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

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Date:	Sun, 21 Apr 2013 01:38:33 +0400
From:	vitalif@...rcmc.ru
To:	Ben Hutchings <ben@...adent.org.uk>
Cc:	"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

>> Stack trace picture is here:
>> http://vmx.yourcmc.ru/var/pics/IMG_20130306_141045.jpg
>
> Vitaliy reported that his system crashes when suspending to disk.  
> This
> was a regression from 3.2 to 3.7, and remains in 3.8.  Some details 
> of
> this system are in the bug log at <http://bugs.debian.org/700333>.
>
> The photo shows a BUG in hrtimer_interrupt() after making the
> hibernation image and while resuming the non-boot CPUs.  The HPET
> interrupt handler was called immediately after it was registered for 
> CPU
> 2 (?), before the corresponding clock_event_device was registered.
>
> Seems like an obvious race condition, but then shouldn't the HPET 
> have
> been stopped while the CPU was previously offlined?  And it's strange
> that this system apparently hits the race quite reliably.

Anyone?
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