linux-kernel - Re: 2.6.26-rc7: BUG at kernel/power/snapshot.c:493

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Message-Id: <200806272135.44624.rjw@sisk.pl>
Date:	Fri, 27 Jun 2008 21:35:44 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Soeren Sonnenburg <kernel@....de>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.26-rc7: BUG at kernel/power/snapshot.c:493

On Friday, 27 of June 2008, Soeren Sonnenburg wrote:
> On Fri, 2008-06-27 at 19:07 +0200, Rafael J. Wysocki wrote:
> > On Friday, 27 of June 2008, Soeren Sonnenburg wrote:
> > > Dear all,
> > > 
> > > Anyone else seeing this? Happened after resuming from s2both (from
> > > disk)...
> > 
> > At what point exactly did it happen?
> 
> I am attaching the full dmesg.

This looks like userland resume trying to feed invalid image metadata to the
kernel through /dev/snapshot.

Hard to say why this happened, though.  It looks like the swap header of the
resume device wasn't restored correctly after reading the image and that would
be a user space bug.

Thanks,
Rafael
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