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Date: Fri, 16 May 2014 18:29:45 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: jjherne@linux.vnet.ibm.com, Sasha Levin <sasha.levin@oracle.com>,
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Subject: Re: workqueue: WARN at at kernel/workqueue.c:2176
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On Sat, May 17, 2014 at 12:18:06AM +0800, Lai Jiangshan wrote:
> so the scheduler/set_cpus_allowed_ptr()/cpu_active_mask should be the first
> place to fix.

I'm not arguing about that, not to mention that this is userspace
exposed and nobody protects that.

But I was expecting kernel stuff that calls it on hotplug to be
serialized thusly, but apparently not so.

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