ftrace/perf_event leak

Commit Message

Peter Zijlstra Sept. 1, 2010, 11:02 a.m. UTC

None

Patch

Index: linux-2.6/kernel/trace/trace_event_perf.c
===================================================================
--- linux-2.6.orig/kernel/trace/trace_event_perf.c
+++ linux-2.6/kernel/trace/trace_event_perf.c
@@ -91,6 +91,8 @@  int perf_trace_init(struct perf_event *p
 		    tp_event->class && tp_event->class->reg &&
 		    try_module_get(tp_event->mod)) {
 			ret = perf_trace_event_init(tp_event, p_event);
+			if (ret)
+				module_put(tp_event->mod);
 			break;
 		}
 	}
@@ -147,6 +149,7 @@  void perf_trace_destroy(struct perf_even
 		}
 	}
 out:
+	module_put(tp_event->mod);
 	mutex_unlock(&event_mutex);
 }