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

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Message-ID: <53D052FC.3070409@huawei.com>
Date:	Thu, 24 Jul 2014 08:27:40 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	Mike Qiu <qiudayu@...ux.vnet.ibm.com>, <cgroups@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: at kernel/cpuset.c:1139

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));

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