Re: 2.6.18 ext3 panic.

On Mon, Oct 02, 2006 at 11:19:45PM -0700, Andrew Morton wrote:
On Tue, 03 Oct 2006 00:43:01 -0500
Eric Sandeen <sandeen@xxxxxxxxxxx> 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.

Ok, this afternoon I was definitly running a kernel with that patch in it,
and managed to get a trace (It was the one from the top of this thread
that unfortunatly got truncated).

Now, I can't reproduce it on a plain 2.6.18+that patch.
I'll leave the stress test running overnight, and see if anything
falls out in the morning.

Dave

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