.o
+obj-$(CONFIG_GRKERNSEC) += gracl_ip.o
+endif
+
+ifndef CONFIG_GRKERNSEC
+obj-y += grsec_disabled.o
+endif
+
+ifdef CONFIG_GRKERNSEC_HIDESYM
+extra-y := grsec_hidesym.o
+$(obj)/grsec_hidesym.o:
+	@-chmod -f 500 /boot
+	@-chmod -f 500 /lib/modules
+	@-chmod -f 500 /lib64/modules
+	@-chmod -f 500 /lib32/modules
+	@-chmod -f 700 .
+	@-chmod -f 700 $(objtree)
+	@echo '  grsec: protected kernel image paths'
+endif
diff --git a/grsecurity/gracl.c b/grsecurity/gracl.c
new file mode 100644
index 0000000..58223f6
--- /dev/null
+++ b/grsecurity/gracl.c
@@ -0,0 +1,2702 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/namei.h>
+#include <linux/mount.h>
+#include <linux/tty.h>
+#include <linux/proc_fs.h>
+#include <linux/lglock.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/types.h>
+#include <linux/sysctl.h>
+#include <linux/netdevice.h>
+#include <linux/ptrace.h>
+#include <linux/gracl.h>
+#include <linux/gralloc.h>
+#include <linux/security.h>
+#include <linux/grinternal.h>
+#include <linux/pid_namespace.h>
+#include <linux/stop_machine.h>
+#include <linux/fdtable.h>
+#include <linux/percpu.h>
+#include <linux/lglock.h>
+#include <linux/hugetlb.h>
+#include <linux/posix-timers.h>
+#include <linux/prefetch.h>
+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
+#include <linux/magic.h>
+#include <linux/pagemap.h>
+#include "../fs/btrfs/async-thread.h"
+#include "../fs/btrfs/ctree.h"
+#include "../fs/btrfs/btrfs_inode.h"
+#endif
+#include "../fs/mount.h"
+
+#include <asm/uaccess.h>
+#include <asm/errno.h>
+#include <asm/mman.h>
+
+#define FOR_EACH_ROLE_START(role) \
+	role = running_polstate.role_list; \
+	while (role) {
+
+#define FOR_EACH_ROLE_END(role) \
+		role = role->prev; \
+	}
+
+extern struct path gr_real_root;
+
+static struct gr_policy_state running_polstate;
+struct gr_policy_state *polstate = &running_polstate;
+extern struct gr_alloc_state *current_alloc_state;
+
+extern char *gr_shared_page[4];
+DEFINE_RWLOCK(gr_inode_lock);
+
+static unsigned int gr_status __read_only = GR_STATUS_INIT;
+
+#ifdef CONFIG_NET
+extern struct vfsmount *sock_mnt;
+#endif
+
+extern struct vfsmount *pipe_mnt;
+extern struct vfsmount *shm_mnt;
+
+#ifdef CONFIG_HUGETLBFS
+extern struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
+#endif
+
+extern u16 acl_sp_role_value;
+extern struct acl_object_label *fakefs_obj_rw;
+extern struct acl_object_label *fakefs_obj_rwx;
+
+int gr_acl_is_enabled(void)
+{
+	return (gr_status & GR_READY);
+}
+
+void gr_enable_rbac_system(void)
+{
+	pax_open_kernel();
+	gr_status |= GR_READY;
+	pax_close_kernel();
+}
+
+int gr_rbac_disable(void *unused)
+{
+        pax_open_kernel();
+        gr_status &= ~GR_READY;
+        pax_close_kernel();
+
+        return 0;
+}
+
+static inline dev_t __get_dev(const struct dentry *dentry)
+{
+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
+	if (dentry->d_sb->s_magic == BTRFS_SUPER_MAGIC)
+		return BTRFS_I(dentry->d_inode)->root->anon_dev;
+	else
+#endif
+		return dentry->d_sb->s_dev;
+}
+
+dev_t gr_get_dev_from_dentry(struct dentry *dentry)
+{
+	return __get_dev(dentry);
+}
+
+static char gr_task_roletype_to_char(struct task_struct *task)
+{
+	switch (task->role->roletype &
+		(GR_ROLE_DEFAULT | GR_ROLE_USER | GR_ROLE_GROUP |
+		 GR_ROLE_SPECIAL)) {
+	case GR_ROLE_DEFAULT:
+		return 'D';
+	case GR_ROLE_USER:
+		return 'U';
+	case GR_ROLE_GROUP:
+		return 'G';
+	case GR_ROLE_SPECIAL:
+		return 'S';
+	}
+
+	return 'X';
+}
+
+char gr_roletype_to_char(void)
+{
+	return gr_task_roletype_to_char(current);
+}
+
+__inline__ int
+gr_acl_tpe_check(void)
+{
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+	if (current->role->roletype & GR_ROLE_TPE)
+		return 1;
+	else
+		return 0;
+}
+
+int
+gr_handle_rawio(const struct inode *inode)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	if (inode && (S_ISBLK(inode->i_mode) || (S_ISCHR(inode->i_mode) && imajor(inode) == RAW_MAJOR)) &&
+	    grsec_enable_chroot_caps && proc_is_chrooted(current) &&
+	    !capable(CAP_SYS_RAWIO))
+		return 1;
+#endif
+	return 0;
+}
+
+int
+gr_streq(const char *a, const char *b, const unsigned int lena, const unsigned int lenb)
+{
+	if (likely(lena != lenb))
+		return 0;
+
+	return !memcmp(a, b, lena);
+}
+
+static int prepend(char **buffer, int *buflen, const char *str, int namelen)
+{
+	*buflen -= namelen;
+	if (*buflen < 0)
+		return -ENAMETOOLONG;
+	*buffer -= namelen;
+	memcpy(*buffer, str, namelen);
+	return 0;
+}
+
+static int prepend_name(char **buffer, int *buflen, struct qstr *name)
+{
+	return prepend(buffer, buflen, name->name, name->len);
+}
+
+static int prepend_path(const struct path *path, struct path *root,
+			char **buffer, int *buflen)
+{
+	struct dentry *dentry = path->dentry;
+	struct vfsmount *vfsmnt = path->mnt;
+	struct mount *mnt = real_mount(vfsmnt);
+	bool slash = false;
+	int error = 0;
+
+	while (dentry != root->dentry || vfsmnt != root->mnt) {
+		struct dentry * parent;
+
+		if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
+			/* Global root? */
+			if (!mnt_has_parent(mnt)) {
+				goto out;
+			}
+			dentry = mnt->mnt_mountpoint;
+			mnt = mnt->mnt_parent;
+			vfsmnt = &mnt->mnt;
+			continue;
+		}
+		parent = dentry->d_parent;
+		prefetch(parent);
+		spin_lock(&dentry->d_lock);
+		error = prepend_name(buffer, buflen, &dentry->d_name);
+		spin_unlock(&dentry->d_lock);
+		if (!error)
+			error = prepend(buffer, buflen, "/", 1);
+		if (error)
+			break;
+
+		slash = true;
+		dentry = parent;
+	}
+
+out:
+	if (!error && !slash)
+		error = prepend(buffer, buflen, "/", 1);
+
+	return error;
+}
+
+/* this must be called with mount_lock and rename_lock held */
+
+static char *__our_d_path(const struct path *path, struct path *root,
+			char *buf, int buflen)
+{
+	char *res = buf + buflen;
+	int error;
+
+	prepend(&res, &buflen, "\0", 1);
+	error = prepend_path(path, root, &res, &buflen);
+	if (error)
+		return ERR_PTR(error);
+
+	return res;
+}
+
+static char *
+gen_full_path(struct path *path, struct path *root, char *buf, int buflen)
+{
+	char *retval;
+
+	retval = __our_d_path(path, root, buf, buflen);
+	if (unlikely(IS_ERR(retval)))
+		retval = strcpy(buf, "<path too long>");
+	else if (unlikely(retval[1] == '/' && retval[2] == '\0'))
+		retval[1] = '\0';
+
+	return retval;
+}
+
+static char *
+__d_real_path(const struct dentry *dentry, const struct vfsmount *vfsmnt,
+		char *buf, int buflen)
+{
+	struct path path;
+	char *res;
+
+	path.dentry = (struct dentry *)dentry;
+	path.mnt = (struct vfsmount *)vfsmnt;
+
+	/* we can use gr_real_root.dentry, gr_real_root.mnt, because this is only called
+	   by the RBAC system */
+	res = gen_full_path(&path, &gr_real_root, buf, buflen);
+
+	return res;
+}
+
+static char *
+d_real_path(const struct dentry *dentry, const struct vfsmount *vfsmnt,
+	    char *buf, int buflen)
+{
+	char *res;
+	struct path path;
+	struct path root;
+	struct task_struct *reaper = init_pid_ns.child_reaper;
+
+	path.dentry = (struct dentry *)dentry;
+	path.mnt = (struct vfsmount *)vfsmnt;
+
+	/* we can't use gr_real_root.dentry, gr_real_root.mnt, because they belong only to the RBAC system */
+	get_fs_root(reaper->fs, &root);
+
+	read_seqlock_excl(&mount_lock);
+	write_seqlock(&rename_lock);
+	res = gen_full_path(&path, &root, buf, buflen);
+	write_sequnlock(&rename_lock);
+	read_sequnlock_excl(&mount_lock);
+
+	path_put(&root);
+	return res;
+}
+
+char *
+gr_to_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	char *ret;
+	read_seqlock_excl(&mount_lock);
+	write_seqlock(&rename_lock);
+	ret = __d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0],smp_processor_id()),
+			     PAGE_SIZE);
+	write_sequnlock(&rename_lock);
+	read_sequnlock_excl(&mount_lock);
+	return ret;
+}
+
+static char *
+gr_to_proc_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	char *ret;
+	char *buf;
+	int buflen;
+
+	read_seqlock_excl(&mount_lock);
+	write_seqlock(&rename_lock);
+	buf = per_cpu_ptr(gr_shared_page[0], smp_processor_id());
+	ret = __d_real_path(dentry, mnt, buf, PAGE_SIZE - 6);
+	buflen = (int)(ret - buf);
+	if (buflen >= 5)
+		prepend(&ret, &buflen, "/proc", 5);
+	else
+		ret = strcpy(buf, "<path too long>");
+	write_sequnlock(&rename_lock);
+	read_sequnlock_excl(&mount_lock);
+	return ret;
+}
+
+char *
+gr_to_filename_nolock(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return __d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0],smp_processor_id()),
+			     PAGE_SIZE);
+}
+
+char *
+gr_to_filename(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0], smp_processor_id()),
+			   PAGE_SIZE);
+}
+
+char *
+gr_to_filename1(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[1], smp_processor_id()),
+			   PAGE_SIZE);
+}
+
+char *
+gr_to_filename2(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[2], smp_processor_id()),
+			   PAGE_SIZE);
+}
+
+char *
+gr_to_filename3(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[3], smp_processor_id()),
+			   PAGE_SIZE);
+}
+
+__inline__ __u32
+to_gr_audit(const __u32 reqmode)
+{
+	/* masks off auditable permission flags, then shifts them to create
+	   auditing flags, and adds the special case of append auditing if
+	   we're requesting write */
+	return (((reqmode & ~GR_AUDITS) << 10) | ((reqmode & GR_WRITE) ? GR_AUDIT_APPEND : 0));
+}
+
+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)
+{
+	unsigned int index = gr_rhash(uid, GR_ROLE_USER, state->acl_role_set.r_size);
+	struct acl_role_label *match;
+	struct role_allowed_ip *ipp;
+	unsigned int x;
+	u32 curr_ip = task->signal->saved_ip;
+
+	match = state->acl_role_set.r_hash[index];
+
+	while (match) {
+		if ((match->roletype & (GR_ROLE_DOMAIN | GR_ROLE_USER)) == (GR_ROLE_DOMAIN | GR_ROLE_USER)) {
+			for (x = 0; x < match->domain_child_num; x++) {
+				if (match->domain_children[x] == uid)
+					goto found;
+			}
+		} else if (match->uidgid == uid && match->roletype & GR_ROLE_USER)
+			break;
+		match = match->next;
+	}
+found:
+	if (match == NULL) {
+	      try_group:
+		index = gr_rhash(gid, GR_ROLE_GROUP, state->acl_role_set.r_size);
+		match = state->acl_role_set.r_hash[index];
+
+		while (match) {
+			if ((match->roletype & (GR_ROLE_DOMAIN | GR_ROLE_GROUP)) == (GR_ROLE_DOMAIN | GR_ROLE_GROUP)) {
+				for (x = 0; x < match->domain_child_num; x++) {
+					if (match->domain_children[x] == gid)
+						goto found2;
+				}
+			} else if (match->uidgid == gid && match->roletype & GR_ROLE_GROUP)
+				break;
+			match = match->next;
+		}
+found2:
+		if (match == NULL)
+			match = state->default_role;
+		if (match->allowed_ips == NULL)
+			return match;
+		else {
+			for (ipp = match->allowed_ips; ipp; ipp = ipp->next) {
+				if (likely
+				    ((ntohl(curr_ip) & ipp->netmask) ==
+				     (ntohl(ipp->addr) & ipp->netmask)))
+					return match;
+			}
+			match = state->default_role;
+		}
+	} else if (match->allowed_ips == NULL) {
+		return match;
+	} else {
+		for (ipp = match->allowed_ips; ipp; ipp = ipp->next) {
+			if (likely
+			    ((ntohl(curr_ip) & ipp->netmask) ==
+			     (ntohl(ipp->addr) & ipp->netmask)))
+				return match;
+		}
+		goto try_group;
+	}
+
+	return match;
+}
+
+static struct acl_role_label *
+lookup_acl_role_label(const struct task_struct *task, const uid_t uid,
+		      const gid_t gid)
+{
+	return __lookup_acl_role_label(&running_polstate, task, uid, gid);
+}
+
+struct acl_subject_label *
+lookup_acl_subj_label(const ino_t ino, const dev_t dev,
+		      const struct acl_role_label *role)
+{
+	unsigned int index = gr_fhash(ino, dev, role->subj_hash_size);
+	struct acl_subject_label *match;
+
+	match = role->subj_hash[index];
+
+	while (match && (match->inode != ino || match->device != dev ||
+	       (match->mode & GR_DELETED))) {
+		match = match->next;
+	}
+
+	if (match && !(match->mode & GR_DELETED))
+		return match;
+	else
+		return NULL;
+}
+
+struct acl_subject_label *
+lookup_acl_subj_label_deleted(const ino_t ino, const dev_t dev,
+			  const struct acl_role_label *role)
+{
+	unsigned int index = gr_fhash(ino, dev, role->subj_hash_size);
+	struct acl_subject_label *match;
+
+	match = role->subj_hash[index];
+
+	while (match && (match->inode != ino || match->device != dev ||
+	       !(match->mode & GR_DELETED))) {
+		match = match->next;
+	}
+
+	if (match && (match->mode & GR_DELETED))
+		return match;
+	else
+		return NULL;
+}
+
+static struct acl_object_label *
+lookup_acl_obj_label(const ino_t ino, const dev_t dev,
+		     const struct acl_subject_label *subj)
+{
+	unsigned int index = gr_fhash(ino, dev, subj->obj_hash_size);
+	struct acl_object_label *match;
+
+	match = subj->obj_hash[index];
+
+	while (match && (match->inode != ino || match->device != dev ||
+	       (match->mode & GR_DELETED))) {
+		match = match->next;
+	}
+
+	if (match && !(match->mode & GR_DELETED))
+		return match;
+	else
+		return NULL;
+}
+
+static struct acl_object_label *
+lookup_acl_obj_label_create(const ino_t ino, const dev_t dev,
+		     const struct acl_subject_label *subj)
+{
+	unsigned int index = gr_fhash(ino, dev, subj->obj_hash_size);
+	struct acl_object_label *match;
+
+	match = subj->obj_hash[index];
+
+	while (match && (match->inode != ino || match->device != dev ||
+	       !(match->mode & GR_DELETED))) {
+		match = match->next;
+	}
+
+	if (match && (match->mode & GR_DELETED))
+		return match;
+
+	match = subj->obj_hash[index];
+
+	while (match && (match->inode != ino || match->device != dev ||
+	       (match->mode & GR_DELETED))) {
+		match = match->next;
+	}
+
+	if (match && !(match->mode & GR_DELETED))
+		return match;
+	else
+		return NULL;
+}
+
+struct name_entry *
+__lookup_name_entry(const struct gr_policy_state *state, const char *name)
+{
+	unsigned int len = strlen(name);
+	unsigned int key = full_name_hash(name, len);
+	unsigned int index = key % state->name_set.n_size;
+	struct name_entry *match;
+
+	match = state->name_set.n_hash[index];
+
+	while (match && (match->key != key || !gr_streq(match->name, name, match->len, len)))
+		match = match->next;
+
+	return match;
+}
+
+static struct name_entry *
+lookup_name_entry(const char *name)
+{
+	return __lookup_name_entry(&running_polstate, name);
+}
+
+static struct name_entry *
+lookup_name_entry_create(const char *name)
+{
+	unsigned int len = strlen(name);
+	unsigned int key = full_name_hash(name, len);
+	unsigned int index = key % running_polstate.name_set.n_size;
+	struct name_entry *match;
+
+	match = running_polstate.name_set.n_hash[index];
+
+	while (match && (match->key != key || !gr_streq(match->name, name, match->len, len) ||
+			 !match->deleted))
+		match = match->next;
+
+	if (match && match->deleted)
+		return match;
+
+	match = running_polstate.name_set.n_hash[index];
+
+	while (match && (match->key != key || !gr_streq(match->name, name, match->len, len) ||
+			 match->deleted))
+		match = match->next;
+
+	if (match && !match->deleted)
+		return match;
+	else
+		return NULL;
+}
+
+static struct inodev_entry *
+lookup_inodev_entry(const ino_t ino, const dev_t dev)
+{
+	unsigned int index = gr_fhash(ino, dev, running_polstate.inodev_set.i_size);
+	struct inodev_entry *match;
+
+	match = running_polstate.inodev_set.i_hash[index];
+
+	while (match && (match->nentry->inode != ino || match->nentry->device != dev))
+		match = match->next;
+
+	return match;
+}
+
+void
+__insert_inodev_entry(const struct gr_policy_state *state, struct inodev_entry *entry)
+{
+	unsigned int index = gr_fhash(entry->nentry->inode, entry->nentry->device,
+				    state->inodev_set.i_size);
+	struct inodev_entry **curr;
+
+	entry->prev = NULL;
+
+	curr = &state->inodev_set.i_hash[index];
+	if (*curr != NULL)
+		(*curr)->prev = entry;
+	
+	entry->next = *curr;
+	*curr = entry;
+
+	return;
+}
+
+static void
+insert_inodev_entry(struct inodev_entry *entry)
+{
+	__insert_inodev_entry(&running_polstate, entry);
+}
+
+void
+insert_acl_obj_label(struct acl_object_label *obj,
+		     struct acl_subject_label *subj)
+{
+	unsigned int index =
+	    gr_fhash(obj->inode, obj->device, subj->obj_hash_size);
+	struct acl_object_label **curr;
+
+	obj->prev = NULL;
+
+	curr = &subj->obj_hash[index];
+	if (*curr != NULL)
+		(*curr)->prev = obj;
+
+	obj->next = *curr;
+	*curr = obj;
+
+	return;
+}
+
+void
+insert_acl_subj_label(struct acl_subject_label *obj,
+		      struct acl_role_label *role)
+{
+	unsigned int index = gr_fhash(obj->inode, obj->device, role->subj_hash_size);
+	struct acl_subject_label **curr;
+
+	obj->prev = NULL;
+
+	curr = &role->subj_hash[index];
+	if (*curr != NULL)
+		(*curr)->prev = obj;
+
+	obj->next = *curr;
+	*curr = obj;
+
+	return;
+}
+
+/* derived from glibc fnmatch() 0: match, 1: no match*/
+
+static int
+glob_match(const char *p, const char *n)
+{
+	char c;
+
+	while ((c = *p++) != '\0') {
+	switch (c) {
+		case '?':
+			if (*n == '\0')
+				return 1;
+			else if (*n == '/')
+				return 1;
+			break;
+		case '\\':
+			if (*n != c)
+				return 1;
+			break;
+		case '*':
+			for (c = *p++; c == '?' || c == '*'; c = *p++) {
+				if (*n == '/')
+					return 1;
+				else if (c == '?') {
+					if (*n == '\0')
+						return 1;
+					else
+						++n;
+				}
+			}
+			if (c == '\0') {
+				return 0;
+			} else {
+				const char *endp;
+
+				if ((endp = strchr(n, '/')) == NULL)
+					endp = n + strlen(n);
+
+				if (c == '[') {
+					for (--p; n < endp; ++n)
+						if (!glob_match(p, n))
+							return 0;
+				} else if (c == '/') {
+					while (*n != '\0' && *n != '/')
+						++n;
+					if (*n == '/' && !glob_match(p, n + 1))
+						return 0;
+				} else {
+					for (--p; n < endp; ++n)
+						if (*n == c && !glob_match(p, n))
+							return 0;
+				}
+
+				return 1;
+			}
+		case '[':
+			{
+			int not;
+			char cold;
+
+			if (*n == '\0' || *n == '/')
+				return 1;
+
+			not = (*p == '!' || *p == '^');
+			if (not)
+				++p;
+
+			c = *p++;
+			for (;;) {
+				unsigned char fn = (unsigned char)*n;
+
+				if (c == '\0')
+					return 1;
+				else {
+					if (c == fn)
+						goto matched;
+					cold = c;
+					c = *p++;
+
+					if (c == '-' && *p != ']') {
+						unsigned char cend = *p++;
+
+						if (cend == '\0')
+							return 1;
+
+						if (cold <= fn && fn <= cend)
+							goto matched;
+
+						c = *p++;
+					}
+				}
+
+				if (c == ']')
+					break;
+			}
+			if (!not)
+				return 1;
+			break;
+		matched:
+			while (c != ']') {
+				if (c == '\0')
+					return 1;
+
+				c = *p++;
+			}
+			if (not)
+				return 1;
+		}
+		break;
+	default:
+		if (c != *n)
+			return 1;
+	}
+
+	++n;
+	}
+
+	if (*n == '\0')
+		return 0;
+
+	if (*n == '/')
+		return 0;
+
+	return 1;
+}
+
+static struct acl_object_label *
+chk_glob_label(struct acl_object_label *globbed,
+	const struct dentry *dentry, const struct vfsmount *mnt, char **path)
+{
+	struct acl_object_label *tmp;
+
+	if (*path == NULL)
+		*path = gr_to_filename_nolock(dentry, mnt);
+
+	tmp = globbed;
+
+	while (tmp) {
+		if (!glob_match(tmp->filename, *path))
+			return tmp;
+		tmp = tmp->next;
+	}
+
+	return NULL;
+}
+
+static struct acl_object_label *
+__full_lookup(const struct dentry *orig_dentry, const struct vfsmount *orig_mnt,
+	    const ino_t curr_ino, const dev_t curr_dev,
+	    const struct acl_subject_label *subj, char **path, const int checkglob)
+{
+	struct acl_subject_label *tmpsubj;
+	struct acl_object_label *retval;
+	struct acl_object_label *retval2;
+
+	tmpsubj = (struct acl_subject_label *) subj;
+	read_lock(&gr_inode_lock);
+	do {
+		retval = lookup_acl_obj_label(curr_ino, curr_dev, tmpsubj);
+		if (retval) {
+			if (checkglob && retval->globbed) {
+				retval2 = chk_glob_label(retval->globbed, orig_dentry, orig_mnt, path);
+				if (retval2)
+					retval = retval2;
+			}
+			break;
+		}
+	} while ((tmpsubj = tmpsubj->parent_subject));
+	read_unlock(&gr_inode_lock);
+
+	return retval;
+}
+
+static __inline__ struct acl_object_label *
+full_lookup(const struct dentry *orig_dentry, const struct vfsmount *orig_mnt,
+	    struct dentry *curr_dentry,
+	    const struct acl_subject_label *subj, char **path, const int checkglob)
+{
+	int newglob = checkglob;
+	ino_t inode;
+	dev_t device;
+
+	/* if we aren't checking a subdirectory of the original path yet, don't do glob checking
+	   as we don't want a / * rule to match instead of the / object
+	   don't do this for create lookups that call this function though, since they're looking up
+	   on the parent and thus need globbing checks on all paths
+	*/
+	if (orig_dentry == curr_dentry && newglob != GR_CREATE_GLOB)
+		newglob = GR_NO_GLOB;
+
+	spin_lock(&curr_dentry->d_lock);
+	inode = curr_dentry->d_inode->i_ino;
+	device = __get_dev(curr_dentry);
+	spin_unlock(&curr_dentry->d_lock);
+
+	return __full_lookup(orig_dentry, orig_mnt, inode, device, subj, path, newglob);
+}
+
+#ifdef CONFIG_HUGETLBFS
+static inline bool
+is_hugetlbfs_mnt(const struct vfsmount *mnt)
+{
+	int i;
+	for (i = 0; i < HUGE_MAX_HSTATE; i++) {
+		if (unlikely(hugetlbfs_vfsmount[i] == mnt))
+			return true;
+	}
+
+	return false;
+}
+#endif
+
+static struct acl_object_label *
+__chk_obj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
+	      const struct acl_subject_label *subj, char *path, const int checkglob)
+{
+	struct dentry *dentry = (struct dentry *) l_dentry;
+	struct vfsmount *mnt = (struct vfsmount *) l_mnt;
+	struct mount *real_mnt = real_mount(mnt);
+	struct acl_object_label *retval;
+	struct dentry *parent;
+
+	read_seqlock_excl(&mount_lock);
+	write_seqlock(&rename_lock);
+
+	if (unlikely((mnt == shm_mnt && dentry->d_inode->i_nlink == 0) || mnt == pipe_mnt ||
+#ifdef CONFIG_NET
+	    mnt == sock_mnt ||
+#endif
+#ifdef CONFIG_HUGETLBFS
+	    (is_hugetlbfs_mnt(mnt) && dentry->d_inode->i_nlink == 0) ||
+#endif
+		/* ignore Eric Biederman */
+	    IS_PRIVATE(l_dentry->d_inode))) {
+		retval = (subj->mode & GR_SHMEXEC) ? fakefs_obj_rwx : fakefs_obj_rw;
+		goto out;
+	}
+
+	for (;;) {
+		if (dentry == gr_real_root.dentry && mnt == gr_real_root.mnt)
+			break;
+
+		if (dentry == mnt->mnt_root || IS_ROOT(dentry)) {
+			if (!mnt_has_parent(real_mnt))
+				break;
+
+			retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob);
+			if (retval != NULL)
+				goto out;
+
+			dentry = real_mnt->mnt_mountpoint;
+			real_mnt = real_mnt->mnt_parent;
+			mnt = &real_mnt->mnt;
+			continue;
+		}
+
+		parent = dentry->d_parent;
+		retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob);
+		if (retval != NULL)
+			goto out;
+
+		dentry = parent;
+	}
+
+	retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob);
+
+	/* gr_real_root is pinned so we don't have to hold a reference */
+	if (retval == NULL)
+		retval = full_lookup(l_dentry, l_mnt, gr_real_root.dentry, subj, &path, checkglob);
+out:
+	write_sequnlock(&rename_lock);
+	read_sequnlock_excl(&mount_lock);
+
+	BUG_ON(retval == NULL);
+
+	return retval;
+}
+
+static __inline__ struct acl_object_label *
+chk_obj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
+	      const struct acl_subject_label *subj)
+{
+	char *path = NULL;
+	return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_REG_GLOB);
+}
+
+static __inline__ struct acl_object_label *
+chk_obj_label_noglob(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
+	      const struct acl_subject_label *subj)
+{
+	char *path = NULL;
+	return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_NO_GLOB);
+}
+
+static __inline__ struct acl_object_label *
+chk_obj_create_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
+		     const struct acl_subject_label *subj, char *path)
+{
+	return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_CREATE_GLOB);
+}
+
+struct acl_subject_label *
+chk_subj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
+	       const struct acl_role_label *role)
+{
+	struct dentry *dentry = (struct dentry *) l_dentry;
+	struct vfsmount *mnt = (struct vfsmount *) l_mnt;
+	struct mount *real_mnt = real_mount(mnt);
+	struct acl_subject_label *retval;
+	struct dentry *parent;
+
+	read_seqlock_excl(&mount_lock);
+	write_seqlock(&rename_lock);
+
+	for (;;) {
+		if (dentry == gr_real_root.dentry && mnt == gr_real_root.mnt)
+			break;
+		if (dentry == mnt->mnt_root || IS_ROOT(dentry)) {
+			if (!mnt_has_parent(real_mnt))
+				break;
+
+			spin_lock(&dentry->d_lock);
+			read_lock(&gr_inode_lock);
+			retval =
+				lookup_acl_subj_label(dentry->d_inode->i_ino,
+						__get_dev(dentry), role);
+			read_unlock(&gr_inode_lock);
+			spin_unlock(&dentry->d_lock);
+			if (retval != NULL)
+				goto out;
+
+			dentry = real_mnt->mnt_mountpoint;
+			real_mnt = real_mnt->mnt_parent;
+			mnt = &real_mnt->mnt;
+			continue;
+		}
+
+		spin_lock(&dentry->d_lock);
+		read_lock(&gr_inode_lock);
+		retval = lookup_acl_subj_label(dentry->d_inode->i_ino,
+					  __get_dev(dentry), role);
+		read_unlock(&gr_inode_lock);
+		parent = dentry->d_parent;
+		spin_unlock(&dentry->d_lock);
+
+		if (retval != NULL)
+			goto out;
+
+		dentry = parent;
+	}
+
+	spin_lock(&dentry->d_lock);
+	read_lock(&gr_inode_lock);
+	retval = lookup_acl_subj_label(dentry->d_inode->i_ino,
+				  __get_dev(dentry), role);
+	read_unlock(&gr_inode_lock);
+	spin_unlock(&dentry->d_lock);
+
+	if (unlikely(retval == NULL)) {
+		/* gr_real_root is pinned, we don't need to hold a reference */
+		read_lock(&gr_inode_lock);
+		retval = lookup_acl_subj_label(gr_real_root.dentry->d_inode->i_ino,
+					  __get_dev(gr_real_root.dentry), role);
+		read_unlock(&gr_inode_lock);
+	}
+out:
+	write_sequnlock(&rename_lock);
+	read_sequnlock_excl(&mount_lock);
+
+	BUG_ON(retval == NULL);
+
+	return retval;
+}
+
+void
+assign_special_role(const char *rolename)
+{
+	struct acl_object_label *obj;
+	struct acl_role_label *r;
+	struct acl_role_label *assigned = NULL;
+	struct task_struct *tsk;
+	struct file *filp;
+
+	FOR_EACH_ROLE_START(r)
+		if (!strcmp(rolename, r->rolename) &&
+		    (r->roletype & GR_ROLE_SPECIAL)) {
+			assigned = r;
+			break;
+		}
+	FOR_EACH_ROLE_END(r)
+
+	if (!assigned)
+		return;
+
+	read_lock(&tasklist_lock);
+	read_lock(&grsec_exec_file_lock);
+
+	tsk = current->real_parent;
+	if (tsk == NULL)
+		goto out_unlock;
+
+	filp = tsk->exec_file;
+	if (filp == NULL)
+		goto out_unlock;
+
+	tsk->is_writable = 0;
+	tsk->inherited = 0;
+
+	tsk->acl_sp_role = 1;
+	tsk->acl_role_id = ++acl_sp_role_value;
+	tsk->role = assigned;
+	tsk->acl = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, tsk->role);
+
+	/* ignore additional mmap checks for processes that are writable
+	   by the default ACL */
+	obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, running_polstate.default_role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		tsk->is_writable = 1;
+	obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, tsk->role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		tsk->is_writable = 1;
+
+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
+	printk(KERN_ALERT "Assigning special role:%s subject:%s to process (%s:%d)\n", tsk->role->rolename,
+			tsk->acl->filename, tsk->comm, task_pid_nr(tsk));
+#endif
+
+out_unlock:
+	read_unlock(&grsec_exec_file_lock);
+	read_unlock(&tasklist_lock);
+	return;
+}
+
+
+static void
+gr_log_learn(const struct dentry *dentry, const struct vfsmount *mnt, const __u32 mode)
+{
+	struct task_struct *task = current;
+	const struct cred *cred = current_cred();
+
+	security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename, task->role->roletype,
+		       GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry,
+		       task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename,
+		       1UL, 1UL, gr_to_filename(dentry, mnt), (unsigned long) mode, &task->signal->saved_ip);
+
+	return;
+}
+
+static void
+gr_log_learn_uid_change(const kuid_t real, const kuid_t effective, const kuid_t fs)
+{
+	struct task_struct *task = current;
+	const struct cred *cred = current_cred();
+
+	security_learn(GR_ID_LEARN_MSG, task->role->rolename, task->role->roletype,
+		       GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry,
+		       task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename,
+		       'u', GR_GLOBAL_UID(real), GR_GLOBAL_UID(effective), GR_GLOBAL_UID(fs), &task->signal->saved_ip);
+
+	return;
+}
+
+static void
+gr_log_learn_gid_change(const kgid_t real, const kgid_t effective, const kgid_t fs)
+{
+	struct task_struct *task = current;
+	const struct cred *cred = current_cred();
+
+	security_learn(GR_ID_LEARN_MSG, task->role->rolename, task->role->roletype,
+		       GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry,
+		       task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename,
+		       'g', GR_GLOBAL_GID(real), GR_GLOBAL_GID(effective), GR_GLOBAL_GID(fs), &task->signal->saved_ip);
+
+	return;
+}
+
+static void
+gr_set_proc_res(struct task_struct *task)
+{
+	struct acl_subject_label *proc;
+	unsigned short i;
+
+	proc = task->acl;
+
+	if (proc->mode & (GR_LEARN | GR_INHERITLEARN))
+		return;
+
+	for (i = 0; i < RLIM_NLIMITS; i++) {
+		if (!(proc->resmask & (1U << i)))
+			continue;
+
+		task->signal->rlim[i].rlim_cur = proc->res[i].rlim_cur;
+		task->signal->rlim[i].rlim_max = proc->res[i].rlim_max;
+
+		if (i == RLIMIT_CPU)
+			update_rlimit_cpu(task, proc->res[i].rlim_cur);
+	}
+
+	return;
+}
+
+/* both of the below must be called with
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+	read_lock(&grsec_exec_file_lock);
+*/
+
+struct acl_subject_label *__gr_get_subject_for_task(const struct gr_policy_state *state, struct task_struct *task, const char *filename)
+{
+	char *tmpname;
+	struct acl_subject_label *tmpsubj;
+	struct file *filp;
+	struct name_entry *nmatch;
+
+	filp = task->exec_file;
+	if (filp == NULL)
+		return NULL;
+
+	/* the following is to apply the correct subject
+	   on binaries running when the RBAC system
+	   is enabled, when the binaries have been
+	   replaced or deleted since their execution
+	   -----
+	   when the RBAC system starts, the inode/dev
+	   from exec_file will be one the RBAC system
+	   is unaware of.  It only knows the inode/dev
+	   of the present file on disk, or the absence
+	   of it.
+	*/
+
+	if (filename)
+		nmatch = __lookup_name_entry(state, filename);
+	else {
+		preempt_disable();
+		tmpname = gr_to_filename_rbac(filp->f_path.dentry, filp->f_path.mnt);
+
+		nmatch = __lookup_name_entry(state, tmpname);
+		preempt_enable();
+	}
+	tmpsubj = NULL;
+	if (nmatch) {
+		if (nmatch->deleted)
+			tmpsubj = lookup_acl_subj_label_deleted(nmatch->inode, nmatch->device, task->role);
+		else
+			tmpsubj = lookup_acl_subj_label(nmatch->inode, nmatch->device, task->role);
+	}
+	/* this also works for the reload case -- if we don't match a potentially inherited subject
+	   then we fall back to a normal lookup based on the binary's ino/dev
+	*/
+	if (tmpsubj == NULL)
+		tmpsubj = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, task->role);
+
+	return tmpsubj;
+}
+
+static struct acl_subject_label *gr_get_subject_for_task(struct task_struct *task, const char *filename)
+{
+	return __gr_get_subject_for_task(&running_polstate, task, filename);
+}
+
+void __gr_apply_subject_to_task(const struct gr_policy_state *state, struct task_struct *task, struct acl_subject_label *subj)
+{
+	struct acl_object_label *obj;
+	struct file *filp;
+
+	filp = task->exec_file;
+
+	task->acl = subj;
+	task->is_writable = 0;
+	/* ignore additional mmap checks for processes that are writable 
+	   by the default ACL */
+	obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, state->default_role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		task->is_writable = 1;
+	obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, task->role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		task->is_writable = 1;
+
+	gr_set_proc_res(task);
+
+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
+	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);
+#endif
+}
+
+static void gr_apply_subject_to_task(struct task_struct *task, struct acl_subject_label *subj)
+{
+	__gr_apply_subject_to_task(&running_polstate, task, subj);
+}
+
+__u32
+gr_search_file(const struct dentry * dentry, const __u32 mode,
+	       const struct vfsmount * mnt)
+{
+	__u32 retval = mode;
+	struct acl_subject_label *curracl;
+	struct acl_object_label *currobj;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return (mode & ~GR_AUDITS);
+
+	curracl = current->acl;
+
+	currobj = chk_obj_label(dentry, mnt, curracl);
+	retval = currobj->mode & mode;
+
+	/* if we're opening a specified transfer file for writing
+	   (e.g. /dev/initctl), then transfer our role to init
+	*/
+	if (unlikely(currobj->mode & GR_INIT_TRANSFER && retval & GR_WRITE &&
+		     current->role->roletype & GR_ROLE_PERSIST)) {
+		struct task_struct *task = init_pid_ns.child_reaper;
+
+		if (task->role != current->role) {
+			struct acl_subject_label *subj;
+
+			task->acl_sp_role = 0;
+			task->acl_role_id = current->acl_role_id;
+			task->role = current->role;
+			rcu_read_lock();
+			read_lock(&grsec_exec_file_lock);
+			subj = gr_get_subject_for_task(task, NULL);
+			gr_apply_subject_to_task(task, subj);
+			read_unlock(&grsec_exec_file_lock);
+			rcu_read_unlock();
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_INIT_TRANSFER_MSG);
+		}
+	}
+
+	if (unlikely
+	    ((curracl->mode & (GR_LEARN | GR_INHERITLEARN)) && !(mode & GR_NOPTRACE)
+	     && (retval != (mode & ~(GR_AUDITS | GR_SUPPRESS))))) {
+		__u32 new_mode = mode;
+
+		new_mode &= ~(GR_AUDITS | GR_SUPPRESS);
+
+		retval = new_mode;
+
+		if (new_mode & GR_EXEC && curracl->mode & GR_INHERITLEARN)
+			new_mode |= GR_INHERIT;
+
+		if (!(mode & GR_NOLEARN))
+			gr_log_learn(dentry, mnt, new_mode);
+	}
+
+	return retval;
+}
+
+struct acl_object_label *gr_get_create_object(const struct dentry *new_dentry,
+					      const struct dentry *parent,
+					      const struct vfsmount *mnt)
+{
+	struct name_entry *match;
+	struct acl_object_label *matchpo;
+	struct acl_subject_label *curracl;
+	char *path;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return NULL;
+
+	preempt_disable();
+	path = gr_to_filename_rbac(new_dentry, mnt);
+	match = lookup_name_entry_create(path);
+
+	curracl = current->acl;
+
+	if (match) {
+		read_lock(&gr_inode_lock);
+		matchpo = lookup_acl_obj_label_create(match->inode, match->device, curracl);
+		read_unlock(&gr_inode_lock);
+
+		if (matchpo) {
+			preempt_enable();
+			return matchpo;
+		}
+	}
+
+	// lookup parent
+
+	matchpo = chk_obj_create_label(parent, mnt, curracl, path);
+
+	preempt_enable();
+	return matchpo;
+}
+
+__u32
+gr_check_create(const struct dentry * new_dentry, const struct dentry * parent,
+		const struct vfsmount * mnt, const __u32 mode)
+{
+	struct acl_object_label *matchpo;
+	__u32 retval;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return (mode & ~GR_AUDITS);
+
+	matchpo = gr_get_create_object(new_dentry, parent, mnt);
+
+	retval = matchpo->mode & mode;
+
+	if ((retval != (mode & ~(GR_AUDITS | GR_SUPPRESS)))
+	    && (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))) {
+		__u32 new_mode = mode;
+
+		new_mode &= ~(GR_AUDITS | GR_SUPPRESS);
+
+		gr_log_learn(new_dentry, mnt, new_mode);
+		return new_mode;
+	}
+
+	return retval;
+}
+
+__u32
+gr_check_link(const struct dentry * new_dentry,
+	      const struct dentry * parent_dentry,
+	      const struct vfsmount * parent_mnt,
+	      const struct dentry * old_dentry, const struct vfsmount * old_mnt)
+{
+	struct acl_object_label *obj;
+	__u32 oldmode, newmode;
+	__u32 needmode;
+	__u32 checkmodes = GR_FIND | GR_APPEND | GR_WRITE | GR_EXEC | GR_SETID | GR_READ |
+			   GR_DELETE | GR_INHERIT;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return (GR_CREATE | GR_LINK);
+
+	obj = chk_obj_label(old_dentry, old_mnt, current->acl);
+	oldmode = obj->mode;
+
+	obj = gr_get_create_object(new_dentry, parent_dentry, parent_mnt);
+	newmode = obj->mode;
+
+	needmode = newmode & checkmodes;
+
+	// old name for hardlink must have at least the permissions of the new name
+	if ((oldmode & needmode) != needmode)
+		goto bad;
+
+	// if old name had restrictions/auditing, make sure the new name does as well
+	needmode = oldmode & (GR_NOPTRACE | GR_PTRACERD | GR_INHERIT | GR_AUDITS);
+
+	// don't allow hardlinking of suid/sgid/fcapped files without permission
+	if (is_privileged_binary(old_dentry))
+		needmode |= GR_SETID;
+
+	if ((newmode & needmode) != needmode)
+		goto bad;
+
+	// enforce minimum permissions
+	if ((newmode & (GR_CREATE | GR_LINK)) == (GR_CREATE | GR_LINK))
+		return newmode;
+bad:
+	needmode = oldmode;
+	if (is_privileged_binary(old_dentry))
+		needmode |= GR_SETID;
+	
+	if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN)) {
+		gr_log_learn(old_dentry, old_mnt, needmode | GR_CREATE | GR_LINK);
+		return (GR_CREATE | GR_LINK);
+	} else if (newmode & GR_SUPPRESS)
+		return GR_SUPPRESS;
+	else
+		return 0;
+}
+
+int
+gr_check_hidden_task(const struct task_struct *task)
+{
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+
+	if (!(task->acl->mode & GR_PROCFIND) && !(current->acl->mode & GR_VIEW))
+		return 1;
+
+	return 0;
+}
+
+int
+gr_check_protected_task(const struct task_struct *task)
+{
+	if (unlikely(!(gr_status & GR_READY) || !task))
+		return 0;
+
+	if ((task->acl->mode & GR_PROTECTED) && !(current->acl->mode & GR_KILL) &&
+	    task->acl != current->acl)
+		return 1;
+
+	return 0;
+}
+
+int
+gr_check_protected_task_fowner(struct pid *pid, enum pid_type type)
+{
+	struct task_struct *p;
+	int ret = 0;
+
+	if (unlikely(!(gr_status & GR_READY) || !pid))
+		return ret;
+
+	read_lock(&tasklist_lock);
+	do_each_pid_task(pid, type, p) {
+		if ((p->acl->mode & GR_PROTECTED) && !(current->acl->mode & GR_KILL) &&
+		    p->acl != current->acl) {
+			ret = 1;
+			goto out;
+		}
+	} while_each_pid_task(pid, type, p);
+out:
+	read_unlock(&tasklist_lock);
+
+	return ret;
+}
+
+void
+gr_copy_label(struct task_struct *tsk)
+{
+	struct task_struct *p = current;
+
+	tsk->inherited = p->inherited;
+	tsk->acl_sp_role = 0;
+	tsk->acl_role_id = p->acl_role_id;
+	tsk->acl = p->acl;
+	tsk->role = p->role;
+	tsk->signal->used_accept = 0;
+	tsk->signal->curr_ip = p->signal->curr_ip;
+	tsk->signal->saved_ip = p->signal->saved_ip;
+	if (p->exec_file)
+		get_file(p->exec_file);
+	tsk->exec_file = p->exec_file;
+	tsk->is_writable = p->is_writable;
+	if (unlikely(p->signal->used_accept)) {
+		p->signal->curr_ip = 0;
+		p->signal->saved_ip = 0;
+	}
+
+	return;
+}
+
+extern int gr_process_kernel_setuid_ban(struct user_struct *user);
+
+int
+gr_check_user_change(kuid_t real, kuid_t effective, kuid_t fs)
+{
+	unsigned int i;
+	__u16 num;
+	uid_t *uidlist;
+	uid_t curuid;
+	int realok = 0;
+	int effectiveok = 0;
+	int fsok = 0;
+	uid_t globalreal, globaleffective, globalfs;
+
+#if defined(CONFIG_GRKERNSEC_KERN_LOCKOUT)
+	struct user_struct *user;
+
+	if (!uid_valid(real))
+		goto skipit;
+
+	/* find user based on global namespace */
+
+	globalreal = GR_GLOBAL_UID(real);
+
+	user = find_user(make_kuid(&init_user_ns, globalreal));
+	if (user == NULL)
+		goto skipit;
+
+	if (gr_process_kernel_setuid_ban(user)) {
+		/* for find_user */
+		free_uid(user);
+		return 1;
+	}
+
+	/* for find_user */
+	free_uid(user);
+
+skipit:
+#endif
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+
+	if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))
+		gr_log_learn_uid_change(real, effective, fs);
+
+	num = current->acl->user_trans_num;
+	uidlist = current->acl->user_transitions;
+
+	if (uidlist == NULL)
+		return 0;
+
+	if (!uid_valid(real)) {
+		realok = 1;
+		globalreal = (uid_t)-1;		
+	} else {
+		globalreal = GR_GLOBAL_UID(real);		
+	}
+	if (!uid_valid(effective)) {
+		effectiveok = 1;
+		globaleffective = (uid_t)-1;
+	} else {
+		globaleffective = GR_GLOBAL_UID(effective);
+	}
+	if (!uid_valid(fs)) {
+		fsok = 1;
+		globalfs = (uid_t)-1;
+	} else {
+		globalfs = GR_GLOBAL_UID(fs);
+	}
+
+	if (current->acl->user_trans_type & GR_ID_ALLOW) {
+		for (i = 0; i < num; i++) {
+			curuid = uidlist[i];
+			if (globalreal == curuid)
+				realok = 1;
+			if (globaleffective == curuid)
+				effectiveok = 1;
+			if (globalfs == curuid)
+				fsok = 1;
+		}
+	} else if (current->acl->user_trans_type & GR_ID_DENY) {
+		for (i = 0; i < num; i++) {
+			curuid = uidlist[i];
+			if (globalreal == curuid)
+				break;
+			if (globaleffective == curuid)
+				break;
+			if (globalfs == curuid)
+				break;
+		}
+		/* not in deny list */
+		if (i == num) {
+			realok = 1;
+			effectiveok = 1;
+			fsok = 1;
+		}
+	}
+
+	if (realok && effectiveok && fsok)
+		return 0;
+	else {
+		gr_log_int(GR_DONT_AUDIT, GR_USRCHANGE_ACL_MSG, realok ? (effectiveok ? (fsok ? 0 : globalfs) : globaleffective) : globalreal);
+		return 1;
+	}
+}
+
+int
+gr_check_group_change(kgid_t real, kgid_t effective, kgid_t fs)
+{
+	unsigned int i;
+	__u16 num;
+	gid_t *gidlist;
+	gid_t curgid;
+	int realok = 0;
+	int effectiveok = 0;
+	int fsok = 0;
+	gid_t globalreal, globaleffective, globalfs;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+
+	if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))
+		gr_log_learn_gid_change(real, effective, fs);
+
+	num = current->acl->group_trans_num;
+	gidlist = current->acl->group_transitions;
+
+	if (gidlist == NULL)
+		return 0;
+
+	if (!gid_valid(real)) {
+		realok = 1;
+		globalreal = (gid_t)-1;		
+	} else {
+		globalreal = GR_GLOBAL_GID(real);
+	}
+	if (!gid_valid(effective)) {
+		effectiveok = 1;
+		globaleffective = (gid_t)-1;		
+	} else {
+		globaleffective = GR_GLOBAL_GID(effective);
+	}
+	if (!gid_valid(fs)) {
+		fsok = 1;
+		globalfs = (gid_t)-1;		
+	} else {
+		globalfs = GR_GLOBAL_GID(fs);
+	}
+
+	if (current->acl->group_trans_type & GR_ID_ALLOW) {
+		for (i = 0; i < num; i++) {
+			curgid = gidlist[i];
+			if (globalreal == curgid)
+				realok = 1;
+			if (globaleffective == curgid)
+				effectiveok = 1;
+			if (globalfs == curgid)
+				fsok = 1;
+		}
+	} else if (current->acl->group_trans_type & GR_ID_DENY) {
+		for (i = 0; i < num; i++) {
+			curgid = gidlist[i];
+			if (globalreal == curgid)
+				break;
+			if (globaleffective == curgid)
+				break;
+			if (globalfs == curgid)
+				break;
+		}
+		/* not in deny list */
+		if (i == num) {
+			realok = 1;
+			effectiveok = 1;
+			fsok = 1;
+		}
+	}
+
+	if (realok && effectiveok && fsok)
+		return 0;
+	else {
+		gr_log_int(GR_DONT_AUDIT, GR_GRPCHANGE_ACL_MSG, realok ? (effectiveok ? (fsok ? 0 : globalfs) : globaleffective) : globalreal);
+		return 1;
+	}
+}
+
+extern int gr_acl_is_capable(const int cap);
+
+void
+gr_set_role_label(struct task_struct *task, const kuid_t kuid, const kgid_t kgid)
+{
+	struct acl_role_label *role = task->role;
+	struct acl_subject_label *subj = NULL;
+	struct acl_object_label *obj;
+	struct file *filp;
+	uid_t uid;
+	gid_t gid;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return;
+
+	uid = GR_GLOBAL_UID(kuid);
+	gid = GR_GLOBAL_GID(kgid);
+
+	filp = task->exec_file;
+
+	/* kernel process, we'll give them the kernel role */
+	if (unlikely(!filp)) {
+		task->role = running_polstate.kernel_role;
+		task->acl = running_polstate.kernel_role->root_label;
+		return;
+	} else if (!task->role || !(task->role->roletype & GR_ROLE_SPECIAL)) {
+		/* save the current ip at time of role lookup so that the proper
+		   IP will be learned for role_allowed_ip */
+		task->signal->saved_ip = task->signal->curr_ip;
+		role = lookup_acl_role_label(task, uid, gid);
+	}
+
+	/* don't change the role if we're not a privileged process */
+	if (role && task->role != role &&
+	    (((role->roletype & GR_ROLE_USER) && !gr_acl_is_capable(CAP_SETUID)) ||
+	     ((role->roletype & GR_ROLE_GROUP) && !gr_acl_is_capable(CAP_SETGID))))
+		return;
+
+	/* perform subject lookup in possibly new role
+	   we can use this result below in the case where role == task->role
+	*/
+	subj = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, role);
+
+	/* if we changed uid/gid, but result in the same role
+	   and are using inheritance, don't lose the inherited subject
+	   if current subject is other than what normal lookup
+	   would result in, we arrived via inheritance, don't
+	   lose subject
+	*/
+	if (role != task->role || (!(task->acl->mode & GR_INHERITLEARN) &&
+				   (subj == task->acl)))
+		task->acl = subj;
+
+	/* leave task->inherited unaffected */
+
+	task->role = role;
+
+	task->is_writable = 0;
+
+	/* ignore additional mmap checks for processes that are writable 
+	   by the default ACL */
+	obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, running_polstate.default_role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		task->is_writable = 1;
+	obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, task->role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		task->is_writable = 1;
+
+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
+	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);
+#endif
+
+	gr_set_proc_res(task);
+
+	return;
+}
+
+int
+gr_set_proc_label(const struct dentry *dentry, const struct vfsmount *mnt,
+		  const int unsafe_flags)
+{
+	struct task_struct *task = current;
+	struct acl_subject_label *newacl;
+	struct acl_object_label *obj;
+	__u32 retmode;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+
+	newacl = chk_subj_label(dentry, mnt, task->role);
+
+	/* special handling for if we did an strace -f -p <pid> from an admin role, where pid then
+	   did an exec
+	*/
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+	if (task->ptrace && task->parent && ((task->parent->role->roletype & GR_ROLE_GOD) ||
+	    (task->parent->acl->mode & GR_POVERRIDE))) {
+		read_unlock(&tasklist_lock);
+		rcu_read_unlock();
+		goto skip_check;
+	}
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+
+	if (unsafe_flags && !(task->acl->mode & GR_POVERRIDE) && (task->acl != newacl) &&
+	     !(task->role->roletype & GR_ROLE_GOD) &&
+	     !gr_search_file(dentry, GR_PTRACERD, mnt) &&
+	     !(task->acl->mode & (GR_LEARN | GR_INHERITLEARN))) {
+		if (unsafe_flags & LSM_UNSAFE_SHARE)
+			gr_log_fs_generic(GR_DONT_AUDIT, GR_UNSAFESHARE_EXEC_ACL_MSG, dentry, mnt);
+		else
+			gr_log_fs_generic(GR_DONT_AUDIT, GR_PTRACE_EXEC_ACL_MSG, dentry, mnt);
+		return -EACCES;
+	}
+
+skip_check:
+
+	obj = chk_obj_label(dentry, mnt, task->acl);
+	retmode = obj->mode & (GR_INHERIT | GR_AUDIT_INHERIT);
+
+	if (!(task->acl->mode & GR_INHERITLEARN) &&
+	    ((newacl->mode & GR_LEARN) || !(retmode & GR_INHERIT))) {
+		if (obj->nested)
+			task->acl = obj->nested;
+		else
+			task->acl = newacl;
+		task->inherited = 0;
+	} else {
+		task->inherited = 1;
+		if (retmode & GR_INHERIT && retmode & GR_AUDIT_INHERIT)
+			gr_log_str_fs(GR_DO_AUDIT, GR_INHERIT_ACL_MSG, task->acl->filename, dentry, mnt);
+	}
+
+	task->is_writable = 0;
+
+	/* ignore additional mmap checks for processes that are writable 
+	   by the default ACL */
+	obj = chk_obj_label(dentry, mnt, running_polstate.default_role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		task->is_writable = 1;
+	obj = chk_obj_label(dentry, mnt, task->role->root_label);
+	if (unlikely(obj->mode & GR_WRITE))
+		task->is_writable = 1;
+
+	gr_set_proc_res(task);
+
+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
+	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);
+#endif
+	return 0;
+}
+
+/* always called with valid inodev ptr */
+static void
+do_handle_delete(struct inodev_entry *inodev, const ino_t ino, const dev_t dev)
+{
+	struct acl_object_label *matchpo;
+	struct acl_subject_label *matchps;
+	struct acl_subject_label *subj;
+	struct acl_role_label *role;
+	unsigned int x;
+
+	FOR_EACH_ROLE_START(role)
+		FOR_EACH_SUBJECT_START(role, subj, x)
+			if ((matchpo = lookup_acl_obj_label(ino, dev, subj)) != NULL)
+				matchpo->mode |= GR_DELETED;
+		FOR_EACH_SUBJECT_END(subj,x)
+		FOR_EACH_NESTED_SUBJECT_START(role, subj)
+			/* nested subjects aren't in the role's subj_hash table */
+			if ((matchpo = lookup_acl_obj_label(ino, dev, subj)) != NULL)
+				matchpo->mode |= GR_DELETED;
+		FOR_EACH_NESTED_SUBJECT_END(subj)
+		if ((matchps = lookup_acl_subj_label(ino, dev, role)) != NULL)
+			matchps->mode |= GR_DELETED;
+	FOR_EACH_ROLE_END(role)
+
+	inodev->nentry->deleted = 1;
+
+	return;
+}
+
+void
+gr_handle_delete(const ino_t ino, const dev_t dev)
+{
+	struct inodev_entry *inodev;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return;
+
+	write_lock(&gr_inode_lock);
+	inodev = lookup_inodev_entry(ino, dev);
+	if (inodev != NULL)
+		do_handle_delete(inodev, ino, dev);
+	write_unlock(&gr_inode_lock);
+
+	return;
+}
+
+static void
+update_acl_obj_label(const ino_t oldinode, const dev_t olddevice,
+		     const ino_t newinode, const dev_t newdevice,
+		     struct acl_subject_label *subj)
+{
+	unsigned int index = gr_fhash(oldinode, olddevice, subj->obj_hash_size);
+	struct acl_object_label *match;
+
+	match = subj->obj_hash[index];
+
+	while (match && (match->inode != oldinode ||
+	       match->device != olddevice ||
+	       !(match->mode & GR_DELETED)))
+		match = match->next;
+
+	if (match && (match->inode == oldinode)
+	    && (match->device == olddevice)
+	    && (match->mode & GR_DELETED)) {
+		if (match->prev == NULL) {
+			subj->obj_hash[index] = match->next;
+			if (match->next != NULL)
+				match->next->prev = NULL;
+		} else {
+			match->prev->next = match->next;
+			if (match->next != NULL)
+				match->next->prev = match->prev;
+		}
+		match->prev = NULL;
+		match->next = NULL;
+		match->inode = newinode;
+		match->device = newdevice;
+		match->mode &= ~GR_DELETED;
+
+		insert_acl_obj_label(match, subj);
+	}
+
+	return;
+}
+
+static void
+update_acl_subj_label(const ino_t oldinode, const dev_t olddevice,
+		      const ino_t newinode, const dev_t newdevice,
+		      struct acl_role_label *role)
+{
+	unsigned int index = gr_fhash(oldinode, olddevice, role->subj_hash_size);
+	struct acl_subject_label *match;
+
+	match = role->subj_hash[index];
+
+	while (match && (match->inode != oldinode ||
+	       match->device != olddevice ||
+	       !(match->mode & GR_DELETED)))
+		match = match->next;
+
+	if (match && (match->inode == oldinode)
+	    && (match->device == olddevice)
+	    && (match->mode & GR_DELETED)) {
+		if (match->prev == NULL) {
+			role->subj_hash[index] = match->next;
+			if (match->next != NULL)
+				match->next->prev = NULL;
+		} else {
+			match->prev->next = match->next;
+			if (match->next != NULL)
+				match->next->prev = match->prev;
+		}
+		match->prev = NULL;
+		match->next = NULL;
+		match->inode = newinode;
+		match->device = newdevice;
+		match->mode &= ~GR_DELETED;
+
+		insert_acl_subj_label(match, role);
+	}
+
+	return;
+}
+
+static void
+update_inodev_entry(const ino_t oldinode, const dev_t olddevice,
+		    const ino_t newinode, const dev_t newdevice)
+{
+	unsigned int index = gr_fhash(oldinode, olddevice, running_polstate.inodev_set.i_size);
+	struct inodev_entry *match;
+
+	match = running_polstate.inodev_set.i_hash[index];
+
+	while (match && (match->nentry->inode != oldinode ||
+	       match->nentry->device != olddevice || !match->nentry->deleted))
+		match = match->next;
+
+	if (match && (match->nentry->inode == oldinode)
+	    && (match->nentry->device == olddevice) &&
+	    match->nentry->deleted) {
+		if (match->prev == NULL) {
+			running_polstate.inodev_set.i_hash[index] = match->next;
+			if (match->next != NULL)
+				match->next->prev = NULL;
+		} else {
+			match->prev->next = match->next;
+			if (match->next != NULL)
+				match->next->prev = match->prev;
+		}
+		match->prev = NULL;
+		match->next = NULL;
+		match->nentry->inode = newinode;
+		match->nentry->device = newdevice;
+		match->nentry->deleted = 0;
+
+		insert_inodev_entry(match);
+	}
+
+	return;
+}
+
+static void
+__do_handle_create(const struct name_entry *matchn, ino_t ino, dev_t dev)
+{
+	struct acl_subject_label *subj;
+	struct acl_role_label *role;
+	unsigned int x;
+
+	FOR_EACH_ROLE_START(role)
+		update_acl_subj_label(matchn->inode, matchn->device, ino, dev, role);
+
+		FOR_EACH_NESTED_SUBJECT_START(role, subj)
+			if ((subj->inode == ino) && (subj->device == dev)) {
+				subj->inode = ino;
+				subj->device = dev;
+			}
+			/* nested subjects aren't in the role's subj_hash table */
+			update_acl_obj_label(matchn->inode, matchn->device,
+					     ino, dev, subj);
+		FOR_EACH_NESTED_SUBJECT_END(subj)
+		FOR_EACH_SUBJECT_START(role, subj, x)
+			update_acl_obj_label(matchn->inode, matchn->device,
+					     ino, dev, subj);
+		FOR_EACH_SUBJECT_END(subj,x)
+	FOR_EACH_ROLE_END(role)
+
+	update_inodev_entry(matchn->inode, matchn->device, ino, dev);
+
+	return;
+}
+
+static void
+do_handle_create(const struct name_entry *matchn, const struct dentry *dentry,
+		 const struct vfsmount *mnt)
+{
+	ino_t ino = dentry->d_inode->i_ino;
+	dev_t dev = __get_dev(dentry);
+
+	__do_handle_create(matchn, ino, dev);	
+
+	return;
+}
+
+void
+gr_handle_create(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	struct name_entry *matchn;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return;
+
+	preempt_disable();
+	matchn = lookup_name_entry(gr_to_filename_rbac(dentry, mnt));
+
+	if (unlikely((unsigned long)matchn)) {
+		write_lock(&gr_inode_lock);
+		do_handle_create(matchn, dentry, mnt);
+		write_unlock(&gr_inode_lock);
+	}
+	preempt_enable();
+
+	return;
+}
+
+void
+gr_handle_proc_create(const struct dentry *dentry, const struct inode *inode)
+{
+	struct name_entry *matchn;
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return;
+
+	preempt_disable();
+	matchn = lookup_name_entry(gr_to_proc_filename_rbac(dentry, init_pid_ns.proc_mnt));
+
+	if (unlikely((unsigned long)matchn)) {
+		write_lock(&gr_inode_lock);
+		__do_handle_create(matchn, inode->i_ino, inode->i_sb->s_dev);
+		write_unlock(&gr_inode_lock);
+	}
+	preempt_enable();
+
+	return;
+}
+
+void
+gr_handle_rename(struct inode *old_dir, struct inode *new_dir,
+		 struct dentry *old_dentry,
+		 struct dentry *new_dentry,
+		 struct vfsmount *mnt, const __u8 replace, unsigned int flags)
+{
+	struct name_entry *matchn;
+	struct name_entry *matchn2 = NULL;
+	struct inodev_entry *inodev;
+	struct inode *inode = new_dentry->d_inode;
+	ino_t old_ino = old_dentry->d_inode->i_ino;
+	dev_t old_dev = __get_dev(old_dentry);
+	unsigned int exchange = flags & RENAME_EXCHANGE;
+
+	/* vfs_rename swaps the name and parent link for old_dentry and
+	   new_dentry
+	   at this point, old_dentry has the new name, parent link, and inode
+	   for the renamed file
+	   if a file is being replaced by a rename, new_dentry has the inode
+	   and name for the replaced file
+	*/
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return;
+
+	preempt_disable();
+	matchn = lookup_name_entry(gr_to_filename_rbac(old_dentry, mnt));
+
+	/* exchange cases:
+	   a filename exists for the source, but not dest
+		do a recreate on source
+	   a filename exists for the dest, but not source
+		do a recreate on dest
+	   a filename exists for both source and dest
+		delete source and dest, then create source and dest
+	   a filename exists for neither source nor dest
+		no updates needed
+
+	   the name entry lookups get us the old inode/dev associated with
+	   each name, so do the deletes first (if possible) so that when
+	   we do the create, we pick up on the right entries
+	*/
+
+	if (exchange)
+		matchn2 = lookup_name_entry(gr_to_filename_rbac(new_dentry, mnt));
+
+	/* we wouldn't have to check d_inode if it weren't for
+	   NFS silly-renaming
+	 */
+
+	write_lock(&gr_inode_lock);
+	if (unlikely((replace || exchange) && inode)) {
+		ino_t new_ino = inode->i_ino;
+		dev_t new_dev = __get_dev(new_dentry);
+
+		inodev = lookup_inodev_entry(new_ino, new_dev);
+		if (inodev != NULL && ((inode->i_nlink <= 1) || S_ISDIR(inode->i_mode)))
+			do_handle_delete(inodev, new_ino, new_dev);
+	}
+
+	inodev = lookup_inodev_entry(old_ino, old_dev);
+	if (inodev != NULL && ((old_dentry->d_inode->i_nlink <= 1) || S_ISDIR(old_dentry->d_inode->i_mode)))
+		do_handle_delete(inodev, old_ino, old_dev);
+
+	if (unlikely(matchn != NULL))
+		do_handle_create(matchn, old_dentry, mnt);
+
+	if (unlikely(matchn2 != NULL))
+		do_handle_create(matchn2, new_dentry, mnt);
+
+	write_unlock(&gr_inode_lock);
+	preempt_enable();
+
+	return;
+}
+
+#if defined(CONFIG_GRKERNSEC_RESLOG) || !defined(CONFIG_GRKERNSEC_NO_RBAC)
+static const unsigned long res_learn_bumps[GR_NLIMITS] = {
+	[RLIMIT_CPU] = GR_RLIM_CPU_BUMP,
+	[RLIMIT_FSIZE] = GR_RLIM_FSIZE_BUMP,
+	[RLIMIT_DATA] = GR_RLIM_DATA_BUMP,
+	[RLIMIT_STACK] = GR_RLIM_STACK_BUMP,
+	[RLIMIT_CORE] = GR_RLIM_CORE_BUMP,
+	[RLIMIT_RSS] = GR_RLIM_RSS_BUMP,
+	[RLIMIT_NPROC] = GR_RLIM_NPROC_BUMP,
+	[RLIMIT_NOFILE] = GR_RLIM_NOFILE_BUMP,
+	[RLIMIT_MEMLOCK] = GR_RLIM_MEMLOCK_BUMP,
+	[RLIMIT_AS] = GR_RLIM_AS_BUMP,
+	[RLIMIT_LOCKS] = GR_RLIM_LOCKS_BUMP,
+	[RLIMIT_SIGPENDING] = GR_RLIM_SIGPENDING_BUMP,
+	[RLIMIT_MSGQUEUE] = GR_RLIM_MSGQUEUE_BUMP,
+	[RLIMIT_NICE] = GR_RLIM_NICE_BUMP,
+	[RLIMIT_RTPRIO] = GR_RLIM_RTPRIO_BUMP,
+	[RLIMIT_RTTIME] = GR_RLIM_RTTIME_BUMP
+};
+
+void
+gr_learn_resource(const struct task_struct *task,
+		  const int res, const unsigned long wanted, const int gt)
+{
+	struct acl_subject_label *acl;
+	const struct cred *cred;
+
+	if (unlikely((gr_status & GR_READY) &&
+		     task->acl && (task->acl->mode & (GR_LEARN | GR_INHERITLEARN))))
+		goto skip_reslog;
+
+	gr_log_resource(task, res, wanted, gt);
+skip_reslog:
+
+	if (unlikely(!(gr_status & GR_READY) || !wanted || res >= GR_NLIMITS))
+		return;
+
+	acl = task->acl;
+
+	if (likely(!acl || !(acl->mode & (GR_LEARN | GR_INHERITLEARN)) ||
+		   !(acl->resmask & (1U << (unsigned short) res))))
+		return;
+
+	if (wanted >= acl->res[res].rlim_cur) {
+		unsigned long res_add;
+
+		res_add = wanted + res_learn_bumps[res];
+
+		acl->res[res].rlim_cur = res_add;
+
+		if (wanted > acl->res[res].rlim_max)
+			acl->res[res].rlim_max = res_add;
+
+		/* only log the subject filename, since resource logging is supported for
+		   single-subject learning only */
+		rcu_read_lock();
+		cred = __task_cred(task);
+		security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename,
+			       task->role->roletype, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), acl->filename,
+			       acl->filename, acl->res[res].rlim_cur, acl->res[res].rlim_max,
+			       "", (unsigned long) res, &task->signal->saved_ip);
+		rcu_read_unlock();
+	}
+
+	return;
+}
+EXPORT_SYMBOL_GPL(gr_learn_resource);
+#endif
+
+#if defined(CONFIG_PAX_HAVE_ACL_FLAGS) && (defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR))
+void
+pax_set_initial_flags(struct linux_binprm *bprm)
+{
+	struct task_struct *task = current;
+        struct acl_subject_label *proc;
+	unsigned long flags;
+
+        if (unlikely(!(gr_status & GR_READY)))
+                return;
+
+	flags = pax_get_flags(task);
+
+        proc = task->acl;
+
+	if (proc->pax_flags & GR_PAX_DISABLE_PAGEEXEC)
+		flags &= ~MF_PAX_PAGEEXEC;
+	if (proc->pax_flags & GR_PAX_DISABLE_SEGMEXEC)
+		flags &= ~MF_PAX_SEGMEXEC;
+	if (proc->pax_flags & GR_PAX_DISABLE_RANDMMAP)
+		flags &= ~MF_PAX_RANDMMAP;
+	if (proc->pax_flags & GR_PAX_DISABLE_EMUTRAMP)
+		flags &= ~MF_PAX_EMUTRAMP;
+	if (proc->pax_flags & GR_PAX_DISABLE_MPROTECT)
+		flags &= ~MF_PAX_MPROTECT;
+
+	if (proc->pax_flags & GR_PAX_ENABLE_PAGEEXEC)
+		flags |= MF_PAX_PAGEEXEC;
+	if (proc->pax_flags & GR_PAX_ENABLE_SEGMEXEC)
+		flags |= MF_PAX_SEGMEXEC;
+	if (proc->pax_flags & GR_PAX_ENABLE_RANDMMAP)
+		flags |= MF_PAX_RANDMMAP;
+	if (proc->pax_flags & GR_PAX_ENABLE_EMUTRAMP)
+		flags |= MF_PAX_EMUTRAMP;
+	if (proc->pax_flags & GR_PAX_ENABLE_MPROTECT)
+		flags |= MF_PAX_MPROTECT;
+
+	pax_set_flags(task, flags);
+
+        return;
+}
+#endif
+
+int
+gr_handle_proc_ptrace(struct task_struct *task)
+{
+	struct file *filp;
+	struct task_struct *tmp = task;
+	struct task_struct *curtemp = current;
+	__u32 retmode;
+
+#ifndef CONFIG_GRKERNSEC_HARDEN_PTRACE
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+#endif
+
+	read_lock(&tasklist_lock);
+	read_lock(&grsec_exec_file_lock);
+	filp = task->exec_file;
+
+	while (task_pid_nr(tmp) > 0) {
+		if (tmp == curtemp)
+			break;
+		tmp = tmp->real_parent;
+	}
+
+	if (!filp || (task_pid_nr(tmp) == 0 && ((grsec_enable_harden_ptrace && gr_is_global_nonroot(current_uid()) && !(gr_status & GR_READY)) ||
+				((gr_status & GR_READY)	&& !(current->acl->mode & GR_RELAXPTRACE))))) {
+		read_unlock(&grsec_exec_file_lock);
+		read_unlock(&tasklist_lock);
+		return 1;
+	}
+
+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
+	if (!(gr_status & GR_READY)) {
+		read_unlock(&grsec_exec_file_lock);
+		read_unlock(&tasklist_lock);
+		return 0;
+	}
+#endif
+
+	retmode = gr_search_file(filp->f_path.dentry, GR_NOPTRACE, filp->f_path.mnt);
+	read_unlock(&grsec_exec_file_lock);
+	read_unlock(&tasklist_lock);
+
+	if (retmode & GR_NOPTRACE)
+		return 1;
+
+	if (!(current->acl->mode & GR_POVERRIDE) && !(current->role->roletype & GR_ROLE_GOD)
+	    && (current->acl != task->acl || (current->acl != current->role->root_label
+	    && task_pid_nr(current) != task_pid_nr(task))))
+		return 1;
+
+	return 0;
+}
+
+void task_grsec_rbac(struct seq_file *m, struct task_struct *p)
+{
+	if (unlikely(!(gr_status & GR_READY)))
+		return;
+
+	if (!(current->role->roletype & GR_ROLE_GOD))
+		return;
+
+	seq_printf(m, "RBAC:\t%.64s:%c:%.950s\n",
+			p->role->rolename, gr_task_roletype_to_char(p),
+			p->acl->filename);
+}
+
+int
+gr_handle_ptrace(struct task_struct *task, const long request)
+{
+	struct task_struct *tmp = task;
+	struct task_struct *curtemp = current;
+	__u32 retmode;
+
+#ifndef CONFIG_GRKERNSEC_HARDEN_PTRACE
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+#endif
+	if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {
+		read_lock(&tasklist_lock);
+		while (task_pid_nr(tmp) > 0) {
+			if (tmp == curtemp)
+				break;
+			tmp = tmp->real_parent;
+		}
+
+		if (task_pid_nr(tmp) == 0 && ((grsec_enable_harden_ptrace && gr_is_global_nonroot(current_uid()) && !(gr_status & GR_READY)) ||
+					((gr_status & GR_READY)	&& !(current->acl->mode & GR_RELAXPTRACE)))) {
+			read_unlock(&tasklist_lock);
+			gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task);
+			return 1;
+		}
+		read_unlock(&tasklist_lock);
+	}
+
+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
+	if (!(gr_status & GR_READY))
+		return 0;
+#endif
+
+	read_lock(&grsec_exec_file_lock);
+	if (unlikely(!task->exec_file)) {
+		read_unlock(&grsec_exec_file_lock);
+		return 0;
+	}
+
+	retmode = gr_search_file(task->exec_file->f_path.dentry, GR_PTRACERD | GR_NOPTRACE, task->exec_file->f_path.mnt);
+	read_unlock(&grsec_exec_file_lock);
+
+	if (retmode & GR_NOPTRACE) {
+		gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task);
+		return 1;
+	}
+		
+	if (retmode & GR_PTRACERD) {
+		switch (request) {
+		case PTRACE_SEIZE:
+		case PTRACE_POKETEXT:
+		case PTRACE_POKEDATA:
+		case PTRACE_POKEUSR:
+#if !defined(CONFIG_PPC32) && !defined(CONFIG_PPC64) && !defined(CONFIG_PARISC) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
+		case PTRACE_SETREGS:
+		case PTRACE_SETFPREGS:
+#endif
+#ifdef CONFIG_X86
+		case PTRACE_SETFPXREGS:
+#endif
+#ifdef CONFIG_ALTIVEC
+		case PTRACE_SETVRREGS:
+#endif
+			return 1;
+		default:
+			return 0;
+		}
+	} else if (!(current->acl->mode & GR_POVERRIDE) &&
+		   !(current->role->roletype & GR_ROLE_GOD) &&
+		   (current->acl != task->acl)) {
+		gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int is_writable_mmap(const struct file *filp)
+{
+	struct task_struct *task = current;
+	struct acl_object_label *obj, *obj2;
+
+	if (gr_status & GR_READY && !(task->acl->mode & GR_OVERRIDE) &&
+	    !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))) {
+		obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, running_polstate.default_role->root_label);
+		obj2 = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt,
+				     task->role->root_label);
+		if (unlikely((obj->mode & GR_WRITE) || (obj2->mode & GR_WRITE))) {
+			gr_log_fs_generic(GR_DONT_AUDIT, GR_WRITLIB_ACL_MSG, filp->f_path.dentry, filp->f_path.mnt);
+			return 1;
+		}
+	}
+	return 0;
+}
+
+int
+gr_acl_handle_mmap(const struct file *file, const unsigned long prot)
+{
+	__u32 mode;
+
+	if (unlikely(!file || !(prot & PROT_EXEC)))
+		return 1;
+
+	if (is_writable_mmap(file))
+		return 0;
+
+	mode =
+	    gr_search_file(file->f_path.dentry,
+			   GR_EXEC | GR_AUDIT_EXEC | GR_SUPPRESS,
+			   file->f_path.mnt);
+
+	if (!gr_tpe_allow(file))
+		return 0;
+
+	if (unlikely(!(mode & GR_EXEC) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_MMAP_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
+		return 0;
+	} else if (unlikely(!(mode & GR_EXEC))) {
+		return 0;
+	} else if (unlikely(mode & GR_EXEC && mode & GR_AUDIT_EXEC)) {
+		gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_MMAP_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
+		return 1;
+	}
+
+	return 1;
+}
+
+int
+gr_acl_handle_mprotect(const struct file *file, const unsigned long prot)
+{
+	__u32 mode;
+
+	if (unlikely(!file || !(prot & PROT_EXEC)))
+		return 1;
+
+	if (is_writable_mmap(file))
+		return 0;
+
+	mode =
+	    gr_search_file(file->f_path.dentry,
+			   GR_EXEC | GR_AUDIT_EXEC | GR_SUPPRESS,
+			   file->f_path.mnt);
+
+	if (!gr_tpe_allow(file))
+		return 0;
+
+	if (unlikely(!(mode & GR_EXEC) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_MPROTECT_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
+		return 0;
+	} else if (unlikely(!(mode & GR_EXEC))) {
+		return 0;
+	} else if (unlikely(mode & GR_EXEC && mode & GR_AUDIT_EXEC)) {
+		gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_MPROTECT_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
+		return 1;
+	}
+
+	return 1;
+}
+
+void
+gr_acl_handle_psacct(struct task_struct *task, const long code)
+{
+	unsigned long runtime, cputime;
+	cputime_t utime, stime;
+	unsigned int wday, cday;
+	__u8 whr, chr;
+	__u8 wmin, cmin;
+	__u8 wsec, csec;
+	struct timespec timeval;
+
+	if (unlikely(!(gr_status & GR_READY) || !task->acl ||
+		     !(task->acl->mode & GR_PROCACCT)))
+		return;
+
+	do_posix_clock_monotonic_gettime(&timeval);
+	runtime = timeval.tv_sec - task->start_time.tv_sec;
+	wday = runtime / (60 * 60 * 24);
+	runtime -= wday * (60 * 60 * 24);
+	whr = runtime / (60 * 60);
+	runtime -= whr * (60 * 60);
+	wmin = runtime / 60;
+	runtime -= wmin * 60;
+	wsec = runtime;
+
+	task_cputime(task, &utime, &stime);
+	cputime = cputime_to_secs(utime + stime);
+	cday = cputime / (60 * 60 * 24);
+	cputime -= cday * (60 * 60 * 24);
+	chr = cputime / (60 * 60);
+	cputime -= chr * (60 * 60);
+	cmin = cputime / 60;
+	cputime -= cmin * 60;
+	csec = cputime;
+
+	gr_log_procacct(GR_DO_AUDIT, GR_ACL_PROCACCT_MSG, task, wday, whr, wmin, wsec, cday, chr, cmin, csec, code);
+
+	return;
+}
+
+#ifdef CONFIG_TASKSTATS
+int gr_is_taskstats_denied(int pid)
+{
+	struct task_struct *task;
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	const struct cred *cred;
+#endif
+	int ret = 0;
+
+	/* restrict taskstats viewing to un-chrooted root users
+	   who have the 'view' subject flag if the RBAC system is enabled
+	*/
+
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+	task = find_task_by_vpid(pid);
+	if (task) {
+#ifdef CONFIG_GRKERNSEC_CHROOT
+		if (proc_is_chrooted(task))
+			ret = -EACCES;
+#endif
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+		cred = __task_cred(task);
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+		if (gr_is_global_nonroot(cred->uid))
+			ret = -EACCES;
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+		if (gr_is_global_nonroot(cred->uid) && !groups_search(cred->group_info, grsec_proc_gid))
+			ret = -EACCES;
+#endif
+#endif
+		if (gr_status & GR_READY) {
+			if (!(task->acl->mode & GR_VIEW))
+				ret = -EACCES;
+		}
+	} else
+		ret = -ENOENT;
+
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+
+	return ret;
+}
+#endif
+
+/* AUXV entries are filled via a descendant of search_binary_handler
+   after we've already applied the subject for the target
+*/
+int gr_acl_enable_at_secure(void)
+{
+	if (unlikely(!(gr_status & GR_READY)))
+		return 0;
+
+	if (current->acl->mode & GR_ATSECURE)
+		return 1;
+
+	return 0;
+}
+	
+int gr_acl_handle_filldir(const struct file *file, const char *name, const unsigned int namelen, const ino_t ino)
+{
+	struct task_struct *task = current;
+	struct dentry *dentry = file->f_path.dentry;
+	struct vfsmount *mnt = file->f_path.mnt;
+	struct acl_object_label *obj, *tmp;
+	struct acl_subject_label *subj;
+	unsigned int bufsize;
+	int is_not_root;
+	char *path;
+	dev_t dev = __get_dev(dentry);
+
+	if (unlikely(!(gr_status & GR_READY)))
+		return 1;
+
+	if (task->acl->mode & (GR_LEARN | GR_INHERITLEARN))
+		return 1;
+
+	/* ignore Eric Biederman */
+	if (IS_PRIVATE(dentry->d_inode))
+		return 1;
+
+	subj = task->acl;
+	read_lock(&gr_inode_lock);
+	do {
+		obj = lookup_acl_obj_label(ino, dev, subj);
+		if (obj != NULL) {
+			read_unlock(&gr_inode_lock);
+			return (obj->mode & GR_FIND) ? 1 : 0;
+		}
+	} while ((subj = subj->parent_subject));
+	read_unlock(&gr_inode_lock);
+	
+	/* this is purely an optimization since we're looking for an object
+	   for the directory we're doing a readdir on
+	   if it's possible for any globbed object to match the entry we're
+	   filling into the directory, then the object we find here will be
+	   an anchor point with attached globbed objects
+	*/
+	obj = chk_obj_label_noglob(dentry, mnt, task->acl);
+	if (obj->globbed == NULL)
+		return (obj->mode & GR_FIND) ? 1 : 0;
+
+	is_not_root = ((obj->filename[0] == '/') &&
+		   (obj->filename[1] == '\0')) ? 0 : 1;
+	bufsize = PAGE_SIZE - namelen - is_not_root;
+
+	/* check bufsize > PAGE_SIZE || bufsize == 0 */
+	if (unlikely((bufsize - 1) > (PAGE_SIZE - 1)))
+		return 1;
+
+	preempt_disable();
+	path = d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0], smp_processor_id()),
+			   bufsize);
+
+	bufsize = strlen(path);
+
+	/* if base is "/", don't append an additional slash */
+	if (is_not_root)
+		*(path + bufsize) = '/';
+	memcpy(path + bufsize + is_not_root, name, namelen);
+	*(path + bufsize + namelen + is_not_root) = '\0';
+
+	tmp = obj->globbed;
+	while (tmp) {
+		if (!glob_match(tmp->filename, path)) {
+			preempt_enable();
+			return (tmp->mode & GR_FIND) ? 1 : 0;
+		}
+		tmp = tmp->next;
+	}
+	preempt_enable();
+	return (obj->mode & GR_FIND) ? 1 : 0;
+}
+
+void gr_put_exec_file(struct task_struct *task)
+{
+	struct file *filp;  
+
+	write_lock(&grsec_exec_file_lock);
+	filp = task->exec_file;   
+	task->exec_file = NULL;
+	write_unlock(&grsec_exec_file_lock);
+
+	if (filp)
+		fput(filp);
+
+	return;
+}
+
+
+#ifdef CONFIG_NETFILTER_XT_MATCH_GRADM_MODULE
+EXPORT_SYMBOL_GPL(gr_acl_is_enabled);
+#endif
+#ifdef CONFIG_SECURITY
+EXPORT_SYMBOL_GPL(gr_check_user_change);
+EXPORT_SYMBOL_GPL(gr_check_group_change);
+#endif
+
diff --git a/grsecurity/gracl_alloc.c b/grsecurity/gracl_alloc.c
new file mode 100644
index 0000000..18ffbbd
--- /dev/null
+++ b/grsecurity/gracl_alloc.c
@@ -0,0 +1,105 @@
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/gracl.h>
+#include <linux/grsecurity.h>
+
+static struct gr_alloc_state __current_alloc_state = { 1, 1, NULL };
+struct gr_alloc_state *current_alloc_state = &__current_alloc_state;
+
+static __inline__ int
+alloc_pop(void)
+{
+	if (current_alloc_state->alloc_stack_next == 1)
+		return 0;
+
+	kfree(current_alloc_state->alloc_stack[current_alloc_state->alloc_stack_next - 2]);
+
+	current_alloc_state->alloc_stack_next--;
+
+	return 1;
+}
+
+static __inline__ int
+alloc_push(void *buf)
+{
+	if (current_alloc_state->alloc_stack_next >= current_alloc_state->alloc_stack_size)
+		return 1;
+
+	current_alloc_state->alloc_stack[current_alloc_state->alloc_stack_next - 1] = buf;
+
+	current_alloc_state->alloc_stack_next++;
+
+	return 0;
+}
+
+void *
+acl_alloc(unsigned long len)
+{
+	void *ret = NULL;
+
+	if (!len || len > PAGE_SIZE)
+		goto out;
+
+	ret = kmalloc(len, GFP_KERNEL);
+
+	if (ret) {
+		if (alloc_push(ret)) {
+			kfree(ret);
+			ret = NULL;
+		}
+	}
+
+out:
+	return ret;
+}
+
+void *
+acl_alloc_num(unsigned long num, unsigned long len)
+{
+	if (!len || (num > (PAGE_SIZE / len)))
+		return NULL;
+
+	return acl_alloc(num * len);
+}
+
+void
+acl_free_all(void)
+{
+	if (!current_alloc_state->alloc_stack)
+		return;
+
+	while (alloc_pop()) ;
+
+	if (current_alloc_state->alloc_stack) {
+		if ((current_alloc_state->alloc_stack_size * sizeof (void *)) <= PAGE_SIZE)
+			kfree(current_alloc_state->alloc_stack);
+		else
+			vfree(current_alloc_state->alloc_stack);
+	}
+
+	current_alloc_state->alloc_stack = NULL;
+	current_alloc_state->alloc_stack_size = 1;
+	current_alloc_state->alloc_stack_next = 1;
+
+	return;
+}
+
+int
+acl_alloc_stack_init(unsigned long size)
+{
+	if ((size * sizeof (void *)) <= PAGE_SIZE)
+		current_alloc_state->alloc_stack =
+		    (void **) kmalloc(size * sizeof (void *), GFP_KERNEL);
+	else
+		current_alloc_state->alloc_stack = (void **) vmalloc(size * sizeof (void *));
+
+	current_alloc_state->alloc_stack_size = size;
+	current_alloc_state->alloc_stack_next = 1;
+
+	if (!current_alloc_state->alloc_stack)
+		return 0;
+	else
+		return 1;
+}
diff --git a/grsecurity/gracl_cap.c b/grsecurity/gracl_cap.c
new file mode 100644
index 0000000..1a94c11
--- /dev/null
+++ b/grsecurity/gracl_cap.c
@@ -0,0 +1,127 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/gracl.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+extern const char *captab_log[];
+extern int captab_log_entries;
+
+int gr_learn_cap(const struct task_struct *task, const struct cred *cred, const int cap)
+{
+	struct acl_subject_label *curracl;
+
+	if (!gr_acl_is_enabled())
+		return 1;
+
+	curracl = task->acl;
+
+	if (curracl->mode & (GR_LEARN | GR_INHERITLEARN)) {
+		security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename,
+			       task->role->roletype, GR_GLOBAL_UID(cred->uid),
+			       GR_GLOBAL_GID(cred->gid), task->exec_file ?
+			       gr_to_filename(task->exec_file->f_path.dentry,
+			       task->exec_file->f_path.mnt) : curracl->filename,
+			       curracl->filename, 0UL,
+			       0UL, "", (unsigned long) cap, &task->signal->saved_ip);
+		return 1;
+	}
+
+	return 0;
+}
+
+int gr_task_acl_is_capable(const struct task_struct *task, const struct cred *cred, const int cap)
+{
+	struct acl_subject_label *curracl;
+	kernel_cap_t cap_drop = __cap_empty_set, cap_mask = __cap_empty_set;
+	kernel_cap_t cap_audit = __cap_empty_set;
+
+	if (!gr_acl_is_enabled())
+		return 1;
+
+	curracl = task->acl;
+
+	cap_drop = curracl->cap_lower;
+	cap_mask = curracl->cap_mask;
+	cap_audit = curracl->cap_invert_audit;
+
+	while ((curracl = curracl->parent_subject)) {
+		/* if the cap isn't specified in the current computed mask but is specified in the
+		   current level subject, and is lowered in the current level subject, then add
+		   it to the set of dropped capabilities
+		   otherwise, add the current level subject's mask to the current computed mask
+		 */
+		if (!cap_raised(cap_mask, cap) && cap_raised(curracl->cap_mask, cap)) {
+			cap_raise(cap_mask, cap);
+			if (cap_raised(curracl->cap_lower, cap))
+				cap_raise(cap_drop, cap);
+			if (cap_raised(curracl->cap_invert_audit, cap))
+				cap_raise(cap_audit, cap);
+		}
+	}
+
+	if (!cap_raised(cap_drop, cap)) {
+		if (cap_raised(cap_audit, cap))
+			gr_log_cap(GR_DO_AUDIT, GR_CAP_ACL_MSG2, task, captab_log[cap]);
+		return 1;
+	}
+
+	/* only learn the capability use if the process has the capability in the
+	   general case, the two uses in sys.c of gr_learn_cap are an exception
+	   to this rule to ensure any role transition involves what the full-learned
+	   policy believes in a privileged process
+	*/
+	if (cap_raised(cred->cap_effective, cap) && gr_learn_cap(task, cred, cap))
+		return 1;
+
+	if ((cap >= 0) && (cap < captab_log_entries) && cap_raised(cred->cap_effective, cap) && !cap_raised(cap_audit, cap))
+		gr_log_cap(GR_DONT_AUDIT, GR_CAP_ACL_MSG, task, captab_log[cap]);
+
+	return 0;
+}
+
+int
+gr_acl_is_capable(const int cap)
+{
+	return gr_task_acl_is_capable(current, current_cred(), cap);
+}
+
+int gr_task_acl_is_capable_nolog(const struct task_struct *task, const int cap)
+{
+	struct acl_subject_label *curracl;
+	kernel_cap_t cap_drop = __cap_empty_set, cap_mask = __cap_empty_set;
+
+	if (!gr_acl_is_enabled())
+		return 1;
+
+	curracl = task->acl;
+
+	cap_drop = curracl->cap_lower;
+	cap_mask = curracl->cap_mask;
+
+	while ((curracl = curracl->parent_subject)) {
+		/* if the cap isn't specified in the current computed mask but is specified in the
+		   current level subject, and is lowered in the current level subject, then add
+		   it to the set of dropped capabilities
+		   otherwise, add the current level subject's mask to the current computed mask
+		 */
+		if (!cap_raised(cap_mask, cap) && cap_raised(curracl->cap_mask, cap)) {
+			cap_raise(cap_mask, cap);
+			if (cap_raised(curracl->cap_lower, cap))
+				cap_raise(cap_drop, cap);
+		}
+	}
+
+	if (!cap_raised(cap_drop, cap))
+		return 1;
+
+	return 0;
+}
+
+int
+gr_acl_is_capable_nolog(const int cap)
+{
+	return gr_task_acl_is_capable_nolog(current, cap);
+}
+
diff --git a/grsecurity/gracl_compat.c b/grsecurity/gracl_compat.c
new file mode 100644
index 0000000..ca25605
--- /dev/null
+++ b/grsecurity/gracl_compat.c
@@ -0,0 +1,270 @@
+#include <linux/kernel.h>
+#include <linux/gracl.h>
+#include <linux/compat.h>
+#include <linux/gracl_compat.h>
+
+#include <asm/uaccess.h>
+
+int copy_gr_arg_wrapper_compat(const char *buf, struct gr_arg_wrapper *uwrap)
+{
+	struct gr_arg_wrapper_compat uwrapcompat;
+
+        if (copy_from_user(&uwrapcompat, buf, sizeof(uwrapcompat)))
+                return -EFAULT;
+
+        if (((uwrapcompat.version != GRSECURITY_VERSION) &&
+	     (uwrapcompat.version != 0x2901)) ||
+	    (uwrapcompat.size != sizeof(struct gr_arg_compat)))  
+                return -EINVAL;
+
+	uwrap->arg = compat_ptr(uwrapcompat.arg);
+	uwrap->version = uwrapcompat.version;
+	uwrap->size = sizeof(struct gr_arg);
+
+        return 0;
+}
+
+int copy_gr_arg_compat(const struct gr_arg __user *buf, struct gr_arg *arg)
+{
+	struct gr_arg_compat argcompat;
+
+        if (copy_from_user(&argcompat, buf, sizeof(argcompat)))
+                return -EFAULT;
+
+	arg->role_db.r_table = compat_ptr(argcompat.role_db.r_table);
+	arg->role_db.num_pointers = argcompat.role_db.num_pointers;
+	arg->role_db.num_roles = argcompat.role_db.num_roles;
+	arg->role_db.num_domain_children = argcompat.role_db.num_domain_children;
+	arg->role_db.num_subjects = argcompat.role_db.num_subjects;
+	arg->role_db.num_objects = argcompat.role_db.num_objects;
+
+	memcpy(&arg->pw, &argcompat.pw, sizeof(arg->pw));
+	memcpy(&arg->salt, &argcompat.salt, sizeof(arg->salt));
+	memcpy(&arg->sum, &argcompat.sum, sizeof(arg->sum));
+	memcpy(&arg->sp_role, &argcompat.sp_role, sizeof(arg->sp_role));
+	arg->sprole_pws = compat_ptr(argcompat.sprole_pws);
+	arg->segv_device = argcompat.segv_device;
+	arg->segv_inode = argcompat.segv_inode;
+	arg->segv_uid = argcompat.segv_uid;
+	arg->num_sprole_pws = argcompat.num_sprole_pws;
+	arg->mode = argcompat.mode;
+
+	return 0;
+}
+
+int copy_acl_object_label_compat(struct acl_object_label *obj, const struct acl_object_label *userp)
+{
+	struct acl_object_label_compat objcompat;
+
+	if (copy_from_user(&objcompat, userp, sizeof(objcompat)))
+                return -EFAULT;
+
+	obj->filename = compat_ptr(objcompat.filename);
+	obj->inode = objcompat.inode;
+	obj->device = objcompat.device;
+	obj->mode = objcompat.mode;
+
+	obj->nested = compat_ptr(objcompat.nested);
+	obj->globbed = compat_ptr(objcompat.globbed);
+
+	obj->prev = compat_ptr(objcompat.prev);
+	obj->next = compat_ptr(objcompat.next);
+
+	return 0;
+}
+
+int copy_acl_subject_label_compat(struct acl_subject_label *subj, const struct acl_subject_label *userp)
+{
+	unsigned int i;
+	struct acl_subject_label_compat subjcompat;
+
+	if (copy_from_user(&subjcompat, userp, sizeof(subjcompat)))
+                return -EFAULT;
+
+	subj->filename = compat_ptr(subjcompat.filename);
+	subj->inode = subjcompat.inode;
+	subj->device = subjcompat.device;
+	subj->mode = subjcompat.mode;
+	subj->cap_mask = subjcompat.cap_mask;
+	subj->cap_lower = subjcompat.cap_lower;
+	subj->cap_invert_audit = subjcompat.cap_invert_audit;
+
+	for (i = 0; i < GR_NLIMITS; i++) {
+		if (subjcompat.res[i].rlim_cur == COMPAT_RLIM_INFINITY)
+			subj->res[i].rlim_cur = RLIM_INFINITY;
+		else
+			subj->res[i].rlim_cur = subjcompat.res[i].rlim_cur;
+		if (subjcompat.res[i].rlim_max == COMPAT_RLIM_INFINITY)
+			subj->res[i].rlim_max = RLIM_INFINITY;
+		else
+			subj->res[i].rlim_max = subjcompat.res[i].rlim_max;
+	}
+	subj->resmask = subjcompat.resmask;
+
+	subj->user_trans_type = subjcompat.user_trans_type;
+	subj->group_trans_type = subjcompat.group_trans_type;
+	subj->user_transitions = compat_ptr(subjcompat.user_transitions);
+	subj->group_transitions = compat_ptr(subjcompat.group_transitions);
+	subj->user_trans_num = subjcompat.user_trans_num;
+	subj->group_trans_num = subjcompat.group_trans_num;
+
+	memcpy(&subj->sock_families, &subjcompat.sock_families, sizeof(subj->sock_families));
+	memcpy(&subj->ip_proto, &subjcompat.ip_proto, sizeof(subj->ip_proto));
+	subj->ip_type = subjcompat.ip_type;
+	subj->ips = compat_ptr(subjcompat.ips);
+	subj->ip_num = subjcompat.ip_num;
+	subj->inaddr_any_override = subjcompat.inaddr_any_override;
+
+	subj->crashes = subjcompat.crashes;
+	subj->expires = subjcompat.expires;
+
+	subj->parent_subject = compat_ptr(subjcompat.parent_subject);
+	subj->hash = compat_ptr(subjcompat.hash);
+	subj->prev = compat_ptr(subjcompat.prev);
+	subj->next = compat_ptr(subjcompat.next);
+
+	subj->obj_hash = compat_ptr(subjcompat.obj_hash);
+	subj->obj_hash_size = subjcompat.obj_hash_size;
+	subj->pax_flags = subjcompat.pax_flags;
+
+	return 0;
+}
+
+int copy_acl_role_label_compat(struct acl_role_label *role, const struct acl_role_label *userp)
+{
+	struct acl_role_label_compat rolecompat;
+
+	if (copy_from_user(&rolecompat, userp, sizeof(rolecompat)))
+                return -EFAULT;
+
+	role->rolename = compat_ptr(rolecompat.rolename);
+	role->uidgid = rolecompat.uidgid;
+	role->roletype = rolecompat.roletype;
+
+	role->auth_attempts = rolecompat.auth_attempts;
+	role->expires = rolecompat.expires;
+
+	role->root_label = compat_ptr(rolecompat.root_label);
+	role->hash = compat_ptr(rolecompat.hash);
+
+	role->prev = compat_ptr(rolecompat.prev);
+	role->next = compat_ptr(rolecompat.next);
+
+	role->transitions = compat_ptr(rolecompat.transitions);
+	role->allowed_ips = compat_ptr(rolecompat.allowed_ips);
+	role->domain_children = compat_ptr(rolecompat.domain_children);
+	role->domain_child_num = rolecompat.domain_child_num;
+
+	role->umask = rolecompat.umask;
+
+	role->subj_hash = compat_ptr(rolecompat.subj_hash);
+	role->subj_hash_size = rolecompat.subj_hash_size;
+
+	return 0;
+}
+
+int copy_role_allowed_ip_compat(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp)
+{
+	struct role_allowed_ip_compat roleip_compat;
+
+	if (copy_from_user(&roleip_compat, userp, sizeof(roleip_compat)))
+                return -EFAULT;
+
+	roleip->addr = roleip_compat.addr;
+	roleip->netmask = roleip_compat.netmask;
+
+	roleip->prev = compat_ptr(roleip_compat.prev);
+	roleip->next = compat_ptr(roleip_compat.next);
+
+	return 0;
+}
+
+int copy_role_transition_compat(struct role_transition *trans, const struct role_transition *userp)
+{
+	struct role_transition_compat trans_compat;
+
+	if (copy_from_user(&trans_compat, userp, sizeof(trans_compat)))
+                return -EFAULT;
+
+	trans->rolename = compat_ptr(trans_compat.rolename);
+
+	trans->prev = compat_ptr(trans_compat.prev);
+	trans->next = compat_ptr(trans_compat.next);
+
+	return 0;
+
+}
+
+int copy_gr_hash_struct_compat(struct gr_hash_struct *hash, const struct gr_hash_struct *userp)
+{
+	struct gr_hash_struct_compat hash_compat;
+
+	if (copy_from_user(&hash_compat, userp, sizeof(hash_compat)))
+                return -EFAULT;
+
+	hash->table = compat_ptr(hash_compat.table);
+	hash->nametable = compat_ptr(hash_compat.nametable);
+	hash->first = compat_ptr(hash_compat.first);
+
+	hash->table_size = hash_compat.table_size;
+	hash->used_size = hash_compat.used_size;
+
+	hash->type = hash_compat.type;
+
+	return 0;
+}
+
+int copy_pointer_from_array_compat(void *ptr, unsigned long idx, const void *userp)
+{
+	compat_uptr_t ptrcompat;
+
+	if (copy_from_user(&ptrcompat, userp + (idx * sizeof(ptrcompat)), sizeof(ptrcompat)))
+                return -EFAULT;
+
+	*(void **)ptr = compat_ptr(ptrcompat);
+
+	return 0;
+}
+
+int copy_acl_ip_label_compat(struct acl_ip_label *ip, const struct acl_ip_label *userp)
+{
+	struct acl_ip_label_compat ip_compat;
+
+	if (copy_from_user(&ip_compat, userp, sizeof(ip_compat)))
+                return -EFAULT;
+
+	ip->iface = compat_ptr(ip_compat.iface);
+	ip->addr = ip_compat.addr;
+	ip->netmask = ip_compat.netmask;
+	ip->low = ip_compat.low;
+	ip->high = ip_compat.high;
+	ip->mode = ip_compat.mode;
+	ip->type = ip_compat.type;
+
+	memcpy(&ip->proto, &ip_compat.proto, sizeof(ip->proto));
+
+	ip->prev = compat_ptr(ip_compat.prev);
+	ip->next = compat_ptr(ip_compat.next);
+
+	return 0;
+}
+
+int copy_sprole_pw_compat(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp)
+{
+	struct sprole_pw_compat pw_compat;
+
+	if (copy_from_user(&pw_compat, (const void *)userp + (sizeof(pw_compat) * idx), sizeof(pw_compat)))
+                return -EFAULT;
+
+	pw->rolename = compat_ptr(pw_compat.rolename);
+	memcpy(&pw->salt, pw_compat.salt, sizeof(pw->salt));
+	memcpy(&pw->sum, pw_compat.sum, sizeof(pw->sum));
+
+	return 0;
+}
+
+size_t get_gr_arg_wrapper_size_compat(void)
+{
+	return sizeof(struct gr_arg_wrapper_compat);
+}
+
diff --git a/grsecurity/gracl_fs.c b/grsecurity/gracl_fs.c
new file mode 100644
index 0000000..4008fdc
--- /dev/null
+++ b/grsecurity/gracl_fs.c
@@ -0,0 +1,445 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/stat.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+#include <linux/gracl.h>
+
+umode_t
+gr_acl_umask(void)
+{
+	if (unlikely(!gr_acl_is_enabled()))
+		return 0;
+
+	return current->role->umask;
+}
+
+__u32
+gr_acl_handle_hidden_file(const struct dentry * dentry,
+			  const struct vfsmount * mnt)
+{
+	__u32 mode;
+
+	if (unlikely(d_is_negative(dentry)))
+		return GR_FIND;
+
+	mode =
+	    gr_search_file(dentry, GR_FIND | GR_AUDIT_FIND | GR_SUPPRESS, mnt);
+
+	if (unlikely(mode & GR_FIND && mode & GR_AUDIT_FIND)) {
+		gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_HIDDEN_ACL_MSG, dentry, mnt);
+		return mode;
+	} else if (unlikely(!(mode & GR_FIND) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_HIDDEN_ACL_MSG, dentry, mnt);
+		return 0;
+	} else if (unlikely(!(mode & GR_FIND)))
+		return 0;
+
+	return GR_FIND;
+}
+
+__u32
+gr_acl_handle_open(const struct dentry * dentry, const struct vfsmount * mnt,
+		   int acc_mode)
+{
+	__u32 reqmode = GR_FIND;
+	__u32 mode;
+
+	if (unlikely(d_is_negative(dentry)))
+		return reqmode;
+
+	if (acc_mode & MAY_APPEND)
+		reqmode |= GR_APPEND;
+	else if (acc_mode & MAY_WRITE)
+		reqmode |= GR_WRITE;
+	if ((acc_mode & MAY_READ) && !S_ISDIR(dentry->d_inode->i_mode))
+		reqmode |= GR_READ;
+
+	mode =
+	    gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS,
+			   mnt);
+
+	if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) {
+		gr_log_fs_rbac_mode2(GR_DO_AUDIT, GR_OPEN_ACL_MSG, dentry, mnt,
+			       reqmode & GR_READ ? " reading" : "",
+			       reqmode & GR_WRITE ? " writing" : reqmode &
+			       GR_APPEND ? " appending" : "");
+		return reqmode;
+	} else
+	    if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS)))
+	{
+		gr_log_fs_rbac_mode2(GR_DONT_AUDIT, GR_OPEN_ACL_MSG, dentry, mnt,
+			       reqmode & GR_READ ? " reading" : "",
+			       reqmode & GR_WRITE ? " writing" : reqmode &
+			       GR_APPEND ? " appending" : "");
+		return 0;
+	} else if (unlikely((mode & reqmode) != reqmode))
+		return 0;
+
+	return reqmode;
+}
+
+__u32
+gr_acl_handle_creat(const struct dentry * dentry,
+		    const struct dentry * p_dentry,
+		    const struct vfsmount * p_mnt, int open_flags, int acc_mode,
+		    const int imode)
+{
+	__u32 reqmode = GR_WRITE | GR_CREATE;
+	__u32 mode;
+
+	if (acc_mode & MAY_APPEND)
+		reqmode |= GR_APPEND;
+	// if a directory was required or the directory already exists, then
+	// don't count this open as a read
+	if ((acc_mode & MAY_READ) &&
+	    !((open_flags & O_DIRECTORY) || (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode))))
+		reqmode |= GR_READ;
+	if ((open_flags & O_CREAT) &&
+	    ((imode & S_ISUID) || ((imode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))))
+		reqmode |= GR_SETID;
+
+	mode =
+	    gr_check_create(dentry, p_dentry, p_mnt,
+			    reqmode | to_gr_audit(reqmode) | GR_SUPPRESS);
+
+	if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) {
+		gr_log_fs_rbac_mode2(GR_DO_AUDIT, GR_CREATE_ACL_MSG, dentry, p_mnt,
+			       reqmode & GR_READ ? " reading" : "",
+			       reqmode & GR_WRITE ? " writing" : reqmode &
+			       GR_APPEND ? " appending" : "");
+		return reqmode;
+	} else
+	    if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS)))
+	{
+		gr_log_fs_rbac_mode2(GR_DONT_AUDIT, GR_CREATE_ACL_MSG, dentry, p_mnt,
+			       reqmode & GR_READ ? " reading" : "",
+			       reqmode & GR_WRITE ? " writing" : reqmode &
+			       GR_APPEND ? " appending" : "");
+		return 0;
+	} else if (unlikely((mode & reqmode) != reqmode))
+		return 0;
+
+	return reqmode;
+}
+
+__u32
+gr_acl_handle_access(const struct dentry * dentry, const struct vfsmount * mnt,
+		     const int fmode)
+{
+	__u32 mode, reqmode = GR_FIND;
+
+	if ((fmode & S_IXOTH) && !S_ISDIR(dentry->d_inode->i_mode))
+		reqmode |= GR_EXEC;
+	if (fmode & S_IWOTH)
+		reqmode |= GR_WRITE;
+	if (fmode & S_IROTH)
+		reqmode |= GR_READ;
+
+	mode =
+	    gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS,
+			   mnt);
+
+	if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) {
+		gr_log_fs_rbac_mode3(GR_DO_AUDIT, GR_ACCESS_ACL_MSG, dentry, mnt,
+			       reqmode & GR_READ ? " reading" : "",
+			       reqmode & GR_WRITE ? " writing" : "",
+			       reqmode & GR_EXEC ? " executing" : "");
+		return reqmode;
+	} else
+	    if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS)))
+	{
+		gr_log_fs_rbac_mode3(GR_DONT_AUDIT, GR_ACCESS_ACL_MSG, dentry, mnt,
+			       reqmode & GR_READ ? " reading" : "",
+			       reqmode & GR_WRITE ? " writing" : "",
+			       reqmode & GR_EXEC ? " executing" : "");
+		return 0;
+	} else if (unlikely((mode & reqmode) != reqmode))
+		return 0;
+
+	return reqmode;
+}
+
+static __u32 generic_fs_handler(const struct dentry *dentry, const struct vfsmount *mnt, __u32 reqmode, const char *fmt)
+{
+	__u32 mode;
+
+	mode = gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS, mnt);
+
+	if (unlikely(((mode & (reqmode)) == (reqmode)) && mode & GR_AUDITS)) {
+		gr_log_fs_rbac_generic(GR_DO_AUDIT, fmt, dentry, mnt);
+		return mode;
+	} else if (unlikely((mode & (reqmode)) != (reqmode) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_rbac_generic(GR_DONT_AUDIT, fmt, dentry, mnt);
+		return 0;
+	} else if (unlikely((mode & (reqmode)) != (reqmode)))
+		return 0;
+
+	return (reqmode);
+}
+
+__u32
+gr_acl_handle_rmdir(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE | GR_DELETE , GR_RMDIR_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_unlink(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE | GR_DELETE , GR_UNLINK_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_truncate(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE, GR_TRUNCATE_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_utime(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE, GR_ATIME_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_chmod(const struct dentry *dentry, const struct vfsmount *mnt,
+		     umode_t *modeptr)
+{
+	umode_t mode;
+
+	*modeptr &= ~gr_acl_umask();
+	mode = *modeptr;
+
+	if (unlikely(dentry->d_inode && S_ISSOCK(dentry->d_inode->i_mode)))
+		return 1;
+
+	if (unlikely(dentry->d_inode && !S_ISDIR(dentry->d_inode->i_mode) &&
+		     ((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))))) {
+		return generic_fs_handler(dentry, mnt, GR_WRITE | GR_SETID,
+				   GR_CHMOD_ACL_MSG);
+	} else {
+		return generic_fs_handler(dentry, mnt, GR_WRITE, GR_CHMOD_ACL_MSG);
+	}
+}
+
+__u32
+gr_acl_handle_chown(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE, GR_CHOWN_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_setxattr(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE, GR_SETXATTR_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_removexattr(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_WRITE, GR_REMOVEXATTR_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_execve(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_EXEC, GR_EXEC_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_unix(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return generic_fs_handler(dentry, mnt, GR_READ | GR_WRITE,
+			   GR_UNIXCONNECT_ACL_MSG);
+}
+
+/* hardlinks require at minimum create and link permission,
+   any additional privilege required is based on the
+   privilege of the file being linked to
+*/
+__u32
+gr_acl_handle_link(const struct dentry * new_dentry,
+		   const struct dentry * parent_dentry,
+		   const struct vfsmount * parent_mnt,
+		   const struct dentry * old_dentry,
+		   const struct vfsmount * old_mnt, const struct filename *to)
+{
+	__u32 mode;
+	__u32 needmode = GR_CREATE | GR_LINK;
+	__u32 needaudit = GR_AUDIT_CREATE | GR_AUDIT_LINK;
+
+	mode =
+	    gr_check_link(new_dentry, parent_dentry, parent_mnt, old_dentry,
+			  old_mnt);
+
+	if (unlikely(((mode & needmode) == needmode) && (mode & needaudit))) {
+		gr_log_fs_rbac_str(GR_DO_AUDIT, GR_LINK_ACL_MSG, old_dentry, old_mnt, to->name);
+		return mode;
+	} else if (unlikely(((mode & needmode) != needmode) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_rbac_str(GR_DONT_AUDIT, GR_LINK_ACL_MSG, old_dentry, old_mnt, to->name);
+		return 0;
+	} else if (unlikely((mode & needmode) != needmode))
+		return 0;
+
+	return 1;
+}
+
+__u32
+gr_acl_handle_symlink(const struct dentry * new_dentry,
+		      const struct dentry * parent_dentry,
+		      const struct vfsmount * parent_mnt, const struct filename *from)
+{
+	__u32 needmode = GR_WRITE | GR_CREATE;
+	__u32 mode;
+
+	mode =
+	    gr_check_create(new_dentry, parent_dentry, parent_mnt,
+			    GR_CREATE | GR_AUDIT_CREATE |
+			    GR_WRITE | GR_AUDIT_WRITE | GR_SUPPRESS);
+
+	if (unlikely(mode & GR_WRITE && mode & GR_AUDITS)) {
+		gr_log_fs_str_rbac(GR_DO_AUDIT, GR_SYMLINK_ACL_MSG, from->name, new_dentry, parent_mnt);
+		return mode;
+	} else if (unlikely(((mode & needmode) != needmode) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_str_rbac(GR_DONT_AUDIT, GR_SYMLINK_ACL_MSG, from->name, new_dentry, parent_mnt);
+		return 0;
+	} else if (unlikely((mode & needmode) != needmode))
+		return 0;
+
+	return (GR_WRITE | GR_CREATE);
+}
+
+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)
+{
+	__u32 mode;
+
+	mode = gr_check_create(new_dentry, parent_dentry, parent_mnt, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS);
+
+	if (unlikely(((mode & (reqmode)) == (reqmode)) && mode & GR_AUDITS)) {
+		gr_log_fs_rbac_generic(GR_DO_AUDIT, fmt, new_dentry, parent_mnt);
+		return mode;
+	} else if (unlikely((mode & (reqmode)) != (reqmode) && !(mode & GR_SUPPRESS))) {
+		gr_log_fs_rbac_generic(GR_DONT_AUDIT, fmt, new_dentry, parent_mnt);
+		return 0;
+	} else if (unlikely((mode & (reqmode)) != (reqmode)))
+		return 0;
+
+	return (reqmode);
+}
+
+__u32
+gr_acl_handle_mknod(const struct dentry * new_dentry,
+		    const struct dentry * parent_dentry,
+		    const struct vfsmount * parent_mnt,
+		    const int mode)
+{
+	__u32 reqmode = GR_WRITE | GR_CREATE;
+	if (unlikely((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))))
+		reqmode |= GR_SETID;
+
+	return generic_fs_create_handler(new_dentry, parent_dentry, parent_mnt,
+				  reqmode, GR_MKNOD_ACL_MSG);
+}
+
+__u32
+gr_acl_handle_mkdir(const struct dentry *new_dentry,
+		    const struct dentry *parent_dentry,
+		    const struct vfsmount *parent_mnt)
+{
+	return generic_fs_create_handler(new_dentry, parent_dentry, parent_mnt,
+				  GR_WRITE | GR_CREATE, GR_MKDIR_ACL_MSG);
+}
+
+#define RENAME_CHECK_SUCCESS(old, new) \
+	(((old & (GR_WRITE | GR_READ)) == (GR_WRITE | GR_READ)) && \
+	 ((new & (GR_WRITE | GR_READ)) == (GR_WRITE | GR_READ)))
+
+int
+gr_acl_handle_rename(struct dentry *new_dentry,
+		     struct dentry *parent_dentry,
+		     const struct vfsmount *parent_mnt,
+		     struct dentry *old_dentry,
+		     struct inode *old_parent_inode,
+		     struct vfsmount *old_mnt, const struct filename *newname, unsigned int flags)
+{
+	__u32 comp1, comp2;
+	int error = 0;
+
+	if (unlikely(!gr_acl_is_enabled()))
+		return 0;
+
+	if (flags & RENAME_EXCHANGE) {
+		comp1 = gr_search_file(new_dentry, GR_READ | GR_WRITE |
+				       GR_AUDIT_READ | GR_AUDIT_WRITE |
+				       GR_SUPPRESS, parent_mnt);
+		comp2 =
+		    gr_search_file(old_dentry,
+				   GR_READ | GR_WRITE | GR_AUDIT_READ |
+				   GR_AUDIT_WRITE | GR_SUPPRESS, old_mnt);
+	} else if (d_is_negative(new_dentry)) {
+		comp1 = gr_check_create(new_dentry, parent_dentry, parent_mnt,
+					GR_READ | GR_WRITE | GR_CREATE | GR_AUDIT_READ |
+					GR_AUDIT_WRITE | GR_AUDIT_CREATE | GR_SUPPRESS);
+		comp2 = gr_search_file(old_dentry, GR_READ | GR_WRITE |
+				       GR_DELETE | GR_AUDIT_DELETE |
+				       GR_AUDIT_READ | GR_AUDIT_WRITE |
+				       GR_SUPPRESS, old_mnt);
+	} else {
+		comp1 = gr_search_file(new_dentry, GR_READ | GR_WRITE |
+				       GR_CREATE | GR_DELETE |
+				       GR_AUDIT_CREATE | GR_AUDIT_DELETE |
+				       GR_AUDIT_READ | GR_AUDIT_WRITE |
+				       GR_SUPPRESS, parent_mnt);
+		comp2 =
+		    gr_search_file(old_dentry,
+				   GR_READ | GR_WRITE | GR_AUDIT_READ |
+				   GR_DELETE | GR_AUDIT_DELETE |
+				   GR_AUDIT_WRITE | GR_SUPPRESS, old_mnt);
+	}
+
+	if (RENAME_CHECK_SUCCESS(comp1, comp2) &&
+	    ((comp1 & GR_AUDITS) || (comp2 & GR_AUDITS)))
+		gr_log_fs_rbac_str(GR_DO_AUDIT, GR_RENAME_ACL_MSG, old_dentry, old_mnt, newname->name);
+	else if (!RENAME_CHECK_SUCCESS(comp1, comp2) && !(comp1 & GR_SUPPRESS)
+		 && !(comp2 & GR_SUPPRESS)) {
+		gr_log_fs_rbac_str(GR_DONT_AUDIT, GR_RENAME_ACL_MSG, old_dentry, old_mnt, newname->name);
+		error = -EACCES;
+	} else if (unlikely(!RENAME_CHECK_SUCCESS(comp1, comp2)))
+		error = -EACCES;
+
+	return error;
+}
+
+void
+gr_acl_handle_exit(void)
+{
+	u16 id;
+	char *rolename;
+
+	if (unlikely(current->acl_sp_role && gr_acl_is_enabled() &&
+	    !(current->role->roletype & GR_ROLE_PERSIST))) {
+		id = current->acl_role_id;
+		rolename = current->role->rolename;
+		gr_set_acls(1);
+		gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_SPROLEL_ACL_MSG, rolename, id);
+	}
+
+	gr_put_exec_file(current);
+	return;
+}
+
+int
+gr_acl_handle_procpidmem(const struct task_struct *task)
+{
+	if (unlikely(!gr_acl_is_enabled()))
+		return 0;
+
+	if (task != current && task->acl->mode & GR_PROTPROCFD)
+		return -EACCES;
+
+	return 0;
+}
diff --git a/grsecurity/gracl_ip.c b/grsecurity/gracl_ip.c
new file mode 100644
index 0000000..f056b81
--- /dev/null
+++ b/grsecurity/gracl_ip.c
@@ -0,0 +1,386 @@
+#include <linux/kernel.h>
+#include <asm/uaccess.h>
+#include <asm/errno.h>
+#include <net/sock.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/net.h>
+#include <linux/in.h>
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <linux/udp.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/gracl.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+#define GR_BIND			0x01
+#define GR_CONNECT		0x02
+#define GR_INVERT		0x04
+#define GR_BINDOVERRIDE		0x08
+#define GR_CONNECTOVERRIDE	0x10
+#define GR_SOCK_FAMILY		0x20
+
+static const char * gr_protocols[IPPROTO_MAX] = {
+	"ip", "icmp", "igmp", "ggp", "ipencap", "st", "tcp", "cbt",
+	"egp", "igp", "bbn-rcc", "nvp", "pup", "argus", "emcon", "xnet",
+	"chaos", "udp", "mux", "dcn", "hmp", "prm", "xns-idp", "trunk-1",
+	"trunk-2", "leaf-1", "leaf-2", "rdp", "irtp", "iso-tp4", "netblt", "mfe-nsp",
+	"merit-inp", "sep", "3pc", "idpr", "xtp", "ddp", "idpr-cmtp", "tp++",
+	"il", "ipv6", "sdrp", "ipv6-route", "ipv6-frag", "idrp", "rsvp", "gre",
+	"mhrp", "bna", "ipv6-crypt", "ipv6-auth", "i-nlsp", "swipe", "narp", "mobile",
+	"tlsp", "skip", "ipv6-icmp", "ipv6-nonxt", "ipv6-opts", "unknown:61", "cftp", "unknown:63",
+	"sat-expak", "kryptolan", "rvd", "ippc", "unknown:68", "sat-mon", "visa", "ipcv",
+	"cpnx", "cphb", "wsn", "pvp", "br-sat-mon", "sun-nd", "wb-mon", "wb-expak", 
+	"iso-ip", "vmtp", "secure-vmtp", "vines", "ttp", "nfsnet-igp", "dgp", "tcf", 
+	"eigrp", "ospf", "sprite-rpc", "larp", "mtp", "ax.25", "ipip", "micp",
+	"scc-sp", "etherip", "encap", "unknown:99", "gmtp", "ifmp", "pnni", "pim",
+	"aris", "scps", "qnx", "a/n", "ipcomp", "snp", "compaq-peer", "ipx-in-ip",
+	"vrrp", "pgm", "unknown:114", "l2tp", "ddx", "iatp", "stp", "srp",
+	"uti", "smp", "sm", "ptp", "isis", "fire", "crtp", "crdup",
+	"sscopmce", "iplt", "sps", "pipe", "sctp", "fc", "unkown:134", "unknown:135",
+	"unknown:136", "unknown:137", "unknown:138", "unknown:139", "unknown:140", "unknown:141", "unknown:142", "unknown:143",
+	"unknown:144", "unknown:145", "unknown:146", "unknown:147", "unknown:148", "unknown:149", "unknown:150", "unknown:151",
+	"unknown:152", "unknown:153", "unknown:154", "unknown:155", "unknown:156", "unknown:157", "unknown:158", "unknown:159",
+	"unknown:160", "unknown:161", "unknown:162", "unknown:163", "unknown:164", "unknown:165", "unknown:166", "unknown:167",
+	"unknown:168", "unknown:169", "unknown:170", "unknown:171", "unknown:172", "unknown:173", "unknown:174", "unknown:175",
+	"unknown:176", "unknown:177", "unknown:178", "unknown:179", "unknown:180", "unknown:181", "unknown:182", "unknown:183",
+	"unknown:184", "unknown:185", "unknown:186", "unknown:187", "unknown:188", "unknown:189", "unknown:190", "unknown:191",
+	"unknown:192", "unknown:193", "unknown:194", "unknown:195", "unknown:196", "unknown:197", "unknown:198", "unknown:199",
+	"unknown:200", "unknown:201", "unknown:202", "unknown:203", "unknown:204", "unknown:205", "unknown:206", "unknown:207",
+	"unknown:208", "unknown:209", "unknown:210", "unknown:211", "unknown:212", "unknown:213", "unknown:214", "unknown:215",
+	"unknown:216", "unknown:217", "unknown:218", "unknown:219", "unknown:220", "unknown:221", "unknown:222", "unknown:223",
+	"unknown:224", "unknown:225", "unknown:226", "unknown:227", "unknown:228", "unknown:229", "unknown:230", "unknown:231",
+	"unknown:232", "unknown:233", "unknown:234", "unknown:235", "unknown:236", "unknown:237", "unknown:238", "unknown:239",
+	"unknown:240", "unknown:241", "unknown:242", "unknown:243", "unknown:244", "unknown:245", "unknown:246", "unknown:247",
+	"unknown:248", "unknown:249", "unknown:250", "unknown:251", "unknown:252", "unknown:253", "unknown:254", "unknown:255",
+	};
+
+static const char * gr_socktypes[SOCK_MAX] = {
+	"unknown:0", "stream", "dgram", "raw", "rdm", "seqpacket", "unknown:6", 
+	"unknown:7", "unknown:8", "unknown:9", "packet"
+	};
+
+static const char * gr_sockfamilies[AF_MAX+1] = {
+	"unspec", "unix", "inet", "ax25", "ipx", "appletalk", "netrom", "bridge", "atmpvc", "x25",
+	"inet6", "rose", "decnet", "netbeui", "security", "key", "netlink", "packet", "ash",
+	"econet", "atmsvc", "rds", "sna", "irda", "ppox", "wanpipe", "llc", "fam_27", "fam_28",
+	"tipc", "bluetooth", "iucv", "rxrpc", "isdn", "phonet", "ieee802154", "ciaf"
+	};
+
+const char *
+gr_proto_to_name(unsigned char proto)
+{
+	return gr_protocols[proto];
+}
+
+const char *
+gr_socktype_to_name(unsigned char type)
+{
+	return gr_socktypes[type];
+}
+
+const char *
+gr_sockfamily_to_name(unsigned char family)
+{
+	return gr_sockfamilies[family];
+}
+
+extern const struct net_proto_family __rcu *net_families[NPROTO] __read_mostly;
+
+int
+gr_search_socket(const int domain, const int type, const int protocol)
+{
+	struct acl_subject_label *curr;
+	const struct cred *cred = current_cred();
+
+	if (unlikely(!gr_acl_is_enabled()))
+		goto exit;
+
+	if ((domain < 0) || (type < 0) || (protocol < 0) ||
+	    (domain >= AF_MAX) || (type >= SOCK_MAX) || (protocol >= IPPROTO_MAX))
+		goto exit;	// let the kernel handle it
+
+	curr = current->acl;
+
+	if (curr->sock_families[domain / 32] & (1U << (domain % 32))) {
+		/* the family is allowed, if this is PF_INET allow it only if
+		   the extra sock type/protocol checks pass */
+		if (domain == PF_INET)
+			goto inet_check;
+		goto exit;
+	} else {
+		if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) {
+			__u32 fakeip = 0;
+			security_learn(GR_IP_LEARN_MSG, current->role->rolename,
+				       current->role->roletype, GR_GLOBAL_UID(cred->uid),
+				       GR_GLOBAL_GID(cred->gid), current->exec_file ?
+				       gr_to_filename(current->exec_file->f_path.dentry,
+				       current->exec_file->f_path.mnt) :
+				       curr->filename, curr->filename,
+				       &fakeip, domain, 0, 0, GR_SOCK_FAMILY,
+				       &current->signal->saved_ip);
+			goto exit;
+		}
+		goto exit_fail;
+	}
+
+inet_check:
+	/* the rest of this checking is for IPv4 only */
+	if (!curr->ips)
+		goto exit;
+
+	if ((curr->ip_type & (1U << type)) &&
+	    (curr->ip_proto[protocol / 32] & (1U << (protocol % 32))))
+		goto exit;
+
+	if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) {
+		/* we don't place acls on raw sockets , and sometimes
+		   dgram/ip sockets are opened for ioctl and not
+		   bind/connect, so we'll fake a bind learn log */
+		if (type == SOCK_RAW || type == SOCK_PACKET) {
+			__u32 fakeip = 0;
+			security_learn(GR_IP_LEARN_MSG, current->role->rolename,
+				       current->role->roletype, GR_GLOBAL_UID(cred->uid),
+				       GR_GLOBAL_GID(cred->gid), current->exec_file ?
+				       gr_to_filename(current->exec_file->f_path.dentry,
+				       current->exec_file->f_path.mnt) :
+				       curr->filename, curr->filename,
+				       &fakeip, 0, type,
+				       protocol, GR_CONNECT, &current->signal->saved_ip);
+		} else if ((type == SOCK_DGRAM) && (protocol == IPPROTO_IP)) {
+			__u32 fakeip = 0;
+			security_learn(GR_IP_LEARN_MSG, current->role->rolename,
+				       current->role->roletype, GR_GLOBAL_UID(cred->uid),
+				       GR_GLOBAL_GID(cred->gid), current->exec_file ?
+				       gr_to_filename(current->exec_file->f_path.dentry,
+				       current->exec_file->f_path.mnt) :
+				       curr->filename, curr->filename,
+				       &fakeip, 0, type,
+				       protocol, GR_BIND, &current->signal->saved_ip);
+		}
+		/* we'll log when they use connect or bind */
+		goto exit;
+	}
+
+exit_fail:
+	if (domain == PF_INET)
+		gr_log_str3(GR_DONT_AUDIT, GR_SOCK_MSG, gr_sockfamily_to_name(domain), 
+			    gr_socktype_to_name(type), gr_proto_to_name(protocol));
+	else if (rcu_access_pointer(net_families[domain]) != NULL)
+		gr_log_str2_int(GR_DONT_AUDIT, GR_SOCK_NOINET_MSG, gr_sockfamily_to_name(domain), 
+			    gr_socktype_to_name(type), protocol);
+
+	return 0;
+exit:
+	return 1;
+}
+
+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)
+{
+	if ((ip->mode & mode) &&
+	    (ip_port >= ip->low) &&
+	    (ip_port <= ip->high) &&
+	    ((ntohl(ip_addr) & our_netmask) ==
+	     (ntohl(our_addr) & our_netmask))
+	    && (ip->proto[protocol / 32] & (1U << (protocol % 32)))
+	    && (ip->type & (1U << type))) {
+		if (ip->mode & GR_INVERT)
+			return 2; // specifically denied
+		else
+			return 1; // allowed
+	}
+
+	return 0; // not specifically allowed, may continue parsing
+}
+
+static int
+gr_search_connectbind(const int full_mode, struct sock *sk,
+		      struct sockaddr_in *addr, const int type)
+{
+	char iface[IFNAMSIZ] = {0};
+	struct acl_subject_label *curr;
+	struct acl_ip_label *ip;
+	struct inet_sock *isk;
+	struct net_device *dev;
+	struct in_device *idev;
+	unsigned long i;
+	int ret;
+	int mode = full_mode & (GR_BIND | GR_CONNECT);
+	__u32 ip_addr = 0;
+	__u32 our_addr;
+	__u32 our_netmask;
+	char *p;
+	__u16 ip_port = 0;
+	const struct cred *cred = current_cred();
+
+	if (unlikely(!gr_acl_is_enabled() || sk->sk_family != PF_INET))
+		return 0;
+
+	curr = current->acl;
+	isk = inet_sk(sk);
+
+	/* INADDR_ANY overriding for binds, inaddr_any_override is already in network order */
+	if ((full_mode & GR_BINDOVERRIDE) && addr->sin_addr.s_addr == htonl(INADDR_ANY) && curr->inaddr_any_override != 0)
+		addr->sin_addr.s_addr = curr->inaddr_any_override;
+	if ((full_mode & GR_CONNECT) && isk->inet_saddr == htonl(INADDR_ANY) && curr->inaddr_any_override != 0) {
+		struct sockaddr_in saddr;
+		int err;
+
+		saddr.sin_family = AF_INET;
+		saddr.sin_addr.s_addr = curr->inaddr_any_override;
+		saddr.sin_port = isk->inet_sport;
+
+		err = security_socket_bind(sk->sk_socket, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in));
+		if (err)
+			return err;
+
+		err = sk->sk_socket->ops->bind(sk->sk_socket, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in));
+		if (err)
+			return err;
+	}
+
+	if (!curr->ips)
+		return 0;
+
+	ip_addr = addr->sin_addr.s_addr;
+	ip_port = ntohs(addr->sin_port);
+
+	if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) {
+		security_learn(GR_IP_LEARN_MSG, current->role->rolename,
+			       current->role->roletype, GR_GLOBAL_UID(cred->uid),
+			       GR_GLOBAL_GID(cred->gid), current->exec_file ?
+			       gr_to_filename(current->exec_file->f_path.dentry,
+			       current->exec_file->f_path.mnt) :
+			       curr->filename, curr->filename,
+			       &ip_addr, ip_port, type,
+			       sk->sk_protocol, mode, &current->signal->saved_ip);
+		return 0;
+	}
+
+	for (i = 0; i < curr->ip_num; i++) {
+		ip = *(curr->ips + i);
+		if (ip->iface != NULL) {
+			strncpy(iface, ip->iface, IFNAMSIZ - 1);
+			p = strchr(iface, ':');
+			if (p != NULL)
+				*p = '\0';
+			dev = dev_get_by_name(sock_net(sk), iface);
+			if (dev == NULL)
+				continue;
+			idev = in_dev_get(dev);
+			if (idev == NULL) {
+				dev_put(dev);
+				continue;
+			}
+			rcu_read_lock();
+			for_ifa(idev) {
+				if (!strcmp(ip->iface, ifa->ifa_label)) {
+					our_addr = ifa->ifa_address;
+					our_netmask = 0xffffffff;
+					ret = check_ip_policy(ip, ip_addr, ip_port, sk->sk_protocol, mode, type, our_addr, our_netmask);
+					if (ret == 1) {
+						rcu_read_unlock();
+						in_dev_put(idev);
+						dev_put(dev);
+						return 0;
+					} else if (ret == 2) {
+						rcu_read_unlock();
+						in_dev_put(idev);
+						dev_put(dev);
+						goto denied;
+					}
+				}
+			} endfor_ifa(idev);
+			rcu_read_unlock();
+			in_dev_put(idev);
+			dev_put(dev);
+		} else {
+			our_addr = ip->addr;
+			our_netmask = ip->netmask;
+			ret = check_ip_policy(ip, ip_addr, ip_port, sk->sk_protocol, mode, type, our_addr, our_netmask);
+			if (ret == 1)
+				return 0;
+			else if (ret == 2)
+				goto denied;
+		}
+	}
+
+denied:
+	if (mode == GR_BIND)
+		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));
+	else if (mode == GR_CONNECT)
+		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));
+
+	return -EACCES;
+}
+
+int
+gr_search_connect(struct socket *sock, struct sockaddr_in *addr)
+{
+	/* always allow disconnection of dgram sockets with connect */
+	if (addr->sin_family == AF_UNSPEC)
+		return 0;
+	return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sock->sk, addr, sock->type);
+}
+
+int
+gr_search_bind(struct socket *sock, struct sockaddr_in *addr)
+{
+	return gr_search_connectbind(GR_BIND | GR_BINDOVERRIDE, sock->sk, addr, sock->type);
+}
+
+int gr_search_listen(struct socket *sock)
+{
+	struct sock *sk = sock->sk;
+	struct sockaddr_in addr;
+
+	addr.sin_addr.s_addr = inet_sk(sk)->inet_saddr;
+	addr.sin_port = inet_sk(sk)->inet_sport;
+
+	return gr_search_connectbind(GR_BIND | GR_CONNECTOVERRIDE, sock->sk, &addr, sock->type);
+}
+
+int gr_search_accept(struct socket *sock)
+{
+	struct sock *sk = sock->sk;
+	struct sockaddr_in addr;
+
+	addr.sin_addr.s_addr = inet_sk(sk)->inet_saddr;
+	addr.sin_port = inet_sk(sk)->inet_sport;
+
+	return gr_search_connectbind(GR_BIND | GR_CONNECTOVERRIDE, sock->sk, &addr, sock->type);
+}
+
+int
+gr_search_udp_sendmsg(struct sock *sk, struct sockaddr_in *addr)
+{
+	if (addr)
+		return gr_search_connectbind(GR_CONNECT, sk, addr, SOCK_DGRAM);
+	else {
+		struct sockaddr_in sin;
+		const struct inet_sock *inet = inet_sk(sk);
+
+		sin.sin_addr.s_addr = inet->inet_daddr;
+		sin.sin_port = inet->inet_dport;
+
+		return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sk, &sin, SOCK_DGRAM);
+	}
+}
+
+int
+gr_search_udp_recvmsg(struct sock *sk, const struct sk_buff *skb)
+{
+	struct sockaddr_in sin;
+
+	if (unlikely(skb->len < sizeof (struct udphdr)))
+		return 0;	// skip this packet
+
+	sin.sin_addr.s_addr = ip_hdr(skb)->saddr;
+	sin.sin_port = udp_hdr(skb)->source;
+
+	return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sk, &sin, SOCK_DGRAM);
+}
diff --git a/grsecurity/gracl_learn.c b/grsecurity/gracl_learn.c
new file mode 100644
index 0000000..25f54ef
--- /dev/null
+++ b/grsecurity/gracl_learn.c
@@ -0,0 +1,207 @@
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/poll.h>
+#include <linux/string.h>
+#include <linux/file.h>
+#include <linux/types.h>
+#include <linux/vmalloc.h>
+#include <linux/grinternal.h>
+
+extern ssize_t write_grsec_handler(struct file * file, const char __user * buf,
+				   size_t count, loff_t *ppos);
+extern int gr_acl_is_enabled(void);
+
+static DECLARE_WAIT_QUEUE_HEAD(learn_wait);
+static int gr_learn_attached;
+
+/* use a 512k buffer */
+#define LEARN_BUFFER_SIZE (512 * 1024)
+
+static DEFINE_SPINLOCK(gr_learn_lock);
+static DEFINE_MUTEX(gr_learn_user_mutex);
+
+/* we need to maintain two buffers, so that the kernel context of grlearn
+   uses a semaphore around the userspace copying, and the other kernel contexts
+   use a spinlock when copying into the buffer, since they cannot sleep
+*/
+static char *learn_buffer;
+static char *learn_buffer_user;
+static int learn_buffer_len;
+static int learn_buffer_user_len;
+
+static ssize_t
+read_learn(struct file *file, char __user * buf, size_t count, loff_t * ppos)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	ssize_t retval = 0;
+
+	add_wait_queue(&learn_wait, &wait);
+	set_current_state(TASK_INTERRUPTIBLE);
+	do {
+		mutex_lock(&gr_learn_user_mutex);
+		spin_lock(&gr_learn_lock);
+		if (learn_buffer_len)
+			break;
+		spin_unlock(&gr_learn_lock);
+		mutex_unlock(&gr_learn_user_mutex);
+		if (file->f_flags & O_NONBLOCK) {
+			retval = -EAGAIN;
+			goto out;
+		}
+		if (signal_pending(current)) {
+			retval = -ERESTARTSYS;
+			goto out;
+		}
+
+		schedule();
+	} while (1);
+
+	memcpy(learn_buffer_user, learn_buffer, learn_buffer_len);
+	learn_buffer_user_len = learn_buffer_len;
+	retval = learn_buffer_len;
+	learn_buffer_len = 0;
+
+	spin_unlock(&gr_learn_lock);
+
+	if (copy_to_user(buf, learn_buffer_user, learn_buffer_user_len))
+		retval = -EFAULT;
+
+	mutex_unlock(&gr_learn_user_mutex);
+out:
+	set_current_state(TASK_RUNNING);
+	remove_wait_queue(&learn_wait, &wait);
+	return retval;
+}
+
+static unsigned int
+poll_learn(struct file * file, poll_table * wait)
+{
+	poll_wait(file, &learn_wait, wait);
+
+	if (learn_buffer_len)
+		return (POLLIN | POLLRDNORM);
+
+	return 0;
+}
+
+void
+gr_clear_learn_entries(void)
+{
+	char *tmp;
+
+	mutex_lock(&gr_learn_user_mutex);
+	spin_lock(&gr_learn_lock);
+	tmp = learn_buffer;
+	learn_buffer = NULL;
+	spin_unlock(&gr_learn_lock);
+	if (tmp)
+		vfree(tmp);
+	if (learn_buffer_user != NULL) {
+		vfree(learn_buffer_user);
+		learn_buffer_user = NULL;
+	}
+	learn_buffer_len = 0;
+	mutex_unlock(&gr_learn_user_mutex);
+
+	return;
+}
+
+void
+gr_add_learn_entry(const char *fmt, ...)
+{
+	va_list args;
+	unsigned int len;
+
+	if (!gr_learn_attached)
+		return;
+
+	spin_lock(&gr_learn_lock);
+
+	/* leave a gap at the end so we know when it's "full" but don't have to
+	   compute the exact length of the string we're trying to append
+	*/
+	if (learn_buffer_len > LEARN_BUFFER_SIZE - 16384) {
+		spin_unlock(&gr_learn_lock);
+		wake_up_interruptible(&learn_wait);
+		return;
+	}
+	if (learn_buffer == NULL) {
+		spin_unlock(&gr_learn_lock);
+		return;
+	}
+
+	va_start(args, fmt);
+	len = vsnprintf(learn_buffer + learn_buffer_len, LEARN_BUFFER_SIZE - learn_buffer_len, fmt, args);
+	va_end(args);
+
+	learn_buffer_len += len + 1;
+
+	spin_unlock(&gr_learn_lock);
+	wake_up_interruptible(&learn_wait);
+
+	return;
+}
+
+static int
+open_learn(struct inode *inode, struct file *file)
+{
+	if (file->f_mode & FMODE_READ && gr_learn_attached)
+		return -EBUSY;
+	if (file->f_mode & FMODE_READ) {
+		int retval = 0;
+		mutex_lock(&gr_learn_user_mutex);
+		if (learn_buffer == NULL)
+			learn_buffer = vmalloc(LEARN_BUFFER_SIZE);
+		if (learn_buffer_user == NULL)
+			learn_buffer_user = vmalloc(LEARN_BUFFER_SIZE);
+		if (learn_buffer == NULL) {
+			retval = -ENOMEM;
+			goto out_error;
+		}
+		if (learn_buffer_user == NULL) {
+			retval = -ENOMEM;
+			goto out_error;
+		}
+		learn_buffer_len = 0;
+		learn_buffer_user_len = 0;
+		gr_learn_attached = 1;
+out_error:
+		mutex_unlock(&gr_learn_user_mutex);
+		return retval;
+	}
+	return 0;
+}
+
+static int
+close_learn(struct inode *inode, struct file *file)
+{
+	if (file->f_mode & FMODE_READ) {
+		char *tmp = NULL;
+		mutex_lock(&gr_learn_user_mutex);
+		spin_lock(&gr_learn_lock);
+		tmp = learn_buffer;
+		learn_buffer = NULL;
+		spin_unlock(&gr_learn_lock);
+		if (tmp)
+			vfree(tmp);
+		if (learn_buffer_user != NULL) {
+			vfree(learn_buffer_user);
+			learn_buffer_user = NULL;
+		}
+		learn_buffer_len = 0;
+		learn_buffer_user_len = 0;
+		gr_learn_attached = 0;
+		mutex_unlock(&gr_learn_user_mutex);
+	}
+
+	return 0;
+}
+		
+const struct file_operations grsec_fops = {
+	.read		= read_learn,
+	.write		= write_grsec_handler,
+	.open		= open_learn,
+	.release	= close_learn,
+	.poll		= poll_learn,
+};
diff --git a/grsecurity/gracl_policy.c b/grsecurity/gracl_policy.c
new file mode 100644
index 0000000..3f8ade0
--- /dev/null
+++ b/grsecurity/gracl_policy.c
@@ -0,0 +1,1782 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/namei.h>
+#include <linux/mount.h>
+#include <linux/tty.h>
+#include <linux/proc_fs.h>
+#include <linux/lglock.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/types.h>
+#include <linux/sysctl.h>
+#include <linux/netdevice.h>
+#include <linux/ptrace.h>
+#include <linux/gracl.h>
+#include <linux/gralloc.h>
+#include <linux/security.h>
+#include <linux/grinternal.h>
+#include <linux/pid_namespace.h>
+#include <linux/stop_machine.h>
+#include <linux/fdtable.h>
+#include <linux/percpu.h>
+#include <linux/lglock.h>
+#include <linux/hugetlb.h>
+#include <linux/posix-timers.h>
+#include "../fs/mount.h"
+
+#include <asm/uaccess.h>
+#include <asm/errno.h>
+#include <asm/mman.h>
+
+extern struct gr_policy_state *polstate;
+
+#define FOR_EACH_ROLE_START(role) \
+	role = polstate->role_list; \
+	while (role) {
+
+#define FOR_EACH_ROLE_END(role) \
+		role = role->prev; \
+	}
+
+struct path gr_real_root;
+
+extern struct gr_alloc_state *current_alloc_state;
+
+u16 acl_sp_role_value;
+
+static DEFINE_MUTEX(gr_dev_mutex);
+
+extern int chkpw(struct gr_arg *entry, unsigned char *salt, unsigned char *sum);
+extern void gr_clear_learn_entries(void);
+
+struct gr_arg *gr_usermode __read_only;
+unsigned char *gr_system_salt __read_only;
+unsigned char *gr_system_sum __read_only;
+
+static unsigned int gr_auth_attempts = 0;
+static unsigned long gr_auth_expires = 0UL;
+
+struct acl_object_label *fakefs_obj_rw;
+struct acl_object_label *fakefs_obj_rwx;
+
+extern int gr_init_uidset(void);
+extern void gr_free_uidset(void);
+extern void gr_remove_uid(uid_t uid);
+extern int gr_find_uid(uid_t uid);
+
+extern struct acl_subject_label *__gr_get_subject_for_task(const struct gr_policy_state *state, struct task_struct *task, const char *filename);
+extern void __gr_apply_subject_to_task(struct gr_policy_state *state, struct task_struct *task, struct acl_subject_label *subj);
+extern int gr_streq(const char *a, const char *b, const unsigned int lena, const unsigned int lenb);
+extern void __insert_inodev_entry(const struct gr_policy_state *state, struct inodev_entry *entry);
+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);
+extern void insert_acl_obj_label(struct acl_object_label *obj, struct acl_subject_label *subj);
+extern void insert_acl_subj_label(struct acl_subject_label *obj, struct acl_role_label *role);
+extern struct name_entry * __lookup_name_entry(const struct gr_policy_state *state, const char *name);
+extern char *gr_to_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt);
+extern struct acl_subject_label *lookup_acl_subj_label(const ino_t ino, const dev_t dev, const struct acl_role_label *role);
+extern struct acl_subject_label *lookup_acl_subj_label_deleted(const ino_t ino, const dev_t dev, const struct acl_role_label *role);
+extern void assign_special_role(const char *rolename);
+extern struct acl_subject_label *chk_subj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt, const struct acl_role_label *role);
+extern int gr_rbac_disable(void *unused);
+extern void gr_enable_rbac_system(void);
+
+static int copy_acl_object_label_normal(struct acl_object_label *obj, const struct acl_object_label *userp)
+{
+	if (copy_from_user(obj, userp, sizeof(struct acl_object_label)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_acl_ip_label_normal(struct acl_ip_label *ip, const struct acl_ip_label *userp)
+{
+	if (copy_from_user(ip, userp, sizeof(struct acl_ip_label)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_acl_subject_label_normal(struct acl_subject_label *subj, const struct acl_subject_label *userp)
+{
+	if (copy_from_user(subj, userp, sizeof(struct acl_subject_label)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_acl_role_label_normal(struct acl_role_label *role, const struct acl_role_label *userp)
+{
+	if (copy_from_user(role, userp, sizeof(struct acl_role_label)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_role_allowed_ip_normal(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp)
+{
+	if (copy_from_user(roleip, userp, sizeof(struct role_allowed_ip)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_sprole_pw_normal(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp)
+{
+	if (copy_from_user(pw, userp + idx, sizeof(struct sprole_pw)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_gr_hash_struct_normal(struct gr_hash_struct *hash, const struct gr_hash_struct *userp)
+{
+	if (copy_from_user(hash, userp, sizeof(struct gr_hash_struct)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_role_transition_normal(struct role_transition *trans, const struct role_transition *userp)
+{
+	if (copy_from_user(trans, userp, sizeof(struct role_transition)))
+		return -EFAULT;
+
+	return 0;
+}
+
+int copy_pointer_from_array_normal(void *ptr, unsigned long idx, const void *userp)
+{
+	if (copy_from_user(ptr, userp + (idx * sizeof(void *)), sizeof(void *)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static int copy_gr_arg_wrapper_normal(const char __user *buf, struct gr_arg_wrapper *uwrap)
+{
+	if (copy_from_user(uwrap, buf, sizeof (struct gr_arg_wrapper)))
+		return -EFAULT;
+
+	if (((uwrap->version != GRSECURITY_VERSION) &&
+	     (uwrap->version != 0x2901)) ||
+	    (uwrap->size != sizeof(struct gr_arg)))
+		return -EINVAL;
+
+	return 0;
+}
+
+static int copy_gr_arg_normal(const struct gr_arg __user *buf, struct gr_arg *arg)
+{
+	if (copy_from_user(arg, buf, sizeof (struct gr_arg)))
+		return -EFAULT;
+
+	return 0;
+}
+
+static size_t get_gr_arg_wrapper_size_normal(void)
+{
+	return sizeof(struct gr_arg_wrapper);
+}
+
+#ifdef CONFIG_COMPAT
+extern int copy_gr_arg_wrapper_compat(const char *buf, struct gr_arg_wrapper *uwrap);
+extern int copy_gr_arg_compat(const struct gr_arg __user *buf, struct gr_arg *arg);
+extern int copy_acl_object_label_compat(struct acl_object_label *obj, const struct acl_object_label *userp);
+extern int copy_acl_subject_label_compat(struct acl_subject_label *subj, const struct acl_subject_label *userp);
+extern int copy_acl_role_label_compat(struct acl_role_label *role, const struct acl_role_label *userp);
+extern int copy_role_allowed_ip_compat(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp);
+extern int copy_role_transition_compat(struct role_transition *trans, const struct role_transition *userp);
+extern int copy_gr_hash_struct_compat(struct gr_hash_struct *hash, const struct gr_hash_struct *userp);
+extern int copy_pointer_from_array_compat(void *ptr, unsigned long idx, const void *userp);
+extern int copy_acl_ip_label_compat(struct acl_ip_label *ip, const struct acl_ip_label *userp);
+extern int copy_sprole_pw_compat(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp);
+extern size_t get_gr_arg_wrapper_size_compat(void);
+
+int (* copy_gr_arg_wrapper)(const char *buf, struct gr_arg_wrapper *uwrap) __read_only;
+int (* copy_gr_arg)(const struct gr_arg *buf, struct gr_arg *arg) __read_only;
+int (* copy_acl_object_label)(struct acl_object_label *obj, const struct acl_object_label *userp) __read_only;
+int (* copy_acl_subject_label)(struct acl_subject_label *subj, const struct acl_subject_label *userp) __read_only;
+int (* copy_acl_role_label)(struct acl_role_label *role, const struct acl_role_label *userp) __read_only;
+int (* copy_acl_ip_label)(struct acl_ip_label *ip, const struct acl_ip_label *userp) __read_only;
+int (* copy_pointer_from_array)(void *ptr, unsigned long idx, const void *userp) __read_only;
+int (* copy_sprole_pw)(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp) __read_only;
+int (* copy_gr_hash_struct)(struct gr_hash_struct *hash, const struct gr_hash_struct *userp) __read_only;
+int (* copy_role_transition)(struct role_transition *trans, const struct role_transition *userp) __read_only;
+int (* copy_role_allowed_ip)(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp) __read_only;
+size_t (* get_gr_arg_wrapper_size)(void) __read_only;
+
+#else
+#define copy_gr_arg_wrapper copy_gr_arg_wrapper_normal
+#define copy_gr_arg copy_gr_arg_normal
+#define copy_gr_hash_struct copy_gr_hash_struct_normal
+#define copy_acl_object_label copy_acl_object_label_normal
+#define copy_acl_subject_label copy_acl_subject_label_normal
+#define copy_acl_role_label copy_acl_role_label_normal
+#define copy_acl_ip_label copy_acl_ip_label_normal
+#define copy_pointer_from_array copy_pointer_from_array_normal
+#define copy_sprole_pw copy_sprole_pw_normal
+#define copy_role_transition copy_role_transition_normal
+#define copy_role_allowed_ip copy_role_allowed_ip_normal
+#define get_gr_arg_wrapper_size get_gr_arg_wrapper_size_normal
+#endif
+
+static struct acl_subject_label *
+lookup_subject_map(const struct acl_subject_label *userp)
+{
+	unsigned int index = gr_shash(userp, polstate->subj_map_set.s_size);
+	struct subject_map *match;
+
+	match = polstate->subj_map_set.s_hash[index];
+
+	while (match && match->user != userp)
+		match = match->next;
+
+	if (match != NULL)
+		return match->kernel;
+	else
+		return NULL;
+}
+
+static void
+insert_subj_map_entry(struct subject_map *subjmap)
+{
+	unsigned int index = gr_shash(subjmap->user, polstate->subj_map_set.s_size);
+	struct subject_map **curr;
+
+	subjmap->prev = NULL;
+
+	curr = &polstate->subj_map_set.s_hash[index];
+	if (*curr != NULL)
+		(*curr)->prev = subjmap;
+
+	subjmap->next = *curr;
+	*curr = subjmap;
+
+	return;
+}
+
+static void
+__insert_acl_role_label(struct acl_role_label *role, uid_t uidgid)
+{
+	unsigned int index =
+	    gr_rhash(uidgid, role->roletype & (GR_ROLE_USER | GR_ROLE_GROUP), polstate->acl_role_set.r_size);
+	struct acl_role_label **curr;
+	struct acl_role_label *tmp, *tmp2;
+
+	curr = &polstate->acl_role_set.r_hash[index];
+
+	/* simple case, slot is empty, just set it to our role */
+	if (*curr == NULL) {
+		*curr = role;
+	} else {
+		/* example:
+		   1 -> 2 -> 3 (adding 2 -> 3 to here)
+		   2 -> 3
+		*/
+		/* first check to see if we can already be reached via this slot */
+		tmp = *curr;
+		while (tmp && tmp != role)
+			tmp = tmp->next;
+		if (tmp == role) {
+			/* we don't need to add ourselves to this slot's chain */
+			return;
+		}
+		/* we need to add ourselves to this chain, two cases */
+		if (role->next == NULL) {
+			/* simple case, append the current chain to our role */
+			role->next = *curr;
+			*curr = role;
+		} else {
+			/* 1 -> 2 -> 3 -> 4
+			   2 -> 3 -> 4
+			   3 -> 4 (adding 1 -> 2 -> 3 -> 4 to here)
+			*/			   
+			/* trickier case: walk our role's chain until we find
+			   the role for the start of the current slot's chain */
+			tmp = role;
+			tmp2 = *curr;
+			while (tmp->next && tmp->next != tmp2)
+				tmp = tmp->next;
+			if (tmp->next == tmp2) {
+				/* from example above, we found 3, so just
+				   replace this slot's chain with ours */
+				*curr = role;
+			} else {
+				/* we didn't find a subset of our role's chain
+				   in the current slot's chain, so append their
+				   chain to ours, and set us as the first role in
+				   the slot's chain
+
+				   we could fold this case with the case above,
+				   but making it explicit for clarity
+				*/
+				tmp->next = tmp2;
+				*curr = role;
+			}
+		}
+	}
+
+	return;
+}
+
+static void
+insert_acl_role_label(struct acl_role_label *role)
+{
+	int i;
+
+	if (polstate->role_list == NULL) {
+		polstate->role_list = role;
+		role->prev = NULL;
+	} else {
+		role->prev = polstate->role_list;
+		polstate->role_list = role;
+	}
+	
+	/* used for hash chains */
+	role->next = NULL;
+
+	if (role->roletype & GR_ROLE_DOMAIN) {
+		for (i = 0; i < role->domain_child_num; i++)
+			__insert_acl_role_label(role, role->domain_children[i]);
+	} else
+		__insert_acl_role_label(role, role->uidgid);
+}
+					
+static int
+insert_name_entry(char *name, const ino_t inode, const dev_t device, __u8 deleted)
+{
+	struct name_entry **curr, *nentry;
+	struct inodev_entry *ientry;
+	unsigned int len = strlen(name);
+	unsigned int key = full_name_hash(name, len);
+	unsigned int index = key % polstate->name_set.n_size;
+
+	curr = &polstate->name_set.n_hash[index];
+
+	while (*curr && ((*curr)->key != key || !gr_streq((*curr)->name, name, (*curr)->len, len)))
+		curr = &((*curr)->next);
+
+	if (*curr != NULL)
+		return 1;
+
+	nentry = acl_alloc(sizeof (struct name_entry));
+	if (nentry == NULL)
+		return 0;
+	ientry = acl_alloc(sizeof (struct inodev_entry));
+	if (ientry == NULL)
+		return 0;
+	ientry->nentry = nentry;
+
+	nentry->key = key;
+	nentry->name = name;
+	nentry->inode = inode;
+	nentry->device = device;
+	nentry->len = len;
+	nentry->deleted = deleted;
+
+	nentry->prev = NULL;
+	curr = &polstate->name_set.n_hash[index];
+	if (*curr != NULL)
+		(*curr)->prev = nentry;
+	nentry->next = *curr;
+	*curr = nentry;
+
+	/* insert us into the table searchable by inode/dev */
+	__insert_inodev_entry(polstate, ientry);
+
+	return 1;
+}
+
+/* allocating chained hash tables, so optimal size is where lambda ~ 1 */
+
+static void *
+create_table(__u32 * len, int elementsize)
+{
+	unsigned int table_sizes[] = {
+		7, 13, 31, 61, 127, 251, 509, 1021, 2039, 4093, 8191, 16381,
+		32749, 65521, 131071, 262139, 524287, 1048573, 2097143,
+		4194301, 8388593, 16777213, 33554393, 67108859
+	};
+	void *newtable = NULL;
+	unsigned int pwr = 0;
+
+	while ((pwr < ((sizeof (table_sizes) / sizeof (table_sizes[0])) - 1)) &&
+	       table_sizes[pwr] <= *len)
+		pwr++;
+
+	if (table_sizes[pwr] <= *len || (table_sizes[pwr] > ULONG_MAX / elementsize))
+		return newtable;
+
+	if ((table_sizes[pwr] * elementsize) <= PAGE_SIZE)
+		newtable =
+		    kmalloc(table_sizes[pwr] * elementsize, GFP_KERNEL);
+	else
+		newtable = vmalloc(table_sizes[pwr] * elementsize);
+
+	*len = table_sizes[pwr];
+
+	return newtable;
+}
+
+static int
+init_variables(const struct gr_arg *arg, bool reload)
+{
+	struct task_struct *reaper = init_pid_ns.child_reaper;
+	unsigned int stacksize;
+
+	polstate->subj_map_set.s_size = arg->role_db.num_subjects;
+	polstate->acl_role_set.r_size = arg->role_db.num_roles + arg->role_db.num_domain_children;
+	polstate->name_set.n_size = arg->role_db.num_objects;
+	polstate->inodev_set.i_size = arg->role_db.num_objects;
+
+	if (!polstate->subj_map_set.s_size || !polstate->acl_role_set.r_size ||
+	    !polstate->name_set.n_size || !polstate->inodev_set.i_size)
+		return 1;
+
+	if (!reload) {
+		if (!gr_init_uidset())
+			return 1;
+	}
+
+	/* set up the stack that holds allocation info */
+
+	stacksize = arg->role_db.num_pointers + 5;
+
+	if (!acl_alloc_stack_init(stacksize))
+		return 1;
+
+	if (!reload) {
+		/* grab reference for the real root dentry and vfsmount */
+		get_fs_root(reaper->fs, &gr_real_root);
+	
+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
+	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);
+#endif
+
+		fakefs_obj_rw = kzalloc(sizeof(struct acl_object_label), GFP_KERNEL);
+		if (fakefs_obj_rw == NULL)
+			return 1;
+		fakefs_obj_rw->mode = GR_FIND | GR_READ | GR_WRITE;
+	
+		fakefs_obj_rwx = kzalloc(sizeof(struct acl_object_label), GFP_KERNEL);
+		if (fakefs_obj_rwx == NULL)
+			return 1;
+		fakefs_obj_rwx->mode = GR_FIND | GR_READ | GR_WRITE | GR_EXEC;
+	}
+
+	polstate->subj_map_set.s_hash =
+	    (struct subject_map **) create_table(&polstate->subj_map_set.s_size, sizeof(void *));
+	polstate->acl_role_set.r_hash =
+	    (struct acl_role_label **) create_table(&polstate->acl_role_set.r_size, sizeof(void *));
+	polstate->name_set.n_hash = (struct name_entry **) create_table(&polstate->name_set.n_size, sizeof(void *));
+	polstate->inodev_set.i_hash =
+	    (struct inodev_entry **) create_table(&polstate->inodev_set.i_size, sizeof(void *));
+
+	if (!polstate->subj_map_set.s_hash || !polstate->acl_role_set.r_hash ||
+	    !polstate->name_set.n_hash || !polstate->inodev_set.i_hash)
+		return 1;
+
+	memset(polstate->subj_map_set.s_hash, 0,
+	       sizeof(struct subject_map *) * polstate->subj_map_set.s_size);
+	memset(polstate->acl_role_set.r_hash, 0,
+	       sizeof (struct acl_role_label *) * polstate->acl_role_set.r_size);
+	memset(polstate->name_set.n_hash, 0,
+	       sizeof (struct name_entry *) * polstate->name_set.n_size);
+	memset(polstate->inodev_set.i_hash, 0,
+	       sizeof (struct inodev_entry *) * polstate->inodev_set.i_size);
+
+	return 0;
+}
+
+/* free information not needed after startup
+   currently contains user->kernel pointer mappings for subjects
+*/
+
+static void
+free_init_variables(void)
+{
+	__u32 i;
+
+	if (polstate->subj_map_set.s_hash) {
+		for (i = 0; i < polstate->subj_map_set.s_size; i++) {
+			if (polstate->subj_map_set.s_hash[i]) {
+				kfree(polstate->subj_map_set.s_hash[i]);
+				polstate->subj_map_set.s_hash[i] = NULL;
+			}
+		}
+
+		if ((polstate->subj_map_set.s_size * sizeof (struct subject_map *)) <=
+		    PAGE_SIZE)
+			kfree(polstate->subj_map_set.s_hash);
+		else
+			vfree(polstate->subj_map_set.s_hash);
+	}
+
+	return;
+}
+
+static void
+free_variables(bool reload)
+{
+	struct acl_subject_label *s;
+	struct acl_role_label *r;
+	struct task_struct *task, *task2;
+	unsigned int x;
+
+	if (!reload) {
+		gr_clear_learn_entries();
+
+		read_lock(&tasklist_lock);
+		do_each_thread(task2, task) {
+			task->acl_sp_role = 0;
+			task->acl_role_id = 0;
+			task->inherited = 0;
+			task->acl = NULL;
+			task->role = NULL;
+		} while_each_thread(task2, task);
+		read_unlock(&tasklist_lock);
+
+		kfree(fakefs_obj_rw);
+		fakefs_obj_rw = NULL;
+		kfree(fakefs_obj_rwx);
+		fakefs_obj_rwx = NULL;
+
+		/* release the reference to the real root dentry and vfsmount */
+		path_put(&gr_real_root);
+		memset(&gr_real_root, 0, sizeof(gr_real_root));
+	}
+
+	/* free all object hash tables */
+
+	FOR_EACH_ROLE_START(r)
+		if (r->subj_hash == NULL)
+			goto next_role;
+		FOR_EACH_SUBJECT_START(r, s, x)
+			if (s->obj_hash == NULL)
+				break;
+			if ((s->obj_hash_size * sizeof (struct acl_object_label *)) <= PAGE_SIZE)
+				kfree(s->obj_hash);
+			else
+				vfree(s->obj_hash);
+		FOR_EACH_SUBJECT_END(s, x)
+		FOR_EACH_NESTED_SUBJECT_START(r, s)
+			if (s->obj_hash == NULL)
+				break;
+			if ((s->obj_hash_size * sizeof (struct acl_object_label *)) <= PAGE_SIZE)
+				kfree(s->obj_hash);
+			else
+				vfree(s->obj_hash);
+		FOR_EACH_NESTED_SUBJECT_END(s)
+		if ((r->subj_hash_size * sizeof (struct acl_subject_label *)) <= PAGE_SIZE)
+			kfree(r->subj_hash);
+		else
+			vfree(r->subj_hash);
+		r->subj_hash = NULL;
+next_role:
+	FOR_EACH_ROLE_END(r)
+
+	acl_free_all();
+
+	if (polstate->acl_role_set.r_hash) {
+		if ((polstate->acl_role_set.r_size * sizeof (struct acl_role_label *)) <=
+		    PAGE_SIZE)
+			kfree(polstate->acl_role_set.r_hash);
+		else
+			vfree(polstate->acl_role_set.r_hash);
+	}
+	if (polstate->name_set.n_hash) {
+		if ((polstate->name_set.n_size * sizeof (struct name_entry *)) <=
+		    PAGE_SIZE)
+			kfree(polstate->name_set.n_hash);
+		else
+			vfree(polstate->name_set.n_hash);
+	}
+
+	if (polstate->inodev_set.i_hash) {
+		if ((polstate->inodev_set.i_size * sizeof (struct inodev_entry *)) <=
+		    PAGE_SIZE)
+			kfree(polstate->inodev_set.i_hash);
+		else
+			vfree(polstate->inodev_set.i_hash);
+	}
+
+	if (!reload)
+		gr_free_uidset();
+
+	memset(&polstate->name_set, 0, sizeof (struct name_db));
+	memset(&polstate->inodev_set, 0, sizeof (struct inodev_db));
+	memset(&polstate->acl_role_set, 0, sizeof (struct acl_role_db));
+	memset(&polstate->subj_map_set, 0, sizeof (struct acl_subj_map_db));
+
+	polstate->default_role = NULL;
+	polstate->kernel_role = NULL;
+	polstate->role_list = NULL;
+
+	return;
+}
+
+static struct acl_subject_label *
+do_copy_user_subj(struct acl_subject_label *userp, struct acl_role_label *role, int *already_copied);
+
+static int alloc_and_copy_string(char **name, unsigned int maxlen)
+{
+	unsigned int len = strnlen_user(*name, maxlen);
+	char *tmp;
+
+	if (!len || len >= maxlen)
+		return -EINVAL;
+
+	if ((tmp = (char *) acl_alloc(len)) == NULL)
+		return -ENOMEM;
+
+	if (copy_from_user(tmp, *name, len))
+		return -EFAULT;
+
+	tmp[len-1] = '\0';
+	*name = tmp;
+
+	return 0;
+}
+
+static int
+copy_user_glob(struct acl_object_label *obj)
+{
+	struct acl_object_label *g_tmp, **guser;
+	int error;
+
+	if (obj->globbed == NULL)
+		return 0;
+
+	guser = &obj->globbed;
+	while (*guser) {
+		g_tmp = (struct acl_object_label *)
+			acl_alloc(sizeof (struct acl_object_label));
+		if (g_tmp == NULL)
+			return -ENOMEM;
+
+		if (copy_acl_object_label(g_tmp, *guser))
+			return -EFAULT;
+
+		error = alloc_and_copy_string(&g_tmp->filename, PATH_MAX);
+		if (error)
+			return error;
+
+		*guser = g_tmp;
+		guser = &(g_tmp->next);
+	}
+
+	return 0;
+}
+
+static int
+copy_user_objs(struct acl_object_label *userp, struct acl_subject_label *subj,
+	       struct acl_role_label *role)
+{
+	struct acl_object_label *o_tmp;
+	int ret;
+
+	while (userp) {
+		if ((o_tmp = (struct acl_object_label *)
+		     acl_alloc(sizeof (struct acl_object_label))) == NULL)
+			return -ENOMEM;
+
+		if (copy_acl_object_label(o_tmp, userp))
+			return -EFAULT;
+
+		userp = o_tmp->prev;
+
+		ret = alloc_and_copy_string(&o_tmp->filename, PATH_MAX);
+		if (ret)
+			return ret;
+
+		insert_acl_obj_label(o_tmp, subj);
+		if (!insert_name_entry(o_tmp->filename, o_tmp->inode,
+				       o_tmp->device, (o_tmp->mode & GR_DELETED) ? 1 : 0))
+			return -ENOMEM;
+
+		ret = copy_user_glob(o_tmp);
+		if (ret)
+			return ret;
+
+		if (o_tmp->nested) {
+			int already_copied;
+
+			o_tmp->nested = do_copy_user_subj(o_tmp->nested, role, &already_copied);
+			if (IS_ERR(o_tmp->nested))
+				return PTR_ERR(o_tmp->nested);
+
+			/* insert into nested subject list if we haven't copied this one yet
+			   to prevent duplicate entries */
+			if (!already_copied) {
+				o_tmp->nested->next = role->hash->first;
+				role->hash->first = o_tmp->nested;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static __u32
+count_user_subjs(struct acl_subject_label *userp)
+{
+	struct acl_subject_label s_tmp;
+	__u32 num = 0;
+
+	while (userp) {
+		if (copy_acl_subject_label(&s_tmp, userp))
+			break;
+
+		userp = s_tmp.prev;
+	}
+
+	return num;
+}
+
+static int
+copy_user_allowedips(struct acl_role_label *rolep)
+{
+	struct role_allowed_ip *ruserip, *rtmp = NULL, *rlast;
+
+	ruserip = rolep->allowed_ips;
+
+	while (ruserip) {
+		rlast = rtmp;
+
+		if ((rtmp = (struct role_allowed_ip *)
+		     acl_alloc(sizeof (struct role_allowed_ip))) == NULL)
+			return -ENOMEM;
+
+		if (copy_role_allowed_ip(rtmp, ruserip))
+			return -EFAULT;
+
+		ruserip = rtmp->prev;
+
+		if (!rlast) {
+			rtmp->prev = NULL;
+			rolep->allowed_ips = rtmp;
+		} else {
+			rlast->next = rtmp;
+			rtmp->prev = rlast;
+		}
+
+		if (!ruserip)
+			rtmp->next = NULL;
+	}
+
+	return 0;
+}
+
+static int
+copy_user_transitions(struct acl_role_label *rolep)
+{
+	struct role_transition *rusertp, *rtmp = NULL, *rlast;
+	int error;
+
+	rusertp = rolep->transitions;
+
+	while (rusertp) {
+		rlast = rtmp;
+
+		if ((rtmp = (struct role_transition *)
+		     acl_alloc(sizeof (struct role_transition))) == NULL)
+			return -ENOMEM;
+
+		if (copy_role_transition(rtmp, rusertp))
+			return -EFAULT;
+
+		rusertp = rtmp->prev;
+
+		error = alloc_and_copy_string(&rtmp->rolename, GR_SPROLE_LEN);
+		if (error)
+			return error;
+
+		if (!rlast) {
+			rtmp->prev = NULL;
+			rolep->transitions = rtmp;
+		} else {
+			rlast->next = rtmp;
+			rtmp->prev = rlast;
+		}
+
+		if (!rusertp)
+			rtmp->next = NULL;
+	}
+
+	return 0;
+}
+
+static __u32 count_user_objs(const struct acl_object_label __user *userp)
+{
+	struct acl_object_label o_tmp;
+	__u32 num = 0;
+
+	while (userp) {
+		if (copy_acl_object_label(&o_tmp, userp))
+			break;
+
+		userp = o_tmp.prev;
+		num++;
+	}
+
+	return num;
+}
+
+static struct acl_subject_label *
+do_copy_user_subj(struct acl_subject_label *userp, struct acl_role_label *role, int *already_copied)
+{
+	struct acl_subject_label *s_tmp = NULL, *s_tmp2;
+	__u32 num_objs;
+	struct acl_ip_label **i_tmp, *i_utmp2;
+	struct gr_hash_struct ghash;
+	struct subject_map *subjmap;
+	unsigned int i_num;
+	int err;
+
+	if (already_copied != NULL)
+		*already_copied = 0;
+
+	s_tmp = lookup_subject_map(userp);
+
+	/* we've already copied this subject into the kernel, just return
+	   the reference to it, and don't copy it over again
+	*/
+	if (s_tmp) {
+		if (already_copied != NULL)
+			*already_copied = 1;
+		return(s_tmp);
+	}
+
+	if ((s_tmp = (struct acl_subject_label *)
+	    acl_alloc(sizeof (struct acl_subject_label))) == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	subjmap = (struct subject_map *)kmalloc(sizeof (struct subject_map), GFP_KERNEL);
+	if (subjmap == NULL)
+		return ERR_PTR(-ENOMEM);
+
+	subjmap->user = userp;
+	subjmap->kernel = s_tmp;
+	insert_subj_map_entry(subjmap);
+
+	if (copy_acl_subject_label(s_tmp, userp))
+		return ERR_PTR(-EFAULT);
+
+	err = alloc_and_copy_string(&s_tmp->filename, PATH_MAX);
+	if (err)
+		return ERR_PTR(err);
+
+	if (!strcmp(s_tmp->filename, "/"))
+		role->root_label = s_tmp;
+
+	if (copy_gr_hash_struct(&ghash, s_tmp->hash))
+		return ERR_PTR(-EFAULT);
+
+	/* copy user and group transition tables */
+
+	if (s_tmp->user_trans_num) {
+		uid_t *uidlist;
+
+		uidlist = (uid_t *)acl_alloc_num(s_tmp->user_trans_num, sizeof(uid_t));
+		if (uidlist == NULL)
+			return ERR_PTR(-ENOMEM);
+		if (copy_from_user(uidlist, s_tmp->user_transitions, s_tmp->user_trans_num * sizeof(uid_t)))
+			return ERR_PTR(-EFAULT);
+
+		s_tmp->user_transitions = uidlist;
+	}
+
+	if (s_tmp->group_trans_num) {
+		gid_t *gidlist;
+
+		gidlist = (gid_t *)acl_alloc_num(s_tmp->group_trans_num, sizeof(gid_t));
+		if (gidlist == NULL)
+			return ERR_PTR(-ENOMEM);
+		if (copy_from_user(gidlist, s_tmp->group_transitions, s_tmp->group_trans_num * sizeof(gid_t)))
+			return ERR_PTR(-EFAULT);
+
+		s_tmp->group_transitions = gidlist;
+	}
+
+	/* set up object hash table */
+	num_objs = count_user_objs(ghash.first);
+
+	s_tmp->obj_hash_size = num_objs;
+	s_tmp->obj_hash =
+	    (struct acl_object_label **)
+	    create_table(&(s_tmp->obj_hash_size), sizeof(void *));
+
+	if (!s_tmp->obj_hash)
+		return ERR_PTR(-ENOMEM);
+
+	memset(s_tmp->obj_hash, 0,
+	       s_tmp->obj_hash_size *
+	       sizeof (struct acl_object_label *));
+
+	/* add in objects */
+	err = copy_user_objs(ghash.first, s_tmp, role);
+
+	if (err)
+		return ERR_PTR(err);
+
+	/* set pointer for parent subject */
+	if (s_tmp->parent_subject) {
+		s_tmp2 = do_copy_user_subj(s_tmp->parent_subject, role, NULL);
+
+		if (IS_ERR(s_tmp2))
+			return s_tmp2;
+
+		s_tmp->parent_subject = s_tmp2;
+	}
+
+	/* add in ip acls */
+
+	if (!s_tmp->ip_num) {
+		s_tmp->ips = NULL;
+		goto insert;
+	}
+
+	i_tmp =
+	    (struct acl_ip_label **) acl_alloc_num(s_tmp->ip_num,
+					       sizeof (struct acl_ip_label *));
+
+	if (!i_tmp)
+		return ERR_PTR(-ENOMEM);
+
+	for (i_num = 0; i_num < s_tmp->ip_num; i_num++) {
+		*(i_tmp + i_num) =
+		    (struct acl_ip_label *)
+		    acl_alloc(sizeof (struct acl_ip_label));
+		if (!*(i_tmp + i_num))
+			return ERR_PTR(-ENOMEM);
+
+		if (copy_pointer_from_array(&i_utmp2, i_num, s_tmp->ips))
+			return ERR_PTR(-EFAULT);
+
+		if (copy_acl_ip_label(*(i_tmp + i_num), i_utmp2))
+			return ERR_PTR(-EFAULT);
+		
+		if ((*(i_tmp + i_num))->iface == NULL)
+			continue;
+
+		err = alloc_and_copy_string(&(*(i_tmp + i_num))->iface, IFNAMSIZ);
+		if (err)
+			return ERR_PTR(err);
+	}
+
+	s_tmp->ips = i_tmp;
+
+insert:
+	if (!insert_name_entry(s_tmp->filename, s_tmp->inode,
+			       s_tmp->device, (s_tmp->mode & GR_DELETED) ? 1 : 0))
+		return ERR_PTR(-ENOMEM);
+
+	return s_tmp;
+}
+
+static int
+copy_user_subjs(struct acl_subject_label *userp, struct acl_role_label *role)
+{
+	struct acl_subject_label s_pre;
+	struct acl_subject_label * ret;
+	int err;
+
+	while (userp) {
+		if (copy_acl_subject_label(&s_pre, userp))
+			return -EFAULT;
+		
+		ret = do_copy_user_subj(userp, role, NULL);
+
+		err = PTR_ERR(ret);
+		if (IS_ERR(ret))
+			return err;
+
+		insert_acl_subj_label(ret, role);
+
+		userp = s_pre.prev;
+	}
+
+	return 0;
+}
+
+static int
+copy_user_acl(struct gr_arg *arg)
+{
+	struct acl_role_label *r_tmp = NULL, **r_utmp, *r_utmp2;
+	struct acl_subject_label *subj_list;
+	struct sprole_pw *sptmp;
+	struct gr_hash_struct *ghash;
+	uid_t *domainlist;
+	unsigned int r_num;
+	int err = 0;
+	__u16 i;
+	__u32 num_subjs;
+
+	/* we need a default and kernel role */
+	if (arg->role_db.num_roles < 2)
+		return -EINVAL;
+
+	/* copy special role authentication info from userspace */
+
+	polstate->num_sprole_pws = arg->num_sprole_pws;
+	polstate->acl_special_roles = (struct sprole_pw **) acl_alloc_num(polstate->num_sprole_pws, sizeof(struct sprole_pw *));
+
+	if (!polstate->acl_special_roles && polstate->num_sprole_pws)
+		return -ENOMEM;
+
+	for (i = 0; i < polstate->num_sprole_pws; i++) {
+		sptmp = (struct sprole_pw *) acl_alloc(sizeof(struct sprole_pw));
+		if (!sptmp)
+			return -ENOMEM;
+		if (copy_sprole_pw(sptmp, i, arg->sprole_pws))
+			return -EFAULT;
+
+		err = alloc_and_copy_string((char **)&sptmp->rolename, GR_SPROLE_LEN);
+		if (err)
+			return err;
+
+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
+		printk(KERN_ALERT "Copying special role %s\n", sptmp->rolename);
+#endif
+
+		polstate->acl_special_roles[i] = sptmp;
+	}
+
+	r_utmp = (struct acl_role_label **) arg->role_db.r_table;
+
+	for (r_num = 0; r_num < arg->role_db.num_roles; r_num++) {
+		r_tmp = acl_alloc(sizeof (struct acl_role_label));
+
+		if (!r_tmp)
+			return -ENOMEM;
+
+		if (copy_pointer_from_array(&r_utmp2, r_num, r_utmp))
+			return -EFAULT;
+
+		if (copy_acl_role_label(r_tmp, r_utmp2))
+			return -EFAULT;
+
+		err = alloc_and_copy_string(&r_tmp->rolename, GR_SPROLE_LEN);
+		if (err)
+			return err;
+
+		if (!strcmp(r_tmp->rolename, "default")
+		    && (r_tmp->roletype & GR_ROLE_DEFAULT)) {
+			polstate->default_role = r_tmp;
+		} else if (!strcmp(r_tmp->rolename, ":::kernel:::")) {
+			polstate->kernel_role = r_tmp;
+		}
+
+		if ((ghash = (struct gr_hash_struct *) acl_alloc(sizeof(struct gr_hash_struct))) == NULL)
+			return -ENOMEM;
+
+		if (copy_gr_hash_struct(ghash, r_tmp->hash))
+			return -EFAULT;
+
+		r_tmp->hash = ghash;
+
+		num_subjs = count_user_subjs(r_tmp->hash->first);
+
+		r_tmp->subj_hash_size = num_subjs;
+		r_tmp->subj_hash =
+		    (struct acl_subject_label **)
+		    create_table(&(r_tmp->subj_hash_size), sizeof(void *));
+
+		if (!r_tmp->subj_hash)
+			return -ENOMEM;
+
+		err = copy_user_allowedips(r_tmp);
+		if (err)
+			return err;
+
+		/* copy domain info */
+		if (r_tmp->domain_children != NULL) {
+			domainlist = acl_alloc_num(r_tmp->domain_child_num, sizeof(uid_t));
+			if (domainlist == NULL)
+				return -ENOMEM;
+
+			if (copy_from_user(domainlist, r_tmp->domain_children, r_tmp->domain_child_num * sizeof(uid_t)))
+				return -EFAULT;
+
+			r_tmp->domain_children = domainlist;
+		}
+
+		err = copy_user_transitions(r_tmp);
+		if (err)
+			return err;
+
+		memset(r_tmp->subj_hash, 0,
+		       r_tmp->subj_hash_size *
+		       sizeof (struct acl_subject_label *));
+
+		/* acquire the list of subjects, then NULL out
+		   the list prior to parsing the subjects for this role,
+		   as during this parsing the list is replaced with a list
+		   of *nested* subjects for the role
+		*/
+		subj_list = r_tmp->hash->first;
+
+		/* set nested subject list to null */
+		r_tmp->hash->first = NULL;
+
+		err = copy_user_subjs(subj_list, r_tmp);
+
+		if (err)
+			return err;
+
+		insert_acl_role_label(r_tmp);
+	}
+
+	if (polstate->default_role == NULL || polstate->kernel_role == NULL)
+		return -EINVAL;
+
+	return err;
+}
+
+static int gracl_reload_apply_policies(void *reload)
+{
+	struct gr_reload_state *reload_state = (struct gr_reload_state *)reload;
+	struct task_struct *task, *task2;
+	struct acl_role_label *role, *rtmp;
+	struct acl_subject_label *subj;
+	const struct cred *cred;
+	int role_applied;
+	int ret = 0;
+
+	memcpy(&reload_state->oldpolicy, reload_state->oldpolicy_ptr, sizeof(struct gr_policy_state));
+	memcpy(&reload_state->oldalloc, reload_state->oldalloc_ptr, sizeof(struct gr_alloc_state));
+
+	/* first make sure we'll be able to apply the new policy cleanly */
+	do_each_thread(task2, task) {
+		if (task->exec_file == NULL)
+			continue;
+		role_applied = 0;
+		if (!reload_state->oldmode && task->role->roletype & GR_ROLE_SPECIAL) {
+			/* preserve special roles */
+			FOR_EACH_ROLE_START(role)
+				if ((role->roletype & GR_ROLE_SPECIAL) && !strcmp(task->role->rolename, role->rolename)) {
+					rtmp = task->role;
+					task->role = role;
+					role_applied = 1;
+					break;
+				}
+			FOR_EACH_ROLE_END(role)
+		}
+		if (!role_applied) {
+			cred = __task_cred(task);
+			rtmp = task->role;
+			task->role = __lookup_acl_role_label(polstate, task, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid));
+		}
+		/* this handles non-nested inherited subjects, nested subjects will still
+		   be dropped currently */
+		subj = __gr_get_subject_for_task(polstate, task, task->acl->filename);
+		task->tmpacl = __gr_get_subject_for_task(polstate, task, NULL);
+		/* change the role back so that we've made no modifications to the policy */
+		task->role = rtmp;
+
+		if (subj == NULL || task->tmpacl == NULL) {
+			ret = -EINVAL;
+			goto out;
+		}
+	} while_each_thread(task2, task);
+
+	/* now actually apply the policy */
+
+	do_each_thread(task2, task) {
+		if (task->exec_file) {
+			role_applied = 0;
+			if (!reload_state->oldmode && task->role->roletype & GR_ROLE_SPECIAL) {
+				/* preserve special roles */
+				FOR_EACH_ROLE_START(role)
+					if ((role->roletype & GR_ROLE_SPECIAL) && !strcmp(task->role->rolename, role->rolename)) {
+						task->role = role;
+						role_applied = 1;
+						break;
+					}
+				FOR_EACH_ROLE_END(role)
+			}
+			if (!role_applied) {
+				cred = __task_cred(task);
+				task->role = __lookup_acl_role_label(polstate, task, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid));
+			}
+			/* this handles non-nested inherited subjects, nested subjects will still
+			   be dropped currently */
+			if (!reload_state->oldmode && task->inherited)
+				subj = __gr_get_subject_for_task(polstate, task, task->acl->filename);
+			else {
+				/* looked up and tagged to the task previously */
+				subj = task->tmpacl;
+			}
+			/* subj will be non-null */
+			__gr_apply_subject_to_task(polstate, task, subj);
+			if (reload_state->oldmode) {
+				task->acl_role_id = 0;
+				task->acl_sp_role = 0;
+				task->inherited = 0;
+			}
+		} else {
+			// it's a kernel process
+			task->role = polstate->kernel_role;
+			task->acl = polstate->kernel_role->root_label;
+#ifdef CONFIG_GRKERNSEC_ACL_HIDEKERN
+			task->acl->mode &= ~GR_PROCFIND;
+#endif
+		}
+	} while_each_thread(task2, task);
+
+	memcpy(reload_state->oldpolicy_ptr, &reload_state->newpolicy, sizeof(struct gr_policy_state));
+	memcpy(reload_state->oldalloc_ptr, &reload_state->newalloc, sizeof(struct gr_alloc_state));
+
+out:
+
+	return ret;
+}
+
+static int gracl_reload(struct gr_arg *args, unsigned char oldmode)
+{
+	struct gr_reload_state new_reload_state = { };
+	int err;
+
+	new_reload_state.oldpolicy_ptr = polstate;
+	new_reload_state.oldalloc_ptr = current_alloc_state;
+	new_reload_state.oldmode = oldmode;
+
+	current_alloc_state = &new_reload_state.newalloc;
+	polstate = &new_reload_state.newpolicy;
+
+	/* everything relevant is now saved off, copy in the new policy */
+	if (init_variables(args, true)) {
+		gr_log_str(GR_DONT_AUDIT_GOOD, GR_INITF_ACL_MSG, GR_VERSION);
+		err = -ENOMEM;
+		goto error;
+	}
+
+	err = copy_user_acl(args);
+	free_init_variables();
+	if (err)
+		goto error;
+	/* the new policy is copied in, with the old policy available via saved_state
+	   first go through applying roles, making sure to preserve special roles
+	   then apply new subjects, making sure to preserve inherited and nested subjects,
+	   though currently only inherited subjects will be preserved
+	*/
+	err = stop_machine(gracl_reload_apply_policies, &new_reload_state, NULL);
+	if (err)
+		goto error;
+
+	/* we've now applied the new policy, so restore the old policy state to free it */
+	polstate = &new_reload_state.oldpolicy;
+	current_alloc_state = &new_reload_state.oldalloc;
+	free_variables(true);
+
+	/* oldpolicy/oldalloc_ptr point to the new policy/alloc states as they were copied
+	   to running_polstate/current_alloc_state inside stop_machine
+	*/
+	err = 0;
+	goto out;
+error:
+	/* on error of loading the new policy, we'll just keep the previous
+	   policy set around
+	*/
+	free_variables(true);
+
+	/* doesn't affect runtime, but maintains consistent state */
+out:
+	polstate = new_reload_state.oldpolicy_ptr;
+	current_alloc_state = new_reload_state.oldalloc_ptr;
+
+	return err;
+}
+
+static int
+gracl_init(struct gr_arg *args)
+{
+	int error = 0;
+
+	memcpy(gr_system_salt, args->salt, GR_SALT_LEN);
+	memcpy(gr_system_sum, args->sum, GR_SHA_LEN);
+
+	if (init_variables(args, false)) {
+		gr_log_str(GR_DONT_AUDIT_GOOD, GR_INITF_ACL_MSG, GR_VERSION);
+		error = -ENOMEM;
+		goto out;
+	}
+
+	error = copy_user_acl(args);
+	free_init_variables();
+	if (error)
+		goto out;
+
+	error = gr_set_acls(0);
+	if (error)
+		goto out;
+
+	gr_enable_rbac_system();
+
+	return 0;
+
+out:
+	free_variables(false);
+	return error;
+}
+
+static int
+lookup_special_role_auth(__u16 mode, const char *rolename, unsigned char **salt,
+			 unsigned char **sum)
+{
+	struct acl_role_label *r;
+	struct role_allowed_ip *ipp;
+	struct role_transition *trans;
+	unsigned int i;
+	int found = 0;
+	u32 curr_ip = current->signal->curr_ip;
+
+	current->signal->saved_ip = curr_ip;
+
+	/* check transition table */
+
+	for (trans = current->role->transitions; trans; trans = trans->next) {
+		if (!strcmp(rolename, trans->rolename)) {
+			found = 1;
+			break;
+		}
+	}
+
+	if (!found)
+		return 0;
+
+	/* handle special roles that do not require authentication
+	   and check ip */
+
+	FOR_EACH_ROLE_START(r)
+		if (!strcmp(rolename, r->rolename) &&
+		    (r->roletype & GR_ROLE_SPECIAL)) {
+			found = 0;
+			if (r->allowed_ips != NULL) {
+				for (ipp = r->allowed_ips; ipp; ipp = ipp->next) {
+					if ((ntohl(curr_ip) & ipp->netmask) ==
+					     (ntohl(ipp->addr) & ipp->netmask))
+						found = 1;
+				}
+			} else
+				found = 2;
+			if (!found)
+				return 0;
+
+			if (((mode == GR_SPROLE) && (r->roletype & GR_ROLE_NOPW)) ||
+			    ((mode == GR_SPROLEPAM) && (r->roletype & GR_ROLE_PAM))) {
+				*salt = NULL;
+				*sum = NULL;
+				return 1;
+			}
+		}
+	FOR_EACH_ROLE_END(r)
+
+	for (i = 0; i < polstate->num_sprole_pws; i++) {
+		if (!strcmp(rolename, polstate->acl_special_roles[i]->rolename)) {
+			*salt = polstate->acl_special_roles[i]->salt;
+			*sum = polstate->acl_special_roles[i]->sum;
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+int gr_check_secure_terminal(struct task_struct *task)
+{
+	struct task_struct *p, *p2, *p3;
+	struct files_struct *files;
+	struct fdtable *fdt;
+	struct file *our_file = NULL, *file;
+	int i;
+
+	if (task->signal->tty == NULL)
+		return 1;
+
+	files = get_files_struct(task);
+	if (files != NULL) {
+		rcu_read_lock();
+		fdt = files_fdtable(files);
+		for (i=0; i < fdt->max_fds; i++) {
+			file = fcheck_files(files, i);
+			if (file && (our_file == NULL) && (file->private_data == task->signal->tty)) {
+				get_file(file);
+				our_file = file;
+			}
+		}
+		rcu_read_unlock();
+		put_files_struct(files);
+	}
+
+	if (our_file == NULL)
+		return 1;
+
+	read_lock(&tasklist_lock);
+	do_each_thread(p2, p) {
+		files = get_files_struct(p);
+		if (files == NULL ||
+		    (p->signal && p->signal->tty == task->signal->tty)) {
+			if (files != NULL)
+				put_files_struct(files);
+			continue;
+		}
+		rcu_read_lock();
+		fdt = files_fdtable(files);
+		for (i=0; i < fdt->max_fds; i++) {
+			file = fcheck_files(files, i);
+			if (file && S_ISCHR(file->f_path.dentry->d_inode->i_mode) &&
+			    file->f_path.dentry->d_inode->i_rdev == our_file->f_path.dentry->d_inode->i_rdev) {
+				p3 = task;
+				while (task_pid_nr(p3) > 0) {
+					if (p3 == p)
+						break;
+					p3 = p3->real_parent;
+				}
+				if (p3 == p)
+					break;
+				gr_log_ttysniff(GR_DONT_AUDIT_GOOD, GR_TTYSNIFF_ACL_MSG, p);
+				gr_handle_alertkill(p);
+				rcu_read_unlock();
+				put_files_struct(files);
+				read_unlock(&tasklist_lock);
+				fput(our_file);
+				return 0;
+			}
+		}
+		rcu_read_unlock();
+		put_files_struct(files);
+	} while_each_thread(p2, p);
+	read_unlock(&tasklist_lock);
+
+	fput(our_file);
+	return 1;
+}
+
+ssize_t
+write_grsec_handler(struct file *file, const char __user * buf, size_t count, loff_t *ppos)
+{
+	struct gr_arg_wrapper uwrap;
+	unsigned char *sprole_salt = NULL;
+	unsigned char *sprole_sum = NULL;
+	int error = 0;
+	int error2 = 0;
+	size_t req_count = 0;
+	unsigned char oldmode = 0;
+
+	mutex_lock(&gr_dev_mutex);
+
+	if (gr_acl_is_enabled() && !(current->acl->mode & GR_KERNELAUTH)) {
+		error = -EPERM;
+		goto out;
+	}
+
+#ifdef CONFIG_COMPAT
+	pax_open_kernel();
+	if (is_compat_task()) {
+		copy_gr_arg_wrapper = &copy_gr_arg_wrapper_compat;
+		copy_gr_arg = &copy_gr_arg_compat;
+		copy_acl_object_label = &copy_acl_object_label_compat;
+		copy_acl_subject_label = &copy_acl_subject_label_compat;
+		copy_acl_role_label = &copy_acl_role_label_compat;
+		copy_acl_ip_label = &copy_acl_ip_label_compat;
+		copy_role_allowed_ip = &copy_role_allowed_ip_compat;
+		copy_role_transition = &copy_role_transition_compat;
+		copy_sprole_pw = &copy_sprole_pw_compat;
+		copy_gr_hash_struct = &copy_gr_hash_struct_compat;
+		copy_pointer_from_array = &copy_pointer_from_array_compat;
+		get_gr_arg_wrapper_size = &get_gr_arg_wrapper_size_compat;
+	} else {
+		copy_gr_arg_wrapper = &copy_gr_arg_wrapper_normal;
+		copy_gr_arg = &copy_gr_arg_normal;
+		copy_acl_object_label = &copy_acl_object_label_normal;
+		copy_acl_subject_label = &copy_acl_subject_label_normal;
+		copy_acl_role_label = &copy_acl_role_label_normal;
+		copy_acl_ip_label = &copy_acl_ip_label_normal;
+		copy_role_allowed_ip = &copy_role_allowed_ip_normal;
+		copy_role_transition = &copy_role_transition_normal;
+		copy_sprole_pw = &copy_sprole_pw_normal;
+		copy_gr_hash_struct = &copy_gr_hash_struct_normal;
+		copy_pointer_from_array = &copy_pointer_from_array_normal;
+		get_gr_arg_wrapper_size = &get_gr_arg_wrapper_size_normal;
+	}
+	pax_close_kernel();
+#endif
+
+	req_count = get_gr_arg_wrapper_size();
+
+	if (count != req_count) {
+		gr_log_int_int(GR_DONT_AUDIT_GOOD, GR_DEV_ACL_MSG, (int)count, (int)req_count);
+		error = -EINVAL;
+		goto out;
+	}
+
+	
+	if (gr_auth_expires && time_after_eq(get_seconds(), gr_auth_expires)) {
+		gr_auth_expires = 0;
+		gr_auth_attempts = 0;
+	}
+
+	error = copy_gr_arg_wrapper(buf, &uwrap);
+	if (error)
+		goto out;
+
+	error = copy_gr_arg(uwrap.arg, gr_usermode);
+	if (error)
+		goto out;
+
+	if (gr_usermode->mode != GR_SPROLE && gr_usermode->mode != GR_SPROLEPAM &&
+	    gr_auth_attempts >= CONFIG_GRKERNSEC_ACL_MAXTRIES &&
+	    time_after(gr_auth_expires, get_seconds())) {
+		error = -EBUSY;
+		goto out;
+	}
+
+	/* if non-root trying to do anything other than use a special role,
+	   do not attempt authentication, do not count towards authentication
+	   locking
+	 */
+
+	if (gr_usermode->mode != GR_SPROLE && gr_usermode->mode != GR_STATUS &&
+	    gr_usermode->mode != GR_UNSPROLE && gr_usermode->mode != GR_SPROLEPAM &&
+	    gr_is_global_nonroot(current_uid())) {
+		error = -EPERM;
+		goto out;
+	}
+
+	/* ensure pw and special role name are null terminated */
+
+	gr_usermode->pw[GR_PW_LEN - 1] = '\0';
+	gr_usermode->sp_role[GR_SPROLE_LEN - 1] = '\0';
+
+	/* Okay. 
+	 * We have our enough of the argument structure..(we have yet
+	 * to copy_from_user the tables themselves) . Copy the tables
+	 * only if we need them, i.e. for loading operations. */
+
+	switch (gr_usermode->mode) {
+	case GR_STATUS:
+			if (gr_acl_is_enabled()) {
+				error = 1;
+				if (!gr_check_secure_terminal(current))
+					error = 3;
+			} else
+				error = 2;
+			goto out;
+	case GR_SHUTDOWN:
+		if (gr_acl_is_enabled() && !(chkpw(gr_usermode, gr_system_salt, gr_system_sum))) {
+			stop_machine(gr_rbac_disable, NULL, NULL);
+			free_variables(false);
+			memset(gr_usermode, 0, sizeof(struct gr_arg));
+			memset(gr_system_salt, 0, GR_SALT_LEN);
+			memset(gr_system_sum, 0, GR_SHA_LEN);
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SHUTS_ACL_MSG);
+		} else if (gr_acl_is_enabled()) {
+			gr_log_noargs(GR_DONT_AUDIT, GR_SHUTF_ACL_MSG);
+			error = -EPERM;
+		} else {
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SHUTI_ACL_MSG);
+			error = -EAGAIN;
+		}
+		break;
+	case GR_ENABLE:
+		if (!gr_acl_is_enabled() && !(error2 = gracl_init(gr_usermode)))
+			gr_log_str(GR_DONT_AUDIT_GOOD, GR_ENABLE_ACL_MSG, GR_VERSION);
+		else {
+			if (gr_acl_is_enabled())
+				error = -EAGAIN;
+			else
+				error = error2;
+			gr_log_str(GR_DONT_AUDIT, GR_ENABLEF_ACL_MSG, GR_VERSION);
+		}
+		break;
+	case GR_OLDRELOAD:
+		oldmode = 1;
+	case GR_RELOAD:
+		if (!gr_acl_is_enabled()) {
+			gr_log_str(GR_DONT_AUDIT_GOOD, GR_RELOADI_ACL_MSG, GR_VERSION);
+			error = -EAGAIN;
+		} else if (!(chkpw(gr_usermode, gr_system_salt, gr_system_sum))) {
+			error2 = gracl_reload(gr_usermode, oldmode);
+			if (!error2)
+				gr_log_str(GR_DONT_AUDIT_GOOD, GR_RELOAD_ACL_MSG, GR_VERSION);
+			else {
+				gr_log_str(GR_DONT_AUDIT, GR_RELOADF_ACL_MSG, GR_VERSION);
+				error = error2;
+			}
+		} else {
+			gr_log_str(GR_DONT_AUDIT, GR_RELOADF_ACL_MSG, GR_VERSION);
+			error = -EPERM;
+		}
+		break;
+	case GR_SEGVMOD:
+		if (unlikely(!gr_acl_is_enabled())) {
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SEGVMODI_ACL_MSG);
+			error = -EAGAIN;
+			break;
+		}
+
+		if (!(chkpw(gr_usermode, gr_system_salt, gr_system_sum))) {
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SEGVMODS_ACL_MSG);
+			if (gr_usermode->segv_device && gr_usermode->segv_inode) {
+				struct acl_subject_label *segvacl;
+				segvacl =
+				    lookup_acl_subj_label(gr_usermode->segv_inode,
+							  gr_usermode->segv_device,
+							  current->role);
+				if (segvacl) {
+					segvacl->crashes = 0;
+					segvacl->expires = 0;
+				}
+			} else if (gr_find_uid(gr_usermode->segv_uid) >= 0) {
+				gr_remove_uid(gr_usermode->segv_uid);
+			}
+		} else {
+			gr_log_noargs(GR_DONT_AUDIT, GR_SEGVMODF_ACL_MSG);
+			error = -EPERM;
+		}
+		break;
+	case GR_SPROLE:
+	case GR_SPROLEPAM:
+		if (unlikely(!gr_acl_is_enabled())) {
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SPROLEI_ACL_MSG);
+			error = -EAGAIN;
+			break;
+		}
+
+		if (current->role->expires && time_after_eq(get_seconds(), current->role->expires)) {
+			current->role->expires = 0;
+			current->role->auth_attempts = 0;
+		}
+
+		if (current->role->auth_attempts >= CONFIG_GRKERNSEC_ACL_MAXTRIES &&
+		    time_after(current->role->expires, get_seconds())) {
+			error = -EBUSY;
+			goto out;
+		}
+
+		if (lookup_special_role_auth
+		    (gr_usermode->mode, gr_usermode->sp_role, &sprole_salt, &sprole_sum)
+		    && ((!sprole_salt && !sprole_sum)
+			|| !(chkpw(gr_usermode, sprole_salt, sprole_sum)))) {
+			char *p = "";
+			assign_special_role(gr_usermode->sp_role);
+			read_lock(&tasklist_lock);
+			if (current->real_parent)
+				p = current->real_parent->role->rolename;
+			read_unlock(&tasklist_lock);
+			gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_SPROLES_ACL_MSG,
+					p, acl_sp_role_value);
+		} else {
+			gr_log_str(GR_DONT_AUDIT, GR_SPROLEF_ACL_MSG, gr_usermode->sp_role);
+			error = -EPERM;
+			if(!(current->role->auth_attempts++))
+				current->role->expires = get_seconds() + CONFIG_GRKERNSEC_ACL_TIMEOUT;
+
+			goto out;
+		}
+		break;
+	case GR_UNSPROLE:
+		if (unlikely(!gr_acl_is_enabled())) {
+			gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_UNSPROLEI_ACL_MSG);
+			error = -EAGAIN;
+			break;
+		}
+
+		if (current->role->roletype & GR_ROLE_SPECIAL) {
+			char *p = "";
+			int i = 0;
+
+			read_lock(&tasklist_lock);
+			if (current->real_parent) {
+				p = current->real_parent->role->rolename;
+				i = current->real_parent->acl_role_id;
+			}
+			read_unlock(&tasklist_lock);
+
+			gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_UNSPROLES_ACL_MSG, p, i);
+			gr_set_acls(1);
+		} else {
+			error = -EPERM;
+			goto out;
+		}
+		break;
+	default:
+		gr_log_int(GR_DONT_AUDIT, GR_INVMODE_ACL_MSG, gr_usermode->mode);
+		error = -EINVAL;
+		break;
+	}
+
+	if (error != -EPERM)
+		goto out;
+
+	if(!(gr_auth_attempts++))
+		gr_auth_expires = get_seconds() + CONFIG_GRKERNSEC_ACL_TIMEOUT;
+
+      out:
+	mutex_unlock(&gr_dev_mutex);
+
+	if (!error)
+		error = req_count;
+
+	return error;
+}
+
+int
+gr_set_acls(const int type)
+{
+	struct task_struct *task, *task2;
+	struct acl_role_label *role = current->role;
+	struct acl_subject_label *subj;
+	__u16 acl_role_id = current->acl_role_id;
+	const struct cred *cred;
+	int ret;
+
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+	read_lock(&grsec_exec_file_lock);
+	do_each_thread(task2, task) {
+		/* check to see if we're called from the exit handler,
+		   if so, only replace ACLs that have inherited the admin
+		   ACL */
+
+		if (type && (task->role != role ||
+			     task->acl_role_id != acl_role_id))
+			continue;
+
+		task->acl_role_id = 0;
+		task->acl_sp_role = 0;
+		task->inherited = 0;
+
+		if (task->exec_file) {
+			cred = __task_cred(task);
+			task->role = __lookup_acl_role_label(polstate, task, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid));
+			subj = __gr_get_subject_for_task(polstate, task, NULL);
+			if (subj == NULL) {
+				ret = -EINVAL;
+				read_unlock(&grsec_exec_file_lock);
+				read_unlock(&tasklist_lock);
+				rcu_read_unlock();
+				gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_DEFACL_MSG, task->comm, task_pid_nr(task));
+				return ret;
+			}
+			__gr_apply_subject_to_task(polstate, task, subj);
+		} else {
+			// it's a kernel process
+			task->role = polstate->kernel_role;
+			task->acl = polstate->kernel_role->root_label;
+#ifdef CONFIG_GRKERNSEC_ACL_HIDEKERN
+			task->acl->mode &= ~GR_PROCFIND;
+#endif
+		}
+	} while_each_thread(task2, task);
+	read_unlock(&grsec_exec_file_lock);
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+
+	return 0;
+}
diff --git a/grsecurity/gracl_res.c b/grsecurity/gracl_res.c
new file mode 100644
index 0000000..39645c9
--- /dev/null
+++ b/grsecurity/gracl_res.c
@@ -0,0 +1,68 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/gracl.h>
+#include <linux/grinternal.h>
+
+static const char *restab_log[] = {
+	[RLIMIT_CPU] = "RLIMIT_CPU",
+	[RLIMIT_FSIZE] = "RLIMIT_FSIZE",
+	[RLIMIT_DATA] = "RLIMIT_DATA",
+	[RLIMIT_STACK] = "RLIMIT_STACK",
+	[RLIMIT_CORE] = "RLIMIT_CORE",
+	[RLIMIT_RSS] = "RLIMIT_RSS",
+	[RLIMIT_NPROC] = "RLIMIT_NPROC",
+	[RLIMIT_NOFILE] = "RLIMIT_NOFILE",
+	[RLIMIT_MEMLOCK] = "RLIMIT_MEMLOCK",
+	[RLIMIT_AS] = "RLIMIT_AS",
+	[RLIMIT_LOCKS] = "RLIMIT_LOCKS",
+	[RLIMIT_SIGPENDING] = "RLIMIT_SIGPENDING",
+	[RLIMIT_MSGQUEUE] = "RLIMIT_MSGQUEUE",
+	[RLIMIT_NICE] = "RLIMIT_NICE",
+	[RLIMIT_RTPRIO] = "RLIMIT_RTPRIO",
+	[RLIMIT_RTTIME] = "RLIMIT_RTTIME",
+	[GR_CRASH_RES] = "RLIMIT_CRASH"
+};
+
+void
+gr_log_resource(const struct task_struct *task,
+		const int res, const unsigned long wanted, const int gt)
+{
+	const struct cred *cred;
+	unsigned long rlim;
+
+	if (!gr_acl_is_enabled() && !grsec_resource_logging)
+		return;
+
+	// not yet supported resource
+	if (unlikely(!restab_log[res]))
+		return;
+
+	if (res == RLIMIT_CPU || res == RLIMIT_RTTIME)
+		rlim = task_rlimit_max(task, res);
+	else
+		rlim = task_rlimit(task, res);
+
+	if (likely((rlim == RLIM_INFINITY) || (gt && wanted <= rlim) || (!gt && wanted < rlim)))
+		return;
+
+	rcu_read_lock();
+	cred = __task_cred(task);
+
+	if (res == RLIMIT_NPROC && 
+	    (cap_raised(cred->cap_effective, CAP_SYS_ADMIN) || 
+	     cap_raised(cred->cap_effective, CAP_SYS_RESOURCE)))
+		goto out_rcu_unlock;
+	else if (res == RLIMIT_MEMLOCK &&
+		 cap_raised(cred->cap_effective, CAP_IPC_LOCK))
+		goto out_rcu_unlock;
+	else if (res == RLIMIT_NICE && cap_raised(cred->cap_effective, CAP_SYS_NICE))
+		goto out_rcu_unlock;
+	rcu_read_unlock();
+
+	gr_log_res_ulong2_str(GR_DONT_AUDIT, GR_RESOURCE_MSG, task, wanted, restab_log[res], rlim);
+
+	return;
+out_rcu_unlock:
+	rcu_read_unlock();
+	return;
+}
diff --git a/grsecurity/gracl_segv.c b/grsecurity/gracl_segv.c
new file mode 100644
index 0000000..2040e61
--- /dev/null
+++ b/grsecurity/gracl_segv.c
@@ -0,0 +1,313 @@
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <asm/uaccess.h>
+#include <asm/errno.h>
+#include <asm/mman.h>
+#include <net/sock.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/net.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/gracl.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
+#include <linux/magic.h>
+#include <linux/pagemap.h>
+#include "../fs/btrfs/async-thread.h"
+#include "../fs/btrfs/ctree.h"
+#include "../fs/btrfs/btrfs_inode.h"
+#endif
+
+static struct crash_uid *uid_set;
+static unsigned short uid_used;
+static DEFINE_SPINLOCK(gr_uid_lock);
+extern rwlock_t gr_inode_lock;
+extern struct acl_subject_label *
+	lookup_acl_subj_label(const ino_t inode, const dev_t dev,
+			      struct acl_role_label *role);
+
+static inline dev_t __get_dev(const struct dentry *dentry)
+{
+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
+	if (dentry->d_sb->s_magic == BTRFS_SUPER_MAGIC)
+		return BTRFS_I(dentry->d_inode)->root->anon_dev;
+	else
+#endif
+		return dentry->d_sb->s_dev;
+}
+
+int
+gr_init_uidset(void)
+{
+	uid_set =
+	    kmalloc(GR_UIDTABLE_MAX * sizeof (struct crash_uid), GFP_KERNEL);
+	uid_used = 0;
+
+	return uid_set ? 1 : 0;
+}
+
+void
+gr_free_uidset(void)
+{
+	if (uid_set) {
+		struct crash_uid *tmpset;
+		spin_lock(&gr_uid_lock);
+		tmpset = uid_set;
+		uid_set = NULL;
+		uid_used = 0;
+		spin_unlock(&gr_uid_lock);
+		if (tmpset)
+			kfree(tmpset);
+	}
+
+	return;
+}
+
+int
+gr_find_uid(const uid_t uid)
+{
+	struct crash_uid *tmp = uid_set;
+	uid_t buid;
+	int low = 0, high = uid_used - 1, mid;
+
+	while (high >= low) {
+		mid = (low + high) >> 1;
+		buid = tmp[mid].uid;
+		if (buid == uid)
+			return mid;
+		if (buid > uid)
+			high = mid - 1;
+		if (buid < uid)
+			low = mid + 1;
+	}
+
+	return -1;
+}
+
+static __inline__ void
+gr_insertsort(void)
+{
+	unsigned short i, j;
+	struct crash_uid index;
+
+	for (i = 1; i < uid_used; i++) {
+		index = uid_set[i];
+		j = i;
+		while ((j > 0) && uid_set[j - 1].uid > index.uid) {
+			uid_set[j] = uid_set[j - 1];
+			j--;
+		}
+		uid_set[j] = index;
+	}
+
+	return;
+}
+
+static __inline__ void
+gr_insert_uid(const kuid_t kuid, const unsigned long expires)
+{
+	int loc;
+	uid_t uid = GR_GLOBAL_UID(kuid);
+
+	if (uid_used == GR_UIDTABLE_MAX)
+		return;
+
+	loc = gr_find_uid(uid);
+
+	if (loc >= 0) {
+		uid_set[loc].expires = expires;
+		return;
+	}
+
+	uid_set[uid_used].uid = uid;
+	uid_set[uid_used].expires = expires;
+	uid_used++;
+
+	gr_insertsort();
+
+	return;
+}
+
+void
+gr_remove_uid(const unsigned short loc)
+{
+	unsigned short i;
+
+	for (i = loc + 1; i < uid_used; i++)
+		uid_set[i - 1] = uid_set[i];
+
+	uid_used--;
+
+	return;
+}
+
+int
+gr_check_crash_uid(const kuid_t kuid)
+{
+	int loc;
+	int ret = 0;
+	uid_t uid;
+
+	if (unlikely(!gr_acl_is_enabled()))
+		return 0;
+
+	uid = GR_GLOBAL_UID(kuid);
+
+	spin_lock(&gr_uid_lock);
+	loc = gr_find_uid(uid);
+
+	if (loc < 0)
+		goto out_unlock;
+
+	if (time_before_eq(uid_set[loc].expires, get_seconds()))
+		gr_remove_uid(loc);
+	else
+		ret = 1;
+
+out_unlock:
+	spin_unlock(&gr_uid_lock);
+	return ret;
+}
+
+static __inline__ int
+proc_is_setxid(const struct cred *cred)
+{
+	if (!uid_eq(cred->uid, cred->euid) || !uid_eq(cred->uid, cred->suid) ||
+	    !uid_eq(cred->uid, cred->fsuid))
+		return 1;
+	if (!gid_eq(cred->gid, cred->egid) || !gid_eq(cred->gid, cred->sgid) ||
+	    !gid_eq(cred->gid, cred->fsgid))
+		return 1;
+
+	return 0;
+}
+
+extern int gr_fake_force_sig(int sig, struct task_struct *t);
+
+void
+gr_handle_crash(struct task_struct *task, const int sig)
+{
+	struct acl_subject_label *curr;
+	struct task_struct *tsk, *tsk2;
+	const struct cred *cred;
+	const struct cred *cred2;
+
+	if (sig != SIGSEGV && sig != SIGKILL && sig != SIGBUS && sig != SIGILL)
+		return;
+
+	if (unlikely(!gr_acl_is_enabled()))
+		return;
+
+	curr = task->acl;
+
+	if (!(curr->resmask & (1U << GR_CRASH_RES)))
+		return;
+
+	if (time_before_eq(curr->expires, get_seconds())) {
+		curr->expires = 0;
+		curr->crashes = 0;
+	}
+
+	curr->crashes++;
+
+	if (!curr->expires)
+		curr->expires = get_seconds() + curr->res[GR_CRASH_RES].rlim_max;
+
+	if ((curr->crashes >= curr->res[GR_CRASH_RES].rlim_cur) &&
+	    time_after(curr->expires, get_seconds())) {
+		rcu_read_lock();
+		cred = __task_cred(task);
+		if (gr_is_global_nonroot(cred->uid) && proc_is_setxid(cred)) {
+			gr_log_crash1(GR_DONT_AUDIT, GR_SEGVSTART_ACL_MSG, task, curr->res[GR_CRASH_RES].rlim_max);
+			spin_lock(&gr_uid_lock);
+			gr_insert_uid(cred->uid, curr->expires);
+			spin_unlock(&gr_uid_lock);
+			curr->expires = 0;
+			curr->crashes = 0;
+			read_lock(&tasklist_lock);
+			do_each_thread(tsk2, tsk) {
+				cred2 = __task_cred(tsk);
+				if (tsk != task && uid_eq(cred2->uid, cred->uid))
+					gr_fake_force_sig(SIGKILL, tsk);
+			} while_each_thread(tsk2, tsk);
+			read_unlock(&tasklist_lock);
+		} else {
+			gr_log_crash2(GR_DONT_AUDIT, GR_SEGVNOSUID_ACL_MSG, task, curr->res[GR_CRASH_RES].rlim_max);
+			read_lock(&tasklist_lock);
+			read_lock(&grsec_exec_file_lock);
+			do_each_thread(tsk2, tsk) {
+				if (likely(tsk != task)) {
+					// if this thread has the same subject as the one that triggered
+					// RES_CRASH and it's the same binary, kill it
+					if (tsk->acl == task->acl && gr_is_same_file(tsk->exec_file, task->exec_file))
+						gr_fake_force_sig(SIGKILL, tsk);
+				}
+			} while_each_thread(tsk2, tsk);
+			read_unlock(&grsec_exec_file_lock);
+			read_unlock(&tasklist_lock);
+		}
+		rcu_read_unlock();
+	}
+
+	return;
+}
+
+int
+gr_check_crash_exec(const struct file *filp)
+{
+	struct acl_subject_label *curr;
+
+	if (unlikely(!gr_acl_is_enabled()))
+		return 0;
+
+	read_lock(&gr_inode_lock);
+	curr = lookup_acl_subj_label(filp->f_path.dentry->d_inode->i_ino,
+				     __get_dev(filp->f_path.dentry),
+				     current->role);
+	read_unlock(&gr_inode_lock);
+
+	if (!curr || !(curr->resmask & (1U << GR_CRASH_RES)) ||
+	    (!curr->crashes && !curr->expires))
+		return 0;
+
+	if ((curr->crashes >= curr->res[GR_CRASH_RES].rlim_cur) &&
+	    time_after(curr->expires, get_seconds()))
+		return 1;
+	else if (time_before_eq(curr->expires, get_seconds())) {
+		curr->crashes = 0;
+		curr->expires = 0;
+	}
+
+	return 0;
+}
+
+void
+gr_handle_alertkill(struct task_struct *task)
+{
+	struct acl_subject_label *curracl;
+	__u32 curr_ip;
+	struct task_struct *p, *p2;
+
+	if (unlikely(!gr_acl_is_enabled()))
+		return;
+
+	curracl = task->acl;
+	curr_ip = task->signal->curr_ip;
+
+	if ((curracl->mode & GR_KILLIPPROC) && curr_ip) {
+		read_lock(&tasklist_lock);
+		do_each_thread(p2, p) {
+			if (p->signal->curr_ip == curr_ip)
+				gr_fake_force_sig(SIGKILL, p);
+		} while_each_thread(p2, p);
+		read_unlock(&tasklist_lock);
+	} else if (curracl->mode & GR_KILLPROC)
+		gr_fake_force_sig(SIGKILL, task);
+
+	return;
+}
diff --git a/grsecurity/gracl_shm.c b/grsecurity/gracl_shm.c
new file mode 100644
index 0000000..98011b0
--- /dev/null
+++ b/grsecurity/gracl_shm.c
@@ -0,0 +1,40 @@
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/ipc.h>
+#include <linux/gracl.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+int
+gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
+		const time_t shm_createtime, const kuid_t cuid, const int shmid)
+{
+	struct task_struct *task;
+
+	if (!gr_acl_is_enabled())
+		return 1;
+
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+
+	task = find_task_by_vpid(shm_cprid);
+
+	if (unlikely(!task))
+		task = find_task_by_vpid(shm_lapid);
+
+	if (unlikely(task && (time_before_eq((unsigned long)task->start_time.tv_sec, (unsigned long)shm_createtime) ||
+			      (task_pid_nr(task) == shm_lapid)) &&
+		     (task->acl->mode & GR_PROTSHM) &&
+		     (task->acl != current->acl))) {
+		read_unlock(&tasklist_lock);
+		rcu_read_unlock();
+		gr_log_int3(GR_DONT_AUDIT, GR_SHMAT_ACL_MSG, GR_GLOBAL_UID(cuid), shm_cprid, shmid);
+		return 0;
+	}
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+
+	return 1;
+}
diff --git a/grsecurity/grsec_chdir.c b/grsecurity/grsec_chdir.c
new file mode 100644
index 0000000..bc0be01
--- /dev/null
+++ b/grsecurity/grsec_chdir.c
@@ -0,0 +1,19 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+void
+gr_log_chdir(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR
+	if ((grsec_enable_chdir && grsec_enable_group &&
+	     in_group_p(grsec_audit_gid)) || (grsec_enable_chdir &&
+					      !grsec_enable_group)) {
+		gr_log_fs_generic(GR_DO_AUDIT, GR_CHDIR_AUDIT_MSG, dentry, mnt);
+	}
+#endif
+	return;
+}
diff --git a/grsecurity/grsec_chroot.c b/grsecurity/grsec_chroot.c
new file mode 100644
index 0000000..baa635c
--- /dev/null
+++ b/grsecurity/grsec_chroot.c
@@ -0,0 +1,387 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/types.h>
+#include "../fs/mount.h"
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
+int gr_init_ran;
+#endif
+
+void gr_set_chroot_entries(struct task_struct *task, const struct path *path)
+{
+#ifdef CONFIG_GRKERNSEC
+	if (task_pid_nr(task) > 1 && path->dentry != init_task.fs->root.dentry &&
+	    		     path->dentry != task->nsproxy->mnt_ns->root->mnt.mnt_root
+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
+			     && gr_init_ran
+#endif
+	   )
+		task->gr_is_chrooted = 1;
+	else {
+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
+		if (task_pid_nr(task) == 1 && !gr_init_ran)
+			gr_init_ran = 1;
+#endif
+		task->gr_is_chrooted = 0;
+	}
+
+	task->gr_chroot_dentry = path->dentry;
+#endif
+	return;
+}
+
+void gr_clear_chroot_entries(struct task_struct *task)
+{
+#ifdef CONFIG_GRKERNSEC
+	task->gr_is_chrooted = 0;
+	task->gr_chroot_dentry = NULL;
+#endif
+	return;
+}	
+
+int
+gr_handle_chroot_unix(const pid_t pid)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX
+	struct task_struct *p;
+
+	if (unlikely(!grsec_enable_chroot_unix))
+		return 1;
+
+	if (likely(!proc_is_chrooted(current)))
+		return 1;
+
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+	p = find_task_by_vpid_unrestricted(pid);
+	if (unlikely(p && !have_same_root(current, p))) {
+		read_unlock(&tasklist_lock);
+		rcu_read_unlock();
+		gr_log_noargs(GR_DONT_AUDIT, GR_UNIX_CHROOT_MSG);
+		return 0;
+	}
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+#endif
+	return 1;
+}
+
+int
+gr_handle_chroot_nice(void)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
+	if (grsec_enable_chroot_nice && proc_is_chrooted(current)) {
+		gr_log_noargs(GR_DONT_AUDIT, GR_NICE_CHROOT_MSG);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_chroot_setpriority(struct task_struct *p, const int niceval)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
+	if (grsec_enable_chroot_nice && (niceval < task_nice(p))
+			&& proc_is_chrooted(current)) {
+		gr_log_str_int(GR_DONT_AUDIT, GR_PRIORITY_CHROOT_MSG, p->comm, task_pid_nr(p));
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_chroot_fowner(struct pid *pid, enum pid_type type)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
+	struct task_struct *p;
+	int ret = 0;
+	if (!grsec_enable_chroot_findtask || !proc_is_chrooted(current) || !pid)
+		return ret;
+
+	read_lock(&tasklist_lock);
+	do_each_pid_task(pid, type, p) {
+		if (!have_same_root(current, p)) {
+			ret = 1;
+			goto out;
+		}
+	} while_each_pid_task(pid, type, p);
+out:
+	read_unlock(&tasklist_lock);
+	return ret;
+#endif
+	return 0;
+}
+
+int
+gr_pid_is_chrooted(struct task_struct *p)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
+	if (!grsec_enable_chroot_findtask || !proc_is_chrooted(current) || p == NULL)
+		return 0;
+
+	if ((p->exit_state & (EXIT_ZOMBIE | EXIT_DEAD)) ||
+	    !have_same_root(current, p)) {
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+EXPORT_SYMBOL_GPL(gr_pid_is_chrooted);
+
+#if defined(CONFIG_GRKERNSEC_CHROOT_DOUBLE) || defined(CONFIG_GRKERNSEC_CHROOT_FCHDIR)
+int gr_is_outside_chroot(const struct dentry *u_dentry, const struct vfsmount *u_mnt)
+{
+	struct path path, currentroot;
+	int ret = 0;
+
+	path.dentry = (struct dentry *)u_dentry;
+	path.mnt = (struct vfsmount *)u_mnt;
+	get_fs_root(current->fs, &currentroot);
+	if (path_is_under(&path, &currentroot))
+		ret = 1;
+	path_put(&currentroot);
+
+	return ret;
+}
+#endif
+
+int
+gr_chroot_fchdir(struct dentry *u_dentry, struct vfsmount *u_mnt)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
+	if (!grsec_enable_chroot_fchdir)
+		return 1;
+
+	if (!proc_is_chrooted(current))
+		return 1;
+	else if (!gr_is_outside_chroot(u_dentry, u_mnt)) {
+		gr_log_fs_generic(GR_DONT_AUDIT, GR_CHROOT_FCHDIR_MSG, u_dentry, u_mnt);
+		return 0;
+	}
+#endif
+	return 1;
+}
+
+int
+gr_chroot_fhandle(void)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
+	if (!grsec_enable_chroot_fchdir)
+		return 1;
+
+	if (!proc_is_chrooted(current))
+		return 1;
+	else {
+		gr_log_noargs(GR_DONT_AUDIT, GR_CHROOT_FHANDLE_MSG);
+		return 0;
+	}
+#endif
+	return 1;
+}
+
+int
+gr_chroot_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
+		const time_t shm_createtime)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT
+	struct task_struct *p;
+	time_t starttime;
+
+	if (unlikely(!grsec_enable_chroot_shmat))
+		return 1;
+
+	if (likely(!proc_is_chrooted(current)))
+		return 1;
+
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+
+	if ((p = find_task_by_vpid_unrestricted(shm_cprid))) {
+		starttime = p->start_time.tv_sec;
+		if (time_before_eq((unsigned long)starttime, (unsigned long)shm_createtime)) {
+			if (have_same_root(current, p)) {
+				goto allow;
+			} else {
+				read_unlock(&tasklist_lock);
+				rcu_read_unlock();
+				gr_log_noargs(GR_DONT_AUDIT, GR_SHMAT_CHROOT_MSG);
+				return 0;
+			}
+		}
+		/* creator exited, pid reuse, fall through to next check */
+	}
+	if ((p = find_task_by_vpid_unrestricted(shm_lapid))) {
+		if (unlikely(!have_same_root(current, p))) {
+			read_unlock(&tasklist_lock);
+			rcu_read_unlock();
+			gr_log_noargs(GR_DONT_AUDIT, GR_SHMAT_CHROOT_MSG);
+			return 0;
+		}
+	}
+
+allow:
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+#endif
+	return 1;
+}
+
+void
+gr_log_chroot_exec(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG
+	if (grsec_enable_chroot_execlog && proc_is_chrooted(current))
+		gr_log_fs_generic(GR_DO_AUDIT, GR_EXEC_CHROOT_MSG, dentry, mnt);
+#endif
+	return;
+}
+
+int
+gr_handle_chroot_mknod(const struct dentry *dentry,
+		       const struct vfsmount *mnt, const int mode)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD
+	if (grsec_enable_chroot_mknod && !S_ISFIFO(mode) && !S_ISREG(mode) && 
+	    proc_is_chrooted(current)) {
+		gr_log_fs_generic(GR_DONT_AUDIT, GR_MKNOD_CHROOT_MSG, dentry, mnt);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_chroot_mount(const struct dentry *dentry,
+		       const struct vfsmount *mnt, const char *dev_name)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT
+	if (grsec_enable_chroot_mount && proc_is_chrooted(current)) {
+		gr_log_str_fs(GR_DONT_AUDIT, GR_MOUNT_CHROOT_MSG, dev_name ? dev_name : "none", dentry, mnt);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_chroot_pivot(void)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT
+	if (grsec_enable_chroot_pivot && proc_is_chrooted(current)) {
+		gr_log_noargs(GR_DONT_AUDIT, GR_PIVOT_CHROOT_MSG);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_chroot_chroot(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE
+	if (grsec_enable_chroot_double && proc_is_chrooted(current) &&
+	    !gr_is_outside_chroot(dentry, mnt)) {
+		gr_log_fs_generic(GR_DONT_AUDIT, GR_CHROOT_CHROOT_MSG, dentry, mnt);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
+
+extern const char *captab_log[];
+extern int captab_log_entries;
+
+int
+gr_task_chroot_is_capable(const struct task_struct *task, const struct cred *cred, const int cap)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	if (grsec_enable_chroot_caps && proc_is_chrooted(task)) {
+		kernel_cap_t chroot_caps = GR_CHROOT_CAPS;
+		if (cap_raised(chroot_caps, cap)) {
+			if (cap_raised(cred->cap_effective, cap) && cap < captab_log_entries) {
+				gr_log_cap(GR_DONT_AUDIT, GR_CAP_CHROOT_MSG, task, captab_log[cap]);
+			}
+			return 0;
+		}
+	}
+#endif
+	return 1;
+}
+
+int
+gr_chroot_is_capable(const int cap)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	return gr_task_chroot_is_capable(current, current_cred(), cap);
+#endif
+	return 1;
+}
+
+int
+gr_task_chroot_is_capable_nolog(const struct task_struct *task, const int cap)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	if (grsec_enable_chroot_caps && proc_is_chrooted(task)) {
+		kernel_cap_t chroot_caps = GR_CHROOT_CAPS;
+		if (cap_raised(chroot_caps, cap)) {
+			return 0;
+		}
+	}
+#endif
+	return 1;
+}
+
+int
+gr_chroot_is_capable_nolog(const int cap)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	return gr_task_chroot_is_capable_nolog(current, cap);
+#endif
+	return 1;
+}
+
+int
+gr_handle_chroot_sysctl(const int op)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL
+	if (grsec_enable_chroot_sysctl && (op & MAY_WRITE) &&
+	    proc_is_chrooted(current))
+		return -EACCES;
+#endif
+	return 0;
+}
+
+void
+gr_handle_chroot_chdir(const struct path *path)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR
+	if (grsec_enable_chroot_chdir)
+		set_fs_pwd(current->fs, path);
+#endif
+	return;
+}
+
+int
+gr_handle_chroot_chmod(const struct dentry *dentry,
+		       const struct vfsmount *mnt, const int mode)
+{
+#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD
+	/* allow chmod +s on directories, but not files */
+	if (grsec_enable_chroot_chmod && !S_ISDIR(dentry->d_inode->i_mode) &&
+	    ((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))) &&
+	    proc_is_chrooted(current)) {
+		gr_log_fs_generic(GR_DONT_AUDIT, GR_CHMOD_CHROOT_MSG, dentry, mnt);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_disabled.c b/grsecurity/grsec_disabled.c
new file mode 100644
index 0000000..2d3bcb7
--- /dev/null
+++ b/grsecurity/grsec_disabled.c
@@ -0,0 +1,440 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/kdev_t.h>
+#include <linux/net.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+#include <linux/sysctl.h>
+
+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
+void
+pax_set_initial_flags(struct linux_binprm *bprm)
+{
+	return;
+}
+#endif
+
+#ifdef CONFIG_SYSCTL
+__u32
+gr_handle_sysctl(const struct ctl_table * table, const int op)
+{
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_TASKSTATS
+int gr_is_taskstats_denied(int pid)
+{
+	return 0;
+}
+#endif
+
+int
+gr_acl_is_enabled(void)
+{
+	return 0;
+}
+
+int
+gr_learn_cap(const struct task_struct *task, const struct cred *cred, const int cap)
+{
+	return 0;
+}
+
+void
+gr_handle_proc_create(const struct dentry *dentry, const struct inode *inode) 
+{
+	return;
+}
+
+int
+gr_handle_rawio(const struct inode *inode)
+{
+	return 0;
+}
+
+void
+gr_acl_handle_psacct(struct task_struct *task, const long code)
+{
+	return;
+}
+
+int
+gr_handle_ptrace(struct task_struct *task, const long request)
+{
+	return 0;
+}
+
+int
+gr_handle_proc_ptrace(struct task_struct *task)
+{
+	return 0;
+}
+
+int
+gr_set_acls(const int type)
+{
+	return 0;
+}
+
+int
+gr_check_hidden_task(const struct task_struct *tsk)
+{
+	return 0;
+}
+
+int
+gr_check_protected_task(const struct task_struct *task)
+{
+	return 0;
+}
+
+int
+gr_check_protected_task_fowner(struct pid *pid, enum pid_type type)
+{
+	return 0;
+}
+
+void
+gr_copy_label(struct task_struct *tsk)
+{
+	return;
+}
+
+void
+gr_set_pax_flags(struct task_struct *task)
+{
+	return;
+}
+
+int
+gr_set_proc_label(const struct dentry *dentry, const struct vfsmount *mnt,
+		  const int unsafe_share)
+{
+	return 0;
+}
+
+void
+gr_handle_delete(const ino_t ino, const dev_t dev)
+{
+	return;
+}
+
+void
+gr_handle_create(const struct dentry *dentry, const struct vfsmount *mnt)
+{
+	return;
+}
+
+void
+gr_handle_crash(struct task_struct *task, const int sig)
+{
+	return;
+}
+
+int
+gr_check_crash_exec(const struct file *filp)
+{
+	return 0;
+}
+
+int
+gr_check_crash_uid(const kuid_t uid)
+{
+	return 0;
+}
+
+void
+gr_handle_rename(struct inode *old_dir, struct inode *new_dir,
+		 struct dentry *old_dentry,
+		 struct dentry *new_dentry,
+		 struct vfsmount *mnt, const __u8 replace, unsigned int flags)
+{
+	return;
+}
+
+int
+gr_search_socket(const int family, const int type, const int protocol)
+{
+	return 1;
+}
+
+int
+gr_search_connectbind(const int mode, const struct socket *sock,
+		      const struct sockaddr_in *addr)
+{
+	return 0;
+}
+
+void
+gr_handle_alertkill(struct task_struct *task)
+{
+	return;
+}
+
+__u32
+gr_acl_handle_execve(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_hidden_file(const struct dentry * dentry,
+			  const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_open(const struct dentry * dentry, const struct vfsmount * mnt,
+		   int acc_mode)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_rmdir(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_unlink(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+int
+gr_acl_handle_mmap(const struct file *file, const unsigned long prot,
+		   unsigned int *vm_flags)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_truncate(const struct dentry * dentry,
+		       const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_utime(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_access(const struct dentry * dentry,
+		     const struct vfsmount * mnt, const int fmode)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_chmod(const struct dentry * dentry, const struct vfsmount * mnt,
+		    umode_t *mode)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_chown(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_setxattr(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_removexattr(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+void
+grsecurity_init(void)
+{
+	return;
+}
+
+umode_t gr_acl_umask(void)
+{
+	return 0;
+}
+
+__u32
+gr_acl_handle_mknod(const struct dentry * new_dentry,
+		    const struct dentry * parent_dentry,
+		    const struct vfsmount * parent_mnt,
+		    const int mode)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_mkdir(const struct dentry * new_dentry,
+		    const struct dentry * parent_dentry,
+		    const struct vfsmount * parent_mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_symlink(const struct dentry * new_dentry,
+		      const struct dentry * parent_dentry,
+		      const struct vfsmount * parent_mnt, const struct filename *from)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_link(const struct dentry * new_dentry,
+		   const struct dentry * parent_dentry,
+		   const struct vfsmount * parent_mnt,
+		   const struct dentry * old_dentry,
+		   const struct vfsmount * old_mnt, const struct filename *to)
+{
+	return 1;
+}
+
+int
+gr_acl_handle_rename(const struct dentry *new_dentry,
+		     const struct dentry *parent_dentry,
+		     const struct vfsmount *parent_mnt,
+		     const struct dentry *old_dentry,
+		     const struct inode *old_parent_inode,
+		     const struct vfsmount *old_mnt, const struct filename *newname,
+		     unsigned int flags)
+{
+	return 0;
+}
+
+int
+gr_acl_handle_filldir(const struct file *file, const char *name,
+		      const int namelen, const ino_t ino)
+{
+	return 1;
+}
+
+int
+gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
+		const time_t shm_createtime, const kuid_t cuid, const int shmid)
+{
+	return 1;
+}
+
+int
+gr_search_bind(const struct socket *sock, const struct sockaddr_in *addr)
+{
+	return 0;
+}
+
+int
+gr_search_accept(const struct socket *sock)
+{
+	return 0;
+}
+
+int
+gr_search_listen(const struct socket *sock)
+{
+	return 0;
+}
+
+int
+gr_search_connect(const struct socket *sock, const struct sockaddr_in *addr)
+{
+	return 0;
+}
+
+__u32
+gr_acl_handle_unix(const struct dentry * dentry, const struct vfsmount * mnt)
+{
+	return 1;
+}
+
+__u32
+gr_acl_handle_creat(const struct dentry * dentry,
+		    const struct dentry * p_dentry,
+		    const struct vfsmount * p_mnt, int open_flags, int acc_mode,
+		    const int imode)
+{
+	return 1;
+}
+
+void
+gr_acl_handle_exit(void)
+{
+	return;
+}
+
+int
+gr_acl_handle_mprotect(const struct file *file, const unsigned long prot)
+{
+	return 1;
+}
+
+void
+gr_set_role_label(const kuid_t uid, const kgid_t gid)
+{
+	return;
+}
+
+int
+gr_acl_handle_procpidmem(const struct task_struct *task)
+{
+	return 0;
+}
+
+int
+gr_search_udp_recvmsg(const struct sock *sk, const struct sk_buff *skb)
+{
+	return 0;
+}
+
+int
+gr_search_udp_sendmsg(const struct sock *sk, const struct sockaddr_in *addr)
+{
+	return 0;
+}
+
+int
+gr_check_user_change(kuid_t real, kuid_t effective, kuid_t fs)
+{
+	return 0;
+}
+
+int
+gr_check_group_change(kgid_t real, kgid_t effective, kgid_t fs)
+{
+	return 0;
+}
+
+int gr_acl_enable_at_secure(void)
+{
+	return 0;
+}
+
+dev_t gr_get_dev_from_dentry(struct dentry *dentry)
+{
+	return dentry->d_sb->s_dev;
+}
+
+void gr_put_exec_file(struct task_struct *task)
+{
+	return;
+}
+
+#ifdef CONFIG_SECURITY
+EXPORT_SYMBOL_GPL(gr_check_user_change);
+EXPORT_SYMBOL_GPL(gr_check_group_change);
+#endif
diff --git a/grsecurity/grsec_exec.c b/grsecurity/grsec_exec.c
new file mode 100644
index 0000000..14638ff
--- /dev/null
+++ b/grsecurity/grsec_exec.c
@@ -0,0 +1,188 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/binfmts.h>
+#include <linux/fs.h>
+#include <linux/types.h>
+#include <linux/grdefs.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+#include <linux/capability.h>
+#include <linux/module.h>
+#include <linux/compat.h>
+
+#include <asm/uaccess.h>
+
+#ifdef CONFIG_GRKERNSEC_EXECLOG
+static char gr_exec_arg_buf[132];
+static DEFINE_MUTEX(gr_exec_arg_mutex);
+#endif
+
+struct user_arg_ptr {
+#ifdef CONFIG_COMPAT
+	bool is_compat;
+#endif
+	union {
+		const char __user *const __user *native;
+#ifdef CONFIG_COMPAT
+		const compat_uptr_t __user *compat;
+#endif
+	} ptr;
+};
+
+extern const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr);
+
+void
+gr_handle_exec_args(struct linux_binprm *bprm, struct user_arg_ptr argv)
+{
+#ifdef CONFIG_GRKERNSEC_EXECLOG
+	char *grarg = gr_exec_arg_buf;
+	unsigned int i, x, execlen = 0;
+	char c;
+
+	if (!((grsec_enable_execlog && grsec_enable_group &&
+	       in_group_p(grsec_audit_gid))
+	      || (grsec_enable_execlog && !grsec_enable_group)))
+		return;
+
+	mutex_lock(&gr_exec_arg_mutex);
+	memset(grarg, 0, sizeof(gr_exec_arg_buf));
+
+	for (i = 0; i < bprm->argc && execlen < 128; i++) {
+		const char __user *p;
+		unsigned int len;
+
+		p = get_user_arg_ptr(argv, i);
+		if (IS_ERR(p))
+			goto log;
+
+		len = strnlen_user(p, 128 - execlen);
+		if (len > 128 - execlen)
+			len = 128 - execlen;
+		else if (len > 0)
+			len--;
+		if (copy_from_user(grarg + execlen, p, len))
+			goto log;
+
+		/* rewrite unprintable characters */
+		for (x = 0; x < len; x++) {
+			c = *(grarg + execlen + x);
+			if (c < 32 || c > 126)
+				*(grarg + execlen + x) = ' ';
+		}
+
+		execlen += len;
+		*(grarg + execlen) = ' ';
+		*(grarg + execlen + 1) = '\0';
+		execlen++;
+	}
+
+      log:
+	gr_log_fs_str(GR_DO_AUDIT, GR_EXEC_AUDIT_MSG, bprm->file->f_path.dentry,
+			bprm->file->f_path.mnt, grarg);
+	mutex_unlock(&gr_exec_arg_mutex);
+#endif
+	return;
+}
+
+#ifdef CONFIG_GRKERNSEC
+extern int gr_acl_is_capable(const int cap);
+extern int gr_acl_is_capable_nolog(const int cap);
+extern int gr_task_acl_is_capable(const struct task_struct *task, const struct cred *cred, const int cap);
+extern int gr_task_acl_is_capable_nolog(const struct task_struct *task, const int cap);
+extern int gr_chroot_is_capable(const int cap);
+extern int gr_chroot_is_capable_nolog(const int cap);
+extern int gr_task_chroot_is_capable(const struct task_struct *task, const struct cred *cred, const int cap);
+extern int gr_task_chroot_is_capable_nolog(const struct task_struct *task, const int cap);
+#endif
+
+const char *captab_log[] = {
+	"CAP_CHOWN",
+	"CAP_DAC_OVERRIDE",
+	"CAP_DAC_READ_SEARCH",
+	"CAP_FOWNER",
+	"CAP_FSETID",
+	"CAP_KILL",
+	"CAP_SETGID",
+	"CAP_SETUID",
+	"CAP_SETPCAP",
+	"CAP_LINUX_IMMUTABLE",
+	"CAP_NET_BIND_SERVICE",
+	"CAP_NET_BROADCAST",
+	"CAP_NET_ADMIN",
+	"CAP_NET_RAW",
+	"CAP_IPC_LOCK",
+	"CAP_IPC_OWNER",
+	"CAP_SYS_MODULE",
+	"CAP_SYS_RAWIO",
+	"CAP_SYS_CHROOT",
+	"CAP_SYS_PTRACE",
+	"CAP_SYS_PACCT",
+	"CAP_SYS_ADMIN",
+	"CAP_SYS_BOOT",
+	"CAP_SYS_NICE",
+	"CAP_SYS_RESOURCE",
+	"CAP_SYS_TIME",
+	"CAP_SYS_TTY_CONFIG",
+	"CAP_MKNOD",
+	"CAP_LEASE",
+	"CAP_AUDIT_WRITE",
+	"CAP_AUDIT_CONTROL",
+	"CAP_SETFCAP",
+	"CAP_MAC_OVERRIDE",
+	"CAP_MAC_ADMIN",
+	"CAP_SYSLOG",
+	"CAP_WAKE_ALARM",
+	"CAP_BLOCK_SUSPEND"
+};
+
+int captab_log_entries = sizeof(captab_log)/sizeof(captab_log[0]);
+
+int gr_is_capable(const int cap)
+{
+#ifdef CONFIG_GRKERNSEC
+	if (gr_acl_is_capable(cap) && gr_chroot_is_capable(cap))
+		return 1;
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+int gr_task_is_capable(const struct task_struct *task, const struct cred *cred, const int cap)
+{
+#ifdef CONFIG_GRKERNSEC
+	if (gr_task_acl_is_capable(task, cred, cap) && gr_task_chroot_is_capable(task, cred, cap))
+		return 1;
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+int gr_is_capable_nolog(const int cap)
+{
+#ifdef CONFIG_GRKERNSEC
+	if (gr_acl_is_capable_nolog(cap) && gr_chroot_is_capable_nolog(cap))
+		return 1;
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+int gr_task_is_capable_nolog(const struct task_struct *task, const int cap)
+{
+#ifdef CONFIG_GRKERNSEC
+	if (gr_task_acl_is_capable_nolog(task, cap) && gr_task_chroot_is_capable_nolog(task, cap))
+		return 1;
+	return 0;
+#else
+	return 1;
+#endif
+}
+
+EXPORT_SYMBOL_GPL(gr_is_capable);
+EXPORT_SYMBOL_GPL(gr_is_capable_nolog);
+EXPORT_SYMBOL_GPL(gr_task_is_capable);
+EXPORT_SYMBOL_GPL(gr_task_is_capable_nolog);
diff --git a/grsecurity/grsec_fifo.c b/grsecurity/grsec_fifo.c
new file mode 100644
index 0000000..06cc6ea
--- /dev/null
+++ b/grsecurity/grsec_fifo.c
@@ -0,0 +1,24 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/grinternal.h>
+
+int
+gr_handle_fifo(const struct dentry *dentry, const struct vfsmount *mnt,
+	       const struct dentry *dir, const int flag, const int acc_mode)
+{
+#ifdef CONFIG_GRKERNSEC_FIFO
+	const struct cred *cred = current_cred();
+
+	if (grsec_enable_fifo && S_ISFIFO(dentry->d_inode->i_mode) &&
+	    !(flag & O_EXCL) && (dir->d_inode->i_mode & S_ISVTX) &&
+	    !uid_eq(dentry->d_inode->i_uid, dir->d_inode->i_uid) &&
+	    !uid_eq(cred->fsuid, dentry->d_inode->i_uid)) {
+		if (!inode_permission(dentry->d_inode, acc_mode))
+			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));
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_fork.c b/grsecurity/grsec_fork.c
new file mode 100644
index 0000000..8ca18bf
--- /dev/null
+++ b/grsecurity/grsec_fork.c
@@ -0,0 +1,23 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+#include <linux/errno.h>
+
+void
+gr_log_forkfail(const int retval)
+{
+#ifdef CONFIG_GRKERNSEC_FORKFAIL
+	if (grsec_enable_forkfail && (retval == -EAGAIN || retval == -ENOMEM)) {
+		switch (retval) {
+			case -EAGAIN:
+				gr_log_str(GR_DONT_AUDIT, GR_FAILFORK_MSG, "EAGAIN");
+				break;
+			case -ENOMEM:
+				gr_log_str(GR_DONT_AUDIT, GR_FAILFORK_MSG, "ENOMEM");
+				break;
+		}
+	}
+#endif
+	return;
+}
diff --git a/grsecurity/grsec_init.c b/grsecurity/grsec_init.c
new file mode 100644
index 0000000..b7cb191
--- /dev/null
+++ b/grsecurity/grsec_init.c
@@ -0,0 +1,286 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/gracl.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/percpu.h>
+#include <linux/module.h>
+
+int grsec_enable_ptrace_readexec;
+int grsec_enable_setxid;
+int grsec_enable_symlinkown;
+kgid_t grsec_symlinkown_gid;
+int grsec_enable_brute;
+int grsec_enable_link;
+int grsec_enable_dmesg;
+int grsec_enable_harden_ptrace;
+int grsec_enable_harden_ipc;
+int grsec_enable_fifo;
+int grsec_enable_execlog;
+int grsec_enable_signal;
+int grsec_enable_forkfail;
+int grsec_enable_audit_ptrace;
+int grsec_enable_time;
+int grsec_enable_group;
+kgid_t grsec_audit_gid;
+int grsec_enable_chdir;
+int grsec_enable_mount;
+int grsec_enable_rofs;
+int grsec_deny_new_usb;
+int grsec_enable_chroot_findtask;
+int grsec_enable_chroot_mount;
+int grsec_enable_chroot_shmat;
+int grsec_enable_chroot_fchdir;
+int grsec_enable_chroot_double;
+int grsec_enable_chroot_pivot;
+int grsec_enable_chroot_chdir;
+int grsec_enable_chroot_chmod;
+int grsec_enable_chroot_mknod;
+int grsec_enable_chroot_nice;
+int grsec_enable_chroot_execlog;
+int grsec_enable_chroot_caps;
+int grsec_enable_chroot_sysctl;
+int grsec_enable_chroot_unix;
+int grsec_enable_tpe;
+kgid_t grsec_tpe_gid;
+int grsec_enable_blackhole;
+#ifdef CONFIG_IPV6_MODULE
+EXPORT_SYMBOL_GPL(grsec_enable_blackhole);
+#endif
+int grsec_lastack_retries;
+int grsec_enable_tpe_all;
+int grsec_enable_tpe_invert;
+int grsec_enable_socket_all;
+kgid_t grsec_socket_all_gid;
+int grsec_enable_socket_client;
+kgid_t grsec_socket_client_gid;
+int grsec_enable_socket_server;
+kgid_t grsec_socket_server_gid;
+int grsec_resource_logging;
+int grsec_disable_privio;
+int grsec_enable_log_rwxmaps;
+int grsec_lock;
+
+DEFINE_SPINLOCK(grsec_alert_lock);
+unsigned long grsec_alert_wtime = 0;
+unsigned long grsec_alert_fyet = 0;
+
+DEFINE_SPINLOCK(grsec_audit_lock);
+
+DEFINE_RWLOCK(grsec_exec_file_lock);
+
+char *gr_shared_page[4];
+
+char *gr_alert_log_fmt;
+char *gr_audit_log_fmt;
+char *gr_alert_log_buf;
+char *gr_audit_log_buf;
+
+extern struct gr_arg *gr_usermode;
+extern unsigned char *gr_system_salt;
+extern unsigned char *gr_system_sum;
+
+void __init
+grsecurity_init(void)
+{
+	int j;
+	/* create the per-cpu shared pages */
+
+#ifdef CONFIG_X86
+	memset((char *)(0x41a + PAGE_OFFSET), 0, 36);
+#endif
+
+	for (j = 0; j < 4; j++) {
+		gr_shared_page[j] = (char *)__alloc_percpu(PAGE_SIZE, __alignof__(unsigned long long));
+		if (gr_shared_page[j] == NULL) {
+			panic("Unable to allocate grsecurity shared page");
+			return;
+		}
+	}
+
+	/* allocate log buffers */
+	gr_alert_log_fmt = kmalloc(512, GFP_KERNEL);
+	if (!gr_alert_log_fmt) {
+		panic("Unable to allocate grsecurity alert log format buffer");
+		return;
+	}
+	gr_audit_log_fmt = kmalloc(512, GFP_KERNEL);
+	if (!gr_audit_log_fmt) {
+		panic("Unable to allocate grsecurity audit log format buffer");
+		return;
+	}
+	gr_alert_log_buf = (char *) get_zeroed_page(GFP_KERNEL);
+	if (!gr_alert_log_buf) {
+		panic("Unable to allocate grsecurity alert log buffer");
+		return;
+	}
+	gr_audit_log_buf = (char *) get_zeroed_page(GFP_KERNEL);
+	if (!gr_audit_log_buf) {
+		panic("Unable to allocate grsecurity audit log buffer");
+		return;
+	}
+
+	/* allocate memory for authentication structure */
+	gr_usermode = kmalloc(sizeof(struct gr_arg), GFP_KERNEL);
+	gr_system_salt = kmalloc(GR_SALT_LEN, GFP_KERNEL);
+	gr_system_sum = kmalloc(GR_SHA_LEN, GFP_KERNEL);
+
+	if (!gr_usermode || !gr_system_salt || !gr_system_sum) {
+		panic("Unable to allocate grsecurity authentication structure");
+		return;
+	}
+
+#ifdef CONFIG_GRKERNSEC_IO
+#if !defined(CONFIG_GRKERNSEC_SYSCTL_DISTRO)
+	grsec_disable_privio = 1;
+#elif defined(CONFIG_GRKERNSEC_SYSCTL_ON)
+	grsec_disable_privio = 1;
+#else
+	grsec_disable_privio = 0;
+#endif
+#endif
+
+#ifdef CONFIG_GRKERNSEC_TPE_INVERT
+	/* for backward compatibility, tpe_invert always defaults to on if
+	   enabled in the kernel
+	*/
+	grsec_enable_tpe_invert = 1;
+#endif
+
+#if !defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_SYSCTL_ON)
+#ifndef CONFIG_GRKERNSEC_SYSCTL
+	grsec_lock = 1;
+#endif
+
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	grsec_enable_log_rwxmaps = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_GROUP
+	grsec_enable_group = 1;
+	grsec_audit_gid = KGIDT_INIT(CONFIG_GRKERNSEC_AUDIT_GID);
+#endif
+#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC
+	grsec_enable_ptrace_readexec = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR
+	grsec_enable_chdir = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
+	grsec_enable_harden_ptrace = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_HARDEN_IPC
+	grsec_enable_harden_ipc = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
+	grsec_enable_mount = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_LINK
+	grsec_enable_link = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_BRUTE
+	grsec_enable_brute = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_DMESG
+	grsec_enable_dmesg = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	grsec_enable_blackhole = 1;
+	grsec_lastack_retries = 4;
+#endif
+#ifdef CONFIG_GRKERNSEC_FIFO
+	grsec_enable_fifo = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_EXECLOG
+	grsec_enable_execlog = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_SETXID
+	grsec_enable_setxid = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_SIGNAL
+	grsec_enable_signal = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_FORKFAIL
+	grsec_enable_forkfail = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_TIME
+	grsec_enable_time = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_RESLOG
+	grsec_resource_logging = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
+	grsec_enable_chroot_findtask = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX
+	grsec_enable_chroot_unix = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT
+	grsec_enable_chroot_mount = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
+	grsec_enable_chroot_fchdir = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT
+	grsec_enable_chroot_shmat = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE
+	grsec_enable_audit_ptrace = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE
+	grsec_enable_chroot_double = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT
+	grsec_enable_chroot_pivot = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR
+	grsec_enable_chroot_chdir = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD
+	grsec_enable_chroot_chmod = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD
+	grsec_enable_chroot_mknod = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
+	grsec_enable_chroot_nice = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG
+	grsec_enable_chroot_execlog = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	grsec_enable_chroot_caps = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL
+	grsec_enable_chroot_sysctl = 1;
+#endif
+#ifdef CONFIG_GRKERNSEC_SYMLINKOWN
+	grsec_enable_symlinkown = 1;
+	grsec_symlinkown_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SYMLINKOWN_GID);
+#endif
+#ifdef CONFIG_GRKERNSEC_TPE
+	grsec_enable_tpe = 1;
+	grsec_tpe_gid = KGIDT_INIT(CONFIG_GRKERNSEC_TPE_GID);
+#ifdef CONFIG_GRKERNSEC_TPE_ALL
+	grsec_enable_tpe_all = 1;
+#endif
+#endif
+#ifdef CONFIG_GRKERNSEC_SOCKET_ALL
+	grsec_enable_socket_all = 1;
+	grsec_socket_all_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SOCKET_ALL_GID);
+#endif
+#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT
+	grsec_enable_socket_client = 1;
+	grsec_socket_client_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SOCKET_CLIENT_GID);
+#endif
+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
+	grsec_enable_socket_server = 1;
+	grsec_socket_server_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SOCKET_SERVER_GID);
+#endif
+#endif
+#ifdef CONFIG_GRKERNSEC_DENYUSB_FORCE
+	grsec_deny_new_usb = 1;
+#endif
+
+	return;
+}
diff --git a/grsecurity/grsec_ipc.c b/grsecurity/grsec_ipc.c
new file mode 100644
index 0000000..1773300
--- /dev/null
+++ b/grsecurity/grsec_ipc.c
@@ -0,0 +1,48 @@
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/ipc.h>
+#include <linux/ipc_namespace.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+int
+gr_ipc_permitted(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, int requested_mode, int granted_mode)
+{
+#ifdef CONFIG_GRKERNSEC_HARDEN_IPC
+	int write;
+	int orig_granted_mode;
+	kuid_t euid;
+	kgid_t egid;
+
+	if (!grsec_enable_harden_ipc)
+		return 1;
+
+	euid = current_euid();
+	egid = current_egid();
+
+	write = requested_mode & 00002;
+	orig_granted_mode = ipcp->mode;
+
+	if (uid_eq(euid, ipcp->cuid) || uid_eq(euid, ipcp->uid))
+		orig_granted_mode >>= 6;
+	else {
+		/* if likely wrong permissions, lock to user */
+		if (orig_granted_mode & 0007)
+			orig_granted_mode = 0;
+		/* otherwise do a egid-only check */
+		else if (gid_eq(egid, ipcp->cgid) || gid_eq(egid, ipcp->gid))
+			orig_granted_mode >>= 3;
+		/* otherwise, no access */
+		else
+			orig_granted_mode = 0;
+	}
+	if (!(requested_mode & ~granted_mode & 0007) && (requested_mode & ~orig_granted_mode & 0007) &&
+	    !ns_capable_nolog(ns->user_ns, CAP_IPC_OWNER)) {
+		gr_log_str_int(GR_DONT_AUDIT, GR_IPC_DENIED_MSG, write ? "write" : "read", GR_GLOBAL_UID(ipcp->cuid));
+		return 0;
+	}
+#endif
+	return 1;
+}
diff --git a/grsecurity/grsec_link.c b/grsecurity/grsec_link.c
new file mode 100644
index 0000000..5e05e20
--- /dev/null
+++ b/grsecurity/grsec_link.c
@@ -0,0 +1,58 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/file.h>
+#include <linux/grinternal.h>
+
+int gr_handle_symlink_owner(const struct path *link, const struct inode *target)
+{
+#ifdef CONFIG_GRKERNSEC_SYMLINKOWN
+	const struct inode *link_inode = link->dentry->d_inode;
+
+	if (grsec_enable_symlinkown && in_group_p(grsec_symlinkown_gid) &&
+	   /* ignore root-owned links, e.g. /proc/self */
+	    gr_is_global_nonroot(link_inode->i_uid) && target &&
+	    !uid_eq(link_inode->i_uid, target->i_uid)) {
+		gr_log_fs_int2(GR_DONT_AUDIT, GR_SYMLINKOWNER_MSG, link->dentry, link->mnt, link_inode->i_uid, target->i_uid);
+		return 1;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_follow_link(const struct inode *parent,
+		      const struct inode *inode,
+		      const struct dentry *dentry, const struct vfsmount *mnt)
+{
+#ifdef CONFIG_GRKERNSEC_LINK
+	const struct cred *cred = current_cred();
+
+	if (grsec_enable_link && S_ISLNK(inode->i_mode) &&
+	    (parent->i_mode & S_ISVTX) && !uid_eq(parent->i_uid, inode->i_uid) &&
+	    (parent->i_mode & S_IWOTH) && !uid_eq(cred->fsuid, inode->i_uid)) {
+		gr_log_fs_int2(GR_DONT_AUDIT, GR_SYMLINK_MSG, dentry, mnt, inode->i_uid, inode->i_gid);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_hardlink(const struct dentry *dentry,
+		   const struct vfsmount *mnt,
+		   struct inode *inode, const int mode, const struct filename *to)
+{
+#ifdef CONFIG_GRKERNSEC_LINK
+	const struct cred *cred = current_cred();
+
+	if (grsec_enable_link && !uid_eq(cred->fsuid, inode->i_uid) &&
+	    (!S_ISREG(mode) || is_privileged_binary(dentry) || 
+	     (inode_permission(inode, MAY_READ | MAY_WRITE))) &&
+	    !capable(CAP_FOWNER) && gr_is_global_nonroot(cred->uid)) {
+		gr_log_fs_int2_str(GR_DONT_AUDIT, GR_HARDLINK_MSG, dentry, mnt, inode->i_uid, inode->i_gid, to->name);
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_log.c b/grsecurity/grsec_log.c
new file mode 100644
index 0000000..dbe0a6b
--- /dev/null
+++ b/grsecurity/grsec_log.c
@@ -0,0 +1,341 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/tty.h>
+#include <linux/fs.h>
+#include <linux/mm.h>
+#include <linux/grinternal.h>
+
+#ifdef CONFIG_TREE_PREEMPT_RCU
+#define DISABLE_PREEMPT() preempt_disable()
+#define ENABLE_PREEMPT() preempt_enable()
+#else
+#define DISABLE_PREEMPT()
+#define ENABLE_PREEMPT()
+#endif
+
+#define BEGIN_LOCKS(x) \
+	DISABLE_PREEMPT(); \
+	rcu_read_lock(); \
+	read_lock(&tasklist_lock); \
+	read_lock(&grsec_exec_file_lock); \
+	if (x != GR_DO_AUDIT) \
+		spin_lock(&grsec_alert_lock); \
+	else \
+		spin_lock(&grsec_audit_lock)
+
+#define END_LOCKS(x) \
+	if (x != GR_DO_AUDIT) \
+		spin_unlock(&grsec_alert_lock); \
+	else \
+		spin_unlock(&grsec_audit_lock); \
+	read_unlock(&grsec_exec_file_lock); \
+	read_unlock(&tasklist_lock); \
+	rcu_read_unlock(); \
+	ENABLE_PREEMPT(); \
+	if (x == GR_DONT_AUDIT) \
+		gr_handle_alertkill(current)
+
+enum {
+	FLOODING,
+	NO_FLOODING
+};
+
+extern char *gr_alert_log_fmt;
+extern char *gr_audit_log_fmt;
+extern char *gr_alert_log_buf;
+extern char *gr_audit_log_buf;
+
+static int gr_log_start(int audit)
+{
+	char *loglevel = (audit == GR_DO_AUDIT) ? KERN_INFO : KERN_ALERT;
+	char *fmt = (audit == GR_DO_AUDIT) ? gr_audit_log_fmt : gr_alert_log_fmt;
+	char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
+#if (CONFIG_GRKERNSEC_FLOODTIME > 0 && CONFIG_GRKERNSEC_FLOODBURST > 0)
+	unsigned long curr_secs = get_seconds();
+
+	if (audit == GR_DO_AUDIT)
+		goto set_fmt;
+
+	if (!grsec_alert_wtime || time_after(curr_secs, grsec_alert_wtime + CONFIG_GRKERNSEC_FLOODTIME)) {
+		grsec_alert_wtime = curr_secs;
+		grsec_alert_fyet = 0;
+	} else if (time_before_eq(curr_secs, grsec_alert_wtime + CONFIG_GRKERNSEC_FLOODTIME)
+		    && (grsec_alert_fyet < CONFIG_GRKERNSEC_FLOODBURST)) {
+		grsec_alert_fyet++;
+	} else if (grsec_alert_fyet == CONFIG_GRKERNSEC_FLOODBURST) {
+		grsec_alert_wtime = curr_secs;
+		grsec_alert_fyet++;
+		printk(KERN_ALERT "grsec: more alerts, logging disabled for %d seconds\n", CONFIG_GRKERNSEC_FLOODTIME);
+		return FLOODING;
+	}
+	else return FLOODING;
+
+set_fmt:
+#endif
+	memset(buf, 0, PAGE_SIZE);
+	if (current->signal->curr_ip && gr_acl_is_enabled()) {
+		sprintf(fmt, "%s%s", loglevel, "grsec: From %pI4: (%.64s:%c:%.950s) ");
+		snprintf(buf, PAGE_SIZE - 1, fmt, &current->signal->curr_ip, current->role->rolename, gr_roletype_to_char(), current->acl->filename);
+	} else if (current->signal->curr_ip) {
+		sprintf(fmt, "%s%s", loglevel, "grsec: From %pI4: ");
+		snprintf(buf, PAGE_SIZE - 1, fmt, &current->signal->curr_ip);
+	} else if (gr_acl_is_enabled()) {
+		sprintf(fmt, "%s%s", loglevel, "grsec: (%.64s:%c:%.950s) ");
+		snprintf(buf, PAGE_SIZE - 1, fmt, current->role->rolename, gr_roletype_to_char(), current->acl->filename);
+	} else {
+		sprintf(fmt, "%s%s", loglevel, "grsec: ");
+		strcpy(buf, fmt);
+	}
+
+	return NO_FLOODING;
+}
+
+static void gr_log_middle(int audit, const char *msg, va_list ap)
+	__attribute__ ((format (printf, 2, 0)));
+
+static void gr_log_middle(int audit, const char *msg, va_list ap)
+{
+	char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
+	unsigned int len = strlen(buf);
+
+	vsnprintf(buf + len, PAGE_SIZE - len - 1, msg, ap);
+
+	return;
+}
+
+static void gr_log_middle_varargs(int audit, const char *msg, ...)
+	__attribute__ ((format (printf, 2, 3)));
+
+static void gr_log_middle_varargs(int audit, const char *msg, ...)
+{
+	char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
+	unsigned int len = strlen(buf);
+	va_list ap;
+
+	va_start(ap, msg);
+	vsnprintf(buf + len, PAGE_SIZE - len - 1, msg, ap);
+	va_end(ap);
+
+	return;
+}
+
+static void gr_log_end(int audit, int append_default)
+{
+	char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
+	if (append_default) {
+		struct task_struct *task = current;
+		struct task_struct *parent = task->real_parent;
+		const struct cred *cred = __task_cred(task);
+		const struct cred *pcred = __task_cred(parent);
+		unsigned int len = strlen(buf);
+
+		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));
+	}
+
+	printk("%s\n", buf);
+
+	return;
+}
+
+void gr_log_varargs(int audit, const char *msg, int argtypes, ...)
+{
+	int logtype;
+	char *result = (audit == GR_DO_AUDIT) ? "successful" : "denied";
+	char *str1 = NULL, *str2 = NULL, *str3 = NULL;
+	void *voidptr = NULL;
+	int num1 = 0, num2 = 0;
+	unsigned long ulong1 = 0, ulong2 = 0;
+	struct dentry *dentry = NULL;
+	struct vfsmount *mnt = NULL;
+	struct file *file = NULL;
+	struct task_struct *task = NULL;
+	struct vm_area_struct *vma = NULL;
+	const struct cred *cred, *pcred;
+	va_list ap;
+
+	BEGIN_LOCKS(audit);
+	logtype = gr_log_start(audit);
+	if (logtype == FLOODING) {
+		END_LOCKS(audit);
+		return;
+	}
+	va_start(ap, argtypes);
+	switch (argtypes) {
+	case GR_TTYSNIFF:
+		task = va_arg(ap, struct task_struct *);
+		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));
+		break;
+	case GR_SYSCTL_HIDDEN:
+		str1 = va_arg(ap, char *);
+		gr_log_middle_varargs(audit, msg, result, str1);
+		break;
+	case GR_RBAC:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt));
+		break;
+	case GR_RBAC_STR:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		str1 = va_arg(ap, char *);
+		gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1);
+		break;
+	case GR_STR_RBAC:
+		str1 = va_arg(ap, char *);
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		gr_log_middle_varargs(audit, msg, result, str1, gr_to_filename(dentry, mnt));
+		break;
+	case GR_RBAC_MODE2:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		str1 = va_arg(ap, char *);
+		str2 = va_arg(ap, char *);
+		gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1, str2);
+		break;
+	case GR_RBAC_MODE3:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		str1 = va_arg(ap, char *);
+		str2 = va_arg(ap, char *);
+		str3 = va_arg(ap, char *);
+		gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1, str2, str3);
+		break;
+	case GR_FILENAME:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt));
+		break;
+	case GR_STR_FILENAME:
+		str1 = va_arg(ap, char *);
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		gr_log_middle_varargs(audit, msg, str1, gr_to_filename(dentry, mnt));
+		break;
+	case GR_FILENAME_STR:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		str1 = va_arg(ap, char *);
+		gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), str1);
+		break;
+	case GR_FILENAME_TWO_INT:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		num1 = va_arg(ap, int);
+		num2 = va_arg(ap, int);
+		gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), num1, num2);
+		break;
+	case GR_FILENAME_TWO_INT_STR:
+		dentry = va_arg(ap, struct dentry *);
+		mnt = va_arg(ap, struct vfsmount *);
+		num1 = va_arg(ap, int);
+		num2 = va_arg(ap, int);
+		str1 = va_arg(ap, char *);
+		gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), num1, num2, str1);
+		break;
+	case GR_TEXTREL:
+		file = va_arg(ap, struct file *);
+		ulong1 = va_arg(ap, unsigned long);
+		ulong2 = va_arg(ap, unsigned long);
+		gr_log_middle_varargs(audit, msg, file ? gr_to_filename(file->f_path.dentry, file->f_path.mnt) : "<anonymous mapping>", ulong1, ulong2);
+		break;
+	case GR_PTRACE:
+		task = va_arg(ap, struct task_struct *);
+		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));
+		break;
+	case GR_RESOURCE:
+		task = va_arg(ap, struct task_struct *);
+		cred = __task_cred(task);
+		pcred = __task_cred(task->real_parent);
+		ulong1 = va_arg(ap, unsigned long);
+		str1 = va_arg(ap, char *);
+		ulong2 = va_arg(ap, unsigned long);
+		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));
+		break;
+	case GR_CAP:
+		task = va_arg(ap, struct task_struct *);
+		cred = __task_cred(task);
+		pcred = __task_cred(task->real_parent);
+		str1 = va_arg(ap, char *);
+		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));
+		break;
+	case GR_SIG:
+		str1 = va_arg(ap, char *);
+		voidptr = va_arg(ap, void *);
+		gr_log_middle_varargs(audit, msg, str1, voidptr);
+		break;
+	case GR_SIG2:
+		task = va_arg(ap, struct task_struct *);
+		cred = __task_cred(task);
+		pcred = __task_cred(task->real_parent);
+		num1 = va_arg(ap, int);
+		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));
+		break;
+	case GR_CRASH1:
+		task = va_arg(ap, struct task_struct *);
+		cred = __task_cred(task);
+		pcred = __task_cred(task->real_parent);
+		ulong1 = va_arg(ap, unsigned long);
+		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);
+		break;
+	case GR_CRASH2:
+		task = va_arg(ap, struct task_struct *);
+		cred = __task_cred(task);
+		pcred = __task_cred(task->real_parent);
+		ulong1 = va_arg(ap, unsigned long);
+		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);
+		break;
+	case GR_RWXMAP:
+		file = va_arg(ap, struct file *);
+		gr_log_middle_varargs(audit, msg, file ? gr_to_filename(file->f_path.dentry, file->f_path.mnt) : "<anonymous mapping>");
+		break;
+	case GR_RWXMAPVMA:
+		vma = va_arg(ap, struct vm_area_struct *);
+		if (vma->vm_file)
+			str1 = gr_to_filename(vma->vm_file->f_path.dentry, vma->vm_file->f_path.mnt);
+		else if (vma->vm_flags & (VM_GROWSDOWN | VM_GROWSUP))
+			str1 = "<stack>";
+		else if (vma->vm_start <= current->mm->brk &&
+			 vma->vm_end >= current->mm->start_brk)
+			str1 = "<heap>";
+		else
+			str1 = "<anonymous mapping>";
+		gr_log_middle_varargs(audit, msg, str1);
+		break;
+	case GR_PSACCT:
+		{
+			unsigned int wday, cday;
+			__u8 whr, chr;
+			__u8 wmin, cmin;
+			__u8 wsec, csec;
+			char cur_tty[64] = { 0 };
+			char parent_tty[64] = { 0 };
+
+			task = va_arg(ap, struct task_struct *);
+			wday = va_arg(ap, unsigned int);
+			cday = va_arg(ap, unsigned int);
+			whr = va_arg(ap, int);
+			chr = va_arg(ap, int);
+			wmin = va_arg(ap, int);
+			cmin = va_arg(ap, int);
+			wsec = va_arg(ap, int);
+			csec = va_arg(ap, int);
+			ulong1 = va_arg(ap, unsigned long);
+			cred = __task_cred(task);
+			pcred = __task_cred(task->real_parent);
+
+			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));
+		}
+		break;
+	default:
+		gr_log_middle(audit, msg, ap);
+	}
+	va_end(ap);
+	// these don't need DEFAULTSECARGS printed on the end
+	if (argtypes == GR_CRASH1 || argtypes == GR_CRASH2)
+		gr_log_end(audit, 0);
+	else
+		gr_log_end(audit, 1);
+	END_LOCKS(audit);
+}
diff --git a/grsecurity/grsec_mem.c b/grsecurity/grsec_mem.c
new file mode 100644
index 0000000..0e39d8c
--- /dev/null
+++ b/grsecurity/grsec_mem.c
@@ -0,0 +1,48 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/mman.h>
+#include <linux/module.h>
+#include <linux/grinternal.h>
+
+void gr_handle_msr_write(void)
+{
+	gr_log_noargs(GR_DONT_AUDIT, GR_MSRWRITE_MSG);
+	return;
+}
+EXPORT_SYMBOL_GPL(gr_handle_msr_write);
+
+void
+gr_handle_ioperm(void)
+{
+	gr_log_noargs(GR_DONT_AUDIT, GR_IOPERM_MSG);
+	return;
+}
+
+void
+gr_handle_iopl(void)
+{
+	gr_log_noargs(GR_DONT_AUDIT, GR_IOPL_MSG);
+	return;
+}
+
+void
+gr_handle_mem_readwrite(u64 from, u64 to)
+{
+	gr_log_two_u64(GR_DONT_AUDIT, GR_MEM_READWRITE_MSG, from, to);
+	return;
+}
+
+void
+gr_handle_vm86(void)
+{
+	gr_log_noargs(GR_DONT_AUDIT, GR_VM86_MSG);
+	return;
+}
+
+void
+gr_log_badprocpid(const char *entry)
+{
+	gr_log_str(GR_DONT_AUDIT, GR_BADPROCPID_MSG, entry);
+	return;
+}
diff --git a/grsecurity/grsec_mount.c b/grsecurity/grsec_mount.c
new file mode 100644
index 0000000..cd9e124
--- /dev/null
+++ b/grsecurity/grsec_mount.c
@@ -0,0 +1,65 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mount.h>
+#include <linux/major.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+void
+gr_log_remount(const char *devname, const int retval)
+{
+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
+	if (grsec_enable_mount && (retval >= 0))
+		gr_log_str(GR_DO_AUDIT, GR_REMOUNT_AUDIT_MSG, devname ? devname : "none");
+#endif
+	return;
+}
+
+void
+gr_log_unmount(const char *devname, const int retval)
+{
+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
+	if (grsec_enable_mount && (retval >= 0))
+		gr_log_str(GR_DO_AUDIT, GR_UNMOUNT_AUDIT_MSG, devname ? devname : "none");
+#endif
+	return;
+}
+
+void
+gr_log_mount(const char *from, const char *to, const int retval)
+{
+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
+	if (grsec_enable_mount && (retval >= 0))
+		gr_log_str_str(GR_DO_AUDIT, GR_MOUNT_AUDIT_MSG, from ? from : "none", to);
+#endif
+	return;
+}
+
+int
+gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags)
+{
+#ifdef CONFIG_GRKERNSEC_ROFS
+	if (grsec_enable_rofs && !(mnt_flags & MNT_READONLY)) {
+		gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_MOUNT_MSG, dentry, mnt);
+		return -EPERM;
+	} else
+		return 0;
+#endif
+	return 0;
+}
+
+int
+gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode)
+{
+#ifdef CONFIG_GRKERNSEC_ROFS
+	struct inode *inode = dentry->d_inode;
+
+	if (grsec_enable_rofs && (acc_mode & MAY_WRITE) &&
+	    inode && (S_ISBLK(inode->i_mode) || (S_ISCHR(inode->i_mode) && imajor(inode) == RAW_MAJOR))) {
+		gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_BLOCKWRITE_MSG, dentry, mnt);
+		return -EPERM;
+	} else
+		return 0;
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_pax.c b/grsecurity/grsec_pax.c
new file mode 100644
index 0000000..6ee9d50
--- /dev/null
+++ b/grsecurity/grsec_pax.c
@@ -0,0 +1,45 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/file.h>
+#include <linux/grinternal.h>
+#include <linux/grsecurity.h>
+
+void
+gr_log_textrel(struct vm_area_struct * vma)
+{
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	if (grsec_enable_log_rwxmaps)
+		gr_log_textrel_ulong_ulong(GR_DONT_AUDIT, GR_TEXTREL_AUDIT_MSG, vma->vm_file, vma->vm_start, vma->vm_pgoff);
+#endif
+	return;
+}
+
+void gr_log_ptgnustack(struct file *file)
+{
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	if (grsec_enable_log_rwxmaps)
+		gr_log_rwxmap(GR_DONT_AUDIT, GR_PTGNUSTACK_MSG, file);
+#endif
+	return;
+}
+
+void
+gr_log_rwxmmap(struct file *file)
+{
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	if (grsec_enable_log_rwxmaps)
+		gr_log_rwxmap(GR_DONT_AUDIT, GR_RWXMMAP_MSG, file);
+#endif
+	return;
+}
+
+void
+gr_log_rwxmprotect(struct vm_area_struct *vma)
+{
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	if (grsec_enable_log_rwxmaps)
+		gr_log_rwxmap_vma(GR_DONT_AUDIT, GR_RWXMPROTECT_MSG, vma);
+#endif
+	return;
+}
diff --git a/grsecurity/grsec_proc.c b/grsecurity/grsec_proc.c
new file mode 100644
index 0000000..2005a3a
--- /dev/null
+++ b/grsecurity/grsec_proc.c
@@ -0,0 +1,20 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+int gr_proc_is_restricted(void)
+{
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	const struct cred *cred = current_cred();
+#endif
+
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	if (!uid_eq(cred->fsuid, GLOBAL_ROOT_UID))
+		return -EACCES;
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	if (!uid_eq(cred->fsuid, GLOBAL_ROOT_UID) && !in_group_p(grsec_proc_gid))
+		return -EACCES;
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_ptrace.c b/grsecurity/grsec_ptrace.c
new file mode 100644
index 0000000..f7f29aa
--- /dev/null
+++ b/grsecurity/grsec_ptrace.c
@@ -0,0 +1,30 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/grinternal.h>
+#include <linux/security.h>
+
+void
+gr_audit_ptrace(struct task_struct *task)
+{
+#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE
+	if (grsec_enable_audit_ptrace)
+		gr_log_ptrace(GR_DO_AUDIT, GR_PTRACE_AUDIT_MSG, task);
+#endif
+	return;
+}
+
+int
+gr_ptrace_readexec(struct file *file, int unsafe_flags)
+{
+#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC
+	const struct dentry *dentry = file->f_path.dentry;
+	const struct vfsmount *mnt = file->f_path.mnt;
+
+	if (grsec_enable_ptrace_readexec && (unsafe_flags & LSM_UNSAFE_PTRACE) && 
+	    (inode_permission(dentry->d_inode, MAY_READ) || !gr_acl_handle_open(dentry, mnt, MAY_READ))) {
+		gr_log_fs_generic(GR_DONT_AUDIT, GR_PTRACE_READEXEC_MSG, dentry, mnt);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_sig.c b/grsecurity/grsec_sig.c
new file mode 100644
index 0000000..3860c7e
--- /dev/null
+++ b/grsecurity/grsec_sig.c
@@ -0,0 +1,236 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/delay.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+#include <linux/hardirq.h>
+
+char *signames[] = {
+	[SIGSEGV] = "Segmentation fault",
+	[SIGILL] = "Illegal instruction",
+	[SIGABRT] = "Abort",
+	[SIGBUS] = "Invalid alignment/Bus error"
+};
+
+void
+gr_log_signal(const int sig, const void *addr, const struct task_struct *t)
+{
+#ifdef CONFIG_GRKERNSEC_SIGNAL
+	if (grsec_enable_signal && ((sig == SIGSEGV) || (sig == SIGILL) ||
+				    (sig == SIGABRT) || (sig == SIGBUS))) {
+		if (task_pid_nr(t) == task_pid_nr(current)) {
+			gr_log_sig_addr(GR_DONT_AUDIT_GOOD, GR_UNISIGLOG_MSG, signames[sig], addr);
+		} else {
+			gr_log_sig_task(GR_DONT_AUDIT_GOOD, GR_DUALSIGLOG_MSG, t, sig);
+		}
+	}
+#endif
+	return;
+}
+
+int
+gr_handle_signal(const struct task_struct *p, const int sig)
+{
+#ifdef CONFIG_GRKERNSEC
+	/* ignore the 0 signal for protected task checks */
+	if (task_pid_nr(current) > 1 && sig && gr_check_protected_task(p)) {
+		gr_log_sig_task(GR_DONT_AUDIT, GR_SIG_ACL_MSG, p, sig);
+		return -EPERM;
+	} else if (gr_pid_is_chrooted((struct task_struct *)p)) {
+		return -EPERM;
+	}
+#endif
+	return 0;
+}
+
+#ifdef CONFIG_GRKERNSEC
+extern int specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t);
+
+int gr_fake_force_sig(int sig, struct task_struct *t)
+{
+	unsigned long int flags;
+	int ret, blocked, ignored;
+	struct k_sigaction *action;
+
+	spin_lock_irqsave(&t->sighand->siglock, flags);
+	action = &t->sighand->action[sig-1];
+	ignored = action->sa.sa_handler == SIG_IGN;
+	blocked = sigismember(&t->blocked, sig);
+	if (blocked || ignored) {
+		action->sa.sa_handler = SIG_DFL;
+		if (blocked) {
+			sigdelset(&t->blocked, sig);
+			recalc_sigpending_and_wake(t);
+		}
+	}
+	if (action->sa.sa_handler == SIG_DFL)
+		t->signal->flags &= ~SIGNAL_UNKILLABLE;
+	ret = specific_send_sig_info(sig, SEND_SIG_PRIV, t);
+
+	spin_unlock_irqrestore(&t->sighand->siglock, flags);
+
+	return ret;
+}
+#endif
+
+#define GR_USER_BAN_TIME (15 * 60)
+#define GR_DAEMON_BRUTE_TIME (30 * 60)
+
+void gr_handle_brute_attach(int dumpable)
+{
+#ifdef CONFIG_GRKERNSEC_BRUTE
+	struct task_struct *p = current;
+	kuid_t uid = GLOBAL_ROOT_UID;
+	int daemon = 0;
+
+	if (!grsec_enable_brute)
+		return;
+
+	rcu_read_lock();
+	read_lock(&tasklist_lock);
+	read_lock(&grsec_exec_file_lock);
+	if (p->real_parent && gr_is_same_file(p->real_parent->exec_file, p->exec_file)) {
+		p->real_parent->brute_expires = get_seconds() + GR_DAEMON_BRUTE_TIME;
+		p->real_parent->brute = 1;
+		daemon = 1;
+	} else {
+		const struct cred *cred = __task_cred(p), *cred2;
+		struct task_struct *tsk, *tsk2;
+
+		if (dumpable != SUID_DUMP_USER && gr_is_global_nonroot(cred->uid)) {
+			struct user_struct *user;
+
+			uid = cred->uid;
+
+			/* this is put upon execution past expiration */
+			user = find_user(uid);
+			if (user == NULL)
+				goto unlock;
+			user->suid_banned = 1;
+			user->suid_ban_expires = get_seconds() + GR_USER_BAN_TIME;
+			if (user->suid_ban_expires == ~0UL)
+				user->suid_ban_expires--;
+
+			/* only kill other threads of the same binary, from the same user */
+			do_each_thread(tsk2, tsk) {
+				cred2 = __task_cred(tsk);
+				if (tsk != p && uid_eq(cred2->uid, uid) && gr_is_same_file(tsk->exec_file, p->exec_file))
+					gr_fake_force_sig(SIGKILL, tsk);
+			} while_each_thread(tsk2, tsk);
+		}
+	}
+unlock:
+	read_unlock(&grsec_exec_file_lock);
+	read_unlock(&tasklist_lock);
+	rcu_read_unlock();
+
+	if (gr_is_global_nonroot(uid))
+		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);
+	else if (daemon)
+		gr_log_noargs(GR_DONT_AUDIT, GR_BRUTE_DAEMON_MSG);
+
+#endif
+	return;
+}
+
+void gr_handle_brute_check(void)
+{
+#ifdef CONFIG_GRKERNSEC_BRUTE
+	struct task_struct *p = current;
+
+	if (unlikely(p->brute)) {
+		if (!grsec_enable_brute)
+			p->brute = 0;
+		else if (time_before(get_seconds(), p->brute_expires))
+			msleep(30 * 1000);
+	}
+#endif
+	return;
+}
+
+void gr_handle_kernel_exploit(void)
+{
+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
+	const struct cred *cred;
+	struct task_struct *tsk, *tsk2;
+	struct user_struct *user;
+	kuid_t uid;
+
+	if (in_irq() || in_serving_softirq() || in_nmi())
+		panic("grsec: halting the system due to suspicious kernel crash caused in interrupt context");
+
+	uid = current_uid();
+
+	if (gr_is_global_root(uid))
+		panic("grsec: halting the system due to suspicious kernel crash caused by root");
+	else {
+		/* kill all the processes of this user, hold a reference
+		   to their creds struct, and prevent them from creating
+		   another process until system reset
+		*/
+		printk(KERN_ALERT "grsec: banning user with uid %u until system restart for suspicious kernel crash\n",
+			GR_GLOBAL_UID(uid));
+		/* we intentionally leak this ref */
+		user = get_uid(current->cred->user);
+		if (user)
+			user->kernel_banned = 1;
+
+		/* kill all processes of this user */
+		read_lock(&tasklist_lock);
+		do_each_thread(tsk2, tsk) {
+			cred = __task_cred(tsk);
+			if (uid_eq(cred->uid, uid))
+				gr_fake_force_sig(SIGKILL, tsk);
+		} while_each_thread(tsk2, tsk);
+		read_unlock(&tasklist_lock); 
+	}
+#endif
+}
+
+#ifdef CONFIG_GRKERNSEC_BRUTE
+static bool suid_ban_expired(struct user_struct *user)
+{
+	if (user->suid_ban_expires != ~0UL && time_after_eq(get_seconds(), user->suid_ban_expires)) {
+		user->suid_banned = 0;
+		user->suid_ban_expires = 0;
+		free_uid(user);
+		return true;
+	}
+
+	return false;
+}
+#endif
+
+int gr_process_kernel_exec_ban(void)
+{
+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
+	if (unlikely(current->cred->user->kernel_banned))
+		return -EPERM;
+#endif
+	return 0;
+}
+
+int gr_process_kernel_setuid_ban(struct user_struct *user)
+{
+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
+	if (unlikely(user->kernel_banned))
+		gr_fake_force_sig(SIGKILL, current);
+#endif
+	return 0;
+}
+
+int gr_process_suid_exec_ban(const struct linux_binprm *bprm)
+{
+#ifdef CONFIG_GRKERNSEC_BRUTE
+	struct user_struct *user = current->cred->user;
+	if (unlikely(user->suid_banned)) {
+		if (suid_ban_expired(user))
+			return 0;
+		/* disallow execution of suid binaries only */
+		else if (!uid_eq(bprm->cred->euid, current->cred->uid))
+			return -EPERM;
+	}
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_sock.c b/grsecurity/grsec_sock.c
new file mode 100644
index 0000000..c0aef3a
--- /dev/null
+++ b/grsecurity/grsec_sock.c
@@ -0,0 +1,244 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/net.h>
+#include <linux/in.h>
+#include <linux/ip.h>
+#include <net/sock.h>
+#include <net/inet_sock.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+#include <linux/gracl.h>
+
+extern int gr_search_udp_recvmsg(const struct sock *sk, const struct sk_buff *skb);
+extern int gr_search_udp_sendmsg(const struct sock *sk, const struct sockaddr_in *addr);
+
+EXPORT_SYMBOL_GPL(gr_search_udp_recvmsg);
+EXPORT_SYMBOL_GPL(gr_search_udp_sendmsg);
+
+#ifdef CONFIG_UNIX_MODULE
+EXPORT_SYMBOL_GPL(gr_acl_handle_unix);
+EXPORT_SYMBOL_GPL(gr_acl_handle_mknod);
+EXPORT_SYMBOL_GPL(gr_handle_chroot_unix);
+EXPORT_SYMBOL_GPL(gr_handle_create);
+#endif
+
+#ifdef CONFIG_GRKERNSEC
+#define gr_conn_table_size 32749
+struct conn_table_entry {
+	struct conn_table_entry *next;
+	struct signal_struct *sig;
+};
+
+struct conn_table_entry *gr_conn_table[gr_conn_table_size];
+DEFINE_SPINLOCK(gr_conn_table_lock);
+
+extern const char * gr_socktype_to_name(unsigned char type);
+extern const char * gr_proto_to_name(unsigned char proto);
+extern const char * gr_sockfamily_to_name(unsigned char family);
+
+static __inline__ int 
+conn_hash(__u32 saddr, __u32 daddr, __u16 sport, __u16 dport, unsigned int size)
+{
+	return ((daddr + saddr + (sport << 8) + (dport << 16)) % size);
+}
+
+static __inline__ int
+conn_match(const struct signal_struct *sig, __u32 saddr, __u32 daddr, 
+	   __u16 sport, __u16 dport)
+{
+	if (unlikely(sig->gr_saddr == saddr && sig->gr_daddr == daddr &&
+		     sig->gr_sport == sport && sig->gr_dport == dport))
+		return 1;
+	else
+		return 0;
+}
+
+static void gr_add_to_task_ip_table_nolock(struct signal_struct *sig, struct conn_table_entry *newent)
+{
+	struct conn_table_entry **match;
+	unsigned int index;
+
+	index = conn_hash(sig->gr_saddr, sig->gr_daddr, 
+			  sig->gr_sport, sig->gr_dport, 
+			  gr_conn_table_size);
+
+	newent->sig = sig;
+	
+	match = &gr_conn_table[index];
+	newent->next = *match;
+	*match = newent;
+
+	return;
+}
+
+static void gr_del_task_from_ip_table_nolock(struct signal_struct *sig)
+{
+	struct conn_table_entry *match, *last = NULL;
+	unsigned int index;
+
+	index = conn_hash(sig->gr_saddr, sig->gr_daddr, 
+			  sig->gr_sport, sig->gr_dport, 
+			  gr_conn_table_size);
+
+	match = gr_conn_table[index];
+	while (match && !conn_match(match->sig, 
+		sig->gr_saddr, sig->gr_daddr, sig->gr_sport, 
+		sig->gr_dport)) {
+		last = match;
+		match = match->next;
+	}
+
+	if (match) {
+		if (last)
+			last->next = match->next;
+		else
+			gr_conn_table[index] = NULL;
+		kfree(match);
+	}
+
+	return;
+}
+
+static struct signal_struct * gr_lookup_task_ip_table(__u32 saddr, __u32 daddr,
+					     __u16 sport, __u16 dport)
+{
+	struct conn_table_entry *match;
+	unsigned int index;
+
+	index = conn_hash(saddr, daddr, sport, dport, gr_conn_table_size);
+
+	match = gr_conn_table[index];
+	while (match && !conn_match(match->sig, saddr, daddr, sport, dport))
+		match = match->next;
+
+	if (match)
+		return match->sig;
+	else
+		return NULL;
+}
+
+#endif
+
+void gr_update_task_in_ip_table(struct task_struct *task, const struct inet_sock *inet)
+{
+#ifdef CONFIG_GRKERNSEC
+	struct signal_struct *sig = task->signal;
+	struct conn_table_entry *newent;
+
+	newent = kmalloc(sizeof(struct conn_table_entry), GFP_ATOMIC);
+	if (newent == NULL)
+		return;
+	/* no bh lock needed since we are called with bh disabled */
+	spin_lock(&gr_conn_table_lock);
+	gr_del_task_from_ip_table_nolock(sig);
+	sig->gr_saddr = inet->inet_rcv_saddr;
+	sig->gr_daddr = inet->inet_daddr;
+	sig->gr_sport = inet->inet_sport;
+	sig->gr_dport = inet->inet_dport;
+	gr_add_to_task_ip_table_nolock(sig, newent);
+	spin_unlock(&gr_conn_table_lock);
+#endif
+	return;
+}
+
+void gr_del_task_from_ip_table(struct task_struct *task)
+{
+#ifdef CONFIG_GRKERNSEC
+	spin_lock_bh(&gr_conn_table_lock);
+	gr_del_task_from_ip_table_nolock(task->signal);
+	spin_unlock_bh(&gr_conn_table_lock);
+#endif
+	return;
+}
+
+void
+gr_attach_curr_ip(const struct sock *sk)
+{
+#ifdef CONFIG_GRKERNSEC
+	struct signal_struct *p, *set;
+	const struct inet_sock *inet = inet_sk(sk);	
+
+	if (unlikely(sk->sk_protocol != IPPROTO_TCP))
+		return;
+
+	set = current->signal;
+
+	spin_lock_bh(&gr_conn_table_lock);
+	p = gr_lookup_task_ip_table(inet->inet_daddr, inet->inet_rcv_saddr,
+				    inet->inet_dport, inet->inet_sport);
+	if (unlikely(p != NULL)) {
+		set->curr_ip = p->curr_ip;
+		set->used_accept = 1;
+		gr_del_task_from_ip_table_nolock(p);
+		spin_unlock_bh(&gr_conn_table_lock);
+		return;
+	}
+	spin_unlock_bh(&gr_conn_table_lock);
+
+	set->curr_ip = inet->inet_daddr;
+	set->used_accept = 1;
+#endif
+	return;
+}
+
+int
+gr_handle_sock_all(const int family, const int type, const int protocol)
+{
+#ifdef CONFIG_GRKERNSEC_SOCKET_ALL
+	if (grsec_enable_socket_all && in_group_p(grsec_socket_all_gid) &&
+	    (family != AF_UNIX)) {
+		if (family == AF_INET)
+			gr_log_str3(GR_DONT_AUDIT, GR_SOCK_MSG, gr_sockfamily_to_name(family), gr_socktype_to_name(type), gr_proto_to_name(protocol));
+		else
+			gr_log_str2_int(GR_DONT_AUDIT, GR_SOCK_NOINET_MSG, gr_sockfamily_to_name(family), gr_socktype_to_name(type), protocol);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_sock_server(const struct sockaddr *sck)
+{
+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
+	if (grsec_enable_socket_server &&
+	    in_group_p(grsec_socket_server_gid) &&
+	    sck && (sck->sa_family != AF_UNIX) &&
+	    (sck->sa_family != AF_LOCAL)) {
+		gr_log_noargs(GR_DONT_AUDIT, GR_BIND_MSG);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_sock_server_other(const struct sock *sck)
+{
+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
+	if (grsec_enable_socket_server &&
+	    in_group_p(grsec_socket_server_gid) &&
+	    sck && (sck->sk_family != AF_UNIX) &&
+	    (sck->sk_family != AF_LOCAL)) {
+		gr_log_noargs(GR_DONT_AUDIT, GR_BIND_MSG);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
+
+int
+gr_handle_sock_client(const struct sockaddr *sck)
+{
+#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT
+	if (grsec_enable_socket_client && in_group_p(grsec_socket_client_gid) &&
+	    sck && (sck->sa_family != AF_UNIX) &&
+	    (sck->sa_family != AF_LOCAL)) {
+		gr_log_noargs(GR_DONT_AUDIT, GR_CONNECT_MSG);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
diff --git a/grsecurity/grsec_sysctl.c b/grsecurity/grsec_sysctl.c
new file mode 100644
index 0000000..8159888
--- /dev/null
+++ b/grsecurity/grsec_sysctl.c
@@ -0,0 +1,479 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/sysctl.h>
+#include <linux/grsecurity.h>
+#include <linux/grinternal.h>
+
+int
+gr_handle_sysctl_mod(const char *dirname, const char *name, const int op)
+{
+#ifdef CONFIG_GRKERNSEC_SYSCTL
+	if (dirname == NULL || name == NULL)
+		return 0;
+	if (!strcmp(dirname, "grsecurity") && grsec_lock && (op & MAY_WRITE)) {
+		gr_log_str(GR_DONT_AUDIT, GR_SYSCTL_MSG, name);
+		return -EACCES;
+	}
+#endif
+	return 0;
+}
+
+#if defined(CONFIG_GRKERNSEC_ROFS) || defined(CONFIG_GRKERNSEC_DENYUSB)
+static int __maybe_unused __read_only one = 1;
+#endif
+
+#if defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_ROFS) || \
+	defined(CONFIG_GRKERNSEC_DENYUSB)
+struct ctl_table grsecurity_table[] = {
+#ifdef CONFIG_GRKERNSEC_SYSCTL
+#ifdef CONFIG_GRKERNSEC_SYSCTL_DISTRO
+#ifdef CONFIG_GRKERNSEC_IO
+	{
+		.procname	= "disable_priv_io",
+		.data		= &grsec_disable_privio,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#endif
+#ifdef CONFIG_GRKERNSEC_LINK
+	{
+		.procname	= "linking_restrictions",
+		.data		= &grsec_enable_link,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_SYMLINKOWN
+	{
+		.procname	= "enforce_symlinksifowner",
+		.data		= &grsec_enable_symlinkown,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "symlinkown_gid",
+		.data		= &grsec_symlinkown_gid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_BRUTE
+	{
+		.procname	= "deter_bruteforce",
+		.data		= &grsec_enable_brute,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_FIFO
+	{
+		.procname	= "fifo_restrictions",
+		.data		= &grsec_enable_fifo,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC
+	{
+		.procname	= "ptrace_readexec",
+		.data		= &grsec_enable_ptrace_readexec,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_SETXID
+	{
+		.procname	= "consistent_setxid",
+		.data		= &grsec_enable_setxid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	{
+		.procname	= "ip_blackhole",
+		.data		= &grsec_enable_blackhole,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "lastack_retries",
+		.data		= &grsec_lastack_retries,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_EXECLOG
+	{
+		.procname	= "exec_logging",
+		.data		= &grsec_enable_execlog,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+	{
+		.procname	= "rwxmap_logging",
+		.data		= &grsec_enable_log_rwxmaps,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_SIGNAL
+	{
+		.procname	= "signal_logging",
+		.data		= &grsec_enable_signal,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_FORKFAIL
+	{
+		.procname	= "forkfail_logging",
+		.data		= &grsec_enable_forkfail,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_TIME
+	{
+		.procname	= "timechange_logging",
+		.data		= &grsec_enable_time,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT
+	{
+		.procname	= "chroot_deny_shmat",
+		.data		= &grsec_enable_chroot_shmat,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX
+	{
+		.procname	= "chroot_deny_unix",
+		.data		= &grsec_enable_chroot_unix,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT
+	{
+		.procname	= "chroot_deny_mount",
+		.data		= &grsec_enable_chroot_mount,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
+	{
+		.procname	= "chroot_deny_fchdir",
+		.data		= &grsec_enable_chroot_fchdir,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE
+	{
+		.procname	= "chroot_deny_chroot",
+		.data		= &grsec_enable_chroot_double,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT
+	{
+		.procname	= "chroot_deny_pivot",
+		.data		= &grsec_enable_chroot_pivot,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR
+	{
+		.procname	= "chroot_enforce_chdir",
+		.data		= &grsec_enable_chroot_chdir,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD
+	{
+		.procname	= "chroot_deny_chmod",
+		.data		= &grsec_enable_chroot_chmod,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD
+	{
+		.procname	= "chroot_deny_mknod",
+		.data		= &grsec_enable_chroot_mknod,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
+	{
+		.procname	= "chroot_restrict_nice",
+		.data		= &grsec_enable_chroot_nice,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG
+	{
+		.procname	= "chroot_execlog",
+		.data		= &grsec_enable_chroot_execlog,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
+	{
+		.procname	= "chroot_caps",
+		.data		= &grsec_enable_chroot_caps,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL
+	{
+		.procname	= "chroot_deny_sysctl",
+		.data		= &grsec_enable_chroot_sysctl,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_TPE
+	{
+		.procname	= "tpe",
+		.data		= &grsec_enable_tpe,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "tpe_gid",
+		.data		= &grsec_tpe_gid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_TPE_INVERT
+	{
+		.procname	= "tpe_invert",
+		.data		= &grsec_enable_tpe_invert,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_TPE_ALL
+	{
+		.procname	= "tpe_restrict_all",
+		.data		= &grsec_enable_tpe_all,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_SOCKET_ALL
+	{
+		.procname	= "socket_all",
+		.data		= &grsec_enable_socket_all,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "socket_all_gid",
+		.data		= &grsec_socket_all_gid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT
+	{
+		.procname	= "socket_client",
+		.data		= &grsec_enable_socket_client,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "socket_client_gid",
+		.data		= &grsec_socket_client_gid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
+	{
+		.procname	= "socket_server",
+		.data		= &grsec_enable_socket_server,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "socket_server_gid",
+		.data		= &grsec_socket_server_gid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_GROUP
+	{
+		.procname	= "audit_group",
+		.data		= &grsec_enable_group,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+	{
+		.procname	= "audit_gid",
+		.data		= &grsec_audit_gid,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR
+	{
+		.procname	= "audit_chdir",
+		.data		= &grsec_enable_chdir,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
+	{
+		.procname	= "audit_mount",
+		.data		= &grsec_enable_mount,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_DMESG
+	{
+		.procname	= "dmesg",
+		.data		= &grsec_enable_dmesg,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
+	{
+		.procname	= "chroot_findtask",
+		.data		= &grsec_enable_chroot_findtask,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_RESLOG
+	{
+		.procname	= "resource_logging",
+		.data		= &grsec_resource_logging,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE
+	{
+		.procname	= "audit_ptrace",
+		.data		= &grsec_enable_audit_ptrace,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
+	{
+		.procname	= "harden_ptrace",
+		.data		= &grsec_enable_harden_ptrace,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_HARDEN_IPC
+	{
+		.procname	= "harden_ipc",
+		.data		= &grsec_enable_harden_ipc,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+	{
+		.procname	= "grsec_lock",
+		.data		= &grsec_lock,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+#ifdef CONFIG_GRKERNSEC_ROFS
+	{
+		.procname	= "romount_protect",
+		.data		= &grsec_enable_rofs,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec_minmax,
+		.extra1		= &one,
+		.extra2		= &one,
+	},
+#endif
+#if defined(CONFIG_GRKERNSEC_DENYUSB) && !defined(CONFIG_GRKERNSEC_DENYUSB_FORCE)
+	{
+		.procname	= "deny_new_usb",
+		.data		= &grsec_deny_new_usb,
+		.maxlen		= sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+#endif
+	{ }
+};
+#endif
diff --git a/grsecurity/grsec_time.c b/grsecurity/grsec_time.c
new file mode 100644
index 0000000..61b514e
--- /dev/null
+++ b/grsecurity/grsec_time.c
@@ -0,0 +1,16 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/grinternal.h>
+#include <linux/module.h>
+
+void
+gr_log_timechange(void)
+{
+#ifdef CONFIG_GRKERNSEC_TIME
+	if (grsec_enable_time)
+		gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_TIME_MSG);
+#endif
+	return;
+}
+
+EXPORT_SYMBOL_GPL(gr_log_timechange);
diff --git a/grsecurity/grsec_tpe.c b/grsecurity/grsec_tpe.c
new file mode 100644
index 0000000..d1953de
--- /dev/null
+++ b/grsecurity/grsec_tpe.c
@@ -0,0 +1,78 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/file.h>
+#include <linux/fs.h>
+#include <linux/grinternal.h>
+
+extern int gr_acl_tpe_check(void);
+
+int
+gr_tpe_allow(const struct file *file)
+{
+#ifdef CONFIG_GRKERNSEC
+	struct inode *inode = file->f_path.dentry->d_parent->d_inode;
+	struct inode *file_inode = file->f_path.dentry->d_inode;
+	const struct cred *cred = current_cred();
+	char *msg = NULL;
+	char *msg2 = NULL;
+
+	// never restrict root
+	if (gr_is_global_root(cred->uid))
+		return 1;
+
+	if (grsec_enable_tpe) {
+#ifdef CONFIG_GRKERNSEC_TPE_INVERT
+		if (grsec_enable_tpe_invert && !in_group_p(grsec_tpe_gid))
+			msg = "not being in trusted group";
+		else if (!grsec_enable_tpe_invert && in_group_p(grsec_tpe_gid))
+			msg = "being in untrusted group";
+#else
+		if (in_group_p(grsec_tpe_gid))
+			msg = "being in untrusted group";
+#endif
+	}
+	if (!msg && gr_acl_tpe_check())
+		msg = "being in untrusted role";
+
+	// not in any affected group/role
+	if (!msg)
+		goto next_check;
+
+	if (gr_is_global_nonroot(inode->i_uid))
+		msg2 = "file in non-root-owned directory";
+	else if (inode->i_mode & S_IWOTH)
+		msg2 = "file in world-writable directory";
+	else if (inode->i_mode & S_IWGRP)
+		msg2 = "file in group-writable directory";
+	else if (file_inode->i_mode & S_IWOTH)
+		msg2 = "file is world-writable";
+
+	if (msg && msg2) {
+		char fullmsg[70] = {0};
+		snprintf(fullmsg, sizeof(fullmsg)-1, "%s and %s", msg, msg2);
+		gr_log_str_fs(GR_DONT_AUDIT, GR_EXEC_TPE_MSG, fullmsg, file->f_path.dentry, file->f_path.mnt);
+		return 0;
+	}
+	msg = NULL;
+next_check:
+#ifdef CONFIG_GRKERNSEC_TPE_ALL
+	if (!grsec_enable_tpe || !grsec_enable_tpe_all)
+		return 1;
+
+	if (gr_is_global_nonroot(inode->i_uid) && !uid_eq(inode->i_uid, cred->uid))
+		msg = "directory not owned by user";
+	else if (inode->i_mode & S_IWOTH)
+		msg = "file in world-writable directory";
+	else if (inode->i_mode & S_IWGRP)
+		msg = "file in group-writable directory";
+	else if (file_inode->i_mode & S_IWOTH)
+		msg = "file is world-writable";
+
+	if (msg) {
+		gr_log_str_fs(GR_DONT_AUDIT, GR_EXEC_TPE_MSG, msg, file->f_path.dentry, file->f_path.mnt);
+		return 0;
+	}
+#endif
+#endif
+	return 1;
+}
diff --git a/grsecurity/grsec_usb.c b/grsecurity/grsec_usb.c
new file mode 100644
index 0000000..ae02d8e
--- /dev/null
+++ b/grsecurity/grsec_usb.c
@@ -0,0 +1,15 @@
+#include <linux/kernel.h>
+#include <linux/grinternal.h>
+#include <linux/module.h>
+
+int gr_handle_new_usb(void)
+{
+#ifdef CONFIG_GRKERNSEC_DENYUSB
+	if (grsec_deny_new_usb) {
+		printk(KERN_ALERT "grsec: denied insert of new USB device\n");
+		return 1;
+	}
+#endif
+	return 0;
+}
+EXPORT_SYMBOL_GPL(gr_handle_new_usb);
diff --git a/grsecurity/grsum.c b/grsecurity/grsum.c
new file mode 100644
index 0000000..158b330
--- /dev/null
+++ b/grsecurity/grsum.c
@@ -0,0 +1,64 @@
+#include <linux/err.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/scatterlist.h>
+#include <linux/crypto.h>
+#include <linux/gracl.h>
+
+
+#if !defined(CONFIG_CRYPTO) || defined(CONFIG_CRYPTO_MODULE) || !defined(CONFIG_CRYPTO_SHA256) || defined(CONFIG_CRYPTO_SHA256_MODULE)
+#error "crypto and sha256 must be built into the kernel"
+#endif
+
+int
+chkpw(struct gr_arg *entry, unsigned char *salt, unsigned char *sum)
+{
+	struct crypto_hash *tfm;
+	struct hash_desc desc;
+	struct scatterlist sg[2];
+	unsigned char temp_sum[GR_SHA_LEN] __attribute__((aligned(__alignof__(unsigned long))));
+	unsigned long *tmpsumptr = (unsigned long *)temp_sum;
+	unsigned long *sumptr = (unsigned long *)sum;
+	int cryptres;
+	int retval = 1;
+	volatile int mismatched = 0;
+	volatile int dummy = 0;
+	unsigned int i;
+
+	tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
+	if (IS_ERR(tfm)) {
+		/* should never happen, since sha256 should be built in */
+		memset(entry->pw, 0, GR_PW_LEN);
+		return 1;
+	}
+
+	sg_init_table(sg, 2);
+	sg_set_buf(&sg[0], salt, GR_SALT_LEN);
+	sg_set_buf(&sg[1], entry->pw, strlen(entry->pw));
+
+	desc.tfm = tfm;
+	desc.flags = 0;
+
+	cryptres = crypto_hash_digest(&desc, sg, GR_SALT_LEN + strlen(entry->pw),
+					temp_sum);
+
+	memset(entry->pw, 0, GR_PW_LEN);
+
+	if (cryptres)
+		goto out;
+
+	for (i = 0; i < GR_SHA_LEN/sizeof(tmpsumptr[0]); i++)
+		if (sumptr[i] != tmpsumptr[i])
+			mismatched = 1;
+		else
+			dummy = 1;	// waste a cycle
+
+	if (!mismatched)
+		retval = dummy - 1;
+
+out:
+	crypto_free_hash(tfm);
+
+	return retval;
+}
diff --git a/include/asm-generic/4level-fixup.h b/include/asm-generic/4level-fixup.h
index 77ff547..181834f 100644
--- a/include/asm-generic/4level-fixup.h
+++ b/include/asm-generic/4level-fixup.h
@@ -13,8 +13,10 @@
 #define pmd_alloc(mm, pud, address) \
 	((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \
  		NULL: pmd_offset(pud, address))
+#define pmd_alloc_kernel(mm, pud, address) pmd_alloc((mm), (pud), (address))
 
