Re: Random panic in load_balance() with 3.16-rc

Peter Zijlstra
2014-07-23T10:52:35Z

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 :/