From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Fri, 4 Sep 2015 05:16:52 +0000 (-0400)
Subject: Fix: filter validator use after free
X-Git-Tag: v2.8.0-rc1~81
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=5e13eb3cd47abc717bb2e02dce5d26dc94281134;p=lttng-modules.git

Fix: filter validator use after free

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/lttng-filter-validator.c b/lttng-filter-validator.c
index a996945d..446fc41b 100644
--- a/lttng-filter-validator.c
+++ b/lttng-filter-validator.c
@@ -104,8 +104,9 @@ int merge_point_add_check(struct mp_table *mp_table, unsigned long target_pc,
 				target_pc);
 			return -EINVAL;
 		}
+	} else {
+		hlist_add_head(&mp_node->node, head);
 	}
-	hlist_add_head(&mp_node->node, head);
 	return 0;
 }