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

From: Mike Qiu
Date: Wed Jul 23 2014 - 22:46:45 EST


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@xxxxxxxxxxxxxxxxxx>


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