[PATCH 02/11] replace memory function

[Russell King - ARM Linux]

On Wed, Oct 11, 2017 at 04:22:18PM +0800, Abbott Liu wrote:
> From: Andrey Ryabinin <a.ryabinin at samsung.com>
> 
> Functions like memset/memmove/memcpy do a lot of memory accesses.
> If bad pointer passed to one of these function it is important
> to catch this. Compiler's instrumentation cannot do this since
> these functions are written in assembly.
> 
> KASan replaces memory functions with manually instrumented variants.
> Original functions declared as weak symbols so strong definitions
> in mm/kasan/kasan.c could replace them. Original functions have aliases
> with '__' prefix in name, so we could call non-instrumented variant
> if needed.

KASAN in the decompressor makes no sense, so I think you need to
mark the decompressor compilation as such in this patch so it,
as a whole, sees no change.

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