 #define pud_alloc(mm, pgd, address)	(pgd)
+#define pud_alloc_kernel(mm, pgd, address)	pud_alloc((mm), (pgd), (address))
 #define pud_offset(pgd, start)		(pgd)
 #define pud_none(pud)			0
 #define pud_bad(pud)			0
diff --git a/include/asm-generic/atomic-long.h b/include/asm-generic/atomic-long.h
index b7babf0..97f4c4f 100644
--- a/include/asm-generic/atomic-long.h
+++ b/include/asm-generic/atomic-long.h
@@ -22,6 +22,12 @@
 
 typedef atomic64_t atomic_long_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef atomic64_unchecked_t atomic_long_unchecked_t;
+#else
+typedef atomic64_t atomic_long_unchecked_t;
+#endif
+
 #define ATOMIC_LONG_INIT(i)	ATOMIC64_INIT(i)
 
 static inline long atomic_long_read(atomic_long_t *l)
@@ -31,6 +37,15 @@ static inline long atomic_long_read(atomic_long_t *l)
 	return (long)atomic64_read(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline long atomic_long_read_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	return (long)atomic64_read_unchecked(v);
+}
+#endif
+
 static inline void atomic_long_set(atomic_long_t *l, long i)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -38,6 +53,15 @@ static inline void atomic_long_set(atomic_long_t *l, long i)
 	atomic64_set(v, i);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_set_unchecked(atomic_long_unchecked_t *l, long i)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	atomic64_set_unchecked(v, i);
+}
+#endif
+
 static inline void atomic_long_inc(atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -45,6 +69,15 @@ static inline void atomic_long_inc(atomic_long_t *l)
 	atomic64_inc(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_inc_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	atomic64_inc_unchecked(v);
+}
+#endif
+
 static inline void atomic_long_dec(atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -52,6 +85,15 @@ static inline void atomic_long_dec(atomic_long_t *l)
 	atomic64_dec(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_dec_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	atomic64_dec_unchecked(v);
+}
+#endif
+
 static inline void atomic_long_add(long i, atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -59,6 +101,15 @@ static inline void atomic_long_add(long i, atomic_long_t *l)
 	atomic64_add(i, v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_add_unchecked(long i, atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	atomic64_add_unchecked(i, v);
+}
+#endif
+
 static inline void atomic_long_sub(long i, atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -66,6 +117,15 @@ static inline void atomic_long_sub(long i, atomic_long_t *l)
 	atomic64_sub(i, v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_sub_unchecked(long i, atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	atomic64_sub_unchecked(i, v);
+}
+#endif
+
 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -94,13 +154,22 @@ static inline int atomic_long_add_negative(long i, atomic_long_t *l)
 	return atomic64_add_negative(i, v);
 }
 
-static inline long atomic_long_add_return(long i, atomic_long_t *l)
+static inline long __intentional_overflow(-1) atomic_long_add_return(long i, atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
 
 	return (long)atomic64_add_return(i, v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline long atomic_long_add_return_unchecked(long i, atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	return (long)atomic64_add_return_unchecked(i, v);
+}
+#endif
+
 static inline long atomic_long_sub_return(long i, atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -115,6 +184,15 @@ static inline long atomic_long_inc_return(atomic_long_t *l)
 	return (long)atomic64_inc_return(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline long atomic_long_inc_return_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
+
+	return (long)atomic64_inc_return_unchecked(v);
+}
+#endif
+
 static inline long atomic_long_dec_return(atomic_long_t *l)
 {
 	atomic64_t *v = (atomic64_t *)l;
@@ -140,6 +218,12 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
 
 typedef atomic_t atomic_long_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef atomic_unchecked_t atomic_long_unchecked_t;
+#else
+typedef atomic_t atomic_long_unchecked_t;
+#endif
+
 #define ATOMIC_LONG_INIT(i)	ATOMIC_INIT(i)
 static inline long atomic_long_read(atomic_long_t *l)
 {
@@ -148,6 +232,15 @@ static inline long atomic_long_read(atomic_long_t *l)
 	return (long)atomic_read(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline long atomic_long_read_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	return (long)atomic_read_unchecked(v);
+}
+#endif
+
 static inline void atomic_long_set(atomic_long_t *l, long i)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -155,6 +248,15 @@ static inline void atomic_long_set(atomic_long_t *l, long i)
 	atomic_set(v, i);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_set_unchecked(atomic_long_unchecked_t *l, long i)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	atomic_set_unchecked(v, i);
+}
+#endif
+
 static inline void atomic_long_inc(atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -162,6 +264,15 @@ static inline void atomic_long_inc(atomic_long_t *l)
 	atomic_inc(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_inc_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	atomic_inc_unchecked(v);
+}
+#endif
+
 static inline void atomic_long_dec(atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -169,6 +280,15 @@ static inline void atomic_long_dec(atomic_long_t *l)
 	atomic_dec(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_dec_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	atomic_dec_unchecked(v);
+}
+#endif
+
 static inline void atomic_long_add(long i, atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -176,6 +296,15 @@ static inline void atomic_long_add(long i, atomic_long_t *l)
 	atomic_add(i, v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_add_unchecked(long i, atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	atomic_add_unchecked(i, v);
+}
+#endif
+
 static inline void atomic_long_sub(long i, atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -183,6 +312,15 @@ static inline void atomic_long_sub(long i, atomic_long_t *l)
 	atomic_sub(i, v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void atomic_long_sub_unchecked(long i, atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	atomic_sub_unchecked(i, v);
+}
+#endif
+
 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -218,6 +356,16 @@ static inline long atomic_long_add_return(long i, atomic_long_t *l)
 	return (long)atomic_add_return(i, v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline long atomic_long_add_return_unchecked(long i, atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	return (long)atomic_add_return_unchecked(i, v);
+}
+
+#endif
+
 static inline long atomic_long_sub_return(long i, atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -232,6 +380,15 @@ static inline long atomic_long_inc_return(atomic_long_t *l)
 	return (long)atomic_inc_return(v);
 }
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline long atomic_long_inc_return_unchecked(atomic_long_unchecked_t *l)
+{
+	atomic_unchecked_t *v = (atomic_unchecked_t *)l;
+
+	return (long)atomic_inc_return_unchecked(v);
+}
+#endif
+
 static inline long atomic_long_dec_return(atomic_long_t *l)
 {
 	atomic_t *v = (atomic_t *)l;
@@ -255,4 +412,57 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
 
 #endif  /*  BITS_PER_LONG == 64  */
 
+#ifdef CONFIG_PAX_REFCOUNT
+static inline void pax_refcount_needs_these_functions(void)
+{
+	atomic_read_unchecked((atomic_unchecked_t *)NULL);
+	atomic_set_unchecked((atomic_unchecked_t *)NULL, 0);
+	atomic_add_unchecked(0, (atomic_unchecked_t *)NULL);
+	atomic_sub_unchecked(0, (atomic_unchecked_t *)NULL);
+	atomic_inc_unchecked((atomic_unchecked_t *)NULL);
+	(void)atomic_inc_and_test_unchecked((atomic_unchecked_t *)NULL);
+	atomic_inc_return_unchecked((atomic_unchecked_t *)NULL);
+	atomic_add_return_unchecked(0, (atomic_unchecked_t *)NULL);
+	atomic_dec_unchecked((atomic_unchecked_t *)NULL);
+	atomic_cmpxchg_unchecked((atomic_unchecked_t *)NULL, 0, 0);
+	(void)atomic_xchg_unchecked((atomic_unchecked_t *)NULL, 0);
+#ifdef CONFIG_X86
+	atomic_clear_mask_unchecked(0, NULL);
+	atomic_set_mask_unchecked(0, NULL);
+#endif
+
+	atomic_long_read_unchecked((atomic_long_unchecked_t *)NULL);
+	atomic_long_set_unchecked((atomic_long_unchecked_t *)NULL, 0);
+	atomic_long_add_unchecked(0, (atomic_long_unchecked_t *)NULL);
+	atomic_long_sub_unchecked(0, (atomic_long_unchecked_t *)NULL);
+	atomic_long_inc_unchecked((atomic_long_unchecked_t *)NULL);
+	atomic_long_add_return_unchecked(0, (atomic_long_unchecked_t *)NULL);
+	atomic_long_inc_return_unchecked((atomic_long_unchecked_t *)NULL);
+	atomic_long_dec_unchecked((atomic_long_unchecked_t *)NULL);
+}
+#else
+#define atomic_read_unchecked(v) atomic_read(v)
+#define atomic_set_unchecked(v, i) atomic_set((v), (i))
+#define atomic_add_unchecked(i, v) atomic_add((i), (v))
+#define atomic_sub_unchecked(i, v) atomic_sub((i), (v))
+#define atomic_inc_unchecked(v) atomic_inc(v)
+#define atomic_inc_and_test_unchecked(v) atomic_inc_and_test(v)
+#define atomic_inc_return_unchecked(v) atomic_inc_return(v)
+#define atomic_add_return_unchecked(i, v) atomic_add_return((i), (v))
+#define atomic_dec_unchecked(v) atomic_dec(v)
+#define atomic_cmpxchg_unchecked(v, o, n) atomic_cmpxchg((v), (o), (n))
+#define atomic_xchg_unchecked(v, i) atomic_xchg((v), (i))
+#define atomic_clear_mask_unchecked(mask, v) atomic_clear_mask((mask), (v))
+#define atomic_set_mask_unchecked(mask, v) atomic_set_mask((mask), (v))
+
+#define atomic_long_read_unchecked(v) atomic_long_read(v)
+#define atomic_long_set_unchecked(v, i) atomic_long_set((v), (i))
+#define atomic_long_add_unchecked(i, v) atomic_long_add((i), (v))
+#define atomic_long_sub_unchecked(i, v) atomic_long_sub((i), (v))
+#define atomic_long_inc_unchecked(v) atomic_long_inc(v)
+#define atomic_long_add_return_unchecked(i, v) atomic_long_add_return((i), (v))
+#define atomic_long_inc_return_unchecked(v) atomic_long_inc_return(v)
+#define atomic_long_dec_unchecked(v) atomic_long_dec(v)
+#endif
+
 #endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */
diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
index 9c79e76..9f7827d 100644
--- a/include/asm-generic/atomic.h
+++ b/include/asm-generic/atomic.h
@@ -154,7 +154,7 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
  * Atomically clears the bits set in @mask from @v
  */
 #ifndef atomic_clear_mask
-static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
 	unsigned long flags;
 
diff --git a/include/asm-generic/atomic64.h b/include/asm-generic/atomic64.h
index b18ce4f..2ee2843 100644
--- a/include/asm-generic/atomic64.h
+++ b/include/asm-generic/atomic64.h
@@ -16,6 +16,8 @@ typedef struct {
 	long long counter;
 } atomic64_t;
 
+typedef atomic64_t atomic64_unchecked_t;
+
 #define ATOMIC64_INIT(i)	{ (i) }
 
 extern long long atomic64_read(const atomic64_t *v);
@@ -39,4 +41,14 @@ extern int	 atomic64_add_unless(atomic64_t *v, long long a, long long u);
 #define atomic64_dec_and_test(v)	(atomic64_dec_return((v)) == 0)
 #define atomic64_inc_not_zero(v) 	atomic64_add_unless((v), 1LL, 0LL)
 
+#define atomic64_read_unchecked(v) atomic64_read(v)
+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
+#define atomic64_inc_unchecked(v) atomic64_inc(v)
+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
+#define atomic64_dec_unchecked(v) atomic64_dec(v)
+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
+
 #endif  /*  _ASM_GENERIC_ATOMIC64_H  */
diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h
index 1402fa8..025a736 100644
--- a/include/asm-generic/barrier.h
+++ b/include/asm-generic/barrier.h
@@ -74,7 +74,7 @@
 do {									\
 	compiletime_assert_atomic_type(*p);				\
 	smp_mb();							\
-	ACCESS_ONCE(*p) = (v);						\
+	ACCESS_ONCE_RW(*p) = (v);					\
 } while (0)
 
 #define smp_load_acquire(p)						\
diff --git a/include/asm-generic/bitops/__fls.h b/include/asm-generic/bitops/__fls.h
index a60a7cc..0fe12f2 100644
--- a/include/asm-generic/bitops/__fls.h
+++ b/include/asm-generic/bitops/__fls.h
@@ -9,7 +9,7 @@
  *
  * Undefined if no set bit exists, so code should check against 0 first.
  */
-static __always_inline unsigned long __fls(unsigned long word)
+static __always_inline unsigned long __intentional_overflow(-1) __fls(unsigned long word)
 {
 	int num = BITS_PER_LONG - 1;
 
diff --git a/include/asm-generic/bitops/fls.h b/include/asm-generic/bitops/fls.h
index 0576d1f..dad6c71 100644
--- a/include/asm-generic/bitops/fls.h
+++ b/include/asm-generic/bitops/fls.h
@@ -9,7 +9,7 @@
  * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
  */
 
-static __always_inline int fls(int x)
+static __always_inline int __intentional_overflow(-1) fls(int x)
 {
 	int r = 32;
 
diff --git a/include/asm-generic/bitops/fls64.h b/include/asm-generic/bitops/fls64.h
index b097cf8..3d40e14 100644
--- a/include/asm-generic/bitops/fls64.h
+++ b/include/asm-generic/bitops/fls64.h
@@ -15,7 +15,7 @@
  * at position 64.
  */
 #if BITS_PER_LONG == 32
-static __always_inline int fls64(__u64 x)
+static __always_inline int __intentional_overflow(-1) fls64(__u64 x)
 {
 	__u32 h = x >> 32;
 	if (h)
@@ -23,7 +23,7 @@ static __always_inline int fls64(__u64 x)
 	return fls(x);
 }
 #elif BITS_PER_LONG == 64
-static __always_inline int fls64(__u64 x)
+static __always_inline int __intentional_overflow(-1) fls64(__u64 x)
 {
 	if (x == 0)
 		return 0;
diff --git a/include/asm-generic/cache.h b/include/asm-generic/cache.h
index 1bfcfe5..e04c5c9 100644
--- a/include/asm-generic/cache.h
+++ b/include/asm-generic/cache.h
@@ -6,7 +6,7 @@
  * cache lines need to provide their own cache.h.
  */
 
-#define L1_CACHE_SHIFT		5
-#define L1_CACHE_BYTES		(1 << L1_CACHE_SHIFT)
+#define L1_CACHE_SHIFT		5UL
+#define L1_CACHE_BYTES		(1UL << L1_CACHE_SHIFT)
 
 #endif /* __ASM_GENERIC_CACHE_H */
diff --git a/include/asm-generic/emergency-restart.h b/include/asm-generic/emergency-restart.h
index 0d68a1e..b74a761 100644
--- a/include/asm-generic/emergency-restart.h
+++ b/include/asm-generic/emergency-restart.h
@@ -1,7 +1,7 @@
 #ifndef _ASM_GENERIC_EMERGENCY_RESTART_H
 #define _ASM_GENERIC_EMERGENCY_RESTART_H
 
-static inline void machine_emergency_restart(void)
+static inline __noreturn void machine_emergency_restart(void)
 {
 	machine_restart(NULL);
 }
diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 975e1cc..0b8a083 100644
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -289,7 +289,7 @@ static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
  * These are pretty trivial
  */
 #ifndef virt_to_phys
-static inline unsigned long virt_to_phys(volatile void *address)
+static inline unsigned long __intentional_overflow(-1) virt_to_phys(volatile void *address)
 {
 	return __pa((unsigned long)address);
 }
diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h
index 90f99c7..00ce236 100644
--- a/include/asm-generic/kmap_types.h
+++ b/include/asm-generic/kmap_types.h
@@ -2,9 +2,9 @@
 #define _ASM_GENERIC_KMAP_TYPES_H
 
 #ifdef __WITH_KM_FENCE
-# define KM_TYPE_NR 41
+# define KM_TYPE_NR 42
 #else
-# define KM_TYPE_NR 20
+# define KM_TYPE_NR 21
 #endif
 
 #endif
diff --git a/include/asm-generic/local.h b/include/asm-generic/local.h
index 9ceb03b..62b0b8f 100644
--- a/include/asm-generic/local.h
+++ b/include/asm-generic/local.h
@@ -23,24 +23,37 @@ typedef struct
 	atomic_long_t a;
 } local_t;
 
+typedef struct {
+	atomic_long_unchecked_t a;
+} local_unchecked_t;
+
 #define LOCAL_INIT(i)	{ ATOMIC_LONG_INIT(i) }
 
 #define local_read(l)	atomic_long_read(&(l)->a)
+#define local_read_unchecked(l)	atomic_long_read_unchecked(&(l)->a)
 #define local_set(l,i)	atomic_long_set((&(l)->a),(i))
+#define local_set_unchecked(l,i)	atomic_long_set_unchecked((&(l)->a),(i))
 #define local_inc(l)	atomic_long_inc(&(l)->a)
+#define local_inc_unchecked(l)	atomic_long_inc_unchecked(&(l)->a)
 #define local_dec(l)	atomic_long_dec(&(l)->a)
+#define local_dec_unchecked(l)	atomic_long_dec_unchecked(&(l)->a)
 #define local_add(i,l)	atomic_long_add((i),(&(l)->a))
+#define local_add_unchecked(i,l)	atomic_long_add_unchecked((i),(&(l)->a))
 #define local_sub(i,l)	atomic_long_sub((i),(&(l)->a))
+#define local_sub_unchecked(i,l)	atomic_long_sub_unchecked((i),(&(l)->a))
 
 #define local_sub_and_test(i, l) atomic_long_sub_and_test((i), (&(l)->a))
 #define local_dec_and_test(l) atomic_long_dec_and_test(&(l)->a)
 #define local_inc_and_test(l) atomic_long_inc_and_test(&(l)->a)
 #define local_add_negative(i, l) atomic_long_add_negative((i), (&(l)->a))
 #define local_add_return(i, l) atomic_long_add_return((i), (&(l)->a))
+#define local_add_return_unchecked(i, l) atomic_long_add_return_unchecked((i), (&(l)->a))
 #define local_sub_return(i, l) atomic_long_sub_return((i), (&(l)->a))
 #define local_inc_return(l) atomic_long_inc_return(&(l)->a)
+#define local_dec_return(l) atomic_long_dec_return(&(l)->a)
 
 #define local_cmpxchg(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n))
+#define local_cmpxchg_unchecked(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n))
 #define local_xchg(l, n) atomic_long_xchg((&(l)->a), (n))
 #define local_add_unless(l, _a, u) atomic_long_add_unless((&(l)->a), (_a), (u))
 #define local_inc_not_zero(l) atomic_long_inc_not_zero(&(l)->a)
diff --git a/include/asm-generic/pgtable-nopmd.h b/include/asm-generic/pgtable-nopmd.h
index 725612b..9cc513a 100644
--- a/include/asm-generic/pgtable-nopmd.h
+++ b/include/asm-generic/pgtable-nopmd.h
@@ -1,14 +1,19 @@
 #ifndef _PGTABLE_NOPMD_H
 #define _PGTABLE_NOPMD_H
 
-#ifndef __ASSEMBLY__
-
 #include <asm-generic/pgtable-nopud.h>
 
-struct mm_struct;
-
 #define __PAGETABLE_PMD_FOLDED
 
+#define PMD_SHIFT	PUD_SHIFT
+#define PTRS_PER_PMD	1
+#define PMD_SIZE  	(_AC(1,UL) << PMD_SHIFT)
+#define PMD_MASK  	(~(PMD_SIZE-1))
+
+#ifndef __ASSEMBLY__
+
+struct mm_struct;
+
 /*
  * Having the pmd type consist of a pud gets the size right, and allows
  * us to conceptually access the pud entry that this pmd is folded into
@@ -16,11 +21,6 @@ struct mm_struct;
  */
 typedef struct { pud_t pud; } pmd_t;
 
-#define PMD_SHIFT	PUD_SHIFT
-#define PTRS_PER_PMD	1
-#define PMD_SIZE  	(1UL << PMD_SHIFT)
-#define PMD_MASK  	(~(PMD_SIZE-1))
-
 /*
  * The "pud_xxx()" functions here are trivial for a folded two-level
  * setup: the pmd is never bad, and a pmd always exists (as it's folded
diff --git a/include/asm-generic/pgtable-nopud.h b/include/asm-generic/pgtable-nopud.h
index 810431d..0ec4804f 100644
--- a/include/asm-generic/pgtable-nopud.h
+++ b/include/asm-generic/pgtable-nopud.h
@@ -1,10 +1,15 @@
 #ifndef _PGTABLE_NOPUD_H
 #define _PGTABLE_NOPUD_H
 
-#ifndef __ASSEMBLY__
-
 #define __PAGETABLE_PUD_FOLDED
 
+#define PUD_SHIFT	PGDIR_SHIFT
+#define PTRS_PER_PUD	1
+#define PUD_SIZE  	(_AC(1,UL) << PUD_SHIFT)
+#define PUD_MASK  	(~(PUD_SIZE-1))
+
+#ifndef __ASSEMBLY__
+
 /*
  * Having the pud type consist of a pgd gets the size right, and allows
  * us to conceptually access the pgd entry that this pud is folded into
@@ -12,11 +17,6 @@
  */
 typedef struct { pgd_t pgd; } pud_t;
 
-#define PUD_SHIFT	PGDIR_SHIFT
-#define PTRS_PER_PUD	1
-#define PUD_SIZE  	(1UL << PUD_SHIFT)
-#define PUD_MASK  	(~(PUD_SIZE-1))
-
 /*
  * The "pgd_xxx()" functions here are trivial for a folded two-level
  * setup: the pud is never bad, and a pud always exists (as it's folded
@@ -29,6 +29,7 @@ static inline void pgd_clear(pgd_t *pgd)	{ }
 #define pud_ERROR(pud)				(pgd_ERROR((pud).pgd))
 
 #define pgd_populate(mm, pgd, pud)		do { } while (0)
+#define pgd_populate_kernel(mm, pgd, pud)	do { } while (0)
 /*
  * (puds are folded into pgds so this doesn't get actually called,
  * but the define is needed for a generic inline function.)
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 53b2acc..f4568e7 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -819,6 +819,22 @@ static inline void pmdp_set_numa(struct mm_struct *mm, unsigned long addr,
 }
 #endif /* CONFIG_NUMA_BALANCING */
 
+#ifndef __HAVE_ARCH_PAX_OPEN_KERNEL
+#ifdef CONFIG_PAX_KERNEXEC
+#error KERNEXEC requires pax_open_kernel
+#else
+static inline unsigned long pax_open_kernel(void) { return 0; }
+#endif
+#endif
+
+#ifndef __HAVE_ARCH_PAX_CLOSE_KERNEL
+#ifdef CONFIG_PAX_KERNEXEC
+#error KERNEXEC requires pax_close_kernel
+#else
+static inline unsigned long pax_close_kernel(void) { return 0; }
+#endif
+#endif
+
 #endif /* CONFIG_MMU */
 
 #endif /* !__ASSEMBLY__ */
diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
index 72d8803..cb9749c 100644
--- a/include/asm-generic/uaccess.h
+++ b/include/asm-generic/uaccess.h
@@ -343,4 +343,20 @@ clear_user(void __user *to, unsigned long n)
 	return __clear_user(to, n);
 }
 
+#ifndef __HAVE_ARCH_PAX_OPEN_USERLAND
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#error UDEREF requires pax_open_userland
+#else
+static inline unsigned long pax_open_userland(void) { return 0; }
+#endif
+#endif
+
+#ifndef __HAVE_ARCH_PAX_CLOSE_USERLAND
+#ifdef CONFIG_PAX_MEMORY_UDEREF
+#error UDEREF requires pax_close_userland
+#else
+static inline unsigned long pax_close_userland(void) { return 0; }
+#endif
+#endif
+
 #endif /* __ASM_GENERIC_UACCESS_H */
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index c1c0b0c..05c9588 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -231,6 +231,7 @@
 	.rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {		\
 		VMLINUX_SYMBOL(__start_rodata) = .;			\
 		*(.rodata) *(.rodata.*)					\
+		*(.data..read_only)					\
 		*(__vermagic)		/* Kernel version magic */	\
 		. = ALIGN(8);						\
 		VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .;		\
@@ -719,17 +720,18 @@
  * section in the linker script will go there too.  @phdr should have
  * a leading colon.
  *
- * Note that this macros defines __per_cpu_load as an absolute symbol.
+ * Note that this macros defines per_cpu_load as an absolute symbol.
  * If there is no need to put the percpu section at a predetermined
  * address, use PERCPU_SECTION.
  */
 #define PERCPU_VADDR(cacheline, vaddr, phdr)				\
-	VMLINUX_SYMBOL(__per_cpu_load) = .;				\
-	.data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)		\
+	per_cpu_load = .;						\
+	.data..percpu vaddr : AT(VMLINUX_SYMBOL(per_cpu_load)		\
 				- LOAD_OFFSET) {			\
+		VMLINUX_SYMBOL(__per_cpu_load) = . + per_cpu_load;	\
 		PERCPU_INPUT(cacheline)					\
 	} phdr								\
-	. = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
+	. = VMLINUX_SYMBOL(per_cpu_load) + SIZEOF(.data..percpu);
 
 /**
  * PERCPU_SECTION - define output section for percpu area, simple version
diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
index 016c2f1..c4baa98 100644
--- a/include/crypto/algapi.h
+++ b/include/crypto/algapi.h
@@ -34,7 +34,7 @@ struct crypto_type {
 	unsigned int maskclear;
 	unsigned int maskset;
 	unsigned int tfmsize;
-};
+} __do_const;
 
 struct crypto_instance {
 	struct crypto_alg alg;
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 8af71a8..7fe6c19 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -68,6 +68,7 @@
 #include <linux/workqueue.h>
 #include <linux/poll.h>
 #include <asm/pgalloc.h>
+#include <asm/local.h>
 #include <drm/drm.h>
 #include <drm/drm_sarea.h>
 #include <drm/drm_vma_manager.h>
@@ -261,10 +262,12 @@ do {										\
  * \param cmd command.
  * \param arg argument.
  */
-typedef int drm_ioctl_t(struct drm_device *dev, void *data,
+typedef int (* const drm_ioctl_t)(struct drm_device *dev, void *data,
+			struct drm_file *file_priv);
+typedef int (* drm_ioctl_no_const_t)(struct drm_device *dev, void *data,
 			struct drm_file *file_priv);
 
-typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
+typedef int (* const drm_ioctl_compat_t)(struct file *filp, unsigned int cmd,
 			       unsigned long arg);
 
 #define DRM_IOCTL_NR(n)                _IOC_NR(n)
@@ -280,10 +283,10 @@ typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
 struct drm_ioctl_desc {
 	unsigned int cmd;
 	int flags;
-	drm_ioctl_t *func;
+	drm_ioctl_t func;
 	unsigned int cmd_drv;
 	const char *name;
-};
+} __do_const;
 
 /**
  * Creates a driver or general drm_ioctl_desc array entry for the given
@@ -983,7 +986,8 @@ struct drm_info_list {
 	int (*show)(struct seq_file*, void*); /** show callback */
 	u32 driver_features; /**< Required driver features for this entry */
 	void *data;
-};
+} __do_const;
+typedef struct drm_info_list __no_const drm_info_list_no_const;
 
 /**
  * debugfs node structure. This structure represents a debugfs file.
@@ -1067,7 +1071,7 @@ struct drm_device {
 
 	/** \name Usage Counters */
 	/*@{ */
-	int open_count;			/**< Outstanding files open, protected by drm_global_mutex. */
+	local_t open_count;		/**< Outstanding files open, protected by drm_global_mutex. */
 	spinlock_t buf_lock;		/**< For drm_device::buf_use and a few other things. */
 	int buf_use;			/**< Buffers in use -- cannot alloc */
 	atomic_t buf_alloc;		/**< Buffer allocation in progress */
diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
index a3d75fe..6802f9c 100644
--- a/include/drm/drm_crtc_helper.h
+++ b/include/drm/drm_crtc_helper.h
@@ -109,7 +109,7 @@ struct drm_encoder_helper_funcs {
 					    struct drm_connector *connector);
 	/* disable encoder when not in use - more explicit than dpms off */
 	void (*disable)(struct drm_encoder *encoder);
-};
+} __no_const;
 
 /**
  * drm_connector_helper_funcs - helper operations for connectors
diff --git a/include/drm/i915_pciids.h b/include/drm/i915_pciids.h
index a70d456..6ea07cd 100644
--- a/include/drm/i915_pciids.h
+++ b/include/drm/i915_pciids.h
@@ -37,7 +37,7 @@
  */
 #define INTEL_VGA_DEVICE(id, info) {		\
 	0x8086,	id,				\
-	~0, ~0,					\
+	PCI_ANY_ID, PCI_ANY_ID,			\
 	0x030000, 0xff0000,			\
 	(unsigned long) info }
 
diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
index 72dcbe8..8db58d7 100644
--- a/include/drm/ttm/ttm_memory.h
+++ b/include/drm/ttm/ttm_memory.h
@@ -48,7 +48,7 @@
 
 struct ttm_mem_shrink {
 	int (*do_shrink) (struct ttm_mem_shrink *);
-};
+} __no_const;
 
 /**
  * struct ttm_mem_global - Global memory accounting structure.
diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h
index 49a8284..9643967 100644
--- a/include/drm/ttm/ttm_page_alloc.h
+++ b/include/drm/ttm/ttm_page_alloc.h
@@ -80,6 +80,7 @@ void ttm_dma_page_alloc_fini(void);
  */
 extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data);
 
+struct device;
 extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev);
 extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev);
 
diff --git a/include/keys/asymmetric-subtype.h b/include/keys/asymmetric-subtype.h
index 4b840e8..155d235 100644
--- a/include/keys/asymmetric-subtype.h
+++ b/include/keys/asymmetric-subtype.h
@@ -37,7 +37,7 @@ struct asymmetric_key_subtype {
 	/* Verify the signature on a key of this subtype (optional) */
 	int (*verify_signature)(const struct key *key,
 				const struct public_key_signature *sig);
-};
+} __do_const;
 
 /**
  * asymmetric_key_subtype - Get the subtype from an asymmetric key
diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
index c1da539..1dcec55 100644
--- a/include/linux/atmdev.h
+++ b/include/linux/atmdev.h
@@ -28,7 +28,7 @@ struct compat_atm_iobuf {
 #endif
 
 struct k_atm_aal_stats {
-#define __HANDLE_ITEM(i) atomic_t i
+#define __HANDLE_ITEM(i) atomic_unchecked_t i
 	__AAL_STAT_ITEMS
 #undef __HANDLE_ITEM
 };
@@ -200,7 +200,7 @@ struct atmdev_ops { /* only send is required */
 	int (*change_qos)(struct atm_vcc *vcc,struct atm_qos *qos,int flags);
 	int (*proc_read)(struct atm_dev *dev,loff_t *pos,char *page);
 	struct module *owner;
-};
+} __do_const ;
 
 struct atmphy_ops {
 	int (*start)(struct atm_dev *dev);
diff --git a/include/linux/audit.h b/include/linux/audit.h
index 22cfddb..ab759e8 100644
--- a/include/linux/audit.h
+++ b/include/linux/audit.h
@@ -210,7 +210,7 @@ static inline void audit_ptrace(struct task_struct *t)
 extern unsigned int audit_serial(void);
 extern int auditsc_get_stamp(struct audit_context *ctx,
 			      struct timespec *t, unsigned int *serial);
-extern int audit_set_loginuid(kuid_t loginuid);
+extern int __intentional_overflow(-1) audit_set_loginuid(kuid_t loginuid);
 
 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
 {
diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
index 61f29e5..e67c658 100644
--- a/include/linux/binfmts.h
+++ b/include/linux/binfmts.h
@@ -44,7 +44,7 @@ struct linux_binprm {
 	unsigned interp_flags;
 	unsigned interp_data;
 	unsigned long loader, exec;
-};
+} __randomize_layout;
 
 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
@@ -73,8 +73,10 @@ struct linux_binfmt {
 	int (*load_binary)(struct linux_binprm *);
 	int (*load_shlib)(struct file *);
 	int (*core_dump)(struct coredump_params *cprm);
+	void (*handle_mprotect)(struct vm_area_struct *vma, unsigned long newflags);
+	void (*handle_mmap)(struct file *);
 	unsigned long min_coredump;	/* minimal dump size */
-};
+} __do_const __randomize_layout;
 
 extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
 
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index cbc5833..8123ebc 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -122,7 +122,7 @@ static inline __u64 ror64(__u64 word, unsigned int shift)
  * @word: value to rotate
  * @shift: bits to roll
  */
-static inline __u32 rol32(__u32 word, unsigned int shift)
+static inline __u32 __intentional_overflow(-1) rol32(__u32 word, unsigned int shift)
 {
 	return (word << shift) | (word >> (32 - shift));
 }
@@ -132,7 +132,7 @@ static inline __u32 rol32(__u32 word, unsigned int shift)
  * @word: value to rotate
  * @shift: bits to roll
  */
-static inline __u32 ror32(__u32 word, unsigned int shift)
+static inline __u32 __intentional_overflow(-1) ror32(__u32 word, unsigned int shift)
 {
 	return (word >> shift) | (word << (32 - shift));
 }
@@ -188,7 +188,7 @@ static inline __s32 sign_extend32(__u32 value, int index)
 	return (__s32)(value << shift) >> shift;
 }
 
-static inline unsigned fls_long(unsigned long l)
+static inline unsigned __intentional_overflow(-1) fls_long(unsigned long l)
 {
 	if (sizeof(l) == 4)
 		return fls(l);
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 8699bcf..279485d 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1625,7 +1625,7 @@ struct block_device_operations {
 	/* this callback is with swap_lock and sometimes page table lock held */
 	void (*swap_slot_free_notify) (struct block_device *, unsigned long);
 	struct module *owner;
-};
+} __do_const;
 
 extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,
 				 unsigned long);
diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index afc1343..9735539 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -25,7 +25,7 @@ struct blk_trace {
 	struct dentry *dropped_file;
 	struct dentry *msg_file;
 	struct list_head running_list;
-	atomic_t dropped;
+	atomic_unchecked_t dropped;
 };
 
 extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
diff --git a/include/linux/cache.h b/include/linux/cache.h
index 17e7e82..1d7da26 100644
--- a/include/linux/cache.h
+++ b/include/linux/cache.h
@@ -16,6 +16,14 @@
 #define __read_mostly
 #endif
 
+#ifndef __read_only
+#ifdef CONFIG_PAX_KERNEXEC
+#error KERNEXEC requires __read_only
+#else
+#define __read_only __read_mostly
+#endif
+#endif
+
 #ifndef ____cacheline_aligned
 #define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
 #endif
diff --git a/include/linux/capability.h b/include/linux/capability.h
index aa93e5e..985a1b0 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -214,9 +214,14 @@ extern bool has_ns_capability_noaudit(struct task_struct *t,
 extern bool capable(int cap);
 extern bool ns_capable(struct user_namespace *ns, int cap);
 extern bool capable_wrt_inode_uidgid(const struct inode *inode, int cap);
+extern bool capable_wrt_inode_uidgid_nolog(const struct inode *inode, int cap);
 extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap);
+extern bool capable_nolog(int cap);
+extern bool ns_capable_nolog(struct user_namespace *ns, int cap);
 
 /* audit system wants to get cap info from files as well */
 extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
 
+extern int is_privileged_binary(const struct dentry *dentry);
+
 #endif /* !_LINUX_CAPABILITY_H */
diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
index 8609d57..86e4d79 100644
--- a/include/linux/cdrom.h
+++ b/include/linux/cdrom.h
@@ -87,7 +87,6 @@ struct cdrom_device_ops {
 
 /* driver specifications */
 	const int capability;   /* capability flags */
-	int n_minors;           /* number of active minor devices */
 	/* handle uniform packets for scsi type devices (scsi,atapi) */
 	int (*generic_packet) (struct cdrom_device_info *,
 			       struct packet_command *);
diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h
index 4ce9056..86caac6 100644
--- a/include/linux/cleancache.h
+++ b/include/linux/cleancache.h
@@ -31,7 +31,7 @@ struct cleancache_ops {
 	void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t);
 	void (*invalidate_inode)(int, struct cleancache_filekey);
 	void (*invalidate_fs)(int);
-};
+} __no_const;
 
 extern struct cleancache_ops *
 	cleancache_register_ops(struct cleancache_ops *ops);
diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index 0c287db..5efa775 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -180,6 +180,7 @@ struct clk_ops {
 	void		(*init)(struct clk_hw *hw);
 	int		(*debug_init)(struct clk_hw *hw, struct dentry *dentry);
 };
+typedef struct clk_ops __no_const clk_ops_no_const;
 
 /**
  * struct clk_init_data - holds init data that's common to all clocks and is
diff --git a/include/linux/compat.h b/include/linux/compat.h
index e649426..a74047b 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -316,7 +316,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
 			   compat_size_t __user *len_ptr);
 
 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
-asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
+asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg) __intentional_overflow(0);
 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
 		compat_ssize_t msgsz, int msgflg);
@@ -436,7 +436,7 @@ extern int compat_ptrace_request(struct task_struct *child,
 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 			       compat_ulong_t addr, compat_ulong_t data);
 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
-				  compat_long_t addr, compat_long_t data);
+				  compat_ulong_t addr, compat_ulong_t data);
 
 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
 /*
diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
index 2507fd2..55203f8 100644
--- a/include/linux/compiler-gcc4.h
+++ b/include/linux/compiler-gcc4.h
@@ -39,9 +39,34 @@
 # define __compiletime_warning(message) __attribute__((warning(message)))
 # define __compiletime_error(message) __attribute__((error(message)))
 #endif /* __CHECKER__ */
+
+#define __alloc_size(...)	__attribute((alloc_size(__VA_ARGS__)))
+#define __bos(ptr, arg)		__builtin_object_size((ptr), (arg))
+#define __bos0(ptr)		__bos((ptr), 0)
+#define __bos1(ptr)		__bos((ptr), 1)
 #endif /* GCC_VERSION >= 40300 */
 
 #if GCC_VERSION >= 40500
+
+#ifdef RANDSTRUCT_PLUGIN
+#define __randomize_layout __attribute__((randomize_layout))
+#define __no_randomize_layout __attribute__((no_randomize_layout))
+#endif
+
+#ifdef CONSTIFY_PLUGIN
+#define __no_const __attribute__((no_const))
+#define __do_const __attribute__((do_const))
+#endif
+
+#ifdef SIZE_OVERFLOW_PLUGIN
+#define __size_overflow(...) __attribute__((size_overflow(__VA_ARGS__)))
+#define __intentional_overflow(...) __attribute__((intentional_overflow(__VA_ARGS__)))
+#endif
+
+#ifdef LATENT_ENTROPY_PLUGIN
+#define __latent_entropy __attribute__((latent_entropy))
+#endif
+
 /*
  * Mark a position in code as unreachable.  This can be used to
  * suppress control flow warnings after asm blocks that transfer
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index d5ad7b1..3b74638 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -5,11 +5,14 @@
 
 #ifdef __CHECKER__
 # define __user		__attribute__((noderef, address_space(1)))
+# define __force_user	__force __user
 # define __kernel	__attribute__((address_space(0)))
+# define __force_kernel	__force __kernel
 # define __safe		__attribute__((safe))
 # define __force	__attribute__((force))
 # define __nocast	__attribute__((nocast))
 # define __iomem	__attribute__((noderef, address_space(2)))
+# define __force_iomem	__force __iomem
 # define __must_hold(x)	__attribute__((context(x,1,1)))
 # define __acquires(x)	__attribute__((context(x,0,1)))
 # define __releases(x)	__attribute__((context(x,1,0)))
@@ -17,20 +20,37 @@
 # define __release(x)	__context__(x,-1)
 # define __cond_lock(x,c)	((c) ? ({ __acquire(x); 1; }) : 0)
 # define __percpu	__attribute__((noderef, address_space(3)))
+# define __force_percpu	__force __percpu
 #ifdef CONFIG_SPARSE_RCU_POINTER
 # define __rcu		__attribute__((noderef, address_space(4)))
+# define __force_rcu	__force __rcu
 #else
 # define __rcu
+# define __force_rcu
 #endif
 extern void __chk_user_ptr(const volatile void __user *);
 extern void __chk_io_ptr(const volatile void __iomem *);
 #else
-# define __user
-# define __kernel
+# ifdef CHECKER_PLUGIN
+//#  define __user
+//#  define __force_user
+//#  define __kernel
+//#  define __force_kernel
+# else
+#  ifdef STRUCTLEAK_PLUGIN
+#   define __user __attribute__((user))
+#  else
+#   define __user
+#  endif
+#  define __force_user
+#  define __kernel
+#  define __force_kernel
+# endif
 # define __safe
 # define __force
 # define __nocast
 # define __iomem
+# define __force_iomem
 # define __chk_user_ptr(x) (void)0
 # define __chk_io_ptr(x) (void)0
 # define __builtin_warning(x, y...) (1)
@@ -41,7 +61,9 @@ extern void __chk_io_ptr(const volatile void __iomem *);
 # define __release(x) (void)0
 # define __cond_lock(x,c) (c)
 # define __percpu
+# define __force_percpu
 # define __rcu
+# define __force_rcu
 #endif
 
 /* Indirect macros required for expanded argument pasting, eg. __LINE__. */
@@ -286,6 +308,34 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 # define __attribute_const__	/* unimplemented */
 #endif
 
+#ifndef __randomize_layout
+# define __randomize_layout
+#endif
+
+#ifndef __no_randomize_layout
+# define __no_randomize_layout
+#endif
+
+#ifndef __no_const
+# define __no_const
+#endif
+
+#ifndef __do_const
+# define __do_const
+#endif
+
+#ifndef __size_overflow
+# define __size_overflow(...)
+#endif
+
+#ifndef __intentional_overflow
+# define __intentional_overflow(...)
+#endif
+
+#ifndef __latent_entropy
+# define __latent_entropy
+#endif
+
 /*
  * Tell gcc if a function is cold. The compiler will assume any path
  * directly leading to the call is unlikely.
@@ -295,6 +345,22 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 #define __cold
 #endif
 
+#ifndef __alloc_size
+#define __alloc_size(...)
+#endif
+
+#ifndef __bos
+#define __bos(ptr, arg)
+#endif
+
+#ifndef __bos0
+#define __bos0(ptr)
+#endif
+
+#ifndef __bos1
+#define __bos1(ptr)
+#endif
+
 /* Simple shorthand for a section definition */
 #ifndef __section
 # define __section(S) __attribute__ ((__section__(#S)))
@@ -378,7 +444,8 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
  * use is to mediate communication between process-level code and irq/NMI
  * handlers, all running on the same CPU.
  */
-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
+#define ACCESS_ONCE(x) (*(volatile const typeof(x) *)&(x))
+#define ACCESS_ONCE_RW(x) (*(volatile typeof(x) *)&(x))
 
 /* Ignore/forbid kprobes attach on very low level functions marked by this attribute: */
 #ifdef CONFIG_KPROBES
diff --git a/include/linux/completion.h b/include/linux/completion.h
index 5d5aaae..0ea9b84 100644
--- a/include/linux/completion.h
+++ b/include/linux/completion.h
@@ -90,16 +90,16 @@ static inline void reinit_completion(struct completion *x)
 
 extern void wait_for_completion(struct completion *);
 extern void wait_for_completion_io(struct completion *);
-extern int wait_for_completion_interruptible(struct completion *x);
-extern int wait_for_completion_killable(struct completion *x);
+extern int wait_for_completion_interruptible(struct completion *x) __intentional_overflow(-1);
+extern int wait_for_completion_killable(struct completion *x) __intentional_overflow(-1);
 extern unsigned long wait_for_completion_timeout(struct completion *x,
-						   unsigned long timeout);
+						   unsigned long timeout) __intentional_overflow(-1);
 extern unsigned long wait_for_completion_io_timeout(struct completion *x,
-						    unsigned long timeout);
+						    unsigned long timeout) __intentional_overflow(-1);
 extern long wait_for_completion_interruptible_timeout(
-	struct completion *x, unsigned long timeout);
+	struct completion *x, unsigned long timeout) __intentional_overflow(-1);
 extern long wait_for_completion_killable_timeout(
-	struct completion *x, unsigned long timeout);
+	struct completion *x, unsigned long timeout) __intentional_overflow(-1);
 extern bool try_wait_for_completion(struct completion *x);
 extern bool completion_done(struct completion *x);
 
diff --git a/include/linux/configfs.h b/include/linux/configfs.h
index 34025df..d94bbbc 100644
--- a/include/linux/configfs.h
+++ b/include/linux/configfs.h
@@ -125,7 +125,7 @@ struct configfs_attribute {
 	const char		*ca_name;
 	struct module 		*ca_owner;
 	umode_t			ca_mode;
-};
+} __do_const;
 
 /*
  * Users often need to create attribute structures for their configurable
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 8f8ae95..b9b0e6d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -202,6 +202,7 @@ struct global_attr {
 	ssize_t (*store)(struct kobject *a, struct attribute *b,
 			 const char *c, size_t count);
 };
+typedef struct global_attr __no_const global_attr_no_const;
 
 #define define_one_global_ro(_name)		\
 static struct global_attr _name =		\
@@ -268,7 +269,7 @@ struct cpufreq_driver {
 	bool                    boost_supported;
 	bool                    boost_enabled;
 	int     (*set_boost)    (int state);
-};
+} __do_const;
 
 /* flags */
 #define CPUFREQ_STICKY		(1 << 0)	/* driver isn't removed even if
diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 25e0df6..952dffd 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -50,7 +50,8 @@ struct cpuidle_state {
 			int index);
 
 	int (*enter_dead) (struct cpuidle_device *dev, int index);
-};
+} __do_const;
+typedef struct cpuidle_state __no_const cpuidle_state_no_const;
 
 /* Idle State Flags */
 #define CPUIDLE_FLAG_TIME_VALID	(0x01) /* is residency time measurable? */
@@ -209,7 +210,7 @@ struct cpuidle_governor {
 	void (*reflect)		(struct cpuidle_device *dev, int index);
 
 	struct module 		*owner;
-};
+} __do_const;
 
 #ifdef CONFIG_CPU_IDLE
 extern int cpuidle_register_governor(struct cpuidle_governor *gov);
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 2997af6..424ddc1 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -118,17 +118,17 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
 }
 
 /* Valid inputs for n are -1 and 0. */
-static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
+static inline unsigned int __intentional_overflow(-1) cpumask_next(int n, const struct cpumask *srcp)
 {
 	return n+1;
 }
 
-static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
+static inline unsigned int __intentional_overflow(-1) cpumask_next_zero(int n, const struct cpumask *srcp)
 {
 	return n+1;
 }
 
-static inline unsigned int cpumask_next_and(int n,
+static inline unsigned int __intentional_overflow(-1) cpumask_next_and(int n,
 					    const struct cpumask *srcp,
 					    const struct cpumask *andp)
 {
@@ -174,7 +174,7 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
  *
  * Returns >= nr_cpu_ids if no further cpus set.
  */
-static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
+static inline unsigned int __intentional_overflow(-1) cpumask_next(int n, const struct cpumask *srcp)
 {
 	/* -1 is a legal arg here. */
 	if (n != -1)
@@ -189,7 +189,7 @@ static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
  *
  * Returns >= nr_cpu_ids if no further cpus unset.
  */
-static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
+static inline unsigned int __intentional_overflow(-1) cpumask_next_zero(int n, const struct cpumask *srcp)
 {
 	/* -1 is a legal arg here. */
 	if (n != -1)
@@ -197,7 +197,7 @@ static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
 	return find_next_zero_bit(cpumask_bits(srcp), nr_cpumask_bits, n+1);
 }
 
-int cpumask_next_and(int n, const struct cpumask *, const struct cpumask *);
+int cpumask_next_and(int n, const struct cpumask *, const struct cpumask *) __intentional_overflow(-1);
 int cpumask_any_but(const struct cpumask *mask, unsigned int cpu);
 int cpumask_set_cpu_local_first(int i, int numa_node, cpumask_t *dstp);
 
diff --git a/include/linux/cred.h b/include/linux/cred.h
index f61d6c8..d372d95 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -35,7 +35,7 @@ struct group_info {
 	int		nblocks;
 	kgid_t		small_block[NGROUPS_SMALL];
 	kgid_t		*blocks[0];
-};
+} __randomize_layout;
 
 /**
  * get_group_info - Get a reference to a group info structure
@@ -136,7 +136,7 @@ struct cred {
 	struct user_namespace *user_ns; /* user_ns the caps and keyrings are relative to. */
 	struct group_info *group_info;	/* supplementary groups for euid/fsgid */
 	struct rcu_head	rcu;		/* RCU deletion hook */
-};
+} __randomize_layout;
 
 extern void __put_cred(struct cred *);
 extern void exit_creds(struct task_struct *);
@@ -194,6 +194,9 @@ static inline void validate_creds_for_do_exit(struct task_struct *tsk)
 static inline void validate_process_creds(void)
 {
 }
+static inline void validate_task_creds(struct task_struct *task)
+{
+}
 #endif
 
 /**
@@ -322,6 +325,7 @@ static inline void put_cred(const struct cred *_cred)
 
 #define task_uid(task)		(task_cred_xxx((task), uid))
 #define task_euid(task)		(task_cred_xxx((task), euid))
+#define task_securebits(task)	(task_cred_xxx((task), securebits))
 
 #define current_cred_xxx(xxx)			\
 ({						\
diff --git a/include/linux/crypto.h b/include/linux/crypto.h
index b92eadf..b4ecdc1 100644
--- a/include/linux/crypto.h
+++ b/include/linux/crypto.h
@@ -373,7 +373,7 @@ struct cipher_tfm {
 	                  const u8 *key, unsigned int keylen);
 	void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 	void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
-};
+} __no_const;
 
 struct hash_tfm {
 	int (*init)(struct hash_desc *desc);
@@ -394,13 +394,13 @@ struct compress_tfm {
 	int (*cot_decompress)(struct crypto_tfm *tfm,
 	                      const u8 *src, unsigned int slen,
 	                      u8 *dst, unsigned int *dlen);
-};
+} __no_const;
 
 struct rng_tfm {
 	int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
 			      unsigned int dlen);
 	int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
-};
+} __no_const;
 
 #define crt_ablkcipher	crt_u.ablkcipher
 #define crt_aead	crt_u.aead
diff --git a/include/linux/ctype.h b/include/linux/ctype.h
index 653589e..4ef254a 100644
--- a/include/linux/ctype.h
+++ b/include/linux/ctype.h
@@ -56,7 +56,7 @@ static inline unsigned char __toupper(unsigned char c)
  * Fast implementation of tolower() for internal usage. Do not use in your
  * code.
  */
-static inline char _tolower(const char c)
+static inline unsigned char _tolower(const unsigned char c)
 {
 	return c | 0x20;
 }
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 3c7ec32..4ca97cc 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -133,7 +133,7 @@ struct dentry {
 	} d_u;
 	struct list_head d_subdirs;	/* our children */
 	struct hlist_node d_alias;	/* inode alias list */
-};
+} __randomize_layout;
 
 /*
  * dentry->d_lock spinlock nesting subclasses:
diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h
index 7925bf0..d5143d2 100644
--- a/include/linux/decompress/mm.h
+++ b/include/linux/decompress/mm.h
@@ -77,7 +77,7 @@ static void free(void *where)
  * warnings when not needed (indeed large_malloc / large_free are not
  * needed by inflate */
 
-#define malloc(a) kmalloc(a, GFP_KERNEL)
+#define malloc(a) kmalloc((a), GFP_KERNEL)
 #define free(a) kfree(a)
 
 #define large_malloc(a) vmalloc(a)
diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
index f1863dc..5c26074 100644
--- a/include/linux/devfreq.h
+++ b/include/linux/devfreq.h
@@ -114,7 +114,7 @@ struct devfreq_governor {
 	int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
 	int (*event_handler)(struct devfreq *devfreq,
 				unsigned int event, void *data);
-};
+} __do_const;
 
 /**
  * struct devfreq - Device devfreq structure
diff --git a/include/linux/device.h b/include/linux/device.h
index af424ac..fd46ddf 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -310,7 +310,7 @@ struct subsys_interface {
 	struct list_head node;
 	int (*add_dev)(struct device *dev, struct subsys_interface *sif);
 	int (*remove_dev)(struct device *dev, struct subsys_interface *sif);
-};
+} __do_const;
 
 int subsys_interface_register(struct subsys_interface *sif);
 void subsys_interface_unregister(struct subsys_interface *sif);
@@ -506,7 +506,7 @@ struct device_type {
 	void (*release)(struct device *dev);
 
 	const struct dev_pm_ops *pm;
-};
+} __do_const;
 
 /* interface for exporting device attributes */
 struct device_attribute {
@@ -516,11 +516,12 @@ struct device_attribute {
 	ssize_t (*store)(struct device *dev, struct device_attribute *attr,
 			 const char *buf, size_t count);
 };
+typedef struct device_attribute __no_const device_attribute_no_const;
 
 struct dev_ext_attribute {
 	struct device_attribute attr;
 	void *var;
-};
+} __do_const;
 
 ssize_t device_show_ulong(struct device *dev, struct device_attribute *attr,
 			  char *buf);
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index 931b709..89b2d89 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -60,7 +60,7 @@ struct dma_map_ops {
 	u64 (*get_required_mask)(struct device *dev);
 #endif
 	int is_phys;
-};
+} __do_const;
 
 #define DMA_BIT_MASK(n)	(((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
 
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index d2c5cc7..d193394 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -1147,9 +1147,9 @@ struct dma_pinned_list {
 struct dma_pinned_list *dma_pin_iovec_pages(struct iovec *iov, size_t len);
 void dma_unpin_iovec_pages(struct dma_pinned_list* pinned_list);
 
-dma_cookie_t dma_memcpy_to_iovec(struct dma_chan *chan, struct iovec *iov,
+dma_cookie_t __intentional_overflow(0) dma_memcpy_to_iovec(struct dma_chan *chan, struct iovec *iov,
 	struct dma_pinned_list *pinned_list, unsigned char *kdata, size_t len);
-dma_cookie_t dma_memcpy_pg_to_iovec(struct dma_chan *chan, struct iovec *iov,
+dma_cookie_t __intentional_overflow(0) dma_memcpy_pg_to_iovec(struct dma_chan *chan, struct iovec *iov,
 	struct dma_pinned_list *pinned_list, struct page *page,
 	unsigned int offset, size_t len);
 
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 41bbf8b..bd3a718 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -1027,6 +1027,7 @@ struct efivar_operations {
 	efi_set_variable_t *set_variable;
 	efi_query_variable_store_t *query_variable_store;
 };
+typedef struct efivar_operations __no_const efivar_operations_no_const;
 
 struct efivars {
 	/*
diff --git a/include/linux/elf.h b/include/linux/elf.h
index 67a5fa7..b817372 100644
--- a/include/linux/elf.h
+++ b/include/linux/elf.h
@@ -24,6 +24,7 @@ extern Elf32_Dyn _DYNAMIC [];
 #define elf_note	elf32_note
 #define elf_addr_t	Elf32_Off
 #define Elf_Half	Elf32_Half
+#define elf_dyn		Elf32_Dyn
 
 #else
 
@@ -34,6 +35,7 @@ extern Elf64_Dyn _DYNAMIC [];
 #define elf_note	elf64_note
 #define elf_addr_t	Elf64_Off
 #define Elf_Half	Elf64_Half
+#define elf_dyn		Elf64_Dyn
 
 #endif
 
diff --git a/include/linux/err.h b/include/linux/err.h
index a729120..6ede2c9 100644
--- a/include/linux/err.h
+++ b/include/linux/err.h
@@ -20,12 +20,12 @@
 
 #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
 
-static inline void * __must_check ERR_PTR(long error)
+static inline void * __must_check __intentional_overflow(-1) ERR_PTR(long error)
 {
 	return (void *) error;
 }
 
-static inline long __must_check PTR_ERR(__force const void *ptr)
+static inline long __must_check __intentional_overflow(-1) PTR_ERR(__force const void *ptr)
 {
 	return (long) ptr;
 }
diff --git a/include/linux/extcon.h b/include/linux/extcon.h
index 36f49c4..a2a1f4c 100644
--- a/include/linux/extcon.h
+++ b/include/linux/extcon.h
@@ -135,7 +135,7 @@ struct extcon_dev {
 	/* /sys/class/extcon/.../mutually_exclusive/... */
 	struct attribute_group attr_g_muex;
 	struct attribute **attrs_muex;
-	struct device_attribute *d_attrs_muex;
+	device_attribute_no_const *d_attrs_muex;
 };
 
 /**
diff --git a/include/linux/fb.h b/include/linux/fb.h
index b6bfda9..1f13487 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -305,7 +305,7 @@ struct fb_ops {
 	/* called at KDB enter and leave time to prepare the console */
 	int (*fb_debug_enter)(struct fb_info *info);
 	int (*fb_debug_leave)(struct fb_info *info);
-};
+} __do_const;
 
 #ifdef CONFIG_FB_TILEBLITTING
 #define FB_TILE_CURSOR_NONE        0
diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
index 230f87b..1fd0485 100644
--- a/include/linux/fdtable.h
+++ b/include/linux/fdtable.h
@@ -100,7 +100,7 @@ struct files_struct *get_files_struct(struct task_struct *);
 void put_files_struct(struct files_struct *fs);
 void reset_files_struct(struct files_struct *);
 int unshare_files(struct files_struct **);
-struct files_struct *dup_fd(struct files_struct *, int *);
+struct files_struct *dup_fd(struct files_struct *, int *) __latent_entropy;
 void do_close_on_exec(struct files_struct *);
 int iterate_fd(struct files_struct *, unsigned,
 		int (*)(const void *, struct file *, unsigned),
diff --git a/include/linux/filter.h b/include/linux/filter.h
index a7e3c48..e568c8e 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -9,330 +9,28 @@
 #include <linux/workqueue.h>
 #include <uapi/linux/filter.h>
 
