From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1755257Ab3CLJgU (ORCPT <rfc822;w@1wt.eu>);
	Tue, 12 Mar 2013 05:36:20 -0400
Received: from szxga01-in.huawei.com ([119.145.14.64]:63688 "EHLO
	szxga01-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1754901Ab3CLJgS (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Tue, 12 Mar 2013 05:36:18 -0400
Message-ID: <513EF6F7.90002@huawei.com>
Date: Tue, 12 Mar 2013 17:35:51 +0800
From: Li Zefan <lizefan@huawei.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130307 Thunderbird/17.0.4
MIME-Version: 1.0
To: Hillf Danton <dhillf@gmail.com>
CC: LKML <linux-kernel@vger.kernel.org>, cgroups <cgroups@vger.kernel.org>,
        <linux-mm@kvack.org>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Michal Hocko <mhocko@suse.cz>, Johannes Weiner <hannes@cmpxchg.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [BUG] potential deadlock led by cpu_hotplug lock (memcg involved)
References: <513ECCFE.3070201@huawei.com> <CAJd=RBB7GVp_Ry30SuZVa-FgOogEZ43UnXOGvVKesV=Qk96UDA@mail.gmail.com>
In-Reply-To: <CAJd=RBB7GVp_Ry30SuZVa-FgOogEZ43UnXOGvVKesV=Qk96UDA@mail.gmail.com>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 7bit
X-Originating-IP: [10.135.68.215]
X-CFilter-Loop: Reflected
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 2013/3/12 16:32, Hillf Danton wrote:
> On Tue, Mar 12, 2013 at 2:36 PM, Li Zefan <lizefan@huawei.com> wrote:
>> Seems a new bug in 3.9 kernel?
>>
> Bogus info, perhaps.
> 

No matter it's a real bug or it's false positive, we need to make
lockdep happy.