| Message ID | 20230621144744.1580-2-jack@suse.cz |
|---|---|
| State | New |
| Headers | show |
| Series | fs: Fixup bdev_mark_dead callbacks for ext4 and xfs | expand |
On Wed, Jun 21, 2023 at 04:47:43PM +0200, Jan Kara wrote: > xfs_bdev_mark_dead() passes bdev->bd_holder to ext4_force_shutdown() > instead of bdev->bd_super leading to crashes. Fix it. xfs_bdev_mark_dead is only called for the log and RT devices, for which the mp is passed as holder to blkdev_get_by_path. bd_super won't be set for those devices, so this patch will introduce a crash and not fix one.
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index d910b141d52e..3ab188a6fba1 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -381,7 +381,7 @@ static void xfs_bdev_mark_dead( struct block_device *bdev) { - xfs_force_shutdown(bdev->bd_holder, SHUTDOWN_DEVICE_REMOVED); + xfs_force_shutdown(XFS_M(bdev->bd_super), SHUTDOWN_DEVICE_REMOVED); } static const struct blk_holder_ops xfs_holder_ops = {
xfs_bdev_mark_dead() passes bdev->bd_holder to ext4_force_shutdown() instead of bdev->bd_super leading to crashes. Fix it. Fixes: 8067ca1dcdfc ("xfs: wire up the ->mark_dead holder operation for log and RT devices") Signed-off-by: Jan Kara <jack@suse.cz> --- fs/xfs/xfs_super.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)