--- /dev/null
+From 1fa839b4986d648b907d117275869a0e46c324b9 Mon Sep 17 00:00:00 2001
+From: Germano Percossi <germano.percossi@citrix.com>
+Date: Fri, 7 Apr 2017 12:29:38 +0100
+Subject: CIFS: store results of cifs_reopen_file to avoid infinite wait
+
+From: Germano Percossi <germano.percossi@citrix.com>
+
+commit 1fa839b4986d648b907d117275869a0e46c324b9 upstream.
+
+This fixes Continuous Availability when errors during
+file reopen are encountered.
+
+cifs_user_readv and cifs_user_writev would wait for ever if
+results of cifs_reopen_file are not stored and for later inspection.
+
+In fact, results are checked and, in case of errors, a chain
+of function calls leading to reads and writes to be scheduled in
+a separate thread is skipped.
+These threads will wake up the corresponding waiters once reads
+and writes are done.
+
+However, given the return value is not stored, when rc is checked
+for errors a previous one (always zero) is inspected instead.
+This leads to pending reads/writes added to the list, making
+cifs_user_readv and cifs_user_writev wait for ever.
+
+Signed-off-by: Germano Percossi <germano.percossi@citrix.com>
+Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
+Signed-off-by: Steve French <smfrench@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ fs/cifs/file.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+--- a/fs/cifs/file.c
++++ b/fs/cifs/file.c
+@@ -2542,7 +2542,7 @@ cifs_write_from_iter(loff_t offset, size
+ wdata->credits = credits;
+
+ if (!wdata->cfile->invalidHandle ||
+- !cifs_reopen_file(wdata->cfile, false))
++ !(rc = cifs_reopen_file(wdata->cfile, false)))
+ rc = server->ops->async_writev(wdata,
+ cifs_uncached_writedata_release);
+ if (rc) {
+@@ -2977,7 +2977,7 @@ cifs_send_async_read(loff_t offset, size
+ rdata->credits = credits;
+
+ if (!rdata->cfile->invalidHandle ||
+- !cifs_reopen_file(rdata->cfile, true))
++ !(rc = cifs_reopen_file(rdata->cfile, true)))
+ rc = server->ops->async_readv(rdata);
+ error:
+ if (rc) {
+@@ -3564,7 +3564,7 @@ static int cifs_readpages(struct file *f
+ }
+
+ if (!rdata->cfile->invalidHandle ||
+- !cifs_reopen_file(rdata->cfile, true))
++ !(rc = cifs_reopen_file(rdata->cfile, true)))
+ rc = server->ops->async_readv(rdata);
+ if (rc) {
+ add_credits_and_wake_if(server, rdata->credits, 0);
--- /dev/null
+From 5376366886251e2f8f248704adb620a4bc4c0937 Mon Sep 17 00:00:00 2001
+From: Cameron Gutman <aicommander@gmail.com>
+Date: Mon, 10 Apr 2017 20:44:25 -0700
+Subject: Input: xpad - add support for Razer Wildcat gamepad
+
+From: Cameron Gutman <aicommander@gmail.com>
+
+commit 5376366886251e2f8f248704adb620a4bc4c0937 upstream.
