linux-kernel - Re: [PATCH] mm/mempool: Avoid KASAN marking mempool posion checks as use-after-free

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Date:	Thu, 10 Mar 2016 16:55:48 +0300
From:	Andrey Ryabinin <aryabinin@...tuozzo.com>
To:	Matthew Dawson <matthew@...systems.ca>, <linux-mm@...ck.org>
CC:	<linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] mm/mempool: Avoid KASAN marking mempool posion checks as
 use-after-free

On 03/09/2016 09:16 AM, Matthew Dawson wrote:
> When removing an element from the mempool, mark it as unpoisoned in KASAN
> before verifying its contents for SLUB/SLAB debugging.  Otherwise KASAN
> will flag the reads checking the element use-after-free writes as
> use-after-free reads.
> 
> Signed-off-by: Matthew Dawson <matthew@...systems.ca>

Acked-by: Andrey Ryabinin <aryabinin@...tuozzo.com>