From 287467b81b17bf0e69e1b927a495fa99b5f9ac17 Mon Sep 17 00:00:00 2001
From: anjiahao <anjiahao@xiaomi.com>
Date: Wed, 14 Sep 2022 16:50:38 +0800
Subject: [PATCH] netdb: Add return check in rexec_af

Signed-off-by: anjiahao <anjiahao@xiaomi.com>
---
 libs/libc/netdb/lib_rexec.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libs/libc/netdb/lib_rexec.c b/libs/libc/netdb/lib_rexec.c
index 2ceed200dd..00f69ce369 100644
--- a/libs/libc/netdb/lib_rexec.c
+++ b/libs/libc/netdb/lib_rexec.c
@@ -110,7 +110,11 @@ int rexec_af(FAR char **ahost, int inport, FAR const char *user,
 
   /* ignore second connection(fd2p always is NULL) */
 
-  write(sock, "", 1);
+  ret = write(sock, "", 1);
+  if (ret < 0)
+    {
+      goto conn_out;
+    }
 
   /* Send username */