From d75091471255c7f510b0ca9429703d50ac5205e2 Mon Sep 17 00:00:00 2001
From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Wed, 20 Mar 2013 14:02:38 -0400
Subject: [PATCH] tracepoint: Don't add NULL probes

Reported-by: Sahara <keun-o.park@windriver.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---
 liblttng-ust/tracepoint.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/liblttng-ust/tracepoint.c b/liblttng-ust/tracepoint.c
index 7de56ca0..d7293dab 100644
--- a/liblttng-ust/tracepoint.c
+++ b/liblttng-ust/tracepoint.c
@@ -143,8 +143,10 @@ tracepoint_entry_add_probe(struct tracepoint_entry *entry,
 	int nr_probes = 0;
 	struct tracepoint_probe *old, *new;
 
-	WARN_ON(!probe);
-
+	if (!probe) {
+		WARN_ON(1);
+		return ERR_PTR(-EINVAL);
+	}
 	debug_print_probes(entry);
 	old = entry->probes;
 	if (old) {
-- 
2.34.1