X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fnotification-thread-events.c;h=0836620b59262413c43b8cb97addb8e0f468746b;hb=c0e2990d32d1e55c783c7eb3299f23a7ce062270;hp=6d153f16d84cd715205ada63b64c9d1eaadf64cd;hpb=65f649784e948615ec369db9eba40847a75ccaf2;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/notification-thread-events.c b/src/bin/lttng-sessiond/notification-thread-events.c
index 6d153f16d..0836620b5 100644
--- a/src/bin/lttng-sessiond/notification-thread-events.c
+++ b/src/bin/lttng-sessiond/notification-thread-events.c
@@ -1089,6 +1089,7 @@ int notification_thread_client_subscribe(struct notification_client *client,
 	struct notification_client_list *client_list = NULL;
 	struct lttng_condition_list_element *condition_list_element = NULL;
 	struct notification_client_list_element *client_list_element = NULL;
+	struct lttng_trigger_ht_element *trigger_ht_element;
 	enum lttng_notification_channel_status status =
 			LTTNG_NOTIFICATION_CHANNEL_STATUS_OK;
 
@@ -1138,11 +1139,11 @@ int notification_thread_client_subscribe(struct notification_client *client,
 	 * at this point so that conditions that are already TRUE result
 	 * in a notification being sent out.
 	 *
-	 * The client_list's trigger is used without locking the list itself.
-	 * This is correct since the list doesn't own the trigger and the
-	 * object is immutable.
+	 * Note the iteration on all triggers which share an identical
+	 * `condition` than the one to which the client is registering. This is
+	 * done to ensure that the client receives a distinct notification for
+	 * all triggers that have a `notify` action that have this condition.
 	 */
-	struct lttng_trigger_ht_element *trigger_ht_element;
 	pthread_mutex_lock(&client_list->lock);
 	cds_list_for_each_entry(trigger_ht_element,
 			&client_list->triggers_list, client_list_trigger_node) {
@@ -1151,6 +1152,7 @@ int notification_thread_client_subscribe(struct notification_client *client,
 			WARN("[notification-thread] Evaluation of a condition on client subscription failed, aborting.");
 			ret = -1;
 			free(client_list_element);
+			pthread_mutex_unlock(&client_list->lock);
 			goto end;
 		}
 	}