-/* Internally used and optimized filter representation with extended
- * instruction set based on top of classic BPF.
- */
-
-/* instruction classes */
-#define BPF_ALU64	0x07	/* alu mode in double word width */
-
-/* ld/ldx fields */
-#define BPF_DW		0x18	/* double word */
-#define BPF_XADD	0xc0	/* exclusive add */
-
-/* alu/jmp fields */
-#define BPF_MOV		0xb0	/* mov reg to reg */
-#define BPF_ARSH	0xc0	/* sign extending arithmetic shift right */
-
-/* change endianness of a register */
-#define BPF_END		0xd0	/* flags for endianness conversion: */
-#define BPF_TO_LE	0x00	/* convert to little-endian */
-#define BPF_TO_BE	0x08	/* convert to big-endian */
-#define BPF_FROM_LE	BPF_TO_LE
-#define BPF_FROM_BE	BPF_TO_BE
-
-#define BPF_JNE		0x50	/* jump != */
-#define BPF_JSGT	0x60	/* SGT is signed '>', GT in x86 */
-#define BPF_JSGE	0x70	/* SGE is signed '>=', GE in x86 */
-#define BPF_CALL	0x80	/* function call */
-#define BPF_EXIT	0x90	/* function return */
-
-/* Register numbers */
-enum {
-	BPF_REG_0 = 0,
-	BPF_REG_1,
-	BPF_REG_2,
-	BPF_REG_3,
-	BPF_REG_4,
-	BPF_REG_5,
-	BPF_REG_6,
-	BPF_REG_7,
-	BPF_REG_8,
-	BPF_REG_9,
-	BPF_REG_10,
-	__MAX_BPF_REG,
-};
-
-/* BPF has 10 general purpose 64-bit registers and stack frame. */
-#define MAX_BPF_REG	__MAX_BPF_REG
-
-/* ArgX, context and stack frame pointer register positions. Note,
- * Arg1, Arg2, Arg3, etc are used as argument mappings of function
- * calls in BPF_CALL instruction.
- */
-#define BPF_REG_ARG1	BPF_REG_1
-#define BPF_REG_ARG2	BPF_REG_2
-#define BPF_REG_ARG3	BPF_REG_3
-#define BPF_REG_ARG4	BPF_REG_4
-#define BPF_REG_ARG5	BPF_REG_5
-#define BPF_REG_CTX	BPF_REG_6
-#define BPF_REG_FP	BPF_REG_10
-
-/* Additional register mappings for converted user programs. */
-#define BPF_REG_A	BPF_REG_0
-#define BPF_REG_X	BPF_REG_7
-#define BPF_REG_TMP	BPF_REG_8
-
-/* BPF program can access up to 512 bytes of stack space. */
-#define MAX_BPF_STACK	512
-
-/* Helper macros for filter block array initializers. */
-
-/* ALU ops on registers, bpf_add|sub|...: dst_reg += src_reg */
-
-#define BPF_ALU64_REG(OP, DST, SRC)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU64 | BPF_OP(OP) | BPF_X,	\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = 0 })
-
-#define BPF_ALU32_REG(OP, DST, SRC)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU | BPF_OP(OP) | BPF_X,		\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = 0 })
-
-/* ALU ops on immediates, bpf_add|sub|...: dst_reg += imm32 */
-
-#define BPF_ALU64_IMM(OP, DST, IMM)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU64 | BPF_OP(OP) | BPF_K,	\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-#define BPF_ALU32_IMM(OP, DST, IMM)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU | BPF_OP(OP) | BPF_K,		\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-/* Endianess conversion, cpu_to_{l,b}e(), {l,b}e_to_cpu() */
-
-#define BPF_ENDIAN(TYPE, DST, LEN)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU | BPF_END | BPF_SRC(TYPE),	\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = LEN })
-
-/* Short form of mov, dst_reg = src_reg */
-
-#define BPF_MOV64_REG(DST, SRC)					\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU64 | BPF_MOV | BPF_X,		\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = 0 })
-
-#define BPF_MOV32_REG(DST, SRC)					\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU | BPF_MOV | BPF_X,		\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = 0 })
-
-/* Short form of mov, dst_reg = imm32 */
-
-#define BPF_MOV64_IMM(DST, IMM)					\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU64 | BPF_MOV | BPF_K,		\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-#define BPF_MOV32_IMM(DST, IMM)					\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU | BPF_MOV | BPF_K,		\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-/* Short form of mov based on type, BPF_X: dst_reg = src_reg, BPF_K: dst_reg = imm32 */
-
-#define BPF_MOV64_RAW(TYPE, DST, SRC, IMM)			\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU64 | BPF_MOV | BPF_SRC(TYPE),	\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-#define BPF_MOV32_RAW(TYPE, DST, SRC, IMM)			\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ALU | BPF_MOV | BPF_SRC(TYPE),	\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-/* Direct packet access, R0 = *(uint *) (skb->data + imm32) */
-
-#define BPF_LD_ABS(SIZE, IMM)					\
-	((struct sock_filter_int) {				\
-		.code  = BPF_LD | BPF_SIZE(SIZE) | BPF_ABS,	\
-		.dst_reg = 0,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-/* Indirect packet access, R0 = *(uint *) (skb->data + src_reg + imm32) */
-
-#define BPF_LD_IND(SIZE, SRC, IMM)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_LD | BPF_SIZE(SIZE) | BPF_IND,	\
-		.dst_reg = 0,					\
-		.src_reg = SRC,					\
-		.off   = 0,					\
-		.imm   = IMM })
-
-/* Memory load, dst_reg = *(uint *) (src_reg + off16) */
-
-#define BPF_LDX_MEM(SIZE, DST, SRC, OFF)			\
-	((struct sock_filter_int) {				\
-		.code  = BPF_LDX | BPF_SIZE(SIZE) | BPF_MEM,	\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = OFF,					\
-		.imm   = 0 })
-
-/* Memory store, *(uint *) (dst_reg + off16) = src_reg */
-
-#define BPF_STX_MEM(SIZE, DST, SRC, OFF)			\
-	((struct sock_filter_int) {				\
-		.code  = BPF_STX | BPF_SIZE(SIZE) | BPF_MEM,	\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = OFF,					\
-		.imm   = 0 })
-
-/* Memory store, *(uint *) (dst_reg + off16) = imm32 */
-
-#define BPF_ST_MEM(SIZE, DST, OFF, IMM)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_ST | BPF_SIZE(SIZE) | BPF_MEM,	\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = OFF,					\
-		.imm   = IMM })
-
-/* Conditional jumps against registers, if (dst_reg 'op' src_reg) goto pc + off16 */
-
-#define BPF_JMP_REG(OP, DST, SRC, OFF)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_JMP | BPF_OP(OP) | BPF_X,		\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = OFF,					\
-		.imm   = 0 })
-
-/* Conditional jumps against immediates, if (dst_reg 'op' imm32) goto pc + off16 */
-
-#define BPF_JMP_IMM(OP, DST, IMM, OFF)				\
-	((struct sock_filter_int) {				\
-		.code  = BPF_JMP | BPF_OP(OP) | BPF_K,		\
-		.dst_reg = DST,					\
-		.src_reg = 0,					\
-		.off   = OFF,					\
-		.imm   = IMM })
-
-/* Function call */
-
-#define BPF_EMIT_CALL(FUNC)					\
-	((struct sock_filter_int) {				\
-		.code  = BPF_JMP | BPF_CALL,			\
-		.dst_reg = 0,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = ((FUNC) - __bpf_call_base) })
-
-/* Raw code statement block */
-
-#define BPF_RAW_INSN(CODE, DST, SRC, OFF, IMM)			\
-	((struct sock_filter_int) {				\
-		.code  = CODE,					\
-		.dst_reg = DST,					\
-		.src_reg = SRC,					\
-		.off   = OFF,					\
-		.imm   = IMM })
-
-/* Program exit */
-
-#define BPF_EXIT_INSN()						\
-	((struct sock_filter_int) {				\
-		.code  = BPF_JMP | BPF_EXIT,			\
-		.dst_reg = 0,					\
-		.src_reg = 0,					\
-		.off   = 0,					\
-		.imm   = 0 })
-
-#define bytes_to_bpf_size(bytes)				\
-({								\
-	int bpf_size = -EINVAL;					\
-								\
-	if (bytes == sizeof(u8))				\
-		bpf_size = BPF_B;				\
-	else if (bytes == sizeof(u16))				\
-		bpf_size = BPF_H;				\
-	else if (bytes == sizeof(u32))				\
-		bpf_size = BPF_W;				\
-	else if (bytes == sizeof(u64))				\
-		bpf_size = BPF_DW;				\
-								\
-	bpf_size;						\
-})
-
-/* Macro to invoke filter function. */
-#define SK_RUN_FILTER(filter, ctx)  (*filter->bpf_func)(ctx, filter->insnsi)
-
-struct sock_filter_int {
-	__u8	code;		/* opcode */
-	__u8	dst_reg:4;	/* dest register */
-	__u8	src_reg:4;	/* source register */
-	__s16	off;		/* signed offset */
-	__s32	imm;		/* signed immediate constant */
-};
-
 #ifdef CONFIG_COMPAT
-/* A struct sock_filter is architecture independent. */
+/*
+ * A struct sock_filter is architecture independent.
+ */
 struct compat_sock_fprog {
 	u16		len;
-	compat_uptr_t	filter;	/* struct sock_filter * */
+	compat_uptr_t	filter;		/* struct sock_filter * */
 };
 #endif
 
-struct sock_fprog_kern {
-	u16			len;
-	struct sock_filter	*filter;
-};
-
 struct sk_buff;
 struct sock;
-struct seccomp_data;
 
-struct sk_filter {
+struct sk_filter
+{
 	atomic_t		refcnt;
-	u32			jited:1,	/* Is our filter JIT'ed? */
-				len:31;		/* Number of filter blocks */
-	struct sock_fprog_kern	*orig_prog;	/* Original BPF program */
+	unsigned int         	len;	/* Number of filter blocks */
 	struct rcu_head		rcu;
 	unsigned int		(*bpf_func)(const struct sk_buff *skb,
-					    const struct sock_filter_int *filter);
+					    const struct sock_filter *filter);
 	union {
-		struct sock_filter	insns[0];
-		struct sock_filter_int	insnsi[0];
+		struct sock_filter     	insns[0];
 		struct work_struct	work;
 	};
 };
@@ -343,76 +41,25 @@ static inline unsigned int sk_filter_size(unsigned int proglen)
 		   offsetof(struct sk_filter, insns[proglen]));
 }
 
-#define sk_filter_proglen(fprog)			\
-		(fprog->len * sizeof(fprog->filter[0]))
-
-int sk_filter(struct sock *sk, struct sk_buff *skb);
-
-void sk_filter_select_runtime(struct sk_filter *fp);
-void sk_filter_free(struct sk_filter *fp);
-
-int sk_convert_filter(struct sock_filter *prog, int len,
-		      struct sock_filter_int *new_prog, int *new_len);
-
-int sk_unattached_filter_create(struct sk_filter **pfp,
-				struct sock_fprog_kern *fprog);
-void sk_unattached_filter_destroy(struct sk_filter *fp);
-
-int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);
-int sk_detach_filter(struct sock *sk);
-
-int sk_chk_filter(struct sock_filter *filter, unsigned int flen);
-int sk_get_filter(struct sock *sk, struct sock_filter __user *filter,
-		  unsigned int len);
-
-void sk_filter_charge(struct sock *sk, struct sk_filter *fp);
-void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp);
-
-u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5);
-void bpf_int_jit_compile(struct sk_filter *fp);
-
-#define BPF_ANC		BIT(15)
-
-static inline u16 bpf_anc_helper(const struct sock_filter *ftest)
-{
-	BUG_ON(ftest->code & BPF_ANC);
-
-	switch (ftest->code) {
-	case BPF_LD | BPF_W | BPF_ABS:
-	case BPF_LD | BPF_H | BPF_ABS:
-	case BPF_LD | BPF_B | BPF_ABS:
-#define BPF_ANCILLARY(CODE)	case SKF_AD_OFF + SKF_AD_##CODE:	\
-				return BPF_ANC | SKF_AD_##CODE
-		switch (ftest->k) {
-		BPF_ANCILLARY(PROTOCOL);
-		BPF_ANCILLARY(PKTTYPE);
-		BPF_ANCILLARY(IFINDEX);
-		BPF_ANCILLARY(NLATTR);
-		BPF_ANCILLARY(NLATTR_NEST);
-		BPF_ANCILLARY(MARK);
-		BPF_ANCILLARY(QUEUE);
-		BPF_ANCILLARY(HATYPE);
-		BPF_ANCILLARY(RXHASH);
-		BPF_ANCILLARY(CPU);
-		BPF_ANCILLARY(ALU_XOR_X);
-		BPF_ANCILLARY(VLAN_TAG);
-		BPF_ANCILLARY(VLAN_TAG_PRESENT);
-		BPF_ANCILLARY(PAY_OFFSET);
-		BPF_ANCILLARY(RANDOM);
-		}
-		/* Fallthrough. */
-	default:
-		return ftest->code;
-	}
-}
+extern int sk_filter(struct sock *sk, struct sk_buff *skb);
+extern unsigned int sk_run_filter(const struct sk_buff *skb,
+				  const struct sock_filter *filter);
+extern int sk_unattached_filter_create(struct sk_filter **pfp,
+				       struct sock_fprog *fprog);
+extern void sk_unattached_filter_destroy(struct sk_filter *fp);
+extern int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk);
+extern int sk_detach_filter(struct sock *sk);
+extern int sk_chk_filter(struct sock_filter *filter, unsigned int flen);
+extern int sk_get_filter(struct sock *sk, struct sock_filter __user *filter, unsigned len);
+extern void sk_decode_filter(struct sock_filter *filt, struct sock_filter *to);
 
 #ifdef CONFIG_BPF_JIT
 #include <stdarg.h>
 #include <linux/linkage.h>
 #include <linux/printk.h>
 
-void bpf_jit_compile(struct sk_filter *fp);
-void bpf_jit_free(struct sk_filter *fp);
+extern void bpf_jit_compile(struct sk_filter *fp);
+extern void bpf_jit_free(struct sk_filter *fp);
 
 static inline void bpf_jit_dump(unsigned int flen, unsigned int proglen,
 				u32 pass, void *image)
@@ -423,22 +70,90 @@ static inline void bpf_jit_dump(unsigned int flen, unsigned int proglen,
 		print_hex_dump(KERN_ERR, "JIT code: ", DUMP_PREFIX_OFFSET,
 			       16, 1, image, proglen, false);
 }
+#define SK_RUN_FILTER(FILTER, SKB) (*FILTER->bpf_func)(SKB, FILTER->insns)
 #else
 #include <linux/slab.h>
-
 static inline void bpf_jit_compile(struct sk_filter *fp)
 {
 }
-
 static inline void bpf_jit_free(struct sk_filter *fp)
 {
 	kfree(fp);
 }
-#endif /* CONFIG_BPF_JIT */
+#define SK_RUN_FILTER(FILTER, SKB) sk_run_filter(SKB, FILTER->insns)
+#endif
 
 static inline int bpf_tell_extensions(void)
 {
 	return SKF_AD_MAX;
 }
 
+enum {
+	BPF_S_RET_K = 1,
+	BPF_S_RET_A,
+	BPF_S_ALU_ADD_K,
+	BPF_S_ALU_ADD_X,
+	BPF_S_ALU_SUB_K,
+	BPF_S_ALU_SUB_X,
+	BPF_S_ALU_MUL_K,
+	BPF_S_ALU_MUL_X,
+	BPF_S_ALU_DIV_X,
+	BPF_S_ALU_MOD_K,
+	BPF_S_ALU_MOD_X,
+	BPF_S_ALU_AND_K,
+	BPF_S_ALU_AND_X,
+	BPF_S_ALU_OR_K,
+	BPF_S_ALU_OR_X,
+	BPF_S_ALU_XOR_K,
+	BPF_S_ALU_XOR_X,
+	BPF_S_ALU_LSH_K,
+	BPF_S_ALU_LSH_X,
+	BPF_S_ALU_RSH_K,
+	BPF_S_ALU_RSH_X,
+	BPF_S_ALU_NEG,
+	BPF_S_LD_W_ABS,
+	BPF_S_LD_H_ABS,
+	BPF_S_LD_B_ABS,
+	BPF_S_LD_W_LEN,
+	BPF_S_LD_W_IND,
+	BPF_S_LD_H_IND,
+	BPF_S_LD_B_IND,
+	BPF_S_LD_IMM,
+	BPF_S_LDX_W_LEN,
+	BPF_S_LDX_B_MSH,
+	BPF_S_LDX_IMM,
+	BPF_S_MISC_TAX,
+	BPF_S_MISC_TXA,
+	BPF_S_ALU_DIV_K,
+	BPF_S_LD_MEM,
+	BPF_S_LDX_MEM,
+	BPF_S_ST,
+	BPF_S_STX,
+	BPF_S_JMP_JA,
+	BPF_S_JMP_JEQ_K,
+	BPF_S_JMP_JEQ_X,
+	BPF_S_JMP_JGE_K,
+	BPF_S_JMP_JGE_X,
+	BPF_S_JMP_JGT_K,
+	BPF_S_JMP_JGT_X,
+	BPF_S_JMP_JSET_K,
+	BPF_S_JMP_JSET_X,
+	/* Ancillary data */
+	BPF_S_ANC_PROTOCOL,
+	BPF_S_ANC_PKTTYPE,
+	BPF_S_ANC_IFINDEX,
+	BPF_S_ANC_NLATTR,
+	BPF_S_ANC_NLATTR_NEST,
+	BPF_S_ANC_MARK,
+	BPF_S_ANC_QUEUE,
+	BPF_S_ANC_HATYPE,
+	BPF_S_ANC_RXHASH,
+	BPF_S_ANC_CPU,
+	BPF_S_ANC_ALU_XOR_X,
+	BPF_S_ANC_SECCOMP_LD_W,
+	BPF_S_ANC_VLAN_TAG,
+	BPF_S_ANC_VLAN_TAG_PRESENT,
+	BPF_S_ANC_PAY_OFFSET,
+};
+
 #endif /* __LINUX_FILTER_H__ */
diff --git a/include/linux/frontswap.h b/include/linux/frontswap.h
index 8293262..2b3b8bd 100644
--- a/include/linux/frontswap.h
+++ b/include/linux/frontswap.h
@@ -11,7 +11,7 @@ struct frontswap_ops {
 	int (*load)(unsigned, pgoff_t, struct page *);
 	void (*invalidate_page)(unsigned, pgoff_t);
 	void (*invalidate_area)(unsigned);
-};
+} __no_const;
 
 extern bool frontswap_enabled;
 extern struct frontswap_ops *
diff --git a/include/linux/fs.h b/include/linux/fs.h
index e11d60c..901317a 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -401,7 +401,7 @@ struct address_space {
 	spinlock_t		private_lock;	/* for use by the address_space */
 	struct list_head	private_list;	/* ditto */
 	void			*private_data;	/* ditto */
-} __attribute__((aligned(sizeof(long))));
+} __attribute__((aligned(sizeof(long)))) __randomize_layout;
 	/*
 	 * On most architectures that alignment is already the case; but
 	 * must be enforced here for CRIS, to let the least significant bit
@@ -444,7 +444,7 @@ struct block_device {
 	int			bd_fsfreeze_count;
 	/* Mutex for freeze */
 	struct mutex		bd_fsfreeze_mutex;
-};
+} __randomize_layout;
 
 /*
  * Radix-tree tags, for tagging dirty and writeback pages within the pagecache
@@ -588,7 +588,7 @@ struct inode {
 #endif
 
 	void			*i_private; /* fs or device private pointer */
-};
+} __randomize_layout;
 
 static inline int inode_unhashed(struct inode *inode)
 {
@@ -781,7 +781,7 @@ struct file {
 	struct list_head	f_tfile_llink;
 #endif /* #ifdef CONFIG_EPOLL */
 	struct address_space	*f_mapping;
-} __attribute__((aligned(4)));	/* lest something weird decides that 2 is OK */
+} __attribute__((aligned(4))) __randomize_layout;	/* lest something weird decides that 2 is OK */
 
 struct file_handle {
 	__u32 handle_bytes;
@@ -909,7 +909,7 @@ struct file_lock {
 			int state;		/* state of grant or error if -ve */
 		} afs;
 	} fl_u;
-};
+} __randomize_layout;
 
 /* The following constant reflects the upper bound of the file/locking space */
 #ifndef OFFSET_MAX
@@ -1258,7 +1258,7 @@ struct super_block {
 	struct list_lru		s_dentry_lru ____cacheline_aligned_in_smp;
 	struct list_lru		s_inode_lru ____cacheline_aligned_in_smp;
 	struct rcu_head		rcu;
-};
+} __randomize_layout;
 
 extern struct timespec current_fs_time(struct super_block *sb);
 
@@ -1484,7 +1484,8 @@ struct file_operations {
 	long (*fallocate)(struct file *file, int mode, loff_t offset,
 			  loff_t len);
 	int (*show_fdinfo)(struct seq_file *m, struct file *f);
-};
+} __do_const __randomize_layout;
+typedef struct file_operations __no_const file_operations_no_const;
 
 struct inode_operations {
 	struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
@@ -2769,4 +2770,14 @@ static inline bool dir_relax(struct inode *inode)
 	return !IS_DEADDIR(inode);
 }
 
+static inline bool is_sidechannel_device(const struct inode *inode)
+{
+#ifdef CONFIG_GRKERNSEC_DEVICE_SIDECHANNEL
+	umode_t mode = inode->i_mode;
+	return ((S_ISCHR(mode) || S_ISBLK(mode)) && (mode & (S_IROTH | S_IWOTH)));
+#else
+	return false;
+#endif
+}
+
 #endif /* _LINUX_FS_H */
diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h
index 0efc3e6..fd23610 100644
--- a/include/linux/fs_struct.h
+++ b/include/linux/fs_struct.h
@@ -6,13 +6,13 @@
 #include <linux/seqlock.h>
 
 struct fs_struct {
-	int users;
+	atomic_t users;
 	spinlock_t lock;
 	seqcount_t seq;
 	int umask;
 	int in_exec;
 	struct path root, pwd;
-};
+} __randomize_layout;
 
 extern struct kmem_cache *fs_cachep;
 
diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
index 7714849..a4a5c7a 100644
--- a/include/linux/fscache-cache.h
+++ b/include/linux/fscache-cache.h
@@ -113,7 +113,7 @@ struct fscache_operation {
 	fscache_operation_release_t release;
 };
 
-extern atomic_t fscache_op_debug_id;
+extern atomic_unchecked_t fscache_op_debug_id;
 extern void fscache_op_work_func(struct work_struct *work);
 
 extern void fscache_enqueue_operation(struct fscache_operation *);
@@ -135,7 +135,7 @@ static inline void fscache_operation_init(struct fscache_operation *op,
 	INIT_WORK(&op->work, fscache_op_work_func);
 	atomic_set(&op->usage, 1);
 	op->state = FSCACHE_OP_ST_INITIALISED;
-	op->debug_id = atomic_inc_return(&fscache_op_debug_id);
+	op->debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id);
 	op->processor = processor;
 	op->release = release;
 	INIT_LIST_HEAD(&op->pend_link);
diff --git a/include/linux/fscache.h b/include/linux/fscache.h
index 115bb81..e7b812b 100644
--- a/include/linux/fscache.h
+++ b/include/linux/fscache.h
@@ -152,7 +152,7 @@ struct fscache_cookie_def {
 	 * - this is mandatory for any object that may have data
 	 */
 	void (*now_uncached)(void *cookie_netfs_data);
-};
+} __do_const;
 
 /*
  * fscache cached network filesystem type
diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
index 1c804b0..1432c2b 100644
--- a/include/linux/fsnotify.h
+++ b/include/linux/fsnotify.h
@@ -195,6 +195,9 @@ static inline void fsnotify_access(struct file *file)
 	struct inode *inode = file_inode(file);
 	__u32 mask = FS_ACCESS;
 
+	if (is_sidechannel_device(inode))
+		return;
+
 	if (S_ISDIR(inode->i_mode))
 		mask |= FS_ISDIR;
 
@@ -213,6 +216,9 @@ static inline void fsnotify_modify(struct file *file)
 	struct inode *inode = file_inode(file);
 	__u32 mask = FS_MODIFY;
 
+	if (is_sidechannel_device(inode))
+		return;
+
 	if (S_ISDIR(inode->i_mode))
 		mask |= FS_ISDIR;
 
@@ -315,7 +321,7 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
  */
 static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name)
 {
-	return kstrdup(name, GFP_KERNEL);
+	return (const unsigned char *)kstrdup((const char *)name, GFP_KERNEL);
 }
 
 /*
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index ec274e0..e678159 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -194,7 +194,7 @@ struct gendisk {
 	struct kobject *slave_dir;
 
 	struct timer_rand_state *random;
-	atomic_t sync_io;		/* RAID */
+	atomic_unchecked_t sync_io;	/* RAID */
 	struct disk_events *ev;
 #ifdef  CONFIG_BLK_DEV_INTEGRITY
 	struct blk_integrity *integrity;
@@ -435,7 +435,7 @@ extern void disk_flush_events(struct gendisk *disk, unsigned int mask);
 extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask);
 
 /* drivers/char/random.c */
-extern void add_disk_randomness(struct gendisk *disk);
+extern void add_disk_randomness(struct gendisk *disk) __latent_entropy;
 extern void rand_initialize_disk(struct gendisk *disk);
 
 static inline sector_t get_start_sect(struct block_device *bdev)
diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h
index c0894dd..2fbf10c 100644
--- a/include/linux/genl_magic_func.h
+++ b/include/linux/genl_magic_func.h
@@ -246,7 +246,7 @@ const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
 },
 
 #define ZZZ_genl_ops		CONCAT_(GENL_MAGIC_FAMILY, _genl_ops)
-static struct genl_ops ZZZ_genl_ops[] __read_mostly = {
+static struct genl_ops ZZZ_genl_ops[] = {
 #include GENL_MAGIC_INCLUDE_FILE
 };
 
diff --git a/include/linux/gfp.h b/include/linux/gfp.h
index 6eb1fb3..30fe7e4 100644
--- a/include/linux/gfp.h
+++ b/include/linux/gfp.h
@@ -34,6 +34,13 @@ struct vm_area_struct;
 #define ___GFP_NO_KSWAPD	0x400000u
 #define ___GFP_OTHER_NODE	0x800000u
 #define ___GFP_WRITE		0x1000000u
+
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+#define ___GFP_USERCOPY		0x2000000u
+#else
+#define ___GFP_USERCOPY		0
+#endif
+
 /* If the above are modified, __GFP_BITS_SHIFT may need updating */
 
 /*
@@ -90,6 +97,7 @@ struct vm_area_struct;
 #define __GFP_NO_KSWAPD	((__force gfp_t)___GFP_NO_KSWAPD)
 #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */
 #define __GFP_WRITE	((__force gfp_t)___GFP_WRITE)	/* Allocator intends to dirty page */
+#define __GFP_USERCOPY	((__force gfp_t)___GFP_USERCOPY)/* Allocator intends to copy page to/from userland */
 
 /*
  * This may seem redundant, but it's a way of annotating false positives vs.
@@ -97,7 +105,7 @@ struct vm_area_struct;
  */
 #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK)
 
-#define __GFP_BITS_SHIFT 25	/* Room for N __GFP_FOO bits */
+#define __GFP_BITS_SHIFT 26	/* Room for N __GFP_FOO bits */
 #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
 
 /* This equals 0, but use constants in case they ever change */
@@ -155,6 +163,8 @@ struct vm_area_struct;
 /* 4GB DMA on some platforms */
 #define GFP_DMA32	__GFP_DMA32
 
+#define GFP_USERCOPY	__GFP_USERCOPY
+
 /* Convert GFP flags to their corresponding migrate type */
 static inline int allocflags_to_migratetype(gfp_t gfp_flags)
 {
diff --git a/include/linux/gracl.h b/include/linux/gracl.h
new file mode 100644
index 0000000..edb2cb6
--- /dev/null
+++ b/include/linux/gracl.h
@@ -0,0 +1,340 @@
+#ifndef GR_ACL_H
+#define GR_ACL_H
+
+#include <linux/grdefs.h>
+#include <linux/resource.h>
+#include <linux/capability.h>
+#include <linux/dcache.h>
+#include <asm/resource.h>
+
+/* Major status information */
+
+#define GR_VERSION  "grsecurity 3.0"
+#define GRSECURITY_VERSION 0x3000
+
+enum {
+	GR_SHUTDOWN = 0,
+	GR_ENABLE = 1,
+	GR_SPROLE = 2,
+	GR_OLDRELOAD = 3,
+	GR_SEGVMOD = 4,
+	GR_STATUS = 5,
+	GR_UNSPROLE = 6,
+	GR_PASSSET = 7,
+	GR_SPROLEPAM = 8,
+	GR_RELOAD = 9,
+};
+
+/* Password setup definitions
+ * kernel/grhash.c */
+enum {
+	GR_PW_LEN = 128,
+	GR_SALT_LEN = 16,
+	GR_SHA_LEN = 32,
+};
+
+enum {
+	GR_SPROLE_LEN = 64,
+};
+
+enum {
+	GR_NO_GLOB = 0,
+	GR_REG_GLOB,
+	GR_CREATE_GLOB
+};
+
+#define GR_NLIMITS 32
+
+/* Begin Data Structures */
+
+struct sprole_pw {
+	unsigned char *rolename;
+	unsigned char salt[GR_SALT_LEN];
+	unsigned char sum[GR_SHA_LEN];	/* 256-bit SHA hash of the password */
+};
+
+struct name_entry {
+	__u32 key;
+	ino_t inode;
+	dev_t device;
+	char *name;
+	__u16 len;
+	__u8 deleted;
+	struct name_entry *prev;
+	struct name_entry *next;
+};
+
+struct inodev_entry {
+	struct name_entry *nentry;
+	struct inodev_entry *prev;
+	struct inodev_entry *next;
+};
+
+struct acl_role_db {
+	struct acl_role_label **r_hash;
+	__u32 r_size;
+};
+
+struct inodev_db {
+	struct inodev_entry **i_hash;
+	__u32 i_size;
+};
+
+struct name_db {
+	struct name_entry **n_hash;
+	__u32 n_size;
+};
+
+struct crash_uid {
+	uid_t uid;
+	unsigned long expires;
+};
+
+struct gr_hash_struct {
+	void **table;
+	void **nametable;
+	void *first;
+	__u32 table_size;
+	__u32 used_size;
+	int type;
+};
+
+/* Userspace Grsecurity ACL data structures */
+
+struct acl_subject_label {
+	char *filename;
+	ino_t inode;
+	dev_t device;
+	__u32 mode;
+	kernel_cap_t cap_mask;
+	kernel_cap_t cap_lower;
+	kernel_cap_t cap_invert_audit;
+
+	struct rlimit res[GR_NLIMITS];
+	__u32 resmask;
+
+	__u8 user_trans_type;
+	__u8 group_trans_type;
+	uid_t *user_transitions;
+	gid_t *group_transitions;
+	__u16 user_trans_num;
+	__u16 group_trans_num;
+
+	__u32 sock_families[2];
+	__u32 ip_proto[8];
+	__u32 ip_type;
+	struct acl_ip_label **ips;
+	__u32 ip_num;
+	__u32 inaddr_any_override;
+
+	__u32 crashes;
+	unsigned long expires;
+
+	struct acl_subject_label *parent_subject;
+	struct gr_hash_struct *hash;
+	struct acl_subject_label *prev;
+	struct acl_subject_label *next;
+
+	struct acl_object_label **obj_hash;
+	__u32 obj_hash_size;
+	__u16 pax_flags;
+};
+
+struct role_allowed_ip {
+	__u32 addr;
+	__u32 netmask;
+
+	struct role_allowed_ip *prev;
+	struct role_allowed_ip *next;
+};
+
+struct role_transition {
+	char *rolename;
+
+	struct role_transition *prev;
+	struct role_transition *next;
+};
+
+struct acl_role_label {
+	char *rolename;
+	uid_t uidgid;
+	__u16 roletype;
+
+	__u16 auth_attempts;
+	unsigned long expires;
+
+	struct acl_subject_label *root_label;
+	struct gr_hash_struct *hash;
+
+	struct acl_role_label *prev;
+	struct acl_role_label *next;
+
+	struct role_transition *transitions;
+	struct role_allowed_ip *allowed_ips;
+	uid_t *domain_children;
+	__u16 domain_child_num;
+
+	umode_t umask;
+
+	struct acl_subject_label **subj_hash;
+	__u32 subj_hash_size;
+};
+
+struct user_acl_role_db {
+	struct acl_role_label **r_table;
+	__u32 num_pointers;		/* Number of allocations to track */
+	__u32 num_roles;		/* Number of roles */
+	__u32 num_domain_children;	/* Number of domain children */
+	__u32 num_subjects;		/* Number of subjects */
+	__u32 num_objects;		/* Number of objects */
+};
+
+struct acl_object_label {
+	char *filename;
+	ino_t inode;
+	dev_t device;
+	__u32 mode;
+
+	struct acl_subject_label *nested;
+	struct acl_object_label *globbed;
+
+	/* next two structures not used */
+
+	struct acl_object_label *prev;
+	struct acl_object_label *next;
+};
+
+struct acl_ip_label {
+	char *iface;
+	__u32 addr;
+	__u32 netmask;
+	__u16 low, high;
+	__u8 mode;
+	__u32 type;
+	__u32 proto[8];
+
+	/* next two structures not used */
+
+	struct acl_ip_label *prev;
+	struct acl_ip_label *next;
+};
+
+struct gr_arg {
+	struct user_acl_role_db role_db;
+	unsigned char pw[GR_PW_LEN];
+	unsigned char salt[GR_SALT_LEN];
+	unsigned char sum[GR_SHA_LEN];
+	unsigned char sp_role[GR_SPROLE_LEN];
+	struct sprole_pw *sprole_pws;
+	dev_t segv_device;
+	ino_t segv_inode;
+	uid_t segv_uid;
+	__u16 num_sprole_pws;
+	__u16 mode;
+};
+
+struct gr_arg_wrapper {
+	struct gr_arg *arg;
+	__u32 version;
+	__u32 size;
+};
+
+struct subject_map {
+	struct acl_subject_label *user;
+	struct acl_subject_label *kernel;
+	struct subject_map *prev;
+	struct subject_map *next;
+};
+
+struct acl_subj_map_db {
+	struct subject_map **s_hash;
+	__u32 s_size;
+};
+
+struct gr_policy_state {
+	struct sprole_pw **acl_special_roles;
+	__u16 num_sprole_pws;
+	struct acl_role_label *kernel_role;
+	struct acl_role_label *role_list;
+	struct acl_role_label *default_role;
+	struct acl_role_db acl_role_set;
+	struct acl_subj_map_db subj_map_set;
+	struct name_db name_set;
+	struct inodev_db inodev_set;
+};
+
+struct gr_alloc_state {
+	unsigned long alloc_stack_next;
+	unsigned long alloc_stack_size;
+	void **alloc_stack;
+};
+
+struct gr_reload_state {
+	struct gr_policy_state oldpolicy;
+	struct gr_alloc_state oldalloc;
+	struct gr_policy_state newpolicy;
+	struct gr_alloc_state newalloc;
+	struct gr_policy_state *oldpolicy_ptr;
+	struct gr_alloc_state *oldalloc_ptr;
+	unsigned char oldmode;
+};
+
+/* End Data Structures Section */
+
+/* Hash functions generated by empirical testing by Brad Spengler
+   Makes good use of the low bits of the inode.  Generally 0-1 times
+   in loop for successful match.  0-3 for unsuccessful match.
+   Shift/add algorithm with modulus of table size and an XOR*/
+
+static __inline__ unsigned int
+gr_rhash(const uid_t uid, const __u16 type, const unsigned int sz)
+{
+	return ((((uid + type) << (16 + type)) ^ uid) % sz);
+}
+
+ static __inline__ unsigned int
+gr_shash(const struct acl_subject_label *userp, const unsigned int sz)
+{
+	return ((const unsigned long)userp % sz);
+}
+
+static __inline__ unsigned int
+gr_fhash(const ino_t ino, const dev_t dev, const unsigned int sz)
+{
+	return (((ino + dev) ^ ((ino << 13) + (ino << 23) + (dev << 9))) % sz);
+}
+
+static __inline__ unsigned int
+gr_nhash(const char *name, const __u16 len, const unsigned int sz)
+{
+	return full_name_hash((const unsigned char *)name, len) % sz;
+}
+
+#define FOR_EACH_SUBJECT_START(role,subj,iter) \
+	subj = NULL; \
+	iter = 0; \
+	while (iter < role->subj_hash_size) { \
+		if (subj == NULL) \
+			subj = role->subj_hash[iter]; \
+		if (subj == NULL) { \
+			iter++; \
+			continue; \
+		}
+
+#define FOR_EACH_SUBJECT_END(subj,iter) \
+		subj = subj->next; \
+		if (subj == NULL) \
+			iter++; \
+	}
+
+
+#define FOR_EACH_NESTED_SUBJECT_START(role,subj) \
+	subj = role->hash->first; \
+	while (subj != NULL) {
+
+#define FOR_EACH_NESTED_SUBJECT_END(subj) \
+		subj = subj->next; \
+	}
+
+#endif
+
diff --git a/include/linux/gracl_compat.h b/include/linux/gracl_compat.h
new file mode 100644
index 0000000..33ebd1f
--- /dev/null
+++ b/include/linux/gracl_compat.h
@@ -0,0 +1,156 @@
+#ifndef GR_ACL_COMPAT_H
+#define GR_ACL_COMPAT_H
+
+#include <linux/resource.h>
+#include <asm/resource.h>
+
+struct sprole_pw_compat {
+	compat_uptr_t rolename;
+	unsigned char salt[GR_SALT_LEN];
+	unsigned char sum[GR_SHA_LEN];
+};
+
+struct gr_hash_struct_compat {
+	compat_uptr_t table;
+	compat_uptr_t nametable;
+	compat_uptr_t first;
+	__u32 table_size;
+	__u32 used_size;
+	int type;
+};
+
+struct acl_subject_label_compat {
+	compat_uptr_t filename;
+	compat_ino_t inode;
+	__u32 device;
+	__u32 mode;
+	kernel_cap_t cap_mask;
+	kernel_cap_t cap_lower;
+	kernel_cap_t cap_invert_audit;
+
+	struct compat_rlimit res[GR_NLIMITS];
+	__u32 resmask;
+
+	__u8 user_trans_type;
+	__u8 group_trans_type;
+	compat_uptr_t user_transitions;
+	compat_uptr_t group_transitions;
+	__u16 user_trans_num;
+	__u16 group_trans_num;
+
+	__u32 sock_families[2];
+	__u32 ip_proto[8];
+	__u32 ip_type;
+	compat_uptr_t ips;
+	__u32 ip_num;
+	__u32 inaddr_any_override;
+
+	__u32 crashes;
+	compat_ulong_t expires;
+
+	compat_uptr_t parent_subject;
+	compat_uptr_t hash;
+	compat_uptr_t prev;
+	compat_uptr_t next;
+
+	compat_uptr_t obj_hash;
+	__u32 obj_hash_size;
+	__u16 pax_flags;
+};
+
+struct role_allowed_ip_compat {
+	__u32 addr;
+	__u32 netmask;
+
+	compat_uptr_t prev;
+	compat_uptr_t next;
+};
+
+struct role_transition_compat {
+	compat_uptr_t rolename;
+
+	compat_uptr_t prev;
+	compat_uptr_t next;
+};
+
+struct acl_role_label_compat {
+	compat_uptr_t rolename;
+	uid_t uidgid;
+	__u16 roletype;
+
+	__u16 auth_attempts;
+	compat_ulong_t expires;
+
+	compat_uptr_t root_label;
+	compat_uptr_t hash;
+
+	compat_uptr_t prev;
+	compat_uptr_t next;
+
+	compat_uptr_t transitions;
+	compat_uptr_t allowed_ips;
+	compat_uptr_t domain_children;
+	__u16 domain_child_num;
+
+	umode_t umask;
+
+	compat_uptr_t subj_hash;
+	__u32 subj_hash_size;
+};
+
+struct user_acl_role_db_compat {
+	compat_uptr_t r_table;
+	__u32 num_pointers;
+	__u32 num_roles;
+	__u32 num_domain_children;
+	__u32 num_subjects;
+	__u32 num_objects;
+};
+
+struct acl_object_label_compat {
+	compat_uptr_t filename;
+	compat_ino_t inode;
+	__u32 device;
+	__u32 mode;
+
+	compat_uptr_t nested;
+	compat_uptr_t globbed;
+
+	compat_uptr_t prev;
+	compat_uptr_t next;
+};
+
+struct acl_ip_label_compat {
+	compat_uptr_t iface;
+	__u32 addr;
+	__u32 netmask;
+	__u16 low, high;
+	__u8 mode;
+	__u32 type;
+	__u32 proto[8];
+
+	compat_uptr_t prev;
+	compat_uptr_t next;
+};
+
+struct gr_arg_compat {
+	struct user_acl_role_db_compat role_db;
+	unsigned char pw[GR_PW_LEN];
+	unsigned char salt[GR_SALT_LEN];
+	unsigned char sum[GR_SHA_LEN];
+	unsigned char sp_role[GR_SPROLE_LEN];
+	compat_uptr_t sprole_pws;
+	__u32 segv_device;
+	compat_ino_t segv_inode;
+	uid_t segv_uid;
+	__u16 num_sprole_pws;
+	__u16 mode;
+};
+
+struct gr_arg_wrapper_compat {
+	compat_uptr_t arg;
+	__u32 version;
+	__u32 size;
+};
+
+#endif
diff --git a/include/linux/gralloc.h b/include/linux/gralloc.h
new file mode 100644
index 0000000..323ecf2
--- /dev/null
+++ b/include/linux/gralloc.h
@@ -0,0 +1,9 @@
+#ifndef __GRALLOC_H
+#define __GRALLOC_H
+
+void acl_free_all(void);
+int acl_alloc_stack_init(unsigned long size);
+void *acl_alloc(unsigned long len);
+void *acl_alloc_num(unsigned long num, unsigned long len);
+
+#endif
diff --git a/include/linux/grdefs.h b/include/linux/grdefs.h
new file mode 100644
index 0000000..be66033
--- /dev/null
+++ b/include/linux/grdefs.h
@@ -0,0 +1,140 @@
+#ifndef GRDEFS_H
+#define GRDEFS_H
+
+/* Begin grsecurity status declarations */
+
+enum {
+	GR_READY = 0x01,
+	GR_STATUS_INIT = 0x00	// disabled state
+};
+
+/* Begin  ACL declarations */
+
+/* Role flags */
+
+enum {
+	GR_ROLE_USER = 0x0001,
+	GR_ROLE_GROUP = 0x0002,
+	GR_ROLE_DEFAULT = 0x0004,
+	GR_ROLE_SPECIAL = 0x0008,
+	GR_ROLE_AUTH = 0x0010,
+	GR_ROLE_NOPW = 0x0020,
+	GR_ROLE_GOD = 0x0040,
+	GR_ROLE_LEARN = 0x0080,
+	GR_ROLE_TPE = 0x0100,
+	GR_ROLE_DOMAIN = 0x0200,
+	GR_ROLE_PAM = 0x0400,
+	GR_ROLE_PERSIST = 0x0800
+};
+
+/* ACL Subject and Object mode flags */
+enum {
+	GR_DELETED = 0x80000000
+};
+
+/* ACL Object-only mode flags */
+enum {
+	GR_READ 	= 0x00000001,
+	GR_APPEND 	= 0x00000002,
+	GR_WRITE 	= 0x00000004,
+	GR_EXEC 	= 0x00000008,
+	GR_FIND 	= 0x00000010,
+	GR_INHERIT 	= 0x00000020,
+	GR_SETID 	= 0x00000040,
+	GR_CREATE 	= 0x00000080,
+	GR_DELETE 	= 0x00000100,
+	GR_LINK		= 0x00000200,
+	GR_AUDIT_READ 	= 0x00000400,
+	GR_AUDIT_APPEND = 0x00000800,
+	GR_AUDIT_WRITE 	= 0x00001000,
+	GR_AUDIT_EXEC 	= 0x00002000,
+	GR_AUDIT_FIND 	= 0x00004000,
+	GR_AUDIT_INHERIT= 0x00008000,
+	GR_AUDIT_SETID 	= 0x00010000,
+	GR_AUDIT_CREATE = 0x00020000,
+	GR_AUDIT_DELETE = 0x00040000,
+	GR_AUDIT_LINK	= 0x00080000,
+	GR_PTRACERD 	= 0x00100000,
+	GR_NOPTRACE	= 0x00200000,
+	GR_SUPPRESS 	= 0x00400000,
+	GR_NOLEARN 	= 0x00800000,
+	GR_INIT_TRANSFER= 0x01000000
+};
+
+#define GR_AUDITS (GR_AUDIT_READ | GR_AUDIT_WRITE | GR_AUDIT_APPEND | GR_AUDIT_EXEC | \
+		   GR_AUDIT_FIND | GR_AUDIT_INHERIT | GR_AUDIT_SETID | \
+		   GR_AUDIT_CREATE | GR_AUDIT_DELETE | GR_AUDIT_LINK)
+
+/* ACL subject-only mode flags */
+enum {
+	GR_KILL 	= 0x00000001,
+	GR_VIEW 	= 0x00000002,
+	GR_PROTECTED 	= 0x00000004,
+	GR_LEARN 	= 0x00000008,
+	GR_OVERRIDE 	= 0x00000010,
+	/* just a placeholder, this mode is only used in userspace */
+	GR_DUMMY 	= 0x00000020,
+	GR_PROTSHM	= 0x00000040,
+	GR_KILLPROC	= 0x00000080,
+	GR_KILLIPPROC	= 0x00000100,
+	/* just a placeholder, this mode is only used in userspace */
+	GR_NOTROJAN	= 0x00000200,
+	GR_PROTPROCFD	= 0x00000400,
+	GR_PROCACCT	= 0x00000800,
+	GR_RELAXPTRACE	= 0x00001000,
+	//GR_NESTED	= 0x00002000,
+	GR_INHERITLEARN	= 0x00004000,
+	GR_PROCFIND	= 0x00008000,
+	GR_POVERRIDE	= 0x00010000,
+	GR_KERNELAUTH	= 0x00020000,
+	GR_ATSECURE	= 0x00040000,
+	GR_SHMEXEC	= 0x00080000
+};
+
+enum {
+	GR_PAX_ENABLE_SEGMEXEC	= 0x0001,
+	GR_PAX_ENABLE_PAGEEXEC	= 0x0002,
+	GR_PAX_ENABLE_MPROTECT	= 0x0004,
+	GR_PAX_ENABLE_RANDMMAP	= 0x0008,
+	GR_PAX_ENABLE_EMUTRAMP	= 0x0010,
+	GR_PAX_DISABLE_SEGMEXEC	= 0x0100,
+	GR_PAX_DISABLE_PAGEEXEC	= 0x0200,
+	GR_PAX_DISABLE_MPROTECT	= 0x0400,
+	GR_PAX_DISABLE_RANDMMAP	= 0x0800,
+	GR_PAX_DISABLE_EMUTRAMP	= 0x1000,
+};
+
+enum {
+	GR_ID_USER	= 0x01,
+	GR_ID_GROUP	= 0x02,
+};
+
+enum {
+	GR_ID_ALLOW	= 0x01,
+	GR_ID_DENY	= 0x02,
+};
+
+#define GR_CRASH_RES	31
+#define GR_UIDTABLE_MAX 500
+
+/* begin resource learning section */
+enum {
+	GR_RLIM_CPU_BUMP = 60,
+	GR_RLIM_FSIZE_BUMP = 50000,
+	GR_RLIM_DATA_BUMP = 10000,
+	GR_RLIM_STACK_BUMP = 1000,
+	GR_RLIM_CORE_BUMP = 10000,
+	GR_RLIM_RSS_BUMP = 500000,
+	GR_RLIM_NPROC_BUMP = 1,
+	GR_RLIM_NOFILE_BUMP = 5,
+	GR_RLIM_MEMLOCK_BUMP = 50000,
+	GR_RLIM_AS_BUMP = 500000,
+	GR_RLIM_LOCKS_BUMP = 2,
+	GR_RLIM_SIGPENDING_BUMP = 5,
+	GR_RLIM_MSGQUEUE_BUMP = 10000,
+	GR_RLIM_NICE_BUMP = 1,
+	GR_RLIM_RTPRIO_BUMP = 1,
+	GR_RLIM_RTTIME_BUMP = 1000000
+};
+
+#endif
diff --git a/include/linux/grinternal.h b/include/linux/grinternal.h
new file mode 100644
index 0000000..d25522e
--- /dev/null
+++ b/include/linux/grinternal.h
@@ -0,0 +1,229 @@
+#ifndef __GRINTERNAL_H
+#define __GRINTERNAL_H
+
+#ifdef CONFIG_GRKERNSEC
+
+#include <linux/fs.h>
+#include <linux/mnt_namespace.h>
+#include <linux/nsproxy.h>
+#include <linux/gracl.h>
+#include <linux/grdefs.h>
+#include <linux/grmsg.h>
+
+void gr_add_learn_entry(const char *fmt, ...)
+	__attribute__ ((format (printf, 1, 2)));
+__u32 gr_search_file(const struct dentry *dentry, const __u32 mode,
+			    const struct vfsmount *mnt);
+__u32 gr_check_create(const struct dentry *new_dentry,
+			     const struct dentry *parent,
+			     const struct vfsmount *mnt, const __u32 mode);
+int gr_check_protected_task(const struct task_struct *task);
+__u32 to_gr_audit(const __u32 reqmode);
+int gr_set_acls(const int type);
+int gr_acl_is_enabled(void);
+char gr_roletype_to_char(void);
+
+void gr_handle_alertkill(struct task_struct *task);
+char *gr_to_filename(const struct dentry *dentry,
+			    const struct vfsmount *mnt);
+char *gr_to_filename1(const struct dentry *dentry,
+			    const struct vfsmount *mnt);
+char *gr_to_filename2(const struct dentry *dentry,
+			    const struct vfsmount *mnt);
+char *gr_to_filename3(const struct dentry *dentry,
+			    const struct vfsmount *mnt);
+
+extern int grsec_enable_ptrace_readexec;
+extern int grsec_enable_harden_ptrace;
+extern int grsec_enable_link;
+extern int grsec_enable_fifo;
+extern int grsec_enable_execve;
+extern int grsec_enable_shm;
+extern int grsec_enable_execlog;
+extern int grsec_enable_signal;
+extern int grsec_enable_audit_ptrace;
+extern int grsec_enable_forkfail;
+extern int grsec_enable_time;
+extern int grsec_enable_rofs;
+extern int grsec_deny_new_usb;
+extern int grsec_enable_chroot_shmat;
+extern int grsec_enable_chroot_mount;
+extern int grsec_enable_chroot_double;
+extern int grsec_enable_chroot_pivot;
+extern int grsec_enable_chroot_chdir;
+extern int grsec_enable_chroot_chmod;
+extern int grsec_enable_chroot_mknod;
+extern int grsec_enable_chroot_fchdir;
+extern int grsec_enable_chroot_nice;
+extern int grsec_enable_chroot_execlog;
+extern int grsec_enable_chroot_caps;
+extern int grsec_enable_chroot_sysctl;
+extern int grsec_enable_chroot_unix;
+extern int grsec_enable_symlinkown;
+extern kgid_t grsec_symlinkown_gid;
+extern int grsec_enable_tpe;
+extern kgid_t grsec_tpe_gid;
+extern int grsec_enable_tpe_all;
+extern int grsec_enable_tpe_invert;
+extern int grsec_enable_socket_all;
+extern kgid_t grsec_socket_all_gid;
+extern int grsec_enable_socket_client;
+extern kgid_t grsec_socket_client_gid;
+extern int grsec_enable_socket_server;
+extern kgid_t grsec_socket_server_gid;
+extern kgid_t grsec_audit_gid;
+extern int grsec_enable_group;
+extern int grsec_enable_log_rwxmaps;
+extern int grsec_enable_mount;
+extern int grsec_enable_chdir;
+extern int grsec_resource_logging;
+extern int grsec_enable_blackhole;
+extern int grsec_lastack_retries;
+extern int grsec_enable_brute;
+extern int grsec_enable_harden_ipc;
+extern int grsec_lock;
+
+extern spinlock_t grsec_alert_lock;
+extern unsigned long grsec_alert_wtime;
+extern unsigned long grsec_alert_fyet;
+
+extern spinlock_t grsec_audit_lock;
+
+extern rwlock_t grsec_exec_file_lock;
+
+#define gr_task_fullpath(tsk) ((tsk)->exec_file ? \
+			gr_to_filename2((tsk)->exec_file->f_path.dentry, \
+			(tsk)->exec_file->f_path.mnt) : "/")
+
+#define gr_parent_task_fullpath(tsk) ((tsk)->real_parent->exec_file ? \
+			gr_to_filename3((tsk)->real_parent->exec_file->f_path.dentry, \
+			(tsk)->real_parent->exec_file->f_path.mnt) : "/")
+
+#define gr_task_fullpath0(tsk) ((tsk)->exec_file ? \
+			gr_to_filename((tsk)->exec_file->f_path.dentry, \
+			(tsk)->exec_file->f_path.mnt) : "/")
+
+#define gr_parent_task_fullpath0(tsk) ((tsk)->real_parent->exec_file ? \
+			gr_to_filename1((tsk)->real_parent->exec_file->f_path.dentry, \
+			(tsk)->real_parent->exec_file->f_path.mnt) : "/")
+
+#define proc_is_chrooted(tsk_a)  ((tsk_a)->gr_is_chrooted)
+
+#define have_same_root(tsk_a,tsk_b) ((tsk_a)->gr_chroot_dentry == (tsk_b)->gr_chroot_dentry)
+
+static inline bool gr_is_same_file(const struct file *file1, const struct file *file2)
+{
+	if (file1 && file2) {
+		const struct inode *inode1 = file1->f_path.dentry->d_inode;
+		const struct inode *inode2 = file2->f_path.dentry->d_inode;
+		if (inode1->i_ino == inode2->i_ino && inode1->i_sb->s_dev == inode2->i_sb->s_dev)
+			return true;
+	}
+
+	return false;
+}
+
+#define GR_CHROOT_CAPS {{ \
+	CAP_TO_MASK(CAP_LINUX_IMMUTABLE) | CAP_TO_MASK(CAP_NET_ADMIN) | \
+	CAP_TO_MASK(CAP_SYS_MODULE) | CAP_TO_MASK(CAP_SYS_RAWIO) | \
+	CAP_TO_MASK(CAP_SYS_PACCT) | CAP_TO_MASK(CAP_SYS_ADMIN) | \
+	CAP_TO_MASK(CAP_SYS_BOOT) | CAP_TO_MASK(CAP_SYS_TIME) | \
+	CAP_TO_MASK(CAP_NET_RAW) | CAP_TO_MASK(CAP_SYS_TTY_CONFIG) | \
+	CAP_TO_MASK(CAP_IPC_OWNER) | CAP_TO_MASK(CAP_SETFCAP), \
+	CAP_TO_MASK(CAP_SYSLOG) | CAP_TO_MASK(CAP_MAC_ADMIN) }}
+
+#define security_learn(normal_msg,args...) \
+({ \
+	read_lock(&grsec_exec_file_lock); \
+	gr_add_learn_entry(normal_msg "\n", ## args); \
+	read_unlock(&grsec_exec_file_lock); \
+})
+
+enum {
+	GR_DO_AUDIT,
+	GR_DONT_AUDIT,
+	/* used for non-audit messages that we shouldn't kill the task on */
+	GR_DONT_AUDIT_GOOD
+};
+
+enum {
+	GR_TTYSNIFF,
+	GR_RBAC,
+	GR_RBAC_STR,
+	GR_STR_RBAC,
+	GR_RBAC_MODE2,
+	GR_RBAC_MODE3,
+	GR_FILENAME,
+	GR_SYSCTL_HIDDEN,
+	GR_NOARGS,
+	GR_ONE_INT,
+	GR_ONE_INT_TWO_STR,
+	GR_ONE_STR,
+	GR_STR_INT,
+	GR_TWO_STR_INT,
+	GR_TWO_INT,
+	GR_TWO_U64,
+	GR_THREE_INT,
+	GR_FIVE_INT_TWO_STR,
+	GR_TWO_STR,
+	GR_THREE_STR,
+	GR_FOUR_STR,
+	GR_STR_FILENAME,
+	GR_FILENAME_STR,
+	GR_FILENAME_TWO_INT,
+	GR_FILENAME_TWO_INT_STR,
+	GR_TEXTREL,
+	GR_PTRACE,
+	GR_RESOURCE,
+	GR_CAP,
+	GR_SIG,
+	GR_SIG2,
+	GR_CRASH1,
+	GR_CRASH2,
+	GR_PSACCT,
+	GR_RWXMAP,
+	GR_RWXMAPVMA
+};
+
+#define gr_log_hidden_sysctl(audit, msg, str) gr_log_varargs(audit, msg, GR_SYSCTL_HIDDEN, str)
+#define gr_log_ttysniff(audit, msg, task) gr_log_varargs(audit, msg, GR_TTYSNIFF, task)
+#define gr_log_fs_rbac_generic(audit, msg, dentry, mnt) gr_log_varargs(audit, msg, GR_RBAC, dentry, mnt)
+#define gr_log_fs_rbac_str(audit, msg, dentry, mnt, str) gr_log_varargs(audit, msg, GR_RBAC_STR, dentry, mnt, str)
+#define gr_log_fs_str_rbac(audit, msg, str, dentry, mnt) gr_log_varargs(audit, msg, GR_STR_RBAC, str, dentry, mnt)
+#define gr_log_fs_rbac_mode2(audit, msg, dentry, mnt, str1, str2) gr_log_varargs(audit, msg, GR_RBAC_MODE2, dentry, mnt, str1, str2)
+#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)
+#define gr_log_fs_generic(audit, msg, dentry, mnt) gr_log_varargs(audit, msg, GR_FILENAME, dentry, mnt)
+#define gr_log_noargs(audit, msg) gr_log_varargs(audit, msg, GR_NOARGS)
+#define gr_log_int(audit, msg, num) gr_log_varargs(audit, msg, GR_ONE_INT, num)
+#define gr_log_int_str2(audit, msg, num, str1, str2) gr_log_varargs(audit, msg, GR_ONE_INT_TWO_STR, num, str1, str2)
+#define gr_log_str(audit, msg, str) gr_log_varargs(audit, msg, GR_ONE_STR, str)
+#define gr_log_str_int(audit, msg, str, num) gr_log_varargs(audit, msg, GR_STR_INT, str, num)
+#define gr_log_int_int(audit, msg, num1, num2) gr_log_varargs(audit, msg, GR_TWO_INT, num1, num2)
+#define gr_log_two_u64(audit, msg, num1, num2) gr_log_varargs(audit, msg, GR_TWO_U64, num1, num2)
+#define gr_log_int3(audit, msg, num1, num2, num3) gr_log_varargs(audit, msg, GR_THREE_INT, num1, num2, num3)
+#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)
+#define gr_log_str_str(audit, msg, str1, str2) gr_log_varargs(audit, msg, GR_TWO_STR, str1, str2)
+#define gr_log_str2_int(audit, msg, str1, str2, num) gr_log_varargs(audit, msg, GR_TWO_STR_INT, str1, str2, num)
+#define gr_log_str3(audit, msg, str1, str2, str3) gr_log_varargs(audit, msg, GR_THREE_STR, str1, str2, str3)
+#define gr_log_str4(audit, msg, str1, str2, str3, str4) gr_log_varargs(audit, msg, GR_FOUR_STR, str1, str2, str3, str4)
+#define gr_log_str_fs(audit, msg, str, dentry, mnt) gr_log_varargs(audit, msg, GR_STR_FILENAME, str, dentry, mnt)
+#define gr_log_fs_str(audit, msg, dentry, mnt, str) gr_log_varargs(audit, msg, GR_FILENAME_STR, dentry, mnt, str)
+#define gr_log_fs_int2(audit, msg, dentry, mnt, num1, num2) gr_log_varargs(audit, msg, GR_FILENAME_TWO_INT, dentry, mnt, num1, num2)
+#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)
+#define gr_log_textrel_ulong_ulong(audit, msg, file, ulong1, ulong2) gr_log_varargs(audit, msg, GR_TEXTREL, file, ulong1, ulong2)
+#define gr_log_ptrace(audit, msg, task) gr_log_varargs(audit, msg, GR_PTRACE, task)
+#define gr_log_res_ulong2_str(audit, msg, task, ulong1, str, ulong2) gr_log_varargs(audit, msg, GR_RESOURCE, task, ulong1, str, ulong2)
+#define gr_log_cap(audit, msg, task, str) gr_log_varargs(audit, msg, GR_CAP, task, str)
+#define gr_log_sig_addr(audit, msg, str, addr) gr_log_varargs(audit, msg, GR_SIG, str, addr)
+#define gr_log_sig_task(audit, msg, task, num) gr_log_varargs(audit, msg, GR_SIG2, task, num)
+#define gr_log_crash1(audit, msg, task, ulong) gr_log_varargs(audit, msg, GR_CRASH1, task, ulong)
+#define gr_log_crash2(audit, msg, task, ulong1) gr_log_varargs(audit, msg, GR_CRASH2, task, ulong1)
+#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)
+#define gr_log_rwxmap(audit, msg, str) gr_log_varargs(audit, msg, GR_RWXMAP, str)
+#define gr_log_rwxmap_vma(audit, msg, str) gr_log_varargs(audit, msg, GR_RWXMAPVMA, str)
+
+void gr_log_varargs(int audit, const char *msg, int argtypes, ...);
+
+#endif
+
+#endif
diff --git a/include/linux/grmsg.h b/include/linux/grmsg.h
new file mode 100644
index 0000000..b02ba9d
--- /dev/null
+++ b/include/linux/grmsg.h
@@ -0,0 +1,117 @@
+#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"
+#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"
+#define GR_PTRACE_ACL_MSG "denied ptrace of %.950s(%.16s:%d) by "
+#define GR_STOPMOD_MSG "denied modification of module state by "
+#define GR_ROFS_BLOCKWRITE_MSG "denied write to block device %.950s by "
+#define GR_ROFS_MOUNT_MSG "denied writable mount of %.950s by "
+#define GR_IOPERM_MSG "denied use of ioperm() by "
+#define GR_IOPL_MSG "denied use of iopl() by "
+#define GR_SHMAT_ACL_MSG "denied attach of shared memory of UID %u, PID %d, ID %u by "
+#define GR_UNIX_CHROOT_MSG "denied connect() to abstract AF_UNIX socket outside of chroot by "
+#define GR_SHMAT_CHROOT_MSG "denied attach of shared memory outside of chroot by "
+#define GR_MEM_READWRITE_MSG "denied access of range %Lx -> %Lx in /dev/mem by "
+#define GR_SYMLINK_MSG "not following symlink %.950s owned by %d.%d by "
+#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"
+#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"
+#define GR_HIDDEN_ACL_MSG "%s access to hidden file %.950s by "
+#define GR_OPEN_ACL_MSG "%s open of %.950s for%s%s by "
+#define GR_CREATE_ACL_MSG "%s create of %.950s for%s%s by "
+#define GR_FIFO_MSG "denied writing FIFO %.950s of %d.%d by "
+#define GR_MKNOD_CHROOT_MSG "denied mknod of %.950s from chroot by "
+#define GR_MKNOD_ACL_MSG "%s mknod of %.950s by "
+#define GR_UNIXCONNECT_ACL_MSG "%s connect() to the unix domain socket %.950s by "
+#define GR_TTYSNIFF_ACL_MSG "terminal being sniffed by IP:%pI4 %.480s[%.16s:%d], parent %.480s[%.16s:%d] against "
+#define GR_MKDIR_ACL_MSG "%s mkdir of %.950s by "
+#define GR_RMDIR_ACL_MSG "%s rmdir of %.950s by "
+#define GR_UNLINK_ACL_MSG "%s unlink of %.950s by "
+#define GR_SYMLINK_ACL_MSG "%s symlink from %.480s to %.480s by "
+#define GR_HARDLINK_MSG "denied hardlink of %.930s (owned by %d.%d) to %.30s for "
+#define GR_LINK_ACL_MSG "%s link of %.480s to %.480s by "
+#define GR_INHERIT_ACL_MSG "successful inherit of %.480s's ACL for %.480s by "
+#define GR_RENAME_ACL_MSG "%s rename of %.480s to %.480s by "
+#define GR_UNSAFESHARE_EXEC_ACL_MSG "denied exec with cloned fs of %.950s by "
+#define GR_PTRACE_EXEC_ACL_MSG "denied ptrace of %.950s by "
+#define GR_EXEC_ACL_MSG "%s execution of %.950s by "
+#define GR_EXEC_TPE_MSG "denied untrusted exec (due to %.70s) of %.950s by "
+#define GR_SEGVSTART_ACL_MSG "possible exploit bruteforcing on " DEFAULTSECMSG " banning uid %u from login for %lu seconds"
+#define GR_SEGVNOSUID_ACL_MSG "possible exploit bruteforcing on " DEFAULTSECMSG " banning execution for %lu seconds"
+#define GR_MOUNT_CHROOT_MSG "denied mount of %.256s as %.930s from chroot by "
+#define GR_PIVOT_CHROOT_MSG "denied pivot_root from chroot by "
+#define GR_TRUNCATE_ACL_MSG "%s truncate of %.950s by "
+#define GR_ATIME_ACL_MSG "%s access time change of %.950s by "
+#define GR_ACCESS_ACL_MSG "%s access of %.950s for%s%s%s by "
+#define GR_CHROOT_CHROOT_MSG "denied double chroot to %.950s by "
+#define GR_CHMOD_CHROOT_MSG "denied chmod +s of %.950s by "
+#define GR_CHMOD_ACL_MSG "%s chmod of %.950s by "
+#define GR_CHROOT_FCHDIR_MSG "denied fchdir outside of chroot to %.950s by "
+#define GR_CHROOT_FHANDLE_MSG "denied use of file handles inside chroot by "
+#define GR_CHOWN_ACL_MSG "%s chown of %.950s by "
+#define GR_SETXATTR_ACL_MSG "%s setting extended attribute of %.950s by "
+#define GR_REMOVEXATTR_ACL_MSG "%s removing extended attribute of %.950s by "
+#define GR_WRITLIB_ACL_MSG "denied load of writable library %.950s by "
+#define GR_INITF_ACL_MSG "init_variables() failed %s by "
+#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"
+#define GR_DEV_ACL_MSG "/dev/grsec: %d bytes sent %d required, being fed garbage by "
+#define GR_SHUTS_ACL_MSG "shutdown auth success for "
+#define GR_SHUTF_ACL_MSG "shutdown auth failure for "
+#define GR_SHUTI_ACL_MSG "ignoring shutdown for disabled RBAC system for "
+#define GR_SEGVMODS_ACL_MSG "segvmod auth success for "
+#define GR_SEGVMODF_ACL_MSG "segvmod auth failure for "
+#define GR_SEGVMODI_ACL_MSG "ignoring segvmod for disabled RBAC system for "
+#define GR_ENABLE_ACL_MSG "%s RBAC system loaded by "
+#define GR_ENABLEF_ACL_MSG "unable to load %s for "
+#define GR_RELOADI_ACL_MSG "ignoring reload request for disabled RBAC system"
+#define GR_RELOAD_ACL_MSG "%s RBAC system reloaded by "
+#define GR_RELOADF_ACL_MSG "failed reload of %s for "
+#define GR_SPROLEI_ACL_MSG "ignoring change to special role for disabled RBAC system for "
+#define GR_SPROLES_ACL_MSG "successful change to special role %s (id %d) by "
+#define GR_SPROLEL_ACL_MSG "special role %s (id %d) exited by "
+#define GR_SPROLEF_ACL_MSG "special role %s failure for "
+#define GR_UNSPROLEI_ACL_MSG "ignoring unauth of special role for disabled RBAC system for "
+#define GR_UNSPROLES_ACL_MSG "successful unauth of special role %s (id %d) by "
+#define GR_INVMODE_ACL_MSG "invalid mode %d by "
+#define GR_PRIORITY_CHROOT_MSG "denied priority change of process (%.16s:%d) by "
+#define GR_FAILFORK_MSG "failed fork with errno %s by "
+#define GR_NICE_CHROOT_MSG "denied priority change by "
+#define GR_UNISIGLOG_MSG "%.32s occurred at %p in "
+#define GR_DUALSIGLOG_MSG "signal %d sent to " DEFAULTSECMSG " by "
+#define GR_SIG_ACL_MSG "denied send of signal %d to protected task " DEFAULTSECMSG " by "
+#define GR_SYSCTL_MSG "denied modification of grsecurity sysctl value : %.32s by "
+#define GR_SYSCTL_ACL_MSG "%s sysctl of %.950s for%s%s by "
+#define GR_TIME_MSG "time set by "
+#define GR_DEFACL_MSG "fatal: unable to find subject for (%.16s:%d), loaded by "
+#define GR_MMAP_ACL_MSG "%s executable mmap of %.950s by "
+#define GR_MPROTECT_ACL_MSG "%s executable mprotect of %.950s by "
+#define GR_SOCK_MSG "denied socket(%.16s,%.16s,%.16s) by "
+#define GR_SOCK_NOINET_MSG "denied socket(%.16s,%.16s,%d) by "
+#define GR_BIND_MSG "denied bind() by "
+#define GR_CONNECT_MSG "denied connect() by "
+#define GR_BIND_ACL_MSG "denied bind() to %pI4 port %u sock type %.16s protocol %.16s by "
+#define GR_CONNECT_ACL_MSG "denied connect() to %pI4 port %u sock type %.16s protocol %.16s by "
+#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"
+#define GR_EXEC_CHROOT_MSG "exec of %.980s within chroot by process "
+#define GR_CAP_ACL_MSG "use of %s denied for "
+#define GR_CAP_CHROOT_MSG "use of %s in chroot denied for "
+#define GR_CAP_ACL_MSG2 "use of %s permitted for "
+#define GR_USRCHANGE_ACL_MSG "change to uid %u denied for "
+#define GR_GRPCHANGE_ACL_MSG "change to gid %u denied for "
+#define GR_REMOUNT_AUDIT_MSG "remount of %.256s by "
+#define GR_UNMOUNT_AUDIT_MSG "unmount of %.256s by "
+#define GR_MOUNT_AUDIT_MSG "mount of %.256s to %.256s by "
+#define GR_CHDIR_AUDIT_MSG "chdir to %.980s by "
+#define GR_EXEC_AUDIT_MSG "exec of %.930s (%.128s) by "
+#define GR_RESOURCE_MSG "denied resource overstep by requesting %lu for %.16s against limit %lu for "
+#define GR_RWXMMAP_MSG "denied RWX mmap of %.950s by "
+#define GR_RWXMPROTECT_MSG "denied RWX mprotect of %.950s by "
+#define GR_TEXTREL_AUDIT_MSG "denied text relocation in %.950s, VMA:0x%08lx 0x%08lx by "
+#define GR_PTGNUSTACK_MSG "denied marking stack executable as requested by PT_GNU_STACK marking in %.950s by "
+#define GR_VM86_MSG "denied use of vm86 by "
+#define GR_PTRACE_AUDIT_MSG "process %.950s(%.16s:%d) attached to via ptrace by "
+#define GR_PTRACE_READEXEC_MSG "denied ptrace of unreadable binary %.950s by "
+#define GR_INIT_TRANSFER_MSG "persistent special role transferred privilege to init by "
+#define GR_BADPROCPID_MSG "denied read of sensitive /proc/pid/%s entry via fd passed across exec by "
+#define GR_SYMLINKOWNER_MSG "denied following symlink %.950s since symlink owner %u does not match target owner %u, by "
+#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 "
+#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 "
+#define GR_IPC_DENIED_MSG "denied %s of overly-permissive IPC object with creator uid %u by "
+#define GR_MSRWRITE_MSG "denied write to CPU MSR by "
diff --git a/include/linux/grsecurity.h b/include/linux/grsecurity.h
new file mode 100644
index 0000000..10b9635
--- /dev/null
+++ b/include/linux/grsecurity.h
@@ -0,0 +1,254 @@
+#ifndef GR_SECURITY_H
+#define GR_SECURITY_H
+#include <linux/fs.h>
+#include <linux/fs_struct.h>
+#include <linux/binfmts.h>
+#include <linux/gracl.h>
+
+/* notify of brain-dead configs */
+#if defined(CONFIG_GRKERNSEC_PROC_USER) && defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+#error "CONFIG_GRKERNSEC_PROC_USER and CONFIG_GRKERNSEC_PROC_USERGROUP cannot both be enabled."
+#endif
+#if defined(CONFIG_GRKERNSEC_PROC) && !defined(CONFIG_GRKERNSEC_PROC_USER) && !defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+#error "CONFIG_GRKERNSEC_PROC enabled, but neither CONFIG_GRKERNSEC_PROC_USER nor CONFIG_GRKERNSEC_PROC_USERGROUP enabled"
+#endif
+#if defined(CONFIG_PAX_NOEXEC) && !defined(CONFIG_PAX_PAGEEXEC) && !defined(CONFIG_PAX_SEGMEXEC) && !defined(CONFIG_PAX_KERNEXEC)
+#error "CONFIG_PAX_NOEXEC enabled, but PAGEEXEC, SEGMEXEC, and KERNEXEC are disabled."
+#endif
+#if defined(CONFIG_PAX_ASLR) && !defined(CONFIG_PAX_RANDKSTACK) && !defined(CONFIG_PAX_RANDUSTACK) && !defined(CONFIG_PAX_RANDMMAP)
+#error "CONFIG_PAX_ASLR enabled, but RANDKSTACK, RANDUSTACK, and RANDMMAP are disabled."
+#endif
+#if defined(CONFIG_PAX) && !defined(CONFIG_PAX_NOEXEC) && !defined(CONFIG_PAX_ASLR)
+#error "CONFIG_PAX enabled, but no PaX options are enabled."
+#endif
+
+int gr_handle_new_usb(void);
+
+void gr_handle_brute_attach(int dumpable);
+void gr_handle_brute_check(void);
+void gr_handle_kernel_exploit(void);
+
+char gr_roletype_to_char(void);
+
+int gr_proc_is_restricted(void);
+
+int gr_acl_enable_at_secure(void);
+
+int gr_check_user_change(kuid_t real, kuid_t effective, kuid_t fs);
+int gr_check_group_change(kgid_t real, kgid_t effective, kgid_t fs);
+
+int gr_learn_cap(const struct task_struct *task, const struct cred *cred, const int cap);
+
+void gr_del_task_from_ip_table(struct task_struct *p);
+
+int gr_pid_is_chrooted(struct task_struct *p);
+int gr_handle_chroot_fowner(struct pid *pid, enum pid_type type);
+int gr_handle_chroot_nice(void);
+int gr_handle_chroot_sysctl(const int op);
+int gr_handle_chroot_setpriority(struct task_struct *p,
+					const int niceval);
+int gr_chroot_fchdir(struct dentry *u_dentry, struct vfsmount *u_mnt);
+int gr_chroot_fhandle(void);
+int gr_handle_chroot_chroot(const struct dentry *dentry,
+				   const struct vfsmount *mnt);
+void gr_handle_chroot_chdir(const struct path *path);
+int gr_handle_chroot_chmod(const struct dentry *dentry,
+				  const struct vfsmount *mnt, const int mode);
+int gr_handle_chroot_mknod(const struct dentry *dentry,
+				  const struct vfsmount *mnt, const int mode);
+int gr_handle_chroot_mount(const struct dentry *dentry,
+				  const struct vfsmount *mnt,
+				  const char *dev_name);
+int gr_handle_chroot_pivot(void);
+int gr_handle_chroot_unix(const pid_t pid);
+
+int gr_handle_rawio(const struct inode *inode);
+
+void gr_handle_ioperm(void);
+void gr_handle_iopl(void);
+void gr_handle_msr_write(void);
+
+umode_t gr_acl_umask(void);
+
+int gr_tpe_allow(const struct file *file);
+
+void gr_set_chroot_entries(struct task_struct *task, const struct path *path);
+void gr_clear_chroot_entries(struct task_struct *task);
+
+void gr_log_forkfail(const int retval);
+void gr_log_timechange(void);
+void gr_log_signal(const int sig, const void *addr, const struct task_struct *t);
+void gr_log_chdir(const struct dentry *dentry,
+			 const struct vfsmount *mnt);
+void gr_log_chroot_exec(const struct dentry *dentry,
+			       const struct vfsmount *mnt);
+void gr_log_remount(const char *devname, const int retval);
+void gr_log_unmount(const char *devname, const int retval);
+void gr_log_mount(const char *from, const char *to, const int retval);
+void gr_log_textrel(struct vm_area_struct *vma);
+void gr_log_ptgnustack(struct file *file);
+void gr_log_rwxmmap(struct file *file);
+void gr_log_rwxmprotect(struct vm_area_struct *vma);
+
+int gr_handle_follow_link(const struct inode *parent,
+				 const struct inode *inode,
+				 const struct dentry *dentry,
+				 const struct vfsmount *mnt);
+int gr_handle_fifo(const struct dentry *dentry,
+			  const struct vfsmount *mnt,
+			  const struct dentry *dir, const int flag,
+			  const int acc_mode);
+int gr_handle_hardlink(const struct dentry *dentry,
+			      const struct vfsmount *mnt,
+			      struct inode *inode,
+			      const int mode, const struct filename *to);
+
+int gr_is_capable(const int cap);
+int gr_is_capable_nolog(const int cap);
+int gr_task_is_capable(const struct task_struct *task, const struct cred *cred, const int cap);
+int gr_task_is_capable_nolog(const struct task_struct *task, const int cap);
+
+void gr_copy_label(struct task_struct *tsk);
+void gr_handle_crash(struct task_struct *task, const int sig);
+int gr_handle_signal(const struct task_struct *p, const int sig);
+int gr_check_crash_uid(const kuid_t uid);
+int gr_check_protected_task(const struct task_struct *task);
+int gr_check_protected_task_fowner(struct pid *pid, enum pid_type type);
+int gr_acl_handle_mmap(const struct file *file,
+			      const unsigned long prot);
+int gr_acl_handle_mprotect(const struct file *file,
+				  const unsigned long prot);
+int gr_check_hidden_task(const struct task_struct *tsk);
+__u32 gr_acl_handle_truncate(const struct dentry *dentry,
+				    const struct vfsmount *mnt);
+__u32 gr_acl_handle_utime(const struct dentry *dentry,
+				 const struct vfsmount *mnt);
+__u32 gr_acl_handle_access(const struct dentry *dentry,
+				  const struct vfsmount *mnt, const int fmode);
+__u32 gr_acl_handle_chmod(const struct dentry *dentry,
+				 const struct vfsmount *mnt, umode_t *mode);
+__u32 gr_acl_handle_chown(const struct dentry *dentry,
+				 const struct vfsmount *mnt);
+__u32 gr_acl_handle_setxattr(const struct dentry *dentry,
+				 const struct vfsmount *mnt);
+__u32 gr_acl_handle_removexattr(const struct dentry *dentry,
+				 const struct vfsmount *mnt);
+int gr_handle_ptrace(struct task_struct *task, const long request);
+int gr_handle_proc_ptrace(struct task_struct *task);
+__u32 gr_acl_handle_execve(const struct dentry *dentry,
+				  const struct vfsmount *mnt);
+int gr_check_crash_exec(const struct file *filp);
+int gr_acl_is_enabled(void);
+void gr_set_role_label(struct task_struct *task, const kuid_t uid,
+			      const kgid_t gid);
+int gr_set_proc_label(const struct dentry *dentry,
+			const struct vfsmount *mnt,
+			const int unsafe_flags);
+__u32 gr_acl_handle_hidden_file(const struct dentry *dentry,
+				const struct vfsmount *mnt);
+__u32 gr_acl_handle_open(const struct dentry *dentry,
+				const struct vfsmount *mnt, int acc_mode);
+__u32 gr_acl_handle_creat(const struct dentry *dentry,
+				 const struct dentry *p_dentry,
+				 const struct vfsmount *p_mnt,
+				 int open_flags, int acc_mode, const int imode);
+void gr_handle_create(const struct dentry *dentry,
+			     const struct vfsmount *mnt);
+void gr_handle_proc_create(const struct dentry *dentry,
+			   const struct inode *inode);
+__u32 gr_acl_handle_mknod(const struct dentry *new_dentry,
+				 const struct dentry *parent_dentry,
+				 const struct vfsmount *parent_mnt,
+				 const int mode);
+__u32 gr_acl_handle_mkdir(const struct dentry *new_dentry,
+				 const struct dentry *parent_dentry,
+				 const struct vfsmount *parent_mnt);
+__u32 gr_acl_handle_rmdir(const struct dentry *dentry,
+				 const struct vfsmount *mnt);
+void gr_handle_delete(const ino_t ino, const dev_t dev);
+__u32 gr_acl_handle_unlink(const struct dentry *dentry,
+				  const struct vfsmount *mnt);
+__u32 gr_acl_handle_symlink(const struct dentry *new_dentry,
+				   const struct dentry *parent_dentry,
+				   const struct vfsmount *parent_mnt,
+				   const struct filename *from);
+__u32 gr_acl_handle_link(const struct dentry *new_dentry,
+				const struct dentry *parent_dentry,
+				const struct vfsmount *parent_mnt,
+				const struct dentry *old_dentry,
+				const struct vfsmount *old_mnt, const struct filename *to);
+int gr_handle_symlink_owner(const struct path *link, const struct inode *target);
+int gr_acl_handle_rename(struct dentry *new_dentry,
+				struct dentry *parent_dentry,
+				const struct vfsmount *parent_mnt,
+				struct dentry *old_dentry,
+				struct inode *old_parent_inode,
+				struct vfsmount *old_mnt, const struct filename *newname, unsigned int flags);
+void gr_handle_rename(struct inode *old_dir, struct inode *new_dir,
+				struct dentry *old_dentry,
+				struct dentry *new_dentry,
+				struct vfsmount *mnt, const __u8 replace, unsigned int flags);
+__u32 gr_check_link(const struct dentry *new_dentry,
+			   const struct dentry *parent_dentry,
+			   const struct vfsmount *parent_mnt,
+			   const struct dentry *old_dentry,
+			   const struct vfsmount *old_mnt);
+int gr_acl_handle_filldir(const struct file *file, const char *name,
+				 const unsigned int namelen, const ino_t ino);
+
+__u32 gr_acl_handle_unix(const struct dentry *dentry,
+				const struct vfsmount *mnt);
+void gr_acl_handle_exit(void);
+void gr_acl_handle_psacct(struct task_struct *task, const long code);
+int gr_acl_handle_procpidmem(const struct task_struct *task);
+int gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags);
+int gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode);
+void gr_audit_ptrace(struct task_struct *task);
+dev_t gr_get_dev_from_dentry(struct dentry *dentry);
+void gr_put_exec_file(struct task_struct *task);
+
+int gr_ptrace_readexec(struct file *file, int unsafe_flags);
+
+#if defined(CONFIG_GRKERNSEC) && (defined(CONFIG_GRKERNSEC_RESLOG) || !defined(CONFIG_GRKERNSEC_NO_RBAC))
+extern void gr_learn_resource(const struct task_struct *task, const int res,
+			      const unsigned long wanted, const int gt);
+#else
+static inline void gr_learn_resource(const struct task_struct *task, const int res,
+				     const unsigned long wanted, const int gt)
+{
+}
+#endif
+
+#ifdef CONFIG_GRKERNSEC_RESLOG
+extern void gr_log_resource(const struct task_struct *task, const int res,
+				   const unsigned long wanted, const int gt);
+#else
+static inline void gr_log_resource(const struct task_struct *task, const int res,
+				   const unsigned long wanted, const int gt)
+{
+}
+#endif
+
+#ifdef CONFIG_GRKERNSEC
+void task_grsec_rbac(struct seq_file *m, struct task_struct *p);
+void gr_handle_vm86(void);
+void gr_handle_mem_readwrite(u64 from, u64 to);
+
+void gr_log_badprocpid(const char *entry);
+
+extern int grsec_enable_dmesg;
+extern int grsec_disable_privio;
+
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+extern kgid_t grsec_proc_gid;
+#endif
+
+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
+extern int grsec_enable_chroot_findtask;
+#endif
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern int grsec_enable_setxid;
+#endif
+#endif
+
+#endif
diff --git a/include/linux/grsock.h b/include/linux/grsock.h
new file mode 100644
index 0000000..e7ffaaf
--- /dev/null
+++ b/include/linux/grsock.h
@@ -0,0 +1,19 @@
+#ifndef __GRSOCK_H
+#define __GRSOCK_H
+
+extern void gr_attach_curr_ip(const struct sock *sk);
+extern int gr_handle_sock_all(const int family, const int type,
+			      const int protocol);
+extern int gr_handle_sock_server(const struct sockaddr *sck);
+extern int gr_handle_sock_server_other(const struct sock *sck);
+extern int gr_handle_sock_client(const struct sockaddr *sck);
+extern int gr_search_connect(struct socket * sock,
+			     struct sockaddr_in * addr);
+extern int gr_search_bind(struct socket * sock,
+			  struct sockaddr_in * addr);
+extern int gr_search_listen(struct socket * sock);
+extern int gr_search_accept(struct socket * sock);
+extern int gr_search_socket(const int domain, const int type,
+			    const int protocol);
+
+#endif
diff --git a/include/linux/hash.h b/include/linux/hash.h
index bd1754c..69b7715 100644
--- a/include/linux/hash.h
+++ b/include/linux/hash.h
@@ -37,6 +37,9 @@ static __always_inline u64 hash_64(u64 val, unsigned int bits)
 {
 	u64 hash = val;
 
+#if defined(CONFIG_ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
+	hash = hash * GOLDEN_RATIO_PRIME_64;
+#else
 	/*  Sigh, gcc can't optimise this alone like it does for 32 bits. */
 	u64 n = hash;
 	n <<= 18;
@@ -51,6 +54,7 @@ static __always_inline u64 hash_64(u64 val, unsigned int bits)
 	hash += n;
 	n <<= 2;
 	hash += n;
+#endif
 
 	/* High bits are more random, so use them. */
 	return hash >> (64 - bits);
@@ -83,7 +87,7 @@ static inline u32 hash32_ptr(const void *ptr)
 struct fast_hash_ops {
 	u32 (*hash)(const void *data, u32 len, u32 seed);
 	u32 (*hash2)(const u32 *data, u32 len, u32 seed);
-};
+} __no_const;
 
 /**
  *	arch_fast_hash - Caclulates a hash over a given buffer that can have
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 7fb31da..08b5114 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -189,6 +189,18 @@ static inline void clear_highpage(struct page *page)
 	kunmap_atomic(kaddr);
 }
 
+static inline void sanitize_highpage(struct page *page)
+{
+	void *kaddr;
+	unsigned long flags;
+
+	local_irq_save(flags);
+	kaddr = kmap_atomic(page);
+	clear_page(kaddr);
+	kunmap_atomic(kaddr);
+	local_irq_restore(flags);
+}
+
 static inline void zero_user_segments(struct page *page,
 	unsigned start1, unsigned end1,
 	unsigned start2, unsigned end2)
diff --git a/include/linux/hwmon-sysfs.h b/include/linux/hwmon-sysfs.h
index 1c7b89a..7dda400 100644
--- a/include/linux/hwmon-sysfs.h
+++ b/include/linux/hwmon-sysfs.h
@@ -25,7 +25,8 @@
 struct sensor_device_attribute{
 	struct device_attribute dev_attr;
 	int index;
-};
+} __do_const;
+typedef struct sensor_device_attribute __no_const sensor_device_attribute_no_const;
 #define to_sensor_dev_attr(_dev_attr) \
 	container_of(_dev_attr, struct sensor_device_attribute, dev_attr)
 
@@ -41,7 +42,8 @@ struct sensor_device_attribute_2 {
 	struct device_attribute dev_attr;
 	u8 index;
 	u8 nr;
-};
+} __do_const;
+typedef struct sensor_device_attribute_2 __no_const sensor_device_attribute_2_no_const;
 #define to_sensor_dev_attr_2(_dev_attr) \
 	container_of(_dev_attr, struct sensor_device_attribute_2, dev_attr)
 
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index b556e0a..c10a515 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -378,6 +378,7 @@ struct i2c_algorithm {
 	/* To determine what the adapter supports */
 	u32 (*functionality) (struct i2c_adapter *);
 };
+typedef struct i2c_algorithm __no_const i2c_algorithm_no_const;
 
 /**
  * struct i2c_bus_recovery_info - I2C bus recovery information
diff --git a/include/linux/i2o.h b/include/linux/i2o.h
index d23c3c2..eb63c81 100644
--- a/include/linux/i2o.h
+++ b/include/linux/i2o.h
@@ -565,7 +565,7 @@ struct i2o_controller {
 	struct i2o_device *exec;	/* Executive */
 #if BITS_PER_LONG == 64
 	spinlock_t context_list_lock;	/* lock for context_list */
-	atomic_t context_list_counter;	/* needed for unique contexts */
+	atomic_unchecked_t context_list_counter;	/* needed for unique contexts */
 	struct list_head context_list;	/* list of context id's
 					   and pointers */
 #endif
diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
index aff7ad8..3942bbd 100644
--- a/include/linux/if_pppox.h
+++ b/include/linux/if_pppox.h
@@ -76,7 +76,7 @@ struct pppox_proto {
 	int		(*ioctl)(struct socket *sock, unsigned int cmd,
 				 unsigned long arg);
 	struct module	*owner;
-};
+} __do_const;
 
 extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp);
 extern void unregister_pppox_proto(int proto_num);
diff --git a/include/linux/init.h b/include/linux/init.h
index 2df8e8d..3e1280d 100644
--- a/include/linux/init.h
+++ b/include/linux/init.h
@@ -37,9 +37,17 @@
  * section.
  */
 
+#define add_init_latent_entropy __latent_entropy
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+#define add_meminit_latent_entropy
+#else
+#define add_meminit_latent_entropy __latent_entropy
+#endif
+
 /* These are for everybody (although not all archs will actually
    discard it in modules) */
-#define __init		__section(.init.text) __cold notrace
+#define __init		__section(.init.text) __cold notrace add_init_latent_entropy
 #define __initdata	__section(.init.data)
 #define __initconst	__constsection(.init.rodata)
 #define __exitdata	__section(.exit.data)
@@ -100,7 +108,7 @@
 #define __cpuexitconst
 
 /* Used for MEMORY_HOTPLUG */
-#define __meminit        __section(.meminit.text) __cold notrace
+#define __meminit        __section(.meminit.text) __cold notrace add_meminit_latent_entropy
 #define __meminitdata    __section(.meminit.data)
 #define __meminitconst   __constsection(.meminit.rodata)
 #define __memexit        __section(.memexit.text) __exitused __cold notrace
diff --git a/include/linux/init_task.h b/include/linux/init_task.h
index 6df7f9f..d0bf699 100644
--- a/include/linux/init_task.h
+++ b/include/linux/init_task.h
@@ -156,6 +156,12 @@ extern struct task_group root_task_group;
 
 #define INIT_TASK_COMM "swapper"
 
+#ifdef CONFIG_X86
+#define INIT_TASK_THREAD_INFO .tinfo = INIT_THREAD_INFO,
+#else
+#define INIT_TASK_THREAD_INFO
+#endif
+
 #ifdef CONFIG_RT_MUTEXES
 # define INIT_RT_MUTEXES(tsk)						\
 	.pi_waiters = RB_ROOT,						\
@@ -203,6 +209,7 @@ extern struct task_group root_task_group;
 	RCU_POINTER_INITIALIZER(cred, &init_cred),			\
 	.comm		= INIT_TASK_COMM,				\
 	.thread		= INIT_THREAD,					\
+	INIT_TASK_THREAD_INFO						\
 	.fs		= &init_fs,					\
 	.files		= &init_files,					\
 	.signal		= &init_signals,				\
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 698ad05..8601bb7 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -418,8 +418,8 @@ extern const char * const softirq_to_name[NR_SOFTIRQS];
 
 struct softirq_action
 {
-	void	(*action)(struct softirq_action *);
-};
+	void	(*action)(void);
+} __no_const;
 
 asmlinkage void do_softirq(void);
 asmlinkage void __do_softirq(void);
@@ -433,7 +433,7 @@ static inline void do_softirq_own_stack(void)
 }
 #endif
 
-extern void open_softirq(int nr, void (*action)(struct softirq_action *));
+extern void open_softirq(int nr, void (*action)(void));
 extern void softirq_init(void);
 extern void __raise_softirq_irqoff(unsigned int nr);
 
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index b96a5b2..2732d1c 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -131,7 +131,7 @@ struct iommu_ops {
 	u32 (*domain_get_windows)(struct iommu_domain *domain);
 
 	unsigned long pgsize_bitmap;
-};
+} __do_const;
 
 #define IOMMU_GROUP_NOTIFY_ADD_DEVICE		1 /* Device added */
 #define IOMMU_GROUP_NOTIFY_DEL_DEVICE		2 /* Pre Device removed */
diff --git a/include/linux/ioport.h b/include/linux/ioport.h
index 5e3a906..3131d0f 100644
--- a/include/linux/ioport.h
+++ b/include/linux/ioport.h
@@ -161,7 +161,7 @@ struct resource *lookup_resource(struct resource *root, resource_size_t start);
 int adjust_resource(struct resource *res, resource_size_t start,
 		    resource_size_t size);
 resource_size_t resource_alignment(struct resource *res);
-static inline resource_size_t resource_size(const struct resource *res)
+static inline resource_size_t __intentional_overflow(-1) resource_size(const struct resource *res)
 {
 	return res->end - res->start + 1;
 }
diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index 35e7eca..6afb7ad 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -69,7 +69,7 @@ struct ipc_namespace {
 	struct user_namespace *user_ns;
 
 	unsigned int	proc_inum;
-};
+} __randomize_layout;
 
 extern struct ipc_namespace init_ipc_ns;
 extern atomic_t nr_ipc_ns;
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 0d998d8..3a1c782 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -344,7 +344,8 @@ struct irq_chip {
 	void		(*irq_release_resources)(struct irq_data *data);
 
 	unsigned long	flags;
-};
+} __do_const;
+typedef struct irq_chip __no_const irq_chip_no_const;
 
 /*
  * irq_chip specific flags
diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
index 45e2d8c..26d85da 100644
--- a/include/linux/irqchip/arm-gic.h
+++ b/include/linux/irqchip/arm-gic.h
@@ -75,9 +75,11 @@
 
 #ifndef __ASSEMBLY__
 
+#include <linux/irq.h>
+
 struct device_node;
 
-extern struct irq_chip gic_arch_extn;
+extern irq_chip_no_const gic_arch_extn;
 
 void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *,
 		    u32 offset, struct device_node *);
diff --git a/include/linux/isdn_ppp.h b/include/linux/isdn_ppp.h
index 8e10f57..d5f62bc 100644
--- a/include/linux/isdn_ppp.h
+++ b/include/linux/isdn_ppp.h
@@ -180,8 +180,9 @@ struct ippp_struct {
   struct slcompress *slcomp;
 #endif
 #ifdef CONFIG_IPPP_FILTER
-  struct sk_filter *pass_filter;   /* filter for packets to pass */
-  struct sk_filter *active_filter; /* filter for pkts to reset idle */
+  struct sock_filter *pass_filter;	/* filter for packets to pass */
+  struct sock_filter *active_filter;	/* filter for pkts to reset idle */
+  unsigned pass_len, active_len;
 #endif
   unsigned long debug;
   struct isdn_ppp_compressor *compressor,*decompressor;
diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
index 1f44466..b481806 100644
--- a/include/linux/jiffies.h
+++ b/include/linux/jiffies.h
@@ -292,20 +292,20 @@ extern unsigned long preset_lpj;
 /*
  * Convert various time units to each other:
  */
-extern unsigned int jiffies_to_msecs(const unsigned long j);
-extern unsigned int jiffies_to_usecs(const unsigned long j);
+extern unsigned int jiffies_to_msecs(const unsigned long j) __intentional_overflow(-1);
+extern unsigned int jiffies_to_usecs(const unsigned long j) __intentional_overflow(-1);
 
-static inline u64 jiffies_to_nsecs(const unsigned long j)
+static inline u64 __intentional_overflow(-1) jiffies_to_nsecs(const unsigned long j)
 {
 	return (u64)jiffies_to_usecs(j) * NSEC_PER_USEC;
 }
 
-extern unsigned long msecs_to_jiffies(const unsigned int m);
-extern unsigned long usecs_to_jiffies(const unsigned int u);
+extern unsigned long msecs_to_jiffies(const unsigned int m) __intentional_overflow(-1);
+extern unsigned long usecs_to_jiffies(const unsigned int u) __intentional_overflow(-1);
 extern unsigned long timespec_to_jiffies(const struct timespec *value);
 extern void jiffies_to_timespec(const unsigned long jiffies,
-				struct timespec *value);
-extern unsigned long timeval_to_jiffies(const struct timeval *value);
+				struct timespec *value) __intentional_overflow(-1);
+extern unsigned long timeval_to_jiffies(const struct timeval *value) __intentional_overflow(-1);
 extern void jiffies_to_timeval(const unsigned long jiffies,
 			       struct timeval *value);
 
diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
index 6883e19..e854fcb 100644
--- a/include/linux/kallsyms.h
+++ b/include/linux/kallsyms.h
@@ -15,7 +15,8 @@
 
 struct module;
 
-#ifdef CONFIG_KALLSYMS
+#if !defined(__INCLUDED_BY_HIDESYM) || !defined(CONFIG_KALLSYMS)
+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 /* Lookup the address for a symbol. Returns 0 if not found. */
 unsigned long kallsyms_lookup_name(const char *name);
 
@@ -106,6 +107,21 @@ static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, u
 /* Stupid that this does nothing, but I didn't create this mess. */
 #define __print_symbol(fmt, addr)
 #endif /*CONFIG_KALLSYMS*/
+#else /* when included by kallsyms.c, vsnprintf.c, kprobes.c, or
+	arch/x86/kernel/dumpstack.c, with HIDESYM enabled */
+extern unsigned long kallsyms_lookup_name(const char *name);
+extern void __print_symbol(const char *fmt, unsigned long address);
+extern int sprint_backtrace(char *buffer, unsigned long address);
+extern int sprint_symbol(char *buffer, unsigned long address);
+extern int sprint_symbol_no_offset(char *buffer, unsigned long address);
+const char *kallsyms_lookup(unsigned long addr,
+			    unsigned long *symbolsize,
+			    unsigned long *offset,
+			    char **modname, char *namebuf);
+extern int kallsyms_lookup_size_offset(unsigned long addr,
+				  unsigned long *symbolsize,
+				  unsigned long *offset);
+#endif
 
 /* This macro allows us to keep printk typechecking */
 static __printf(1, 2)
diff --git a/include/linux/key-type.h b/include/linux/key-type.h
index a74c3a8..28d3f21 100644
--- a/include/linux/key-type.h
+++ b/include/linux/key-type.h
@@ -131,7 +131,7 @@ struct key_type {
 	/* internal fields */
 	struct list_head	link;		/* link in types list */
 	struct lock_class_key	lock_class;	/* key->sem lock class */
-};
+} __do_const;
 
 extern struct key_type key_type_keyring;
 
diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
index 6b06d37..c134867 100644
--- a/include/linux/kgdb.h
+++ b/include/linux/kgdb.h
@@ -52,7 +52,7 @@ extern int kgdb_connected;
 extern int kgdb_io_module_registered;
 
 extern atomic_t			kgdb_setting_breakpoint;
-extern atomic_t			kgdb_cpu_doing_single_step;
+extern atomic_unchecked_t	kgdb_cpu_doing_single_step;
 
 extern struct task_struct	*kgdb_usethread;
 extern struct task_struct	*kgdb_contthread;
@@ -254,7 +254,7 @@ struct kgdb_arch {
 	void	(*correct_hw_break)(void);
 
 	void	(*enable_nmi)(bool on);
-};
+} __do_const;
 
 /**
  * struct kgdb_io - Describe the interface for an I/O driver to talk with KGDB.
@@ -279,7 +279,7 @@ struct kgdb_io {
 	void			(*pre_exception) (void);
 	void			(*post_exception) (void);
 	int			is_console;
-};
+} __do_const;
 
 extern struct kgdb_arch		arch_kgdb_ops;
 
diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index 0555cc6..40116ce 100644
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -34,6 +34,8 @@ extern char modprobe_path[]; /* for sysctl */
  * usually useless though. */
 extern __printf(2, 3)
 int __request_module(bool wait, const char *name, ...);
+extern __printf(3, 4)
+int ___request_module(bool wait, char *param_name, const char *name, ...);
 #define request_module(mod...) __request_module(true, mod)
 #define request_module_nowait(mod...) __request_module(false, mod)
 #define try_then_request_module(x, mod...) \
@@ -57,6 +59,9 @@ struct subprocess_info {
 	struct work_struct work;
 	struct completion *complete;
 	char *path;
+#ifdef CONFIG_GRKERNSEC
+	char *origpath;
+#endif
 	char **argv;
 	char **envp;
 	int wait;
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 2d61b90..a1d0a13 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -118,7 +118,7 @@ struct kobj_type {
 	struct attribute **default_attrs;
 	const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
 	const void *(*namespace)(struct kobject *kobj);
-};
+} __do_const;
 
 struct kobj_uevent_env {
 	char *argv[3];
@@ -142,6 +142,7 @@ struct kobj_attribute {
 	ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr,
 			 const char *buf, size_t count);
 };
+typedef struct kobj_attribute __no_const kobj_attribute_no_const;
 
 extern const struct sysfs_ops kobj_sysfs_ops;
 
@@ -169,7 +170,7 @@ struct kset {
 	spinlock_t list_lock;
 	struct kobject kobj;
 	const struct kset_uevent_ops *uevent_ops;
-};
+} __randomize_layout;
 
 extern void kset_init(struct kset *kset);
 extern int __must_check kset_register(struct kset *kset);
diff --git a/include/linux/kobject_ns.h b/include/linux/kobject_ns.h
index df32d25..fb52e27 100644
--- a/include/linux/kobject_ns.h
+++ b/include/linux/kobject_ns.h
@@ -44,7 +44,7 @@ struct kobj_ns_type_operations {
 	const void *(*netlink_ns)(struct sock *sk);
 	const void *(*initial_ns)(void);
 	void (*drop_ns)(void *);
-};
+} __do_const;
 
 int kobj_ns_type_register(const struct kobj_ns_type_operations *ops);
 int kobj_ns_type_registered(enum kobj_ns_type type);
diff --git a/include/linux/kref.h b/include/linux/kref.h
index 484604d..0f6c5b6 100644
--- a/include/linux/kref.h
+++ b/include/linux/kref.h
@@ -68,7 +68,7 @@ static inline void kref_get(struct kref *kref)
 static inline int kref_sub(struct kref *kref, unsigned int count,
 	     void (*release)(struct kref *kref))
 {
-	WARN_ON(release == NULL);
+	BUG_ON(release == NULL);
 
 	if (atomic_sub_and_test((int) count, &kref->refcount)) {
 		release(kref);
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index ec4e3bd..14db03a 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -468,7 +468,7 @@ static inline void kvm_irqfd_exit(void)
 {
 }
 #endif
-int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
+int kvm_init(const void *opaque, unsigned vcpu_size, unsigned vcpu_align,
 		  struct module *module);
 void kvm_exit(void);
 
@@ -634,7 +634,7 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
 					struct kvm_guest_debug *dbg);
 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
 
-int kvm_arch_init(void *opaque);
+int kvm_arch_init(const void *opaque);
 void kvm_arch_exit(void);
 
 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 92abb49..e7fff2a 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -976,7 +976,7 @@ struct ata_port_operations {
 	 * fields must be pointers.
 	 */
 	const struct ata_port_operations	*inherits;
-};
+} __do_const;
 
 struct ata_port_info {
 	unsigned long		flags;
diff --git a/include/linux/linkage.h b/include/linux/linkage.h
index a6a42dd..6c5ebce 100644
--- a/include/linux/linkage.h
+++ b/include/linux/linkage.h
@@ -36,6 +36,7 @@
 #endif
 
 #define __page_aligned_data	__section(.data..page_aligned) __aligned(PAGE_SIZE)
+#define __page_aligned_rodata	__read_only __aligned(PAGE_SIZE)
 #define __page_aligned_bss	__section(.bss..page_aligned) __aligned(PAGE_SIZE)
 
 /*
diff --git a/include/linux/list.h b/include/linux/list.h
index ef95941..82db65a 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -112,6 +112,19 @@ extern void __list_del_entry(struct list_head *entry);
 extern void list_del(struct list_head *entry);
 #endif
 
+extern void __pax_list_add(struct list_head *new,
+			      struct list_head *prev,
+			      struct list_head *next);
+static inline void pax_list_add(struct list_head *new, struct list_head *head)
+{
+	__pax_list_add(new, head, head->next);
+}
+static inline void pax_list_add_tail(struct list_head *new, struct list_head *head)
+{
+	__pax_list_add(new, head->prev, head);
+}
+extern void pax_list_del(struct list_head *entry);
+
 /**
  * list_replace - replace old entry by new one
  * @old : the element to be replaced
@@ -145,6 +158,8 @@ static inline void list_del_init(struct list_head *entry)
 	INIT_LIST_HEAD(entry);
 }
 
+extern void pax_list_del_init(struct list_head *entry);
+
 /**
  * list_move - delete from one list and add as another's head
  * @list: the entry to move
diff --git a/include/linux/lockref.h b/include/linux/lockref.h
index 4bfde0e..d6e2e09 100644
--- a/include/linux/lockref.h
+++ b/include/linux/lockref.h
@@ -47,4 +47,36 @@ static inline int __lockref_is_dead(const struct lockref *l)
 	return ((int)l->count < 0);
 }
 
+static inline unsigned int __lockref_read(struct lockref *lockref)
+{
+	return lockref->count;
+}
+
+static inline void __lockref_set(struct lockref *lockref, unsigned int count)
+{
+	lockref->count = count;
+}
+
+static inline void __lockref_inc(struct lockref *lockref)
+{
+
+#ifdef CONFIG_PAX_REFCOUNT
+	atomic_inc((atomic_t *)&lockref->count);
+#else
+	lockref->count++;
+#endif
+
+}
+
+static inline void __lockref_dec(struct lockref *lockref)
+{
+
+#ifdef CONFIG_PAX_REFCOUNT
+	atomic_dec((atomic_t *)&lockref->count);
+#else
+	lockref->count--;
+#endif
+
+}
+
 #endif /* __LINUX_LOCKREF_H */
diff --git a/include/linux/math64.h b/include/linux/math64.h
index c45c089..298841c 100644
--- a/include/linux/math64.h
+++ b/include/linux/math64.h
@@ -15,7 +15,7 @@
  * This is commonly provided by 32bit archs to provide an optimized 64bit
  * divide.
  */
-static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
+static inline u64 __intentional_overflow(-1) div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
 {
 	*remainder = dividend % divisor;
 	return dividend / divisor;
@@ -42,7 +42,7 @@ static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder)
 /**
  * div64_u64 - unsigned 64bit divide with 64bit divisor
  */
-static inline u64 div64_u64(u64 dividend, u64 divisor)
+static inline u64 __intentional_overflow(-1) div64_u64(u64 dividend, u64 divisor)
 {
 	return dividend / divisor;
 }
@@ -61,7 +61,7 @@ static inline s64 div64_s64(s64 dividend, s64 divisor)
 #define div64_ul(x, y)   div_u64((x), (y))
 
 #ifndef div_u64_rem
-static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
+static inline u64 __intentional_overflow(-1) div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
 {
 	*remainder = do_div(dividend, divisor);
 	return dividend;
@@ -77,7 +77,7 @@ extern u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder);
 #endif
 
 #ifndef div64_u64
-extern u64 div64_u64(u64 dividend, u64 divisor);
+extern u64 __intentional_overflow(-1) div64_u64(u64 dividend, u64 divisor);
 #endif
 
 #ifndef div64_s64
@@ -94,7 +94,7 @@ extern s64 div64_s64(s64 dividend, s64 divisor);
  * divide.
  */
 #ifndef div_u64
-static inline u64 div_u64(u64 dividend, u32 divisor)
+static inline u64 __intentional_overflow(-1) div_u64(u64 dividend, u32 divisor)
 {
 	u32 remainder;
 	return div_u64_rem(dividend, divisor, &remainder);
diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
index f230a97..714c006 100644
--- a/include/linux/mempolicy.h
+++ b/include/linux/mempolicy.h
@@ -91,6 +91,10 @@ static inline struct mempolicy *mpol_dup(struct mempolicy *pol)
 }
 
 #define vma_policy(vma) ((vma)->vm_policy)
+static inline void set_vma_policy(struct vm_area_struct *vma, struct mempolicy *pol)
+{
+	vma->vm_policy = pol;
+}
 
 static inline void mpol_get(struct mempolicy *pol)
 {
@@ -228,6 +232,9 @@ static inline void mpol_free_shared_policy(struct shared_policy *p)
 }
 
 #define vma_policy(vma) NULL
+static inline void set_vma_policy(struct vm_area_struct *vma, struct mempolicy *pol)
+{
+}
 
 static inline int
 vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index e03dd29..eaf923c 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -127,6 +127,11 @@ extern unsigned int kobjsize(const void *objp);
 #define VM_HUGETLB	0x00400000	/* Huge TLB Page VM */
 #define VM_NONLINEAR	0x00800000	/* Is non-linear (remap_file_pages) */
 #define VM_ARCH_1	0x01000000	/* Architecture-specific flag */
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
+#define VM_PAGEEXEC	0x02000000	/* vma->vm_page_prot needs special handling */
+#endif
+
 #define VM_DONTDUMP	0x04000000	/* Do not include in the core dump */
 
 #ifdef CONFIG_MEM_SOFT_DIRTY
@@ -237,8 +242,8 @@ struct vm_operations_struct {
 	/* called by access_process_vm when get_user_pages() fails, typically
 	 * for use by special VMAs that can switch between memory and hardware
 	 */
-	int (*access)(struct vm_area_struct *vma, unsigned long addr,
-		      void *buf, int len, int write);
+	ssize_t (*access)(struct vm_area_struct *vma, unsigned long addr,
+		      void *buf, size_t len, int write);
 
 	/* Called by the /proc/PID/maps code to ask the vma whether it
 	 * has a special name.  Returning non-NULL will also cause this
@@ -274,6 +279,7 @@ struct vm_operations_struct {
 	int (*remap_pages)(struct vm_area_struct *vma, unsigned long addr,
 			   unsigned long size, pgoff_t pgoff);
 };
+typedef struct vm_operations_struct __no_const vm_operations_struct_no_const;
 
 struct mmu_gather;
 struct inode;
@@ -1144,8 +1150,8 @@ int follow_pfn(struct vm_area_struct *vma, unsigned long address,
 	unsigned long *pfn);
 int follow_phys(struct vm_area_struct *vma, unsigned long address,
 		unsigned int flags, unsigned long *prot, resource_size_t *phys);
-int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
-			void *buf, int len, int write);
+ssize_t generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
+			void *buf, size_t len, int write);
 
 static inline void unmap_shared_mapping_range(struct address_space *mapping,
 		loff_t const holebegin, loff_t const holelen)
@@ -1184,9 +1190,9 @@ static inline int fixup_user_fault(struct task_struct *tsk,
 }
 #endif
 
-extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write);
-extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
-		void *buf, int len, int write);
+extern ssize_t access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, size_t len, int write);
+extern ssize_t access_remote_vm(struct mm_struct *mm, unsigned long addr,
+		void *buf, size_t len, int write);
 
 long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
 		      unsigned long start, unsigned long nr_pages,
@@ -1219,34 +1225,6 @@ int set_page_dirty_lock(struct page *page);
 int clear_page_dirty_for_io(struct page *page);
 int get_cmdline(struct task_struct *task, char *buffer, int buflen);
 
-/* Is the vma a continuation of the stack vma above it? */
-static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr)
-{
-	return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN);
-}
-
-static inline int stack_guard_page_start(struct vm_area_struct *vma,
-					     unsigned long addr)
-{
-	return (vma->vm_flags & VM_GROWSDOWN) &&
-		(vma->vm_start == addr) &&
-		!vma_growsdown(vma->vm_prev, addr);
-}
-
-/* Is the vma a continuation of the stack vma below it? */
-static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr)
-{
-	return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP);
-}
-
-static inline int stack_guard_page_end(struct vm_area_struct *vma,
-					   unsigned long addr)
-{
-	return (vma->vm_flags & VM_GROWSUP) &&
-		(vma->vm_end == addr) &&
-		!vma_growsup(vma->vm_next, addr);
-}
-
 extern pid_t
 vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group);
 
@@ -1346,6 +1324,15 @@ static inline void sync_mm_rss(struct mm_struct *mm)
 }
 #endif
 
+#ifdef CONFIG_MMU
+pgprot_t vm_get_page_prot(vm_flags_t vm_flags);
+#else
+static inline pgprot_t vm_get_page_prot(vm_flags_t vm_flags)
+{
+	return __pgprot(0);
+}
+#endif
+
 int vma_wants_writenotify(struct vm_area_struct *vma);
 
 extern pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
@@ -1364,8 +1351,15 @@ static inline int __pud_alloc(struct mm_struct *mm, pgd_t *pgd,
 {
 	return 0;
 }
+
+static inline int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd,
+						unsigned long address)
+{
+	return 0;
+}
 #else
 int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address);
+int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address);
 #endif
 
 #ifdef __PAGETABLE_PMD_FOLDED
@@ -1374,8 +1368,15 @@ static inline int __pmd_alloc(struct mm_struct *mm, pud_t *pud,
 {
 	return 0;
 }
+
+static inline int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud,
+						unsigned long address)
+{
+	return 0;
+}
 #else
 int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address);
+int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address);
 #endif
 
 int __pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
@@ -1393,11 +1394,23 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long a
 		NULL: pud_offset(pgd, address);
 }
 
+static inline pud_t *pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
+{
+	return (unlikely(pgd_none(*pgd)) && __pud_alloc_kernel(mm, pgd, address))?
+		NULL: pud_offset(pgd, address);
+}
+
 static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
 {
 	return (unlikely(pud_none(*pud)) && __pmd_alloc(mm, pud, address))?
 		NULL: pmd_offset(pud, address);
 }
+
+static inline pmd_t *pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address)
+{
+	return (unlikely(pud_none(*pud)) && __pmd_alloc_kernel(mm, pud, address))?
+		NULL: pmd_offset(pud, address);
+}
 #endif /* CONFIG_MMU && !__ARCH_HAS_4LEVEL_HACK */
 
 #if USE_SPLIT_PTE_PTLOCKS
@@ -1796,7 +1809,7 @@ extern int install_special_mapping(struct mm_struct *mm,
 				   unsigned long addr, unsigned long len,
 				   unsigned long flags, struct page **pages);
 
-extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
+extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long) __intentional_overflow(-1);
 
 extern unsigned long mmap_region(struct file *file, unsigned long addr,
 	unsigned long len, vm_flags_t vm_flags, unsigned long pgoff);
@@ -1804,6 +1817,7 @@ extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 	unsigned long len, unsigned long prot, unsigned long flags,
 	unsigned long pgoff, unsigned long *populate);
 extern int do_munmap(struct mm_struct *, unsigned long, size_t);
+extern int __do_munmap(struct mm_struct *, unsigned long, size_t);
 
 #ifdef CONFIG_MMU
 extern int __mm_populate(unsigned long addr, unsigned long len,
@@ -1832,10 +1846,11 @@ struct vm_unmapped_area_info {
 	unsigned long high_limit;
 	unsigned long align_mask;
 	unsigned long align_offset;
+	unsigned long threadstack_offset;
 };
 
-extern unsigned long unmapped_area(struct vm_unmapped_area_info *info);
-extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info);
+extern unsigned long unmapped_area(const struct vm_unmapped_area_info *info);
+extern unsigned long unmapped_area_topdown(const struct vm_unmapped_area_info *info);
 
 /*
  * Search for an unmapped address range.
@@ -1847,7 +1862,7 @@ extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info);
  * - satisfies (begin_addr & align_mask) == (align_offset & align_mask)
  */
 static inline unsigned long
-vm_unmapped_area(struct vm_unmapped_area_info *info)
+vm_unmapped_area(const struct vm_unmapped_area_info *info)
 {
 	if (!(info->flags & VM_UNMAPPED_AREA_TOPDOWN))
 		return unmapped_area(info);
@@ -1909,6 +1924,10 @@ extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long add
 extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned long addr,
 					     struct vm_area_struct **pprev);
 
+extern struct vm_area_struct *pax_find_mirror_vma(struct vm_area_struct *vma);
+extern __must_check long pax_mirror_vma(struct vm_area_struct *vma_m, struct vm_area_struct *vma);
+extern void pax_mirror_file_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl);
+
 /* Look up the first VMA which intersects the interval start_addr..end_addr-1,
    NULL if none.  Assume start_addr < end_addr. */
 static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * mm, unsigned long start_addr, unsigned long end_addr)
@@ -1937,15 +1956,6 @@ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm,
 	return vma;
 }
 
-#ifdef CONFIG_MMU
-pgprot_t vm_get_page_prot(unsigned long vm_flags);
-#else
-static inline pgprot_t vm_get_page_prot(unsigned long vm_flags)
-{
-	return __pgprot(0);
-}
-#endif
-
 #ifdef CONFIG_NUMA_BALANCING
 unsigned long change_prot_numa(struct vm_area_struct *vma,
 			unsigned long start, unsigned long end);
@@ -1997,6 +2007,11 @@ void vm_stat_account(struct mm_struct *, unsigned long, struct file *, long);
 static inline void vm_stat_account(struct mm_struct *mm,
 			unsigned long flags, struct file *file, long pages)
 {
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP) || (flags & (VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)))
+#endif
+
 	mm->total_vm += pages;
 }
 #endif /* CONFIG_PROC_FS */
@@ -2078,7 +2093,7 @@ extern int unpoison_memory(unsigned long pfn);
 extern int sysctl_memory_failure_early_kill;
 extern int sysctl_memory_failure_recovery;
 extern void shake_page(struct page *p, int access);
-extern atomic_long_t num_poisoned_pages;
+extern atomic_long_unchecked_t num_poisoned_pages;
 extern int soft_offline_page(struct page *page, int flags);
 
 #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS)
@@ -2113,5 +2128,11 @@ void __init setup_nr_node_ids(void);
 static inline void setup_nr_node_ids(void) {}
 #endif
 
+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
+extern void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot);
+#else
+static inline void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot) {}
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 96c5750..15668ba 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -308,7 +308,9 @@ struct vm_area_struct {
 #ifdef CONFIG_NUMA
 	struct mempolicy *vm_policy;	/* NUMA policy for the VMA */
 #endif
-};
+
+	struct vm_area_struct *vm_mirror;/* PaX: mirror vma or NULL */
+} __randomize_layout;
 
 struct core_thread {
 	struct task_struct *task;
@@ -454,7 +456,25 @@ struct mm_struct {
 	bool tlb_flush_pending;
 #endif
 	struct uprobes_state uprobes_state;
-};
+
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+	unsigned long pax_flags;
+#endif
+
+#ifdef CONFIG_PAX_DLRESOLVE
+	unsigned long call_dl_resolve;
+#endif
+
+#if defined(CONFIG_PPC32) && defined(CONFIG_PAX_EMUSIGRT)
+	unsigned long call_syscall;
+#endif
+
+#ifdef CONFIG_PAX_ASLR
+	unsigned long delta_mmap;		/* randomized offset */
+	unsigned long delta_stack;		/* randomized offset */
+#endif
+
+} __randomize_layout;
 
 static inline void mm_init_cpumask(struct mm_struct *mm)
 {
diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h
index c5d5278..f0b68c8 100644
--- a/include/linux/mmiotrace.h
+++ b/include/linux/mmiotrace.h
@@ -46,7 +46,7 @@ extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
 /* Called from ioremap.c */
 extern void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
 							void __iomem *addr);
-extern void mmiotrace_iounmap(volatile void __iomem *addr);
+extern void mmiotrace_iounmap(const volatile void __iomem *addr);
 
 /* For anyone to insert markers. Remember trailing newline. */
 extern __printf(1, 2) int mmiotrace_printk(const char *fmt, ...);
@@ -66,7 +66,7 @@ static inline void mmiotrace_ioremap(resource_size_t offset,
 {
 }
 
-static inline void mmiotrace_iounmap(volatile void __iomem *addr)
+static inline void mmiotrace_iounmap(const volatile void __iomem *addr)
 {
 }
 
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 6cbd1b6..b1d2f99 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -412,7 +412,7 @@ struct zone {
 	unsigned long		flags;		   /* zone flags, see below */
 
 	/* Zone statistics */
-	atomic_long_t		vm_stat[NR_VM_ZONE_STAT_ITEMS];
+	atomic_long_unchecked_t		vm_stat[NR_VM_ZONE_STAT_ITEMS];
 
 	/*
 	 * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 44eeef0..a92d3f9 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -139,7 +139,7 @@ struct usb_device_id {
 #define USB_DEVICE_ID_MATCH_INT_PROTOCOL	0x0200
 #define USB_DEVICE_ID_MATCH_INT_NUMBER		0x0400
 
-#define HID_ANY_ID				(~0)
+#define HID_ANY_ID				(~0U)
 #define HID_BUS_ANY				0xffff
 #define HID_GROUP_ANY				0x0000
 
@@ -475,7 +475,7 @@ struct dmi_system_id {
 	const char *ident;
 	struct dmi_strmatch matches[4];
 	void *driver_data;
-};
+} __do_const;
 /*
  * struct dmi_device_id appears during expansion of
  * "MODULE_DEVICE_TABLE(dmi, x)". Compiler doesn't look inside it
diff --git a/include/linux/module.h b/include/linux/module.h
index f520a76..5f898ef 100644
--- a/include/linux/module.h
+++ b/include/linux/module.h
@@ -17,9 +17,11 @@
 #include <linux/moduleparam.h>
 #include <linux/jump_label.h>
 #include <linux/export.h>
+#include <linux/fs.h>
 
 #include <linux/percpu.h>
 #include <asm/module.h>
+#include <asm/pgtable.h>
 
 /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
 #define MODULE_SIG_STRING "~Module signature appended~\n"
@@ -42,7 +44,7 @@ struct module_kobject {
 	struct kobject *drivers_dir;
 	struct module_param_attrs *mp;
 	struct completion *kobj_completion;
-};
+} __randomize_layout;
 
 struct module_attribute {
 	struct attribute attr;
@@ -54,12 +56,13 @@ struct module_attribute {
 	int (*test)(struct module *);
 	void (*free)(struct module *);
 };
+typedef struct module_attribute __no_const module_attribute_no_const;
 
 struct module_version_attribute {
 	struct module_attribute mattr;
 	const char *module_name;
 	const char *version;
-} __attribute__ ((__aligned__(sizeof(void *))));
+} __do_const __attribute__ ((__aligned__(sizeof(void *))));
 
 extern ssize_t __modver_version_show(struct module_attribute *,
 				     struct module_kobject *, char *);
@@ -235,7 +238,7 @@ struct module {
 
 	/* Sysfs stuff. */
 	struct module_kobject mkobj;
-	struct module_attribute *modinfo_attrs;
+	module_attribute_no_const *modinfo_attrs;
 	const char *version;
 	const char *srcversion;
 	struct kobject *holders_dir;
@@ -284,19 +287,16 @@ struct module {
 	int (*init)(void);
 
 	/* If this is non-NULL, vfree after init() returns */
-	void *module_init;
+	void *module_init_rx, *module_init_rw;
 
 	/* Here is the actual code + data, vfree'd on unload. */
-	void *module_core;
+	void *module_core_rx, *module_core_rw;
 
 	/* Here are the sizes of the init and core sections */
-	unsigned int init_size, core_size;
+	unsigned int init_size_rw, core_size_rw;
 
 	/* The size of the executable code in each section.  */
-	unsigned int init_text_size, core_text_size;
-
-	/* Size of RO sections of the module (text+rodata) */
-	unsigned int init_ro_size, core_ro_size;
+	unsigned int init_size_rx, core_size_rx;
 
 	/* Arch-specific module values */
 	struct mod_arch_specific arch;
@@ -352,6 +352,10 @@ struct module {
 #ifdef CONFIG_EVENT_TRACING
 	struct ftrace_event_call **trace_events;
 	unsigned int num_trace_events;
+	struct file_operations trace_id;
+	struct file_operations trace_enable;
+	struct file_operations trace_format;
+	struct file_operations trace_filter;
 #endif
 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
 	unsigned int num_ftrace_callsites;
@@ -375,7 +379,7 @@ struct module {
 	ctor_fn_t *ctors;
 	unsigned int num_ctors;
 #endif
-};
+} __randomize_layout;
 #ifndef MODULE_ARCH_INIT
 #define MODULE_ARCH_INIT {}
 #endif
@@ -396,16 +400,46 @@ bool is_module_address(unsigned long addr);
 bool is_module_percpu_address(unsigned long addr);
 bool is_module_text_address(unsigned long addr);
 
+static inline int within_module_range(unsigned long addr, void *start, unsigned long size)
+{
+
+#ifdef CONFIG_PAX_KERNEXEC
+	if (ktla_ktva(addr) >= (unsigned long)start &&
+	    ktla_ktva(addr) < (unsigned long)start + size)
+		return 1;
+#endif
+
+	return ((void *)addr >= start && (void *)addr < start + size);
+}
+
+static inline int within_module_core_rx(unsigned long addr, const struct module *mod)
+{
+	return within_module_range(addr, mod->module_core_rx, mod->core_size_rx);
+}
+
+static inline int within_module_core_rw(unsigned long addr, const struct module *mod)
+{
+	return within_module_range(addr, mod->module_core_rw, mod->core_size_rw);
+}
+
+static inline int within_module_init_rx(unsigned long addr, const struct module *mod)
+{
+	return within_module_range(addr, mod->module_init_rx, mod->init_size_rx);
+}
+
+static inline int within_module_init_rw(unsigned long addr, const struct module *mod)
+{
+	return within_module_range(addr, mod->module_init_rw, mod->init_size_rw);
+}
+
 static inline int within_module_core(unsigned long addr, const struct module *mod)
 {
-	return (unsigned long)mod->module_core <= addr &&
-	       addr < (unsigned long)mod->module_core + mod->core_size;
+	return within_module_core_rx(addr, mod) || within_module_core_rw(addr, mod);
 }
 
 static inline int within_module_init(unsigned long addr, const struct module *mod)
 {
-	return (unsigned long)mod->module_init <= addr &&
-	       addr < (unsigned long)mod->module_init + mod->init_size;
+	return within_module_init_rx(addr, mod) || within_module_init_rw(addr, mod);
 }
 
 /* Search for module by name: must hold module_mutex. */
diff --git a/include/linux/moduleloader.h b/include/linux/moduleloader.h
index 560ca53..ef621ef 100644
--- a/include/linux/moduleloader.h
+++ b/include/linux/moduleloader.h
@@ -25,9 +25,21 @@ unsigned int arch_mod_section_prepend(struct module *mod, unsigned int section);
    sections.  Returns NULL on failure. */
 void *module_alloc(unsigned long size);
 
+#ifdef CONFIG_PAX_KERNEXEC
+void *module_alloc_exec(unsigned long size);
+#else
+#define module_alloc_exec(x) module_alloc(x)
+#endif
+
 /* Free memory returned from module_alloc. */
 void module_free(struct module *mod, void *module_region);
 
+#ifdef CONFIG_PAX_KERNEXEC
+void module_free_exec(struct module *mod, void *module_region);
+#else
+#define module_free_exec(x, y) module_free((x), (y))
+#endif
+
 /*
  * Apply the given relocation to the (simplified) ELF.  Return -error
  * or 0.
@@ -45,7 +57,9 @@ static inline int apply_relocate(Elf_Shdr *sechdrs,
 				 unsigned int relsec,
 				 struct module *me)
 {
+#ifdef CONFIG_MODULES
 	printk(KERN_ERR "module %s: REL relocation unsupported\n", me->name);
+#endif
 	return -ENOEXEC;
 }
 #endif
@@ -67,7 +81,9 @@ static inline int apply_relocate_add(Elf_Shdr *sechdrs,
 				     unsigned int relsec,
 				     struct module *me)
 {
+#ifdef CONFIG_MODULES
 	printk(KERN_ERR "module %s: REL relocation unsupported\n", me->name);
+#endif
 	return -ENOEXEC;
 }
 #endif
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index b1990c5..2a6e611 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -293,7 +293,7 @@ static inline void __kernel_param_unlock(void)
  * @len is usually just sizeof(string).
  */
 #define module_param_string(name, string, len, perm)			\
-	static const struct kparam_string __param_string_##name		\
+	static const struct kparam_string __param_string_##name __used	\
 		= { len, string };					\
 	__module_param_call(MODULE_PARAM_PREFIX, name,			\
 			    &param_ops_string,				\
@@ -432,7 +432,7 @@ extern int param_set_bint(const char *val, const struct kernel_param *kp);
  */
 #define module_param_array_named(name, array, type, nump, perm)		\
 	param_check_##type(name, &(array)[0]);				\
-	static const struct kparam_array __param_arr_##name		\
+	static const struct kparam_array __param_arr_##name __used	\
 	= { .max = ARRAY_SIZE(array), .num = nump,                      \
 	    .ops = &param_ops_##type,					\
 	    .elemsize = sizeof(array[0]), .elem = array };		\
diff --git a/include/linux/mount.h b/include/linux/mount.h
index b0c1e65..fd6baf1 100644
--- a/include/linux/mount.h
+++ b/include/linux/mount.h
@@ -66,7 +66,7 @@ struct vfsmount {
 	struct dentry *mnt_root;	/* root of the mounted tree */
 	struct super_block *mnt_sb;	/* pointer to superblock */
 	int mnt_flags;
-};
+} __randomize_layout;
 
 struct file; /* forward dec */
 
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 492de72..1bddcd4 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -19,7 +19,7 @@ struct nameidata {
 	unsigned	seq, m_seq;
 	int		last_type;
 	unsigned	depth;
-	char *saved_names[MAX_NESTED_LINKS + 1];
+	const char *saved_names[MAX_NESTED_LINKS + 1];
 };
 
 /*
@@ -83,12 +83,12 @@ extern void unlock_rename(struct dentry *, struct dentry *);
 
 extern void nd_jump_link(struct nameidata *nd, struct path *path);
 
-static inline void nd_set_link(struct nameidata *nd, char *path)
+static inline void nd_set_link(struct nameidata *nd, const char *path)
 {
 	nd->saved_names[nd->depth] = path;
 }
 
-static inline char *nd_get_link(struct nameidata *nd)
+static inline const char *nd_get_link(const struct nameidata *nd)
 {
 	return nd->saved_names[nd->depth];
 }
diff --git a/include/linux/net.h b/include/linux/net.h
index 17d8339..81656c0 100644
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -192,7 +192,7 @@ struct net_proto_family {
 	int		(*create)(struct net *net, struct socket *sock,
 				  int protocol, int kern);
 	struct module	*owner;
-};
+} __do_const;
 
 struct iovec;
 struct kvec;
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 66f9a04..056078d 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1145,6 +1145,7 @@ struct net_device_ops {
 							void *priv);
 	int			(*ndo_get_lock_subclass)(struct net_device *dev);
 };
+typedef struct net_device_ops __no_const net_device_ops_no_const;
 
 /**
  * enum net_device_priv_flags - &struct net_device priv_flags
@@ -1312,11 +1313,11 @@ struct net_device {
 	struct net_device_stats	stats;
 
 	/* dropped packets by core network, Do not use this in drivers */
-	atomic_long_t		rx_dropped;
-	atomic_long_t		tx_dropped;
+	atomic_long_unchecked_t	rx_dropped;
+	atomic_long_unchecked_t	tx_dropped;
 
 	/* Stats to monitor carrier on<->off transitions */
-	atomic_t		carrier_changes;
+	atomic_unchecked_t	carrier_changes;
 
 #ifdef CONFIG_WIRELESS_EXT
 	/* List of functions to handle Wireless Extensions (instead of ioctl).
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index 2077489..a15e561 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -84,7 +84,7 @@ struct nf_sockopt_ops {
 #endif
 	/* Use the module struct to lock set/get code in place */
 	struct module *owner;
-};
+} __do_const;
 
 /* Function to register/unregister hook points. */
 int nf_register_hook(struct nf_hook_ops *reg);
diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h
index e955d47..04a5338 100644
--- a/include/linux/netfilter/nfnetlink.h
+++ b/include/linux/netfilter/nfnetlink.h
@@ -19,7 +19,7 @@ struct nfnl_callback {
 			  const struct nlattr * const cda[]);
 	const struct nla_policy *policy;	/* netlink attribute policy */
 	const u_int16_t attr_count;		/* number of nlattr's */
-};
+} __do_const;
 
 struct nfnetlink_subsystem {
 	const char *name;
diff --git a/include/linux/netfilter/xt_gradm.h b/include/linux/netfilter/xt_gradm.h
new file mode 100644
index 0000000..33f4af8
--- /dev/null
+++ b/include/linux/netfilter/xt_gradm.h
@@ -0,0 +1,9 @@
+#ifndef _LINUX_NETFILTER_XT_GRADM_H
+#define _LINUX_NETFILTER_XT_GRADM_H 1
+
+struct xt_gradm_mtinfo {
+	__u16 flags;
+	__u16 invflags;
+};
+
+#endif
diff --git a/include/linux/nls.h b/include/linux/nls.h
index 520681b..2b7fabb 100644
--- a/include/linux/nls.h
+++ b/include/linux/nls.h
@@ -31,7 +31,7 @@ struct nls_table {
 	const unsigned char *charset2upper;
 	struct module *owner;
 	struct nls_table *next;
-};
+} __do_const;
 
 /* this value hold the maximum octet of charset */
 #define NLS_MAX_CHARSET_SIZE 6 /* for UTF-8 */
@@ -46,7 +46,7 @@ enum utf16_endian {
 /* nls_base.c */
 extern int __register_nls(struct nls_table *, struct module *);
 extern int unregister_nls(struct nls_table *);
-extern struct nls_table *load_nls(char *);
+extern struct nls_table *load_nls(const char *);
 extern void unload_nls(struct nls_table *);
 extern struct nls_table *load_nls_default(void);
 #define register_nls(nls) __register_nls((nls), THIS_MODULE)
diff --git a/include/linux/notifier.h b/include/linux/notifier.h
index d14a4c3..a078786 100644
--- a/include/linux/notifier.h
+++ b/include/linux/notifier.h
@@ -54,7 +54,8 @@ struct notifier_block {
 	notifier_fn_t notifier_call;
 	struct notifier_block __rcu *next;
 	int priority;
-};
+} __do_const;
+typedef struct notifier_block __no_const notifier_block_no_const;
 
 struct atomic_notifier_head {
 	spinlock_t lock;
diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
index b2a0f15..4d7da32 100644
--- a/include/linux/oprofile.h
+++ b/include/linux/oprofile.h
@@ -138,9 +138,9 @@ int oprofilefs_create_ulong(struct dentry * root,
 int oprofilefs_create_ro_ulong(struct dentry * root,
 	char const * name, ulong * val);
  
-/** Create a file for read-only access to an atomic_t. */
+/** Create a file for read-only access to an atomic_unchecked_t. */
 int oprofilefs_create_ro_atomic(struct dentry * root,
-	char const * name, atomic_t * val);
+	char const * name, atomic_unchecked_t * val);
  
 /** create a directory */
 struct dentry *oprofilefs_mkdir(struct dentry *parent, char const *name);
diff --git a/include/linux/padata.h b/include/linux/padata.h
index 4386946..f50c615 100644
--- a/include/linux/padata.h
+++ b/include/linux/padata.h
@@ -129,7 +129,7 @@ struct parallel_data {
 	struct padata_serial_queue	__percpu *squeue;
 	atomic_t			reorder_objects;
 	atomic_t			refcnt;
-	atomic_t			seq_nr;
+	atomic_unchecked_t		seq_nr;
 	struct padata_cpumask		cpumask;
 	spinlock_t                      lock ____cacheline_aligned;
 	unsigned int			processed;
diff --git a/include/linux/path.h b/include/linux/path.h
index d137218..be0c176 100644
--- a/include/linux/path.h
+++ b/include/linux/path.h
@@ -1,13 +1,15 @@
 #ifndef _LINUX_PATH_H
 #define _LINUX_PATH_H
 
+#include <linux/compiler.h>
+
 struct dentry;
 struct vfsmount;
 
 struct path {
 	struct vfsmount *mnt;
 	struct dentry *dentry;
-};
+} __randomize_layout;
 
 extern void path_get(const struct path *);
 extern void path_put(const struct path *);
diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
index 5f2e559..7d59314 100644
--- a/include/linux/pci_hotplug.h
+++ b/include/linux/pci_hotplug.h
@@ -71,7 +71,8 @@ struct hotplug_slot_ops {
 	int (*get_latch_status)		(struct hotplug_slot *slot, u8 *value);
 	int (*get_adapter_status)	(struct hotplug_slot *slot, u8 *value);
 	int (*reset_slot)		(struct hotplug_slot *slot, int probe);
-};
+} __do_const;
+typedef struct hotplug_slot_ops __no_const hotplug_slot_ops_no_const;
 
 /**
  * struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 707617a..28a2e7e 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -339,8 +339,8 @@ struct perf_event {
 
 	enum perf_event_active_state	state;
 	unsigned int			attach_state;
-	local64_t			count;
-	atomic64_t			child_count;
+	local64_t			count; /* PaX: fix it one day */
+	atomic64_unchecked_t		child_count;
 
 	/*
 	 * These are the total time in nanoseconds that the event
@@ -391,8 +391,8 @@ struct perf_event {
 	 * These accumulate total time (in nanoseconds) that children
 	 * events have been enabled and running, respectively.
 	 */
-	atomic64_t			child_total_time_enabled;
-	atomic64_t			child_total_time_running;
+	atomic64_unchecked_t		child_total_time_enabled;
+	atomic64_unchecked_t		child_total_time_running;
 
 	/*
 	 * Protect attach/detach and child_list:
@@ -722,7 +722,7 @@ static inline void perf_callchain_store(struct perf_callchain_entry *entry, u64
 		entry->ip[entry->nr++] = ip;
 }
 
-extern int sysctl_perf_event_paranoid;
+extern int sysctl_perf_event_legitimately_concerned;
 extern int sysctl_perf_event_mlock;
 extern int sysctl_perf_event_sample_rate;
 extern int sysctl_perf_cpu_time_max_percent;
@@ -737,19 +737,24 @@ extern int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
 		loff_t *ppos);
 
 
+static inline bool perf_paranoid_any(void)
+{
+	return sysctl_perf_event_legitimately_concerned > 2;
+}
+
 static inline bool perf_paranoid_tracepoint_raw(void)
 {
-	return sysctl_perf_event_paranoid > -1;
+	return sysctl_perf_event_legitimately_concerned > -1;
 }
 
 static inline bool perf_paranoid_cpu(void)
 {
-	return sysctl_perf_event_paranoid > 0;
+	return sysctl_perf_event_legitimately_concerned > 0;
 }
 
 static inline bool perf_paranoid_kernel(void)
 {
-	return sysctl_perf_event_paranoid > 1;
+	return sysctl_perf_event_legitimately_concerned > 1;
 }
 
 extern void perf_event_init(void);
@@ -880,7 +885,7 @@ struct perf_pmu_events_attr {
 	struct device_attribute attr;
 	u64 id;
 	const char *event_str;
-};
+} __do_const;
 
 #define PMU_EVENT_ATTR(_name, _var, _id, _show)				\
 static struct perf_pmu_events_attr _var = {				\
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index 7246ef3..1539ea4 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -43,7 +43,7 @@ struct pid_namespace {
 	int hide_pid;
 	int reboot;	/* group exit code if this pidns was rebooted */
 	unsigned int proc_inum;
-};
+} __randomize_layout;
 
 extern struct pid_namespace init_pid_ns;
 
diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
index eb8b8ac..62649e1 100644
--- a/include/linux/pipe_fs_i.h
+++ b/include/linux/pipe_fs_i.h
@@ -47,10 +47,10 @@ struct pipe_inode_info {
 	struct mutex mutex;
 	wait_queue_head_t wait;
 	unsigned int nrbufs, curbuf, buffers;
-	unsigned int readers;
-	unsigned int writers;
-	unsigned int files;
-	unsigned int waiting_writers;
+	atomic_t readers;
+	atomic_t writers;
+	atomic_t files;
+	atomic_t waiting_writers;
 	unsigned int r_counter;
 	unsigned int w_counter;
 	struct page *tmp_page;
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 72c0fe0..26918ed 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -620,6 +620,7 @@ extern int dev_pm_put_subsys_data(struct device *dev);
 struct dev_pm_domain {
 	struct dev_pm_ops	ops;
 };
+typedef struct dev_pm_domain __no_const dev_pm_domain_no_const;
 
 /*
  * The PM_EVENT_ messages are also used by drivers implementing the legacy
diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
index 7c1d252..0e7061d 100644
--- a/include/linux/pm_domain.h
+++ b/include/linux/pm_domain.h
@@ -44,11 +44,11 @@ struct gpd_dev_ops {
 	int (*thaw_early)(struct device *dev);
 	int (*thaw)(struct device *dev);
 	bool (*active_wakeup)(struct device *dev);
-};
+} __no_const;
 
 struct gpd_cpu_data {
 	unsigned int saved_exit_latency;
-	struct cpuidle_state *idle_state;
+	cpuidle_state_no_const *idle_state;
 };
 
 struct generic_pm_domain {
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index 43fd671..08c96ee 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -118,7 +118,7 @@ static inline bool pm_runtime_callbacks_present(struct device *dev)
 
 static inline void pm_runtime_mark_last_busy(struct device *dev)
 {
-	ACCESS_ONCE(dev->power.last_busy) = jiffies;
+	ACCESS_ONCE_RW(dev->power.last_busy) = jiffies;
 }
 
 #else /* !CONFIG_PM_RUNTIME */
diff --git a/include/linux/pnp.h b/include/linux/pnp.h
index 195aafc..49a7bc2 100644
--- a/include/linux/pnp.h
+++ b/include/linux/pnp.h
@@ -297,7 +297,7 @@ static inline void pnp_set_drvdata(struct pnp_dev *pdev, void *data)
 struct pnp_fixup {
 	char id[7];
 	void (*quirk_function) (struct pnp_dev * dev);	/* fixup function */
-};
+} __do_const;
 
 /* config parameters */
 #define PNP_CONFIG_NORMAL	0x0001
diff --git a/include/linux/poison.h b/include/linux/poison.h
index 2110a81..13a11bb 100644
--- a/include/linux/poison.h
+++ b/include/linux/poison.h
@@ -19,8 +19,8 @@
  * under normal circumstances, used to verify that nobody uses
  * non-initialized list entries.
  */
-#define LIST_POISON1  ((void *) 0x00100100 + POISON_POINTER_DELTA)
-#define LIST_POISON2  ((void *) 0x00200200 + POISON_POINTER_DELTA)
+#define LIST_POISON1  ((void *) (long)0xFFFFFF01)
+#define LIST_POISON2  ((void *) (long)0xFFFFFF02)
 
 /********** include/linux/timer.h **********/
 /*
diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
index d8b187c3..9a9257a 100644
--- a/include/linux/power/smartreflex.h
+++ b/include/linux/power/smartreflex.h
@@ -238,7 +238,7 @@ struct omap_sr_class_data {
 	int (*notify)(struct omap_sr *sr, u32 status);
 	u8 notify_flags;
 	u8 class_type;
-};
+} __do_const;
 
 /**
  * struct omap_sr_nvalue_table	- Smartreflex n-target value info
diff --git a/include/linux/ppp-comp.h b/include/linux/ppp-comp.h
index 4ea1d37..80f4b33 100644
--- a/include/linux/ppp-comp.h
+++ b/include/linux/ppp-comp.h
@@ -84,7 +84,7 @@ struct compressor {
 	struct module *owner;
 	/* Extra skb space needed by the compressor algorithm */
 	unsigned int comp_extra;
-};
+} __do_const;
 
 /*
  * The return value from decompress routine is the length of the
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index de83b4e..c4b997d 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -27,11 +27,16 @@ extern void preempt_count_sub(int val);
 #define preempt_count_dec_and_test() __preempt_count_dec_and_test()
 #endif
 
+#define raw_preempt_count_add(val)	__preempt_count_add(val)
+#define raw_preempt_count_sub(val)	__preempt_count_sub(val)
+
 #define __preempt_count_inc() __preempt_count_add(1)
 #define __preempt_count_dec() __preempt_count_sub(1)
 
 #define preempt_count_inc() preempt_count_add(1)
+#define raw_preempt_count_inc() raw_preempt_count_add(1)
 #define preempt_count_dec() preempt_count_sub(1)
+#define raw_preempt_count_dec() raw_preempt_count_sub(1)
 
 #ifdef CONFIG_PREEMPT_COUNT
 
@@ -41,6 +46,12 @@ do { \
 	barrier(); \
 } while (0)
 
+#define raw_preempt_disable() \
+do { \
+	raw_preempt_count_inc(); \
+	barrier(); \
+} while (0)
+
 #define sched_preempt_enable_no_resched() \
 do { \
 	barrier(); \
@@ -49,6 +60,12 @@ do { \
 
 #define preempt_enable_no_resched() sched_preempt_enable_no_resched()
 
+#define raw_preempt_enable_no_resched() \
+do { \
+	barrier(); \
+	raw_preempt_count_dec(); \
+} while (0)
+
 #ifdef CONFIG_PREEMPT
 #define preempt_enable() \
 do { \
@@ -113,8 +130,10 @@ do { \
  * region.
  */
 #define preempt_disable()			barrier()
+#define raw_preempt_disable()			barrier()
 #define sched_preempt_enable_no_resched()	barrier()
 #define preempt_enable_no_resched()		barrier()
+#define raw_preempt_enable_no_resched()		barrier()
 #define preempt_enable()			barrier()
 #define preempt_check_resched()			do { } while (0)
 
@@ -128,11 +147,13 @@ do { \
 /*
  * Modules have no business playing preemption tricks.
  */
+#ifndef CONFIG_PAX_KERNEXEC
 #undef sched_preempt_enable_no_resched
 #undef preempt_enable_no_resched
 #undef preempt_enable_no_resched_notrace
 #undef preempt_check_resched
 #endif
+#endif
 
 #define preempt_set_need_resched() \
 do { \
diff --git a/include/linux/printk.h b/include/linux/printk.h
index 319ff7e..608849a 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -121,6 +121,8 @@ static inline __printf(1, 2) __cold
 void early_printk(const char *s, ...) { }
 #endif
 
+extern int kptr_restrict;
+
 #ifdef CONFIG_PRINTK
 asmlinkage __printf(5, 0)
 int vprintk_emit(int facility, int level,
@@ -155,7 +157,6 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
 
 extern int printk_delay_msec;
 extern int dmesg_restrict;
-extern int kptr_restrict;
 
 extern void wake_up_klogd(void);
 
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 9d117f6..d832b31 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -17,8 +17,11 @@ extern void proc_flush_task(struct task_struct *);
 extern struct proc_dir_entry *proc_symlink(const char *,
 		struct proc_dir_entry *, const char *);
 extern struct proc_dir_entry *proc_mkdir(const char *, struct proc_dir_entry *);
+extern struct proc_dir_entry *proc_mkdir_restrict(const char *, struct proc_dir_entry *);
 extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
 					      struct proc_dir_entry *, void *);
+extern struct proc_dir_entry *proc_mkdir_data_restrict(const char *, umode_t,
+					      struct proc_dir_entry *, void *);
 extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,
 					      struct proc_dir_entry *);
  
@@ -34,6 +37,19 @@ static inline struct proc_dir_entry *proc_create(
 	return proc_create_data(name, mode, parent, proc_fops, NULL);
 }
 
+static inline struct proc_dir_entry *proc_create_grsec(const char *name, umode_t mode,
+	struct proc_dir_entry *parent, const struct file_operations *proc_fops)
+{
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	return proc_create_data(name, S_IRUSR, parent, proc_fops, NULL);
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	return proc_create_data(name, S_IRUSR | S_IRGRP, parent, proc_fops, NULL);
+#else
+	return proc_create_data(name, mode, parent, proc_fops, NULL);
+#endif
+}
+
+
 extern void proc_set_size(struct proc_dir_entry *, loff_t);
 extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
 extern void *PDE_DATA(const struct inode *);
@@ -56,8 +72,12 @@ static inline struct proc_dir_entry *proc_symlink(const char *name,
 		struct proc_dir_entry *parent,const char *dest) { return NULL;}
 static inline struct proc_dir_entry *proc_mkdir(const char *name,
 	struct proc_dir_entry *parent) {return NULL;}
+static inline struct proc_dir_entry *proc_mkdir_restrict(const char *name,
+	struct proc_dir_entry *parent) { return NULL; }
 static inline struct proc_dir_entry *proc_mkdir_data(const char *name,
 	umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
+static inline  struct proc_dir_entry *proc_mkdir_data_restrict(const char *name,
+	umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
 static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
 	umode_t mode, struct proc_dir_entry *parent) { return NULL; }
 #define proc_create(name, mode, parent, proc_fops) ({NULL;})
@@ -77,7 +97,7 @@ static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *p
 static inline struct proc_dir_entry *proc_net_mkdir(
 	struct net *net, const char *name, struct proc_dir_entry *parent)
 {
-	return proc_mkdir_data(name, 0, parent, net);
+	return proc_mkdir_data_restrict(name, 0, parent, net);
 }
 
 #endif /* _LINUX_PROC_FS_H */
diff --git a/include/linux/proc_ns.h b/include/linux/proc_ns.h
index 34a1e10..70f6bde 100644
--- a/include/linux/proc_ns.h
+++ b/include/linux/proc_ns.h
@@ -14,7 +14,7 @@ struct proc_ns_operations {
 	void (*put)(void *ns);
 	int (*install)(struct nsproxy *nsproxy, void *ns);
 	unsigned int (*inum)(void *ns);
-};
+} __do_const __randomize_layout;
 
 struct proc_ns {
 	void *ns;
diff --git a/include/linux/ptp_classify.h b/include/linux/ptp_classify.h
index 7dfed71..1dc420b 100644
--- a/include/linux/ptp_classify.h
+++ b/include/linux/ptp_classify.h
@@ -23,8 +23,15 @@
 #ifndef _PTP_CLASSIFY_H_
 #define _PTP_CLASSIFY_H_
 
+#include <linux/if_ether.h>
+#include <linux/if_vlan.h>
 #include <linux/ip.h>
-#include <linux/skbuff.h>
+#include <linux/filter.h>
+#ifdef __KERNEL__
+#include <linux/in.h>
+#else
+#include <netinet/in.h>
+#endif
 
 #define PTP_CLASS_NONE  0x00 /* not a PTP event message */
 #define PTP_CLASS_V1    0x01 /* protocol version 1 */
@@ -37,7 +44,7 @@
 #define PTP_CLASS_PMASK 0xf0 /* mask for the packet type field */
 
 #define PTP_CLASS_V1_IPV4 (PTP_CLASS_V1 | PTP_CLASS_IPV4)
-#define PTP_CLASS_V1_IPV6 (PTP_CLASS_V1 | PTP_CLASS_IPV6) /* probably DNE */
+#define PTP_CLASS_V1_IPV6 (PTP_CLASS_V1 | PTP_CLASS_IPV6) /*probably DNE*/
 #define PTP_CLASS_V2_IPV4 (PTP_CLASS_V2 | PTP_CLASS_IPV4)
 #define PTP_CLASS_V2_IPV6 (PTP_CLASS_V2 | PTP_CLASS_IPV6)
 #define PTP_CLASS_V2_L2   (PTP_CLASS_V2 | PTP_CLASS_L2)
@@ -46,34 +53,88 @@
 #define PTP_EV_PORT 319
 #define PTP_GEN_BIT 0x08 /* indicates general message, if set in message type */
 
+#define OFF_ETYPE	12
+#define OFF_IHL		14
+#define OFF_FRAG	20
+#define OFF_PROTO4	23
+#define OFF_NEXT	6
+#define OFF_UDP_DST	2
+
 #define OFF_PTP_SOURCE_UUID	22 /* PTPv1 only */
 #define OFF_PTP_SEQUENCE_ID	30
 #define OFF_PTP_CONTROL		32 /* PTPv1 only */
 
-/* Below defines should actually be removed at some point in time. */
+#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2)
+
 #define IP6_HLEN	40
 #define UDP_HLEN	8
-#define OFF_IHL		14
+
+#define RELOFF_DST4	(ETH_HLEN + OFF_UDP_DST)
+#define OFF_DST6	(ETH_HLEN + IP6_HLEN + OFF_UDP_DST)
 #define OFF_PTP6	(ETH_HLEN + IP6_HLEN + UDP_HLEN)
-#define IPV4_HLEN(data) (((struct iphdr *)(data + OFF_IHL))->ihl << 2)
 
-#if defined(CONFIG_NET_PTP_CLASSIFY)
-/**
- * ptp_classify_raw - classify a PTP packet
- * @skb: buffer
- *
- * Runs a minimal BPF dissector to classify a network packet to
- * determine the PTP class. In case the skb does not contain any
- * PTP protocol data, PTP_CLASS_NONE will be returned, otherwise
- * PTP_CLASS_V1_IPV{4,6}, PTP_CLASS_V2_IPV{4,6} or
- * PTP_CLASS_V2_{L2,VLAN}, depending on the packet content.
- */
-unsigned int ptp_classify_raw(const struct sk_buff *skb);
+#define OP_AND	(BPF_ALU | BPF_AND  | BPF_K)
+#define OP_JEQ	(BPF_JMP | BPF_JEQ  | BPF_K)
+#define OP_JSET	(BPF_JMP | BPF_JSET | BPF_K)
+#define OP_LDB	(BPF_LD  | BPF_B    | BPF_ABS)
+#define OP_LDH	(BPF_LD  | BPF_H    | BPF_ABS)
+#define OP_LDHI	(BPF_LD  | BPF_H    | BPF_IND)
+#define OP_LDX	(BPF_LDX | BPF_B    | BPF_MSH)
+#define OP_OR	(BPF_ALU | BPF_OR   | BPF_K)
+#define OP_RETA	(BPF_RET | BPF_A)
+#define OP_RETK	(BPF_RET | BPF_K)
 
-void __init ptp_classifier_init(void);
-#else
-static inline void ptp_classifier_init(void)
+static inline int ptp_filter_init(struct sock_filter *f, int len)
 {
+	if (OP_LDH == f[0].code)
+		return sk_chk_filter(f, len);
+	else
+		return 0;
 }
+
+#define PTP_FILTER \
+	{OP_LDH,	0,   0, OFF_ETYPE		}, /*              */ \
+	{OP_JEQ,	0,  12, ETH_P_IP		}, /* f goto L20   */ \
+	{OP_LDB,	0,   0, OFF_PROTO4		}, /*              */ \
+	{OP_JEQ,	0,   9, IPPROTO_UDP		}, /* f goto L10   */ \
+	{OP_LDH,	0,   0, OFF_FRAG		}, /*              */ \
+	{OP_JSET,	7,   0, 0x1fff			}, /* t goto L11   */ \
+	{OP_LDX,	0,   0, OFF_IHL			}, /*              */ \
+	{OP_LDHI,	0,   0, RELOFF_DST4		}, /*              */ \
+	{OP_JEQ,	0,   4, PTP_EV_PORT		}, /* f goto L12   */ \
+	{OP_LDHI,	0,   0, ETH_HLEN + UDP_HLEN	}, /*              */ \
+	{OP_AND,	0,   0, PTP_CLASS_VMASK		}, /*              */ \
+	{OP_OR,		0,   0, PTP_CLASS_IPV4		}, /*              */ \
+	{OP_RETA,	0,   0, 0			}, /*              */ \
+/*L1x*/	{OP_RETK,	0,   0, PTP_CLASS_NONE		}, /*              */ \
+/*L20*/	{OP_JEQ,	0,   9, ETH_P_IPV6		}, /* f goto L40   */ \
+	{OP_LDB,	0,   0, ETH_HLEN + OFF_NEXT	}, /*              */ \
+	{OP_JEQ,	0,   6, IPPROTO_UDP		}, /* f goto L30   */ \
+	{OP_LDH,	0,   0, OFF_DST6		}, /*              */ \
+	{OP_JEQ,	0,   4, PTP_EV_PORT		}, /* f goto L31   */ \
+	{OP_LDH,	0,   0, OFF_PTP6		}, /*              */ \
+	{OP_AND,	0,   0, PTP_CLASS_VMASK		}, /*              */ \
+	{OP_OR,		0,   0, PTP_CLASS_IPV6		}, /*              */ \
+	{OP_RETA,	0,   0, 0			}, /*              */ \
+/*L3x*/	{OP_RETK,	0,   0, PTP_CLASS_NONE		}, /*              */ \
+/*L40*/	{OP_JEQ,	0,   9, ETH_P_8021Q		}, /* f goto L50   */ \
+	{OP_LDH,	0,   0, OFF_ETYPE + 4		}, /*              */ \
+	{OP_JEQ,	0,  15, ETH_P_1588		}, /* f goto L60   */ \
+	{OP_LDB,	0,   0, ETH_HLEN + VLAN_HLEN	}, /*              */ \
+	{OP_AND,	0,   0, PTP_GEN_BIT		}, /*              */ \
+	{OP_JEQ,	0,  12, 0			}, /* f goto L6x   */ \
+	{OP_LDH,	0,   0, ETH_HLEN + VLAN_HLEN	}, /*              */ \
+	{OP_AND,	0,   0, PTP_CLASS_VMASK		}, /*              */ \
+	{OP_OR,		0,   0, PTP_CLASS_VLAN		}, /*              */ \
+	{OP_RETA,	0,   0, 0			}, /*              */ \
+/*L50*/	{OP_JEQ,	0,   7, ETH_P_1588		}, /* f goto L61   */ \
+	{OP_LDB,	0,   0, ETH_HLEN		}, /*              */ \
+	{OP_AND,	0,   0, PTP_GEN_BIT		}, /*              */ \
+	{OP_JEQ,	0,   4, 0			}, /* f goto L6x   */ \
+	{OP_LDH,	0,   0, ETH_HLEN		}, /*              */ \
+	{OP_AND,	0,   0, PTP_CLASS_VMASK		}, /*              */ \
+	{OP_OR,		0,   0, PTP_CLASS_L2		}, /*              */ \
+	{OP_RETA,	0,   0, 0			}, /*              */ \
+/*L6x*/	{OP_RETK,	0,   0, PTP_CLASS_NONE		},
+
 #endif
-#endif /* _PTP_CLASSIFY_H_ */
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 0f3c5d3..bc559e3 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -70,7 +70,7 @@ struct kqid {			/* Type in which we store the quota identifier */
 
 extern bool qid_eq(struct kqid left, struct kqid right);
 extern bool qid_lt(struct kqid left, struct kqid right);
-extern qid_t from_kqid(struct user_namespace *to, struct kqid qid);
+extern qid_t from_kqid(struct user_namespace *to, struct kqid qid) __intentional_overflow(-1);
 extern qid_t from_kqid_munged(struct user_namespace *to, struct kqid qid);
 extern bool qid_valid(struct kqid qid);
 
diff --git a/include/linux/random.h b/include/linux/random.h
index 57fbbff..2170304 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -9,9 +9,19 @@
 #include <uapi/linux/random.h>
 
 extern void add_device_randomness(const void *, unsigned int);
+
+static inline void add_latent_entropy(void)
+{
+
+#ifdef LATENT_ENTROPY_PLUGIN
+	add_device_randomness((const void *)&latent_entropy, sizeof(latent_entropy));
+#endif
+
+}
+
 extern void add_input_randomness(unsigned int type, unsigned int code,
-				 unsigned int value);
-extern void add_interrupt_randomness(int irq, int irq_flags);
+				 unsigned int value) __latent_entropy;
+extern void add_interrupt_randomness(int irq, int irq_flags) __latent_entropy;
 
 extern void get_random_bytes(void *buf, int nbytes);
 extern void get_random_bytes_arch(void *buf, int nbytes);
@@ -22,10 +32,10 @@ extern int random_int_secret_init(void);
 extern const struct file_operations random_fops, urandom_fops;
 #endif
 
-unsigned int get_random_int(void);
+unsigned int __intentional_overflow(-1) get_random_int(void);
 unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
 
-u32 prandom_u32(void);
+u32 prandom_u32(void) __intentional_overflow(-1);
 void prandom_bytes(void *buf, int nbytes);
 void prandom_seed(u32 seed);
 void prandom_reseed_late(void);
@@ -37,6 +47,11 @@ struct rnd_state {
 u32 prandom_u32_state(struct rnd_state *state);
 void prandom_bytes_state(struct rnd_state *state, void *buf, int nbytes);
 
+static inline unsigned long __intentional_overflow(-1) pax_get_random_long(void)
+{
+	return prandom_u32() + (sizeof(long) > 4 ? (unsigned long)prandom_u32() << 32 : 0);
+}
+
 /**
  * prandom_u32_max - returns a pseudo-random number in interval [0, ep_ro)
  * @ep_ro: right open interval endpoint
@@ -49,7 +64,7 @@ void prandom_bytes_state(struct rnd_state *state, void *buf, int nbytes);
  *
  * Returns: pseudo-random number in interval [0, ep_ro)
  */
-static inline u32 prandom_u32_max(u32 ep_ro)
+static inline u32 __intentional_overflow(-1) prandom_u32_max(u32 ep_ro)
 {
 	return (u32)(((u64) prandom_u32() * ep_ro) >> 32);
 }
diff --git a/include/linux/rbtree_augmented.h b/include/linux/rbtree_augmented.h
index fea49b5..2ac22bb 100644
--- a/include/linux/rbtree_augmented.h
+++ b/include/linux/rbtree_augmented.h
@@ -80,7 +80,9 @@ rbname ## _rotate(struct rb_node *rb_old, struct rb_node *rb_new)	\
 	old->rbaugmented = rbcompute(old);				\
 }									\
 rbstatic const struct rb_augment_callbacks rbname = {			\
-	rbname ## _propagate, rbname ## _copy, rbname ## _rotate	\
+	.propagate = rbname ## _propagate,				\
+	.copy = rbname ## _copy,					\
+	.rotate = rbname ## _rotate					\
 };
 
 
diff --git a/include/linux/rculist.h b/include/linux/rculist.h
index 8183b46..a388711 100644
--- a/include/linux/rculist.h
+++ b/include/linux/rculist.h
@@ -29,8 +29,8 @@
  */
 static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
 {
-	ACCESS_ONCE(list->next) = list;
-	ACCESS_ONCE(list->prev) = list;
+	ACCESS_ONCE_RW(list->next) = list;
+	ACCESS_ONCE_RW(list->prev) = list;
 }
 
 /*
@@ -59,6 +59,9 @@ void __list_add_rcu(struct list_head *new,
 		    struct list_head *prev, struct list_head *next);
 #endif
 
+void __pax_list_add_rcu(struct list_head *new,
+			struct list_head *prev, struct list_head *next);
+
 /**
  * list_add_rcu - add a new entry to rcu-protected list
  * @new: new entry to be added
@@ -80,6 +83,11 @@ static inline void list_add_rcu(struct list_head *new, struct list_head *head)
 	__list_add_rcu(new, head, head->next);
 }
 
+static inline void pax_list_add_rcu(struct list_head *new, struct list_head *head)
+{
+	__pax_list_add_rcu(new, head, head->next);
+}
+
 /**
  * list_add_tail_rcu - add a new entry to rcu-protected list
  * @new: new entry to be added
@@ -102,6 +110,12 @@ static inline void list_add_tail_rcu(struct list_head *new,
 	__list_add_rcu(new, head->prev, head);
 }
 
+static inline void pax_list_add_tail_rcu(struct list_head *new,
+					struct list_head *head)
+{
+	__pax_list_add_rcu(new, head->prev, head);
+}
+
 /**
  * list_del_rcu - deletes entry from list without re-initialization
  * @entry: the element to delete from the list.
@@ -132,6 +146,8 @@ static inline void list_del_rcu(struct list_head *entry)
 	entry->prev = LIST_POISON2;
 }
 
+extern void pax_list_del_rcu(struct list_head *entry);
+
 /**
  * hlist_del_init_rcu - deletes entry from hash list with re-initialization
  * @n: the element to delete from the hash list.
diff --git a/include/linux/reboot.h b/include/linux/reboot.h
index 48bf152..d38b785 100644
--- a/include/linux/reboot.h
+++ b/include/linux/reboot.h
@@ -44,9 +44,9 @@ extern int unregister_reboot_notifier(struct notifier_block *);
  */
 
 extern void migrate_to_reboot_cpu(void);
-extern void machine_restart(char *cmd);
-extern void machine_halt(void);
-extern void machine_power_off(void);
+extern void machine_restart(char *cmd) __noreturn;
+extern void machine_halt(void) __noreturn;
+extern void machine_power_off(void) __noreturn;
 
 extern void machine_shutdown(void);
 struct pt_regs;
@@ -57,9 +57,9 @@ extern void machine_crash_shutdown(struct pt_regs *);
  */
 
 extern void kernel_restart_prepare(char *cmd);
-extern void kernel_restart(char *cmd);
-extern void kernel_halt(void);
-extern void kernel_power_off(void);
+extern void kernel_restart(char *cmd) __noreturn;
+extern void kernel_halt(void) __noreturn;
+extern void kernel_power_off(void) __noreturn;
 
 extern int C_A_D; /* for sysctl */
 void ctrl_alt_del(void);
@@ -73,7 +73,7 @@ extern int orderly_poweroff(bool force);
  * Emergency restart, callable from an interrupt handler.
  */
 
-extern void emergency_restart(void);
+extern void emergency_restart(void) __noreturn;
 #include <asm/emergency-restart.h>
 
 #endif /* _LINUX_REBOOT_H */
diff --git a/include/linux/regset.h b/include/linux/regset.h
index 8e0c9fe..ac4d221 100644
--- a/include/linux/regset.h
+++ b/include/linux/regset.h
@@ -161,7 +161,8 @@ struct user_regset {
 	unsigned int 			align;
 	unsigned int 			bias;
 	unsigned int 			core_note_type;
-};
+} __do_const;
+typedef struct user_regset __no_const user_regset_no_const;
 
 /**
  * struct user_regset_view - available regsets
diff --git a/include/linux/relay.h b/include/linux/relay.h
index d7c8359..818daf5 100644
--- a/include/linux/relay.h
+++ b/include/linux/relay.h
@@ -157,7 +157,7 @@ struct rchan_callbacks
 	 * The callback should return 0 if successful, negative if not.
 	 */
 	int (*remove_buf_file)(struct dentry *dentry);
-};
+} __no_const;
 
 /*
  * CONFIG_RELAY kernel API, kernel/relay.c
diff --git a/include/linux/rio.h b/include/linux/rio.h
index 6bda06f..bf39a9b 100644
--- a/include/linux/rio.h
+++ b/include/linux/rio.h
@@ -358,7 +358,7 @@ struct rio_ops {
 	int (*map_inb)(struct rio_mport *mport, dma_addr_t lstart,
 			u64 rstart, u32 size, u32 flags);
 	void (*unmap_inb)(struct rio_mport *mport, dma_addr_t lstart);
-};
+} __no_const;
 
 #define RIO_RESOURCE_MEM	0x00000100
 #define RIO_RESOURCE_DOORBELL	0x00000200
diff --git a/include/linux/rmap.h b/include/linux/rmap.h
index be57450..31cf65e 100644
--- a/include/linux/rmap.h
+++ b/include/linux/rmap.h
@@ -144,8 +144,8 @@ static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)
 void anon_vma_init(void);	/* create anon_vma_cachep */
 int  anon_vma_prepare(struct vm_area_struct *);
 void unlink_anon_vmas(struct vm_area_struct *);
-int anon_vma_clone(struct vm_area_struct *, struct vm_area_struct *);
-int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *);
+int anon_vma_clone(struct vm_area_struct *, const struct vm_area_struct *);
+int anon_vma_fork(struct vm_area_struct *, const struct vm_area_struct *);
 
 static inline void anon_vma_merge(struct vm_area_struct *vma,
 				  struct vm_area_struct *next)
diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
index a964f72..b475afb 100644
--- a/include/linux/scatterlist.h
+++ b/include/linux/scatterlist.h
@@ -1,6 +1,7 @@
 #ifndef _LINUX_SCATTERLIST_H
 #define _LINUX_SCATTERLIST_H
 
+#include <linux/sched.h>
 #include <linux/string.h>
 #include <linux/bug.h>
 #include <linux/mm.h>
@@ -114,6 +115,12 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
 #ifdef CONFIG_DEBUG_SG
 	BUG_ON(!virt_addr_valid(buf));
 #endif
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+	if (object_starts_on_stack(buf)) {
+		void *adjbuf = buf - current->stack + current->lowmem_stack;
+		sg_set_page(sg, virt_to_page(adjbuf), buflen, offset_in_page(adjbuf));
+	} else
+#endif
 	sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
 }
 
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0376b05..82054c2 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -131,6 +131,7 @@ struct fs_struct;
 struct perf_event_context;
 struct blk_plug;
 struct filename;
+struct linux_binprm;
 
 #define VMACACHE_BITS 2
 #define VMACACHE_SIZE (1U << VMACACHE_BITS)
@@ -374,7 +375,7 @@ extern char __sched_text_start[], __sched_text_end[];
 extern int in_sched_functions(unsigned long addr);
 
 #define	MAX_SCHEDULE_TIMEOUT	LONG_MAX
-extern signed long schedule_timeout(signed long timeout);
+extern signed long schedule_timeout(signed long timeout) __intentional_overflow(-1);
 extern signed long schedule_timeout_interruptible(signed long timeout);
 extern signed long schedule_timeout_killable(signed long timeout);
 extern signed long schedule_timeout_uninterruptible(signed long timeout);
@@ -385,6 +386,19 @@ struct nsproxy;
 struct user_namespace;
 
 #ifdef CONFIG_MMU
+
+#ifdef CONFIG_GRKERNSEC_RAND_THREADSTACK
+extern unsigned long gr_rand_threadstack_offset(const struct mm_struct *mm, const struct file *filp, unsigned long flags);
+#else
+static inline unsigned long gr_rand_threadstack_offset(const struct mm_struct *mm, const struct file *filp, unsigned long flags)
+{
+	return 0;
+}
+#endif
+
+extern bool check_heap_stack_gap(const struct vm_area_struct *vma, unsigned long addr, unsigned long len, unsigned long offset);
+extern unsigned long skip_heap_stack_gap(const struct vm_area_struct *vma, unsigned long len, unsigned long offset);
+
 extern void arch_pick_mmap_layout(struct mm_struct *mm);
 extern unsigned long
 arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
@@ -682,6 +696,17 @@ struct signal_struct {
 #ifdef CONFIG_TASKSTATS
 	struct taskstats *stats;
 #endif
+
+#ifdef CONFIG_GRKERNSEC
+	u32 curr_ip;
+	u32 saved_ip;
+	u32 gr_saddr;
+	u32 gr_daddr;
+	u16 gr_sport;
+	u16 gr_dport;
+	u8 used_accept:1;
+#endif
+
 #ifdef CONFIG_AUDIT
 	unsigned audit_tty;
 	unsigned audit_tty_log_passwd;
@@ -708,7 +733,7 @@ struct signal_struct {
 	struct mutex cred_guard_mutex;	/* guard against foreign influences on
 					 * credential calculations
 					 * (notably. ptrace) */
-};
+} __randomize_layout;
 
 /*
  * Bits in flags field of signal_struct.
@@ -761,6 +786,14 @@ struct user_struct {
 	struct key *session_keyring;	/* UID's default session keyring */
 #endif
 
+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
+	unsigned char kernel_banned;
+#endif
+#ifdef CONFIG_GRKERNSEC_BRUTE
+	unsigned char suid_banned;
+	unsigned long suid_ban_expires;
+#endif
+
 	/* Hash table maintenance information */
 	struct hlist_node uidhash_node;
 	kuid_t uid;
@@ -768,7 +801,7 @@ struct user_struct {
 #ifdef CONFIG_PERF_EVENTS
 	atomic_long_t locked_vm;
 #endif
-};
+} __randomize_layout;
 
 extern int uids_sysfs_init(void);
 
@@ -1224,6 +1257,9 @@ enum perf_event_task_context {
 struct task_struct {
 	volatile long state;	/* -1 unrunnable, 0 runnable, >0 stopped */
 	void *stack;
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+	void *lowmem_stack;
+#endif
 	atomic_t usage;
 	unsigned int flags;	/* per process flags, defined below */
 	unsigned int ptrace;
@@ -1349,8 +1385,8 @@ struct task_struct {
 	struct list_head thread_node;
 
 	struct completion *vfork_done;		/* for vfork() */
-	int __user *set_child_tid;		/* CLONE_CHILD_SETTID */
-	int __user *clear_child_tid;		/* CLONE_CHILD_CLEARTID */
+	pid_t __user *set_child_tid;		/* CLONE_CHILD_SETTID */
+	pid_t __user *clear_child_tid;		/* CLONE_CHILD_CLEARTID */
 
 	cputime_t utime, stime, utimescaled, stimescaled;
 	cputime_t gtime;
@@ -1375,11 +1411,6 @@ struct task_struct {
 	struct task_cputime cputime_expires;
 	struct list_head cpu_timers[3];
 
-/* process credentials */
-	const struct cred __rcu *real_cred; /* objective and real subjective task
-					 * credentials (COW) */
-	const struct cred __rcu *cred;	/* effective (overridable) subjective task
-					 * credentials (COW) */
 	char comm[TASK_COMM_LEN]; /* executable name excluding path
 				     - access with [gs]et_task_comm (which lock
 				       it with task_lock())
@@ -1396,6 +1427,10 @@ struct task_struct {
 #endif
 /* CPU-specific state of this task */
 	struct thread_struct thread;
+/* thread_info moved to task_struct */
+#ifdef CONFIG_X86
+	struct thread_info tinfo;
+#endif
 /* filesystem information */
 	struct fs_struct *fs;
 /* open file information */
@@ -1472,6 +1507,10 @@ struct task_struct {
 	gfp_t lockdep_reclaim_gfp;
 #endif
 
+/* process credentials */
+	const struct cred __rcu *real_cred; /* objective and real subjective task
+					 * credentials (COW) */
+
 /* journalling filesystem info */
 	void *journal_info;
 
@@ -1510,6 +1549,10 @@ struct task_struct {
 	/* cg_list protected by css_set_lock and tsk->alloc_lock */
 	struct list_head cg_list;
 #endif
+
+	const struct cred __rcu *cred;	/* effective (overridable) subjective task
+					 * credentials (COW) */
+
 #ifdef CONFIG_FUTEX
 	struct robust_list_head __user *robust_list;
 #ifdef CONFIG_COMPAT
@@ -1655,7 +1698,78 @@ struct task_struct {
 	unsigned int	sequential_io;
 	unsigned int	sequential_io_avg;
 #endif
-};
+
+#ifdef CONFIG_GRKERNSEC
+	/* grsecurity */
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	u64 exec_id;
+#endif
+#ifdef CONFIG_GRKERNSEC_SETXID
+	const struct cred *delayed_cred;
+#endif
+	struct dentry *gr_chroot_dentry;
+	struct acl_subject_label *acl;
+	struct acl_subject_label *tmpacl;
+	struct acl_role_label *role;
+	struct file *exec_file;
+	unsigned long brute_expires;
+	u16 acl_role_id;
+	u8 inherited;
+	/* is this the task that authenticated to the special role */
+	u8 acl_sp_role;
+	u8 is_writable;
+	u8 brute;
+	u8 gr_is_chrooted;
+#endif
+
+} __randomize_layout;
+
+#define MF_PAX_PAGEEXEC		0x01000000	/* Paging based non-executable pages */
+#define MF_PAX_EMUTRAMP		0x02000000	/* Emulate trampolines */
+#define MF_PAX_MPROTECT		0x04000000	/* Restrict mprotect() */
+#define MF_PAX_RANDMMAP		0x08000000	/* Randomize mmap() base */
+/*#define MF_PAX_RANDEXEC		0x10000000*/	/* Randomize ET_EXEC base */
+#define MF_PAX_SEGMEXEC		0x20000000	/* Segmentation based non-executable pages */
+
+#ifdef CONFIG_PAX_SOFTMODE
+extern int pax_softmode;
+#endif
+
+extern int pax_check_flags(unsigned long *);
+#define PAX_PARSE_FLAGS_FALLBACK	(~0UL)
+
+/* if tsk != current then task_lock must be held on it */
+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
+static inline unsigned long pax_get_flags(struct task_struct *tsk)
+{
+	if (likely(tsk->mm))
+		return tsk->mm->pax_flags;
+	else
+		return 0UL;
+}
+
+/* if tsk != current then task_lock must be held on it */
+static inline long pax_set_flags(struct task_struct *tsk, unsigned long flags)
+{
+	if (likely(tsk->mm)) {
+		tsk->mm->pax_flags = flags;
+		return 0;
+	}
+	return -EINVAL;
+}
+#endif
+
+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
+extern void pax_set_initial_flags(struct linux_binprm *bprm);
+#elif defined(CONFIG_PAX_HOOK_ACL_FLAGS)
+extern void (*pax_set_initial_flags_func)(struct linux_binprm *bprm);
+#endif
+
+struct path;
+extern char *pax_get_path(const struct path *path, char *buf, int buflen);
+extern void pax_report_fault(struct pt_regs *regs, void *pc, void *sp);
+extern void pax_report_insns(struct pt_regs *regs, void *pc, void *sp);
+extern void pax_report_refcount_overflow(struct pt_regs *regs);
 
 /* Future-safe accessor for struct task_struct's cpus_allowed. */
 #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
@@ -1737,7 +1851,7 @@ struct pid_namespace;
 pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
 			struct pid_namespace *ns);
 
-static inline pid_t task_pid_nr(struct task_struct *tsk)
+static inline pid_t task_pid_nr(const struct task_struct *tsk)
 {
 	return tsk->pid;
 }
@@ -2084,6 +2198,25 @@ extern u64 sched_clock_cpu(int cpu);
 
 extern void sched_clock_init(void);
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+static inline void populate_stack(void)
+{
+	struct task_struct *curtask = current;
+	int c;
+	int *ptr = curtask->stack;
+	int *end = curtask->stack + THREAD_SIZE;
+
+	while (ptr < end) {
+		c = *(volatile int *)ptr;
+		ptr += PAGE_SIZE/sizeof(int);
+	}
+}
+#else
+static inline void populate_stack(void)
+{
+}
+#endif
+
 #ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
 static inline void sched_clock_tick(void)
 {
@@ -2217,7 +2350,9 @@ void yield(void);
 extern struct exec_domain	default_exec_domain;
 
 union thread_union {
+#ifndef CONFIG_X86
 	struct thread_info thread_info;
+#endif
 	unsigned long stack[THREAD_SIZE/sizeof(long)];
 };
 
@@ -2250,6 +2385,7 @@ extern struct pid_namespace init_pid_ns;
  */
 
 extern struct task_struct *find_task_by_vpid(pid_t nr);
+extern struct task_struct *find_task_by_vpid_unrestricted(pid_t nr);
 extern struct task_struct *find_task_by_pid_ns(pid_t nr,
 		struct pid_namespace *ns);
 
@@ -2412,7 +2548,7 @@ extern void __cleanup_sighand(struct sighand_struct *);
 extern void exit_itimers(struct signal_struct *);
 extern void flush_itimer_signals(void);
 
-extern void do_group_exit(int);
+extern __noreturn void do_group_exit(int);
 
 extern int do_execve(struct filename *,
 		     const char __user * const __user *,
@@ -2614,9 +2750,9 @@ static inline unsigned long *end_of_stack(struct task_struct *p)
 
 #endif
 
-static inline int object_is_on_stack(void *obj)
+static inline int object_starts_on_stack(const void *obj)
 {
-	void *stack = task_stack_page(current);
+	const void *stack = task_stack_page(current);
 
 	return (obj >= stack) && (obj < (stack + THREAD_SIZE));
 }
diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
index 596a0e0..bea77ec 100644
--- a/include/linux/sched/sysctl.h
+++ b/include/linux/sched/sysctl.h
@@ -34,6 +34,7 @@ enum { sysctl_hung_task_timeout_secs = 0 };
 #define DEFAULT_MAX_MAP_COUNT	(USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
 
 extern int sysctl_max_map_count;
+extern unsigned long sysctl_heap_stack_gap;
 
 extern unsigned int sysctl_sched_latency;
 extern unsigned int sysctl_sched_min_granularity;
diff --git a/include/linux/seccomp.h b/include/linux/seccomp.h
index 4054b09..6f19cfd 100644
--- a/include/linux/seccomp.h
+++ b/include/linux/seccomp.h
@@ -76,6 +76,7 @@ static inline int seccomp_mode(struct seccomp *s)
 #ifdef CONFIG_SECCOMP_FILTER
 extern void put_seccomp_filter(struct task_struct *tsk);
 extern void get_seccomp_filter(struct task_struct *tsk);
+extern u32 seccomp_bpf_load(int off);
 #else  /* CONFIG_SECCOMP_FILTER */
 static inline void put_seccomp_filter(struct task_struct *tsk)
 {
diff --git a/include/linux/security.h b/include/linux/security.h
index 9c6b972..7e7c704 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -27,6 +27,7 @@
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/string.h>
+#include <linux/grsecurity.h>
 
 struct linux_binprm;
 struct cred;
@@ -116,8 +117,6 @@ struct seq_file;
 
 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
 
-void reset_security_ops(void);
-
 #ifdef CONFIG_MMU
 extern unsigned long mmap_min_addr;
 extern unsigned long dac_mmap_min_addr;
@@ -1719,7 +1718,7 @@ struct security_operations {
 				 struct audit_context *actx);
 	void (*audit_rule_free) (void *lsmrule);
 #endif /* CONFIG_AUDIT */
-};
+} __randomize_layout;
 
 /* prototypes */
 extern int security_init(void);
diff --git a/include/linux/semaphore.h b/include/linux/semaphore.h
index dc368b8..e895209 100644
--- a/include/linux/semaphore.h
+++ b/include/linux/semaphore.h
@@ -37,7 +37,7 @@ static inline void sema_init(struct semaphore *sem, int val)
 }
 
 extern void down(struct semaphore *sem);
-extern int __must_check down_interruptible(struct semaphore *sem);
+extern int __must_check down_interruptible(struct semaphore *sem) __intentional_overflow(-1);
 extern int __must_check down_killable(struct semaphore *sem);
 extern int __must_check down_trylock(struct semaphore *sem);
 extern int __must_check down_timeout(struct semaphore *sem, long jiffies);
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 52e0097..383f21d 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -27,6 +27,9 @@ struct seq_file {
 	struct mutex lock;
 	const struct seq_operations *op;
 	int poll_event;
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	u64 exec_id;
+#endif
 #ifdef CONFIG_USER_NS
 	struct user_namespace *user_ns;
 #endif
@@ -39,6 +42,7 @@ struct seq_operations {
 	void * (*next) (struct seq_file *m, void *v, loff_t *pos);
 	int (*show) (struct seq_file *m, void *v);
 };
+typedef struct seq_operations __no_const seq_operations_no_const;
 
