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Date: Tue, 21 Jun 2011 13:45:56 +0100
From: Al Viro <viro@ZenIV.linux.org.uk>
To: Greg Dietsche <greg@gregd.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        linux-fsdevel@vger.kernel.org
Subject: Re: 3.0 rc3 bug & warning fs/inode.c && fs/fs-writeback.c
Message-ID: <20110621124556.GZ11521@ZenIV.linux.org.uk>
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On Tue, Jun 21, 2011 at 07:25:52AM -0500, Greg Dietsche wrote:
> from the just missed rc4 department:
> I recieved this BUG last night on my laptop and it was shortly
> followed by a warning from the kernel. I doubt that I can reproduce
> this. It happened under a light load. I was doing some emailing
> using thunderbird (er.... icedove.....). let me know if there's
> anything I can do to help debug or if there's more info I can get
> that would help you figure out what went wrong.

Which filesystems had been mounted?  That looks like a stray pointer
to struct inode (i.e. outliving the inode eviction on final iput());
might be the one fixed by commit 50338b889dc504c69e0cb316ac92d1b9e51f3c8a,
might be something else...