dm: clear bi_end_io on remapping failure

As a precaution, set bi_end_io to NULL when failing to remap.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index b89c548..e24143c 100644 (file)
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -1016,6 +1016,7 @@ static void __map_bio(struct dm_target *ti, struct bio *clone,
                /*
                 * Store bio_set for cleanup.
                 */
+               clone->bi_end_io = NULL;
                clone->bi_private = md->bs;
                bio_put(clone);
                free_tio(md, tio);