From: David Goulet <david.goulet@polymtl.ca>
Date: Thu, 10 Nov 2011 20:16:51 +0000 (-0500)
Subject: Fix NULL dereference in liblttngctl
X-Git-Tag: v2.0-pre15~135
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=a45d55367ba37e6561f709e2397b6d51126fb735;ds=sidebyside

Fix NULL dereference in liblttngctl

Signed-off-by: David Goulet <david.goulet@polymtl.ca>
---

diff --git a/liblttngctl/lttngctl.c b/liblttngctl/lttngctl.c
index a1e577b2b..d0ba52bbf 100644
--- a/liblttngctl/lttngctl.c
+++ b/liblttngctl/lttngctl.c
@@ -335,7 +335,9 @@ static int ask_sessiond(struct lttcomm_session_msg *lsm, void **buf)
 	size = llm.data_size;
 	if (size == 0) {
 		/* If client free with size 0 */
-		*buf = NULL;
+		if (buf != NULL) {
+			*buf = NULL;
+		}
 		ret = 0;
 		goto end;
 	}