From f74ac1b841b0aae73969debaed0444f0ecb03dba Mon Sep 17 00:00:00 2001
From: Martin George <marting@netapp.com>
Date: Mon, 15 Nov 2021 16:00:47 +0530
Subject: [PATCH] fabrics: fix 'nvme connect' segfault if transport type is
 omitted

Check if the transport type is available before dereferencing
it in discovery_trsvcid().

Fixes: 362c90f ("fabrics: add default port number for NVMe/TCP I/O
controllers")
Signed-off-by: Martin George <marting@netapp.com>
---
 fabrics.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fabrics.c b/fabrics.c
index d691191..adca89b 100644
--- a/fabrics.c
+++ b/fabrics.c
@@ -1070,6 +1070,8 @@ static void set_discovery_kato(struct fabrics_config *cfg)
 
 static void discovery_trsvcid(struct fabrics_config *fabrics_cfg, bool discover)
 {
+	if (!fabrics_cfg->transport)
+		return;
 	if (!strcmp(fabrics_cfg->transport, "tcp")) {
 		if (discover) {
 			/* Default port for NVMe/TCP discovery controllers */
-- 
2.27.0