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Date:	Fri, 18 Jul 2014 18:29:51 +0900
From:	Michel Dänzer <michel@...nzer.net>
To:	Peter Zijlstra <peterz@...radead.org>
CC:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: Random panic in load_balance() with 3.16-rc

On 17.07.2014 16:58, Peter Zijlstra wrote:
> On Thu, Jul 17, 2014 at 04:31:04PM +0900, Michel Dänzer wrote:
>>
>> I've been running into the panic captured in the attached picture (hope
>> it's legible) randomly while running 3.16-rc4 and -rc5. I haven't
>> noticed any pattern as to when it happens; at least once it happened
>> while the box was basically sitting idle.
>>
>> dmesg, .config and /proc/cpuinfo attached as well; let me know if you
>> need anything else.
> 
> Does lkml.kernel.org/r/20140716145546.GA6922@...ff.to cure things?

Yes, adding back

               cpumask_clear(sched_group_cpus(sg));

seems to do the trick, thanks.

There's a long weekend coming up for me, but after that I'll be happy to
test any better fix you guys come up with.


-- 
Earthling Michel Dänzer            |                  http://www.amd.com
Libre software enthusiast          |                Mesa and X developer


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