linux-kernel - Re: [PATCH] unix: avoid use-after-free in ep_remove_wait

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Message-ID: <878u65n5ak.fsf@doppelsaurus.mobileactivedefense.com>
Date:	Tue, 10 Nov 2015 17:16:35 +0000
From:	Rainer Weikusat <rweikusat@...ileactivedefense.com>
To:	David Miller <davem@...emloft.net>
Cc:	rweikusat@...ileactivedefense.com, jbaron@...mai.com,
	dvyukov@...gle.com, syzkaller@...glegroups.com, mkubecek@...e.cz,
	viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, hannes@...essinduktion.org,
	dhowells@...hat.com, paul@...l-moore.com, salyzyn@...roid.com,
	sds@...ho.nsa.gov, ying.xue@...driver.com, netdev@...r.kernel.org,
	kcc@...gle.com, glider@...gle.com, andreyknvl@...gle.com,
	sasha.levin@...cle.com, jln@...gle.com, keescook@...gle.com,
	minipli@...glemail.com
Subject: Re: [PATCH] unix: avoid use-after-free in ep_remove_wait_queue

David Miller <davem@...emloft.net> writes:
> From: Rainer Weikusat <rweikusat@...ileactivedefense.com>
> Date: Mon, 09 Nov 2015 14:40:48 +0000
>
>> +	__remove_wait_queue(&unix_sk(u->peer_wake.private)->peer_wait,
>> +			    &u->peer_wake);
>
> This is more simply:
>
> 	__remove_wait_queue(&unix_sk(u->peer_wake.private)->peer_wait, q);

Thank you for pointing this out.

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