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Sender: Tejun Heo <htejun@gmail.com>
Date: Thu, 29 Jun 2017 10:24:25 -0400
From: Tejun Heo <tj@kernel.org>
To: Eryu Guan <eguan@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
 Balbir Singh <bsingharora@gmail.com>, liwan@redhat.com,
 "open list:LINUX FOR POWERPC (32-BIT AND 64-BIT)"
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Subject: Re: kworker with empty task->cpus_allowed (was Re: [v4.12-rc1
 regression] mount ext4 fs results in kernel crash on PPC64le host)
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Hello,

Could be the same problem as the one reported in the following thread.

 http://lkml.kernel.org/r/1497266622.15415.39.camel@abdul.in.ibm.com

The root cause there is ppc arch code not setting up possible cpu <->
numa mapping during boot.

Thanks.

-- 
tejun