Fix: missing rcu_read_lock in cmd_start_trace()

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 79b1040121c6c3c3bd451fbab6ba5ad2cd4584dd..4a1af43a75a2bad99168b28c378f303ef3062b5b 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -1813,7 +1813,9 @@ int cmd_start_trace(struct ltt_session *session)
         * possible to enable channel thus inform the client.
         */
        if (usess && usess->domain_global.channels) {
+               rcu_read_lock();
                nb_chan += lttng_ht_get_count(usess->domain_global.channels);
+               rcu_read_unlock();
        }
        if (ksession) {
                nb_chan += ksession->channel_count;