From 145c4143ac36b9f1d8c312cadcf960b416635194 Mon Sep 17 00:00:00 2001
From: Nick Peng <pymumu@gmail.com>
Date: Mon, 4 Mar 2024 21:55:46 +0800
Subject: [PATCH] dns_server: fix race issue regarding rcode.

---
 src/dns_server.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/dns_server.c b/src/dns_server.c
index f16fd99092..1a894b4890 100644
--- a/src/dns_server.c
+++ b/src/dns_server.c
@@ -2622,6 +2622,10 @@ static int _dns_server_request_complete_with_all_IPs(struct dns_request *request
 				 request->ip_addr[9], request->ip_addr[10], request->ip_addr[11], request->ip_addr[12],
 				 request->ip_addr[13], request->ip_addr[14], request->ip_addr[15]);
 		}
+
+		if (request->rcode != DNS_RC_NOERROR) {
+			request->rcode = DNS_RC_NOERROR;
+		}
 	}
 
 out:
@@ -7826,7 +7830,6 @@ static int _dns_server_tcp_process_one_request(struct dns_server_conn_tcp_client
 					goto errout;
 				}
 
-
 				if (http_decode_data == NULL) {
 					http_decode_data = malloc(DNS_IN_PACKSIZE);
 					if (http_decode_data == NULL) {