Re: [PATCH] mm/slab: Perform init_on_free earlier

2020-12-10 Thread Joonsoo Kim 
2020년 12월 11일 (금) 오전 3:37, Alexander Popov 님이 작성:
>
> Currently in CONFIG_SLAB init_on_free happens too late, and heap
> objects go to the heap quarantine not being erased.
>
> Lets move init_on_free clearing before calling kasan_slab_free().
> In that case heap quarantine will store erased objects, similarly
> to CONFIG_SLUB=y behavior.
>
> Signed-off-by: Alexander Popov 
> Reviewed-by: Alexander Potapenko 

Acked-by: Joonsoo Kim

Re: [PATCH] mm/slab: Perform init_on_free earlier

2020-12-10 Thread David Rientjes 
On Thu, 10 Dec 2020, Alexander Popov wrote:

> Currently in CONFIG_SLAB init_on_free happens too late, and heap
> objects go to the heap quarantine not being erased.
> 
> Lets move init_on_free clearing before calling kasan_slab_free().
> In that case heap quarantine will store erased objects, similarly
> to CONFIG_SLUB=y behavior.
> 
> Signed-off-by: Alexander Popov 
> Reviewed-by: Alexander Potapenko 

Acked-by: David Rientjes