dm mpath: fix leak of dm_mpath_io structure in blk-mq .queue_rq error path

[uclinux-h8/linux.git] / drivers / md / dm-mpath.c

diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 6395347..eff7bdd 100644 (file)
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -429,9 +429,11 @@ static int __multipath_map(struct dm_target *ti, struct request *clone,
                /* blk-mq request-based interface */
                *__clone = blk_get_request(bdev_get_queue(bdev),
                                           rq_data_dir(rq), GFP_ATOMIC);
-               if (IS_ERR(*__clone))
+               if (IS_ERR(*__clone)) {
                        /* ENOMEM, requeue */
+                       clear_mapinfo(m, map_context);
                        return r;
+               }
                (*__clone)->bio = (*__clone)->biotail = NULL;
                (*__clone)->rq_disk = bdev->bd_disk;
                (*__clone)->cmd_flags |= REQ_FAILFAST_TRANSPORT;