Xishi Qiu 8d77a6d18a kasan: fix last shadow judgement in memory_is_poisoned_16() ... The shadow which correspond 16 bytes memory may span 2 or 3 bytes. If the memory is aligned on 8, then the shadow takes only 2 bytes. So we check "shadow_first_bytes" is enough, and need not to call "memory_is_poisoned_1(addr + 15);". But the code "if (likely(!last_byte))" is wrong judgement. e.g. addr=0, so last_byte = 15 & KASAN_SHADOW_MASK = 7, then the code will continue to call "memory_is_poisoned_1(addr + 15);" Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Andrey Konovalov <adech.fo@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Michal Marek <mmarek@suse.cz> Cc: <zhongjiang@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-09-17 21:16:07 -07:00
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kasan.c	kasan: fix last shadow judgement in memory_is_poisoned_16()	2015-09-17 21:16:07 -07:00
kasan.h	kasan: remove duplicate definition of the macro KASAN_FREE_PAGE	2015-06-25 17:00:42 -07:00
kasan_init.c	x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()	2015-08-22 14:54:55 +02:00
Makefile	x86/kasan, mm: Introduce generic kasan_populate_zero_shadow()	2015-08-22 14:54:55 +02:00
report.c	.mailmap: Andrey Ryabinin has moved	2015-08-14 15:56:32 -07:00