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kasan: No KASAN's memmove check if archs don't have it.

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If archs don't have memmove then the C implementation from lib/string.c is used,
and then it's instrumented by compiler. So there is no need to add KASAN's
memmove to manual checks.

Signed-off-by: Nick Hu <nickhu@andestech.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Nick Hu 2019-10-28 10:40:59 +08:00 committed by Palmer Dabbelt
parent def9d27807
commit 57ee58e393
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1 changed files with 2 additions and 0 deletions
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mm/kasan/common.c
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@ -110,6 +110,7 @@ void *memset(void *addr, int c, size_t len)
return __memset(addr, c, len);
}
#ifdef __HAVE_ARCH_MEMMOVE
#undef memmove
void *memmove(void *dest, const void *src, size_t len)
{
@ -118,6 +119,7 @@ void *memmove(void *dest, const void *src, size_t len)
return __memmove(dest, src, len);
}
#endif
#undef memcpy
void *memcpy(void *dest, const void *src, size_t len)