linux-kernel - Re: Use-after-free in ep_remove_wait

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Message-ID: <CACT4Y+Zu7J0n6dU1dSfiW3F9Q0Us3_DBVcD5Pi9NG9LER8MmRg@mail.gmail.com>
Date:	Fri, 6 Nov 2015 14:06:19 +0100
From:	Dmitry Vyukov <dvyukov@...gle.com>
To:	syzkaller <syzkaller@...glegroups.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>,
	Jason Baron <jbaron@...mai.com>,
	Rainer Weikusat <rweikusat@...ileactivedefense.com>
Subject: Re: Use-after-free in ep_remove_wait_queue

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).
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