linux-kernel - Re: Random panic in load

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Message-ID: <20140723105231.GI20603@laptop.programming.kicks-ass.net>
Date:	Wed, 23 Jul 2014 12:52:31 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Michel Dänzer <michel@...nzer.net>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Random panic in load_balance() with 3.16-rc

On Wed, Jul 23, 2014 at 06:31:26PM +0900, Michel Dänzer wrote:
> On 23.07.2014 18:25, Peter Zijlstra wrote:
> > On Wed, Jul 23, 2014 at 10:28:19AM +0200, Peter Zijlstra wrote:
> > 
> >> Of course, the other thing that patch did is clear sgp->power (now
> >> sgc->capacity). 
> > 
> > Hmm, re-reading the thread there isn't a clear confirmation its this
> > patch at all. Could you perhaps bisect this to either verify it is
> > indeed that patch we're talking about:
> > 
> > caffcdd8d27b ("sched: Do not zero sg->cpumask and sg->sgp->power in build_sched_groups()")
> > 
> > or find which patch is causing this.
> 
> It can take a long time for the problem to occur, so I need to run at
> least for one or two days to be at least somewhat sure a given kernel is
> not affected.

Ah, ok, that's unfortunate :/
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