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

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Message-Id: <200807112247.44530.rjw@sisk.pl>
Date:	Fri, 11 Jul 2008 22:47:44 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Pavel Machek <pavel@...e.cz>
Cc:	Soeren Sonnenburg <kernel@....de>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.26-rc7: BUG at kernel/power/snapshot.c:493

On Friday, 11 of July 2008, Pavel Machek wrote:
> On Fri 2008-07-11 22:33:52, Rafael J. Wysocki wrote:
> > On Friday, 11 of July 2008, Pavel Machek wrote:
> > > Hi!
> > > 
> > > > > > Anyone else seeing this? Happened after resuming from s2both (from
> > > > > > disk)...
> > > > > 
> > > > > At what point exactly did it happen?
> > > > 
> > > > I am attaching the full dmesg.
> > > 
> > > Something is seriously wrong here.
> > > 
> > > > usbcore: registered new interface driver usbhid
> > > > usbhid: v2.6:USB HID core driver
> > > > TCP cubic registered
> > > > NET: Registered protocol family 10
> > > > lo: Disabled Privacy Extensions
> > > > Mobile IPv6
> > > > NET: Registered protocol family 17
> > > > NET: Registered protocol family 15
> > > > Using IPI No-Shortcut mode
> > > > RAMDISK: ext2 filesystem found at block 0
> > > > RAMDISK: Loading 2000KiB [1 disk] into ram disk... |./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|./.-.\.|.done.
> 
> (1)
> > > > EXT2-fs warning: checktime reached, running e2fsck is recommended
> (2)
> > > > VFS: Mounted root (ext2 filesystem).
> > > > ------------[ cut here ]------------
> > > > kernel BUG at kernel/power/snapshot.c:493!
> > > > invalid opcode: 0000 [#1] PREEMPT SMP 
> > > > Modules linked in:
> > > 
> > > This is _after_ we mounted filesystems... we should not be resuming at
> > > this point.
> > 
> > This is an initrd, isn't it?
> 
> Does not look like so: it mounted some filesystem at (1), and
> checktime is reached. I thought initrd is read-only RAM disk -- it
> should not reach check time, no?

Yes, it will reach the check time if it's ext2 (which is the case).

Thanks,
Rafael
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