Re: [PATCH v3] generic: test I/O on dm error device

Dave Chinner
2016-03-23T06:02:27Z

On Wed, Mar 23, 2016 at 12:18:34PM +0800, Eryu Guan wrote:
> This is a test that performs simple I/O on dm error device, which
> returns EIO on all I/O request.
>
> This is motivated by an ext4 bug that crashes kernel on error path when
> trying to update atime. Following kernel patch should fix the issue
>
> ext4: fix NULL pointer dereference in ext4_mark_inode_dirty()
>
> Signed-off-by: Eryu Guan <eguan@redhat.com>
> ---
>
> v3:
> - mkfs on SCRATCH_DEV by calling _scratch_mkfs, instead of _mkfs_dev on
> DMERROR_DEV, which fails on XFS without "-f" option

Thanks, works fine now!

Cheers,

Dave.
--
Dave Chinner
david@fromorbit.com