add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/hv/connection.c
..
..
@@ -305,6 +305,10 @@
305
305
  */
306
306
 struct vmbus_channel *relid2channel(u32 relid)
307
307
 {
308
+	if (vmbus_connection.channels == NULL) {
309
+		pr_warn_once("relid2channel: relid=%d: No channels mapped!\n", relid);
310
+		return NULL;
311
+	}
308
312
 	if (WARN_ON(relid >= MAX_CHANNEL_RELIDS))
309
313
 		return NULL;
310
314
 	return READ_ONCE(vmbus_connection.channels[relid]);