From cffc29927b45d4c36490d4e1b42f4df0761f439a Mon Sep 17 00:00:00 2001
From: surendrasignalwire
 <56929670+surendrasignalwire@users.noreply.github.com>
Date: Fri, 10 Jul 2020 02:56:42 +0530
Subject: [PATCH] [Core] Fix crash while writing text_frame in conference

---
 src/switch_core_media.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/switch_core_media.c b/src/switch_core_media.c
index 810306a91d..674c5b92f9 100644
--- a/src/switch_core_media.c
+++ b/src/switch_core_media.c
@@ -15502,6 +15502,11 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_write_text_frame(switch_core
 
 	t_engine = &smh->engines[SWITCH_MEDIA_TYPE_TEXT];
 
+	if (!t_engine || !t_engine->tf) {
+		switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_ERROR, "text engine not available for processing\n");
+		switch_goto_status(SWITCH_STATUS_BREAK, done);
+	}
+
 	if (!is_msrp && switch_channel_test_cap(session->channel, CC_RTP_RTT)) {
 
 		if (frame) {