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Date: Wed, 30 Dec 2009 14:01:20 -0500
From: tytso@mit.edu
To: "Rafael J. Wysocki" <rjw@sisk.pl>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Kernel Testers List <kernel-testers@vger.kernel.org>,
       Dmitry Torokhov <dmitry.torokhov@gmail.com>,
       Gene Heskett <gene.heskett@verizon.net>, okias <d.okias@gmail.com>
Subject: Re: [Bug #14936] kernel BUG at fs/ext4/inode.c:1063 if attempted
 to use non-ext4 partition with ext4
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On Tue, Dec 29, 2009 at 11:57:12AM -0500, tytso@MIT.EDU wrote:
> On Tue, Dec 29, 2009 at 04:10:01PM +0100, Rafael J. Wysocki wrote:
> > 
> > Bug-Entry	: http://bugzilla.kernel.org/show_bug.cgi?id=14936
> > Subject		: kernel BUG at fs/ext4/inode.c:1063 if attempted to use non-ext4 partition with ext4
> > Submitter	: Gene Heskett <gene.heskett@verizon.net>
> > Date		: 2009-12-26 14:13 (4 days old)
> > References	: http://marc.info/?l=linux-kernel&m=126183682330809&w=4
> > 		  http://marc.info/?l=linux-kernel&m=126169372613898&w=4
> 
> Bisected to commit d21cd8, and reverting this commit seems to fix the
> problem.  The problem appeared between -rc1 and -rc2.  It was a fix
> that was pushed as part of a quota/ext4 fixes.  For more information:
> 
> http://marc.info/?l=linux-ext4&m=126197233225936&w=2
> 
> I will take a look at this to see if I can find an easy fix;
> otherwise, we'll probably want to revert commit d21cd8 before -rc3.

I'm working on a fix, and have a proposed patch.  See the thread on
linux-ext4 here:

http://marc.info/?l=linux-kernel&m=126219515024315&w=2

This patch also fixes the dq_claim_space kerneloops problem as
well....

						- Ted