linux-kernel - Re: 3.3.2 - Crash in kthread_data (power_supply

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Date:	Tue, 17 Apr 2012 17:44:26 +0200
From:	Thomas Meyer <thomas@...3r.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	cbou@...l.ru, stern@...land.harvard.edu,
	Linux PM list <linux-pm@...r.kernel.org>
Subject: Re: 3.3.2 - Crash in kthread_data (power_supply_core/led?)

Am Sonntag, den 15.04.2012, 20:36 +0200 schrieb Rafael J. Wysocki:
> On Sunday, April 15, 2012, Thomas Meyer wrote:
> > Hi,
> > 
> > I resumed my computer from RAM today and found this crash on the text
> > console -> see attachment. One LED was blinking, (PS2 attached) keyboard
> > didn't react anymore and I had to reboot my machine.
> > 
> > I couldn't capture the whole dump, the crash didn't made it to the log
> > on disk, so I only have this screenshot. It's the first time I see this
> > crash with any kernel. I did update to 3.3.2 yesterday, but maybe this
> > is unrelated.
> > 
> > The crash looks like the power_supply_core/led wants to send some event
> > and then things goes awry.
> 
> This looks like a delayed work item triggering at a wrong time.
> 
> I guess that the leds' suspend forgets to cancel its delayed work itmes which
> then may be started during system resume.

just resumed my machine again and same crash. again I needed to reboot
my machine. I never had these problems with 3.2.x kernels.

> 
> Thanks,
> Rafael



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