diff options
Diffstat (limited to 'block/blk-map.c')
| -rw-r--r-- | block/blk-map.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/block/blk-map.c b/block/blk-map.c index 4849fa36161e..2990447f45e9 100644 --- a/block/blk-map.c +++ b/block/blk-map.c @@ -217,8 +217,14 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq, return PTR_ERR(bio); if (bio->bi_size != len) { + /* + * Grab an extra reference to this bio, as bio_unmap_user() + * expects to be able to drop it twice as it happens on the + * normal IO completion path + */ + bio_get(bio); bio_endio(bio, 0); - bio_unmap_user(bio); + __blk_rq_unmap_user(bio); return -EINVAL; } |