From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Matthew Dawson <matthew@mjdsystems.ca>, linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mm/mempool: Avoid KASAN marking mempool posion checks as use-after-free
Date: Thu, 10 Mar 2016 16:55:48 +0300 [thread overview]
Message-ID: <56E17CE4.7090400@virtuozzo.com> (raw)
In-Reply-To: <1457504179-18942-1-git-send-email-matthew@mjdsystems.ca>
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@mjdsystems.ca>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
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WARNING: multiple messages have this Message-ID (diff)
From: Andrey Ryabinin <aryabinin@virtuozzo.com>
To: Matthew Dawson <matthew@mjdsystems.ca>, <linux-mm@kvack.org>
Cc: <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mm/mempool: Avoid KASAN marking mempool posion checks as use-after-free
Date: Thu, 10 Mar 2016 16:55:48 +0300 [thread overview]
Message-ID: <56E17CE4.7090400@virtuozzo.com> (raw)
In-Reply-To: <1457504179-18942-1-git-send-email-matthew@mjdsystems.ca>
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@mjdsystems.ca>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
next prev parent reply other threads:[~2016-03-10 13:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-09 6:16 [PATCH] mm/mempool: Avoid KASAN marking mempool posion checks as use-after-free Matthew Dawson
2016-03-09 6:16 ` Matthew Dawson
2016-03-10 13:55 ` Andrey Ryabinin [this message]
2016-03-10 13:55 ` Andrey Ryabinin
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