Fix: Lock metadata cache on session destroy

[lttng-modules.git] / lttng-events.c

diff --git a/lttng-events.c b/lttng-events.c
index 59b37b93c818d74c369fc7d6b9342719b6ebd911..be7e389702dbfbaccaabc85ed75f779905d8c202 100644 (file)
--- a/lttng-events.c
+++ b/lttng-events.c
@@ -210,8 +210,10 @@ void lttng_session_destroy(struct lttng_session *session)
                BUG_ON(chan->channel_type == METADATA_CHANNEL);
                _lttng_channel_destroy(chan);
        }
+       mutex_lock(&session->metadata_cache->lock);
        list_for_each_entry(metadata_stream, &session->metadata_cache->metadata_stream, list)
                _lttng_metadata_channel_hangup(metadata_stream);
+       mutex_unlock(&session->metadata_cache->lock);
        lttng_id_tracker_destroy(&session->pid_tracker, false);
        lttng_id_tracker_destroy(&session->vpid_tracker, false);
        lttng_id_tracker_destroy(&session->uid_tracker, false);