diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 2f1bef8c1d88a3557efd1b101ae1b86e5e088d70..bb3d9be3b1b4eecb82ba82f8bc1045e825ff7a75 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1020,8 +1020,9 @@ static int rbd_do_request(struct request *rq,
 	layout->fl_stripe_count = cpu_to_le32(1);
 	layout->fl_object_size = cpu_to_le32(1 << RBD_MAX_OBJ_ORDER);
 	layout->fl_pg_pool = cpu_to_le32(rbd_dev->pool_id);
-	ceph_calc_raw_layout(osdc, layout, snapid, ofs, &len, &bno,
-				req, ops);
+	ret = ceph_calc_raw_layout(osdc, layout, snapid, ofs, &len, &bno,
+				   req, ops);
+	rbd_assert(ret == 0);
 
 	ceph_osdc_build_request(req, ofs, &len,
 				ops,