+
+Signed-off-by: Cameron Gutman <aicommander@gmail.com>
+Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ drivers/input/joystick/xpad.c | 2 ++
+ 1 file changed, 2 insertions(+)
+
+--- a/drivers/input/joystick/xpad.c
++++ b/drivers/input/joystick/xpad.c
+@@ -186,6 +186,7 @@ static const struct xpad_device {
+ { 0x1430, 0x8888, "TX6500+ Dance Pad (first generation)", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX },
+ { 0x146b, 0x0601, "BigBen Interactive XBOX 360 Controller", 0, XTYPE_XBOX360 },
+ { 0x1532, 0x0037, "Razer Sabertooth", 0, XTYPE_XBOX360 },
++ { 0x1532, 0x0a03, "Razer Wildcat", 0, XTYPE_XBOXONE },
+ { 0x15e4, 0x3f00, "Power A Mini Pro Elite", 0, XTYPE_XBOX360 },
+ { 0x15e4, 0x3f0a, "Xbox Airflo wired controller", 0, XTYPE_XBOX360 },
+ { 0x15e4, 0x3f10, "Batarang Xbox 360 controller", 0, XTYPE_XBOX360 },
+@@ -308,6 +309,7 @@ static struct usb_device_id xpad_table[]
+ XPAD_XBOX360_VENDOR(0x1689), /* Razer Onza */
+ XPAD_XBOX360_VENDOR(0x24c6), /* PowerA Controllers */
+ XPAD_XBOX360_VENDOR(0x1532), /* Razer Sabertooth */
++ XPAD_XBOXONE_VENDOR(0x1532), /* Razer Wildcat */
+ XPAD_XBOX360_VENDOR(0x15e4), /* Numark X-Box 360 controllers */
+ XPAD_XBOX360_VENDOR(0x162e), /* Joytech X-Box 360 controllers */
+ { }
--- /dev/null
+From f2200ac311302fcdca6556fd0c5127eab6c65a3e Mon Sep 17 00:00:00 2001
+From: Peter Zijlstra <peterz@infradead.org>
+Date: Tue, 11 Apr 2017 10:10:28 +0200
+Subject: perf/x86: Avoid exposing wrong/stale data in intel_pmu_lbr_read_32()
+
+From: Peter Zijlstra <peterz@infradead.org>
+
+commit f2200ac311302fcdca6556fd0c5127eab6c65a3e upstream.
+
+When the perf_branch_entry::{in_tx,abort,cycles} fields were added,
+intel_pmu_lbr_read_32() wasn't updated to initialize them.
+
+Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
+Cc: Linus Torvalds <torvalds@linux-foundation.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: linux-kernel@vger.kernel.org
+Fixes: 135c5612c460 ("perf/x86/intel: Support Haswell/v4 LBR format")
+Signed-off-by: Ingo Molnar <mingo@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/kernel/cpu/perf_event_intel_lbr.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/arch/x86/kernel/cpu/perf_event_intel_lbr.c
++++ b/arch/x86/kernel/cpu/perf_event_intel_lbr.c
+@@ -268,6 +268,9 @@ static void intel_pmu_lbr_read_32(struct
+ cpuc->lbr_entries[i].to = msr_lastbranch.to;
+ cpuc->lbr_entries[i].mispred = 0;
+ cpuc->lbr_entries[i].predicted = 0;
++ cpuc->lbr_entries[i].in_tx = 0;
++ cpuc->lbr_entries[i].abort = 0;
++ cpuc->lbr_entries[i].cycles = 0;
+ cpuc->lbr_entries[i].reserved = 0;
+ }
+ cpuc->lbr_stack.nr = i;
cgroup-avoid-attaching-a-cgroup-root-to-two-different-superblocks.patch
+cifs-store-results-of-cifs_reopen_file-to-avoid-infinite-wait.patch
+input-xpad-add-support-for-razer-wildcat-gamepad.patch
+perf-x86-avoid-exposing-wrong-stale-data-in-intel_pmu_lbr_read_32.patch
+x86-vdso-plug-race-between-mapping-and-elf-header-setup.patch
+x86-vdso-ensure-vdso32_enabled-gets-set-to-valid-values-only.patch
--- /dev/null
+From c06989da39cdb10604d572c8c7ea8c8c97f3c483 Mon Sep 17 00:00:00 2001
+From: Mathias Krause <minipli@googlemail.com>
+Date: Mon, 10 Apr 2017 17:14:27 +0200
+Subject: x86/vdso: Ensure vdso32_enabled gets set to valid values only
+
+From: Mathias Krause <minipli@googlemail.com>
+
+commit c06989da39cdb10604d572c8c7ea8c8c97f3c483 upstream.
+
+vdso_enabled can be set to arbitrary integer values via the kernel command
+line 'vdso32=' parameter or via 'sysctl abi.vsyscall32'.
