openresty/patches/nginx-1.21.3-reuseport_close_unused_fds.patch

diff --git a/src/core/ngx_connection.c b/src/core/ngx_connection.c
--- a/src/core/ngx_connection.c
+++ b/src/core/ngx_connection.c
@@ -1118,6 +1118,12 @@ ngx_close_listening_sockets(ngx_cycle_t *cycle)
     ls = cycle->listening.elts;
     for (i = 0; i < cycle->listening.nelts; i++) {
 
+#if (NGX_HAVE_REUSEPORT)
+        if (ls[i].fd == (ngx_socket_t) -1) {
+            continue;
+        }
+#endif
+
         c = ls[i].connection;
 
         if (c) {
diff --git a/src/event/ngx_event.c b/src/event/ngx_event.c
--- a/src/event/ngx_event.c
+++ b/src/event/ngx_event.c
@@ -775,6 +775,18 @@ ngx_event_process_init(ngx_cycle_t *cycle)
 
 #if (NGX_HAVE_REUSEPORT)
         if (ls[i].reuseport && ls[i].worker != ngx_worker) {
+            ngx_log_debug2(NGX_LOG_DEBUG_CORE, cycle->log, 0,
+                           "closing unused fd:%d listening on %V",
+                           ls[i].fd, &ls[i].addr_text);
+
+            if (ngx_close_socket(ls[i].fd) == -1) {
+                ngx_log_error(NGX_LOG_EMERG, cycle->log, ngx_socket_errno,
+                              ngx_close_socket_n " %V failed",
+                              &ls[i].addr_text);
+            }
+
+            ls[i].fd = (ngx_socket_t) -1;
+
             continue;
         }
 #endif