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Date: Wed, 9 Jun 2010 17:15:27 -0400
Message-ID: <AANLkTilG5bjN5QaOChmuVN6vT7kMK4eGaV-DvPynBn_t@mail.gmail.com>
Subject: Re: 2.6.35-rc2-git1 - include/linux/cgroup.h:534 invoked 
	rcu_dereference_check() without protection!
From: Miles Lane <miles.lane@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: paulmck@linux.vnet.ibm.com, Vivek Goyal <vgoyal@redhat.com>,
       Eric Paris <eparis@redhat.com>, Lai Jiangshan <laijs@cn.fujitsu.com>,
       Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
       nauman@google.com, eric.dumazet@gmail.com, netdev@vger.kernel.org,
       Jens Axboe <jens.axboe@oracle.com>,
       Gui Jianfeng <guijianfeng@cn.fujitsu.com>,
       Li Zefan <lizf@cn.fujitsu.com>,
       Johannes Berg <johannes@sipsolutions.net>
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On Wed, Jun 9, 2010 at 2:15 PM, Peter Zijlstra <peterz@infradead.org> wrote:
> On Wed, 2010-06-09 at 19:57 +0200, Peter Zijlstra wrote:
>> + ? ? ? /*
>> + ? ? ? ?* We're not in the pid-hash yet so no cgroup attach races, and the
>> + ? ? ? ?* cgroup is pinned by the parent running this.
>> + ? ? ? ?*
>> + ? ? ? ?* Silence PROVE_RCU.
>> + ? ? ? ?*/
>
> Hum,.. not sure that's actually true though, the parent itself is still
> susceptible to races afaict..

Do you want what you sent earlier tested, or should I wait for another patch?
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