+
+load_vdso32() only maps VDSO if vdso_enabled == 1, but ARCH_DLINFO_IA32
+merily checks for vdso_enabled != 0. As a consequence the AT_SYSINFO_EHDR
+auxiliary vector for the VDSO_ENTRY is emitted with a NULL pointer which
+causes a segfault when the application tries to use the VDSO.
+
+Restrict the valid arguments on the command line and the sysctl to 0 and 1.
+
+Fixes: b0b49f2673f0 ("x86, vdso: Remove compat vdso support")
+Signed-off-by: Mathias Krause <minipli@googlemail.com>
+Acked-by: Andy Lutomirski <luto@amacapital.net>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Roland McGrath <roland@redhat.com>
+Link: http://lkml.kernel.org/r/1491424561-7187-1-git-send-email-minipli@googlemail.com
+Link: http://lkml.kernel.org/r/20170410151723.518412863@linutronix.de
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/vdso/vdso32-setup.c | 11 +++++++++--
+ 1 file changed, 9 insertions(+), 2 deletions(-)
+
+--- a/arch/x86/vdso/vdso32-setup.c
++++ b/arch/x86/vdso/vdso32-setup.c
+@@ -31,8 +31,10 @@ static int __init vdso32_setup(char *s)
+ {
+ vdso32_enabled = simple_strtoul(s, NULL, 0);
+
+- if (vdso32_enabled > 1)
++ if (vdso32_enabled > 1) {
+ pr_warn("vdso32 values other than 0 and 1 are no longer allowed; vdso disabled\n");
++ vdso32_enabled = 0;
++ }
+
+ return 1;
+ }
+@@ -89,13 +91,18 @@ subsys_initcall(sysenter_setup);
+ /* Register vsyscall32 into the ABI table */
+ #include <linux/sysctl.h>
+
++static const int zero;
++static const int one = 1;
++
+ static struct ctl_table abi_table2[] = {
+ {
+ .procname = "vsyscall32",
+ .data = &vdso32_enabled,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+- .proc_handler = proc_dointvec
++ .proc_handler = proc_dointvec_minmax,
++ .extra1 = (int *)&zero,
++ .extra2 = (int *)&one,
+ },
+ {}
+ };
--- /dev/null
+From 6fdc6dd90272ce7e75d744f71535cfbd8d77da81 Mon Sep 17 00:00:00 2001
+From: Thomas Gleixner <tglx@linutronix.de>
+Date: Mon, 10 Apr 2017 17:14:28 +0200
+Subject: x86/vdso: Plug race between mapping and ELF header setup
+
+From: Thomas Gleixner <tglx@linutronix.de>
+
+commit 6fdc6dd90272ce7e75d744f71535cfbd8d77da81 upstream.
+
+The vsyscall32 sysctl can racy against a concurrent fork when it switches
+from disabled to enabled:
+
+ arch_setup_additional_pages()
+ if (vdso32_enabled)
+ --> No mapping
+ sysctl.vsysscall32()
+ --> vdso32_enabled = true
+ create_elf_tables()
+ ARCH_DLINFO_IA32
+ if (vdso32_enabled) {
+ --> Add VDSO entry with NULL pointer
+
+Make ARCH_DLINFO_IA32 check whether the VDSO mapping has been set up for
+the newly forked process or not.
+
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Acked-by: Andy Lutomirski <luto@amacapital.net>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Mathias Krause <minipli@googlemail.com>
+Link: http://lkml.kernel.org/r/20170410151723.602367196@linutronix.de
+Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+
+---
+ arch/x86/include/asm/elf.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/x86/include/asm/elf.h
++++ b/arch/x86/include/asm/elf.h
+@@ -277,7 +277,7 @@ struct task_struct;
+
+ #define ARCH_DLINFO_IA32 \
+ do { \
+- if (vdso32_enabled) { \
++ if (VDSO_CURRENT_BASE) { \
+ NEW_AUX_ENT(AT_SYSINFO, VDSO_ENTRY); \
+ NEW_AUX_ENT(AT_SYSINFO_EHDR, VDSO_CURRENT_BASE); \
+ } \
projects / thirdparty / kernel / stable-queue.git / commitdiff
