linux-ext4 - Re: kernel BUG at fs/ext/super.c:428

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Message-ID: <20090114014434.GE14730@mit.edu>
Date:	Tue, 13 Jan 2009 20:44:34 -0500
From:	Theodore Tso <tytso@....edu>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Pallipadi, Venkatesh" <venkatesh.pallipadi@...el.com>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	linux-kernel@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: Re: kernel BUG at fs/ext/super.c:428

On Tue, Jan 13, 2009 at 04:48:42PM -0800, Andrew Morton wrote:
> Well that's not good.  I don't recall us making any changes which
> affect the orphan list handling.  Perhaps "filesystem freeze: add error
> handling of write_super_lockfs/unlockfs", but only indirectly.
> 
> Does Arjan's new async stuff play with filesystems at umount/shutdown
> time?  Don't think so.

Well, Arjan's commit, efaee192: "async: make the final inode deletion
an asynchronous event", does change how inodes get deleted, and this
looks like a race where an inode is getting deleted during the umount.

So I would try reverting commit efaee192 and see if it fixes things
before starting a full bisect...

							- Ted
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