block: Always check length of all iov entries in blk_rq_map_user_iov()

Even after commit 5478755 ("block: check for proper length of iov entries earlier ...") we still won't check for zero-length entries after an unaligned entry. Remove the break-statement, so all entries are checked. Signed-off-by: Ben Hutchings <[email protected]> Cc: [email protected] Signed-off-by: Jens Axboe <[email protected]>
oleg-nesterov · Nov 13, 2011 · 6b76106 · 6b76106
1 parent 1937335
commit 6b76106
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/block/blk-map.c b/block/blk-map.c
@@ -204,10 +204,11 @@ int blk_rq_map_user_iov(struct request_queue *q, struct request *rq,
 		if (!iov[i].iov_len)
 			return -EINVAL;
 
-		if (uaddr & queue_dma_alignment(q)) {
+		/*
+		 * Keep going so we check length of all segments
+		 */
+		if (uaddr & queue_dma_alignment(q))
 			unaligned = 1;
-			break;
-		}
 	}
 
 	if (unaligned || (q->dma_pad_mask & len) || map_data)