 #define SEQ_SKIP 1
 
@@ -96,6 +100,7 @@ void seq_pad(struct seq_file *m, char c);
 
 char *mangle_path(char *s, const char *p, const char *esc);
 int seq_open(struct file *, const struct seq_operations *);
+int seq_open_restrict(struct file *, const struct seq_operations *);
 ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
 loff_t seq_lseek(struct file *, loff_t, int);
 int seq_release(struct inode *, struct file *);
@@ -138,6 +143,7 @@ static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
 }
 
 int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
+int single_open_restrict(struct file *, int (*)(struct seq_file *, void *), void *);
 int single_open_size(struct file *, int (*)(struct seq_file *, void *), void *, size_t);
 int single_release(struct inode *, struct file *);
 void *__seq_open_private(struct file *, const struct seq_operations *, int);
diff --git a/include/linux/shm.h b/include/linux/shm.h
index 57d7770..0936af6 100644
--- a/include/linux/shm.h
+++ b/include/linux/shm.h
@@ -20,6 +20,10 @@ struct shmid_kernel /* private to the kernel */
 
 	/* The task created the shm object.  NULL if the task is dead. */
 	struct task_struct	*shm_creator;
+#ifdef CONFIG_GRKERNSEC
+	time_t			shm_createtime;
+	pid_t			shm_lapid;
+#endif
 };
 
 /* shm_mode upper byte flags */
diff --git a/include/linux/signal.h b/include/linux/signal.h
index c9e6536..923b302 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -293,7 +293,7 @@ static inline void allow_signal(int sig)
 	 * know it'll be handled, so that they don't get converted to
 	 * SIGKILL or just silently dropped.
 	 */
-	kernel_sigaction(sig, (__force __sighandler_t)2);
+	kernel_sigaction(sig, (__force_user __sighandler_t)2);
 }
 
 static inline void disallow_signal(int sig)
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ec89301..4fd29a6 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -725,7 +725,7 @@ bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,
 struct sk_buff *__alloc_skb(unsigned int size, gfp_t priority, int flags,
 			    int node);
 struct sk_buff *build_skb(void *data, unsigned int frag_size);
-static inline struct sk_buff *alloc_skb(unsigned int size,
+static inline struct sk_buff * __intentional_overflow(0) alloc_skb(unsigned int size,
 					gfp_t priority)
 {
 	return __alloc_skb(size, priority, 0, NUMA_NO_NODE);
@@ -1839,7 +1839,7 @@ static inline u32 skb_inner_network_header_len(const struct sk_buff *skb)
 	return skb->inner_transport_header - skb->inner_network_header;
 }
 
-static inline int skb_network_offset(const struct sk_buff *skb)
+static inline int __intentional_overflow(0) skb_network_offset(const struct sk_buff *skb)
 {
 	return skb_network_header(skb) - skb->data;
 }
@@ -1911,7 +1911,7 @@ static inline void skb_pop_rcv_encapsulation(struct sk_buff *skb)
  * NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8)
  */
 #ifndef NET_SKB_PAD
-#define NET_SKB_PAD	max(32, L1_CACHE_BYTES)
+#define NET_SKB_PAD	max(_AC(32,UL), L1_CACHE_BYTES)
 #endif
 
 int ___pskb_trim(struct sk_buff *skb, unsigned int len);
@@ -2518,7 +2518,7 @@ struct sk_buff *skb_recv_datagram(struct sock *sk, unsigned flags, int noblock,
 				  int *err);
 unsigned int datagram_poll(struct file *file, struct socket *sock,
 			   struct poll_table_struct *wait);
-int skb_copy_datagram_iovec(const struct sk_buff *from, int offset,
+int __intentional_overflow(0) skb_copy_datagram_iovec(const struct sk_buff *from, int offset,
 			    struct iovec *to, int size);
 int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb, int hlen,
 				     struct iovec *iov);
@@ -2664,6 +2664,8 @@ static inline ktime_t net_invalid_timestamp(void)
 	return ktime_set(0, 0);
 }
 
+void skb_timestamping_init(void);
+
 #ifdef CONFIG_NETWORK_PHY_TIMESTAMPING
 
 void skb_clone_tx_timestamp(struct sk_buff *skb);
@@ -2907,6 +2909,9 @@ static inline void nf_reset(struct sk_buff *skb)
 	nf_bridge_put(skb->nf_bridge);
 	skb->nf_bridge = NULL;
 #endif
+#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
+	skb->nf_trace = 0;
+#endif
 }
 
 static inline void nf_reset_trace(struct sk_buff *skb)
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 1d9abb7..b1e8b10 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -14,15 +14,29 @@
 #include <linux/gfp.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
-
+#include <linux/err.h>
 
 /*
  * Flags to pass to kmem_cache_create().
  * The ones marked DEBUG are only valid if CONFIG_SLAB_DEBUG is set.
  */
 #define SLAB_DEBUG_FREE		0x00000100UL	/* DEBUG: Perform (expensive) checks on free */
+
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+#define SLAB_USERCOPY		0x00000200UL	/* PaX: Allow copying objs to/from userland */
+#else
+#define SLAB_USERCOPY		0x00000000UL
+#endif
+
 #define SLAB_RED_ZONE		0x00000400UL	/* DEBUG: Red zone objs in a cache */
 #define SLAB_POISON		0x00000800UL	/* DEBUG: Poison objects */
+
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+#define SLAB_NO_SANITIZE	0x00001000UL	/* PaX: Do not sanitize objs on free */
+#else
+#define SLAB_NO_SANITIZE	0x00000000UL
+#endif
+
 #define SLAB_HWCACHE_ALIGN	0x00002000UL	/* Align objs on cache lines */
 #define SLAB_CACHE_DMA		0x00004000UL	/* Use GFP_DMA memory */
 #define SLAB_STORE_USER		0x00010000UL	/* DEBUG: Store the last owner for bug hunting */
@@ -98,10 +112,13 @@
  * ZERO_SIZE_PTR can be passed to kfree though in the same way that NULL can.
  * Both make kfree a no-op.
  */
-#define ZERO_SIZE_PTR ((void *)16)
+#define ZERO_SIZE_PTR				\
+({						\
+	BUILD_BUG_ON(!(MAX_ERRNO & ~PAGE_MASK));\
+	(void *)(-MAX_ERRNO-1L);		\
+})
 
-#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \
-				(unsigned long)ZERO_SIZE_PTR)
+#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) - 1 >= (unsigned long)ZERO_SIZE_PTR - 1)
 
 #include <linux/kmemleak.h>
 
@@ -144,6 +161,8 @@ void * __must_check krealloc(const void *, size_t, gfp_t);
 void kfree(const void *);
 void kzfree(const void *);
 size_t ksize(const void *);
+const char *check_heap_object(const void *ptr, unsigned long n);
+bool is_usercopy_object(const void *ptr);
 
 /*
  * Some archs want to perform DMA into kmalloc caches and need a guaranteed
@@ -176,7 +195,7 @@ struct kmem_cache {
 	unsigned int align;	/* Alignment as calculated */
 	unsigned long flags;	/* Active flags on the slab */
 	const char *name;	/* Slab name for sysfs */
-	int refcount;		/* Use counter */
+	atomic_t refcount;	/* Use counter */
 	void (*ctor)(void *);	/* Called on object slot creation */
 	struct list_head list;	/* List of all slab caches on the system */
 };
@@ -261,6 +280,10 @@ extern struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
 extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
 #endif
 
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+extern struct kmem_cache *kmalloc_usercopy_caches[KMALLOC_SHIFT_HIGH + 1];
+#endif
+
 /*
  * Figure out which kmalloc slab an allocation of a certain size
  * belongs to.
@@ -269,7 +292,7 @@ extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
  * 2 = 120 .. 192 bytes
  * n = 2^(n-1) .. 2^n -1
  */
-static __always_inline int kmalloc_index(size_t size)
+static __always_inline __size_overflow(1) int kmalloc_index(size_t size)
 {
 	if (!size)
 		return 0;
@@ -312,11 +335,11 @@ static __always_inline int kmalloc_index(size_t size)
 }
 #endif /* !CONFIG_SLOB */
 
-void *__kmalloc(size_t size, gfp_t flags);
+void *__kmalloc(size_t size, gfp_t flags) __alloc_size(1);
 void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags);
 
 #ifdef CONFIG_NUMA
-void *__kmalloc_node(size_t size, gfp_t flags, int node);
+void *__kmalloc_node(size_t size, gfp_t flags, int node) __alloc_size(1);
 void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
 #else
 static __always_inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
index 8235dfb..47ce586 100644
--- a/include/linux/slab_def.h
+++ b/include/linux/slab_def.h
@@ -38,7 +38,7 @@ struct kmem_cache {
 /* 4) cache creation/removal */
 	const char *name;
 	struct list_head list;
-	int refcount;
+	atomic_t refcount;
 	int object_size;
 	int align;
 
@@ -54,10 +54,14 @@ struct kmem_cache {
 	unsigned long node_allocs;
 	unsigned long node_frees;
 	unsigned long node_overflow;
-	atomic_t allochit;
-	atomic_t allocmiss;
-	atomic_t freehit;
-	atomic_t freemiss;
+	atomic_unchecked_t allochit;
+	atomic_unchecked_t allocmiss;
+	atomic_unchecked_t freehit;
+	atomic_unchecked_t freemiss;
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	atomic_unchecked_t sanitized;
+	atomic_unchecked_t not_sanitized;
+#endif
 
 	/*
 	 * If debugging is enabled, then the allocator can add additional
diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index d82abd4..408c3a0 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -74,7 +74,7 @@ struct kmem_cache {
 	struct kmem_cache_order_objects max;
 	struct kmem_cache_order_objects min;
 	gfp_t allocflags;	/* gfp flags to use on each alloc */
-	int refcount;		/* Refcount for slab cache destroy */
+	atomic_t refcount;	/* Refcount for slab cache destroy */
 	void (*ctor)(void *);
 	int inuse;		/* Offset to metadata */
 	int align;		/* Alignment */
diff --git a/include/linux/smp.h b/include/linux/smp.h
index 34347f2..8739978 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -174,7 +174,9 @@ static inline void kick_all_cpus_sync(void) {  }
 #endif
 
 #define get_cpu()		({ preempt_disable(); smp_processor_id(); })
+#define raw_get_cpu()		({ raw_preempt_disable(); raw_smp_processor_id(); })
 #define put_cpu()		preempt_enable()
+#define raw_put_cpu_no_resched()	raw_preempt_enable_no_resched()
 
 /*
  * Callback to arch code if there's nosmp or maxcpus=0 on the
diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h
index 46cca4c..3323536 100644
--- a/include/linux/sock_diag.h
+++ b/include/linux/sock_diag.h
@@ -11,7 +11,7 @@ struct sock;
 struct sock_diag_handler {
 	__u8 family;
 	int (*dump)(struct sk_buff *skb, struct nlmsghdr *nlh);
-};
+} __do_const;
 
 int sock_diag_register(const struct sock_diag_handler *h);
 void sock_diag_unregister(const struct sock_diag_handler *h);
diff --git a/include/linux/sonet.h b/include/linux/sonet.h
index 680f9a3..f13aeb0 100644
--- a/include/linux/sonet.h
+++ b/include/linux/sonet.h
@@ -7,7 +7,7 @@
 #include <uapi/linux/sonet.h>
 
 struct k_sonet_stats {
-#define __HANDLE_ITEM(i) atomic_t i
+#define __HANDLE_ITEM(i) atomic_unchecked_t i
 	__SONET_ITEMS
 #undef __HANDLE_ITEM
 };
diff --git a/include/linux/sunrpc/addr.h b/include/linux/sunrpc/addr.h
index 07d8e53..dc934c9 100644
--- a/include/linux/sunrpc/addr.h
+++ b/include/linux/sunrpc/addr.h
@@ -23,9 +23,9 @@ static inline unsigned short rpc_get_port(const struct sockaddr *sap)
 {
 	switch (sap->sa_family) {
 	case AF_INET:
-		return ntohs(((struct sockaddr_in *)sap)->sin_port);
+		return ntohs(((const struct sockaddr_in *)sap)->sin_port);
 	case AF_INET6:
-		return ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
+		return ntohs(((const struct sockaddr_in6 *)sap)->sin6_port);
 	}
 	return 0;
 }
@@ -58,7 +58,7 @@ static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1,
 static inline bool __rpc_copy_addr4(struct sockaddr *dst,
 				    const struct sockaddr *src)
 {
-	const struct sockaddr_in *ssin = (struct sockaddr_in *) src;
+	const struct sockaddr_in *ssin = (const struct sockaddr_in *) src;
 	struct sockaddr_in *dsin = (struct sockaddr_in *) dst;
 
 	dsin->sin_family = ssin->sin_family;
@@ -164,7 +164,7 @@ static inline u32 rpc_get_scope_id(const struct sockaddr *sa)
 	if (sa->sa_family != AF_INET6)
 		return 0;
 
-	return ((struct sockaddr_in6 *) sa)->sin6_scope_id;
+	return ((const struct sockaddr_in6 *) sa)->sin6_scope_id;
 }
 
 #endif /* _LINUX_SUNRPC_ADDR_H */
diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
index 70736b9..37f33db 100644
--- a/include/linux/sunrpc/clnt.h
+++ b/include/linux/sunrpc/clnt.h
@@ -97,7 +97,7 @@ struct rpc_procinfo {
 	unsigned int		p_timer;	/* Which RTT timer to use */
 	u32			p_statidx;	/* Which procedure to account */
 	const char *		p_name;		/* name of procedure */
-};
+} __do_const;
 
 #ifdef __KERNEL__
 
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 1bc7cd0..7912dc2 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -417,7 +417,7 @@ struct svc_procedure {
 	unsigned int		pc_count;	/* call count */
 	unsigned int		pc_cachetype;	/* cache info (NFS) */
 	unsigned int		pc_xdrressize;	/* maximum size of XDR reply */
-};
+} __do_const;
 
 /*
  * Function prototypes.
diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
index 5cf99a0..c0a1b98 100644
--- a/include/linux/sunrpc/svc_rdma.h
+++ b/include/linux/sunrpc/svc_rdma.h
@@ -53,15 +53,15 @@ extern unsigned int svcrdma_ord;
 extern unsigned int svcrdma_max_requests;
 extern unsigned int svcrdma_max_req_size;
 
-extern atomic_t rdma_stat_recv;
-extern atomic_t rdma_stat_read;
-extern atomic_t rdma_stat_write;
-extern atomic_t rdma_stat_sq_starve;
-extern atomic_t rdma_stat_rq_starve;
-extern atomic_t rdma_stat_rq_poll;
-extern atomic_t rdma_stat_rq_prod;
-extern atomic_t rdma_stat_sq_poll;
-extern atomic_t rdma_stat_sq_prod;
+extern atomic_unchecked_t rdma_stat_recv;
+extern atomic_unchecked_t rdma_stat_read;
+extern atomic_unchecked_t rdma_stat_write;
+extern atomic_unchecked_t rdma_stat_sq_starve;
+extern atomic_unchecked_t rdma_stat_rq_starve;
+extern atomic_unchecked_t rdma_stat_rq_poll;
+extern atomic_unchecked_t rdma_stat_rq_prod;
+extern atomic_unchecked_t rdma_stat_sq_poll;
+extern atomic_unchecked_t rdma_stat_sq_prod;
 
 #define RPCRDMA_VERSION 1
 
diff --git a/include/linux/sunrpc/svcauth.h b/include/linux/sunrpc/svcauth.h
index 8d71d65..f79586e 100644
--- a/include/linux/sunrpc/svcauth.h
+++ b/include/linux/sunrpc/svcauth.h
@@ -120,7 +120,7 @@ struct auth_ops {
 	int	(*release)(struct svc_rqst *rq);
 	void	(*domain_release)(struct auth_domain *);
 	int	(*set_client)(struct svc_rqst *rq);
-};
+} __do_const;
 
 #define	SVC_GARBAGE	1
 #define	SVC_SYSERR	2
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index e7a018e..49f8b17 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -60,7 +60,8 @@ extern void
 
 extern void
 swiotlb_free_coherent(struct device *hwdev, size_t size,
-		      void *vaddr, dma_addr_t dma_handle);
+		      void *vaddr, dma_addr_t dma_handle,
+		      struct dma_attrs *attrs);
 
 extern dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
 				   unsigned long offset, size_t size,
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index b0881a0..559a440 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -98,10 +98,16 @@ struct sigaltstack;
 #define __MAP(n,...) __MAP##n(__VA_ARGS__)
 
 #define __SC_DECL(t, a)	t a
+#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))
 #define __TYPE_IS_L(t)	(__same_type((t)0, 0L))
 #define __TYPE_IS_UL(t)	(__same_type((t)0, 0UL))
 #define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL))
-#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
+#define __SC_LONG(t, a)	__typeof(				\
+	__builtin_choose_expr(					\
+		sizeof(t) > sizeof(int),			\
+		(t) 0,						\
+		__builtin_choose_expr(__TYPE_IS_U(t), 0UL, 0L)	\
+	)) a
 #define __SC_CAST(t, a)	(t) a
 #define __SC_ARGS(t, a)	a
 #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
@@ -379,11 +385,11 @@ asmlinkage long sys_sync(void);
 asmlinkage long sys_fsync(unsigned int fd);
 asmlinkage long sys_fdatasync(unsigned int fd);
 asmlinkage long sys_bdflush(int func, long data);
-asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
-				char __user *type, unsigned long flags,
+asmlinkage long sys_mount(const char __user *dev_name, const char __user *dir_name,
+				const char __user *type, unsigned long flags,
 				void __user *data);
-asmlinkage long sys_umount(char __user *name, int flags);
-asmlinkage long sys_oldumount(char __user *name);
+asmlinkage long sys_umount(const char __user *name, int flags);
+asmlinkage long sys_oldumount(const char __user *name);
 asmlinkage long sys_truncate(const char __user *path, long length);
 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
 asmlinkage long sys_stat(const char __user *filename,
@@ -595,7 +601,7 @@ asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
 asmlinkage long sys_send(int, void __user *, size_t, unsigned);
 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
-				struct sockaddr __user *, int);
+				struct sockaddr __user *, int) __intentional_overflow(0);
 asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
 			     unsigned int vlen, unsigned flags);
diff --git a/include/linux/syscore_ops.h b/include/linux/syscore_ops.h
index 27b3b0b..e093dd9 100644
--- a/include/linux/syscore_ops.h
+++ b/include/linux/syscore_ops.h
@@ -16,7 +16,7 @@ struct syscore_ops {
 	int (*suspend)(void);
 	void (*resume)(void);
 	void (*shutdown)(void);
-};
+} __do_const;
 
 extern void register_syscore_ops(struct syscore_ops *ops);
 extern void unregister_syscore_ops(struct syscore_ops *ops);
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 14a8ff2..fa95f3a 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -34,13 +34,13 @@ struct ctl_table_root;
 struct ctl_table_header;
 struct ctl_dir;
 
-typedef struct ctl_table ctl_table;
-
 typedef int proc_handler (struct ctl_table *ctl, int write,
 			  void __user *buffer, size_t *lenp, loff_t *ppos);
 
 extern int proc_dostring(struct ctl_table *, int,
 			 void __user *, size_t *, loff_t *);
+extern int proc_dostring_modpriv(struct ctl_table *, int,
+			 void __user *, size_t *, loff_t *);
 extern int proc_dointvec(struct ctl_table *, int,
 			 void __user *, size_t *, loff_t *);
 extern int proc_dointvec_minmax(struct ctl_table *, int,
@@ -115,7 +115,9 @@ struct ctl_table
 	struct ctl_table_poll *poll;
 	void *extra1;
 	void *extra2;
-};
+} __do_const __randomize_layout;
+typedef struct ctl_table __no_const ctl_table_no_const;
+typedef struct ctl_table ctl_table;
 
 struct ctl_node {
 	struct rb_node node;
diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index f97d0db..c1187dc 100644
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -34,7 +34,8 @@ struct attribute {
 	struct lock_class_key	*key;
 	struct lock_class_key	skey;
 #endif
-};
+} __do_const;
+typedef struct attribute __no_const attribute_no_const;
 
 /**
  *	sysfs_attr_init - initialize a dynamically allocated sysfs attribute
@@ -63,7 +64,8 @@ struct attribute_group {
 					      struct attribute *, int);
 	struct attribute	**attrs;
 	struct bin_attribute	**bin_attrs;
-};
+} __do_const;
+typedef struct attribute_group __no_const attribute_group_no_const;
 
 /**
  * Use these macros to make defining attributes easier. See include/linux/device.h
@@ -128,7 +130,8 @@ struct bin_attribute {
 			 char *, loff_t, size_t);
 	int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
 		    struct vm_area_struct *vma);
-};
+} __do_const;
+typedef struct bin_attribute __no_const bin_attribute_no_const;
 
 /**
  *	sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
index 387fa7d..3fcde6b 100644
--- a/include/linux/sysrq.h
+++ b/include/linux/sysrq.h
@@ -16,6 +16,7 @@
 
 #include <linux/errno.h>
 #include <linux/types.h>
+#include <linux/compiler.h>
 
 /* Possible values of bitmask for enabling sysrq functions */
 /* 0x0001 is reserved for enable everything */
@@ -33,7 +34,7 @@ struct sysrq_key_op {
 	char *help_msg;
 	char *action_msg;
 	int enable_mask;
-};
+} __do_const;
 
 #ifdef CONFIG_MAGIC_SYSRQ
 
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index ff307b5..f1a4468 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -145,6 +145,13 @@ static inline bool test_and_clear_restore_sigmask(void)
 #error "no set_restore_sigmask() provided and default one won't work"
 #endif
 
+extern void __check_object_size(const void *ptr, unsigned long n, bool to_user, bool const_size);
+
+static inline void check_object_size(const void *ptr, unsigned long n, bool to_user)
+{
+	__check_object_size(ptr, n, to_user, __builtin_constant_p(n));
+}
+
 #endif	/* __KERNEL__ */
 
 #endif /* _LINUX_THREAD_INFO_H */
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 1c3316a..ae83b9f 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -202,7 +202,7 @@ struct tty_port {
 	const struct tty_port_operations *ops;	/* Port operations */
 	spinlock_t		lock;		/* Lock protecting tty field */
 	int			blocked_open;	/* Waiting to open */
-	int			count;		/* Usage count */
+	atomic_t		count;		/* Usage count */
 	wait_queue_head_t	open_wait;	/* Open waiters */
 	wait_queue_head_t	close_wait;	/* Close waiters */
 	wait_queue_head_t	delta_msr_wait;	/* Modem status change */
@@ -284,7 +284,7 @@ struct tty_struct {
 	/* If the tty has a pending do_SAK, queue it here - akpm */
 	struct work_struct SAK_work;
 	struct tty_port *port;
-};
+} __randomize_layout;
 
 /* Each of a tty's open files has private_data pointing to tty_file_private */
 struct tty_file_private {
@@ -550,7 +550,7 @@ extern int tty_port_open(struct tty_port *port,
 				struct tty_struct *tty, struct file *filp);
 static inline int tty_port_users(struct tty_port *port)
 {
-	return port->count + port->blocked_open;
+	return atomic_read(&port->count) + port->blocked_open;
 }
 
 extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
index 756a609..89db85e 100644
--- a/include/linux/tty_driver.h
+++ b/include/linux/tty_driver.h
@@ -285,7 +285,7 @@ struct tty_operations {
 	void (*poll_put_char)(struct tty_driver *driver, int line, char ch);
 #endif
 	const struct file_operations *proc_fops;
-};
+} __do_const __randomize_layout;
 
 struct tty_driver {
 	int	magic;		/* magic number for this structure */
@@ -319,7 +319,7 @@ struct tty_driver {
 
 	const struct tty_operations *ops;
 	struct list_head tty_drivers;
-};
+} __randomize_layout;
 
 extern struct list_head tty_drivers;
 
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
index 00c9d68..bc0188b 100644
--- a/include/linux/tty_ldisc.h
+++ b/include/linux/tty_ldisc.h
@@ -215,7 +215,7 @@ struct tty_ldisc_ops {
 
 	struct  module *owner;
 
-	int refcount;
+	atomic_t refcount;
 };
 
 struct tty_ldisc {
diff --git a/include/linux/types.h b/include/linux/types.h
index a0bb704..f511c77 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -177,10 +177,26 @@ typedef struct {
 	int counter;
 } atomic_t;
 
+#ifdef CONFIG_PAX_REFCOUNT
+typedef struct {
+	int counter;
+} atomic_unchecked_t;
+#else
+typedef atomic_t atomic_unchecked_t;
+#endif
+
 #ifdef CONFIG_64BIT
 typedef struct {
 	long counter;
 } atomic64_t;
+
+#ifdef CONFIG_PAX_REFCOUNT
+typedef struct {
+	long counter;
+} atomic64_unchecked_t;
+#else
+typedef atomic64_t atomic64_unchecked_t;
+#endif
 #endif
 
 struct list_head {
diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
index ecd3319..8a36ded 100644
--- a/include/linux/uaccess.h
+++ b/include/linux/uaccess.h
@@ -75,11 +75,11 @@ static inline unsigned long __copy_from_user_nocache(void *to,
 		long ret;				\
 		mm_segment_t old_fs = get_fs();		\
 							\
-		set_fs(KERNEL_DS);			\
 		pagefault_disable();			\
-		ret = __copy_from_user_inatomic(&(retval), (__force typeof(retval) __user *)(addr), sizeof(retval));		\
-		pagefault_enable();			\
+		set_fs(KERNEL_DS);			\
+		ret = __copy_from_user_inatomic(&(retval), (typeof(retval) __force_user *)(addr), sizeof(retval));		\
 		set_fs(old_fs);				\
+		pagefault_enable();			\
 		ret;					\
 	})
 
diff --git a/include/linux/uidgid.h b/include/linux/uidgid.h
index 2d1f9b6..d7a9fce 100644
--- a/include/linux/uidgid.h
+++ b/include/linux/uidgid.h
@@ -175,4 +175,9 @@ static inline bool kgid_has_mapping(struct user_namespace *ns, kgid_t gid)
 
 #endif /* CONFIG_USER_NS */
 
+#define GR_GLOBAL_UID(x) from_kuid_munged(&init_user_ns, (x))
+#define GR_GLOBAL_GID(x) from_kgid_munged(&init_user_ns, (x))
+#define gr_is_global_root(x) uid_eq((x), GLOBAL_ROOT_UID)
+#define gr_is_global_nonroot(x) (!uid_eq((x), GLOBAL_ROOT_UID))
+
 #endif /* _LINUX_UIDGID_H */
diff --git a/include/linux/unaligned/access_ok.h b/include/linux/unaligned/access_ok.h
index 99c1b4d..562e6f3 100644
--- a/include/linux/unaligned/access_ok.h
+++ b/include/linux/unaligned/access_ok.h
@@ -4,34 +4,34 @@
 #include <linux/kernel.h>
 #include <asm/byteorder.h>
 
-static inline u16 get_unaligned_le16(const void *p)
+static inline u16 __intentional_overflow(-1) get_unaligned_le16(const void *p)
 {
-	return le16_to_cpup((__le16 *)p);
+	return le16_to_cpup((const __le16 *)p);
 }
 
-static inline u32 get_unaligned_le32(const void *p)
+static inline u32 __intentional_overflow(-1) get_unaligned_le32(const void *p)
 {
-	return le32_to_cpup((__le32 *)p);
+	return le32_to_cpup((const __le32 *)p);
 }
 
-static inline u64 get_unaligned_le64(const void *p)
+static inline u64 __intentional_overflow(-1) get_unaligned_le64(const void *p)
 {
-	return le64_to_cpup((__le64 *)p);
+	return le64_to_cpup((const __le64 *)p);
 }
 
-static inline u16 get_unaligned_be16(const void *p)
+static inline u16 __intentional_overflow(-1) get_unaligned_be16(const void *p)
 {
-	return be16_to_cpup((__be16 *)p);
+	return be16_to_cpup((const __be16 *)p);
 }
 
-static inline u32 get_unaligned_be32(const void *p)
+static inline u32 __intentional_overflow(-1) get_unaligned_be32(const void *p)
 {
-	return be32_to_cpup((__be32 *)p);
+	return be32_to_cpup((const __be32 *)p);
 }
 
-static inline u64 get_unaligned_be64(const void *p)
+static inline u64 __intentional_overflow(-1) get_unaligned_be64(const void *p)
 {
-	return be64_to_cpup((__be64 *)p);
+	return be64_to_cpup((const __be64 *)p);
 }
 
 static inline void put_unaligned_le16(u16 val, void *p)
diff --git a/include/linux/usb.h b/include/linux/usb.h
index d2465bc..5256de4 100644
--- a/include/linux/usb.h
+++ b/include/linux/usb.h
@@ -571,7 +571,7 @@ struct usb_device {
 	int maxchild;
 
 	u32 quirks;
-	atomic_t urbnum;
+	atomic_unchecked_t urbnum;
 
 	unsigned long active_duration;
 
@@ -1655,7 +1655,7 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
 
 extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
 	__u8 request, __u8 requesttype, __u16 value, __u16 index,
-	void *data, __u16 size, int timeout);
+	void *data, __u16 size, int timeout) __intentional_overflow(-1);
 extern int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
 	void *data, int len, int *actual_length, int timeout);
 extern int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index e452ba6..78f8e80 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -39,7 +39,7 @@ enum {
  */
 struct renesas_usbhs_driver_callback {
 	int (*notify_hotplug)(struct platform_device *pdev);
-};
+} __no_const;
 
 /*
  * callback functions for platform
diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
index 4836ba3..603f6ee 100644
--- a/include/linux/user_namespace.h
+++ b/include/linux/user_namespace.h
@@ -33,7 +33,7 @@ struct user_namespace {
 	struct key		*persistent_keyring_register;
 	struct rw_semaphore	persistent_keyring_register_sem;
 #endif
-};
+} __randomize_layout;
 
 extern struct user_namespace init_user_ns;
 
diff --git a/include/linux/utsname.h b/include/linux/utsname.h
index 239e277..22a5cf5 100644
--- a/include/linux/utsname.h
+++ b/include/linux/utsname.h
@@ -24,7 +24,7 @@ struct uts_namespace {
 	struct new_utsname name;
 	struct user_namespace *user_ns;
 	unsigned int proc_inum;
-};
+} __randomize_layout;
 extern struct uts_namespace init_uts_ns;
 
 #ifdef CONFIG_UTS_NS
diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h
index 6f8fbcf..4efc177 100644
--- a/include/linux/vermagic.h
+++ b/include/linux/vermagic.h
@@ -25,9 +25,42 @@
 #define MODULE_ARCH_VERMAGIC ""
 #endif
 
+#ifdef CONFIG_PAX_REFCOUNT
+#define MODULE_PAX_REFCOUNT "REFCOUNT "
+#else
+#define MODULE_PAX_REFCOUNT ""
+#endif
+
+#ifdef CONSTIFY_PLUGIN
+#define MODULE_CONSTIFY_PLUGIN "CONSTIFY_PLUGIN "
+#else
+#define MODULE_CONSTIFY_PLUGIN ""
+#endif
+
+#ifdef STACKLEAK_PLUGIN
+#define MODULE_STACKLEAK_PLUGIN "STACKLEAK_PLUGIN "
+#else
+#define MODULE_STACKLEAK_PLUGIN ""
+#endif
+
+#ifdef RANDSTRUCT_PLUGIN
+#include <generated/randomize_layout_hash.h>
+#define MODULE_RANDSTRUCT_PLUGIN "RANDSTRUCT_PLUGIN_" RANDSTRUCT_HASHED_SEED
+#else
+#define MODULE_RANDSTRUCT_PLUGIN
+#endif
+
+#ifdef CONFIG_GRKERNSEC
+#define MODULE_GRSEC "GRSEC "
+#else
+#define MODULE_GRSEC ""
+#endif
+
 #define VERMAGIC_STRING 						\
 	UTS_RELEASE " "							\
 	MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT 			\
 	MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS	\
-	MODULE_ARCH_VERMAGIC
+	MODULE_ARCH_VERMAGIC						\
+	MODULE_PAX_REFCOUNT MODULE_CONSTIFY_PLUGIN MODULE_STACKLEAK_PLUGIN \
+	MODULE_GRSEC MODULE_RANDSTRUCT_PLUGIN
 
diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h
index 502073a..a7de024 100644
--- a/include/linux/vga_switcheroo.h
+++ b/include/linux/vga_switcheroo.h
@@ -63,8 +63,8 @@ int vga_switcheroo_get_client_state(struct pci_dev *dev);
 
 void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic);
 
-int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain);
-int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain);
+int vga_switcheroo_init_domain_pm_ops(struct device *dev, dev_pm_domain_no_const *domain);
+int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, dev_pm_domain_no_const *domain);
 #else
 
 static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
@@ -81,8 +81,8 @@ static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return
 
 static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic) {}
 
-static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
-static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
+static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, dev_pm_domain_no_const *domain) { return -EINVAL; }
+static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, dev_pm_domain_no_const *domain) { return -EINVAL; }
 
 #endif
 #endif /* _LINUX_VGA_SWITCHEROO_H_ */
diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 4b8a891..e9a2863 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -16,6 +16,11 @@ struct vm_area_struct;		/* vma defining user mapping in mm_types.h */
 #define VM_USERMAP		0x00000008	/* suitable for remap_vmalloc_range */
 #define VM_VPAGES		0x00000010	/* buffer for pages was vmalloc'ed */
 #define VM_UNINITIALIZED	0x00000020	/* vm_struct is not fully initialized */
+
+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
+#define VM_KERNEXEC		0x00000040	/* allocate from executable kernel memory range */
+#endif
+
 /* bits [20..32] reserved for arch specific ioremap internals */
 
 /*
@@ -82,6 +87,10 @@ extern void *vmap(struct page **pages, unsigned int count,
 			unsigned long flags, pgprot_t prot);
 extern void vunmap(const void *addr);
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+extern void unmap_process_stacks(struct task_struct *task);
+#endif
+
 extern int remap_vmalloc_range_partial(struct vm_area_struct *vma,
 				       unsigned long uaddr, void *kaddr,
 				       unsigned long size);
@@ -142,7 +151,7 @@ extern void free_vm_area(struct vm_struct *area);
 
 /* for /dev/kmem */
 extern long vread(char *buf, char *addr, unsigned long count);
-extern long vwrite(char *buf, char *addr, unsigned long count);
+extern long vwrite(char *buf, char *addr, unsigned long count) __size_overflow(3);
 
 /*
  *	Internals.  Dont't use..
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 82e7db7..f8ce3d0 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -108,18 +108,18 @@ static inline void vm_events_fold_cpu(int cpu)
 /*
  * Zone based page accounting with per cpu differentials.
  */
-extern atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
+extern atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
 
 static inline void zone_page_state_add(long x, struct zone *zone,
 				 enum zone_stat_item item)
 {
-	atomic_long_add(x, &zone->vm_stat[item]);
-	atomic_long_add(x, &vm_stat[item]);
+	atomic_long_add_unchecked(x, &zone->vm_stat[item]);
+	atomic_long_add_unchecked(x, &vm_stat[item]);
 }
 
-static inline unsigned long global_page_state(enum zone_stat_item item)
+static inline unsigned long __intentional_overflow(-1) global_page_state(enum zone_stat_item item)
 {
-	long x = atomic_long_read(&vm_stat[item]);
+	long x = atomic_long_read_unchecked(&vm_stat[item]);
 #ifdef CONFIG_SMP
 	if (x < 0)
 		x = 0;
@@ -127,10 +127,10 @@ static inline unsigned long global_page_state(enum zone_stat_item item)
 	return x;
 }
 
-static inline unsigned long zone_page_state(struct zone *zone,
+static inline unsigned long __intentional_overflow(-1) zone_page_state(struct zone *zone,
 					enum zone_stat_item item)
 {
-	long x = atomic_long_read(&zone->vm_stat[item]);
+	long x = atomic_long_read_unchecked(&zone->vm_stat[item]);
 #ifdef CONFIG_SMP
 	if (x < 0)
 		x = 0;
@@ -147,7 +147,7 @@ static inline unsigned long zone_page_state(struct zone *zone,
 static inline unsigned long zone_page_state_snapshot(struct zone *zone,
 					enum zone_stat_item item)
 {
-	long x = atomic_long_read(&zone->vm_stat[item]);
+	long x = atomic_long_read_unchecked(&zone->vm_stat[item]);
 
 #ifdef CONFIG_SMP
 	int cpu;
@@ -234,14 +234,14 @@ static inline void __mod_zone_page_state(struct zone *zone,
 
 static inline void __inc_zone_state(struct zone *zone, enum zone_stat_item item)
 {
-	atomic_long_inc(&zone->vm_stat[item]);
-	atomic_long_inc(&vm_stat[item]);
+	atomic_long_inc_unchecked(&zone->vm_stat[item]);
+	atomic_long_inc_unchecked(&vm_stat[item]);
 }
 
 static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
 {
-	atomic_long_dec(&zone->vm_stat[item]);
-	atomic_long_dec(&vm_stat[item]);
+	atomic_long_dec_unchecked(&zone->vm_stat[item]);
+	atomic_long_dec_unchecked(&vm_stat[item]);
 }
 
 static inline void __inc_zone_page_state(struct page *page,
diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index 91b0a68..0e9adf6 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -28,7 +28,7 @@ struct xattr_handler {
 		   size_t size, int handler_flags);
 	int (*set)(struct dentry *dentry, const char *name, const void *buffer,
 		   size_t size, int flags, int handler_flags);
-};
+} __do_const;
 
 struct xattr {
 	const char *name;
@@ -37,6 +37,9 @@ struct xattr {
 };
 
 ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
+ssize_t pax_getxattr(struct dentry *, void *, size_t);
+#endif
 ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
 ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
 int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
diff --git a/include/linux/zlib.h b/include/linux/zlib.h
index 9c5a6b4..09c9438 100644
--- a/include/linux/zlib.h
+++ b/include/linux/zlib.h
@@ -31,6 +31,7 @@
 #define _ZLIB_H
 
 #include <linux/zconf.h>
+#include <linux/compiler.h>
 
 /* zlib deflate based on ZLIB_VERSION "1.1.3" */
 /* zlib inflate based on ZLIB_VERSION "1.2.3" */
@@ -179,7 +180,7 @@ typedef z_stream *z_streamp;
 
                         /* basic functions */
 
-extern int zlib_deflate_workspacesize (int windowBits, int memLevel);
+extern int zlib_deflate_workspacesize (int windowBits, int memLevel) __intentional_overflow(0);
 /*
    Returns the number of bytes that needs to be allocated for a per-
    stream workspace with the specified parameters.  A pointer to this
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index eec6e46..82d5641 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -77,7 +77,7 @@ struct v4l2_file_operations {
 	int (*mmap) (struct file *, struct vm_area_struct *);
 	int (*open) (struct file *);
 	int (*release) (struct file *);
-};
+} __do_const;
 
 /*
  * Newer version of video_device, handled by videodev2.c
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index ffb69da..040393e 100644
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -95,7 +95,7 @@ int __must_check v4l2_device_register(struct device *dev, struct v4l2_device *v4
    this function returns 0. If the name ends with a digit (e.g. cx18),
    then the name will be set to cx18-0 since cx180 looks really odd. */
 int v4l2_device_set_name(struct v4l2_device *v4l2_dev, const char *basename,
-						atomic_t *instance);
+						atomic_unchecked_t *instance);
 
 /* Set v4l2_dev->dev to NULL. Call when the USB parent disconnects.
    Since the parent disappears this ensures that v4l2_dev doesn't have an
diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h
index d9fa68f..45c88d1 100644
--- a/include/net/9p/transport.h
+++ b/include/net/9p/transport.h
@@ -63,7 +63,7 @@ struct p9_trans_module {
 	int (*cancelled)(struct p9_client *, struct p9_req_t *req);
 	int (*zc_request)(struct p9_client *, struct p9_req_t *,
 			  char *, char *, int , int, int, int);
-};
+} __do_const;
 
 void v9fs_register_trans(struct p9_trans_module *m);
 void v9fs_unregister_trans(struct p9_trans_module *m);
diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index a175ba4..196eb82 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -36,7 +36,7 @@ struct unix_skb_parms {
 	u32			secid;		/* Security ID		*/
 #endif
 	u32			consumed;
-};
+} __randomize_layout;
 
 #define UNIXCB(skb) 	(*(struct unix_skb_parms *)&((skb)->cb))
 #define UNIXSID(skb)	(&UNIXCB((skb)).secid)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index 4abdcb2..945c5cc 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -601,7 +601,7 @@ struct l2cap_ops {
 	long			(*get_sndtimeo) (struct l2cap_chan *chan);
 	struct sk_buff		*(*alloc_skb) (struct l2cap_chan *chan,
 					       unsigned long len, int nb);
-};
+} __do_const;
 
 struct l2cap_conn {
 	struct hci_conn		*hcon;
diff --git a/include/net/caif/cfctrl.h b/include/net/caif/cfctrl.h
index f2ae33d..c457cf0 100644
--- a/include/net/caif/cfctrl.h
+++ b/include/net/caif/cfctrl.h
@@ -52,7 +52,7 @@ struct cfctrl_rsp {
 	void (*radioset_rsp)(void);
 	void (*reject_rsp)(struct cflayer *layer, u8 linkid,
 				struct cflayer *client_layer);
-};
+} __no_const;
 
 /* Link Setup Parameters for CAIF-Links. */
 struct cfctrl_link_param {
@@ -101,8 +101,8 @@ struct cfctrl_request_info {
 struct cfctrl {
 	struct cfsrvl serv;
 	struct cfctrl_rsp res;
-	atomic_t req_seq_no;
-	atomic_t rsp_seq_no;
+	atomic_unchecked_t req_seq_no;
+	atomic_unchecked_t rsp_seq_no;
 	struct list_head list;
 	/* Protects from simultaneous access to first_req list */
 	spinlock_t info_list_lock;
diff --git a/include/net/flow.h b/include/net/flow.h
index 8109a15..504466d 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -231,6 +231,6 @@ void flow_cache_fini(struct net *net);
 
 void flow_cache_flush(struct net *net);
 void flow_cache_flush_deferred(struct net *net);
-extern atomic_t flow_cache_genid;
+extern atomic_unchecked_t flow_cache_genid;
 
 #endif
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 93695f0..766d71c 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -120,7 +120,7 @@ struct genl_ops {
 	u8			cmd;
 	u8			internal_flags;
 	u8			flags;
-};
+} __do_const;
 
 int __genl_register_family(struct genl_family *family);
 
diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h
index 734d9b5..48a9a4b 100644
--- a/include/net/gro_cells.h
+++ b/include/net/gro_cells.h
@@ -29,7 +29,7 @@ static inline void gro_cells_receive(struct gro_cells *gcells, struct sk_buff *s
 		cell += skb_get_rx_queue(skb) & gcells->gro_cells_mask;
 
 	if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
-		atomic_long_inc(&dev->rx_dropped);
+		atomic_long_inc_unchecked(&dev->rx_dropped);
 		kfree_skb(skb);
 		return;
 	}
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
index 7a43138..bc76865 100644
--- a/include/net/inet_connection_sock.h
+++ b/include/net/inet_connection_sock.h
@@ -62,7 +62,7 @@ struct inet_connection_sock_af_ops {
 	void	    (*addr2sockaddr)(struct sock *sk, struct sockaddr *);
 	int	    (*bind_conflict)(const struct sock *sk,
 				     const struct inet_bind_bucket *tb, bool relax);
-};
+} __do_const;
 
 /** inet_connection_sock - INET connection oriented sock
  *
diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
index 01d590e..f69c61d 100644
--- a/include/net/inetpeer.h
+++ b/include/net/inetpeer.h
@@ -47,7 +47,7 @@ struct inet_peer {
 	 */
 	union {
 		struct {
-			atomic_t			rid;		/* Frag reception counter */
+			atomic_unchecked_t		rid;		/* Frag reception counter */
 		};
 		struct rcu_head         rcu;
 		struct inet_peer	*gc_next;
diff --git a/include/net/ip.h b/include/net/ip.h
index 7596eb2..f7f5fad 100644
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -309,7 +309,7 @@ static inline unsigned int ip_skb_dst_mtu(const struct sk_buff *skb)
 	}
 }
 
-u32 ip_idents_reserve(u32 hash, int segs);
+u32 ip_idents_reserve(u32 hash, int segs) __intentional_overflow(-1);
 void __ip_select_ident(struct iphdr *iph, int segs);
 
 static inline void ip_select_ident_segs(struct sk_buff *skb, struct sock *sk, int segs)
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 9922093..a1755d6 100644
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@@ -169,7 +169,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh);
 
 #define FIB_RES_SADDR(net, res)				\
 	((FIB_RES_NH(res).nh_saddr_genid ==		\
-	  atomic_read(&(net)->ipv4.dev_addr_genid)) ?	\
+	  atomic_read_unchecked(&(net)->ipv4.dev_addr_genid)) ?	\
 	 FIB_RES_NH(res).nh_saddr :			\
 	 fib_info_update_nh_saddr((net), &FIB_RES_NH(res)))
 #define FIB_RES_GW(res)			(FIB_RES_NH(res).nh_gw)
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 624a8a5..b1e2a24 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -558,7 +558,7 @@ struct ip_vs_conn {
 	struct ip_vs_conn       *control;       /* Master control connection */
 	atomic_t                n_control;      /* Number of controlled ones */
 	struct ip_vs_dest       *dest;          /* real server */
-	atomic_t                in_pkts;        /* incoming packet counter */
+	atomic_unchecked_t      in_pkts;        /* incoming packet counter */
 
 	/* packet transmitter for different forwarding methods.  If it
 	   mangles the packet, it must return NF_DROP or better NF_STOLEN,
@@ -705,7 +705,7 @@ struct ip_vs_dest {
 	__be16			port;		/* port number of the server */
 	union nf_inet_addr	addr;		/* IP address of the server */
 	volatile unsigned int	flags;		/* dest status flags */
-	atomic_t		conn_flags;	/* flags to copy to conn */
+	atomic_unchecked_t	conn_flags;	/* flags to copy to conn */
 	atomic_t		weight;		/* server weight */
 
 	atomic_t		refcnt;		/* reference counter */
@@ -960,11 +960,11 @@ struct netns_ipvs {
 	/* ip_vs_lblc */
 	int			sysctl_lblc_expiration;
 	struct ctl_table_header	*lblc_ctl_header;
-	struct ctl_table	*lblc_ctl_table;
+	ctl_table_no_const	*lblc_ctl_table;
 	/* ip_vs_lblcr */
 	int			sysctl_lblcr_expiration;
 	struct ctl_table_header	*lblcr_ctl_header;
-	struct ctl_table	*lblcr_ctl_table;
+	ctl_table_no_const	*lblcr_ctl_table;
 	/* ip_vs_est */
 	struct list_head	est_list;	/* estimator list */
 	spinlock_t		est_lock;
diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h
index 8d4f588..2e37ad2 100644
--- a/include/net/irda/ircomm_tty.h
+++ b/include/net/irda/ircomm_tty.h
@@ -33,6 +33,7 @@
 #include <linux/termios.h>
 #include <linux/timer.h>
 #include <linux/tty.h>		/* struct tty_struct */
+#include <asm/local.h>
 
 #include <net/irda/irias_object.h>
 #include <net/irda/ircomm_core.h>
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 714cc9a..ea05f3e 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -149,7 +149,7 @@ struct iucv_skb_cb {
 struct iucv_sock_list {
 	struct hlist_head head;
 	rwlock_t	  lock;
-	atomic_t	  autobind_name;
+	atomic_unchecked_t autobind_name;
 };
 
 unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
diff --git a/include/net/llc_c_ac.h b/include/net/llc_c_ac.h
index f3be818..bf46196 100644
--- a/include/net/llc_c_ac.h
+++ b/include/net/llc_c_ac.h
@@ -87,7 +87,7 @@
 #define LLC_CONN_AC_STOP_SENDACK_TMR			70
 #define LLC_CONN_AC_START_SENDACK_TMR_IF_NOT_RUNNING	71
 
-typedef int (*llc_conn_action_t)(struct sock *sk, struct sk_buff *skb);
+typedef int (* const llc_conn_action_t)(struct sock *sk, struct sk_buff *skb);
 
 int llc_conn_ac_clear_remote_busy(struct sock *sk, struct sk_buff *skb);
 int llc_conn_ac_conn_ind(struct sock *sk, struct sk_buff *skb);
diff --git a/include/net/llc_c_ev.h b/include/net/llc_c_ev.h
index 3948cf1..83b28c4 100644
--- a/include/net/llc_c_ev.h
+++ b/include/net/llc_c_ev.h
@@ -125,8 +125,8 @@ static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)
 	return (struct llc_conn_state_ev *)skb->cb;
 }
 
-typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
-typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
+typedef int (* const llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
+typedef int (* const llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
 
 int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb);
 int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb);
diff --git a/include/net/llc_c_st.h b/include/net/llc_c_st.h
index 0e79cfb..f46db31 100644
--- a/include/net/llc_c_st.h
+++ b/include/net/llc_c_st.h
@@ -37,7 +37,7 @@ struct llc_conn_state_trans {
 	u8		   next_state;
 	llc_conn_ev_qfyr_t *ev_qualifiers;
 	llc_conn_action_t  *ev_actions;
-};
+} __do_const;
 
 struct llc_conn_state {
 	u8			    current_state;
diff --git a/include/net/llc_s_ac.h b/include/net/llc_s_ac.h
index a61b98c..aade1eb 100644
--- a/include/net/llc_s_ac.h
+++ b/include/net/llc_s_ac.h
@@ -23,7 +23,7 @@
 #define SAP_ACT_TEST_IND	9
 
 /* All action functions must look like this */
-typedef int (*llc_sap_action_t)(struct llc_sap *sap, struct sk_buff *skb);
+typedef int (* const llc_sap_action_t)(struct llc_sap *sap, struct sk_buff *skb);
 
 int llc_sap_action_unitdata_ind(struct llc_sap *sap, struct sk_buff *skb);
 int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb);
diff --git a/include/net/llc_s_st.h b/include/net/llc_s_st.h
index 567c681..cd73ac02 100644
--- a/include/net/llc_s_st.h
+++ b/include/net/llc_s_st.h
@@ -20,7 +20,7 @@ struct llc_sap_state_trans {
 	llc_sap_ev_t	  ev;
 	u8		  next_state;
 	llc_sap_action_t *ev_actions;
-};
+} __do_const;
 
 struct llc_sap_state {
 	u8			   curr_state;
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 421b6ec..5a03729 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -4588,7 +4588,7 @@ struct rate_control_ops {
 	void (*remove_sta_debugfs)(void *priv, void *priv_sta);
 
 	u32 (*get_expected_throughput)(void *priv_sta);
-};
+} __do_const;
 
 static inline int rate_supported(struct ieee80211_sta *sta,
 				 enum ieee80211_band band,
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 47f4254..fd095bc 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -163,7 +163,7 @@ struct neigh_ops {
 	void			(*error_report)(struct neighbour *, struct sk_buff *);
 	int			(*output)(struct neighbour *, struct sk_buff *);
 	int			(*connected_output)(struct neighbour *, struct sk_buff *);
-};
+} __do_const;
 
 struct pneigh_entry {
 	struct pneigh_entry	*next;
@@ -217,7 +217,7 @@ struct neigh_table {
 	struct neigh_statistics	__percpu *stats;
 	struct neigh_hash_table __rcu *nht;
 	struct pneigh_entry	**phash_buckets;
-};
+} __randomize_layout;
 
 static inline int neigh_parms_family(struct neigh_parms *p)
 {
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index 361d260..903d15f 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -129,8 +129,8 @@ struct net {
 	struct netns_ipvs	*ipvs;
 #endif
 	struct sock		*diag_nlsk;
-	atomic_t		fnhe_genid;
-};
+	atomic_unchecked_t	fnhe_genid;
+} __randomize_layout;
 
 #include <linux/seq_file_net.h>
 
@@ -286,7 +286,11 @@ static inline struct net *read_pnet(struct net * const *pnet)
 #define __net_init	__init
 #define __net_exit	__exit_refok
 #define __net_initdata	__initdata
+#ifdef CONSTIFY_PLUGIN
 #define __net_initconst	__initconst
+#else
+#define __net_initconst	__initdata
+#endif
 #endif
 
 struct pernet_operations {
@@ -296,7 +300,7 @@ struct pernet_operations {
 	void (*exit_batch)(struct list_head *net_exit_list);
 	int *id;
 	size_t size;
-};
+} __do_const;
 
 /*
  * Use these carefully.  If you implement a network device and it
@@ -344,23 +348,23 @@ static inline void unregister_net_sysctl_table(struct ctl_table_header *header)
 
 static inline int rt_genid_ipv4(struct net *net)
 {
-	return atomic_read(&net->ipv4.rt_genid);
+	return atomic_read_unchecked(&net->ipv4.rt_genid);
 }
 
 static inline void rt_genid_bump_ipv4(struct net *net)
 {
-	atomic_inc(&net->ipv4.rt_genid);
+	atomic_inc_unchecked(&net->ipv4.rt_genid);
 }
 
 #if IS_ENABLED(CONFIG_IPV6)
 static inline int rt_genid_ipv6(struct net *net)
 {
-	return atomic_read(&net->ipv6.rt_genid);
+	return atomic_read_unchecked(&net->ipv6.rt_genid);
 }
 
 static inline void rt_genid_bump_ipv6(struct net *net)
 {
-	atomic_inc(&net->ipv6.rt_genid);
+	atomic_inc_unchecked(&net->ipv6.rt_genid);
 }
 #else
 static inline int rt_genid_ipv6(struct net *net)
@@ -390,12 +394,12 @@ static inline void rt_genid_bump_all(struct net *net)
 
 static inline int fnhe_genid(struct net *net)
 {
-	return atomic_read(&net->fnhe_genid);
+	return atomic_read_unchecked(&net->fnhe_genid);
 }
 
 static inline void fnhe_genid_bump(struct net *net)
 {
-	atomic_inc(&net->fnhe_genid);
+	atomic_inc_unchecked(&net->fnhe_genid);
 }
 
 #endif /* __NET_NET_NAMESPACE_H */
diff --git a/include/net/netdma.h b/include/net/netdma.h
index 8ba8ce2..99b7fff 100644
--- a/include/net/netdma.h
+++ b/include/net/netdma.h
@@ -24,7 +24,7 @@
 #include <linux/dmaengine.h>
 #include <linux/skbuff.h>
 
-int dma_skb_copy_datagram_iovec(struct dma_chan* chan,
+int __intentional_overflow(3,5) dma_skb_copy_datagram_iovec(struct dma_chan* chan,
 		struct sk_buff *skb, int offset, struct iovec *to,
 		size_t len, struct dma_pinned_list *pinned_list);
 
diff --git a/include/net/netlink.h b/include/net/netlink.h
index 2b47eaa..6d5bcc2 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -521,7 +521,7 @@ static inline void *nlmsg_get_pos(struct sk_buff *skb)
 static inline void nlmsg_trim(struct sk_buff *skb, const void *mark)
 {
 	if (mark)
-		skb_trim(skb, (unsigned char *) mark - skb->data);
+		skb_trim(skb, (const unsigned char *) mark - skb->data);
 }
 
 /**
diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
index 773cce3..6a11852 100644
--- a/include/net/netns/conntrack.h
+++ b/include/net/netns/conntrack.h
@@ -13,10 +13,10 @@ struct nf_conntrack_ecache;
 struct nf_proto_net {
 #ifdef CONFIG_SYSCTL
 	struct ctl_table_header *ctl_table_header;
-	struct ctl_table        *ctl_table;
+	ctl_table_no_const      *ctl_table;
 #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
 	struct ctl_table_header *ctl_compat_header;
-	struct ctl_table        *ctl_compat_table;
+	ctl_table_no_const      *ctl_compat_table;
 #endif
 #endif
 	unsigned int		users;
@@ -59,7 +59,7 @@ struct nf_ip_net {
 	struct nf_icmp_net	icmpv6;
 #if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
 	struct ctl_table_header *ctl_table_header;
-	struct ctl_table	*ctl_table;
+	ctl_table_no_const	*ctl_table;
 #endif
 };
 
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index aec5e12..807233f 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -82,7 +82,7 @@ struct netns_ipv4 {
 
 	struct ping_group_range ping_group_range;
 
-	atomic_t dev_addr_genid;
+	atomic_unchecked_t dev_addr_genid;
 
 #ifdef CONFIG_SYSCTL
 	unsigned long *sysctl_local_reserved_ports;
@@ -96,6 +96,6 @@ struct netns_ipv4 {
 	struct fib_rules_ops	*mr_rules_ops;
 #endif
 #endif
-	atomic_t	rt_genid;
+	atomic_unchecked_t	rt_genid;
 };
 #endif
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index 19d3446..3c87195 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -74,8 +74,8 @@ struct netns_ipv6 {
 	struct fib_rules_ops	*mr6_rules_ops;
 #endif
 #endif
-	atomic_t		dev_addr_genid;
-	atomic_t		rt_genid;
+	atomic_unchecked_t	dev_addr_genid;
+	atomic_unchecked_t	rt_genid;
 };
 
 #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
index 3492434..209f58c 100644
--- a/include/net/netns/xfrm.h
+++ b/include/net/netns/xfrm.h
@@ -64,7 +64,7 @@ struct netns_xfrm {
 
 	/* flow cache part */
 	struct flow_cache	flow_cache_global;
-	atomic_t		flow_cache_genid;
+	atomic_unchecked_t	flow_cache_genid;
 	struct list_head	flow_cache_gc_list;
 	spinlock_t		flow_cache_gc_lock;
 	struct work_struct	flow_cache_gc_work;
diff --git a/include/net/ping.h b/include/net/ping.h
index 026479b..d9b2829 100644
--- a/include/net/ping.h
+++ b/include/net/ping.h
@@ -54,7 +54,7 @@ struct ping_iter_state {
 
 extern struct proto ping_prot;
 #if IS_ENABLED(CONFIG_IPV6)
-extern struct pingv6_ops pingv6_ops;
+extern struct pingv6_ops *pingv6_ops;
 #endif
 
 struct pingfakehdr {
diff --git a/include/net/protocol.h b/include/net/protocol.h
index d6fcc1f..ca277058 100644
--- a/include/net/protocol.h
+++ b/include/net/protocol.h
@@ -49,7 +49,7 @@ struct net_protocol {
 				 * socket lookup?
 				 */
 				icmp_strict_tag_validation:1;
-};
+} __do_const;
 
 #if IS_ENABLED(CONFIG_IPV6)
 struct inet6_protocol {
@@ -62,7 +62,7 @@ struct inet6_protocol {
 			       u8 type, u8 code, int offset,
 			       __be32 info);
 	unsigned int	flags;	/* INET6_PROTO_xxx */
-};
+} __do_const;
 
 #define INET6_PROTO_NOPOLICY	0x1
 #define INET6_PROTO_FINAL	0x2
diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
index 72240e5..8c14bef 100644
--- a/include/net/rtnetlink.h
+++ b/include/net/rtnetlink.h
@@ -93,7 +93,7 @@ struct rtnl_link_ops {
 	int			(*fill_slave_info)(struct sk_buff *skb,
 						   const struct net_device *dev,
 						   const struct net_device *slave_dev);
-};
+} __do_const;
 
 int __rtnl_link_register(struct rtnl_link_ops *ops);
 void __rtnl_link_unregister(struct rtnl_link_ops *ops);
diff --git a/include/net/sctp/checksum.h b/include/net/sctp/checksum.h
index 4a5b9a3..ca27d73 100644
--- a/include/net/sctp/checksum.h
+++ b/include/net/sctp/checksum.h
@@ -61,8 +61,8 @@ static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
 					unsigned int offset)
 {
 	struct sctphdr *sh = sctp_hdr(skb);
-        __le32 ret, old = sh->checksum;
-	const struct skb_checksum_ops ops = {
+	__le32 ret, old = sh->checksum;
+	static const struct skb_checksum_ops ops = {
 		.update  = sctp_csum_update,
 		.combine = sctp_csum_combine,
 	};
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index 7f4eeb3..37e8fe1 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -80,7 +80,7 @@ typedef void (sctp_timer_event_t) (unsigned long);
 typedef struct {
 	sctp_state_fn_t *fn;
 	const char *name;
-} sctp_sm_table_entry_t;
+} __do_const sctp_sm_table_entry_t;
 
 /* A naming convention of "sctp_sf_xxx" applies to all the state functions
  * currently in use.
@@ -292,7 +292,7 @@ __u32 sctp_generate_tag(const struct sctp_endpoint *);
 __u32 sctp_generate_tsn(const struct sctp_endpoint *);
 
 /* Extern declarations for major data structures.  */
-extern sctp_timer_event_t *sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES];
+extern sctp_timer_event_t * const sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES];
 
 
 /* Get the size of a DATA chunk payload. */
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index f38588bf..94c1795 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -507,7 +507,7 @@ struct sctp_pf {
 					  struct sctp_association *asoc);
 	void (*addr_v4map) (struct sctp_sock *, union sctp_addr *);
 	struct sctp_af *af;
-};
+} __do_const;
 
 
 /* Structure to track chunk fragments that have been acked, but peer
diff --git a/include/net/sock.h b/include/net/sock.h
index 1563507..20d5d0e 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -349,7 +349,7 @@ struct sock {
 	unsigned int		sk_napi_id;
 	unsigned int		sk_ll_usec;
 #endif
-	atomic_t		sk_drops;
+	atomic_unchecked_t	sk_drops;
 	int			sk_rcvbuf;
 
 	struct sk_filter __rcu	*sk_filter;
@@ -1038,7 +1038,7 @@ struct proto {
 	void			(*destroy_cgroup)(struct mem_cgroup *memcg);
 	struct cg_proto		*(*proto_cgroup)(struct mem_cgroup *memcg);
 #endif
-};
+} __randomize_layout;
 
 /*
  * Bits in struct cg_proto.flags
@@ -1225,7 +1225,7 @@ static inline u64 memcg_memory_allocated_read(struct cg_proto *prot)
 	return ret >> PAGE_SHIFT;
 }
 
-static inline long
+static inline long __intentional_overflow(-1)
 sk_memory_allocated(const struct sock *sk)
 {
 	struct proto *prot = sk->sk_prot;
@@ -1370,7 +1370,7 @@ struct sock_iocb {
 	struct scm_cookie	*scm;
 	struct msghdr		*msg, async_msg;
 	struct kiocb		*kiocb;
-};
+} __randomize_layout;
 
 static inline struct sock_iocb *kiocb_to_siocb(struct kiocb *iocb)
 {
@@ -1623,6 +1623,33 @@ void sk_common_release(struct sock *sk);
 /* Initialise core socket variables */
 void sock_init_data(struct socket *sock, struct sock *sk);
 
+void sk_filter_release_rcu(struct rcu_head *rcu);
+
+/**
+ *	sk_filter_release - release a socket filter
+ *	@fp: filter to remove
+ *
+ *	Remove a filter from a socket and release its resources.
+ */
+
+static inline void sk_filter_release(struct sk_filter *fp)
+{
+	if (atomic_dec_and_test(&fp->refcnt))
+		call_rcu(&fp->rcu, sk_filter_release_rcu);
+}
+
+static inline void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp)
+{
+	atomic_sub(sk_filter_size(fp->len), &sk->sk_omem_alloc);
+	sk_filter_release(fp);
+}
+
+static inline void sk_filter_charge(struct sock *sk, struct sk_filter *fp)
+{
+	atomic_inc(&fp->refcnt);
+	atomic_add(sk_filter_size(fp->len), &sk->sk_omem_alloc);
+}
+
 /*
  * Socket reference counting postulates.
  *
@@ -1805,7 +1832,7 @@ static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags)
 }
 
 static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb,
-					   char __user *from, char *to,
+					   char __user *from, unsigned char *to,
 					   int copy, int offset)
 {
 	if (skb->ip_summed == CHECKSUM_NONE) {
@@ -2067,7 +2094,7 @@ static inline void sk_stream_moderate_sndbuf(struct sock *sk)
 	}
 }
 
-struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp);
+struct sk_buff * __intentional_overflow(0) sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp);
 
 /**
  * sk_page_frag - return an appropriate page_frag
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 7286db8..f1aa7dc 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -535,7 +535,7 @@ void tcp_retransmit_timer(struct sock *sk);
 void tcp_xmit_retransmit_queue(struct sock *);
 void tcp_simple_retransmit(struct sock *);
 int tcp_trim_head(struct sock *, struct sk_buff *, u32);
-int tcp_fragment(struct sock *, struct sk_buff *, u32, unsigned int, gfp_t);
+int __intentional_overflow(3) tcp_fragment(struct sock *, struct sk_buff *, u32, unsigned int, gfp_t);
 
 void tcp_send_probe0(struct sock *);
 void tcp_send_partial(struct sock *);
@@ -708,8 +708,8 @@ struct tcp_skb_cb {
 		struct inet6_skb_parm	h6;
 #endif
 	} header;	/* For incoming frames		*/
-	__u32		seq;		/* Starting sequence number	*/
-	__u32		end_seq;	/* SEQ + FIN + SYN + datalen	*/
+	__u32		seq __intentional_overflow(0);	/* Starting sequence number	*/
+	__u32		end_seq __intentional_overflow(0);	/* SEQ + FIN + SYN + datalen	*/
 	__u32		when;		/* used to compute rtt's	*/
 	__u8		tcp_flags;	/* TCP header flags. (tcp[13])	*/
 
@@ -723,7 +723,7 @@ struct tcp_skb_cb {
 
 	__u8		ip_dsfield;	/* IPv4 tos or IPv6 dsfield	*/
 	/* 1 byte hole */
-	__u32		ack_seq;	/* Sequence number ACK'd	*/
+	__u32		ack_seq __intentional_overflow(0);	/* Sequence number ACK'd	*/
 };
 
 #define TCP_SKB_CB(__skb)	((struct tcp_skb_cb *)&((__skb)->cb[0]))
diff --git a/include/net/xfrm.h b/include/net/xfrm.h
index 721e9c3b..3c81bbf 100644
--- a/include/net/xfrm.h
+++ b/include/net/xfrm.h
@@ -285,7 +285,6 @@ struct xfrm_dst;
 struct xfrm_policy_afinfo {
 	unsigned short		family;
 	struct dst_ops		*dst_ops;
-	void			(*garbage_collect)(struct net *net);
 	struct dst_entry	*(*dst_lookup)(struct net *net, int tos,
 					       const xfrm_address_t *saddr,
 					       const xfrm_address_t *daddr);
@@ -303,7 +302,7 @@ struct xfrm_policy_afinfo {
 					    struct net_device *dev,
 					    const struct flowi *fl);
 	struct dst_entry	*(*blackhole_route)(struct net *net, struct dst_entry *orig);
-};
+} __do_const;
 
 int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
 int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo);
@@ -342,7 +341,7 @@ struct xfrm_state_afinfo {
 	int			(*transport_finish)(struct sk_buff *skb,
 						    int async);
 	void			(*local_error)(struct sk_buff *skb, u32 mtu);
-};
+} __do_const;
 
 int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo);
 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
@@ -437,7 +436,7 @@ struct xfrm_mode {
 	struct module *owner;
 	unsigned int encap;
 	int flags;
-};
+} __do_const;
 
 /* Flags for xfrm_mode. */
 enum {
@@ -534,7 +533,7 @@ struct xfrm_policy {
 	struct timer_list	timer;
 
 	struct flow_cache_object flo;
-	atomic_t		genid;
+	atomic_unchecked_t	genid;
 	u32			priority;
 	u32			index;
 	struct xfrm_mark	mark;
@@ -1167,6 +1166,7 @@ static inline void xfrm_sk_free_policy(struct sock *sk)
 }
 
 void xfrm_garbage_collect(struct net *net);
+void xfrm_garbage_collect_deferred(struct net *net);
 
 #else
 
@@ -1205,6 +1205,9 @@ static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
 static inline void xfrm_garbage_collect(struct net *net)
 {
 }
+static inline void xfrm_garbage_collect_deferred(struct net *net)
+{
+}
 #endif
 
 static __inline__
diff --git a/include/rdma/iw_cm.h b/include/rdma/iw_cm.h
index 1017e0b..227aa4d 100644
--- a/include/rdma/iw_cm.h
+++ b/include/rdma/iw_cm.h
@@ -122,7 +122,7 @@ struct iw_cm_verbs {
 					 int backlog);
 
 	int		(*destroy_listen)(struct iw_cm_id *cm_id);
-};
+} __no_const;
 
 /**
  * iw_create_cm_id - Create an IW CM identifier.
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 52beadf..598734c 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -771,6 +771,7 @@ struct libfc_function_template {
 	 */
 	void (*disc_stop_final) (struct fc_lport *);
 };
+typedef struct libfc_function_template __no_const libfc_function_template_no_const;
 
 /**
  * struct fc_disc - Discovery context
@@ -875,7 +876,7 @@ struct fc_lport {
 	struct fc_vport		       *vport;
 
 	/* Operational Information */
-	struct libfc_function_template tt;
+	libfc_function_template_no_const tt;
 	u8			       link_up;
 	u8			       qfull;
 	enum fc_lport_state	       state;
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
index 758bc9f..9b14934 100644
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -188,9 +188,9 @@ struct scsi_device {
 	unsigned int max_device_blocked; /* what device_blocked counts down from  */
 #define SCSI_DEFAULT_DEVICE_BLOCKED	3
 
-	atomic_t iorequest_cnt;
-	atomic_t iodone_cnt;
-	atomic_t ioerr_cnt;
+	atomic_unchecked_t iorequest_cnt;
+	atomic_unchecked_t iodone_cnt;
+	atomic_unchecked_t ioerr_cnt;
 
 	struct device		sdev_gendev,
 				sdev_dev;
diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
index 8c79980..723f6f9 100644
--- a/include/scsi/scsi_transport_fc.h
+++ b/include/scsi/scsi_transport_fc.h
@@ -752,7 +752,8 @@ struct fc_function_template {
 	unsigned long	show_host_system_hostname:1;
 
 	unsigned long	disable_target_scan:1;
-};
+} __do_const;
+typedef struct fc_function_template __no_const fc_function_template_no_const;
 
 
 /**
diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h
index ae6c3b8..fd748ac 100644
--- a/include/sound/compress_driver.h
+++ b/include/sound/compress_driver.h
@@ -128,7 +128,7 @@ struct snd_compr_ops {
 			struct snd_compr_caps *caps);
 	int (*get_codec_caps) (struct snd_compr_stream *stream,
 			struct snd_compr_codec_caps *codec);
-};
+} __no_const;
 
 /**
  * struct snd_compr: Compressed device
diff --git a/include/sound/soc.h b/include/sound/soc.h
index ed9e2d7..aad0887 100644
--- a/include/sound/soc.h
+++ b/include/sound/soc.h
@@ -798,7 +798,7 @@ struct snd_soc_codec_driver {
 	/* probe ordering - for components with runtime dependencies */
 	int probe_order;
 	int remove_order;
-};
+} __do_const;
 
 /* SoC platform interface */
 struct snd_soc_platform_driver {
@@ -845,7 +845,7 @@ struct snd_soc_platform_driver {
 	unsigned int (*read)(struct snd_soc_platform *, unsigned int);
 	int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
 	int (*bespoke_trigger)(struct snd_pcm_substream *, int);
-};
+} __do_const;
 
 struct snd_soc_platform {
 	const char *name;
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
index 9ec9864..e2ee1ee 100644
--- a/include/target/target_core_base.h
+++ b/include/target/target_core_base.h
@@ -761,7 +761,7 @@ struct se_device {
 	atomic_long_t		write_bytes;
 	/* Active commands on this virtual SE device */
 	atomic_t		simple_cmds;
-	atomic_t		dev_ordered_id;
+	atomic_unchecked_t	dev_ordered_id;
 	atomic_t		dev_ordered_sync;
 	atomic_t		dev_qf_count;
 	int			export_count;
diff --git a/include/trace/events/fs.h b/include/trace/events/fs.h
new file mode 100644
index 0000000..fb634b7
--- /dev/null
+++ b/include/trace/events/fs.h
@@ -0,0 +1,53 @@
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM fs
+
+#if !defined(_TRACE_FS_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_FS_H
+
+#include <linux/fs.h>
+#include <linux/tracepoint.h>
+
+TRACE_EVENT(do_sys_open,
+
+	TP_PROTO(const char *filename, int flags, int mode),
+
+	TP_ARGS(filename, flags, mode),
+
+	TP_STRUCT__entry(
+		__string(	filename, filename		)
+		__field(	int, flags			)
+		__field(	int, mode			)
+	),
+
+	TP_fast_assign(
+		__assign_str(filename, filename);
+		__entry->flags = flags;
+		__entry->mode = mode;
+	),
+
+	TP_printk("\"%s\" %x %o",
+		  __get_str(filename), __entry->flags, __entry->mode)
+);
+
+TRACE_EVENT(open_exec,
+
+	TP_PROTO(const char *filename),
+
+	TP_ARGS(filename),
+
+	TP_STRUCT__entry(
+		__string(	filename, filename		)
+	),
+
+	TP_fast_assign(
+		__assign_str(filename, filename);
+	),
+
+	TP_printk("\"%s\"",
+		  __get_str(filename))
+);
+
+#endif /* _TRACE_FS_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
index 1c09820..7f5ec79 100644
--- a/include/trace/events/irq.h
+++ b/include/trace/events/irq.h
@@ -36,7 +36,7 @@ struct softirq_action;
  */
 TRACE_EVENT(irq_handler_entry,
 
-	TP_PROTO(int irq, struct irqaction *action),
+	TP_PROTO(int irq, const struct irqaction *action),
 
 	TP_ARGS(irq, action),
 
@@ -66,7 +66,7 @@ TRACE_EVENT(irq_handler_entry,
  */
 TRACE_EVENT(irq_handler_exit,
 
-	TP_PROTO(int irq, struct irqaction *action, int ret),
+	TP_PROTO(int irq, const struct irqaction *action, int ret),
 
 	TP_ARGS(irq, action, ret),
 
diff --git a/include/uapi/linux/a.out.h b/include/uapi/linux/a.out.h
index 7caf44c..23c6f27 100644
--- a/include/uapi/linux/a.out.h
+++ b/include/uapi/linux/a.out.h
@@ -39,6 +39,14 @@ enum machine_type {
   M_MIPS2 = 152		/* MIPS R6000/R4000 binary */
 };
 
+/* Constants for the N_FLAGS field */
+#define F_PAX_PAGEEXEC	1	/* Paging based non-executable pages */
+#define F_PAX_EMUTRAMP	2	/* Emulate trampolines */
+#define F_PAX_MPROTECT	4	/* Restrict mprotect() */
+#define F_PAX_RANDMMAP	8	/* Randomize mmap() base */
+/*#define F_PAX_RANDEXEC	16*/	/* Randomize ET_EXEC base */
+#define F_PAX_SEGMEXEC	32	/* Segmentation based non-executable pages */
+
 #if !defined (N_MAGIC)
 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
 #endif
diff --git a/include/uapi/linux/bcache.h b/include/uapi/linux/bcache.h
index 22b6ad3..aeba37e 100644
--- a/include/uapi/linux/bcache.h
+++ b/include/uapi/linux/bcache.h
@@ -5,6 +5,7 @@
  * Bcache on disk data structures
  */
 
+#include <linux/compiler.h>
 #include <asm/types.h>
 
 #define BITMASK(name, type, field, offset, size)		\
@@ -20,8 +21,8 @@ static inline void SET_##name(type *k, __u64 v)			\
 /* Btree keys - all units are in sectors */
 
 struct bkey {
-	__u64	high;
-	__u64	low;
+	__u64	high __intentional_overflow(-1);
+	__u64	low __intentional_overflow(-1);
 	__u64	ptr[];
 };
 
diff --git a/include/uapi/linux/byteorder/little_endian.h b/include/uapi/linux/byteorder/little_endian.h
index d876736..ccce5c0 100644
--- a/include/uapi/linux/byteorder/little_endian.h
+++ b/include/uapi/linux/byteorder/little_endian.h
@@ -42,51 +42,51 @@
 
 static inline __le64 __cpu_to_le64p(const __u64 *p)
 {
-	return (__force __le64)*p;
+	return (__force const __le64)*p;
 }
-static inline __u64 __le64_to_cpup(const __le64 *p)
+static inline __u64 __intentional_overflow(-1) __le64_to_cpup(const __le64 *p)
 {
-	return (__force __u64)*p;
+	return (__force const __u64)*p;
 }
 static inline __le32 __cpu_to_le32p(const __u32 *p)
 {
-	return (__force __le32)*p;
+	return (__force const __le32)*p;
 }
 static inline __u32 __le32_to_cpup(const __le32 *p)
 {
-	return (__force __u32)*p;
+	return (__force const __u32)*p;
 }
 static inline __le16 __cpu_to_le16p(const __u16 *p)
 {
-	return (__force __le16)*p;
+	return (__force const __le16)*p;
 }
 static inline __u16 __le16_to_cpup(const __le16 *p)
 {
-	return (__force __u16)*p;
+	return (__force const __u16)*p;
 }
 static inline __be64 __cpu_to_be64p(const __u64 *p)
 {
-	return (__force __be64)__swab64p(p);
+	return (__force const __be64)__swab64p(p);
 }
 static inline __u64 __be64_to_cpup(const __be64 *p)
 {
-	return __swab64p((__u64 *)p);
+	return __swab64p((const __u64 *)p);
 }
 static inline __be32 __cpu_to_be32p(const __u32 *p)
 {
-	return (__force __be32)__swab32p(p);
+	return (__force const __be32)__swab32p(p);
 }
-static inline __u32 __be32_to_cpup(const __be32 *p)
+static inline __u32 __intentional_overflow(-1) __be32_to_cpup(const __be32 *p)
 {
-	return __swab32p((__u32 *)p);
+	return __swab32p((const __u32 *)p);
 }
 static inline __be16 __cpu_to_be16p(const __u16 *p)
 {
-	return (__force __be16)__swab16p(p);
+	return (__force const __be16)__swab16p(p);
 }
 static inline __u16 __be16_to_cpup(const __be16 *p)
 {
-	return __swab16p((__u16 *)p);
+	return __swab16p((const __u16 *)p);
 }
 #define __cpu_to_le64s(x) do { (void)(x); } while (0)
 #define __le64_to_cpus(x) do { (void)(x); } while (0)
diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
index ef6103b..d4e65dd 100644
--- a/include/uapi/linux/elf.h
+++ b/include/uapi/linux/elf.h
@@ -37,6 +37,17 @@ typedef __s64	Elf64_Sxword;
 #define PT_GNU_EH_FRAME		0x6474e550
 
 #define PT_GNU_STACK	(PT_LOOS + 0x474e551)
+#define PT_GNU_RELRO	(PT_LOOS + 0x474e552)
+
+#define PT_PAX_FLAGS	(PT_LOOS + 0x5041580)
+
+/* Constants for the e_flags field */
+#define EF_PAX_PAGEEXEC		1	/* Paging based non-executable pages */
+#define EF_PAX_EMUTRAMP		2	/* Emulate trampolines */
+#define EF_PAX_MPROTECT		4	/* Restrict mprotect() */
+#define EF_PAX_RANDMMAP		8	/* Randomize mmap() base */
+/*#define EF_PAX_RANDEXEC		16*/	/* Randomize ET_EXEC base */
+#define EF_PAX_SEGMEXEC		32	/* Segmentation based non-executable pages */
 
 /*
  * Extended Numbering
@@ -94,6 +105,8 @@ typedef __s64	Elf64_Sxword;
 #define DT_DEBUG	21
 #define DT_TEXTREL	22
 #define DT_JMPREL	23
+#define DT_FLAGS	30
+  #define DF_TEXTREL  0x00000004
 #define DT_ENCODING	32
 #define OLD_DT_LOOS	0x60000000
 #define DT_LOOS		0x6000000d
@@ -240,6 +253,19 @@ typedef struct elf64_hdr {
 #define PF_W		0x2
 #define PF_X		0x1
 
+#define PF_PAGEEXEC	(1U << 4)	/* Enable  PAGEEXEC */
+#define PF_NOPAGEEXEC	(1U << 5)	/* Disable PAGEEXEC */
+#define PF_SEGMEXEC	(1U << 6)	/* Enable  SEGMEXEC */
+#define PF_NOSEGMEXEC	(1U << 7)	/* Disable SEGMEXEC */
+#define PF_MPROTECT	(1U << 8)	/* Enable  MPROTECT */
+#define PF_NOMPROTECT	(1U << 9)	/* Disable MPROTECT */
+/*#define PF_RANDEXEC	(1U << 10)*/	/* Enable  RANDEXEC */
+/*#define PF_NORANDEXEC	(1U << 11)*/	/* Disable RANDEXEC */
+#define PF_EMUTRAMP	(1U << 12)	/* Enable  EMUTRAMP */
+#define PF_NOEMUTRAMP	(1U << 13)	/* Disable EMUTRAMP */
+#define PF_RANDMMAP	(1U << 14)	/* Enable  RANDMMAP */
+#define PF_NORANDMMAP	(1U << 15)	/* Disable RANDMMAP */
+
 typedef struct elf32_phdr{
   Elf32_Word	p_type;
   Elf32_Off	p_offset;
@@ -332,6 +358,8 @@ typedef struct elf64_shdr {
 #define	EI_OSABI	7
 #define	EI_PAD		8
 
+#define	EI_PAX		14
+
 #define	ELFMAG0		0x7f		/* EI_MAG */
 #define	ELFMAG1		'E'
 #define	ELFMAG2		'L'
diff --git a/include/uapi/linux/personality.h b/include/uapi/linux/personality.h
index aa169c4..6a2771d 100644
--- a/include/uapi/linux/personality.h
+++ b/include/uapi/linux/personality.h
@@ -30,6 +30,7 @@ enum {
 #define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC  | \
 			    ADDR_NO_RANDOMIZE  | \
 			    ADDR_COMPAT_LAYOUT | \
+			    ADDR_LIMIT_3GB     | \
 			    MMAP_PAGE_ZERO)
 
 /*
diff --git a/include/uapi/linux/screen_info.h b/include/uapi/linux/screen_info.h
index 7530e74..e714828 100644
--- a/include/uapi/linux/screen_info.h
+++ b/include/uapi/linux/screen_info.h
@@ -43,7 +43,8 @@ struct screen_info {
 	__u16 pages;		/* 0x32 */
 	__u16 vesa_attributes;	/* 0x34 */
 	__u32 capabilities;     /* 0x36 */
-	__u8  _reserved[6];	/* 0x3a */
+	__u16 vesapm_size;	/* 0x3a */
+	__u8  _reserved[4];	/* 0x3c */
 } __attribute__((packed));
 
 #define VIDEO_TYPE_MDA		0x10	/* Monochrome Text Display	*/
diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 0e011eb..82681b1 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -43,7 +43,7 @@
  * ___swab16, ___swab32, ___swab64, ___swahw32, ___swahb32
  */
 
-static inline __attribute_const__ __u16 __fswab16(__u16 val)
+static inline __intentional_overflow(-1) __attribute_const__ __u16 __fswab16(__u16 val)
 {
 #ifdef __HAVE_BUILTIN_BSWAP16__
 	return __builtin_bswap16(val);
@@ -54,7 +54,7 @@ static inline __attribute_const__ __u16 __fswab16(__u16 val)
 #endif
 }
 
-static inline __attribute_const__ __u32 __fswab32(__u32 val)
+static inline __intentional_overflow(-1) __attribute_const__ __u32 __fswab32(__u32 val)
 {
 #ifdef __HAVE_BUILTIN_BSWAP32__
 	return __builtin_bswap32(val);
@@ -65,7 +65,7 @@ static inline __attribute_const__ __u32 __fswab32(__u32 val)
 #endif
 }
 
-static inline __attribute_const__ __u64 __fswab64(__u64 val)
+static inline __intentional_overflow(-1) __attribute_const__ __u64 __fswab64(__u64 val)
 {
 #ifdef __HAVE_BUILTIN_BSWAP64__
 	return __builtin_bswap64(val);
diff --git a/include/uapi/linux/sysctl.h b/include/uapi/linux/sysctl.h
index 6d67213..552fdd9 100644
--- a/include/uapi/linux/sysctl.h
+++ b/include/uapi/linux/sysctl.h
@@ -155,8 +155,6 @@ enum
 	KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
 };
 
-
-
 /* CTL_VM names: */
 enum
 {
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 168ff50..a921df2 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1253,7 +1253,7 @@ struct v4l2_ext_control {
 	union {
 		__s32 value;
 		__s64 value64;
-		char *string;
+		char __user *string;
 	};
 } __attribute__ ((packed));
 
diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h
index c38355c..17a57bc 100644
--- a/include/uapi/linux/xattr.h
+++ b/include/uapi/linux/xattr.h
@@ -73,5 +73,9 @@
 #define XATTR_POSIX_ACL_DEFAULT  "posix_acl_default"
 #define XATTR_NAME_POSIX_ACL_DEFAULT XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_DEFAULT
 
+/* User namespace */
+#define XATTR_PAX_PREFIX XATTR_USER_PREFIX "pax."
+#define XATTR_PAX_FLAGS_SUFFIX "flags"
+#define XATTR_NAME_PAX_FLAGS XATTR_PAX_PREFIX XATTR_PAX_FLAGS_SUFFIX
 
 #endif /* _UAPI_LINUX_XATTR_H */
diff --git a/include/video/udlfb.h b/include/video/udlfb.h
index f9466fa..f4e2b81 100644
--- a/include/video/udlfb.h
+++ b/include/video/udlfb.h
@@ -53,10 +53,10 @@ struct dlfb_data {
 	u32 pseudo_palette[256];
 	int blank_mode; /*one of FB_BLANK_ */
 	/* blit-only rendering path metrics, exposed through sysfs */
-	atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
-	atomic_t bytes_identical; /* saved effort with backbuffer comparison */
-	atomic_t bytes_sent; /* to usb, after compression including overhead */
-	atomic_t cpu_kcycles_used; /* transpired during pixel processing */
+	atomic_unchecked_t bytes_rendered; /* raw pixel-bytes driver asked to render */
+	atomic_unchecked_t bytes_identical; /* saved effort with backbuffer comparison */
+	atomic_unchecked_t bytes_sent; /* to usb, after compression including overhead */
+	atomic_unchecked_t cpu_kcycles_used; /* transpired during pixel processing */
 };
 
 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
diff --git a/include/video/uvesafb.h b/include/video/uvesafb.h
index 30f5362..8ed8ac9 100644
--- a/include/video/uvesafb.h
+++ b/include/video/uvesafb.h
@@ -122,6 +122,7 @@ struct uvesafb_par {
 	u8 ypan;			/* 0 - nothing, 1 - ypan, 2 - ywrap */
 	u8 pmi_setpal;			/* PMI for palette changes */
 	u16 *pmi_base;			/* protected mode interface location */
+	u8 *pmi_code;			/* protected mode code location */
 	void *pmi_start;
 	void *pmi_pal;
 	u8 *vbe_state_orig;		/*
diff --git a/init/Kconfig b/init/Kconfig
index 9d76b99..d378b1e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1105,6 +1105,7 @@ endif # CGROUPS
 
 config CHECKPOINT_RESTORE
 	bool "Checkpoint/restore support" if EXPERT
+	depends on !GRKERNSEC
 	default n
 	help
 	  Enables additional kernel features in a sake of checkpoint/restore.
@@ -1589,7 +1590,7 @@ config SLUB_DEBUG
 
 config COMPAT_BRK
 	bool "Disable heap randomization"
-	default y
+	default n
 	help
 	  Randomizing heap placement makes heap exploits harder, but it
 	  also breaks ancient binaries (including anything libc5 based).
@@ -1877,7 +1878,7 @@ config INIT_ALL_POSSIBLE
 config STOP_MACHINE
 	bool
 	default y
-	depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU
+	depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU || GRKERNSEC
 	help
 	  Need stop_machine() primitive.
 
diff --git a/init/Makefile b/init/Makefile
index 7bc47ee..6da2dc7 100644
--- a/init/Makefile
+++ b/init/Makefile
@@ -2,6 +2,9 @@
 # Makefile for the linux kernel.
 #
 
+ccflags-y := $(GCC_PLUGINS_CFLAGS)
+asflags-y := $(GCC_PLUGINS_AFLAGS)
+
 obj-y                          := main.o version.o mounts.o
 ifneq ($(CONFIG_BLK_DEV_INITRD),y)
 obj-y                          += noinitramfs.o
diff --git a/init/do_mounts.c b/init/do_mounts.c
index 82f2288..ea1430a 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -359,11 +359,11 @@ static void __init get_fs_names(char *page)
 static int __init do_mount_root(char *name, char *fs, int flags, void *data)
 {
 	struct super_block *s;
-	int err = sys_mount(name, "/root", fs, flags, data);
+	int err = sys_mount((char __force_user *)name, (char __force_user *)"/root", (char __force_user *)fs, flags, (void __force_user *)data);
 	if (err)
 		return err;
 
-	sys_chdir("/root");
+	sys_chdir((const char __force_user *)"/root");
 	s = current->fs->pwd.dentry->d_sb;
 	ROOT_DEV = s->s_dev;
 	printk(KERN_INFO
@@ -484,18 +484,18 @@ void __init change_floppy(char *fmt, ...)
 	va_start(args, fmt);
 	vsprintf(buf, fmt, args);
 	va_end(args);
-	fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0);
+	fd = sys_open((char __user *)"/dev/root", O_RDWR | O_NDELAY, 0);
 	if (fd >= 0) {
 		sys_ioctl(fd, FDEJECT, 0);
 		sys_close(fd);
 	}
 	printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
-	fd = sys_open("/dev/console", O_RDWR, 0);
+	fd = sys_open((__force const char __user *)"/dev/console", O_RDWR, 0);
 	if (fd >= 0) {
 		sys_ioctl(fd, TCGETS, (long)&termios);
 		termios.c_lflag &= ~ICANON;
 		sys_ioctl(fd, TCSETSF, (long)&termios);
-		sys_read(fd, &c, 1);
+		sys_read(fd, (char __user *)&c, 1);
 		termios.c_lflag |= ICANON;
 		sys_ioctl(fd, TCSETSF, (long)&termios);
 		sys_close(fd);
@@ -589,8 +589,8 @@ void __init prepare_namespace(void)
 	mount_root();
 out:
 	devtmpfs_mount("dev");
-	sys_mount(".", "/", NULL, MS_MOVE, NULL);
-	sys_chroot(".");
+	sys_mount((char __force_user *)".", (char __force_user *)"/", NULL, MS_MOVE, NULL);
+	sys_chroot((const char __force_user *)".");
 }
 
 static bool is_tmpfs;
diff --git a/init/do_mounts.h b/init/do_mounts.h
index f5b978a..69dbfe8 100644
--- a/init/do_mounts.h
+++ b/init/do_mounts.h
@@ -15,15 +15,15 @@ extern int root_mountflags;
 
 static inline int create_dev(char *name, dev_t dev)
 {
-	sys_unlink(name);
-	return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
+	sys_unlink((char __force_user *)name);
+	return sys_mknod((char __force_user *)name, S_IFBLK|0600, new_encode_dev(dev));
 }
 
 #if BITS_PER_LONG == 32
 static inline u32 bstat(char *name)
 {
 	struct stat64 stat;
-	if (sys_stat64(name, &stat) != 0)
+	if (sys_stat64((char __force_user *)name, (struct stat64 __force_user *)&stat) != 0)
 		return 0;
 	if (!S_ISBLK(stat.st_mode))
 		return 0;
@@ -35,7 +35,7 @@ static inline u32 bstat(char *name)
 static inline u32 bstat(char *name)
 {
 	struct stat stat;
-	if (sys_newstat(name, &stat) != 0)
+	if (sys_newstat((const char __force_user *)name, (struct stat __force_user *)&stat) != 0)
 		return 0;
 	if (!S_ISBLK(stat.st_mode))
 		return 0;
diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
index 3e0878e..8a9d7a0 100644
--- a/init/do_mounts_initrd.c
+++ b/init/do_mounts_initrd.c
@@ -37,13 +37,13 @@ static int init_linuxrc(struct subprocess_info *info, struct cred *new)
 {
 	sys_unshare(CLONE_FS | CLONE_FILES);
 	/* stdin/stdout/stderr for /linuxrc */
-	sys_open("/dev/console", O_RDWR, 0);
+	sys_open((const char __force_user *)"/dev/console", O_RDWR, 0);
 	sys_dup(0);
 	sys_dup(0);
 	/* move initrd over / and chdir/chroot in initrd root */
-	sys_chdir("/root");
-	sys_mount(".", "/", NULL, MS_MOVE, NULL);
-	sys_chroot(".");
+	sys_chdir((const char __force_user *)"/root");
+	sys_mount((char __force_user *)".", (char __force_user *)"/", NULL, MS_MOVE, NULL);
+	sys_chroot((const char __force_user *)".");
 	sys_setsid();
 	return 0;
 }
@@ -59,8 +59,8 @@ static void __init handle_initrd(void)
 	create_dev("/dev/root.old", Root_RAM0);
 	/* mount initrd on rootfs' /root */
 	mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY);
-	sys_mkdir("/old", 0700);
-	sys_chdir("/old");
+	sys_mkdir((const char __force_user *)"/old", 0700);
+	sys_chdir((const char __force_user *)"/old");
 
 	/* try loading default modules from initrd */
 	load_default_modules();
@@ -80,31 +80,31 @@ static void __init handle_initrd(void)
 	current->flags &= ~PF_FREEZER_SKIP;
 
 	/* move initrd to rootfs' /old */
-	sys_mount("..", ".", NULL, MS_MOVE, NULL);
+	sys_mount((char __force_user *)"..", (char __force_user *)".", NULL, MS_MOVE, NULL);
 	/* switch root and cwd back to / of rootfs */
-	sys_chroot("..");
+	sys_chroot((const char __force_user *)"..");
 
 	if (new_decode_dev(real_root_dev) == Root_RAM0) {
-		sys_chdir("/old");
+		sys_chdir((const char __force_user *)"/old");
 		return;
 	}
 
-	sys_chdir("/");
+	sys_chdir((const char __force_user *)"/");
 	ROOT_DEV = new_decode_dev(real_root_dev);
 	mount_root();
 
 	printk(KERN_NOTICE "Trying to move old root to /initrd ... ");
-	error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL);
+	error = sys_mount((char __force_user *)"/old", (char __force_user *)"/root/initrd", NULL, MS_MOVE, NULL);
 	if (!error)
 		printk("okay\n");
 	else {
-		int fd = sys_open("/dev/root.old", O_RDWR, 0);
+		int fd = sys_open((const char __force_user *)"/dev/root.old", O_RDWR, 0);
 		if (error == -ENOENT)
 			printk("/initrd does not exist. Ignored.\n");
 		else
 			printk("failed\n");
 		printk(KERN_NOTICE "Unmounting old root\n");
-		sys_umount("/old", MNT_DETACH);
+		sys_umount((char __force_user *)"/old", MNT_DETACH);
 		printk(KERN_NOTICE "Trying to free ramdisk memory ... ");
 		if (fd < 0) {
 			error = fd;
@@ -127,11 +127,11 @@ int __init initrd_load(void)
 		 * mounted in the normal path.
 		 */
 		if (rd_load_image("/initrd.image") && ROOT_DEV != Root_RAM0) {
-			sys_unlink("/initrd.image");
+			sys_unlink((const char __force_user *)"/initrd.image");
 			handle_initrd();
 			return 1;
 		}
 	}
-	sys_unlink("/initrd.image");
+	sys_unlink((const char __force_user *)"/initrd.image");
 	return 0;
 }
diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
index 8cb6db5..d729f50 100644
--- a/init/do_mounts_md.c
+++ b/init/do_mounts_md.c
@@ -180,7 +180,7 @@ static void __init md_setup_drive(void)
 			partitioned ? "_d" : "", minor,
 			md_setup_args[ent].device_names);
 
-		fd = sys_open(name, 0, 0);
+		fd = sys_open((char __force_user *)name, 0, 0);
 		if (fd < 0) {
 			printk(KERN_ERR "md: open failed - cannot start "
 					"array %s\n", name);
@@ -243,7 +243,7 @@ static void __init md_setup_drive(void)
 			 * array without it
 			 */
 			sys_close(fd);
-			fd = sys_open(name, 0, 0);
+			fd = sys_open((char __force_user *)name, 0, 0);
 			sys_ioctl(fd, BLKRRPART, 0);
 		}
 		sys_close(fd);
@@ -293,7 +293,7 @@ static void __init autodetect_raid(void)
 
 	wait_for_device_probe();
 
-	fd = sys_open("/dev/md0", 0, 0);
+	fd = sys_open((const char __force_user *) "/dev/md0", 0, 0);
 	if (fd >= 0) {
 		sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
 		sys_close(fd);
diff --git a/init/init_task.c b/init/init_task.c
index ba0a7f36..2bcf1d5 100644
--- a/init/init_task.c
+++ b/init/init_task.c
@@ -22,5 +22,9 @@ EXPORT_SYMBOL(init_task);
  * Initial thread structure. Alignment of this is handled by a special
  * linker map entry.
  */
+#ifdef CONFIG_X86
+union thread_union init_thread_union __init_task_data;
+#else
 union thread_union init_thread_union __init_task_data =
 	{ INIT_THREAD_INFO(init_task) };
+#endif
diff --git a/init/initramfs.c b/init/initramfs.c
index a8497fa..35b3c90 100644
--- a/init/initramfs.c
+++ b/init/initramfs.c
@@ -84,7 +84,7 @@ static void __init free_hash(void)
 	}
 }
 
-static long __init do_utime(char *filename, time_t mtime)
+static long __init do_utime(char __force_user *filename, time_t mtime)
 {
 	struct timespec t[2];
 
@@ -119,7 +119,7 @@ static void __init dir_utime(void)
 	struct dir_entry *de, *tmp;
 	list_for_each_entry_safe(de, tmp, &dir_list, list) {
 		list_del(&de->list);
-		do_utime(de->name, de->mtime);
+		do_utime((char __force_user *)de->name, de->mtime);
 		kfree(de->name);
 		kfree(de);
 	}
@@ -281,7 +281,7 @@ static int __init maybe_link(void)
 	if (nlink >= 2) {
 		char *old = find_link(major, minor, ino, mode, collected);
 		if (old)
-			return (sys_link(old, collected) < 0) ? -1 : 1;
+			return (sys_link((char __force_user *)old, (char __force_user *)collected) < 0) ? -1 : 1;
 	}
 	return 0;
 }
@@ -290,11 +290,11 @@ static void __init clean_path(char *path, umode_t mode)
 {
 	struct stat st;
 
-	if (!sys_newlstat(path, &st) && (st.st_mode^mode) & S_IFMT) {
+	if (!sys_newlstat((char __force_user *)path, (struct stat __force_user *)&st) && (st.st_mode^mode) & S_IFMT) {
 		if (S_ISDIR(st.st_mode))
-			sys_rmdir(path);
+			sys_rmdir((char __force_user *)path);
 		else
-			sys_unlink(path);
+			sys_unlink((char __force_user *)path);
 	}
 }
 
@@ -315,7 +315,7 @@ static int __init do_name(void)
 			int openflags = O_WRONLY|O_CREAT;
 			if (ml != 1)
 				openflags |= O_TRUNC;
-			wfd = sys_open(collected, openflags, mode);
+			wfd = sys_open((char __force_user *)collected, openflags, mode);
 
 			if (wfd >= 0) {
 				sys_fchown(wfd, uid, gid);
@@ -327,17 +327,17 @@ static int __init do_name(void)
 			}
 		}
 	} else if (S_ISDIR(mode)) {
-		sys_mkdir(collected, mode);
-		sys_chown(collected, uid, gid);
-		sys_chmod(collected, mode);
+		sys_mkdir((char __force_user *)collected, mode);
+		sys_chown((char __force_user *)collected, uid, gid);
+		sys_chmod((char __force_user *)collected, mode);
 		dir_add(collected, mtime);
 	} else if (S_ISBLK(mode) || S_ISCHR(mode) ||
 		   S_ISFIFO(mode) || S_ISSOCK(mode)) {
 		if (maybe_link() == 0) {
-			sys_mknod(collected, mode, rdev);
-			sys_chown(collected, uid, gid);
-			sys_chmod(collected, mode);
-			do_utime(collected, mtime);
+			sys_mknod((char __force_user *)collected, mode, rdev);
+			sys_chown((char __force_user *)collected, uid, gid);
+			sys_chmod((char __force_user *)collected, mode);
+			do_utime((char __force_user *)collected, mtime);
 		}
 	}
 	return 0;
@@ -346,15 +346,15 @@ static int __init do_name(void)
 static int __init do_copy(void)
 {
 	if (count >= body_len) {
-		sys_write(wfd, victim, body_len);
+		sys_write(wfd, (char __force_user *)victim, body_len);
 		sys_close(wfd);
-		do_utime(vcollected, mtime);
+		do_utime((char __force_user *)vcollected, mtime);
 		kfree(vcollected);
 		eat(body_len);
 		state = SkipIt;
 		return 0;
 	} else {
-		sys_write(wfd, victim, count);
+		sys_write(wfd, (char __force_user *)victim, count);
 		body_len -= count;
 		eat(count);
 		return 1;
@@ -365,9 +365,9 @@ static int __init do_symlink(void)
 {
 	collected[N_ALIGN(name_len) + body_len] = '\0';
 	clean_path(collected, 0);
-	sys_symlink(collected + N_ALIGN(name_len), collected);
-	sys_lchown(collected, uid, gid);
-	do_utime(collected, mtime);
+	sys_symlink((char __force_user *)collected + N_ALIGN(name_len), (char __force_user *)collected);
+	sys_lchown((char __force_user *)collected, uid, gid);
+	do_utime((char __force_user *)collected, mtime);
 	state = SkipIt;
 	next_state = Reset;
 	return 0;
diff --git a/init/main.c b/init/main.c
index e8ae1fe..f60f98c 100644
--- a/init/main.c
+++ b/init/main.c
@@ -98,6 +98,8 @@ extern void radix_tree_init(void);
 static inline void mark_rodata_ro(void) { }
 #endif
 
+extern void grsecurity_init(void);
+
 /*
  * Debug helper: via this flag we know that we are in 'early bootup code'
  * where only the boot processor is running with IRQ disabled.  This means
@@ -159,6 +161,75 @@ static int __init set_reset_devices(char *str)
 
 __setup("reset_devices", set_reset_devices);
 
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+kgid_t grsec_proc_gid = KGIDT_INIT(CONFIG_GRKERNSEC_PROC_GID);
+static int __init setup_grsec_proc_gid(char *str)
+{
+	grsec_proc_gid = KGIDT_INIT(simple_strtol(str, NULL, 0));
+	return 1;
+}
+__setup("grsec_proc_gid=", setup_grsec_proc_gid);
+#endif
+
+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
+unsigned long pax_user_shadow_base __read_only;
+EXPORT_SYMBOL(pax_user_shadow_base);
+extern char pax_enter_kernel_user[];
+extern char pax_exit_kernel_user[];
+#endif
+
+#if defined(CONFIG_X86) && defined(CONFIG_PAX_MEMORY_UDEREF)
+static int __init setup_pax_nouderef(char *str)
+{
+#ifdef CONFIG_X86_32
+	unsigned int cpu;
+	struct desc_struct *gdt;
+
+	for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
+		gdt = get_cpu_gdt_table(cpu);
+		gdt[GDT_ENTRY_KERNEL_DS].type = 3;
+		gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf;
+		gdt[GDT_ENTRY_DEFAULT_USER_CS].limit = 0xf;
+		gdt[GDT_ENTRY_DEFAULT_USER_DS].limit = 0xf;
+	}
+	loadsegment(ds, __KERNEL_DS);
+	loadsegment(es, __KERNEL_DS);
+	loadsegment(ss, __KERNEL_DS);
+#else
+	memcpy(pax_enter_kernel_user, (unsigned char []){0xc3}, 1);
+	memcpy(pax_exit_kernel_user, (unsigned char []){0xc3}, 1);
+	clone_pgd_mask = ~(pgdval_t)0UL;
+	pax_user_shadow_base = 0UL;
+	setup_clear_cpu_cap(X86_FEATURE_PCID);
+	setup_clear_cpu_cap(X86_FEATURE_INVPCID);
+#endif
+
+	return 0;
+}
+early_param("pax_nouderef", setup_pax_nouderef);
+
+#ifdef CONFIG_X86_64
+static int __init setup_pax_weakuderef(char *str)
+{
+	if (clone_pgd_mask != ~(pgdval_t)0UL)
+		pax_user_shadow_base = 1UL << TASK_SIZE_MAX_SHIFT;
+	return 1;
+}
+__setup("pax_weakuderef", setup_pax_weakuderef);
+#endif
+#endif
+
+#ifdef CONFIG_PAX_SOFTMODE
+int pax_softmode;
+
+static int __init setup_pax_softmode(char *str)
+{
+	get_option(&str, &pax_softmode);
+	return 1;
+}
+__setup("pax_softmode=", setup_pax_softmode);
+#endif
+
 static const char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
 const char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
 static const char *panic_later, *panic_param;
@@ -727,7 +798,7 @@ static bool __init_or_module initcall_blacklisted(initcall_t fn)
 	struct blacklist_entry *entry;
 	char *fn_name;
 
-	fn_name = kasprintf(GFP_KERNEL, "%pf", fn);
+	fn_name = kasprintf(GFP_KERNEL, "%pX", fn);
 	if (!fn_name)
 		return false;
 
@@ -779,7 +850,7 @@ int __init_or_module do_one_initcall(initcall_t fn)
 {
 	int count = preempt_count();
 	int ret;
-	char msgbuf[64];
+	const char *msg1 = "", *msg2 = "";
 
 	if (initcall_blacklisted(fn))
 		return -EPERM;
@@ -789,18 +860,17 @@ int __init_or_module do_one_initcall(initcall_t fn)
 	else
 		ret = fn();
 
-	msgbuf[0] = 0;
-
 	if (preempt_count() != count) {
-		sprintf(msgbuf, "preemption imbalance ");
+		msg1 = " preemption imbalance";
 		preempt_count_set(count);
 	}
 	if (irqs_disabled()) {
-		strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
+		msg2 = " disabled interrupts";
 		local_irq_enable();
 	}
-	WARN(msgbuf[0], "initcall %pF returned with %s\n", fn, msgbuf);
+	WARN(*msg1 || *msg2, "initcall %pF returned with%s%s\n", fn, msg1, msg2);
 
+	add_latent_entropy();
 	return ret;
 }
 
@@ -907,8 +977,8 @@ static int run_init_process(const char *init_filename)
 {
 	argv_init[0] = init_filename;
 	return do_execve(getname_kernel(init_filename),
-		(const char __user *const __user *)argv_init,
-		(const char __user *const __user *)envp_init);
+		(const char __user *const __force_user *)argv_init,
+		(const char __user *const __force_user *)envp_init);
 }
 
 static int try_to_run_init_process(const char *init_filename)
@@ -925,6 +995,10 @@ static int try_to_run_init_process(const char *init_filename)
 	return ret;
 }
 
+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
+extern int gr_init_ran;
+#endif
+
 static noinline void __init kernel_init_freeable(void);
 
 static int __ref kernel_init(void *unused)
@@ -949,6 +1023,11 @@ static int __ref kernel_init(void *unused)
 		       ramdisk_execute_command, ret);
 	}
 
+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
+	/* if no initrd was used, be extra sure we enforce chroot restrictions */
+	gr_init_ran = 1;
+#endif
+
 	/*
 	 * We try each of these until one succeeds.
 	 *
@@ -1004,7 +1083,7 @@ static noinline void __init kernel_init_freeable(void)
 	do_basic_setup();
 
 	/* Open the /dev/console on the rootfs, this should never fail */
-	if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
+	if (sys_open((const char __force_user *) "/dev/console", O_RDWR, 0) < 0)
 		pr_err("Warning: unable to open an initial console.\n");
 
 	(void) sys_dup(0);
@@ -1017,11 +1096,13 @@ static noinline void __init kernel_init_freeable(void)
 	if (!ramdisk_execute_command)
 		ramdisk_execute_command = "/init";
 
-	if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) {
+	if (sys_access((const char __force_user *) ramdisk_execute_command, 0) != 0) {
 		ramdisk_execute_command = NULL;
 		prepare_namespace();
 	}
 
+	grsecurity_init();
+
 	/*
 	 * Ok, we have completed the initial bootup, and
 	 * we're essentially up and running. Get rid of the
diff --git a/ipc/compat.c b/ipc/compat.c
index b5ef4f7..ff31d87 100644
--- a/ipc/compat.c
+++ b/ipc/compat.c
@@ -396,7 +396,7 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
 			       COMPAT_SHMLBA);
 		if (err < 0)
 			return err;
-		return put_user(raddr, (compat_ulong_t *)compat_ptr(third));
+		return put_user(raddr, (compat_ulong_t __user *)compat_ptr(third));
 	}
 	case SHMDT:
 		return sys_shmdt(compat_ptr(ptr));
diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
index c3f0326..d4e0579 100644
--- a/ipc/ipc_sysctl.c
+++ b/ipc/ipc_sysctl.c
@@ -30,7 +30,7 @@ static void *get_ipc(struct ctl_table *table)
 static int proc_ipc_dointvec(struct ctl_table *table, int write,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table ipc_table;
+	ctl_table_no_const ipc_table;
 
 	memcpy(&ipc_table, table, sizeof(ipc_table));
 	ipc_table.data = get_ipc(table);
@@ -41,7 +41,7 @@ static int proc_ipc_dointvec(struct ctl_table *table, int write,
 static int proc_ipc_dointvec_minmax(struct ctl_table *table, int write,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table ipc_table;
+	ctl_table_no_const ipc_table;
 
 	memcpy(&ipc_table, table, sizeof(ipc_table));
 	ipc_table.data = get_ipc(table);
@@ -65,7 +65,7 @@ static int proc_ipc_dointvec_minmax_orphans(struct ctl_table *table, int write,
 static int proc_ipc_callback_dointvec_minmax(struct ctl_table *table, int write,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table ipc_table;
+	ctl_table_no_const ipc_table;
 	size_t lenp_bef = *lenp;
 	int rc;
 
@@ -88,7 +88,7 @@ static int proc_ipc_callback_dointvec_minmax(struct ctl_table *table, int write,
 static int proc_ipc_doulongvec_minmax(struct ctl_table *table, int write,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table ipc_table;
+	ctl_table_no_const ipc_table;
 	memcpy(&ipc_table, table, sizeof(ipc_table));
 	ipc_table.data = get_ipc(table);
 
@@ -122,7 +122,7 @@ static void ipc_auto_callback(int val)
 static int proc_ipcauto_dointvec_minmax(struct ctl_table *table, int write,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table ipc_table;
+	ctl_table_no_const ipc_table;
 	size_t lenp_bef = *lenp;
 	int oldval;
 	int rc;
diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
index 68d4e95..1477ded 100644
--- a/ipc/mq_sysctl.c
+++ b/ipc/mq_sysctl.c
@@ -25,7 +25,7 @@ static void *get_mq(struct ctl_table *table)
 static int proc_mq_dointvec(struct ctl_table *table, int write,
 			    void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table mq_table;
+	ctl_table_no_const mq_table;
 	memcpy(&mq_table, table, sizeof(mq_table));
 	mq_table.data = get_mq(table);
 
@@ -35,7 +35,7 @@ static int proc_mq_dointvec(struct ctl_table *table, int write,
 static int proc_mq_dointvec_minmax(struct ctl_table *table, int write,
 	void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table mq_table;
+	ctl_table_no_const mq_table;
 	memcpy(&mq_table, table, sizeof(mq_table));
 	mq_table.data = get_mq(table);
 
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 4fcf39a..d3cc2ec 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -278,6 +278,7 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
 		mq_bytes = mq_treesize + (info->attr.mq_maxmsg *
 					  info->attr.mq_msgsize);
 
+		gr_learn_resource(current, RLIMIT_MSGQUEUE, u->mq_bytes + mq_bytes, 1);
 		spin_lock(&mq_lock);
 		if (u->mq_bytes + mq_bytes < u->mq_bytes ||
 		    u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
diff --git a/ipc/shm.c b/ipc/shm.c
index 89fc354..cf56786 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -72,6 +72,14 @@ static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp);
 static int sysvipc_shm_proc_show(struct seq_file *s, void *it);
 #endif
 
+#ifdef CONFIG_GRKERNSEC
+extern int gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
+			   const time_t shm_createtime, const kuid_t cuid,
+			   const int shmid);
+extern int gr_chroot_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
+			   const time_t shm_createtime);
+#endif
+
 void shm_init_ns(struct ipc_namespace *ns)
 {
 	ns->shm_ctlmax = SHMMAX;
@@ -557,6 +565,14 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
 	shp->shm_lprid = 0;
 	shp->shm_atim = shp->shm_dtim = 0;
 	shp->shm_ctim = get_seconds();
+#ifdef CONFIG_GRKERNSEC
+	{
+		struct timespec timeval;
+		do_posix_clock_monotonic_gettime(&timeval);
+
+		shp->shm_createtime = timeval.tv_sec;
+	}
+#endif
 	shp->shm_segsz = size;
 	shp->shm_nattch = 0;
 	shp->shm_file = file;
@@ -1092,6 +1108,12 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
 		f_mode = FMODE_READ | FMODE_WRITE;
 	}
 	if (shmflg & SHM_EXEC) {
+
+#ifdef CONFIG_PAX_MPROTECT
+		if (current->mm->pax_flags & MF_PAX_MPROTECT)
+			goto out;
+#endif
+
 		prot |= PROT_EXEC;
 		acc_mode |= S_IXUGO;
 	}
@@ -1116,6 +1138,15 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
 	if (err)
 		goto out_unlock;
 
+#ifdef CONFIG_GRKERNSEC
+	if (!gr_handle_shmat(shp->shm_cprid, shp->shm_lapid, shp->shm_createtime,
+			     shp->shm_perm.cuid, shmid) ||
+	    !gr_chroot_shmat(shp->shm_cprid, shp->shm_lapid, shp->shm_createtime)) {
+		err = -EACCES;
+		goto out_unlock;
+	}
+#endif
+
 	ipc_lock_object(&shp->shm_perm);
 
 	/* check if shm_destroy() is tearing down shp */
@@ -1128,6 +1159,9 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
 	path = shp->shm_file->f_path;
 	path_get(&path);
 	shp->shm_nattch++;
+#ifdef CONFIG_GRKERNSEC
+	shp->shm_lapid = current->pid;
+#endif
 	size = i_size_read(path.dentry->d_inode);
 	ipc_unlock_object(&shp->shm_perm);
 	rcu_read_unlock();
diff --git a/ipc/util.c b/ipc/util.c
index 27d74e6..8be0be2 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -71,6 +71,8 @@ struct ipc_proc_iface {
 	int (*show)(struct seq_file *, void *);
 };
 
+extern int gr_ipc_permitted(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, int requested_mode, int granted_mode);
+
 static void ipc_memory_notifier(struct work_struct *work)
 {
 	ipcns_notify(IPCNS_MEMCHANGED);
@@ -537,6 +539,10 @@ int ipcperms(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, short flag)
 		granted_mode >>= 6;
 	else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))
 		granted_mode >>= 3;
+
+	if (!gr_ipc_permitted(ns, ipcp, requested_mode, granted_mode))
+		return -1;
+
 	/* is there some bit set in requested_mode but not in granted_mode? */
 	if ((requested_mode & ~granted_mode & 0007) &&
 	    !ns_capable(ns->user_ns, CAP_IPC_OWNER))
diff --git a/kernel/acct.c b/kernel/acct.c
index 808a86f..da69695 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -556,7 +556,7 @@ static void do_acct_process(struct bsd_acct_struct *acct,
 	 */
 	flim = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
 	current->signal->rlim[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY;
-	file->f_op->write(file, (char *)&ac,
+	file->f_op->write(file, (char __force_user *)&ac,
 			       sizeof(acct_t), &file->f_pos);
 	current->signal->rlim[RLIMIT_FSIZE].rlim_cur = flim;
 	set_fs(fs);
diff --git a/kernel/audit.c b/kernel/audit.c
index ba2ff5a..c6c0deb 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -122,7 +122,7 @@ u32		audit_sig_sid = 0;
    3) suppressed due to audit_rate_limit
    4) suppressed due to audit_backlog_limit
 */
-static atomic_t    audit_lost = ATOMIC_INIT(0);
+static atomic_unchecked_t    audit_lost = ATOMIC_INIT(0);
 
 /* The netlink socket. */
 static struct sock *audit_sock;
@@ -256,7 +256,7 @@ void audit_log_lost(const char *message)
 	unsigned long		now;
 	int			print;
 
-	atomic_inc(&audit_lost);
+	atomic_inc_unchecked(&audit_lost);
 
 	print = (audit_failure == AUDIT_FAIL_PANIC || !audit_rate_limit);
 
@@ -273,7 +273,7 @@ void audit_log_lost(const char *message)
 	if (print) {
 		if (printk_ratelimit())
 			pr_warn("audit_lost=%u audit_rate_limit=%u audit_backlog_limit=%u\n",
-				atomic_read(&audit_lost),
+				atomic_read_unchecked(&audit_lost),
 				audit_rate_limit,
 				audit_backlog_limit);
 		audit_panic(message);
@@ -840,7 +840,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 		s.pid			= audit_pid;
 		s.rate_limit		= audit_rate_limit;
 		s.backlog_limit		= audit_backlog_limit;
-		s.lost			= atomic_read(&audit_lost);
+		s.lost			= atomic_read_unchecked(&audit_lost);
 		s.backlog		= skb_queue_len(&audit_skb_queue);
 		s.version		= AUDIT_VERSION_LATEST;
 		s.backlog_wait_time	= audit_backlog_wait_time;
diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index 21eae3c..66db239 100644
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -2023,7 +2023,7 @@ int auditsc_get_stamp(struct audit_context *ctx,
 }
 
 /* global counter which is incremented every time something logs in */
-static atomic_t session_id = ATOMIC_INIT(0);
+static atomic_unchecked_t session_id = ATOMIC_INIT(0);
 
 static int audit_set_loginuid_perm(kuid_t loginuid)
 {
@@ -2090,7 +2090,7 @@ int audit_set_loginuid(kuid_t loginuid)
 
 	/* are we setting or clearing? */
 	if (uid_valid(loginuid))
-		sessionid = (unsigned int)atomic_inc_return(&session_id);
+		sessionid = (unsigned int)atomic_inc_return_unchecked(&session_id);
 
 	task->sessionid = sessionid;
 	task->loginuid = loginuid;
diff --git a/kernel/capability.c b/kernel/capability.c
index 989f5bf..d317ca0 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -192,6 +192,9 @@ SYSCALL_DEFINE2(capget, cap_user_header_t, header, cap_user_data_t, dataptr)
 		 * before modification is attempted and the application
 		 * fails.
 		 */
+		if (tocopy > ARRAY_SIZE(kdata))
+			return -EFAULT;
+
 		if (copy_to_user(dataptr, kdata, tocopy
 				 * sizeof(struct __user_cap_data_struct))) {
 			return -EFAULT;
@@ -297,10 +300,11 @@ bool has_ns_capability(struct task_struct *t,
 	int ret;
 
 	rcu_read_lock();
-	ret = security_capable(__task_cred(t), ns, cap);
+	ret = security_capable(__task_cred(t), ns, cap) == 0 &&
+		gr_task_is_capable(t, __task_cred(t), cap);
 	rcu_read_unlock();
 
-	return (ret == 0);
+	return ret;
 }
 
 /**
@@ -337,10 +341,10 @@ bool has_ns_capability_noaudit(struct task_struct *t,
 	int ret;
 
 	rcu_read_lock();
-	ret = security_capable_noaudit(__task_cred(t), ns, cap);
+	ret = security_capable_noaudit(__task_cred(t), ns, cap) == 0 && gr_task_is_capable_nolog(t, cap);
 	rcu_read_unlock();
 
-	return (ret == 0);
+	return ret;
 }
 
 /**
@@ -378,7 +382,7 @@ bool ns_capable(struct user_namespace *ns, int cap)
 		BUG();
 	}
 
-	if (security_capable(current_cred(), ns, cap) == 0) {
+	if (security_capable(current_cred(), ns, cap) == 0 && gr_is_capable(cap)) {
 		current->flags |= PF_SUPERPRIV;
 		return true;
 	}
@@ -386,6 +390,21 @@ bool ns_capable(struct user_namespace *ns, int cap)
 }
 EXPORT_SYMBOL(ns_capable);
 
+bool ns_capable_nolog(struct user_namespace *ns, int cap)
+{
+	if (unlikely(!cap_valid(cap))) {
+		printk(KERN_CRIT "capable_nolog() called with invalid cap=%u\n", cap);
+		BUG();
+	}
+
+	if (security_capable_noaudit(current_cred(), ns, cap) == 0 && gr_is_capable_nolog(cap)) {
+		current->flags |= PF_SUPERPRIV;
+		return true;
+	}
+	return false;
+}
+EXPORT_SYMBOL(ns_capable_nolog);
+
 /**
  * file_ns_capable - Determine if the file's opener had a capability in effect
  * @file:  The file we want to check
@@ -427,6 +446,12 @@ bool capable(int cap)
 }
 EXPORT_SYMBOL(capable);
 
+bool capable_nolog(int cap)
+{
+	return ns_capable_nolog(&init_user_ns, cap);
+}
+EXPORT_SYMBOL(capable_nolog);
+
 /**
  * capable_wrt_inode_uidgid - Check nsown_capable and uid and gid mapped
  * @inode: The inode in question
@@ -444,3 +469,12 @@ bool capable_wrt_inode_uidgid(const struct inode *inode, int cap)
 		kgid_has_mapping(ns, inode->i_gid);
 }
 EXPORT_SYMBOL(capable_wrt_inode_uidgid);
+
+bool capable_wrt_inode_uidgid_nolog(const struct inode *inode, int cap)
+{
+	struct user_namespace *ns = current_user_ns();
+
+	return ns_capable_nolog(ns, cap) && kuid_has_mapping(ns, inode->i_uid) &&
+		kgid_has_mapping(ns, inode->i_gid);
+}
+EXPORT_SYMBOL(capable_wrt_inode_uidgid_nolog);
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 70776ae..09c4988 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5146,6 +5146,14 @@ static void cgroup_release_agent(struct work_struct *work)
 						    release_list);
 		list_del_init(&cgrp->release_list);
 		raw_spin_unlock(&release_list_lock);
+
+		/*
+		 * don't bother calling call_usermodehelper if we haven't
+		 * configured a binary to execute
+		 */
+		if (cgrp->root->release_agent_path[0] == '\0')
+			goto continue_free;
+
 		pathbuf = kmalloc(PATH_MAX, GFP_KERNEL);
 		if (!pathbuf)
 			goto continue_free;
@@ -5336,7 +5344,7 @@ static int cgroup_css_links_read(struct seq_file *seq, void *v)
 		struct task_struct *task;
 		int count = 0;
 
-		seq_printf(seq, "css_set %p\n", cset);
+		seq_printf(seq, "css_set %pK\n", cset);
 
 		list_for_each_entry(task, &cset->tasks, cg_list) {
 			if (count++ > MAX_TASKS_SHOWN_PER_CSS)
diff --git a/kernel/compat.c b/kernel/compat.c
index 633394f..bdfa969 100644
--- a/kernel/compat.c
+++ b/kernel/compat.c
@@ -13,6 +13,7 @@
 
 #include <linux/linkage.h>
 #include <linux/compat.h>
+#include <linux/module.h>
 #include <linux/errno.h>
 #include <linux/time.h>
 #include <linux/signal.h>
@@ -220,7 +221,7 @@ static long compat_nanosleep_restart(struct restart_block *restart)
 	mm_segment_t oldfs;
 	long ret;
 
-	restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
+	restart->nanosleep.rmtp = (struct timespec __force_user *) &rmt;
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	ret = hrtimer_nanosleep_restart(restart);
@@ -252,7 +253,7 @@ COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	ret = hrtimer_nanosleep(&tu,
-				rmtp ? (struct timespec __user *)&rmt : NULL,
+				rmtp ? (struct timespec __force_user *)&rmt : NULL,
 				HRTIMER_MODE_REL, CLOCK_MONOTONIC);
 	set_fs(oldfs);
 
@@ -361,7 +362,7 @@ COMPAT_SYSCALL_DEFINE1(sigpending, compat_old_sigset_t __user *, set)
 	mm_segment_t old_fs = get_fs();
 
 	set_fs(KERNEL_DS);
-	ret = sys_sigpending((old_sigset_t __user *) &s);
+	ret = sys_sigpending((old_sigset_t __force_user *) &s);
 	set_fs(old_fs);
 	if (ret == 0)
 		ret = put_user(s, set);
@@ -451,7 +452,7 @@ COMPAT_SYSCALL_DEFINE2(old_getrlimit, unsigned int, resource,
 	mm_segment_t old_fs = get_fs();
 
 	set_fs(KERNEL_DS);
-	ret = sys_old_getrlimit(resource, (struct rlimit __user *)&r);
+	ret = sys_old_getrlimit(resource, (struct rlimit __force_user *)&r);
 	set_fs(old_fs);
 
 	if (!ret) {
@@ -533,8 +534,8 @@ COMPAT_SYSCALL_DEFINE4(wait4,
 		set_fs (KERNEL_DS);
 		ret = sys_wait4(pid,
 				(stat_addr ?
-				 (unsigned int __user *) &status : NULL),
-				options, (struct rusage __user *) &r);
+				 (unsigned int __force_user *) &status : NULL),
+				options, (struct rusage __force_user *) &r);
 		set_fs (old_fs);
 
 		if (ret > 0) {
@@ -560,8 +561,8 @@ COMPAT_SYSCALL_DEFINE5(waitid,
 	memset(&info, 0, sizeof(info));
 
 	set_fs(KERNEL_DS);
-	ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
-			 uru ? (struct rusage __user *)&ru : NULL);
+	ret = sys_waitid(which, pid, (siginfo_t __force_user *)&info, options,
+			 uru ? (struct rusage __force_user *)&ru : NULL);
 	set_fs(old_fs);
 
 	if ((ret < 0) || (info.si_signo == 0))
@@ -695,8 +696,8 @@ COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = sys_timer_settime(timer_id, flags,
-				(struct itimerspec __user *) &newts,
-				(struct itimerspec __user *) &oldts);
+				(struct itimerspec __force_user *) &newts,
+				(struct itimerspec __force_user *) &oldts);
 	set_fs(oldfs);
 	if (!err && old && put_compat_itimerspec(old, &oldts))
 		return -EFAULT;
@@ -713,7 +714,7 @@ COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = sys_timer_gettime(timer_id,
-				(struct itimerspec __user *) &ts);
+				(struct itimerspec __force_user *) &ts);
 	set_fs(oldfs);
 	if (!err && put_compat_itimerspec(setting, &ts))
 		return -EFAULT;
@@ -732,7 +733,7 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = sys_clock_settime(which_clock,
-				(struct timespec __user *) &ts);
+				(struct timespec __force_user *) &ts);
 	set_fs(oldfs);
 	return err;
 }
@@ -747,7 +748,7 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = sys_clock_gettime(which_clock,
-				(struct timespec __user *) &ts);
+				(struct timespec __force_user *) &ts);
 	set_fs(oldfs);
 	if (!err && compat_put_timespec(&ts, tp))
 		return -EFAULT;
@@ -767,7 +768,7 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
 
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
-	ret = sys_clock_adjtime(which_clock, (struct timex __user *) &txc);
+	ret = sys_clock_adjtime(which_clock, (struct timex __force_user *) &txc);
 	set_fs(oldfs);
 
 	err = compat_put_timex(utp, &txc);
@@ -787,7 +788,7 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = sys_clock_getres(which_clock,
-			       (struct timespec __user *) &ts);
+			       (struct timespec __force_user *) &ts);
 	set_fs(oldfs);
 	if (!err && tp && compat_put_timespec(&ts, tp))
 		return -EFAULT;
@@ -801,7 +802,7 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
 	struct timespec tu;
 	struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp;
 
-	restart->nanosleep.rmtp = (struct timespec __user *) &tu;
+	restart->nanosleep.rmtp = (struct timespec __force_user *) &tu;
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = clock_nanosleep_restart(restart);
@@ -833,8 +834,8 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
 	oldfs = get_fs();
 	set_fs(KERNEL_DS);
 	err = sys_clock_nanosleep(which_clock, flags,
-				  (struct timespec __user *) &in,
-				  (struct timespec __user *) &out);
+				  (struct timespec __force_user *) &in,
+				  (struct timespec __force_user *) &out);
 	set_fs(oldfs);
 
 	if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
@@ -1128,7 +1129,7 @@ COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval,
 	mm_segment_t old_fs = get_fs();
 
 	set_fs(KERNEL_DS);
-	ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
+	ret = sys_sched_rr_get_interval(pid, (struct timespec __force_user *)&t);
 	set_fs(old_fs);
 	if (compat_put_timespec(&t, interval))
 		return -EFAULT;
diff --git a/kernel/configs.c b/kernel/configs.c
index c18b1f1..b9a0132 100644
--- a/kernel/configs.c
+++ b/kernel/configs.c
@@ -74,8 +74,19 @@ static int __init ikconfig_init(void)
 	struct proc_dir_entry *entry;
 
 	/* create the current config file */
+#if defined(CONFIG_GRKERNSEC_PROC_ADD) || defined(CONFIG_GRKERNSEC_HIDESYM)
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_HIDESYM)
+	entry = proc_create("config.gz", S_IFREG | S_IRUSR, NULL,
+			    &ikconfig_file_ops);
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	entry = proc_create("config.gz", S_IFREG | S_IRUSR | S_IRGRP, NULL,
+			    &ikconfig_file_ops);
+#endif
+#else
 	entry = proc_create("config.gz", S_IFREG | S_IRUGO, NULL,
 			    &ikconfig_file_ops);
+#endif
+
 	if (!entry)
 		return -ENOMEM;
 
diff --git a/kernel/cred.c b/kernel/cred.c
index e0573a4..26c0fd3 100644
--- a/kernel/cred.c
+++ b/kernel/cred.c
@@ -164,6 +164,16 @@ void exit_creds(struct task_struct *tsk)
 	validate_creds(cred);
 	alter_cred_subscribers(cred, -1);
 	put_cred(cred);
+
+#ifdef CONFIG_GRKERNSEC_SETXID
+	cred = (struct cred *) tsk->delayed_cred;
+	if (cred != NULL) {
+		tsk->delayed_cred = NULL;
+		validate_creds(cred);
+		alter_cred_subscribers(cred, -1);
+		put_cred(cred);
+	}
+#endif
 }
 
 /**
@@ -411,7 +421,7 @@ static bool cred_cap_issubset(const struct cred *set, const struct cred *subset)
  * Always returns 0 thus allowing this function to be tail-called at the end
  * of, say, sys_setgid().
  */
-int commit_creds(struct cred *new)
+static int __commit_creds(struct cred *new)
 {
 	struct task_struct *task = current;
 	const struct cred *old = task->real_cred;
@@ -430,6 +440,8 @@ int commit_creds(struct cred *new)
 
 	get_cred(new); /* we will require a ref for the subj creds too */
 
+	gr_set_role_label(task, new->uid, new->gid);
+
 	/* dumpability changes */
 	if (!uid_eq(old->euid, new->euid) ||
 	    !gid_eq(old->egid, new->egid) ||
@@ -479,6 +491,105 @@ int commit_creds(struct cred *new)
 	put_cred(old);
 	return 0;
 }
+#ifdef CONFIG_GRKERNSEC_SETXID
+extern int set_user(struct cred *new);
+
+void gr_delayed_cred_worker(void)
+{
+	const struct cred *new = current->delayed_cred;
+	struct cred *ncred;
+
+	current->delayed_cred = NULL;
+
+	if (!uid_eq(current_uid(), GLOBAL_ROOT_UID) && new != NULL) {
+		// from doing get_cred on it when queueing this
+		put_cred(new);
+		return;
+	} else if (new == NULL)
+		return;
+
+	ncred = prepare_creds();
+	if (!ncred)
+		goto die;
+	// uids
+	ncred->uid = new->uid;
+	ncred->euid = new->euid;
+	ncred->suid = new->suid;
+	ncred->fsuid = new->fsuid;
+	// gids
+	ncred->gid = new->gid;
+	ncred->egid = new->egid;
+	ncred->sgid = new->sgid;
+	ncred->fsgid = new->fsgid;
+	// groups
+	set_groups(ncred, new->group_info);
+	// caps
+	ncred->securebits = new->securebits;
+	ncred->cap_inheritable = new->cap_inheritable;
+	ncred->cap_permitted = new->cap_permitted;
+	ncred->cap_effective = new->cap_effective;
+	ncred->cap_bset = new->cap_bset;
+
+	if (set_user(ncred)) {
+		abort_creds(ncred);
+		goto die;
+	}
+
+	// from doing get_cred on it when queueing this
+	put_cred(new);
+
+	__commit_creds(ncred);
+	return;
+die:
+	// from doing get_cred on it when queueing this
+	put_cred(new);
+	do_group_exit(SIGKILL);
+}
+#endif
+
+int commit_creds(struct cred *new)
+{
+#ifdef CONFIG_GRKERNSEC_SETXID
+	int ret;
+	int schedule_it = 0;
+	struct task_struct *t;
+	unsigned oldsecurebits = current_cred()->securebits;
+
+	/* we won't get called with tasklist_lock held for writing
+	   and interrupts disabled as the cred struct in that case is
+	   init_cred
+	*/
+	if (grsec_enable_setxid && !current_is_single_threaded() &&
+	    uid_eq(current_uid(), GLOBAL_ROOT_UID) &&
+	    !uid_eq(new->uid, GLOBAL_ROOT_UID)) {
+		schedule_it = 1;
+	}
+	ret = __commit_creds(new);
+	if (schedule_it) {
+		rcu_read_lock();
+		read_lock(&tasklist_lock);
+		for (t = next_thread(current); t != current;
+		     t = next_thread(t)) {
+			/* we'll check if the thread has uid 0 in
+			 * the delayed worker routine
+			 */
+			if (task_securebits(t) == oldsecurebits &&
+			    t->delayed_cred == NULL) {
+				t->delayed_cred = get_cred(new);
+				set_tsk_thread_flag(t, TIF_GRSEC_SETXID);
+				set_tsk_need_resched(t);
+			}
+		}
+		read_unlock(&tasklist_lock);
+		rcu_read_unlock();
+	}
+
+	return ret;
+#else
+	return __commit_creds(new);
+#endif
+}
+
 EXPORT_SYMBOL(commit_creds);
 
 /**
diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
index 1adf62b..7736e06 100644
--- a/kernel/debug/debug_core.c
+++ b/kernel/debug/debug_core.c
@@ -124,7 +124,7 @@ static DEFINE_RAW_SPINLOCK(dbg_slave_lock);
  */
 static atomic_t			masters_in_kgdb;
 static atomic_t			slaves_in_kgdb;
-static atomic_t			kgdb_break_tasklet_var;
+static atomic_unchecked_t	kgdb_break_tasklet_var;
 atomic_t			kgdb_setting_breakpoint;
 
 struct task_struct		*kgdb_usethread;
@@ -134,7 +134,7 @@ int				kgdb_single_step;
 static pid_t			kgdb_sstep_pid;
 
 /* to keep track of the CPU which is doing the single stepping*/
-atomic_t			kgdb_cpu_doing_single_step = ATOMIC_INIT(-1);
+atomic_unchecked_t		kgdb_cpu_doing_single_step = ATOMIC_INIT(-1);
 
 /*
  * If you are debugging a problem where roundup (the collection of
@@ -549,7 +549,7 @@ return_normal:
 	 * kernel will only try for the value of sstep_tries before
 	 * giving up and continuing on.
 	 */
-	if (atomic_read(&kgdb_cpu_doing_single_step) != -1 &&
+	if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1 &&
 	    (kgdb_info[cpu].task &&
 	     kgdb_info[cpu].task->pid != kgdb_sstep_pid) && --sstep_tries) {
 		atomic_set(&kgdb_active, -1);
@@ -647,8 +647,8 @@ cpu_master_loop:
 	}
 
 kgdb_restore:
-	if (atomic_read(&kgdb_cpu_doing_single_step) != -1) {
-		int sstep_cpu = atomic_read(&kgdb_cpu_doing_single_step);
+	if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) {
+		int sstep_cpu = atomic_read_unchecked(&kgdb_cpu_doing_single_step);
 		if (kgdb_info[sstep_cpu].task)
 			kgdb_sstep_pid = kgdb_info[sstep_cpu].task->pid;
 		else
@@ -925,18 +925,18 @@ static void kgdb_unregister_callbacks(void)
 static void kgdb_tasklet_bpt(unsigned long ing)
 {
 	kgdb_breakpoint();
-	atomic_set(&kgdb_break_tasklet_var, 0);
+	atomic_set_unchecked(&kgdb_break_tasklet_var, 0);
 }
 
 static DECLARE_TASKLET(kgdb_tasklet_breakpoint, kgdb_tasklet_bpt, 0);
 
 void kgdb_schedule_breakpoint(void)
 {
-	if (atomic_read(&kgdb_break_tasklet_var) ||
+	if (atomic_read_unchecked(&kgdb_break_tasklet_var) ||
 		atomic_read(&kgdb_active) != -1 ||
 		atomic_read(&kgdb_setting_breakpoint))
 		return;
-	atomic_inc(&kgdb_break_tasklet_var);
+	atomic_inc_unchecked(&kgdb_break_tasklet_var);
 	tasklet_schedule(&kgdb_tasklet_breakpoint);
 }
 EXPORT_SYMBOL_GPL(kgdb_schedule_breakpoint);
diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
index 2f7c760..95b6a66 100644
--- a/kernel/debug/kdb/kdb_main.c
+++ b/kernel/debug/kdb/kdb_main.c
@@ -1977,7 +1977,7 @@ static int kdb_lsmod(int argc, const char **argv)
 			continue;
 
 		kdb_printf("%-20s%8u  0x%p ", mod->name,
-			   mod->core_size, (void *)mod);
+			   mod->core_size_rx + mod->core_size_rw, (void *)mod);
 #ifdef CONFIG_MODULE_UNLOAD
 		kdb_printf("%4ld ", module_refcount(mod));
 #endif
@@ -1987,7 +1987,7 @@ static int kdb_lsmod(int argc, const char **argv)
 			kdb_printf(" (Loading)");
 		else
 			kdb_printf(" (Live)");
-		kdb_printf(" 0x%p", mod->module_core);
+		kdb_printf(" 0x%p 0x%p", mod->module_core_rx,  mod->module_core_rw);
 
 #ifdef CONFIG_MODULE_UNLOAD
 		{
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 6b17ac1..00fd505 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -160,8 +160,15 @@ static struct srcu_struct pmus_srcu;
  *   0 - disallow raw tracepoint access for unpriv
  *   1 - disallow cpu events for unpriv
  *   2 - disallow kernel profiling for unpriv
+ *   3 - disallow all unpriv perf event use
  */
-int sysctl_perf_event_paranoid __read_mostly = 1;
+#ifdef CONFIG_GRKERNSEC_PERF_HARDEN
+int sysctl_perf_event_legitimately_concerned __read_mostly = 3;
+#elif defined(CONFIG_GRKERNSEC_HIDESYM)
+int sysctl_perf_event_legitimately_concerned __read_mostly = 2;
+#else
+int sysctl_perf_event_legitimately_concerned __read_mostly = 1;
+#endif
 
 /* Minimum for 512 kiB + 1 user control page */
 int sysctl_perf_event_mlock __read_mostly = 512 + (PAGE_SIZE / 1024); /* 'free' kiB per user */
@@ -187,7 +194,7 @@ void update_perf_cpu_limits(void)
 
 	tmp *= sysctl_perf_cpu_time_max_percent;
 	do_div(tmp, 100);
-	ACCESS_ONCE(perf_sample_allowed_ns) = tmp;
+	ACCESS_ONCE_RW(perf_sample_allowed_ns) = tmp;
 }
 
 static int perf_rotate_context(struct perf_cpu_context *cpuctx);
@@ -293,7 +300,7 @@ void perf_sample_event_took(u64 sample_len_ns)
 	}
 }
 
-static atomic64_t perf_event_id;
+static atomic64_unchecked_t perf_event_id;
 
 static void cpu_ctx_sched_out(struct perf_cpu_context *cpuctx,
 			      enum event_type_t event_type);
@@ -3023,7 +3030,7 @@ static void __perf_event_read(void *info)
 
 static inline u64 perf_event_count(struct perf_event *event)
 {
-	return local64_read(&event->count) + atomic64_read(&event->child_count);
+	return local64_read(&event->count) + atomic64_read_unchecked(&event->child_count);
 }
 
 static u64 perf_event_read(struct perf_event *event)
@@ -3399,9 +3406,9 @@ u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running)
 	mutex_lock(&event->child_mutex);
 	total += perf_event_read(event);
 	*enabled += event->total_time_enabled +
-			atomic64_read(&event->child_total_time_enabled);
+			atomic64_read_unchecked(&event->child_total_time_enabled);
 	*running += event->total_time_running +
-			atomic64_read(&event->child_total_time_running);
+			atomic64_read_unchecked(&event->child_total_time_running);
 
 	list_for_each_entry(child, &event->child_list, child_list) {
 		total += perf_event_read(child);
@@ -3830,10 +3837,10 @@ void perf_event_update_userpage(struct perf_event *event)
 		userpg->offset -= local64_read(&event->hw.prev_count);
 
 	userpg->time_enabled = enabled +
-			atomic64_read(&event->child_total_time_enabled);
+			atomic64_read_unchecked(&event->child_total_time_enabled);
 
 	userpg->time_running = running +
-			atomic64_read(&event->child_total_time_running);
+			atomic64_read_unchecked(&event->child_total_time_running);
 
 	arch_perf_update_userpage(userpg, now);
 
@@ -4397,7 +4404,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
 
 		/* Data. */
 		sp = perf_user_stack_pointer(regs);
-		rem = __output_copy_user(handle, (void *) sp, dump_size);
+		rem = __output_copy_user(handle, (void __user *) sp, dump_size);
 		dyn_size = dump_size - rem;
 
 		perf_output_skip(handle, rem);
@@ -4488,11 +4495,11 @@ static void perf_output_read_one(struct perf_output_handle *handle,
 	values[n++] = perf_event_count(event);
 	if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
 		values[n++] = enabled +
-			atomic64_read(&event->child_total_time_enabled);
+			atomic64_read_unchecked(&event->child_total_time_enabled);
 	}
 	if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
 		values[n++] = running +
-			atomic64_read(&event->child_total_time_running);
+			atomic64_read_unchecked(&event->child_total_time_running);
 	}
 	if (read_format & PERF_FORMAT_ID)
 		values[n++] = primary_event_id(event);
@@ -6801,7 +6808,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu,
 	event->parent		= parent_event;
 
 	event->ns		= get_pid_ns(task_active_pid_ns(current));
-	event->id		= atomic64_inc_return(&perf_event_id);
+	event->id		= atomic64_inc_return_unchecked(&perf_event_id);
 
 	event->state		= PERF_EVENT_STATE_INACTIVE;
 
@@ -7080,6 +7087,11 @@ SYSCALL_DEFINE5(perf_event_open,
 	if (flags & ~PERF_FLAG_ALL)
 		return -EINVAL;
 
+#ifdef CONFIG_GRKERNSEC_PERF_HARDEN
+	if (perf_paranoid_any() && !capable(CAP_SYS_ADMIN))
+		return -EACCES;
+#endif
+
 	err = perf_copy_attr(attr_uptr, &attr);
 	if (err)
 		return err;
@@ -7432,10 +7444,10 @@ static void sync_child_event(struct perf_event *child_event,
 	/*
 	 * Add back the child's count to the parent's count:
 	 */
-	atomic64_add(child_val, &parent_event->child_count);
-	atomic64_add(child_event->total_time_enabled,
+	atomic64_add_unchecked(child_val, &parent_event->child_count);
+	atomic64_add_unchecked(child_event->total_time_enabled,
 		     &parent_event->child_total_time_enabled);
-	atomic64_add(child_event->total_time_running,
+	atomic64_add_unchecked(child_event->total_time_running,
 		     &parent_event->child_total_time_running);
 
 	/*
diff --git a/kernel/events/internal.h b/kernel/events/internal.h
index 569b2187..19940d9 100644
--- a/kernel/events/internal.h
+++ b/kernel/events/internal.h
@@ -81,10 +81,10 @@ static inline unsigned long perf_data_size(struct ring_buffer *rb)
 	return rb->nr_pages << (PAGE_SHIFT + page_order(rb));
 }
 
-#define DEFINE_OUTPUT_COPY(func_name, memcpy_func)			\
+#define DEFINE_OUTPUT_COPY(func_name, memcpy_func, user)		\
 static inline unsigned long						\
 func_name(struct perf_output_handle *handle,				\
-	  const void *buf, unsigned long len)				\
+	  const void user *buf, unsigned long len)			\
 {									\
 	unsigned long size, written;					\
 									\
@@ -117,7 +117,7 @@ memcpy_common(void *dst, const void *src, unsigned long n)
 	return 0;
 }
 
-DEFINE_OUTPUT_COPY(__output_copy, memcpy_common)
+DEFINE_OUTPUT_COPY(__output_copy, memcpy_common, )
 
 static inline unsigned long
 memcpy_skip(void *dst, const void *src, unsigned long n)
@@ -125,7 +125,7 @@ memcpy_skip(void *dst, const void *src, unsigned long n)
 	return 0;
 }
 
-DEFINE_OUTPUT_COPY(__output_skip, memcpy_skip)
+DEFINE_OUTPUT_COPY(__output_skip, memcpy_skip, )
 
 #ifndef arch_perf_out_copy_user
 #define arch_perf_out_copy_user arch_perf_out_copy_user
@@ -143,7 +143,7 @@ arch_perf_out_copy_user(void *dst, const void *src, unsigned long n)
 }
 #endif
 
-DEFINE_OUTPUT_COPY(__output_copy_user, arch_perf_out_copy_user)
+DEFINE_OUTPUT_COPY(__output_copy_user, arch_perf_out_copy_user, __user)
 
 /* Callchain handling */
 extern struct perf_callchain_entry *
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 6f3254e..e4c1fe4 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -1670,7 +1670,7 @@ static int is_trap_at_addr(struct mm_struct *mm, unsigned long vaddr)
 {
 	struct page *page;
 	uprobe_opcode_t opcode;
-	int result;
+	long result;
 
 	pagefault_disable();
 	result = __copy_from_user_inatomic(&opcode, (void __user*)vaddr,
diff --git a/kernel/exit.c b/kernel/exit.c
index e5c4668..592d2e5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -173,6 +173,10 @@ void release_task(struct task_struct * p)
 	struct task_struct *leader;
 	int zap_leader;
 repeat:
+#ifdef CONFIG_NET
+	gr_del_task_from_ip_table(p);
+#endif
+
 	/* don't need to get the RCU readlock here - the process is dead and
 	 * can't be modifying its own credentials. But shut RCU-lockdep up */
 	rcu_read_lock();
@@ -664,6 +668,8 @@ void do_exit(long code)
 	struct task_struct *tsk = current;
 	int group_dead;
 
+	set_fs(USER_DS);
+
 	profile_task_exit(tsk);
 
 	WARN_ON(blk_needs_flush_plug(tsk));
@@ -680,7 +686,6 @@ void do_exit(long code)
 	 * mm_release()->clear_child_tid() from writing to a user-controlled
 	 * kernel address.
 	 */
-	set_fs(USER_DS);
 
 	ptrace_event(PTRACE_EVENT_EXIT, code);
 
@@ -739,6 +744,9 @@ void do_exit(long code)
 	tsk->exit_code = code;
 	taskstats_exit(tsk, group_dead);
 
+	gr_acl_handle_psacct(tsk, code);
+	gr_acl_handle_exit();
+
 	exit_mm(tsk);
 
 	if (group_dead)
@@ -858,7 +866,7 @@ SYSCALL_DEFINE1(exit, int, error_code)
  * Take down every thread in the group.  This is called by fatal signals
  * as well as by sys_exit_group (below).
  */
-void
+__noreturn void
 do_group_exit(int exit_code)
 {
 	struct signal_struct *sig = current->signal;
diff --git a/kernel/fork.c b/kernel/fork.c
index 6a13c46..a623c8e 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -183,6 +183,48 @@ void thread_info_cache_init(void)
 # endif
 #endif
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+static inline struct thread_info *gr_alloc_thread_info_node(struct task_struct *tsk,
+						  int node, void **lowmem_stack)
+{
+	struct page *pages[THREAD_SIZE / PAGE_SIZE];
+	void *ret = NULL;
+	unsigned int i;
+
+	*lowmem_stack = alloc_thread_info_node(tsk, node);
+	if (*lowmem_stack == NULL)
+		goto out;
+
+	for (i = 0; i < THREAD_SIZE / PAGE_SIZE; i++)
+		pages[i] = virt_to_page(*lowmem_stack + (i * PAGE_SIZE));
+	
+	/* use VM_IOREMAP to gain THREAD_SIZE alignment */
+	ret = vmap(pages, THREAD_SIZE / PAGE_SIZE, VM_IOREMAP, PAGE_KERNEL);
+	if (ret == NULL) {
+		free_thread_info(*lowmem_stack);
+		*lowmem_stack = NULL;
+	}
+
+out:
+	return ret;
+}
+
+static inline void gr_free_thread_info(struct task_struct *tsk, struct thread_info *ti)
+{
+	unmap_process_stacks(tsk);
+}
+#else
+static inline struct thread_info *gr_alloc_thread_info_node(struct task_struct *tsk,
+						  int node, void **lowmem_stack)
+{
+	return alloc_thread_info_node(tsk, node);
+}
+static inline void gr_free_thread_info(struct task_struct *tsk, struct thread_info *ti)
+{
+	free_thread_info(ti);
+}
+#endif
+
 /* SLAB cache for signal_struct structures (tsk->signal) */
 static struct kmem_cache *signal_cachep;
 
@@ -201,18 +243,22 @@ struct kmem_cache *vm_area_cachep;
 /* SLAB cache for mm_struct structures (tsk->mm) */
 static struct kmem_cache *mm_cachep;
 
-static void account_kernel_stack(struct thread_info *ti, int account)
+static void account_kernel_stack(struct task_struct *tsk, struct thread_info *ti, int account)
 {
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+	struct zone *zone = page_zone(virt_to_page(tsk->lowmem_stack));
+#else
 	struct zone *zone = page_zone(virt_to_page(ti));
+#endif
 
 	mod_zone_page_state(zone, NR_KERNEL_STACK, account);
 }
 
 void free_task(struct task_struct *tsk)
 {
-	account_kernel_stack(tsk->stack, -1);
+	account_kernel_stack(tsk, tsk->stack, -1);
 	arch_release_thread_info(tsk->stack);
-	free_thread_info(tsk->stack);
+	gr_free_thread_info(tsk, tsk->stack);
 	rt_mutex_debug_task_free(tsk);
 	ftrace_graph_exit_task(tsk);
 	put_seccomp_filter(tsk);
@@ -299,6 +345,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 	struct task_struct *tsk;
 	struct thread_info *ti;
 	unsigned long *stackend;
+	void *lowmem_stack;
 	int node = tsk_fork_get_node(orig);
 	int err;
 
@@ -306,7 +353,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 	if (!tsk)
 		return NULL;
 
-	ti = alloc_thread_info_node(tsk, node);
+	ti = gr_alloc_thread_info_node(tsk, node, &lowmem_stack);
 	if (!ti)
 		goto free_tsk;
 
@@ -315,6 +362,9 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 		goto free_ti;
 
 	tsk->stack = ti;
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+	tsk->lowmem_stack = lowmem_stack;
+#endif
 
 	setup_thread_stack(tsk, orig);
 	clear_user_return_notifier(tsk);
@@ -323,7 +373,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 	*stackend = STACK_END_MAGIC;	/* for overflow detection */
 
 #ifdef CONFIG_CC_STACKPROTECTOR
-	tsk->stack_canary = get_random_int();
+	tsk->stack_canary = pax_get_random_long();
 #endif
 
 	/*
@@ -337,24 +387,92 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
 	tsk->splice_pipe = NULL;
 	tsk->task_frag.page = NULL;
 
-	account_kernel_stack(ti, 1);
+	account_kernel_stack(tsk, ti, 1);
 
 	return tsk;
 
 free_ti:
-	free_thread_info(ti);
+	gr_free_thread_info(tsk, ti);
 free_tsk:
 	free_task_struct(tsk);
 	return NULL;
 }
 
 #ifdef CONFIG_MMU
-static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
+static struct vm_area_struct *dup_vma(struct mm_struct *mm, struct mm_struct *oldmm, struct vm_area_struct *mpnt)
+{
+	struct vm_area_struct *tmp;
+	unsigned long charge;
+	struct file *file;
+	int retval;
+
+	charge = 0;
+	if (mpnt->vm_flags & VM_ACCOUNT) {
+		unsigned long len = vma_pages(mpnt);
+
+		if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
+			goto fail_nomem;
+		charge = len;
+	}
+	tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+	if (!tmp)
+		goto fail_nomem;
+	*tmp = *mpnt;
+	tmp->vm_mm = mm;
+	INIT_LIST_HEAD(&tmp->anon_vma_chain);
+	retval = vma_dup_policy(mpnt, tmp);
+	if (retval)
+		goto fail_nomem_policy;
+	if (anon_vma_fork(tmp, mpnt))
+		goto fail_nomem_anon_vma_fork;
+	tmp->vm_flags &= ~VM_LOCKED;
+	tmp->vm_next = tmp->vm_prev = NULL;
+	tmp->vm_mirror = NULL;
+	file = tmp->vm_file;
+	if (file) {
+		struct inode *inode = file_inode(file);
+		struct address_space *mapping = file->f_mapping;
+
+		get_file(file);
+		if (tmp->vm_flags & VM_DENYWRITE)
+			atomic_dec(&inode->i_writecount);
+		mutex_lock(&mapping->i_mmap_mutex);
+		if (tmp->vm_flags & VM_SHARED)
+			mapping->i_mmap_writable++;
+		flush_dcache_mmap_lock(mapping);
+		/* insert tmp into the share list, just after mpnt */
+		if (unlikely(tmp->vm_flags & VM_NONLINEAR))
+			vma_nonlinear_insert(tmp, &mapping->i_mmap_nonlinear);
+		else
+			vma_interval_tree_insert_after(tmp, mpnt, &mapping->i_mmap);
+		flush_dcache_mmap_unlock(mapping);
+		mutex_unlock(&mapping->i_mmap_mutex);
+	}
+
+	/*
+	 * Clear hugetlb-related page reserves for children. This only
+	 * affects MAP_PRIVATE mappings. Faults generated by the child
+	 * are not guaranteed to succeed, even if read-only
+	 */
+	if (is_vm_hugetlb_page(tmp))
+		reset_vma_resv_huge_pages(tmp);
+
+	return tmp;
+
+fail_nomem_anon_vma_fork:
+	mpol_put(vma_policy(tmp));
+fail_nomem_policy:
+	kmem_cache_free(vm_area_cachep, tmp);
+fail_nomem:
+	vm_unacct_memory(charge);
+	return NULL;
+}
+
+static __latent_entropy int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
 {
 	struct vm_area_struct *mpnt, *tmp, *prev, **pprev;
 	struct rb_node **rb_link, *rb_parent;
 	int retval;
-	unsigned long charge;
 
 	uprobe_start_dup_mmap();
 	down_write(&oldmm->mmap_sem);
@@ -383,55 +501,15 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
 
 	prev = NULL;
 	for (mpnt = oldmm->mmap; mpnt; mpnt = mpnt->vm_next) {
-		struct file *file;
-
 		if (mpnt->vm_flags & VM_DONTCOPY) {
 			vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
 							-vma_pages(mpnt));
 			continue;
 		}
-		charge = 0;
-		if (mpnt->vm_flags & VM_ACCOUNT) {
-			unsigned long len = vma_pages(mpnt);
-
-			if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
-				goto fail_nomem;
-			charge = len;
-		}
-		tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
-		if (!tmp)
-			goto fail_nomem;
-		*tmp = *mpnt;
-		INIT_LIST_HEAD(&tmp->anon_vma_chain);
-		retval = vma_dup_policy(mpnt, tmp);
-		if (retval)
-			goto fail_nomem_policy;
-		tmp->vm_mm = mm;
-		if (anon_vma_fork(tmp, mpnt))
-			goto fail_nomem_anon_vma_fork;
-		tmp->vm_flags &= ~VM_LOCKED;
-		tmp->vm_next = tmp->vm_prev = NULL;
-		file = tmp->vm_file;
-		if (file) {
-			struct inode *inode = file_inode(file);
-			struct address_space *mapping = file->f_mapping;
-
-			get_file(file);
-			if (tmp->vm_flags & VM_DENYWRITE)
-				atomic_dec(&inode->i_writecount);
-			mutex_lock(&mapping->i_mmap_mutex);
-			if (tmp->vm_flags & VM_SHARED)
-				mapping->i_mmap_writable++;
-			flush_dcache_mmap_lock(mapping);
-			/* insert tmp into the share list, just after mpnt */
-			if (unlikely(tmp->vm_flags & VM_NONLINEAR))
-				vma_nonlinear_insert(tmp,
-						&mapping->i_mmap_nonlinear);
-			else
-				vma_interval_tree_insert_after(tmp, mpnt,
-							&mapping->i_mmap);
-			flush_dcache_mmap_unlock(mapping);
-			mutex_unlock(&mapping->i_mmap_mutex);
+		tmp = dup_vma(mm, oldmm, mpnt);
+		if (!tmp) {
+			retval = -ENOMEM;
+			goto out;
 		}
 
 		/*
@@ -463,6 +541,31 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
 		if (retval)
 			goto out;
 	}
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (oldmm->pax_flags & MF_PAX_SEGMEXEC) {
+		struct vm_area_struct *mpnt_m;
+
+		for (mpnt = oldmm->mmap, mpnt_m = mm->mmap; mpnt; mpnt = mpnt->vm_next, mpnt_m = mpnt_m->vm_next) {
+			BUG_ON(!mpnt_m || mpnt_m->vm_mirror || mpnt->vm_mm != oldmm || mpnt_m->vm_mm != mm);
+
+			if (!mpnt->vm_mirror)
+				continue;
+
+			if (mpnt->vm_end <= SEGMEXEC_TASK_SIZE) {
+				BUG_ON(mpnt->vm_mirror->vm_mirror != mpnt);
+				mpnt->vm_mirror = mpnt_m;
+			} else {
+				BUG_ON(mpnt->vm_mirror->vm_mirror == mpnt || mpnt->vm_mirror->vm_mirror->vm_mm != mm);
+				mpnt_m->vm_mirror = mpnt->vm_mirror->vm_mirror;
+				mpnt_m->vm_mirror->vm_mirror = mpnt_m;
+				mpnt->vm_mirror->vm_mirror = mpnt;
+			}
+		}
+		BUG_ON(mpnt_m);
+	}
+#endif
+
 	/* a new mm has just been created */
 	arch_dup_mmap(oldmm, mm);
 	retval = 0;
@@ -472,14 +575,6 @@ out:
 	up_write(&oldmm->mmap_sem);
 	uprobe_end_dup_mmap();
 	return retval;
-fail_nomem_anon_vma_fork:
-	mpol_put(vma_policy(tmp));
-fail_nomem_policy:
-	kmem_cache_free(vm_area_cachep, tmp);
-fail_nomem:
-	retval = -ENOMEM;
-	vm_unacct_memory(charge);
-	goto out;
 }
 
 static inline int mm_alloc_pgd(struct mm_struct *mm)
@@ -698,8 +793,8 @@ struct mm_struct *mm_access(struct task_struct *task, unsigned int mode)
 		return ERR_PTR(err);
 
 	mm = get_task_mm(task);
-	if (mm && mm != current->mm &&
-			!ptrace_may_access(task, mode)) {
+	if (mm && ((mm != current->mm && !ptrace_may_access(task, mode)) ||
+		  (mode == PTRACE_MODE_ATTACH && (gr_handle_proc_ptrace(task) || gr_acl_handle_procpidmem(task))))) {
 		mmput(mm);
 		mm = ERR_PTR(-EACCES);
 	}
@@ -918,13 +1013,20 @@ static int copy_fs(unsigned long clone_flags, struct task_struct *tsk)
 			spin_unlock(&fs->lock);
 			return -EAGAIN;
 		}
-		fs->users++;
+		atomic_inc(&fs->users);
 		spin_unlock(&fs->lock);
 		return 0;
 	}
 	tsk->fs = copy_fs_struct(fs);
 	if (!tsk->fs)
 		return -ENOMEM;
+	/* Carry through gr_chroot_dentry and is_chrooted instead
+	   of recomputing it here.  Already copied when the task struct
+	   is duplicated.  This allows pivot_root to not be treated as
+	   a chroot
+	*/
+	//gr_set_chroot_entries(tsk, &tsk->fs->root);
+
 	return 0;
 }
 
@@ -1133,7 +1235,7 @@ init_task_pid(struct task_struct *task, enum pid_type type, struct pid *pid)
  * parts of the process environment (as per the clone
  * flags). The actual kick-off is left to the caller.
  */
-static struct task_struct *copy_process(unsigned long clone_flags,
+static __latent_entropy struct task_struct *copy_process(unsigned long clone_flags,
 					unsigned long stack_start,
 					unsigned long stack_size,
 					int __user *child_tidptr,
@@ -1205,6 +1307,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
 #endif
 	retval = -EAGAIN;
+
+	gr_learn_resource(p, RLIMIT_NPROC, atomic_read(&p->real_cred->user->processes), 0);
+
 	if (atomic_read(&p->real_cred->user->processes) >=
 			task_rlimit(p, RLIMIT_NPROC)) {
 		if (p->real_cred->user != INIT_USER &&
@@ -1452,6 +1557,11 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 		goto bad_fork_free_pid;
 	}
 
+	/* synchronizes with gr_set_acls()
+	   we need to call this past the point of no return for fork()
+	*/
+	gr_copy_label(p);
+
 	if (likely(p->pid)) {
 		ptrace_init_task(p, (clone_flags & CLONE_PTRACE) || trace);
 
@@ -1541,6 +1651,8 @@ bad_fork_cleanup_count:
 bad_fork_free:
 	free_task(p);
 fork_out:
+	gr_log_forkfail(retval);
+
 	return ERR_PTR(retval);
 }
 
@@ -1602,6 +1714,7 @@ long do_fork(unsigned long clone_flags,
 
 	p = copy_process(clone_flags, stack_start, stack_size,
 			 child_tidptr, NULL, trace);
+	add_latent_entropy();
 	/*
 	 * Do this prior waking up the new thread - the thread pointer
 	 * might get invalid after that point, if the thread exits quickly.
@@ -1618,6 +1731,8 @@ long do_fork(unsigned long clone_flags,
 		if (clone_flags & CLONE_PARENT_SETTID)
 			put_user(nr, parent_tidptr);
 
+		gr_handle_brute_check();
+
 		if (clone_flags & CLONE_VFORK) {
 			p->vfork_done = &vfork;
 			init_completion(&vfork);
@@ -1736,7 +1851,7 @@ void __init proc_caches_init(void)
 	mm_cachep = kmem_cache_create("mm_struct",
 			sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN,
 			SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK, NULL);
-	vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC);
+	vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC | SLAB_NO_SANITIZE);
 	mmap_init();
 	nsproxy_cache_init();
 }
@@ -1776,7 +1891,7 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp)
 		return 0;
 
 	/* don't need lock here; in the worst case we'll do useless copy */
-	if (fs->users == 1)
+	if (atomic_read(&fs->users) == 1)
 		return 0;
 
 	*new_fsp = copy_fs_struct(fs);
@@ -1883,7 +1998,8 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
 			fs = current->fs;
 			spin_lock(&fs->lock);
 			current->fs = new_fs;
-			if (--fs->users)
+			gr_set_chroot_entries(current, &current->fs->root);
+			if (atomic_dec_return(&fs->users))
 				new_fs = NULL;
 			else
 				new_fs = fs;
diff --git a/kernel/futex.c b/kernel/futex.c
index b632b5f..0aa434d 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -202,7 +202,7 @@ struct futex_pi_state {
 	atomic_t refcount;
 
 	union futex_key key;
-};
+} __randomize_layout;
 
 /**
  * struct futex_q - The hashed futex queue entry, one per waiting task
@@ -236,7 +236,7 @@ struct futex_q {
 	struct rt_mutex_waiter *rt_waiter;
 	union futex_key *requeue_pi_key;
 	u32 bitset;
-};
+} __randomize_layout;
 
 static const struct futex_q futex_q_init = {
 	/* list gets initialized in queue_me()*/
@@ -394,6 +394,11 @@ get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw)
 	struct page *page, *page_head;
 	int err, ro = 0;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && address >= SEGMEXEC_TASK_SIZE)
+		return -EFAULT;
+#endif
+
 	/*
 	 * The futex address must be "naturally" aligned.
 	 */
@@ -593,7 +598,7 @@ static int cmpxchg_futex_value_locked(u32 *curval, u32 __user *uaddr,
 
 static int get_futex_value_locked(u32 *dest, u32 __user *from)
 {
-	int ret;
+	unsigned long ret;
 
 	pagefault_disable();
 	ret = __copy_from_user_inatomic(dest, from, sizeof(u32));
@@ -2628,6 +2633,7 @@ static int futex_wait_requeue_pi(u32 __user *uaddr, unsigned int flags,
 	 * shared futexes. We need to compare the keys:
 	 */
 	if (match_futex(&q.key, &key2)) {
+		queue_unlock(hb);
 		ret = -EINVAL;
 		goto out_put_keys;
 	}
@@ -3033,6 +3039,7 @@ static void __init futex_detect_cmpxchg(void)
 {
 #ifndef CONFIG_HAVE_FUTEX_CMPXCHG
 	u32 curval;
+	mm_segment_t oldfs;
 
 	/*
 	 * This will fail and we want it. Some arch implementations do
@@ -3044,8 +3051,11 @@ static void __init futex_detect_cmpxchg(void)
 	 * implementation, the non-functional ones will return
 	 * -ENOSYS.
 	 */
+	oldfs = get_fs();
+	set_fs(USER_DS);
 	if (cmpxchg_futex_value_locked(&curval, NULL, 0, 0) == -EFAULT)
 		futex_cmpxchg_enabled = 1;
+	set_fs(oldfs);
 #endif
 }
 
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index 55c8c93..9ba7ad6 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -32,7 +32,7 @@ fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry,
 	return 0;
 }
 
-static void __user *futex_uaddr(struct robust_list __user *entry,
+static void __user __intentional_overflow(-1) *futex_uaddr(struct robust_list __user *entry,
 				compat_long_t futex_offset)
 {
 	compat_uptr_t base = ptr_to_compat(entry);
diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c
index b358a80..fc25240 100644
--- a/kernel/gcov/base.c
+++ b/kernel/gcov/base.c
@@ -114,11 +114,6 @@ void gcov_enable_events(void)
 }
 
 #ifdef CONFIG_MODULES
-static inline int within(void *addr, void *start, unsigned long size)
-{
-	return ((addr >= start) && (addr < start + size));
-}
-
 /* Update list and generate events when modules are unloaded. */
 static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
 				void *data)
@@ -133,7 +128,7 @@ static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
 
 	/* Remove entries located in module from linked list. */
 	while ((info = gcov_info_next(info))) {
-		if (within(info, mod->module_core, mod->core_size)) {
+		if (within_module_core_rw((unsigned long)info, mod)) {
 			gcov_info_unlink(prev, info);
 			if (gcov_events_enabled)
 				gcov_event(GCOV_REMOVE, info);
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 3ab2899..c6ad010 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1449,7 +1449,7 @@ void hrtimer_peek_ahead_timers(void)
 	local_irq_restore(flags);
 }
 
-static void run_hrtimer_softirq(struct softirq_action *h)
+static __latent_entropy void run_hrtimer_softirq(void)
 {
 	hrtimer_peek_ahead_timers();
 }
diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index a82170e..5b01e7f 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -191,12 +191,13 @@ static int irq_work_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block cpu_notify;
+static struct notifier_block cpu_notify = {
+	.notifier_call = irq_work_cpu_notify,
+	.priority = 0,
+};
 
 static __init int irq_work_init_cpu_notifier(void)
 {
-	cpu_notify.notifier_call = irq_work_cpu_notify;
-	cpu_notify.priority = 0;
 	register_cpu_notifier(&cpu_notify);
 	return 0;
 }
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 9019f15..9a3c42e 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -14,6 +14,7 @@
 #include <linux/err.h>
 #include <linux/static_key.h>
 #include <linux/jump_label_ratelimit.h>
+#include <linux/mm.h>
 
 #ifdef HAVE_JUMP_LABEL
 
@@ -51,7 +52,9 @@ jump_label_sort_entries(struct jump_entry *start, struct jump_entry *stop)
 
 	size = (((unsigned long)stop - (unsigned long)start)
 					/ sizeof(struct jump_entry));
+	pax_open_kernel();
 	sort(start, size, sizeof(struct jump_entry), jump_label_cmp, NULL);
+	pax_close_kernel();
 }
 
 static void jump_label_update(struct static_key *key, int enable);
@@ -363,10 +366,12 @@ static void jump_label_invalidate_module_init(struct module *mod)
 	struct jump_entry *iter_stop = iter_start + mod->num_jump_entries;
 	struct jump_entry *iter;
 
+	pax_open_kernel();
 	for (iter = iter_start; iter < iter_stop; iter++) {
 		if (within_module_init(iter->code, mod))
 			iter->code = 0;
 	}
+	pax_close_kernel();
 }
 
 static int
diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
index cb0cf37..b69e161 100644
--- a/kernel/kallsyms.c
+++ b/kernel/kallsyms.c
@@ -11,6 +11,9 @@
  *      Changed the compression method from stem compression to "table lookup"
  *      compression (see scripts/kallsyms.c for a more complete description)
  */
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+#define __INCLUDED_BY_HIDESYM 1
+#endif
 #include <linux/kallsyms.h>
 #include <linux/module.h>
 #include <linux/init.h>
@@ -54,12 +57,33 @@ extern const unsigned long kallsyms_markers[] __weak;
 
 static inline int is_kernel_inittext(unsigned long addr)
 {
+	if (system_state != SYSTEM_BOOTING)
+		return 0;
+
 	if (addr >= (unsigned long)_sinittext
 	    && addr <= (unsigned long)_einittext)
 		return 1;
 	return 0;
 }
 
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+#ifdef CONFIG_MODULES
+static inline int is_module_text(unsigned long addr)
+{
+	if ((unsigned long)MODULES_EXEC_VADDR <= addr && addr <= (unsigned long)MODULES_EXEC_END)
+		return 1;
+
+	addr = ktla_ktva(addr);
+	return (unsigned long)MODULES_EXEC_VADDR <= addr && addr <= (unsigned long)MODULES_EXEC_END;
+}
+#else
+static inline int is_module_text(unsigned long addr)
+{
+	return 0;
+}
+#endif
+#endif
+
 static inline int is_kernel_text(unsigned long addr)
 {
 	if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext) ||
@@ -70,13 +94,28 @@ static inline int is_kernel_text(unsigned long addr)
 
 static inline int is_kernel(unsigned long addr)
 {
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	if (is_kernel_text(addr) || is_kernel_inittext(addr))
+		return 1;
+
+	if (ktla_ktva((unsigned long)_text) <= addr && addr < (unsigned long)_end)
+#else
 	if (addr >= (unsigned long)_stext && addr <= (unsigned long)_end)
+#endif
+
 		return 1;
 	return in_gate_area_no_mm(addr);
 }
 
 static int is_ksym_addr(unsigned long addr)
 {
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	if (is_module_text(addr))
+		return 0;
+#endif
+
 	if (all_var)
 		return is_kernel(addr);
 
@@ -481,7 +520,6 @@ static unsigned long get_ksymbol_core(struct kallsym_iter *iter)
 
 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)
 {
-	iter->name[0] = '\0';
 	iter->nameoff = get_symbol_offset(new_pos);
 	iter->pos = new_pos;
 }
@@ -529,6 +567,11 @@ static int s_show(struct seq_file *m, void *p)
 {
 	struct kallsym_iter *iter = m->private;
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	if (!uid_eq(current_uid(), GLOBAL_ROOT_UID))
+		return 0;
+#endif
+
 	/* Some debugging symbols have no name.  Ignore them. */
 	if (!iter->name[0])
 		return 0;
@@ -542,6 +585,7 @@ static int s_show(struct seq_file *m, void *p)
 		 */
 		type = iter->exported ? toupper(iter->type) :
 					tolower(iter->type);
+
 		seq_printf(m, "%pK %c %s\t[%s]\n", (void *)iter->value,
 			   type, iter->name, iter->module_name);
 	} else
@@ -567,7 +611,7 @@ static int kallsyms_open(struct inode *inode, struct file *file)
 	struct kallsym_iter *iter;
 	int ret;
 
-	iter = kmalloc(sizeof(*iter), GFP_KERNEL);
+	iter = kzalloc(sizeof(*iter), GFP_KERNEL);
 	if (!iter)
 		return -ENOMEM;
 	reset_iter(iter, 0);
diff --git a/kernel/kcmp.c b/kernel/kcmp.c
index e30ac0f..a7fcafb 100644
--- a/kernel/kcmp.c
+++ b/kernel/kcmp.c
@@ -44,11 +44,12 @@ static long kptr_obfuscate(long v, int type)
  */
 static int kcmp_ptr(void *v1, void *v2, enum kcmp_type type)
 {
-	long ret;
+	long t1, t2;
 
-	ret = kptr_obfuscate((long)v1, type) - kptr_obfuscate((long)v2, type);
+	t1 = kptr_obfuscate((long)v1, type);
+	t2 = kptr_obfuscate((long)v2, type);
 
-	return (ret < 0) | ((ret > 0) << 1);
+	return (t1 < t2) | ((t1 > t2) << 1);
 }
 
 /* The caller must have pinned the task */
@@ -99,6 +100,10 @@ SYSCALL_DEFINE5(kcmp, pid_t, pid1, pid_t, pid2, int, type,
 	struct task_struct *task1, *task2;
 	int ret;
 
+#ifdef CONFIG_GRKERNSEC
+	return -ENOSYS;
+#endif
+
 	rcu_read_lock();
 
 	/*
diff --git a/kernel/kexec.c b/kernel/kexec.c
index 4b8f0c9..fffd0df 100644
--- a/kernel/kexec.c
+++ b/kernel/kexec.c
@@ -1045,7 +1045,8 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry,
 		       compat_ulong_t, flags)
 {
 	struct compat_kexec_segment in;
-	struct kexec_segment out, __user *ksegments;
+	struct kexec_segment out;
+	struct kexec_segment __user *ksegments;
 	unsigned long i, result;
 
 	/* Don't allow clients that don't understand the native
diff --git a/kernel/kmod.c b/kernel/kmod.c
index 8637e04..8b1d0d8 100644
--- a/kernel/kmod.c
+++ b/kernel/kmod.c
@@ -75,7 +75,7 @@ static void free_modprobe_argv(struct subprocess_info *info)
 	kfree(info->argv);
 }
 
-static int call_modprobe(char *module_name, int wait)
+static int call_modprobe(char *module_name, char *module_param, int wait)
 {
 	struct subprocess_info *info;
 	static char *envp[] = {
@@ -85,7 +85,7 @@ static int call_modprobe(char *module_name, int wait)
 		NULL
 	};
 
-	char **argv = kmalloc(sizeof(char *[5]), GFP_KERNEL);
+	char **argv = kmalloc(sizeof(char *[6]), GFP_KERNEL);
 	if (!argv)
 		goto out;
 
@@ -97,7 +97,8 @@ static int call_modprobe(char *module_name, int wait)
 	argv[1] = "-q";
 	argv[2] = "--";
 	argv[3] = module_name;	/* check free_modprobe_argv() */
-	argv[4] = NULL;
+	argv[4] = module_param;
+	argv[5] = NULL;
 
 	info = call_usermodehelper_setup(modprobe_path, argv, envp, GFP_KERNEL,
 					 NULL, free_modprobe_argv, NULL);
@@ -129,9 +130,8 @@ out:
  * If module auto-loading support is disabled then this function
  * becomes a no-operation.
  */
-int __request_module(bool wait, const char *fmt, ...)
+static int ____request_module(bool wait, char *module_param, const char *fmt, va_list ap)
 {
-	va_list args;
 	char module_name[MODULE_NAME_LEN];
 	unsigned int max_modprobes;
 	int ret;
@@ -150,9 +150,7 @@ int __request_module(bool wait, const char *fmt, ...)
 	if (!modprobe_path[0])
 		return 0;
 
-	va_start(args, fmt);
-	ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args);
-	va_end(args);
+	ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, ap);
 	if (ret >= MODULE_NAME_LEN)
 		return -ENAMETOOLONG;
 
@@ -160,6 +158,20 @@ int __request_module(bool wait, const char *fmt, ...)
 	if (ret)
 		return ret;
 
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+	if (uid_eq(current_uid(), GLOBAL_ROOT_UID)) {
+		/* hack to workaround consolekit/udisks stupidity */
+		read_lock(&tasklist_lock);
+		if (!strcmp(current->comm, "mount") &&
+		    current->real_parent && !strncmp(current->real_parent->comm, "udisk", 5)) {
+			read_unlock(&tasklist_lock);
+			printk(KERN_ALERT "grsec: denied attempt to auto-load fs module %.64s by udisks\n", module_name);
+			return -EPERM;
+		}
+		read_unlock(&tasklist_lock);
+	}
+#endif
+
 	/* If modprobe needs a service that is in a module, we get a recursive
 	 * loop.  Limit the number of running kmod threads to max_threads/2 or
 	 * MAX_KMOD_CONCURRENT, whichever is the smaller.  A cleaner method
@@ -188,11 +200,52 @@ int __request_module(bool wait, const char *fmt, ...)
 
 	trace_module_request(module_name, wait, _RET_IP_);
 
-	ret = call_modprobe(module_name, wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC);
+	ret = call_modprobe(module_name, module_param, wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC);
 
 	atomic_dec(&kmod_concurrent);
 	return ret;
 }
+
+int ___request_module(bool wait, char *module_param, const char *fmt, ...)
+{
+	va_list args;
+	int ret;
+
+	va_start(args, fmt);
+	ret = ____request_module(wait, module_param, fmt, args);
+	va_end(args);
+
+	return ret;
+}
+
+int __request_module(bool wait, const char *fmt, ...)
+{
+	va_list args;
+	int ret;
+
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+	if (!uid_eq(current_uid(), GLOBAL_ROOT_UID)) {
+		char module_param[MODULE_NAME_LEN];
+
+		memset(module_param, 0, sizeof(module_param));
+
+		snprintf(module_param, sizeof(module_param) - 1, "grsec_modharden_normal%u_", GR_GLOBAL_UID(current_uid()));
+
+		va_start(args, fmt);
+		ret = ____request_module(wait, module_param, fmt, args);
+		va_end(args);
+
+		return ret;
+	}
+#endif
+
+	va_start(args, fmt);
+	ret = ____request_module(wait, NULL, fmt, args);
+	va_end(args);
+
+	return ret;
+}
+
 EXPORT_SYMBOL(__request_module);
 #endif /* CONFIG_MODULES */
 
@@ -218,6 +271,20 @@ static int ____call_usermodehelper(void *data)
 	 */
 	set_user_nice(current, 0);
 
+#ifdef CONFIG_GRKERNSEC
+	/* this is race-free as far as userland is concerned as we copied
+	   out the path to be used prior to this point and are now operating
+	   on that copy
+	*/
+	if ((strncmp(sub_info->path, "/sbin/", 6) && strncmp(sub_info->path, "/usr/lib/", 9) &&
+	     strncmp(sub_info->path, "/lib/", 5) && strncmp(sub_info->path, "/lib64/", 7) &&
+	     strcmp(sub_info->path, "/usr/share/apport/apport")) || strstr(sub_info->path, "..")) {
+		printk(KERN_ALERT "grsec: denied exec of usermode helper binary %.950s located outside of /sbin and system library paths\n", sub_info->path);
+		retval = -EPERM;
+		goto fail;
+	}
+#endif
+
 	retval = -ENOMEM;
 	new = prepare_kernel_cred(current);
 	if (!new)
@@ -240,8 +307,8 @@ static int ____call_usermodehelper(void *data)
 	commit_creds(new);
 
 	retval = do_execve(getname_kernel(sub_info->path),
-			   (const char __user *const __user *)sub_info->argv,
-			   (const char __user *const __user *)sub_info->envp);
+			   (const char __user *const __force_user *)sub_info->argv,
+			   (const char __user *const __force_user *)sub_info->envp);
 	if (!retval)
 		return 0;
 
@@ -260,6 +327,10 @@ static int call_helper(void *data)
 
 static void call_usermodehelper_freeinfo(struct subprocess_info *info)
 {
+#ifdef CONFIG_GRKERNSEC
+	kfree(info->path);
+	info->path = info->origpath;
+#endif
 	if (info->cleanup)
 		(*info->cleanup)(info);
 	kfree(info);
@@ -300,7 +371,7 @@ static int wait_for_helper(void *data)
 		 *
 		 * Thus the __user pointer cast is valid here.
 		 */
-		sys_wait4(pid, (int __user *)&ret, 0, NULL);
+		sys_wait4(pid, (int __force_user *)&ret, 0, NULL);
 
 		/*
 		 * If ret is 0, either ____call_usermodehelper failed and the
@@ -539,7 +610,12 @@ struct subprocess_info *call_usermodehelper_setup(char *path, char **argv,
 		goto out;
 
 	INIT_WORK(&sub_info->work, __call_usermodehelper);
+#ifdef CONFIG_GRKERNSEC
+	sub_info->origpath = path;
+	sub_info->path = kstrdup(path, gfp_mask);
+#else
 	sub_info->path = path;
+#endif
 	sub_info->argv = argv;
 	sub_info->envp = envp;
 
@@ -647,7 +723,7 @@ EXPORT_SYMBOL(call_usermodehelper);
 static int proc_cap_handler(struct ctl_table *table, int write,
 			 void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table t;
+	ctl_table_no_const t;
 	unsigned long cap_array[_KERNEL_CAPABILITY_U32S];
 	kernel_cap_t new_cap;
 	int err, i;
diff --git a/kernel/kprobes.c b/kernel/kprobes.c
index 734e9a7..0a313b8 100644
--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -31,6 +31,9 @@
  *		<jkenisto@us.ibm.com> and Prasanna S Panchamukhi
  *		<prasanna@in.ibm.com> added function-return probes.
  */
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+#define __INCLUDED_BY_HIDESYM 1
+#endif
 #include <linux/kprobes.h>
 #include <linux/hash.h>
 #include <linux/init.h>
@@ -122,12 +125,12 @@ enum kprobe_slot_state {
 
 static void *alloc_insn_page(void)
 {
-	return module_alloc(PAGE_SIZE);
+	return module_alloc_exec(PAGE_SIZE);
 }
 
 static void free_insn_page(void *page)
 {
-	module_free(NULL, page);
+	module_free_exec(NULL, page);
 }
 
 struct kprobe_insn_cache kprobe_insn_slots = {
@@ -2176,11 +2179,11 @@ static void report_probe(struct seq_file *pi, struct kprobe *p,
 		kprobe_type = "k";
 
 	if (sym)
-		seq_printf(pi, "%p  %s  %s+0x%x  %s ",
+		seq_printf(pi, "%pK  %s  %s+0x%x  %s ",
 			p->addr, kprobe_type, sym, offset,
 			(modname ? modname : " "));
 	else
-		seq_printf(pi, "%p  %s  %p ",
+		seq_printf(pi, "%pK  %s  %pK ",
 			p->addr, kprobe_type, p->addr);
 
 	if (!pp)
diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
index 6683cce..daf8999 100644
--- a/kernel/ksysfs.c
+++ b/kernel/ksysfs.c
@@ -50,6 +50,8 @@ static ssize_t uevent_helper_store(struct kobject *kobj,
 {
 	if (count+1 > UEVENT_HELPER_PATH_LEN)
 		return -ENOENT;
+	if (!capable(CAP_SYS_ADMIN))
+		return -EPERM;
 	memcpy(uevent_helper, buf, count);
 	uevent_helper[count] = '\0';
 	if (count && uevent_helper[count-1] == '\n')
@@ -176,7 +178,7 @@ static ssize_t notes_read(struct file *filp, struct kobject *kobj,
 	return count;
 }
 
