Re: [stable] 2.6.32.21 - uptime related crashes?

From: Greg KH
Date: Tue Aug 30 2011 - 18:43:14 EST


On Thu, Aug 25, 2011 at 09:56:16PM +0300, Faidon Liambotis wrote:
> On Thu, Jul 21, 2011 at 08:45:25PM +0200, Ingo Molnar wrote:
> > * Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> >
> > > On Thu, 2011-07-21 at 14:50 +0200, Nikola Ciprich wrote:
> > > > thanks for the patch! I'll put this on our testing boxes...
> > >
> > > With a patch that frobs the starting value close to overflowing I hope,
> > > otherwise we'll not hear from you in like 7 months ;-)
> > >
> > > > Are You going to push this upstream so we can ask Greg to push this to
> > > > -stable?
> > >
> > > Yeah, I think we want to commit this with a -stable tag, Ingo?
> >
> > yeah - and we also want a Reported-by tag and an explanation of how
> > it can crash and why it matters in practice. I can then stick it into
> > the urgent branch for Linus. (probably will only hit upstream in the
> > merge window though.)
>
> Has this been pushed or has the problem been solved somehow? Time is
> against us on this bug as more boxes will crash as they reach 200 days
> of uptime...
>
> In any case, feel free to use me as a Reported-by, my full report of the
> problem being <20110430173905.GA25641@xxxxxx>.
>
> FWIW and if I understand correctly, my symptoms were caused by *two*
> different bugs:
> a) the 54 bits wraparound at 208 days that Peter fixed above,
> b) a kernel crash at ~215 days related to RT tasks, fixed by
> 305e6835e05513406fa12820e40e4a8ecb63743c (already in -stable).

So, what do I do here as part of the .32-longterm kernel? Is there a
fix that is in Linus's tree that I need to apply here?

confused,

greg k-h
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