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Message-ID: <47CF4801.80307@s5r6.in-berlin.de>
Date: Thu, 06 Mar 2008 02:25:21 +0100
From: Stefan Richter <stefanr@...6.in-berlin.de>
To: Jarod Wilson <jwilson@...hat.com>
CC: linux1394-devel@...ts.sourceforge.net,
linux-kernel@...r.kernel.org,
Kristian Høgsberg <krh@...planet.net>
Subject: Re: [PATCH update] firewire: reread config ROM when device reset
the bus
I wrote:
> I wrote:
>> When I power the PC down there are lots of messages scrolling by
>> which look somewhat like lockdep spew. I can't reproduce this merely by
>> module unloading though. So don't put this patch into production yet.
>
> /...a few hundreds reboots later.../
>
> No, it is not this patch. It is something else. And whatever it is, it
> is already present in 2.6.25-rc3.
>
> To reproduce it, I need to plug an SBP-2 device in and out, then shut
> the machine down (e.g. shutdown -h now, whereas shutdown -r now does not
> seem to trigger the bug).
...
> I am now gradually removing debug options from the kernel to see which
> debug facility is making the fuzz...
It is CONFIG_PROVE_LOCKING (Lock debugging: prove locking correctness).
At the moment when the machine powers itself off.
What a waste of time.
--
Stefan Richter
-=====-==--- --== --==-
http://arcgraph.de/sr/
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