[PATCH v2 0/1] kasan: fix redzone overwritten issue under SLUB debug

[Yee Lee]

Sorry not a completed patch. 
please skip this mail.

BR,
Yee


On Wed, 2021-06-23 at 21:35 +0800, yee.lee at mediatek.com wrote:
> From: Yee Lee <yee.lee at mediatek.com>
> 
> Issue: hwtag kasan_unpoison() would overwrite the redzone in those
> object with unaligned object size. This patch Adds memzero_explict()
> to separate the initialization for such condition. The new code path
> is executed about 1.1% during nromal booting process. 
> 
> =============
> Exp: QEMUv5.2(+mte)/SLUB_debug
> code path exec : 941/80854 (1.1%) 
> 
> ---
> Changed since v1:
>  - Apply IS_ENABLED to wrap codes under SLUB debug mode. 
>  - Replace memset() by memzero_explict().
> 
> ---
> Yee Lee (1):
>   kasan: Add memzero init for unaligned size under SLUB debug
> 
>  mm/kasan/kasan.h | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>