Re: [PATCH] mm, mempool: kasan: poison mempool elements

From: David Rientjes
Date: Fri Apr 03 2015 - 22:06:41 EST

On Fri, 3 Apr 2015, Andrey Ryabinin wrote:

> Mempools keep allocated objects in reserved for situations
> when ordinary allocation may not be possible to satisfy.
> These objects shouldn't be accessed before they leave
> the pool.
> This patch poison elements when get into the pool
> and unpoison when they leave it. This will let KASan
> to detect use-after-free of mempool's elements.
> Signed-off-by: Andrey Ryabinin <a.ryabinin@xxxxxxxxxxx>

Tested-by: David Rientjes <rientjes@xxxxxxxxxx>
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