From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Sat, 5 Sep 2015 16:02:10 +0000 (-0400)
Subject: Fix: Possible passing of NULL pointer to memcpy()
X-Git-Tag: v2.8.0-rc1~396
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=b742e3e20470f98be1c1fda6d0c5b3346e19d6e8

Fix: Possible passing of NULL pointer to memcpy()

_cmd_enable_event() will not jump to the error label in case of
memory allocation of the filter bytecode copy. This causes the NULL
return of zmalloc to be used by memcpy() directly.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 860622d00..6237d673e 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -1826,6 +1826,7 @@ static int _cmd_enable_event(struct ltt_session *session,
 				filter_copy = zmalloc(filter_size);
 				if (!filter_copy) {
 					ret = LTTNG_ERR_NOMEM;
+					goto error;
 				}
 				memcpy(filter_copy, filter, filter_size);