mdns: fix crash after init if no memory for task

mdns init first starts timer task, then starts service task. if service task failed to be created, timer task needs to be stopped too.
fixed https://ezredmine.espressif.cn:8765/issues/28466

diff --git a/components/mdns/mdns.c b/components/mdns/mdns.c
index c77c9443fa4b1924fa352f0ea5215fd86c626efd..1626ffaeb80e0b13708b5a937ea659b96f8e0f5c 100644 (file)
--- a/components/mdns/mdns.c
+++ b/components/mdns/mdns.c
@@ -3993,7 +3993,10 @@ static esp_err_t _mdns_service_task_start()
     if (!_mdns_service_task_handle) {
         xTaskCreatePinnedToCore(_mdns_service_task, "mdns", MDNS_SERVICE_STACK_DEPTH, NULL, 1, (TaskHandle_t * const)(&_mdns_service_task_handle), 0);
         if (!_mdns_service_task_handle) {
+            _mdns_stop_timer();
             MDNS_SERVICE_UNLOCK();
+            vSemaphoreDelete(_mdns_service_semaphore);
+            _mdns_service_semaphore = NULL;
             return ESP_FAIL;
         }
     }
@@ -4012,6 +4015,8 @@ static esp_err_t _mdns_service_task_stop()
     MDNS_SERVICE_LOCK();
     _mdns_stop_timer();
     MDNS_SERVICE_UNLOCK();
+    vSemaphoreDelete(_mdns_service_semaphore);
+    _mdns_service_semaphore = NULL;
     if (_mdns_service_task_handle) {
         mdns_action_t action;
         mdns_action_t * a = &action;