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>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index b89c548ec3f8..e24143cc2040 100644
--- 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);