linux-kernel - Re: 2.6.30: suspend-to-ram, second s2r wakes up immediately

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Date:	Tue, 16 Jun 2009 19:13:51 +0200
From:	Thomas Meyer <thomas@...3r.de>
To:	Jiri Kosina <jkosina@...e.cz>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Frans Pop <elendil@...net.nl>,
	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Alan Stern <stern@...land.harvard.edu>
Subject: Re: 2.6.30: suspend-to-ram, second s2r wakes up immediately

Am Dienstag, den 16.06.2009, 10:15 +0200 schrieb Jiri Kosina:
> On Mon, 15 Jun 2009, Thomas Meyer wrote:
> 
> > > > As for the mouse itself, I don't know.  I'm not even sure if it's 
> > > > possible at all (CCing Jiri).
> > > The main question is whether the mouse really is generating wakeup event 
> > > even if unused.
> > > Could you please provide usbmon dumps (Documentation/usb/usbmon.txt) from 
> > > the failing suspend session?
> > I tried and usbmon seems to kill my machine. See attached screenshot.
> 
> Unfortunately the trace is far from being complete -- most importantly, 
> the first lines of the oops/BUG are missing. Is there any chance you could 
> either set up a serial console, or choose a smaller console font, to catch 
> the whole thing?

Netconsole was able to catch this:

[ 8689.244202] BUG: unable to handle kernel paging request at ffff880020fb0e80
[ 8689.244235] IP: [<ffffffffa002d47f>] mon_dmapeek+0x68/0x8d [usbmon]
[ 8689.244265] PGD 202063 PUD 206063 PMD 20e001e2 
[ 8689.244293] Oops: 0000 [#1] PREEMPT SMP 
[ 8689.244318] last sysfs file: /sys/devices/system/cpu/cpu1/cache/index2/shared_cpu_map
[ 8689.244329] CPU 0 

That's all.

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