Re: Oops when shutting down laptop

[Andrew Morton <akpm@osdl.org>]

Kristian Grønfeldt Sørensen <kriller@vkr.dk> wrote:
>
> My laptop oops'es in the final phase of shutdown. It started this
>  Monday. I don't remember having done anything particular with respect to
>  the kernel around that time. It only happens when going to runlevel 0 -
>  a reboot does not result in an oops.
> 
>  Until yesterday i used kernel 2.6.13-rc3, but i have now compiled
>  2.6.13-rc5 with some debugging support. However the problem persists.
> 
>  Since the oops happens so late in the shutdown-sequence, that all
>  filesystems has been unmounted, i am unable to capture the oops on the
>  disc, but a picture of the oops is available at
>  http://www.vkr.dk/~kriller/oops.jpg . (Sorry for not writing the oops in
>  this mail).
> 
>  I tried to remove all modules except speedstep_centrino, freqtable,
>  processor and ipv6 (reported as being in use),  before calling poweroff,
>  but with no change.

We've been busily reverting new power management patches and it's likely
that we fixed this one in the past day or so.  So please test 2.6.13-rc6
when it comes out, or 2.6.13-rc5-git3 which is about three hours away,
thanks.

If it still happens please add the below patch so we can work out the
offending device.  Or apply it anyway - we may have a buggy driver which
will just bite us again later.

Thanks.

--- devel/drivers/base/power/suspend.c~a	2005-08-04 23:06:27.000000000 -0700
+++ devel-akpm/drivers/base/power/suspend.c	2005-08-04 23:08:06.000000000 -0700
@@ -92,6 +92,8 @@ int device_suspend(pm_message_t state)
 		get_device(dev);
 		up(&dpm_list_sem);
 
+		printk("Suspending device %s\n", kobject_name(&dev->kobj));
+
 		error = suspend_device(dev, state);
 
 		down(&dpm_list_sem);
_