rec: restrict maintenance() callback to worker threads

diff --git a/pdns/pdns_recursor.cc b/pdns/pdns_recursor.cc
index fbd83cdb3c3ad25275c2f84714249609c676efa5..8f059369f66e96b32bf7180bfe136ad45c7378db 100644 (file)
--- a/pdns/pdns_recursor.cc
+++ b/pdns/pdns_recursor.cc
@@ -3556,7 +3556,7 @@ try
         last_carbon = g_now.tv_sec;
       }
     }
-    if (t_pdl != nullptr) {
+    if (worker && t_pdl != nullptr) {
       // lua-dns-script directive is present, call the maintenance callback if needed
       if(g_now.tv_sec - last_lua_maintenance >= luaMaintenanceInterval) {
         t_pdl->maintenance();