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Date:   Mon, 1 May 2017 15:50:58 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        jiangshanlai@...il.com, linux-kernel@...r.kernel.org
Subject: Re: WARN_ON_ONCE() in process_one_work()?

On Mon, May 01, 2017 at 03:42:37PM -0400, Steven Rostedt wrote:
> On Mon, 1 May 2017 14:42:50 -0400
> Tejun Heo <tj@...nel.org> wrote:
> 
> > Steven's involved a rescuer too.  One possibility was cpuset being
> > involved somehow and messing up the affinity of the rescuer kthread
> > unexpectedly.  Is cpuset involved in any way?
> 
> I didn't do anything with cpuset. I did take CPUs offline though.
> 
> I'm currently testing changes, but when its done, I'll remove the
> "WARN_ON() comment out" and see if I can reproduce it again.

Were you also using nohz_full?

Thanks.

-- 
tejun

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