X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-relayd%2Fsession.c;h=d1c2098f8591a3a8c9c5e87b022f43e8fff627ee;hp=14ae874ea782ef45624447659d988c1bd3a05258;hb=ce3f3ba3aee62c0a317b448c2f19578ab7f057e4;hpb=bda7c7b9b4c633de16f3d8bf109f9d21fdd9a5fb

diff --git a/src/bin/lttng-relayd/session.c b/src/bin/lttng-relayd/session.c
index 14ae874ea..d1c2098f8 100644
--- a/src/bin/lttng-relayd/session.c
+++ b/src/bin/lttng-relayd/session.c
@@ -17,7 +17,6 @@
  * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#define _GNU_SOURCE
 #define _LGPL_SOURCE
 #include <common/common.h>
 #include <urcu/rculist.h>
@@ -131,7 +130,14 @@ static void rcu_destroy_session(struct rcu_head *rcu_head)
 	struct relay_session *session =
 			caa_container_of(rcu_head, struct relay_session,
 				rcu_node);
-
+	/*
+	 * Since each trace has a reference on the session, it means
+	 * that if we are at the point where we teardown the session, no
+	 * trace belonging to that session exist at this point.
+	 * Calling lttng_ht_destroy in call_rcu worker thread so we
+	 * don't hold the RCU read-side lock while calling it.
+	 */
+	lttng_ht_destroy(session->ctf_traces_ht);
 	free(session);
 }
 
@@ -155,12 +161,6 @@ static void destroy_session(struct relay_session *session)
 
 	ret = session_delete(session);
 	assert(!ret);
-	/*
-	 * Since each trace has a reference on the session, it means
-	 * that if we are at the point where we teardown the session, no
-	 * trace belonging to that session exist at this point.
-	 */
-	lttng_ht_destroy(session->ctf_traces_ht);
 	call_rcu(&session->rcu_node, rcu_destroy_session);
 }
 
@@ -230,6 +230,10 @@ void print_sessions(void)
 	struct lttng_ht_iter iter;
 	struct relay_session *session;
 
+	if (!sessions_ht) {
+		return;
+	}
+
 	rcu_read_lock();
 	cds_lfht_for_each_entry(sessions_ht->ht, &iter.iter, session,
 			session_n.node) {