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Date: Fri, 3 Apr 2015 19:06:32 -0700 (PDT)
From: David Rientjes <rientjes@...gle.com>
To: Andrey Ryabinin <a.ryabinin@...sung.com>
cc: Andrew Morton <akpm@...ux-foundation.org>,
Dave Kleikamp <shaggy@...nel.org>,
Christoph Hellwig <hch@....de>,
Sebastian Ott <sebott@...ux.vnet.ibm.com>,
Mikulas Patocka <mpatocka@...hat.com>,
Catalin Marinas <catalin.marinas@....com>,
LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
jfs-discussion@...ts.sourceforge.net,
Dmitry Chernenkov <drcheren@...il.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Alexander Potapenko <glider@...gle.com>
Subject: Re: [PATCH] mm, mempool: kasan: poison mempool elements
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@...sung.com>
Tested-by: David Rientjes <rientjes@...gle.com>
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