From 91be4b1f3cdb22e591d9255c9727e0ccb9ad64a9 Mon Sep 17 00:00:00 2001
From: Richard Fuchs <rfuchs@sipwise.com>
Date: Tue, 23 Nov 2021 10:27:16 -0500
Subject: [PATCH] TT#14008 fix possible segfault

Not only check for the presence of a sink, but also check for a sink FD.
Treat a sink without an FD as if there is no sink.

Closes #1401

Change-Id: I04c0be33f8cae39399674ca0a87185a729daa843
(cherry picked from commit 179b7edec153ebeebd8385b2d59c6a117cff5d2d)
---
 daemon/media_socket.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/daemon/media_socket.c b/daemon/media_socket.c
index 3311db558..991856756 100644
--- a/daemon/media_socket.c
+++ b/daemon/media_socket.c
@@ -1258,7 +1258,7 @@ static const char *kernelize_one(struct rtpengine_target_info *reti, GQueue *out
 
 output:
 	// output section
-	if (non_forwarding) // also applies to sink == NULL
+	if (non_forwarding || !sink || !sink->selected_sfd)
 		return NULL; // no output
 	if (!PS_ISSET(sink, FILLED))
 		return NULL;