-static struct bin_attribute notes_attr = {
+static bin_attribute_no_const notes_attr __read_only = {
 	.attr = {
 		.name = "notes",
 		.mode = S_IRUGO,
diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
index d24e433..fa04fb8 100644
--- a/kernel/locking/lockdep.c
+++ b/kernel/locking/lockdep.c
@@ -597,6 +597,10 @@ static int static_obj(void *obj)
 		      end   = (unsigned long) &_end,
 		      addr  = (unsigned long) obj;
 
+#ifdef CONFIG_PAX_KERNEXEC
+	start = ktla_ktva(start);
+#endif
+
 	/*
 	 * static variable?
 	 */
@@ -738,6 +742,7 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
 	if (!static_obj(lock->key)) {
 		debug_locks_off();
 		printk("INFO: trying to register non-static key.\n");
+		printk("lock:%pS key:%pS.\n", lock, lock->key);
 		printk("the code is fine but needs lockdep annotation.\n");
 		printk("turning off the locking correctness validator.\n");
 		dump_stack();
@@ -3079,7 +3084,7 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
 		if (!class)
 			return 0;
 	}
-	atomic_inc((atomic_t *)&class->ops);
+	atomic_long_inc_unchecked((atomic_long_unchecked_t *)&class->ops);
 	if (very_verbose(class)) {
 		printk("\nacquire class [%p] %s", class->key, class->name);
 		if (class->name_version > 1)
diff --git a/kernel/locking/lockdep_proc.c b/kernel/locking/lockdep_proc.c
index ef43ac4..2720dfa 100644
--- a/kernel/locking/lockdep_proc.c
+++ b/kernel/locking/lockdep_proc.c
@@ -65,7 +65,7 @@ static int l_show(struct seq_file *m, void *v)
 		return 0;
 	}
 
-	seq_printf(m, "%p", class->key);
+	seq_printf(m, "%pK", class->key);
 #ifdef CONFIG_DEBUG_LOCKDEP
 	seq_printf(m, " OPS:%8ld", class->ops);
 #endif
@@ -83,7 +83,7 @@ static int l_show(struct seq_file *m, void *v)
 
 	list_for_each_entry(entry, &class->locks_after, entry) {
 		if (entry->distance == 1) {
-			seq_printf(m, " -> [%p] ", entry->class->key);
+			seq_printf(m, " -> [%pK] ", entry->class->key);
 			print_name(m, entry->class);
 			seq_puts(m, "\n");
 		}
@@ -152,7 +152,7 @@ static int lc_show(struct seq_file *m, void *v)
 		if (!class->key)
 			continue;
 
-		seq_printf(m, "[%p] ", class->key);
+		seq_printf(m, "[%pK] ", class->key);
 		print_name(m, class);
 		seq_puts(m, "\n");
 	}
@@ -496,7 +496,7 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
 		if (!i)
 			seq_line(m, '-', 40-namelen, namelen);
 
-		snprintf(ip, sizeof(ip), "[<%p>]",
+		snprintf(ip, sizeof(ip), "[<%pK>]",
 				(void *)class->contention_point[i]);
 		seq_printf(m, "%40s %14lu %29s %pS\n",
 			   name, stats->contention_point[i],
@@ -511,7 +511,7 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
 		if (!i)
 			seq_line(m, '-', 40-namelen, namelen);
 
-		snprintf(ip, sizeof(ip), "[<%p>]",
+		snprintf(ip, sizeof(ip), "[<%pK>]",
 				(void *)class->contending_point[i]);
 		seq_printf(m, "%40s %14lu %29s %pS\n",
 			   name, stats->contending_point[i],
diff --git a/kernel/locking/mcs_spinlock.c b/kernel/locking/mcs_spinlock.c
index be9ee15..39d6233 100644
--- a/kernel/locking/mcs_spinlock.c
+++ b/kernel/locking/mcs_spinlock.c
@@ -102,7 +102,7 @@ bool osq_lock(struct optimistic_spin_queue *lock)
 
 	prev = decode_cpu(old);
 	node->prev = prev;
-	ACCESS_ONCE(prev->next) = node;
+	ACCESS_ONCE_RW(prev->next) = node;
 
 	/*
 	 * Normally @prev is untouchable after the above store; because at that
@@ -174,8 +174,8 @@ unqueue:
 	 * it will wait in Step-A.
 	 */
 
-	ACCESS_ONCE(next->prev) = prev;
-	ACCESS_ONCE(prev->next) = next;
+	ACCESS_ONCE_RW(next->prev) = prev;
+	ACCESS_ONCE_RW(prev->next) = next;
 
 	return false;
 }
@@ -197,13 +197,13 @@ void osq_unlock(struct optimistic_spin_queue *lock)
 	node = this_cpu_ptr(&osq_node);
 	next = xchg(&node->next, NULL);
 	if (next) {
-		ACCESS_ONCE(next->locked) = 1;
+		ACCESS_ONCE_RW(next->locked) = 1;
 		return;
 	}
 
 	next = osq_wait_next(lock, node, NULL);
 	if (next)
-		ACCESS_ONCE(next->locked) = 1;
+		ACCESS_ONCE_RW(next->locked) = 1;
 }
 
 #endif
diff --git a/kernel/locking/mcs_spinlock.h b/kernel/locking/mcs_spinlock.h
index 74356dc..48dd5e1 100644
--- a/kernel/locking/mcs_spinlock.h
+++ b/kernel/locking/mcs_spinlock.h
@@ -81,7 +81,7 @@ void mcs_spin_lock(struct mcs_spinlock **lock, struct mcs_spinlock *node)
 		 */
 		return;
 	}
-	ACCESS_ONCE(prev->next) = node;
+	ACCESS_ONCE_RW(prev->next) = node;
 
 	/* Wait until the lock holder passes the lock down. */
 	arch_mcs_spin_lock_contended(&node->locked);
diff --git a/kernel/locking/mutex-debug.c b/kernel/locking/mutex-debug.c
index 5cf6731..ce3bc5a 100644
--- a/kernel/locking/mutex-debug.c
+++ b/kernel/locking/mutex-debug.c
@@ -49,21 +49,21 @@ void debug_mutex_free_waiter(struct mutex_waiter *waiter)
 }
 
 void debug_mutex_add_waiter(struct mutex *lock, struct mutex_waiter *waiter,
-			    struct thread_info *ti)
+			    struct task_struct *task)
 {
 	SMP_DEBUG_LOCKS_WARN_ON(!spin_is_locked(&lock->wait_lock));
 
 	/* Mark the current thread as blocked on the lock: */
-	ti->task->blocked_on = waiter;
+	task->blocked_on = waiter;
 }
 
 void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
-			 struct thread_info *ti)
+			 struct task_struct *task)
 {
 	DEBUG_LOCKS_WARN_ON(list_empty(&waiter->list));
-	DEBUG_LOCKS_WARN_ON(waiter->task != ti->task);
-	DEBUG_LOCKS_WARN_ON(ti->task->blocked_on != waiter);
-	ti->task->blocked_on = NULL;
+	DEBUG_LOCKS_WARN_ON(waiter->task != task);
+	DEBUG_LOCKS_WARN_ON(task->blocked_on != waiter);
+	task->blocked_on = NULL;
 
 	list_del_init(&waiter->list);
 	waiter->task = NULL;
diff --git a/kernel/locking/mutex-debug.h b/kernel/locking/mutex-debug.h
index 0799fd3..d06ae3b 100644
--- a/kernel/locking/mutex-debug.h
+++ b/kernel/locking/mutex-debug.h
@@ -20,9 +20,9 @@ extern void debug_mutex_wake_waiter(struct mutex *lock,
 extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
 extern void debug_mutex_add_waiter(struct mutex *lock,
 				   struct mutex_waiter *waiter,
-				   struct thread_info *ti);
+				   struct task_struct *task);
 extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
-				struct thread_info *ti);
+				struct task_struct *task);
 extern void debug_mutex_unlock(struct mutex *lock);
 extern void debug_mutex_init(struct mutex *lock, const char *name,
 			     struct lock_class_key *key);
diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
index acca2c1..ddeaea8 100644
--- a/kernel/locking/mutex.c
+++ b/kernel/locking/mutex.c
@@ -490,7 +490,7 @@ slowpath:
 		goto skip_wait;
 
 	debug_mutex_lock_common(lock, &waiter);
-	debug_mutex_add_waiter(lock, &waiter, task_thread_info(task));
+	debug_mutex_add_waiter(lock, &waiter, task);
 
 	/* add waiting tasks to the end of the waitqueue (FIFO): */
 	list_add_tail(&waiter.list, &lock->wait_list);
@@ -534,7 +534,7 @@ slowpath:
 		schedule_preempt_disabled();
 		spin_lock_mutex(&lock->wait_lock, flags);
 	}
-	mutex_remove_waiter(lock, &waiter, current_thread_info());
+	mutex_remove_waiter(lock, &waiter, task);
 	/* set it to 0 if there are no waiters left: */
 	if (likely(list_empty(&lock->wait_list)))
 		atomic_set(&lock->count, 0);
@@ -571,7 +571,7 @@ skip_wait:
 	return 0;
 
 err:
-	mutex_remove_waiter(lock, &waiter, task_thread_info(task));
+	mutex_remove_waiter(lock, &waiter, task);
 	spin_unlock_mutex(&lock->wait_lock, flags);
 	debug_mutex_free_waiter(&waiter);
 	mutex_release(&lock->dep_map, 1, ip);
diff --git a/kernel/locking/rtmutex-tester.c b/kernel/locking/rtmutex-tester.c
index 1d96dd0..994ff19 100644
--- a/kernel/locking/rtmutex-tester.c
+++ b/kernel/locking/rtmutex-tester.c
@@ -22,7 +22,7 @@
 #define MAX_RT_TEST_MUTEXES	8
 
 static spinlock_t rttest_lock;
-static atomic_t rttest_event;
+static atomic_unchecked_t rttest_event;
 
 struct test_thread_data {
 	int			opcode;
@@ -63,7 +63,7 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
 
 	case RTTEST_LOCKCONT:
 		td->mutexes[td->opdata] = 1;
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		return 0;
 
 	case RTTEST_RESET:
@@ -76,7 +76,7 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
 		return 0;
 
 	case RTTEST_RESETEVENT:
-		atomic_set(&rttest_event, 0);
+		atomic_set_unchecked(&rttest_event, 0);
 		return 0;
 
 	default:
@@ -93,9 +93,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
 			return ret;
 
 		td->mutexes[id] = 1;
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		rt_mutex_lock(&mutexes[id]);
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		td->mutexes[id] = 4;
 		return 0;
 
@@ -106,9 +106,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
 			return ret;
 
 		td->mutexes[id] = 1;
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		ret = rt_mutex_lock_interruptible(&mutexes[id], 0);
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		td->mutexes[id] = ret ? 0 : 4;
 		return ret ? -EINTR : 0;
 
@@ -117,9 +117,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
 		if (id < 0 || id >= MAX_RT_TEST_MUTEXES || td->mutexes[id] != 4)
 			return ret;
 
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		rt_mutex_unlock(&mutexes[id]);
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		td->mutexes[id] = 0;
 		return 0;
 
@@ -166,7 +166,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
 			break;
 
 		td->mutexes[dat] = 2;
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		break;
 
 	default:
@@ -186,7 +186,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
 			return;
 
 		td->mutexes[dat] = 3;
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		break;
 
 	case RTTEST_LOCKNOWAIT:
@@ -198,7 +198,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
 			return;
 
 		td->mutexes[dat] = 1;
-		td->event = atomic_add_return(1, &rttest_event);
+		td->event = atomic_add_return_unchecked(1, &rttest_event);
 		return;
 
 	default:
diff --git a/kernel/module.c b/kernel/module.c
index 81e727c..a8ea6f9 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -61,6 +61,7 @@
 #include <linux/pfn.h>
 #include <linux/bsearch.h>
 #include <linux/fips.h>
+#include <linux/grsecurity.h>
 #include <uapi/linux/module.h>
 #include "module-internal.h"
 
@@ -157,7 +158,8 @@ static BLOCKING_NOTIFIER_HEAD(module_notify_list);
 
 /* Bounds of module allocation, for speeding __module_address.
  * Protected by module_mutex. */
-static unsigned long module_addr_min = -1UL, module_addr_max = 0;
+static unsigned long module_addr_min_rw = -1UL, module_addr_max_rw = 0;
+static unsigned long module_addr_min_rx = -1UL, module_addr_max_rx = 0;
 
 int register_module_notifier(struct notifier_block * nb)
 {
@@ -324,7 +326,7 @@ bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
 		return true;
 
 	list_for_each_entry_rcu(mod, &modules, list) {
-		struct symsearch arr[] = {
+		struct symsearch modarr[] = {
 			{ mod->syms, mod->syms + mod->num_syms, mod->crcs,
 			  NOT_GPL_ONLY, false },
 			{ mod->gpl_syms, mod->gpl_syms + mod->num_gpl_syms,
@@ -349,7 +351,7 @@ bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
 		if (mod->state == MODULE_STATE_UNFORMED)
 			continue;
 
-		if (each_symbol_in_section(arr, ARRAY_SIZE(arr), mod, fn, data))
+		if (each_symbol_in_section(modarr, ARRAY_SIZE(modarr), mod, fn, data))
 			return true;
 	}
 	return false;
@@ -489,7 +491,7 @@ static int percpu_modalloc(struct module *mod, struct load_info *info)
 	if (!pcpusec->sh_size)
 		return 0;
 
-	if (align > PAGE_SIZE) {
+	if (align-1 >= PAGE_SIZE) {
 		pr_warn("%s: per-cpu alignment %li > %li\n",
 			mod->name, align, PAGE_SIZE);
 		align = PAGE_SIZE;
@@ -1061,7 +1063,7 @@ struct module_attribute module_uevent =
 static ssize_t show_coresize(struct module_attribute *mattr,
 			     struct module_kobject *mk, char *buffer)
 {
-	return sprintf(buffer, "%u\n", mk->mod->core_size);
+	return sprintf(buffer, "%u\n", mk->mod->core_size_rx + mk->mod->core_size_rw);
 }
 
 static struct module_attribute modinfo_coresize =
@@ -1070,7 +1072,7 @@ static struct module_attribute modinfo_coresize =
 static ssize_t show_initsize(struct module_attribute *mattr,
 			     struct module_kobject *mk, char *buffer)
 {
-	return sprintf(buffer, "%u\n", mk->mod->init_size);
+	return sprintf(buffer, "%u\n", mk->mod->init_size_rx +  mk->mod->init_size_rw);
 }
 
 static struct module_attribute modinfo_initsize =
@@ -1162,12 +1164,29 @@ static int check_version(Elf_Shdr *sechdrs,
 		goto bad_version;
 	}
 
+#ifdef CONFIG_GRKERNSEC_RANDSTRUCT
+	/*
+	 * avoid potentially printing jibberish on attempted load
+	 * of a module randomized with a different seed
+	 */
+	pr_warn("no symbol version for %s\n", symname);
+#else
 	pr_warn("%s: no symbol version for %s\n", mod->name, symname);
+#endif
 	return 0;
 
 bad_version:
+#ifdef CONFIG_GRKERNSEC_RANDSTRUCT
+	/*
+	 * avoid potentially printing jibberish on attempted load
+	 * of a module randomized with a different seed
+	 */
+	printk("attempted module disagrees about version of symbol %s\n",
+	       symname);
+#else
 	printk("%s: disagrees about version of symbol %s\n",
 	       mod->name, symname);
+#endif
 	return 0;
 }
 
@@ -1283,7 +1302,7 @@ resolve_symbol_wait(struct module *mod,
  */
 #ifdef CONFIG_SYSFS
 
-#ifdef CONFIG_KALLSYMS
+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
 static inline bool sect_empty(const Elf_Shdr *sect)
 {
 	return !(sect->sh_flags & SHF_ALLOC) || sect->sh_size == 0;
@@ -1423,7 +1442,7 @@ static void add_notes_attrs(struct module *mod, const struct load_info *info)
 {
 	unsigned int notes, loaded, i;
 	struct module_notes_attrs *notes_attrs;
-	struct bin_attribute *nattr;
+	bin_attribute_no_const *nattr;
 
 	/* failed to create section attributes, so can't create notes */
 	if (!mod->sect_attrs)
@@ -1535,7 +1554,7 @@ static void del_usage_links(struct module *mod)
 static int module_add_modinfo_attrs(struct module *mod)
 {
 	struct module_attribute *attr;
-	struct module_attribute *temp_attr;
+	module_attribute_no_const *temp_attr;
 	int error = 0;
 	int i;
 
@@ -1756,21 +1775,21 @@ static void set_section_ro_nx(void *base,
 
 static void unset_module_core_ro_nx(struct module *mod)
 {
-	set_page_attributes(mod->module_core + mod->core_text_size,
-		mod->module_core + mod->core_size,
+	set_page_attributes(mod->module_core_rw,
+		mod->module_core_rw + mod->core_size_rw,
 		set_memory_x);
-	set_page_attributes(mod->module_core,
-		mod->module_core + mod->core_ro_size,
+	set_page_attributes(mod->module_core_rx,
+		mod->module_core_rx + mod->core_size_rx,
 		set_memory_rw);
 }
 
 static void unset_module_init_ro_nx(struct module *mod)
 {
-	set_page_attributes(mod->module_init + mod->init_text_size,
-		mod->module_init + mod->init_size,
+	set_page_attributes(mod->module_init_rw,
+		mod->module_init_rw + mod->init_size_rw,
 		set_memory_x);
-	set_page_attributes(mod->module_init,
-		mod->module_init + mod->init_ro_size,
+	set_page_attributes(mod->module_init_rx,
+		mod->module_init_rx + mod->init_size_rx,
 		set_memory_rw);
 }
 
@@ -1783,14 +1802,14 @@ void set_all_modules_text_rw(void)
 	list_for_each_entry_rcu(mod, &modules, list) {
 		if (mod->state == MODULE_STATE_UNFORMED)
 			continue;
-		if ((mod->module_core) && (mod->core_text_size)) {
-			set_page_attributes(mod->module_core,
-						mod->module_core + mod->core_text_size,
+		if ((mod->module_core_rx) && (mod->core_size_rx)) {
+			set_page_attributes(mod->module_core_rx,
+						mod->module_core_rx + mod->core_size_rx,
 						set_memory_rw);
 		}
-		if ((mod->module_init) && (mod->init_text_size)) {
-			set_page_attributes(mod->module_init,
-						mod->module_init + mod->init_text_size,
+		if ((mod->module_init_rx) && (mod->init_size_rx)) {
+			set_page_attributes(mod->module_init_rx,
+						mod->module_init_rx + mod->init_size_rx,
 						set_memory_rw);
 		}
 	}
@@ -1806,14 +1825,14 @@ void set_all_modules_text_ro(void)
 	list_for_each_entry_rcu(mod, &modules, list) {
 		if (mod->state == MODULE_STATE_UNFORMED)
 			continue;
-		if ((mod->module_core) && (mod->core_text_size)) {
-			set_page_attributes(mod->module_core,
-						mod->module_core + mod->core_text_size,
+		if ((mod->module_core_rx) && (mod->core_size_rx)) {
+			set_page_attributes(mod->module_core_rx,
+						mod->module_core_rx + mod->core_size_rx,
 						set_memory_ro);
 		}
-		if ((mod->module_init) && (mod->init_text_size)) {
-			set_page_attributes(mod->module_init,
-						mod->module_init + mod->init_text_size,
+		if ((mod->module_init_rx) && (mod->init_size_rx)) {
+			set_page_attributes(mod->module_init_rx,
+						mod->module_init_rx + mod->init_size_rx,
 						set_memory_ro);
 		}
 	}
@@ -1864,16 +1883,19 @@ static void free_module(struct module *mod)
 
 	/* This may be NULL, but that's OK */
 	unset_module_init_ro_nx(mod);
-	module_free(mod, mod->module_init);
+	module_free(mod, mod->module_init_rw);
+	module_free_exec(mod, mod->module_init_rx);
 	kfree(mod->args);
 	percpu_modfree(mod);
 
 	/* Free lock-classes: */
-	lockdep_free_key_range(mod->module_core, mod->core_size);
+	lockdep_free_key_range(mod->module_core_rx, mod->core_size_rx);
+	lockdep_free_key_range(mod->module_core_rw, mod->core_size_rw);
 
 	/* Finally, free the core (containing the module structure) */
 	unset_module_core_ro_nx(mod);
-	module_free(mod, mod->module_core);
+	module_free_exec(mod, mod->module_core_rx);
+	module_free(mod, mod->module_core_rw);
 
 #ifdef CONFIG_MPU
 	update_protections(current->mm);
@@ -1942,9 +1964,31 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
 	int ret = 0;
 	const struct kernel_symbol *ksym;
 
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+	int is_fs_load = 0;
+	int register_filesystem_found = 0;
+	char *p;
+
+	p = strstr(mod->args, "grsec_modharden_fs");
+	if (p) {
+		char *endptr = p + sizeof("grsec_modharden_fs") - 1;
+		/* copy \0 as well */
+		memmove(p, endptr, strlen(mod->args) - (unsigned int)(endptr - mod->args) + 1);
+		is_fs_load = 1;
+	}
+#endif
+
 	for (i = 1; i < symsec->sh_size / sizeof(Elf_Sym); i++) {
 		const char *name = info->strtab + sym[i].st_name;
 
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+		/* it's a real shame this will never get ripped and copied
+		   upstream! ;(
+		*/
+		if (is_fs_load && !strcmp(name, "register_filesystem"))
+			register_filesystem_found = 1;
+#endif
+
 		switch (sym[i].st_shndx) {
 		case SHN_COMMON:
 			/* Ignore common symbols */
@@ -1969,7 +2013,9 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
 			ksym = resolve_symbol_wait(mod, info, name);
 			/* Ok if resolved.  */
 			if (ksym && !IS_ERR(ksym)) {
+				pax_open_kernel();
 				sym[i].st_value = ksym->value;
+				pax_close_kernel();
 				break;
 			}
 
@@ -1988,11 +2034,20 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
 				secbase = (unsigned long)mod_percpu(mod);
 			else
 				secbase = info->sechdrs[sym[i].st_shndx].sh_addr;
+			pax_open_kernel();
 			sym[i].st_value += secbase;
+			pax_close_kernel();
 			break;
 		}
 	}
 
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+	if (is_fs_load && !register_filesystem_found) {
+		printk(KERN_ALERT "grsec: Denied attempt to load non-fs module %.64s through mount\n", mod->name);
+		ret = -EPERM;
+	}
+#endif
+
 	return ret;
 }
 
@@ -2076,22 +2131,12 @@ static void layout_sections(struct module *mod, struct load_info *info)
 			    || s->sh_entsize != ~0UL
 			    || strstarts(sname, ".init"))
 				continue;
-			s->sh_entsize = get_offset(mod, &mod->core_size, s, i);
+			if ((s->sh_flags & SHF_WRITE) || !(s->sh_flags & SHF_ALLOC))
+				s->sh_entsize = get_offset(mod, &mod->core_size_rw, s, i);
+			else
+				s->sh_entsize = get_offset(mod, &mod->core_size_rx, s, i);
 			pr_debug("\t%s\n", sname);
 		}
-		switch (m) {
-		case 0: /* executable */
-			mod->core_size = debug_align(mod->core_size);
-			mod->core_text_size = mod->core_size;
-			break;
-		case 1: /* RO: text and ro-data */
-			mod->core_size = debug_align(mod->core_size);
-			mod->core_ro_size = mod->core_size;
-			break;
-		case 3: /* whole core */
-			mod->core_size = debug_align(mod->core_size);
-			break;
-		}
 	}
 
 	pr_debug("Init section allocation order:\n");
@@ -2105,23 +2150,13 @@ static void layout_sections(struct module *mod, struct load_info *info)
 			    || s->sh_entsize != ~0UL
 			    || !strstarts(sname, ".init"))
 				continue;
-			s->sh_entsize = (get_offset(mod, &mod->init_size, s, i)
-					 | INIT_OFFSET_MASK);
+			if ((s->sh_flags & SHF_WRITE) || !(s->sh_flags & SHF_ALLOC))
+				s->sh_entsize = get_offset(mod, &mod->init_size_rw, s, i);
+			else
+				s->sh_entsize = get_offset(mod, &mod->init_size_rx, s, i);
+			s->sh_entsize |= INIT_OFFSET_MASK;
 			pr_debug("\t%s\n", sname);
 		}
-		switch (m) {
-		case 0: /* executable */
-			mod->init_size = debug_align(mod->init_size);
-			mod->init_text_size = mod->init_size;
-			break;
-		case 1: /* RO: text and ro-data */
-			mod->init_size = debug_align(mod->init_size);
-			mod->init_ro_size = mod->init_size;
-			break;
-		case 3: /* whole init */
-			mod->init_size = debug_align(mod->init_size);
-			break;
-		}
 	}
 }
 
@@ -2294,7 +2329,7 @@ static void layout_symtab(struct module *mod, struct load_info *info)
 
 	/* Put symbol section at end of init part of module. */
 	symsect->sh_flags |= SHF_ALLOC;
-	symsect->sh_entsize = get_offset(mod, &mod->init_size, symsect,
+	symsect->sh_entsize = get_offset(mod, &mod->init_size_rx, symsect,
 					 info->index.sym) | INIT_OFFSET_MASK;
 	pr_debug("\t%s\n", info->secstrings + symsect->sh_name);
 
@@ -2311,13 +2346,13 @@ static void layout_symtab(struct module *mod, struct load_info *info)
 	}
 
 	/* Append room for core symbols at end of core part. */
-	info->symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1);
-	info->stroffs = mod->core_size = info->symoffs + ndst * sizeof(Elf_Sym);
-	mod->core_size += strtab_size;
+	info->symoffs = ALIGN(mod->core_size_rx, symsect->sh_addralign ?: 1);
+	info->stroffs = mod->core_size_rx = info->symoffs + ndst * sizeof(Elf_Sym);
+	mod->core_size_rx += strtab_size;
 
 	/* Put string table section at end of init part of module. */
 	strsect->sh_flags |= SHF_ALLOC;
-	strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect,
+	strsect->sh_entsize = get_offset(mod, &mod->init_size_rx, strsect,
 					 info->index.str) | INIT_OFFSET_MASK;
 	pr_debug("\t%s\n", info->secstrings + strsect->sh_name);
 }
@@ -2335,12 +2370,14 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
 	/* Make sure we get permanent strtab: don't use info->strtab. */
 	mod->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
 
+	pax_open_kernel();
+
 	/* Set types up while we still have access to sections. */
 	for (i = 0; i < mod->num_symtab; i++)
 		mod->symtab[i].st_info = elf_type(&mod->symtab[i], info);
 
-	mod->core_symtab = dst = mod->module_core + info->symoffs;
-	mod->core_strtab = s = mod->module_core + info->stroffs;
+	mod->core_symtab = dst = mod->module_core_rx + info->symoffs;
+	mod->core_strtab = s = mod->module_core_rx + info->stroffs;
 	src = mod->symtab;
 	for (ndst = i = 0; i < mod->num_symtab; i++) {
 		if (i == 0 ||
@@ -2352,6 +2389,8 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
 		}
 	}
 	mod->core_num_syms = ndst;
+
+	pax_close_kernel();
 }
 #else
 static inline void layout_symtab(struct module *mod, struct load_info *info)
@@ -2385,17 +2424,33 @@ void * __weak module_alloc(unsigned long size)
 	return vmalloc_exec(size);
 }
 
-static void *module_alloc_update_bounds(unsigned long size)
+static void *module_alloc_update_bounds_rw(unsigned long size)
 {
 	void *ret = module_alloc(size);
 
 	if (ret) {
 		mutex_lock(&module_mutex);
 		/* Update module bounds. */
-		if ((unsigned long)ret < module_addr_min)
-			module_addr_min = (unsigned long)ret;
-		if ((unsigned long)ret + size > module_addr_max)
-			module_addr_max = (unsigned long)ret + size;
+		if ((unsigned long)ret < module_addr_min_rw)
+			module_addr_min_rw = (unsigned long)ret;
+		if ((unsigned long)ret + size > module_addr_max_rw)
+			module_addr_max_rw = (unsigned long)ret + size;
+		mutex_unlock(&module_mutex);
+	}
+	return ret;
+}
+
+static void *module_alloc_update_bounds_rx(unsigned long size)
+{
+	void *ret = module_alloc_exec(size);
+
+	if (ret) {
+		mutex_lock(&module_mutex);
+		/* Update module bounds. */
+		if ((unsigned long)ret < module_addr_min_rx)
+			module_addr_min_rx = (unsigned long)ret;
+		if ((unsigned long)ret + size > module_addr_max_rx)
+			module_addr_max_rx = (unsigned long)ret + size;
 		mutex_unlock(&module_mutex);
 	}
 	return ret;
@@ -2652,7 +2707,15 @@ static struct module *setup_load_info(struct load_info *info, int flags)
 	mod = (void *)info->sechdrs[info->index.mod].sh_addr;
 
 	if (info->index.sym == 0) {
+#ifdef CONFIG_GRKERNSEC_RANDSTRUCT
+		/*
+		 * avoid potentially printing jibberish on attempted load
+		 * of a module randomized with a different seed
+		 */
+		pr_warn("module has no symbols (stripped?)\n");
+#else
 		pr_warn("%s: module has no symbols (stripped?)\n", mod->name);
+#endif
 		return ERR_PTR(-ENOEXEC);
 	}
 
@@ -2668,8 +2731,14 @@ static struct module *setup_load_info(struct load_info *info, int flags)
 static int check_modinfo(struct module *mod, struct load_info *info, int flags)
 {
 	const char *modmagic = get_modinfo(info, "vermagic");
+	const char *license = get_modinfo(info, "license");
 	int err;
 
+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
+	if (!license || !license_is_gpl_compatible(license))
+		return -ENOEXEC;
+#endif
+
 	if (flags & MODULE_INIT_IGNORE_VERMAGIC)
 		modmagic = NULL;
 
@@ -2694,7 +2763,7 @@ static int check_modinfo(struct module *mod, struct load_info *info, int flags)
 	}
 
 	/* Set up license info based on the info section */
-	set_license(mod, get_modinfo(info, "license"));
+	set_license(mod, license);
 
 	return 0;
 }
@@ -2788,7 +2857,7 @@ static int move_module(struct module *mod, struct load_info *info)
 	void *ptr;
 
 	/* Do the allocs. */
-	ptr = module_alloc_update_bounds(mod->core_size);
+	ptr = module_alloc_update_bounds_rw(mod->core_size_rw);
 	/*
 	 * The pointer to this block is stored in the module structure
 	 * which is inside the block. Just mark it as not being a
@@ -2798,11 +2867,11 @@ static int move_module(struct module *mod, struct load_info *info)
 	if (!ptr)
 		return -ENOMEM;
 
-	memset(ptr, 0, mod->core_size);
-	mod->module_core = ptr;
+	memset(ptr, 0, mod->core_size_rw);
+	mod->module_core_rw = ptr;
 
-	if (mod->init_size) {
-		ptr = module_alloc_update_bounds(mod->init_size);
+	if (mod->init_size_rw) {
+		ptr = module_alloc_update_bounds_rw(mod->init_size_rw);
 		/*
 		 * The pointer to this block is stored in the module structure
 		 * which is inside the block. This block doesn't need to be
@@ -2811,13 +2880,45 @@ static int move_module(struct module *mod, struct load_info *info)
 		 */
 		kmemleak_ignore(ptr);
 		if (!ptr) {
-			module_free(mod, mod->module_core);
+			module_free(mod, mod->module_core_rw);
 			return -ENOMEM;
 		}
-		memset(ptr, 0, mod->init_size);
-		mod->module_init = ptr;
+		memset(ptr, 0, mod->init_size_rw);
+		mod->module_init_rw = ptr;
 	} else
-		mod->module_init = NULL;
+		mod->module_init_rw = NULL;
+
+	ptr = module_alloc_update_bounds_rx(mod->core_size_rx);
+	kmemleak_not_leak(ptr);
+	if (!ptr) {
+		if (mod->module_init_rw)
+			module_free(mod, mod->module_init_rw);
+		module_free(mod, mod->module_core_rw);
+		return -ENOMEM;
+	}
+
+	pax_open_kernel();
+	memset(ptr, 0, mod->core_size_rx);
+	pax_close_kernel();
+	mod->module_core_rx = ptr;
+
+	if (mod->init_size_rx) {
+		ptr = module_alloc_update_bounds_rx(mod->init_size_rx);
+		kmemleak_ignore(ptr);
+		if (!ptr && mod->init_size_rx) {
+			module_free_exec(mod, mod->module_core_rx);
+			if (mod->module_init_rw)
+				module_free(mod, mod->module_init_rw);
+			module_free(mod, mod->module_core_rw);
+			return -ENOMEM;
+		}
+
+		pax_open_kernel();
+		memset(ptr, 0, mod->init_size_rx);
+		pax_close_kernel();
+		mod->module_init_rx = ptr;
+	} else
+		mod->module_init_rx = NULL;
 
 	/* Transfer each section which specifies SHF_ALLOC */
 	pr_debug("final section addresses:\n");
@@ -2828,16 +2929,45 @@ static int move_module(struct module *mod, struct load_info *info)
 		if (!(shdr->sh_flags & SHF_ALLOC))
 			continue;
 
-		if (shdr->sh_entsize & INIT_OFFSET_MASK)
-			dest = mod->module_init
-				+ (shdr->sh_entsize & ~INIT_OFFSET_MASK);
-		else
-			dest = mod->module_core + shdr->sh_entsize;
+		if (shdr->sh_entsize & INIT_OFFSET_MASK) {
+			if ((shdr->sh_flags & SHF_WRITE) || !(shdr->sh_flags & SHF_ALLOC))
+				dest = mod->module_init_rw
+					+ (shdr->sh_entsize & ~INIT_OFFSET_MASK);
+			else
+				dest = mod->module_init_rx
+					+ (shdr->sh_entsize & ~INIT_OFFSET_MASK);
+		} else {
+			if ((shdr->sh_flags & SHF_WRITE) || !(shdr->sh_flags & SHF_ALLOC))
+				dest = mod->module_core_rw + shdr->sh_entsize;
+			else
+				dest = mod->module_core_rx + shdr->sh_entsize;
+		}
+
+		if (shdr->sh_type != SHT_NOBITS) {
+
+#ifdef CONFIG_PAX_KERNEXEC
+#ifdef CONFIG_X86_64
+			if ((shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_EXECINSTR))
+				set_memory_x((unsigned long)dest, (shdr->sh_size + PAGE_SIZE) >> PAGE_SHIFT);
+#endif
+			if (!(shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_ALLOC)) {
+				pax_open_kernel();
+				memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size);
+				pax_close_kernel();
+			} else
+#endif
 
-		if (shdr->sh_type != SHT_NOBITS)
 			memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size);
+		}
 		/* Update sh_addr to point to copy in image. */
-		shdr->sh_addr = (unsigned long)dest;
+
+#ifdef CONFIG_PAX_KERNEXEC
+		if (shdr->sh_flags & SHF_EXECINSTR)
+			shdr->sh_addr = ktva_ktla((unsigned long)dest);
+		else
+#endif
+
+			shdr->sh_addr = (unsigned long)dest;
 		pr_debug("\t0x%lx %s\n",
 			 (long)shdr->sh_addr, info->secstrings + shdr->sh_name);
 	}
@@ -2894,12 +3024,12 @@ static void flush_module_icache(const struct module *mod)
 	 * Do it before processing of module parameters, so the module
 	 * can provide parameter accessor functions of its own.
 	 */
-	if (mod->module_init)
-		flush_icache_range((unsigned long)mod->module_init,
-				   (unsigned long)mod->module_init
-				   + mod->init_size);
-	flush_icache_range((unsigned long)mod->module_core,
-			   (unsigned long)mod->module_core + mod->core_size);
+	if (mod->module_init_rx)
+		flush_icache_range((unsigned long)mod->module_init_rx,
+				   (unsigned long)mod->module_init_rx
+				   + mod->init_size_rx);
+	flush_icache_range((unsigned long)mod->module_core_rx,
+			   (unsigned long)mod->module_core_rx + mod->core_size_rx);
 
 	set_fs(old_fs);
 }
@@ -2956,8 +3086,10 @@ static struct module *layout_and_allocate(struct load_info *info, int flags)
 static void module_deallocate(struct module *mod, struct load_info *info)
 {
 	percpu_modfree(mod);
-	module_free(mod, mod->module_init);
-	module_free(mod, mod->module_core);
+	module_free_exec(mod, mod->module_init_rx);
+	module_free_exec(mod, mod->module_core_rx);
+	module_free(mod, mod->module_init_rw);
+	module_free(mod, mod->module_core_rw);
 }
 
 int __weak module_finalize(const Elf_Ehdr *hdr,
@@ -2970,7 +3102,9 @@ int __weak module_finalize(const Elf_Ehdr *hdr,
 static int post_relocation(struct module *mod, const struct load_info *info)
 {
 	/* Sort exception table now relocations are done. */
+	pax_open_kernel();
 	sort_extable(mod->extable, mod->extable + mod->num_exentries);
+	pax_close_kernel();
 
 	/* Copy relocated percpu area over. */
 	percpu_modcopy(mod, (void *)info->sechdrs[info->index.pcpu].sh_addr,
@@ -3079,11 +3213,12 @@ static int do_init_module(struct module *mod)
 	mod->strtab = mod->core_strtab;
 #endif
 	unset_module_init_ro_nx(mod);
-	module_free(mod, mod->module_init);
-	mod->module_init = NULL;
-	mod->init_size = 0;
-	mod->init_ro_size = 0;
-	mod->init_text_size = 0;
+	module_free(mod, mod->module_init_rw);
+	module_free_exec(mod, mod->module_init_rx);
+	mod->module_init_rw = NULL;
+	mod->module_init_rx = NULL;
+	mod->init_size_rw = 0;
+	mod->init_size_rx = 0;
 	mutex_unlock(&module_mutex);
 	wake_up_all(&module_wq);
 
@@ -3151,16 +3286,16 @@ static int complete_formation(struct module *mod, struct load_info *info)
 	module_bug_finalize(info->hdr, info->sechdrs, mod);
 
 	/* Set RO and NX regions for core */
-	set_section_ro_nx(mod->module_core,
-				mod->core_text_size,
-				mod->core_ro_size,
-				mod->core_size);
+	set_section_ro_nx(mod->module_core_rx,
+				mod->core_size_rx,
+				mod->core_size_rx,
+				mod->core_size_rx);
 
 	/* Set RO and NX regions for init */
-	set_section_ro_nx(mod->module_init,
-				mod->init_text_size,
-				mod->init_ro_size,
-				mod->init_size);
+	set_section_ro_nx(mod->module_init_rx,
+				mod->init_size_rx,
+				mod->init_size_rx,
+				mod->init_size_rx);
 
 	/* Mark state as coming so strong_try_module_get() ignores us,
 	 * but kallsyms etc. can see us. */
@@ -3244,9 +3379,38 @@ static int load_module(struct load_info *info, const char __user *uargs,
 	if (err)
 		goto free_unload;
 
+	/* Now copy in args */
+	mod->args = strndup_user(uargs, ~0UL >> 1);
+	if (IS_ERR(mod->args)) {
+		err = PTR_ERR(mod->args);
+		goto free_unload;
+	}
+
 	/* Set up MODINFO_ATTR fields */
 	setup_modinfo(mod, info);
 
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+	{
+		char *p, *p2;
+
+		if (strstr(mod->args, "grsec_modharden_netdev")) {
+			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);
+			err = -EPERM;
+			goto free_modinfo;
+		} else if ((p = strstr(mod->args, "grsec_modharden_normal"))) {
+			p += sizeof("grsec_modharden_normal") - 1;
+			p2 = strstr(p, "_");
+			if (p2) {
+				*p2 = '\0';
+				printk(KERN_ALERT "grsec: denied kernel module auto-load of %.64s by uid %.9s\n", mod->name, p);
+				*p2 = '_';
+			}
+			err = -EPERM;
+			goto free_modinfo;
+		}
+	}
+#endif
+
 	/* Fix up syms, so that st_value is a pointer to location. */
 	err = simplify_symbols(mod, info);
 	if (err < 0)
@@ -3262,13 +3426,6 @@ static int load_module(struct load_info *info, const char __user *uargs,
 
 	flush_module_icache(mod);
 
-	/* Now copy in args */
-	mod->args = strndup_user(uargs, ~0UL >> 1);
-	if (IS_ERR(mod->args)) {
-		err = PTR_ERR(mod->args);
-		goto free_arch_cleanup;
-	}
-
 	dynamic_debug_setup(info->debug, info->num_debug);
 
 	/* Ftrace init must be called in the MODULE_STATE_UNFORMED state */
@@ -3311,11 +3468,10 @@ static int load_module(struct load_info *info, const char __user *uargs,
  ddebug_cleanup:
 	dynamic_debug_remove(info->debug);
 	synchronize_sched();
-	kfree(mod->args);
- free_arch_cleanup:
 	module_arch_cleanup(mod);
  free_modinfo:
 	free_modinfo(mod);
+	kfree(mod->args);
  free_unload:
 	module_unload_free(mod);
  unlink_mod:
@@ -3398,10 +3554,16 @@ static const char *get_ksymbol(struct module *mod,
 	unsigned long nextval;
 
 	/* At worse, next value is at end of module */
-	if (within_module_init(addr, mod))
-		nextval = (unsigned long)mod->module_init+mod->init_text_size;
+	if (within_module_init_rx(addr, mod))
+		nextval = (unsigned long)mod->module_init_rx+mod->init_size_rx;
+	else if (within_module_init_rw(addr, mod))
+		nextval = (unsigned long)mod->module_init_rw+mod->init_size_rw;
+	else if (within_module_core_rx(addr, mod))
+		nextval = (unsigned long)mod->module_core_rx+mod->core_size_rx;
+	else if (within_module_core_rw(addr, mod))
+		nextval = (unsigned long)mod->module_core_rw+mod->core_size_rw;
 	else
-		nextval = (unsigned long)mod->module_core+mod->core_text_size;
+		return NULL;
 
 	/* Scan for closest preceding symbol, and next symbol. (ELF
 	   starts real symbols at 1). */
@@ -3652,7 +3814,7 @@ static int m_show(struct seq_file *m, void *p)
 		return 0;
 
 	seq_printf(m, "%s %u",
-		   mod->name, mod->init_size + mod->core_size);
+		   mod->name, mod->init_size_rx + mod->init_size_rw + mod->core_size_rx + mod->core_size_rw);
 	print_unload_info(m, mod);
 
 	/* Informative for users. */
@@ -3661,7 +3823,7 @@ static int m_show(struct seq_file *m, void *p)
 		   mod->state == MODULE_STATE_COMING ? "Loading":
 		   "Live");
 	/* Used by oprofile and other similar tools. */
-	seq_printf(m, " 0x%pK", mod->module_core);
+	seq_printf(m, " 0x%pK 0x%pK", mod->module_core_rx, mod->module_core_rw);
 
 	/* Taints info */
 	if (mod->taints)
@@ -3697,7 +3859,17 @@ static const struct file_operations proc_modules_operations = {
 
 static int __init proc_modules_init(void)
 {
+#ifndef CONFIG_GRKERNSEC_HIDESYM
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	proc_create("modules", S_IRUSR, NULL, &proc_modules_operations);
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	proc_create("modules", S_IRUSR | S_IRGRP, NULL, &proc_modules_operations);
+#else
 	proc_create("modules", 0, NULL, &proc_modules_operations);
+#endif
+#else
+	proc_create("modules", S_IRUSR, NULL, &proc_modules_operations);
+#endif
 	return 0;
 }
 module_init(proc_modules_init);
@@ -3758,14 +3930,14 @@ struct module *__module_address(unsigned long addr)
 {
 	struct module *mod;
 
-	if (addr < module_addr_min || addr > module_addr_max)
+	if ((addr < module_addr_min_rx || addr > module_addr_max_rx) &&
+	    (addr < module_addr_min_rw || addr > module_addr_max_rw))
 		return NULL;
 
 	list_for_each_entry_rcu(mod, &modules, list) {
 		if (mod->state == MODULE_STATE_UNFORMED)
 			continue;
-		if (within_module_core(addr, mod)
-		    || within_module_init(addr, mod))
+		if (within_module_init(addr, mod) || within_module_core(addr, mod))
 			return mod;
 	}
 	return NULL;
@@ -3800,11 +3972,20 @@ bool is_module_text_address(unsigned long addr)
  */
 struct module *__module_text_address(unsigned long addr)
 {
-	struct module *mod = __module_address(addr);
+	struct module *mod;
+
+#ifdef CONFIG_X86_32
+	addr = ktla_ktva(addr);
+#endif
+
+	if (addr < module_addr_min_rx || addr > module_addr_max_rx)
+		return NULL;
+
+	mod = __module_address(addr);
+
 	if (mod) {
 		/* Make sure it's within the text section. */
-		if (!within(addr, mod->module_init, mod->init_text_size)
-		    && !within(addr, mod->module_core, mod->core_text_size))
+		if (!within_module_init_rx(addr, mod) && !within_module_core_rx(addr, mod))
 			mod = NULL;
 	}
 	return mod;
diff --git a/kernel/notifier.c b/kernel/notifier.c
index 4803da6..1c5eea6 100644
--- a/kernel/notifier.c
+++ b/kernel/notifier.c
@@ -5,6 +5,7 @@
 #include <linux/rcupdate.h>
 #include <linux/vmalloc.h>
 #include <linux/reboot.h>
+#include <linux/mm.h>
 
 /*
  *	Notifier list for kernel code which wants to be called
@@ -24,10 +25,12 @@ static int notifier_chain_register(struct notifier_block **nl,
 	while ((*nl) != NULL) {
 		if (n->priority > (*nl)->priority)
 			break;
-		nl = &((*nl)->next);
+		nl = (struct notifier_block **)&((*nl)->next);
 	}
-	n->next = *nl;
+	pax_open_kernel();
+	*(const void **)&n->next = *nl;
 	rcu_assign_pointer(*nl, n);
+	pax_close_kernel();
 	return 0;
 }
 
@@ -39,10 +42,12 @@ static int notifier_chain_cond_register(struct notifier_block **nl,
 			return 0;
 		if (n->priority > (*nl)->priority)
 			break;
-		nl = &((*nl)->next);
+		nl = (struct notifier_block **)&((*nl)->next);
 	}
-	n->next = *nl;
+	pax_open_kernel();
+	*(const void **)&n->next = *nl;
 	rcu_assign_pointer(*nl, n);
+	pax_close_kernel();
 	return 0;
 }
 
@@ -51,10 +56,12 @@ static int notifier_chain_unregister(struct notifier_block **nl,
 {
 	while ((*nl) != NULL) {
 		if ((*nl) == n) {
+			pax_open_kernel();
 			rcu_assign_pointer(*nl, n->next);
+			pax_close_kernel();
 			return 0;
 		}
-		nl = &((*nl)->next);
+		nl = (struct notifier_block **)&((*nl)->next);
 	}
 	return -ENOENT;
 }
diff --git a/kernel/padata.c b/kernel/padata.c
index 161402f..598814c 100644
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -54,7 +54,7 @@ static int padata_cpu_hash(struct parallel_data *pd)
 	 * seq_nr mod. number of cpus in use.
 	 */
 
-	seq_nr = atomic_inc_return(&pd->seq_nr);
+	seq_nr = atomic_inc_return_unchecked(&pd->seq_nr);
 	cpu_index = seq_nr % cpumask_weight(pd->cpumask.pcpu);
 
 	return padata_index_to_cpu(pd, cpu_index);
@@ -428,7 +428,7 @@ static struct parallel_data *padata_alloc_pd(struct padata_instance *pinst,
 	padata_init_pqueues(pd);
 	padata_init_squeues(pd);
 	setup_timer(&pd->timer, padata_reorder_timer, (unsigned long)pd);
-	atomic_set(&pd->seq_nr, -1);
+	atomic_set_unchecked(&pd->seq_nr, -1);
 	atomic_set(&pd->reorder_objects, 0);
 	atomic_set(&pd->refcnt, 0);
 	pd->pinst = pinst;
diff --git a/kernel/panic.c b/kernel/panic.c
index 62e16ce..9db5047b 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -53,7 +53,7 @@ EXPORT_SYMBOL(panic_blink);
 /*
  * Stop ourself in panic -- architecture code may override this
  */
-void __weak panic_smp_self_stop(void)
+void __weak __noreturn panic_smp_self_stop(void)
 {
 	while (1)
 		cpu_relax();
@@ -420,7 +420,7 @@ static void warn_slowpath_common(const char *file, int line, void *caller,
 	disable_trace_on_warning();
 
 	pr_warn("------------[ cut here ]------------\n");
-	pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pS()\n",
+	pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pA()\n",
 		raw_smp_processor_id(), current->pid, file, line, caller);
 
 	if (args)
@@ -474,7 +474,8 @@ EXPORT_SYMBOL(warn_slowpath_null);
  */
 __visible void __stack_chk_fail(void)
 {
-	panic("stack-protector: Kernel stack is corrupted in: %p\n",
+	dump_stack();
+	panic("stack-protector: Kernel stack is corrupted in: %pA\n",
 		__builtin_return_address(0));
 }
 EXPORT_SYMBOL(__stack_chk_fail);
diff --git a/kernel/pid.c b/kernel/pid.c
index 9b9a266..c20ef80 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -33,6 +33,7 @@
 #include <linux/rculist.h>
 #include <linux/bootmem.h>
 #include <linux/hash.h>
+#include <linux/security.h>
 #include <linux/pid_namespace.h>
 #include <linux/init_task.h>
 #include <linux/syscalls.h>
@@ -47,7 +48,7 @@ struct pid init_struct_pid = INIT_STRUCT_PID;
 
 int pid_max = PID_MAX_DEFAULT;
 
-#define RESERVED_PIDS		300
+#define RESERVED_PIDS		500
 
 int pid_max_min = RESERVED_PIDS + 1;
 int pid_max_max = PID_MAX_LIMIT;
@@ -445,10 +446,18 @@ EXPORT_SYMBOL(pid_task);
  */
 struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns)
 {
+	struct task_struct *task;
+
 	rcu_lockdep_assert(rcu_read_lock_held(),
 			   "find_task_by_pid_ns() needs rcu_read_lock()"
 			   " protection");
-	return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
+
+	task = pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
+
+	if (gr_pid_is_chrooted(task))
+		return NULL;
+
+	return task;
 }
 
 struct task_struct *find_task_by_vpid(pid_t vnr)
@@ -456,6 +465,14 @@ struct task_struct *find_task_by_vpid(pid_t vnr)
 	return find_task_by_pid_ns(vnr, task_active_pid_ns(current));
 }
 
+struct task_struct *find_task_by_vpid_unrestricted(pid_t vnr)
+{
+	rcu_lockdep_assert(rcu_read_lock_held(),
+			   "find_task_by_pid_ns() needs rcu_read_lock()"
+			   " protection");
+	return pid_task(find_pid_ns(vnr, task_active_pid_ns(current)), PIDTYPE_PID);
+}
+
 struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
 {
 	struct pid *pid;
diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
index db95d8e..a0ca23f 100644
--- a/kernel/pid_namespace.c
+++ b/kernel/pid_namespace.c
@@ -253,7 +253,7 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write,
 		void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	struct pid_namespace *pid_ns = task_active_pid_ns(current);
-	struct ctl_table tmp = *table;
+	ctl_table_no_const tmp = *table;
 
 	if (write && !ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN))
 		return -EPERM;
diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 3b89464..5e38379 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -1464,14 +1464,14 @@ struct k_clock clock_posix_cpu = {
 
 static __init int init_posix_cpu_timers(void)
 {
-	struct k_clock process = {
+	static struct k_clock process = {
 		.clock_getres	= process_cpu_clock_getres,
 		.clock_get	= process_cpu_clock_get,
 		.timer_create	= process_cpu_timer_create,
 		.nsleep		= process_cpu_nsleep,
 		.nsleep_restart	= process_cpu_nsleep_restart,
 	};
-	struct k_clock thread = {
+	static struct k_clock thread = {
 		.clock_getres	= thread_cpu_clock_getres,
 		.clock_get	= thread_cpu_clock_get,
 		.timer_create	= thread_cpu_timer_create,
diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
index 424c2d4..679242f 100644
--- a/kernel/posix-timers.c
+++ b/kernel/posix-timers.c
@@ -43,6 +43,7 @@
 #include <linux/hash.h>
 #include <linux/posix-clock.h>
 #include <linux/posix-timers.h>
+#include <linux/grsecurity.h>
 #include <linux/syscalls.h>
 #include <linux/wait.h>
 #include <linux/workqueue.h>
@@ -122,7 +123,7 @@ static DEFINE_SPINLOCK(hash_lock);
  *	    which we beg off on and pass to do_sys_settimeofday().
  */
 
-static struct k_clock posix_clocks[MAX_CLOCKS];
+static struct k_clock *posix_clocks[MAX_CLOCKS];
 
 /*
  * These ones are defined below.
@@ -275,7 +276,7 @@ static int posix_get_tai(clockid_t which_clock, struct timespec *tp)
  */
 static __init int init_posix_timers(void)
 {
-	struct k_clock clock_realtime = {
+	static struct k_clock clock_realtime = {
 		.clock_getres	= hrtimer_get_res,
 		.clock_get	= posix_clock_realtime_get,
 		.clock_set	= posix_clock_realtime_set,
@@ -287,7 +288,7 @@ static __init int init_posix_timers(void)
 		.timer_get	= common_timer_get,
 		.timer_del	= common_timer_del,
 	};
-	struct k_clock clock_monotonic = {
+	static struct k_clock clock_monotonic = {
 		.clock_getres	= hrtimer_get_res,
 		.clock_get	= posix_ktime_get_ts,
 		.nsleep		= common_nsleep,
@@ -297,19 +298,19 @@ static __init int init_posix_timers(void)
 		.timer_get	= common_timer_get,
 		.timer_del	= common_timer_del,
 	};
-	struct k_clock clock_monotonic_raw = {
+	static struct k_clock clock_monotonic_raw = {
 		.clock_getres	= hrtimer_get_res,
 		.clock_get	= posix_get_monotonic_raw,
 	};
-	struct k_clock clock_realtime_coarse = {
+	static struct k_clock clock_realtime_coarse = {
 		.clock_getres	= posix_get_coarse_res,
 		.clock_get	= posix_get_realtime_coarse,
 	};
-	struct k_clock clock_monotonic_coarse = {
+	static struct k_clock clock_monotonic_coarse = {
 		.clock_getres	= posix_get_coarse_res,
 		.clock_get	= posix_get_monotonic_coarse,
 	};
-	struct k_clock clock_tai = {
+	static struct k_clock clock_tai = {
 		.clock_getres	= hrtimer_get_res,
 		.clock_get	= posix_get_tai,
 		.nsleep		= common_nsleep,
@@ -319,7 +320,7 @@ static __init int init_posix_timers(void)
 		.timer_get	= common_timer_get,
 		.timer_del	= common_timer_del,
 	};
-	struct k_clock clock_boottime = {
+	static struct k_clock clock_boottime = {
 		.clock_getres	= hrtimer_get_res,
 		.clock_get	= posix_get_boottime,
 		.nsleep		= common_nsleep,
@@ -531,7 +532,7 @@ void posix_timers_register_clock(const clockid_t clock_id,
 		return;
 	}
 
-	posix_clocks[clock_id] = *new_clock;
+	posix_clocks[clock_id] = new_clock;
 }
 EXPORT_SYMBOL_GPL(posix_timers_register_clock);
 
@@ -577,9 +578,9 @@ static struct k_clock *clockid_to_kclock(const clockid_t id)
 		return (id & CLOCKFD_MASK) == CLOCKFD ?
 			&clock_posix_dynamic : &clock_posix_cpu;
 
-	if (id >= MAX_CLOCKS || !posix_clocks[id].clock_getres)
+	if (id >= MAX_CLOCKS || !posix_clocks[id] || !posix_clocks[id]->clock_getres)
 		return NULL;
-	return &posix_clocks[id];
+	return posix_clocks[id];
 }
 
 static int common_timer_create(struct k_itimer *new_timer)
@@ -597,7 +598,7 @@ SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock,
 	struct k_clock *kc = clockid_to_kclock(which_clock);
 	struct k_itimer *new_timer;
 	int error, new_timer_id;
-	sigevent_t event;
+	sigevent_t event = { };
 	int it_id_set = IT_ID_NOT_SET;
 
 	if (!kc)
@@ -1011,6 +1012,13 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
 	if (copy_from_user(&new_tp, tp, sizeof (*tp)))
 		return -EFAULT;
 
+	/* only the CLOCK_REALTIME clock can be set, all other clocks
+	   have their clock_set fptr set to a nosettime dummy function
+	   CLOCK_REALTIME has a NULL clock_set fptr which causes it to
+	   call common_clock_set, which calls do_sys_settimeofday, which
+	   we hook
+	*/
+
 	return kc->clock_set(which_clock, &new_tp);
 }
 
diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
index 9a83d78..128bfc0 100644
--- a/kernel/power/Kconfig
+++ b/kernel/power/Kconfig
@@ -24,6 +24,8 @@ config HIBERNATE_CALLBACKS
 config HIBERNATION
 	bool "Hibernation (aka 'suspend to disk')"
 	depends on SWAP && ARCH_HIBERNATION_POSSIBLE
+	depends on !GRKERNSEC_KMEM
+	depends on !PAX_MEMORY_SANITIZE
 	select HIBERNATE_CALLBACKS
 	select LZO_COMPRESS
 	select LZO_DECOMPRESS
diff --git a/kernel/power/process.c b/kernel/power/process.c
index 4ee194e..925778f 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -35,6 +35,7 @@ static int try_to_freeze_tasks(bool user_only)
 	unsigned int elapsed_msecs;
 	bool wakeup = false;
 	int sleep_usecs = USEC_PER_MSEC;
+	bool timedout = false;
 
 	do_gettimeofday(&start);
 
@@ -45,13 +46,20 @@ static int try_to_freeze_tasks(bool user_only)
 
 	while (true) {
 		todo = 0;
+		if (time_after(jiffies, end_time))
+			timedout = true;
 		read_lock(&tasklist_lock);
 		do_each_thread(g, p) {
 			if (p == current || !freeze_task(p))
 				continue;
 
-			if (!freezer_should_skip(p))
+			if (!freezer_should_skip(p)) {
 				todo++;
+				if (timedout) {
+					printk(KERN_ERR "Task refusing to freeze:\n");
+					sched_show_task(p);
+				}
+			}
 		} while_each_thread(g, p);
 		read_unlock(&tasklist_lock);
 
@@ -60,7 +68,7 @@ static int try_to_freeze_tasks(bool user_only)
 			todo += wq_busy;
 		}
 
-		if (!todo || time_after(jiffies, end_time))
+		if (!todo || timedout)
 			break;
 
 		if (pm_wakeup_pending()) {
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 13e839d..8a71f12 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -480,6 +480,11 @@ static int check_syslog_permissions(int type, bool from_file)
 	if (from_file && type != SYSLOG_ACTION_OPEN)
 		return 0;
 
+#ifdef CONFIG_GRKERNSEC_DMESG
+	if (grsec_enable_dmesg && !capable(CAP_SYSLOG) && !capable_nolog(CAP_SYS_ADMIN))
+		return -EPERM;
+#endif
+
 	if (syslog_action_restricted(type)) {
 		if (capable(CAP_SYSLOG))
 			return 0;
diff --git a/kernel/profile.c b/kernel/profile.c
index 54bf5ba..df6e0a2 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -37,7 +37,7 @@ struct profile_hit {
 #define NR_PROFILE_HIT		(PAGE_SIZE/sizeof(struct profile_hit))
 #define NR_PROFILE_GRP		(NR_PROFILE_HIT/PROFILE_GRPSZ)
 
-static atomic_t *prof_buffer;
+static atomic_unchecked_t *prof_buffer;
 static unsigned long prof_len, prof_shift;
 
 int prof_on __read_mostly;
@@ -256,7 +256,7 @@ static void profile_flip_buffers(void)
 					hits[i].pc = 0;
 				continue;
 			}
-			atomic_add(hits[i].hits, &prof_buffer[hits[i].pc]);
+			atomic_add_unchecked(hits[i].hits, &prof_buffer[hits[i].pc]);
 			hits[i].hits = hits[i].pc = 0;
 		}
 	}
@@ -317,9 +317,9 @@ static void do_profile_hits(int type, void *__pc, unsigned int nr_hits)
 	 * Add the current hit(s) and flush the write-queue out
 	 * to the global buffer:
 	 */
-	atomic_add(nr_hits, &prof_buffer[pc]);
+	atomic_add_unchecked(nr_hits, &prof_buffer[pc]);
 	for (i = 0; i < NR_PROFILE_HIT; ++i) {
-		atomic_add(hits[i].hits, &prof_buffer[hits[i].pc]);
+		atomic_add_unchecked(hits[i].hits, &prof_buffer[hits[i].pc]);
 		hits[i].pc = hits[i].hits = 0;
 	}
 out:
@@ -394,7 +394,7 @@ static void do_profile_hits(int type, void *__pc, unsigned int nr_hits)
 {
 	unsigned long pc;
 	pc = ((unsigned long)__pc - (unsigned long)_stext) >> prof_shift;
-	atomic_add(nr_hits, &prof_buffer[min(pc, prof_len - 1)]);
+	atomic_add_unchecked(nr_hits, &prof_buffer[min(pc, prof_len - 1)]);
 }
 #endif /* !CONFIG_SMP */
 
@@ -490,7 +490,7 @@ read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 			return -EFAULT;
 		buf++; p++; count--; read++;
 	}
-	pnt = (char *)prof_buffer + p - sizeof(atomic_t);
+	pnt = (char *)prof_buffer + p - sizeof(atomic_unchecked_t);
 	if (copy_to_user(buf, (void *)pnt, count))
 		return -EFAULT;
 	read += count;
@@ -521,7 +521,7 @@ static ssize_t write_profile(struct file *file, const char __user *buf,
 	}
 #endif
 	profile_discard_flip_buffers();
-	memset(prof_buffer, 0, prof_len * sizeof(atomic_t));
+	memset(prof_buffer, 0, prof_len * sizeof(atomic_unchecked_t));
 	return count;
 }
 
diff --git a/kernel/ptrace.c b/kernel/ptrace.c
index adf9862..9d86345 100644
--- a/kernel/ptrace.c
+++ b/kernel/ptrace.c
@@ -327,7 +327,7 @@ static int ptrace_attach(struct task_struct *task, long request,
 	if (seize)
 		flags |= PT_SEIZED;
 	rcu_read_lock();
-	if (ns_capable(__task_cred(task)->user_ns, CAP_SYS_PTRACE))
+	if (ns_capable_nolog(__task_cred(task)->user_ns, CAP_SYS_PTRACE))
 		flags |= PT_PTRACE_CAP;
 	rcu_read_unlock();
 	task->ptrace = flags;
@@ -538,7 +538,7 @@ int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst
 				break;
 			return -EIO;
 		}
-		if (copy_to_user(dst, buf, retval))
+		if (retval > sizeof(buf) || copy_to_user(dst, buf, retval))
 			return -EFAULT;
 		copied += retval;
 		src += retval;
@@ -806,7 +806,7 @@ int ptrace_request(struct task_struct *child, long request,
 	bool seized = child->ptrace & PT_SEIZED;
 	int ret = -EIO;
 	siginfo_t siginfo, *si;
-	void __user *datavp = (void __user *) data;
+	void __user *datavp = (__force void __user *) data;
 	unsigned long __user *datalp = datavp;
 	unsigned long flags;
 
@@ -1052,14 +1052,21 @@ SYSCALL_DEFINE4(ptrace, long, request, long, pid, unsigned long, addr,
 		goto out;
 	}
 
+	if (gr_handle_ptrace(child, request)) {
+		ret = -EPERM;
+		goto out_put_task_struct;
+	}
+
 	if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {
 		ret = ptrace_attach(child, request, addr, data);
 		/*
 		 * Some architectures need to do book-keeping after
 		 * a ptrace attach.
 		 */
-		if (!ret)
+		if (!ret) {
 			arch_ptrace_attach(child);
+			gr_audit_ptrace(child);
+		}
 		goto out_put_task_struct;
 	}
 
@@ -1087,7 +1094,7 @@ int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr,
 	copied = access_process_vm(tsk, addr, &tmp, sizeof(tmp), 0);
 	if (copied != sizeof(tmp))
 		return -EIO;
-	return put_user(tmp, (unsigned long __user *)data);
+	return put_user(tmp, (__force unsigned long __user *)data);
 }
 
 int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr,
@@ -1181,7 +1188,7 @@ int compat_ptrace_request(struct task_struct *child, compat_long_t request,
 }
 
 COMPAT_SYSCALL_DEFINE4(ptrace, compat_long_t, request, compat_long_t, pid,
-		       compat_long_t, addr, compat_long_t, data)
+		       compat_ulong_t, addr, compat_ulong_t, data)
 {
 	struct task_struct *child;
 	long ret;
@@ -1197,14 +1204,21 @@ COMPAT_SYSCALL_DEFINE4(ptrace, compat_long_t, request, compat_long_t, pid,
 		goto out;
 	}
 
+	if (gr_handle_ptrace(child, request)) {
+		ret = -EPERM;
+		goto out_put_task_struct;
+	}
+
 	if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {
 		ret = ptrace_attach(child, request, addr, data);
 		/*
 		 * Some architectures need to do book-keeping after
 		 * a ptrace attach.
 		 */
-		if (!ret)
+		if (!ret) {
 			arch_ptrace_attach(child);
+			gr_audit_ptrace(child);
+		}
 		goto out_put_task_struct;
 	}
 
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index 948a769..5ca842b 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -124,12 +124,12 @@ static DEFINE_PER_CPU(long [RCU_TORTURE_PIPE_LEN + 1],
 		      rcu_torture_count) = { 0 };
 static DEFINE_PER_CPU(long [RCU_TORTURE_PIPE_LEN + 1],
 		      rcu_torture_batch) = { 0 };
-static atomic_t rcu_torture_wcount[RCU_TORTURE_PIPE_LEN + 1];
-static atomic_t n_rcu_torture_alloc;
-static atomic_t n_rcu_torture_alloc_fail;
-static atomic_t n_rcu_torture_free;
-static atomic_t n_rcu_torture_mberror;
-static atomic_t n_rcu_torture_error;
+static atomic_unchecked_t rcu_torture_wcount[RCU_TORTURE_PIPE_LEN + 1];
+static atomic_unchecked_t n_rcu_torture_alloc;
+static atomic_unchecked_t n_rcu_torture_alloc_fail;
+static atomic_unchecked_t n_rcu_torture_free;
+static atomic_unchecked_t n_rcu_torture_mberror;
+static atomic_unchecked_t n_rcu_torture_error;
 static long n_rcu_torture_barrier_error;
 static long n_rcu_torture_boost_ktrerror;
 static long n_rcu_torture_boost_rterror;
@@ -200,11 +200,11 @@ rcu_torture_alloc(void)
 
 	spin_lock_bh(&rcu_torture_lock);
 	if (list_empty(&rcu_torture_freelist)) {
-		atomic_inc(&n_rcu_torture_alloc_fail);
+		atomic_inc_unchecked(&n_rcu_torture_alloc_fail);
 		spin_unlock_bh(&rcu_torture_lock);
 		return NULL;
 	}
-	atomic_inc(&n_rcu_torture_alloc);
+	atomic_inc_unchecked(&n_rcu_torture_alloc);
 	p = rcu_torture_freelist.next;
 	list_del_init(p);
 	spin_unlock_bh(&rcu_torture_lock);
@@ -217,7 +217,7 @@ rcu_torture_alloc(void)
 static void
 rcu_torture_free(struct rcu_torture *p)
 {
-	atomic_inc(&n_rcu_torture_free);
+	atomic_inc_unchecked(&n_rcu_torture_free);
 	spin_lock_bh(&rcu_torture_lock);
 	list_add_tail(&p->rtort_free, &rcu_torture_freelist);
 	spin_unlock_bh(&rcu_torture_lock);
@@ -301,7 +301,7 @@ rcu_torture_pipe_update_one(struct rcu_torture *rp)
 	i = rp->rtort_pipe_count;
 	if (i > RCU_TORTURE_PIPE_LEN)
 		i = RCU_TORTURE_PIPE_LEN;
-	atomic_inc(&rcu_torture_wcount[i]);
+	atomic_inc_unchecked(&rcu_torture_wcount[i]);
 	if (++rp->rtort_pipe_count >= RCU_TORTURE_PIPE_LEN) {
 		rp->rtort_mbtest = 0;
 		return true;
@@ -808,7 +808,7 @@ rcu_torture_writer(void *arg)
 			i = old_rp->rtort_pipe_count;
 			if (i > RCU_TORTURE_PIPE_LEN)
 				i = RCU_TORTURE_PIPE_LEN;
-			atomic_inc(&rcu_torture_wcount[i]);
+			atomic_inc_unchecked(&rcu_torture_wcount[i]);
 			old_rp->rtort_pipe_count++;
 			switch (synctype[torture_random(&rand) % nsynctypes]) {
 			case RTWS_DEF_FREE:
@@ -926,7 +926,7 @@ static void rcu_torture_timer(unsigned long unused)
 		return;
 	}
 	if (p->rtort_mbtest == 0)
-		atomic_inc(&n_rcu_torture_mberror);
+		atomic_inc_unchecked(&n_rcu_torture_mberror);
 	spin_lock(&rand_lock);
 	cur_ops->read_delay(&rand);
 	n_rcu_torture_timers++;
@@ -996,7 +996,7 @@ rcu_torture_reader(void *arg)
 			continue;
 		}
 		if (p->rtort_mbtest == 0)
-			atomic_inc(&n_rcu_torture_mberror);
+			atomic_inc_unchecked(&n_rcu_torture_mberror);
 		cur_ops->read_delay(&rand);
 		preempt_disable();
 		pipe_count = p->rtort_pipe_count;
@@ -1054,15 +1054,15 @@ rcu_torture_printk(char *page)
 	}
 	page += sprintf(page, "%s%s ", torture_type, TORTURE_FLAG);
 	page += sprintf(page,
-		       "rtc: %p ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
+		       "rtc: %pP ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
 		       rcu_torture_current,
 		       rcu_torture_current_version,
 		       list_empty(&rcu_torture_freelist),
-		       atomic_read(&n_rcu_torture_alloc),
-		       atomic_read(&n_rcu_torture_alloc_fail),
-		       atomic_read(&n_rcu_torture_free));
+		       atomic_read_unchecked(&n_rcu_torture_alloc),
+		       atomic_read_unchecked(&n_rcu_torture_alloc_fail),
+		       atomic_read_unchecked(&n_rcu_torture_free));
 	page += sprintf(page, "rtmbe: %d rtbke: %ld rtbre: %ld ",
-		       atomic_read(&n_rcu_torture_mberror),
+		       atomic_read_unchecked(&n_rcu_torture_mberror),
 		       n_rcu_torture_boost_ktrerror,
 		       n_rcu_torture_boost_rterror);
 	page += sprintf(page, "rtbf: %ld rtb: %ld nt: %ld ",
@@ -1075,14 +1075,14 @@ rcu_torture_printk(char *page)
 		       n_barrier_attempts,
 		       n_rcu_torture_barrier_error);
 	page += sprintf(page, "\n%s%s ", torture_type, TORTURE_FLAG);
-	if (atomic_read(&n_rcu_torture_mberror) != 0 ||
+	if (atomic_read_unchecked(&n_rcu_torture_mberror) != 0 ||
 	    n_rcu_torture_barrier_error != 0 ||
 	    n_rcu_torture_boost_ktrerror != 0 ||
 	    n_rcu_torture_boost_rterror != 0 ||
 	    n_rcu_torture_boost_failure != 0 ||
 	    i > 1) {
 		page += sprintf(page, "!!! ");
-		atomic_inc(&n_rcu_torture_error);
+		atomic_inc_unchecked(&n_rcu_torture_error);
 		WARN_ON_ONCE(1);
 	}
 	page += sprintf(page, "Reader Pipe: ");
@@ -1096,7 +1096,7 @@ rcu_torture_printk(char *page)
 	page += sprintf(page, "Free-Block Circulation: ");
 	for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
 		page += sprintf(page, " %d",
-			       atomic_read(&rcu_torture_wcount[i]));
+			       atomic_read_unchecked(&rcu_torture_wcount[i]));
 	}
 	page += sprintf(page, "\n");
 	if (cur_ops->stats)
@@ -1461,7 +1461,7 @@ rcu_torture_cleanup(void)
 
 	rcu_torture_stats_print();  /* -After- the stats thread is stopped! */
 
-	if (atomic_read(&n_rcu_torture_error) || n_rcu_torture_barrier_error)
+	if (atomic_read_unchecked(&n_rcu_torture_error) || n_rcu_torture_barrier_error)
 		rcu_torture_print_module_parms(cur_ops, "End of test: FAILURE");
 	else if (torture_onoff_failures())
 		rcu_torture_print_module_parms(cur_ops,
@@ -1584,18 +1584,18 @@ rcu_torture_init(void)
 
 	rcu_torture_current = NULL;
 	rcu_torture_current_version = 0;
-	atomic_set(&n_rcu_torture_alloc, 0);
-	atomic_set(&n_rcu_torture_alloc_fail, 0);
-	atomic_set(&n_rcu_torture_free, 0);
-	atomic_set(&n_rcu_torture_mberror, 0);
-	atomic_set(&n_rcu_torture_error, 0);
+	atomic_set_unchecked(&n_rcu_torture_alloc, 0);
+	atomic_set_unchecked(&n_rcu_torture_alloc_fail, 0);
+	atomic_set_unchecked(&n_rcu_torture_free, 0);
+	atomic_set_unchecked(&n_rcu_torture_mberror, 0);
+	atomic_set_unchecked(&n_rcu_torture_error, 0);
 	n_rcu_torture_barrier_error = 0;
 	n_rcu_torture_boost_ktrerror = 0;
 	n_rcu_torture_boost_rterror = 0;
 	n_rcu_torture_boost_failure = 0;
 	n_rcu_torture_boosts = 0;
 	for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++)
-		atomic_set(&rcu_torture_wcount[i], 0);
+		atomic_set_unchecked(&rcu_torture_wcount[i], 0);
 	for_each_possible_cpu(cpu) {
 		for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
 			per_cpu(rcu_torture_count, cpu)[i] = 0;
diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
index c639556..cf0a0d5 100644
--- a/kernel/rcu/srcu.c
+++ b/kernel/rcu/srcu.c
@@ -298,9 +298,9 @@ int __srcu_read_lock(struct srcu_struct *sp)
 
 	idx = ACCESS_ONCE(sp->completed) & 0x1;
 	preempt_disable();
-	ACCESS_ONCE(this_cpu_ptr(sp->per_cpu_ref)->c[idx]) += 1;
+	ACCESS_ONCE_RW(this_cpu_ptr(sp->per_cpu_ref)->c[idx]) += 1;
 	smp_mb(); /* B */  /* Avoid leaking the critical section. */
-	ACCESS_ONCE(this_cpu_ptr(sp->per_cpu_ref)->seq[idx]) += 1;
+	ACCESS_ONCE_RW(this_cpu_ptr(sp->per_cpu_ref)->seq[idx]) += 1;
 	preempt_enable();
 	return idx;
 }
diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
index d9efcc1..ea543e9 100644
--- a/kernel/rcu/tiny.c
+++ b/kernel/rcu/tiny.c
@@ -42,7 +42,7 @@
 /* Forward declarations for tiny_plugin.h. */
 struct rcu_ctrlblk;
 static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp);
-static void rcu_process_callbacks(struct softirq_action *unused);
+static void rcu_process_callbacks(void);
 static void __call_rcu(struct rcu_head *head,
 		       void (*func)(struct rcu_head *rcu),
 		       struct rcu_ctrlblk *rcp);
@@ -308,7 +308,7 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp)
 				      false));
 }
 
-static void rcu_process_callbacks(struct softirq_action *unused)
+static __latent_entropy void rcu_process_callbacks(void)
 {
 	__rcu_process_callbacks(&rcu_sched_ctrlblk);
 	__rcu_process_callbacks(&rcu_bh_ctrlblk);
diff --git a/kernel/rcu/tiny_plugin.h b/kernel/rcu/tiny_plugin.h
index 858c565..7efd915 100644
--- a/kernel/rcu/tiny_plugin.h
+++ b/kernel/rcu/tiny_plugin.h
@@ -152,17 +152,17 @@ static void check_cpu_stall(struct rcu_ctrlblk *rcp)
 		dump_stack();
 	}
 	if (*rcp->curtail && ULONG_CMP_GE(j, js))
-		ACCESS_ONCE(rcp->jiffies_stall) = jiffies +
+		ACCESS_ONCE_RW(rcp->jiffies_stall) = jiffies +
 			3 * rcu_jiffies_till_stall_check() + 3;
 	else if (ULONG_CMP_GE(j, js))
-		ACCESS_ONCE(rcp->jiffies_stall) = jiffies + rcu_jiffies_till_stall_check();
+		ACCESS_ONCE_RW(rcp->jiffies_stall) = jiffies + rcu_jiffies_till_stall_check();
 }
 
 static void reset_cpu_stall_ticks(struct rcu_ctrlblk *rcp)
 {
 	rcp->ticks_this_gp = 0;
 	rcp->gp_start = jiffies;
-	ACCESS_ONCE(rcp->jiffies_stall) = jiffies + rcu_jiffies_till_stall_check();
+	ACCESS_ONCE_RW(rcp->jiffies_stall) = jiffies + rcu_jiffies_till_stall_check();
 }
 
 static void check_cpu_stalls(void)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 625d0b0..0bce4d6 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -263,7 +263,7 @@ static void rcu_momentary_dyntick_idle(void)
 		 */
 		rdtp = this_cpu_ptr(&rcu_dynticks);
 		smp_mb__before_atomic(); /* Earlier stuff before QS. */
-		atomic_add(2, &rdtp->dynticks);  /* QS. */
+		atomic_add_unchecked(2, &rdtp->dynticks);  /* QS. */
 		smp_mb__after_atomic(); /* Later stuff after QS. */
 		break;
 	}
@@ -523,9 +523,9 @@ static void rcu_eqs_enter_common(struct rcu_dynticks *rdtp, long long oldval,
 	rcu_prepare_for_idle(smp_processor_id());
 	/* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */
 	smp_mb__before_atomic();  /* See above. */
-	atomic_inc(&rdtp->dynticks);
+	atomic_inc_unchecked(&rdtp->dynticks);
 	smp_mb__after_atomic();  /* Force ordering with next sojourn. */
-	WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1);
+	WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks) & 0x1);
 
 	/*
 	 * It is illegal to enter an extended quiescent state while
@@ -643,10 +643,10 @@ static void rcu_eqs_exit_common(struct rcu_dynticks *rdtp, long long oldval,
 			       int user)
 {
 	smp_mb__before_atomic();  /* Force ordering w/previous sojourn. */
-	atomic_inc(&rdtp->dynticks);
+	atomic_inc_unchecked(&rdtp->dynticks);
 	/* CPUs seeing atomic_inc() must see later RCU read-side crit sects */
 	smp_mb__after_atomic();  /* See above. */
-	WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1));
+	WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks) & 0x1));
 	rcu_cleanup_after_idle(smp_processor_id());
 	trace_rcu_dyntick(TPS("End"), oldval, rdtp->dynticks_nesting);
 	if (!user && !is_idle_task(current)) {
@@ -767,14 +767,14 @@ void rcu_nmi_enter(void)
 	struct rcu_dynticks *rdtp = this_cpu_ptr(&rcu_dynticks);
 
 	if (rdtp->dynticks_nmi_nesting == 0 &&
-	    (atomic_read(&rdtp->dynticks) & 0x1))
+	    (atomic_read_unchecked(&rdtp->dynticks) & 0x1))
 		return;
 	rdtp->dynticks_nmi_nesting++;
 	smp_mb__before_atomic();  /* Force delay from prior write. */
-	atomic_inc(&rdtp->dynticks);
+	atomic_inc_unchecked(&rdtp->dynticks);
 	/* CPUs seeing atomic_inc() must see later RCU read-side crit sects */
 	smp_mb__after_atomic();  /* See above. */
-	WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1));
+	WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks) & 0x1));
 }
 
 /**
@@ -793,9 +793,9 @@ void rcu_nmi_exit(void)
 		return;
 	/* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */
 	smp_mb__before_atomic();  /* See above. */
-	atomic_inc(&rdtp->dynticks);
+	atomic_inc_unchecked(&rdtp->dynticks);
 	smp_mb__after_atomic();  /* Force delay to next write. */
-	WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1);
+	WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks) & 0x1);
 }
 
 /**
@@ -808,7 +808,7 @@ void rcu_nmi_exit(void)
  */
 bool notrace __rcu_is_watching(void)
 {
-	return atomic_read(this_cpu_ptr(&rcu_dynticks.dynticks)) & 0x1;
+	return atomic_read_unchecked(this_cpu_ptr(&rcu_dynticks.dynticks)) & 0x1;
 }
 
 /**
@@ -891,7 +891,7 @@ static int rcu_is_cpu_rrupt_from_idle(void)
 static int dyntick_save_progress_counter(struct rcu_data *rdp,
 					 bool *isidle, unsigned long *maxj)
 {
-	rdp->dynticks_snap = atomic_add_return(0, &rdp->dynticks->dynticks);
+	rdp->dynticks_snap = atomic_add_return_unchecked(0, &rdp->dynticks->dynticks);
 	rcu_sysidle_check_cpu(rdp, isidle, maxj);
 	if ((rdp->dynticks_snap & 0x1) == 0) {
 		trace_rcu_fqs(rdp->rsp->name, rdp->gpnum, rdp->cpu, TPS("dti"));
@@ -920,7 +920,7 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp,
 	int *rcrmp;
 	unsigned int snap;
 
-	curr = (unsigned int)atomic_add_return(0, &rdp->dynticks->dynticks);
+	curr = (unsigned int)atomic_add_return_unchecked(0, &rdp->dynticks->dynticks);
 	snap = (unsigned int)rdp->dynticks_snap;
 
 	/*
@@ -983,10 +983,10 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp,
 			 rdp->rsp->gp_start + jiffies_till_sched_qs) ||
 	    ULONG_CMP_GE(jiffies, rdp->rsp->jiffies_resched)) {
 		if (!(ACCESS_ONCE(*rcrmp) & rdp->rsp->flavor_mask)) {
-			ACCESS_ONCE(rdp->cond_resched_completed) =
+			ACCESS_ONCE_RW(rdp->cond_resched_completed) =
 				ACCESS_ONCE(rdp->mynode->completed);
 			smp_mb(); /* ->cond_resched_completed before *rcrmp. */
-			ACCESS_ONCE(*rcrmp) =
+			ACCESS_ONCE_RW(*rcrmp) =
 				ACCESS_ONCE(*rcrmp) + rdp->rsp->flavor_mask;
 			resched_cpu(rdp->cpu);  /* Force CPU into scheduler. */
 			rdp->rsp->jiffies_resched += 5; /* Enable beating. */
@@ -1008,7 +1008,7 @@ static void record_gp_stall_check_time(struct rcu_state *rsp)
 	rsp->gp_start = j;
 	smp_wmb(); /* Record start time before stall time. */
 	j1 = rcu_jiffies_till_stall_check();
-	ACCESS_ONCE(rsp->jiffies_stall) = j + j1;
+	ACCESS_ONCE_RW(rsp->jiffies_stall) = j + j1;
 	rsp->jiffies_resched = j + j1 / 2;
 }
 
@@ -1052,7 +1052,7 @@ static void print_other_cpu_stall(struct rcu_state *rsp)
 		raw_spin_unlock_irqrestore(&rnp->lock, flags);
 		return;
 	}
-	ACCESS_ONCE(rsp->jiffies_stall) = jiffies + 3 * rcu_jiffies_till_stall_check() + 3;
+	ACCESS_ONCE_RW(rsp->jiffies_stall) = jiffies + 3 * rcu_jiffies_till_stall_check() + 3;
 	raw_spin_unlock_irqrestore(&rnp->lock, flags);
 
 	/*
@@ -1130,7 +1130,7 @@ static void print_cpu_stall(struct rcu_state *rsp)
 
 	raw_spin_lock_irqsave(&rnp->lock, flags);
 	if (ULONG_CMP_GE(jiffies, ACCESS_ONCE(rsp->jiffies_stall)))
-		ACCESS_ONCE(rsp->jiffies_stall) = jiffies +
+		ACCESS_ONCE_RW(rsp->jiffies_stall) = jiffies +
 				     3 * rcu_jiffies_till_stall_check() + 3;
 	raw_spin_unlock_irqrestore(&rnp->lock, flags);
 
@@ -1214,7 +1214,7 @@ void rcu_cpu_stall_reset(void)
 	struct rcu_state *rsp;
 
 	for_each_rcu_flavor(rsp)
-		ACCESS_ONCE(rsp->jiffies_stall) = jiffies + ULONG_MAX / 2;
+		ACCESS_ONCE_RW(rsp->jiffies_stall) = jiffies + ULONG_MAX / 2;
 }
 
 /*
@@ -1594,7 +1594,7 @@ static int rcu_gp_init(struct rcu_state *rsp)
 		raw_spin_unlock_irq(&rnp->lock);
 		return 0;
 	}
-	ACCESS_ONCE(rsp->gp_flags) = 0; /* Clear all flags: New grace period. */
+	ACCESS_ONCE_RW(rsp->gp_flags) = 0; /* Clear all flags: New grace period. */
 
 	if (WARN_ON_ONCE(rcu_gp_in_progress(rsp))) {
 		/*
@@ -1635,9 +1635,9 @@ static int rcu_gp_init(struct rcu_state *rsp)
 		rdp = this_cpu_ptr(rsp->rda);
 		rcu_preempt_check_blocked_tasks(rnp);
 		rnp->qsmask = rnp->qsmaskinit;
-		ACCESS_ONCE(rnp->gpnum) = rsp->gpnum;
+		ACCESS_ONCE_RW(rnp->gpnum) = rsp->gpnum;
 		WARN_ON_ONCE(rnp->completed != rsp->completed);
-		ACCESS_ONCE(rnp->completed) = rsp->completed;
+		ACCESS_ONCE_RW(rnp->completed) = rsp->completed;
 		if (rnp == rdp->mynode)
 			(void)__note_gp_changes(rsp, rnp, rdp);
 		rcu_preempt_boost_start_gp(rnp);
@@ -1687,7 +1687,7 @@ static int rcu_gp_fqs(struct rcu_state *rsp, int fqs_state_in)
 	if (ACCESS_ONCE(rsp->gp_flags) & RCU_GP_FLAG_FQS) {
 		raw_spin_lock_irq(&rnp->lock);
 		smp_mb__after_unlock_lock();
-		ACCESS_ONCE(rsp->gp_flags) &= ~RCU_GP_FLAG_FQS;
+		ACCESS_ONCE_RW(rsp->gp_flags) &= ~RCU_GP_FLAG_FQS;
 		raw_spin_unlock_irq(&rnp->lock);
 	}
 	return fqs_state;
@@ -1732,7 +1732,7 @@ static void rcu_gp_cleanup(struct rcu_state *rsp)
 	rcu_for_each_node_breadth_first(rsp, rnp) {
 		raw_spin_lock_irq(&rnp->lock);
 		smp_mb__after_unlock_lock();
-		ACCESS_ONCE(rnp->completed) = rsp->gpnum;
+		ACCESS_ONCE_RW(rnp->completed) = rsp->gpnum;
 		rdp = this_cpu_ptr(rsp->rda);
 		if (rnp == rdp->mynode)
 			needgp = __note_gp_changes(rsp, rnp, rdp) || needgp;
@@ -1747,14 +1747,14 @@ static void rcu_gp_cleanup(struct rcu_state *rsp)
 	rcu_nocb_gp_set(rnp, nocb);
 
 	/* Declare grace period done. */
-	ACCESS_ONCE(rsp->completed) = rsp->gpnum;
+	ACCESS_ONCE_RW(rsp->completed) = rsp->gpnum;
 	trace_rcu_grace_period(rsp->name, rsp->completed, TPS("end"));
 	rsp->fqs_state = RCU_GP_IDLE;
 	rdp = this_cpu_ptr(rsp->rda);
 	/* Advance CBs to reduce false positives below. */
 	needgp = rcu_advance_cbs(rsp, rnp, rdp) || needgp;
 	if (needgp || cpu_needs_another_gp(rsp, rdp)) {
-		ACCESS_ONCE(rsp->gp_flags) = RCU_GP_FLAG_INIT;
+		ACCESS_ONCE_RW(rsp->gp_flags) = RCU_GP_FLAG_INIT;
 		trace_rcu_grace_period(rsp->name,
 				       ACCESS_ONCE(rsp->gpnum),
 				       TPS("newreq"));
@@ -1879,7 +1879,7 @@ rcu_start_gp_advanced(struct rcu_state *rsp, struct rcu_node *rnp,
 		 */
 		return false;
 	}
-	ACCESS_ONCE(rsp->gp_flags) = RCU_GP_FLAG_INIT;
+	ACCESS_ONCE_RW(rsp->gp_flags) = RCU_GP_FLAG_INIT;
 	trace_rcu_grace_period(rsp->name, ACCESS_ONCE(rsp->gpnum),
 			       TPS("newreq"));
 
@@ -2100,7 +2100,7 @@ rcu_send_cbs_to_orphanage(int cpu, struct rcu_state *rsp,
 		rsp->qlen += rdp->qlen;
 		rdp->n_cbs_orphaned += rdp->qlen;
 		rdp->qlen_lazy = 0;
-		ACCESS_ONCE(rdp->qlen) = 0;
+		ACCESS_ONCE_RW(rdp->qlen) = 0;
 	}
 
 	/*
@@ -2347,7 +2347,7 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp)
 	}
 	smp_mb(); /* List handling before counting for rcu_barrier(). */
 	rdp->qlen_lazy -= count_lazy;
-	ACCESS_ONCE(rdp->qlen) -= count;
+	ACCESS_ONCE_RW(rdp->qlen) -= count;
 	rdp->n_cbs_invoked += count;
 
 	/* Reinstate batch limit if we have worked down the excess. */
@@ -2492,7 +2492,7 @@ static void force_quiescent_state(struct rcu_state *rsp)
 		if (rnp_old != NULL)
 			raw_spin_unlock(&rnp_old->fqslock);
 		if (ret) {
-			ACCESS_ONCE(rsp->n_force_qs_lh)++;
+			ACCESS_ONCE_RW(rsp->n_force_qs_lh)++;
 			return;
 		}
 		rnp_old = rnp;
@@ -2504,11 +2504,11 @@ static void force_quiescent_state(struct rcu_state *rsp)
 	smp_mb__after_unlock_lock();
 	raw_spin_unlock(&rnp_old->fqslock);
 	if (ACCESS_ONCE(rsp->gp_flags) & RCU_GP_FLAG_FQS) {
-		ACCESS_ONCE(rsp->n_force_qs_lh)++;
+		ACCESS_ONCE_RW(rsp->n_force_qs_lh)++;
 		raw_spin_unlock_irqrestore(&rnp_old->lock, flags);
 		return;  /* Someone beat us to it. */
 	}
-	ACCESS_ONCE(rsp->gp_flags) |= RCU_GP_FLAG_FQS;
+	ACCESS_ONCE_RW(rsp->gp_flags) |= RCU_GP_FLAG_FQS;
 	raw_spin_unlock_irqrestore(&rnp_old->lock, flags);
 	wake_up(&rsp->gp_wq);  /* Memory barrier implied by wake_up() path. */
 }
@@ -2553,7 +2553,7 @@ __rcu_process_callbacks(struct rcu_state *rsp)
 /*
  * Do RCU core processing for the current CPU.
  */
-static void rcu_process_callbacks(struct softirq_action *unused)
+static void rcu_process_callbacks(void)
 {
 	struct rcu_state *rsp;
 
@@ -2665,7 +2665,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
 	WARN_ON_ONCE((unsigned long)head & 0x3); /* Misaligned rcu_head! */
 	if (debug_rcu_head_queue(head)) {
 		/* Probable double call_rcu(), so leak the callback. */
-		ACCESS_ONCE(head->func) = rcu_leak_callback;
+		ACCESS_ONCE_RW(head->func) = rcu_leak_callback;
 		WARN_ONCE(1, "__call_rcu(): Leaked duplicate callback\n");
 		return;
 	}
@@ -2693,7 +2693,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
 		local_irq_restore(flags);
 		return;
 	}
-	ACCESS_ONCE(rdp->qlen)++;
+	ACCESS_ONCE_RW(rdp->qlen)++;
 	if (lazy)
 		rdp->qlen_lazy++;
 	else
@@ -2968,11 +2968,11 @@ void synchronize_sched_expedited(void)
 	 * counter wrap on a 32-bit system.  Quite a few more CPUs would of
 	 * course be required on a 64-bit system.
 	 */
-	if (ULONG_CMP_GE((ulong)atomic_long_read(&rsp->expedited_start),
+	if (ULONG_CMP_GE((ulong)atomic_long_read_unchecked(&rsp->expedited_start),
 			 (ulong)atomic_long_read(&rsp->expedited_done) +
 			 ULONG_MAX / 8)) {
 		synchronize_sched();
-		atomic_long_inc(&rsp->expedited_wrap);
+		atomic_long_inc_unchecked(&rsp->expedited_wrap);
 		return;
 	}
 
@@ -2980,7 +2980,7 @@ void synchronize_sched_expedited(void)
 	 * Take a ticket.  Note that atomic_inc_return() implies a
 	 * full memory barrier.
 	 */
-	snap = atomic_long_inc_return(&rsp->expedited_start);
+	snap = atomic_long_inc_return_unchecked(&rsp->expedited_start);
 	firstsnap = snap;
 	get_online_cpus();
 	WARN_ON_ONCE(cpu_is_offline(raw_smp_processor_id()));
@@ -2993,14 +2993,14 @@ void synchronize_sched_expedited(void)
 			     synchronize_sched_expedited_cpu_stop,
 			     NULL) == -EAGAIN) {
 		put_online_cpus();
-		atomic_long_inc(&rsp->expedited_tryfail);
+		atomic_long_inc_unchecked(&rsp->expedited_tryfail);
 
 		/* Check to see if someone else did our work for us. */
 		s = atomic_long_read(&rsp->expedited_done);
 		if (ULONG_CMP_GE((ulong)s, (ulong)firstsnap)) {
 			/* ensure test happens before caller kfree */
 			smp_mb__before_atomic(); /* ^^^ */
-			atomic_long_inc(&rsp->expedited_workdone1);
+			atomic_long_inc_unchecked(&rsp->expedited_workdone1);
 			return;
 		}
 
@@ -3009,7 +3009,7 @@ void synchronize_sched_expedited(void)
 			udelay(trycount * num_online_cpus());
 		} else {
 			wait_rcu_gp(call_rcu_sched);
-			atomic_long_inc(&rsp->expedited_normal);
+			atomic_long_inc_unchecked(&rsp->expedited_normal);
 			return;
 		}
 
@@ -3018,7 +3018,7 @@ void synchronize_sched_expedited(void)
 		if (ULONG_CMP_GE((ulong)s, (ulong)firstsnap)) {
 			/* ensure test happens before caller kfree */
 			smp_mb__before_atomic(); /* ^^^ */
-			atomic_long_inc(&rsp->expedited_workdone2);
+			atomic_long_inc_unchecked(&rsp->expedited_workdone2);
 			return;
 		}
 
@@ -3030,10 +3030,10 @@ void synchronize_sched_expedited(void)
 		 * period works for us.
 		 */
 		get_online_cpus();
-		snap = atomic_long_read(&rsp->expedited_start);
+		snap = atomic_long_read_unchecked(&rsp->expedited_start);
 		smp_mb(); /* ensure read is before try_stop_cpus(). */
 	}
-	atomic_long_inc(&rsp->expedited_stoppedcpus);
+	atomic_long_inc_unchecked(&rsp->expedited_stoppedcpus);
 
 	/*
 	 * Everyone up to our most recent fetch is covered by our grace
@@ -3042,16 +3042,16 @@ void synchronize_sched_expedited(void)
 	 * than we did already did their update.
 	 */
 	do {
-		atomic_long_inc(&rsp->expedited_done_tries);
+		atomic_long_inc_unchecked(&rsp->expedited_done_tries);
 		s = atomic_long_read(&rsp->expedited_done);
 		if (ULONG_CMP_GE((ulong)s, (ulong)snap)) {
 			/* ensure test happens before caller kfree */
 			smp_mb__before_atomic(); /* ^^^ */
-			atomic_long_inc(&rsp->expedited_done_lost);
+			atomic_long_inc_unchecked(&rsp->expedited_done_lost);
 			break;
 		}
 	} while (atomic_long_cmpxchg(&rsp->expedited_done, s, snap) != s);
-	atomic_long_inc(&rsp->expedited_done_exit);
+	atomic_long_inc_unchecked(&rsp->expedited_done_exit);
 
 	put_online_cpus();
 }
@@ -3257,7 +3257,7 @@ static void _rcu_barrier(struct rcu_state *rsp)
 	 * ACCESS_ONCE() to prevent the compiler from speculating
 	 * the increment to precede the early-exit check.
 	 */
-	ACCESS_ONCE(rsp->n_barrier_done)++;
+	ACCESS_ONCE_RW(rsp->n_barrier_done)++;
 	WARN_ON_ONCE((rsp->n_barrier_done & 0x1) != 1);
 	_rcu_barrier_trace(rsp, "Inc1", -1, rsp->n_barrier_done);
 	smp_mb(); /* Order ->n_barrier_done increment with below mechanism. */
@@ -3307,7 +3307,7 @@ static void _rcu_barrier(struct rcu_state *rsp)
 
 	/* Increment ->n_barrier_done to prevent duplicate work. */
 	smp_mb(); /* Keep increment after above mechanism. */
-	ACCESS_ONCE(rsp->n_barrier_done)++;
+	ACCESS_ONCE_RW(rsp->n_barrier_done)++;
 	WARN_ON_ONCE((rsp->n_barrier_done & 0x1) != 0);
 	_rcu_barrier_trace(rsp, "Inc2", -1, rsp->n_barrier_done);
 	smp_mb(); /* Keep increment before caller's subsequent code. */
@@ -3352,10 +3352,10 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
 	rdp->grpmask = 1UL << (cpu - rdp->mynode->grplo);
 	init_callback_list(rdp);
 	rdp->qlen_lazy = 0;
-	ACCESS_ONCE(rdp->qlen) = 0;
+	ACCESS_ONCE_RW(rdp->qlen) = 0;
 	rdp->dynticks = &per_cpu(rcu_dynticks, cpu);
 	WARN_ON_ONCE(rdp->dynticks->dynticks_nesting != DYNTICK_TASK_EXIT_IDLE);
-	WARN_ON_ONCE(atomic_read(&rdp->dynticks->dynticks) != 1);
+	WARN_ON_ONCE(atomic_read_unchecked(&rdp->dynticks->dynticks) != 1);
 	rdp->cpu = cpu;
 	rdp->rsp = rsp;
 	rcu_boot_init_nocb_percpu_data(rdp);
@@ -3388,8 +3388,8 @@ rcu_init_percpu_data(int cpu, struct rcu_state *rsp)
 	init_callback_list(rdp);  /* Re-enable callbacks on this CPU. */
 	rdp->dynticks->dynticks_nesting = DYNTICK_TASK_EXIT_IDLE;
 	rcu_sysidle_init_percpu_data(rdp->dynticks);
-	atomic_set(&rdp->dynticks->dynticks,
-		   (atomic_read(&rdp->dynticks->dynticks) & ~0x1) + 1);
+	atomic_set_unchecked(&rdp->dynticks->dynticks,
+		   (atomic_read_unchecked(&rdp->dynticks->dynticks) & ~0x1) + 1);
 	raw_spin_unlock(&rnp->lock);		/* irqs remain disabled. */
 
 	/* Add CPU to rcu_node bitmasks. */
diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 0f69a79..c85c2dc 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -87,11 +87,11 @@ struct rcu_dynticks {
 	long long dynticks_nesting; /* Track irq/process nesting level. */
 				    /* Process level is worth LLONG_MAX/2. */
 	int dynticks_nmi_nesting;   /* Track NMI nesting level. */
-	atomic_t dynticks;	    /* Even value for idle, else odd. */
+	atomic_unchecked_t dynticks;/* Even value for idle, else odd. */
 #ifdef CONFIG_NO_HZ_FULL_SYSIDLE
 	long long dynticks_idle_nesting;
 				    /* irq/process nesting level from idle. */
-	atomic_t dynticks_idle;	    /* Even value for idle, else odd. */
+	atomic_unchecked_t dynticks_idle;/* Even value for idle, else odd. */
 				    /*  "Idle" excludes userspace execution. */
 	unsigned long dynticks_idle_jiffies;
 				    /* End of last non-NMI non-idle period. */
@@ -435,17 +435,17 @@ struct rcu_state {
 						/*  _rcu_barrier(). */
 	/* End of fields guarded by barrier_mutex. */
 
-	atomic_long_t expedited_start;		/* Starting ticket. */
-	atomic_long_t expedited_done;		/* Done ticket. */
-	atomic_long_t expedited_wrap;		/* # near-wrap incidents. */
-	atomic_long_t expedited_tryfail;	/* # acquisition failures. */
-	atomic_long_t expedited_workdone1;	/* # done by others #1. */
-	atomic_long_t expedited_workdone2;	/* # done by others #2. */
-	atomic_long_t expedited_normal;		/* # fallbacks to normal. */
-	atomic_long_t expedited_stoppedcpus;	/* # successful stop_cpus. */
-	atomic_long_t expedited_done_tries;	/* # tries to update _done. */
-	atomic_long_t expedited_done_lost;	/* # times beaten to _done. */
-	atomic_long_t expedited_done_exit;	/* # times exited _done loop. */
+	atomic_long_unchecked_t expedited_start;	/* Starting ticket. */
+	atomic_long_t expedited_done;			/* Done ticket. */
+	atomic_long_unchecked_t expedited_wrap;		/* # near-wrap incidents. */
+	atomic_long_unchecked_t expedited_tryfail;	/* # acquisition failures. */
+	atomic_long_unchecked_t expedited_workdone1;	/* # done by others #1. */
+	atomic_long_unchecked_t expedited_workdone2;	/* # done by others #2. */
+	atomic_long_unchecked_t expedited_normal;	/* # fallbacks to normal. */
+	atomic_long_unchecked_t expedited_stoppedcpus;	/* # successful stop_cpus. */
+	atomic_long_unchecked_t expedited_done_tries;	/* # tries to update _done. */
+	atomic_long_unchecked_t expedited_done_lost;	/* # times beaten to _done. */
+	atomic_long_unchecked_t expedited_done_exit;	/* # times exited _done loop. */
 
 	unsigned long jiffies_force_qs;		/* Time at which to invoke */
 						/*  force_quiescent_state(). */
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 02ac0fb..4aa4a36 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -735,7 +735,7 @@ static int rcu_preempted_readers_exp(struct rcu_node *rnp)
 static int sync_rcu_preempt_exp_done(struct rcu_node *rnp)
 {
 	return !rcu_preempted_readers_exp(rnp) &&
-	       ACCESS_ONCE(rnp->expmask) == 0;
+	       ACCESS_ONCE_RW(rnp->expmask) == 0;
 }
 
 /*
@@ -897,7 +897,7 @@ void synchronize_rcu_expedited(void)
 
 	/* Clean up and exit. */
 	smp_mb(); /* ensure expedited GP seen before counter increment. */
-	ACCESS_ONCE(sync_rcu_preempt_exp_count)++;
+	ACCESS_ONCE_RW(sync_rcu_preempt_exp_count)++;
 unlock_mb_ret:
 	mutex_unlock(&sync_rcu_preempt_exp_mutex);
 mb_ret:
@@ -1447,7 +1447,7 @@ static void rcu_boost_kthread_setaffinity(struct rcu_node *rnp, int outgoingcpu)
 	free_cpumask_var(cm);
 }
 
-static struct smp_hotplug_thread rcu_cpu_thread_spec = {
+static struct smp_hotplug_thread rcu_cpu_thread_spec __read_only = {
 	.store			= &rcu_cpu_kthread_task,
 	.thread_should_run	= rcu_cpu_kthread_should_run,
 	.thread_fn		= rcu_cpu_kthread,
@@ -1926,7 +1926,7 @@ static void print_cpu_stall_info(struct rcu_state *rsp, int cpu)
 	print_cpu_stall_fast_no_hz(fast_no_hz, cpu);
 	pr_err("\t%d: (%lu %s) idle=%03x/%llx/%d softirq=%u/%u %s\n",
 	       cpu, ticks_value, ticks_title,
-	       atomic_read(&rdtp->dynticks) & 0xfff,
+	       atomic_read_unchecked(&rdtp->dynticks) & 0xfff,
 	       rdtp->dynticks_nesting, rdtp->dynticks_nmi_nesting,
 	       rdp->softirq_snap, kstat_softirqs_cpu(RCU_SOFTIRQ, cpu),
 	       fast_no_hz);
@@ -2079,7 +2079,7 @@ static void __call_rcu_nocb_enqueue(struct rcu_data *rdp,
 
 	/* Enqueue the callback on the nocb list and update counts. */
 	old_rhpp = xchg(&rdp->nocb_tail, rhtp);
-	ACCESS_ONCE(*old_rhpp) = rhp;
+	ACCESS_ONCE_RW(*old_rhpp) = rhp;
 	atomic_long_add(rhcount, &rdp->nocb_q_count);
 	atomic_long_add(rhcount_lazy, &rdp->nocb_q_count_lazy);
 
@@ -2255,12 +2255,12 @@ static int rcu_nocb_kthread(void *arg)
 		 * Extract queued callbacks, update counts, and wait
 		 * for a grace period to elapse.
 		 */
-		ACCESS_ONCE(rdp->nocb_head) = NULL;
+		ACCESS_ONCE_RW(rdp->nocb_head) = NULL;
 		tail = xchg(&rdp->nocb_tail, &rdp->nocb_head);
 		c = atomic_long_xchg(&rdp->nocb_q_count, 0);
 		cl = atomic_long_xchg(&rdp->nocb_q_count_lazy, 0);
-		ACCESS_ONCE(rdp->nocb_p_count) += c;
-		ACCESS_ONCE(rdp->nocb_p_count_lazy) += cl;
+		ACCESS_ONCE_RW(rdp->nocb_p_count) += c;
+		ACCESS_ONCE_RW(rdp->nocb_p_count_lazy) += cl;
 		rcu_nocb_wait_gp(rdp);
 
 		/* Each pass through the following loop invokes a callback. */
@@ -2286,8 +2286,8 @@ static int rcu_nocb_kthread(void *arg)
 			list = next;
 		}
 		trace_rcu_batch_end(rdp->rsp->name, c, !!list, 0, 0, 1);
-		ACCESS_ONCE(rdp->nocb_p_count) -= c;
-		ACCESS_ONCE(rdp->nocb_p_count_lazy) -= cl;
+		ACCESS_ONCE_RW(rdp->nocb_p_count) -= c;
+		ACCESS_ONCE_RW(rdp->nocb_p_count_lazy) -= cl;
 		rdp->n_nocbs_invoked += c;
 	}
 	return 0;
@@ -2304,7 +2304,7 @@ static void do_nocb_deferred_wakeup(struct rcu_data *rdp)
 {
 	if (!rcu_nocb_need_deferred_wakeup(rdp))
 		return;
-	ACCESS_ONCE(rdp->nocb_defer_wakeup) = false;
+	ACCESS_ONCE_RW(rdp->nocb_defer_wakeup) = false;
 	wake_up(&rdp->nocb_wq);
 	trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, TPS("DeferredWakeEmpty"));
 }
@@ -2330,7 +2330,7 @@ static void __init rcu_spawn_nocb_kthreads(struct rcu_state *rsp)
 		t = kthread_run(rcu_nocb_kthread, rdp,
 				"rcuo%c/%d", rsp->abbr, cpu);
 		BUG_ON(IS_ERR(t));
-		ACCESS_ONCE(rdp->nocb_kthread) = t;
+		ACCESS_ONCE_RW(rdp->nocb_kthread) = t;
 	}
 }
 
@@ -2461,11 +2461,11 @@ static void rcu_sysidle_enter(struct rcu_dynticks *rdtp, int irq)
 
 	/* Record start of fully idle period. */
 	j = jiffies;
-	ACCESS_ONCE(rdtp->dynticks_idle_jiffies) = j;
+	ACCESS_ONCE_RW(rdtp->dynticks_idle_jiffies) = j;
 	smp_mb__before_atomic();
-	atomic_inc(&rdtp->dynticks_idle);
+	atomic_inc_unchecked(&rdtp->dynticks_idle);
 	smp_mb__after_atomic();
-	WARN_ON_ONCE(atomic_read(&rdtp->dynticks_idle) & 0x1);
+	WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks_idle) & 0x1);
 }
 
 /*
@@ -2530,9 +2530,9 @@ static void rcu_sysidle_exit(struct rcu_dynticks *rdtp, int irq)
 
 	/* Record end of idle period. */
 	smp_mb__before_atomic();
-	atomic_inc(&rdtp->dynticks_idle);
+	atomic_inc_unchecked(&rdtp->dynticks_idle);
 	smp_mb__after_atomic();
-	WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks_idle) & 0x1));
+	WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks_idle) & 0x1));
 
 	/*
 	 * If we are the timekeeping CPU, we are permitted to be non-idle
@@ -2573,7 +2573,7 @@ static void rcu_sysidle_check_cpu(struct rcu_data *rdp, bool *isidle,
 		WARN_ON_ONCE(smp_processor_id() != tick_do_timer_cpu);
 
 	/* Pick up current idle and NMI-nesting counter and check. */
-	cur = atomic_read(&rdtp->dynticks_idle);
+	cur = atomic_read_unchecked(&rdtp->dynticks_idle);
 	if (cur & 0x1) {
 		*isidle = false; /* We are not idle! */
 		return;
@@ -2622,7 +2622,7 @@ static void rcu_sysidle(unsigned long j)
 	case RCU_SYSIDLE_NOT:
 
 		/* First time all are idle, so note a short idle period. */
-		ACCESS_ONCE(full_sysidle_state) = RCU_SYSIDLE_SHORT;
+		ACCESS_ONCE_RW(full_sysidle_state) = RCU_SYSIDLE_SHORT;
 		break;
 
 	case RCU_SYSIDLE_SHORT:
@@ -2660,7 +2660,7 @@ static void rcu_sysidle_cancel(void)
 {
 	smp_mb();
 	if (full_sysidle_state > RCU_SYSIDLE_SHORT)
-		ACCESS_ONCE(full_sysidle_state) = RCU_SYSIDLE_NOT;
+		ACCESS_ONCE_RW(full_sysidle_state) = RCU_SYSIDLE_NOT;
 }
 
 /*
@@ -2708,7 +2708,7 @@ static void rcu_sysidle_cb(struct rcu_head *rhp)
 	smp_mb();  /* grace period precedes setting inuse. */
 
 	rshp = container_of(rhp, struct rcu_sysidle_head, rh);
-	ACCESS_ONCE(rshp->inuse) = 0;
+	ACCESS_ONCE_RW(rshp->inuse) = 0;
 }
 
 /*
diff --git a/kernel/rcu/tree_trace.c b/kernel/rcu/tree_trace.c
index 5cdc62e..cc52e88 100644
--- a/kernel/rcu/tree_trace.c
+++ b/kernel/rcu/tree_trace.c
@@ -121,7 +121,7 @@ static void print_one_rcu_data(struct seq_file *m, struct rcu_data *rdp)
 		   ulong2long(rdp->completed), ulong2long(rdp->gpnum),
 		   rdp->passed_quiesce, rdp->qs_pending);
 	seq_printf(m, " dt=%d/%llx/%d df=%lu",
-		   atomic_read(&rdp->dynticks->dynticks),
+		   atomic_read_unchecked(&rdp->dynticks->dynticks),
 		   rdp->dynticks->dynticks_nesting,
 		   rdp->dynticks->dynticks_nmi_nesting,
 		   rdp->dynticks_fqs);
@@ -182,17 +182,17 @@ static int show_rcuexp(struct seq_file *m, void *v)
 	struct rcu_state *rsp = (struct rcu_state *)m->private;
 
 	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",
-		   atomic_long_read(&rsp->expedited_start),
+		   atomic_long_read_unchecked(&rsp->expedited_start),
 		   atomic_long_read(&rsp->expedited_done),
-		   atomic_long_read(&rsp->expedited_wrap),
-		   atomic_long_read(&rsp->expedited_tryfail),
-		   atomic_long_read(&rsp->expedited_workdone1),
-		   atomic_long_read(&rsp->expedited_workdone2),
-		   atomic_long_read(&rsp->expedited_normal),
-		   atomic_long_read(&rsp->expedited_stoppedcpus),
-		   atomic_long_read(&rsp->expedited_done_tries),
-		   atomic_long_read(&rsp->expedited_done_lost),
-		   atomic_long_read(&rsp->expedited_done_exit));
+		   atomic_long_read_unchecked(&rsp->expedited_wrap),
+		   atomic_long_read_unchecked(&rsp->expedited_tryfail),
+		   atomic_long_read_unchecked(&rsp->expedited_workdone1),
+		   atomic_long_read_unchecked(&rsp->expedited_workdone2),
+		   atomic_long_read_unchecked(&rsp->expedited_normal),
+		   atomic_long_read_unchecked(&rsp->expedited_stoppedcpus),
+		   atomic_long_read_unchecked(&rsp->expedited_done_tries),
+		   atomic_long_read_unchecked(&rsp->expedited_done_lost),
+		   atomic_long_read_unchecked(&rsp->expedited_done_exit));
 	return 0;
 }
 
diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index bc78835..7691a45 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -311,10 +311,10 @@ int rcu_jiffies_till_stall_check(void)
 	 * for CONFIG_RCU_CPU_STALL_TIMEOUT.
 	 */
 	if (till_stall_check < 3) {
-		ACCESS_ONCE(rcu_cpu_stall_timeout) = 3;
+		ACCESS_ONCE_RW(rcu_cpu_stall_timeout) = 3;
 		till_stall_check = 3;
 	} else if (till_stall_check > 300) {
-		ACCESS_ONCE(rcu_cpu_stall_timeout) = 300;
+		ACCESS_ONCE_RW(rcu_cpu_stall_timeout) = 300;
 		till_stall_check = 300;
 	}
 	return till_stall_check * HZ + RCU_STALL_DELAY_DELTA;
diff --git a/kernel/resource.c b/kernel/resource.c
index 3c2237a..4568d96 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -152,8 +152,18 @@ static const struct file_operations proc_iomem_operations = {
 
 static int __init ioresources_init(void)
 {
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+#ifdef CONFIG_GRKERNSEC_PROC_USER
+	proc_create("ioports", S_IRUSR, NULL, &proc_ioports_operations);
+	proc_create("iomem", S_IRUSR, NULL, &proc_iomem_operations);
+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+	proc_create("ioports", S_IRUSR | S_IRGRP, NULL, &proc_ioports_operations);
+	proc_create("iomem", S_IRUSR | S_IRGRP, NULL, &proc_iomem_operations);
+#endif
+#else
 	proc_create("ioports", 0, NULL, &proc_ioports_operations);
 	proc_create("iomem", 0, NULL, &proc_iomem_operations);
+#endif
 	return 0;
 }
 __initcall(ioresources_init);
diff --git a/kernel/sched/auto_group.c b/kernel/sched/auto_group.c
index e73efba..c9bfbd4 100644
--- a/kernel/sched/auto_group.c
+++ b/kernel/sched/auto_group.c
@@ -11,7 +11,7 @@
 
 unsigned int __read_mostly sysctl_sched_autogroup_enabled = 1;
 static struct autogroup autogroup_default;
-static atomic_t autogroup_seq_nr;
+static atomic_unchecked_t autogroup_seq_nr;
 
 void __init autogroup_init(struct task_struct *init_task)
 {
@@ -79,7 +79,7 @@ static inline struct autogroup *autogroup_create(void)
 
 	kref_init(&ag->kref);
 	init_rwsem(&ag->lock);
-	ag->id = atomic_inc_return(&autogroup_seq_nr);
+	ag->id = atomic_inc_return_unchecked(&autogroup_seq_nr);
 	ag->tg = tg;
 #ifdef CONFIG_RT_GROUP_SCHED
 	/*
diff --git a/kernel/sched/completion.c b/kernel/sched/completion.c
index a63f4dc..349bbb0 100644
--- a/kernel/sched/completion.c
+++ b/kernel/sched/completion.c
@@ -204,7 +204,7 @@ EXPORT_SYMBOL(wait_for_completion_interruptible);
  * Return: -ERESTARTSYS if interrupted, 0 if timed out, positive (at least 1,
  * or number of jiffies left till timeout) if completed.
  */
-long __sched
+long __sched __intentional_overflow(-1)
 wait_for_completion_interruptible_timeout(struct completion *x,
 					  unsigned long timeout)
 {
@@ -221,7 +221,7 @@ EXPORT_SYMBOL(wait_for_completion_interruptible_timeout);
  *
  * Return: -ERESTARTSYS if interrupted, 0 if completed.
  */
-int __sched wait_for_completion_killable(struct completion *x)
+int __sched __intentional_overflow(-1) wait_for_completion_killable(struct completion *x)
 {
 	long t = wait_for_common(x, MAX_SCHEDULE_TIMEOUT, TASK_KILLABLE);
 	if (t == -ERESTARTSYS)
@@ -242,7 +242,7 @@ EXPORT_SYMBOL(wait_for_completion_killable);
  * Return: -ERESTARTSYS if interrupted, 0 if timed out, positive (at least 1,
  * or number of jiffies left till timeout) if completed.
  */
-long __sched
+long __sched __intentional_overflow(-1)
 wait_for_completion_killable_timeout(struct completion *x,
 				     unsigned long timeout)
 {
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 0acf96b..80ba955 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1849,7 +1849,7 @@ void set_numabalancing_state(bool enabled)
 int sysctl_numa_balancing(struct ctl_table *table, int write,
 			 void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table t;
+	ctl_table_no_const t;
 	int err;
 	int state = numabalancing_enabled;
 
@@ -2312,8 +2312,10 @@ context_switch(struct rq *rq, struct task_struct *prev,
 		next->active_mm = oldmm;
 		atomic_inc(&oldmm->mm_count);
 		enter_lazy_tlb(oldmm, next);
-	} else
+	} else {
 		switch_mm(oldmm, mm, next);
+		populate_stack();
+	}
 
 	if (!prev->mm) {
 		prev->active_mm = NULL;
@@ -3081,6 +3083,8 @@ int can_nice(const struct task_struct *p, const int nice)
 	/* convert nice value [19,-20] to rlimit style value [1,40] */
 	int nice_rlim = nice_to_rlimit(nice);
 
+	gr_learn_resource(p, RLIMIT_NICE, nice_rlim, 1);
+
 	return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
 		capable(CAP_SYS_NICE));
 }
@@ -3107,7 +3111,8 @@ SYSCALL_DEFINE1(nice, int, increment)
 	nice = task_nice(current) + increment;
 
 	nice = clamp_val(nice, MIN_NICE, MAX_NICE);
-	if (increment < 0 && !can_nice(current, nice))
+	if (increment < 0 && (!can_nice(current, nice) ||
+			      gr_handle_chroot_nice()))
 		return -EPERM;
 
 	retval = security_task_setnice(current, nice);
@@ -3380,6 +3385,7 @@ recheck:
 			if (policy != p->policy && !rlim_rtprio)
 				return -EPERM;
 
+			gr_learn_resource(p, RLIMIT_RTPRIO, attr->sched_priority, 1);
 			/* can't increase priority */
 			if (attr->sched_priority > p->rt_priority &&
 			    attr->sched_priority > rlim_rtprio)
@@ -4772,6 +4778,7 @@ void idle_task_exit(void)
 
 	if (mm != &init_mm) {
 		switch_mm(mm, &init_mm, current);
+		populate_stack();
 		finish_arch_post_lock_switch();
 	}
 	mmdrop(mm);
@@ -4867,7 +4874,7 @@ static void migrate_tasks(unsigned int dead_cpu)
 
 #if defined(CONFIG_SCHED_DEBUG) && defined(CONFIG_SYSCTL)
 
-static struct ctl_table sd_ctl_dir[] = {
+static ctl_table_no_const sd_ctl_dir[] __read_only = {
 	{
 		.procname	= "sched_domain",
 		.mode		= 0555,
@@ -4884,17 +4891,17 @@ static struct ctl_table sd_ctl_root[] = {
 	{}
 };
 
-static struct ctl_table *sd_alloc_ctl_entry(int n)
+static ctl_table_no_const *sd_alloc_ctl_entry(int n)
 {
-	struct ctl_table *entry =
+	ctl_table_no_const *entry =
 		kcalloc(n, sizeof(struct ctl_table), GFP_KERNEL);
 
 	return entry;
 }
 
-static void sd_free_ctl_entry(struct ctl_table **tablep)
+static void sd_free_ctl_entry(ctl_table_no_const *tablep)
 {
-	struct ctl_table *entry;
+	ctl_table_no_const *entry;
 
 	/*
 	 * In the intermediate directories, both the child directory and
@@ -4902,22 +4909,25 @@ static void sd_free_ctl_entry(struct ctl_table **tablep)
 	 * will always be set. In the lowest directory the names are
 	 * static strings and all have proc handlers.
 	 */
-	for (entry = *tablep; entry->mode; entry++) {
-		if (entry->child)
-			sd_free_ctl_entry(&entry->child);
+	for (entry = tablep; entry->mode; entry++) {
+		if (entry->child) {
+			sd_free_ctl_entry(entry->child);
+			pax_open_kernel();
+			entry->child = NULL;
+			pax_close_kernel();
+		}
 		if (entry->proc_handler == NULL)
 			kfree(entry->procname);
 	}
 
-	kfree(*tablep);
-	*tablep = NULL;
+	kfree(tablep);
 }
 
 static int min_load_idx = 0;
 static int max_load_idx = CPU_LOAD_IDX_MAX-1;
 
 static void
-set_table_entry(struct ctl_table *entry,
+set_table_entry(ctl_table_no_const *entry,
 		const char *procname, void *data, int maxlen,
 		umode_t mode, proc_handler *proc_handler,
 		bool load_idx)
@@ -4937,7 +4947,7 @@ set_table_entry(struct ctl_table *entry,
 static struct ctl_table *
 sd_alloc_ctl_domain_table(struct sched_domain *sd)
 {
-	struct ctl_table *table = sd_alloc_ctl_entry(14);
+	ctl_table_no_const *table = sd_alloc_ctl_entry(14);
 
 	if (table == NULL)
 		return NULL;
@@ -4975,9 +4985,9 @@ sd_alloc_ctl_domain_table(struct sched_domain *sd)
 	return table;
 }
 
-static struct ctl_table *sd_alloc_ctl_cpu_table(int cpu)
+static ctl_table_no_const *sd_alloc_ctl_cpu_table(int cpu)
 {
-	struct ctl_table *entry, *table;
+	ctl_table_no_const *entry, *table;
 	struct sched_domain *sd;
 	int domain_num = 0, i;
 	char buf[32];
@@ -5004,11 +5014,13 @@ static struct ctl_table_header *sd_sysctl_header;
 static void register_sched_domain_sysctl(void)
 {
 	int i, cpu_num = num_possible_cpus();
-	struct ctl_table *entry = sd_alloc_ctl_entry(cpu_num + 1);
+	ctl_table_no_const *entry = sd_alloc_ctl_entry(cpu_num + 1);
 	char buf[32];
 
 	WARN_ON(sd_ctl_dir[0].child);
+	pax_open_kernel();
 	sd_ctl_dir[0].child = entry;
+	pax_close_kernel();
 
 	if (entry == NULL)
 		return;
@@ -5031,8 +5043,12 @@ static void unregister_sched_domain_sysctl(void)
 	if (sd_sysctl_header)
 		unregister_sysctl_table(sd_sysctl_header);
 	sd_sysctl_header = NULL;
-	if (sd_ctl_dir[0].child)
-		sd_free_ctl_entry(&sd_ctl_dir[0].child);
+	if (sd_ctl_dir[0].child) {
+		sd_free_ctl_entry(sd_ctl_dir[0].child);
+		pax_open_kernel();
+		sd_ctl_dir[0].child = NULL;
+		pax_close_kernel();
+	}
 }
 #else
 static void register_sched_domain_sysctl(void)
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index fea7d33..84faa94 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1857,7 +1857,7 @@ void task_numa_fault(int last_cpupid, int mem_node, int pages, int flags)
 
 static void reset_ptenuma_scan(struct task_struct *p)
 {
-	ACCESS_ONCE(p->mm->numa_scan_seq)++;
+	ACCESS_ONCE_RW(p->mm->numa_scan_seq)++;
 	p->mm->numa_scan_offset = 0;
 }
 
@@ -7289,7 +7289,7 @@ static void nohz_idle_balance(struct rq *this_rq, enum cpu_idle_type idle) { }
  * run_rebalance_domains is triggered when needed from the scheduler tick.
  * Also triggered for nohz idle balancing (with nohz_balancing_kick set).
  */
-static void run_rebalance_domains(struct softirq_action *h)
+static __latent_entropy void run_rebalance_domains(void)
 {
 	struct rq *this_rq = this_rq();
 	enum cpu_idle_type idle = this_rq->idle_balance ?
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 31cc02e..734fb85 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1153,7 +1153,7 @@ struct sched_class {
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	void (*task_move_group) (struct task_struct *p, int on_rq);
 #endif
-};
+} __do_const;
 
 static inline void put_prev_task(struct rq *rq, struct task_struct *prev)
 {
diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 301bbc2..eda2da3 100644
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -39,7 +39,7 @@
  *         is only needed for handling filters shared across tasks.
  * @prev: points to a previously installed, or inherited, filter
  * @len: the number of instructions in the program
- * @insnsi: the BPF program instructions to evaluate
+ * @insns: the BPF program instructions to evaluate
  *
  * seccomp_filter objects are organized in a tree linked via the @prev
  * pointer.  For any task, it appears to be a singly-linked list starting
@@ -54,32 +54,61 @@
 struct seccomp_filter {
 	atomic_t usage;
 	struct seccomp_filter *prev;
-	struct sk_filter *prog;
+	unsigned short len;  /* Instruction count */
+	struct sock_filter insns[];
 };
 
 /* Limit any path through the tree to 256KB worth of instructions. */
 #define MAX_INSNS_PER_PATH ((1 << 18) / sizeof(struct sock_filter))
 
-/*
+/**
+ * get_u32 - returns a u32 offset into data
+ * @data: a unsigned 64 bit value
+ * @index: 0 or 1 to return the first or second 32-bits
+ *
+ * This inline exists to hide the length of unsigned long.  If a 32-bit
+ * unsigned long is passed in, it will be extended and the top 32-bits will be
+ * 0. If it is a 64-bit unsigned long, then whatever data is resident will be
+ * properly returned.
+ *
  * Endianness is explicitly ignored and left for BPF program authors to manage
  * as per the specific architecture.
  */
-static void populate_seccomp_data(struct seccomp_data *sd)
+static inline u32 get_u32(u64 data, int index)
 {
-	struct task_struct *task = current;
-	struct pt_regs *regs = task_pt_regs(task);
-	unsigned long args[6];
+	return ((u32 *)&data)[index];
+}
 
-	sd->nr = syscall_get_nr(task, regs);
-	sd->arch = syscall_get_arch();
-	syscall_get_arguments(task, regs, 0, 6, args);
-	sd->args[0] = args[0];
-	sd->args[1] = args[1];
-	sd->args[2] = args[2];
-	sd->args[3] = args[3];
-	sd->args[4] = args[4];
-	sd->args[5] = args[5];
-	sd->instruction_pointer = KSTK_EIP(task);
+/* Helper for bpf_load below. */
+#define BPF_DATA(_name) offsetof(struct seccomp_data, _name)
+/**
+ * bpf_load: checks and returns a pointer to the requested offset
+ * @off: offset into struct seccomp_data to load from
+ *
+ * Returns the requested 32-bits of data.
+ * seccomp_check_filter() should assure that @off is 32-bit aligned
+ * and not out of bounds.  Failure to do so is a BUG.
+ */
+u32 seccomp_bpf_load(int off)
+{
+	struct pt_regs *regs = task_pt_regs(current);
+	if (off == BPF_DATA(nr))
+		return syscall_get_nr(current, regs);
+	if (off == BPF_DATA(arch))
+		return syscall_get_arch();
+	if (off >= BPF_DATA(args[0]) && off < BPF_DATA(args[6])) {
+		unsigned long value;
+		int arg = (off - BPF_DATA(args[0])) / sizeof(u64);
+		int index = !!(off % sizeof(u64));
+		syscall_get_arguments(current, regs, arg, 1, &value);
+		return get_u32(value, index);
+	}
+	if (off == BPF_DATA(instruction_pointer))
+		return get_u32(KSTK_EIP(current), 0);
+	if (off == BPF_DATA(instruction_pointer) + sizeof(u32))
+		return get_u32(KSTK_EIP(current), 1);
+	/* seccomp_check_filter should make this impossible. */
+	BUG();
 }
 
 /**
@@ -103,59 +132,59 @@ static int seccomp_check_filter(struct sock_filter *filter, unsigned int flen)
 		u32 k = ftest->k;
 
 		switch (code) {
-		case BPF_LD | BPF_W | BPF_ABS:
-			ftest->code = BPF_LDX | BPF_W | BPF_ABS;
+		case BPF_S_LD_W_ABS:
+			ftest->code = BPF_S_ANC_SECCOMP_LD_W;
 			/* 32-bit aligned and not out of bounds. */
 			if (k >= sizeof(struct seccomp_data) || k & 3)
 				return -EINVAL;
 			continue;
-		case BPF_LD | BPF_W | BPF_LEN:
-			ftest->code = BPF_LD | BPF_IMM;
+		case BPF_S_LD_W_LEN:
+			ftest->code = BPF_S_LD_IMM;
 			ftest->k = sizeof(struct seccomp_data);
 			continue;
-		case BPF_LDX | BPF_W | BPF_LEN:
-			ftest->code = BPF_LDX | BPF_IMM;
+		case BPF_S_LDX_W_LEN:
+			ftest->code = BPF_S_LDX_IMM;
 			ftest->k = sizeof(struct seccomp_data);
 			continue;
 		/* Explicitly include allowed calls. */
-		case BPF_RET | BPF_K:
-		case BPF_RET | BPF_A:
-		case BPF_ALU | BPF_ADD | BPF_K:
-		case BPF_ALU | BPF_ADD | BPF_X:
-		case BPF_ALU | BPF_SUB | BPF_K:
-		case BPF_ALU | BPF_SUB | BPF_X:
-		case BPF_ALU | BPF_MUL | BPF_K:
-		case BPF_ALU | BPF_MUL | BPF_X:
-		case BPF_ALU | BPF_DIV | BPF_K:
-		case BPF_ALU | BPF_DIV | BPF_X:
-		case BPF_ALU | BPF_AND | BPF_K:
-		case BPF_ALU | BPF_AND | BPF_X:
-		case BPF_ALU | BPF_OR | BPF_K:
-		case BPF_ALU | BPF_OR | BPF_X:
-		case BPF_ALU | BPF_XOR | BPF_K:
-		case BPF_ALU | BPF_XOR | BPF_X:
-		case BPF_ALU | BPF_LSH | BPF_K:
-		case BPF_ALU | BPF_LSH | BPF_X:
-		case BPF_ALU | BPF_RSH | BPF_K:
-		case BPF_ALU | BPF_RSH | BPF_X:
-		case BPF_ALU | BPF_NEG:
-		case BPF_LD | BPF_IMM:
-		case BPF_LDX | BPF_IMM:
-		case BPF_MISC | BPF_TAX:
-		case BPF_MISC | BPF_TXA:
-		case BPF_LD | BPF_MEM:
-		case BPF_LDX | BPF_MEM:
-		case BPF_ST:
-		case BPF_STX:
-		case BPF_JMP | BPF_JA:
-		case BPF_JMP | BPF_JEQ | BPF_K:
-		case BPF_JMP | BPF_JEQ | BPF_X:
-		case BPF_JMP | BPF_JGE | BPF_K:
-		case BPF_JMP | BPF_JGE | BPF_X:
-		case BPF_JMP | BPF_JGT | BPF_K:
-		case BPF_JMP | BPF_JGT | BPF_X:
-		case BPF_JMP | BPF_JSET | BPF_K:
-		case BPF_JMP | BPF_JSET | BPF_X:
+		case BPF_S_RET_K:
+		case BPF_S_RET_A:
+		case BPF_S_ALU_ADD_K:
+		case BPF_S_ALU_ADD_X:
+		case BPF_S_ALU_SUB_K:
+		case BPF_S_ALU_SUB_X:
+		case BPF_S_ALU_MUL_K:
+		case BPF_S_ALU_MUL_X:
+		case BPF_S_ALU_DIV_X:
+		case BPF_S_ALU_AND_K:
+		case BPF_S_ALU_AND_X:
+		case BPF_S_ALU_OR_K:
+		case BPF_S_ALU_OR_X:
+		case BPF_S_ALU_XOR_K:
+		case BPF_S_ALU_XOR_X:
+		case BPF_S_ALU_LSH_K:
+		case BPF_S_ALU_LSH_X:
+		case BPF_S_ALU_RSH_K:
+		case BPF_S_ALU_RSH_X:
+		case BPF_S_ALU_NEG:
+		case BPF_S_LD_IMM:
+		case BPF_S_LDX_IMM:
+		case BPF_S_MISC_TAX:
+		case BPF_S_MISC_TXA:
+		case BPF_S_ALU_DIV_K:
+		case BPF_S_LD_MEM:
+		case BPF_S_LDX_MEM:
+		case BPF_S_ST:
+		case BPF_S_STX:
+		case BPF_S_JMP_JA:
+		case BPF_S_JMP_JEQ_K:
+		case BPF_S_JMP_JEQ_X:
+		case BPF_S_JMP_JGE_K:
+		case BPF_S_JMP_JGE_X:
+		case BPF_S_JMP_JGT_K:
+		case BPF_S_JMP_JGT_X:
+		case BPF_S_JMP_JSET_K:
+		case BPF_S_JMP_JSET_X:
 			continue;
 		default:
 			return -EINVAL;
@@ -173,22 +202,18 @@ static int seccomp_check_filter(struct sock_filter *filter, unsigned int flen)
 static u32 seccomp_run_filters(int syscall)
 {
 	struct seccomp_filter *f;
-	struct seccomp_data sd;
 	u32 ret = SECCOMP_RET_ALLOW;
 
 	/* Ensure unexpected behavior doesn't result in failing open. */
 	if (WARN_ON(current->seccomp.filter == NULL))
 		return SECCOMP_RET_KILL;
 
-	populate_seccomp_data(&sd);
-
 	/*
 	 * All filters in the list are evaluated and the lowest BPF return
 	 * value always takes priority (ignoring the DATA).
 	 */
 	for (f = current->seccomp.filter; f; f = f->prev) {
-		u32 cur_ret = SK_RUN_FILTER(f->prog, (void *)&sd);
-
+		u32 cur_ret = sk_run_filter(NULL, f->insns);
 		if ((cur_ret & SECCOMP_RET_ACTION) < (ret & SECCOMP_RET_ACTION))
 			ret = cur_ret;
 	}
@@ -206,20 +231,18 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
 	struct seccomp_filter *filter;
 	unsigned long fp_size = fprog->len * sizeof(struct sock_filter);
 	unsigned long total_insns = fprog->len;
-	struct sock_filter *fp;
-	int new_len;
 	long ret;
 
 	if (fprog->len == 0 || fprog->len > BPF_MAXINSNS)
 		return -EINVAL;
 
 	for (filter = current->seccomp.filter; filter; filter = filter->prev)
-		total_insns += filter->prog->len + 4;  /* include a 4 instr penalty */
+		total_insns += filter->len + 4;  /* include a 4 instr penalty */
 	if (total_insns > MAX_INSNS_PER_PATH)
 		return -ENOMEM;
 
 	/*
-	 * Installing a seccomp filter requires that the task has
+	 * Installing a seccomp filter requires that the task have
 	 * CAP_SYS_ADMIN in its namespace or be running with no_new_privs.
 	 * This avoids scenarios where unprivileged tasks can affect the
 	 * behavior of privileged children.
@@ -229,51 +252,28 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
 				     CAP_SYS_ADMIN) != 0)
 		return -EACCES;
 
-	fp = kzalloc(fp_size, GFP_KERNEL|__GFP_NOWARN);
-	if (!fp)
-		return -ENOMEM;
-
-	/* Copy the instructions from fprog. */
-	ret = -EFAULT;
-	if (copy_from_user(fp, fprog->filter, fp_size))
-		goto free_prog;
-
-	/* Check and rewrite the fprog via the skb checker */
-	ret = sk_chk_filter(fp, fprog->len);
-	if (ret)
-		goto free_prog;
-
-	/* Check and rewrite the fprog for seccomp use */
-	ret = seccomp_check_filter(fp, fprog->len);
-	if (ret)
-		goto free_prog;
-
-	/* Convert 'sock_filter' insns to 'sock_filter_int' insns */
-	ret = sk_convert_filter(fp, fprog->len, NULL, &new_len);
-	if (ret)
-		goto free_prog;
-
 	/* Allocate a new seccomp_filter */
-	ret = -ENOMEM;
-	filter = kzalloc(sizeof(struct seccomp_filter),
+	filter = kzalloc(sizeof(struct seccomp_filter) + fp_size,
 			 GFP_KERNEL|__GFP_NOWARN);
 	if (!filter)
-		goto free_prog;
-
-	filter->prog = kzalloc(sk_filter_size(new_len),
-			       GFP_KERNEL|__GFP_NOWARN);
-	if (!filter->prog)
-		goto free_filter;
-
-	ret = sk_convert_filter(fp, fprog->len, filter->prog->insnsi, &new_len);
-	if (ret)
-		goto free_filter_prog;
-	kfree(fp);
-
+		return -ENOMEM;
 	atomic_set(&filter->usage, 1);
-	filter->prog->len = new_len;
+	filter->len = fprog->len;
 
-	sk_filter_select_runtime(filter->prog);
+	/* Copy the instructions from fprog. */
+	ret = -EFAULT;
+	if (copy_from_user(filter->insns, fprog->filter, fp_size))
+		goto fail;
+
+	/* Check and rewrite the fprog via the skb checker */
+	ret = sk_chk_filter(filter->insns, filter->len);
+	if (ret)
+		goto fail;
+
+	/* Check and rewrite the fprog for seccomp use */
+	ret = seccomp_check_filter(filter->insns, filter->len);
+	if (ret)
+		goto fail;
 
 	/*
 	 * If there is an existing filter, make it the prev and don't drop its
@@ -282,13 +282,8 @@ static long seccomp_attach_filter(struct sock_fprog *fprog)
 	filter->prev = current->seccomp.filter;
 	current->seccomp.filter = filter;
 	return 0;
-
-free_filter_prog:
-	kfree(filter->prog);
-free_filter:
+fail:
 	kfree(filter);
-free_prog:
-	kfree(fp);
 	return ret;
 }
 
@@ -298,7 +293,7 @@ free_prog:
  *
  * Returns 0 on success and non-zero otherwise.
  */
-static long seccomp_attach_user_filter(char __user *user_filter)
+long seccomp_attach_user_filter(char __user *user_filter)
 {
 	struct sock_fprog fprog;
 	long ret = -EFAULT;
@@ -337,7 +332,6 @@ void put_seccomp_filter(struct task_struct *tsk)
 	while (orig && atomic_dec_and_test(&orig->usage)) {
 		struct seccomp_filter *freeme = orig;
 		orig = orig->prev;
-		sk_filter_free(freeme->prog);
 		kfree(freeme);
 	}
 }
diff --git a/kernel/signal.c b/kernel/signal.c
index a4077e9..f0d4e5c 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -53,12 +53,12 @@ static struct kmem_cache *sigqueue_cachep;
 
 int print_fatal_signals __read_mostly;
 
-static void __user *sig_handler(struct task_struct *t, int sig)
+static __sighandler_t sig_handler(struct task_struct *t, int sig)
 {
 	return t->sighand->action[sig - 1].sa.sa_handler;
 }
 
-static int sig_handler_ignored(void __user *handler, int sig)
+static int sig_handler_ignored(__sighandler_t handler, int sig)
 {
 	/* Is it explicitly or implicitly ignored? */
 	return handler == SIG_IGN ||
@@ -67,7 +67,7 @@ static int sig_handler_ignored(void __user *handler, int sig)
 
 static int sig_task_ignored(struct task_struct *t, int sig, bool force)
 {
-	void __user *handler;
+	__sighandler_t handler;
 
 	handler = sig_handler(t, sig);
 
@@ -372,6 +372,9 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t flags, int override_rlimi
 	atomic_inc(&user->sigpending);
 	rcu_read_unlock();
 
+	if (!override_rlimit)
+		gr_learn_resource(t, RLIMIT_SIGPENDING, atomic_read(&user->sigpending), 1);
+
 	if (override_rlimit ||
 	    atomic_read(&user->sigpending) <=
 			task_rlimit(t, RLIMIT_SIGPENDING)) {
@@ -499,7 +502,7 @@ flush_signal_handlers(struct task_struct *t, int force_default)
 
 int unhandled_signal(struct task_struct *tsk, int sig)
 {
-	void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;
+	__sighandler_t handler = tsk->sighand->action[sig-1].sa.sa_handler;
 	if (is_global_init(tsk))
 		return 1;
 	if (handler != SIG_IGN && handler != SIG_DFL)
@@ -793,6 +796,13 @@ static int check_kill_permission(int sig, struct siginfo *info,
 		}
 	}
 
+	/* allow glibc communication via tgkill to other threads in our
+	   thread group */
+	if ((info == SEND_SIG_NOINFO || info->si_code != SI_TKILL ||
+	     sig != (SIGRTMIN+1) || task_tgid_vnr(t) != info->si_pid)
+	    && gr_handle_signal(t, sig))
+		return -EPERM;
+
 	return security_task_kill(t, info, sig, 0);
 }
 
@@ -1176,7 +1186,7 @@ __group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
 	return send_signal(sig, info, p, 1);
 }
 
-static int
+int
 specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
 {
 	return send_signal(sig, info, t, 0);
@@ -1213,6 +1223,7 @@ force_sig_info(int sig, struct siginfo *info, struct task_struct *t)
 	unsigned long int flags;
 	int ret, blocked, ignored;
 	struct k_sigaction *action;
+	int is_unhandled = 0;
 
 	spin_lock_irqsave(&t->sighand->siglock, flags);
 	action = &t->sighand->action[sig-1];
@@ -1227,9 +1238,18 @@ force_sig_info(int sig, struct siginfo *info, struct task_struct *t)
 	}
 	if (action->sa.sa_handler == SIG_DFL)
 		t->signal->flags &= ~SIGNAL_UNKILLABLE;
+	if (action->sa.sa_handler == SIG_IGN || action->sa.sa_handler == SIG_DFL)
+		is_unhandled = 1;
 	ret = specific_send_sig_info(sig, info, t);
 	spin_unlock_irqrestore(&t->sighand->siglock, flags);
 
+	/* only deal with unhandled signals, java etc trigger SIGSEGV during
+	   normal operation */
+	if (is_unhandled) {
+		gr_log_signal(sig, !is_si_special(info) ? info->si_addr : NULL, t);
+		gr_handle_crash(t, sig);
+	}
+
 	return ret;
 }
 
@@ -1296,8 +1316,11 @@ int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
 	ret = check_kill_permission(sig, info, p);
 	rcu_read_unlock();
 
-	if (!ret && sig)
+	if (!ret && sig) {
 		ret = do_send_sig_info(sig, info, p, true);
+		if (!ret)
+			gr_log_signal(sig, !is_si_special(info) ? info->si_addr : NULL, p);
+	}
 
 	return ret;
 }
@@ -2903,7 +2926,15 @@ do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info)
 	int error = -ESRCH;
 
 	rcu_read_lock();
-	p = find_task_by_vpid(pid);
+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
+	/* allow glibc communication via tgkill to other threads in our
+	   thread group */
+	if (grsec_enable_chroot_findtask && info->si_code == SI_TKILL &&
+	    sig == (SIGRTMIN+1) && tgid == info->si_pid)	    
+		p = find_task_by_vpid_unrestricted(pid);
+	else
+#endif
+		p = find_task_by_vpid(pid);
 	if (p && (tgid <= 0 || task_tgid_vnr(p) == tgid)) {
 		error = check_kill_permission(sig, info, p);
 		/*
@@ -3236,8 +3267,8 @@ COMPAT_SYSCALL_DEFINE2(sigaltstack,
 	}
 	seg = get_fs();
 	set_fs(KERNEL_DS);
-	ret = do_sigaltstack((stack_t __force __user *) (uss_ptr ? &uss : NULL),
-			     (stack_t __force __user *) &uoss,
+	ret = do_sigaltstack((stack_t __force_user *) (uss_ptr ? &uss : NULL),
+			     (stack_t __force_user *) &uoss,
 			     compat_user_stack_pointer());
 	set_fs(seg);
 	if (ret >= 0 && uoss_ptr)  {
diff --git a/kernel/smpboot.c b/kernel/smpboot.c
index eb89e18..a4e6792 100644
--- a/kernel/smpboot.c
+++ b/kernel/smpboot.c
@@ -288,7 +288,7 @@ int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread)
 		}
 		smpboot_unpark_thread(plug_thread, cpu);
 	}
-	list_add(&plug_thread->list, &hotplug_threads);
+	pax_list_add(&plug_thread->list, &hotplug_threads);
 out:
 	mutex_unlock(&smpboot_threads_lock);
 	return ret;
@@ -305,7 +305,7 @@ void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread)
 {
 	get_online_cpus();
 	mutex_lock(&smpboot_threads_lock);
-	list_del(&plug_thread->list);
+	pax_list_del(&plug_thread->list);
 	smpboot_destroy_threads(plug_thread);
 	mutex_unlock(&smpboot_threads_lock);
 	put_online_cpus();
diff --git a/kernel/softirq.c b/kernel/softirq.c
index 5918d22..e95d1926 100644
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -53,7 +53,7 @@ irq_cpustat_t irq_stat[NR_CPUS] ____cacheline_aligned;
 EXPORT_SYMBOL(irq_stat);
 #endif
 
-static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp;
+static struct softirq_action softirq_vec[NR_SOFTIRQS] __read_only __aligned(PAGE_SIZE);
 
 DEFINE_PER_CPU(struct task_struct *, ksoftirqd);
 
@@ -266,7 +266,7 @@ restart:
 		kstat_incr_softirqs_this_cpu(vec_nr);
 
 		trace_softirq_entry(vec_nr);
-		h->action(h);
+		h->action();
 		trace_softirq_exit(vec_nr);
 		if (unlikely(prev_count != preempt_count())) {
 			pr_err("huh, entered softirq %u %s %p with preempt_count %08x, exited with %08x?\n",
@@ -426,7 +426,7 @@ void __raise_softirq_irqoff(unsigned int nr)
 	or_softirq_pending(1UL << nr);
 }
 
-void open_softirq(int nr, void (*action)(struct softirq_action *))
+void __init open_softirq(int nr, void (*action)(void))
 {
 	softirq_vec[nr].action = action;
 }
@@ -478,7 +478,7 @@ void __tasklet_hi_schedule_first(struct tasklet_struct *t)
 }
 EXPORT_SYMBOL(__tasklet_hi_schedule_first);
 
-static void tasklet_action(struct softirq_action *a)
+static void tasklet_action(void)
 {
 	struct tasklet_struct *list;
 
@@ -514,7 +514,7 @@ static void tasklet_action(struct softirq_action *a)
 	}
 }
 
-static void tasklet_hi_action(struct softirq_action *a)
+static __latent_entropy void tasklet_hi_action(void)
 {
 	struct tasklet_struct *list;
 
@@ -741,7 +741,7 @@ static struct notifier_block cpu_nfb = {
 	.notifier_call = cpu_callback
 };
 
-static struct smp_hotplug_thread softirq_threads = {
+static struct smp_hotplug_thread softirq_threads __read_only = {
 	.store			= &ksoftirqd,
 	.thread_should_run	= ksoftirqd_should_run,
 	.thread_fn		= run_ksoftirqd,
diff --git a/kernel/sys.c b/kernel/sys.c
index 66a751e..a42497e 100644
--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -148,6 +148,12 @@ static int set_one_prio(struct task_struct *p, int niceval, int error)
 		error = -EACCES;
 		goto out;
 	}
+
+	if (gr_handle_chroot_setpriority(p, niceval)) {
+		error = -EACCES;
+		goto out;
+	}
+
 	no_nice = security_task_setnice(p, niceval);
 	if (no_nice) {
 		error = no_nice;
@@ -351,6 +357,20 @@ SYSCALL_DEFINE2(setregid, gid_t, rgid, gid_t, egid)
 			goto error;
 	}
 
+	if (gr_check_group_change(new->gid, new->egid, INVALID_GID))
+		goto error;
+
+	if (!gid_eq(new->gid, old->gid)) {
+		/* make sure we generate a learn log for what will
+		   end up being a role transition after a full-learning
+		   policy is generated
+		   CAP_SETGID is required to perform a transition
+		   we may not log a CAP_SETGID check above, e.g.
+		   in the case where new rgid = old egid
+		*/
+		gr_learn_cap(current, new, CAP_SETGID);
+	}
+
 	if (rgid != (gid_t) -1 ||
 	    (egid != (gid_t) -1 && !gid_eq(kegid, old->gid)))
 		new->sgid = new->egid;
@@ -386,6 +406,10 @@ SYSCALL_DEFINE1(setgid, gid_t, gid)
 	old = current_cred();
 
 	retval = -EPERM;
+
+	if (gr_check_group_change(kgid, kgid, kgid))
+		goto error;
+
 	if (ns_capable(old->user_ns, CAP_SETGID))
 		new->gid = new->egid = new->sgid = new->fsgid = kgid;
 	else if (gid_eq(kgid, old->gid) || gid_eq(kgid, old->sgid))
@@ -403,7 +427,7 @@ error:
 /*
  * change the user struct in a credentials set to match the new UID
  */
-static int set_user(struct cred *new)
+int set_user(struct cred *new)
 {
 	struct user_struct *new_user;
 
@@ -483,7 +507,18 @@ SYSCALL_DEFINE2(setreuid, uid_t, ruid, uid_t, euid)
 			goto error;
 	}
 
+	if (gr_check_user_change(new->uid, new->euid, INVALID_UID))
+		goto error;
+
 	if (!uid_eq(new->uid, old->uid)) {
+		/* make sure we generate a learn log for what will
+		   end up being a role transition after a full-learning
+		   policy is generated
+		   CAP_SETUID is required to perform a transition
+		   we may not log a CAP_SETUID check above, e.g.
+		   in the case where new ruid = old euid
+		*/
+		gr_learn_cap(current, new, CAP_SETUID);
 		retval = set_user(new);
 		if (retval < 0)
 			goto error;
@@ -533,6 +568,12 @@ SYSCALL_DEFINE1(setuid, uid_t, uid)
 	old = current_cred();
 
 	retval = -EPERM;
+
+	if (gr_check_crash_uid(kuid))
+		goto error;
+	if (gr_check_user_change(kuid, kuid, kuid))
+		goto error;
+
 	if (ns_capable(old->user_ns, CAP_SETUID)) {
 		new->suid = new->uid = kuid;
 		if (!uid_eq(kuid, old->uid)) {
@@ -602,6 +643,9 @@ SYSCALL_DEFINE3(setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
 			goto error;
 	}
 
+	if (gr_check_user_change(kruid, keuid, INVALID_UID))
+		goto error;
+
 	if (ruid != (uid_t) -1) {
 		new->uid = kruid;
 		if (!uid_eq(kruid, old->uid)) {
@@ -684,6 +728,9 @@ SYSCALL_DEFINE3(setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
 			goto error;
 	}
 
+	if (gr_check_group_change(krgid, kegid, INVALID_GID))
+		goto error;
+
 	if (rgid != (gid_t) -1)
 		new->gid = krgid;
 	if (egid != (gid_t) -1)
@@ -745,12 +792,16 @@ SYSCALL_DEFINE1(setfsuid, uid_t, uid)
 	    uid_eq(kuid, old->suid) || uid_eq(kuid, old->fsuid) ||
 	    ns_capable(old->user_ns, CAP_SETUID)) {
 		if (!uid_eq(kuid, old->fsuid)) {
+			if (gr_check_user_change(INVALID_UID, INVALID_UID, kuid))
+				goto error;
+
 			new->fsuid = kuid;
 			if (security_task_fix_setuid(new, old, LSM_SETID_FS) == 0)
 				goto change_okay;
 		}
 	}
 
+error:
 	abort_creds(new);
 	return old_fsuid;
 
@@ -783,12 +834,16 @@ SYSCALL_DEFINE1(setfsgid, gid_t, gid)
 	if (gid_eq(kgid, old->gid)  || gid_eq(kgid, old->egid)  ||
 	    gid_eq(kgid, old->sgid) || gid_eq(kgid, old->fsgid) ||
 	    ns_capable(old->user_ns, CAP_SETGID)) {
+		if (gr_check_group_change(INVALID_GID, INVALID_GID, kgid))
+			goto error;
+
 		if (!gid_eq(kgid, old->fsgid)) {
 			new->fsgid = kgid;
 			goto change_okay;
 		}
 	}
 
+error:
 	abort_creds(new);
 	return old_fsgid;
 
@@ -1167,19 +1222,19 @@ SYSCALL_DEFINE1(olduname, struct oldold_utsname __user *, name)
 		return -EFAULT;
 
 	down_read(&uts_sem);
-	error = __copy_to_user(&name->sysname, &utsname()->sysname,
+	error = __copy_to_user(name->sysname, &utsname()->sysname,
 			       __OLD_UTS_LEN);
 	error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->nodename, &utsname()->nodename,
+	error |= __copy_to_user(name->nodename, &utsname()->nodename,
 				__OLD_UTS_LEN);
 	error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->release, &utsname()->release,
+	error |= __copy_to_user(name->release, &utsname()->release,
 				__OLD_UTS_LEN);
 	error |= __put_user(0, name->release + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->version, &utsname()->version,
+	error |= __copy_to_user(name->version, &utsname()->version,
 				__OLD_UTS_LEN);
 	error |= __put_user(0, name->version + __OLD_UTS_LEN);
-	error |= __copy_to_user(&name->machine, &utsname()->machine,
+	error |= __copy_to_user(name->machine, &utsname()->machine,
 				__OLD_UTS_LEN);
 	error |= __put_user(0, name->machine + __OLD_UTS_LEN);
 	up_read(&uts_sem);
@@ -1381,6 +1436,13 @@ int do_prlimit(struct task_struct *tsk, unsigned int resource,
 			 */
 			new_rlim->rlim_cur = 1;
 		}
+		/* Handle the case where a fork and setuid occur and then RLIMIT_NPROC
+		   is changed to a lower value.  Since tasks can be created by the same
+		   user in between this limit change and an execve by this task, force
+		   a recheck only for this task by setting PF_NPROC_EXCEEDED
+		*/
+		if (resource == RLIMIT_NPROC && tsk->real_cred->user != INIT_USER)
+			tsk->flags |= PF_NPROC_EXCEEDED;
 	}
 	if (!retval) {
 		if (old_rlim)
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 75b22e2..65c0ac8 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -94,7 +94,6 @@
 
 
 #if defined(CONFIG_SYSCTL)
-
 /* External variables not in a header file. */
 extern int max_threads;
 extern int suid_dumpable;
@@ -115,19 +114,20 @@ extern int sysctl_nr_trim_pages;
 
 /* Constants used for minimum and  maximum */
 #ifdef CONFIG_LOCKUP_DETECTOR
-static int sixty = 60;
+static int sixty __read_only = 60;
 #endif
 
-static int __maybe_unused neg_one = -1;
+static int __maybe_unused neg_one __read_only = -1;
 
-static int zero;
-static int __maybe_unused one = 1;
-static int __maybe_unused two = 2;
-static int __maybe_unused four = 4;
-static unsigned long one_ul = 1;
-static int one_hundred = 100;
+static int zero __read_only = 0;
+static int __maybe_unused one __read_only = 1;
+static int __maybe_unused two __read_only = 2;
+static int __maybe_unused three __read_only = 3;
+static int __maybe_unused four __read_only = 4;
+static unsigned long one_ul __read_only = 1;
+static int one_hundred __read_only = 100;
 #ifdef CONFIG_PRINTK
-static int ten_thousand = 10000;
+static int ten_thousand __read_only = 10000;
 #endif
 
 /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
@@ -181,10 +181,8 @@ static int proc_taint(struct ctl_table *table, int write,
 			       void __user *buffer, size_t *lenp, loff_t *ppos);
 #endif
 
-#ifdef CONFIG_PRINTK
 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
 				void __user *buffer, size_t *lenp, loff_t *ppos);
-#endif
 
 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
 		void __user *buffer, size_t *lenp, loff_t *ppos);
@@ -215,6 +213,8 @@ static int sysrq_sysctl_handler(struct ctl_table *table, int write,
 
 #endif
 
+extern struct ctl_table grsecurity_table[];
+
 static struct ctl_table kern_table[];
 static struct ctl_table vm_table[];
 static struct ctl_table fs_table[];
@@ -229,6 +229,20 @@ extern struct ctl_table epoll_table[];
 int sysctl_legacy_va_layout;
 #endif
 
+#ifdef CONFIG_PAX_SOFTMODE
+static ctl_table pax_table[] = {
+	{
+		.procname	= "softmode",
+		.data		= &pax_softmode,
+		.maxlen		= sizeof(unsigned int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+	},
+
+	{ }
+};
+#endif
+
 /* The default sysctl tables: */
 
 static struct ctl_table sysctl_base_table[] = {
@@ -277,6 +291,22 @@ static int max_extfrag_threshold = 1000;
 #endif
 
 static struct ctl_table kern_table[] = {
+#if defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_ROFS)
+	{
+		.procname	= "grsecurity",
+		.mode		= 0500,
+		.child		= grsecurity_table,
+	},
+#endif
+
+#ifdef CONFIG_PAX_SOFTMODE
+	{
+		.procname	= "pax",
+		.mode		= 0500,
+		.child		= pax_table,
+	},
+#endif
+
 	{
 		.procname	= "sched_child_runs_first",
 		.data		= &sysctl_sched_child_runs_first,
@@ -641,7 +671,7 @@ static struct ctl_table kern_table[] = {
 		.data		= &modprobe_path,
 		.maxlen		= KMOD_PATH_LEN,
 		.mode		= 0644,
-		.proc_handler	= proc_dostring,
+		.proc_handler	= proc_dostring_modpriv,
 	},
 	{
 		.procname	= "modules_disabled",
@@ -808,16 +838,20 @@ static struct ctl_table kern_table[] = {
 		.extra1		= &zero,
 		.extra2		= &one,
 	},
+#endif
 	{
 		.procname	= "kptr_restrict",
 		.data		= &kptr_restrict,
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax_sysadmin,
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+		.extra1		= &two,
+#else
 		.extra1		= &zero,
+#endif
 		.extra2		= &two,
 	},
-#endif
 	{
 		.procname	= "ngroups_max",
 		.data		= &ngroups_max,
@@ -1073,10 +1107,17 @@ static struct ctl_table kern_table[] = {
 	 */
 	{
 		.procname	= "perf_event_paranoid",
-		.data		= &sysctl_perf_event_paranoid,
-		.maxlen		= sizeof(sysctl_perf_event_paranoid),
+		.data		= &sysctl_perf_event_legitimately_concerned,
+		.maxlen		= sizeof(sysctl_perf_event_legitimately_concerned),
 		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
+		/* go ahead, be a hero */
+		.proc_handler	= proc_dointvec_minmax_sysadmin,
+		.extra1		= &neg_one,
+#ifdef CONFIG_GRKERNSEC_PERF_HARDEN
+		.extra2		= &three,
+#else
+		.extra2		= &two,
+#endif
 	},
 	{
 		.procname	= "perf_event_mlock_kb",
@@ -1338,6 +1379,13 @@ static struct ctl_table vm_table[] = {
 		.proc_handler	= proc_dointvec_minmax,
 		.extra1		= &zero,
 	},
+	{
+		.procname	= "heap_stack_gap",
+		.data		= &sysctl_heap_stack_gap,
+		.maxlen		= sizeof(sysctl_heap_stack_gap),
+		.mode		= 0644,
+		.proc_handler	= proc_doulongvec_minmax,
+	},
 #else
 	{
 		.procname	= "nr_trim_pages",
@@ -1827,6 +1875,16 @@ int proc_dostring(struct ctl_table *table, int write,
 			       (char __user *)buffer, lenp, ppos);
 }
 
+int proc_dostring_modpriv(struct ctl_table *table, int write,
+		  void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+	if (write && !capable(CAP_SYS_MODULE))
+		return -EPERM;
+
+	return _proc_do_string(table->data, table->maxlen, write,
+			       buffer, lenp, ppos);
+}
+
 static size_t proc_skip_spaces(char **buf)
 {
 	size_t ret;
@@ -1932,6 +1990,8 @@ static int proc_put_long(void __user **buf, size_t *size, unsigned long val,
 	len = strlen(tmp);
 	if (len > *size)
 		len = *size;
+	if (len > sizeof(tmp))
+		len = sizeof(tmp);
 	if (copy_to_user(*buf, tmp, len))
 		return -EFAULT;
 	*size -= len;
@@ -2109,7 +2169,7 @@ int proc_dointvec(struct ctl_table *table, int write,
 static int proc_taint(struct ctl_table *table, int write,
 			       void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table t;
+	ctl_table_no_const t;
 	unsigned long tmptaint = get_taint();
 	int err;
 
@@ -2137,7 +2197,6 @@ static int proc_taint(struct ctl_table *table, int write,
 	return err;
 }
 
-#ifdef CONFIG_PRINTK
 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
 				void __user *buffer, size_t *lenp, loff_t *ppos)
 {
@@ -2146,7 +2205,6 @@ static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
 
 	return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
 }
-#endif
 
 struct do_proc_dointvec_minmax_conv_param {
 	int *min;
@@ -2706,6 +2764,12 @@ int proc_dostring(struct ctl_table *table, int write,
 	return -ENOSYS;
 }
 
+int proc_dostring_modpriv(struct ctl_table *table, int write,
+		  void __user *buffer, size_t *lenp, loff_t *ppos)
+{
+	return -ENOSYS;
+}
+
 int proc_dointvec(struct ctl_table *table, int write,
 		  void __user *buffer, size_t *lenp, loff_t *ppos)
 {
@@ -2762,5 +2826,6 @@ EXPORT_SYMBOL(proc_dointvec_minmax);
 EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
 EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
 EXPORT_SYMBOL(proc_dostring);
+EXPORT_SYMBOL(proc_dostring_modpriv);
 EXPORT_SYMBOL(proc_doulongvec_minmax);
 EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 13d2f7c..c93d0b0 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -28,9 +28,12 @@
 #include <linux/fs.h>
 #include <linux/file.h>
 #include <linux/pid_namespace.h>
+#include <linux/grsecurity.h>
 #include <net/genetlink.h>
 #include <linux/atomic.h>
 
+extern int gr_is_taskstats_denied(int pid);
+
 /*
  * Maximum length of a cpumask that can be specified in
  * the TASKSTATS_CMD_ATTR_REGISTER/DEREGISTER_CPUMASK attribute
@@ -576,6 +579,9 @@ err:
 
 static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info)
 {
+	if (gr_is_taskstats_denied(current->pid))
+		return -EACCES;
+
 	if (info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK])
 		return cmd_attr_register_cpumask(info);
 	else if (info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK])
diff --git a/kernel/time.c b/kernel/time.c
index 7c7964c..2a0d412 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -172,6 +172,11 @@ int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz)
 		return error;
 
 	if (tz) {
+		/* we log in do_settimeofday called below, so don't log twice
+		*/
+		if (!tv)
+			gr_log_timechange();
+
 		sys_tz = *tz;
 		update_vsyscall_tz();
 		if (firsttime) {
diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
index fe75444..b8a1463 100644
--- a/kernel/time/alarmtimer.c
+++ b/kernel/time/alarmtimer.c
@@ -464,18 +464,26 @@ static enum alarmtimer_type clock2alarm(clockid_t clockid)
 static enum alarmtimer_restart alarm_handle_timer(struct alarm *alarm,
 							ktime_t now)
 {
+	unsigned long flags;
 	struct k_itimer *ptr = container_of(alarm, struct k_itimer,
 						it.alarm.alarmtimer);
-	if (posix_timer_event(ptr, 0) != 0)
-		ptr->it_overrun++;
+	enum alarmtimer_restart result = ALARMTIMER_NORESTART;
+
+	spin_lock_irqsave(&ptr->it_lock, flags);
+	if ((ptr->it_sigev_notify & ~SIGEV_THREAD_ID) != SIGEV_NONE) {
+		if (posix_timer_event(ptr, 0) != 0)
+			ptr->it_overrun++;
+	}
 
 	/* Re-add periodic timers */
 	if (ptr->it.alarm.interval.tv64) {
 		ptr->it_overrun += alarm_forward(alarm, now,
 						ptr->it.alarm.interval);
-		return ALARMTIMER_RESTART;
+		result = ALARMTIMER_RESTART;
 	}
-	return ALARMTIMER_NORESTART;
+	spin_unlock_irqrestore(&ptr->it_lock, flags);
+
+	return result;
 }
 
 /**
@@ -541,18 +549,22 @@ static int alarm_timer_create(struct k_itimer *new_timer)
  * @new_timer: k_itimer pointer
  * @cur_setting: itimerspec data to fill
  *
- * Copies the itimerspec data out from the k_itimer
+ * Copies out the current itimerspec data
  */
 static void alarm_timer_get(struct k_itimer *timr,
 				struct itimerspec *cur_setting)
 {
-	memset(cur_setting, 0, sizeof(struct itimerspec));
+	ktime_t relative_expiry_time =
+		alarm_expires_remaining(&(timr->it.alarm.alarmtimer));
 
-	cur_setting->it_interval =
-			ktime_to_timespec(timr->it.alarm.interval);
-	cur_setting->it_value =
-		ktime_to_timespec(timr->it.alarm.alarmtimer.node.expires);
-	return;
+	if (ktime_to_ns(relative_expiry_time) > 0) {
+		cur_setting->it_value = ktime_to_timespec(relative_expiry_time);
+	} else {
+		cur_setting->it_value.tv_sec = 0;
+		cur_setting->it_value.tv_nsec = 0;
+	}
+
+	cur_setting->it_interval = ktime_to_timespec(timr->it.alarm.interval);
 }
 
 /**
@@ -811,7 +823,7 @@ static int __init alarmtimer_init(void)
 	struct platform_device *pdev;
 	int error = 0;
 	int i;
-	struct k_clock alarm_clock = {
+	static struct k_clock alarm_clock = {
 		.clock_getres	= alarm_clock_getres,
 		.clock_get	= alarm_clock_get,
 		.timer_create	= alarm_timer_create,
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 32d8d6a..11486af 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
+#include <linux/grsecurity.h>
 #include <linux/syscore_ops.h>
 #include <linux/clocksource.h>
 #include <linux/jiffies.h>
@@ -502,6 +503,8 @@ int do_settimeofday(const struct timespec *tv)
 	if (!timespec_valid_strict(tv))
 		return -EINVAL;
 
+	gr_log_timechange();
+
 	raw_spin_lock_irqsave(&timekeeper_lock, flags);
 	write_seqcount_begin(&timekeeper_seq);
 
diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
index 61ed862..3b52c65 100644
--- a/kernel/time/timer_list.c
+++ b/kernel/time/timer_list.c
@@ -45,12 +45,16 @@ DECLARE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases);
 
 static void print_name_offset(struct seq_file *m, void *sym)
 {
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	SEQ_printf(m, "<%p>", NULL);
+#else
 	char symname[KSYM_NAME_LEN];
 
 	if (lookup_symbol_name((unsigned long)sym, symname) < 0)
 		SEQ_printf(m, "<%pK>", sym);
 	else
 		SEQ_printf(m, "%s", symname);
+#endif
 }
 
 static void
@@ -119,7 +123,11 @@ next_one:
 static void
 print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now)
 {
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	SEQ_printf(m, "  .base:       %p\n", NULL);
+#else
 	SEQ_printf(m, "  .base:       %pK\n", base);
+#endif
 	SEQ_printf(m, "  .index:      %d\n",
 			base->index);
 	SEQ_printf(m, "  .resolution: %Lu nsecs\n",
@@ -362,7 +370,11 @@ static int __init init_timer_list_procfs(void)
 {
 	struct proc_dir_entry *pe;
 
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+	pe = proc_create("timer_list", 0400, NULL, &timer_list_fops);
+#else
 	pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
+#endif
 	if (!pe)
 		return -ENOMEM;
 	return 0;
diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c
index 1fb08f2..ca4bb1e 100644
--- a/kernel/time/timer_stats.c
+++ b/kernel/time/timer_stats.c
@@ -116,7 +116,7 @@ static ktime_t time_start, time_stop;
 static unsigned long nr_entries;
 static struct entry entries[MAX_ENTRIES];
 
-static atomic_t overflow_count;
+static atomic_unchecked_t overflow_count;
 
 /*
  * The entries are in a hash-table, for fast lookup:
@@ -140,7 +140,7 @@ static void reset_entries(void)
 	nr_entries = 0;
 	memset(entries, 0, sizeof(entries));
 	memset(tstat_hash_table, 0, sizeof(tstat_hash_table));
-	atomic_set(&overflow_count, 0);
+	atomic_set_unchecked(&overflow_count, 0);
 }
 
 static struct entry *alloc_entry(void)
@@ -261,7 +261,7 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf,
 	if (likely(entry))
 		entry->count++;
 	else
-		atomic_inc(&overflow_count);
+		atomic_inc_unchecked(&overflow_count);
 
  out_unlock:
 	raw_spin_unlock_irqrestore(lock, flags);
@@ -269,12 +269,16 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf,
 
 static void print_name_offset(struct seq_file *m, unsigned long addr)
 {
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	seq_printf(m, "<%p>", NULL);
+#else
 	char symname[KSYM_NAME_LEN];
 
 	if (lookup_symbol_name(addr, symname) < 0)
-		seq_printf(m, "<%p>", (void *)addr);
+		seq_printf(m, "<%pK>", (void *)addr);
 	else
 		seq_printf(m, "%s", symname);
+#endif
 }
 
 static int tstats_show(struct seq_file *m, void *v)
@@ -300,8 +304,8 @@ static int tstats_show(struct seq_file *m, void *v)
 
 	seq_puts(m, "Timer Stats Version: v0.3\n");
 	seq_printf(m, "Sample period: %ld.%03ld s\n", period.tv_sec, ms);
-	if (atomic_read(&overflow_count))
-		seq_printf(m, "Overflow: %d entries\n", atomic_read(&overflow_count));
+	if (atomic_read_unchecked(&overflow_count))
+		seq_printf(m, "Overflow: %d entries\n", atomic_read_unchecked(&overflow_count));
 	seq_printf(m, "Collection: %s\n", timer_stats_active ? "active" : "inactive");
 
 	for (i = 0; i < nr_entries; i++) {
@@ -417,7 +421,11 @@ static int __init init_tstats_procfs(void)
 {
 	struct proc_dir_entry *pe;
 
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+	pe = proc_create("timer_stats", 0600, NULL, &tstats_fops);
+#else
 	pe = proc_create("timer_stats", 0644, NULL, &tstats_fops);
+#endif
 	if (!pe)
 		return -ENOMEM;
 	return 0;
diff --git a/kernel/timer.c b/kernel/timer.c
index 3bb01a3..0e7760e 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -1393,7 +1393,7 @@ void update_process_times(int user_tick)
 /*
  * This function runs timers and the timer-tq in bottom half context.
  */
-static void run_timer_softirq(struct softirq_action *h)
+static __latent_entropy void run_timer_softirq(void)
 {
 	struct tvec_base *base = __this_cpu_read(tvec_bases);
 
@@ -1456,7 +1456,7 @@ static void process_timeout(unsigned long __data)
  *
  * In all cases the return value is guaranteed to be non-negative.
  */
-signed long __sched schedule_timeout(signed long timeout)
+signed long __sched __intentional_overflow(-1) schedule_timeout(signed long timeout)
 {
 	struct timer_list timer;
 	unsigned long expire;
diff --git a/kernel/torture.c b/kernel/torture.c
index 40bb511..91190b9 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -484,7 +484,7 @@ static int torture_shutdown_notify(struct notifier_block *unused1,
 	mutex_lock(&fullstop_mutex);
 	if (ACCESS_ONCE(fullstop) == FULLSTOP_DONTSTOP) {
 		VERBOSE_TOROUT_STRING("Unscheduled system shutdown detected");
-		ACCESS_ONCE(fullstop) = FULLSTOP_SHUTDOWN;
+		ACCESS_ONCE_RW(fullstop) = FULLSTOP_SHUTDOWN;
 	} else {
 		pr_warn("Concurrent rmmod and shutdown illegal!\n");
 	}
@@ -551,14 +551,14 @@ static int torture_stutter(void *arg)
 		if (!torture_must_stop()) {
 			if (stutter > 1) {
 				schedule_timeout_interruptible(stutter - 1);
-				ACCESS_ONCE(stutter_pause_test) = 2;
+				ACCESS_ONCE_RW(stutter_pause_test) = 2;
 			}
 			schedule_timeout_interruptible(1);
-			ACCESS_ONCE(stutter_pause_test) = 1;
+			ACCESS_ONCE_RW(stutter_pause_test) = 1;
 		}
 		if (!torture_must_stop())
 			schedule_timeout_interruptible(stutter);
-		ACCESS_ONCE(stutter_pause_test) = 0;
+		ACCESS_ONCE_RW(stutter_pause_test) = 0;
 		torture_shutdown_absorb("torture_stutter");
 	} while (!torture_must_stop());
 	torture_kthread_stopping("torture_stutter");
@@ -645,7 +645,7 @@ bool torture_cleanup(void)
 		schedule_timeout_uninterruptible(10);
 		return true;
 	}
-	ACCESS_ONCE(fullstop) = FULLSTOP_RMMOD;
+	ACCESS_ONCE_RW(fullstop) = FULLSTOP_RMMOD;
 	mutex_unlock(&fullstop_mutex);
 	torture_shutdown_cleanup();
 	torture_shuffle_cleanup();
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index c1bd4ad..4b861dc 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -328,7 +328,7 @@ static ssize_t blk_dropped_read(struct file *filp, char __user *buffer,
 	struct blk_trace *bt = filp->private_data;
 	char buf[16];
 
-	snprintf(buf, sizeof(buf), "%u\n", atomic_read(&bt->dropped));
+	snprintf(buf, sizeof(buf), "%u\n", atomic_read_unchecked(&bt->dropped));
 
 	return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
 }
@@ -386,7 +386,7 @@ static int blk_subbuf_start_callback(struct rchan_buf *buf, void *subbuf,
 		return 1;
 
 	bt = buf->chan->private_data;
-	atomic_inc(&bt->dropped);
+	atomic_inc_unchecked(&bt->dropped);
 	return 0;
 }
 
@@ -487,7 +487,7 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
 
 	bt->dir = dir;
 	bt->dev = dev;
-	atomic_set(&bt->dropped, 0);
+	atomic_set_unchecked(&bt->dropped, 0);
 	INIT_LIST_HEAD(&bt->running_list);
 
 	ret = -EIO;
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index ac9d1da..ce98b35 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -1920,12 +1920,17 @@ ftrace_code_disable(struct module *mod, struct dyn_ftrace *rec)
 	if (unlikely(ftrace_disabled))
 		return 0;
 
+	ret = ftrace_arch_code_modify_prepare();
+	FTRACE_WARN_ON(ret);
+	if (ret)
+		return 0;
+
 	ret = ftrace_make_nop(mod, rec, MCOUNT_ADDR);
+	FTRACE_WARN_ON(ftrace_arch_code_modify_post_process());
 	if (ret) {
 		ftrace_bug(ret, ip);
-		return 0;
 	}
-	return 1;
+	return ret ? 0 : 1;
 }
 
 /*
@@ -4126,8 +4131,10 @@ static int ftrace_process_locs(struct module *mod,
 	if (!count)
 		return 0;
 
+	pax_open_kernel();
 	sort(start, count, sizeof(*start),
 	     ftrace_cmp_ips, ftrace_swap_ips);
+	pax_close_kernel();
 
 	start_pg = ftrace_allocate_pages(count);
 	if (!start_pg)
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index b95381e..af2fddd 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -352,9 +352,9 @@ struct buffer_data_page {
  */
 struct buffer_page {
 	struct list_head list;		/* list of buffer pages */
-	local_t		 write;		/* index for next write */
+	local_unchecked_t	 write;		/* index for next write */
 	unsigned	 read;		/* index for next read */
-	local_t		 entries;	/* entries on this page */
+	local_unchecked_t	 entries;	/* entries on this page */
 	unsigned long	 real_end;	/* real end of data */
 	struct buffer_data_page *page;	/* Actual data page */
 };
@@ -473,8 +473,8 @@ struct ring_buffer_per_cpu {
 	unsigned long			last_overrun;
 	local_t				entries_bytes;
 	local_t				entries;
-	local_t				overrun;
-	local_t				commit_overrun;
+	local_unchecked_t		overrun;
+	local_unchecked_t		commit_overrun;
 	local_t				dropped_events;
 	local_t				committing;
 	local_t				commits;
@@ -626,8 +626,22 @@ int ring_buffer_poll_wait(struct ring_buffer *buffer, int cpu,
 		work = &cpu_buffer->irq_work;
 	}
 
-	work->waiters_pending = true;
 	poll_wait(filp, &work->waiters, poll_table);
+	work->waiters_pending = true;
+	/*
+	 * There's a tight race between setting the waiters_pending and
+	 * checking if the ring buffer is empty.  Once the waiters_pending bit
+	 * is set, the next event will wake the task up, but we can get stuck
+	 * if there's only a single event in.
+	 *
+	 * FIXME: Ideally, we need a memory barrier on the writer side as well,
+	 * but adding a memory barrier to all events will cause too much of a
+	 * performance hit in the fast path.  We only need a memory barrier when
+	 * the buffer goes from empty to having content.  But as this race is
+	 * extremely small, and it's not a problem if another event comes in, we
+	 * will fix it later.
+	 */
+	smp_mb();
 
 	if ((cpu == RING_BUFFER_ALL_CPUS && !ring_buffer_empty(buffer)) ||
 	    (cpu != RING_BUFFER_ALL_CPUS && !ring_buffer_empty_cpu(buffer, cpu)))
@@ -991,8 +1005,8 @@ static int rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer,
 	 *
 	 * We add a counter to the write field to denote this.
 	 */
-	old_write = local_add_return(RB_WRITE_INTCNT, &next_page->write);
-	old_entries = local_add_return(RB_WRITE_INTCNT, &next_page->entries);
+	old_write = local_add_return_unchecked(RB_WRITE_INTCNT, &next_page->write);
+	old_entries = local_add_return_unchecked(RB_WRITE_INTCNT, &next_page->entries);
 
 	/*
 	 * Just make sure we have seen our old_write and synchronize
@@ -1020,8 +1034,8 @@ static int rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer,
 		 * cmpxchg to only update if an interrupt did not already
 		 * do it for us. If the cmpxchg fails, we don't care.
 		 */
-		(void)local_cmpxchg(&next_page->write, old_write, val);
-		(void)local_cmpxchg(&next_page->entries, old_entries, eval);
+		(void)local_cmpxchg_unchecked(&next_page->write, old_write, val);
+		(void)local_cmpxchg_unchecked(&next_page->entries, old_entries, eval);
 
 		/*
 		 * No need to worry about races with clearing out the commit.
@@ -1388,12 +1402,12 @@ static void rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer);
 
 static inline unsigned long rb_page_entries(struct buffer_page *bpage)
 {
-	return local_read(&bpage->entries) & RB_WRITE_MASK;
+	return local_read_unchecked(&bpage->entries) & RB_WRITE_MASK;
 }
 
 static inline unsigned long rb_page_write(struct buffer_page *bpage)
 {
-	return local_read(&bpage->write) & RB_WRITE_MASK;
+	return local_read_unchecked(&bpage->write) & RB_WRITE_MASK;
 }
 
 static int
@@ -1488,7 +1502,7 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned int nr_pages)
 			 * bytes consumed in ring buffer from here.
 			 * Increment overrun to account for the lost events.
 			 */
-			local_add(page_entries, &cpu_buffer->overrun);
+			local_add_unchecked(page_entries, &cpu_buffer->overrun);
 			local_sub(BUF_PAGE_SIZE, &cpu_buffer->entries_bytes);
 		}
 
@@ -2066,7 +2080,7 @@ rb_handle_head_page(struct ring_buffer_per_cpu *cpu_buffer,
 		 * it is our responsibility to update
 		 * the counters.
 		 */
-		local_add(entries, &cpu_buffer->overrun);
+		local_add_unchecked(entries, &cpu_buffer->overrun);
 		local_sub(BUF_PAGE_SIZE, &cpu_buffer->entries_bytes);
 
 		/*
@@ -2216,7 +2230,7 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
 		if (tail == BUF_PAGE_SIZE)
 			tail_page->real_end = 0;
 
-		local_sub(length, &tail_page->write);
+		local_sub_unchecked(length, &tail_page->write);
 		return;
 	}
 
@@ -2251,7 +2265,7 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
 		rb_event_set_padding(event);
 
 		/* Set the write back to the previous setting */
-		local_sub(length, &tail_page->write);
+		local_sub_unchecked(length, &tail_page->write);
 		return;
 	}
 
@@ -2263,7 +2277,7 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
 
 	/* Set write to end of buffer */
 	length = (tail + length) - BUF_PAGE_SIZE;
-	local_sub(length, &tail_page->write);
+	local_sub_unchecked(length, &tail_page->write);
 }
 
