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 S1751280AbbCIEOd (ORCPT <rfc822;w@1wt.eu>);
	Mon, 9 Mar 2015 00:14:33 -0400
Received: from aserp1040.oracle.com ([141.146.126.69]:30246 "EHLO
	aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1750715AbbCIEOb (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Mon, 9 Mar 2015 00:14:31 -0400
Message-ID: <54FD1E0D.8020406@oracle.com>
Date: Mon, 09 Mar 2015 12:14:05 +0800
From: ethan zhao <ethan.zhao@oracle.com>
Organization: Oracle Corporation
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:17.0) Gecko/20130107 Thunderbird/17.0.2
MIME-Version: 1.0
To: Viresh Kumar <viresh.kumar@linaro.org>
CC: Ethan Zhao <ethan.kernel@gmail.com>,
        santosh shilimkar <santosh.shilimkar@oracle.com>,
        Rafael Wysocki <rjw@rjwysocki.net>,
        Linaro Kernel Mailman List <linaro-kernel@lists.linaro.org>,
        "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
        linux-kernel <linux-kernel@vger.kernel.org>, guangyu.sun@oracle.com,
        "sriharsha.devdas@oracle.com" <sriharsha.devdas@oracle.com>
Subject: Re: [PATCH Resend] cpufreq: Set cpufreq_cpu_data to NULL before putting
 kobject
References: <ed8fd187687cb4ea9afd0bc32107ca5abf03e679.1422663249.git.viresh.kumar@linaro.org> <54CEF123.5050106@oracle.com> <CAKohponOvEnG2Tt5sFPLAHA_bHckHboR7t35-7ey5b_cCKfvKg@mail.gmail.com> <54CEF574.6040404@oracle.com> <CAKohpom589bFL4-eyR1=qrc6uoRtjck_z_SBHS3XU8dJSc4yFg@mail.gmail.com> <54CEF7AA.80401@oracle.com> <CAKohponfkJVYFTsj6ijy0iY3t-R=zN=M0ZkoDmYa-WYTzPuvmw@mail.gmail.com> <54CEFA23.7040705@oracle.com> <CAKohpomBcBVXLW-RW1VXAtkTw-BKd7tHmeFJgmf9CM3vi1Ki-Q@mail.gmail.com> <54CF0106.5050601@oracle.com> <CAKohpomYpEAeQeaB7HVT0cBT5H_P8QQ-e+FQ5OqUoOvfz2ZnOQ@mail.gmail.com> <54CF9209.1050403@oracle.com> <CABawtvPtd2Ln6ghYRHhPy5SbUZqe2yncyeOta2CLt7fV1=504A@mail.gmail.com> <54ED50F5.5080603@linaro.org> <CABawtvPQNY91jS7gUWVVUZ87SG9zjtXDmTYsi0Q7hLbH_dPYng@mail.gmail.com> <54EDF8FC.8060204@oracle.com> <CABawtvPAA2f9vv6WN98OvP3JR1UCApHtGoREpZnVkWSZGWS=kQ@mail.gmail.com> <CAKohponwTNuSpt_i2V=i5ZgfVrNgaFwo17AUFX=CT=pcEwoDVw@mail.gmail.com>
In-Reply-To: <CAKohponwTNuSpt_i2V=i5ZgfVrNgaFwo17AUFX=CT=pcEwoDVw@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Source-IP: ucsinet21.oracle.com [156.151.31.93]
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org


On 2015/3/9 12:06, Viresh Kumar wrote:
> On 9 March 2015 at 07:04, Ethan Zhao <ethan.kernel@gmail.com> wrote:
>> Viresh,
>>      Got that box and did some debug, found the policy->kobj is not initialized.
>> So the race happened between cpufreq_cpu_get() and
>> __cpufreq_add_dev(), and verified 'this' race could be fixed by commit
>>
>> 6d4e81e cpufreq: Ref the policy object sooner
>>
>>      I have reboot the box with crond for more than 12 hours, no warning found.
> Oh, great. Thanks for your work Ethan. You want this to be pushed for 3.18
> stable kernel, right? I will see what I can do.
  Of course we are happy to see it in 3.18 branch.

  Thanks,
  Ethan