Prevent crash on dst initialization failure

server might be created, but not yet fully initialized, when fatal
function is called. Check both server and task before attaching
exclusive task.

(cherry picked from commit c5e7152cf04f75d0fe00163f076f4cc3cafce259)

diff --git a/bin/named/server.c b/bin/named/server.c
index e752aa71a99fc382d97f6b4c1d70aada574fed3b..9739206ae77d66879082a187106573d2a1d914ec 100644 (file)
--- a/bin/named/server.c
+++ b/bin/named/server.c
@@ -9299,7 +9299,7 @@ ns_server_destroy(ns_server_t **serverp) {
 
 static void
 fatal(ns_server_t *server, const char *msg, isc_result_t result) {
-       if (server != NULL) {
+       if (server != NULL && server->task != NULL) {
                /*
                 * Prevent races between the OpenSSL on_exit registered
                 * function and any other OpenSSL calls from other tasks