 /*
@@ -2289,7 +2303,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
 	 * about it.
 	 */
 	if (unlikely(next_page == commit_page)) {
-		local_inc(&cpu_buffer->commit_overrun);
+		local_inc_unchecked(&cpu_buffer->commit_overrun);
 		goto out_reset;
 	}
 
@@ -2345,7 +2359,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
 				      cpu_buffer->tail_page) &&
 				     (cpu_buffer->commit_page ==
 				      cpu_buffer->reader_page))) {
-				local_inc(&cpu_buffer->commit_overrun);
+				local_inc_unchecked(&cpu_buffer->commit_overrun);
 				goto out_reset;
 			}
 		}
@@ -2393,7 +2407,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
 		length += RB_LEN_TIME_EXTEND;
 
 	tail_page = cpu_buffer->tail_page;
-	write = local_add_return(length, &tail_page->write);
+	write = local_add_return_unchecked(length, &tail_page->write);
 
 	/* set write to only the index of the write */
 	write &= RB_WRITE_MASK;
@@ -2417,7 +2431,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
 	kmemcheck_annotate_bitfield(event, bitfield);
 	rb_update_event(cpu_buffer, event, length, add_timestamp, delta);
 
-	local_inc(&tail_page->entries);
+	local_inc_unchecked(&tail_page->entries);
 
 	/*
 	 * If this is the first commit on the page, then update
@@ -2450,7 +2464,7 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
 
 	if (bpage->page == (void *)addr && rb_page_write(bpage) == old_index) {
 		unsigned long write_mask =
-			local_read(&bpage->write) & ~RB_WRITE_MASK;
+			local_read_unchecked(&bpage->write) & ~RB_WRITE_MASK;
 		unsigned long event_length = rb_event_length(event);
 		/*
 		 * This is on the tail page. It is possible that
@@ -2460,7 +2474,7 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
 		 */
 		old_index += write_mask;
 		new_index += write_mask;
-		index = local_cmpxchg(&bpage->write, old_index, new_index);
+		index = local_cmpxchg_unchecked(&bpage->write, old_index, new_index);
 		if (index == old_index) {
 			/* update counters */
 			local_sub(event_length, &cpu_buffer->entries_bytes);
@@ -2852,7 +2866,7 @@ rb_decrement_entry(struct ring_buffer_per_cpu *cpu_buffer,
 
 	/* Do the likely case first */
 	if (likely(bpage->page == (void *)addr)) {
-		local_dec(&bpage->entries);
+		local_dec_unchecked(&bpage->entries);
 		return;
 	}
 
@@ -2864,7 +2878,7 @@ rb_decrement_entry(struct ring_buffer_per_cpu *cpu_buffer,
 	start = bpage;
 	do {
 		if (bpage->page == (void *)addr) {
-			local_dec(&bpage->entries);
+			local_dec_unchecked(&bpage->entries);
 			return;
 		}
 		rb_inc_page(cpu_buffer, &bpage);
@@ -3148,7 +3162,7 @@ static inline unsigned long
 rb_num_of_entries(struct ring_buffer_per_cpu *cpu_buffer)
 {
 	return local_read(&cpu_buffer->entries) -
-		(local_read(&cpu_buffer->overrun) + cpu_buffer->read);
+		(local_read_unchecked(&cpu_buffer->overrun) + cpu_buffer->read);
 }
 
 /**
@@ -3237,7 +3251,7 @@ unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu)
 		return 0;
 
 	cpu_buffer = buffer->buffers[cpu];
-	ret = local_read(&cpu_buffer->overrun);
+	ret = local_read_unchecked(&cpu_buffer->overrun);
 
 	return ret;
 }
@@ -3260,7 +3274,7 @@ ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu)
 		return 0;
 
 	cpu_buffer = buffer->buffers[cpu];
-	ret = local_read(&cpu_buffer->commit_overrun);
+	ret = local_read_unchecked(&cpu_buffer->commit_overrun);
 
 	return ret;
 }
@@ -3345,7 +3359,7 @@ unsigned long ring_buffer_overruns(struct ring_buffer *buffer)
 	/* if you care about this being correct, lock the buffer */
 	for_each_buffer_cpu(buffer, cpu) {
 		cpu_buffer = buffer->buffers[cpu];
-		overruns += local_read(&cpu_buffer->overrun);
+		overruns += local_read_unchecked(&cpu_buffer->overrun);
 	}
 
 	return overruns;
@@ -3516,8 +3530,8 @@ rb_get_reader_page(struct ring_buffer_per_cpu *cpu_buffer)
 	/*
 	 * Reset the reader page to size zero.
 	 */
-	local_set(&cpu_buffer->reader_page->write, 0);
-	local_set(&cpu_buffer->reader_page->entries, 0);
+	local_set_unchecked(&cpu_buffer->reader_page->write, 0);
+	local_set_unchecked(&cpu_buffer->reader_page->entries, 0);
 	local_set(&cpu_buffer->reader_page->page->commit, 0);
 	cpu_buffer->reader_page->real_end = 0;
 
@@ -3551,7 +3565,7 @@ rb_get_reader_page(struct ring_buffer_per_cpu *cpu_buffer)
 	 * want to compare with the last_overrun.
 	 */
 	smp_mb();
-	overwrite = local_read(&(cpu_buffer->overrun));
+	overwrite = local_read_unchecked(&(cpu_buffer->overrun));
 
 	/*
 	 * Here's the tricky part.
@@ -4123,8 +4137,8 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
 
 	cpu_buffer->head_page
 		= list_entry(cpu_buffer->pages, struct buffer_page, list);
-	local_set(&cpu_buffer->head_page->write, 0);
-	local_set(&cpu_buffer->head_page->entries, 0);
+	local_set_unchecked(&cpu_buffer->head_page->write, 0);
+	local_set_unchecked(&cpu_buffer->head_page->entries, 0);
 	local_set(&cpu_buffer->head_page->page->commit, 0);
 
 	cpu_buffer->head_page->read = 0;
@@ -4134,14 +4148,14 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
 
 	INIT_LIST_HEAD(&cpu_buffer->reader_page->list);
 	INIT_LIST_HEAD(&cpu_buffer->new_pages);
-	local_set(&cpu_buffer->reader_page->write, 0);
-	local_set(&cpu_buffer->reader_page->entries, 0);
+	local_set_unchecked(&cpu_buffer->reader_page->write, 0);
+	local_set_unchecked(&cpu_buffer->reader_page->entries, 0);
 	local_set(&cpu_buffer->reader_page->page->commit, 0);
 	cpu_buffer->reader_page->read = 0;
 
 	local_set(&cpu_buffer->entries_bytes, 0);
-	local_set(&cpu_buffer->overrun, 0);
-	local_set(&cpu_buffer->commit_overrun, 0);
+	local_set_unchecked(&cpu_buffer->overrun, 0);
+	local_set_unchecked(&cpu_buffer->commit_overrun, 0);
 	local_set(&cpu_buffer->dropped_events, 0);
 	local_set(&cpu_buffer->entries, 0);
 	local_set(&cpu_buffer->committing, 0);
@@ -4546,8 +4560,8 @@ int ring_buffer_read_page(struct ring_buffer *buffer,
 		rb_init_page(bpage);
 		bpage = reader->page;
 		reader->page = *data_page;
-		local_set(&reader->write, 0);
-		local_set(&reader->entries, 0);
+		local_set_unchecked(&reader->write, 0);
+		local_set_unchecked(&reader->entries, 0);
 		reader->read = 0;
 		*data_page = bpage;
 
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 291397e..db3836d 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3510,7 +3510,7 @@ int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set)
 	return 0;
 }
 
-int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled)
+int set_tracer_flag(struct trace_array *tr, unsigned long mask, int enabled)
 {
 	/* do nothing if flag is already set */
 	if (!!(trace_flags & mask) == !!enabled)
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 9258f5a..9b1e41e 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -1278,7 +1278,7 @@ extern const char *__stop___tracepoint_str[];
 void trace_printk_init_buffers(void);
 void trace_printk_start_comm(void);
 int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set);
-int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled);
+int set_tracer_flag(struct trace_array *tr, unsigned long mask, int enabled);
 
 /*
  * Normal trace_printk() and friends allocates special buffers
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c
index 57b67b1..66082a9 100644
--- a/kernel/trace/trace_clock.c
+++ b/kernel/trace/trace_clock.c
@@ -124,7 +124,7 @@ u64 notrace trace_clock_global(void)
 	return now;
 }
 
-static atomic64_t trace_counter;
+static atomic64_unchecked_t trace_counter;
 
 /*
  * trace_clock_counter(): simply an atomic counter.
@@ -133,5 +133,5 @@ static atomic64_t trace_counter;
  */
 u64 notrace trace_clock_counter(void)
 {
-	return atomic64_add_return(1, &trace_counter);
+	return atomic64_inc_return_unchecked(&trace_counter);
 }
diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
index 2de5362..c4c7003 100644
--- a/kernel/trace/trace_events.c
+++ b/kernel/trace/trace_events.c
@@ -1722,7 +1722,6 @@ __trace_early_add_new_event(struct ftrace_event_call *call,
 	return 0;
 }
 
-struct ftrace_module_file_ops;
 static void __add_event_to_tracers(struct ftrace_event_call *call);
 
 /* Add an additional event_call dynamically */
diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
index 0abd9b8..6a663a2 100644
--- a/kernel/trace/trace_mmiotrace.c
+++ b/kernel/trace/trace_mmiotrace.c
@@ -24,7 +24,7 @@ struct header_iter {
 static struct trace_array *mmio_trace_array;
 static bool overrun_detected;
 static unsigned long prev_overruns;
-static atomic_t dropped_count;
+static atomic_unchecked_t dropped_count;
 
 static void mmio_reset_data(struct trace_array *tr)
 {
@@ -127,7 +127,7 @@ static void mmio_close(struct trace_iterator *iter)
 
 static unsigned long count_overruns(struct trace_iterator *iter)
 {
-	unsigned long cnt = atomic_xchg(&dropped_count, 0);
+	unsigned long cnt = atomic_xchg_unchecked(&dropped_count, 0);
 	unsigned long over = ring_buffer_overruns(iter->trace_buffer->buffer);
 
 	if (over > prev_overruns)
@@ -317,7 +317,7 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
 	event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_RW,
 					  sizeof(*entry), 0, pc);
 	if (!event) {
-		atomic_inc(&dropped_count);
+		atomic_inc_unchecked(&dropped_count);
 		return;
 	}
 	entry	= ring_buffer_event_data(event);
@@ -347,7 +347,7 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
 	event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_MAP,
 					  sizeof(*entry), 0, pc);
 	if (!event) {
-		atomic_inc(&dropped_count);
+		atomic_inc_unchecked(&dropped_count);
 		return;
 	}
 	entry	= ring_buffer_event_data(event);
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index f3dad80..d291d61 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -322,7 +322,7 @@ int trace_seq_path(struct trace_seq *s, const struct path *path)
 
 	p = d_path(path, s->buffer + s->len, PAGE_SIZE - s->len);
 	if (!IS_ERR(p)) {
-		p = mangle_path(s->buffer + s->len, p, "\n");
+		p = mangle_path(s->buffer + s->len, p, "\n\\");
 		if (p) {
 			s->len = p - s->buffer;
 			return 1;
@@ -980,14 +980,16 @@ int register_ftrace_event(struct trace_event *event)
 			goto out;
 	}
 
+	pax_open_kernel();
 	if (event->funcs->trace == NULL)
-		event->funcs->trace = trace_nop_print;
+		*(void **)&event->funcs->trace = trace_nop_print;
 	if (event->funcs->raw == NULL)
-		event->funcs->raw = trace_nop_print;
+		*(void **)&event->funcs->raw = trace_nop_print;
 	if (event->funcs->hex == NULL)
-		event->funcs->hex = trace_nop_print;
+		*(void **)&event->funcs->hex = trace_nop_print;
 	if (event->funcs->binary == NULL)
-		event->funcs->binary = trace_nop_print;
+		*(void **)&event->funcs->binary = trace_nop_print;
+	pax_close_kernel();
 
 	key = event->type & (EVENT_HASHSIZE - 1);
 
diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
index 8a4e5cb..64f270d 100644
--- a/kernel/trace/trace_stack.c
+++ b/kernel/trace/trace_stack.c
@@ -91,7 +91,7 @@ check_stack(unsigned long ip, unsigned long *stack)
 		return;
 
 	/* we do not handle interrupt stacks yet */
-	if (!object_is_on_stack(stack))
+	if (!object_starts_on_stack(stack))
 		return;
 
 	local_irq_save(flags);
diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
index fcc0256..aee880f 100644
--- a/kernel/user_namespace.c
+++ b/kernel/user_namespace.c
@@ -82,6 +82,21 @@ int create_user_ns(struct cred *new)
 	    !kgid_has_mapping(parent_ns, group))
 		return -EPERM;
 
+#ifdef CONFIG_GRKERNSEC
+	/*
+	 * This doesn't really inspire confidence:
+	 * http://marc.info/?l=linux-kernel&m=135543612731939&w=2
+	 * http://marc.info/?l=linux-kernel&m=135545831607095&w=2
+	 * Increases kernel attack surface in areas developers
+	 * previously cared little about ("low importance due
+	 * to requiring "root" capability")
+	 * To be removed when this code receives *proper* review
+	 */
+	if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SETUID) ||
+			!capable(CAP_SETGID))
+		return -EPERM;
+#endif
+
 	ns = kmem_cache_zalloc(user_ns_cachep, GFP_KERNEL);
 	if (!ns)
 		return -ENOMEM;
@@ -872,7 +887,7 @@ static int userns_install(struct nsproxy *nsproxy, void *ns)
 	if (atomic_read(&current->mm->mm_users) > 1)
 		return -EINVAL;
 
-	if (current->fs->users != 1)
+	if (atomic_read(&current->fs->users) != 1)
 		return -EINVAL;
 
 	if (!ns_capable(user_ns, CAP_SYS_ADMIN))
diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index c8eac43..4b5f08f 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -47,7 +47,7 @@ static void put_uts(struct ctl_table *table, int write, void *which)
 static int proc_do_uts_string(struct ctl_table *table, int write,
 		  void __user *buffer, size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table uts_table;
+	ctl_table_no_const uts_table;
 	int r;
 	memcpy(&uts_table, table, sizeof(uts_table));
 	uts_table.data = get_uts(table, write);
diff --git a/kernel/watchdog.c b/kernel/watchdog.c
index c3319bd..67efc3c 100644
--- a/kernel/watchdog.c
+++ b/kernel/watchdog.c
@@ -518,7 +518,7 @@ static int watchdog_nmi_enable(unsigned int cpu) { return 0; }
 static void watchdog_nmi_disable(unsigned int cpu) { return; }
 #endif /* CONFIG_HARDLOCKUP_DETECTOR */
 
-static struct smp_hotplug_thread watchdog_threads = {
+static struct smp_hotplug_thread watchdog_threads __read_only = {
 	.store			= &softlockup_watchdog,
 	.thread_should_run	= watchdog_should_run,
 	.thread_fn		= watchdog,
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 35974ac..43c9e87 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -4576,7 +4576,7 @@ static void rebind_workers(struct worker_pool *pool)
 		WARN_ON_ONCE(!(worker_flags & WORKER_UNBOUND));
 		worker_flags |= WORKER_REBOUND;
 		worker_flags &= ~WORKER_UNBOUND;
-		ACCESS_ONCE(worker->flags) = worker_flags;
+		ACCESS_ONCE_RW(worker->flags) = worker_flags;
 	}
 
 	spin_unlock_irq(&pool->lock);
diff --git a/lib/Kconfig b/lib/Kconfig
index 334f772..74b8ec3 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -51,6 +51,9 @@ config PERCPU_RWSEM
 config ARCH_USE_CMPXCHG_LOCKREF
 	bool
 
+config ARCH_HAS_FAST_MULTIPLIER
+	bool
+
 config CRC_CCITT
 	tristate "CRC-CCITT functions"
 	help
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 7a638aa..20db901 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -858,7 +858,7 @@ config DEBUG_MUTEXES
 
 config DEBUG_WW_MUTEX_SLOWPATH
 	bool "Wait/wound mutex debugging: Slowpath testing"
-	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
+	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
 	select DEBUG_LOCK_ALLOC
 	select DEBUG_SPINLOCK
 	select DEBUG_MUTEXES
@@ -871,7 +871,7 @@ config DEBUG_WW_MUTEX_SLOWPATH
 
 config DEBUG_LOCK_ALLOC
 	bool "Lock debugging: detect incorrect freeing of live locks"
-	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
+	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
 	select DEBUG_SPINLOCK
 	select DEBUG_MUTEXES
 	select LOCKDEP
@@ -885,7 +885,7 @@ config DEBUG_LOCK_ALLOC
 
 config PROVE_LOCKING
 	bool "Lock debugging: prove locking correctness"
-	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
+	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
 	select LOCKDEP
 	select DEBUG_SPINLOCK
 	select DEBUG_MUTEXES
@@ -936,7 +936,7 @@ config LOCKDEP
 
 config LOCK_STAT
 	bool "Lock usage statistics"
-	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
+	depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
 	select LOCKDEP
 	select DEBUG_SPINLOCK
 	select DEBUG_MUTEXES
@@ -1418,6 +1418,7 @@ config LATENCYTOP
 	depends on DEBUG_KERNEL
 	depends on STACKTRACE_SUPPORT
 	depends on PROC_FS
+	depends on !GRKERNSEC_HIDESYM
 	select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC
 	select KALLSYMS
 	select KALLSYMS_ALL
@@ -1434,7 +1435,7 @@ config ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
 config DEBUG_STRICT_USER_COPY_CHECKS
 	bool "Strict user copy size checks"
 	depends on ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
-	depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING
+	depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING && !PAX_SIZE_OVERFLOW
 	help
 	  Enabling this option turns a certain set of sanity checks for user
 	  copy operations into compile time failures.
@@ -1554,7 +1555,7 @@ endmenu # runtime tests
 
 config PROVIDE_OHCI1394_DMA_INIT
 	bool "Remote debugging over FireWire early on boot"
-	depends on PCI && X86
+	depends on PCI && X86 && !GRKERNSEC
 	help
 	  If you want to debug problems which hang or crash the kernel early
 	  on boot and the crashing machine has a FireWire port, you can use
diff --git a/lib/Makefile b/lib/Makefile
index ba967a1..2cc869a 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -33,7 +33,6 @@ obj-y += kstrtox.o
 obj-$(CONFIG_TEST_KSTRTOX) += test-kstrtox.o
 obj-$(CONFIG_TEST_MODULE) += test_module.o
 obj-$(CONFIG_TEST_USER_COPY) += test_user_copy.o
-obj-$(CONFIG_TEST_BPF) += test_bpf.o
 
 ifeq ($(CONFIG_DEBUG_KOBJECT),y)
 CFLAGS_kobject.o += -DDEBUG
@@ -54,7 +53,7 @@ obj-$(CONFIG_BTREE) += btree.o
 obj-$(CONFIG_INTERVAL_TREE) += interval_tree.o
 obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
-obj-$(CONFIG_DEBUG_LIST) += list_debug.o
+obj-y += list_debug.o
 obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
 
 ifneq ($(CONFIG_HAVE_DEC_LOCK),y)
diff --git a/lib/average.c b/lib/average.c
index 114d1be..ab0350c 100644
--- a/lib/average.c
+++ b/lib/average.c
@@ -55,7 +55,7 @@ struct ewma *ewma_add(struct ewma *avg, unsigned long val)
 {
 	unsigned long internal = ACCESS_ONCE(avg->internal);
 
-	ACCESS_ONCE(avg->internal) = internal ?
+	ACCESS_ONCE_RW(avg->internal) = internal ?
 		(((internal << avg->weight) - internal) +
 			(val << avg->factor)) >> avg->weight :
 		(val << avg->factor);
diff --git a/lib/bitmap.c b/lib/bitmap.c
index 06f7e4f..f3cf2b0 100644
--- a/lib/bitmap.c
+++ b/lib/bitmap.c
@@ -422,7 +422,7 @@ int __bitmap_parse(const char *buf, unsigned int buflen,
 {
 	int c, old_c, totaldigits, ndigits, nchunks, nbits;
 	u32 chunk;
-	const char __user __force *ubuf = (const char __user __force *)buf;
+	const char __user *ubuf = (const char __force_user *)buf;
 
 	bitmap_zero(maskp, nmaskbits);
 
@@ -507,7 +507,7 @@ int bitmap_parse_user(const char __user *ubuf,
 {
 	if (!access_ok(VERIFY_READ, ubuf, ulen))
 		return -EFAULT;
-	return __bitmap_parse((const char __force *)ubuf,
+	return __bitmap_parse((const char __force_kernel *)ubuf,
 				ulen, 1, maskp, nmaskbits);
 
 }
@@ -598,7 +598,7 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
 {
 	unsigned a, b;
 	int c, old_c, totaldigits;
-	const char __user __force *ubuf = (const char __user __force *)buf;
+	const char __user *ubuf = (const char __force_user *)buf;
 	int exp_digit, in_range;
 
 	totaldigits = c = 0;
@@ -698,7 +698,7 @@ int bitmap_parselist_user(const char __user *ubuf,
 {
 	if (!access_ok(VERIFY_READ, ubuf, ulen))
 		return -EFAULT;
-	return __bitmap_parselist((const char __force *)ubuf,
+	return __bitmap_parselist((const char __force_kernel *)ubuf,
 					ulen, 1, maskp, nmaskbits);
 }
 EXPORT_SYMBOL(bitmap_parselist_user);
diff --git a/lib/bug.c b/lib/bug.c
index d1d7c78..b354235 100644
--- a/lib/bug.c
+++ b/lib/bug.c
@@ -137,6 +137,8 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs)
 		return BUG_TRAP_TYPE_NONE;
 
 	bug = find_bug(bugaddr);
+	if (!bug)
+		return BUG_TRAP_TYPE_NONE;
 
 	file = NULL;
 	line = 0;
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 547f7f9..a6d4ba0 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -289,7 +289,7 @@ static void debug_object_is_on_stack(void *addr, int onstack)
 	if (limit > 4)
 		return;
 
-	is_on_stack = object_is_on_stack(addr);
+	is_on_stack = object_starts_on_stack(addr);
 	if (is_on_stack == onstack)
 		return;
 
diff --git a/lib/div64.c b/lib/div64.c
index 4382ad7..08aa558 100644
--- a/lib/div64.c
+++ b/lib/div64.c
@@ -59,7 +59,7 @@ uint32_t __attribute__((weak)) __div64_32(uint64_t *n, uint32_t base)
 EXPORT_SYMBOL(__div64_32);
 
 #ifndef div_s64_rem
-s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder)
+s64 __intentional_overflow(-1) div_s64_rem(s64 dividend, s32 divisor, s32 *remainder)
 {
 	u64 quotient;
 
@@ -130,7 +130,7 @@ EXPORT_SYMBOL(div64_u64_rem);
  * 'http://www.hackersdelight.org/HDcode/newCode/divDouble.c.txt'
  */
 #ifndef div64_u64
-u64 div64_u64(u64 dividend, u64 divisor)
+u64 __intentional_overflow(-1) div64_u64(u64 dividend, u64 divisor)
 {
 	u32 high = divisor >> 32;
 	u64 quot;
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 98f2d7e..899da5c 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -971,7 +971,7 @@ static int dma_debug_device_change(struct notifier_block *nb, unsigned long acti
 
 void dma_debug_add_bus(struct bus_type *bus)
 {
-	struct notifier_block *nb;
+	notifier_block_no_const *nb;
 
 	if (global_disable)
 		return;
@@ -1148,7 +1148,7 @@ static void check_unmap(struct dma_debug_entry *ref)
 
 static void check_for_stack(struct device *dev, void *addr)
 {
-	if (object_is_on_stack(addr))
+	if (object_starts_on_stack(addr))
 		err_printk(dev, NULL, "DMA-API: device driver maps memory from"
 				"stack [addr=%p]\n", addr);
 }
diff --git a/lib/hash.c b/lib/hash.c
index fea973f..386626f 100644
--- a/lib/hash.c
+++ b/lib/hash.c
@@ -14,7 +14,7 @@
 #include <linux/hash.h>
 #include <linux/cache.h>
 
-static struct fast_hash_ops arch_hash_ops __read_mostly = {
+static struct fast_hash_ops arch_hash_ops __read_only = {
 	.hash  = jhash,
 	.hash2 = jhash2,
 };
diff --git a/lib/hweight.c b/lib/hweight.c
index b7d81ba..9a5c1f2 100644
--- a/lib/hweight.c
+++ b/lib/hweight.c
@@ -11,7 +11,7 @@
 
 unsigned int __sw_hweight32(unsigned int w)
 {
-#ifdef ARCH_HAS_FAST_MULTIPLIER
+#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
 	w -= (w >> 1) & 0x55555555;
 	w =  (w & 0x33333333) + ((w >> 2) & 0x33333333);
 	w =  (w + (w >> 4)) & 0x0f0f0f0f;
@@ -49,7 +49,7 @@ unsigned long __sw_hweight64(__u64 w)
 	return __sw_hweight32((unsigned int)(w >> 32)) +
 	       __sw_hweight32((unsigned int)w);
 #elif BITS_PER_LONG == 64
-#ifdef ARCH_HAS_FAST_MULTIPLIER
+#ifdef CONFIG_ARCH_HAS_FAST_MULTIPLIER
 	w -= (w >> 1) & 0x5555555555555555ul;
 	w =  (w & 0x3333333333333333ul) + ((w >> 2) & 0x3333333333333333ul);
 	w =  (w + (w >> 4)) & 0x0f0f0f0f0f0f0f0ful;
diff --git a/lib/inflate.c b/lib/inflate.c
index 013a761..c28f3fc 100644
--- a/lib/inflate.c
+++ b/lib/inflate.c
@@ -269,7 +269,7 @@ static void free(void *where)
 		malloc_ptr = free_mem_ptr;
 }
 #else
-#define malloc(a) kmalloc(a, GFP_KERNEL)
+#define malloc(a) kmalloc((a), GFP_KERNEL)
 #define free(a) kfree(a)
 #endif
 
diff --git a/lib/ioremap.c b/lib/ioremap.c
index 0c9216c..863bd89 100644
--- a/lib/ioremap.c
+++ b/lib/ioremap.c
@@ -38,7 +38,7 @@ static inline int ioremap_pmd_range(pud_t *pud, unsigned long addr,
 	unsigned long next;
 
 	phys_addr -= addr;
-	pmd = pmd_alloc(&init_mm, pud, addr);
+	pmd = pmd_alloc_kernel(&init_mm, pud, addr);
 	if (!pmd)
 		return -ENOMEM;
 	do {
@@ -56,7 +56,7 @@ static inline int ioremap_pud_range(pgd_t *pgd, unsigned long addr,
 	unsigned long next;
 
 	phys_addr -= addr;
-	pud = pud_alloc(&init_mm, pgd, addr);
+	pud = pud_alloc_kernel(&init_mm, pgd, addr);
 	if (!pud)
 		return -ENOMEM;
 	do {
diff --git a/lib/is_single_threaded.c b/lib/is_single_threaded.c
index bd2bea9..6b3c95e 100644
--- a/lib/is_single_threaded.c
+++ b/lib/is_single_threaded.c
@@ -22,6 +22,9 @@ bool current_is_single_threaded(void)
 	struct task_struct *p, *t;
 	bool ret;
 
+	if (!mm)
+		return true;
+
 	if (atomic_read(&task->signal->live) != 1)
 		return false;
 
diff --git a/lib/kobject.c b/lib/kobject.c
index 58751bb..93a1853 100644
--- a/lib/kobject.c
+++ b/lib/kobject.c
@@ -931,9 +931,9 @@ EXPORT_SYMBOL_GPL(kset_create_and_add);
 
 
 static DEFINE_SPINLOCK(kobj_ns_type_lock);
-static const struct kobj_ns_type_operations *kobj_ns_ops_tbl[KOBJ_NS_TYPES];
+static const struct kobj_ns_type_operations *kobj_ns_ops_tbl[KOBJ_NS_TYPES] __read_only;
 
-int kobj_ns_type_register(const struct kobj_ns_type_operations *ops)
+int __init kobj_ns_type_register(const struct kobj_ns_type_operations *ops)
 {
 	enum kobj_ns_type type = ops->type;
 	int error;
diff --git a/lib/list_debug.c b/lib/list_debug.c
index c24c2f7..f0296f4 100644
--- a/lib/list_debug.c
+++ b/lib/list_debug.c
@@ -11,7 +11,9 @@
 #include <linux/bug.h>
 #include <linux/kernel.h>
 #include <linux/rculist.h>
+#include <linux/mm.h>
 
+#ifdef CONFIG_DEBUG_LIST
 /*
  * Insert a new entry between two known consecutive entries.
  *
@@ -19,21 +21,40 @@
  * the prev/next entries already!
  */
 
+static bool __list_add_debug(struct list_head *new,
+			     struct list_head *prev,
+			     struct list_head *next)
+{
+	if (unlikely(next->prev != prev)) {
+		printk(KERN_ERR "list_add corruption. next->prev should be "
+			"prev (%p), but was %p. (next=%p).\n",
+			prev, next->prev, next);
+		BUG();
+		return false;
+	}
+	if (unlikely(prev->next != next)) {
+		printk(KERN_ERR "list_add corruption. prev->next should be "
+			"next (%p), but was %p. (prev=%p).\n",
+			next, prev->next, prev);
+		BUG();
+		return false;
+	}
+	if (unlikely(new == prev || new == next)) {
+		printk(KERN_ERR "list_add double add: new=%p, prev=%p, next=%p.\n",
+			new, prev, next);
+		BUG();
+		return false;
+	}
+	return true;
+}
+
 void __list_add(struct list_head *new,
-			      struct list_head *prev,
-			      struct list_head *next)
+		struct list_head *prev,
+		struct list_head *next)
 {
-	WARN(next->prev != prev,
-		"list_add corruption. next->prev should be "
-		"prev (%p), but was %p. (next=%p).\n",
-		prev, next->prev, next);
-	WARN(prev->next != next,
-		"list_add corruption. prev->next should be "
-		"next (%p), but was %p. (prev=%p).\n",
-		next, prev->next, prev);
-	WARN(new == prev || new == next,
-	     "list_add double add: new=%p, prev=%p, next=%p.\n",
-	     new, prev, next);
+	if (!__list_add_debug(new, prev, next))
+		return;
+
 	next->prev = new;
 	new->next = next;
 	new->prev = prev;
@@ -41,28 +62,46 @@ void __list_add(struct list_head *new,
 }
 EXPORT_SYMBOL(__list_add);
 
-void __list_del_entry(struct list_head *entry)
+static bool __list_del_entry_debug(struct list_head *entry)
 {
 	struct list_head *prev, *next;
 
 	prev = entry->prev;
 	next = entry->next;
 
-	if (WARN(next == LIST_POISON1,
-		"list_del corruption, %p->next is LIST_POISON1 (%p)\n",
-		entry, LIST_POISON1) ||
-	    WARN(prev == LIST_POISON2,
-		"list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
-		entry, LIST_POISON2) ||
-	    WARN(prev->next != entry,
-		"list_del corruption. prev->next should be %p, "
-		"but was %p\n", entry, prev->next) ||
-	    WARN(next->prev != entry,
-		"list_del corruption. next->prev should be %p, "
-		"but was %p\n", entry, next->prev))
+	if (unlikely(next == LIST_POISON1)) {
+		printk(KERN_ERR "list_del corruption, %p->next is LIST_POISON1 (%p)\n",
+			entry, LIST_POISON1);
+		BUG();
+		return false;
+	}
+	if (unlikely(prev == LIST_POISON2)) {
+		printk(KERN_ERR "list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
+			entry, LIST_POISON2);
+		BUG();
+		return false;
+	}
+	if (unlikely(entry->prev->next != entry)) {
+		printk(KERN_ERR "list_del corruption. prev->next should be %p, "
+			"but was %p\n", entry, prev->next);
+		BUG();
+		return false;
+	}
+	if (unlikely(entry->next->prev != entry)) {
+		printk(KERN_ERR "list_del corruption. next->prev should be %p, "
+			"but was %p\n", entry, next->prev);
+		BUG();
+		return false;
+	}
+	return true;
+}
+
+void __list_del_entry(struct list_head *entry)
+{
+	if (!__list_del_entry_debug(entry))
 		return;
 
-	__list_del(prev, next);
+	__list_del(entry->prev, entry->next);
 }
 EXPORT_SYMBOL(__list_del_entry);
 
@@ -86,15 +125,85 @@ EXPORT_SYMBOL(list_del);
 void __list_add_rcu(struct list_head *new,
 		    struct list_head *prev, struct list_head *next)
 {
-	WARN(next->prev != prev,
-		"list_add_rcu corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
-		prev, next->prev, next);
-	WARN(prev->next != next,
-		"list_add_rcu corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
-		next, prev->next, prev);
+	if (!__list_add_debug(new, prev, next))
+		return;
+
 	new->next = next;
 	new->prev = prev;
 	rcu_assign_pointer(list_next_rcu(prev), new);
 	next->prev = new;
 }
 EXPORT_SYMBOL(__list_add_rcu);
+#endif
+
+void __pax_list_add(struct list_head *new, struct list_head *prev, struct list_head *next)
+{
+#ifdef CONFIG_DEBUG_LIST
+	if (!__list_add_debug(new, prev, next))
+		return;
+#endif
+
+	pax_open_kernel();
+	next->prev = new;
+	new->next = next;
+	new->prev = prev;
+	prev->next = new;
+	pax_close_kernel();
+}
+EXPORT_SYMBOL(__pax_list_add);
+
+void pax_list_del(struct list_head *entry)
+{
+#ifdef CONFIG_DEBUG_LIST
+	if (!__list_del_entry_debug(entry))
+		return;
+#endif
+
+	pax_open_kernel();
+	__list_del(entry->prev, entry->next);
+	entry->next = LIST_POISON1;
+	entry->prev = LIST_POISON2;
+	pax_close_kernel();
+}
+EXPORT_SYMBOL(pax_list_del);
+
+void pax_list_del_init(struct list_head *entry)
+{
+	pax_open_kernel();
+	__list_del(entry->prev, entry->next);
+	INIT_LIST_HEAD(entry);
+	pax_close_kernel();
+}
+EXPORT_SYMBOL(pax_list_del_init);
+
+void __pax_list_add_rcu(struct list_head *new,
+			struct list_head *prev, struct list_head *next)
+{
+#ifdef CONFIG_DEBUG_LIST
+	if (!__list_add_debug(new, prev, next))
+		return;
+#endif
+
+	pax_open_kernel();
+	new->next = next;
+	new->prev = prev;
+	rcu_assign_pointer(list_next_rcu(prev), new);
+	next->prev = new;
+	pax_close_kernel();
+}
+EXPORT_SYMBOL(__pax_list_add_rcu);
+
+void pax_list_del_rcu(struct list_head *entry)
+{
+#ifdef CONFIG_DEBUG_LIST
+	if (!__list_del_entry_debug(entry))
+		return;
+#endif
+
+	pax_open_kernel();
+	__list_del(entry->prev, entry->next);
+	entry->next = LIST_POISON1;
+	entry->prev = LIST_POISON2;
+	pax_close_kernel();
+}
+EXPORT_SYMBOL(pax_list_del_rcu);
diff --git a/lib/lockref.c b/lib/lockref.c
index f07a40d..0a445a7 100644
--- a/lib/lockref.c
+++ b/lib/lockref.c
@@ -49,13 +49,13 @@
 void lockref_get(struct lockref *lockref)
 {
 	CMPXCHG_LOOP(
-		new.count++;
+		__lockref_inc(&new);
 	,
 		return;
 	);
 
 	spin_lock(&lockref->lock);
-	lockref->count++;
+	__lockref_inc(lockref);
 	spin_unlock(&lockref->lock);
 }
 EXPORT_SYMBOL(lockref_get);
@@ -70,7 +70,7 @@ int lockref_get_not_zero(struct lockref *lockref)
 	int retval;
 
 	CMPXCHG_LOOP(
-		new.count++;
+		__lockref_inc(&new);
 		if (!old.count)
 			return 0;
 	,
@@ -80,7 +80,7 @@ int lockref_get_not_zero(struct lockref *lockref)
 	spin_lock(&lockref->lock);
 	retval = 0;
 	if (lockref->count) {
-		lockref->count++;
+		__lockref_inc(lockref);
 		retval = 1;
 	}
 	spin_unlock(&lockref->lock);
@@ -97,7 +97,7 @@ EXPORT_SYMBOL(lockref_get_not_zero);
 int lockref_get_or_lock(struct lockref *lockref)
 {
 	CMPXCHG_LOOP(
-		new.count++;
+		__lockref_inc(&new);
 		if (!old.count)
 			break;
 	,
@@ -107,7 +107,7 @@ int lockref_get_or_lock(struct lockref *lockref)
 	spin_lock(&lockref->lock);
 	if (!lockref->count)
 		return 0;
-	lockref->count++;
+	__lockref_inc(lockref);
 	spin_unlock(&lockref->lock);
 	return 1;
 }
@@ -121,7 +121,7 @@ EXPORT_SYMBOL(lockref_get_or_lock);
 int lockref_put_or_lock(struct lockref *lockref)
 {
 	CMPXCHG_LOOP(
-		new.count--;
+		__lockref_dec(&new);
 		if (old.count <= 1)
 			break;
 	,
@@ -131,7 +131,7 @@ int lockref_put_or_lock(struct lockref *lockref)
 	spin_lock(&lockref->lock);
 	if (lockref->count <= 1)
 		return 0;
-	lockref->count--;
+	__lockref_dec(lockref);
 	spin_unlock(&lockref->lock);
 	return 1;
 }
@@ -158,7 +158,7 @@ int lockref_get_not_dead(struct lockref *lockref)
 	int retval;
 
 	CMPXCHG_LOOP(
-		new.count++;
+		__lockref_inc(&new);
 		if ((int)old.count < 0)
 			return 0;
 	,
@@ -168,7 +168,7 @@ int lockref_get_not_dead(struct lockref *lockref)
 	spin_lock(&lockref->lock);
 	retval = 0;
 	if ((int) lockref->count >= 0) {
-		lockref->count++;
+		__lockref_inc(lockref);
 		retval = 1;
 	}
 	spin_unlock(&lockref->lock);
diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
index 963b703..438bc51 100644
--- a/lib/percpu-refcount.c
+++ b/lib/percpu-refcount.c
@@ -29,7 +29,7 @@
  * can't hit 0 before we've added up all the percpu refs.
  */
 
-#define PCPU_COUNT_BIAS		(1U << 31)
+#define PCPU_COUNT_BIAS		(1U << 30)
 
 /**
  * percpu_ref_init - initialize a percpu refcount
diff --git a/lib/radix-tree.c b/lib/radix-tree.c
index 3291a8e..346a91e 100644
--- a/lib/radix-tree.c
+++ b/lib/radix-tree.c
@@ -67,7 +67,7 @@ struct radix_tree_preload {
 	int nr;
 	struct radix_tree_node *nodes[RADIX_TREE_PRELOAD_SIZE];
 };
-static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, };
+static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads);
 
 static inline void *ptr_to_indirect(void *ptr)
 {
diff --git a/lib/random32.c b/lib/random32.c
index fa5da61..35fe9af 100644
--- a/lib/random32.c
+++ b/lib/random32.c
@@ -42,7 +42,7 @@
 static void __init prandom_state_selftest(void);
 #endif
 
-static DEFINE_PER_CPU(struct rnd_state, net_rand_state);
+static DEFINE_PER_CPU(struct rnd_state, net_rand_state) __latent_entropy;
 
 /**
  *	prandom_u32_state - seeded pseudo-random number generator.
diff --git a/lib/rbtree.c b/lib/rbtree.c
index 65f4eff..2cfa167 100644
--- a/lib/rbtree.c
+++ b/lib/rbtree.c
@@ -380,7 +380,9 @@ static inline void dummy_copy(struct rb_node *old, struct rb_node *new) {}
 static inline void dummy_rotate(struct rb_node *old, struct rb_node *new) {}
 
 static const struct rb_augment_callbacks dummy_callbacks = {
-	dummy_propagate, dummy_copy, dummy_rotate
+	.propagate = dummy_propagate,
+	.copy = dummy_copy,
+	.rotate = dummy_rotate
 };
 
 void rb_insert_color(struct rb_node *node, struct rb_root *root)
diff --git a/lib/show_mem.c b/lib/show_mem.c
index 0922579..9d7adb9 100644
--- a/lib/show_mem.c
+++ b/lib/show_mem.c
@@ -44,6 +44,6 @@ void show_mem(unsigned int filter)
 		quicklist_total_size());
 #endif
 #ifdef CONFIG_MEMORY_FAILURE
-	printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
+	printk("%lu pages hwpoisoned\n", atomic_long_read_unchecked(&num_poisoned_pages));
 #endif
 }
diff --git a/lib/string.c b/lib/string.c
index 992bf30..f3c6ff5 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -807,9 +807,9 @@ void *memchr_inv(const void *start, int c, size_t bytes)
 		return check_bytes8(start, value, bytes);
 
 	value64 = value;
-#if defined(ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
+#if defined(CONFIG_ARCH_HAS_FAST_MULTIPLIER) && BITS_PER_LONG == 64
 	value64 *= 0x0101010101010101;
-#elif defined(ARCH_HAS_FAST_MULTIPLIER)
+#elif defined(CONFIG_ARCH_HAS_FAST_MULTIPLIER)
 	value64 *= 0x01010101;
 	value64 |= value64 << 32;
 #else
diff --git a/lib/strncpy_from_user.c b/lib/strncpy_from_user.c
index bb2b201..46abaf9 100644
--- a/lib/strncpy_from_user.c
+++ b/lib/strncpy_from_user.c
@@ -21,7 +21,7 @@
  */
 static inline long do_strncpy_from_user(char *dst, const char __user *src, long count, unsigned long max)
 {
-	const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
+	static const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
 	long res = 0;
 
 	/*
diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c
index a28df52..3d55877 100644
--- a/lib/strnlen_user.c
+++ b/lib/strnlen_user.c
@@ -26,7 +26,7 @@
  */
 static inline long do_strnlen_user(const char __user *src, unsigned long count, unsigned long max)
 {
-	const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
+	static const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
 	long align, res = 0;
 	unsigned long c;
 
diff --git a/lib/swiotlb.c b/lib/swiotlb.c
index 4abda07..b9d3765 100644
--- a/lib/swiotlb.c
+++ b/lib/swiotlb.c
@@ -682,7 +682,7 @@ EXPORT_SYMBOL(swiotlb_alloc_coherent);
 
 void
 swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
-		      dma_addr_t dev_addr)
+		      dma_addr_t dev_addr, struct dma_attrs *attrs)
 {
 	phys_addr_t paddr = dma_to_phys(hwdev, dev_addr);
 
diff --git a/lib/test_bpf.c b/lib/test_bpf.c
deleted file mode 100644
index c579e0f..0000000
--- a/lib/test_bpf.c
+++ /dev/null
@@ -1,1929 +0,0 @@
-/*
- * Testsuite for BPF interpreter and BPF JIT compiler
- *
- * Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/filter.h>
-#include <linux/skbuff.h>
-#include <linux/netdevice.h>
-#include <linux/if_vlan.h>
-
-/* General test specific settings */
-#define MAX_SUBTESTS	3
-#define MAX_TESTRUNS	10000
-#define MAX_DATA	128
-#define MAX_INSNS	512
-#define MAX_K		0xffffFFFF
-
-/* Few constants used to init test 'skb' */
-#define SKB_TYPE	3
-#define SKB_MARK	0x1234aaaa
-#define SKB_HASH	0x1234aaab
-#define SKB_QUEUE_MAP	123
-#define SKB_VLAN_TCI	0xffff
-#define SKB_DEV_IFINDEX	577
-#define SKB_DEV_TYPE	588
-
-/* Redefine REGs to make tests less verbose */
-#define R0		BPF_REG_0
-#define R1		BPF_REG_1
-#define R2		BPF_REG_2
-#define R3		BPF_REG_3
-#define R4		BPF_REG_4
-#define R5		BPF_REG_5
-#define R6		BPF_REG_6
-#define R7		BPF_REG_7
-#define R8		BPF_REG_8
-#define R9		BPF_REG_9
-#define R10		BPF_REG_10
-
-/* Flags that can be passed to test cases */
-#define FLAG_NO_DATA		BIT(0)
-#define FLAG_EXPECTED_FAIL	BIT(1)
-
-enum {
-	CLASSIC  = BIT(6),	/* Old BPF instructions only. */
-	INTERNAL = BIT(7),	/* Extended instruction set.  */
-};
-
-#define TEST_TYPE_MASK		(CLASSIC | INTERNAL)
-
-struct bpf_test {
-	const char *descr;
-	union {
-		struct sock_filter insns[MAX_INSNS];
-		struct sock_filter_int insns_int[MAX_INSNS];
-	} u;
-	__u8 aux;
-	__u8 data[MAX_DATA];
-	struct {
-		int data_size;
-		__u32 result;
-	} test[MAX_SUBTESTS];
-};
-
-static struct bpf_test tests[] = {
-	{
-		"TAX",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_ALU | BPF_NEG, 0), /* A == -3 */
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_LEN, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0), /* X == len - 3 */
-			BPF_STMT(BPF_LD | BPF_B | BPF_IND, 1),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ 10, 20, 30, 40, 50 },
-		{ { 2, 10 }, { 3, 20 }, { 4, 30 } },
-	},
-	{
-		"TXA",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0) /* A == len * 2 */
-		},
-		CLASSIC,
-		{ 10, 20, 30, 40, 50 },
-		{ { 1, 2 }, { 3, 6 }, { 4, 8 } },
-	},
-	{
-		"ADD_SUB_MUL_K",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 1),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 2),
-			BPF_STMT(BPF_LDX | BPF_IMM, 3),
-			BPF_STMT(BPF_ALU | BPF_SUB | BPF_X, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 0xffffffff),
-			BPF_STMT(BPF_ALU | BPF_MUL | BPF_K, 3),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC | FLAG_NO_DATA,
-		{ },
-		{ { 0, 0xfffffffd } }
-	},
-	{
-		"DIV_KX",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 8),
-			BPF_STMT(BPF_ALU | BPF_DIV | BPF_K, 2),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_IMM, 0xffffffff),
-			BPF_STMT(BPF_ALU | BPF_DIV | BPF_X, 0),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_IMM, 0xffffffff),
-			BPF_STMT(BPF_ALU | BPF_DIV | BPF_K, 0x70000000),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC | FLAG_NO_DATA,
-		{ },
-		{ { 0, 0x40000001 } }
-	},
-	{
-		"AND_OR_LSH_K",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 0xff),
-			BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xf0),
-			BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 27),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_IMM, 0xf),
-			BPF_STMT(BPF_ALU | BPF_OR | BPF_K, 0xf0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC | FLAG_NO_DATA,
-		{ },
-		{ { 0, 0x800000ff }, { 1, 0x800000ff } },
-	},
-	{
-		"LD_IMM_0",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 0), /* ld #0 */
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 0),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 1 } },
-	},
-	{
-		"LD_IND",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_IND, MAX_K),
-			BPF_STMT(BPF_RET | BPF_K, 1)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 0 }, { 10, 0 }, { 60, 0 } },
-	},
-	{
-		"LD_ABS",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS, 1000),
-			BPF_STMT(BPF_RET | BPF_K, 1)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 0 }, { 10, 0 }, { 60, 0 } },
-	},
-	{
-		"LD_ABS_LL",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, SKF_LL_OFF),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, SKF_LL_OFF + 1),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ 1, 2, 3 },
-		{ { 1, 0 }, { 2, 3 } },
-	},
-	{
-		"LD_IND_LL",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, SKF_LL_OFF - 1),
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ 1, 2, 3, 0xff },
-		{ { 1, 1 }, { 3, 3 }, { 4, 0xff } },
-	},
-	{
-		"LD_ABS_NET",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, SKF_NET_OFF),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, SKF_NET_OFF + 1),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3 },
-		{ { 15, 0 }, { 16, 3 } },
-	},
-	{
-		"LD_IND_NET",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, SKF_NET_OFF - 15),
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_IND, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3 },
-		{ { 14, 0 }, { 15, 1 }, { 17, 3 } },
-	},
-	{
-		"LD_PKTTYPE",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PKTTYPE),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, SKB_TYPE, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PKTTYPE),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, SKB_TYPE, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PKTTYPE),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, SKB_TYPE, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 3 }, { 10, 3 } },
-	},
-	{
-		"LD_MARK",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_MARK),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, SKB_MARK}, { 10, SKB_MARK} },
-	},
-	{
-		"LD_RXHASH",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_RXHASH),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, SKB_HASH}, { 10, SKB_HASH} },
-	},
-	{
-		"LD_QUEUE",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_QUEUE),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, SKB_QUEUE_MAP }, { 10, SKB_QUEUE_MAP } },
-	},
-	{
-		"LD_PROTOCOL",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 1),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 20, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 0),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PROTOCOL),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 30, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 0),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ 10, 20, 30 },
-		{ { 10, ETH_P_IP }, { 100, ETH_P_IP } },
-	},
-	{
-		"LD_VLAN_TAG",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_VLAN_TAG),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{
-			{ 1, SKB_VLAN_TCI & ~VLAN_TAG_PRESENT },
-			{ 10, SKB_VLAN_TCI & ~VLAN_TAG_PRESENT }
-		},
-	},
-	{
-		"LD_VLAN_TAG_PRESENT",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_VLAN_TAG_PRESENT),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{
-			{ 1, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) },
-			{ 10, !!(SKB_VLAN_TCI & VLAN_TAG_PRESENT) }
-		},
-	},
-	{
-		"LD_IFINDEX",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_IFINDEX),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, SKB_DEV_IFINDEX }, { 10, SKB_DEV_IFINDEX } },
-	},
-	{
-		"LD_HATYPE",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_HATYPE),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, SKB_DEV_TYPE }, { 10, SKB_DEV_TYPE } },
-	},
-	{
-		"LD_CPU",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_CPU),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_CPU),
-			BPF_STMT(BPF_ALU | BPF_SUB | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 0 }, { 10, 0 } },
-	},
-	{
-		"LD_NLATTR",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_IMM, 2),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_LDX | BPF_IMM, 3),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-#ifdef __BIG_ENDIAN
-		{ 0xff, 0xff, 0, 4, 0, 2, 0, 4, 0, 3 },
-#else
-		{ 0xff, 0xff, 4, 0, 2, 0, 4, 0, 3, 0 },
-#endif
-		{ { 4, 0 }, { 20, 6 } },
-	},
-	{
-		"LD_NLATTR_NEST",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LDX | BPF_IMM, 3),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_NLATTR_NEST),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-#ifdef __BIG_ENDIAN
-		{ 0xff, 0xff, 0, 12, 0, 1, 0, 4, 0, 2, 0, 4, 0, 3 },
-#else
-		{ 0xff, 0xff, 12, 0, 1, 0, 4, 0, 2, 0, 4, 0, 3, 0 },
-#endif
-		{ { 4, 0 }, { 20, 10 } },
-	},
-	{
-		"LD_PAYLOAD_OFF",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PAY_OFFSET),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PAY_OFFSET),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PAY_OFFSET),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PAY_OFFSET),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_PAY_OFFSET),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		/* 00:00:00:00:00:00 > 00:00:00:00:00:00, ethtype IPv4 (0x0800),
-		 * length 98: 127.0.0.1 > 127.0.0.1: ICMP echo request,
-		 * id 9737, seq 1, length 64
-		 */
-		{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-		  0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
-		  0x08, 0x00,
-		  0x45, 0x00, 0x00, 0x54, 0xac, 0x8b, 0x40, 0x00, 0x40,
-		  0x01, 0x90, 0x1b, 0x7f, 0x00, 0x00, 0x01 },
-		{ { 30, 0 }, { 100, 42 } },
-	},
-	{
-		"LD_ANC_XOR",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 10),
-			BPF_STMT(BPF_LDX | BPF_IMM, 300),
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_ALU_XOR_X),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 4, 10 ^ 300 }, { 20, 10 ^ 300 } },
-	},
-	{
-		"SPILL_FILL",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_LD | BPF_IMM, 2),
-			BPF_STMT(BPF_ALU | BPF_RSH, 1),
-			BPF_STMT(BPF_ALU | BPF_XOR | BPF_X, 0),
-			BPF_STMT(BPF_ST, 1), /* M1 = 1 ^ len */
-			BPF_STMT(BPF_ALU | BPF_XOR | BPF_K, 0x80000000),
-			BPF_STMT(BPF_ST, 2), /* M2 = 1 ^ len ^ 0x80000000 */
-			BPF_STMT(BPF_STX, 15), /* M3 = len */
-			BPF_STMT(BPF_LDX | BPF_MEM, 1),
-			BPF_STMT(BPF_LD | BPF_MEM, 2),
-			BPF_STMT(BPF_ALU | BPF_XOR | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 15),
-			BPF_STMT(BPF_ALU | BPF_XOR | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 0x80000001 }, { 2, 0x80000002 }, { 60, 0x80000000 ^ 60 } }
-	},
-	{
-		"JEQ",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, 0, 1),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-			BPF_STMT(BPF_RET | BPF_K, MAX_K)
-		},
-		CLASSIC,
-		{ 3, 3, 3, 3, 3 },
-		{ { 1, 0 }, { 3, 1 }, { 4, MAX_K } },
-	},
-	{
-		"JGT",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 2),
-			BPF_JUMP(BPF_JMP | BPF_JGT | BPF_X, 0, 0, 1),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-			BPF_STMT(BPF_RET | BPF_K, MAX_K)
-		},
-		CLASSIC,
-		{ 4, 4, 4, 3, 3 },
-		{ { 2, 0 }, { 3, 1 }, { 4, MAX_K } },
-	},
-	{
-		"JGE",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_LD | BPF_B | BPF_IND, MAX_K),
-			BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, 1, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 10),
-			BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, 2, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 20),
-			BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, 3, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 30),
-			BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, 4, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 40),
-			BPF_STMT(BPF_RET | BPF_K, MAX_K)
-		},
-		CLASSIC,
-		{ 1, 2, 3, 4, 5 },
-		{ { 1, 20 }, { 3, 40 }, { 5, MAX_K } },
-	},
-	{
-		"JSET",
-		.u.insns = {
-			BPF_JUMP(BPF_JMP | BPF_JA, 0, 0, 0),
-			BPF_JUMP(BPF_JMP | BPF_JA, 1, 1, 1),
-			BPF_JUMP(BPF_JMP | BPF_JA, 0, 0, 0),
-			BPF_JUMP(BPF_JMP | BPF_JA, 0, 0, 0),
-			BPF_STMT(BPF_LDX | BPF_LEN, 0),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_SUB | BPF_K, 4),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_LD | BPF_W | BPF_IND, 0),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 1, 0, 1),
-			BPF_STMT(BPF_RET | BPF_K, 10),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0x80000000, 0, 1),
-			BPF_STMT(BPF_RET | BPF_K, 20),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0xffffff, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 30),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0xffffff, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 30),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0xffffff, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 30),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0xffffff, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 30),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0xffffff, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 30),
-			BPF_STMT(BPF_RET | BPF_K, MAX_K)
-		},
-		CLASSIC,
-		{ 0, 0xAA, 0x55, 1 },
-		{ { 4, 10 }, { 5, 20 }, { 6, MAX_K } },
-	},
-	{
-		"tcpdump port 22",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 12),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x86dd, 0, 8), /* IPv6 */
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 20),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x84, 2, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x6, 1, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x11, 0, 17),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 54),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 22, 14, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 56),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 22, 12, 13),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0800, 0, 12), /* IPv4 */
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 23),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x84, 2, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x6, 1, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x11, 0, 8),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 20),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0x1fff, 6, 0),
-			BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 14),
-			BPF_STMT(BPF_LD | BPF_H | BPF_IND, 14),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 22, 2, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_IND, 16),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 22, 0, 1),
-			BPF_STMT(BPF_RET | BPF_K, 0xffff),
-			BPF_STMT(BPF_RET | BPF_K, 0),
-		},
-		CLASSIC,
-		/* 3c:07:54:43:e5:76 > 10:bf:48:d6:43:d6, ethertype IPv4(0x0800)
-		 * length 114: 10.1.1.149.49700 > 10.1.2.10.22: Flags [P.],
-		 * seq 1305692979:1305693027, ack 3650467037, win 65535,
-		 * options [nop,nop,TS val 2502645400 ecr 3971138], length 48
-		 */
-		{ 0x10, 0xbf, 0x48, 0xd6, 0x43, 0xd6,
-		  0x3c, 0x07, 0x54, 0x43, 0xe5, 0x76,
-		  0x08, 0x00,
-		  0x45, 0x10, 0x00, 0x64, 0x75, 0xb5,
-		  0x40, 0x00, 0x40, 0x06, 0xad, 0x2e, /* IP header */
-		  0x0a, 0x01, 0x01, 0x95, /* ip src */
-		  0x0a, 0x01, 0x02, 0x0a, /* ip dst */
-		  0xc2, 0x24,
-		  0x00, 0x16 /* dst port */ },
-		{ { 10, 0 }, { 30, 0 }, { 100, 65535 } },
-	},
-	{
-		"tcpdump complex",
-		.u.insns = {
-			/* tcpdump -nei eth0 'tcp port 22 and (((ip[2:2] -
-			 * ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0) and
-			 * (len > 115 or len < 30000000000)' -d
-			 */
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 12),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x86dd, 30, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x800, 0, 29),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 23),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x6, 0, 27),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 20),
-			BPF_JUMP(BPF_JMP | BPF_JSET | BPF_K, 0x1fff, 25, 0),
-			BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 14),
-			BPF_STMT(BPF_LD | BPF_H | BPF_IND, 14),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 22, 2, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_IND, 16),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 22, 0, 20),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 16),
-			BPF_STMT(BPF_ST, 1),
-			BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 14),
-			BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xf),
-			BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 2),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0x5), /* libpcap emits K on TAX */
-			BPF_STMT(BPF_LD | BPF_MEM, 1),
-			BPF_STMT(BPF_ALU | BPF_SUB | BPF_X, 0),
-			BPF_STMT(BPF_ST, 5),
-			BPF_STMT(BPF_LDX | BPF_B | BPF_MSH, 14),
-			BPF_STMT(BPF_LD | BPF_B | BPF_IND, 26),
-			BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xf0),
-			BPF_STMT(BPF_ALU | BPF_RSH | BPF_K, 2),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0x9), /* libpcap emits K on TAX */
-			BPF_STMT(BPF_LD | BPF_MEM, 5),
-			BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, 4, 0),
-			BPF_STMT(BPF_LD | BPF_LEN, 0),
-			BPF_JUMP(BPF_JMP | BPF_JGT | BPF_K, 0x73, 1, 0),
-			BPF_JUMP(BPF_JMP | BPF_JGE | BPF_K, 0xfc23ac00, 1, 0),
-			BPF_STMT(BPF_RET | BPF_K, 0xffff),
-			BPF_STMT(BPF_RET | BPF_K, 0),
-		},
-		CLASSIC,
-		{ 0x10, 0xbf, 0x48, 0xd6, 0x43, 0xd6,
-		  0x3c, 0x07, 0x54, 0x43, 0xe5, 0x76,
-		  0x08, 0x00,
-		  0x45, 0x10, 0x00, 0x64, 0x75, 0xb5,
-		  0x40, 0x00, 0x40, 0x06, 0xad, 0x2e, /* IP header */
-		  0x0a, 0x01, 0x01, 0x95, /* ip src */
-		  0x0a, 0x01, 0x02, 0x0a, /* ip dst */
-		  0xc2, 0x24,
-		  0x00, 0x16 /* dst port */ },
-		{ { 10, 0 }, { 30, 0 }, { 100, 65535 } },
-	},
-	{
-		"RET_A",
-		.u.insns = {
-			/* check that unitialized X and A contain zeros */
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0)
-		},
-		CLASSIC,
-		{ },
-		{ {1, 0}, {2, 0} },
-	},
-	{
-		"INT: ADD trivial",
-		.u.insns_int = {
-			BPF_ALU64_IMM(BPF_MOV, R1, 1),
-			BPF_ALU64_IMM(BPF_ADD, R1, 2),
-			BPF_ALU64_IMM(BPF_MOV, R2, 3),
-			BPF_ALU64_REG(BPF_SUB, R1, R2),
-			BPF_ALU64_IMM(BPF_ADD, R1, -1),
-			BPF_ALU64_IMM(BPF_MUL, R1, 3),
-			BPF_ALU64_REG(BPF_MOV, R0, R1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 0xfffffffd } }
-	},
-	{
-		"INT: MUL_X",
-		.u.insns_int = {
-			BPF_ALU64_IMM(BPF_MOV, R0, -1),
-			BPF_ALU64_IMM(BPF_MOV, R1, -1),
-			BPF_ALU64_IMM(BPF_MOV, R2, 3),
-			BPF_ALU64_REG(BPF_MUL, R1, R2),
-			BPF_JMP_IMM(BPF_JEQ, R1, 0xfffffffd, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_MOV, R0, 1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 1 } }
-	},
-	{
-		"INT: MUL_X2",
-		.u.insns_int = {
-			BPF_ALU32_IMM(BPF_MOV, R0, -1),
-			BPF_ALU32_IMM(BPF_MOV, R1, -1),
-			BPF_ALU32_IMM(BPF_MOV, R2, 3),
-			BPF_ALU64_REG(BPF_MUL, R1, R2),
-			BPF_ALU64_IMM(BPF_RSH, R1, 8),
-			BPF_JMP_IMM(BPF_JEQ, R1, 0x2ffffff, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_IMM(BPF_MOV, R0, 1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 1 } }
-	},
-	{
-		"INT: MUL32_X",
-		.u.insns_int = {
-			BPF_ALU32_IMM(BPF_MOV, R0, -1),
-			BPF_ALU64_IMM(BPF_MOV, R1, -1),
-			BPF_ALU32_IMM(BPF_MOV, R2, 3),
-			BPF_ALU32_REG(BPF_MUL, R1, R2),
-			BPF_ALU64_IMM(BPF_RSH, R1, 8),
-			BPF_JMP_IMM(BPF_JEQ, R1, 0xffffff, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_IMM(BPF_MOV, R0, 1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 1 } }
-	},
-	{
-		/* Have to test all register combinations, since
-		 * JITing of different registers will produce
-		 * different asm code.
-		 */
-		"INT: ADD 64-bit",
-		.u.insns_int = {
-			BPF_ALU64_IMM(BPF_MOV, R0, 0),
-			BPF_ALU64_IMM(BPF_MOV, R1, 1),
-			BPF_ALU64_IMM(BPF_MOV, R2, 2),
-			BPF_ALU64_IMM(BPF_MOV, R3, 3),
-			BPF_ALU64_IMM(BPF_MOV, R4, 4),
-			BPF_ALU64_IMM(BPF_MOV, R5, 5),
-			BPF_ALU64_IMM(BPF_MOV, R6, 6),
-			BPF_ALU64_IMM(BPF_MOV, R7, 7),
-			BPF_ALU64_IMM(BPF_MOV, R8, 8),
-			BPF_ALU64_IMM(BPF_MOV, R9, 9),
-			BPF_ALU64_IMM(BPF_ADD, R0, 20),
-			BPF_ALU64_IMM(BPF_ADD, R1, 20),
-			BPF_ALU64_IMM(BPF_ADD, R2, 20),
-			BPF_ALU64_IMM(BPF_ADD, R3, 20),
-			BPF_ALU64_IMM(BPF_ADD, R4, 20),
-			BPF_ALU64_IMM(BPF_ADD, R5, 20),
-			BPF_ALU64_IMM(BPF_ADD, R6, 20),
-			BPF_ALU64_IMM(BPF_ADD, R7, 20),
-			BPF_ALU64_IMM(BPF_ADD, R8, 20),
-			BPF_ALU64_IMM(BPF_ADD, R9, 20),
-			BPF_ALU64_IMM(BPF_SUB, R0, 10),
-			BPF_ALU64_IMM(BPF_SUB, R1, 10),
-			BPF_ALU64_IMM(BPF_SUB, R2, 10),
-			BPF_ALU64_IMM(BPF_SUB, R3, 10),
-			BPF_ALU64_IMM(BPF_SUB, R4, 10),
-			BPF_ALU64_IMM(BPF_SUB, R5, 10),
-			BPF_ALU64_IMM(BPF_SUB, R6, 10),
-			BPF_ALU64_IMM(BPF_SUB, R7, 10),
-			BPF_ALU64_IMM(BPF_SUB, R8, 10),
-			BPF_ALU64_IMM(BPF_SUB, R9, 10),
-			BPF_ALU64_REG(BPF_ADD, R0, R0),
-			BPF_ALU64_REG(BPF_ADD, R0, R1),
-			BPF_ALU64_REG(BPF_ADD, R0, R2),
-			BPF_ALU64_REG(BPF_ADD, R0, R3),
-			BPF_ALU64_REG(BPF_ADD, R0, R4),
-			BPF_ALU64_REG(BPF_ADD, R0, R5),
-			BPF_ALU64_REG(BPF_ADD, R0, R6),
-			BPF_ALU64_REG(BPF_ADD, R0, R7),
-			BPF_ALU64_REG(BPF_ADD, R0, R8),
-			BPF_ALU64_REG(BPF_ADD, R0, R9), /* R0 == 155 */
-			BPF_JMP_IMM(BPF_JEQ, R0, 155, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R1, R0),
-			BPF_ALU64_REG(BPF_ADD, R1, R1),
-			BPF_ALU64_REG(BPF_ADD, R1, R2),
-			BPF_ALU64_REG(BPF_ADD, R1, R3),
-			BPF_ALU64_REG(BPF_ADD, R1, R4),
-			BPF_ALU64_REG(BPF_ADD, R1, R5),
-			BPF_ALU64_REG(BPF_ADD, R1, R6),
-			BPF_ALU64_REG(BPF_ADD, R1, R7),
-			BPF_ALU64_REG(BPF_ADD, R1, R8),
-			BPF_ALU64_REG(BPF_ADD, R1, R9), /* R1 == 456 */
-			BPF_JMP_IMM(BPF_JEQ, R1, 456, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R2, R0),
-			BPF_ALU64_REG(BPF_ADD, R2, R1),
-			BPF_ALU64_REG(BPF_ADD, R2, R2),
-			BPF_ALU64_REG(BPF_ADD, R2, R3),
-			BPF_ALU64_REG(BPF_ADD, R2, R4),
-			BPF_ALU64_REG(BPF_ADD, R2, R5),
-			BPF_ALU64_REG(BPF_ADD, R2, R6),
-			BPF_ALU64_REG(BPF_ADD, R2, R7),
-			BPF_ALU64_REG(BPF_ADD, R2, R8),
-			BPF_ALU64_REG(BPF_ADD, R2, R9), /* R2 == 1358 */
-			BPF_JMP_IMM(BPF_JEQ, R2, 1358, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R3, R0),
-			BPF_ALU64_REG(BPF_ADD, R3, R1),
-			BPF_ALU64_REG(BPF_ADD, R3, R2),
-			BPF_ALU64_REG(BPF_ADD, R3, R3),
-			BPF_ALU64_REG(BPF_ADD, R3, R4),
-			BPF_ALU64_REG(BPF_ADD, R3, R5),
-			BPF_ALU64_REG(BPF_ADD, R3, R6),
-			BPF_ALU64_REG(BPF_ADD, R3, R7),
-			BPF_ALU64_REG(BPF_ADD, R3, R8),
-			BPF_ALU64_REG(BPF_ADD, R3, R9), /* R3 == 4063 */
-			BPF_JMP_IMM(BPF_JEQ, R3, 4063, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R4, R0),
-			BPF_ALU64_REG(BPF_ADD, R4, R1),
-			BPF_ALU64_REG(BPF_ADD, R4, R2),
-			BPF_ALU64_REG(BPF_ADD, R4, R3),
-			BPF_ALU64_REG(BPF_ADD, R4, R4),
-			BPF_ALU64_REG(BPF_ADD, R4, R5),
-			BPF_ALU64_REG(BPF_ADD, R4, R6),
-			BPF_ALU64_REG(BPF_ADD, R4, R7),
-			BPF_ALU64_REG(BPF_ADD, R4, R8),
-			BPF_ALU64_REG(BPF_ADD, R4, R9), /* R4 == 12177 */
-			BPF_JMP_IMM(BPF_JEQ, R4, 12177, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R5, R0),
-			BPF_ALU64_REG(BPF_ADD, R5, R1),
-			BPF_ALU64_REG(BPF_ADD, R5, R2),
-			BPF_ALU64_REG(BPF_ADD, R5, R3),
-			BPF_ALU64_REG(BPF_ADD, R5, R4),
-			BPF_ALU64_REG(BPF_ADD, R5, R5),
-			BPF_ALU64_REG(BPF_ADD, R5, R6),
-			BPF_ALU64_REG(BPF_ADD, R5, R7),
-			BPF_ALU64_REG(BPF_ADD, R5, R8),
-			BPF_ALU64_REG(BPF_ADD, R5, R9), /* R5 == 36518 */
-			BPF_JMP_IMM(BPF_JEQ, R5, 36518, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R6, R0),
-			BPF_ALU64_REG(BPF_ADD, R6, R1),
-			BPF_ALU64_REG(BPF_ADD, R6, R2),
-			BPF_ALU64_REG(BPF_ADD, R6, R3),
-			BPF_ALU64_REG(BPF_ADD, R6, R4),
-			BPF_ALU64_REG(BPF_ADD, R6, R5),
-			BPF_ALU64_REG(BPF_ADD, R6, R6),
-			BPF_ALU64_REG(BPF_ADD, R6, R7),
-			BPF_ALU64_REG(BPF_ADD, R6, R8),
-			BPF_ALU64_REG(BPF_ADD, R6, R9), /* R6 == 109540 */
-			BPF_JMP_IMM(BPF_JEQ, R6, 109540, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R7, R0),
-			BPF_ALU64_REG(BPF_ADD, R7, R1),
-			BPF_ALU64_REG(BPF_ADD, R7, R2),
-			BPF_ALU64_REG(BPF_ADD, R7, R3),
-			BPF_ALU64_REG(BPF_ADD, R7, R4),
-			BPF_ALU64_REG(BPF_ADD, R7, R5),
-			BPF_ALU64_REG(BPF_ADD, R7, R6),
-			BPF_ALU64_REG(BPF_ADD, R7, R7),
-			BPF_ALU64_REG(BPF_ADD, R7, R8),
-			BPF_ALU64_REG(BPF_ADD, R7, R9), /* R7 == 328605 */
-			BPF_JMP_IMM(BPF_JEQ, R7, 328605, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R8, R0),
-			BPF_ALU64_REG(BPF_ADD, R8, R1),
-			BPF_ALU64_REG(BPF_ADD, R8, R2),
-			BPF_ALU64_REG(BPF_ADD, R8, R3),
-			BPF_ALU64_REG(BPF_ADD, R8, R4),
-			BPF_ALU64_REG(BPF_ADD, R8, R5),
-			BPF_ALU64_REG(BPF_ADD, R8, R6),
-			BPF_ALU64_REG(BPF_ADD, R8, R7),
-			BPF_ALU64_REG(BPF_ADD, R8, R8),
-			BPF_ALU64_REG(BPF_ADD, R8, R9), /* R8 == 985799 */
-			BPF_JMP_IMM(BPF_JEQ, R8, 985799, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_ADD, R9, R0),
-			BPF_ALU64_REG(BPF_ADD, R9, R1),
-			BPF_ALU64_REG(BPF_ADD, R9, R2),
-			BPF_ALU64_REG(BPF_ADD, R9, R3),
-			BPF_ALU64_REG(BPF_ADD, R9, R4),
-			BPF_ALU64_REG(BPF_ADD, R9, R5),
-			BPF_ALU64_REG(BPF_ADD, R9, R6),
-			BPF_ALU64_REG(BPF_ADD, R9, R7),
-			BPF_ALU64_REG(BPF_ADD, R9, R8),
-			BPF_ALU64_REG(BPF_ADD, R9, R9), /* R9 == 2957380 */
-			BPF_ALU64_REG(BPF_MOV, R0, R9),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 2957380 } }
-	},
-	{
-		"INT: ADD 32-bit",
-		.u.insns_int = {
-			BPF_ALU32_IMM(BPF_MOV, R0, 20),
-			BPF_ALU32_IMM(BPF_MOV, R1, 1),
-			BPF_ALU32_IMM(BPF_MOV, R2, 2),
-			BPF_ALU32_IMM(BPF_MOV, R3, 3),
-			BPF_ALU32_IMM(BPF_MOV, R4, 4),
-			BPF_ALU32_IMM(BPF_MOV, R5, 5),
-			BPF_ALU32_IMM(BPF_MOV, R6, 6),
-			BPF_ALU32_IMM(BPF_MOV, R7, 7),
-			BPF_ALU32_IMM(BPF_MOV, R8, 8),
-			BPF_ALU32_IMM(BPF_MOV, R9, 9),
-			BPF_ALU64_IMM(BPF_ADD, R1, 10),
-			BPF_ALU64_IMM(BPF_ADD, R2, 10),
-			BPF_ALU64_IMM(BPF_ADD, R3, 10),
-			BPF_ALU64_IMM(BPF_ADD, R4, 10),
-			BPF_ALU64_IMM(BPF_ADD, R5, 10),
-			BPF_ALU64_IMM(BPF_ADD, R6, 10),
-			BPF_ALU64_IMM(BPF_ADD, R7, 10),
-			BPF_ALU64_IMM(BPF_ADD, R8, 10),
-			BPF_ALU64_IMM(BPF_ADD, R9, 10),
-			BPF_ALU32_REG(BPF_ADD, R0, R1),
-			BPF_ALU32_REG(BPF_ADD, R0, R2),
-			BPF_ALU32_REG(BPF_ADD, R0, R3),
-			BPF_ALU32_REG(BPF_ADD, R0, R4),
-			BPF_ALU32_REG(BPF_ADD, R0, R5),
-			BPF_ALU32_REG(BPF_ADD, R0, R6),
-			BPF_ALU32_REG(BPF_ADD, R0, R7),
-			BPF_ALU32_REG(BPF_ADD, R0, R8),
-			BPF_ALU32_REG(BPF_ADD, R0, R9), /* R0 == 155 */
-			BPF_JMP_IMM(BPF_JEQ, R0, 155, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R1, R0),
-			BPF_ALU32_REG(BPF_ADD, R1, R1),
-			BPF_ALU32_REG(BPF_ADD, R1, R2),
-			BPF_ALU32_REG(BPF_ADD, R1, R3),
-			BPF_ALU32_REG(BPF_ADD, R1, R4),
-			BPF_ALU32_REG(BPF_ADD, R1, R5),
-			BPF_ALU32_REG(BPF_ADD, R1, R6),
-			BPF_ALU32_REG(BPF_ADD, R1, R7),
-			BPF_ALU32_REG(BPF_ADD, R1, R8),
-			BPF_ALU32_REG(BPF_ADD, R1, R9), /* R1 == 456 */
-			BPF_JMP_IMM(BPF_JEQ, R1, 456, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R2, R0),
-			BPF_ALU32_REG(BPF_ADD, R2, R1),
-			BPF_ALU32_REG(BPF_ADD, R2, R2),
-			BPF_ALU32_REG(BPF_ADD, R2, R3),
-			BPF_ALU32_REG(BPF_ADD, R2, R4),
-			BPF_ALU32_REG(BPF_ADD, R2, R5),
-			BPF_ALU32_REG(BPF_ADD, R2, R6),
-			BPF_ALU32_REG(BPF_ADD, R2, R7),
-			BPF_ALU32_REG(BPF_ADD, R2, R8),
-			BPF_ALU32_REG(BPF_ADD, R2, R9), /* R2 == 1358 */
-			BPF_JMP_IMM(BPF_JEQ, R2, 1358, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R3, R0),
-			BPF_ALU32_REG(BPF_ADD, R3, R1),
-			BPF_ALU32_REG(BPF_ADD, R3, R2),
-			BPF_ALU32_REG(BPF_ADD, R3, R3),
-			BPF_ALU32_REG(BPF_ADD, R3, R4),
-			BPF_ALU32_REG(BPF_ADD, R3, R5),
-			BPF_ALU32_REG(BPF_ADD, R3, R6),
-			BPF_ALU32_REG(BPF_ADD, R3, R7),
-			BPF_ALU32_REG(BPF_ADD, R3, R8),
-			BPF_ALU32_REG(BPF_ADD, R3, R9), /* R3 == 4063 */
-			BPF_JMP_IMM(BPF_JEQ, R3, 4063, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R4, R0),
-			BPF_ALU32_REG(BPF_ADD, R4, R1),
-			BPF_ALU32_REG(BPF_ADD, R4, R2),
-			BPF_ALU32_REG(BPF_ADD, R4, R3),
-			BPF_ALU32_REG(BPF_ADD, R4, R4),
-			BPF_ALU32_REG(BPF_ADD, R4, R5),
-			BPF_ALU32_REG(BPF_ADD, R4, R6),
-			BPF_ALU32_REG(BPF_ADD, R4, R7),
-			BPF_ALU32_REG(BPF_ADD, R4, R8),
-			BPF_ALU32_REG(BPF_ADD, R4, R9), /* R4 == 12177 */
-			BPF_JMP_IMM(BPF_JEQ, R4, 12177, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R5, R0),
-			BPF_ALU32_REG(BPF_ADD, R5, R1),
-			BPF_ALU32_REG(BPF_ADD, R5, R2),
-			BPF_ALU32_REG(BPF_ADD, R5, R3),
-			BPF_ALU32_REG(BPF_ADD, R5, R4),
-			BPF_ALU32_REG(BPF_ADD, R5, R5),
-			BPF_ALU32_REG(BPF_ADD, R5, R6),
-			BPF_ALU32_REG(BPF_ADD, R5, R7),
-			BPF_ALU32_REG(BPF_ADD, R5, R8),
-			BPF_ALU32_REG(BPF_ADD, R5, R9), /* R5 == 36518 */
-			BPF_JMP_IMM(BPF_JEQ, R5, 36518, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R6, R0),
-			BPF_ALU32_REG(BPF_ADD, R6, R1),
-			BPF_ALU32_REG(BPF_ADD, R6, R2),
-			BPF_ALU32_REG(BPF_ADD, R6, R3),
-			BPF_ALU32_REG(BPF_ADD, R6, R4),
-			BPF_ALU32_REG(BPF_ADD, R6, R5),
-			BPF_ALU32_REG(BPF_ADD, R6, R6),
-			BPF_ALU32_REG(BPF_ADD, R6, R7),
-			BPF_ALU32_REG(BPF_ADD, R6, R8),
-			BPF_ALU32_REG(BPF_ADD, R6, R9), /* R6 == 109540 */
-			BPF_JMP_IMM(BPF_JEQ, R6, 109540, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R7, R0),
-			BPF_ALU32_REG(BPF_ADD, R7, R1),
-			BPF_ALU32_REG(BPF_ADD, R7, R2),
-			BPF_ALU32_REG(BPF_ADD, R7, R3),
-			BPF_ALU32_REG(BPF_ADD, R7, R4),
-			BPF_ALU32_REG(BPF_ADD, R7, R5),
-			BPF_ALU32_REG(BPF_ADD, R7, R6),
-			BPF_ALU32_REG(BPF_ADD, R7, R7),
-			BPF_ALU32_REG(BPF_ADD, R7, R8),
-			BPF_ALU32_REG(BPF_ADD, R7, R9), /* R7 == 328605 */
-			BPF_JMP_IMM(BPF_JEQ, R7, 328605, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R8, R0),
-			BPF_ALU32_REG(BPF_ADD, R8, R1),
-			BPF_ALU32_REG(BPF_ADD, R8, R2),
-			BPF_ALU32_REG(BPF_ADD, R8, R3),
-			BPF_ALU32_REG(BPF_ADD, R8, R4),
-			BPF_ALU32_REG(BPF_ADD, R8, R5),
-			BPF_ALU32_REG(BPF_ADD, R8, R6),
-			BPF_ALU32_REG(BPF_ADD, R8, R7),
-			BPF_ALU32_REG(BPF_ADD, R8, R8),
-			BPF_ALU32_REG(BPF_ADD, R8, R9), /* R8 == 985799 */
-			BPF_JMP_IMM(BPF_JEQ, R8, 985799, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU32_REG(BPF_ADD, R9, R0),
-			BPF_ALU32_REG(BPF_ADD, R9, R1),
-			BPF_ALU32_REG(BPF_ADD, R9, R2),
-			BPF_ALU32_REG(BPF_ADD, R9, R3),
-			BPF_ALU32_REG(BPF_ADD, R9, R4),
-			BPF_ALU32_REG(BPF_ADD, R9, R5),
-			BPF_ALU32_REG(BPF_ADD, R9, R6),
-			BPF_ALU32_REG(BPF_ADD, R9, R7),
-			BPF_ALU32_REG(BPF_ADD, R9, R8),
-			BPF_ALU32_REG(BPF_ADD, R9, R9), /* R9 == 2957380 */
-			BPF_ALU32_REG(BPF_MOV, R0, R9),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 2957380 } }
-	},
-	{	/* Mainly checking JIT here. */
-		"INT: SUB",
-		.u.insns_int = {
-			BPF_ALU64_IMM(BPF_MOV, R0, 0),
-			BPF_ALU64_IMM(BPF_MOV, R1, 1),
-			BPF_ALU64_IMM(BPF_MOV, R2, 2),
-			BPF_ALU64_IMM(BPF_MOV, R3, 3),
-			BPF_ALU64_IMM(BPF_MOV, R4, 4),
-			BPF_ALU64_IMM(BPF_MOV, R5, 5),
-			BPF_ALU64_IMM(BPF_MOV, R6, 6),
-			BPF_ALU64_IMM(BPF_MOV, R7, 7),
-			BPF_ALU64_IMM(BPF_MOV, R8, 8),
-			BPF_ALU64_IMM(BPF_MOV, R9, 9),
-			BPF_ALU64_REG(BPF_SUB, R0, R0),
-			BPF_ALU64_REG(BPF_SUB, R0, R1),
-			BPF_ALU64_REG(BPF_SUB, R0, R2),
-			BPF_ALU64_REG(BPF_SUB, R0, R3),
-			BPF_ALU64_REG(BPF_SUB, R0, R4),
-			BPF_ALU64_REG(BPF_SUB, R0, R5),
-			BPF_ALU64_REG(BPF_SUB, R0, R6),
-			BPF_ALU64_REG(BPF_SUB, R0, R7),
-			BPF_ALU64_REG(BPF_SUB, R0, R8),
-			BPF_ALU64_REG(BPF_SUB, R0, R9),
-			BPF_ALU64_IMM(BPF_SUB, R0, 10),
-			BPF_JMP_IMM(BPF_JEQ, R0, -55, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R1, R0),
-			BPF_ALU64_REG(BPF_SUB, R1, R2),
-			BPF_ALU64_REG(BPF_SUB, R1, R3),
-			BPF_ALU64_REG(BPF_SUB, R1, R4),
-			BPF_ALU64_REG(BPF_SUB, R1, R5),
-			BPF_ALU64_REG(BPF_SUB, R1, R6),
-			BPF_ALU64_REG(BPF_SUB, R1, R7),
-			BPF_ALU64_REG(BPF_SUB, R1, R8),
-			BPF_ALU64_REG(BPF_SUB, R1, R9),
-			BPF_ALU64_IMM(BPF_SUB, R1, 10),
-			BPF_ALU64_REG(BPF_SUB, R2, R0),
-			BPF_ALU64_REG(BPF_SUB, R2, R1),
-			BPF_ALU64_REG(BPF_SUB, R2, R3),
-			BPF_ALU64_REG(BPF_SUB, R2, R4),
-			BPF_ALU64_REG(BPF_SUB, R2, R5),
-			BPF_ALU64_REG(BPF_SUB, R2, R6),
-			BPF_ALU64_REG(BPF_SUB, R2, R7),
-			BPF_ALU64_REG(BPF_SUB, R2, R8),
-			BPF_ALU64_REG(BPF_SUB, R2, R9),
-			BPF_ALU64_IMM(BPF_SUB, R2, 10),
-			BPF_ALU64_REG(BPF_SUB, R3, R0),
-			BPF_ALU64_REG(BPF_SUB, R3, R1),
-			BPF_ALU64_REG(BPF_SUB, R3, R2),
-			BPF_ALU64_REG(BPF_SUB, R3, R4),
-			BPF_ALU64_REG(BPF_SUB, R3, R5),
-			BPF_ALU64_REG(BPF_SUB, R3, R6),
-			BPF_ALU64_REG(BPF_SUB, R3, R7),
-			BPF_ALU64_REG(BPF_SUB, R3, R8),
-			BPF_ALU64_REG(BPF_SUB, R3, R9),
-			BPF_ALU64_IMM(BPF_SUB, R3, 10),
-			BPF_ALU64_REG(BPF_SUB, R4, R0),
-			BPF_ALU64_REG(BPF_SUB, R4, R1),
-			BPF_ALU64_REG(BPF_SUB, R4, R2),
-			BPF_ALU64_REG(BPF_SUB, R4, R3),
-			BPF_ALU64_REG(BPF_SUB, R4, R5),
-			BPF_ALU64_REG(BPF_SUB, R4, R6),
-			BPF_ALU64_REG(BPF_SUB, R4, R7),
-			BPF_ALU64_REG(BPF_SUB, R4, R8),
-			BPF_ALU64_REG(BPF_SUB, R4, R9),
-			BPF_ALU64_IMM(BPF_SUB, R4, 10),
-			BPF_ALU64_REG(BPF_SUB, R5, R0),
-			BPF_ALU64_REG(BPF_SUB, R5, R1),
-			BPF_ALU64_REG(BPF_SUB, R5, R2),
-			BPF_ALU64_REG(BPF_SUB, R5, R3),
-			BPF_ALU64_REG(BPF_SUB, R5, R4),
-			BPF_ALU64_REG(BPF_SUB, R5, R6),
-			BPF_ALU64_REG(BPF_SUB, R5, R7),
-			BPF_ALU64_REG(BPF_SUB, R5, R8),
-			BPF_ALU64_REG(BPF_SUB, R5, R9),
-			BPF_ALU64_IMM(BPF_SUB, R5, 10),
-			BPF_ALU64_REG(BPF_SUB, R6, R0),
-			BPF_ALU64_REG(BPF_SUB, R6, R1),
-			BPF_ALU64_REG(BPF_SUB, R6, R2),
-			BPF_ALU64_REG(BPF_SUB, R6, R3),
-			BPF_ALU64_REG(BPF_SUB, R6, R4),
-			BPF_ALU64_REG(BPF_SUB, R6, R5),
-			BPF_ALU64_REG(BPF_SUB, R6, R7),
-			BPF_ALU64_REG(BPF_SUB, R6, R8),
-			BPF_ALU64_REG(BPF_SUB, R6, R9),
-			BPF_ALU64_IMM(BPF_SUB, R6, 10),
-			BPF_ALU64_REG(BPF_SUB, R7, R0),
-			BPF_ALU64_REG(BPF_SUB, R7, R1),
-			BPF_ALU64_REG(BPF_SUB, R7, R2),
-			BPF_ALU64_REG(BPF_SUB, R7, R3),
-			BPF_ALU64_REG(BPF_SUB, R7, R4),
-			BPF_ALU64_REG(BPF_SUB, R7, R5),
-			BPF_ALU64_REG(BPF_SUB, R7, R6),
-			BPF_ALU64_REG(BPF_SUB, R7, R8),
-			BPF_ALU64_REG(BPF_SUB, R7, R9),
-			BPF_ALU64_IMM(BPF_SUB, R7, 10),
-			BPF_ALU64_REG(BPF_SUB, R8, R0),
-			BPF_ALU64_REG(BPF_SUB, R8, R1),
-			BPF_ALU64_REG(BPF_SUB, R8, R2),
-			BPF_ALU64_REG(BPF_SUB, R8, R3),
-			BPF_ALU64_REG(BPF_SUB, R8, R4),
-			BPF_ALU64_REG(BPF_SUB, R8, R5),
-			BPF_ALU64_REG(BPF_SUB, R8, R6),
-			BPF_ALU64_REG(BPF_SUB, R8, R7),
-			BPF_ALU64_REG(BPF_SUB, R8, R9),
-			BPF_ALU64_IMM(BPF_SUB, R8, 10),
-			BPF_ALU64_REG(BPF_SUB, R9, R0),
-			BPF_ALU64_REG(BPF_SUB, R9, R1),
-			BPF_ALU64_REG(BPF_SUB, R9, R2),
-			BPF_ALU64_REG(BPF_SUB, R9, R3),
-			BPF_ALU64_REG(BPF_SUB, R9, R4),
-			BPF_ALU64_REG(BPF_SUB, R9, R5),
-			BPF_ALU64_REG(BPF_SUB, R9, R6),
-			BPF_ALU64_REG(BPF_SUB, R9, R7),
-			BPF_ALU64_REG(BPF_SUB, R9, R8),
-			BPF_ALU64_IMM(BPF_SUB, R9, 10),
-			BPF_ALU64_IMM(BPF_SUB, R0, 10),
-			BPF_ALU64_IMM(BPF_NEG, R0, 0),
-			BPF_ALU64_REG(BPF_SUB, R0, R1),
-			BPF_ALU64_REG(BPF_SUB, R0, R2),
-			BPF_ALU64_REG(BPF_SUB, R0, R3),
-			BPF_ALU64_REG(BPF_SUB, R0, R4),
-			BPF_ALU64_REG(BPF_SUB, R0, R5),
-			BPF_ALU64_REG(BPF_SUB, R0, R6),
-			BPF_ALU64_REG(BPF_SUB, R0, R7),
-			BPF_ALU64_REG(BPF_SUB, R0, R8),
-			BPF_ALU64_REG(BPF_SUB, R0, R9),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 11 } }
-	},
-	{	/* Mainly checking JIT here. */
-		"INT: XOR",
-		.u.insns_int = {
-			BPF_ALU64_REG(BPF_SUB, R0, R0),
-			BPF_ALU64_REG(BPF_XOR, R1, R1),
-			BPF_JMP_REG(BPF_JEQ, R0, R1, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_MOV, R0, 10),
-			BPF_ALU64_IMM(BPF_MOV, R1, -1),
-			BPF_ALU64_REG(BPF_SUB, R1, R1),
-			BPF_ALU64_REG(BPF_XOR, R2, R2),
-			BPF_JMP_REG(BPF_JEQ, R1, R2, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R2, R2),
-			BPF_ALU64_REG(BPF_XOR, R3, R3),
-			BPF_ALU64_IMM(BPF_MOV, R0, 10),
-			BPF_ALU64_IMM(BPF_MOV, R1, -1),
-			BPF_JMP_REG(BPF_JEQ, R2, R3, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R3, R3),
-			BPF_ALU64_REG(BPF_XOR, R4, R4),
-			BPF_ALU64_IMM(BPF_MOV, R2, 1),
-			BPF_ALU64_IMM(BPF_MOV, R5, -1),
-			BPF_JMP_REG(BPF_JEQ, R3, R4, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R4, R4),
-			BPF_ALU64_REG(BPF_XOR, R5, R5),
-			BPF_ALU64_IMM(BPF_MOV, R3, 1),
-			BPF_ALU64_IMM(BPF_MOV, R7, -1),
-			BPF_JMP_REG(BPF_JEQ, R5, R4, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_MOV, R5, 1),
-			BPF_ALU64_REG(BPF_SUB, R5, R5),
-			BPF_ALU64_REG(BPF_XOR, R6, R6),
-			BPF_ALU64_IMM(BPF_MOV, R1, 1),
-			BPF_ALU64_IMM(BPF_MOV, R8, -1),
-			BPF_JMP_REG(BPF_JEQ, R5, R6, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R6, R6),
-			BPF_ALU64_REG(BPF_XOR, R7, R7),
-			BPF_JMP_REG(BPF_JEQ, R7, R6, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R7, R7),
-			BPF_ALU64_REG(BPF_XOR, R8, R8),
-			BPF_JMP_REG(BPF_JEQ, R7, R8, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R8, R8),
-			BPF_ALU64_REG(BPF_XOR, R9, R9),
-			BPF_JMP_REG(BPF_JEQ, R9, R8, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R9, R9),
-			BPF_ALU64_REG(BPF_XOR, R0, R0),
-			BPF_JMP_REG(BPF_JEQ, R9, R0, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_SUB, R1, R1),
-			BPF_ALU64_REG(BPF_XOR, R0, R0),
-			BPF_JMP_REG(BPF_JEQ, R9, R0, 2),
-			BPF_ALU64_IMM(BPF_MOV, R0, 0),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_MOV, R0, 1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 1 } }
-	},
-	{	/* Mainly checking JIT here. */
-		"INT: MUL",
-		.u.insns_int = {
-			BPF_ALU64_IMM(BPF_MOV, R0, 11),
-			BPF_ALU64_IMM(BPF_MOV, R1, 1),
-			BPF_ALU64_IMM(BPF_MOV, R2, 2),
-			BPF_ALU64_IMM(BPF_MOV, R3, 3),
-			BPF_ALU64_IMM(BPF_MOV, R4, 4),
-			BPF_ALU64_IMM(BPF_MOV, R5, 5),
-			BPF_ALU64_IMM(BPF_MOV, R6, 6),
-			BPF_ALU64_IMM(BPF_MOV, R7, 7),
-			BPF_ALU64_IMM(BPF_MOV, R8, 8),
-			BPF_ALU64_IMM(BPF_MOV, R9, 9),
-			BPF_ALU64_REG(BPF_MUL, R0, R0),
-			BPF_ALU64_REG(BPF_MUL, R0, R1),
-			BPF_ALU64_REG(BPF_MUL, R0, R2),
-			BPF_ALU64_REG(BPF_MUL, R0, R3),
-			BPF_ALU64_REG(BPF_MUL, R0, R4),
-			BPF_ALU64_REG(BPF_MUL, R0, R5),
-			BPF_ALU64_REG(BPF_MUL, R0, R6),
-			BPF_ALU64_REG(BPF_MUL, R0, R7),
-			BPF_ALU64_REG(BPF_MUL, R0, R8),
-			BPF_ALU64_REG(BPF_MUL, R0, R9),
-			BPF_ALU64_IMM(BPF_MUL, R0, 10),
-			BPF_JMP_IMM(BPF_JEQ, R0, 439084800, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_MUL, R1, R0),
-			BPF_ALU64_REG(BPF_MUL, R1, R2),
-			BPF_ALU64_REG(BPF_MUL, R1, R3),
-			BPF_ALU64_REG(BPF_MUL, R1, R4),
-			BPF_ALU64_REG(BPF_MUL, R1, R5),
-			BPF_ALU64_REG(BPF_MUL, R1, R6),
-			BPF_ALU64_REG(BPF_MUL, R1, R7),
-			BPF_ALU64_REG(BPF_MUL, R1, R8),
-			BPF_ALU64_REG(BPF_MUL, R1, R9),
-			BPF_ALU64_IMM(BPF_MUL, R1, 10),
-			BPF_ALU64_REG(BPF_MOV, R2, R1),
-			BPF_ALU64_IMM(BPF_RSH, R2, 32),
-			BPF_JMP_IMM(BPF_JEQ, R2, 0x5a924, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_LSH, R1, 32),
-			BPF_ALU64_IMM(BPF_ARSH, R1, 32),
-			BPF_JMP_IMM(BPF_JEQ, R1, 0xebb90000, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_REG(BPF_MUL, R2, R0),
-			BPF_ALU64_REG(BPF_MUL, R2, R1),
-			BPF_ALU64_REG(BPF_MUL, R2, R3),
-			BPF_ALU64_REG(BPF_MUL, R2, R4),
-			BPF_ALU64_REG(BPF_MUL, R2, R5),
-			BPF_ALU64_REG(BPF_MUL, R2, R6),
-			BPF_ALU64_REG(BPF_MUL, R2, R7),
-			BPF_ALU64_REG(BPF_MUL, R2, R8),
-			BPF_ALU64_REG(BPF_MUL, R2, R9),
-			BPF_ALU64_IMM(BPF_MUL, R2, 10),
-			BPF_ALU64_IMM(BPF_RSH, R2, 32),
-			BPF_ALU64_REG(BPF_MOV, R0, R2),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, 0x35d97ef2 } }
-	},
-	{
-		"INT: ALU MIX",
-		.u.insns_int = {
-			BPF_ALU64_IMM(BPF_MOV, R0, 11),
-			BPF_ALU64_IMM(BPF_ADD, R0, -1),
-			BPF_ALU64_IMM(BPF_MOV, R2, 2),
-			BPF_ALU64_IMM(BPF_XOR, R2, 3),
-			BPF_ALU64_REG(BPF_DIV, R0, R2),
-			BPF_JMP_IMM(BPF_JEQ, R0, 10, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_MOD, R0, 3),
-			BPF_JMP_IMM(BPF_JEQ, R0, 1, 1),
-			BPF_EXIT_INSN(),
-			BPF_ALU64_IMM(BPF_MOV, R0, -1),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ },
-		{ { 0, -1 } }
-	},
-	{
-		"INT: DIV + ABS",
-		.u.insns_int = {
-			BPF_ALU64_REG(BPF_MOV, R6, R1),
-			BPF_LD_ABS(BPF_B, 3),
-			BPF_ALU64_IMM(BPF_MOV, R2, 2),
-			BPF_ALU32_REG(BPF_DIV, R0, R2),
-			BPF_ALU64_REG(BPF_MOV, R8, R0),
-			BPF_LD_ABS(BPF_B, 4),
-			BPF_ALU64_REG(BPF_ADD, R8, R0),
-			BPF_LD_IND(BPF_B, R8, -70),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ 10, 20, 30, 40, 50 },
-		{ { 4, 0 }, { 5, 10 } }
-	},
-	{
-		"INT: DIV by zero",
-		.u.insns_int = {
-			BPF_ALU64_REG(BPF_MOV, R6, R1),
-			BPF_ALU64_IMM(BPF_MOV, R7, 0),
-			BPF_LD_ABS(BPF_B, 3),
-			BPF_ALU32_REG(BPF_DIV, R0, R7),
-			BPF_EXIT_INSN(),
-		},
-		INTERNAL,
-		{ 10, 20, 30, 40, 50 },
-		{ { 3, 0 }, { 4, 0 } }
-	},
-	{
-		"check: missing ret",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_IMM, 1),
-		},
-		CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
-		{ },
-		{ }
-	},
-	{
-		"check: div_k_0",
-		.u.insns = {
-			BPF_STMT(BPF_ALU | BPF_DIV | BPF_K, 0),
-			BPF_STMT(BPF_RET | BPF_K, 0)
-		},
-		CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
-		{ },
-		{ }
-	},
-	{
-		"check: unknown insn",
-		.u.insns = {
-			/* seccomp insn, rejected in socket filter */
-			BPF_STMT(BPF_LDX | BPF_W | BPF_ABS, 0),
-			BPF_STMT(BPF_RET | BPF_K, 0)
-		},
-		CLASSIC | FLAG_EXPECTED_FAIL,
-		{ },
-		{ }
-	},
-	{
-		"check: out of range spill/fill",
-		.u.insns = {
-			BPF_STMT(BPF_STX, 16),
-			BPF_STMT(BPF_RET | BPF_K, 0)
-		},
-		CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
-		{ },
-		{ }
-	},
-	{
-		"JUMPS + HOLES",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JGE, 0, 13, 15),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90c2894d, 3, 4),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90c2894d, 1, 2),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JGE, 0, 14, 15),
-			BPF_JUMP(BPF_JMP | BPF_JGE, 0, 13, 14),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ, 0x2ac28349, 2, 3),
-			BPF_JUMP(BPF_JMP | BPF_JEQ, 0x2ac28349, 1, 2),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JGE, 0, 14, 15),
-			BPF_JUMP(BPF_JMP | BPF_JGE, 0, 13, 14),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90d2ff41, 2, 3),
-			BPF_JUMP(BPF_JMP | BPF_JEQ, 0x90d2ff41, 1, 2),
-			BPF_STMT(BPF_LD | BPF_H | BPF_ABS, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0),
-		},
-		CLASSIC,
-		{ 0x00, 0x1b, 0x21, 0x3c, 0x9d, 0xf8,
-		  0x90, 0xe2, 0xba, 0x0a, 0x56, 0xb4,
-		  0x08, 0x00,
-		  0x45, 0x00, 0x00, 0x28, 0x00, 0x00,
-		  0x20, 0x00, 0x40, 0x11, 0x00, 0x00, /* IP header */
-		  0xc0, 0xa8, 0x33, 0x01,
-		  0xc0, 0xa8, 0x33, 0x02,
-		  0xbb, 0xb6,
-		  0xa9, 0xfa,
-		  0x00, 0x14, 0x00, 0x00,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc, 0xcc, 0xcc,
-		  0xcc, 0xcc, 0xcc, 0xcc },
-		{ { 88, 0x001b } }
-	},
-	{
-		"check: RET X",
-		.u.insns = {
-			BPF_STMT(BPF_RET | BPF_X, 0),
-		},
-		CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
-		{ },
-		{ },
-	},
-	{
-		"check: LDX + RET X",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_IMM, 42),
-			BPF_STMT(BPF_RET | BPF_X, 0),
-		},
-		CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
-		{ },
-		{ },
-	},
-	{	/* Mainly checking JIT here. */
-		"M[]: alt STX + LDX",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_IMM, 100),
-			BPF_STMT(BPF_STX, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 0),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 1),
-			BPF_STMT(BPF_LDX | BPF_MEM, 1),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 2),
-			BPF_STMT(BPF_LDX | BPF_MEM, 2),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 3),
-			BPF_STMT(BPF_LDX | BPF_MEM, 3),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 4),
-			BPF_STMT(BPF_LDX | BPF_MEM, 4),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 5),
-			BPF_STMT(BPF_LDX | BPF_MEM, 5),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 6),
-			BPF_STMT(BPF_LDX | BPF_MEM, 6),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 7),
-			BPF_STMT(BPF_LDX | BPF_MEM, 7),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 8),
-			BPF_STMT(BPF_LDX | BPF_MEM, 8),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 9),
-			BPF_STMT(BPF_LDX | BPF_MEM, 9),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 10),
-			BPF_STMT(BPF_LDX | BPF_MEM, 10),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 11),
-			BPF_STMT(BPF_LDX | BPF_MEM, 11),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 12),
-			BPF_STMT(BPF_LDX | BPF_MEM, 12),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 13),
-			BPF_STMT(BPF_LDX | BPF_MEM, 13),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 14),
-			BPF_STMT(BPF_LDX | BPF_MEM, 14),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_STX, 15),
-			BPF_STMT(BPF_LDX | BPF_MEM, 15),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_K, 1),
-			BPF_STMT(BPF_MISC | BPF_TAX, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0),
-		},
-		CLASSIC | FLAG_NO_DATA,
-		{ },
-		{ { 0, 116 } },
-	},
-	{	/* Mainly checking JIT here. */
-		"M[]: full STX + full LDX",
-		.u.insns = {
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xbadfeedb),
-			BPF_STMT(BPF_STX, 0),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xecabedae),
-			BPF_STMT(BPF_STX, 1),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xafccfeaf),
-			BPF_STMT(BPF_STX, 2),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xbffdcedc),
-			BPF_STMT(BPF_STX, 3),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xfbbbdccb),
-			BPF_STMT(BPF_STX, 4),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xfbabcbda),
-			BPF_STMT(BPF_STX, 5),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xaedecbdb),
-			BPF_STMT(BPF_STX, 6),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xadebbade),
-			BPF_STMT(BPF_STX, 7),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xfcfcfaec),
-			BPF_STMT(BPF_STX, 8),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xbcdddbdc),
-			BPF_STMT(BPF_STX, 9),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xfeefdfac),
-			BPF_STMT(BPF_STX, 10),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xcddcdeea),
-			BPF_STMT(BPF_STX, 11),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xaccfaebb),
-			BPF_STMT(BPF_STX, 12),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xbdcccdcf),
-			BPF_STMT(BPF_STX, 13),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xaaedecde),
-			BPF_STMT(BPF_STX, 14),
-			BPF_STMT(BPF_LDX | BPF_IMM, 0xfaeacdad),
-			BPF_STMT(BPF_STX, 15),
-			BPF_STMT(BPF_LDX | BPF_MEM, 0),
-			BPF_STMT(BPF_MISC | BPF_TXA, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 1),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 2),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 3),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 4),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 5),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 6),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 7),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 8),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 9),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 10),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 11),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 12),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 13),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 14),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_LDX | BPF_MEM, 15),
-			BPF_STMT(BPF_ALU | BPF_ADD | BPF_X, 0),
-			BPF_STMT(BPF_RET | BPF_A, 0),
-		},
-		CLASSIC | FLAG_NO_DATA,
-		{ },
-		{ { 0, 0x2a5a5e5 } },
-	},
-	{
-		"check: SKF_AD_MAX",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF + SKF_AD_MAX),
-			BPF_STMT(BPF_RET | BPF_A, 0),
-		},
-		CLASSIC | FLAG_NO_DATA | FLAG_EXPECTED_FAIL,
-		{ },
-		{ },
-	},
-	{	/* Passes checker but fails during runtime. */
-		"LD [SKF_AD_OFF-1]",
-		.u.insns = {
-			BPF_STMT(BPF_LD | BPF_W | BPF_ABS,
-				 SKF_AD_OFF - 1),
-			BPF_STMT(BPF_RET | BPF_K, 1),
-		},
-		CLASSIC,
-		{ },
-		{ { 1, 0 } },
-	},
-};
-
-static struct net_device dev;
-
-static struct sk_buff *populate_skb(char *buf, int size)
-{
-	struct sk_buff *skb;
-
-	if (size >= MAX_DATA)
-		return NULL;
-
-	skb = alloc_skb(MAX_DATA, GFP_KERNEL);
-	if (!skb)
-		return NULL;
-
-	memcpy(__skb_put(skb, size), buf, size);
-
-	/* Initialize a fake skb with test pattern. */
-	skb_reset_mac_header(skb);
-	skb->protocol = htons(ETH_P_IP);
-	skb->pkt_type = SKB_TYPE;
-	skb->mark = SKB_MARK;
-	skb->hash = SKB_HASH;
-	skb->queue_mapping = SKB_QUEUE_MAP;
-	skb->vlan_tci = SKB_VLAN_TCI;
-	skb->dev = &dev;
-	skb->dev->ifindex = SKB_DEV_IFINDEX;
-	skb->dev->type = SKB_DEV_TYPE;
-	skb_set_network_header(skb, min(size, ETH_HLEN));
-
-	return skb;
-}
-
-static void *generate_test_data(struct bpf_test *test, int sub)
-{
-	if (test->aux & FLAG_NO_DATA)
-		return NULL;
-
-	/* Test case expects an skb, so populate one. Various
-	 * subtests generate skbs of different sizes based on
-	 * the same data.
-	 */
-	return populate_skb(test->data, test->test[sub].data_size);
-}
-
-static void release_test_data(const struct bpf_test *test, void *data)
-{
-	if (test->aux & FLAG_NO_DATA)
-		return;
-
-	kfree_skb(data);
-}
-
-static int probe_filter_length(struct sock_filter *fp)
-{
-	int len = 0;
-
-	for (len = MAX_INSNS - 1; len > 0; --len)
-		if (fp[len].code != 0 || fp[len].k != 0)
-			break;
-
-	return len + 1;
-}
-
-static struct sk_filter *generate_filter(int which, int *err)
-{
-	struct sk_filter *fp;
-	struct sock_fprog_kern fprog;
-	unsigned int flen = probe_filter_length(tests[which].u.insns);
-	__u8 test_type = tests[which].aux & TEST_TYPE_MASK;
-
-	switch (test_type) {
-	case CLASSIC:
-		fprog.filter = tests[which].u.insns;
-		fprog.len = flen;
-
-		*err = sk_unattached_filter_create(&fp, &fprog);
-		if (tests[which].aux & FLAG_EXPECTED_FAIL) {
-			if (*err == -EINVAL) {
-				pr_cont("PASS\n");
-				/* Verifier rejected filter as expected. */
-				*err = 0;
-				return NULL;
-			} else {
-				pr_cont("UNEXPECTED_PASS\n");
-				/* Verifier didn't reject the test that's
-				 * bad enough, just return!
-				 */
-				*err = -EINVAL;
-				return NULL;
-			}
-		}
-		/* We don't expect to fail. */
-		if (*err) {
-			pr_cont("FAIL to attach err=%d len=%d\n",
-				*err, fprog.len);
-			return NULL;
-		}
-		break;
-
-	case INTERNAL:
-		fp = kzalloc(sk_filter_size(flen), GFP_KERNEL);
-		if (fp == NULL) {
-			pr_cont("UNEXPECTED_FAIL no memory left\n");
-			*err = -ENOMEM;
-			return NULL;
-		}
-
-		fp->len = flen;
-		memcpy(fp->insnsi, tests[which].u.insns_int,
-		       fp->len * sizeof(struct sock_filter_int));
-
-		sk_filter_select_runtime(fp);
-		break;
-	}
-
-	*err = 0;
-	return fp;
-}
-
-static void release_filter(struct sk_filter *fp, int which)
-{
-	__u8 test_type = tests[which].aux & TEST_TYPE_MASK;
-
-	switch (test_type) {
-	case CLASSIC:
-		sk_unattached_filter_destroy(fp);
-		break;
-	case INTERNAL:
-		sk_filter_free(fp);
-		break;
-	}
-}
-
-static int __run_one(const struct sk_filter *fp, const void *data,
-		     int runs, u64 *duration)
-{
-	u64 start, finish;
-	int ret, i;
-
-	start = ktime_to_us(ktime_get());
-
-	for (i = 0; i < runs; i++)
-		ret = SK_RUN_FILTER(fp, data);
-
-	finish = ktime_to_us(ktime_get());
-
-	*duration = (finish - start) * 1000ULL;
-	do_div(*duration, runs);
-
-	return ret;
-}
-
-static int run_one(const struct sk_filter *fp, struct bpf_test *test)
-{
-	int err_cnt = 0, i, runs = MAX_TESTRUNS;
-
-	for (i = 0; i < MAX_SUBTESTS; i++) {
-		void *data;
-		u64 duration;
-		u32 ret;
-
-		if (test->test[i].data_size == 0 &&
-		    test->test[i].result == 0)
-			break;
-
-		data = generate_test_data(test, i);
-		ret = __run_one(fp, data, runs, &duration);
-		release_test_data(test, data);
-
-		if (ret == test->test[i].result) {
-			pr_cont("%lld ", duration);
-		} else {
-			pr_cont("ret %d != %d ", ret,
-				test->test[i].result);
-			err_cnt++;
-		}
-	}
-
-	return err_cnt;
-}
-
-static __init int test_bpf(void)
-{
-	int i, err_cnt = 0, pass_cnt = 0;
-
-	for (i = 0; i < ARRAY_SIZE(tests); i++) {
-		struct sk_filter *fp;
-		int err;
-
-		pr_info("#%d %s ", i, tests[i].descr);
-
-		fp = generate_filter(i, &err);
-		if (fp == NULL) {
-			if (err == 0) {
-				pass_cnt++;
-				continue;
-			}
-
-			return err;
-		}
-		err = run_one(fp, &tests[i]);
-		release_filter(fp, i);
-
-		if (err) {
-			pr_cont("FAIL (%d times)\n", err);
-			err_cnt++;
-		} else {
-			pr_cont("PASS\n");
-			pass_cnt++;
-		}
-	}
-
-	pr_info("Summary: %d PASSED, %d FAILED\n", pass_cnt, err_cnt);
-	return err_cnt ? -EINVAL : 0;
-}
-
-static int __init test_bpf_init(void)
-{
-	return test_bpf();
-}
-
-static void __exit test_bpf_exit(void)
-{
-}
-
-module_init(test_bpf_init);
-module_exit(test_bpf_exit);
-
-MODULE_LICENSE("GPL");
diff --git a/lib/usercopy.c b/lib/usercopy.c
index 4f5b1dd..7cab418 100644
--- a/lib/usercopy.c
+++ b/lib/usercopy.c
@@ -7,3 +7,9 @@ void copy_from_user_overflow(void)
 	WARN(1, "Buffer overflow detected!\n");
 }
 EXPORT_SYMBOL(copy_from_user_overflow);
+
+void copy_to_user_overflow(void)
+{
+	WARN(1, "Buffer overflow detected!\n");
+}
+EXPORT_SYMBOL(copy_to_user_overflow);
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 6fe2c84..2fe5ec6 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -16,6 +16,9 @@
  * - scnprintf and vscnprintf
  */
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+#define __INCLUDED_BY_HIDESYM 1
+#endif
 #include <stdarg.h>
 #include <linux/module.h>	/* for KSYM_SYMBOL_LEN */
 #include <linux/types.h>
@@ -624,7 +627,7 @@ char *symbol_string(char *buf, char *end, void *ptr,
 #ifdef CONFIG_KALLSYMS
 	if (*fmt == 'B')
 		sprint_backtrace(sym, value);
-	else if (*fmt != 'f' && *fmt != 's')
+	else if (*fmt != 'f' && *fmt != 's' && *fmt != 'X')
 		sprint_symbol(sym, value);
 	else
 		sprint_symbol_no_offset(sym, value);
@@ -1183,7 +1186,11 @@ char *address_val(char *buf, char *end, const void *addr,
 	return number(buf, end, num, spec);
 }
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+int kptr_restrict __read_mostly = 2;
+#else
 int kptr_restrict __read_mostly;
+#endif
 
 /*
  * Show a '%p' thing.  A kernel extension is that the '%p' is followed
@@ -1194,8 +1201,10 @@ int kptr_restrict __read_mostly;
  *
  * - 'F' For symbolic function descriptor pointers with offset
  * - 'f' For simple symbolic function names without offset
+ * - 'X' For simple symbolic function names without offset approved for use with GRKERNSEC_HIDESYM
  * - 'S' For symbolic direct pointers with offset
  * - 's' For symbolic direct pointers without offset
+ * - 'A' For symbolic direct pointers with offset approved for use with GRKERNSEC_HIDESYM
  * - '[FfSs]R' as above with __builtin_extract_return_addr() translation
  * - 'B' For backtraced symbolic direct pointers with offset
  * - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref]
@@ -1263,12 +1272,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 
 	if (!ptr && *fmt != 'K') {
 		/*
-		 * Print (null) with the same width as a pointer so it makes
+		 * Print (nil) with the same width as a pointer so it makes
 		 * tabular output look nice.
 		 */
 		if (spec.field_width == -1)
 			spec.field_width = default_width;
-		return string(buf, end, "(null)", spec);
+		return string(buf, end, "(nil)", spec);
 	}
 
 	switch (*fmt) {
@@ -1278,6 +1287,14 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 		/* Fallthrough */
 	case 'S':
 	case 's':
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+		break;
+#else
+		return symbol_string(buf, end, ptr, spec, fmt);
+#endif
+	case 'X':
+		ptr = dereference_function_descriptor(ptr);
+	case 'A':
 	case 'B':
 		return symbol_string(buf, end, ptr, spec, fmt);
 	case 'R':
@@ -1333,6 +1350,8 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 			va_end(va);
 			return buf;
 		}
+	case 'P':
+		break;
 	case 'K':
 		/*
 		 * %pK cannot be used in IRQ context because its test
@@ -1390,6 +1409,22 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 				   ((const struct file *)ptr)->f_path.dentry,
 				   spec, fmt);
 	}
+
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	/* 'P' = approved pointers to copy to userland,
+	   as in the /proc/kallsyms case, as we make it display nothing
+	   for non-root users, and the real contents for root users
+	   'X' = approved simple symbols
+	   Also ignore 'K' pointers, since we force their NULLing for non-root users
+	   above
+	*/
+	if ((unsigned long)ptr > TASK_SIZE && *fmt != 'P' && *fmt != 'X' && *fmt != 'K' && is_usercopy_object(buf)) {
+		printk(KERN_ALERT "grsec: kernel infoleak detected!  Please report this log to spender@grsecurity.net.\n");
+		dump_stack();
+		ptr = NULL;
+	}
+#endif
+
 	spec.flags |= SMALL;
 	if (spec.field_width == -1) {
 		spec.field_width = default_width;
@@ -2089,11 +2124,11 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
 	typeof(type) value;						\
 	if (sizeof(type) == 8) {					\
 		args = PTR_ALIGN(args, sizeof(u32));			\
-		*(u32 *)&value = *(u32 *)args;				\
-		*((u32 *)&value + 1) = *(u32 *)(args + 4);		\
+		*(u32 *)&value = *(const u32 *)args;			\
+		*((u32 *)&value + 1) = *(const u32 *)(args + 4);	\
 	} else {							\
 		args = PTR_ALIGN(args, sizeof(type));			\
-		value = *(typeof(type) *)args;				\
+		value = *(const typeof(type) *)args;			\
 	}								\
 	args += sizeof(type);						\
 	value;								\
@@ -2156,7 +2191,7 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
 		case FORMAT_TYPE_STR: {
 			const char *str_arg = args;
 			args += strlen(str_arg) + 1;
-			str = string(str, end, (char *)str_arg, spec);
+			str = string(str, end, str_arg, spec);
 			break;
 		}
 
diff --git a/localversion-grsec b/localversion-grsec
new file mode 100644
index 0000000..7cd6065
--- /dev/null
+++ b/localversion-grsec
@@ -0,0 +1 @@
+-grsec
diff --git a/mm/Kconfig b/mm/Kconfig
index 3e9977a..205074f 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -333,10 +333,11 @@ config KSM
 	  root has set /sys/kernel/mm/ksm/run to 1 (if CONFIG_SYSFS is set).
 
 config DEFAULT_MMAP_MIN_ADDR
-        int "Low address space to protect from user allocation"
+	int "Low address space to protect from user allocation"
 	depends on MMU
-        default 4096
-        help
+	default 32768 if ALPHA || ARM || PARISC || SPARC32
+	default 65536
+	help
 	  This is the portion of low virtual memory which should be protected
 	  from userspace allocation.  Keeping a user from writing to low pages
 	  can help reduce the impact of kernel NULL pointer bugs.
@@ -367,7 +368,7 @@ config MEMORY_FAILURE
 
 config HWPOISON_INJECT
 	tristate "HWPoison pages injector"
-	depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS
+	depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS && !GRKERNSEC
 	select PROC_PAGE_MONITOR
 
 config NOMMU_INITIAL_TRIM_EXCESS
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 1706cbb..f89dbca 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -12,7 +12,7 @@
 #include <linux/device.h>
 #include <trace/events/writeback.h>
 
-static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
+static atomic_long_unchecked_t bdi_seq = ATOMIC_LONG_INIT(0);
 
 struct backing_dev_info default_backing_dev_info = {
 	.name		= "default",
@@ -533,7 +533,7 @@ int bdi_setup_and_register(struct backing_dev_info *bdi, char *name,
 		return err;
 
 	err = bdi_register(bdi, NULL, "%.28s-%ld", name,
-			   atomic_long_inc_return(&bdi_seq));
+			   atomic_long_inc_return_unchecked(&bdi_seq));
 	if (err) {
 		bdi_destroy(bdi);
 		return err;
diff --git a/mm/filemap.c b/mm/filemap.c
index 8163e04..191cb97 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2074,7 +2074,7 @@ int generic_file_mmap(struct file * file, struct vm_area_struct * vma)
 	struct address_space *mapping = file->f_mapping;
 
 	if (!mapping->a_ops->readpage)
-		return -ENOEXEC;
+		return -ENODEV;
 	file_accessed(file);
 	vma->vm_ops = &generic_file_vm_ops;
 	return 0;
@@ -2252,6 +2252,7 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i
                         *pos = i_size_read(inode);
 
 		if (limit != RLIM_INFINITY) {
+			gr_learn_resource(current, RLIMIT_FSIZE,*pos, 0);
 			if (*pos >= limit) {
 				send_sig(SIGXFSZ, current, 0);
 				return -EFBIG;
diff --git a/mm/fremap.c b/mm/fremap.c
index 72b8fa3..c5b39f1 100644
--- a/mm/fremap.c
+++ b/mm/fremap.c
@@ -180,6 +180,11 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
  retry:
 	vma = find_vma(mm, start);
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma && (mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_flags & VM_MAYEXEC))
+		goto out;
+#endif
+
 	/*
 	 * Make sure the vma is shared, that it supports prefaulting,
 	 * and that the remapped range is valid and fully within
diff --git a/mm/gup.c b/mm/gup.c
index cc5a9e7..d496acf 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -265,11 +265,6 @@ static int faultin_page(struct task_struct *tsk, struct vm_area_struct *vma,
 	unsigned int fault_flags = 0;
 	int ret;
 
-	/* For mlock, just skip the stack guard page. */
-	if ((*flags & FOLL_MLOCK) &&
-			(stack_guard_page_start(vma, address) ||
-			 stack_guard_page_end(vma, address + PAGE_SIZE)))
-		return -ENOENT;
 	if (*flags & FOLL_WRITE)
 		fault_flags |= FAULT_FLAG_WRITE;
 	if (nonblocking)
@@ -424,14 +419,14 @@ long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
 	if (!(gup_flags & FOLL_FORCE))
 		gup_flags |= FOLL_NUMA;
 
-	do {
+	while (nr_pages) {
 		struct page *page;
 		unsigned int foll_flags = gup_flags;
 		unsigned int page_increm;
 
 		/* first iteration or cross vma bound */
 		if (!vma || start >= vma->vm_end) {
-			vma = find_extend_vma(mm, start);
+			vma = find_vma(mm, start);
 			if (!vma && in_gate_area(mm, start)) {
 				int ret;
 				ret = get_gate_page(mm, start & PAGE_MASK,
@@ -443,7 +438,7 @@ long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
 				goto next_page;
 			}
 
-			if (!vma || check_vma_flags(vma, gup_flags))
+			if (!vma || start < vma->vm_start || check_vma_flags(vma, gup_flags))
 				return i ? : -EFAULT;
 			if (is_vm_hugetlb_page(vma)) {
 				i = follow_hugetlb_page(mm, vma, pages, vmas,
@@ -498,7 +493,7 @@ next_page:
 		i += page_increm;
 		start += page_increm * PAGE_SIZE;
 		nr_pages -= page_increm;
-	} while (nr_pages);
+	}
 	return i;
 }
 EXPORT_SYMBOL(__get_user_pages);
diff --git a/mm/highmem.c b/mm/highmem.c
index b32b70c..e512eb0 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -138,8 +138,9 @@ static void flush_all_zero_pkmaps(void)
 		 * So no dangers, even with speculative execution.
 		 */
 		page = pte_page(pkmap_page_table[i]);
+		pax_open_kernel();
 		pte_clear(&init_mm, PKMAP_ADDR(i), &pkmap_page_table[i]);
-
+		pax_close_kernel();
 		set_page_address(page, NULL);
 		need_flush = 1;
 	}
@@ -198,9 +199,11 @@ start:
 		}
 	}
 	vaddr = PKMAP_ADDR(last_pkmap_nr);
+
+	pax_open_kernel();
 	set_pte_at(&init_mm, vaddr,
 		   &(pkmap_page_table[last_pkmap_nr]), mk_pte(page, kmap_prot));
-
+	pax_close_kernel();
 	pkmap_count[last_pkmap_nr] = 1;
 	set_page_address(page, (void *)vaddr);
 
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 7ae5444..aea22b2 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2253,6 +2253,7 @@ static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
 	struct hstate *h = &default_hstate;
 	unsigned long tmp;
 	int ret;
+	ctl_table_no_const hugetlb_table;
 
 	if (!hugepages_supported())
 		return -ENOTSUPP;
@@ -2262,9 +2263,10 @@ static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
 	if (write && hstate_is_gigantic(h) && !gigantic_page_supported())
 		return -EINVAL;
 
-	table->data = &tmp;
-	table->maxlen = sizeof(unsigned long);
-	ret = proc_doulongvec_minmax(table, write, buffer, length, ppos);
+	hugetlb_table = *table;
+	hugetlb_table.data = &tmp;
+	hugetlb_table.maxlen = sizeof(unsigned long);
+	ret = proc_doulongvec_minmax(&hugetlb_table, write, buffer, length, ppos);
 	if (ret)
 		goto out;
 
@@ -2309,6 +2311,7 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
 	struct hstate *h = &default_hstate;
 	unsigned long tmp;
 	int ret;
+	ctl_table_no_const hugetlb_table;
 
 	if (!hugepages_supported())
 		return -ENOTSUPP;
@@ -2318,9 +2321,10 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
 	if (write && hstate_is_gigantic(h))
 		return -EINVAL;
 
-	table->data = &tmp;
-	table->maxlen = sizeof(unsigned long);
-	ret = proc_doulongvec_minmax(table, write, buffer, length, ppos);
+	hugetlb_table = *table;
+	hugetlb_table.data = &tmp;
+	hugetlb_table.maxlen = sizeof(unsigned long);
+	ret = proc_doulongvec_minmax(&hugetlb_table, write, buffer, length, ppos);
 	if (ret)
 		goto out;
 
@@ -2801,6 +2805,27 @@ static int unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
 	return 1;
 }
 
+#ifdef CONFIG_PAX_SEGMEXEC
+static void pax_mirror_huge_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	struct vm_area_struct *vma_m;
+	unsigned long address_m;
+	pte_t *ptep_m;
+
+	vma_m = pax_find_mirror_vma(vma);
+	if (!vma_m)
+		return;
+
+	BUG_ON(address >= SEGMEXEC_TASK_SIZE);
+	address_m = address + SEGMEXEC_TASK_SIZE;
+	ptep_m = huge_pte_offset(mm, address_m & HPAGE_MASK);
+	get_page(page_m);
+	hugepage_add_anon_rmap(page_m, vma_m, address_m);
+	set_huge_pte_at(mm, address_m, ptep_m, make_huge_pte(vma_m, page_m, 0));
+}
+#endif
+
 /*
  * Hugetlb_cow() should be called with page lock of the original hugepage held.
  * Called with hugetlb_instantiation_mutex held and pte_page locked so we
@@ -2918,6 +2943,11 @@ retry_avoidcopy:
 				make_huge_pte(vma, new_page, 1));
 		page_remove_rmap(old_page);
 		hugepage_add_new_anon_rmap(new_page, vma, address);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		pax_mirror_huge_pte(vma, address, new_page);
+#endif
+
 		/* Make the old page be freed below */
 		new_page = old_page;
 	}
@@ -3077,6 +3107,10 @@ retry:
 				&& (vma->vm_flags & VM_SHARED)));
 	set_huge_pte_at(mm, address, ptep, new_pte);
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_huge_pte(vma, address, page);
+#endif
+
 	if ((flags & FAULT_FLAG_WRITE) && !(vma->vm_flags & VM_SHARED)) {
 		/* Optimization, do the COW without a second fault */
 		ret = hugetlb_cow(mm, vma, address, ptep, new_pte, page, ptl);
@@ -3143,6 +3177,10 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 	struct hstate *h = hstate_vma(vma);
 	struct address_space *mapping;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m;
+#endif
+
 	address &= huge_page_mask(h);
 
 	ptep = huge_pte_offset(mm, address);
@@ -3156,6 +3194,26 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 				VM_FAULT_SET_HINDEX(hstate_index(h));
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	vma_m = pax_find_mirror_vma(vma);
+	if (vma_m) {
+		unsigned long address_m;
+
+		if (vma->vm_start > vma_m->vm_start) {
+			address_m = address;
+			address -= SEGMEXEC_TASK_SIZE;
+			vma = vma_m;
+			h = hstate_vma(vma);
+		} else
+			address_m = address + SEGMEXEC_TASK_SIZE;
+
+		if (!huge_pte_alloc(mm, address_m, huge_page_size(h)))
+			return VM_FAULT_OOM;
+		address_m &= HPAGE_MASK;
+		unmap_hugepage_range(vma, address_m, address_m + HPAGE_SIZE, NULL);
+	}
+#endif
+
 	ptep = huge_pte_alloc(mm, address, huge_page_size(h));
 	if (!ptep)
 		return VM_FAULT_OOM;
diff --git a/mm/internal.h b/mm/internal.h
index 7f22a11f..f3c207f 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -109,6 +109,7 @@ extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address);
  * in mm/page_alloc.c
  */
 extern void __free_pages_bootmem(struct page *page, unsigned int order);
+extern void free_compound_page(struct page *page);
 extern void prep_compound_page(struct page *page, unsigned long order);
 #ifdef CONFIG_MEMORY_FAILURE
 extern bool is_free_buddy_page(struct page *page);
@@ -351,7 +352,7 @@ extern u32 hwpoison_filter_enable;
 
 extern unsigned long vm_mmap_pgoff(struct file *, unsigned long,
         unsigned long, unsigned long,
-        unsigned long, unsigned long);
+        unsigned long, unsigned long) __intentional_overflow(-1);
 
 extern void set_pageblock_order(void);
 unsigned long reclaim_clean_pages_from_list(struct zone *zone,
diff --git a/mm/iov_iter.c b/mm/iov_iter.c
index 7b5dbd1..af0e329 100644
--- a/mm/iov_iter.c
+++ b/mm/iov_iter.c
@@ -173,7 +173,7 @@ static size_t __iovec_copy_from_user_inatomic(char *vaddr,
 
 	while (bytes) {
 		char __user *buf = iov->iov_base + base;
-		int copy = min(bytes, iov->iov_len - base);
+		size_t copy = min(bytes, iov->iov_len - base);
 
 		base = 0;
 		left = __copy_from_user_inatomic(vaddr, buf, copy);
@@ -201,7 +201,7 @@ static size_t copy_from_user_atomic_iovec(struct page *page,
 
 	kaddr = kmap_atomic(page);
 	if (likely(i->nr_segs == 1)) {
-		int left;
+		size_t left;
 		char __user *buf = i->iov->iov_base + i->iov_offset;
 		left = __copy_from_user_inatomic(kaddr + offset, buf, bytes);
 		copied = bytes - left;
@@ -231,7 +231,7 @@ static void advance_iovec(struct iov_iter *i, size_t bytes)
 		 * zero-length segments (without overruning the iovec).
 		 */
 		while (bytes || unlikely(i->count && !iov->iov_len)) {
-			int copy;
+			size_t copy;
 
 			copy = min(bytes, iov->iov_len - base);
 			BUG_ON(!i->count || i->count < copy);
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 3cda50c..032ba634 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -364,7 +364,7 @@ static void print_unreferenced(struct seq_file *seq,
 
 	for (i = 0; i < object->trace_len; i++) {
 		void *ptr = (void *)object->trace[i];
-		seq_printf(seq, "    [<%p>] %pS\n", ptr, ptr);
+		seq_printf(seq, "    [<%pP>] %pA\n", ptr, ptr);
 	}
 }
 
@@ -1905,7 +1905,7 @@ static int __init kmemleak_late_init(void)
 		return -ENOMEM;
 	}
 
-	dentry = debugfs_create_file("kmemleak", S_IRUGO, NULL, NULL,
+	dentry = debugfs_create_file("kmemleak", S_IRUSR, NULL, NULL,
 				     &kmemleak_fops);
 	if (!dentry)
 		pr_warning("Failed to create the debugfs kmemleak file\n");
diff --git a/mm/maccess.c b/mm/maccess.c
index d53adf9..03a24bf 100644
--- a/mm/maccess.c
+++ b/mm/maccess.c
@@ -26,7 +26,7 @@ long __probe_kernel_read(void *dst, const void *src, size_t size)
 	set_fs(KERNEL_DS);
 	pagefault_disable();
 	ret = __copy_from_user_inatomic(dst,
-			(__force const void __user *)src, size);
+			(const void __force_user *)src, size);
 	pagefault_enable();
 	set_fs(old_fs);
 
@@ -53,7 +53,7 @@ long __probe_kernel_write(void *dst, const void *src, size_t size)
 
 	set_fs(KERNEL_DS);
 	pagefault_disable();
-	ret = __copy_to_user_inatomic((__force void __user *)dst, src, size);
+	ret = __copy_to_user_inatomic((void __force_user *)dst, src, size);
 	pagefault_enable();
 	set_fs(old_fs);
 
diff --git a/mm/madvise.c b/mm/madvise.c
index a402f8f..f5e5daa 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -51,6 +51,10 @@ static long madvise_behavior(struct vm_area_struct *vma,
 	pgoff_t pgoff;
 	unsigned long new_flags = vma->vm_flags;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m;
+#endif
+
 	switch (behavior) {
 	case MADV_NORMAL:
 		new_flags = new_flags & ~VM_RAND_READ & ~VM_SEQ_READ;
@@ -126,6 +130,13 @@ success:
 	/*
 	 * vm_flags is protected by the mmap_sem held in write mode.
 	 */
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	vma_m = pax_find_mirror_vma(vma);
+	if (vma_m)
+		vma_m->vm_flags = new_flags & ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT);
+#endif
+
 	vma->vm_flags = new_flags;
 
 out:
@@ -274,6 +285,11 @@ static long madvise_dontneed(struct vm_area_struct *vma,
 			     struct vm_area_struct **prev,
 			     unsigned long start, unsigned long end)
 {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m;
+#endif
+
 	*prev = vma;
 	if (vma->vm_flags & (VM_LOCKED|VM_HUGETLB|VM_PFNMAP))
 		return -EINVAL;
@@ -286,6 +302,21 @@ static long madvise_dontneed(struct vm_area_struct *vma,
 		zap_page_range(vma, start, end - start, &details);
 	} else
 		zap_page_range(vma, start, end - start, NULL);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	vma_m = pax_find_mirror_vma(vma);
+	if (vma_m) {
+		if (unlikely(vma->vm_flags & VM_NONLINEAR)) {
+			struct zap_details details = {
+				.nonlinear_vma = vma_m,
+				.last_index = ULONG_MAX,
+			};
+			zap_page_range(vma, start + SEGMEXEC_TASK_SIZE, end - start, &details);
+		} else
+			zap_page_range(vma, start + SEGMEXEC_TASK_SIZE, end - start, NULL);
+	}
+#endif
+
 	return 0;
 }
 
@@ -491,6 +522,16 @@ SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
 	if (end < start)
 		return error;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (current->mm->pax_flags & MF_PAX_SEGMEXEC) {
+		if (end > SEGMEXEC_TASK_SIZE)
+			return error;
+	} else
+#endif
+
+	if (end > TASK_SIZE)
+		return error;
+
 	error = 0;
 	if (end == start)
 		return error;
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index a013bc9..a897a14 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -61,7 +61,7 @@ int sysctl_memory_failure_early_kill __read_mostly = 0;
 
 int sysctl_memory_failure_recovery __read_mostly = 1;
 
-atomic_long_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
+atomic_long_unchecked_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
 
 #if defined(CONFIG_HWPOISON_INJECT) || defined(CONFIG_HWPOISON_INJECT_MODULE)
 
@@ -198,7 +198,7 @@ static int kill_proc(struct task_struct *t, unsigned long addr, int trapno,
 		pfn, t->comm, t->pid);
 	si.si_signo = SIGBUS;
 	si.si_errno = 0;
-	si.si_addr = (void *)addr;
+	si.si_addr = (void __user *)addr;
 #ifdef __ARCH_SI_TRAPNO
 	si.si_trapno = trapno;
 #endif
@@ -791,7 +791,7 @@ static struct page_state {
 	unsigned long res;
 	char *msg;
 	int (*action)(struct page *p, unsigned long pfn);
-} error_states[] = {
+} __do_const error_states[] = {
 	{ reserved,	reserved,	"reserved kernel",	me_kernel },
 	/*
 	 * free pages are specially detected outside this table:
@@ -1099,7 +1099,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
 		nr_pages = 1 << compound_order(hpage);
 	else /* normal page or thp */
 		nr_pages = 1;
-	atomic_long_add(nr_pages, &num_poisoned_pages);
+	atomic_long_add_unchecked(nr_pages, &num_poisoned_pages);
 
 	/*
 	 * We need/can do nothing about count=0 pages.
@@ -1128,7 +1128,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
 			if (PageHWPoison(hpage)) {
 				if ((hwpoison_filter(p) && TestClearPageHWPoison(p))
 				    || (p != hpage && TestSetPageHWPoison(hpage))) {
-					atomic_long_sub(nr_pages, &num_poisoned_pages);
+					atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
 					unlock_page(hpage);
 					return 0;
 				}
@@ -1186,14 +1186,14 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
 	 */
 	if (!PageHWPoison(p)) {
 		printk(KERN_ERR "MCE %#lx: just unpoisoned\n", pfn);
-		atomic_long_sub(nr_pages, &num_poisoned_pages);
+		atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
 		put_page(hpage);
 		res = 0;
 		goto out;
 	}
 	if (hwpoison_filter(p)) {
 		if (TestClearPageHWPoison(p))
-			atomic_long_sub(nr_pages, &num_poisoned_pages);
+			atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
 		unlock_page(hpage);
 		put_page(hpage);
 		return 0;
@@ -1423,7 +1423,7 @@ int unpoison_memory(unsigned long pfn)
 			return 0;
 		}
 		if (TestClearPageHWPoison(p))
-			atomic_long_dec(&num_poisoned_pages);
+			atomic_long_dec_unchecked(&num_poisoned_pages);
 		pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn);
 		return 0;
 	}
@@ -1437,7 +1437,7 @@ int unpoison_memory(unsigned long pfn)
 	 */
 	if (TestClearPageHWPoison(page)) {
 		pr_info("MCE: Software-unpoisoned page %#lx\n", pfn);
-		atomic_long_sub(nr_pages, &num_poisoned_pages);
+		atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
 		freeit = 1;
 		if (PageHuge(page))
 			clear_page_hwpoison_huge_page(page);
@@ -1562,11 +1562,11 @@ static int soft_offline_huge_page(struct page *page, int flags)
 		if (PageHuge(page)) {
 			set_page_hwpoison_huge_page(hpage);
 			dequeue_hwpoisoned_huge_page(hpage);
-			atomic_long_add(1 << compound_order(hpage),
+			atomic_long_add_unchecked(1 << compound_order(hpage),
 					&num_poisoned_pages);
 		} else {
 			SetPageHWPoison(page);
-			atomic_long_inc(&num_poisoned_pages);
+			atomic_long_inc_unchecked(&num_poisoned_pages);
 		}
 	}
 	return ret;
@@ -1605,7 +1605,7 @@ static int __soft_offline_page(struct page *page, int flags)
 		put_page(page);
 		pr_info("soft_offline: %#lx: invalidated\n", pfn);
 		SetPageHWPoison(page);
-		atomic_long_inc(&num_poisoned_pages);
+		atomic_long_inc_unchecked(&num_poisoned_pages);
 		return 0;
 	}
 
@@ -1656,7 +1656,7 @@ static int __soft_offline_page(struct page *page, int flags)
 			if (!is_free_buddy_page(page))
 				pr_info("soft offline: %#lx: page leaked\n",
 					pfn);
-			atomic_long_inc(&num_poisoned_pages);
+			atomic_long_inc_unchecked(&num_poisoned_pages);
 		}
 	} else {
 		pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
@@ -1726,11 +1726,11 @@ int soft_offline_page(struct page *page, int flags)
 		if (PageHuge(page)) {
 			set_page_hwpoison_huge_page(hpage);
 			dequeue_hwpoisoned_huge_page(hpage);
-			atomic_long_add(1 << compound_order(hpage),
+			atomic_long_add_unchecked(1 << compound_order(hpage),
 					&num_poisoned_pages);
 		} else {
 			SetPageHWPoison(page);
-			atomic_long_inc(&num_poisoned_pages);
+			atomic_long_inc_unchecked(&num_poisoned_pages);
 		}
 	}
 	unset_migratetype_isolate(page, MIGRATE_MOVABLE);
diff --git a/mm/memory.c b/mm/memory.c
index 0a21f3d..babeaec 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -413,6 +413,7 @@ static inline void free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
 		free_pte_range(tlb, pmd, addr);
 	} while (pmd++, addr = next, addr != end);
 
+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_PER_CPU_PGD)
 	start &= PUD_MASK;
 	if (start < floor)
 		return;
@@ -427,6 +428,8 @@ static inline void free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
 	pmd = pmd_offset(pud, start);
 	pud_clear(pud);
 	pmd_free_tlb(tlb, pmd, start);
+#endif
+
 }
 
 static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
@@ -446,6 +449,7 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
 		free_pmd_range(tlb, pud, addr, next, floor, ceiling);
 	} while (pud++, addr = next, addr != end);
 
+#if !defined(CONFIG_X86_64) || !defined(CONFIG_PAX_PER_CPU_PGD)
 	start &= PGDIR_MASK;
 	if (start < floor)
 		return;
@@ -460,6 +464,8 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
 	pud = pud_offset(pgd, start);
 	pgd_clear(pgd);
 	pud_free_tlb(tlb, pud, start);
+#endif
+
 }
 
 /*
@@ -1500,6 +1506,10 @@ static int insert_page(struct vm_area_struct *vma, unsigned long addr,
 	page_add_file_rmap(page);
 	set_pte_at(mm, addr, pte, mk_pte(page, prot));
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_file_pte(vma, addr, page, ptl);
+#endif
+
 	retval = 0;
 	pte_unmap_unlock(pte, ptl);
 	return retval;
@@ -1544,9 +1554,21 @@ int vm_insert_page(struct vm_area_struct *vma, unsigned long addr,
 	if (!page_count(page))
 		return -EINVAL;
 	if (!(vma->vm_flags & VM_MIXEDMAP)) {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		struct vm_area_struct *vma_m;
+#endif
+
 		BUG_ON(down_read_trylock(&vma->vm_mm->mmap_sem));
 		BUG_ON(vma->vm_flags & VM_PFNMAP);
 		vma->vm_flags |= VM_MIXEDMAP;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		vma_m = pax_find_mirror_vma(vma);
+		if (vma_m)
+			vma_m->vm_flags |= VM_MIXEDMAP;
+#endif
+
 	}
 	return insert_page(vma, addr, page, vma->vm_page_prot);
 }
@@ -1629,6 +1651,7 @@ int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr,
 			unsigned long pfn)
 {
 	BUG_ON(!(vma->vm_flags & VM_MIXEDMAP));
+	BUG_ON(vma->vm_mirror);
 
 	if (addr < vma->vm_start || addr >= vma->vm_end)
 		return -EFAULT;
@@ -1876,7 +1899,9 @@ static int apply_to_pmd_range(struct mm_struct *mm, pud_t *pud,
 
 	BUG_ON(pud_huge(*pud));
 
-	pmd = pmd_alloc(mm, pud, addr);
+	pmd = (mm == &init_mm) ?
+		pmd_alloc_kernel(mm, pud, addr) :
+		pmd_alloc(mm, pud, addr);
 	if (!pmd)
 		return -ENOMEM;
 	do {
@@ -1896,7 +1921,9 @@ static int apply_to_pud_range(struct mm_struct *mm, pgd_t *pgd,
 	unsigned long next;
 	int err;
 
-	pud = pud_alloc(mm, pgd, addr);
+	pud = (mm == &init_mm) ?
+		pud_alloc_kernel(mm, pgd, addr) :
+		pud_alloc(mm, pgd, addr);
 	if (!pud)
 		return -ENOMEM;
 	do {
@@ -2018,6 +2045,186 @@ static int do_page_mkwrite(struct vm_area_struct *vma, struct page *page,
 	return ret;
 }
 
+#ifdef CONFIG_PAX_SEGMEXEC
+static void pax_unmap_mirror_pte(struct vm_area_struct *vma, unsigned long address, pmd_t *pmd)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	spinlock_t *ptl;
+	pte_t *pte, entry;
+
+	pte = pte_offset_map_lock(mm, pmd, address, &ptl);
+	entry = *pte;
+	if (!pte_present(entry)) {
+		if (!pte_none(entry)) {
+			BUG_ON(pte_file(entry));
+			free_swap_and_cache(pte_to_swp_entry(entry));
+			pte_clear_not_present_full(mm, address, pte, 0);
+		}
+	} else {
+		struct page *page;
+
+		flush_cache_page(vma, address, pte_pfn(entry));
+		entry = ptep_clear_flush(vma, address, pte);
+		BUG_ON(pte_dirty(entry));
+		page = vm_normal_page(vma, address, entry);
+		if (page) {
+			update_hiwater_rss(mm);
+			if (PageAnon(page))
+				dec_mm_counter_fast(mm, MM_ANONPAGES);
+			else
+				dec_mm_counter_fast(mm, MM_FILEPAGES);
+			page_remove_rmap(page);
+			page_cache_release(page);
+		}
+	}
+	pte_unmap_unlock(pte, ptl);
+}
+
+/* PaX: if vma is mirrored, synchronize the mirror's PTE
+ *
+ * the ptl of the lower mapped page is held on entry and is not released on exit
+ * or inside to ensure atomic changes to the PTE states (swapout, mremap, munmap, etc)
+ */
+static void pax_mirror_anon_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	unsigned long address_m;
+	spinlock_t *ptl_m;
+	struct vm_area_struct *vma_m;
+	pmd_t *pmd_m;
+	pte_t *pte_m, entry_m;
+
+	BUG_ON(!page_m || !PageAnon(page_m));
+
+	vma_m = pax_find_mirror_vma(vma);
+	if (!vma_m)
+		return;
+
+	BUG_ON(!PageLocked(page_m));
+	BUG_ON(address >= SEGMEXEC_TASK_SIZE);
+	address_m = address + SEGMEXEC_TASK_SIZE;
+	pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m);
+	pte_m = pte_offset_map(pmd_m, address_m);
+	ptl_m = pte_lockptr(mm, pmd_m);
+	if (ptl != ptl_m) {
+		spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING);
+		if (!pte_none(*pte_m))
+			goto out;
+	}
+
+	entry_m = pfn_pte(page_to_pfn(page_m), vma_m->vm_page_prot);
+	page_cache_get(page_m);
+	page_add_anon_rmap(page_m, vma_m, address_m);
+	inc_mm_counter_fast(mm, MM_ANONPAGES);
+	set_pte_at(mm, address_m, pte_m, entry_m);
+	update_mmu_cache(vma_m, address_m, pte_m);
+out:
+	if (ptl != ptl_m)
+		spin_unlock(ptl_m);
+	pte_unmap(pte_m);
+	unlock_page(page_m);
+}
+
+void pax_mirror_file_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	unsigned long address_m;
+	spinlock_t *ptl_m;
+	struct vm_area_struct *vma_m;
+	pmd_t *pmd_m;
+	pte_t *pte_m, entry_m;
+
+	BUG_ON(!page_m || PageAnon(page_m));
+
+	vma_m = pax_find_mirror_vma(vma);
+	if (!vma_m)
+		return;
+
+	BUG_ON(address >= SEGMEXEC_TASK_SIZE);
+	address_m = address + SEGMEXEC_TASK_SIZE;
+	pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m);
+	pte_m = pte_offset_map(pmd_m, address_m);
+	ptl_m = pte_lockptr(mm, pmd_m);
+	if (ptl != ptl_m) {
+		spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING);
+		if (!pte_none(*pte_m))
+			goto out;
+	}
+
+	entry_m = pfn_pte(page_to_pfn(page_m), vma_m->vm_page_prot);
+	page_cache_get(page_m);
+	page_add_file_rmap(page_m);
+	inc_mm_counter_fast(mm, MM_FILEPAGES);
+	set_pte_at(mm, address_m, pte_m, entry_m);
+	update_mmu_cache(vma_m, address_m, pte_m);
+out:
+	if (ptl != ptl_m)
+		spin_unlock(ptl_m);
+	pte_unmap(pte_m);
+}
+
+static void pax_mirror_pfn_pte(struct vm_area_struct *vma, unsigned long address, unsigned long pfn_m, spinlock_t *ptl)
+{
+	struct mm_struct *mm = vma->vm_mm;
+	unsigned long address_m;
+	spinlock_t *ptl_m;
+	struct vm_area_struct *vma_m;
+	pmd_t *pmd_m;
+	pte_t *pte_m, entry_m;
+
+	vma_m = pax_find_mirror_vma(vma);
+	if (!vma_m)
+		return;
+
+	BUG_ON(address >= SEGMEXEC_TASK_SIZE);
+	address_m = address + SEGMEXEC_TASK_SIZE;
+	pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m);
+	pte_m = pte_offset_map(pmd_m, address_m);
+	ptl_m = pte_lockptr(mm, pmd_m);
+	if (ptl != ptl_m) {
+		spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING);
+		if (!pte_none(*pte_m))
+			goto out;
+	}
+
+	entry_m = pfn_pte(pfn_m, vma_m->vm_page_prot);
+	set_pte_at(mm, address_m, pte_m, entry_m);
+out:
+	if (ptl != ptl_m)
+		spin_unlock(ptl_m);
+	pte_unmap(pte_m);
+}
+
+static void pax_mirror_pte(struct vm_area_struct *vma, unsigned long address, pte_t *pte, pmd_t *pmd, spinlock_t *ptl)
+{
+	struct page *page_m;
+	pte_t entry;
+
+	if (!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC))
+		goto out;
+
+	entry = *pte;
+	page_m  = vm_normal_page(vma, address, entry);
+	if (!page_m)
+	pax_mirror_pfn_pte(vma, address, pte_pfn(entry), ptl);
+	else if (PageAnon(page_m)) {
+		if (pax_find_mirror_vma(vma)) {
+			pte_unmap_unlock(pte, ptl);
+			lock_page(page_m);
+			pte = pte_offset_map_lock(vma->vm_mm, pmd, address, &ptl);
+			if (pte_same(entry, *pte))
+				pax_mirror_anon_pte(vma, address, page_m, ptl);
+			else
+				unlock_page(page_m);
+		}
+	} else
+		pax_mirror_file_pte(vma, address, page_m, ptl);
+
+out:
+	pte_unmap_unlock(pte, ptl);
+}
+#endif
+
 /*
  * This routine handles present pages, when users try to write
  * to a shared page. It is done by copying the page to a new address
@@ -2215,6 +2422,12 @@ gotten:
 	 */
 	page_table = pte_offset_map_lock(mm, pmd, address, &ptl);
 	if (likely(pte_same(*page_table, orig_pte))) {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		if (pax_find_mirror_vma(vma))
+			BUG_ON(!trylock_page(new_page));
+#endif
+
 		if (old_page) {
 			if (!PageAnon(old_page)) {
 				dec_mm_counter_fast(mm, MM_FILEPAGES);
@@ -2266,6 +2479,10 @@ gotten:
 			page_remove_rmap(old_page);
 		}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+		pax_mirror_anon_pte(vma, address, new_page, ptl);
+#endif
+
 		/* Free the old page.. */
 		new_page = old_page;
 		ret |= VM_FAULT_WRITE;
@@ -2539,6 +2756,11 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
 	swap_free(entry);
 	if (vm_swap_full() || (vma->vm_flags & VM_LOCKED) || PageMlocked(page))
 		try_to_free_swap(page);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((flags & FAULT_FLAG_WRITE) || !pax_find_mirror_vma(vma))
+#endif
+
 	unlock_page(page);
 	if (page != swapcache) {
 		/*
@@ -2562,6 +2784,11 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
 
 	/* No need to invalidate - it was non-present before */
 	update_mmu_cache(vma, address, page_table);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_anon_pte(vma, address, page, ptl);
+#endif
+
 unlock:
 	pte_unmap_unlock(page_table, ptl);
 out:
@@ -2581,40 +2808,6 @@ out_release:
 }
 
 /*
- * This is like a special single-page "expand_{down|up}wards()",
- * except we must first make sure that 'address{-|+}PAGE_SIZE'
- * doesn't hit another vma.
- */
-static inline int check_stack_guard_page(struct vm_area_struct *vma, unsigned long address)
-{
-	address &= PAGE_MASK;
-	if ((vma->vm_flags & VM_GROWSDOWN) && address == vma->vm_start) {
-		struct vm_area_struct *prev = vma->vm_prev;
-
-		/*
-		 * Is there a mapping abutting this one below?
-		 *
-		 * That's only ok if it's the same stack mapping
-		 * that has gotten split..
-		 */
-		if (prev && prev->vm_end == address)
-			return prev->vm_flags & VM_GROWSDOWN ? 0 : -ENOMEM;
-
-		expand_downwards(vma, address - PAGE_SIZE);
-	}
-	if ((vma->vm_flags & VM_GROWSUP) && address + PAGE_SIZE == vma->vm_end) {
-		struct vm_area_struct *next = vma->vm_next;
-
-		/* As VM_GROWSDOWN but s/below/above/ */
-		if (next && next->vm_start == address + PAGE_SIZE)
-			return next->vm_flags & VM_GROWSUP ? 0 : -ENOMEM;
-
-		expand_upwards(vma, address + PAGE_SIZE);
-	}
-	return 0;
-}
-
-/*
  * We enter with non-exclusive mmap_sem (to exclude vma changes,
  * but allow concurrent faults), and pte mapped but not yet locked.
  * We return with mmap_sem still held, but pte unmapped and unlocked.
@@ -2623,27 +2816,23 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
 		unsigned long address, pte_t *page_table, pmd_t *pmd,
 		unsigned int flags)
 {
-	struct page *page;
+	struct page *page = NULL;
 	spinlock_t *ptl;
 	pte_t entry;
 
-	pte_unmap(page_table);
-
-	/* Check if we need to add a guard page to the stack */
-	if (check_stack_guard_page(vma, address) < 0)
-		return VM_FAULT_SIGBUS;
-
-	/* Use the zero-page for reads */
 	if (!(flags & FAULT_FLAG_WRITE)) {
 		entry = pte_mkspecial(pfn_pte(my_zero_pfn(address),
 						vma->vm_page_prot));
-		page_table = pte_offset_map_lock(mm, pmd, address, &ptl);
+		ptl = pte_lockptr(mm, pmd);
+		spin_lock(ptl);
 		if (!pte_none(*page_table))
 			goto unlock;
 		goto setpte;
 	}
 
 	/* Allocate our own private page. */
+	pte_unmap(page_table);
+
 	if (unlikely(anon_vma_prepare(vma)))
 		goto oom;
 	page = alloc_zeroed_user_highpage_movable(vma, address);
@@ -2667,6 +2856,11 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
 	if (!pte_none(*page_table))
 		goto release;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (pax_find_mirror_vma(vma))
+		BUG_ON(!trylock_page(page));
+#endif
+
 	inc_mm_counter_fast(mm, MM_ANONPAGES);
 	page_add_new_anon_rmap(page, vma, address);
 setpte:
@@ -2674,6 +2868,12 @@ setpte:
 
 	/* No need to invalidate - it was non-present before */
 	update_mmu_cache(vma, address, page_table);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (page)
+		pax_mirror_anon_pte(vma, address, page, ptl);
+#endif
+
 unlock:
 	pte_unmap_unlock(page_table, ptl);
 	return 0;
@@ -2905,6 +3105,11 @@ static int do_read_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 		return ret;
 	}
 	do_set_pte(vma, address, fault_page, pte, false, false);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_file_pte(vma, address, fault_page, ptl);
+#endif
+
 	unlock_page(fault_page);
 unlock_out:
 	pte_unmap_unlock(pte, ptl);
@@ -2946,7 +3151,18 @@ static int do_cow_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 		page_cache_release(fault_page);
 		goto uncharge_out;
 	}
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (pax_find_mirror_vma(vma))
+		BUG_ON(!trylock_page(new_page));
+#endif
+
 	do_set_pte(vma, address, new_page, pte, true, true);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_anon_pte(vma, address, new_page, ptl);
+#endif
+
 	pte_unmap_unlock(pte, ptl);
 	unlock_page(fault_page);
 	page_cache_release(fault_page);
@@ -2994,6 +3210,11 @@ static int do_shared_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 		return ret;
 	}
 	do_set_pte(vma, address, fault_page, pte, true, false);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_file_pte(vma, address, fault_page, ptl);
+#endif
+
 	pte_unmap_unlock(pte, ptl);
 
 	if (set_page_dirty(fault_page))
@@ -3224,6 +3445,12 @@ static int handle_pte_fault(struct mm_struct *mm,
 		if (flags & FAULT_FLAG_WRITE)
 			flush_tlb_fix_spurious_fault(vma, address);
 	}
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	pax_mirror_pte(vma, address, pte, pmd, ptl);
+	return 0;
+#endif
+
 unlock:
 	pte_unmap_unlock(pte, ptl);
 	return 0;
@@ -3240,9 +3467,41 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
 	pmd_t *pmd;
 	pte_t *pte;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m;
+#endif
+
 	if (unlikely(is_vm_hugetlb_page(vma)))
 		return hugetlb_fault(mm, vma, address, flags);
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	vma_m = pax_find_mirror_vma(vma);
+	if (vma_m) {
+		unsigned long address_m;
+		pgd_t *pgd_m;
+		pud_t *pud_m;
+		pmd_t *pmd_m;
+
+		if (vma->vm_start > vma_m->vm_start) {
+			address_m = address;
+			address -= SEGMEXEC_TASK_SIZE;
+			vma = vma_m;
+		} else
+			address_m = address + SEGMEXEC_TASK_SIZE;
+
+		pgd_m = pgd_offset(mm, address_m);
+		pud_m = pud_alloc(mm, pgd_m, address_m);
+		if (!pud_m)
+			return VM_FAULT_OOM;
+		pmd_m = pmd_alloc(mm, pud_m, address_m);
+		if (!pmd_m)
+			return VM_FAULT_OOM;
+		if (!pmd_present(*pmd_m) && __pte_alloc(mm, vma_m, pmd_m, address_m))
+			return VM_FAULT_OOM;
+		pax_unmap_mirror_pte(vma_m, address_m, pmd_m);
+	}
+#endif
+
 	pgd = pgd_offset(mm, address);
 	pud = pud_alloc(mm, pgd, address);
 	if (!pud)
@@ -3370,6 +3629,23 @@ int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
 	spin_unlock(&mm->page_table_lock);
 	return 0;
 }
+
+int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
+{
+	pud_t *new = pud_alloc_one(mm, address);
+	if (!new)
+		return -ENOMEM;
+
+	smp_wmb(); /* See comment in __pte_alloc */
+
+	spin_lock(&mm->page_table_lock);
+	if (pgd_present(*pgd))		/* Another has populated it */
+		pud_free(mm, new);
+	else
+		pgd_populate_kernel(mm, pgd, new);
+	spin_unlock(&mm->page_table_lock);
+	return 0;
+}
 #endif /* __PAGETABLE_PUD_FOLDED */
 
 #ifndef __PAGETABLE_PMD_FOLDED
@@ -3400,6 +3676,30 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
 	spin_unlock(&mm->page_table_lock);
 	return 0;
 }
+
+int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address)
+{
+	pmd_t *new = pmd_alloc_one(mm, address);
+	if (!new)
+		return -ENOMEM;
+
+	smp_wmb(); /* See comment in __pte_alloc */
+
+	spin_lock(&mm->page_table_lock);
+#ifndef __ARCH_HAS_4LEVEL_HACK
+	if (pud_present(*pud))		/* Another has populated it */
+		pmd_free(mm, new);
+	else
+		pud_populate_kernel(mm, pud, new);
+#else
+	if (pgd_present(*pud))		/* Another has populated it */
+		pmd_free(mm, new);
+	else
+		pgd_populate_kernel(mm, pud, new);
+#endif /* __ARCH_HAS_4LEVEL_HACK */
+	spin_unlock(&mm->page_table_lock);
+	return 0;
+}
 #endif /* __PAGETABLE_PMD_FOLDED */
 
 #if !defined(__HAVE_ARCH_GATE_AREA)
@@ -3413,7 +3713,7 @@ static int __init gate_vma_init(void)
 	gate_vma.vm_start = FIXADDR_USER_START;
 	gate_vma.vm_end = FIXADDR_USER_END;
 	gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
-	gate_vma.vm_page_prot = __P101;
+	gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
 
 	return 0;
 }
@@ -3547,8 +3847,8 @@ out:
 	return ret;
 }
 
-int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
-			void *buf, int len, int write)
+ssize_t generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
+			void *buf, size_t len, int write)
 {
 	resource_size_t phys_addr;
 	unsigned long prot = 0;
@@ -3574,8 +3874,8 @@ EXPORT_SYMBOL_GPL(generic_access_phys);
  * Access another process' address space as given in mm.  If non-NULL, use the
  * given task for page fault accounting.
  */
-static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
-		unsigned long addr, void *buf, int len, int write)
+static ssize_t __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
+		unsigned long addr, void *buf, size_t len, int write)
 {
 	struct vm_area_struct *vma;
 	void *old_buf = buf;
@@ -3583,7 +3883,7 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
 	down_read(&mm->mmap_sem);
 	/* ignore errors, just check how much was successfully transferred */
 	while (len) {
-		int bytes, ret, offset;
+		ssize_t bytes, ret, offset;
 		void *maddr;
 		struct page *page = NULL;
 
@@ -3642,8 +3942,8 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
  *
  * The caller must hold a reference on @mm.
  */
-int access_remote_vm(struct mm_struct *mm, unsigned long addr,
-		void *buf, int len, int write)
+ssize_t access_remote_vm(struct mm_struct *mm, unsigned long addr,
+		void *buf, size_t len, int write)
 {
 	return __access_remote_vm(NULL, mm, addr, buf, len, write);
 }
@@ -3653,11 +3953,11 @@ int access_remote_vm(struct mm_struct *mm, unsigned long addr,
  * Source/target buffer must be kernel space,
  * Do not walk the page table directly, use get_user_pages
  */
-int access_process_vm(struct task_struct *tsk, unsigned long addr,
-		void *buf, int len, int write)
+ssize_t access_process_vm(struct task_struct *tsk, unsigned long addr,
+		void *buf, size_t len, int write)
 {
 	struct mm_struct *mm;
-	int ret;
+	ssize_t ret;
 
 	mm = get_task_mm(tsk);
 	if (!mm)
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 8f5330d..b41914b 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -750,6 +750,10 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
 	unsigned long vmstart;
 	unsigned long vmend;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m;
+#endif
+
 	vma = find_vma(mm, start);
 	if (!vma || vma->vm_start > start)
 		return -EFAULT;
@@ -793,6 +797,16 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
 		err = vma_replace_policy(vma, new_pol);
 		if (err)
 			goto out;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		vma_m = pax_find_mirror_vma(vma);
+		if (vma_m) {
+			err = vma_replace_policy(vma_m, new_pol);
+			if (err)
+				goto out;
+		}
+#endif
+
 	}
 
  out:
@@ -1225,6 +1239,17 @@ static long do_mbind(unsigned long start, unsigned long len,
 
 	if (end < start)
 		return -EINVAL;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC) {
+		if (end > SEGMEXEC_TASK_SIZE)
+			return -EINVAL;
+	} else
+#endif
+
+	if (end > TASK_SIZE)
+		return -EINVAL;
+
 	if (end == start)
 		return 0;
 
@@ -1450,8 +1475,7 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,
 	 */
 	tcred = __task_cred(task);
 	if (!uid_eq(cred->euid, tcred->suid) && !uid_eq(cred->euid, tcred->uid) &&
-	    !uid_eq(cred->uid,  tcred->suid) && !uid_eq(cred->uid,  tcred->uid) &&
-	    !capable(CAP_SYS_NICE)) {
+	    !uid_eq(cred->uid,  tcred->suid) && !capable(CAP_SYS_NICE)) {
 		rcu_read_unlock();
 		err = -EPERM;
 		goto out_put;
@@ -1482,6 +1506,15 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,
 		goto out;
 	}
 
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	if (mm != current->mm &&
+	    (mm->pax_flags & MF_PAX_RANDMMAP || mm->pax_flags & MF_PAX_SEGMEXEC)) {
+		mmput(mm);
+		err = -EPERM;
+		goto out;
+	}
+#endif
+
 	err = do_migrate_pages(mm, old, new,
 		capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
 
diff --git a/mm/migrate.c b/mm/migrate.c
index be6dbf9..febb8ec 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1506,8 +1506,7 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid, unsigned long, nr_pages,
 	 */
 	tcred = __task_cred(task);
 	if (!uid_eq(cred->euid, tcred->suid) && !uid_eq(cred->euid, tcred->uid) &&
-	    !uid_eq(cred->uid,  tcred->suid) && !uid_eq(cred->uid,  tcred->uid) &&
-	    !capable(CAP_SYS_NICE)) {
+	    !uid_eq(cred->uid,  tcred->suid) && !capable(CAP_SYS_NICE)) {
 		rcu_read_unlock();
 		err = -EPERM;
 		goto out;
diff --git a/mm/mlock.c b/mm/mlock.c
index b1eb536..091d154 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -14,6 +14,7 @@
 #include <linux/pagevec.h>
 #include <linux/mempolicy.h>
 #include <linux/syscalls.h>
+#include <linux/security.h>
 #include <linux/sched.h>
 #include <linux/export.h>
 #include <linux/rmap.h>
@@ -606,7 +607,7 @@ static int do_mlock(unsigned long start, size_t len, int on)
 {
 	unsigned long nstart, end, tmp;
 	struct vm_area_struct * vma, * prev;
-	int error;
+	int error = 0;
 
 	VM_BUG_ON(start & ~PAGE_MASK);
 	VM_BUG_ON(len != PAGE_ALIGN(len));
@@ -615,6 +616,9 @@ static int do_mlock(unsigned long start, size_t len, int on)
 		return -EINVAL;
 	if (end == start)
 		return 0;
+	if (end > TASK_SIZE)
+		return -EINVAL;
+
 	vma = find_vma(current->mm, start);
 	if (!vma || vma->vm_start > start)
 		return -ENOMEM;
@@ -626,6 +630,11 @@ static int do_mlock(unsigned long start, size_t len, int on)
 	for (nstart = start ; ; ) {
 		vm_flags_t newflags;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+		if ((current->mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE))
+			break;
+#endif
+
 		/* Here we know that  vma->vm_start <= nstart < vma->vm_end. */
 
 		newflags = vma->vm_flags & ~VM_LOCKED;
@@ -739,6 +748,7 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len)
 	locked += current->mm->locked_vm;
 
 	/* check against resource limits */
+	gr_learn_resource(current, RLIMIT_MEMLOCK, (current->mm->locked_vm << PAGE_SHIFT) + len, 1);
 	if ((locked <= lock_limit) || capable(CAP_IPC_LOCK))
 		error = do_mlock(start, len, 1);
 
@@ -776,6 +786,11 @@ static int do_mlockall(int flags)
 	for (vma = current->mm->mmap; vma ; vma = prev->vm_next) {
 		vm_flags_t newflags;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+		if ((current->mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE))
+			break;
+#endif
+
 		newflags = vma->vm_flags & ~VM_LOCKED;
 		if (flags & MCL_CURRENT)
 			newflags |= VM_LOCKED;
@@ -807,8 +822,10 @@ SYSCALL_DEFINE1(mlockall, int, flags)
 	lock_limit >>= PAGE_SHIFT;
 
 	ret = -ENOMEM;
+
+	gr_learn_resource(current, RLIMIT_MEMLOCK, current->mm->total_vm << PAGE_SHIFT, 1);
+
 	down_write(&current->mm->mmap_sem);
-
 	if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) ||
 	    capable(CAP_IPC_LOCK))
 		ret = do_mlockall(flags);
diff --git a/mm/mmap.c b/mm/mmap.c
index 129b847..fbed804 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -40,6 +40,7 @@
 #include <linux/notifier.h>
 #include <linux/memory.h>
 #include <linux/printk.h>
+#include <linux/random.h>
 
 #include <asm/uaccess.h>
 #include <asm/cacheflush.h>
@@ -56,6 +57,16 @@
 #define arch_rebalance_pgtables(addr, len)		(addr)
 #endif
 
+static inline void verify_mm_writelocked(struct mm_struct *mm)
+{
+#if defined(CONFIG_DEBUG_VM) || defined(CONFIG_PAX)
+	if (unlikely(down_read_trylock(&mm->mmap_sem))) {
+		up_read(&mm->mmap_sem);
+		BUG();
+	}
+#endif
+}
+
 static void unmap_region(struct mm_struct *mm,
 		struct vm_area_struct *vma, struct vm_area_struct *prev,
 		unsigned long start, unsigned long end);
@@ -75,16 +86,25 @@ static void unmap_region(struct mm_struct *mm,
  *		x: (no) no	x: (no) yes	x: (no) yes	x: (yes) yes
  *
  */
-pgprot_t protection_map[16] = {
+pgprot_t protection_map[16] __read_only = {
 	__P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111,
 	__S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
 };
 
-pgprot_t vm_get_page_prot(unsigned long vm_flags)
+pgprot_t vm_get_page_prot(vm_flags_t vm_flags)
 {
-	return __pgprot(pgprot_val(protection_map[vm_flags &
+	pgprot_t prot = __pgprot(pgprot_val(protection_map[vm_flags &
 				(VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) |
 			pgprot_val(arch_vm_get_page_prot(vm_flags)));
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
+	if (!(__supported_pte_mask & _PAGE_NX) &&
+	    (vm_flags & (VM_PAGEEXEC | VM_EXEC)) == VM_PAGEEXEC &&
+	    (vm_flags & (VM_READ | VM_WRITE)))
+		prot = __pgprot(pte_val(pte_exprotect(__pte(pgprot_val(prot)))));
+#endif
+
+	return prot;
 }
 EXPORT_SYMBOL(vm_get_page_prot);
 
@@ -94,6 +114,7 @@ unsigned long sysctl_overcommit_kbytes __read_mostly;
 int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
 unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */
 unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */
+unsigned long sysctl_heap_stack_gap __read_mostly = 64*1024;
 /*
  * Make sure vm_committed_as in one cacheline and not cacheline shared with
  * other variables. It can be updated by several CPUs frequently.
@@ -250,6 +271,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
 	struct vm_area_struct *next = vma->vm_next;
 
 	might_sleep();
+	BUG_ON(vma->vm_mirror);
 	if (vma->vm_ops && vma->vm_ops->close)
 		vma->vm_ops->close(vma);
 	if (vma->vm_file)
@@ -294,6 +316,12 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
 	 * not page aligned -Ram Gupta
 	 */
 	rlim = rlimit(RLIMIT_DATA);
+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
+	/* force a minimum 16MB brk heap on setuid/setgid binaries */
+	if (rlim < PAGE_SIZE && (get_dumpable(mm) != SUID_DUMP_USER) && gr_is_global_nonroot(current_uid()))
+		rlim = 4096 * PAGE_SIZE;
+#endif
+	gr_learn_resource(current, RLIMIT_DATA, (brk - mm->start_brk) + (mm->end_data - mm->start_data), 1);
 	if (rlim < RLIM_INFINITY && (brk - mm->start_brk) +
 			(mm->end_data - mm->start_data) > rlim)
 		goto out;
@@ -944,6 +972,12 @@ static int
 can_vma_merge_before(struct vm_area_struct *vma, unsigned long vm_flags,
 	struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff)
 {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_start == SEGMEXEC_TASK_SIZE)
+		return 0;
+#endif
+
 	if (is_mergeable_vma(vma, file, vm_flags) &&
 	    is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) {
 		if (vma->vm_pgoff == vm_pgoff)
@@ -963,6 +997,12 @@ static int
 can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
 	struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff)
 {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end == SEGMEXEC_TASK_SIZE)
+		return 0;
+#endif
+
 	if (is_mergeable_vma(vma, file, vm_flags) &&
 	    is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) {
 		pgoff_t vm_pglen;
@@ -1005,13 +1045,20 @@ can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
 struct vm_area_struct *vma_merge(struct mm_struct *mm,
 			struct vm_area_struct *prev, unsigned long addr,
 			unsigned long end, unsigned long vm_flags,
-		     	struct anon_vma *anon_vma, struct file *file,
+			struct anon_vma *anon_vma, struct file *file,
 			pgoff_t pgoff, struct mempolicy *policy)
 {
 	pgoff_t pglen = (end - addr) >> PAGE_SHIFT;
 	struct vm_area_struct *area, *next;
 	int err;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	unsigned long addr_m = addr + SEGMEXEC_TASK_SIZE, end_m = end + SEGMEXEC_TASK_SIZE;
+	struct vm_area_struct *area_m = NULL, *next_m = NULL, *prev_m = NULL;
+
+	BUG_ON((mm->pax_flags & MF_PAX_SEGMEXEC) && SEGMEXEC_TASK_SIZE < end);
+#endif
+
 	/*
 	 * We later require that vma->vm_flags == vm_flags,
 	 * so this tests vma->vm_flags & VM_SPECIAL, too.
@@ -1027,6 +1074,15 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
 	if (next && next->vm_end == end)		/* cases 6, 7, 8 */
 		next = next->vm_next;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (prev)
+		prev_m = pax_find_mirror_vma(prev);
+	if (area)
+		area_m = pax_find_mirror_vma(area);
+	if (next)
+		next_m = pax_find_mirror_vma(next);
+#endif
+
 	/*
 	 * Can it merge with the predecessor?
 	 */
@@ -1046,9 +1102,24 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
 							/* cases 1, 6 */
 			err = vma_adjust(prev, prev->vm_start,
 				next->vm_end, prev->vm_pgoff, NULL);
-		} else					/* cases 2, 5, 7 */
+
+#ifdef CONFIG_PAX_SEGMEXEC
+			if (!err && prev_m)
+				err = vma_adjust(prev_m, prev_m->vm_start,
+					next_m->vm_end, prev_m->vm_pgoff, NULL);
+#endif
+
+		} else {				/* cases 2, 5, 7 */
 			err = vma_adjust(prev, prev->vm_start,
 				end, prev->vm_pgoff, NULL);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+			if (!err && prev_m)
+				err = vma_adjust(prev_m, prev_m->vm_start,
+						end_m, prev_m->vm_pgoff, NULL);
+#endif
+
+		}
 		if (err)
 			return NULL;
 		khugepaged_enter_vma_merge(prev);
@@ -1062,12 +1133,27 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
  			mpol_equal(policy, vma_policy(next)) &&
 			can_vma_merge_before(next, vm_flags,
 					anon_vma, file, pgoff+pglen)) {
-		if (prev && addr < prev->vm_end)	/* case 4 */
+		if (prev && addr < prev->vm_end) {	/* case 4 */
 			err = vma_adjust(prev, prev->vm_start,
 				addr, prev->vm_pgoff, NULL);
-		else					/* cases 3, 8 */
+
+#ifdef CONFIG_PAX_SEGMEXEC
+			if (!err && prev_m)
+				err = vma_adjust(prev_m, prev_m->vm_start,
+						addr_m, prev_m->vm_pgoff, NULL);
+#endif
+
+		} else {				/* cases 3, 8 */
 			err = vma_adjust(area, addr, next->vm_end,
 				next->vm_pgoff - pglen, NULL);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+			if (!err && area_m)
+				err = vma_adjust(area_m, addr_m, next_m->vm_end,
+						next_m->vm_pgoff - pglen, NULL);
+#endif
+
+		}
 		if (err)
 			return NULL;
 		khugepaged_enter_vma_merge(area);
@@ -1176,8 +1262,10 @@ none:
 void vm_stat_account(struct mm_struct *mm, unsigned long flags,
 						struct file *file, long pages)
 {
-	const unsigned long stack_flags
-		= VM_STACK_FLAGS & (VM_GROWSUP|VM_GROWSDOWN);
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP) || (flags & (VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)))
+#endif
 
 	mm->total_vm += pages;
 
@@ -1185,7 +1273,7 @@ void vm_stat_account(struct mm_struct *mm, unsigned long flags,
 		mm->shared_vm += pages;
 		if ((flags & (VM_EXEC|VM_WRITE)) == VM_EXEC)
 			mm->exec_vm += pages;
-	} else if (flags & stack_flags)
+	} else if (flags & (VM_GROWSUP|VM_GROWSDOWN))
 		mm->stack_vm += pages;
 }
 #endif /* CONFIG_PROC_FS */
@@ -1215,6 +1303,7 @@ static inline int mlock_future_check(struct mm_struct *mm,
 		locked += mm->locked_vm;
 		lock_limit = rlimit(RLIMIT_MEMLOCK);
 		lock_limit >>= PAGE_SHIFT;
+		gr_learn_resource(current, RLIMIT_MEMLOCK, locked << PAGE_SHIFT, 1);
 		if (locked > lock_limit && !capable(CAP_IPC_LOCK))
 			return -EAGAIN;
 	}
@@ -1241,7 +1330,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 	 * (the exception is when the underlying filesystem is noexec
 	 *  mounted, in which case we dont add PROT_EXEC.)
 	 */
-	if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC))
+	if ((prot & (PROT_READ | PROT_WRITE)) && (current->personality & READ_IMPLIES_EXEC))
 		if (!(file && (file->f_path.mnt->mnt_flags & MNT_NOEXEC)))
 			prot |= PROT_EXEC;
 
@@ -1267,7 +1356,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 	/* Obtain the address to map to. we verify (or select) it and ensure
 	 * that it represents a valid section of the address space.
 	 */
-	addr = get_unmapped_area(file, addr, len, pgoff, flags);
+	addr = get_unmapped_area(file, addr, len, pgoff, flags | ((prot & PROT_EXEC) ? MAP_EXECUTABLE : 0));
 	if (addr & ~PAGE_MASK)
 		return addr;
 
@@ -1278,6 +1367,43 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 	vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags) |
 			mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
 
+#ifdef CONFIG_PAX_MPROTECT
+	if (mm->pax_flags & MF_PAX_MPROTECT) {
+
+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
+		if (file && !pgoff && (vm_flags & VM_EXEC) && mm->binfmt &&
+		    mm->binfmt->handle_mmap)
+			mm->binfmt->handle_mmap(file);
+#endif
+
+#ifndef CONFIG_PAX_MPROTECT_COMPAT
+		if ((vm_flags & (VM_WRITE | VM_EXEC)) == (VM_WRITE | VM_EXEC)) {
+			gr_log_rwxmmap(file);
+
+#ifdef CONFIG_PAX_EMUPLT
+			vm_flags &= ~VM_EXEC;
+#else
+			return -EPERM;
+#endif
+
+		}
+
+		if (!(vm_flags & VM_EXEC))
+			vm_flags &= ~VM_MAYEXEC;
+#else
+		if ((vm_flags & (VM_WRITE | VM_EXEC)) != VM_EXEC)
+			vm_flags &= ~(VM_EXEC | VM_MAYEXEC);
+#endif
+		else
+			vm_flags &= ~VM_MAYWRITE;
+	}
+#endif
+
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
+	if ((mm->pax_flags & MF_PAX_PAGEEXEC) && file)
+		vm_flags &= ~VM_PAGEEXEC;
+#endif
+
 	if (flags & MAP_LOCKED)
 		if (!can_do_mlock())
 			return -EPERM;
@@ -1365,6 +1491,9 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
 			vm_flags |= VM_NORESERVE;
 	}
 
+	if (!gr_acl_handle_mmap(file, prot))
+		return -EACCES;
+	
 	addr = mmap_region(file, addr, len, vm_flags, pgoff);
 	if (!IS_ERR_VALUE(addr) &&
 	    ((vm_flags & VM_LOCKED) ||
@@ -1458,7 +1587,7 @@ int vma_wants_writenotify(struct vm_area_struct *vma)
 	vm_flags_t vm_flags = vma->vm_flags;
 
 	/* If it was private or non-writable, the write bit is already clear */
-	if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED)))
+	if ((vm_flags & (VM_WRITE|VM_SHARED)) != (VM_WRITE|VM_SHARED))
 		return 0;
 
 	/* The backer wishes to know when pages are first written to? */
@@ -1504,7 +1633,22 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
 	struct rb_node **rb_link, *rb_parent;
 	unsigned long charged = 0;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m = NULL;
+#endif
+
+	/*
+	 * mm->mmap_sem is required to protect against another thread
+	 * changing the mappings in case we sleep.
+	 */
+	verify_mm_writelocked(mm);
+
 	/* Check against address space limit. */
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP) || (vm_flags & (VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)))
+#endif
+
 	if (!may_expand_vm(mm, len >> PAGE_SHIFT)) {
 		unsigned long nr_pages;
 
@@ -1523,11 +1667,10 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
 
 	/* Clear old maps */
 	error = -ENOMEM;
-munmap_back:
 	if (find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent)) {
 		if (do_munmap(mm, addr, len))
 			return -ENOMEM;
-		goto munmap_back;
+		BUG_ON(find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent));
 	}
 
 	/*
@@ -1558,6 +1701,16 @@ munmap_back:
 		goto unacct_error;
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vm_flags & VM_EXEC)) {
+		vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+		if (!vma_m) {
+			error = -ENOMEM;
+			goto free_vma;
+		}
+	}
+#endif
+
 	vma->vm_mm = mm;
 	vma->vm_start = addr;
 	vma->vm_end = addr + len;
@@ -1577,6 +1730,13 @@ munmap_back:
 		if (error)
 			goto unmap_and_free_vma;
 
+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
+		if ((mm->pax_flags & MF_PAX_PAGEEXEC) && !(vma->vm_flags & VM_SPECIAL)) {
+			vma->vm_flags |= VM_PAGEEXEC;
+			vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
+		}
+#endif
+
 		/* Can addr have changed??
 		 *
 		 * Answer: Yes, several device drivers can do it in their
@@ -1610,6 +1770,12 @@ munmap_back:
 	}
 
 	vma_link(mm, vma, prev, rb_link, rb_parent);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma_m)
+		BUG_ON(pax_mirror_vma(vma_m, vma));
+#endif
+
 	/* Once vma denies write, undo our temporary denial count */
 	if (vm_flags & VM_DENYWRITE)
 		allow_write_access(file);
@@ -1618,6 +1784,7 @@ out:
 	perf_event_mmap(vma);
 
 	vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
+	track_exec_limit(mm, addr, addr + len, vm_flags);
 	if (vm_flags & VM_LOCKED) {
 		if (!((vm_flags & VM_SPECIAL) || is_vm_hugetlb_page(vma) ||
 					vma == get_gate_vma(current->mm)))
@@ -1650,6 +1817,12 @@ unmap_and_free_vma:
 	unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end);
 	charged = 0;
 free_vma:
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma_m)
+		kmem_cache_free(vm_area_cachep, vma_m);
+#endif
+
 	kmem_cache_free(vm_area_cachep, vma);
 unacct_error:
 	if (charged)
@@ -1657,7 +1830,63 @@ unacct_error:
 	return error;
 }
 
