1 files changed, 14 insertions, 5 deletions

diff --git a/kernel/trace/trace_event_profile.c b/kernel/trace/trace_event_profile.c
index 7bf2ad65eee5..5b5895afecfe 100644
--- a/kernel/trace/trace_event_profile.c
+++ b/kernel/trace/trace_event_profile.c
@@ -10,21 +10,30 @@
 int ftrace_profile_enable(int event_id)
 {
         struct ftrace_event_call *event;
+        int ret = -EINVAL;
 
+        mutex_lock(&event_mutex);
         list_for_each_entry(event, &ftrace_events, list) {
-                if (event->id == event_id)
-                        return event->profile_enable(event);
+                if (event->id == event_id) {
+                        ret = event->profile_enable(event);
+                        break;
+                }
         }
+        mutex_unlock(&event_mutex);
 
-        return -EINVAL;
+        return ret;
 }
 
 void ftrace_profile_disable(int event_id)
 {
         struct ftrace_event_call *event;
 
+        mutex_lock(&event_mutex);
         list_for_each_entry(event, &ftrace_events, list) {
-                if (event->id == event_id)
-                        return event->profile_disable(event);
+                if (event->id == event_id) {
+                        event->profile_disable(event);
+                        break;
+                }
         }
+        mutex_unlock(&event_mutex);
 }