Andy Lutomirski 91e5ed49fc x86/asm/decoder: Fix and enforce max instruction size in the insn decoder ... x86 instructions cannot exceed 15 bytes, and the instruction decoder should enforce that. Prior to 6ba48ff46f, the instruction length limit was implicitly set to 16, which was an approximation of 15, but there is currently no limit at all. Fix MAX_INSN_SIZE (it should be 15, not 16), and fix the decoder to reject instructions that exceed MAX_INSN_SIZE. Other than potentially confusing some of the decoder sanity checks, I'm not aware of any actual problems that omitting this check would cause, nor am I aware of any practical problems caused by the MAX_INSN_SIZE error. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Dave Hansen <dave.hansen@linux.intel.com> Fixes: 6ba48ff46f ("x86: Remove arbitrary instruction size limit ... Link: http://lkml.kernel.org/r/f8f0bc9b8c58cfd6830f7d88400bf1396cbdcd0f.1422403511.git.luto@amacapital.net Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-02-19 00:01:24 +01:00
..
.gitignore
atomic64_32.c
atomic64_386_32.S
atomic64_cx8_32.S
cache-smp.c
checksum_32.S
clear_page_64.S
cmdline.c	x86, boot: Carve out early cmdline parsing function	2014-05-20 20:21:24 -07:00
cmpxchg8b_emu.S	x86: Improve cmpxchg8b_emu.S	2014-10-08 10:05:49 +02:00
cmpxchg16b_emu.S	x86: Improve cmpxchg16b_emu.S	2014-10-08 10:05:49 +02:00
copy_page_64.S
copy_user_64.S	x86-64, copy_user: Use leal to produce 32-bit results	2013-11-20 13:57:07 -08:00
copy_user_nocache_64.S
csum-copy_64.S
csum-partial_64.c
csum-wrappers_64.c	x86-64: make csum_partial_copy_from_user() error handling consistent	2014-11-16 11:00:42 -08:00
delay.c	x86: Delete non-required instances of include <linux/init.h>	2014-01-06 21:25:18 -08:00
getuser.S
inat.c
insn.c	x86/asm/decoder: Fix and enforce max instruction size in the insn decoder	2015-02-19 00:01:24 +01:00
iomap_copy_64.S
Makefile	net, lib: kill arch_fast_hash library bits	2014-12-10 15:17:46 -05:00
memcpy_32.c	asmlinkage, x86: Fix 32bit memcpy for LTO	2014-02-13 18:14:46 -08:00
memcpy_64.S
memmove_64.S
memset_64.S
misc.c
mmx_32.c
msr-reg-export.c
msr-reg.S
msr-smp.c
msr.c	x86: Fix typo preventing msr_set/clear_bit from having an effect	2014-05-09 08:42:32 -07:00
putuser.S
rwsem.S
string_32.c
strstr_32.c
thunk_32.S	x86: Unwind-annotate thunk_32.S	2014-10-08 12:31:45 +02:00
thunk_64.S	x86: Speed up ___preempt_schedule*() by using THUNK helpers	2014-09-24 15:15:38 +02:00
usercopy.c
usercopy_32.c
usercopy_64.c
x86-opcode-map.txt	x86/asm/decoder: Explain CALLW discrepancy between Intel and AMD	2015-02-18 21:01:59 +01:00