--- /opt/kernel/linux-2.4.8-pre5/fs/buffer.c	Tue Aug  7 10:28:50 2001
+++ fs/buffer.c	Tue Aug  7 22:17:51 2001
@@ -2581,13 +2472,17 @@
 
 			spin_lock(&lru_list_lock);
 			bh = lru_list[BUF_DIRTY];
+			if (!bh)
+				break;
 			if (!time_before(jiffies, bh->b_flushtime))
 				continue;
 			spin_unlock(&lru_list_lock);
 		}
 		run_task_queue(&tq_disk);
-		return 0;
+		break;
 	}
+
+	return 0;
 }
 
 int block_sync_page(struct page *page)