From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 18 Feb 2020 00:40:47 +0000 (-0500)
Subject: Fix: relayd: live: unchecked return value when opening relay socket
X-Git-Tag: v2.13.0-rc1~762
X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=commitdiff_plain;h=d546eeec57f3d23255e55d6d7384ab825bae8218

Fix: relayd: live: unchecked return value when opening relay socket

fd_tracker_open_unsuspendable_fd may fail because the underlying
socket() call fails or there may be too many open file descriptors at
the time of the call. In both cases, these errors must be logged and
handled.

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Change-Id: I3205896a5e8c83ceba02005a2b73f9466d26427c
---

diff --git a/src/bin/lttng-relayd/live.c b/src/bin/lttng-relayd/live.c
index f28b9c66f..3ddafe2a1 100644
--- a/src/bin/lttng-relayd/live.c
+++ b/src/bin/lttng-relayd/live.c
@@ -561,7 +561,11 @@ struct lttcomm_sock *init_socket(struct lttng_uri *uri, const char *name)
 	ret = fd_tracker_open_unsuspendable_fd(the_fd_tracker, &sock_fd,
 			(const char **) (formated_name ? &formated_name : NULL),
 			1, create_sock, sock);
-	free(formated_name);
+	if (ret) {
+		PERROR("Failed to create \"%s\" socket",
+				formated_name ?: "Unknown");
+		goto error;
+	}
 	DBG("Listening on %s socket %d", name, sock->fd);
 
 	ret = sock->ops->bind(sock);
@@ -576,12 +580,14 @@ struct lttcomm_sock *init_socket(struct lttng_uri *uri, const char *name)
 
 	}
 
+	free(formated_name);
 	return sock;
 
 error:
 	if (sock) {
 		lttcomm_destroy_sock(sock);
 	}
+	free(formated_name);
 	return NULL;
 }