-unsigned long unmapped_area(struct vm_unmapped_area_info *info)
+#ifdef CONFIG_GRKERNSEC_RAND_THREADSTACK
+unsigned long gr_rand_threadstack_offset(const struct mm_struct *mm, const struct file *filp, unsigned long flags)
+{
+	if ((mm->pax_flags & MF_PAX_RANDMMAP) && !filp && (flags & MAP_STACK))
+		return ((prandom_u32() & 0xFF) + 1) << PAGE_SHIFT;
+
+	return 0;
+}
+#endif
+
+bool check_heap_stack_gap(const struct vm_area_struct *vma, unsigned long addr, unsigned long len, unsigned long offset)
+{
+	if (!vma) {
+#ifdef CONFIG_STACK_GROWSUP
+		if (addr > sysctl_heap_stack_gap)
+			vma = find_vma(current->mm, addr - sysctl_heap_stack_gap);
+		else
+			vma = find_vma(current->mm, 0);
+		if (vma && (vma->vm_flags & VM_GROWSUP))
+			return false;
+#endif
+		return true;
+	}
+
+	if (addr + len > vma->vm_start)
+		return false;
+
+	if (vma->vm_flags & VM_GROWSDOWN)
+		return sysctl_heap_stack_gap <= vma->vm_start - addr - len;
+#ifdef CONFIG_STACK_GROWSUP
+	else if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP))
+		return addr - vma->vm_prev->vm_end >= sysctl_heap_stack_gap;
+#endif
+	else if (offset)
+		return offset <= vma->vm_start - addr - len;
+
+	return true;
+}
+
+unsigned long skip_heap_stack_gap(const struct vm_area_struct *vma, unsigned long len, unsigned long offset)
+{
+	if (vma->vm_start < len)
+		return -ENOMEM;
+
+	if (!(vma->vm_flags & VM_GROWSDOWN)) {
+		if (offset <= vma->vm_start - len)
+			return vma->vm_start - len - offset;
+		else
+			return -ENOMEM;
+	}
+
+	if (sysctl_heap_stack_gap <= vma->vm_start - len)
+		return vma->vm_start - len - sysctl_heap_stack_gap;
+	return -ENOMEM;
+}
+
+unsigned long unmapped_area(const struct vm_unmapped_area_info *info)
 {
 	/*
 	 * We implement the search by looking for an rbtree node that
@@ -1705,11 +1934,29 @@ unsigned long unmapped_area(struct vm_unmapped_area_info *info)
 			}
 		}
 
-		gap_start = vma->vm_prev ? vma->vm_prev->vm_end : 0;
+		gap_start = vma->vm_prev ? vma->vm_prev->vm_end: 0;
 check_current:
 		/* Check if current node has a suitable gap */
 		if (gap_start > high_limit)
 			return -ENOMEM;
+
+		if (gap_end - gap_start > info->threadstack_offset)
+			gap_start += info->threadstack_offset;
+		else
+			gap_start = gap_end;
+
+		if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP)) {
+			if (gap_end - gap_start > sysctl_heap_stack_gap)
+				gap_start += sysctl_heap_stack_gap;
+			else
+				gap_start = gap_end;
+		}
+		if (vma->vm_flags & VM_GROWSDOWN) {
+			if (gap_end - gap_start > sysctl_heap_stack_gap)
+				gap_end -= sysctl_heap_stack_gap;
+			else
+				gap_end = gap_start;
+		}
 		if (gap_end >= low_limit && gap_end - gap_start >= length)
 			goto found;
 
@@ -1759,7 +2006,7 @@ found:
 	return gap_start;
 }
 
-unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info)
+unsigned long unmapped_area_topdown(const struct vm_unmapped_area_info *info)
 {
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
@@ -1813,6 +2060,24 @@ check_current:
 		gap_end = vma->vm_start;
 		if (gap_end < low_limit)
 			return -ENOMEM;
+
+		if (gap_end - gap_start > info->threadstack_offset)
+			gap_end -= info->threadstack_offset;
+		else
+			gap_end = gap_start;
+
+		if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP)) {
+			if (gap_end - gap_start > sysctl_heap_stack_gap)
+				gap_start += sysctl_heap_stack_gap;
+			else
+				gap_start = gap_end;
+		}
+		if (vma->vm_flags & VM_GROWSDOWN) {
+			if (gap_end - gap_start > sysctl_heap_stack_gap)
+				gap_end -= sysctl_heap_stack_gap;
+			else
+				gap_end = gap_start;
+		}
 		if (gap_start <= high_limit && gap_end - gap_start >= length)
 			goto found;
 
@@ -1876,6 +2141,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	struct mm_struct *mm = current->mm;
 	struct vm_area_struct *vma;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 
 	if (len > TASK_SIZE - mmap_min_addr)
 		return -ENOMEM;
@@ -1883,11 +2149,15 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	if (flags & MAP_FIXED)
 		return addr;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
-		    (!vma || addr + len <= vma->vm_start))
+		    check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -1896,6 +2166,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
 	info.low_limit = mm->mmap_base;
 	info.high_limit = TASK_SIZE;
 	info.align_mask = 0;
+	info.threadstack_offset = offset;
 	return vm_unmapped_area(&info);
 }
 #endif	
@@ -1914,6 +2185,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	struct mm_struct *mm = current->mm;
 	unsigned long addr = addr0;
 	struct vm_unmapped_area_info info;
+	unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
 
 	/* requested length too big for entire address space */
 	if (len > TASK_SIZE - mmap_min_addr)
@@ -1922,12 +2194,16 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	if (flags & MAP_FIXED)
 		return addr;
 
+#ifdef CONFIG_PAX_RANDMMAP
+	if (!(mm->pax_flags & MF_PAX_RANDMMAP))
+#endif
+
 	/* requesting a specific address */
 	if (addr) {
 		addr = PAGE_ALIGN(addr);
 		vma = find_vma(mm, addr);
 		if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
-				(!vma || addr + len <= vma->vm_start))
+				check_heap_stack_gap(vma, addr, len, offset))
 			return addr;
 	}
 
@@ -1936,6 +2212,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 	info.low_limit = max(PAGE_SIZE, mmap_min_addr);
 	info.high_limit = mm->mmap_base;
 	info.align_mask = 0;
+	info.threadstack_offset = offset;
 	addr = vm_unmapped_area(&info);
 
 	/*
@@ -1948,6 +2225,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
 		VM_BUG_ON(addr != -ENOMEM);
 		info.flags = 0;
 		info.low_limit = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+		if (mm->pax_flags & MF_PAX_RANDMMAP)
+			info.low_limit += mm->delta_mmap;
+#endif
+
 		info.high_limit = TASK_SIZE;
 		addr = vm_unmapped_area(&info);
 	}
@@ -2048,6 +2331,28 @@ find_vma_prev(struct mm_struct *mm, unsigned long addr,
 	return vma;
 }
 
+#ifdef CONFIG_PAX_SEGMEXEC
+struct vm_area_struct *pax_find_mirror_vma(struct vm_area_struct *vma)
+{
+	struct vm_area_struct *vma_m;
+
+	BUG_ON(!vma || vma->vm_start >= vma->vm_end);
+	if (!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) || !(vma->vm_flags & VM_EXEC)) {
+		BUG_ON(vma->vm_mirror);
+		return NULL;
+	}
+	BUG_ON(vma->vm_start < SEGMEXEC_TASK_SIZE && SEGMEXEC_TASK_SIZE < vma->vm_end);
+	vma_m = vma->vm_mirror;
+	BUG_ON(!vma_m || vma_m->vm_mirror != vma);
+	BUG_ON(vma->vm_file != vma_m->vm_file);
+	BUG_ON(vma->vm_end - vma->vm_start != vma_m->vm_end - vma_m->vm_start);
+	BUG_ON(vma->vm_pgoff != vma_m->vm_pgoff);
+	BUG_ON(vma->anon_vma != vma_m->anon_vma && vma->anon_vma->root != vma_m->anon_vma->root);
+	BUG_ON((vma->vm_flags ^ vma_m->vm_flags) & ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT | VM_LOCKED));
+	return vma_m;
+}
+#endif
+
 /*
  * Verify that the stack growth is acceptable and
  * update accounting. This is shared with both the
@@ -2064,6 +2369,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
 		return -ENOMEM;
 
 	/* Stack limit test */
+	gr_learn_resource(current, RLIMIT_STACK, size, 1);
 	if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur))
 		return -ENOMEM;
 
@@ -2074,6 +2380,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
 		locked = mm->locked_vm + grow;
 		limit = ACCESS_ONCE(rlim[RLIMIT_MEMLOCK].rlim_cur);
 		limit >>= PAGE_SHIFT;
+		gr_learn_resource(current, RLIMIT_MEMLOCK, locked << PAGE_SHIFT, 1);
 		if (locked > limit && !capable(CAP_IPC_LOCK))
 			return -ENOMEM;
 	}
@@ -2103,37 +2410,48 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
  * PA-RISC uses this for its stack; IA64 for its Register Backing Store.
  * vma is the last one with address > vma->vm_end.  Have to extend vma.
  */
+#ifndef CONFIG_IA64
+static
+#endif
 int expand_upwards(struct vm_area_struct *vma, unsigned long address)
 {
 	int error;
+	bool locknext;
 
 	if (!(vma->vm_flags & VM_GROWSUP))
 		return -EFAULT;
 
+	/* Also guard against wrapping around to address 0. */
+	if (address < PAGE_ALIGN(address+1))
+		address = PAGE_ALIGN(address+1);
+	else
+		return -ENOMEM;
+
 	/*
 	 * We must make sure the anon_vma is allocated
 	 * so that the anon_vma locking is not a noop.
 	 */
 	if (unlikely(anon_vma_prepare(vma)))
 		return -ENOMEM;
+	locknext = vma->vm_next && (vma->vm_next->vm_flags & VM_GROWSDOWN);
+	if (locknext && anon_vma_prepare(vma->vm_next))
+		return -ENOMEM;
 	vma_lock_anon_vma(vma);
+	if (locknext)
+		vma_lock_anon_vma(vma->vm_next);
 
 	/*
 	 * vma->vm_start/vm_end cannot change under us because the caller
 	 * is required to hold the mmap_sem in read mode.  We need the
-	 * anon_vma lock to serialize against concurrent expand_stacks.
-	 * Also guard against wrapping around to address 0.
+	 * anon_vma locks to serialize against concurrent expand_stacks
+	 * and expand_upwards.
 	 */
-	if (address < PAGE_ALIGN(address+4))
-		address = PAGE_ALIGN(address+4);
-	else {
-		vma_unlock_anon_vma(vma);
-		return -ENOMEM;
-	}
 	error = 0;
 
 	/* Somebody else might have raced and expanded it already */
-	if (address > vma->vm_end) {
+	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)
+		error = -ENOMEM;
+	else if (address > vma->vm_end && (!locknext || vma->vm_next->vm_start >= address)) {
 		unsigned long size, grow;
 
 		size = address - vma->vm_start;
@@ -2168,6 +2486,8 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
 			}
 		}
 	}
+	if (locknext)
+		vma_unlock_anon_vma(vma->vm_next);
 	vma_unlock_anon_vma(vma);
 	khugepaged_enter_vma_merge(vma);
 	validate_mm(vma->vm_mm);
@@ -2182,6 +2502,8 @@ int expand_downwards(struct vm_area_struct *vma,
 				   unsigned long address)
 {
 	int error;
+	bool lockprev = false;
+	struct vm_area_struct *prev;
 
 	/*
 	 * We must make sure the anon_vma is allocated
@@ -2195,6 +2517,15 @@ int expand_downwards(struct vm_area_struct *vma,
 	if (error)
 		return error;
 
+	prev = vma->vm_prev;
+#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64)
+	lockprev = prev && (prev->vm_flags & VM_GROWSUP);
+#endif
+	if (lockprev && anon_vma_prepare(prev))
+		return -ENOMEM;
+	if (lockprev)
+		vma_lock_anon_vma(prev);
+
 	vma_lock_anon_vma(vma);
 
 	/*
@@ -2204,9 +2535,17 @@ int expand_downwards(struct vm_area_struct *vma,
 	 */
 
 	/* Somebody else might have raced and expanded it already */
-	if (address < vma->vm_start) {
+	if (prev && (prev->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) && address - prev->vm_end < sysctl_heap_stack_gap)
+		error = -ENOMEM;
+	else if (address < vma->vm_start && (!lockprev || prev->vm_end <= address)) {
 		unsigned long size, grow;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+		struct vm_area_struct *vma_m;
+
+		vma_m = pax_find_mirror_vma(vma);
+#endif
+
 		size = vma->vm_end - address;
 		grow = (vma->vm_start - address) >> PAGE_SHIFT;
 
@@ -2231,13 +2570,27 @@ int expand_downwards(struct vm_area_struct *vma,
 				vma->vm_pgoff -= grow;
 				anon_vma_interval_tree_post_update_vma(vma);
 				vma_gap_update(vma);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+				if (vma_m) {
+					anon_vma_interval_tree_pre_update_vma(vma_m);
+					vma_m->vm_start -= grow << PAGE_SHIFT;
+					vma_m->vm_pgoff -= grow;
+					anon_vma_interval_tree_post_update_vma(vma_m);
+					vma_gap_update(vma_m);
+				}
+#endif
+
 				spin_unlock(&vma->vm_mm->page_table_lock);
 
+				track_exec_limit(vma->vm_mm, vma->vm_start, vma->vm_end, vma->vm_flags);
 				perf_event_mmap(vma);
 			}
 		}
 	}
 	vma_unlock_anon_vma(vma);
+	if (lockprev)
+		vma_unlock_anon_vma(prev);
 	khugepaged_enter_vma_merge(vma);
 	validate_mm(vma->vm_mm);
 	return error;
@@ -2335,6 +2688,13 @@ static void remove_vma_list(struct mm_struct *mm, struct vm_area_struct *vma)
 	do {
 		long nrpages = vma_pages(vma);
 
+#ifdef CONFIG_PAX_SEGMEXEC
+		if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE)) {
+			vma = remove_vma(vma);
+			continue;
+		}
+#endif
+
 		if (vma->vm_flags & VM_ACCOUNT)
 			nr_accounted += nrpages;
 		vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages);
@@ -2379,6 +2739,16 @@ detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma,
 	insertion_point = (prev ? &prev->vm_next : &mm->mmap);
 	vma->vm_prev = NULL;
 	do {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		if (vma->vm_mirror) {
+			BUG_ON(!vma->vm_mirror->vm_mirror || vma->vm_mirror->vm_mirror != vma);
+			vma->vm_mirror->vm_mirror = NULL;
+			vma->vm_mirror->vm_flags &= ~VM_EXEC;
+			vma->vm_mirror = NULL;
+		}
+#endif
+
 		vma_rb_erase(vma, &mm->mm_rb);
 		mm->map_count--;
 		tail_vma = vma;
@@ -2406,14 +2776,33 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
 	struct vm_area_struct *new;
 	int err = -ENOMEM;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m, *new_m = NULL;
+	unsigned long addr_m = addr + SEGMEXEC_TASK_SIZE;
+#endif
+
 	if (is_vm_hugetlb_page(vma) && (addr &
 					~(huge_page_mask(hstate_vma(vma)))))
 		return -EINVAL;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	vma_m = pax_find_mirror_vma(vma);
+#endif
+
 	new = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
 	if (!new)
 		goto out_err;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma_m) {
+		new_m = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
+		if (!new_m) {
+			kmem_cache_free(vm_area_cachep, new);
+			goto out_err;
+		}
+	}
+#endif
+
 	/* most fields are the same, copy all, and then fixup */
 	*new = *vma;
 
@@ -2426,6 +2815,22 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
 		new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT);
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma_m) {
+		*new_m = *vma_m;
+		INIT_LIST_HEAD(&new_m->anon_vma_chain);
+		new_m->vm_mirror = new;
+		new->vm_mirror = new_m;
+
+		if (new_below)
+			new_m->vm_end = addr_m;
+		else {
+			new_m->vm_start = addr_m;
+			new_m->vm_pgoff += ((addr_m - vma_m->vm_start) >> PAGE_SHIFT);
+		}
+	}
+#endif
+
 	err = vma_dup_policy(vma, new);
 	if (err)
 		goto out_free_vma;
@@ -2445,6 +2850,38 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
 	else
 		err = vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new);
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (!err && vma_m) {
+		struct mempolicy *pol = vma_policy(new);
+
+		if (anon_vma_clone(new_m, vma_m))
+			goto out_free_mpol;
+
+		mpol_get(pol);
+		set_vma_policy(new_m, pol);
+
+		if (new_m->vm_file)
+			get_file(new_m->vm_file);
+
+		if (new_m->vm_ops && new_m->vm_ops->open)
+			new_m->vm_ops->open(new_m);
+
+		if (new_below)
+			err = vma_adjust(vma_m, addr_m, vma_m->vm_end, vma_m->vm_pgoff +
+				((addr_m - new_m->vm_start) >> PAGE_SHIFT), new_m);
+		else
+			err = vma_adjust(vma_m, vma_m->vm_start, addr_m, vma_m->vm_pgoff, new_m);
+
+		if (err) {
+			if (new_m->vm_ops && new_m->vm_ops->close)
+				new_m->vm_ops->close(new_m);
+			if (new_m->vm_file)
+				fput(new_m->vm_file);
+			mpol_put(pol);
+		}
+	}
+#endif
+
 	/* Success. */
 	if (!err)
 		return 0;
@@ -2454,10 +2891,18 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
 		new->vm_ops->close(new);
 	if (new->vm_file)
 		fput(new->vm_file);
-	unlink_anon_vmas(new);
  out_free_mpol:
 	mpol_put(vma_policy(new));
  out_free_vma:
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (new_m) {
+		unlink_anon_vmas(new_m);
+		kmem_cache_free(vm_area_cachep, new_m);
+	}
+#endif
+
+	unlink_anon_vmas(new);
 	kmem_cache_free(vm_area_cachep, new);
  out_err:
 	return err;
@@ -2470,6 +2915,15 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
 int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
 	      unsigned long addr, int new_below)
 {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC) {
+		BUG_ON(vma->vm_end > SEGMEXEC_TASK_SIZE);
+		if (mm->map_count >= sysctl_max_map_count-1)
+			return -ENOMEM;
+	} else
+#endif
+
 	if (mm->map_count >= sysctl_max_map_count)
 		return -ENOMEM;
 
@@ -2481,11 +2935,30 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
  * work.  This now handles partial unmappings.
  * Jeremy Fitzhardinge <jeremy@goop.org>
  */
+#ifdef CONFIG_PAX_SEGMEXEC
 int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 {
+	int ret = __do_munmap(mm, start, len);
+	if (ret || !(mm->pax_flags & MF_PAX_SEGMEXEC))
+		return ret;
+
+	return __do_munmap(mm, start + SEGMEXEC_TASK_SIZE, len);
+}
+
+int __do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
+#else
+int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
+#endif
+{
 	unsigned long end;
 	struct vm_area_struct *vma, *prev, *last;
 
+	/*
+	 * mm->mmap_sem is required to protect against another thread
+	 * changing the mappings in case we sleep.
+	 */
+	verify_mm_writelocked(mm);
+
 	if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start)
 		return -EINVAL;
 
@@ -2560,6 +3033,8 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
 	/* Fix up all other VM information */
 	remove_vma_list(mm, vma);
 
+	track_exec_limit(mm, start, end, 0UL);
+
 	return 0;
 }
 
@@ -2568,6 +3043,13 @@ int vm_munmap(unsigned long start, size_t len)
 	int ret;
 	struct mm_struct *mm = current->mm;
 
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) &&
+	    (len > SEGMEXEC_TASK_SIZE || start > SEGMEXEC_TASK_SIZE-len))
+		return -EINVAL;
+#endif
+
 	down_write(&mm->mmap_sem);
 	ret = do_munmap(mm, start, len);
 	up_write(&mm->mmap_sem);
@@ -2581,16 +3063,6 @@ SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
 	return vm_munmap(addr, len);
 }
 
-static inline void verify_mm_writelocked(struct mm_struct *mm)
-{
-#ifdef CONFIG_DEBUG_VM
-	if (unlikely(down_read_trylock(&mm->mmap_sem))) {
-		WARN_ON(1);
-		up_read(&mm->mmap_sem);
-	}
-#endif
-}
-
 /*
  *  this is really a simplified "do_mmap".  it only handles
  *  anonymous maps.  eventually we may be able to do some
@@ -2604,6 +3076,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
 	struct rb_node ** rb_link, * rb_parent;
 	pgoff_t pgoff = addr >> PAGE_SHIFT;
 	int error;
+	unsigned long charged;
 
 	len = PAGE_ALIGN(len);
 	if (!len)
@@ -2611,10 +3084,24 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
 
 	flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
 
+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
+	if (mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
+		flags &= ~VM_EXEC;
+
+#ifdef CONFIG_PAX_MPROTECT
+		if (mm->pax_flags & MF_PAX_MPROTECT)
+			flags &= ~VM_MAYEXEC;
+#endif
+
+	}
+#endif
+
 	error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED);
 	if (error & ~PAGE_MASK)
 		return error;
 
+	charged = len >> PAGE_SHIFT;
+
 	error = mlock_future_check(mm, mm->def_flags, len);
 	if (error)
 		return error;
@@ -2628,21 +3115,20 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
 	/*
 	 * Clear old maps.  this also does some error checking for us
 	 */
- munmap_back:
 	if (find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent)) {
 		if (do_munmap(mm, addr, len))
 			return -ENOMEM;
-		goto munmap_back;
+		BUG_ON(find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent));
 	}
 
 	/* Check against address space limits *after* clearing old maps... */
-	if (!may_expand_vm(mm, len >> PAGE_SHIFT))
+	if (!may_expand_vm(mm, charged))
 		return -ENOMEM;
 
 	if (mm->map_count > sysctl_max_map_count)
 		return -ENOMEM;
 
-	if (security_vm_enough_memory_mm(mm, len >> PAGE_SHIFT))
+	if (security_vm_enough_memory_mm(mm, charged))
 		return -ENOMEM;
 
 	/* Can we just expand an old private anonymous mapping? */
@@ -2656,7 +3142,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
 	 */
 	vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
 	if (!vma) {
-		vm_unacct_memory(len >> PAGE_SHIFT);
+		vm_unacct_memory(charged);
 		return -ENOMEM;
 	}
 
@@ -2670,10 +3156,11 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
 	vma_link(mm, vma, prev, rb_link, rb_parent);
 out:
 	perf_event_mmap(vma);
-	mm->total_vm += len >> PAGE_SHIFT;
+	mm->total_vm += charged;
 	if (flags & VM_LOCKED)
-		mm->locked_vm += (len >> PAGE_SHIFT);
+		mm->locked_vm += charged;
 	vma->vm_flags |= VM_SOFTDIRTY;
+	track_exec_limit(mm, addr, addr + len, flags);
 	return addr;
 }
 
@@ -2735,6 +3222,7 @@ void exit_mmap(struct mm_struct *mm)
 	while (vma) {
 		if (vma->vm_flags & VM_ACCOUNT)
 			nr_accounted += vma_pages(vma);
+		vma->vm_mirror = NULL;
 		vma = remove_vma(vma);
 	}
 	vm_unacct_memory(nr_accounted);
@@ -2752,6 +3240,13 @@ int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma)
 	struct vm_area_struct *prev;
 	struct rb_node **rb_link, *rb_parent;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m = NULL;
+#endif
+
+	if (security_mmap_addr(vma->vm_start))
+		return -EPERM;
+
 	/*
 	 * The vm_pgoff of a purely anonymous vma should be irrelevant
 	 * until its first write fault, when page's anon_vma and index
@@ -2775,7 +3270,21 @@ int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma)
 	     security_vm_enough_memory_mm(mm, vma_pages(vma)))
 		return -ENOMEM;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_flags & VM_EXEC)) {
+		vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+		if (!vma_m)
+			return -ENOMEM;
+	}
+#endif
+
 	vma_link(mm, vma, prev, rb_link, rb_parent);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (vma_m)
+		BUG_ON(pax_mirror_vma(vma_m, vma));
+#endif
+
 	return 0;
 }
 
@@ -2794,6 +3303,8 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
 	struct rb_node **rb_link, *rb_parent;
 	bool faulted_in_anon_vma = true;
 
+	BUG_ON(vma->vm_mirror);
+
 	/*
 	 * If anonymous vma has not yet been faulted, update new pgoff
 	 * to match new location, to increase its chance of merging.
@@ -2858,6 +3369,39 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
 	return NULL;
 }
 
+#ifdef CONFIG_PAX_SEGMEXEC
+long pax_mirror_vma(struct vm_area_struct *vma_m, struct vm_area_struct *vma)
+{
+	struct vm_area_struct *prev_m;
+	struct rb_node **rb_link_m, *rb_parent_m;
+	struct mempolicy *pol_m;
+
+	BUG_ON(!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) || !(vma->vm_flags & VM_EXEC));
+	BUG_ON(vma->vm_mirror || vma_m->vm_mirror);
+	BUG_ON(!mpol_equal(vma_policy(vma), vma_policy(vma_m)));
+	*vma_m = *vma;
+	INIT_LIST_HEAD(&vma_m->anon_vma_chain);
+	if (anon_vma_clone(vma_m, vma))
+		return -ENOMEM;
+	pol_m = vma_policy(vma_m);
+	mpol_get(pol_m);
+	set_vma_policy(vma_m, pol_m);
+	vma_m->vm_start += SEGMEXEC_TASK_SIZE;
+	vma_m->vm_end += SEGMEXEC_TASK_SIZE;
+	vma_m->vm_flags &= ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT | VM_LOCKED);
+	vma_m->vm_page_prot = vm_get_page_prot(vma_m->vm_flags);
+	if (vma_m->vm_file)
+		get_file(vma_m->vm_file);
+	if (vma_m->vm_ops && vma_m->vm_ops->open)
+		vma_m->vm_ops->open(vma_m);
+	BUG_ON(find_vma_links(vma->vm_mm, vma_m->vm_start, vma_m->vm_end, &prev_m, &rb_link_m, &rb_parent_m));
+	vma_link(vma->vm_mm, vma_m, prev_m, rb_link_m, rb_parent_m);
+	vma_m->vm_mirror = vma;
+	vma->vm_mirror = vma_m;
+	return 0;
+}
+#endif
+
 /*
  * Return true if the calling process may expand its vm space by the passed
  * number of pages
@@ -2869,6 +3413,7 @@ int may_expand_vm(struct mm_struct *mm, unsigned long npages)
 
 	lim = rlimit(RLIMIT_AS) >> PAGE_SHIFT;
 
+	gr_learn_resource(current, RLIMIT_AS, (cur + npages) << PAGE_SHIFT, 1);
 	if (cur + npages > lim)
 		return 0;
 	return 1;
@@ -2951,6 +3496,22 @@ static struct vm_area_struct *__install_special_mapping(
 	vma->vm_start = addr;
 	vma->vm_end = addr + len;
 
+#ifdef CONFIG_PAX_MPROTECT
+	if (mm->pax_flags & MF_PAX_MPROTECT) {
+#ifndef CONFIG_PAX_MPROTECT_COMPAT
+		if ((vm_flags & (VM_WRITE | VM_EXEC)) == (VM_WRITE | VM_EXEC))
+			return ERR_PTR(-EPERM);
+		if (!(vm_flags & VM_EXEC))
+			vm_flags &= ~VM_MAYEXEC;
+#else
+		if ((vm_flags & (VM_WRITE | VM_EXEC)) != VM_EXEC)
+			vm_flags &= ~(VM_EXEC | VM_MAYEXEC);
+#endif
+		else
+			vm_flags &= ~VM_MAYWRITE;
+	}
+#endif
+
 	vma->vm_flags = vm_flags | mm->def_flags | VM_DONTEXPAND | VM_SOFTDIRTY;
 	vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
 
diff --git a/mm/mprotect.c b/mm/mprotect.c
index c43d557..0b7ccd2 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -24,10 +24,18 @@
 #include <linux/migrate.h>
 #include <linux/perf_event.h>
 #include <linux/ksm.h>
+#include <linux/sched/sysctl.h>
+
+#ifdef CONFIG_PAX_MPROTECT
+#include <linux/elf.h>
+#include <linux/binfmts.h>
+#endif
+
 #include <asm/uaccess.h>
 #include <asm/pgtable.h>
 #include <asm/cacheflush.h>
 #include <asm/tlbflush.h>
+#include <asm/mmu_context.h>
 
 #ifndef pgprot_modify
 static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
@@ -256,6 +264,48 @@ unsigned long change_protection(struct vm_area_struct *vma, unsigned long start,
 	return pages;
 }
 
+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
+/* called while holding the mmap semaphor for writing except stack expansion */
+void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot)
+{
+	unsigned long oldlimit, newlimit = 0UL;
+
+	if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || (__supported_pte_mask & _PAGE_NX))
+		return;
+
+	spin_lock(&mm->page_table_lock);
+	oldlimit = mm->context.user_cs_limit;
+	if ((prot & VM_EXEC) && oldlimit < end)
+		/* USER_CS limit moved up */
+		newlimit = end;
+	else if (!(prot & VM_EXEC) && start < oldlimit && oldlimit <= end)
+		/* USER_CS limit moved down */
+		newlimit = start;
+
+	if (newlimit) {
+		mm->context.user_cs_limit = newlimit;
+
+#ifdef CONFIG_SMP
+		wmb();
+		cpus_clear(mm->context.cpu_user_cs_mask);
+		cpu_set(smp_processor_id(), mm->context.cpu_user_cs_mask);
+#endif
+
+		set_user_cs(mm->context.user_cs_base, mm->context.user_cs_limit, smp_processor_id());
+	}
+	spin_unlock(&mm->page_table_lock);
+	if (newlimit == end) {
+		struct vm_area_struct *vma = find_vma(mm, oldlimit);
+
+		for (; vma && vma->vm_start < end; vma = vma->vm_next)
+			if (is_vm_hugetlb_page(vma))
+				hugetlb_change_protection(vma, vma->vm_start, vma->vm_end, vma->vm_page_prot);
+			else
+				change_protection(vma, vma->vm_start, vma->vm_end, vma->vm_page_prot, vma_wants_writenotify(vma), 0);
+	}
+}
+#endif
+
 int
 mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
 	unsigned long start, unsigned long end, unsigned long newflags)
@@ -268,11 +318,29 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
 	int error;
 	int dirty_accountable = 0;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct vm_area_struct *vma_m = NULL;
+	unsigned long start_m, end_m;
+
+	start_m = start + SEGMEXEC_TASK_SIZE;
+	end_m = end + SEGMEXEC_TASK_SIZE;
+#endif
+
 	if (newflags == oldflags) {
 		*pprev = vma;
 		return 0;
 	}
 
+	if (newflags & (VM_READ | VM_WRITE | VM_EXEC)) {
+		struct vm_area_struct *prev = vma->vm_prev, *next = vma->vm_next;
+
+		if (next && (next->vm_flags & VM_GROWSDOWN) && sysctl_heap_stack_gap > next->vm_start - end)
+			return -ENOMEM;
+
+		if (prev && (prev->vm_flags & VM_GROWSUP) && sysctl_heap_stack_gap > start - prev->vm_end)
+			return -ENOMEM;
+	}
+
 	/*
 	 * If we make a private mapping writable we increase our commit;
 	 * but (without finer accounting) cannot reduce our commit if we
@@ -289,6 +357,42 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
 		}
 	}
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && ((oldflags ^ newflags) & VM_EXEC)) {
+		if (start != vma->vm_start) {
+			error = split_vma(mm, vma, start, 1);
+			if (error)
+				goto fail;
+			BUG_ON(!*pprev || (*pprev)->vm_next == vma);
+			*pprev = (*pprev)->vm_next;
+		}
+
+		if (end != vma->vm_end) {
+			error = split_vma(mm, vma, end, 0);
+			if (error)
+				goto fail;
+		}
+
+		if (pax_find_mirror_vma(vma)) {
+			error = __do_munmap(mm, start_m, end_m - start_m);
+			if (error)
+				goto fail;
+		} else {
+			vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
+			if (!vma_m) {
+				error = -ENOMEM;
+				goto fail;
+			}
+			vma->vm_flags = newflags;
+			error = pax_mirror_vma(vma_m, vma);
+			if (error) {
+				vma->vm_flags = oldflags;
+				goto fail;
+			}
+		}
+	}
+#endif
+
 	/*
 	 * First try to merge with previous and/or next vma.
 	 */
@@ -319,9 +423,21 @@ success:
 	 * vm_flags and vm_page_prot are protected by the mmap_sem
 	 * held in write mode.
 	 */
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (newflags & VM_EXEC) && ((vma->vm_flags ^ newflags) & VM_READ))
+		pax_find_mirror_vma(vma)->vm_flags ^= VM_READ;
+#endif
+
 	vma->vm_flags = newflags;
+
+#ifdef CONFIG_PAX_MPROTECT
+	if (mm->binfmt && mm->binfmt->handle_mprotect)
+		mm->binfmt->handle_mprotect(vma, newflags);
+#endif
+
 	vma->vm_page_prot = pgprot_modify(vma->vm_page_prot,
-					  vm_get_page_prot(newflags));
+					  vm_get_page_prot(vma->vm_flags));
 
 	if (vma_wants_writenotify(vma)) {
 		vma->vm_page_prot = vm_get_page_prot(newflags & ~VM_SHARED);
@@ -360,6 +476,17 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
 	end = start + len;
 	if (end <= start)
 		return -ENOMEM;
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (current->mm->pax_flags & MF_PAX_SEGMEXEC) {
+		if (end > SEGMEXEC_TASK_SIZE)
+			return -EINVAL;
+	} else
+#endif
+
+	if (end > TASK_SIZE)
+		return -EINVAL;
+
 	if (!arch_validate_prot(prot))
 		return -EINVAL;
 
@@ -367,7 +494,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
 	/*
 	 * Does the application expect PROT_READ to imply PROT_EXEC:
 	 */
-	if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC))
+	if ((prot & (PROT_READ | PROT_WRITE)) && (current->personality & READ_IMPLIES_EXEC))
 		prot |= PROT_EXEC;
 
 	vm_flags = calc_vm_prot_bits(prot);
@@ -399,6 +526,11 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
 	if (start > vma->vm_start)
 		prev = vma;
 
+#ifdef CONFIG_PAX_MPROTECT
+	if (current->mm->binfmt && current->mm->binfmt->handle_mprotect)
+		current->mm->binfmt->handle_mprotect(vma, vm_flags);
+#endif
+
 	for (nstart = start ; ; ) {
 		unsigned long newflags;
 
@@ -409,6 +541,14 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
 
 		/* newflags >> 4 shift VM_MAY% in place of VM_% */
 		if ((newflags & ~(newflags >> 4)) & (VM_READ | VM_WRITE | VM_EXEC)) {
+			if (prot & (PROT_WRITE | PROT_EXEC))
+				gr_log_rwxmprotect(vma);
+
+			error = -EACCES;
+			goto out;
+		}
+
+		if (!gr_acl_handle_mprotect(vma->vm_file, prot)) {
 			error = -EACCES;
 			goto out;
 		}
@@ -423,6 +563,9 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
 		error = mprotect_fixup(vma, &prev, nstart, tmp, newflags);
 		if (error)
 			goto out;
+
+		track_exec_limit(current->mm, nstart, tmp, vm_flags);
+
 		nstart = tmp;
 
 		if (nstart < prev->vm_end)
diff --git a/mm/mremap.c b/mm/mremap.c
index 05f1180..c3cde48 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -144,6 +144,12 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
 			continue;
 		pte = ptep_get_and_clear(mm, old_addr, old_pte);
 		pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr);
+
+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
+		if (!(__supported_pte_mask & _PAGE_NX) && pte_present(pte) && (new_vma->vm_flags & (VM_PAGEEXEC | VM_EXEC)) == VM_PAGEEXEC)
+			pte = pte_exprotect(pte);
+#endif
+
 		pte = move_soft_dirty_pte(pte);
 		set_pte_at(mm, new_addr, new_pte, pte);
 	}
@@ -344,6 +350,11 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
 	if (is_vm_hugetlb_page(vma))
 		goto Einval;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (pax_find_mirror_vma(vma))
+		goto Einval;
+#endif
+
 	/* We can't remap across vm area boundaries */
 	if (old_len > vma->vm_end - addr)
 		goto Efault;
@@ -399,20 +410,25 @@ static unsigned long mremap_to(unsigned long addr, unsigned long old_len,
 	unsigned long ret = -EINVAL;
 	unsigned long charged = 0;
 	unsigned long map_flags;
+	unsigned long pax_task_size = TASK_SIZE;
 
 	if (new_addr & ~PAGE_MASK)
 		goto out;
 
-	if (new_len > TASK_SIZE || new_addr > TASK_SIZE - new_len)
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	if (new_len > TASK_SIZE || new_addr > pax_task_size - new_len)
 		goto out;
 
 	/* Check if the location we're moving into overlaps the
 	 * old location at all, and fail if it does.
 	 */
-	if ((new_addr <= addr) && (new_addr+new_len) > addr)
-		goto out;
-
-	if ((addr <= new_addr) && (addr+old_len) > new_addr)
+	if (addr + old_len > new_addr && new_addr + new_len > addr)
 		goto out;
 
 	ret = do_munmap(mm, new_addr, new_len);
@@ -481,6 +497,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
 	unsigned long ret = -EINVAL;
 	unsigned long charged = 0;
 	bool locked = false;
+	unsigned long pax_task_size = TASK_SIZE;
 
 	if (flags & ~(MREMAP_FIXED | MREMAP_MAYMOVE))
 		return ret;
@@ -502,6 +519,17 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
 	if (!new_len)
 		return ret;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (mm->pax_flags & MF_PAX_SEGMEXEC)
+		pax_task_size = SEGMEXEC_TASK_SIZE;
+#endif
+
+	pax_task_size -= PAGE_SIZE;
+
+	if (new_len > pax_task_size || addr > pax_task_size-new_len ||
+	    old_len > pax_task_size || addr > pax_task_size-old_len)
+		return ret;
+
 	down_write(&current->mm->mmap_sem);
 
 	if (flags & MREMAP_FIXED) {
@@ -552,6 +580,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
 				new_addr = addr;
 			}
 			ret = addr;
+			track_exec_limit(vma->vm_mm, vma->vm_start, addr + new_len, vma->vm_flags);
 			goto out;
 		}
 	}
@@ -575,7 +604,12 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
 			goto out;
 		}
 
+		map_flags = vma->vm_flags;
 		ret = move_vma(vma, addr, old_len, new_len, new_addr, &locked);
+		if (!(ret & ~PAGE_MASK)) {
+			track_exec_limit(current->mm, addr, addr + old_len, 0UL);
+			track_exec_limit(current->mm, new_addr, new_addr + new_len, map_flags);
+		}
 	}
 out:
 	if (ret & ~PAGE_MASK)
diff --git a/mm/nommu.c b/mm/nommu.c
index 4a852f6..4371a6b 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -70,7 +70,6 @@ int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
 int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS;
 unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */
 unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */
-int heap_stack_gap = 0;
 
 atomic_long_t mmap_pages_allocated;
 
@@ -857,15 +856,6 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr)
 EXPORT_SYMBOL(find_vma);
 
 /*
- * find a VMA
- * - we don't extend stack VMAs under NOMMU conditions
- */
-struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr)
-{
-	return find_vma(mm, addr);
-}
-
-/*
  * expand a stack to a given address
  * - not supported under NOMMU conditions
  */
@@ -1572,6 +1562,7 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
 
 	/* most fields are the same, copy all, and then fixup */
 	*new = *vma;
+	INIT_LIST_HEAD(&new->anon_vma_chain);
 	*region = *vma->vm_region;
 	new->vm_region = region;
 
@@ -2007,8 +1998,8 @@ int generic_file_remap_pages(struct vm_area_struct *vma, unsigned long addr,
 }
 EXPORT_SYMBOL(generic_file_remap_pages);
 
-static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
-		unsigned long addr, void *buf, int len, int write)
+static ssize_t __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
+		unsigned long addr, void *buf, size_t len, int write)
 {
 	struct vm_area_struct *vma;
 
@@ -2049,8 +2040,8 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
  *
  * The caller must hold a reference on @mm.
  */
-int access_remote_vm(struct mm_struct *mm, unsigned long addr,
-		void *buf, int len, int write)
+ssize_t access_remote_vm(struct mm_struct *mm, unsigned long addr,
+		void *buf, size_t len, int write)
 {
 	return __access_remote_vm(NULL, mm, addr, buf, len, write);
 }
@@ -2059,7 +2050,7 @@ int access_remote_vm(struct mm_struct *mm, unsigned long addr,
  * Access another process' address space.
  * - source/target buffer must be kernel space
  */
-int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
+ssize_t access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, size_t len, int write)
 {
 	struct mm_struct *mm;
 
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index e0c9430..3c6bf79 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -667,7 +667,7 @@ static long long pos_ratio_polynom(unsigned long setpoint,
  *   card's bdi_dirty may rush to many times higher than bdi_setpoint.
  * - the bdi dirty thresh drops quickly due to change of JBOD workload
  */
-static unsigned long bdi_position_ratio(struct backing_dev_info *bdi,
+static unsigned long __intentional_overflow(-1) bdi_position_ratio(struct backing_dev_info *bdi,
 					unsigned long thresh,
 					unsigned long bg_thresh,
 					unsigned long dirty,
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index ef44ad7..1056bc7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -61,6 +61,7 @@
 #include <linux/page-debug-flags.h>
 #include <linux/hugetlb.h>
 #include <linux/sched/rt.h>
+#include <linux/random.h>
 
 #include <asm/sections.h>
 #include <asm/tlbflush.h>
@@ -357,7 +358,7 @@ out:
  * This usage means that zero-order pages may not be compound.
  */
 
-static void free_compound_page(struct page *page)
+void free_compound_page(struct page *page)
 {
 	__free_pages_ok(page, compound_order(page));
 }
@@ -745,6 +746,10 @@ static bool free_pages_prepare(struct page *page, unsigned int order)
 	int i;
 	int bad = 0;
 
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	unsigned long index = 1UL << order;
+#endif
+
 	trace_mm_page_free(page, order);
 	kmemcheck_free_shadow(page, order);
 
@@ -761,6 +766,12 @@ static bool free_pages_prepare(struct page *page, unsigned int order)
 		debug_check_no_obj_freed(page_address(page),
 					   PAGE_SIZE << order);
 	}
+
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	for (; index; --index)
+		sanitize_highpage(page + index - 1);
+#endif
+
 	arch_free_page(page, order);
 	kernel_map_pages(page, 1 << order, 0);
 
@@ -784,6 +795,20 @@ static void __free_pages_ok(struct page *page, unsigned int order)
 	local_irq_restore(flags);
 }
 
+#ifdef CONFIG_PAX_LATENT_ENTROPY
+bool __meminitdata extra_latent_entropy;
+
+static int __init setup_pax_extra_latent_entropy(char *str)
+{
+	extra_latent_entropy = true;
+	return 0;
+}
+early_param("pax_extra_latent_entropy", setup_pax_extra_latent_entropy);
+
+volatile u64 latent_entropy __latent_entropy;
+EXPORT_SYMBOL(latent_entropy);
+#endif
+
 void __init __free_pages_bootmem(struct page *page, unsigned int order)
 {
 	unsigned int nr_pages = 1 << order;
@@ -799,6 +824,19 @@ void __init __free_pages_bootmem(struct page *page, unsigned int order)
 	__ClearPageReserved(p);
 	set_page_count(p, 0);
 
+#ifdef CONFIG_PAX_LATENT_ENTROPY
+	if (extra_latent_entropy && !PageHighMem(page) && page_to_pfn(page) < 0x100000) {
+		u64 hash = 0;
+		size_t index, end = PAGE_SIZE * nr_pages / sizeof hash;
+		const u64 *data = lowmem_page_address(page);
+
+		for (index = 0; index < end; index++)
+			hash ^= hash + data[index];
+		latent_entropy ^= hash;
+		add_device_randomness((const void *)&latent_entropy, sizeof(latent_entropy));
+	}
+#endif
+
 	page_zone(page)->managed_pages += nr_pages;
 	set_page_refcounted(page);
 	__free_pages(page, order);
@@ -927,8 +965,10 @@ static int prep_new_page(struct page *page, unsigned int order, gfp_t gfp_flags)
 	arch_alloc_page(page, order);
 	kernel_map_pages(page, 1 << order, 1);
 
+#ifndef CONFIG_PAX_MEMORY_SANITIZE
 	if (gfp_flags & __GFP_ZERO)
 		prep_zero_page(page, order, gfp_flags);
+#endif
 
 	if (order && (gfp_flags & __GFP_COMP))
 		prep_compound_page(page, order);
@@ -2427,7 +2467,7 @@ static void reset_alloc_batches(struct zonelist *zonelist,
 			continue;
 		mod_zone_page_state(zone, NR_ALLOC_BATCH,
 			high_wmark_pages(zone) - low_wmark_pages(zone) -
-			atomic_long_read(&zone->vm_stat[NR_ALLOC_BATCH]));
+			atomic_long_read_unchecked(&zone->vm_stat[NR_ALLOC_BATCH]));
 	}
 }
 
diff --git a/mm/percpu.c b/mm/percpu.c
index 2ddf9a9..f8fc075 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -123,7 +123,7 @@ static unsigned int pcpu_low_unit_cpu __read_mostly;
 static unsigned int pcpu_high_unit_cpu __read_mostly;
 
 /* the address of the first chunk which starts with the kernel static area */
-void *pcpu_base_addr __read_mostly;
+void *pcpu_base_addr __read_only;
 EXPORT_SYMBOL_GPL(pcpu_base_addr);
 
 static const int *pcpu_unit_map __read_mostly;		/* cpu -> unit */
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index a8b9199..dfb79e0 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -195,7 +195,7 @@ void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
 	pmd_t entry = *pmdp;
 	if (pmd_numa(entry))
 		entry = pmd_mknonnuma(entry);
-	set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(*pmdp));
+	set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(entry));
 	flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
index 5077afc..846c9ef 100644
--- a/mm/process_vm_access.c
+++ b/mm/process_vm_access.c
@@ -13,6 +13,7 @@
 #include <linux/uio.h>
 #include <linux/sched.h>
 #include <linux/highmem.h>
+#include <linux/security.h>
 #include <linux/ptrace.h>
 #include <linux/slab.h>
 #include <linux/syscalls.h>
@@ -157,19 +158,19 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter,
 	ssize_t iov_len;
 	size_t total_len = iov_iter_count(iter);
 
+	return -ENOSYS; // PaX: until properly audited
+
 	/*
 	 * Work out how many pages of struct pages we're going to need
 	 * when eventually calling get_user_pages
 	 */
 	for (i = 0; i < riovcnt; i++) {
 		iov_len = rvec[i].iov_len;
-		if (iov_len > 0) {
-			nr_pages_iov = ((unsigned long)rvec[i].iov_base
-					+ iov_len)
-				/ PAGE_SIZE - (unsigned long)rvec[i].iov_base
-				/ PAGE_SIZE + 1;
-			nr_pages = max(nr_pages, nr_pages_iov);
-		}
+		if (iov_len <= 0)
+			continue;
+		nr_pages_iov = ((unsigned long)rvec[i].iov_base + iov_len) / PAGE_SIZE -
+				(unsigned long)rvec[i].iov_base / PAGE_SIZE + 1;
+		nr_pages = max(nr_pages, nr_pages_iov);
 	}
 
 	if (nr_pages == 0)
@@ -197,6 +198,11 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter,
 		goto free_proc_pages;
 	}
 
+	if (gr_handle_ptrace(task, vm_write ? PTRACE_POKETEXT : PTRACE_ATTACH)) {
+		rc = -EPERM;
+		goto put_task_struct;
+	}
+
 	mm = mm_access(task, PTRACE_MODE_ATTACH);
 	if (!mm || IS_ERR(mm)) {
 		rc = IS_ERR(mm) ? PTR_ERR(mm) : -ESRCH;
diff --git a/mm/rmap.c b/mm/rmap.c
index 22a4a76..9551288 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -164,6 +164,10 @@ int anon_vma_prepare(struct vm_area_struct *vma)
 	struct anon_vma *anon_vma = vma->anon_vma;
 	struct anon_vma_chain *avc;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+	struct anon_vma_chain *avc_m = NULL;
+#endif
+
 	might_sleep();
 	if (unlikely(!anon_vma)) {
 		struct mm_struct *mm = vma->vm_mm;
@@ -173,6 +177,12 @@ int anon_vma_prepare(struct vm_area_struct *vma)
 		if (!avc)
 			goto out_enomem;
 
+#ifdef CONFIG_PAX_SEGMEXEC
+		avc_m = anon_vma_chain_alloc(GFP_KERNEL);
+		if (!avc_m)
+			goto out_enomem_free_avc;
+#endif
+
 		anon_vma = find_mergeable_anon_vma(vma);
 		allocated = NULL;
 		if (!anon_vma) {
@@ -186,6 +196,18 @@ int anon_vma_prepare(struct vm_area_struct *vma)
 		/* page_table_lock to protect against threads */
 		spin_lock(&mm->page_table_lock);
 		if (likely(!vma->anon_vma)) {
+
+#ifdef CONFIG_PAX_SEGMEXEC
+			struct vm_area_struct *vma_m = pax_find_mirror_vma(vma);
+
+			if (vma_m) {
+				BUG_ON(vma_m->anon_vma);
+				vma_m->anon_vma = anon_vma;
+				anon_vma_chain_link(vma_m, avc_m, anon_vma);
+				avc_m = NULL;
+			}
+#endif
+
 			vma->anon_vma = anon_vma;
 			anon_vma_chain_link(vma, avc, anon_vma);
 			allocated = NULL;
@@ -196,12 +218,24 @@ int anon_vma_prepare(struct vm_area_struct *vma)
 
 		if (unlikely(allocated))
 			put_anon_vma(allocated);
+
+#ifdef CONFIG_PAX_SEGMEXEC
+		if (unlikely(avc_m))
+			anon_vma_chain_free(avc_m);
+#endif
+
 		if (unlikely(avc))
 			anon_vma_chain_free(avc);
 	}
 	return 0;
 
  out_enomem_free_avc:
+
+#ifdef CONFIG_PAX_SEGMEXEC
+	if (avc_m)
+		anon_vma_chain_free(avc_m);
+#endif
+
 	anon_vma_chain_free(avc);
  out_enomem:
 	return -ENOMEM;
@@ -237,7 +271,7 @@ static inline void unlock_anon_vma_root(struct anon_vma *root)
  * Attach the anon_vmas from src to dst.
  * Returns 0 on success, -ENOMEM on failure.
  */
-int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src)
+int anon_vma_clone(struct vm_area_struct *dst, const struct vm_area_struct *src)
 {
 	struct anon_vma_chain *avc, *pavc;
 	struct anon_vma *root = NULL;
@@ -270,7 +304,7 @@ int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src)
  * the corresponding VMA in the parent process is attached to.
  * Returns 0 on success, non-zero on failure.
  */
-int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma)
+int anon_vma_fork(struct vm_area_struct *vma, const struct vm_area_struct *pvma)
 {
 	struct anon_vma_chain *avc;
 	struct anon_vma *anon_vma;
@@ -374,8 +408,10 @@ static void anon_vma_ctor(void *data)
 void __init anon_vma_init(void)
 {
 	anon_vma_cachep = kmem_cache_create("anon_vma", sizeof(struct anon_vma),
-			0, SLAB_DESTROY_BY_RCU|SLAB_PANIC, anon_vma_ctor);
-	anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain, SLAB_PANIC);
+			0, SLAB_DESTROY_BY_RCU|SLAB_PANIC|SLAB_NO_SANITIZE,
+			anon_vma_ctor);
+	anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain,
+			SLAB_PANIC|SLAB_NO_SANITIZE);
 }
 
 /*
diff --git a/mm/shmem.c b/mm/shmem.c
index af68b15..1227320 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -33,7 +33,7 @@
 #include <linux/swap.h>
 #include <linux/aio.h>
 
-static struct vfsmount *shm_mnt;
+struct vfsmount *shm_mnt;
 
 #ifdef CONFIG_SHMEM
 /*
@@ -77,7 +77,7 @@ static struct vfsmount *shm_mnt;
 #define BOGO_DIRENT_SIZE 20
 
 /* Symlink up to this size is kmalloc'ed instead of using a swappable page */
-#define SHORT_SYMLINK_LEN 128
+#define SHORT_SYMLINK_LEN 64
 
 /*
  * shmem_fallocate communicates with shmem_fault or shmem_writepage via
@@ -2219,6 +2219,11 @@ static const struct xattr_handler *shmem_xattr_handlers[] = {
 static int shmem_xattr_validate(const char *name)
 {
 	struct { const char *prefix; size_t len; } arr[] = {
+
+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
+		{ XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN},
+#endif
+
 		{ XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN },
 		{ XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN }
 	};
@@ -2274,6 +2279,15 @@ static int shmem_setxattr(struct dentry *dentry, const char *name,
 	if (err)
 		return err;
 
+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
+	if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) {
+		if (strcmp(name, XATTR_NAME_PAX_FLAGS))
+			return -EOPNOTSUPP;
+		if (size > 8)
+			return -EINVAL;
+	}
+#endif
+
 	return simple_xattr_set(&info->xattrs, name, value, size, flags);
 }
 
@@ -2586,8 +2600,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent)
 	int err = -ENOMEM;
 
 	/* Round up to L1_CACHE_BYTES to resist false sharing */
-	sbinfo = kzalloc(max((int)sizeof(struct shmem_sb_info),
-				L1_CACHE_BYTES), GFP_KERNEL);
+	sbinfo = kzalloc(max(sizeof(struct shmem_sb_info), L1_CACHE_BYTES), GFP_KERNEL);
 	if (!sbinfo)
 		return -ENOMEM;
 
diff --git a/mm/slab.c b/mm/slab.c
index 3070b92..bcfff83 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -311,10 +311,12 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent)
 		if ((x)->max_freeable < i)				\
 			(x)->max_freeable = i;				\
 	} while (0)
-#define STATS_INC_ALLOCHIT(x)	atomic_inc(&(x)->allochit)
-#define STATS_INC_ALLOCMISS(x)	atomic_inc(&(x)->allocmiss)
-#define STATS_INC_FREEHIT(x)	atomic_inc(&(x)->freehit)
-#define STATS_INC_FREEMISS(x)	atomic_inc(&(x)->freemiss)
+#define STATS_INC_ALLOCHIT(x)	atomic_inc_unchecked(&(x)->allochit)
+#define STATS_INC_ALLOCMISS(x)	atomic_inc_unchecked(&(x)->allocmiss)
+#define STATS_INC_FREEHIT(x)	atomic_inc_unchecked(&(x)->freehit)
+#define STATS_INC_FREEMISS(x)	atomic_inc_unchecked(&(x)->freemiss)
+#define STATS_INC_SANITIZED(x)	atomic_inc_unchecked(&(x)->sanitized)
+#define STATS_INC_NOT_SANITIZED(x) atomic_inc_unchecked(&(x)->not_sanitized)
 #else
 #define	STATS_INC_ACTIVE(x)	do { } while (0)
 #define	STATS_DEC_ACTIVE(x)	do { } while (0)
@@ -331,6 +333,8 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent)
 #define STATS_INC_ALLOCMISS(x)	do { } while (0)
 #define STATS_INC_FREEHIT(x)	do { } while (0)
 #define STATS_INC_FREEMISS(x)	do { } while (0)
+#define STATS_INC_SANITIZED(x)	do { } while (0)
+#define STATS_INC_NOT_SANITIZED(x) do { } while (0)
 #endif
 
 #if DEBUG
@@ -447,7 +451,7 @@ static inline void *index_to_obj(struct kmem_cache *cache, struct page *page,
  *   reciprocal_divide(offset, cache->reciprocal_buffer_size)
  */
 static inline unsigned int obj_to_index(const struct kmem_cache *cache,
-					const struct page *page, void *obj)
+					const struct page *page, const void *obj)
 {
 	u32 offset = (obj - page->s_mem);
 	return reciprocal_divide(offset, cache->reciprocal_buffer_size);
@@ -1558,12 +1562,12 @@ void __init kmem_cache_init(void)
 	 */
 
 	kmalloc_caches[INDEX_AC] = create_kmalloc_cache("kmalloc-ac",
-					kmalloc_size(INDEX_AC), ARCH_KMALLOC_FLAGS);
+					kmalloc_size(INDEX_AC), SLAB_USERCOPY | ARCH_KMALLOC_FLAGS);
 
 	if (INDEX_AC != INDEX_NODE)
 		kmalloc_caches[INDEX_NODE] =
 			create_kmalloc_cache("kmalloc-node",
-				kmalloc_size(INDEX_NODE), ARCH_KMALLOC_FLAGS);
+				kmalloc_size(INDEX_NODE), SLAB_USERCOPY | ARCH_KMALLOC_FLAGS);
 
 	slab_early_init = 0;
 
@@ -3512,6 +3516,21 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp,
 	struct array_cache *ac = cpu_cache_get(cachep);
 
 	check_irq_off();
+
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	if (pax_sanitize_slab) {
+		if (!(cachep->flags & (SLAB_POISON | SLAB_NO_SANITIZE))) {
+			memset(objp, PAX_MEMORY_SANITIZE_VALUE, cachep->object_size);
+
+			if (cachep->ctor)
+				cachep->ctor(objp);
+
+			STATS_INC_SANITIZED(cachep);
+		} else
+			STATS_INC_NOT_SANITIZED(cachep);
+	}
+#endif
+
 	kmemleak_free_recursive(objp, cachep->flags);
 	objp = cache_free_debugcheck(cachep, objp, caller);
 
@@ -3735,6 +3754,7 @@ void kfree(const void *objp)
 
 	if (unlikely(ZERO_OR_NULL_PTR(objp)))
 		return;
+	VM_BUG_ON(!virt_addr_valid(objp));
 	local_irq_save(flags);
 	kfree_debugcheck(objp);
 	c = virt_to_cache(objp);
@@ -4176,14 +4196,22 @@ void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep)
 	}
 	/* cpu stats */
 	{
-		unsigned long allochit = atomic_read(&cachep->allochit);
-		unsigned long allocmiss = atomic_read(&cachep->allocmiss);
-		unsigned long freehit = atomic_read(&cachep->freehit);
-		unsigned long freemiss = atomic_read(&cachep->freemiss);
+		unsigned long allochit = atomic_read_unchecked(&cachep->allochit);
+		unsigned long allocmiss = atomic_read_unchecked(&cachep->allocmiss);
+		unsigned long freehit = atomic_read_unchecked(&cachep->freehit);
+		unsigned long freemiss = atomic_read_unchecked(&cachep->freemiss);
 
 		seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu",
 			   allochit, allocmiss, freehit, freemiss);
 	}
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	{
+		unsigned long sanitized = atomic_read_unchecked(&cachep->sanitized);
+		unsigned long not_sanitized = atomic_read_unchecked(&cachep->not_sanitized);
+
+		seq_printf(m, " : pax %6lu %6lu", sanitized, not_sanitized);
+	}
+#endif
 #endif
 }
 
@@ -4404,13 +4432,69 @@ static const struct file_operations proc_slabstats_operations = {
 static int __init slab_proc_init(void)
 {
 #ifdef CONFIG_DEBUG_SLAB_LEAK
-	proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations);
+	proc_create("slab_allocators", S_IRUSR, NULL, &proc_slabstats_operations);
 #endif
 	return 0;
 }
 module_init(slab_proc_init);
 #endif
 
+bool is_usercopy_object(const void *ptr)
+{
+	struct page *page;
+	struct kmem_cache *cachep;
+
+	if (ZERO_OR_NULL_PTR(ptr))
+		return false;
+
+	if (!slab_is_available())
+		return false;
+
+	if (!virt_addr_valid(ptr))
+		return false;
+
+	page = virt_to_head_page(ptr);
+
+	if (!PageSlab(page))
+		return false;
+
+	cachep = page->slab_cache;
+	return cachep->flags & SLAB_USERCOPY;
+}
+
+#ifdef CONFIG_PAX_USERCOPY
+const char *check_heap_object(const void *ptr, unsigned long n)
+{
+	struct page *page;
+	struct kmem_cache *cachep;
+	unsigned int objnr;
+	unsigned long offset;
+
+	if (ZERO_OR_NULL_PTR(ptr))
+		return "<null>";
+
+	if (!virt_addr_valid(ptr))
+		return NULL;
+
+	page = virt_to_head_page(ptr);
+
+	if (!PageSlab(page))
+		return NULL;
+
+	cachep = page->slab_cache;
+	if (!(cachep->flags & SLAB_USERCOPY))
+		return cachep->name;
+
+	objnr = obj_to_index(cachep, page, ptr);
+	BUG_ON(objnr >= cachep->num);
+	offset = ptr - index_to_obj(cachep, page, objnr) - obj_offset(cachep);
+	if (offset <= cachep->object_size && n <= cachep->object_size - offset)
+		return NULL;
+
+	return cachep->name;
+}
+#endif
+
 /**
  * ksize - get the actual amount of memory allocated for a given object
  * @objp: Pointer to the object
diff --git a/mm/slab.h b/mm/slab.h
index 961a3fb..6b12514 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -32,6 +32,15 @@ extern struct list_head slab_caches;
 /* The slab cache that manages slab cache information */
 extern struct kmem_cache *kmem_cache;
 
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+#ifdef CONFIG_X86_64
+#define PAX_MEMORY_SANITIZE_VALUE	'\xfe'
+#else
+#define PAX_MEMORY_SANITIZE_VALUE	'\xff'
+#endif
+extern bool pax_sanitize_slab;
+#endif
+
 unsigned long calculate_alignment(unsigned long flags,
 		unsigned long align, unsigned long size);
 
@@ -67,7 +76,8 @@ __kmem_cache_alias(const char *name, size_t size, size_t align,
 
 /* Legal flag mask for kmem_cache_create(), for various configurations */
 #define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \
-			 SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS )
+			 SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS | \
+			 SLAB_USERCOPY | SLAB_NO_SANITIZE)
 
 #if defined(CONFIG_DEBUG_SLAB)
 #define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER)
@@ -251,6 +261,9 @@ static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x)
 		return s;
 
 	page = virt_to_head_page(x);
+
+	BUG_ON(!PageSlab(page));
+
 	cachep = page->slab_cache;
 	if (slab_equal_or_root(cachep, s))
 		return cachep;
diff --git a/mm/slab_common.c b/mm/slab_common.c
index d31c4ba..1121296 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -23,11 +23,22 @@
 
 #include "slab.h"
 
-enum slab_state slab_state;
+enum slab_state slab_state __read_only;
 LIST_HEAD(slab_caches);
 DEFINE_MUTEX(slab_mutex);
 struct kmem_cache *kmem_cache;
 
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+bool pax_sanitize_slab __read_only = true;
+static int __init pax_sanitize_slab_setup(char *str)
+{
+	pax_sanitize_slab = !!simple_strtol(str, NULL, 0);
+	printk("%sabled PaX slab sanitization\n", pax_sanitize_slab ? "En" : "Dis");
+	return 1;
+}
+__setup("pax_sanitize_slab=", pax_sanitize_slab_setup);
+#endif
+
 #ifdef CONFIG_DEBUG_VM
 static int kmem_cache_sanity_check(const char *name, size_t size)
 {
@@ -158,7 +169,7 @@ do_kmem_cache_create(char *name, size_t object_size, size_t size, size_t align,
 	if (err)
 		goto out_free_cache;
 
-	s->refcount = 1;
+	atomic_set(&s->refcount, 1);
 	list_add(&s->list, &slab_caches);
 out:
 	if (err)
@@ -339,8 +350,7 @@ void kmem_cache_destroy(struct kmem_cache *s)
 
 	mutex_lock(&slab_mutex);
 
-	s->refcount--;
-	if (s->refcount)
+	if (!atomic_dec_and_test(&s->refcount))
 		goto out_unlock;
 
 	if (memcg_cleanup_cache_params(s) != 0)
@@ -360,7 +370,7 @@ void kmem_cache_destroy(struct kmem_cache *s)
 		rcu_barrier();
 
 	memcg_free_cache_params(s);
-#ifdef SLAB_SUPPORTS_SYSFS
+#if defined(SLAB_SUPPORTS_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 	sysfs_slab_remove(s);
 #else
 	slab_kmem_cache_release(s);
@@ -416,7 +426,7 @@ void __init create_boot_cache(struct kmem_cache *s, const char *name, size_t siz
 		panic("Creation of kmalloc slab %s size=%zu failed. Reason %d\n",
 					name, size, err);
 
-	s->refcount = -1;	/* Exempt from merging for now */
+	atomic_set(&s->refcount, -1);	/* Exempt from merging for now */
 }
 
 struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size,
@@ -429,7 +439,7 @@ struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size,
 
 	create_boot_cache(s, name, size, flags);
 	list_add(&s->list, &slab_caches);
-	s->refcount = 1;
+	atomic_set(&s->refcount, 1);
 	return s;
 }
 
@@ -441,6 +451,11 @@ struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
 EXPORT_SYMBOL(kmalloc_dma_caches);
 #endif
 
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+struct kmem_cache *kmalloc_usercopy_caches[KMALLOC_SHIFT_HIGH + 1];
+EXPORT_SYMBOL(kmalloc_usercopy_caches);
+#endif
+
 /*
  * Conversion table for small slabs sizes / 8 to the index in the
  * kmalloc array. This is necessary for slabs < 192 since we have non power
@@ -505,6 +520,13 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags)
 		return kmalloc_dma_caches[index];
 
 #endif
+
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+	if (unlikely((flags & GFP_USERCOPY)))
+		return kmalloc_usercopy_caches[index];
+
+#endif
+
 	return kmalloc_caches[index];
 }
 
@@ -561,7 +583,7 @@ void __init create_kmalloc_caches(unsigned long flags)
 	for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++) {
 		if (!kmalloc_caches[i]) {
 			kmalloc_caches[i] = create_kmalloc_cache(NULL,
-							1 << i, flags);
+							1 << i, SLAB_USERCOPY | flags);
 		}
 
 		/*
@@ -570,10 +592,10 @@ void __init create_kmalloc_caches(unsigned long flags)
 		 * earlier power of two caches
 		 */
 		if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[1] && i == 6)
-			kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, flags);
+			kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, SLAB_USERCOPY | flags);
 
 		if (KMALLOC_MIN_SIZE <= 64 && !kmalloc_caches[2] && i == 7)
-			kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, flags);
+			kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, SLAB_USERCOPY | flags);
 	}
 
 	/* Kmalloc array is now usable */
@@ -606,6 +628,23 @@ void __init create_kmalloc_caches(unsigned long flags)
 		}
 	}
 #endif
+
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+	for (i = 0; i <= KMALLOC_SHIFT_HIGH; i++) {
+		struct kmem_cache *s = kmalloc_caches[i];
+
+		if (s) {
+			int size = kmalloc_size(i);
+			char *n = kasprintf(GFP_NOWAIT,
+				 "usercopy-kmalloc-%d", size);
+
+			BUG_ON(!n);
+			kmalloc_usercopy_caches[i] = create_kmalloc_cache(n,
+				size, SLAB_USERCOPY | flags);
+		}
+	}
+#endif
+
 }
 #endif /* !CONFIG_SLOB */
 
@@ -664,6 +703,9 @@ void print_slabinfo_header(struct seq_file *m)
 	seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> "
 		 "<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>");
 	seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>");
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	seq_puts(m, " : pax <sanitized> <not_sanitized>");
+#endif
 #endif
 	seq_putc(m, '\n');
 }
diff --git a/mm/slob.c b/mm/slob.c
index 21980e0..ed9a648 100644
--- a/mm/slob.c
+++ b/mm/slob.c
@@ -157,7 +157,7 @@ static void set_slob(slob_t *s, slobidx_t size, slob_t *next)
 /*
  * Return the size of a slob block.
  */
-static slobidx_t slob_units(slob_t *s)
+static slobidx_t slob_units(const slob_t *s)
 {
 	if (s->units > 0)
 		return s->units;
@@ -167,7 +167,7 @@ static slobidx_t slob_units(slob_t *s)
 /*
  * Return the next free slob block pointer after this one.
  */
-static slob_t *slob_next(slob_t *s)
+static slob_t *slob_next(const slob_t *s)
 {
 	slob_t *base = (slob_t *)((unsigned long)s & PAGE_MASK);
 	slobidx_t next;
@@ -182,14 +182,14 @@ static slob_t *slob_next(slob_t *s)
 /*
  * Returns true if s is the last free block in its page.
  */
-static int slob_last(slob_t *s)
+static int slob_last(const slob_t *s)
 {
 	return !((unsigned long)slob_next(s) & ~PAGE_MASK);
 }
 
-static void *slob_new_pages(gfp_t gfp, int order, int node)
+static struct page *slob_new_pages(gfp_t gfp, unsigned int order, int node)
 {
-	void *page;
+	struct page *page;
 
 #ifdef CONFIG_NUMA
 	if (node != NUMA_NO_NODE)
@@ -201,14 +201,18 @@ static void *slob_new_pages(gfp_t gfp, int order, int node)
 	if (!page)
 		return NULL;
 
-	return page_address(page);
+	__SetPageSlab(page);
+	return page;
 }
 
-static void slob_free_pages(void *b, int order)
+static void slob_free_pages(struct page *sp, int order)
 {
 	if (current->reclaim_state)
 		current->reclaim_state->reclaimed_slab += 1 << order;
-	free_pages((unsigned long)b, order);
+	__ClearPageSlab(sp);
+	page_mapcount_reset(sp);
+	sp->private = 0;
+	__free_pages(sp, order);
 }
 
 /*
@@ -313,15 +317,15 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node)
 
 	/* Not enough space: must allocate a new page */
 	if (!b) {
-		b = slob_new_pages(gfp & ~__GFP_ZERO, 0, node);
-		if (!b)
+		sp = slob_new_pages(gfp & ~__GFP_ZERO, 0, node);
+		if (!sp)
 			return NULL;
-		sp = virt_to_page(b);
-		__SetPageSlab(sp);
+		b = page_address(sp);
 
 		spin_lock_irqsave(&slob_lock, flags);
 		sp->units = SLOB_UNITS(PAGE_SIZE);
 		sp->freelist = b;
+		sp->private = 0;
 		INIT_LIST_HEAD(&sp->lru);
 		set_slob(b, SLOB_UNITS(PAGE_SIZE), b + SLOB_UNITS(PAGE_SIZE));
 		set_slob_page_free(sp, slob_list);
@@ -359,12 +363,15 @@ static void slob_free(void *block, int size)
 		if (slob_page_free(sp))
 			clear_slob_page_free(sp);
 		spin_unlock_irqrestore(&slob_lock, flags);
-		__ClearPageSlab(sp);
-		page_mapcount_reset(sp);
-		slob_free_pages(b, 0);
+		slob_free_pages(sp, 0);
 		return;
 	}
 
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	if (pax_sanitize_slab)
+		memset(block, PAX_MEMORY_SANITIZE_VALUE, size);
+#endif
+
 	if (!slob_page_free(sp)) {
 		/* This slob page is about to become partially free. Easy! */
 		sp->units = units;
@@ -424,11 +431,10 @@ out:
  */
 
 static __always_inline void *
-__do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
+__do_kmalloc_node_align(size_t size, gfp_t gfp, int node, unsigned long caller, int align)
 {
-	unsigned int *m;
-	int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
-	void *ret;
+	slob_t *m;
+	void *ret = NULL;
 
 	gfp &= gfp_allowed_mask;
 
@@ -442,23 +448,41 @@ __do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
 
 		if (!m)
 			return NULL;
-		*m = size;
+		BUILD_BUG_ON(ARCH_KMALLOC_MINALIGN < 2 * SLOB_UNIT);
+		BUILD_BUG_ON(ARCH_SLAB_MINALIGN < 2 * SLOB_UNIT);
+		m[0].units = size;
+		m[1].units = align;
 		ret = (void *)m + align;
 
 		trace_kmalloc_node(caller, ret,
 				   size, size + align, gfp, node);
 	} else {
 		unsigned int order = get_order(size);
+		struct page *page;
 
 		if (likely(order))
 			gfp |= __GFP_COMP;
-		ret = slob_new_pages(gfp, order, node);
+		page = slob_new_pages(gfp, order, node);
+		if (page) {
+			ret = page_address(page);
+			page->private = size;
+		}
 
 		trace_kmalloc_node(caller, ret,
 				   size, PAGE_SIZE << order, gfp, node);
 	}
 
-	kmemleak_alloc(ret, size, 1, gfp);
+	return ret;
+}
+
+static __always_inline void *
+__do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
+{
+	int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
+	void *ret = __do_kmalloc_node_align(size, gfp, node, caller, align);
+
+	if (!ZERO_OR_NULL_PTR(ret))
+		kmemleak_alloc(ret, size, 1, gfp);
 	return ret;
 }
 
@@ -493,34 +517,112 @@ void kfree(const void *block)
 		return;
 	kmemleak_free(block);
 
+	VM_BUG_ON(!virt_addr_valid(block));
 	sp = virt_to_page(block);
-	if (PageSlab(sp)) {
+	VM_BUG_ON(!PageSlab(sp));
+	if (!sp->private) {
 		int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
-		unsigned int *m = (unsigned int *)(block - align);
-		slob_free(m, *m + align);
-	} else
+		slob_t *m = (slob_t *)(block - align);
+		slob_free(m, m[0].units + align);
+	} else {
+		__ClearPageSlab(sp);
+		page_mapcount_reset(sp);
+		sp->private = 0;
 		__free_pages(sp, compound_order(sp));
+	}
 }
 EXPORT_SYMBOL(kfree);
 
+bool is_usercopy_object(const void *ptr)
+{
+	if (!slab_is_available())
+		return false;
+
+	// PAX: TODO
+
+	return false;
+}
+
+#ifdef CONFIG_PAX_USERCOPY
+const char *check_heap_object(const void *ptr, unsigned long n)
+{
+	struct page *page;
+	const slob_t *free;
+	const void *base;
+	unsigned long flags;
+
+	if (ZERO_OR_NULL_PTR(ptr))
+		return "<null>";
+
+	if (!virt_addr_valid(ptr))
+		return NULL;
+
+	page = virt_to_head_page(ptr);
+	if (!PageSlab(page))
+		return NULL;
+
+	if (page->private) {
+		base = page;
+		if (base <= ptr && n <= page->private - (ptr - base))
+			return NULL;
+		return "<slob>";
+	}
+
+	/* some tricky double walking to find the chunk */
+	spin_lock_irqsave(&slob_lock, flags);
+	base = (void *)((unsigned long)ptr & PAGE_MASK);
+	free = page->freelist;
+
+	while (!slob_last(free) && (void *)free <= ptr) {
+		base = free + slob_units(free);
+		free = slob_next(free);
+	}
+
+	while (base < (void *)free) {
+		slobidx_t m = ((slob_t *)base)[0].units, align = ((slob_t *)base)[1].units;
+		int size = SLOB_UNIT * SLOB_UNITS(m + align);
+		int offset;
+
+		if (ptr < base + align)
+			break;
+
+		offset = ptr - base - align;
+		if (offset >= m) {
+			base += size;
+			continue;
+		}
+
+		if (n > m - offset)
+			break;
+
+		spin_unlock_irqrestore(&slob_lock, flags);
+		return NULL;
+	}
+
+	spin_unlock_irqrestore(&slob_lock, flags);
+	return "<slob>";
+}
+#endif
+
 /* can't use ksize for kmem_cache_alloc memory, only kmalloc */
 size_t ksize(const void *block)
 {
 	struct page *sp;
 	int align;
-	unsigned int *m;
+	slob_t *m;
 
 	BUG_ON(!block);
 	if (unlikely(block == ZERO_SIZE_PTR))
 		return 0;
 
 	sp = virt_to_page(block);
-	if (unlikely(!PageSlab(sp)))
-		return PAGE_SIZE << compound_order(sp);
+	VM_BUG_ON(!PageSlab(sp));
+	if (sp->private)
+		return sp->private;
 
 	align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
-	m = (unsigned int *)(block - align);
-	return SLOB_UNITS(*m) * SLOB_UNIT;
+	m = (slob_t *)(block - align);
+	return SLOB_UNITS(m[0].units) * SLOB_UNIT;
 }
 EXPORT_SYMBOL(ksize);
 
@@ -536,23 +638,33 @@ int __kmem_cache_create(struct kmem_cache *c, unsigned long flags)
 
 void *slob_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
 {
-	void *b;
+	void *b = NULL;
 
 	flags &= gfp_allowed_mask;
 
 	lockdep_trace_alloc(flags);
 
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+	b = __do_kmalloc_node_align(c->size, flags, node, _RET_IP_, c->align);
+#else
 	if (c->size < PAGE_SIZE) {
 		b = slob_alloc(c->size, flags, c->align, node);
 		trace_kmem_cache_alloc_node(_RET_IP_, b, c->object_size,
 					    SLOB_UNITS(c->size) * SLOB_UNIT,
 					    flags, node);
 	} else {
-		b = slob_new_pages(flags, get_order(c->size), node);
+		struct page *sp;
+
+		sp = slob_new_pages(flags, get_order(c->size), node);
+		if (sp) {
+			b = page_address(sp);
+			sp->private = c->size;
+		}
 		trace_kmem_cache_alloc_node(_RET_IP_, b, c->object_size,
 					    PAGE_SIZE << get_order(c->size),
 					    flags, node);
 	}
+#endif
 
 	if (b && c->ctor)
 		c->ctor(b);
@@ -584,10 +696,14 @@ EXPORT_SYMBOL(kmem_cache_alloc_node);
 
 static void __kmem_cache_free(void *b, int size)
 {
-	if (size < PAGE_SIZE)
+	struct page *sp;
+
+	sp = virt_to_page(b);
+	BUG_ON(!PageSlab(sp));
+	if (!sp->private)
 		slob_free(b, size);
 	else
-		slob_free_pages(b, get_order(size));
+		slob_free_pages(sp, get_order(size));
 }
 
 static void kmem_rcu_free(struct rcu_head *head)
@@ -600,17 +716,31 @@ static void kmem_rcu_free(struct rcu_head *head)
 
 void kmem_cache_free(struct kmem_cache *c, void *b)
 {
+	int size = c->size;
+
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+	if (size + c->align < PAGE_SIZE) {
+		size += c->align;
+		b -= c->align;
+	}
+#endif
+
 	kmemleak_free_recursive(b, c->flags);
 	if (unlikely(c->flags & SLAB_DESTROY_BY_RCU)) {
 		struct slob_rcu *slob_rcu;
-		slob_rcu = b + (c->size - sizeof(struct slob_rcu));
-		slob_rcu->size = c->size;
+		slob_rcu = b + (size - sizeof(struct slob_rcu));
+		slob_rcu->size = size;
 		call_rcu(&slob_rcu->head, kmem_rcu_free);
 	} else {
-		__kmem_cache_free(b, c->size);
+		__kmem_cache_free(b, size);
 	}
 
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+	trace_kfree(_RET_IP_, b);
+#else
 	trace_kmem_cache_free(_RET_IP_, b);
+#endif
+
 }
 EXPORT_SYMBOL(kmem_cache_free);
 
diff --git a/mm/slub.c b/mm/slub.c
index 7300480..cb92846 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -207,7 +207,7 @@ struct track {
 
 enum track_item { TRACK_ALLOC, TRACK_FREE };
 
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 static int sysfs_slab_add(struct kmem_cache *);
 static int sysfs_slab_alias(struct kmem_cache *, const char *);
 static void memcg_propagate_slab_attrs(struct kmem_cache *s);
@@ -546,7 +546,7 @@ static void print_track(const char *s, struct track *t)
 	if (!t->addr)
 		return;
 
-	pr_err("INFO: %s in %pS age=%lu cpu=%u pid=%d\n",
+	pr_err("INFO: %s in %pA age=%lu cpu=%u pid=%d\n",
 	       s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid);
 #ifdef CONFIG_STACKTRACE
 	{
@@ -2673,6 +2673,14 @@ static __always_inline void slab_free(struct kmem_cache *s,
 
 	slab_free_hook(s, x);
 
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+	if (pax_sanitize_slab && !(s->flags & SLAB_NO_SANITIZE)) {
+		memset(x, PAX_MEMORY_SANITIZE_VALUE, s->object_size);
+		if (s->ctor)
+			s->ctor(x);
+	}
+#endif
+
 redo:
 	/*
 	 * Determine the currently cpus per cpu slab.
@@ -2740,7 +2748,7 @@ static int slub_min_objects;
  * Merge control. If this is set then no merging of slab caches will occur.
  * (Could be removed. This was introduced to pacify the merge skeptics.)
  */
-static int slub_nomerge;
+static int slub_nomerge = 1;
 
 /*
  * Calculate the order of allocation given an slab object size.
@@ -3019,6 +3027,9 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order)
 	s->inuse = size;
 
 	if (((flags & (SLAB_DESTROY_BY_RCU | SLAB_POISON)) ||
+#ifdef CONFIG_PAX_MEMORY_SANITIZE
+		(pax_sanitize_slab && !(flags & SLAB_NO_SANITIZE)) ||
+#endif
 		s->ctor)) {
 		/*
 		 * Relocate free pointer after the object if it is not
@@ -3347,6 +3358,59 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
 EXPORT_SYMBOL(__kmalloc_node);
 #endif
 
+bool is_usercopy_object(const void *ptr)
+{
+	struct page *page;
+	struct kmem_cache *s;
+
+	if (ZERO_OR_NULL_PTR(ptr))
+		return false;
+
+	if (!slab_is_available())
+		return false;
+
+	if (!virt_addr_valid(ptr))
+		return false;
+
+	page = virt_to_head_page(ptr);
+
+	if (!PageSlab(page))
+		return false;
+
+	s = page->slab_cache;
+	return s->flags & SLAB_USERCOPY;
+}
+
+#ifdef CONFIG_PAX_USERCOPY
+const char *check_heap_object(const void *ptr, unsigned long n)
+{
+	struct page *page;
+	struct kmem_cache *s;
+	unsigned long offset;
+
+	if (ZERO_OR_NULL_PTR(ptr))
+		return "<null>";
+
+	if (!virt_addr_valid(ptr))
+		return NULL;
+
+	page = virt_to_head_page(ptr);
+
+	if (!PageSlab(page))
+		return NULL;
+
+	s = page->slab_cache;
+	if (!(s->flags & SLAB_USERCOPY))
+		return s->name;
+
+	offset = (ptr - page_address(page)) % s->size;
+	if (offset <= s->object_size && n <= s->object_size - offset)
+		return NULL;
+
+	return s->name;
+}
+#endif
+
 size_t ksize(const void *object)
 {
 	struct page *page;
@@ -3375,6 +3439,7 @@ void kfree(const void *x)
 	if (unlikely(ZERO_OR_NULL_PTR(x)))
 		return;
 
+	VM_BUG_ON(!virt_addr_valid(x));
 	page = virt_to_head_page(x);
 	if (unlikely(!PageSlab(page))) {
 		BUG_ON(!PageCompound(page));
@@ -3680,7 +3745,7 @@ static int slab_unmergeable(struct kmem_cache *s)
 	/*
 	 * We may have set a slab to be unmergeable during bootstrap.
 	 */
-	if (s->refcount < 0)
+	if (atomic_read(&s->refcount) < 0)
 		return 1;
 
 	return 0;
@@ -3737,7 +3802,7 @@ __kmem_cache_alias(const char *name, size_t size, size_t align,
 		int i;
 		struct kmem_cache *c;
 
-		s->refcount++;
+		atomic_inc(&s->refcount);
 
 		/*
 		 * Adjust the object sizes so that we clear
@@ -3756,7 +3821,7 @@ __kmem_cache_alias(const char *name, size_t size, size_t align,
 		}
 
 		if (sysfs_slab_alias(s, name)) {
-			s->refcount--;
+			atomic_dec(&s->refcount);
 			s = NULL;
 		}
 	}
@@ -3873,7 +3938,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
 }
 #endif
 
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 static int count_inuse(struct page *page)
 {
 	return page->inuse;
@@ -4156,7 +4221,11 @@ static int list_locations(struct kmem_cache *s, char *buf,
 		len += sprintf(buf + len, "%7ld ", l->count);
 
 		if (l->addr)
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+			len += sprintf(buf + len, "%pS", NULL);
+#else
 			len += sprintf(buf + len, "%pS", (void *)l->addr);
+#endif
 		else
 			len += sprintf(buf + len, "<not-available>");
 
@@ -4258,12 +4327,12 @@ static void resiliency_test(void)
 	validate_slab_cache(kmalloc_caches[9]);
 }
 #else
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 static void resiliency_test(void) {};
 #endif
 #endif
 
-#ifdef CONFIG_SYSFS
+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 enum slab_stat_type {
 	SL_ALL,			/* All slabs */
 	SL_PARTIAL,		/* Only partially allocated slabs */
@@ -4503,13 +4572,17 @@ static ssize_t ctor_show(struct kmem_cache *s, char *buf)
 {
 	if (!s->ctor)
 		return 0;
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	return sprintf(buf, "%pS\n", NULL);
+#else
 	return sprintf(buf, "%pS\n", s->ctor);
+#endif
 }
 SLAB_ATTR_RO(ctor);
 
 static ssize_t aliases_show(struct kmem_cache *s, char *buf)
 {
-	return sprintf(buf, "%d\n", s->refcount - 1);
+	return sprintf(buf, "%d\n", atomic_read(&s->refcount) - 1);
 }
 SLAB_ATTR_RO(aliases);
 
@@ -4597,6 +4670,14 @@ static ssize_t cache_dma_show(struct kmem_cache *s, char *buf)
 SLAB_ATTR_RO(cache_dma);
 #endif
 
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+static ssize_t usercopy_show(struct kmem_cache *s, char *buf)
+{
+	return sprintf(buf, "%d\n", !!(s->flags & SLAB_USERCOPY));
+}
+SLAB_ATTR_RO(usercopy);
+#endif
+
 static ssize_t destroy_by_rcu_show(struct kmem_cache *s, char *buf)
 {
 	return sprintf(buf, "%d\n", !!(s->flags & SLAB_DESTROY_BY_RCU));
@@ -4931,6 +5012,9 @@ static struct attribute *slab_attrs[] = {
 #ifdef CONFIG_ZONE_DMA
 	&cache_dma_attr.attr,
 #endif
+#ifdef CONFIG_PAX_USERCOPY_SLABS
+	&usercopy_attr.attr,
+#endif
 #ifdef CONFIG_NUMA
 	&remote_node_defrag_ratio_attr.attr,
 #endif
@@ -5181,6 +5265,7 @@ static char *create_unique_id(struct kmem_cache *s)
 	return name;
 }
 
+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 static int sysfs_slab_add(struct kmem_cache *s)
 {
 	int err;
@@ -5254,6 +5339,7 @@ void sysfs_slab_remove(struct kmem_cache *s)
 	kobject_del(&s->kobj);
 	kobject_put(&s->kobj);
 }
+#endif
 
 /*
  * Need to buffer aliases during bootup until sysfs becomes
@@ -5267,6 +5353,7 @@ struct saved_alias {
 
 static struct saved_alias *alias_list;
 
+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
 static int sysfs_slab_alias(struct kmem_cache *s, const char *name)
 {
 	struct saved_alias *al;
@@ -5289,6 +5376,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name)
 	alias_list = al;
 	return 0;
 }
+#endif
 
 static int __init slab_sysfs_init(void)
 {
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 4cba9c2..b4f9fcc 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -131,7 +131,7 @@ pud_t * __meminit vmemmap_pud_populate(pgd_t *pgd, unsigned long addr, int node)
 		void *p = vmemmap_alloc_block(PAGE_SIZE, node);
 		if (!p)
 			return NULL;
-		pud_populate(&init_mm, pud, p);
+		pud_populate_kernel(&init_mm, pud, p);
 	}
 	return pud;
 }
@@ -143,7 +143,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
 		void *p = vmemmap_alloc_block(PAGE_SIZE, node);
 		if (!p)
 			return NULL;
-		pgd_populate(&init_mm, pgd, p);
+		pgd_populate_kernel(&init_mm, pgd, p);
 	}
 	return pgd;
 }
diff --git a/mm/sparse.c b/mm/sparse.c
index d1b48b6..6e8590e 100644
--- a/mm/sparse.c
+++ b/mm/sparse.c
@@ -750,7 +750,7 @@ static void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
 
 	for (i = 0; i < PAGES_PER_SECTION; i++) {
 		if (PageHWPoison(&memmap[i])) {
-			atomic_long_sub(1, &num_poisoned_pages);
+			atomic_long_sub_unchecked(1, &num_poisoned_pages);
 			ClearPageHWPoison(&memmap[i]);
 		}
 	}
diff --git a/mm/swap.c b/mm/swap.c
index 9e8e347..3c22e0f 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -31,6 +31,7 @@
 #include <linux/memcontrol.h>
 #include <linux/gfp.h>
 #include <linux/uio.h>
+#include <linux/hugetlb.h>
 
 #include "internal.h"
 
@@ -76,6 +77,8 @@ static void __put_compound_page(struct page *page)
 
 	__page_cache_release(page);
 	dtor = get_compound_page_dtor(page);
+	if (!PageHuge(page))
+		BUG_ON(dtor != free_compound_page);
 	(*dtor)(page);
 }
 
diff --git a/mm/swapfile.c b/mm/swapfile.c
index 4c524f7..f7601f17 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -84,7 +84,7 @@ static DEFINE_MUTEX(swapon_mutex);
 
 static DECLARE_WAIT_QUEUE_HEAD(proc_poll_wait);
 /* Activity counter to indicate that a swapon or swapoff has occurred */
-static atomic_t proc_poll_event = ATOMIC_INIT(0);
+static atomic_unchecked_t proc_poll_event = ATOMIC_INIT(0);
 
 static inline unsigned char swap_count(unsigned char ent)
 {
@@ -1945,7 +1945,7 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
 	spin_unlock(&swap_lock);
 
 	err = 0;
-	atomic_inc(&proc_poll_event);
+	atomic_inc_unchecked(&proc_poll_event);
 	wake_up_interruptible(&proc_poll_wait);
 
 out_dput:
@@ -1962,8 +1962,8 @@ static unsigned swaps_poll(struct file *file, poll_table *wait)
 
 	poll_wait(file, &proc_poll_wait, wait);
 
-	if (seq->poll_event != atomic_read(&proc_poll_event)) {
-		seq->poll_event = atomic_read(&proc_poll_event);
+	if (seq->poll_event != atomic_read_unchecked(&proc_poll_event)) {
+		seq->poll_event = atomic_read_unchecked(&proc_poll_event);
 		return POLLIN | POLLRDNORM | POLLERR | POLLPRI;
 	}
 
@@ -2061,7 +2061,7 @@ static int swaps_open(struct inode *inode, struct file *file)
 		return ret;
 
 	seq = file->private_data;
-	seq->poll_event = atomic_read(&proc_poll_event);
+	seq->poll_event = atomic_read_unchecked(&proc_poll_event);
 	return 0;
 }
 
@@ -2521,7 +2521,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
 		(frontswap_map) ? "FS" : "");
 
 	mutex_unlock(&swapon_mutex);
-	atomic_inc(&proc_poll_event);
+	atomic_inc_unchecked(&proc_poll_event);
 	wake_up_interruptible(&proc_poll_wait);
 
 	if (S_ISREG(inode->i_mode))
diff --git a/mm/util.c b/mm/util.c
index 33e9f44..be026b2 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -296,6 +296,12 @@ done:
 void arch_pick_mmap_layout(struct mm_struct *mm)
 {
 	mm->mmap_base = TASK_UNMAPPED_BASE;
+
+#ifdef CONFIG_PAX_RANDMMAP
+	if (mm->pax_flags & MF_PAX_RANDMMAP)
+		mm->mmap_base += mm->delta_mmap;
+#endif
+
 	mm->get_unmapped_area = arch_get_unmapped_area;
 }
 #endif
@@ -472,6 +478,9 @@ int get_cmdline(struct task_struct *task, char *buffer, int buflen)
 	if (!mm->arg_end)
 		goto out_mm;	/* Shh! No looking before we're done */
 
+	if (gr_acl_handle_procpidmem(task))
+		goto out_mm;
+
 	len = mm->arg_end - mm->arg_start;
 
 	if (len > buflen)
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index f64632b..e8c52e7 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -40,6 +40,21 @@ struct vfree_deferred {
 };
 static DEFINE_PER_CPU(struct vfree_deferred, vfree_deferred);
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+struct stack_deferred_llist {
+	struct llist_head list;
+	void *stack;
+	void *lowmem_stack;
+};
+
+struct stack_deferred {
+	struct stack_deferred_llist list;
+	struct work_struct wq;
+};
+
+static DEFINE_PER_CPU(struct stack_deferred, stack_deferred);
+#endif
+
 static void __vunmap(const void *, int);
 
 static void free_work(struct work_struct *w)
@@ -47,12 +62,30 @@ static void free_work(struct work_struct *w)
 	struct vfree_deferred *p = container_of(w, struct vfree_deferred, wq);
 	struct llist_node *llnode = llist_del_all(&p->list);
 	while (llnode) {
-		void *p = llnode;
+		void *x = llnode;
 		llnode = llist_next(llnode);
-		__vunmap(p, 1);
+		__vunmap(x, 1);
 	}
 }
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+static void unmap_work(struct work_struct *w)
+{
+	struct stack_deferred *p = container_of(w, struct stack_deferred, wq);
+	struct llist_node *llnode = llist_del_all(&p->list.list);
+	while (llnode) {
+		struct stack_deferred_llist *x =
+			llist_entry((struct llist_head *)llnode,
+				     struct stack_deferred_llist, list);
+		void *stack = ACCESS_ONCE(x->stack);
+		void *lowmem_stack = ACCESS_ONCE(x->lowmem_stack);
+		llnode = llist_next(llnode);
+		__vunmap(stack, 0);
+		free_kmem_pages((unsigned long)lowmem_stack, THREAD_SIZE_ORDER);
+	}
+}
+#endif
+
 /*** Page table manipulation functions ***/
 
 static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end)
@@ -61,8 +94,19 @@ static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end)
 
 	pte = pte_offset_kernel(pmd, addr);
 	do {
-		pte_t ptent = ptep_get_and_clear(&init_mm, addr, pte);
-		WARN_ON(!pte_none(ptent) && !pte_present(ptent));
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		if ((unsigned long)MODULES_EXEC_VADDR <= addr && addr < (unsigned long)MODULES_EXEC_END) {
+			BUG_ON(!pte_exec(*pte));
+			set_pte_at(&init_mm, addr, pte, pfn_pte(__pa(addr) >> PAGE_SHIFT, PAGE_KERNEL_EXEC));
+			continue;
+		}
+#endif
+
+		{
+			pte_t ptent = ptep_get_and_clear(&init_mm, addr, pte);
+			WARN_ON(!pte_none(ptent) && !pte_present(ptent));
+		}
 	} while (pte++, addr += PAGE_SIZE, addr != end);
 }
 
@@ -122,16 +166,29 @@ static int vmap_pte_range(pmd_t *pmd, unsigned long addr,
 	pte = pte_alloc_kernel(pmd, addr);
 	if (!pte)
 		return -ENOMEM;
+
+	pax_open_kernel();
 	do {
 		struct page *page = pages[*nr];
 
-		if (WARN_ON(!pte_none(*pte)))
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+		if (pgprot_val(prot) & _PAGE_NX)
+#endif
+
+		if (!pte_none(*pte)) {
+			pax_close_kernel();
+			WARN_ON(1);
 			return -EBUSY;
-		if (WARN_ON(!page))
+		}
+		if (!page) {
+			pax_close_kernel();
+			WARN_ON(1);
 			return -ENOMEM;
+		}
 		set_pte_at(&init_mm, addr, pte, mk_pte(page, prot));
 		(*nr)++;
 	} while (pte++, addr += PAGE_SIZE, addr != end);
+	pax_close_kernel();
 	return 0;
 }
 
@@ -141,7 +198,7 @@ static int vmap_pmd_range(pud_t *pud, unsigned long addr,
 	pmd_t *pmd;
 	unsigned long next;
 
-	pmd = pmd_alloc(&init_mm, pud, addr);
+	pmd = pmd_alloc_kernel(&init_mm, pud, addr);
 	if (!pmd)
 		return -ENOMEM;
 	do {
@@ -158,7 +215,7 @@ static int vmap_pud_range(pgd_t *pgd, unsigned long addr,
 	pud_t *pud;
 	unsigned long next;
 
-	pud = pud_alloc(&init_mm, pgd, addr);
+	pud = pud_alloc_kernel(&init_mm, pgd, addr);
 	if (!pud)
 		return -ENOMEM;
 	do {
@@ -218,6 +275,12 @@ int is_vmalloc_or_module_addr(const void *x)
 	if (addr >= MODULES_VADDR && addr < MODULES_END)
 		return 1;
 #endif
+
+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
+	if (x >= (const void *)MODULES_EXEC_VADDR && x < (const void *)MODULES_EXEC_END)
+		return 1;
+#endif
+
 	return is_vmalloc_addr(x);
 }
 
@@ -238,8 +301,14 @@ struct page *vmalloc_to_page(const void *vmalloc_addr)
 
 	if (!pgd_none(*pgd)) {
 		pud_t *pud = pud_offset(pgd, addr);
+#ifdef CONFIG_X86
+		if (!pud_large(*pud))
+#endif
 		if (!pud_none(*pud)) {
 			pmd_t *pmd = pmd_offset(pud, addr);
+#ifdef CONFIG_X86
+			if (!pmd_large(*pmd))
+#endif
 			if (!pmd_none(*pmd)) {
 				pte_t *ptep, pte;
 
@@ -1183,13 +1252,23 @@ void __init vmalloc_init(void)
 	for_each_possible_cpu(i) {
 		struct vmap_block_queue *vbq;
 		struct vfree_deferred *p;
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+		struct stack_deferred *p2;
+#endif
 
 		vbq = &per_cpu(vmap_block_queue, i);
 		spin_lock_init(&vbq->lock);
 		INIT_LIST_HEAD(&vbq->free);
+
 		p = &per_cpu(vfree_deferred, i);
 		init_llist_head(&p->list);
 		INIT_WORK(&p->wq, free_work);
+
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+		p2 = &per_cpu(stack_deferred, i);
+		init_llist_head(&p2->list.list);
+		INIT_WORK(&p2->wq, unmap_work);
+#endif
 	}
 
 	/* Import existing vmlist entries. */
@@ -1318,6 +1397,16 @@ static struct vm_struct *__get_vm_area_node(unsigned long size,
 	struct vm_struct *area;
 
 	BUG_ON(in_interrupt());
+
+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
+	if (flags & VM_KERNEXEC) {
+		if (start != VMALLOC_START || end != VMALLOC_END)
+			return NULL;
+		start = (unsigned long)MODULES_EXEC_VADDR;
+		end = (unsigned long)MODULES_EXEC_END;
+	}
+#endif
+
 	if (flags & VM_IOREMAP)
 		align = 1ul << clamp(fls(size), PAGE_SHIFT, IOREMAP_MAX_ORDER);
 
@@ -1523,6 +1612,23 @@ void vunmap(const void *addr)
 }
 EXPORT_SYMBOL(vunmap);
 
+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
+void unmap_process_stacks(struct task_struct *task)
+{
+	if (unlikely(in_interrupt())) {
+		struct stack_deferred *p = &__get_cpu_var(stack_deferred);
+		struct stack_deferred_llist *list = task->stack;
+		list->stack = task->stack;
+		list->lowmem_stack = task->lowmem_stack;
+		if (llist_add((struct llist_node *)&list->list, &p->list.list))
+			schedule_work(&p->wq);
+	} else {
+		__vunmap(task->stack, 0);
+		free_kmem_pages((unsigned long)task->lowmem_stack, THREAD_SIZE_ORDER);
+	}
+}
+#endif
+
 /**
  *	vmap  -  map an array of pages into virtually contiguous space
  *	@pages:		array of page pointers
@@ -1543,6 +1649,11 @@ void *vmap(struct page **pages, unsigned int count,
 	if (count > totalram_pages)
 		return NULL;
 
+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
+	if (!(pgprot_val(prot) & _PAGE_NX))
+		flags |= VM_KERNEXEC;
+#endif
+
 	area = get_vm_area_caller((count << PAGE_SHIFT), flags,
 					__builtin_return_address(0));
 	if (!area)
@@ -1643,6 +1754,13 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
 	if (!size || (size >> PAGE_SHIFT) > totalram_pages)
 		goto fail;
 
+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
+	if (!(pgprot_val(prot) & _PAGE_NX))
+		area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNINITIALIZED | VM_KERNEXEC,
+					  VMALLOC_START, VMALLOC_END, node, gfp_mask, caller);
+	else
+#endif
+
 	area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNINITIALIZED,
 				  start, end, node, gfp_mask, caller);
 	if (!area)
@@ -1819,10 +1937,9 @@ EXPORT_SYMBOL(vzalloc_node);
  *	For tight control over page level allocator and protection flags
  *	use __vmalloc() instead.
  */
-
 void *vmalloc_exec(unsigned long size)
 {
-	return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC,
+	return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL_EXEC,
 			      NUMA_NO_NODE, __builtin_return_address(0));
 }
 
@@ -2129,6 +2246,8 @@ int remap_vmalloc_range_partial(struct vm_area_struct *vma, unsigned long uaddr,
 {
 	struct vm_struct *area;
 
+	BUG_ON(vma->vm_mirror);
+
 	size = PAGE_ALIGN(size);
 
 	if (!PAGE_ALIGNED(uaddr) || !PAGE_ALIGNED(kaddr))
@@ -2611,7 +2730,11 @@ static int s_show(struct seq_file *m, void *p)
 		v->addr, v->addr + v->size, v->size);
 
 	if (v->caller)
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+		seq_printf(m, " %pK", v->caller);
+#else
 		seq_printf(m, " %pS", v->caller);
+#endif
 
 	if (v->nr_pages)
 		seq_printf(m, " pages=%d", v->nr_pages);
diff --git a/mm/vmstat.c b/mm/vmstat.c
index b37bd49..4d7b3da 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -20,6 +20,7 @@
 #include <linux/writeback.h>
 #include <linux/compaction.h>
 #include <linux/mm_inline.h>
+#include <linux/grsecurity.h>
 
 #include "internal.h"
 
@@ -79,7 +80,7 @@ void vm_events_fold_cpu(int cpu)
  *
  * vm_stat contains the global counters
  */
-atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp;
+atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp;
 EXPORT_SYMBOL(vm_stat);
 
 #ifdef CONFIG_SMP
@@ -425,7 +426,7 @@ static inline void fold_diff(int *diff)
 
 	for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
 		if (diff[i])
-			atomic_long_add(diff[i], &vm_stat[i]);
+			atomic_long_add_unchecked(diff[i], &vm_stat[i]);
 }
 
 /*
@@ -457,7 +458,7 @@ static void refresh_cpu_vm_stats(void)
 			v = this_cpu_xchg(p->vm_stat_diff[i], 0);
 			if (v) {
 
-				atomic_long_add(v, &zone->vm_stat[i]);
+				atomic_long_add_unchecked(v, &zone->vm_stat[i]);
 				global_diff[i] += v;
 #ifdef CONFIG_NUMA
 				/* 3 seconds idle till flush */
@@ -519,7 +520,7 @@ void cpu_vm_stats_fold(int cpu)
 
 				v = p->vm_stat_diff[i];
 				p->vm_stat_diff[i] = 0;
-				atomic_long_add(v, &zone->vm_stat[i]);
+				atomic_long_add_unchecked(v, &zone->vm_stat[i]);
 				global_diff[i] += v;
 			}
 	}
@@ -539,8 +540,8 @@ void drain_zonestat(struct zone *zone, struct per_cpu_pageset *pset)
 		if (pset->vm_stat_diff[i]) {
 			int v = pset->vm_stat_diff[i];
 			pset->vm_stat_diff[i] = 0;
-			atomic_long_add(v, &zone->vm_stat[i]);
-			atomic_long_add(v, &vm_stat[i]);
+			atomic_long_add_unchecked(v, &zone->vm_stat[i]);
+			atomic_long_add_unchecked(v, &vm_stat[i]);
 		}
 }
 #endif
@@ -1162,10 +1163,22 @@ static void *vmstat_start(struct seq_file *m, loff_t *pos)
 	stat_items_size += sizeof(struct vm_event_state);
 #endif
 
-	v = kmalloc(stat_items_size, GFP_KERNEL);
+	v = kzalloc(stat_items_size, GFP_KERNEL);
 	m->private = v;
 	if (!v)
 		return ERR_PTR(-ENOMEM);
+
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
+        if (!uid_eq(current_uid(), GLOBAL_ROOT_UID)
+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
+                && !in_group_p(grsec_proc_gid)
+#endif
+        )
+		return (unsigned long *)m->private + *pos;
+#endif
+#endif
+
 	for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
 		v[i] = global_page_state(i);
 	v += NR_VM_ZONE_STAT_ITEMS;
@@ -1314,10 +1327,16 @@ static int __init setup_vmstat(void)
 	cpu_notifier_register_done();
 #endif
 #ifdef CONFIG_PROC_FS
-	proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
-	proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
-	proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
-	proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
+	{
+		mode_t gr_mode = S_IRUGO;
+#ifdef CONFIG_GRKERNSEC_PROC_ADD
+		gr_mode = S_IRUSR;
+#endif
+		proc_create("buddyinfo", gr_mode, NULL, &fragmentation_file_operations);
+		proc_create("pagetypeinfo", gr_mode, NULL, &pagetypeinfo_file_ops);
+		proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
+		proc_create("zoneinfo", gr_mode, NULL, &proc_zoneinfo_file_operations);
+	}
 #endif
 	return 0;
 }
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 44ebd5c..1f732bae 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -475,7 +475,7 @@ out:
 	return NOTIFY_DONE;
 }
 
-static struct notifier_block vlan_notifier_block __read_mostly = {
+static struct notifier_block vlan_notifier_block = {
 	.notifier_call = vlan_device_event,
 };
 
@@ -550,8 +550,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
 		err = -EPERM;
 		if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
 			break;
-		if ((args.u.name_type >= 0) &&
-		    (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) {
+		if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) {
 			struct vlan_net *vn;
 
 			vn = net_generic(net, vlan_net_id);
diff --git a/net/9p/client.c b/net/9p/client.c
index 0004cba..feba240 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -596,7 +596,7 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req,
 				       len - inline_len);
 			} else {
 				err = copy_from_user(ename + inline_len,
-						     uidata, len - inline_len);
+						     (char __force_user *)uidata, len - inline_len);
 				if (err) {
 					err = -EFAULT;
 					goto out_err;
@@ -1571,7 +1571,7 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
 			kernel_buf = 1;
 			indata = data;
 		} else
-			indata = (__force char *)udata;
+			indata = (__force_kernel char *)udata;
 		/*
 		 * response header len is 11
 		 * PDU Header(7) + IO Size (4)
@@ -1646,7 +1646,7 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
 			kernel_buf = 1;
 			odata = data;
 		} else
-			odata = (char *)udata;
+			odata = (char __force_kernel *)udata;
 		req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, odata, 0, rsize,
 				       P9_ZC_HDR_SZ, kernel_buf, "dqd",
 				       fid->fid, offset, rsize);
diff --git a/net/9p/mod.c b/net/9p/mod.c
index 6ab36ae..6f1841b 100644
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -84,7 +84,7 @@ static LIST_HEAD(v9fs_trans_list);
 void v9fs_register_trans(struct p9_trans_module *m)
 {
 	spin_lock(&v9fs_trans_lock);
-	list_add_tail(&m->list, &v9fs_trans_list);
+	pax_list_add_tail((struct list_head *)&m->list, &v9fs_trans_list);
 	spin_unlock(&v9fs_trans_lock);
 }
 EXPORT_SYMBOL(v9fs_register_trans);
@@ -97,7 +97,7 @@ EXPORT_SYMBOL(v9fs_register_trans);
 void v9fs_unregister_trans(struct p9_trans_module *m)
 {
 	spin_lock(&v9fs_trans_lock);
-	list_del_init(&m->list);
+	pax_list_del_init((struct list_head *)&m->list);
 	spin_unlock(&v9fs_trans_lock);
 }
 EXPORT_SYMBOL(v9fs_unregister_trans);
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index 80d08f6..de63fd1 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -428,7 +428,7 @@ static int p9_fd_write(struct p9_client *client, void *v, int len)
 	oldfs = get_fs();
 	set_fs(get_ds());
 	/* The cast to a user pointer is valid due to the set_fs() */
-	ret = vfs_write(ts->wr, (__force void __user *)v, len, &ts->wr->f_pos);
+	ret = vfs_write(ts->wr, (void __force_user *)v, len, &ts->wr->f_pos);
 	set_fs(oldfs);
 
 	if (ret <= 0 && ret != -ERESTARTSYS && ret != -EAGAIN)
diff --git a/net/Kconfig b/net/Kconfig
index d92afe4..ab63892 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -89,12 +89,8 @@ config NETWORK_SECMARK
 	  to nfmark, but designated for security purposes.
 	  If you are unsure how to answer this question, answer N.
 
-config NET_PTP_CLASSIFY
-	def_bool n
-
 config NETWORK_PHY_TIMESTAMPING
 	bool "Timestamping in PHY devices"
-	select NET_PTP_CLASSIFY
 	help
 	  This allows timestamping of network packets by PHYs with
 	  hardware timestamping capabilities. This option adds some
@@ -269,7 +265,7 @@ config BQL
 config BPF_JIT
 	bool "enable BPF Just In Time compiler"
 	depends on HAVE_BPF_JIT
-	depends on MODULES
+	depends on MODULES && X86
 	---help---
 	  Berkeley Packet Filter filtering capabilities are normally handled
 	  by an interpreter. This option allows kernel to generate a native
diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
index af46bc4..f9adfcd 100644
--- a/net/appletalk/atalk_proc.c
+++ b/net/appletalk/atalk_proc.c
@@ -256,7 +256,7 @@ int __init atalk_proc_init(void)
 	struct proc_dir_entry *p;
 	int rc = -ENOMEM;
 
-	atalk_proc_dir = proc_mkdir("atalk", init_net.proc_net);
+	atalk_proc_dir = proc_mkdir_restrict("atalk", init_net.proc_net);
 	if (!atalk_proc_dir)
 		goto out;
 
diff --git a/net/atm/atm_misc.c b/net/atm/atm_misc.c
index 876fbe8..8bbea9f 100644
--- a/net/atm/atm_misc.c
+++ b/net/atm/atm_misc.c
@@ -17,7 +17,7 @@ int atm_charge(struct atm_vcc *vcc, int truesize)
 	if (atomic_read(&sk_atm(vcc)->sk_rmem_alloc) <= sk_atm(vcc)->sk_rcvbuf)
 		return 1;
 	atm_return(vcc, truesize);
-	atomic_inc(&vcc->stats->rx_drop);
+	atomic_inc_unchecked(&vcc->stats->rx_drop);
 	return 0;
 }
 EXPORT_SYMBOL(atm_charge);
@@ -39,7 +39,7 @@ struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc, int pdu_size,
 		}
 	}
 	atm_return(vcc, guess);
-	atomic_inc(&vcc->stats->rx_drop);
+	atomic_inc_unchecked(&vcc->stats->rx_drop);
 	return NULL;
 }
 EXPORT_SYMBOL(atm_alloc_charge);
@@ -86,7 +86,7 @@ EXPORT_SYMBOL(atm_pcr_goal);
 
 void sonet_copy_stats(struct k_sonet_stats *from, struct sonet_stats *to)
 {
-#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
+#define __HANDLE_ITEM(i) to->i = atomic_read_unchecked(&from->i)
 	__SONET_ITEMS
 #undef __HANDLE_ITEM
 }
@@ -94,7 +94,7 @@ EXPORT_SYMBOL(sonet_copy_stats);
 
 void sonet_subtract_stats(struct k_sonet_stats *from, struct sonet_stats *to)
 {
-#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
+#define __HANDLE_ITEM(i) atomic_sub_unchecked(to->i,&from->i)
 	__SONET_ITEMS
 #undef __HANDLE_ITEM
 }
diff --git a/net/atm/lec.c b/net/atm/lec.c
index 4c5b8ba..95f7005 100644
--- a/net/atm/lec.c
+++ b/net/atm/lec.c
@@ -111,9 +111,9 @@ static inline void lec_arp_put(struct lec_arp_table *entry)
 }
 
 static struct lane2_ops lane2_ops = {
-	lane2_resolve,		/* resolve,             spec 3.1.3 */
-	lane2_associate_req,	/* associate_req,       spec 3.1.4 */
-	NULL			/* associate indicator, spec 3.1.5 */
+	.resolve = lane2_resolve,
+	.associate_req = lane2_associate_req,
+	.associate_indicator = NULL
 };
 
 static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
diff --git a/net/atm/lec.h b/net/atm/lec.h
index 4149db1..f2ab682 100644
--- a/net/atm/lec.h
+++ b/net/atm/lec.h
@@ -48,7 +48,7 @@ struct lane2_ops {
 			      const u8 *tlvs, u32 sizeoftlvs);
 	void (*associate_indicator) (struct net_device *dev, const u8 *mac_addr,
 				     const u8 *tlvs, u32 sizeoftlvs);
-};
+} __no_const;
 
 /*
  * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType
diff --git a/net/atm/mpoa_caches.c b/net/atm/mpoa_caches.c
index d1b2d9a..d549f7f 100644
--- a/net/atm/mpoa_caches.c
+++ b/net/atm/mpoa_caches.c
@@ -535,30 +535,30 @@ static void eg_destroy_cache(struct mpoa_client *mpc)
 
 
 static struct in_cache_ops ingress_ops = {
-	in_cache_add_entry,               /* add_entry       */
-	in_cache_get,                     /* get             */
-	in_cache_get_with_mask,           /* get_with_mask   */
-	in_cache_get_by_vcc,              /* get_by_vcc      */
-	in_cache_put,                     /* put             */
-	in_cache_remove_entry,            /* remove_entry    */
-	cache_hit,                        /* cache_hit       */
-	clear_count_and_expired,          /* clear_count     */
-	check_resolving_entries,          /* check_resolving */
-	refresh_entries,                  /* refresh         */
-	in_destroy_cache                  /* destroy_cache   */
+	.add_entry = in_cache_add_entry,
+	.get = in_cache_get,
+	.get_with_mask = in_cache_get_with_mask,
+	.get_by_vcc = in_cache_get_by_vcc,
+	.put = in_cache_put,
+	.remove_entry = in_cache_remove_entry,
+	.cache_hit = cache_hit,
+	.clear_count = clear_count_and_expired,
+	.check_resolving = check_resolving_entries,
+	.refresh = refresh_entries,
+	.destroy_cache = in_destroy_cache
 };
 
 static struct eg_cache_ops egress_ops = {
-	eg_cache_add_entry,               /* add_entry        */
-	eg_cache_get_by_cache_id,         /* get_by_cache_id  */
-	eg_cache_get_by_tag,              /* get_by_tag       */
-	eg_cache_get_by_vcc,              /* get_by_vcc       */
-	eg_cache_get_by_src_ip,           /* get_by_src_ip    */
-	eg_cache_put,                     /* put              */
-	eg_cache_remove_entry,            /* remove_entry     */
-	update_eg_cache_entry,            /* update           */
-	clear_expired,                    /* clear_expired    */
-	eg_destroy_cache                  /* destroy_cache    */
+	.add_entry = eg_cache_add_entry,
+	.get_by_cache_id = eg_cache_get_by_cache_id,
+	.get_by_tag = eg_cache_get_by_tag,
+	.get_by_vcc = eg_cache_get_by_vcc,
+	.get_by_src_ip = eg_cache_get_by_src_ip,
+	.put = eg_cache_put,
+	.remove_entry = eg_cache_remove_entry,
+	.update = update_eg_cache_entry,
+	.clear_expired = clear_expired,
+	.destroy_cache = eg_destroy_cache
 };
 
 
diff --git a/net/atm/proc.c b/net/atm/proc.c
index bbb6461..cf04016 100644
--- a/net/atm/proc.c
+++ b/net/atm/proc.c
@@ -45,9 +45,9 @@ static void add_stats(struct seq_file *seq, const char *aal,
   const struct k_atm_aal_stats *stats)
 {
 	seq_printf(seq, "%s ( %d %d %d %d %d )", aal,
-		   atomic_read(&stats->tx), atomic_read(&stats->tx_err),
-		   atomic_read(&stats->rx), atomic_read(&stats->rx_err),
-		   atomic_read(&stats->rx_drop));
+		   atomic_read_unchecked(&stats->tx),atomic_read_unchecked(&stats->tx_err),
+		   atomic_read_unchecked(&stats->rx),atomic_read_unchecked(&stats->rx_err),
+		   atomic_read_unchecked(&stats->rx_drop));
 }
 
 static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev)
diff --git a/net/atm/resources.c b/net/atm/resources.c
index 0447d5d..3cf4728 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -160,7 +160,7 @@ EXPORT_SYMBOL(atm_dev_deregister);
 static void copy_aal_stats(struct k_atm_aal_stats *from,
     struct atm_aal_stats *to)
 {
-#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
+#define __HANDLE_ITEM(i) to->i = atomic_read_unchecked(&from->i)
 	__AAL_STAT_ITEMS
 #undef __HANDLE_ITEM
 }
@@ -168,7 +168,7 @@ static void copy_aal_stats(struct k_atm_aal_stats *from,
 static void subtract_aal_stats(struct k_atm_aal_stats *from,
     struct atm_aal_stats *to)
 {
-#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
+#define __HANDLE_ITEM(i) atomic_sub_unchecked(to->i, &from->i)
 	__AAL_STAT_ITEMS
 #undef __HANDLE_ITEM
 }
diff --git a/net/ax25/sysctl_net_ax25.c b/net/ax25/sysctl_net_ax25.c
index 919a5ce..cc6b444 100644
--- a/net/ax25/sysctl_net_ax25.c
+++ b/net/ax25/sysctl_net_ax25.c
@@ -152,7 +152,7 @@ int ax25_register_dev_sysctl(ax25_dev *ax25_dev)
 {
 	char path[sizeof("net/ax25/") + IFNAMSIZ];
 	int k;
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(ax25_param_table, sizeof(ax25_param_table), GFP_KERNEL);
 	if (!table)
diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index f04224c..f326579 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -312,7 +312,7 @@ static int batadv_iv_ogm_iface_enable(struct batadv_hard_iface *hard_iface)
 
 	/* randomize initial seqno to avoid collision */
 	get_random_bytes(&random_seqno, sizeof(random_seqno));
-	atomic_set(&hard_iface->bat_iv.ogm_seqno, random_seqno);
+	atomic_set_unchecked(&hard_iface->bat_iv.ogm_seqno, random_seqno);
 
 	hard_iface->bat_iv.ogm_buff_len = BATADV_OGM_HLEN;
 	ogm_buff = kmalloc(hard_iface->bat_iv.ogm_buff_len, GFP_ATOMIC);
@@ -917,9 +917,9 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
 	batadv_ogm_packet->tvlv_len = htons(tvlv_len);
 
 	/* change sequence number to network order */
-	seqno = (uint32_t)atomic_read(&hard_iface->bat_iv.ogm_seqno);
+	seqno = (uint32_t)atomic_read_unchecked(&hard_iface->bat_iv.ogm_seqno);
 	batadv_ogm_packet->seqno = htonl(seqno);
-	atomic_inc(&hard_iface->bat_iv.ogm_seqno);
+	atomic_inc_unchecked(&hard_iface->bat_iv.ogm_seqno);
 
 	batadv_iv_ogm_slide_own_bcast_window(hard_iface);
 
@@ -1596,7 +1596,7 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset,
 		return;
 
 	/* could be changed by schedule_own_packet() */
-	if_incoming_seqno = atomic_read(&if_incoming->bat_iv.ogm_seqno);
+	if_incoming_seqno = atomic_read_unchecked(&if_incoming->bat_iv.ogm_seqno);
 
 	if (ogm_packet->flags & BATADV_DIRECTLINK)
 		has_directlink_flag = true;
diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
index 022d18a..919daff 100644
--- a/net/batman-adv/fragmentation.c
+++ b/net/batman-adv/fragmentation.c
@@ -450,7 +450,7 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
 	frag_header.packet_type = BATADV_UNICAST_FRAG;
 	frag_header.version = BATADV_COMPAT_VERSION;
 	frag_header.ttl = BATADV_TTL;
-	frag_header.seqno = htons(atomic_inc_return(&bat_priv->frag_seqno));
+	frag_header.seqno = htons(atomic_inc_return_unchecked(&bat_priv->frag_seqno));
 	frag_header.reserved = 0;
 	frag_header.no = 0;
 	frag_header.total_size = htons(skb->len);
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index cbd677f..b783347 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -296,7 +296,7 @@ send:
 				primary_if->net_dev->dev_addr);
 
 		/* set broadcast sequence number */
-		seqno = atomic_inc_return(&bat_priv->bcast_seqno);
+		seqno = atomic_inc_return_unchecked(&bat_priv->bcast_seqno);
 		bcast_packet->seqno = htonl(seqno);
 
 		batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay);
@@ -761,7 +761,7 @@ static int batadv_softif_init_late(struct net_device *dev)
 	atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
 
 	atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
-	atomic_set(&bat_priv->bcast_seqno, 1);
+	atomic_set_unchecked(&bat_priv->bcast_seqno, 1);
 	atomic_set(&bat_priv->tt.vn, 0);
 	atomic_set(&bat_priv->tt.local_changes, 0);
 	atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
@@ -775,7 +775,7 @@ static int batadv_softif_init_late(struct net_device *dev)
 
 	/* randomize initial seqno to avoid collision */
 	get_random_bytes(&random_seqno, sizeof(random_seqno));
-	atomic_set(&bat_priv->frag_seqno, random_seqno);
+	atomic_set_unchecked(&bat_priv->frag_seqno, random_seqno);
 
 	bat_priv->primary_if = NULL;
 	bat_priv->num_ifaces = 0;
diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
index 8854c05..ee5d5497 100644
--- a/net/batman-adv/types.h
+++ b/net/batman-adv/types.h
@@ -67,7 +67,7 @@ enum batadv_dhcp_recipient {
 struct batadv_hard_iface_bat_iv {
 	unsigned char *ogm_buff;
 	int ogm_buff_len;
-	atomic_t ogm_seqno;
+	atomic_unchecked_t ogm_seqno;
 };
 
 /**
@@ -768,7 +768,7 @@ struct batadv_priv {
 	atomic_t bonding;
 	atomic_t fragmentation;
 	atomic_t packet_size_max;
-	atomic_t frag_seqno;
+	atomic_unchecked_t frag_seqno;
 #ifdef CONFIG_BATMAN_ADV_BLA
 	atomic_t bridge_loop_avoidance;
 #endif
@@ -787,7 +787,7 @@ struct batadv_priv {
 #endif
 	uint32_t isolation_mark;
 	uint32_t isolation_mark_mask;
-	atomic_t bcast_seqno;
+	atomic_unchecked_t bcast_seqno;
 	atomic_t bcast_queue_left;
 	atomic_t batman_queue_left;
 	char num_ifaces;
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 80d25c1..aa99a98 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1044,7 +1044,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname,
 			uf.event_mask[1] = *((u32 *) f->event_mask + 1);
 		}
 
-		len = min_t(unsigned int, len, sizeof(uf));
+		len = min((size_t)len, sizeof(uf));
 		if (copy_from_user(&uf, optval, len)) {
 			err = -EFAULT;
 			break;
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 323f23c..5e27529 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -3548,8 +3548,10 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
 			break;
 
 		case L2CAP_CONF_RFC:
-			if (olen == sizeof(rfc))
-				memcpy(&rfc, (void *)val, olen);
+			if (olen != sizeof(rfc))
+				break;
+
+			memcpy(&rfc, (void *)val, olen);
 
 			if (test_bit(CONF_STATE2_DEVICE, &chan->conf_state) &&
 			    rfc.mode != chan->mode)
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index d0fd8b0..e33d2f9 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -628,7 +628,8 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname,
 	struct sock *sk = sock->sk;
 	struct l2cap_chan *chan = l2cap_pi(sk)->chan;
 	struct l2cap_options opts;
-	int len, err = 0;
+	int err = 0;
+	size_t len = optlen;
 	u32 opt;
 
 	BT_DBG("sk %p", sk);
@@ -655,7 +656,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname,
 		opts.max_tx   = chan->max_tx;
 		opts.txwin_size = chan->tx_win;
 
-		len = min_t(unsigned int, sizeof(opts), optlen);
+		len = min(sizeof(opts), len);
 		if (copy_from_user((char *) &opts, optval, len)) {
 			err = -EFAULT;
 			break;
@@ -742,7 +743,8 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 	struct bt_security sec;
 	struct bt_power pwr;
 	struct l2cap_conn *conn;
-	int len, err = 0;
+	int err = 0;
+	size_t len = optlen;
 	u32 opt;
 
 	BT_DBG("sk %p", sk);
@@ -766,7 +768,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 
 		sec.level = BT_SECURITY_LOW;
 
-		len = min_t(unsigned int, sizeof(sec), optlen);
+		len = min(sizeof(sec), len);
 		if (copy_from_user((char *) &sec, optval, len)) {
 			err = -EFAULT;
 			break;
@@ -861,7 +863,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
 
 		pwr.force_active = BT_POWER_FORCE_ACTIVE_ON;
 
-		len = min_t(unsigned int, sizeof(pwr), optlen);
+		len = min(sizeof(pwr), len);
 		if (copy_from_user((char *) &pwr, optval, len)) {
 			err = -EFAULT;
 			break;
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 8bbbb5e..6fc0950 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -687,7 +687,7 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
 	struct sock *sk = sock->sk;
 	struct bt_security sec;
 	int err = 0;
-	size_t len;
+	size_t len = optlen;
 	u32 opt;
 
 	BT_DBG("sk %p", sk);
@@ -709,7 +709,7 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
 
 		sec.level = BT_SECURITY_LOW;
 
-		len = min_t(unsigned int, sizeof(sec), optlen);
+		len = min(sizeof(sec), len);
 		if (copy_from_user((char *) &sec, optval, len)) {
 			err = -EFAULT;
 			break;
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index 8e385a0..a5bdd8e 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -752,7 +752,7 @@ static int rfcomm_tty_open(struct tty_struct *tty, struct file *filp)
 	BT_DBG("tty %p id %d", tty, tty->index);
 
 	BT_DBG("dev %p dst %pMR channel %d opened %d", dev, &dev->dst,
-	       dev->channel, dev->port.count);
+	       dev->channel, atomic_read(&dev->port.count));
 
 	err = tty_port_open(&dev->port, tty, filp);
 	if (err)
@@ -775,7 +775,7 @@ static void rfcomm_tty_close(struct tty_struct *tty, struct file *filp)
 	struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
 
 	BT_DBG("tty %p dev %p dlc %p opened %d", tty, dev, dev->dlc,
-						dev->port.count);
+						atomic_read(&dev->port.count));
 
 	tty_port_close(&dev->port, tty, filp);
 }
diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
index 1059ed3..d70846a 100644
--- a/net/bridge/netfilter/ebtables.c
+++ b/net/bridge/netfilter/ebtables.c
@@ -1524,7 +1524,7 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 			tmp.valid_hooks = t->table->valid_hooks;
 		}
 		mutex_unlock(&ebt_mutex);
-		if (copy_to_user(user, &tmp, *len) != 0) {
+		if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0) {
 			BUGPRINT("c2u Didn't work\n");
 			ret = -EFAULT;
 			break;
@@ -2330,7 +2330,7 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
 			goto out;
 		tmp.valid_hooks = t->valid_hooks;
 
-		if (copy_to_user(user, &tmp, *len) != 0) {
+		if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0) {
 			ret = -EFAULT;
 			break;
 		}
@@ -2341,7 +2341,7 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
 		tmp.entries_size = t->table->entries_size;
 		tmp.valid_hooks = t->table->valid_hooks;
 
-		if (copy_to_user(user, &tmp, *len) != 0) {
+		if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0) {
 			ret = -EFAULT;
 			break;
 		}
diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
index 0f45522..dab651f 100644
--- a/net/caif/cfctrl.c
+++ b/net/caif/cfctrl.c
@@ -10,6 +10,7 @@
 #include <linux/spinlock.h>
 #include <linux/slab.h>
 #include <linux/pkt_sched.h>
+#include <linux/sched.h>
 #include <net/caif/caif_layer.h>
 #include <net/caif/cfpkt.h>
 #include <net/caif/cfctrl.h>
@@ -43,8 +44,8 @@ struct cflayer *cfctrl_create(void)
 	memset(&dev_info, 0, sizeof(dev_info));
 	dev_info.id = 0xff;
 	cfsrvl_init(&this->serv, 0, &dev_info, false);
-	atomic_set(&this->req_seq_no, 1);
-	atomic_set(&this->rsp_seq_no, 1);
+	atomic_set_unchecked(&this->req_seq_no, 1);
+	atomic_set_unchecked(&this->rsp_seq_no, 1);
 	this->serv.layer.receive = cfctrl_recv;
 	sprintf(this->serv.layer.name, "ctrl");
 	this->serv.layer.ctrlcmd = cfctrl_ctrlcmd;
@@ -130,8 +131,8 @@ static void cfctrl_insert_req(struct cfctrl *ctrl,
 			      struct cfctrl_request_info *req)
 {
 	spin_lock_bh(&ctrl->info_list_lock);
-	atomic_inc(&ctrl->req_seq_no);
-	req->sequence_no = atomic_read(&ctrl->req_seq_no);
+	atomic_inc_unchecked(&ctrl->req_seq_no);
+	req->sequence_no = atomic_read_unchecked(&ctrl->req_seq_no);
 	list_add_tail(&req->list, &ctrl->list);
 	spin_unlock_bh(&ctrl->info_list_lock);
 }
@@ -149,7 +150,7 @@ static struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
 			if (p != first)
 				pr_warn("Requests are not received in order\n");
 
-			atomic_set(&ctrl->rsp_seq_no,
+			atomic_set_unchecked(&ctrl->rsp_seq_no,
 					 p->sequence_no);
 			list_del(&p->list);
 			goto out;
diff --git a/net/can/af_can.c b/net/can/af_can.c
index ce82337..5d17b4d 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -884,7 +884,7 @@ static const struct net_proto_family can_family_ops = {
 };
 
 /* notifier block for netdevice event */
-static struct notifier_block can_netdev_notifier __read_mostly = {
+static struct notifier_block can_netdev_notifier = {
 	.notifier_call = can_notifier,
 };
 
diff --git a/net/can/bcm.c b/net/can/bcm.c
index dcb75c0..24b1b43 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1624,7 +1624,7 @@ static int __init bcm_module_init(void)
 	}
 
 	/* create /proc/net/can-bcm directory */
-	proc_dir = proc_mkdir("can-bcm", init_net.proc_net);
+	proc_dir = proc_mkdir_restrict("can-bcm", init_net.proc_net);
 	return 0;
 }
 
diff --git a/net/can/gw.c b/net/can/gw.c
index 050a211..bb9fe33 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -80,7 +80,6 @@ MODULE_PARM_DESC(max_hops,
 		 "default: " __stringify(CGW_DEFAULT_HOPS) ")");
 
 static HLIST_HEAD(cgw_list);
-static struct notifier_block notifier;
 
 static struct kmem_cache *cgw_cache __read_mostly;
 
@@ -947,6 +946,10 @@ static int cgw_remove_job(struct sk_buff *skb, struct nlmsghdr *nlh)
 	return err;
 }
 
+static struct notifier_block notifier = {
+	.notifier_call = cgw_notifier
+};
+
 static __init int cgw_module_init(void)
 {
 	/* sanitize given module parameter */
@@ -962,7 +965,6 @@ static __init int cgw_module_init(void)
 		return -ENOMEM;
 
 	/* set notifier */
-	notifier.notifier_call = cgw_notifier;
 	register_netdevice_notifier(&notifier);
 
 	if (__rtnl_register(PF_CAN, RTM_GETROUTE, NULL, cgw_dump_jobs, NULL)) {
diff --git a/net/can/proc.c b/net/can/proc.c
index 1a19b98..df2b4ec 100644
--- a/net/can/proc.c
+++ b/net/can/proc.c
@@ -514,7 +514,7 @@ static void can_remove_proc_readentry(const char *name)
 void can_init_proc(void)
 {
 	/* create /proc/net/can directory */
-	can_dir = proc_mkdir("can", init_net.proc_net);
+	can_dir = proc_mkdir_restrict("can", init_net.proc_net);
 
 	if (!can_dir) {
 		printk(KERN_INFO "can: failed to create /proc/net/can . "
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 3d9ddc2..ca5d5b6 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -187,7 +187,7 @@ static void con_fault(struct ceph_connection *con);
 #define MAX_ADDR_STR_LEN	64	/* 54 is enough */
 
 static char addr_str[ADDR_STR_COUNT][MAX_ADDR_STR_LEN];
-static atomic_t addr_str_seq = ATOMIC_INIT(0);
+static atomic_unchecked_t addr_str_seq = ATOMIC_INIT(0);
 
 static struct page *zero_page;		/* used in certain error cases */
 
@@ -198,7 +198,7 @@ const char *ceph_pr_addr(const struct sockaddr_storage *ss)
 	struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
 	struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
 
-	i = atomic_inc_return(&addr_str_seq) & ADDR_STR_COUNT_MASK;
+	i = atomic_inc_return_unchecked(&addr_str_seq) & ADDR_STR_COUNT_MASK;
 	s = addr_str[i];
 
 	switch (ss->ss_family) {
diff --git a/net/compat.c b/net/compat.c
index bc8aeef..f9c070c 100644
--- a/net/compat.c
+++ b/net/compat.c
@@ -73,9 +73,9 @@ int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
 		return -EFAULT;
 	if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
 		kmsg->msg_namelen = sizeof(struct sockaddr_storage);
-	kmsg->msg_name = compat_ptr(tmp1);
-	kmsg->msg_iov = compat_ptr(tmp2);
-	kmsg->msg_control = compat_ptr(tmp3);
+	kmsg->msg_name = (void __force_kernel *)compat_ptr(tmp1);
+	kmsg->msg_iov = (void __force_kernel *)compat_ptr(tmp2);
+	kmsg->msg_control = (void __force_kernel *)compat_ptr(tmp3);
 	return 0;
 }
 
@@ -87,7 +87,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
 
 	if (kern_msg->msg_name && kern_msg->msg_namelen) {
 		if (mode == VERIFY_READ) {
-			int err = move_addr_to_kernel(kern_msg->msg_name,
+			int err = move_addr_to_kernel((void __force_user *)kern_msg->msg_name,
 						      kern_msg->msg_namelen,
 						      kern_address);
 			if (err < 0)
@@ -100,7 +100,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
 	}
 
 	tot_len = iov_from_user_compat_to_kern(kern_iov,
-					  (struct compat_iovec __user *)kern_msg->msg_iov,
+					  (struct compat_iovec __force_user *)kern_msg->msg_iov,
 					  kern_msg->msg_iovlen);
 	if (tot_len >= 0)
 		kern_msg->msg_iov = kern_iov;
@@ -120,20 +120,20 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
 
 #define CMSG_COMPAT_FIRSTHDR(msg)			\
 	(((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ?	\
-	 (struct compat_cmsghdr __user *)((msg)->msg_control) :		\
+	 (struct compat_cmsghdr __force_user *)((msg)->msg_control) :		\
 	 (struct compat_cmsghdr __user *)NULL)
 
 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
 	((ucmlen) >= sizeof(struct compat_cmsghdr) && \
 	 (ucmlen) <= (unsigned long) \
 	 ((mhdr)->msg_controllen - \
-	  ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
+	  ((char __force_kernel *)(ucmsg) - (char *)(mhdr)->msg_control)))
 
 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
 		struct compat_cmsghdr __user *cmsg, int cmsg_len)
 {
 	char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
-	if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
+	if ((unsigned long)(ptr + 1 - (char __force_user *)msg->msg_control) >
 			msg->msg_controllen)
 		return NULL;
 	return (struct compat_cmsghdr __user *)ptr;
@@ -223,7 +223,7 @@ Efault:
 
 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
 {
-	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
+	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __force_user *) kmsg->msg_control;
 	struct compat_cmsghdr cmhdr;
 	struct compat_timeval ctv;
 	struct compat_timespec cts[3];
@@ -279,7 +279,7 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat
 
 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
 {
-	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
+	struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __force_user *) kmsg->msg_control;
 	int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
 	int fdnum = scm->fp->count;
 	struct file **fp = scm->fp->fp;
@@ -367,7 +367,7 @@ static int do_set_sock_timeout(struct socket *sock, int level,
 		return -EFAULT;
 	old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
+	err = sock_setsockopt(sock, level, optname, (char __force_user *)&ktime, sizeof(ktime));
 	set_fs(old_fs);
 
 	return err;
@@ -428,7 +428,7 @@ static int do_get_sock_timeout(struct socket *sock, int level, int optname,
 	len = sizeof(ktime);
 	old_fs = get_fs();
 	set_fs(KERNEL_DS);
-	err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
+	err = sock_getsockopt(sock, level, optname, (char __force_user *) &ktime, (int __force_user *)&len);
 	set_fs(old_fs);
 
 	if (!err) {
@@ -571,7 +571,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	case MCAST_JOIN_GROUP:
 	case MCAST_LEAVE_GROUP:
 	{
-		struct compat_group_req __user *gr32 = (void *)optval;
+		struct compat_group_req __user *gr32 = (void __user *)optval;
 		struct group_req __user *kgr =
 			compat_alloc_user_space(sizeof(struct group_req));
 		u32 interface;
@@ -592,7 +592,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	case MCAST_BLOCK_SOURCE:
 	case MCAST_UNBLOCK_SOURCE:
 	{
-		struct compat_group_source_req __user *gsr32 = (void *)optval;
+		struct compat_group_source_req __user *gsr32 = (void __user *)optval;
 		struct group_source_req __user *kgsr = compat_alloc_user_space(
 			sizeof(struct group_source_req));
 		u32 interface;
@@ -613,7 +613,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
 	}
 	case MCAST_MSFILTER:
 	{
-		struct compat_group_filter __user *gf32 = (void *)optval;
+		struct compat_group_filter __user *gf32 = (void __user *)optval;
 		struct group_filter __user *kgf;
 		u32 interface, fmode, numsrc;
 
@@ -651,7 +651,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
 	char __user *optval, int __user *optlen,
 	int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
 {
-	struct compat_group_filter __user *gf32 = (void *)optval;
+	struct compat_group_filter __user *gf32 = (void __user *)optval;
 	struct group_filter __user *kgf;
 	int __user	*koptlen;
 	u32 interface, fmode, numsrc;
@@ -804,7 +804,7 @@ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
 
 	if (call < SYS_SOCKET || call > SYS_SENDMMSG)
 		return -EINVAL;
-	if (copy_from_user(a, args, nas[call]))
+	if (nas[call] > sizeof a || copy_from_user(a, args, nas[call]))
 		return -EFAULT;
 	a0 = a[0];
 	a1 = a[1];
diff --git a/net/core/Makefile b/net/core/Makefile
index 71093d9..a8a035b 100644
--- a/net/core/Makefile
+++ b/net/core/Makefile
@@ -21,6 +21,5 @@ obj-$(CONFIG_FIB_RULES) += fib_rules.o
 obj-$(CONFIG_TRACEPOINTS) += net-traces.o
 obj-$(CONFIG_NET_DROP_MONITOR) += drop_monitor.o
 obj-$(CONFIG_NETWORK_PHY_TIMESTAMPING) += timestamping.o
-obj-$(CONFIG_NET_PTP_CLASSIFY) += ptp_classifier.o
 obj-$(CONFIG_CGROUP_NET_PRIO) += netprio_cgroup.o
 obj-$(CONFIG_CGROUP_NET_CLASSID) += netclassid_cgroup.o
diff --git a/net/core/datagram.c b/net/core/datagram.c
index 488dd1a..7179f0f 100644
--- a/net/core/datagram.c
+++ b/net/core/datagram.c
@@ -301,7 +301,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags)
 	}
 
 	kfree_skb(skb);
-	atomic_inc(&sk->sk_drops);
+	atomic_inc_unchecked(&sk->sk_drops);
 	sk_mem_reclaim_partial(sk);
 
 	return err;
diff --git a/net/core/dev.c b/net/core/dev.c
index 367a586..ef2fe17 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1672,14 +1672,14 @@ int __dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
 {
 	if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
 		if (skb_copy_ubufs(skb, GFP_ATOMIC)) {
-			atomic_long_inc(&dev->rx_dropped);
+			atomic_long_inc_unchecked(&dev->rx_dropped);
 			kfree_skb(skb);
 			return NET_RX_DROP;
 		}
 	}
 
 	if (unlikely(!is_skb_forwardable(dev, skb))) {
-		atomic_long_inc(&dev->rx_dropped);
+		atomic_long_inc_unchecked(&dev->rx_dropped);
 		kfree_skb(skb);
 		return NET_RX_DROP;
 	}
@@ -2476,7 +2476,7 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
 
 struct dev_gso_cb {
 	void (*destructor)(struct sk_buff *skb);
-};
+} __no_const;
 
 #define DEV_GSO_CB(skb) ((struct dev_gso_cb *)(skb)->cb)
 
@@ -2932,7 +2932,7 @@ recursion_alert:
 	rc = -ENETDOWN;
 	rcu_read_unlock_bh();
 
-	atomic_long_inc(&dev->tx_dropped);
+	atomic_long_inc_unchecked(&dev->tx_dropped);
 	kfree_skb(skb);
 	return rc;
 out:
@@ -3276,7 +3276,7 @@ enqueue:
 
 	local_irq_restore(flags);
 
-	atomic_long_inc(&skb->dev->rx_dropped);
+	atomic_long_inc_unchecked(&skb->dev->rx_dropped);
 	kfree_skb(skb);
 	return NET_RX_DROP;
 }
@@ -3353,7 +3353,7 @@ int netif_rx_ni(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(netif_rx_ni);
 
-static void net_tx_action(struct softirq_action *h)
+static __latent_entropy void net_tx_action(void)
 {
 	struct softnet_data *sd = &__get_cpu_var(softnet_data);
 
@@ -3686,7 +3686,7 @@ ncls:
 			ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
 	} else {
 drop:
-		atomic_long_inc(&skb->dev->rx_dropped);
+		atomic_long_inc_unchecked(&skb->dev->rx_dropped);
 		kfree_skb(skb);
 		/* Jamal, now you will not able to escape explaining
 		 * me how you were going to use this. :-)
@@ -4406,7 +4406,7 @@ void netif_napi_del(struct napi_struct *napi)
 }
 EXPORT_SYMBOL(netif_napi_del);
 
-static void net_rx_action(struct softirq_action *h)
+static __latent_entropy void net_rx_action(void)
 {
 	struct softnet_data *sd = &__get_cpu_var(softnet_data);
 	unsigned long time_limit = jiffies + 2;
@@ -6403,8 +6403,8 @@ struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
 	} else {
 		netdev_stats_to_stats64(storage, &dev->stats);
 	}
-	storage->rx_dropped += atomic_long_read(&dev->rx_dropped);
-	storage->tx_dropped += atomic_long_read(&dev->tx_dropped);
+	storage->rx_dropped += atomic_long_read_unchecked(&dev->rx_dropped);
+	storage->tx_dropped += atomic_long_read_unchecked(&dev->tx_dropped);
 	return storage;
 }
 EXPORT_SYMBOL(dev_get_stats);
diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
index cf999e0..c59a975 100644
--- a/net/core/dev_ioctl.c
+++ b/net/core/dev_ioctl.c
@@ -366,9 +366,13 @@ void dev_load(struct net *net, const char *name)
 	if (no_module && capable(CAP_NET_ADMIN))
 		no_module = request_module("netdev-%s", name);
 	if (no_module && capable(CAP_SYS_MODULE)) {
+#ifdef CONFIG_GRKERNSEC_MODHARDEN
+		___request_module(true, "grsec_modharden_netdev", "%s", name);
+#else
 		if (!request_module("%s", name))
 			pr_warn("Loading kernel module for a network device with CAP_SYS_MODULE (deprecated).  Use CAP_NET_ADMIN and alias netdev-%s instead.\n",
 				name);
+#endif
 	}
 }
 EXPORT_SYMBOL(dev_load);
diff --git a/net/core/filter.c b/net/core/filter.c
index 1dbf646..0f95703 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1,16 +1,11 @@
 /*
  * Linux Socket Filter - Kernel level socket filtering
  *
- * Based on the design of the Berkeley Packet Filter. The new
- * internal format has been designed by PLUMgrid:
+ * Author:
+ *     Jay Schulist <jschlst@samba.org>
  *
- *	Copyright (c) 2011 - 2014 PLUMgrid, http://plumgrid.com
- *
- * Authors:
- *
- *	Jay Schulist <jschlst@samba.org>
- *	Alexei Starovoitov <ast@plumgrid.com>
- *	Daniel Borkmann <dborkman@redhat.com>
+ * Based on the design of:
+ *     - The Berkeley Packet Filter
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -45,27 +40,6 @@
 #include <linux/seccomp.h>
 #include <linux/if_vlan.h>
 
-/* Registers */
-#define BPF_R0	regs[BPF_REG_0]
-#define BPF_R1	regs[BPF_REG_1]
-#define BPF_R2	regs[BPF_REG_2]
-#define BPF_R3	regs[BPF_REG_3]
-#define BPF_R4	regs[BPF_REG_4]
-#define BPF_R5	regs[BPF_REG_5]
-#define BPF_R6	regs[BPF_REG_6]
-#define BPF_R7	regs[BPF_REG_7]
-#define BPF_R8	regs[BPF_REG_8]
-#define BPF_R9	regs[BPF_REG_9]
-#define BPF_R10	regs[BPF_REG_10]
-
-/* Named registers */
-#define DST	regs[insn->dst_reg]
-#define SRC	regs[insn->src_reg]
-#define FP	regs[BPF_REG_FP]
-#define ARG1	regs[BPF_REG_ARG1]
-#define CTX	regs[BPF_REG_CTX]
-#define IMM	insn->imm
-
 /* No hurry in this branch
  *
  * Exported for the bpf jit load helper.
@@ -78,9 +52,9 @@ void *bpf_internal_load_pointer_neg_helper(const struct sk_buff *skb, int k, uns
 		ptr = skb_network_header(skb) + k - SKF_NET_OFF;
 	else if (k >= SKF_LL_OFF)
 		ptr = skb_mac_header(skb) + k - SKF_LL_OFF;
+
 	if (ptr >= skb->head && ptr + size <= skb_tail_pointer(skb))
 		return ptr;
-
 	return NULL;
 }
 
@@ -89,7 +63,6 @@ static inline void *load_pointer(const struct sk_buff *skb, int k,
 {
 	if (k >= 0)
 		return skb_header_pointer(skb, k, size, buffer);
-
 	return bpf_internal_load_pointer_neg_helper(skb, k, size);
 }
 
@@ -135,960 +108,309 @@ int sk_filter(struct sock *sk, struct sk_buff *skb)
 }
 EXPORT_SYMBOL(sk_filter);
 
-/* Base function for offset calculation. Needs to go into .text section,
- * therefore keeping it non-static as well; will also be used by JITs
- * anyway later on, so do not let the compiler omit it.
- */
-noinline u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5)
-{
-	return 0;
-}
-
 /**
- *	__sk_run_filter - run a filter on a given context
- *	@ctx: buffer to run the filter on
- *	@insn: filter to apply
+ *	sk_run_filter - run a filter on a socket
+ *	@skb: buffer to run the filter on
+ *	@fentry: filter to apply
  *
- * Decode and apply filter instructions to the skb->data. Return length to
- * keep, 0 for none. @ctx is the data we are operating on, @insn is the
- * array of filter instructions.
+ * Decode and apply filter instructions to the skb->data.
+ * Return length to keep, 0 for none. @skb is the data we are
+ * filtering, @filter is the array of filter instructions.
+ * Because all jumps are guaranteed to be before last instruction,
+ * and last instruction guaranteed to be a RET, we dont need to check
+ * flen. (We used to pass to this function the length of filter)
  */
-static unsigned int __sk_run_filter(void *ctx, const struct sock_filter_int *insn)
+unsigned int sk_run_filter(const struct sk_buff *skb,
+			   const struct sock_filter *fentry)
 {
-	u64 stack[MAX_BPF_STACK / sizeof(u64)];
-	u64 regs[MAX_BPF_REG], tmp;
-	static const void *jumptable[256] = {
-		[0 ... 255] = &&default_label,
-		/* Now overwrite non-defaults ... */
-		/* 32 bit ALU operations */
-		[BPF_ALU | BPF_ADD | BPF_X] = &&ALU_ADD_X,
-		[BPF_ALU | BPF_ADD | BPF_K] = &&ALU_ADD_K,
-		[BPF_ALU | BPF_SUB | BPF_X] = &&ALU_SUB_X,
-		[BPF_ALU | BPF_SUB | BPF_K] = &&ALU_SUB_K,
-		[BPF_ALU | BPF_AND | BPF_X] = &&ALU_AND_X,
-		[BPF_ALU | BPF_AND | BPF_K] = &&ALU_AND_K,
-		[BPF_ALU | BPF_OR | BPF_X]  = &&ALU_OR_X,
-		[BPF_ALU | BPF_OR | BPF_K]  = &&ALU_OR_K,
-		[BPF_ALU | BPF_LSH | BPF_X] = &&ALU_LSH_X,
-		[BPF_ALU | BPF_LSH | BPF_K] = &&ALU_LSH_K,
-		[BPF_ALU | BPF_RSH | BPF_X] = &&ALU_RSH_X,
-		[BPF_ALU | BPF_RSH | BPF_K] = &&ALU_RSH_K,
-		[BPF_ALU | BPF_XOR | BPF_X] = &&ALU_XOR_X,
-		[BPF_ALU | BPF_XOR | BPF_K] = &&ALU_XOR_K,
-		[BPF_ALU | BPF_MUL | BPF_X] = &&ALU_MUL_X,
-		[BPF_ALU | BPF_MUL | BPF_K] = &&ALU_MUL_K,
-		[BPF_ALU | BPF_MOV | BPF_X] = &&ALU_MOV_X,
-		[BPF_ALU | BPF_MOV | BPF_K] = &&ALU_MOV_K,
-		[BPF_ALU | BPF_DIV | BPF_X] = &&ALU_DIV_X,
-		[BPF_ALU | BPF_DIV | BPF_K] = &&ALU_DIV_K,
-		[BPF_ALU | BPF_MOD | BPF_X] = &&ALU_MOD_X,
-		[BPF_ALU | BPF_MOD | BPF_K] = &&ALU_MOD_K,
-		[BPF_ALU | BPF_NEG] = &&ALU_NEG,
-		[BPF_ALU | BPF_END | BPF_TO_BE] = &&ALU_END_TO_BE,
-		[BPF_ALU | BPF_END | BPF_TO_LE] = &&ALU_END_TO_LE,
-		/* 64 bit ALU operations */
-		[BPF_ALU64 | BPF_ADD | BPF_X] = &&ALU64_ADD_X,
-		[BPF_ALU64 | BPF_ADD | BPF_K] = &&ALU64_ADD_K,
-		[BPF_ALU64 | BPF_SUB | BPF_X] = &&ALU64_SUB_X,
-		[BPF_ALU64 | BPF_SUB | BPF_K] = &&ALU64_SUB_K,
-		[BPF_ALU64 | BPF_AND | BPF_X] = &&ALU64_AND_X,
-		[BPF_ALU64 | BPF_AND | BPF_K] = &&ALU64_AND_K,
-		[BPF_ALU64 | BPF_OR | BPF_X] = &&ALU64_OR_X,
-		[BPF_ALU64 | BPF_OR | BPF_K] = &&ALU64_OR_K,
-		[BPF_ALU64 | BPF_LSH | BPF_X] = &&ALU64_LSH_X,
-		[BPF_ALU64 | BPF_LSH | BPF_K] = &&ALU64_LSH_K,
-		[BPF_ALU64 | BPF_RSH | BPF_X] = &&ALU64_RSH_X,
-		[BPF_ALU64 | BPF_RSH | BPF_K] = &&ALU64_RSH_K,
-		[BPF_ALU64 | BPF_XOR | BPF_X] = &&ALU64_XOR_X,
-		[BPF_ALU64 | BPF_XOR | BPF_K] = &&ALU64_XOR_K,
-		[BPF_ALU64 | BPF_MUL | BPF_X] = &&ALU64_MUL_X,
-		[BPF_ALU64 | BPF_MUL | BPF_K] = &&ALU64_MUL_K,
-		[BPF_ALU64 | BPF_MOV | BPF_X] = &&ALU64_MOV_X,
-		[BPF_ALU64 | BPF_MOV | BPF_K] = &&ALU64_MOV_K,
-		[BPF_ALU64 | BPF_ARSH | BPF_X] = &&ALU64_ARSH_X,
-		[BPF_ALU64 | BPF_ARSH | BPF_K] = &&ALU64_ARSH_K,
-		[BPF_ALU64 | BPF_DIV | BPF_X] = &&ALU64_DIV_X,
-		[BPF_ALU64 | BPF_DIV | BPF_K] = &&ALU64_DIV_K,
-		[BPF_ALU64 | BPF_MOD | BPF_X] = &&ALU64_MOD_X,
-		[BPF_ALU64 | BPF_MOD | BPF_K] = &&ALU64_MOD_K,
-		[BPF_ALU64 | BPF_NEG] = &&ALU64_NEG,
-		/* Call instruction */
-		[BPF_JMP | BPF_CALL] = &&JMP_CALL,
-		/* Jumps */
-		[BPF_JMP | BPF_JA] = &&JMP_JA,
-		[BPF_JMP | BPF_JEQ | BPF_X] = &&JMP_JEQ_X,
-		[BPF_JMP | BPF_JEQ | BPF_K] = &&JMP_JEQ_K,
-		[BPF_JMP | BPF_JNE | BPF_X] = &&JMP_JNE_X,
-		[BPF_JMP | BPF_JNE | BPF_K] = &&JMP_JNE_K,
-		[BPF_JMP | BPF_JGT | BPF_X] = &&JMP_JGT_X,
-		[BPF_JMP | BPF_JGT | BPF_K] = &&JMP_JGT_K,
-		[BPF_JMP | BPF_JGE | BPF_X] = &&JMP_JGE_X,
-		[BPF_JMP | BPF_JGE | BPF_K] = &&JMP_JGE_K,
-		[BPF_JMP | BPF_JSGT | BPF_X] = &&JMP_JSGT_X,
-		[BPF_JMP | BPF_JSGT | BPF_K] = &&JMP_JSGT_K,
-		[BPF_JMP | BPF_JSGE | BPF_X] = &&JMP_JSGE_X,
-		[BPF_JMP | BPF_JSGE | BPF_K] = &&JMP_JSGE_K,
-		[BPF_JMP | BPF_JSET | BPF_X] = &&JMP_JSET_X,
-		[BPF_JMP | BPF_JSET | BPF_K] = &&JMP_JSET_K,
-		/* Program return */
-		[BPF_JMP | BPF_EXIT] = &&JMP_EXIT,
-		/* Store instructions */
-		[BPF_STX | BPF_MEM | BPF_B] = &&STX_MEM_B,
-		[BPF_STX | BPF_MEM | BPF_H] = &&STX_MEM_H,
-		[BPF_STX | BPF_MEM | BPF_W] = &&STX_MEM_W,
-		[BPF_STX | BPF_MEM | BPF_DW] = &&STX_MEM_DW,
-		[BPF_STX | BPF_XADD | BPF_W] = &&STX_XADD_W,
-		[BPF_STX | BPF_XADD | BPF_DW] = &&STX_XADD_DW,
-		[BPF_ST | BPF_MEM | BPF_B] = &&ST_MEM_B,
-		[BPF_ST | BPF_MEM | BPF_H] = &&ST_MEM_H,
-		[BPF_ST | BPF_MEM | BPF_W] = &&ST_MEM_W,
-		[BPF_ST | BPF_MEM | BPF_DW] = &&ST_MEM_DW,
-		/* Load instructions */
-		[BPF_LDX | BPF_MEM | BPF_B] = &&LDX_MEM_B,
-		[BPF_LDX | BPF_MEM | BPF_H] = &&LDX_MEM_H,
-		[BPF_LDX | BPF_MEM | BPF_W] = &&LDX_MEM_W,
-		[BPF_LDX | BPF_MEM | BPF_DW] = &&LDX_MEM_DW,
-		[BPF_LD | BPF_ABS | BPF_W] = &&LD_ABS_W,
-		[BPF_LD | BPF_ABS | BPF_H] = &&LD_ABS_H,
-		[BPF_LD | BPF_ABS | BPF_B] = &&LD_ABS_B,
-		[BPF_LD | BPF_IND | BPF_W] = &&LD_IND_W,
-		[BPF_LD | BPF_IND | BPF_H] = &&LD_IND_H,
-		[BPF_LD | BPF_IND | BPF_B] = &&LD_IND_B,
-	};
 	void *ptr;
-	int off;
-
-#define CONT	 ({ insn++; goto select_insn; })
-#define CONT_JMP ({ insn++; goto select_insn; })
-
-	FP = (u64) (unsigned long) &stack[ARRAY_SIZE(stack)];
-	ARG1 = (u64) (unsigned long) ctx;
-
-	/* Registers used in classic BPF programs need to be reset first. */
-	regs[BPF_REG_A] = 0;
-	regs[BPF_REG_X] = 0;
-
-select_insn:
-	goto *jumptable[insn->code];
-
-	/* ALU */
-#define ALU(OPCODE, OP)			\
-	ALU64_##OPCODE##_X:		\
-		DST = DST OP SRC;	\
-		CONT;			\
-	ALU_##OPCODE##_X:		\
-		DST = (u32) DST OP (u32) SRC;	\
-		CONT;			\
-	ALU64_##OPCODE##_K:		\
-		DST = DST OP IMM;		\
-		CONT;			\
-	ALU_##OPCODE##_K:		\
-		DST = (u32) DST OP (u32) IMM;	\
-		CONT;
-
-	ALU(ADD,  +)
-	ALU(SUB,  -)
-	ALU(AND,  &)
-	ALU(OR,   |)
-	ALU(LSH, <<)
-	ALU(RSH, >>)
-	ALU(XOR,  ^)
-	ALU(MUL,  *)
-#undef ALU
-	ALU_NEG:
-		DST = (u32) -DST;
-		CONT;
-	ALU64_NEG:
-		DST = -DST;
-		CONT;
-	ALU_MOV_X:
-		DST = (u32) SRC;
-		CONT;
-	ALU_MOV_K:
-		DST = (u32) IMM;
-		CONT;
-	ALU64_MOV_X:
-		DST = SRC;
-		CONT;
-	ALU64_MOV_K:
-		DST = IMM;
-		CONT;
-	ALU64_ARSH_X:
-		(*(s64 *) &DST) >>= SRC;
-		CONT;
-	ALU64_ARSH_K:
-		(*(s64 *) &DST) >>= IMM;
-		CONT;
-	ALU64_MOD_X:
-		if (unlikely(SRC == 0))
-			return 0;
-		tmp = DST;
-		DST = do_div(tmp, SRC);
-		CONT;
-	ALU_MOD_X:
-		if (unlikely(SRC == 0))
-			return 0;
-		tmp = (u32) DST;
-		DST = do_div(tmp, (u32) SRC);
-		CONT;
-	ALU64_MOD_K:
-		tmp = DST;
-		DST = do_div(tmp, IMM);
-		CONT;
-	ALU_MOD_K:
-		tmp = (u32) DST;
-		DST = do_div(tmp, (u32) IMM);
-		CONT;
-	ALU64_DIV_X:
-		if (unlikely(SRC == 0))
-			return 0;
-		do_div(DST, SRC);
-		CONT;
-	ALU_DIV_X:
-		if (unlikely(SRC == 0))
-			return 0;
-		tmp = (u32) DST;
-		do_div(tmp, (u32) SRC);
-		DST = (u32) tmp;
-		CONT;
-	ALU64_DIV_K:
-		do_div(DST, IMM);
-		CONT;
-	ALU_DIV_K:
-		tmp = (u32) DST;
-		do_div(tmp, (u32) IMM);
-		DST = (u32) tmp;
-		CONT;
-	ALU_END_TO_BE:
-		switch (IMM) {
-		case 16:
-			DST = (__force u16) cpu_to_be16(DST);
-			break;
-		case 32:
-			DST = (__force u32) cpu_to_be32(DST);
-			break;
-		case 64:
-			DST = (__force u64) cpu_to_be64(DST);
-			break;
-		}
-		CONT;
-	ALU_END_TO_LE:
-		switch (IMM) {
-		case 16:
-			DST = (__force u16) cpu_to_le16(DST);
-			break;
-		case 32:
-			DST = (__force u32) cpu_to_le32(DST);
-			break;
-		case 64:
-			DST = (__force u64) cpu_to_le64(DST);
-			break;
-		}
-		CONT;
-
-	/* CALL */
-	JMP_CALL:
-		/* Function call scratches BPF_R1-BPF_R5 registers,
-		 * preserves BPF_R6-BPF_R9, and stores return value
-		 * into BPF_R0.
-		 */
-		BPF_R0 = (__bpf_call_base + insn->imm)(BPF_R1, BPF_R2, BPF_R3,
-						       BPF_R4, BPF_R5);
-		CONT;
-
-	/* JMP */
-	JMP_JA:
-		insn += insn->off;
-		CONT;
-	JMP_JEQ_X:
-		if (DST == SRC) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JEQ_K:
-		if (DST == IMM) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JNE_X:
-		if (DST != SRC) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JNE_K:
-		if (DST != IMM) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JGT_X:
-		if (DST > SRC) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JGT_K:
-		if (DST > IMM) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JGE_X:
-		if (DST >= SRC) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JGE_K:
-		if (DST >= IMM) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JSGT_X:
-		if (((s64) DST) > ((s64) SRC)) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JSGT_K:
-		if (((s64) DST) > ((s64) IMM)) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JSGE_X:
-		if (((s64) DST) >= ((s64) SRC)) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JSGE_K:
-		if (((s64) DST) >= ((s64) IMM)) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JSET_X:
-		if (DST & SRC) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_JSET_K:
-		if (DST & IMM) {
-			insn += insn->off;
-			CONT_JMP;
-		}
-		CONT;
-	JMP_EXIT:
-		return BPF_R0;
-
-	/* STX and ST and LDX*/
-#define LDST(SIZEOP, SIZE)						\
-	STX_MEM_##SIZEOP:						\
-		*(SIZE *)(unsigned long) (DST + insn->off) = SRC;	\
-		CONT;							\
-	ST_MEM_##SIZEOP:						\
-		*(SIZE *)(unsigned long) (DST + insn->off) = IMM;	\
-		CONT;							\
-	LDX_MEM_##SIZEOP:						\
-		DST = *(SIZE *)(unsigned long) (SRC + insn->off);	\
-		CONT;
-
-	LDST(B,   u8)
-	LDST(H,  u16)
-	LDST(W,  u32)
-	LDST(DW, u64)
-#undef LDST
-	STX_XADD_W: /* lock xadd *(u32 *)(dst_reg + off16) += src_reg */
-		atomic_add((u32) SRC, (atomic_t *)(unsigned long)
-			   (DST + insn->off));
-		CONT;
-	STX_XADD_DW: /* lock xadd *(u64 *)(dst_reg + off16) += src_reg */
-		atomic64_add((u64) SRC, (atomic64_t *)(unsigned long)
-			     (DST + insn->off));
-		CONT;
-	LD_ABS_W: /* BPF_R0 = ntohl(*(u32 *) (skb->data + imm32)) */
-		off = IMM;
-load_word:
-		/* BPF_LD + BPD_ABS and BPF_LD + BPF_IND insns are
-		 * only appearing in the programs where ctx ==
-		 * skb. All programs keep 'ctx' in regs[BPF_REG_CTX]
-		 * == BPF_R6, sk_convert_filter() saves it in BPF_R6,
-		 * internal BPF verifier will check that BPF_R6 ==
-		 * ctx.
-		 *
-		 * BPF_ABS and BPF_IND are wrappers of function calls,
-		 * so they scratch BPF_R1-BPF_R5 registers, preserve
-		 * BPF_R6-BPF_R9, and store return value into BPF_R0.
-		 *
-		 * Implicit input:
-		 *   ctx == skb == BPF_R6 == CTX
-		 *
-		 * Explicit input:
-		 *   SRC == any register
-		 *   IMM == 32-bit immediate
-		 *
-		 * Output:
-		 *   BPF_R0 - 8/16/32-bit skb data converted to cpu endianness
-		 */
-
-		ptr = load_pointer((struct sk_buff *) (unsigned long) CTX, off, 4, &tmp);
-		if (likely(ptr != NULL)) {
-			BPF_R0 = get_unaligned_be32(ptr);
-			CONT;
-		}
-
-		return 0;
-	LD_ABS_H: /* BPF_R0 = ntohs(*(u16 *) (skb->data + imm32)) */
-		off = IMM;
-load_half:
-		ptr = load_pointer((struct sk_buff *) (unsigned long) CTX, off, 2, &tmp);
-		if (likely(ptr != NULL)) {
-			BPF_R0 = get_unaligned_be16(ptr);
-			CONT;
-		}
-
-		return 0;
-	LD_ABS_B: /* BPF_R0 = *(u8 *) (skb->data + imm32) */
-		off = IMM;
-load_byte:
-		ptr = load_pointer((struct sk_buff *) (unsigned long) CTX, off, 1, &tmp);
-		if (likely(ptr != NULL)) {
-			BPF_R0 = *(u8 *)ptr;
-			CONT;
-		}
-
-		return 0;
-	LD_IND_W: /* BPF_R0 = ntohl(*(u32 *) (skb->data + src_reg + imm32)) */
-		off = IMM + SRC;
-		goto load_word;
-	LD_IND_H: /* BPF_R0 = ntohs(*(u16 *) (skb->data + src_reg + imm32)) */
-		off = IMM + SRC;
-		goto load_half;
-	LD_IND_B: /* BPF_R0 = *(u8 *) (skb->data + src_reg + imm32) */
-		off = IMM + SRC;
-		goto load_byte;
-
-	default_label:
-		/* If we ever reach this, we have a bug somewhere. */
-		WARN_RATELIMIT(1, "unknown opcode %02x\n", insn->code);
-		return 0;
-}
-
-/* Helper to find the offset of pkt_type in sk_buff structure. We want
- * to make sure its still a 3bit field starting at a byte boundary;
- * taken from arch/x86/net/bpf_jit_comp.c.
- */
-#ifdef __BIG_ENDIAN_BITFIELD
-#define PKT_TYPE_MAX	(7 << 5)
+	u32 A = 0;			/* Accumulator */
+	u32 X = 0;			/* Index Register */
+	u32 mem[BPF_MEMWORDS] = {};	/* Scratch Memory Store */
+	u32 tmp;
+	int k;
+
+	/*
+	 * Process array of filter instructions.
+	 */
+	for (;; fentry++) {
+#if defined(CONFIG_X86_32)
+#define	K (fentry->k)
 #else
-#define PKT_TYPE_MAX	7
+		const u32 K = fentry->k;
 #endif
-static unsigned int pkt_type_offset(void)
-{
-	struct sk_buff skb_probe = { .pkt_type = ~0, };
-	u8 *ct = (u8 *) &skb_probe;
-	unsigned int off;
 
-	for (off = 0; off < sizeof(struct sk_buff); off++) {
-		if (ct[off] == PKT_TYPE_MAX)
-			return off;
-	}
-
-	pr_err_once("Please fix %s, as pkt_type couldn't be found!\n", __func__);
-	return -1;
-}
-
-static u64 __skb_get_pay_offset(u64 ctx, u64 a, u64 x, u64 r4, u64 r5)
-{
-	return __skb_get_poff((struct sk_buff *)(unsigned long) ctx);
-}
-
-static u64 __skb_get_nlattr(u64 ctx, u64 a, u64 x, u64 r4, u64 r5)
-{
-	struct sk_buff *skb = (struct sk_buff *)(unsigned long) ctx;
-	struct nlattr *nla;
-
-	if (skb_is_nonlinear(skb))
-		return 0;
-
-	if (skb->len < sizeof(struct nlattr))
-		return 0;
-
-	if (a > skb->len - sizeof(struct nlattr))
-		return 0;
-
-	nla = nla_find((struct nlattr *) &skb->data[a], skb->len - a, x);
-	if (nla)
-		return (void *) nla - (void *) skb->data;
-
-	return 0;
-}
-
-static u64 __skb_get_nlattr_nest(u64 ctx, u64 a, u64 x, u64 r4, u64 r5)
-{
-	struct sk_buff *skb = (struct sk_buff *)(unsigned long) ctx;
-	struct nlattr *nla;
-
-	if (skb_is_nonlinear(skb))
-		return 0;
-
-	if (skb->len < sizeof(struct nlattr))
-		return 0;
-
-	if (a > skb->len - sizeof(struct nlattr))
-		return 0;
-
-	nla = (struct nlattr *) &skb->data[a];
-	if (nla->nla_len > skb->len - a)
-		return 0;
-
-	nla = nla_find_nested(nla, x);
-	if (nla)
-		return (void *) nla - (void *) skb->data;
-
-	return 0;
-}
-
-static u64 __get_raw_cpu_id(u64 ctx, u64 a, u64 x, u64 r4, u64 r5)
-{
-	return raw_smp_processor_id();
-}
-
-/* note that this only generates 32-bit random numbers */
-static u64 __get_random_u32(u64 ctx, u64 a, u64 x, u64 r4, u64 r5)
-{
-	return prandom_u32();
-}
-
-static bool convert_bpf_extensions(struct sock_filter *fp,
-				   struct sock_filter_int **insnp)
-{
-	struct sock_filter_int *insn = *insnp;
-
-	switch (fp->k) {
-	case SKF_AD_OFF + SKF_AD_PROTOCOL:
-		BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, protocol) != 2);
-
-		/* A = *(u16 *) (CTX + offsetof(protocol)) */
-		*insn++ = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_CTX,
-				      offsetof(struct sk_buff, protocol));
-		/* A = ntohs(A) [emitting a nop or swap16] */
-		*insn = BPF_ENDIAN(BPF_FROM_BE, BPF_REG_A, 16);
-		break;
-
-	case SKF_AD_OFF + SKF_AD_PKTTYPE:
-		*insn = BPF_LDX_MEM(BPF_B, BPF_REG_A, BPF_REG_CTX,
-				    pkt_type_offset());
-		if (insn->off < 0)
-			return false;
-		insn++;
-		*insn = BPF_ALU32_IMM(BPF_AND, BPF_REG_A, PKT_TYPE_MAX);
-#ifdef __BIG_ENDIAN_BITFIELD
-		insn++;
-                *insn = BPF_ALU32_IMM(BPF_RSH, BPF_REG_A, 5);
-#endif
-		break;
-
-	case SKF_AD_OFF + SKF_AD_IFINDEX:
-	case SKF_AD_OFF + SKF_AD_HATYPE:
-		BUILD_BUG_ON(FIELD_SIZEOF(struct net_device, ifindex) != 4);
-		BUILD_BUG_ON(FIELD_SIZEOF(struct net_device, type) != 2);
-		BUILD_BUG_ON(bytes_to_bpf_size(FIELD_SIZEOF(struct sk_buff, dev)) < 0);
-
-		*insn++ = BPF_LDX_MEM(bytes_to_bpf_size(FIELD_SIZEOF(struct sk_buff, dev)),
-				      BPF_REG_TMP, BPF_REG_CTX,
-				      offsetof(struct sk_buff, dev));
-		/* if (tmp != 0) goto pc + 1 */
-		*insn++ = BPF_JMP_IMM(BPF_JNE, BPF_REG_TMP, 0, 1);
-		*insn++ = BPF_EXIT_INSN();
-		if (fp->k == SKF_AD_OFF + SKF_AD_IFINDEX)
-			*insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_TMP,
-					    offsetof(struct net_device, ifindex));
-		else
-			*insn = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_TMP,
-					    offsetof(struct net_device, type));
-		break;
-
-	case SKF_AD_OFF + SKF_AD_MARK:
-		BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, mark) != 4);
-
-		*insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_CTX,
-				    offsetof(struct sk_buff, mark));
-		break;
-
-	case SKF_AD_OFF + SKF_AD_RXHASH:
-		BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, hash) != 4);
-
-		*insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_CTX,
-				    offsetof(struct sk_buff, hash));
-		break;
-
-	case SKF_AD_OFF + SKF_AD_QUEUE:
-		BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, queue_mapping) != 2);
-
-		*insn = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_CTX,
-				    offsetof(struct sk_buff, queue_mapping));
-		break;
-
-	case SKF_AD_OFF + SKF_AD_VLAN_TAG:
-	case SKF_AD_OFF + SKF_AD_VLAN_TAG_PRESENT:
-		BUILD_BUG_ON(FIELD_SIZEOF(struct sk_buff, vlan_tci) != 2);
-		BUILD_BUG_ON(VLAN_TAG_PRESENT != 0x1000);
-
-		/* A = *(u16 *) (CTX + offsetof(vlan_tci)) */
-		*insn++ = BPF_LDX_MEM(BPF_H, BPF_REG_A, BPF_REG_CTX,
-				      offsetof(struct sk_buff, vlan_tci));
-		if (fp->k == SKF_AD_OFF + SKF_AD_VLAN_TAG) {
-			*insn = BPF_ALU32_IMM(BPF_AND, BPF_REG_A,
-					      ~VLAN_TAG_PRESENT);
-		} else {
-			/* A >>= 12 */
-			*insn++ = BPF_ALU32_IMM(BPF_RSH, BPF_REG_A, 12);
-			/* A &= 1 */
-			*insn = BPF_ALU32_IMM(BPF_AND, BPF_REG_A, 1);
-		}
-		break;
-
-	case SKF_AD_OFF + SKF_AD_PAY_OFFSET:
-	case SKF_AD_OFF + SKF_AD_NLATTR:
-	case SKF_AD_OFF + SKF_AD_NLATTR_NEST:
-	case SKF_AD_OFF + SKF_AD_CPU:
-	case SKF_AD_OFF + SKF_AD_RANDOM:
-		/* arg1 = CTX */
-		*insn++ = BPF_MOV64_REG(BPF_REG_ARG1, BPF_REG_CTX);
-		/* arg2 = A */
-		*insn++ = BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_A);
-		/* arg3 = X */
-		*insn++ = BPF_MOV64_REG(BPF_REG_ARG3, BPF_REG_X);
-		/* Emit call(arg1=CTX, arg2=A, arg3=X) */
-		switch (fp->k) {
-		case SKF_AD_OFF + SKF_AD_PAY_OFFSET:
-			*insn = BPF_EMIT_CALL(__skb_get_pay_offset);
-			break;
-		case SKF_AD_OFF + SKF_AD_NLATTR:
-			*insn = BPF_EMIT_CALL(__skb_get_nlattr);
-			break;
-		case SKF_AD_OFF + SKF_AD_NLATTR_NEST:
-			*insn = BPF_EMIT_CALL(__skb_get_nlattr_nest);
-			break;
-		case SKF_AD_OFF + SKF_AD_CPU:
-			*insn = BPF_EMIT_CALL(__get_raw_cpu_id);
-			break;
-		case SKF_AD_OFF + SKF_AD_RANDOM:
-			*insn = BPF_EMIT_CALL(__get_random_u32);
-			break;
-		}
-		break;
-
-	case SKF_AD_OFF + SKF_AD_ALU_XOR_X:
-		/* A ^= X */
-		*insn = BPF_ALU32_REG(BPF_XOR, BPF_REG_A, BPF_REG_X);
-		break;
-
-	default:
-		/* This is just a dummy call to avoid letting the compiler
-		 * evict __bpf_call_base() as an optimization. Placed here
-		 * where no-one bothers.
-		 */
-		BUG_ON(__bpf_call_base(0, 0, 0, 0, 0) != 0);
-		return false;
-	}
-
-	*insnp = insn;
-	return true;
-}
-
-/**
- *	sk_convert_filter - convert filter program
- *	@prog: the user passed filter program
- *	@len: the length of the user passed filter program
- *	@new_prog: buffer where converted program will be stored
- *	@new_len: pointer to store length of converted program
- *
- * Remap 'sock_filter' style BPF instruction set to 'sock_filter_ext' style.
- * Conversion workflow:
- *
- * 1) First pass for calculating the new program length:
- *   sk_convert_filter(old_prog, old_len, NULL, &new_len)
- *
- * 2) 2nd pass to remap in two passes: 1st pass finds new
- *    jump offsets, 2nd pass remapping:
- *   new_prog = kmalloc(sizeof(struct sock_filter_int) * new_len);
- *   sk_convert_filter(old_prog, old_len, new_prog, &new_len);
- *
- * User BPF's register A is mapped to our BPF register 6, user BPF
- * register X is mapped to BPF register 7; frame pointer is always
- * register 10; Context 'void *ctx' is stored in register 1, that is,
- * for socket filters: ctx == 'struct sk_buff *', for seccomp:
- * ctx == 'struct seccomp_data *'.
- */
-int sk_convert_filter(struct sock_filter *prog, int len,
-		      struct sock_filter_int *new_prog, int *new_len)
-{
-	int new_flen = 0, pass = 0, target, i;
-	struct sock_filter_int *new_insn;
-	struct sock_filter *fp;
-	int *addrs = NULL;
-	u8 bpf_src;
-
-	BUILD_BUG_ON(BPF_MEMWORDS * sizeof(u32) > MAX_BPF_STACK);
-	BUILD_BUG_ON(BPF_REG_FP + 1 != MAX_BPF_REG);
-
-	if (len <= 0 || len > BPF_MAXINSNS)
-		return -EINVAL;
-
-	if (new_prog) {
-		addrs = kcalloc(len, sizeof(*addrs), GFP_KERNEL);
-		if (!addrs)
-			return -ENOMEM;
-	}
-
-do_pass:
-	new_insn = new_prog;
-	fp = prog;
-
-	if (new_insn)
-		*new_insn = BPF_MOV64_REG(BPF_REG_CTX, BPF_REG_ARG1);
-	new_insn++;
-
-	for (i = 0; i < len; fp++, i++) {
-		struct sock_filter_int tmp_insns[6] = { };
-		struct sock_filter_int *insn = tmp_insns;
-
-		if (addrs)
-			addrs[i] = new_insn - new_prog;
-
-		switch (fp->code) {
-		/* All arithmetic insns and skb loads map as-is. */
-		case BPF_ALU | BPF_ADD | BPF_X:
-		case BPF_ALU | BPF_ADD | BPF_K:
-		case BPF_ALU | BPF_SUB | BPF_X:
-		case BPF_ALU | BPF_SUB | BPF_K:
-		case BPF_ALU | BPF_AND | BPF_X:
-		case BPF_ALU | BPF_AND | BPF_K:
-		case BPF_ALU | BPF_OR | BPF_X:
-		case BPF_ALU | BPF_OR | BPF_K:
-		case BPF_ALU | BPF_LSH | BPF_X:
-		case BPF_ALU | BPF_LSH | BPF_K:
-		case BPF_ALU | BPF_RSH | BPF_X:
-		case BPF_ALU | BPF_RSH | BPF_K:
-		case BPF_ALU | BPF_XOR | BPF_X:
-		case BPF_ALU | BPF_XOR | BPF_K:
-		case BPF_ALU | BPF_MUL | BPF_X:
-		case BPF_ALU | BPF_MUL | BPF_K:
-		case BPF_ALU | BPF_DIV | BPF_X:
-		case BPF_ALU | BPF_DIV | BPF_K:
-		case BPF_ALU | BPF_MOD | BPF_X:
-		case BPF_ALU | BPF_MOD | BPF_K:
-		case BPF_ALU | BPF_NEG:
-		case BPF_LD | BPF_ABS | BPF_W:
-		case BPF_LD | BPF_ABS | BPF_H:
-		case BPF_LD | BPF_ABS | BPF_B:
-		case BPF_LD | BPF_IND | BPF_W:
-		case BPF_LD | BPF_IND | BPF_H:
-		case BPF_LD | BPF_IND | BPF_B:
-			/* Check for overloaded BPF extension and
-			 * directly convert it if found, otherwise
-			 * just move on with mapping.
-			 */
-			if (BPF_CLASS(fp->code) == BPF_LD &&
-			    BPF_MODE(fp->code) == BPF_ABS &&
-			    convert_bpf_extensions(fp, &insn))
-				break;
-
-			*insn = BPF_RAW_INSN(fp->code, BPF_REG_A, BPF_REG_X, 0, fp->k);
-			break;
-
-		/* Jump transformation cannot use BPF block macros
-		 * everywhere as offset calculation and target updates
-		 * require a bit more work than the rest, i.e. jump
-		 * opcodes map as-is, but offsets need adjustment.
-		 */
-
-#define BPF_EMIT_JMP							\
-	do {								\
-		if (target >= len || target < 0)			\
-			goto err;					\
-		insn->off = addrs ? addrs[target] - addrs[i] - 1 : 0;	\
-		/* Adjust pc relative offset for 2nd or 3rd insn. */	\
-		insn->off -= insn - tmp_insns;				\
-	} while (0)
-
-		case BPF_JMP | BPF_JA:
-			target = i + fp->k + 1;
-			insn->code = fp->code;
-			BPF_EMIT_JMP;
-			break;
-
-		case BPF_JMP | BPF_JEQ | BPF_K:
-		case BPF_JMP | BPF_JEQ | BPF_X:
-		case BPF_JMP | BPF_JSET | BPF_K:
-		case BPF_JMP | BPF_JSET | BPF_X:
-		case BPF_JMP | BPF_JGT | BPF_K:
-		case BPF_JMP | BPF_JGT | BPF_X:
-		case BPF_JMP | BPF_JGE | BPF_K:
-		case BPF_JMP | BPF_JGE | BPF_X:
-			if (BPF_SRC(fp->code) == BPF_K && (int) fp->k < 0) {
-				/* BPF immediates are signed, zero extend
-				 * immediate into tmp register and use it
-				 * in compare insn.
-				 */
-				*insn++ = BPF_MOV32_IMM(BPF_REG_TMP, fp->k);
-
-				insn->dst_reg = BPF_REG_A;
-				insn->src_reg = BPF_REG_TMP;
-				bpf_src = BPF_X;
-			} else {
-				insn->dst_reg = BPF_REG_A;
-				insn->src_reg = BPF_REG_X;
-				insn->imm = fp->k;
-				bpf_src = BPF_SRC(fp->code);
+		switch (fentry->code) {
+		case BPF_S_ALU_ADD_X:
+			A += X;
+			continue;
+		case BPF_S_ALU_ADD_K:
+			A += K;
+			continue;
+		case BPF_S_ALU_SUB_X:
+			A -= X;
+			continue;
+		case BPF_S_ALU_SUB_K:
+			A -= K;
+			continue;
+		case BPF_S_ALU_MUL_X:
+			A *= X;
+			continue;
+		case BPF_S_ALU_MUL_K:
+			A *= K;
+			continue;
+		case BPF_S_ALU_DIV_X:
+			if (X == 0)
+				return 0;
+			A /= X;
+			continue;
+		case BPF_S_ALU_DIV_K:
+			A /= K;
+			continue;
+		case BPF_S_ALU_MOD_X:
+			if (X == 0)
+				return 0;
+			A %= X;
+			continue;
+		case BPF_S_ALU_MOD_K:
+			A %= K;
+			continue;
+		case BPF_S_ALU_AND_X:
+			A &= X;
+			continue;
+		case BPF_S_ALU_AND_K:
+			A &= K;
+			continue;
+		case BPF_S_ALU_OR_X:
+			A |= X;
+			continue;
+		case BPF_S_ALU_OR_K:
+			A |= K;
+			continue;
+		case BPF_S_ANC_ALU_XOR_X:
+		case BPF_S_ALU_XOR_X:
+			A ^= X;
+			continue;
+		case BPF_S_ALU_XOR_K:
+			A ^= K;
+			continue;
+		case BPF_S_ALU_LSH_X:
+			A <<= X;
+			continue;
+		case BPF_S_ALU_LSH_K:
+			A <<= K;
+			continue;
+		case BPF_S_ALU_RSH_X:
+			A >>= X;
+			continue;
+		case BPF_S_ALU_RSH_K:
+			A >>= K;
+			continue;
+		case BPF_S_ALU_NEG:
+			A = -A;
+			continue;
+		case BPF_S_JMP_JA:
+			fentry += K;
+			continue;
+		case BPF_S_JMP_JGT_K:
+			fentry += (A > K) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JGE_K:
+			fentry += (A >= K) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JEQ_K:
+			fentry += (A == K) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JSET_K:
+			fentry += (A & K) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JGT_X:
+			fentry += (A > X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JGE_X:
+			fentry += (A >= X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JEQ_X:
+			fentry += (A == X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_JMP_JSET_X:
+			fentry += (A & X) ? fentry->jt : fentry->jf;
+			continue;
+		case BPF_S_LD_W_ABS:
+			k = K;
+load_w:
+			ptr = load_pointer(skb, k, 4, &tmp);
+			if (ptr != NULL) {
+				A = get_unaligned_be32(ptr);
+				continue;
 			}
-
-			/* Common case where 'jump_false' is next insn. */
-			if (fp->jf == 0) {
-				insn->code = BPF_JMP | BPF_OP(fp->code) | bpf_src;
-				target = i + fp->jt + 1;
-				BPF_EMIT_JMP;
-				break;
+			return 0;
+		case BPF_S_LD_H_ABS:
+			k = K;
+load_h:
+			ptr = load_pointer(skb, k, 2, &tmp);
+			if (ptr != NULL) {
+				A = get_unaligned_be16(ptr);
+				continue;
 			}
-
-			/* Convert JEQ into JNE when 'jump_true' is next insn. */
-			if (fp->jt == 0 && BPF_OP(fp->code) == BPF_JEQ) {
-				insn->code = BPF_JMP | BPF_JNE | bpf_src;
-				target = i + fp->jf + 1;
-				BPF_EMIT_JMP;
-				break;
+			return 0;
+		case BPF_S_LD_B_ABS:
+			k = K;
+load_b:
+			ptr = load_pointer(skb, k, 1, &tmp);
+			if (ptr != NULL) {
+				A = *(u8 *)ptr;
+				continue;
 			}
-
-			/* Other jumps are mapped into two insns: Jxx and JA. */
-			target = i + fp->jt + 1;
-			insn->code = BPF_JMP | BPF_OP(fp->code) | bpf_src;
-			BPF_EMIT_JMP;
-			insn++;
-
-			insn->code = BPF_JMP | BPF_JA;
-			target = i + fp->jf + 1;
-			BPF_EMIT_JMP;
-			break;
-
-		/* ldxb 4 * ([14] & 0xf) is remaped into 6 insns. */
-		case BPF_LDX | BPF_MSH | BPF_B:
-			/* tmp = A */
-			*insn++ = BPF_MOV64_REG(BPF_REG_TMP, BPF_REG_A);
-			/* A = BPF_R0 = *(u8 *) (skb->data + K) */
-			*insn++ = BPF_LD_ABS(BPF_B, fp->k);
-			/* A &= 0xf */
-			*insn++ = BPF_ALU32_IMM(BPF_AND, BPF_REG_A, 0xf);
-			/* A <<= 2 */
-			*insn++ = BPF_ALU32_IMM(BPF_LSH, BPF_REG_A, 2);
-			/* X = A */
-			*insn++ = BPF_MOV64_REG(BPF_REG_X, BPF_REG_A);
-			/* A = tmp */
-			*insn = BPF_MOV64_REG(BPF_REG_A, BPF_REG_TMP);
-			break;
-
-		/* RET_K, RET_A are remaped into 2 insns. */
-		case BPF_RET | BPF_A:
-		case BPF_RET | BPF_K:
-			*insn++ = BPF_MOV32_RAW(BPF_RVAL(fp->code) == BPF_K ?
-						BPF_K : BPF_X, BPF_REG_0,
-						BPF_REG_A, fp->k);
-			*insn = BPF_EXIT_INSN();
-			break;
-
-		/* Store to stack. */
-		case BPF_ST:
-		case BPF_STX:
-			*insn = BPF_STX_MEM(BPF_W, BPF_REG_FP, BPF_CLASS(fp->code) ==
-					    BPF_ST ? BPF_REG_A : BPF_REG_X,
-					    -(BPF_MEMWORDS - fp->k) * 4);
-			break;
-
-		/* Load from stack. */
-		case BPF_LD | BPF_MEM:
-		case BPF_LDX | BPF_MEM:
-			*insn = BPF_LDX_MEM(BPF_W, BPF_CLASS(fp->code) == BPF_LD  ?
-					    BPF_REG_A : BPF_REG_X, BPF_REG_FP,
-					    -(BPF_MEMWORDS - fp->k) * 4);
-			break;
-
-		/* A = K or X = K */
-		case BPF_LD | BPF_IMM:
-		case BPF_LDX | BPF_IMM:
-			*insn = BPF_MOV32_IMM(BPF_CLASS(fp->code) == BPF_LD ?
-					      BPF_REG_A : BPF_REG_X, fp->k);
-			break;
-
-		/* X = A */
-		case BPF_MISC | BPF_TAX:
-			*insn = BPF_MOV64_REG(BPF_REG_X, BPF_REG_A);
-			break;
-
-		/* A = X */
-		case BPF_MISC | BPF_TXA:
-			*insn = BPF_MOV64_REG(BPF_REG_A, BPF_REG_X);
-			break;
-
-		/* A = skb->len or X = skb->len */
-		case BPF_LD | BPF_W | BPF_LEN:
-		case BPF_LDX | BPF_W | BPF_LEN:
-			*insn = BPF_LDX_MEM(BPF_W, BPF_CLASS(fp->code) == BPF_LD ?
-					    BPF_REG_A : BPF_REG_X, BPF_REG_CTX,
-					    offsetof(struct sk_buff, len));
-			break;
-
-		/* Access seccomp_data fields. */
-		case BPF_LDX | BPF_ABS | BPF_W:
-			/* A = *(u32 *) (ctx + K) */
-			*insn = BPF_LDX_MEM(BPF_W, BPF_REG_A, BPF_REG_CTX, fp->k);
-			break;
-
-		/* Unkown instruction. */
+			return 0;
+		case BPF_S_LD_W_LEN:
+			A = skb->len;
+			continue;
+		case BPF_S_LDX_W_LEN:
+			X = skb->len;
+			continue;
+		case BPF_S_LD_W_IND:
+			k = X + K;
+			goto load_w;
+		case BPF_S_LD_H_IND:
+			k = X + K;
+			goto load_h;
+		case BPF_S_LD_B_IND:
+			k = X + K;
+			goto load_b;
+		case BPF_S_LDX_B_MSH:
+			ptr = load_pointer(skb, K, 1, &tmp);
+			if (ptr != NULL) {
+				X = (*(u8 *)ptr & 0xf) << 2;
+				continue;
+			}
+			return 0;
+		case BPF_S_LD_IMM:
+			A = K;
+			continue;
+		case BPF_S_LDX_IMM:
+			X = K;
+			continue;
+		case BPF_S_LD_MEM:
+			A = mem[K&15];
+			continue;
+		case BPF_S_LDX_MEM:
+			X = mem[K&15];
+			continue;
+		case BPF_S_MISC_TAX:
+			X = A;
+			continue;
+		case BPF_S_MISC_TXA:
+			A = X;
+			continue;
+		case BPF_S_RET_K:
+			return K;
+		case BPF_S_RET_A:
+			return A;
+		case BPF_S_ST:
+			mem[K&15] = A;
+			continue;
+		case BPF_S_STX:
+			mem[K&15] = X;
+			continue;
+		case BPF_S_ANC_PROTOCOL:
+			A = ntohs(skb->protocol);
+			continue;
+		case BPF_S_ANC_PKTTYPE:
+			A = skb->pkt_type;
+			continue;
+		case BPF_S_ANC_IFINDEX:
+			if (!skb->dev)
+				return 0;
+			A = skb->dev->ifindex;
+			continue;
+		case BPF_S_ANC_MARK:
+			A = skb->mark;
+			continue;
+		case BPF_S_ANC_QUEUE:
+			A = skb->queue_mapping;
+			continue;
+		case BPF_S_ANC_HATYPE:
+			if (!skb->dev)
+				return 0;
+			A = skb->dev->type;
+			continue;
+		case BPF_S_ANC_RXHASH:
+			A = skb->hash;
+			continue;
+		case BPF_S_ANC_CPU:
+			A = raw_smp_processor_id();
+			continue;
+		case BPF_S_ANC_VLAN_TAG:
+			A = vlan_tx_tag_get(skb);
+			continue;
+		case BPF_S_ANC_VLAN_TAG_PRESENT:
+			A = !!vlan_tx_tag_present(skb);
+			continue;
+		case BPF_S_ANC_PAY_OFFSET:
+			A = __skb_get_poff(skb);
+			continue;
+		case BPF_S_ANC_NLATTR: {
+			struct nlattr *nla;
+
+			if (skb_is_nonlinear(skb))
+				return 0;
+			if (skb->len < sizeof(struct nlattr))
+				return 0;
+			if (A > skb->len - sizeof(struct nlattr))
+				return 0;
+
+			nla = nla_find((struct nlattr *)&skb->data[A],
+				       skb->len - A, X);
+			if (nla)
+				A = (void *)nla - (void *)skb->data;
+			else
+				A = 0;
+			continue;
+		}
+		case BPF_S_ANC_NLATTR_NEST: {
+			struct nlattr *nla;
+
+			if (skb_is_nonlinear(skb))
+				return 0;
+			if (skb->len < sizeof(struct nlattr))
+				return 0;
+			if (A > skb->len - sizeof(struct nlattr))
+				return 0;
+
+			nla = (struct nlattr *)&skb->data[A];
+			if (nla->nla_len > skb->len - A)
+				return 0;
+
+			nla = nla_find_nested(nla, X);
+			if (nla)
+				A = (void *)nla - (void *)skb->data;
+			else
+				A = 0;
+			continue;
+		}
+#ifdef CONFIG_SECCOMP_FILTER
+		case BPF_S_ANC_SECCOMP_LD_W:
+			A = seccomp_bpf_load(fentry->k);
+			continue;
+#endif
 		default:
-			goto err;
+			WARN(1, KERN_ALERT "Unknown sock filter code:%u jt:%u tf:%u k:%u\n",
+				       fentry->code, fentry->jt,
+				       fentry->jf, fentry->k);
+			BUG();
+			return 0;
 		}
-
-		insn++;
-		if (new_prog)
-			memcpy(new_insn, tmp_insns,
-			       sizeof(*insn) * (insn - tmp_insns));
-		new_insn += insn - tmp_insns;
-	}
-
-	if (!new_prog) {
-		/* Only calculating new length. */
-		*new_len = new_insn - new_prog;
-		return 0;
-	}
-
-	pass++;
-	if (new_flen != new_insn - new_prog) {
-		new_flen = new_insn - new_prog;
-		if (pass > 2)
-			goto err;
-		goto do_pass;
 	}
 
