From c11c1c6be889e19a4a81de804b105ce6012ee1f8 Mon Sep 17 00:00:00 2001
From: Jaswinder Singh Rajput <jaswinder@kernel.org>
Date: Wed, 18 Mar 2009 22:18:56 +0530
Subject: [PATCH] --- yaml --- r: 140982 b: refs/heads/master c:
 09933a108e6730a464a1ab676c9decc11aee0edc h: refs/heads/master v: v3

---
 [refs]                    | 2 +-
 trunk/kernel/tracepoint.c | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 16016dd88696..3c66a7b892b9 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 490362003457f8d387f6f6e73e3a7efbf56c3314
+refs/heads/master: 09933a108e6730a464a1ab676c9decc11aee0edc
diff --git a/trunk/kernel/tracepoint.c b/trunk/kernel/tracepoint.c
index 79602740bbb5..adf28734fe2d 100644
--- a/trunk/kernel/tracepoint.c
+++ b/trunk/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);