From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 21 Jul 2020 16:51:48 +0000 (-0400)
Subject: Fix: sessiond: wrong variable checked for error code
X-Git-Tag: v2.13.0-rc1~589
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=97a171e11f8fcec6ee66c6c7cc33665f3c1c9a88;ds=sidebyside

Fix: sessiond: wrong variable checked for error code

Coverity reports:
  1430513 Logically dead code

  The indicated dead code may have performed some action; that action
  will never occur.

  In ust_app_open_packets: Code can never be reached because of a
  logical contradiction (CWE-561)

The `open_ret` variable should be checked instead of `ret` after calling
consumer_open_channel_packets.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I49ad2d2b747e29414fee7f0727df1feb343695bb
---

diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
index befbfab32..58be25bbd 100644
--- a/src/bin/lttng-sessiond/ust-app.c
+++ b/src/bin/lttng-sessiond/ust-app.c
@@ -6747,7 +6747,7 @@ enum lttng_error_code ust_app_open_packets(struct ltt_session *session)
 					 * Per-PID buffer and application going
 					 * away.
 					 */
-					if (ret == -LTTNG_ERR_CHAN_NOT_FOUND) {
+					if (open_ret == -LTTNG_ERR_CHAN_NOT_FOUND) {
 						continue;
 					}