linux-kernel - Re: WARNING: at kernel/cpuset.c:1139

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Message-ID: <53D0737C.2030305@linux.vnet.ibm.com>
Date:	Thu, 24 Jul 2014 10:46:20 +0800
From:	Mike Qiu <qiudayu@...ux.vnet.ibm.com>
To:	Li Zefan <lizefan@...wei.com>
CC:	Tejun Heo <tj@...nel.org>, cgroups@...r.kernel.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: at kernel/cpuset.c:1139

On 07/24/2014 08:27 AM, Li Zefan wrote:
> On 2014/7/23 23:12, Tejun Heo wrote:
>> On Wed, Jul 23, 2014 at 10:50:29AM +0800, Mike Qiu wrote:
>>> commit 734d45130cb ("cpuset: update cs->effective_{cpus, mems} when config
>>> changes") introduce the below warning in my server.
>>>
>>> [   35.652137] ------------[ cut here ]------------
>>> [   35.652141] WARNING: at kernel/cpuset.c:1139
>> Hah, can you reproduce it?  If so, can you detail how?
>>
> It's a typo.
>
> WARN_ON(!cgroup_on_dfl(cp->css.cgroup) &&
> 	nodes_equal(cp->mems_allowed, cp->effective_mems));
>
> should be
>
> WARN_ON(!cgroup_on_dfl(cp->css.cgroup) &&
> 	!nodes_equal(cp->mems_allowed, cp->effective_mems));

Yes, it is. This warning disappeared after this patch.

Reported-and-Tested-by: Mike Qiu <qiudayu@...ux.vnet.ibm.com>
>

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