Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/core

1 files changed, 3 insertions, 0 deletions

diff --git a/kernel/trace/trace_kprobe.c b/kernel/trace/trace_kprobe.c
index 1b79d1c15726..8b27c9849b42 100644
--- a/kernel/trace/trace_kprobe.c
+++ b/kernel/trace/trace_kprobe.c
@@ -925,14 +925,17 @@ static int create_trace_probe(int argc, char **argv)
                         pr_info("Delete command needs an event name.\n");
                         return -EINVAL;
                 }
+                mutex_lock(&probe_lock);
                 tp = find_probe_event(event, group);
                 if (!tp) {
+                        mutex_unlock(&probe_lock);
                         pr_info("Event %s/%s doesn't exist.\n", group, event);
                         return -ENOENT;
                 }
                 /* delete an event */
                 unregister_trace_probe(tp);
                 free_trace_probe(tp);
+                mutex_unlock(&probe_lock);
                 return 0;
         }