2.6.32-rc3 kernel BUG when unmounting quota offed xfs

[Christoph Hellwig]

On Thu, Oct 08, 2009 at 03:54:19PM +0900, Utako Kusaka wrote:
> Hi,
> 
> XFS file system segfaults in 2.6.32-rc3 and 2.6.31.2.
> This problem does not occur with 2.6.30-rc5.
> xfsprogs version is 3.0.3.
> 
> Testcase is:
> # mount -t xfs -o uquota /dev/sda7 mpnt2
> # xfs_quota -x -c off
> # umount /dev/sda7
> Segmentation fault

Thanks a lot Utako-san, I can reproduce the above testcase on latest
mainline.  I'll come back to you with a patch soon.