linux-kernel - Re: kernel BUG at fs/btrfs/extent-tree.c:1353

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Date:	Fri, 23 Jul 2010 07:14:55 -0400
From:	Bob Copeland <me@...copeland.com>
To:	Johannes Hirte <johannes.hirte@....tu-ilmenau.de>
Cc:	miaox@...fujitsu.com, Dave Chinner <david@...morbit.com>,
	Chris Mason <chris.mason@...cle.com>,
	linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org,
	zheng.yan@...cle.com, Jens Axboe <axboe@...nel.dk>,
	linux-fsdevel@...r.kernel.org
Subject: Re: kernel BUG at fs/btrfs/extent-tree.c:1353

On Thu, Jul 22, 2010 at 2:07 PM, Johannes Hirte
<johannes.hirte@....tu-ilmenau.de> wrote:
>> Is there anything wrong with your disks or memory?
>> Sometimes the bad memory can break the filesystem. I have met this kind of
>> problem some time ago.
>
> I don't think that's the case. I've checked the RAM with memtest86+ and got no
> errors. I got the errors with two different disks, the first one with btrfs the
> second one now with XFS. Before changing to the second disk, I've run
> badblocks on it to be sure it has no errors.

You might also try kmemcheck.  There's a good chance that a bug
that scribbles random memory shows up as FS corruption.  I have had
ext4 corruption due to an inotify bug, which kmemcheck found on the
first try.

-- 
Bob Copeland %% www.bobcopeland.com
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