Masami Hiramatsu 53a019a951 x86: Fix insn decoder for longer instruction ...

Fix x86 insn decoder for hardening against invalid length
instructions. This adds length checkings for each byte-read
site and if it exceeds MAX_INSN_SIZE, returns immediately.
This can happen when decoding user-space binary.

Caller can check whether it happened by checking insn.*.got
member is set or not.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: acme@redhat.com
Cc: ming.m.lin@intel.com
Cc: robert.richter@amd.com
Cc: ravitillo@lbl.gov
Cc: yrl.pp-manager.tt@hitachi.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20111007133155.10933.58577.stgit@localhost.localdomain
Signed-off-by: Ingo Molnar <mingo@elte.hu>

2011-10-10 09:05:51 +02:00

..

.gitignore

x86: Gitignore: arch/x86/lib/inat-tables.c

2009-11-04 13:11:28 +01:00

atomic64_32.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

atomic64_386_32.S

x86: Use {push,pop}_cfi in more places

2011-02-28 18:06:22 +01:00

atomic64_cx8_32.S

x86: Use {push,pop}_cfi in more places

2011-02-28 18:06:22 +01:00

cache-smp.c

x86, lib: Add wbinvd smp helpers

2010-01-22 16:05:42 -08:00

checksum_32.S

x86: Use {push,pop}_cfi in more places

2011-02-28 18:06:22 +01:00

clear_page_64.S

x86, mem: clear_page_64.S: Support clear_page() with enhanced REP MOVSB/STOSB

2011-05-17 15:40:27 -07:00

cmpxchg8b_emu.S

x86: Provide an alternative() based cmpxchg64()

2009-09-30 22:55:59 +02:00

cmpxchg16b_emu.S

percpu: Omit segment prefix in the UP case for cmpxchg_double

2011-03-27 19:25:36 -07:00

cmpxchg.c

x86, asm: Merge cmpxchg_486_u64() and cmpxchg8b_emu()

2010-07-28 17:05:11 -07:00

copy_page_64.S

x86: Make alternative instruction pointers relative

2011-07-13 11:22:56 -07:00

copy_user_64.S

x86, 64-bit: Fix copy_[to/from]_user() checks for the userspace address limit

2011-05-18 12:49:00 +02:00

copy_user_nocache_64.S

x86: wrong register was used in align macro

2008-07-30 10:10:39 -07:00

csum-copy_64.S

x86: Clean up csum-copy_64.S a bit

2011-03-18 10:44:26 +01:00

csum-partial_64.c

x86: Fix common misspellings

2011-03-18 10:39:30 +01:00

csum-wrappers_64.c

x86: clean up csum-wrappers_64.c some more

2008-02-19 16:18:32 +01:00

delay.c

x86: udelay: Use this_cpu_read to avoid address calculation

2011-01-04 06:08:55 +01:00

getuser.S

x86: use _types.h headers in asm where available

2009-02-13 11:35:01 -08:00

inat.c

x86: AVX instruction set decoder support

2009-10-29 08:47:46 +01:00

insn.c

x86: Fix insn decoder for longer instruction

2011-10-10 09:05:51 +02:00

iomap_copy_64.S

x86_64: move lib

2007-10-11 11:17:08 +02:00

Makefile

Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-07-22 17:02:24 -07:00

memcpy_32.c

x86, mem: Optimize memmove for small size and unaligned cases

2010-09-24 18:57:11 -07:00

memcpy_64.S

Merge branches 'x86-apic-for-linus', 'x86-asm-for-linus' and 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2011-05-19 17:49:35 -07:00

memmove_64.S

x86: Make alternative instruction pointers relative

2011-07-13 11:22:56 -07:00

memset_64.S

x86, mem: memset_64.S: Optimize memset by enhanced REP MOVSB/STOSB

2011-05-17 15:40:31 -07:00

mmx_32.c

x86: clean up mmx_32.c

2008-04-17 17:40:47 +02:00

msr-reg-export.c

x86, msr: change msr-reg.o to obj-y, and export its symbols

2009-09-04 10:00:09 -07:00

msr-reg.S

x86, msr: Fix msr-reg.S compilation with gas 2.16.1, on 32-bit too

2009-09-03 21:26:34 +02:00

msr-smp.c

x86, msr: msrs_alloc/free for CONFIG_SMP=n

2009-12-16 15:36:32 -08:00

msr.c

x86, msr: msrs_alloc/free for CONFIG_SMP=n

2009-12-16 15:36:32 -08:00

putuser.S

x86: merge putuser asm functions.

2008-07-09 09:14:13 +02:00

rwlock.S

x86: Fix write lock scalability 64-bit issue

2011-07-21 09:03:36 +02:00

rwsem.S

x86: Unify rwsem assembly implementation

2011-07-21 09:03:32 +02:00

string_32.c

x86: coding style fixes to arch/x86/lib/string_32.c

2008-08-15 16:53:25 +02:00

strstr_32.c

x86: coding style fixes to arch/x86/lib/strstr_32.c

2008-08-15 16:53:24 +02:00

thunk_32.S

x86: Remove unused bits from lib/thunk_*.S

2011-02-28 18:06:22 +01:00

thunk_64.S

x86: Fix write lock scalability 64-bit issue

2011-07-21 09:03:36 +02:00

usercopy_32.c

x86: Turn the copy_from_user check into an (optional) compile time warning

2009-10-01 11:31:04 +02:00

usercopy_64.c

x86, 64-bit: Clean up user address masking

2009-06-20 15:40:00 -07:00

usercopy.c

x86, perf: Make copy_from_user_nmi() a library function

2011-07-21 20:41:57 +02:00

x86-opcode-map.txt

x86: Add Intel FMA instructions to x86 opcode map

2009-10-29 08:47:47 +01:00