Re: net: Use after free in dst_release on boot

From	Eric Dumazet <eric.dumazet@gmail.com>
Newsgroups	linux.kernel
Subject	Re: net: Use after free in dst_release on boot
Date	2015-12-01 16:30 +0100
Message-ID	<qAV2r-2WT-27@gated-at.bofh.it> (permalink)
References	<qzy7T-7H7-9@gated-at.bofh.it> <qAUJ3-2Pr-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Tue, 2015-12-01 at 16:04 +0100, Hannes Frederic Sowa wrote:
> Hi,
> 
> On Fri, Nov 27, 2015, at 21:48, Sasha Levin wrote:
> > [  117.057618] BUG: KASAN: use-after-free in dst_release+0x9a/0xc0 at
> > addr ffff8806cf7c7560
> > 
> > [  117.058566] Read of size 2 by task swapper/0/1
> > 
> 
> Can you check if the following commit was already applied? net wasn't
> merged into net-next for a while.
> 
> commit d69bbf88c8d0b367cf3e3a052f6daadf630ee566
> Author: Eric Dumazet <edumazet@google.com>
> Date:   Mon Nov 9 17:51:23 2015 -0800
> 
>     net: fix a race in dst_release()

Yes, this most definitely is the fix for this problem.

Thanks Hannes !


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Re: net: Use after free in dst_release on boot Hannes Frederic Sowa <hannes@stressinduktion.org> - 2015-12-01 16:10 +0100
  Re: net: Use after free in dst_release on boot Eric Dumazet <eric.dumazet@gmail.com> - 2015-12-01 16:30 +0100

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