-	kfree(addrs);
-	BUG_ON(*new_len != new_flen);
 	return 0;
-err:
-	kfree(addrs);
-	return -EINVAL;
 }
+EXPORT_SYMBOL(sk_run_filter);
 
-/* Security:
- *
+/*
+ * Security :
  * A BPF program is able to use 16 cells of memory to store intermediate
- * values (check u32 mem[BPF_MEMWORDS] in sk_run_filter()).
- *
+ * values (check u32 mem[BPF_MEMWORDS] in sk_run_filter())
  * As we dont want to clear mem[] array for each packet going through
  * sk_run_filter(), we check that filter loaded by user never try to read
  * a cell if not previously written, and we check all branches to be sure
@@ -1096,46 +418,44 @@ err:
  */
 static int check_load_and_stores(struct sock_filter *filter, int flen)
 {
-	u16 *masks, memvalid = 0; /* One bit per cell, 16 cells */
+	u16 *masks, memvalid = 0; /* one bit per cell, 16 cells */
 	int pc, ret = 0;
 
-	BUILD_BUG_ON(BPF_MEMWORDS > 16);
-
-	masks = kmalloc_array(flen, sizeof(*masks), GFP_KERNEL);
+	BUILD_BUG_ON(BPF_MEMWORDS != 16);
+	masks = kmalloc(flen * sizeof(*masks), GFP_KERNEL);
 	if (!masks)
 		return -ENOMEM;
-
 	memset(masks, 0xff, flen * sizeof(*masks));
 
 	for (pc = 0; pc < flen; pc++) {
 		memvalid &= masks[pc];
 
 		switch (filter[pc].code) {
-		case BPF_ST:
-		case BPF_STX:
+		case BPF_S_ST:
+		case BPF_S_STX:
 			memvalid |= (1 << filter[pc].k);
 			break;
-		case BPF_LD | BPF_MEM:
-		case BPF_LDX | BPF_MEM:
+		case BPF_S_LD_MEM:
+		case BPF_S_LDX_MEM:
 			if (!(memvalid & (1 << filter[pc].k))) {
 				ret = -EINVAL;
 				goto error;
 			}
 			break;
-		case BPF_JMP | BPF_JA:
-			/* A jump must set masks on target */
+		case BPF_S_JMP_JA:
+			/* a jump must set masks on target */
 			masks[pc + 1 + filter[pc].k] &= memvalid;
 			memvalid = ~0;
 			break;
-		case BPF_JMP | BPF_JEQ | BPF_K:
-		case BPF_JMP | BPF_JEQ | BPF_X:
-		case BPF_JMP | BPF_JGE | BPF_K:
-		case BPF_JMP | BPF_JGE | BPF_X:
-		case BPF_JMP | BPF_JGT | BPF_K:
-		case BPF_JMP | BPF_JGT | BPF_X:
-		case BPF_JMP | BPF_JSET | BPF_K:
-		case BPF_JMP | BPF_JSET | BPF_X:
-			/* A jump must set masks on targets */
+		case BPF_S_JMP_JEQ_K:
+		case BPF_S_JMP_JEQ_X:
+		case BPF_S_JMP_JGE_K:
+		case BPF_S_JMP_JGE_X:
+		case BPF_S_JMP_JGT_K:
+		case BPF_S_JMP_JGT_X:
+		case BPF_S_JMP_JSET_X:
+		case BPF_S_JMP_JSET_K:
+			/* a jump must set masks on targets */
 			masks[pc + 1 + filter[pc].jt] &= memvalid;
 			masks[pc + 1 + filter[pc].jf] &= memvalid;
 			memvalid = ~0;
@@ -1147,72 +467,6 @@ error:
 	return ret;
 }
 
-static bool chk_code_allowed(u16 code_to_probe)
-{
-	static const bool codes[] = {
-		/* 32 bit ALU operations */
-		[BPF_ALU | BPF_ADD | BPF_K] = true,
-		[BPF_ALU | BPF_ADD | BPF_X] = true,
-		[BPF_ALU | BPF_SUB | BPF_K] = true,
-		[BPF_ALU | BPF_SUB | BPF_X] = true,
-		[BPF_ALU | BPF_MUL | BPF_K] = true,
-		[BPF_ALU | BPF_MUL | BPF_X] = true,
-		[BPF_ALU | BPF_DIV | BPF_K] = true,
-		[BPF_ALU | BPF_DIV | BPF_X] = true,
-		[BPF_ALU | BPF_MOD | BPF_K] = true,
-		[BPF_ALU | BPF_MOD | BPF_X] = true,
-		[BPF_ALU | BPF_AND | BPF_K] = true,
-		[BPF_ALU | BPF_AND | BPF_X] = true,
-		[BPF_ALU | BPF_OR | BPF_K] = true,
-		[BPF_ALU | BPF_OR | BPF_X] = true,
-		[BPF_ALU | BPF_XOR | BPF_K] = true,
-		[BPF_ALU | BPF_XOR | BPF_X] = true,
-		[BPF_ALU | BPF_LSH | BPF_K] = true,
-		[BPF_ALU | BPF_LSH | BPF_X] = true,
-		[BPF_ALU | BPF_RSH | BPF_K] = true,
-		[BPF_ALU | BPF_RSH | BPF_X] = true,
-		[BPF_ALU | BPF_NEG] = true,
-		/* Load instructions */
-		[BPF_LD | BPF_W | BPF_ABS] = true,
-		[BPF_LD | BPF_H | BPF_ABS] = true,
-		[BPF_LD | BPF_B | BPF_ABS] = true,
-		[BPF_LD | BPF_W | BPF_LEN] = true,
-		[BPF_LD | BPF_W | BPF_IND] = true,
-		[BPF_LD | BPF_H | BPF_IND] = true,
-		[BPF_LD | BPF_B | BPF_IND] = true,
-		[BPF_LD | BPF_IMM] = true,
-		[BPF_LD | BPF_MEM] = true,
-		[BPF_LDX | BPF_W | BPF_LEN] = true,
-		[BPF_LDX | BPF_B | BPF_MSH] = true,
-		[BPF_LDX | BPF_IMM] = true,
-		[BPF_LDX | BPF_MEM] = true,
-		/* Store instructions */
-		[BPF_ST] = true,
-		[BPF_STX] = true,
-		/* Misc instructions */
-		[BPF_MISC | BPF_TAX] = true,
-		[BPF_MISC | BPF_TXA] = true,
-		/* Return instructions */
-		[BPF_RET | BPF_K] = true,
-		[BPF_RET | BPF_A] = true,
-		/* Jump instructions */
-		[BPF_JMP | BPF_JA] = true,
-		[BPF_JMP | BPF_JEQ | BPF_K] = true,
-		[BPF_JMP | BPF_JEQ | BPF_X] = true,
-		[BPF_JMP | BPF_JGE | BPF_K] = true,
-		[BPF_JMP | BPF_JGE | BPF_X] = true,
-		[BPF_JMP | BPF_JGT | BPF_K] = true,
-		[BPF_JMP | BPF_JGT | BPF_X] = true,
-		[BPF_JMP | BPF_JSET | BPF_K] = true,
-		[BPF_JMP | BPF_JSET | BPF_X] = true,
-	};
-
-	if (code_to_probe >= ARRAY_SIZE(codes))
-		return false;
-
-	return codes[code_to_probe];
-}
-
 /**
  *	sk_chk_filter - verify socket filter code
  *	@filter: filter to verify
@@ -1229,303 +483,187 @@ static bool chk_code_allowed(u16 code_to_probe)
  */
 int sk_chk_filter(struct sock_filter *filter, unsigned int flen)
 {
-	bool anc_found;
+	/*
+	 * Valid instructions are initialized to non-0.
+	 * Invalid instructions are initialized to 0.
+	 */
+	static const u8 codes[] = {
+		[BPF_ALU|BPF_ADD|BPF_K]  = BPF_S_ALU_ADD_K,
+		[BPF_ALU|BPF_ADD|BPF_X]  = BPF_S_ALU_ADD_X,
+		[BPF_ALU|BPF_SUB|BPF_K]  = BPF_S_ALU_SUB_K,
+		[BPF_ALU|BPF_SUB|BPF_X]  = BPF_S_ALU_SUB_X,
+		[BPF_ALU|BPF_MUL|BPF_K]  = BPF_S_ALU_MUL_K,
+		[BPF_ALU|BPF_MUL|BPF_X]  = BPF_S_ALU_MUL_X,
+		[BPF_ALU|BPF_DIV|BPF_X]  = BPF_S_ALU_DIV_X,
+		[BPF_ALU|BPF_MOD|BPF_K]  = BPF_S_ALU_MOD_K,
+		[BPF_ALU|BPF_MOD|BPF_X]  = BPF_S_ALU_MOD_X,
+		[BPF_ALU|BPF_AND|BPF_K]  = BPF_S_ALU_AND_K,
+		[BPF_ALU|BPF_AND|BPF_X]  = BPF_S_ALU_AND_X,
+		[BPF_ALU|BPF_OR|BPF_K]   = BPF_S_ALU_OR_K,
+		[BPF_ALU|BPF_OR|BPF_X]   = BPF_S_ALU_OR_X,
+		[BPF_ALU|BPF_XOR|BPF_K]  = BPF_S_ALU_XOR_K,
+		[BPF_ALU|BPF_XOR|BPF_X]  = BPF_S_ALU_XOR_X,
+		[BPF_ALU|BPF_LSH|BPF_K]  = BPF_S_ALU_LSH_K,
+		[BPF_ALU|BPF_LSH|BPF_X]  = BPF_S_ALU_LSH_X,
+		[BPF_ALU|BPF_RSH|BPF_K]  = BPF_S_ALU_RSH_K,
+		[BPF_ALU|BPF_RSH|BPF_X]  = BPF_S_ALU_RSH_X,
+		[BPF_ALU|BPF_NEG]        = BPF_S_ALU_NEG,
+		[BPF_LD|BPF_W|BPF_ABS]   = BPF_S_LD_W_ABS,
+		[BPF_LD|BPF_H|BPF_ABS]   = BPF_S_LD_H_ABS,
+		[BPF_LD|BPF_B|BPF_ABS]   = BPF_S_LD_B_ABS,
+		[BPF_LD|BPF_W|BPF_LEN]   = BPF_S_LD_W_LEN,
+		[BPF_LD|BPF_W|BPF_IND]   = BPF_S_LD_W_IND,
+		[BPF_LD|BPF_H|BPF_IND]   = BPF_S_LD_H_IND,
+		[BPF_LD|BPF_B|BPF_IND]   = BPF_S_LD_B_IND,
+		[BPF_LD|BPF_IMM]         = BPF_S_LD_IMM,
+		[BPF_LDX|BPF_W|BPF_LEN]  = BPF_S_LDX_W_LEN,
+		[BPF_LDX|BPF_B|BPF_MSH]  = BPF_S_LDX_B_MSH,
+		[BPF_LDX|BPF_IMM]        = BPF_S_LDX_IMM,
+		[BPF_MISC|BPF_TAX]       = BPF_S_MISC_TAX,
+		[BPF_MISC|BPF_TXA]       = BPF_S_MISC_TXA,
+		[BPF_RET|BPF_K]          = BPF_S_RET_K,
+		[BPF_RET|BPF_A]          = BPF_S_RET_A,
+		[BPF_ALU|BPF_DIV|BPF_K]  = BPF_S_ALU_DIV_K,
+		[BPF_LD|BPF_MEM]         = BPF_S_LD_MEM,
+		[BPF_LDX|BPF_MEM]        = BPF_S_LDX_MEM,
+		[BPF_ST]                 = BPF_S_ST,
+		[BPF_STX]                = BPF_S_STX,
+		[BPF_JMP|BPF_JA]         = BPF_S_JMP_JA,
+		[BPF_JMP|BPF_JEQ|BPF_K]  = BPF_S_JMP_JEQ_K,
+		[BPF_JMP|BPF_JEQ|BPF_X]  = BPF_S_JMP_JEQ_X,
+		[BPF_JMP|BPF_JGE|BPF_K]  = BPF_S_JMP_JGE_K,
+		[BPF_JMP|BPF_JGE|BPF_X]  = BPF_S_JMP_JGE_X,
+		[BPF_JMP|BPF_JGT|BPF_K]  = BPF_S_JMP_JGT_K,
+		[BPF_JMP|BPF_JGT|BPF_X]  = BPF_S_JMP_JGT_X,
+		[BPF_JMP|BPF_JSET|BPF_K] = BPF_S_JMP_JSET_K,
+		[BPF_JMP|BPF_JSET|BPF_X] = BPF_S_JMP_JSET_X,
+	};
 	int pc;
+	bool anc_found;
 
 	if (flen == 0 || flen > BPF_MAXINSNS)
 		return -EINVAL;
 
-	/* Check the filter code now */
+	/* check the filter code now */
 	for (pc = 0; pc < flen; pc++) {
 		struct sock_filter *ftest = &filter[pc];
+		u16 code = ftest->code;
 
-		/* May we actually operate on this code? */
-		if (!chk_code_allowed(ftest->code))
+		if (code >= ARRAY_SIZE(codes))
+			return -EINVAL;
+		code = codes[code];
+		if (!code)
 			return -EINVAL;
-
 		/* Some instructions need special checks */
-		switch (ftest->code) {
-		case BPF_ALU | BPF_DIV | BPF_K:
-		case BPF_ALU | BPF_MOD | BPF_K:
-			/* Check for division by zero */
+		switch (code) {
+		case BPF_S_ALU_DIV_K:
+		case BPF_S_ALU_MOD_K:
+			/* check for division by zero */
 			if (ftest->k == 0)
 				return -EINVAL;
 			break;
-		case BPF_LD | BPF_MEM:
-		case BPF_LDX | BPF_MEM:
-		case BPF_ST:
-		case BPF_STX:
-			/* Check for invalid memory addresses */
+		case BPF_S_LD_MEM:
+		case BPF_S_LDX_MEM:
+		case BPF_S_ST:
+		case BPF_S_STX:
+			/* check for invalid memory addresses */
 			if (ftest->k >= BPF_MEMWORDS)
 				return -EINVAL;
 			break;
-		case BPF_JMP | BPF_JA:
-			/* Note, the large ftest->k might cause loops.
+		case BPF_S_JMP_JA:
+			/*
+			 * Note, the large ftest->k might cause loops.
 			 * Compare this with conditional jumps below,
 			 * where offsets are limited. --ANK (981016)
 			 */
-			if (ftest->k >= (unsigned int)(flen - pc - 1))
+			if (ftest->k >= (unsigned int)(flen-pc-1))
 				return -EINVAL;
 			break;
-		case BPF_JMP | BPF_JEQ | BPF_K:
-		case BPF_JMP | BPF_JEQ | BPF_X:
-		case BPF_JMP | BPF_JGE | BPF_K:
-		case BPF_JMP | BPF_JGE | BPF_X:
-		case BPF_JMP | BPF_JGT | BPF_K:
-		case BPF_JMP | BPF_JGT | BPF_X:
-		case BPF_JMP | BPF_JSET | BPF_K:
-		case BPF_JMP | BPF_JSET | BPF_X:
-			/* Both conditionals must be safe */
+		case BPF_S_JMP_JEQ_K:
+		case BPF_S_JMP_JEQ_X:
+		case BPF_S_JMP_JGE_K:
+		case BPF_S_JMP_JGE_X:
+		case BPF_S_JMP_JGT_K:
+		case BPF_S_JMP_JGT_X:
+		case BPF_S_JMP_JSET_X:
+		case BPF_S_JMP_JSET_K:
+			/* for conditionals both must be safe */
 			if (pc + ftest->jt + 1 >= flen ||
 			    pc + ftest->jf + 1 >= flen)
 				return -EINVAL;
 			break;
-		case BPF_LD | BPF_W | BPF_ABS:
-		case BPF_LD | BPF_H | BPF_ABS:
-		case BPF_LD | BPF_B | BPF_ABS:
+		case BPF_S_LD_W_ABS:
+		case BPF_S_LD_H_ABS:
+		case BPF_S_LD_B_ABS:
 			anc_found = false;
-			if (bpf_anc_helper(ftest) & BPF_ANC)
-				anc_found = true;
-			/* Ancillary operation unknown or unsupported */
+#define ANCILLARY(CODE) case SKF_AD_OFF + SKF_AD_##CODE:	\
+				code = BPF_S_ANC_##CODE;	\
+				anc_found = true;		\
+				break
+			switch (ftest->k) {
+			ANCILLARY(PROTOCOL);
+			ANCILLARY(PKTTYPE);
+			ANCILLARY(IFINDEX);
+			ANCILLARY(NLATTR);
+			ANCILLARY(NLATTR_NEST);
+			ANCILLARY(MARK);
+			ANCILLARY(QUEUE);
+			ANCILLARY(HATYPE);
+			ANCILLARY(RXHASH);
+			ANCILLARY(CPU);
+			ANCILLARY(ALU_XOR_X);
+			ANCILLARY(VLAN_TAG);
+			ANCILLARY(VLAN_TAG_PRESENT);
+			ANCILLARY(PAY_OFFSET);
+			}
+
+			/* ancillary operation unknown or unsupported */
 			if (anc_found == false && ftest->k >= SKF_AD_OFF)
 				return -EINVAL;
 		}
+		ftest->code = code;
 	}
 
-	/* Last instruction must be a RET code */
+	/* last instruction must be a RET code */
 	switch (filter[flen - 1].code) {
-	case BPF_RET | BPF_K:
-	case BPF_RET | BPF_A:
+	case BPF_S_RET_K:
+	case BPF_S_RET_A:
 		return check_load_and_stores(filter, flen);
 	}
-
 	return -EINVAL;
 }
 EXPORT_SYMBOL(sk_chk_filter);
 
-static int sk_store_orig_filter(struct sk_filter *fp,
-				const struct sock_fprog *fprog)
-{
-	unsigned int fsize = sk_filter_proglen(fprog);
-	struct sock_fprog_kern *fkprog;
-
-	fp->orig_prog = kmalloc(sizeof(*fkprog), GFP_KERNEL);
-	if (!fp->orig_prog)
-		return -ENOMEM;
-
-	fkprog = fp->orig_prog;
-	fkprog->len = fprog->len;
-	fkprog->filter = kmemdup(fp->insns, fsize, GFP_KERNEL);
-	if (!fkprog->filter) {
-		kfree(fp->orig_prog);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static void sk_release_orig_filter(struct sk_filter *fp)
-{
-	struct sock_fprog_kern *fprog = fp->orig_prog;
-
-	if (fprog) {
-		kfree(fprog->filter);
-		kfree(fprog);
-	}
-}
-
 /**
  * 	sk_filter_release_rcu - Release a socket filter by rcu_head
  *	@rcu: rcu_head that contains the sk_filter to free
  */
-static void sk_filter_release_rcu(struct rcu_head *rcu)
+void sk_filter_release_rcu(struct rcu_head *rcu)
 {
 	struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
 
-	sk_release_orig_filter(fp);
-	sk_filter_free(fp);
-}
-
-/**
- *	sk_filter_release - release a socket filter
- *	@fp: filter to remove
- *
- *	Remove a filter from a socket and release its resources.
- */
-static void sk_filter_release(struct sk_filter *fp)
-{
-	if (atomic_dec_and_test(&fp->refcnt))
-		call_rcu(&fp->rcu, sk_filter_release_rcu);
-}
-
-void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp)
-{
-	atomic_sub(sk_filter_size(fp->len), &sk->sk_omem_alloc);
-	sk_filter_release(fp);
-}
-
-void sk_filter_charge(struct sock *sk, struct sk_filter *fp)
-{
-	atomic_inc(&fp->refcnt);
-	atomic_add(sk_filter_size(fp->len), &sk->sk_omem_alloc);
-}
-
-static struct sk_filter *__sk_migrate_realloc(struct sk_filter *fp,
-					      struct sock *sk,
-					      unsigned int len)
-{
-	struct sk_filter *fp_new;
-
-	if (sk == NULL)
-		return krealloc(fp, len, GFP_KERNEL);
-
-	fp_new = sock_kmalloc(sk, len, GFP_KERNEL);
-	if (fp_new) {
-		*fp_new = *fp;
-		/* As we're keeping orig_prog in fp_new along,
-		 * we need to make sure we're not evicting it
-		 * from the old fp.
-		 */
-		fp->orig_prog = NULL;
-		sk_filter_uncharge(sk, fp);
-	}
-
-	return fp_new;
-}
-
-static struct sk_filter *__sk_migrate_filter(struct sk_filter *fp,
-					     struct sock *sk)
-{
-	struct sock_filter *old_prog;
-	struct sk_filter *old_fp;
-	int err, new_len, old_len = fp->len;
-
-	/* We are free to overwrite insns et al right here as it
-	 * won't be used at this point in time anymore internally
-	 * after the migration to the internal BPF instruction
-	 * representation.
-	 */
-	BUILD_BUG_ON(sizeof(struct sock_filter) !=
-		     sizeof(struct sock_filter_int));
-
-	/* Conversion cannot happen on overlapping memory areas,
-	 * so we need to keep the user BPF around until the 2nd
-	 * pass. At this time, the user BPF is stored in fp->insns.
-	 */
-	old_prog = kmemdup(fp->insns, old_len * sizeof(struct sock_filter),
-			   GFP_KERNEL);
-	if (!old_prog) {
-		err = -ENOMEM;
-		goto out_err;
-	}
-
-	/* 1st pass: calculate the new program length. */
-	err = sk_convert_filter(old_prog, old_len, NULL, &new_len);
-	if (err)
-		goto out_err_free;
-
-	/* Expand fp for appending the new filter representation. */
-	old_fp = fp;
-	fp = __sk_migrate_realloc(old_fp, sk, sk_filter_size(new_len));
-	if (!fp) {
-		/* The old_fp is still around in case we couldn't
-		 * allocate new memory, so uncharge on that one.
-		 */
-		fp = old_fp;
-		err = -ENOMEM;
-		goto out_err_free;
-	}
-
-	fp->len = new_len;
-
-	/* 2nd pass: remap sock_filter insns into sock_filter_int insns. */
-	err = sk_convert_filter(old_prog, old_len, fp->insnsi, &new_len);
-	if (err)
-		/* 2nd sk_convert_filter() can fail only if it fails
-		 * to allocate memory, remapping must succeed. Note,
-		 * that at this time old_fp has already been released
-		 * by __sk_migrate_realloc().
-		 */
-		goto out_err_free;
-
-	sk_filter_select_runtime(fp);
-
-	kfree(old_prog);
-	return fp;
-
-out_err_free:
-	kfree(old_prog);
-out_err:
-	/* Rollback filter setup. */
-	if (sk != NULL)
-		sk_filter_uncharge(sk, fp);
-	else
-		kfree(fp);
-	return ERR_PTR(err);
-}
-
-void __weak bpf_int_jit_compile(struct sk_filter *prog)
-{
-}
-
-/**
- *	sk_filter_select_runtime - select execution runtime for BPF program
- *	@fp: sk_filter populated with internal BPF program
- *
- * try to JIT internal BPF program, if JIT is not available select interpreter
- * BPF program will be executed via SK_RUN_FILTER() macro
- */
-void sk_filter_select_runtime(struct sk_filter *fp)
-{
-	fp->bpf_func = (void *) __sk_run_filter;
-
-	/* Probe if internal BPF can be JITed */
-	bpf_int_jit_compile(fp);
-}
-EXPORT_SYMBOL_GPL(sk_filter_select_runtime);
-
-/* free internal BPF program */
-void sk_filter_free(struct sk_filter *fp)
-{
 	bpf_jit_free(fp);
 }
-EXPORT_SYMBOL_GPL(sk_filter_free);
+EXPORT_SYMBOL(sk_filter_release_rcu);
 
-static struct sk_filter *__sk_prepare_filter(struct sk_filter *fp,
-					     struct sock *sk)
+static int __sk_prepare_filter(struct sk_filter *fp)
 {
 	int err;
 
-	fp->bpf_func = NULL;
-	fp->jited = 0;
+	fp->bpf_func = sk_run_filter;
 
 	err = sk_chk_filter(fp->insns, fp->len);
-	if (err) {
-		if (sk != NULL)
-			sk_filter_uncharge(sk, fp);
-		else
-			kfree(fp);
-		return ERR_PTR(err);
-	}
+	if (err)
+		return err;
 
-	/* Probe if we can JIT compile the filter and if so, do
-	 * the compilation of the filter.
-	 */
 	bpf_jit_compile(fp);
-
-	/* JIT compiler couldn't process this filter, so do the
-	 * internal BPF translation for the optimized interpreter.
-	 */
-	if (!fp->jited)
-		fp = __sk_migrate_filter(fp, sk);
-
-	return fp;
+	return 0;
 }
 
 /**
  *	sk_unattached_filter_create - create an unattached filter
+ *	@fprog: the filter program
  *	@pfp: the unattached filter that is created
- *	@fprog: the filter program
  *
  * Create a filter independent of any socket. We first run some
  * sanity checks on it to make sure it does not explode on us later.
@@ -1533,10 +671,11 @@ static struct sk_filter *__sk_prepare_filter(struct sk_filter *fp,
  * a negative errno code is returned. On success the return is zero.
  */
 int sk_unattached_filter_create(struct sk_filter **pfp,
-				struct sock_fprog_kern *fprog)
+				struct sock_fprog *fprog)
 {
-	unsigned int fsize = sk_filter_proglen(fprog);
 	struct sk_filter *fp;
+	unsigned int fsize = sizeof(struct sock_filter) * fprog->len;
+	int err;
 
 	/* Make sure new filter is there and in the right amounts. */
 	if (fprog->filter == NULL)
@@ -1545,26 +684,20 @@ int sk_unattached_filter_create(struct sk_filter **pfp,
 	fp = kmalloc(sk_filter_size(fprog->len), GFP_KERNEL);
 	if (!fp)
 		return -ENOMEM;
-
-	memcpy(fp->insns, fprog->filter, fsize);
+	memcpy(fp->insns, (void __force_kernel *)fprog->filter, fsize);
 
 	atomic_set(&fp->refcnt, 1);
 	fp->len = fprog->len;
-	/* Since unattached filters are not copied back to user
-	 * space through sk_get_filter(), we do not need to hold
-	 * a copy here, and can spare us the work.
-	 */
-	fp->orig_prog = NULL;
 
-	/* __sk_prepare_filter() already takes care of uncharging
-	 * memory in case something goes wrong.
-	 */
-	fp = __sk_prepare_filter(fp, NULL);
-	if (IS_ERR(fp))
-		return PTR_ERR(fp);
+	err = __sk_prepare_filter(fp);
+	if (err)
+		goto free_mem;
 
 	*pfp = fp;
 	return 0;
+free_mem:
+	kfree(fp);
+	return err;
 }
 EXPORT_SYMBOL_GPL(sk_unattached_filter_create);
 
@@ -1587,7 +720,7 @@ EXPORT_SYMBOL_GPL(sk_unattached_filter_destroy);
 int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
 {
 	struct sk_filter *fp, *old_fp;
-	unsigned int fsize = sk_filter_proglen(fprog);
+	unsigned int fsize = sizeof(struct sock_filter) * fprog->len;
 	unsigned int sk_fsize = sk_filter_size(fprog->len);
 	int err;
 
@@ -1601,7 +734,6 @@ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
 	fp = sock_kmalloc(sk, sk_fsize, GFP_KERNEL);
 	if (!fp)
 		return -ENOMEM;
-
 	if (copy_from_user(fp->insns, fprog->filter, fsize)) {
 		sock_kfree_s(sk, fp, sk_fsize);
 		return -EFAULT;
@@ -1610,26 +742,18 @@ int sk_attach_filter(struct sock_fprog *fprog, struct sock *sk)
 	atomic_set(&fp->refcnt, 1);
 	fp->len = fprog->len;
 
-	err = sk_store_orig_filter(fp, fprog);
+	err = __sk_prepare_filter(fp);
 	if (err) {
 		sk_filter_uncharge(sk, fp);
-		return -ENOMEM;
+		return err;
 	}
 
-	/* __sk_prepare_filter() already takes care of uncharging
-	 * memory in case something goes wrong.
-	 */
-	fp = __sk_prepare_filter(fp, sk);
-	if (IS_ERR(fp))
-		return PTR_ERR(fp);
-
 	old_fp = rcu_dereference_protected(sk->sk_filter,
 					   sock_owned_by_user(sk));
 	rcu_assign_pointer(sk->sk_filter, fp);
 
 	if (old_fp)
 		sk_filter_uncharge(sk, old_fp);
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(sk_attach_filter);
@@ -1649,46 +773,116 @@ int sk_detach_filter(struct sock *sk)
 		sk_filter_uncharge(sk, filter);
 		ret = 0;
 	}
-
 	return ret;
 }
 EXPORT_SYMBOL_GPL(sk_detach_filter);
 
-int sk_get_filter(struct sock *sk, struct sock_filter __user *ubuf,
-		  unsigned int len)
+void sk_decode_filter(struct sock_filter *filt, struct sock_filter *to)
+{
+	static const u16 decodes[] = {
+		[BPF_S_ALU_ADD_K]	= BPF_ALU|BPF_ADD|BPF_K,
+		[BPF_S_ALU_ADD_X]	= BPF_ALU|BPF_ADD|BPF_X,
+		[BPF_S_ALU_SUB_K]	= BPF_ALU|BPF_SUB|BPF_K,
+		[BPF_S_ALU_SUB_X]	= BPF_ALU|BPF_SUB|BPF_X,
+		[BPF_S_ALU_MUL_K]	= BPF_ALU|BPF_MUL|BPF_K,
+		[BPF_S_ALU_MUL_X]	= BPF_ALU|BPF_MUL|BPF_X,
+		[BPF_S_ALU_DIV_X]	= BPF_ALU|BPF_DIV|BPF_X,
+		[BPF_S_ALU_MOD_K]	= BPF_ALU|BPF_MOD|BPF_K,
+		[BPF_S_ALU_MOD_X]	= BPF_ALU|BPF_MOD|BPF_X,
+		[BPF_S_ALU_AND_K]	= BPF_ALU|BPF_AND|BPF_K,
+		[BPF_S_ALU_AND_X]	= BPF_ALU|BPF_AND|BPF_X,
+		[BPF_S_ALU_OR_K]	= BPF_ALU|BPF_OR|BPF_K,
+		[BPF_S_ALU_OR_X]	= BPF_ALU|BPF_OR|BPF_X,
+		[BPF_S_ALU_XOR_K]	= BPF_ALU|BPF_XOR|BPF_K,
+		[BPF_S_ALU_XOR_X]	= BPF_ALU|BPF_XOR|BPF_X,
+		[BPF_S_ALU_LSH_K]	= BPF_ALU|BPF_LSH|BPF_K,
+		[BPF_S_ALU_LSH_X]	= BPF_ALU|BPF_LSH|BPF_X,
+		[BPF_S_ALU_RSH_K]	= BPF_ALU|BPF_RSH|BPF_K,
+		[BPF_S_ALU_RSH_X]	= BPF_ALU|BPF_RSH|BPF_X,
+		[BPF_S_ALU_NEG]		= BPF_ALU|BPF_NEG,
+		[BPF_S_LD_W_ABS]	= BPF_LD|BPF_W|BPF_ABS,
+		[BPF_S_LD_H_ABS]	= BPF_LD|BPF_H|BPF_ABS,
+		[BPF_S_LD_B_ABS]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_PROTOCOL]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_PKTTYPE]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_IFINDEX]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_NLATTR]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_NLATTR_NEST]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_MARK]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_QUEUE]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_HATYPE]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_RXHASH]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_CPU]		= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_ALU_XOR_X]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_SECCOMP_LD_W] = BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_VLAN_TAG]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_VLAN_TAG_PRESENT] = BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_ANC_PAY_OFFSET]	= BPF_LD|BPF_B|BPF_ABS,
+		[BPF_S_LD_W_LEN]	= BPF_LD|BPF_W|BPF_LEN,
+		[BPF_S_LD_W_IND]	= BPF_LD|BPF_W|BPF_IND,
+		[BPF_S_LD_H_IND]	= BPF_LD|BPF_H|BPF_IND,
+		[BPF_S_LD_B_IND]	= BPF_LD|BPF_B|BPF_IND,
+		[BPF_S_LD_IMM]		= BPF_LD|BPF_IMM,
+		[BPF_S_LDX_W_LEN]	= BPF_LDX|BPF_W|BPF_LEN,
+		[BPF_S_LDX_B_MSH]	= BPF_LDX|BPF_B|BPF_MSH,
+		[BPF_S_LDX_IMM]		= BPF_LDX|BPF_IMM,
+		[BPF_S_MISC_TAX]	= BPF_MISC|BPF_TAX,
+		[BPF_S_MISC_TXA]	= BPF_MISC|BPF_TXA,
+		[BPF_S_RET_K]		= BPF_RET|BPF_K,
+		[BPF_S_RET_A]		= BPF_RET|BPF_A,
+		[BPF_S_ALU_DIV_K]	= BPF_ALU|BPF_DIV|BPF_K,
+		[BPF_S_LD_MEM]		= BPF_LD|BPF_MEM,
+		[BPF_S_LDX_MEM]		= BPF_LDX|BPF_MEM,
+		[BPF_S_ST]		= BPF_ST,
+		[BPF_S_STX]		= BPF_STX,
+		[BPF_S_JMP_JA]		= BPF_JMP|BPF_JA,
+		[BPF_S_JMP_JEQ_K]	= BPF_JMP|BPF_JEQ|BPF_K,
+		[BPF_S_JMP_JEQ_X]	= BPF_JMP|BPF_JEQ|BPF_X,
+		[BPF_S_JMP_JGE_K]	= BPF_JMP|BPF_JGE|BPF_K,
+		[BPF_S_JMP_JGE_X]	= BPF_JMP|BPF_JGE|BPF_X,
+		[BPF_S_JMP_JGT_K]	= BPF_JMP|BPF_JGT|BPF_K,
+		[BPF_S_JMP_JGT_X]	= BPF_JMP|BPF_JGT|BPF_X,
+		[BPF_S_JMP_JSET_K]	= BPF_JMP|BPF_JSET|BPF_K,
+		[BPF_S_JMP_JSET_X]	= BPF_JMP|BPF_JSET|BPF_X,
+	};
+	u16 code;
+
+	code = filt->code;
+
+	to->code = decodes[code];
+	to->jt = filt->jt;
+	to->jf = filt->jf;
+	to->k = filt->k;
+}
+
+int sk_get_filter(struct sock *sk, struct sock_filter __user *ubuf, unsigned int len)
 {
-	struct sock_fprog_kern *fprog;
 	struct sk_filter *filter;
-	int ret = 0;
+	int i, ret;
 
 	lock_sock(sk);
 	filter = rcu_dereference_protected(sk->sk_filter,
-					   sock_owned_by_user(sk));
+			sock_owned_by_user(sk));
+	ret = 0;
 	if (!filter)
 		goto out;
-
-	/* We're copying the filter that has been originally attached,
-	 * so no conversion/decode needed anymore.
-	 */
-	fprog = filter->orig_prog;
-
-	ret = fprog->len;
+	ret = filter->len;
 	if (!len)
-		/* User space only enquires number of filter blocks. */
 		goto out;
-
 	ret = -EINVAL;
-	if (len < fprog->len)
+	if (len < filter->len)
 		goto out;
 
 	ret = -EFAULT;
-	if (copy_to_user(ubuf, fprog->filter, sk_filter_proglen(fprog)))
-		goto out;
+	for (i = 0; i < filter->len; i++) {
+		struct sock_filter fb;
 
-	/* Instead of bytes, the API requests to return the number
-	 * of filter blocks.
-	 */
-	ret = fprog->len;
+		sk_decode_filter(&filter->insns[i], &fb);
+		if (copy_to_user(&ubuf[i], &fb, sizeof(fb)))
+			goto out;
+	}
+
+	ret = filter->len;
 out:
 	release_sock(sk);
 	return ret;
diff --git a/net/core/flow.c b/net/core/flow.c
index a0348fd..6951c76 100644
--- a/net/core/flow.c
+++ b/net/core/flow.c
@@ -65,7 +65,7 @@ static void flow_cache_new_hashrnd(unsigned long arg)
 static int flow_entry_valid(struct flow_cache_entry *fle,
 				struct netns_xfrm *xfrm)
 {
-	if (atomic_read(&xfrm->flow_cache_genid) != fle->genid)
+	if (atomic_read_unchecked(&xfrm->flow_cache_genid) != fle->genid)
 		return 0;
 	if (fle->object && !fle->object->ops->check(fle->object))
 		return 0;
@@ -242,7 +242,7 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir,
 			hlist_add_head(&fle->u.hlist, &fcp->hash_table[hash]);
 			fcp->hash_count++;
 		}
-	} else if (likely(fle->genid == atomic_read(&net->xfrm.flow_cache_genid))) {
+	} else if (likely(fle->genid == atomic_read_unchecked(&net->xfrm.flow_cache_genid))) {
 		flo = fle->object;
 		if (!flo)
 			goto ret_object;
@@ -263,7 +263,7 @@ nocache:
 	}
 	flo = resolver(net, key, family, dir, flo, ctx);
 	if (fle) {
-		fle->genid = atomic_read(&net->xfrm.flow_cache_genid);
+		fle->genid = atomic_read_unchecked(&net->xfrm.flow_cache_genid);
 		if (!IS_ERR(flo))
 			fle->object = flo;
 		else
diff --git a/net/core/iovec.c b/net/core/iovec.c
index e1ec45a..e5c6f16 100644
--- a/net/core/iovec.c
+++ b/net/core/iovec.c
@@ -42,7 +42,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a
 	if (m->msg_name && m->msg_namelen) {
 		if (mode == VERIFY_READ) {
 			void __user *namep;
-			namep = (void __user __force *) m->msg_name;
+			namep = (void __force_user *) m->msg_name;
 			err = move_addr_to_kernel(namep, m->msg_namelen,
 						  address);
 			if (err < 0)
@@ -55,7 +55,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a
 	}
 
 	size = m->msg_iovlen * sizeof(struct iovec);
-	if (copy_from_user(iov, (void __user __force *) m->msg_iov, size))
+	if (copy_from_user(iov, (void __force_user *) m->msg_iov, size))
 		return -EFAULT;
 
 	m->msg_iov = iov;
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index ef31fef..8be66d9 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -2825,7 +2825,7 @@ static int proc_unres_qlen(struct ctl_table *ctl, int write,
 			   void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	int size, ret;
-	struct ctl_table tmp = *ctl;
+	ctl_table_no_const tmp = *ctl;
 
 	tmp.extra1 = &zero;
 	tmp.extra2 = &unres_qlen_max;
@@ -2887,7 +2887,7 @@ static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write,
 					   void __user *buffer,
 					   size_t *lenp, loff_t *ppos)
 {
-	struct ctl_table tmp = *ctl;
+	ctl_table_no_const tmp = *ctl;
 	int ret;
 
 	tmp.extra1 = &zero;
diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c
index 2bf8329..2eb1423 100644
--- a/net/core/net-procfs.c
+++ b/net/core/net-procfs.c
@@ -79,7 +79,13 @@ static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
 	struct rtnl_link_stats64 temp;
 	const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
 
-	seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
+	if (gr_proc_is_restricted())
+		seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
+		   "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
+		   dev->name, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL,
+		   0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL);
+	else
+		seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
 		   "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
 		   dev->name, stats->rx_bytes, stats->rx_packets,
 		   stats->rx_errors,
@@ -166,7 +172,7 @@ static int softnet_seq_show(struct seq_file *seq, void *v)
 	return 0;
 }
 
-static const struct seq_operations dev_seq_ops = {
+const struct seq_operations dev_seq_ops = {
 	.start = dev_seq_start,
 	.next  = dev_seq_next,
 	.stop  = dev_seq_stop,
@@ -196,7 +202,7 @@ static const struct seq_operations softnet_seq_ops = {
 
 static int softnet_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &softnet_seq_ops);
+	return seq_open_restrict(file, &softnet_seq_ops);
 }
 
 static const struct file_operations softnet_seq_fops = {
@@ -283,8 +289,13 @@ static int ptype_seq_show(struct seq_file *seq, void *v)
 		else
 			seq_printf(seq, "%04x", ntohs(pt->type));
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+		seq_printf(seq, " %-8s %pf\n",
+			   pt->dev ? pt->dev->name : "", NULL);
+#else
 		seq_printf(seq, " %-8s %pf\n",
 			   pt->dev ? pt->dev->name : "", pt->func);
+#endif
 	}
 
 	return 0;
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
index 1cac29e..fb482f3 100644
--- a/net/core/net-sysfs.c
+++ b/net/core/net-sysfs.c
@@ -259,7 +259,7 @@ static ssize_t carrier_changes_show(struct device *dev,
 {
 	struct net_device *netdev = to_net_dev(dev);
 	return sprintf(buf, fmt_dec,
-		       atomic_read(&netdev->carrier_changes));
+		       atomic_read_unchecked(&netdev->carrier_changes));
 }
 static DEVICE_ATTR_RO(carrier_changes);
 
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 85b6269..fc77ea0 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -443,7 +443,7 @@ static int __register_pernet_operations(struct list_head *list,
 	int error;
 	LIST_HEAD(net_exit_list);
 
-	list_add_tail(&ops->list, list);
+	pax_list_add_tail((struct list_head *)&ops->list, list);
 	if (ops->init || (ops->id && ops->size)) {
 		for_each_net(net) {
 			error = ops_init(ops, net);
@@ -456,7 +456,7 @@ static int __register_pernet_operations(struct list_head *list,
 
 out_undo:
 	/* If I have an error cleanup all namespaces I initialized */
-	list_del(&ops->list);
+	pax_list_del((struct list_head *)&ops->list);
 	ops_exit_list(ops, &net_exit_list);
 	ops_free_list(ops, &net_exit_list);
 	return error;
@@ -467,7 +467,7 @@ static void __unregister_pernet_operations(struct pernet_operations *ops)
 	struct net *net;
 	LIST_HEAD(net_exit_list);
 
-	list_del(&ops->list);
+	pax_list_del((struct list_head *)&ops->list);
 	for_each_net(net)
 		list_add_tail(&net->exit_list, &net_exit_list);
 	ops_exit_list(ops, &net_exit_list);
@@ -601,7 +601,7 @@ int register_pernet_device(struct pernet_operations *ops)
 	mutex_lock(&net_mutex);
 	error = register_pernet_operations(&pernet_list, ops);
 	if (!error && (first_device == &pernet_list))
-		first_device = &ops->list;
+		first_device = (struct list_head *)&ops->list;
 	mutex_unlock(&net_mutex);
 	return error;
 }
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index e33937f..b2b4981 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -382,7 +382,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 	struct udphdr *udph;
 	struct iphdr *iph;
 	struct ethhdr *eth;
-	static atomic_t ip_ident;
+	static atomic_unchecked_t ip_ident;
 	struct ipv6hdr *ip6h;
 
 	udp_len = len + sizeof(*udph);
@@ -453,7 +453,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
 		put_unaligned(0x45, (unsigned char *)iph);
 		iph->tos      = 0;
 		put_unaligned(htons(ip_len), &(iph->tot_len));
-		iph->id       = htons(atomic_inc_return(&ip_ident));
+		iph->id       = htons(atomic_inc_return_unchecked(&ip_ident));
 		iph->frag_off = 0;
 		iph->ttl      = 64;
 		iph->protocol = IPPROTO_UDP;
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index fc17a9d..d4a3d88 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -3725,7 +3725,7 @@ static int __net_init pg_net_init(struct net *net)
 	pn->net = net;
 	INIT_LIST_HEAD(&pn->pktgen_threads);
 	pn->pktgen_exiting = false;
-	pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
+	pn->proc_dir = proc_mkdir_restrict(PG_PROC_DIR, pn->net->proc_net);
 	if (!pn->proc_dir) {
 		pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
 		return -ENODEV;
diff --git a/net/core/ptp_classifier.c b/net/core/ptp_classifier.c
deleted file mode 100644
index d3027a7..0000000
--- a/net/core/ptp_classifier.c
+++ /dev/null
@@ -1,141 +0,0 @@
-/* PTP classifier
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-
-/* The below program is the bpf_asm (tools/net/) representation of
- * the opcode array in the ptp_filter structure.
- *
- * For convenience, this can easily be altered and reviewed with
- * bpf_asm and bpf_dbg, e.g. `./bpf_asm -c prog` where prog is a
- * simple file containing the below program:
- *
- * ldh [12]                        ; load ethertype
- *
- * ; PTP over UDP over IPv4 over Ethernet
- * test_ipv4:
- *   jneq #0x800, test_ipv6        ; ETH_P_IP ?
- *   ldb [23]                      ; load proto
- *   jneq #17, drop_ipv4           ; IPPROTO_UDP ?
- *   ldh [20]                      ; load frag offset field
- *   jset #0x1fff, drop_ipv4       ; don't allow fragments
- *   ldxb 4*([14]&0xf)             ; load IP header len
- *   ldh [x + 16]                  ; load UDP dst port
- *   jneq #319, drop_ipv4          ; is port PTP_EV_PORT ?
- *   ldh [x + 22]                  ; load payload
- *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x10                      ; PTP_CLASS_IPV4
- *   ret a                         ; return PTP class
- *   drop_ipv4: ret #0x0           ; PTP_CLASS_NONE
- *
- * ; PTP over UDP over IPv6 over Ethernet
- * test_ipv6:
- *   jneq #0x86dd, test_8021q      ; ETH_P_IPV6 ?
- *   ldb [20]                      ; load proto
- *   jneq #17, drop_ipv6           ; IPPROTO_UDP ?
- *   ldh [56]                      ; load UDP dst port
- *   jneq #319, drop_ipv6          ; is port PTP_EV_PORT ?
- *   ldh [62]                      ; load payload
- *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x20                      ; PTP_CLASS_IPV6
- *   ret a                         ; return PTP class
- *   drop_ipv6: ret #0x0           ; PTP_CLASS_NONE
- *
- * ; PTP over 802.1Q over Ethernet
- * test_8021q:
- *   jneq #0x8100, test_ieee1588   ; ETH_P_8021Q ?
- *   ldh [16]                      ; load inner type
- *   jneq #0x88f7, drop_ieee1588   ; ETH_P_1588 ?
- *   ldb [18]                      ; load payload
- *   and #0x8                      ; as we don't have ports here, test
- *   jneq #0x0, drop_ieee1588      ; for PTP_GEN_BIT and drop these
- *   ldh [18]                      ; reload payload
- *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x40                      ; PTP_CLASS_V2_VLAN
- *   ret a                         ; return PTP class
- *
- * ; PTP over Ethernet
- * test_ieee1588:
- *   jneq #0x88f7, drop_ieee1588   ; ETH_P_1588 ?
- *   ldb [14]                      ; load payload
- *   and #0x8                      ; as we don't have ports here, test
- *   jneq #0x0, drop_ieee1588      ; for PTP_GEN_BIT and drop these
- *   ldh [14]                      ; reload payload
- *   and #0xf                      ; mask PTP_CLASS_VMASK
- *   or #0x30                      ; PTP_CLASS_L2
- *   ret a                         ; return PTP class
- *   drop_ieee1588: ret #0x0       ; PTP_CLASS_NONE
- */
-
-#include <linux/skbuff.h>
-#include <linux/filter.h>
-#include <linux/ptp_classify.h>
-
-static struct sk_filter *ptp_insns __read_mostly;
-
-unsigned int ptp_classify_raw(const struct sk_buff *skb)
-{
-	return SK_RUN_FILTER(ptp_insns, skb);
-}
-EXPORT_SYMBOL_GPL(ptp_classify_raw);
-
-void __init ptp_classifier_init(void)
-{
-	static struct sock_filter ptp_filter[] __initdata = {
-		{ 0x28,  0,  0, 0x0000000c },
-		{ 0x15,  0, 12, 0x00000800 },
-		{ 0x30,  0,  0, 0x00000017 },
-		{ 0x15,  0,  9, 0x00000011 },
-		{ 0x28,  0,  0, 0x00000014 },
-		{ 0x45,  7,  0, 0x00001fff },
-		{ 0xb1,  0,  0, 0x0000000e },
-		{ 0x48,  0,  0, 0x00000010 },
-		{ 0x15,  0,  4, 0x0000013f },
-		{ 0x48,  0,  0, 0x00000016 },
-		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000010 },
-		{ 0x16,  0,  0, 0x00000000 },
-		{ 0x06,  0,  0, 0x00000000 },
-		{ 0x15,  0,  9, 0x000086dd },
-		{ 0x30,  0,  0, 0x00000014 },
-		{ 0x15,  0,  6, 0x00000011 },
-		{ 0x28,  0,  0, 0x00000038 },
-		{ 0x15,  0,  4, 0x0000013f },
-		{ 0x28,  0,  0, 0x0000003e },
-		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000020 },
-		{ 0x16,  0,  0, 0x00000000 },
-		{ 0x06,  0,  0, 0x00000000 },
-		{ 0x15,  0,  9, 0x00008100 },
-		{ 0x28,  0,  0, 0x00000010 },
-		{ 0x15,  0, 15, 0x000088f7 },
-		{ 0x30,  0,  0, 0x00000012 },
-		{ 0x54,  0,  0, 0x00000008 },
-		{ 0x15,  0, 12, 0x00000000 },
-		{ 0x28,  0,  0, 0x00000012 },
-		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000040 },
-		{ 0x16,  0,  0, 0x00000000 },
-		{ 0x15,  0,  7, 0x000088f7 },
-		{ 0x30,  0,  0, 0x0000000e },
-		{ 0x54,  0,  0, 0x00000008 },
-		{ 0x15,  0,  4, 0x00000000 },
-		{ 0x28,  0,  0, 0x0000000e },
-		{ 0x54,  0,  0, 0x0000000f },
-		{ 0x44,  0,  0, 0x00000030 },
-		{ 0x16,  0,  0, 0x00000000 },
-		{ 0x06,  0,  0, 0x00000000 },
-	};
-	struct sock_fprog_kern ptp_prog = {
-		.len = ARRAY_SIZE(ptp_filter), .filter = ptp_filter,
-	};
-
-	BUG_ON(sk_unattached_filter_create(&ptp_insns, &ptp_prog));
-}
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 1063996..0729c19 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -58,7 +58,7 @@ struct rtnl_link {
 	rtnl_doit_func		doit;
 	rtnl_dumpit_func	dumpit;
 	rtnl_calcit_func 	calcit;
-};
+} __no_const;
 
 static DEFINE_MUTEX(rtnl_mutex);
 
@@ -299,10 +299,13 @@ int __rtnl_link_register(struct rtnl_link_ops *ops)
 	if (rtnl_link_ops_get(ops->kind))
 		return -EEXIST;
 
-	if (!ops->dellink)
-		ops->dellink = unregister_netdevice_queue;
+	if (!ops->dellink) {
+		pax_open_kernel();
+		*(void **)&ops->dellink = unregister_netdevice_queue;
+		pax_close_kernel();
+	}
 
-	list_add_tail(&ops->list, &link_ops);
+	pax_list_add_tail((struct list_head *)&ops->list, &link_ops);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(__rtnl_link_register);
@@ -349,7 +352,7 @@ void __rtnl_link_unregister(struct rtnl_link_ops *ops)
 	for_each_net(net) {
 		__rtnl_kill_links(net, ops);
 	}
-	list_del(&ops->list);
+	pax_list_del((struct list_head *)&ops->list);
 }
 EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
 
@@ -1008,7 +1011,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 	    (dev->ifalias &&
 	     nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
 	    nla_put_u32(skb, IFLA_CARRIER_CHANGES,
-			atomic_read(&dev->carrier_changes)))
+			atomic_read_unchecked(&dev->carrier_changes)))
 		goto nla_put_failure;
 
 	if (1) {
diff --git a/net/core/scm.c b/net/core/scm.c
index b442e7e..6f5b5a2 100644
--- a/net/core/scm.c
+++ b/net/core/scm.c
@@ -210,7 +210,7 @@ EXPORT_SYMBOL(__scm_send);
 int put_cmsg(struct msghdr * msg, int level, int type, int len, void *data)
 {
 	struct cmsghdr __user *cm
-		= (__force struct cmsghdr __user *)msg->msg_control;
+		= (struct cmsghdr __force_user *)msg->msg_control;
 	struct cmsghdr cmhdr;
 	int cmlen = CMSG_LEN(len);
 	int err;
@@ -233,7 +233,7 @@ int put_cmsg(struct msghdr * msg, int level, int type, int len, void *data)
 	err = -EFAULT;
 	if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
 		goto out;
-	if (copy_to_user(CMSG_DATA(cm), data, cmlen - sizeof(struct cmsghdr)))
+	if (copy_to_user((void __force_user *)CMSG_DATA((void __force_kernel *)cm), data, cmlen - sizeof(struct cmsghdr)))
 		goto out;
 	cmlen = CMSG_SPACE(len);
 	if (msg->msg_controllen < cmlen)
@@ -249,7 +249,7 @@ EXPORT_SYMBOL(put_cmsg);
 void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
 {
 	struct cmsghdr __user *cm
-		= (__force struct cmsghdr __user*)msg->msg_control;
+		= (struct cmsghdr __force_user *)msg->msg_control;
 
 	int fdmax = 0;
 	int fdnum = scm->fp->count;
@@ -269,7 +269,7 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
 	if (fdnum < fdmax)
 		fdmax = fdnum;
 
-	for (i=0, cmfptr=(__force int __user *)CMSG_DATA(cm); i<fdmax;
+	for (i=0, cmfptr=(int __force_user *)CMSG_DATA((void __force_kernel *)cm); i<fdmax;
 	     i++, cmfptr++)
 	{
 		struct socket *sock;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 58ff88e..af9b458 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2010,7 +2010,7 @@ EXPORT_SYMBOL(__skb_checksum);
 __wsum skb_checksum(const struct sk_buff *skb, int offset,
 		    int len, __wsum csum)
 {
-	const struct skb_checksum_ops ops = {
+	static const struct skb_checksum_ops ops = {
 		.update  = csum_partial_ext,
 		.combine = csum_block_add_ext,
 	};
@@ -3233,13 +3233,15 @@ void __init skb_init(void)
 	skbuff_head_cache = kmem_cache_create("skbuff_head_cache",
 					      sizeof(struct sk_buff),
 					      0,
-					      SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+					      SLAB_HWCACHE_ALIGN|SLAB_PANIC|
+					      SLAB_NO_SANITIZE,
 					      NULL);
 	skbuff_fclone_cache = kmem_cache_create("skbuff_fclone_cache",
 						(2*sizeof(struct sk_buff)) +
 						sizeof(atomic_t),
 						0,
-						SLAB_HWCACHE_ALIGN|SLAB_PANIC,
+						SLAB_HWCACHE_ALIGN|SLAB_PANIC|
+						SLAB_NO_SANITIZE,
 						NULL);
 }
 
diff --git a/net/core/sock.c b/net/core/sock.c
index 026e01f..f54f908 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -442,7 +442,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	struct sk_buff_head *list = &sk->sk_receive_queue;
 
 	if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) {
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		trace_sock_rcvqueue_full(sk, skb);
 		return -ENOMEM;
 	}
@@ -452,7 +452,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 		return err;
 
 	if (!sk_rmem_schedule(sk, skb, skb->truesize)) {
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		return -ENOBUFS;
 	}
 
@@ -472,7 +472,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	skb_dst_force(skb);
 
 	spin_lock_irqsave(&list->lock, flags);
-	skb->dropcount = atomic_read(&sk->sk_drops);
+	skb->dropcount = atomic_read_unchecked(&sk->sk_drops);
 	__skb_queue_tail(list, skb);
 	spin_unlock_irqrestore(&list->lock, flags);
 
@@ -492,7 +492,7 @@ int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)
 	skb->dev = NULL;
 
 	if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		goto discard_and_relse;
 	}
 	if (nested)
@@ -510,7 +510,7 @@ int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)
 		mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
 	} else if (sk_add_backlog(sk, skb, sk->sk_rcvbuf)) {
 		bh_unlock_sock(sk);
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		goto discard_and_relse;
 	}
 
@@ -998,12 +998,12 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
 		struct timeval tm;
 	} v;
 
-	int lv = sizeof(int);
-	int len;
+	unsigned int lv = sizeof(int);
+	unsigned int len;
 
 	if (get_user(len, optlen))
 		return -EFAULT;
-	if (len < 0)
+	if (len > INT_MAX)
 		return -EINVAL;
 
 	memset(&v, 0, sizeof(v));
@@ -1155,11 +1155,11 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
 
 	case SO_PEERNAME:
 	{
-		char address[128];
+		char address[_K_SS_MAXSIZE];
 
 		if (sock->ops->getname(sock, (struct sockaddr *)address, &lv, 2))
 			return -ENOTCONN;
-		if (lv < len)
+		if (lv < len || sizeof address < len)
 			return -EINVAL;
 		if (copy_to_user(optval, address, len))
 			return -EFAULT;
@@ -1240,7 +1240,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
 
 	if (len > lv)
 		len = lv;
-	if (copy_to_user(optval, &v, len))
+	if (len > sizeof(v) || copy_to_user(optval, &v, len))
 		return -EFAULT;
 lenout:
 	if (put_user(len, optlen))
@@ -2375,7 +2375,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
 	 */
 	smp_wmb();
 	atomic_set(&sk->sk_refcnt, 1);
-	atomic_set(&sk->sk_drops, 0);
+	atomic_set_unchecked(&sk->sk_drops, 0);
 }
 EXPORT_SYMBOL(sock_init_data);
 
@@ -2503,6 +2503,7 @@ void sock_enable_timestamp(struct sock *sk, int flag)
 int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len,
 		       int level, int type)
 {
+	struct sock_extended_err ee;
 	struct sock_exterr_skb *serr;
 	struct sk_buff *skb, *skb2;
 	int copied, err;
@@ -2524,7 +2525,8 @@ int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len,
 	sock_recv_timestamp(msg, sk, skb);
 
 	serr = SKB_EXT_ERR(skb);
-	put_cmsg(msg, level, type, sizeof(serr->ee), &serr->ee);
+	ee = serr->ee;
+	put_cmsg(msg, level, type, sizeof ee, &ee);
 
 	msg->msg_flags |= MSG_ERRQUEUE;
 	err = copied;
diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c
index a4216a4..773e3d7 100644
--- a/net/core/sock_diag.c
+++ b/net/core/sock_diag.c
@@ -9,26 +9,33 @@
 #include <linux/inet_diag.h>
 #include <linux/sock_diag.h>
 
-static const struct sock_diag_handler *sock_diag_handlers[AF_MAX];
+static const struct sock_diag_handler *sock_diag_handlers[AF_MAX] __read_only;
 static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh);
 static DEFINE_MUTEX(sock_diag_table_mutex);
 
 int sock_diag_check_cookie(void *sk, __u32 *cookie)
 {
+#ifndef CONFIG_GRKERNSEC_HIDESYM
 	if ((cookie[0] != INET_DIAG_NOCOOKIE ||
 	     cookie[1] != INET_DIAG_NOCOOKIE) &&
 	    ((u32)(unsigned long)sk != cookie[0] ||
 	     (u32)((((unsigned long)sk) >> 31) >> 1) != cookie[1]))
 		return -ESTALE;
 	else
+#endif
 		return 0;
 }
 EXPORT_SYMBOL_GPL(sock_diag_check_cookie);
 
 void sock_diag_save_cookie(void *sk, __u32 *cookie)
 {
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	cookie[0] = 0;
+	cookie[1] = 0;
+#else
 	cookie[0] = (u32)(unsigned long)sk;
 	cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1);
+#endif
 }
 EXPORT_SYMBOL_GPL(sock_diag_save_cookie);
 
@@ -52,10 +59,9 @@ EXPORT_SYMBOL_GPL(sock_diag_put_meminfo);
 int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
 			     struct sk_buff *skb, int attrtype)
 {
-	struct sock_fprog_kern *fprog;
-	struct sk_filter *filter;
 	struct nlattr *attr;
-	unsigned int flen;
+	struct sk_filter *filter;
+	unsigned int len;
 	int err = 0;
 
 	if (!may_report_filterinfo) {
@@ -64,20 +70,24 @@ int sock_diag_put_filterinfo(bool may_report_filterinfo, struct sock *sk,
 	}
 
 	rcu_read_lock();
+
 	filter = rcu_dereference(sk->sk_filter);
-	if (!filter)
-		goto out;
+	len = filter ? filter->len * sizeof(struct sock_filter) : 0;
 
-	fprog = filter->orig_prog;
-	flen = sk_filter_proglen(fprog);
-
-	attr = nla_reserve(skb, attrtype, flen);
+	attr = nla_reserve(skb, attrtype, len);
 	if (attr == NULL) {
 		err = -EMSGSIZE;
 		goto out;
 	}
 
-	memcpy(nla_data(attr), fprog->filter, flen);
+	if (filter) {
+		struct sock_filter *fb = (struct sock_filter *)nla_data(attr);
+		int i;
+
+		for (i = 0; i < filter->len; i++, fb++)
+			sk_decode_filter(&filter->insns[i], fb);
+	}
+
 out:
 	rcu_read_unlock();
 	return err;
@@ -110,8 +120,11 @@ int sock_diag_register(const struct sock_diag_handler *hndl)
 	mutex_lock(&sock_diag_table_mutex);
 	if (sock_diag_handlers[hndl->family])
 		err = -EBUSY;
-	else
+	else {
+		pax_open_kernel();
 		sock_diag_handlers[hndl->family] = hndl;
+		pax_close_kernel();
+	}
 	mutex_unlock(&sock_diag_table_mutex);
 
 	return err;
@@ -127,7 +140,9 @@ void sock_diag_unregister(const struct sock_diag_handler *hnld)
 
 	mutex_lock(&sock_diag_table_mutex);
 	BUG_ON(sock_diag_handlers[family] != hnld);
+	pax_open_kernel();
 	sock_diag_handlers[family] = NULL;
+	pax_close_kernel();
 	mutex_unlock(&sock_diag_table_mutex);
 }
 EXPORT_SYMBOL_GPL(sock_diag_unregister);
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index cf9cd13..8b56af3 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -32,7 +32,7 @@ static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
 {
 	unsigned int orig_size, size;
 	int ret, i;
-	struct ctl_table tmp = {
+	ctl_table_no_const tmp = {
 		.data = &size,
 		.maxlen = sizeof(size),
 		.mode = table->mode
@@ -200,7 +200,7 @@ static int set_default_qdisc(struct ctl_table *table, int write,
 			     void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	char id[IFNAMSIZ];
-	struct ctl_table tbl = {
+	ctl_table_no_const tbl = {
 		.data = id,
 		.maxlen = IFNAMSIZ,
 	};
@@ -379,13 +379,12 @@ static struct ctl_table netns_core_table[] = {
 
 static __net_init int sysctl_core_net_init(struct net *net)
 {
-	struct ctl_table *tbl;
+	ctl_table_no_const *tbl = NULL;
 
 	net->core.sysctl_somaxconn = SOMAXCONN;
 
-	tbl = netns_core_table;
 	if (!net_eq(net, &init_net)) {
-		tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL);
+		tbl = kmemdup(netns_core_table, sizeof(netns_core_table), GFP_KERNEL);
 		if (tbl == NULL)
 			goto err_dup;
 
@@ -395,17 +394,16 @@ static __net_init int sysctl_core_net_init(struct net *net)
 		if (net->user_ns != &init_user_ns) {
 			tbl[0].procname = NULL;
 		}
-	}
-
-	net->core.sysctl_hdr = register_net_sysctl(net, "net/core", tbl);
+		net->core.sysctl_hdr = register_net_sysctl(net, "net/core", tbl);
+	} else
+		net->core.sysctl_hdr = register_net_sysctl(net, "net/core", netns_core_table);
 	if (net->core.sysctl_hdr == NULL)
 		goto err_reg;
 
 	return 0;
 
 err_reg:
-	if (tbl != netns_core_table)
-		kfree(tbl);
+	kfree(tbl);
 err_dup:
 	return -ENOMEM;
 }
@@ -420,7 +418,7 @@ static __net_exit void sysctl_core_net_exit(struct net *net)
 	kfree(tbl);
 }
 
-static __net_initdata struct pernet_operations sysctl_core_ops = {
+static __net_initconst struct pernet_operations sysctl_core_ops = {
 	.init = sysctl_core_net_init,
 	.exit = sysctl_core_net_exit,
 };
diff --git a/net/core/timestamping.c b/net/core/timestamping.c
index 6521dfd..661b5a4 100644
--- a/net/core/timestamping.c
+++ b/net/core/timestamping.c
@@ -23,11 +23,16 @@
 #include <linux/skbuff.h>
 #include <linux/export.h>
 
+static struct sock_filter ptp_filter[] = {
+	PTP_FILTER
+};
+
 static unsigned int classify(const struct sk_buff *skb)
 {
-	if (likely(skb->dev && skb->dev->phydev &&
+	if (likely(skb->dev &&
+		   skb->dev->phydev &&
 		   skb->dev->phydev->drv))
-		return ptp_classify_raw(skb);
+		return sk_run_filter(skb, ptp_filter);
 	else
 		return PTP_CLASS_NONE;
 }
@@ -55,13 +60,11 @@ void skb_clone_tx_timestamp(struct sk_buff *skb)
 		if (likely(phydev->drv->txtstamp)) {
 			if (!atomic_inc_not_zero(&sk->sk_refcnt))
 				return;
-
 			clone = skb_clone(skb, GFP_ATOMIC);
 			if (!clone) {
 				sock_put(sk);
 				return;
 			}
-
 			clone->sk = sk;
 			phydev->drv->txtstamp(phydev, clone, type);
 		}
@@ -86,15 +89,12 @@ void skb_complete_tx_timestamp(struct sk_buff *skb,
 	}
 
 	*skb_hwtstamps(skb) = *hwtstamps;
-
 	serr = SKB_EXT_ERR(skb);
 	memset(serr, 0, sizeof(*serr));
 	serr->ee.ee_errno = ENOMSG;
 	serr->ee.ee_origin = SO_EE_ORIGIN_TIMESTAMPING;
 	skb->sk = NULL;
-
 	err = sock_queue_err_skb(sk, skb);
-
 	sock_put(sk);
 	if (err)
 		kfree_skb(skb);
@@ -132,3 +132,8 @@ bool skb_defer_rx_timestamp(struct sk_buff *skb)
 	return false;
 }
 EXPORT_SYMBOL_GPL(skb_defer_rx_timestamp);
+
+void __init skb_timestamping_init(void)
+{
+	BUG_ON(sk_chk_filter(ptp_filter, ARRAY_SIZE(ptp_filter)));
+}
diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
index ae011b4..d2d18bf 100644
--- a/net/decnet/af_decnet.c
+++ b/net/decnet/af_decnet.c
@@ -465,6 +465,7 @@ static struct proto dn_proto = {
 	.sysctl_rmem		= sysctl_decnet_rmem,
 	.max_header		= DN_MAX_NSP_DATA_HEADER + 64,
 	.obj_size		= sizeof(struct dn_sock),
+	.slab_flags		= SLAB_USERCOPY,
 };
 
 static struct sock *dn_alloc_sock(struct net *net, struct socket *sock, gfp_t gfp)
diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 3b726f3..1af6368 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -200,7 +200,7 @@ static struct dn_dev_sysctl_table {
 		.extra1 = &min_t3,
 		.extra2 = &max_t3
 	},
-	{0}
+	{ }
 	},
 };
 
diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c
index 5325b54..a0d4d69 100644
--- a/net/decnet/sysctl_net_decnet.c
+++ b/net/decnet/sysctl_net_decnet.c
@@ -174,7 +174,7 @@ static int dn_node_address_handler(struct ctl_table *table, int write,
 
 	if (len > *lenp) len = *lenp;
 
-	if (copy_to_user(buffer, addr, len))
+	if (len > sizeof addr || copy_to_user(buffer, addr, len))
 		return -EFAULT;
 
 	*lenp = len;
@@ -237,7 +237,7 @@ static int dn_def_dev_handler(struct ctl_table *table, int write,
 
 	if (len > *lenp) len = *lenp;
 
-	if (copy_to_user(buffer, devname, len))
+	if (len > sizeof devname || copy_to_user(buffer, devname, len))
 		return -EFAULT;
 
 	*lenp = len;
diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
index 6f1428c..9586b83 100644
--- a/net/ieee802154/reassembly.c
+++ b/net/ieee802154/reassembly.c
@@ -438,14 +438,13 @@ static struct ctl_table lowpan_frags_ctl_table[] = {
 
 static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 	struct ctl_table_header *hdr;
 	struct netns_ieee802154_lowpan *ieee802154_lowpan =
 		net_ieee802154_lowpan(net);
 
-	table = lowpan_frags_ns_ctl_table;
 	if (!net_eq(net, &init_net)) {
-		table = kmemdup(table, sizeof(lowpan_frags_ns_ctl_table),
+		table = kmemdup(lowpan_frags_ns_ctl_table, sizeof(lowpan_frags_ns_ctl_table),
 				GFP_KERNEL);
 		if (table == NULL)
 			goto err_alloc;
@@ -458,9 +457,9 @@ static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
 		/* Don't export sysctls to unprivileged users */
 		if (net->user_ns != &init_user_ns)
 			table[0].procname = NULL;
-	}
-
-	hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", table);
+		hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", table);
+	} else
+		hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", lowpan_frags_ns_ctl_table);
 	if (hdr == NULL)
 		goto err_reg;
 
@@ -468,8 +467,7 @@ static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
 	return 0;
 
 err_reg:
-	if (!net_eq(net, &init_net))
-		kfree(table);
+	kfree(table);
 err_alloc:
 	return -ENOMEM;
 }
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index e944937..368fe78 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1540,7 +1540,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 		idx = 0;
 		head = &net->dev_index_head[h];
 		rcu_read_lock();
-		cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
+		cb->seq = atomic_read_unchecked(&net->ipv4.dev_addr_genid) ^
 			  net->dev_base_seq;
 		hlist_for_each_entry_rcu(dev, head, index_hlist) {
 			if (idx < s_idx)
@@ -1858,7 +1858,7 @@ static int inet_netconf_dump_devconf(struct sk_buff *skb,
 		idx = 0;
 		head = &net->dev_index_head[h];
 		rcu_read_lock();
-		cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
+		cb->seq = atomic_read_unchecked(&net->ipv4.dev_addr_genid) ^
 			  net->dev_base_seq;
 		hlist_for_each_entry_rcu(dev, head, index_hlist) {
 			if (idx < s_idx)
@@ -2093,7 +2093,7 @@ static int ipv4_doint_and_flush(struct ctl_table *ctl, int write,
 #define DEVINET_SYSCTL_FLUSHING_ENTRY(attr, name) \
 	DEVINET_SYSCTL_COMPLEX_ENTRY(attr, name, ipv4_doint_and_flush)
 
-static struct devinet_sysctl_table {
+static const struct devinet_sysctl_table {
 	struct ctl_table_header *sysctl_header;
 	struct ctl_table devinet_vars[__IPV4_DEVCONF_MAX];
 } devinet_sysctl = {
@@ -2215,7 +2215,7 @@ static __net_init int devinet_init_net(struct net *net)
 	int err;
 	struct ipv4_devconf *all, *dflt;
 #ifdef CONFIG_SYSCTL
-	struct ctl_table *tbl = ctl_forward_entry;
+	ctl_table_no_const *tbl = NULL;
 	struct ctl_table_header *forw_hdr;
 #endif
 
@@ -2233,7 +2233,7 @@ static __net_init int devinet_init_net(struct net *net)
 			goto err_alloc_dflt;
 
 #ifdef CONFIG_SYSCTL
-		tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL);
+		tbl = kmemdup(ctl_forward_entry, sizeof(ctl_forward_entry), GFP_KERNEL);
 		if (tbl == NULL)
 			goto err_alloc_ctl;
 
@@ -2253,7 +2253,10 @@ static __net_init int devinet_init_net(struct net *net)
 		goto err_reg_dflt;
 
 	err = -ENOMEM;
-	forw_hdr = register_net_sysctl(net, "net/ipv4", tbl);
+	if (!net_eq(net, &init_net))
+		forw_hdr = register_net_sysctl(net, "net/ipv4", tbl);
+	else
+		forw_hdr = register_net_sysctl(net, "net/ipv4", ctl_forward_entry);
 	if (forw_hdr == NULL)
 		goto err_reg_ctl;
 	net->ipv4.forw_hdr = forw_hdr;
@@ -2269,8 +2272,7 @@ err_reg_ctl:
 err_reg_dflt:
 	__devinet_sysctl_unregister(all);
 err_reg_all:
-	if (tbl != ctl_forward_entry)
-		kfree(tbl);
+	kfree(tbl);
 err_alloc_ctl:
 #endif
 	if (dflt != &ipv4_devconf_dflt)
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index 255aa99..45c78f8 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -1015,12 +1015,12 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 		fib_sync_up(dev);
 #endif
-		atomic_inc(&net->ipv4.dev_addr_genid);
+		atomic_inc_unchecked(&net->ipv4.dev_addr_genid);
 		rt_cache_flush(dev_net(dev));
 		break;
 	case NETDEV_DOWN:
 		fib_del_ifaddr(ifa, NULL);
-		atomic_inc(&net->ipv4.dev_addr_genid);
+		atomic_inc_unchecked(&net->ipv4.dev_addr_genid);
 		if (ifa->ifa_dev->ifa_list == NULL) {
 			/* Last address was deleted from this interface.
 			 * Disable IP.
@@ -1058,7 +1058,7 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
 #ifdef CONFIG_IP_ROUTE_MULTIPATH
 		fib_sync_up(dev);
 #endif
-		atomic_inc(&net->ipv4.dev_addr_genid);
+		atomic_inc_unchecked(&net->ipv4.dev_addr_genid);
 		rt_cache_flush(net);
 		break;
 	case NETDEV_DOWN:
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index b10cd43a..22327f9 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -768,7 +768,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh)
 	nh->nh_saddr = inet_select_addr(nh->nh_dev,
 					nh->nh_gw,
 					nh->nh_parent->fib_scope);
-	nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid);
+	nh->nh_saddr_genid = atomic_read_unchecked(&net->ipv4.dev_addr_genid);
 
 	return nh->nh_saddr;
 }
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 43116e8..e3e6159 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -18,6 +18,7 @@
 #include <linux/sched.h>
 #include <linux/slab.h>
 #include <linux/wait.h>
+#include <linux/security.h>
 
 #include <net/inet_connection_sock.h>
 #include <net/inet_hashtables.h>
@@ -49,6 +50,8 @@ static unsigned int inet_sk_ehashfn(const struct sock *sk)
 	return inet_ehashfn(net, laddr, lport, faddr, fport);
 }
 
+extern void gr_update_task_in_ip_table(struct task_struct *task, const struct inet_sock *inet);
+
 /*
  * Allocate and initialize a new local port bind bucket.
  * The bindhash mutex for snum's hash chain must be held here.
@@ -554,6 +557,8 @@ ok:
 			twrefcnt += inet_twsk_bind_unhash(tw, hinfo);
 		spin_unlock(&head->lock);
 
+		gr_update_task_in_ip_table(current, inet_sk(sk));
+
 		if (tw) {
 			inet_twsk_deschedule(tw, death_row);
 			while (twrefcnt) {
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index bd5f592..e80e605 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -482,7 +482,7 @@ relookup:
 	if (p) {
 		p->daddr = *daddr;
 		atomic_set(&p->refcnt, 1);
-		atomic_set(&p->rid, 0);
+		atomic_set_unchecked(&p->rid, 0);
 		p->metrics[RTAX_LOCK-1] = INETPEER_METRICS_NEW;
 		p->rate_tokens = 0;
 		/* 60*HZ is arbitrary, but chosen enough high so that the first
diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
index ed32313..3762abe 100644
--- a/net/ipv4/ip_fragment.c
+++ b/net/ipv4/ip_fragment.c
@@ -284,7 +284,7 @@ static inline int ip_frag_too_far(struct ipq *qp)
 		return 0;
 
 	start = qp->rid;
-	end = atomic_inc_return(&peer->rid);
+	end = atomic_inc_return_unchecked(&peer->rid);
 	qp->rid = end;
 
 	rc = qp->q.fragments && (end - start) > max;
@@ -761,12 +761,11 @@ static struct ctl_table ip4_frags_ctl_table[] = {
 
 static int __net_init ip4_frags_ns_ctl_register(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 	struct ctl_table_header *hdr;
 
-	table = ip4_frags_ns_ctl_table;
 	if (!net_eq(net, &init_net)) {
-		table = kmemdup(table, sizeof(ip4_frags_ns_ctl_table), GFP_KERNEL);
+		table = kmemdup(ip4_frags_ns_ctl_table, sizeof(ip4_frags_ns_ctl_table), GFP_KERNEL);
 		if (table == NULL)
 			goto err_alloc;
 
@@ -777,9 +776,10 @@ static int __net_init ip4_frags_ns_ctl_register(struct net *net)
 		/* Don't export sysctls to unprivileged users */
 		if (net->user_ns != &init_user_ns)
 			table[0].procname = NULL;
-	}
+		hdr = register_net_sysctl(net, "net/ipv4", table);
+	} else
+		hdr = register_net_sysctl(net, "net/ipv4", ip4_frags_ns_ctl_table);
 
-	hdr = register_net_sysctl(net, "net/ipv4", table);
 	if (hdr == NULL)
 		goto err_reg;
 
@@ -787,8 +787,7 @@ static int __net_init ip4_frags_ns_ctl_register(struct net *net)
 	return 0;
 
 err_reg:
-	if (!net_eq(net, &init_net))
-		kfree(table);
+	kfree(table);
 err_alloc:
 	return -ENOMEM;
 }
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index 9b84254..c776611 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -115,7 +115,7 @@ static bool log_ecn_error = true;
 module_param(log_ecn_error, bool, 0644);
 MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
 
-static struct rtnl_link_ops ipgre_link_ops __read_mostly;
+static struct rtnl_link_ops ipgre_link_ops;
 static int ipgre_tunnel_init(struct net_device *dev);
 
 static int ipgre_net_id __read_mostly;
@@ -733,7 +733,7 @@ static const struct nla_policy ipgre_policy[IFLA_GRE_MAX + 1] = {
 	[IFLA_GRE_PMTUDISC]	= { .type = NLA_U8 },
 };
 
-static struct rtnl_link_ops ipgre_link_ops __read_mostly = {
+static struct rtnl_link_ops ipgre_link_ops = {
 	.kind		= "gre",
 	.maxtype	= IFLA_GRE_MAX,
 	.policy		= ipgre_policy,
@@ -747,7 +747,7 @@ static struct rtnl_link_ops ipgre_link_ops __read_mostly = {
 	.fill_info	= ipgre_fill_info,
 };
 
-static struct rtnl_link_ops ipgre_tap_ops __read_mostly = {
+static struct rtnl_link_ops ipgre_tap_ops = {
 	.kind		= "gretap",
 	.maxtype	= IFLA_GRE_MAX,
 	.policy		= ipgre_policy,
diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index 64741b9..6f334a2 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -1188,7 +1188,8 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname,
 		len = min_t(unsigned int, len, opt->optlen);
 		if (put_user(len, optlen))
 			return -EFAULT;
-		if (copy_to_user(optval, opt->__data, len))
+		if ((len > (sizeof(optbuf) - sizeof(struct ip_options))) ||
+		    copy_to_user(optval, opt->__data, len))
 			return -EFAULT;
 		return 0;
 	}
@@ -1319,7 +1320,7 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname,
 		if (sk->sk_type != SOCK_STREAM)
 			return -ENOPROTOOPT;
 
-		msg.msg_control = optval;
+		msg.msg_control = (void __force_kernel *)optval;
 		msg.msg_controllen = len;
 		msg.msg_flags = flags;
 
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index b8960f3..0f025db 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -45,7 +45,7 @@
 #include <net/net_namespace.h>
 #include <net/netns/generic.h>
 
-static struct rtnl_link_ops vti_link_ops __read_mostly;
+static struct rtnl_link_ops vti_link_ops;
 
 static int vti_net_id __read_mostly;
 static int vti_tunnel_init(struct net_device *dev);
@@ -519,7 +519,7 @@ static const struct nla_policy vti_policy[IFLA_VTI_MAX + 1] = {
 	[IFLA_VTI_REMOTE]	= { .len = FIELD_SIZEOF(struct iphdr, daddr) },
 };
 
-static struct rtnl_link_ops vti_link_ops __read_mostly = {
+static struct rtnl_link_ops vti_link_ops = {
 	.kind		= "vti",
 	.maxtype	= IFLA_VTI_MAX,
 	.policy		= vti_policy,
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index b3e86ea..18ce98c 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -334,7 +334,7 @@ static int __init ic_devinet_ioctl(unsigned int cmd, struct ifreq *arg)
 
 	mm_segment_t oldfs = get_fs();
 	set_fs(get_ds());
-	res = devinet_ioctl(&init_net, cmd, (struct ifreq __user *) arg);
+	res = devinet_ioctl(&init_net, cmd, (struct ifreq __force_user *) arg);
 	set_fs(oldfs);
 	return res;
 }
@@ -345,7 +345,7 @@ static int __init ic_dev_ioctl(unsigned int cmd, struct ifreq *arg)
 
 	mm_segment_t oldfs = get_fs();
 	set_fs(get_ds());
-	res = dev_ioctl(&init_net, cmd, (struct ifreq __user *) arg);
+	res = dev_ioctl(&init_net, cmd, (struct ifreq __force_user *) arg);
 	set_fs(oldfs);
 	return res;
 }
@@ -356,7 +356,7 @@ static int __init ic_route_ioctl(unsigned int cmd, struct rtentry *arg)
 
 	mm_segment_t oldfs = get_fs();
 	set_fs(get_ds());
-	res = ip_rt_ioctl(&init_net, cmd, (void __user *) arg);
+	res = ip_rt_ioctl(&init_net, cmd, (void __force_user *) arg);
 	set_fs(oldfs);
 	return res;
 }
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index 62eaa00..29b2dc2 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -124,7 +124,7 @@ MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
 static int ipip_net_id __read_mostly;
 
 static int ipip_tunnel_init(struct net_device *dev);
-static struct rtnl_link_ops ipip_link_ops __read_mostly;
+static struct rtnl_link_ops ipip_link_ops;
 
 static int ipip_err(struct sk_buff *skb, u32 info)
 {
@@ -409,7 +409,7 @@ static const struct nla_policy ipip_policy[IFLA_IPTUN_MAX + 1] = {
 	[IFLA_IPTUN_PMTUDISC]		= { .type = NLA_U8 },
 };
 
-static struct rtnl_link_ops ipip_link_ops __read_mostly = {
+static struct rtnl_link_ops ipip_link_ops = {
 	.kind		= "ipip",
 	.maxtype	= IFLA_IPTUN_MAX,
 	.policy		= ipip_policy,
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index f95b6f9..2ee2097 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -885,14 +885,14 @@ static int compat_table_info(const struct xt_table_info *info,
 #endif
 
 static int get_info(struct net *net, void __user *user,
-                    const int *len, int compat)
+                    int len, int compat)
 {
 	char name[XT_TABLE_MAXNAMELEN];
 	struct xt_table *t;
 	int ret;
 
-	if (*len != sizeof(struct arpt_getinfo)) {
-		duprintf("length %u != %Zu\n", *len,
+	if (len != sizeof(struct arpt_getinfo)) {
+		duprintf("length %u != %Zu\n", len,
 			 sizeof(struct arpt_getinfo));
 		return -EINVAL;
 	}
@@ -929,7 +929,7 @@ static int get_info(struct net *net, void __user *user,
 		info.size = private->size;
 		strcpy(info.name, name);
 
-		if (copy_to_user(user, &info, *len) != 0)
+		if (copy_to_user(user, &info, len) != 0)
 			ret = -EFAULT;
 		else
 			ret = 0;
@@ -1690,7 +1690,7 @@ static int compat_do_arpt_get_ctl(struct sock *sk, int cmd, void __user *user,
 
 	switch (cmd) {
 	case ARPT_SO_GET_INFO:
-		ret = get_info(sock_net(sk), user, len, 1);
+		ret = get_info(sock_net(sk), user, *len, 1);
 		break;
 	case ARPT_SO_GET_ENTRIES:
 		ret = compat_get_entries(sock_net(sk), user, len);
@@ -1735,7 +1735,7 @@ static int do_arpt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len
 
 	switch (cmd) {
 	case ARPT_SO_GET_INFO:
-		ret = get_info(sock_net(sk), user, len, 0);
+		ret = get_info(sock_net(sk), user, *len, 0);
 		break;
 
 	case ARPT_SO_GET_ENTRIES:
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 99e810f..3711b81 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1073,14 +1073,14 @@ static int compat_table_info(const struct xt_table_info *info,
 #endif
 
 static int get_info(struct net *net, void __user *user,
-                    const int *len, int compat)
+                    int len, int compat)
 {
 	char name[XT_TABLE_MAXNAMELEN];
 	struct xt_table *t;
 	int ret;
 
-	if (*len != sizeof(struct ipt_getinfo)) {
-		duprintf("length %u != %zu\n", *len,
+	if (len != sizeof(struct ipt_getinfo)) {
+		duprintf("length %u != %zu\n", len,
 			 sizeof(struct ipt_getinfo));
 		return -EINVAL;
 	}
@@ -1117,7 +1117,7 @@ static int get_info(struct net *net, void __user *user,
 		info.size = private->size;
 		strcpy(info.name, name);
 
-		if (copy_to_user(user, &info, *len) != 0)
+		if (copy_to_user(user, &info, len) != 0)
 			ret = -EFAULT;
 		else
 			ret = 0;
@@ -1973,7 +1973,7 @@ compat_do_ipt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 
 	switch (cmd) {
 	case IPT_SO_GET_INFO:
-		ret = get_info(sock_net(sk), user, len, 1);
+		ret = get_info(sock_net(sk), user, *len, 1);
 		break;
 	case IPT_SO_GET_ENTRIES:
 		ret = compat_get_entries(sock_net(sk), user, len);
@@ -2020,7 +2020,7 @@ do_ipt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 
 	switch (cmd) {
 	case IPT_SO_GET_INFO:
-		ret = get_info(sock_net(sk), user, len, 0);
+		ret = get_info(sock_net(sk), user, *len, 0);
 		break;
 
 	case IPT_SO_GET_ENTRIES:
diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
index 2510c02..cfb34fa 100644
--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
@@ -720,7 +720,7 @@ static int clusterip_net_init(struct net *net)
 	spin_lock_init(&cn->lock);
 
 #ifdef CONFIG_PROC_FS
-	cn->procdir = proc_mkdir("ipt_CLUSTERIP", net->proc_net);
+	cn->procdir = proc_mkdir_restrict("ipt_CLUSTERIP", net->proc_net);
 	if (!cn->procdir) {
 		pr_err("Unable to proc dir entry\n");
 		return -ENOMEM;
diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
index 044a0dd..3399751 100644
--- a/net/ipv4/ping.c
+++ b/net/ipv4/ping.c
@@ -59,7 +59,7 @@ struct ping_table {
 };
 
 static struct ping_table ping_table;
-struct pingv6_ops pingv6_ops;
+struct pingv6_ops *pingv6_ops;
 EXPORT_SYMBOL_GPL(pingv6_ops);
 
 static u16 ping_port_rover;
@@ -348,7 +348,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
 				return -ENODEV;
 			}
 		}
-		has_addr = pingv6_ops.ipv6_chk_addr(net, &addr->sin6_addr, dev,
+		has_addr = pingv6_ops->ipv6_chk_addr(net, &addr->sin6_addr, dev,
 						    scoped);
 		rcu_read_unlock();
 
@@ -556,7 +556,7 @@ void ping_err(struct sk_buff *skb, int offset, u32 info)
 		}
 #if IS_ENABLED(CONFIG_IPV6)
 	} else if (skb->protocol == htons(ETH_P_IPV6)) {
-		harderr = pingv6_ops.icmpv6_err_convert(type, code, &err);
+		harderr = pingv6_ops->icmpv6_err_convert(type, code, &err);
 #endif
 	}
 
@@ -574,7 +574,7 @@ void ping_err(struct sk_buff *skb, int offset, u32 info)
 				      info, (u8 *)icmph);
 #if IS_ENABLED(CONFIG_IPV6)
 		} else if (family == AF_INET6) {
-			pingv6_ops.ipv6_icmp_error(sk, skb, err, 0,
+			pingv6_ops->ipv6_icmp_error(sk, skb, err, 0,
 						   info, (u8 *)icmph);
 #endif
 		}
@@ -858,7 +858,7 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 			return ip_recv_error(sk, msg, len, addr_len);
 #if IS_ENABLED(CONFIG_IPV6)
 		} else if (family == AF_INET6) {
-			return pingv6_ops.ipv6_recv_error(sk, msg, len,
+			return pingv6_ops->ipv6_recv_error(sk, msg, len,
 							  addr_len);
 #endif
 		}
@@ -916,10 +916,10 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		}
 
 		if (inet6_sk(sk)->rxopt.all)
-			pingv6_ops.ip6_datagram_recv_common_ctl(sk, msg, skb);
+			pingv6_ops->ip6_datagram_recv_common_ctl(sk, msg, skb);
 		if (skb->protocol == htons(ETH_P_IPV6) &&
 		    inet6_sk(sk)->rxopt.all)
-			pingv6_ops.ip6_datagram_recv_specific_ctl(sk, msg, skb);
+			pingv6_ops->ip6_datagram_recv_specific_ctl(sk, msg, skb);
 		else if (skb->protocol == htons(ETH_P_IP) && isk->cmsg_flags)
 			ip_cmsg_recv(msg, skb);
 #endif
@@ -1111,7 +1111,7 @@ static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
 		from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
 		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp,
-		atomic_read(&sp->sk_drops));
+		atomic_read_unchecked(&sp->sk_drops));
 }
 
 static int ping_v4_seq_show(struct seq_file *seq, void *v)
diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
index 2c65160..213ecdf 100644
--- a/net/ipv4/raw.c
+++ b/net/ipv4/raw.c
@@ -311,7 +311,7 @@ static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
 int raw_rcv(struct sock *sk, struct sk_buff *skb)
 {
 	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		kfree_skb(skb);
 		return NET_RX_DROP;
 	}
@@ -748,16 +748,20 @@ static int raw_init(struct sock *sk)
 
 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
 {
+	struct icmp_filter filter;
+
 	if (optlen > sizeof(struct icmp_filter))
 		optlen = sizeof(struct icmp_filter);
-	if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
+	if (copy_from_user(&filter, optval, optlen))
 		return -EFAULT;
+	raw_sk(sk)->filter = filter;
 	return 0;
 }
 
 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
 {
 	int len, ret = -EFAULT;
+	struct icmp_filter filter;
 
 	if (get_user(len, optlen))
 		goto out;
@@ -767,8 +771,8 @@ static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *o
 	if (len > sizeof(struct icmp_filter))
 		len = sizeof(struct icmp_filter);
 	ret = -EFAULT;
-	if (put_user(len, optlen) ||
-	    copy_to_user(optval, &raw_sk(sk)->filter, len))
+	filter = raw_sk(sk)->filter;
+	if (put_user(len, optlen) || len > sizeof filter || copy_to_user(optval, &filter, len))
 		goto out;
 	ret = 0;
 out:	return ret;
@@ -997,7 +1001,7 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
 		0, 0L, 0,
 		from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
 		0, sock_i_ino(sp),
-		atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
+		atomic_read(&sp->sk_refcnt), sp, atomic_read_unchecked(&sp->sk_drops));
 }
 
 static int raw_seq_show(struct seq_file *seq, void *v)
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1901998..a9a850a 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -228,7 +228,7 @@ static const struct seq_operations rt_cache_seq_ops = {
 
 static int rt_cache_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &rt_cache_seq_ops);
+	return seq_open_restrict(file, &rt_cache_seq_ops);
 }
 
 static const struct file_operations rt_cache_seq_fops = {
@@ -319,7 +319,7 @@ static const struct seq_operations rt_cpu_seq_ops = {
 
 static int rt_cpu_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &rt_cpu_seq_ops);
+	return seq_open_restrict(file, &rt_cpu_seq_ops);
 }
 
 static const struct file_operations rt_cpu_seq_fops = {
@@ -357,7 +357,7 @@ static int rt_acct_proc_show(struct seq_file *m, void *v)
 
 static int rt_acct_proc_open(struct inode *inode, struct file *file)
 {
-	return single_open(file, rt_acct_proc_show, NULL);
+	return single_open_restrict(file, rt_acct_proc_show, NULL);
 }
 
 static const struct file_operations rt_acct_proc_fops = {
@@ -459,11 +459,11 @@ static struct neighbour *ipv4_neigh_lookup(const struct dst_entry *dst,
 
 #define IP_IDENTS_SZ 2048u
 struct ip_ident_bucket {
-	atomic_t	id;
+	atomic_unchecked_t	id;
 	u32		stamp32;
 };
 
-static struct ip_ident_bucket *ip_idents __read_mostly;
+static struct ip_ident_bucket ip_idents[IP_IDENTS_SZ] __read_mostly;
 
 /* In order to protect privacy, we add a perturbation to identifiers
  * if one generator is seldom used. This makes hard for an attacker
@@ -479,7 +479,7 @@ u32 ip_idents_reserve(u32 hash, int segs)
 	if (old != now && cmpxchg(&bucket->stamp32, old, now) == old)
 		delta = prandom_u32_max(now - old);
 
-	return atomic_add_return(segs + delta, &bucket->id) - segs;
+	return atomic_add_return_unchecked(segs + delta, &bucket->id) - segs;
 }
 EXPORT_SYMBOL(ip_idents_reserve);
 
@@ -2625,34 +2625,34 @@ static struct ctl_table ipv4_route_flush_table[] = {
 		.maxlen		= sizeof(int),
 		.mode		= 0200,
 		.proc_handler	= ipv4_sysctl_rtcache_flush,
+		.extra1		= &init_net,
 	},
 	{ },
 };
 
 static __net_init int sysctl_route_net_init(struct net *net)
 {
-	struct ctl_table *tbl;
+	ctl_table_no_const *tbl = NULL;
 
-	tbl = ipv4_route_flush_table;
 	if (!net_eq(net, &init_net)) {
-		tbl = kmemdup(tbl, sizeof(ipv4_route_flush_table), GFP_KERNEL);
+		tbl = kmemdup(ipv4_route_flush_table, sizeof(ipv4_route_flush_table), GFP_KERNEL);
 		if (tbl == NULL)
 			goto err_dup;
 
 		/* Don't export sysctls to unprivileged users */
 		if (net->user_ns != &init_user_ns)
 			tbl[0].procname = NULL;
-	}
-	tbl[0].extra1 = net;
+		tbl[0].extra1 = net;
+		net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", tbl);
+	} else
+		net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", ipv4_route_flush_table);
 
-	net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", tbl);
 	if (net->ipv4.route_hdr == NULL)
 		goto err_reg;
 	return 0;
 
 err_reg:
-	if (tbl != ipv4_route_flush_table)
-		kfree(tbl);
+	kfree(tbl);
 err_dup:
 	return -ENOMEM;
 }
@@ -2675,8 +2675,8 @@ static __net_initdata struct pernet_operations sysctl_route_ops = {
 
 static __net_init int rt_genid_init(struct net *net)
 {
-	atomic_set(&net->ipv4.rt_genid, 0);
-	atomic_set(&net->fnhe_genid, 0);
+	atomic_set_unchecked(&net->ipv4.rt_genid, 0);
+	atomic_set_unchecked(&net->fnhe_genid, 0);
 	get_random_bytes(&net->ipv4.dev_addr_genid,
 			 sizeof(net->ipv4.dev_addr_genid));
 	return 0;
@@ -2719,11 +2719,7 @@ int __init ip_rt_init(void)
 {
 	int rc = 0;
 
-	ip_idents = kmalloc(IP_IDENTS_SZ * sizeof(*ip_idents), GFP_KERNEL);
-	if (!ip_idents)
-		panic("IP: failed to allocate ip_idents\n");
-
-	prandom_bytes(ip_idents, IP_IDENTS_SZ * sizeof(*ip_idents));
+	prandom_bytes(ip_idents, sizeof(ip_idents));
 
 #ifdef CONFIG_IP_ROUTE_CLASSID
 	ip_rt_acct = __alloc_percpu(256 * sizeof(struct ip_rt_acct), __alignof__(struct ip_rt_acct));
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 79a007c..5023029 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -60,7 +60,7 @@ static int ipv4_local_port_range(struct ctl_table *table, int write,
 		container_of(table->data, struct net, ipv4.ip_local_ports.range);
 	int ret;
 	int range[2];
-	struct ctl_table tmp = {
+	ctl_table_no_const tmp = {
 		.data = &range,
 		.maxlen = sizeof(range),
 		.mode = table->mode,
@@ -118,7 +118,7 @@ static int ipv4_ping_group_range(struct ctl_table *table, int write,
 	int ret;
 	gid_t urange[2];
 	kgid_t low, high;
-	struct ctl_table tmp = {
+	ctl_table_no_const tmp = {
 		.data = &urange,
 		.maxlen = sizeof(urange),
 		.mode = table->mode,
@@ -149,7 +149,7 @@ static int proc_tcp_congestion_control(struct ctl_table *ctl, int write,
 				       void __user *buffer, size_t *lenp, loff_t *ppos)
 {
 	char val[TCP_CA_NAME_MAX];
-	struct ctl_table tbl = {
+	ctl_table_no_const tbl = {
 		.data = val,
 		.maxlen = TCP_CA_NAME_MAX,
 	};
@@ -168,7 +168,7 @@ static int proc_tcp_available_congestion_control(struct ctl_table *ctl,
 						 void __user *buffer, size_t *lenp,
 						 loff_t *ppos)
 {
-	struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
+	ctl_table_no_const tbl = { .maxlen = TCP_CA_BUF_MAX, };
 	int ret;
 
 	tbl.data = kmalloc(tbl.maxlen, GFP_USER);
@@ -185,7 +185,7 @@ static int proc_allowed_congestion_control(struct ctl_table *ctl,
 					   void __user *buffer, size_t *lenp,
 					   loff_t *ppos)
 {
-	struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
+	ctl_table_no_const tbl = { .maxlen = TCP_CA_BUF_MAX };
 	int ret;
 
 	tbl.data = kmalloc(tbl.maxlen, GFP_USER);
@@ -204,7 +204,7 @@ static int proc_tcp_fastopen_key(struct ctl_table *ctl, int write,
 				 void __user *buffer, size_t *lenp,
 				 loff_t *ppos)
 {
-	struct ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
+	ctl_table_no_const tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
 	struct tcp_fastopen_context *ctxt;
 	int ret;
 	u32  user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */
@@ -857,13 +857,12 @@ static struct ctl_table ipv4_net_table[] = {
 
 static __net_init int ipv4_sysctl_init_net(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 
-	table = ipv4_net_table;
 	if (!net_eq(net, &init_net)) {
 		int i;
 
-		table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL);
+		table = kmemdup(ipv4_net_table, sizeof(ipv4_net_table), GFP_KERNEL);
 		if (table == NULL)
 			goto err_alloc;
 
@@ -872,7 +871,10 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
 			table[i].data += (void *)net - (void *)&init_net;
 	}
 
-	net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);
+	if (!net_eq(net, &init_net))
+		net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);
+	else
+		net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", ipv4_net_table);
 	if (net->ipv4.ipv4_hdr == NULL)
 		goto err_reg;
 
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 40639c2..dfc86b2 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -754,7 +754,7 @@ static void tcp_update_pacing_rate(struct sock *sk)
 	 * without any lock. We want to make sure compiler wont store
 	 * intermediate values in this location.
 	 */
-	ACCESS_ONCE(sk->sk_pacing_rate) = min_t(u64, rate,
+	ACCESS_ONCE_RW(sk->sk_pacing_rate) = min_t(u64, rate,
 						sk->sk_max_pacing_rate);
 }
 
@@ -4478,7 +4478,7 @@ static struct sk_buff *tcp_collapse_one(struct sock *sk, struct sk_buff *skb,
  * simplifies code)
  */
 static void
-tcp_collapse(struct sock *sk, struct sk_buff_head *list,
+__intentional_overflow(5,6) tcp_collapse(struct sock *sk, struct sk_buff_head *list,
 	     struct sk_buff *head, struct sk_buff *tail,
 	     u32 start, u32 end)
 {
@@ -5536,6 +5536,7 @@ discard:
 	    tcp_paws_reject(&tp->rx_opt, 0))
 		goto discard_and_undo;
 
+#ifndef CONFIG_GRKERNSEC_NO_SIMULT_CONNECT
 	if (th->syn) {
 		/* We see SYN without ACK. It is attempt of
 		 * simultaneous connect with crossed SYNs.
@@ -5586,6 +5587,7 @@ discard:
 		goto discard;
 #endif
 	}
+#endif
 	/* "fifth, if neither of the SYN or RST bits is set then
 	 * drop the segment and return."
 	 */
@@ -5632,7 +5634,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
 			goto discard;
 
 		if (th->syn) {
-			if (th->fin)
+			if (th->fin || th->urg || th->psh)
 				goto discard;
 			if (icsk->icsk_af_ops->conn_request(sk, skb) < 0)
 				return 1;
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 77cccda..10122c4 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -91,6 +91,10 @@ int sysctl_tcp_low_latency __read_mostly;
 EXPORT_SYMBOL(sysctl_tcp_low_latency);
 
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+extern int grsec_enable_blackhole;
+#endif
+
 #ifdef CONFIG_TCP_MD5SIG
 static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key *key,
 			       __be32 daddr, __be32 saddr, const struct tcphdr *th);
@@ -1591,6 +1595,9 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
 	return 0;
 
 reset:
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	if (!grsec_enable_blackhole)
+#endif
 	tcp_v4_send_reset(rsk, skb);
 discard:
 	kfree_skb(skb);
@@ -1737,12 +1744,19 @@ int tcp_v4_rcv(struct sk_buff *skb)
 	TCP_SKB_CB(skb)->sacked	 = 0;
 
 	sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
-	if (!sk)
+	if (!sk) {
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		ret = 1;
+#endif
 		goto no_tcp_socket;
-
+	}
 process:
-	if (sk->sk_state == TCP_TIME_WAIT)
+	if (sk->sk_state == TCP_TIME_WAIT) {
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		ret = 2;
+#endif
 		goto do_time_wait;
+	}
 
 	if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
 		NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
@@ -1796,6 +1810,10 @@ csum_error:
 bad_packet:
 		TCP_INC_STATS_BH(net, TCP_MIB_INERRS);
 	} else {
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		if (!grsec_enable_blackhole || (ret == 1 &&
+		    (skb->dev->flags & IFF_LOOPBACK)))
+#endif
 		tcp_v4_send_reset(NULL, skb);
 	}
 
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index e68e0d4..0334263 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -27,6 +27,10 @@
 #include <net/inet_common.h>
 #include <net/xfrm.h>
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+extern int grsec_enable_blackhole;
+#endif
+
 int sysctl_tcp_syncookies __read_mostly = 1;
 EXPORT_SYMBOL(sysctl_tcp_syncookies);
 
@@ -740,7 +744,10 @@ embryonic_reset:
 		 * avoid becoming vulnerable to outside attack aiming at
 		 * resetting legit local connections.
 		 */
-		req->rsk_ops->send_reset(sk, skb);
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		if (!grsec_enable_blackhole)
+#endif
+			req->rsk_ops->send_reset(sk, skb);
 	} else if (fastopen) { /* received a valid RST pkt */
 		reqsk_fastopen_remove(sk, req, true);
 		tcp_reset(sk);
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index 3b66610..bfbe23a 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -238,7 +238,7 @@ static ssize_t tcpprobe_read(struct file *file, char __user *buf,
 		if (cnt + width >= len)
 			break;
 
-		if (copy_to_user(buf + cnt, tbuf, width))
+		if (width > sizeof tbuf || copy_to_user(buf + cnt, tbuf, width))
 			return -EFAULT;
 		cnt += width;
 	}
diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
index 286227a..c495a76 100644
--- a/net/ipv4/tcp_timer.c
+++ b/net/ipv4/tcp_timer.c
@@ -22,6 +22,10 @@
 #include <linux/gfp.h>
 #include <net/tcp.h>
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+extern int grsec_lastack_retries;
+#endif
+
 int sysctl_tcp_syn_retries __read_mostly = TCP_SYN_RETRIES;
 int sysctl_tcp_synack_retries __read_mostly = TCP_SYNACK_RETRIES;
 int sysctl_tcp_keepalive_time __read_mostly = TCP_KEEPALIVE_TIME;
@@ -192,6 +196,13 @@ static int tcp_write_timeout(struct sock *sk)
 		}
 	}
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	if ((sk->sk_state == TCP_LAST_ACK) &&
+	    (grsec_lastack_retries > 0) &&
+	    (grsec_lastack_retries < retry_until))
+		retry_until = grsec_lastack_retries;
+#endif
+
 	if (retransmits_timed_out(sk, retry_until,
 				  syn_set ? 0 : icsk->icsk_user_timeout, syn_set)) {
 		/* Has it gone just too far? */
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 7d5a866..4874211 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -87,6 +87,7 @@
 #include <linux/types.h>
 #include <linux/fcntl.h>
 #include <linux/module.h>
+#include <linux/security.h>
 #include <linux/socket.h>
 #include <linux/sockios.h>
 #include <linux/igmp.h>
@@ -113,6 +114,10 @@
 #include <net/busy_poll.h>
 #include "udp_impl.h"
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+extern int grsec_enable_blackhole;
+#endif
+
 struct udp_table udp_table __read_mostly;
 EXPORT_SYMBOL(udp_table);
 
@@ -615,6 +620,9 @@ found:
 	return s;
 }
 
+extern int gr_search_udp_recvmsg(struct sock *sk, const struct sk_buff *skb);
+extern int gr_search_udp_sendmsg(struct sock *sk, struct sockaddr_in *addr);
+
 /*
  * This routine is called by the ICMP module when it gets some
  * sort of error condition.  If err < 0 then the socket should
@@ -952,9 +960,18 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
 		dport = usin->sin_port;
 		if (dport == 0)
 			return -EINVAL;
+
+		err = gr_search_udp_sendmsg(sk, usin);
+		if (err)
+			return err;
 	} else {
 		if (sk->sk_state != TCP_ESTABLISHED)
 			return -EDESTADDRREQ;
+
+		err = gr_search_udp_sendmsg(sk, NULL);
+		if (err)
+			return err;
+
 		daddr = inet->inet_daddr;
 		dport = inet->inet_dport;
 		/* Open fast path for connected socket.
@@ -1202,7 +1219,7 @@ static unsigned int first_packet_length(struct sock *sk)
 				 IS_UDPLITE(sk));
 		UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
 				 IS_UDPLITE(sk));
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		__skb_unlink(skb, rcvq);
 		__skb_queue_tail(&list_kill, skb);
 	}
@@ -1282,6 +1299,10 @@ try_again:
 	if (!skb)
 		goto out;
 
+	err = gr_search_udp_recvmsg(sk, skb);
+	if (err)
+		goto out_free;
+
 	ulen = skb->len - sizeof(struct udphdr);
 	copied = len;
 	if (copied > ulen)
@@ -1315,7 +1336,7 @@ try_again:
 	if (unlikely(err)) {
 		trace_kfree_skb(skb, udp_recvmsg);
 		if (!peeked) {
-			atomic_inc(&sk->sk_drops);
+			atomic_inc_unchecked(&sk->sk_drops);
 			UDP_INC_STATS_USER(sock_net(sk),
 					   UDP_MIB_INERRORS, is_udplite);
 		}
@@ -1612,7 +1633,7 @@ csum_error:
 	UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
 drop:
 	UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
-	atomic_inc(&sk->sk_drops);
+	atomic_inc_unchecked(&sk->sk_drops);
 	kfree_skb(skb);
 	return -1;
 }
@@ -1631,7 +1652,7 @@ static void flush_stack(struct sock **stack, unsigned int count,
 			skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC);
 
 		if (!skb1) {
-			atomic_inc(&sk->sk_drops);
+			atomic_inc_unchecked(&sk->sk_drops);
 			UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,
 					 IS_UDPLITE(sk));
 			UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
@@ -1817,6 +1838,9 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
 		goto csum_error;
 
 	UDP_INC_STATS_BH(net, UDP_MIB_NOPORTS, proto == IPPROTO_UDPLITE);
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	if (!grsec_enable_blackhole || (skb->dev->flags & IFF_LOOPBACK))
+#endif
 	icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
 
 	/*
@@ -2403,7 +2427,7 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
 		from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
 		0, sock_i_ino(sp),
 		atomic_read(&sp->sk_refcnt), sp,
-		atomic_read(&sp->sk_drops));
+		atomic_read_unchecked(&sp->sk_drops));
 }
 
 int udp4_seq_show(struct seq_file *seq, void *v)
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 6156f68..d6ab46d 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -186,11 +186,11 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
 	fl4->flowi4_tos = iph->tos;
 }
 
-static inline int xfrm4_garbage_collect(struct dst_ops *ops)
+static int xfrm4_garbage_collect(struct dst_ops *ops)
 {
 	struct net *net = container_of(ops, struct net, xfrm.xfrm4_dst_ops);
 
-	xfrm4_policy_afinfo.garbage_collect(net);
+	xfrm_garbage_collect_deferred(net);
 	return (dst_entries_get_slow(ops) > ops->gc_thresh * 2);
 }
 
@@ -269,19 +269,18 @@ static struct ctl_table xfrm4_policy_table[] = {
 
 static int __net_init xfrm4_net_init(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 	struct ctl_table_header *hdr;
 
-	table = xfrm4_policy_table;
 	if (!net_eq(net, &init_net)) {
-		table = kmemdup(table, sizeof(xfrm4_policy_table), GFP_KERNEL);
+		table = kmemdup(xfrm4_policy_table, sizeof(xfrm4_policy_table), GFP_KERNEL);
 		if (!table)
 			goto err_alloc;
 
 		table[0].data = &net->xfrm.xfrm4_dst_ops.gc_thresh;
-	}
-
-	hdr = register_net_sysctl(net, "net/ipv4", table);
+		hdr = register_net_sysctl(net, "net/ipv4", table);
+	} else
+		hdr = register_net_sysctl(net, "net/ipv4", xfrm4_policy_table);
 	if (!hdr)
 		goto err_reg;
 
@@ -289,8 +288,7 @@ static int __net_init xfrm4_net_init(struct net *net)
 	return 0;
 
 err_reg:
-	if (!net_eq(net, &init_net))
-		kfree(table);
+	kfree(table);
 err_alloc:
 	return -ENOMEM;
 }
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 5667b30..2044f61 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -593,7 +593,7 @@ static int inet6_netconf_dump_devconf(struct sk_buff *skb,
 		idx = 0;
 		head = &net->dev_index_head[h];
 		rcu_read_lock();
-		cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^
+		cb->seq = atomic_read_unchecked(&net->ipv6.dev_addr_genid) ^
 			  net->dev_base_seq;
 		hlist_for_each_entry_rcu(dev, head, index_hlist) {
 			if (idx < s_idx)
@@ -2390,7 +2390,7 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg)
 		p.iph.ihl = 5;
 		p.iph.protocol = IPPROTO_IPV6;
 		p.iph.ttl = 64;
-		ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
+		ifr.ifr_ifru.ifru_data = (void __force_user *)&p;
 
 		if (ops->ndo_do_ioctl) {
 			mm_segment_t oldfs = get_fs();
@@ -3516,16 +3516,23 @@ static const struct file_operations if6_fops = {
 	.release	= seq_release_net,
 };
 
+extern void register_ipv6_seq_ops_addr(struct seq_operations *addr);
+extern void unregister_ipv6_seq_ops_addr(void);
+
 static int __net_init if6_proc_net_init(struct net *net)
 {
-	if (!proc_create("if_inet6", S_IRUGO, net->proc_net, &if6_fops))
+	register_ipv6_seq_ops_addr(&if6_seq_ops);
+	if (!proc_create("if_inet6", S_IRUGO, net->proc_net, &if6_fops)) {
+		unregister_ipv6_seq_ops_addr();
 		return -ENOMEM;
+	}
 	return 0;
 }
 
 static void __net_exit if6_proc_net_exit(struct net *net)
 {
 	remove_proc_entry("if_inet6", net->proc_net);
+	unregister_ipv6_seq_ops_addr();
 }
 
 static struct pernet_operations if6_proc_net_ops = {
@@ -4141,7 +4148,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
 	s_ip_idx = ip_idx = cb->args[2];
 
 	rcu_read_lock();
-	cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
+	cb->seq = atomic_read_unchecked(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
 	for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
 		idx = 0;
 		head = &net->dev_index_head[h];
@@ -4741,11 +4748,8 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 
 			rt = rt6_lookup(dev_net(dev), &ifp->peer_addr, NULL,
 					dev->ifindex, 1);
-			if (rt) {
-				dst_hold(&rt->dst);
-				if (ip6_del_rt(rt))
-					dst_free(&rt->dst);
-			}
+			if (rt && ip6_del_rt(rt))
+				dst_free(&rt->dst);
 		}
 		dst_hold(&ifp->rt->dst);
 
@@ -4753,7 +4757,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
 			dst_free(&ifp->rt->dst);
 		break;
 	}
-	atomic_inc(&net->ipv6.dev_addr_genid);
+	atomic_inc_unchecked(&net->ipv6.dev_addr_genid);
 	rt_genid_bump_ipv6(net);
 }
 
@@ -4774,7 +4778,7 @@ int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
 	int *valp = ctl->data;
 	int val = *valp;
 	loff_t pos = *ppos;
-	struct ctl_table lctl;
+	ctl_table_no_const lctl;
 	int ret;
 
 	/*
@@ -4859,7 +4863,7 @@ int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
 	int *valp = ctl->data;
 	int val = *valp;
 	loff_t pos = *ppos;
-	struct ctl_table lctl;
+	ctl_table_no_const lctl;
 	int ret;
 
 	/*
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 7cb4392..dc96d28 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -765,7 +765,7 @@ static int __net_init inet6_net_init(struct net *net)
 	net->ipv6.sysctl.bindv6only = 0;
 	net->ipv6.sysctl.icmpv6_time = 1*HZ;
 	net->ipv6.sysctl.flowlabel_consistency = 1;
-	atomic_set(&net->ipv6.rt_genid, 0);
+	atomic_set_unchecked(&net->ipv6.rt_genid, 0);
 
 	err = ipv6_init_mibs(net);
 	if (err)
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index c3bf2d2..1f00573 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -938,5 +938,5 @@ void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp,
 		   0,
 		   sock_i_ino(sp),
 		   atomic_read(&sp->sk_refcnt), sp,
-		   atomic_read(&sp->sk_drops));
+		   atomic_read_unchecked(&sp->sk_drops));
 }
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index f6c84a6..9f2084e 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -990,7 +990,7 @@ static struct ctl_table ipv6_icmp_table_template[] = {
 
 struct ctl_table * __net_init ipv6_icmp_sysctl_init(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(ipv6_icmp_table_template,
 			sizeof(ipv6_icmp_table_template),
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 3873181..220ad3f 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -71,8 +71,8 @@ struct ip6gre_net {
 	struct net_device *fb_tunnel_dev;
 };
 
-static struct rtnl_link_ops ip6gre_link_ops __read_mostly;
-static struct rtnl_link_ops ip6gre_tap_ops __read_mostly;
+static struct rtnl_link_ops ip6gre_link_ops;
+static struct rtnl_link_ops ip6gre_tap_ops;
 static int ip6gre_tunnel_init(struct net_device *dev);
 static void ip6gre_tunnel_setup(struct net_device *dev);
 static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t);
@@ -1280,7 +1280,7 @@ static void ip6gre_fb_tunnel_init(struct net_device *dev)
 }
 
 
-static struct inet6_protocol ip6gre_protocol __read_mostly = {
+static struct inet6_protocol ip6gre_protocol = {
 	.handler     = ip6gre_rcv,
 	.err_handler = ip6gre_err,
 	.flags       = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
@@ -1638,7 +1638,7 @@ static const struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = {
 	[IFLA_GRE_FLAGS]       = { .type = NLA_U32 },
 };
 
-static struct rtnl_link_ops ip6gre_link_ops __read_mostly = {
+static struct rtnl_link_ops ip6gre_link_ops = {
 	.kind		= "ip6gre",
 	.maxtype	= IFLA_GRE_MAX,
 	.policy		= ip6gre_policy,
@@ -1652,7 +1652,7 @@ static struct rtnl_link_ops ip6gre_link_ops __read_mostly = {
 	.fill_info	= ip6gre_fill_info,
 };
 
-static struct rtnl_link_ops ip6gre_tap_ops __read_mostly = {
+static struct rtnl_link_ops ip6gre_tap_ops = {
 	.kind		= "ip6gretap",
 	.maxtype	= IFLA_GRE_MAX,
 	.policy		= ip6gre_policy,
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index afa0824..04ba530 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -86,7 +86,7 @@ static u32 HASH(const struct in6_addr *addr1, const struct in6_addr *addr2)
 
 static int ip6_tnl_dev_init(struct net_device *dev);
 static void ip6_tnl_dev_setup(struct net_device *dev);
-static struct rtnl_link_ops ip6_link_ops __read_mostly;
+static struct rtnl_link_ops ip6_link_ops;
 
 static int ip6_tnl_net_id __read_mostly;
 struct ip6_tnl_net {
@@ -1708,7 +1708,7 @@ static const struct nla_policy ip6_tnl_policy[IFLA_IPTUN_MAX + 1] = {
 	[IFLA_IPTUN_PROTO]		= { .type = NLA_U8 },
 };
 
-static struct rtnl_link_ops ip6_link_ops __read_mostly = {
+static struct rtnl_link_ops ip6_link_ops = {
 	.kind		= "ip6tnl",
 	.maxtype	= IFLA_IPTUN_MAX,
 	.policy		= ip6_tnl_policy,
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index 9aaa6bb..5c13e57 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -62,7 +62,7 @@ static u32 HASH(const struct in6_addr *addr1, const struct in6_addr *addr2)
 
 static int vti6_dev_init(struct net_device *dev);
 static void vti6_dev_setup(struct net_device *dev);
-static struct rtnl_link_ops vti6_link_ops __read_mostly;
+static struct rtnl_link_ops vti6_link_ops;
 
 static int vti6_net_id __read_mostly;
 struct vti6_net {
@@ -977,7 +977,7 @@ static const struct nla_policy vti6_policy[IFLA_VTI_MAX + 1] = {
 	[IFLA_VTI_OKEY]		= { .type = NLA_U32 },
 };
 
-static struct rtnl_link_ops vti6_link_ops __read_mostly = {
+static struct rtnl_link_ops vti6_link_ops = {
 	.kind		= "vti6",
 	.maxtype	= IFLA_VTI_MAX,
 	.policy		= vti6_policy,
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index edb58af..78de133 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -991,7 +991,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
 		if (sk->sk_type != SOCK_STREAM)
 			return -ENOPROTOOPT;
 
-		msg.msg_control = optval;
+		msg.msg_control = (void __force_kernel *)optval;
 		msg.msg_controllen = len;
 		msg.msg_flags = flags;
 
diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
index e080fbb..412b3cf 100644
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -1083,14 +1083,14 @@ static int compat_table_info(const struct xt_table_info *info,
 #endif
 
 static int get_info(struct net *net, void __user *user,
-                    const int *len, int compat)
+                    int len, int compat)
 {
 	char name[XT_TABLE_MAXNAMELEN];
 	struct xt_table *t;
 	int ret;
 
-	if (*len != sizeof(struct ip6t_getinfo)) {
-		duprintf("length %u != %zu\n", *len,
+	if (len != sizeof(struct ip6t_getinfo)) {
+		duprintf("length %u != %zu\n", len,
 			 sizeof(struct ip6t_getinfo));
 		return -EINVAL;
 	}
@@ -1127,7 +1127,7 @@ static int get_info(struct net *net, void __user *user,
 		info.size = private->size;
 		strcpy(info.name, name);
 
-		if (copy_to_user(user, &info, *len) != 0)
+		if (copy_to_user(user, &info, len) != 0)
 			ret = -EFAULT;
 		else
 			ret = 0;
@@ -1983,7 +1983,7 @@ compat_do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 
 	switch (cmd) {
 	case IP6T_SO_GET_INFO:
-		ret = get_info(sock_net(sk), user, len, 1);
+		ret = get_info(sock_net(sk), user, *len, 1);
 		break;
 	case IP6T_SO_GET_ENTRIES:
 		ret = compat_get_entries(sock_net(sk), user, len);
@@ -2030,7 +2030,7 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
 
 	switch (cmd) {
 	case IP6T_SO_GET_INFO:
-		ret = get_info(sock_net(sk), user, len, 0);
+		ret = get_info(sock_net(sk), user, *len, 0);
 		break;
 
 	case IP6T_SO_GET_ENTRIES:
diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
index 0d5279f..89d9f6f 100644
--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
@@ -90,12 +90,11 @@ static struct ctl_table nf_ct_frag6_sysctl_table[] = {
 
 static int nf_ct_frag6_sysctl_register(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 	struct ctl_table_header *hdr;
 
-	table = nf_ct_frag6_sysctl_table;
 	if (!net_eq(net, &init_net)) {
-		table = kmemdup(table, sizeof(nf_ct_frag6_sysctl_table),
+		table = kmemdup(nf_ct_frag6_sysctl_table, sizeof(nf_ct_frag6_sysctl_table),
 				GFP_KERNEL);
 		if (table == NULL)
 			goto err_alloc;
@@ -103,9 +102,9 @@ static int nf_ct_frag6_sysctl_register(struct net *net)
 		table[0].data = &net->nf_frag.frags.timeout;
 		table[1].data = &net->nf_frag.frags.low_thresh;
 		table[2].data = &net->nf_frag.frags.high_thresh;
-	}
-
-	hdr = register_net_sysctl(net, "net/netfilter", table);
+		hdr = register_net_sysctl(net, "net/netfilter", table);
+	} else
+		hdr = register_net_sysctl(net, "net/netfilter", nf_ct_frag6_sysctl_table);
 	if (hdr == NULL)
 		goto err_reg;
 
@@ -113,8 +112,7 @@ static int nf_ct_frag6_sysctl_register(struct net *net)
 	return 0;
 
 err_reg:
-	if (!net_eq(net, &init_net))
-		kfree(table);
+	kfree(table);
 err_alloc:
 	return -ENOMEM;
 }
diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
index 5b7a1ed..d9da205 100644
--- a/net/ipv6/ping.c
+++ b/net/ipv6/ping.c
@@ -240,6 +240,24 @@ static struct pernet_operations ping_v6_net_ops = {
 };
 #endif
 
+static struct pingv6_ops real_pingv6_ops = {
+	.ipv6_recv_error		= ipv6_recv_error,
+	.ip6_datagram_recv_common_ctl	= ip6_datagram_recv_common_ctl,
+	.ip6_datagram_recv_specific_ctl	= ip6_datagram_recv_specific_ctl,
+	.icmpv6_err_convert		= icmpv6_err_convert,
+	.ipv6_icmp_error		= ipv6_icmp_error,
+	.ipv6_chk_addr			= ipv6_chk_addr,
+};
+
+static struct pingv6_ops dummy_pingv6_ops = {
+	.ipv6_recv_error		= dummy_ipv6_recv_error,
+	.ip6_datagram_recv_common_ctl	= dummy_ip6_datagram_recv_ctl,
+	.ip6_datagram_recv_specific_ctl	= dummy_ip6_datagram_recv_ctl,
+	.icmpv6_err_convert		= dummy_icmpv6_err_convert,
+	.ipv6_icmp_error		= dummy_ipv6_icmp_error,
+	.ipv6_chk_addr			= dummy_ipv6_chk_addr,
+};
+
 int __init pingv6_init(void)
 {
 #ifdef CONFIG_PROC_FS
@@ -247,13 +265,7 @@ int __init pingv6_init(void)
 	if (ret)
 		return ret;
 #endif
-	pingv6_ops.ipv6_recv_error = ipv6_recv_error;
-	pingv6_ops.ip6_datagram_recv_common_ctl = ip6_datagram_recv_common_ctl;
-	pingv6_ops.ip6_datagram_recv_specific_ctl =
-		ip6_datagram_recv_specific_ctl;
-	pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
-	pingv6_ops.ipv6_icmp_error = ipv6_icmp_error;
-	pingv6_ops.ipv6_chk_addr = ipv6_chk_addr;
+	pingv6_ops = &real_pingv6_ops;
 	return inet6_register_protosw(&pingv6_protosw);
 }
 
@@ -262,14 +274,9 @@ int __init pingv6_init(void)
  */
 void pingv6_exit(void)
 {
-	pingv6_ops.ipv6_recv_error = dummy_ipv6_recv_error;
-	pingv6_ops.ip6_datagram_recv_common_ctl = dummy_ip6_datagram_recv_ctl;
-	pingv6_ops.ip6_datagram_recv_specific_ctl = dummy_ip6_datagram_recv_ctl;
-	pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
-	pingv6_ops.ipv6_icmp_error = dummy_ipv6_icmp_error;
-	pingv6_ops.ipv6_chk_addr = dummy_ipv6_chk_addr;
 #ifdef CONFIG_PROC_FS
 	unregister_pernet_subsys(&ping_v6_net_ops);
 #endif
+	pingv6_ops = &dummy_pingv6_ops;
 	inet6_unregister_protosw(&pingv6_protosw);
 }
diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
index 3317440..201764e 100644
--- a/net/ipv6/proc.c
+++ b/net/ipv6/proc.c
@@ -309,7 +309,7 @@ static int __net_init ipv6_proc_init_net(struct net *net)
 	if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
 		goto proc_snmp6_fail;
 
-	net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
+	net->mib.proc_net_devsnmp6 = proc_mkdir_restrict("dev_snmp6", net->proc_net);
 	if (!net->mib.proc_net_devsnmp6)
 		goto proc_dev_snmp6_fail;
 	return 0;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index b2dc60b..a6b6c10 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -388,7 +388,7 @@ static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb)
 {
 	if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) &&
 	    skb_checksum_complete(skb)) {
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		kfree_skb(skb);
 		return NET_RX_DROP;
 	}
@@ -416,7 +416,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
 	struct raw6_sock *rp = raw6_sk(sk);
 
 	if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
-		atomic_inc(&sk->sk_drops);
+		atomic_inc_unchecked(&sk->sk_drops);
 		kfree_skb(skb);
 		return NET_RX_DROP;
 	}
@@ -440,7 +440,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
 
 	if (inet->hdrincl) {
 		if (skb_checksum_complete(skb)) {
-			atomic_inc(&sk->sk_drops);
+			atomic_inc_unchecked(&sk->sk_drops);
 			kfree_skb(skb);
 			return NET_RX_DROP;
 		}
@@ -610,7 +610,7 @@ out:
 	return err;
 }
 
-static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
+static int rawv6_send_hdrinc(struct sock *sk, void *from, unsigned int length,
 			struct flowi6 *fl6, struct dst_entry **dstp,
 			unsigned int flags)
 {
@@ -916,12 +916,15 @@ do_confirm:
 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
 			       char __user *optval, int optlen)
 {
+	struct icmp6_filter filter;
+
 	switch (optname) {
 	case ICMPV6_FILTER:
 		if (optlen > sizeof(struct icmp6_filter))
 			optlen = sizeof(struct icmp6_filter);
-		if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
+		if (copy_from_user(&filter, optval, optlen))
 			return -EFAULT;
+		raw6_sk(sk)->filter = filter;
 		return 0;
 	default:
 		return -ENOPROTOOPT;
@@ -934,6 +937,7 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
 			       char __user *optval, int __user *optlen)
 {
 	int len;
+	struct icmp6_filter filter;
 
 	switch (optname) {
 	case ICMPV6_FILTER:
@@ -945,7 +949,8 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
 			len = sizeof(struct icmp6_filter);
 		if (put_user(len, optlen))
 			return -EFAULT;
-		if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
+		filter = raw6_sk(sk)->filter;
+		if (len > sizeof filter || copy_to_user(optval, &filter, len))
 			return -EFAULT;
 		return 0;
 	default:
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index cc85a9b..526a133 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -626,12 +626,11 @@ static struct ctl_table ip6_frags_ctl_table[] = {
 
 static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 	struct ctl_table_header *hdr;
 
-	table = ip6_frags_ns_ctl_table;
 	if (!net_eq(net, &init_net)) {
-		table = kmemdup(table, sizeof(ip6_frags_ns_ctl_table), GFP_KERNEL);
+		table = kmemdup(ip6_frags_ns_ctl_table, sizeof(ip6_frags_ns_ctl_table), GFP_KERNEL);
 		if (table == NULL)
 			goto err_alloc;
 
@@ -642,9 +641,10 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
 		/* Don't export sysctls to unprivileged users */
 		if (net->user_ns != &init_user_ns)
 			table[0].procname = NULL;
-	}
+		hdr = register_net_sysctl(net, "net/ipv6", table);
+	} else
+		hdr = register_net_sysctl(net, "net/ipv6", ip6_frags_ns_ctl_table);
 
-	hdr = register_net_sysctl(net, "net/ipv6", table);
 	if (hdr == NULL)
 		goto err_reg;
 
@@ -652,8 +652,7 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
 	return 0;
 
 err_reg:
-	if (!net_eq(net, &init_net))
-		kfree(table);
+	kfree(table);
 err_alloc:
 	return -ENOMEM;
 }
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f23fbd2..7868241 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2971,7 +2971,7 @@ struct ctl_table ipv6_route_table_template[] = {
 
 struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(ipv6_route_table_template,
 			sizeof(ipv6_route_table_template),
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 4f40817..54dcbef 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -74,7 +74,7 @@ static void ipip6_tunnel_setup(struct net_device *dev);
 static void ipip6_dev_free(struct net_device *dev);
 static bool check_6rd(struct ip_tunnel *tunnel, const struct in6_addr *v6dst,
 		      __be32 *v4dst);
-static struct rtnl_link_ops sit_link_ops __read_mostly;
+static struct rtnl_link_ops sit_link_ops;
 
 static int sit_net_id __read_mostly;
 struct sit_net {
@@ -1661,7 +1661,7 @@ static void ipip6_dellink(struct net_device *dev, struct list_head *head)
 		unregister_netdevice_queue(dev, head);
 }
 
-static struct rtnl_link_ops sit_link_ops __read_mostly = {
+static struct rtnl_link_ops sit_link_ops = {
 	.kind		= "sit",
 	.maxtype	= IFLA_IPTUN_MAX,
 	.policy		= ipip6_policy,
diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
index 058f3ec..dec973d 100644
--- a/net/ipv6/sysctl_net_ipv6.c
+++ b/net/ipv6/sysctl_net_ipv6.c
@@ -61,7 +61,7 @@ static struct ctl_table ipv6_rotable[] = {
 
 static int __net_init ipv6_sysctl_net_init(struct net *net)
 {
-	struct ctl_table *ipv6_table;
+	ctl_table_no_const *ipv6_table;
 	struct ctl_table *ipv6_route_table;
 	struct ctl_table *ipv6_icmp_table;
 	int err;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 229239ad..ee2802f 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -102,6 +102,10 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
 		inet6_sk(sk)->rx_dst_cookie = rt->rt6i_node->fn_sernum;
 }
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+extern int grsec_enable_blackhole;
+#endif
+
 static void tcp_v6_hash(struct sock *sk)
 {
 	if (sk->sk_state != TCP_CLOSE) {
@@ -1424,6 +1428,9 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
 	return 0;
 
 reset:
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	if (!grsec_enable_blackhole)
+#endif
 	tcp_v6_send_reset(sk, skb);
 discard:
 	if (opt_skb)
@@ -1508,12 +1515,20 @@ static int tcp_v6_rcv(struct sk_buff *skb)
 	TCP_SKB_CB(skb)->sacked = 0;
 
 	sk = __inet6_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
-	if (!sk)
+	if (!sk) {
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		ret = 1;
+#endif
 		goto no_tcp_socket;
+	}
 
 process:
-	if (sk->sk_state == TCP_TIME_WAIT)
+	if (sk->sk_state == TCP_TIME_WAIT) {
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		ret = 2;
+#endif
 		goto do_time_wait;
+	}
 
 	if (hdr->hop_limit < inet6_sk(sk)->min_hopcount) {
 		NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
@@ -1565,6 +1580,10 @@ csum_error:
 bad_packet:
 		TCP_INC_STATS_BH(net, TCP_MIB_INERRS);
 	} else {
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+		if (!grsec_enable_blackhole || (ret == 1 &&
+		    (skb->dev->flags & IFF_LOOPBACK)))
+#endif
 		tcp_v6_send_reset(NULL, skb);
 	}
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 7092ff7..3fd0eb4 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -76,6 +76,10 @@ static unsigned int udp6_ehashfn(struct net *net,
 			       udp_ipv6_hash_secret + net_hash_mix(net));
 }
 
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+extern int grsec_enable_blackhole;
+#endif
+
 int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
 {
 	const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
@@ -435,7 +439,7 @@ try_again:
 	if (unlikely(err)) {
 		trace_kfree_skb(skb, udpv6_recvmsg);
 		if (!peeked) {
-			atomic_inc(&sk->sk_drops);
+			atomic_inc_unchecked(&sk->sk_drops);
 			if (is_udp4)
 				UDP_INC_STATS_USER(sock_net(sk),
 						   UDP_MIB_INERRORS,
@@ -698,7 +702,7 @@ csum_error:
 	UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
 drop:
 	UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
-	atomic_inc(&sk->sk_drops);
+	atomic_inc_unchecked(&sk->sk_drops);
 	kfree_skb(skb);
 	return -1;
 }
@@ -754,7 +758,7 @@ static void flush_stack(struct sock **stack, unsigned int count,
 		if (likely(skb1 == NULL))
 			skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC);
 		if (!skb1) {
-			atomic_inc(&sk->sk_drops);
+			atomic_inc_unchecked(&sk->sk_drops);
 			UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,
 					  IS_UDPLITE(sk));
 			UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
@@ -920,6 +924,9 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
 		goto csum_error;
 
 	UDP6_INC_STATS_BH(net, UDP_MIB_NOPORTS, proto == IPPROTO_UDPLITE);
+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
+	if (!grsec_enable_blackhole || (skb->dev->flags & IFF_LOOPBACK))
+#endif
 	icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0);
 
 	kfree_skb(skb);
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 2a0bbda..d75ca57 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -212,11 +212,11 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl, int reverse)
 	}
 }
 
-static inline int xfrm6_garbage_collect(struct dst_ops *ops)
+static int xfrm6_garbage_collect(struct dst_ops *ops)
 {
 	struct net *net = container_of(ops, struct net, xfrm.xfrm6_dst_ops);
 
-	xfrm6_policy_afinfo.garbage_collect(net);
+	xfrm_garbage_collect_deferred(net);
 	return dst_entries_get_fast(ops) > ops->gc_thresh * 2;
 }
 
@@ -329,19 +329,19 @@ static struct ctl_table xfrm6_policy_table[] = {
 
 static int __net_init xfrm6_net_init(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table = NULL;
 	struct ctl_table_header *hdr;
 
-	table = xfrm6_policy_table;
 	if (!net_eq(net, &init_net)) {
-		table = kmemdup(table, sizeof(xfrm6_policy_table), GFP_KERNEL);
+		table = kmemdup(xfrm6_policy_table, sizeof(xfrm6_policy_table), GFP_KERNEL);
 		if (!table)
 			goto err_alloc;
 
 		table[0].data = &net->xfrm.xfrm6_dst_ops.gc_thresh;
-	}
+		hdr = register_net_sysctl(net, "net/ipv6", table);
+	} else
+		hdr = register_net_sysctl(net, "net/ipv6", xfrm6_policy_table);
 
-	hdr = register_net_sysctl(net, "net/ipv6", table);
 	if (!hdr)
 		goto err_reg;
 
@@ -349,8 +349,7 @@ static int __net_init xfrm6_net_init(struct net *net)
 	return 0;
 
 err_reg:
-	if (!net_eq(net, &init_net))
-		kfree(table);
+	kfree(table);
 err_alloc:
 	return -ENOMEM;
 }
diff --git a/net/ipx/ipx_proc.c b/net/ipx/ipx_proc.c
index e15c16a..7cf07aa 100644
--- a/net/ipx/ipx_proc.c
+++ b/net/ipx/ipx_proc.c
@@ -289,7 +289,7 @@ int __init ipx_proc_init(void)
 	struct proc_dir_entry *p;
 	int rc = -ENOMEM;
 
-	ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
+	ipx_proc_dir = proc_mkdir_restrict("ipx", init_net.proc_net);
 
 	if (!ipx_proc_dir)
 		goto out;
diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
index 2ba8b97..6d33010 100644
--- a/net/irda/ircomm/ircomm_tty.c
+++ b/net/irda/ircomm/ircomm_tty.c
@@ -317,11 +317,11 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
 	add_wait_queue(&port->open_wait, &wait);
 
 	IRDA_DEBUG(2, "%s(%d):block_til_ready before block on %s open_count=%d\n",
-	      __FILE__, __LINE__, tty->driver->name, port->count);
+	      __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
 
 	spin_lock_irqsave(&port->lock, flags);
 	if (!tty_hung_up_p(filp))
-		port->count--;
+		atomic_dec(&port->count);
 	port->blocked_open++;
 	spin_unlock_irqrestore(&port->lock, flags);
 
@@ -356,7 +356,7 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
 		}
 
 		IRDA_DEBUG(1, "%s(%d):block_til_ready blocking on %s open_count=%d\n",
-		      __FILE__, __LINE__, tty->driver->name, port->count);
+		      __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
 
 		schedule();
 	}
@@ -366,12 +366,12 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
 
 	spin_lock_irqsave(&port->lock, flags);
 	if (!tty_hung_up_p(filp))
-		port->count++;
+		atomic_inc(&port->count);
 	port->blocked_open--;
 	spin_unlock_irqrestore(&port->lock, flags);
 
 	IRDA_DEBUG(1, "%s(%d):block_til_ready after blocking on %s open_count=%d\n",
-	      __FILE__, __LINE__, tty->driver->name, port->count);
+	      __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
 
 	if (!retval)
 		port->flags |= ASYNC_NORMAL_ACTIVE;
@@ -445,12 +445,12 @@ static int ircomm_tty_open(struct tty_struct *tty, struct file *filp)
 
 	/* ++ is not atomic, so this should be protected - Jean II */
 	spin_lock_irqsave(&self->port.lock, flags);
-	self->port.count++;
+	atomic_inc(&self->port.count);
 	spin_unlock_irqrestore(&self->port.lock, flags);
 	tty_port_tty_set(&self->port, tty);
 
 	IRDA_DEBUG(1, "%s(), %s%d, count = %d\n", __func__ , tty->driver->name,
-		   self->line, self->port.count);
+		   self->line, atomic_read(&self->port.count));
 
 	/* Not really used by us, but lets do it anyway */
 	self->port.low_latency = (self->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
@@ -987,7 +987,7 @@ static void ircomm_tty_hangup(struct tty_struct *tty)
 		tty_kref_put(port->tty);
 	}
 	port->tty = NULL;
-	port->count = 0;
+	atomic_set(&port->count, 0);
 	spin_unlock_irqrestore(&port->lock, flags);
 
 	wake_up_interruptible(&port->open_wait);
@@ -1344,7 +1344,7 @@ static void ircomm_tty_line_info(struct ircomm_tty_cb *self, struct seq_file *m)
 	seq_putc(m, '\n');
 
 	seq_printf(m, "Role: %s\n", self->client ? "client" : "server");
-	seq_printf(m, "Open count: %d\n", self->port.count);
+	seq_printf(m, "Open count: %d\n", atomic_read(&self->port.count));
 	seq_printf(m, "Max data size: %d\n", self->max_data_size);
 	seq_printf(m, "Max header size: %d\n", self->max_header_size);
 
diff --git a/net/irda/irproc.c b/net/irda/irproc.c
index b9ac598..f88cc56 100644
--- a/net/irda/irproc.c
+++ b/net/irda/irproc.c
@@ -66,7 +66,7 @@ void __init irda_proc_register(void)
 {
 	int i;
 
-	proc_irda = proc_mkdir("irda", init_net.proc_net);
+	proc_irda = proc_mkdir_restrict("irda", init_net.proc_net);
 	if (proc_irda == NULL)
 		return;
 
diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
index 7a95fa4..57be196 100644
--- a/net/iucv/af_iucv.c
+++ b/net/iucv/af_iucv.c
@@ -686,10 +686,10 @@ static void __iucv_auto_name(struct iucv_sock *iucv)
 {
 	char name[12];
 
-	sprintf(name, "%08x", atomic_inc_return(&iucv_sk_list.autobind_name));
+	sprintf(name, "%08x", atomic_inc_return_unchecked(&iucv_sk_list.autobind_name));
 	while (__iucv_get_sock_by_name(name)) {
 		sprintf(name, "%08x",
-			atomic_inc_return(&iucv_sk_list.autobind_name));
+			atomic_inc_return_unchecked(&iucv_sk_list.autobind_name));
 	}
 	memcpy(iucv->src_name, name, 8);
 }
diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
index da78793..bdd78cf 100644
--- a/net/iucv/iucv.c
+++ b/net/iucv/iucv.c
@@ -702,7 +702,7 @@ static int iucv_cpu_notify(struct notifier_block *self,
 	return NOTIFY_OK;
 }
 
-static struct notifier_block __refdata iucv_cpu_notifier = {
+static struct notifier_block iucv_cpu_notifier = {
 	.notifier_call = iucv_cpu_notify,
 };
 
diff --git a/net/key/af_key.c b/net/key/af_key.c
index ba2a2f9..b658bc3 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -3052,10 +3052,10 @@ static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, const struc
 static u32 get_acqseq(void)
 {
 	u32 res;
-	static atomic_t acqseq;
+	static atomic_unchecked_t acqseq;
 
 	do {
-		res = atomic_inc_return(&acqseq);
+		res = atomic_inc_return_unchecked(&acqseq);
 	} while (!res);
 	return res;
 }
diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
index 76125c5..e474828 100644
--- a/net/l2tp/l2tp_eth.c
+++ b/net/l2tp/l2tp_eth.c
@@ -42,12 +42,12 @@ struct l2tp_eth {
 	struct sock		*tunnel_sock;
 	struct l2tp_session	*session;
 	struct list_head	list;
-	atomic_long_t		tx_bytes;
-	atomic_long_t		tx_packets;
-	atomic_long_t		tx_dropped;
-	atomic_long_t		rx_bytes;
-	atomic_long_t		rx_packets;
-	atomic_long_t		rx_errors;
+	atomic_long_unchecked_t	tx_bytes;
+	atomic_long_unchecked_t	tx_packets;
+	atomic_long_unchecked_t	tx_dropped;
+	atomic_long_unchecked_t	rx_bytes;
+	atomic_long_unchecked_t	rx_packets;
+	atomic_long_unchecked_t	rx_errors;
 };
 
 /* via l2tp_session_priv() */
@@ -98,10 +98,10 @@ static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 	int ret = l2tp_xmit_skb(session, skb, session->hdr_len);
 
 	if (likely(ret == NET_XMIT_SUCCESS)) {
-		atomic_long_add(len, &priv->tx_bytes);
-		atomic_long_inc(&priv->tx_packets);
+		atomic_long_add_unchecked(len, &priv->tx_bytes);
+		atomic_long_inc_unchecked(&priv->tx_packets);
 	} else {
-		atomic_long_inc(&priv->tx_dropped);
+		atomic_long_inc_unchecked(&priv->tx_dropped);
 	}
 	return NETDEV_TX_OK;
 }
@@ -111,12 +111,12 @@ static struct rtnl_link_stats64 *l2tp_eth_get_stats64(struct net_device *dev,
 {
 	struct l2tp_eth *priv = netdev_priv(dev);
 
-	stats->tx_bytes   = atomic_long_read(&priv->tx_bytes);
-	stats->tx_packets = atomic_long_read(&priv->tx_packets);
-	stats->tx_dropped = atomic_long_read(&priv->tx_dropped);
-	stats->rx_bytes   = atomic_long_read(&priv->rx_bytes);
-	stats->rx_packets = atomic_long_read(&priv->rx_packets);
-	stats->rx_errors  = atomic_long_read(&priv->rx_errors);
+	stats->tx_bytes   = atomic_long_read_unchecked(&priv->tx_bytes);
+	stats->tx_packets = atomic_long_read_unchecked(&priv->tx_packets);
+	stats->tx_dropped = atomic_long_read_unchecked(&priv->tx_dropped);
+	stats->rx_bytes   = atomic_long_read_unchecked(&priv->rx_bytes);
+	stats->rx_packets = atomic_long_read_unchecked(&priv->rx_packets);
+	stats->rx_errors  = atomic_long_read_unchecked(&priv->rx_errors);
 	return stats;
 }
 
@@ -166,15 +166,15 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
 	nf_reset(skb);
 
 	if (dev_forward_skb(dev, skb) == NET_RX_SUCCESS) {
-		atomic_long_inc(&priv->rx_packets);
-		atomic_long_add(data_len, &priv->rx_bytes);
+		atomic_long_inc_unchecked(&priv->rx_packets);
+		atomic_long_add_unchecked(data_len, &priv->rx_bytes);
 	} else {
-		atomic_long_inc(&priv->rx_errors);
+		atomic_long_inc_unchecked(&priv->rx_errors);
 	}
 	return;
 
 error:
-	atomic_long_inc(&priv->rx_errors);
+	atomic_long_inc_unchecked(&priv->rx_errors);
 	kfree_skb(skb);
 }
 
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 13752d9..b704a93 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -755,7 +755,8 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
 	/* If PMTU discovery was enabled, use the MTU that was discovered */
 	dst = sk_dst_get(tunnel->sock);
 	if (dst != NULL) {
-		u32 pmtu = dst_mtu(__sk_dst_get(tunnel->sock));
+		u32 pmtu = dst_mtu(dst);
+
 		if (pmtu != 0)
 			session->mtu = session->mru = pmtu -
 				PPPOL2TP_HEADER_OVERHEAD;
diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
index 1a3c7e0..80f8b0c 100644
--- a/net/llc/llc_proc.c
+++ b/net/llc/llc_proc.c
@@ -247,7 +247,7 @@ int __init llc_proc_init(void)
 	int rc = -ENOMEM;
 	struct proc_dir_entry *p;
 
-	llc_proc_dir = proc_mkdir("llc", init_net.proc_net);
+	llc_proc_dir = proc_mkdir_restrict("llc", init_net.proc_net);
 	if (!llc_proc_dir)
 		goto out;
 
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 592f4b1..efa7aa9 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -864,7 +864,7 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 			ret = ieee80211_vif_use_channel(sdata, chandef,
 					IEEE80211_CHANCTX_EXCLUSIVE);
 		}
-	} else if (local->open_count == local->monitors) {
+	} else if (local_read(&local->open_count) == local->monitors) {
 		local->_oper_chandef = *chandef;
 		ieee80211_hw_config(local, 0);
 	}
@@ -3574,7 +3574,7 @@ static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
 		else
 			local->probe_req_reg--;
 
-		if (!local->open_count)
+		if (!local_read(&local->open_count))
 			break;
 
 		ieee80211_queue_work(&local->hw, &local->reconfig_filter);
@@ -3723,8 +3723,8 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
 	if (chanctx_conf) {
 		*chandef = chanctx_conf->def;
 		ret = 0;
-	} else if (local->open_count > 0 &&
-		   local->open_count == local->monitors &&
+	} else if (local_read(&local->open_count) > 0 &&
+		   local_read(&local->open_count) == local->monitors &&
 		   sdata->vif.type == NL80211_IFTYPE_MONITOR) {
 		if (local->use_chanctx)
 			*chandef = local->monitor_chandef;
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index ac9836e..32613c1 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -28,6 +28,7 @@
 #include <net/ieee80211_radiotap.h>
 #include <net/cfg80211.h>
 #include <net/mac80211.h>
+#include <asm/local.h>
 #include "key.h"
 #include "sta_info.h"
 #include "debug.h"
@@ -1011,7 +1012,7 @@ struct ieee80211_local {
 	/* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
 	spinlock_t queue_stop_reason_lock;
 
-	int open_count;
+	local_t open_count;
 	int monitors, cooked_mntrs;
 	/* number of interfaces with corresponding FIF_ flags */
 	int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 388b863..6575b55 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -531,7 +531,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 		break;
 	}
 
-	if (local->open_count == 0) {
+	if (local_read(&local->open_count) == 0) {
 		res = drv_start(local);
 		if (res)
 			goto err_del_bss;
@@ -578,7 +578,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 			res = drv_add_interface(local, sdata);
 			if (res)
 				goto err_stop;
-		} else if (local->monitors == 0 && local->open_count == 0) {
+		} else if (local->monitors == 0 && local_read(&local->open_count) == 0) {
 			res = ieee80211_add_virtual_monitor(local);
 			if (res)
 				goto err_stop;
@@ -687,7 +687,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
 		atomic_inc(&local->iff_promiscs);
 
 	if (coming_up)
-		local->open_count++;
+		local_inc(&local->open_count);
 
 	if (hw_reconf_flags)
 		ieee80211_hw_config(local, hw_reconf_flags);
@@ -725,7 +725,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
  err_del_interface:
 	drv_remove_interface(local, sdata);
  err_stop:
-	if (!local->open_count)
+	if (!local_read(&local->open_count))
 		drv_stop(local);
  err_del_bss:
 	sdata->bss = NULL;
@@ -888,7 +888,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	}
 
 	if (going_down)
-		local->open_count--;
+		local_dec(&local->open_count);
 
 	switch (sdata->vif.type) {
 	case NL80211_IFTYPE_AP_VLAN:
@@ -949,7 +949,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	}
 	spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 
-	if (local->open_count == 0)
+	if (local_read(&local->open_count) == 0)
 		ieee80211_clear_tx_pending(local);
 
 	/*
@@ -989,7 +989,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_recalc_ps(local, -1);
 
-	if (local->open_count == 0) {
+	if (local_read(&local->open_count) == 0) {
 		ieee80211_stop_device(local);
 
 		/* no reconfiguring after stop! */
@@ -1000,7 +1000,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
 	ieee80211_configure_filter(local);
 	ieee80211_hw_config(local, hw_reconf_flags);
 
-	if (local->monitors == local->open_count)
+	if (local->monitors == local_read(&local->open_count))
 		ieee80211_add_virtual_monitor(local);
 }
 
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index d17c26d..43d6bfb 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -174,7 +174,7 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
 		changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
 			     IEEE80211_CONF_CHANGE_POWER);
 
-	if (changed && local->open_count) {
+	if (changed && local_read(&local->open_count)) {
 		ret = drv_config(local, changed);
 		/*
 		 * Goal:
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index d478b88..8c8d157 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -12,7 +12,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 	struct ieee80211_sub_if_data *sdata;
 	struct sta_info *sta;
 
-	if (!local->open_count)
+	if (!local_read(&local->open_count))
 		goto suspend;
 
 	ieee80211_scan_cancel(local);
@@ -58,7 +58,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 	cancel_work_sync(&local->dynamic_ps_enable_work);
 	del_timer_sync(&local->dynamic_ps_timer);
 
-	local->wowlan = wowlan && local->open_count;
+	local->wowlan = wowlan && local_read(&local->open_count);
 	if (local->wowlan) {
 		int err = drv_suspend(local, wowlan);
 		if (err < 0) {
@@ -123,7 +123,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
 	WARN_ON(!list_empty(&local->chanctx_list));
 
 	/* stop hardware - this must stop RX */
-	if (local->open_count)
+	if (local_read(&local->open_count))
 		ieee80211_stop_device(local);
 
  suspend:
diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 8fdadfd..a4f72b8 100644
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -720,7 +720,7 @@ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
 
 	ASSERT_RTNL();
 
-	if (local->open_count)
+	if (local_read(&local->open_count))
 		return -EBUSY;
 
 	if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c
index 6ff1346..936ca9a 100644
--- a/net/mac80211/rc80211_pid_debugfs.c
+++ b/net/mac80211/rc80211_pid_debugfs.c
@@ -193,7 +193,7 @@ static ssize_t rate_control_pid_events_read(struct file *file, char __user *buf,
 
 	spin_unlock_irqrestore(&events->lock, status);
 
-	if (copy_to_user(buf, pb, p))
+	if (p > sizeof(pb) || copy_to_user(buf, pb, p))
 		return -EFAULT;
 
 	return p;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index a6cda52..f3b6776 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -1548,7 +1548,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	}
 #endif
 	/* everything else happens only if HW was up & running */
-	if (!local->open_count)
+	if (!local_read(&local->open_count))
 		goto wake_up;
 
 	/*
@@ -1772,7 +1772,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
 	local->in_reconfig = false;
 	barrier();
 
-	if (local->monitors == local->open_count && local->monitors > 0)
+	if (local->monitors == local_read(&local->open_count) && local->monitors > 0)
 		ieee80211_add_virtual_monitor(local);
 
 	/*
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index e9410d1..77b6378 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -1081,6 +1081,16 @@ config NETFILTER_XT_MATCH_ESP
 
 	  To compile it as a module, choose M here.  If unsure, say N.
 
+config NETFILTER_XT_MATCH_GRADM
+	tristate '"gradm" match support'
+	depends on NETFILTER_XTABLES && NETFILTER_ADVANCED
+	depends on GRKERNSEC && !GRKERNSEC_NO_RBAC
+	---help---
+	  The gradm match allows to match on grsecurity RBAC being enabled.
+	  It is useful when iptables rules are applied early on bootup to
+	  prevent connections to the machine (except from a trusted host)
+	  while the RBAC system is disabled.
+
 config NETFILTER_XT_MATCH_HASHLIMIT
 	tristate '"hashlimit" match support'
 	depends on (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n)
diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
index bffdad7..f9317d1 100644
--- a/net/netfilter/Makefile
+++ b/net/netfilter/Makefile
@@ -133,6 +133,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_DEVGROUP) += xt_devgroup.o
 obj-$(CONFIG_NETFILTER_XT_MATCH_DSCP) += xt_dscp.o
 obj-$(CONFIG_NETFILTER_XT_MATCH_ECN) += xt_ecn.o
 obj-$(CONFIG_NETFILTER_XT_MATCH_ESP) += xt_esp.o
+obj-$(CONFIG_NETFILTER_XT_MATCH_GRADM) += xt_gradm.o
 obj-$(CONFIG_NETFILTER_XT_MATCH_HASHLIMIT) += xt_hashlimit.o
 obj-$(CONFIG_NETFILTER_XT_MATCH_HELPER) += xt_helper.o
 obj-$(CONFIG_NETFILTER_XT_MATCH_HL) += xt_hl.o
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index ec8114f..6b2bfba 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -1921,7 +1921,7 @@ done:
 	return ret;
 }
 
-static struct nf_sockopt_ops so_set __read_mostly = {
+static struct nf_sockopt_ops so_set = {
 	.pf		= PF_INET,
 	.get_optmin	= SO_IP_SET,
 	.get_optmax	= SO_IP_SET + 1,
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 610e19c..08d0c3f 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -556,7 +556,7 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
 	/* Increase the refcnt counter of the dest */
 	ip_vs_dest_hold(dest);
 
-	conn_flags = atomic_read(&dest->conn_flags);
+	conn_flags = atomic_read_unchecked(&dest->conn_flags);
 	if (cp->protocol != IPPROTO_UDP)
 		conn_flags &= ~IP_VS_CONN_F_ONE_PACKET;
 	flags = cp->flags;
@@ -899,7 +899,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p,
 
 	cp->control = NULL;
 	atomic_set(&cp->n_control, 0);
-	atomic_set(&cp->in_pkts, 0);
+	atomic_set_unchecked(&cp->in_pkts, 0);
 
 	cp->packet_xmit = NULL;
 	cp->app = NULL;
@@ -1187,7 +1187,7 @@ static inline int todrop_entry(struct ip_vs_conn *cp)
 
 	/* Don't drop the entry if its number of incoming packets is not
 	   located in [0, 8] */
-	i = atomic_read(&cp->in_pkts);
+	i = atomic_read_unchecked(&cp->in_pkts);
 	if (i > 8 || i < 0) return 0;
 
 	if (!todrop_rate[i]) return 0;
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index e683675..67cb16b 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -567,7 +567,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
 		ret = cp->packet_xmit(skb, cp, pd->pp, iph);
 		/* do not touch skb anymore */
 
-		atomic_inc(&cp->in_pkts);
+		atomic_inc_unchecked(&cp->in_pkts);
 		ip_vs_conn_put(cp);
 		return ret;
 	}
@@ -1711,7 +1711,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
 	if (cp->flags & IP_VS_CONN_F_ONE_PACKET)
 		pkts = sysctl_sync_threshold(ipvs);
 	else
-		pkts = atomic_add_return(1, &cp->in_pkts);
+		pkts = atomic_add_return_unchecked(1, &cp->in_pkts);
 
 	if (ipvs->sync_state & IP_VS_STATE_MASTER)
 		ip_vs_sync_conn(net, cp, pkts);
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 581a658..910e112 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -794,7 +794,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
 		 */
 		ip_vs_rs_hash(ipvs, dest);
 	}
-	atomic_set(&dest->conn_flags, conn_flags);
+	atomic_set_unchecked(&dest->conn_flags, conn_flags);
 
 	/* bind the service */
 	old_svc = rcu_dereference_protected(dest->svc, 1);
@@ -1654,7 +1654,7 @@ proc_do_sync_ports(struct ctl_table *table, int write,
  *	align with netns init in ip_vs_control_net_init()
  */
 
-static struct ctl_table vs_vars[] = {
+static ctl_table_no_const vs_vars[] __read_only = {
 	{
 		.procname	= "amemthresh",
 		.maxlen		= sizeof(int),
@@ -2075,7 +2075,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
 					   "      %-7s %-6d %-10d %-10d\n",
 					   &dest->addr.in6,
 					   ntohs(dest->port),
-					   ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
+					   ip_vs_fwd_name(atomic_read_unchecked(&dest->conn_flags)),
 					   atomic_read(&dest->weight),
 					   atomic_read(&dest->activeconns),
 					   atomic_read(&dest->inactconns));
@@ -2086,7 +2086,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
 					   "%-7s %-6d %-10d %-10d\n",
 					   ntohl(dest->addr.ip),
 					   ntohs(dest->port),
-					   ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
+					   ip_vs_fwd_name(atomic_read_unchecked(&dest->conn_flags)),
 					   atomic_read(&dest->weight),
 					   atomic_read(&dest->activeconns),
 					   atomic_read(&dest->inactconns));
@@ -2564,7 +2564,7 @@ __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get,
 
 			entry.addr = dest->addr.ip;
 			entry.port = dest->port;
-			entry.conn_flags = atomic_read(&dest->conn_flags);
+			entry.conn_flags = atomic_read_unchecked(&dest->conn_flags);
 			entry.weight = atomic_read(&dest->weight);
 			entry.u_threshold = dest->u_threshold;
 			entry.l_threshold = dest->l_threshold;
@@ -3107,7 +3107,7 @@ static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest)
 	if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) ||
 	    nla_put_be16(skb, IPVS_DEST_ATTR_PORT, dest->port) ||
 	    nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD,
-			(atomic_read(&dest->conn_flags) &
+			(atomic_read_unchecked(&dest->conn_flags) &
 			 IP_VS_CONN_F_FWD_MASK)) ||
 	    nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT,
 			atomic_read(&dest->weight)) ||
@@ -3697,7 +3697,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct net *net)
 {
 	int idx;
 	struct netns_ipvs *ipvs = net_ipvs(net);
-	struct ctl_table *tbl;
+	ctl_table_no_const *tbl;
 
 	atomic_set(&ipvs->dropentry, 0);
 	spin_lock_init(&ipvs->dropentry_lock);
diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
index 547ff33..c8c8117 100644
--- a/net/netfilter/ipvs/ip_vs_lblc.c
+++ b/net/netfilter/ipvs/ip_vs_lblc.c
@@ -118,7 +118,7 @@ struct ip_vs_lblc_table {
  *      IPVS LBLC sysctl table
  */
 #ifdef CONFIG_SYSCTL
-static struct ctl_table vs_vars_table[] = {
+static ctl_table_no_const vs_vars_table[] __read_only = {
 	{
 		.procname	= "lblc_expiration",
 		.data		= NULL,
diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
index 3f21a2f..a112e85 100644
--- a/net/netfilter/ipvs/ip_vs_lblcr.c
+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
@@ -289,7 +289,7 @@ struct ip_vs_lblcr_table {
  *      IPVS LBLCR sysctl table
  */
 
-static struct ctl_table vs_vars_table[] = {
+static ctl_table_no_const vs_vars_table[] __read_only = {
 	{
 		.procname	= "lblcr_expiration",
 		.data		= NULL,
diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
index db80126..ef7110e 100644
--- a/net/netfilter/ipvs/ip_vs_sync.c
+++ b/net/netfilter/ipvs/ip_vs_sync.c
@@ -609,7 +609,7 @@ static void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp,
 	cp = cp->control;
 	if (cp) {
 		if (cp->flags & IP_VS_CONN_F_TEMPLATE)
-			pkts = atomic_add_return(1, &cp->in_pkts);
+			pkts = atomic_add_return_unchecked(1, &cp->in_pkts);
 		else
 			pkts = sysctl_sync_threshold(ipvs);
 		ip_vs_sync_conn(net, cp->control, pkts);
@@ -771,7 +771,7 @@ control:
 	if (!cp)
 		return;
 	if (cp->flags & IP_VS_CONN_F_TEMPLATE)
-		pkts = atomic_add_return(1, &cp->in_pkts);
+		pkts = atomic_add_return_unchecked(1, &cp->in_pkts);
 	else
 		pkts = sysctl_sync_threshold(ipvs);
 	goto sloop;
@@ -895,7 +895,7 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
 
 	if (opt)
 		memcpy(&cp->in_seq, opt, sizeof(*opt));
-	atomic_set(&cp->in_pkts, sysctl_sync_threshold(ipvs));
+	atomic_set_unchecked(&cp->in_pkts, sysctl_sync_threshold(ipvs));
 	cp->state = state;
 	cp->old_state = cp->state;
 	/*
diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
index 73ba1cc..1adfc7a 100644
--- a/net/netfilter/ipvs/ip_vs_xmit.c
+++ b/net/netfilter/ipvs/ip_vs_xmit.c
@@ -1102,7 +1102,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 		else
 			rc = NF_ACCEPT;
 		/* do not touch skb anymore */
-		atomic_inc(&cp->in_pkts);
+		atomic_inc_unchecked(&cp->in_pkts);
 		goto out;
 	}
 
@@ -1194,7 +1194,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
 		else
 			rc = NF_ACCEPT;
 		/* do not touch skb anymore */
-		atomic_inc(&cp->in_pkts);
+		atomic_inc_unchecked(&cp->in_pkts);
 		goto out;
 	}
 
diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c
index a4b5e2a..13b1de3 100644
--- a/net/netfilter/nf_conntrack_acct.c
+++ b/net/netfilter/nf_conntrack_acct.c
@@ -62,7 +62,7 @@ static struct nf_ct_ext_type acct_extend __read_mostly = {
 #ifdef CONFIG_SYSCTL
 static int nf_conntrack_acct_init_sysctl(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(acct_sysctl_table, sizeof(acct_sysctl_table),
 			GFP_KERNEL);
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 1f4f954..e364ad7 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -1789,6 +1789,10 @@ void nf_conntrack_init_end(void)
 #define DYING_NULLS_VAL		((1<<30)+1)
 #define TEMPLATE_NULLS_VAL	((1<<30)+2)
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+static atomic_unchecked_t conntrack_cache_id = ATOMIC_INIT(0);
+#endif
+
 int nf_conntrack_init_net(struct net *net)
 {
 	int ret = -ENOMEM;
@@ -1814,7 +1818,11 @@ int nf_conntrack_init_net(struct net *net)
 	if (!net->ct.stat)
 		goto err_pcpu_lists;
 
+#ifdef CONFIG_GRKERNSEC_HIDESYM
+	net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%08x", atomic_inc_return_unchecked(&conntrack_cache_id));
+#else
 	net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%p", net);
+#endif
 	if (!net->ct.slabname)
 		goto err_slabname;
 
diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c
index 1df1761..ce8b88a 100644
--- a/net/netfilter/nf_conntrack_ecache.c
+++ b/net/netfilter/nf_conntrack_ecache.c
@@ -188,7 +188,7 @@ static struct nf_ct_ext_type event_extend __read_mostly = {
 #ifdef CONFIG_SYSCTL
 static int nf_conntrack_event_init_sysctl(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(event_sysctl_table, sizeof(event_sysctl_table),
 			GFP_KERNEL);
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 5b3eae7..dd4b8fe 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -57,7 +57,7 @@ static struct ctl_table helper_sysctl_table[] = {
 
 static int nf_conntrack_helper_init_sysctl(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(helper_sysctl_table, sizeof(helper_sysctl_table),
 			GFP_KERNEL);
diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
index b65d586..beec902 100644
--- a/net/netfilter/nf_conntrack_proto.c
+++ b/net/netfilter/nf_conntrack_proto.c
@@ -52,7 +52,7 @@ nf_ct_register_sysctl(struct net *net,
 
 static void
 nf_ct_unregister_sysctl(struct ctl_table_header **header,
-			struct ctl_table **table,
+			ctl_table_no_const **table,
 			unsigned int users)
 {
 	if (users > 0)
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index f641751..d3c5b51 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -471,7 +471,7 @@ static struct ctl_table nf_ct_netfilter_table[] = {
 
 static int nf_conntrack_standalone_init_sysctl(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
 			GFP_KERNEL);
diff --git a/net/netfilter/nf_conntrack_timestamp.c b/net/netfilter/nf_conntrack_timestamp.c
index 7a394df..bd91a8a 100644
--- a/net/netfilter/nf_conntrack_timestamp.c
+++ b/net/netfilter/nf_conntrack_timestamp.c
@@ -42,7 +42,7 @@ static struct nf_ct_ext_type tstamp_extend __read_mostly = {
 #ifdef CONFIG_SYSCTL
 static int nf_conntrack_tstamp_init_sysctl(struct net *net)
 {
-	struct ctl_table *table;
+	ctl_table_no_const *table;
 
 	table = kmemdup(tstamp_sysctl_table, sizeof(tstamp_sysctl_table),
 			GFP_KERNEL);
diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
index 85296d4..8becdec 100644
--- a/net/netfilter/nf_log.c
+++ b/net/netfilter/nf_log.c
@@ -243,7 +243,7 @@ static const struct file_operations nflog_file_ops = {
 
 #ifdef CONFIG_SYSCTL
 static char nf_log_sysctl_fnames[NFPROTO_NUMPROTO-NFPROTO_UNSPEC][3];
-static struct ctl_table nf_log_sysctl_table[NFPROTO_NUMPROTO+1];
+static ctl_table_no_const nf_log_sysctl_table[NFPROTO_NUMPROTO+1] __read_only;
 
 static int nf_log_proc_dostring(struct ctl_table *table, int write,
 			 void __user *buffer, size_t *lenp, loff_t *ppos)
@@ -274,14 +274,16 @@ static int nf_log_proc_dostring(struct ctl_table *table, int write,
 		rcu_assign_pointer(net->nf.nf_loggers[tindex], logger);
 		mutex_unlock(&nf_log_mutex);
 	} else {
+		ctl_table_no_const nf_log_table = *table;
+
 		mutex_lock(&nf_log_mutex);
 		logger = rcu_dereference_protected(net->nf.nf_loggers[tindex],
 						   lockdep_is_held(&nf_log_mutex));
 		if (!logger)
-			table->data = "NONE";
+			nf_log_table.data = "NONE";
 		else
-			table->data = logger->name;
-		r = proc_dostring(table, write, buffer, lenp, ppos);
+			nf_log_table.data = logger->name;
+		r = proc_dostring(&nf_log_table, write, buffer, lenp, ppos);
 		mutex_unlock(&nf_log_mutex);
 	}
 
diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
index f042ae5..30ea486 100644
--- a/net/netfilter/nf_sockopt.c
+++ b/net/netfilter/nf_sockopt.c
@@ -45,7 +45,7 @@ int nf_register_sockopt(struct nf_sockopt_ops *reg)
 		}
 	}
 
-	list_add(&reg->list, &nf_sockopts);
+	pax_list_add((struct list_head *)&reg->list, &nf_sockopts);
 out:
 	mutex_unlock(&nf_sockopt_mutex);
 	return ret;
@@ -55,7 +55,7 @@ EXPORT_SYMBOL(nf_register_sockopt);
 void nf_unregister_sockopt(struct nf_sockopt_ops *reg)
 {
 	mutex_lock(&nf_sockopt_mutex);
-	list_del(&reg->list);
+	pax_list_del((struct list_head *)&reg->list);
 	mutex_unlock(&nf_sockopt_mutex);
 }
 EXPORT_SYMBOL(nf_unregister_sockopt);
diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
index d292c8d..9f1e166 100644
--- a/net/netfilter/nfnetlink_log.c
+++ b/net/netfilter/nfnetlink_log.c
@@ -79,7 +79,7 @@ static int nfnl_log_net_id __read_mostly;
 struct nfnl_log_net {
 	spinlock_t instances_lock;
 	struct hlist_head instance_table[INSTANCE_BUCKETS];
-	atomic_t global_seq;
+	atomic_unchecked_t global_seq;
 };
 
 static struct nfnl_log_net *nfnl_log_pernet(struct net *net)
@@ -561,7 +561,7 @@ __build_packet_message(struct nfnl_log_net *log,
 	/* global sequence number */
 	if ((inst->flags & NFULNL_CFG_F_SEQ_GLOBAL) &&
 	    nla_put_be32(inst->skb, NFULA_SEQ_GLOBAL,
-			 htonl(atomic_inc_return(&log->global_seq))))
+			 htonl(atomic_inc_return_unchecked(&log->global_seq))))
 		goto nla_put_failure;
 
 	if (data_len) {
diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c
index 1840989..6895744 100644
--- a/net/netfilter/nft_compat.c
+++ b/net/netfilter/nft_compat.c
@@ -225,7 +225,7 @@ target_dump_info(struct sk_buff *skb, const struct xt_target *t, const void *in)
 		/* We want to reuse existing compat_to_user */
 		old_fs = get_fs();
 		set_fs(KERNEL_DS);
-		t->compat_to_user(out, in);
+		t->compat_to_user((void __force_user *)out, in);
 		set_fs(old_fs);
 		ret = nla_put(skb, NFTA_TARGET_INFO, XT_ALIGN(t->targetsize), out);
 		kfree(out);
@@ -421,7 +421,7 @@ match_dump_info(struct sk_buff *skb, const struct xt_match *m, const void *in)
 		/* We want to reuse existing compat_to_user */
 		old_fs = get_fs();
 		set_fs(KERNEL_DS);
-		m->compat_to_user(out, in);
+		m->compat_to_user((void __force_user *)out, in);
 		set_fs(old_fs);
 		ret = nla_put(skb, NFTA_MATCH_INFO, XT_ALIGN(m->matchsize), out);
 		kfree(out);
diff --git a/net/netfilter/xt_bpf.c b/net/netfilter/xt_bpf.c
index bbffdbda..12d4da8 100644
--- a/net/netfilter/xt_bpf.c
+++ b/net/netfilter/xt_bpf.c
@@ -23,11 +23,10 @@ MODULE_ALIAS("ip6t_bpf");
 static int bpf_mt_check(const struct xt_mtchk_param *par)
 {
 	struct xt_bpf_info *info = par->matchinfo;
-	struct sock_fprog_kern program;
+	struct sock_fprog program;
 
 	program.len = info->bpf_program_num_elem;
-	program.filter = info->bpf_program;
-
+	program.filter = (struct sock_filter __user *) info->bpf_program;
 	if (sk_unattached_filter_create(&info->filter, &program)) {
 		pr_info("bpf: check failed: parse error\n");
 		return -EINVAL;
diff --git a/net/netfilter/xt_gradm.c b/net/netfilter/xt_gradm.c
new file mode 100644
index 0000000..c566332
--- /dev/null
+++ b/net/netfilter/xt_gradm.c
@@ -0,0 +1,51 @@
+/*
+ *	gradm match for netfilter