linux-kernel - Re: 2.6.18 ext3 panic.

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Date:	Mon, 2 Oct 2006 23:19:45 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Eric Sandeen <sandeen@...deen.net>
Cc:	Dave Jones <davej@...hat.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	esandeen@...hat.com, Badari Pulavarty <pbadari@...ibm.com>,
	Jan Kara <jack@....cz>
Subject: Re: 2.6.18 ext3 panic.

On Tue, 03 Oct 2006 00:43:01 -0500
Eric Sandeen <sandeen@...deen.net> wrote:

> Dave Jones wrote:
> 
> > So I managed to reproduce it with an 'fsx foo' and a
> > 'fsstress -d . -r -n 100000 -p 20 -r'. This time I grabbed it from
> > a vanilla 2.6.18 with none of the Fedora patches..
> > 
> > I'll give 2.6.18-git a try next.
> > 
> > 		Dave
> > 
> > ----------- [cut here ] --------- [please bite here ] ---------
> > Kernel BUG at fs/buffer.c:2791
> 
> I had thought/hoped that this was fixed by Jan's patch at 
> http://lkml.org/lkml/2006/9/7/236 from the thread started at 
> http://lkml.org/lkml/2006/9/1/149, but it seems maybe not.  Dave hit this bug 
> first by going through that new codepath....

Yes, Jan's patch is supposed to fix that !buffer_mapped() assertion.  iirc,
Badari was hitting that BUG and was able to confirm that Jan's patch
(3998b9301d3d55be8373add22b6bc5e11c1d9b71 in post-2.6.18 mainline) fixed
it.
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