linux-kernel - Re: [possible regression] 2.6.22 reiserfs/libata sporadically hangs on resume from hibernation

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Message-ID: <20070630230302.GA1855@elf.ucw.cz>
Date:	Sun, 1 Jul 2007 01:03:02 +0200
From:	Pavel Machek <pavel@....cz>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Andrey Borzenkov <arvidjaar@...l.ru>,
	michal.k.k.piotrowski@...il.com, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [possible regression] 2.6.22 reiserfs/libata sporadically hangs on resume from hibernation

Hi!

> > ACPI Error (event-0305): No installed handler for fixed event [00000002 
> > 20070125]
> > 
> > And SysRq was functioning.
> 
> That probably means that there's a deadlock somewhere in there.
> 
> > Unfortunately I do not have serial console so I  
> > copy manually stacks from several last screens of output; I have tried to 
> > make a photo but right now my kbluetooth is refusing to work at all so I 
> > cannot transfer them :( (but I suspect quality would be too bad anyway)
> > 
> > laptop_mode D
> > 	io_schedule+0xe/0x20
> 
> Looks suspicious to me.  Can you identify what line of code this points to?

Actually, I see laptop_mode being locked. laptop_mode does disk
spindowns, which is somehow unusual. Does it happen w/o laptop mode?
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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