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Andy Lutomirski 6434098629 x86/asm/64: Clear AC on NMI entries 
commit e93c17301ac55321fc18e0f8316e924e58a83c8c upstream.

This closes a hole in our SMAP implementation.

This patch comes from grsecurity. Good catch!

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/314cc9f294e8f14ed85485727556ad4f15bb1659.1502159503.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-24 17:02:36 -07:00
..
alpha osf_wait4(): fix infoleak 2017-05-25 14:30:17 +02:00
arc mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
arm KVM: arm/arm64: Handle hva aging while destroying the vm 2017-08-12 19:29:09 -07:00
arm64 mm: revert x86_64 and arm64 ELF_ET_DYN_BASE base changes 2017-08-24 17:02:35 -07:00
avr32 avr32: off by one in at32_init_pio() 2016-10-07 15:23:45 +02:00
blackfin net: smc91x: fix SMC accesses 2016-09-30 10:18:37 +02:00
c6x c6x/ptrace: Remove useless PTRACE_SETREGSET implementation 2017-03-31 09:49:53 +02:00
cris cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected 2017-01-12 11:22:48 +01:00
frv mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
h8300 h8300/ptrace: Fix incorrect register transfer count 2017-03-31 09:49:53 +02:00
hexagon hexagon: fix strncpy_from_user() error return 2016-09-24 10:07:44 +02:00
ia64 ia64: copy_from_user() should zero the destination on access_ok() failure 2016-09-24 10:07:46 +02:00
m32r m32r: fix __get_user() 2016-09-24 10:07:43 +02:00
m68k m68k: Fix ndelay() macro 2016-12-15 08:49:23 -08:00
metag metag/uaccess: Check access_ok in strncpy_from_user 2017-05-25 14:30:16 +02:00
microblaze microblaze: fix copy_from_user() 2016-09-24 10:07:43 +02:00
mips MIPS: Fix a typo: s/preset/present/ in r2-to-r6 emulation error message 2017-07-27 15:06:08 -07:00
mn10300 mn10300: copy_from_user() should zero on access_ok() failure... 2016-09-24 10:07:45 +02:00
nios2 nios2: reserve boot memory for device tree 2017-04-12 12:38:34 +02:00
openrisc openrisc: Add _text symbol to fix ksym build error 2017-08-06 19:19:45 -07:00
parisc parisc/mm: Ensure IRQs are off in switch_mm() 2017-07-21 07:44:56 +02:00
powerpc Revert "powerpc/numa: Fix percpu allocations to be NUMA aware" 2017-08-06 19:19:40 -07:00
s390 bpf, s390: fix jit branch offset related to ldimm64 2017-08-12 19:29:08 -07:00
score score: fix copy_from_user() and friends 2016-09-24 10:07:44 +02:00
sh mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
sparc sparc64: Prevent perf from running during super critical sections 2017-08-12 19:29:09 -07:00
tile mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
um um: Don't discard .text.exit section 2016-09-07 08:32:38 +02:00
unicore32 pwm: Changes for v4.4-rc1 2015-11-11 09:16:10 -08:00
x86 x86/asm/64: Clear AC on NMI entries 2017-08-24 17:02:36 -07:00
xtensa mm: larger stack guard gap, between vmas 2017-06-26 07:13:11 +02:00
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