netdev - Re: Use-after-free in ep_remove_wait

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Message-ID: <563CC002.5050307@akamai.com>
Date:	Fri, 6 Nov 2015 09:58:10 -0500
From:	Jason Baron <jbaron@...mai.com>
To:	Dmitry Vyukov <dvyukov@...gle.com>,
	syzkaller <syzkaller@...glegroups.com>,
	Rainer Weikusat <rweikusat@...ileactivedefense.com>
Cc:	Michal Kubecek <mkubecek@...e.cz>,
	Al Viro <viro@...iv.linux.org.uk>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	David Howells <dhowells@...hat.com>,
	Paul Moore <paul@...l-moore.com>, salyzyn@...roid.com,
	sds@...ho.nsa.gov, ying.xue@...driver.com,
	netdev <netdev@...r.kernel.org>,
	Kostya Serebryany <kcc@...gle.com>,
	Alexander Potapenko <glider@...gle.com>,
	Andrey Konovalov <andreyknvl@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	Julien Tinnes <jln@...gle.com>,
	Kees Cook <keescook@...gle.com>,
	Mathias Krause <minipli@...glemail.com>
Subject: Re: Use-after-free in ep_remove_wait_queue

On 11/06/2015 08:06 AM, Dmitry Vyukov wrote:
> On Mon, Oct 12, 2015 at 2:17 PM, Dmitry Vyukov <dvyukov@...gle.com> wrote:
>> On Mon, Oct 12, 2015 at 2:14 PM, Eric Dumazet <eric.dumazet@...il.com> wrote:
>>> On Mon, 2015-10-12 at 14:02 +0200, Michal Kubecek wrote:
>>>
>>>> Probably the issue discussed in
>>>>
>>>>   http://thread.gmane.org/gmane.linux.kernel/2057497/
>>>>
>>>> and previous related threads.
>>>>
>>>
>>> Same issue, but Dmitry apparently did not trust me.
>>
>> Just wanted to make sure. Let's consider this as fixed.
> 
> 
> Is it meant to be fixed now?
> 
> I am still seeing use-after-free reports in ep_unregister_pollwait on
> d1e41ff11941784f469f17795a4d9425c2eb4b7a (Nov 5).
> 

Hi,

Indeed - No formal patch has been posted for this yet - we've agreed
that Rainer is going to post the patch for this issue.

Thanks,

-Jason
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