add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/kernel/trace/trace_probe.h
..
..
@@ -301,7 +301,7 @@
301
301
 {
302
302
 	struct trace_probe_event *tpe = trace_probe_event_from_call(call);
303
303
 
304
-	return list_first_entry(&tpe->probes, struct trace_probe, list);
304
+	return list_first_entry_or_null(&tpe->probes, struct trace_probe, list);
305
305
 }
306
306
 
307
307
 static inline struct list_head *trace_probe_probe_list(struct trace_probe *tp)