diff --git a/block/blk-map.c b/block/blk-map.c
index 81cba3af4e9c..0022710664bc 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -236,6 +236,7 @@ static int bio_copy_user_iov(struct request *rq, struct rq_map_data *map_data,
 		ret = bio_copy_from_iter(bio, &iter2);
 		if (ret)
 			goto cleanup;
+		iov_iter_advance(iter, bio->bi_iter.bi_size);
 	} else {
 		if (bmd->is_our_pages)
 			zero_fill_bio(bio);