linux-kernel - Re: [PATCH] net: fix sock_clone reference mismatch with tcp memcontrol

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Date:	Sat, 07 Jan 2012 10:17:02 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	glommer@...allels.com
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	cgroups@...r.kernel.org, gthelen@...gle.com,
	kamezawa.hiroyu@...fujitsu.com, chavey@...gle.com
Subject: Re: [PATCH] net: fix sock_clone reference mismatch with tcp
 memcontrol

From: Glauber Costa <glommer@...allels.com>
Date: Fri,  6 Jan 2012 10:16:39 +0400

> Sockets can also be created through sock_clone. Because it copies
> all data in the sock structure, it also copies the memcg-related pointer,
> and all should be fine. However, since we now use reference counts in
> socket creation, we are left with some sockets that have no reference
> counts. It matters when we destroy them, since it leads to a mismatch.
> 
> Signed-off-by: Glauber Costa <glommer@...allels.com>

Applied, thanks.
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