From: Li Zefan <lizefan@huawei.com>
To: Tejun Heo <tj@kernel.org>
Cc: Aristeu Rozanski <aris@redhat.com>, Jiri Slaby <jslaby@suse.cz>,
<akpm@linux-foundation.org>, <jirislaby@gmail.com>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] cgroup: fix invalid rcu dereference
Date: Mon, 17 Sep 2012 09:09:08 +0800 [thread overview]
Message-ID: <50567834.9050502@huawei.com> (raw)
In-Reply-To: <20120914170147.GB17747@google.com>
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@redhat.com>
>
> How should this be routed?
>
through akpm's -mm tree.
prev parent reply other threads:[~2012-09-17 1:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-14 9:23 include/linux/cgroup.h:553 suspicious rcu_dereference_check() usage! Jiri Slaby
2012-09-14 9:23 ` Jiri Slaby
2012-09-14 9:40 ` [PATCH] cgroup: fix invalid rcu dereference Jiri Slaby
2012-09-14 13:27 ` Aristeu Rozanski
2012-09-14 17:01 ` Tejun Heo
2012-09-17 1:09 ` Li Zefan [this message]
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