linux-kernel - Re: Bug#700333: Stack trace

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Date:	Sun, 28 Apr 2013 21:53:12 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Borislav Petkov <bp@...en8.de>
cc:	vitalif@...rcmc.ru, Ben Hutchings <ben@...adent.org.uk>,
	"Venkatesh Pallipadi (Venki)" <venki@...gle.com>,
	700333@...s.debian.org, LKML <linux-kernel@...r.kernel.org>,
	Clemens Ladisch <clemens@...isch.de>
Subject: Re: Bug#700333: Stack trace

On Sun, 28 Apr 2013, Borislav Petkov wrote:

> On Sun, Apr 28, 2013 at 05:26:07PM +0400, vitalif@...rcmc.ru wrote:
> > >When you do a suspend/resume cycle.
> > 
> > OK, yes, I've found it there.
> > 
> > >The bug says "The photo shows a BUG in hrtimer_interrupt() after
> > >making
> > >the hibernation image and while resuming the non-boot CPUs." so I'm
> > >guessing with Thomas' patch it suspends fine now?
> > 
> > Yeah, now I'm using a patched kernel and it's OK.
> > 
> > So, does it mean the problem is fixed by this patch or it's just
> > confirmed and should be fixed by another one?
> 
> Well, it makes sense to me, at least: we remove the handler on suspend
> so that the HPET interrupt doesn't fire. If, when the box comes up
> again, the pending interrupt is cleared, then all is fine - we can
> safely register the handler again and everyone goes about their merry
> way.
> 
> But don't worry, if Thomas has an idea, it is almost guaranteed you'll
> get a proper fix soon. :-)

I merged a slightly better fix, you all were on cc. It's going into
3.10 and it's tagged stable, so it will show up in stable kernels
soon.

Thanks,

	tglx
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