linux-kernel - Re: [PATCH] cgroup: fix invalid rcu dereference

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Message-ID: <50567834.9050502@huawei.com>
Date:	Mon, 17 Sep 2012 09:09:08 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Aristeu Rozanski <aris@...hat.com>, Jiri Slaby <jslaby@...e.cz>,
	<akpm@...ux-foundation.org>, <jirislaby@...il.com>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] cgroup: fix invalid rcu dereference

On 2012/9/15 1:01, Tejun Heo wrote:
> On Fri, Sep 14, 2012 at 09:27:38AM -0400, Aristeu Rozanski wrote:
>> On Fri, Sep 14, 2012 at 11:40:12AM +0200, Jiri Slaby wrote:
>>> Commit "device_cgroup: convert device_cgroup internally to policy +
>>> exceptions" removed rcu locks which are needed in task_devcgroup
>>> called in this chain: devcgroup_inode_mknod OR
>>> __devcgroup_inode_permission -> __devcgroup_inode_permission ->
>>> task_devcgroup -> task_subsys_state -> task_subsys_state_check.
>>
>> ugh, missed that
>>
> ...
>> thanks Jiri
>> Acked-by: Aristeu Rozanski <aris@...hat.com>
> 
> How should this be routed?
> 

through akpm's -mm tree.

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