row0mysql.c:

  Backport from 4.0: Fix corruption of ON DELETE CASCADE in lock wait timeout

innobase/row/row0mysql.c

@@ -1012,10 +1012,25 @@ row_update_cascade_for_mysql(
 
 	err = trx->error_state;
 
+	/* Note that the cascade node is a subnode of another InnoDB
+	query graph node. We do a normal lock wait in this node, but
+	all errors are handled by the parent node. */
+
 	if (err == DB_LOCK_WAIT) {
+		/* Handle lock wait here */
+	
 		que_thr_stop_for_mysql(thr);
 
-		row_mysql_handle_errors(&err, trx, thr, NULL);
+		srv_suspend_mysql_thread(thr);
+
+		/* Note that a lock wait may also end in a lock wait timeout */
+
+		if (trx->error_state != DB_SUCCESS) {
+
+			return(trx->error_state);
+		}
+
+		/* Retry operation after a normal lock wait */
 		
 		goto run_again;
 	}