From 07204789bcaa8223fd38a9cf3f1f76e5655acbdd Mon Sep 17 00:00:00 2001
From: Max Romanov <max.romanov@nginx.com>
Date: Fri, 27 Apr 2018 20:32:50 +0300
Subject: [PATCH] Eliminating possible NULL pointer dereference.

Found by Coverity (CID 276138).
---
 src/nxt_router.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/nxt_router.c b/src/nxt_router.c
index 48ad55cd..099aa339 100644
--- a/src/nxt_router.c
+++ b/src/nxt_router.c
@@ -779,7 +779,9 @@ nxt_router_new_port_handler(nxt_task_t *task, nxt_port_recv_msg_t *msg)
 {
     nxt_port_new_port_handler(task, msg);
 
-    if (msg->u.new_port->type == NXT_PROCESS_CONTROLLER) {
+    if (msg->u.new_port != NULL
+        && msg->u.new_port->type == NXT_PROCESS_CONTROLLER)
+    {
         nxt_router_greet_controller(task, msg->u.new_port);
     }