1 files changed, 7 insertions, 2 deletions

diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c
index 79602740bbb..adf28734fe2 100644
--- a/kernel/tracepoint.c
+++ b/kernel/tracepoint.c
@@ -272,12 +272,17 @@ static void disable_tracepoint(struct tracepoint *elem)
  *
  * Updates the probe callback corresponding to a range of tracepoints.
  */
-void tracepoint_update_probe_range(struct tracepoint *begin,
-        struct tracepoint *end)
+void
+tracepoint_update_probe_range(struct tracepoint *begin, struct tracepoint *end)
 {
         struct tracepoint *iter;
         struct tracepoint_entry *mark_entry;
 
+        if (!begin) {
+                WARN_ON_ONCE(1);
+                return;
+        }
+
         mutex_lock(&tracepoints_mutex);
         for (iter = begin; iter < end; iter++) {
                 mark_entry = get_tracepoint(iter->name);