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 c1667235d1211c82faa58aba1c9071eafa545683..98071f9d732005dafe5f209ce54ef09b16d62427 100644 (file)
--- a/bin/named/server.c
+++ b/bin/named/server.c
@@ -10128,7 +10128,7 @@ named_server_destroy(named_server_t **serverp) {
 
 static void
 fatal(named_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