linux-kernel - Re: 2.6.22.6: kernel BUG at fs/locks.c:171

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Message-Id: <1190036619.4757.8.camel@localhost>
Date:	Mon, 17 Sep 2007 15:43:39 +0200
From:	Soeren Sonnenburg <kernel@....de>
To:	Nick Piggin <nickpiggin@...oo.com.au>
Cc:	linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.22.6: kernel BUG at fs/locks.c:171

On Sun, 2007-09-16 at 18:15 +1000, Nick Piggin wrote:
> On Saturday 15 September 2007 20:22, Soeren Sonnenburg wrote:
> > On Sat, 2007-09-15 at 09:47 +0000, Soeren Sonnenburg wrote:
> 
> > > Memtest did not find anything after 16 passes so I finally stopped
> it
> > > applied your patch and used
> > >
> > > CONFIG_DEBUG_SLAB=y
> > > CONFIG_DEBUG_SLAB_LEAK=y
> > >
> > > and booted into the new kernel.
> > >
> > > A few hours later the machine hung (due to nmi watchdog rebooted),
> so I
[...]
> > > swap_dup: Bad swap file entry 28c8af9d
> 
> Hmm, this is another telltale symptom of either bad hardware
> or a memory scribbling bug.

Since this morning, the machine is running with the dvb driver for that
certain card unloaded...

Anyway you convinced me that it is the bad saa7134_dvb drivers (driving
the asus p7131) fault. As the driver seems huge, I wonder whether there
are a) other config debug options that could aid in debugging b) what
the names of certain io functions are that may cause this...

Thanks a lot!
Soeren
-- 
Sometimes, there's a moment as you're waking, when you become aware of
the real world around you, but you're still dreaming.
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