From a2ce01ecc4fe7d51f965beff26229f22fd2514f2 Mon Sep 17 00:00:00 2001
From: Remi Gacogne <remi.gacogne@powerdns.com>
Date: Mon, 19 Jul 2021 18:06:05 +0200
Subject: [PATCH] dnsdist: Properly close the cross-connections pipes in case
 of error

---
 pdns/dnsdist-tcp.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pdns/dnsdist-tcp.cc b/pdns/dnsdist-tcp.cc
index 7673eaacc6..4e0fdec163 100644
--- a/pdns/dnsdist-tcp.cc
+++ b/pdns/dnsdist-tcp.cc
@@ -178,6 +178,8 @@ void TCPClientCollection::addTCPClientThread()
 
     if (d_numthreads >= d_tcpclientthreads.size()) {
       vinfolog("Adding a new TCP client thread would exceed the vector size (%d/%d), skipping. Consider increasing the maximum amount of TCP client threads with setMaxTCPClientThreads() in the configuration.", d_numthreads.load(), d_tcpclientthreads.size());
+      close(crossProtocolFDs[0]);
+      close(crossProtocolFDs[1]);
       close(pipefds[0]);
       close(pipefds[1]);
       return;
-- 
2.47.2