Re: [PATCH v4 5/5] kasan: added functions for unpoisoning stack variables

[Andrey Ryabinin]

On 12/04/2017 10:17 PM, Paul Lawrence wrote:
> From: Alexander Potapenko <glider@xxxxxxxxxx>
> 
> As a code-size optimization, LLVM builds since r279383 may
> bulk-manipulate the shadow region when (un)poisoning large memory
> blocks.  This requires new callbacks that simply do an uninstrumented
> memset().
> 
> This fixes linking the Clang-built kernel when using KASAN.
> 
> Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx>
> [ghackmann@xxxxxxxxxx: fix memset() parameters, and tweak
>  commit message to describe new callbacks]
> Signed-off-by: Greg Hackmann <ghackmann@xxxxxxxxxx>
> Signed-off-by: Paul Lawrence <paullawrence@xxxxxxxxxx>
> ---

Acked-by: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>