Fix: Missing rcu_read_lock in cmd_list_channels()
authorJérémie Galarneau <jeremie.galarneau@efficios.com>
Tue, 18 Nov 2014 19:19:43 +0000 (14:19 -0500)
committerJérémie Galarneau <jeremie.galarneau@efficios.com>
Fri, 21 Nov 2014 16:43:03 +0000 (11:43 -0500)
Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
src/bin/lttng-sessiond/cmd.c

index b6a7107788882d2c664a97620e861efe6500722b..f76a4422ea644b6997b46a6ed8620f27d9ad49b2 100644 (file)
@@ -2386,8 +2386,10 @@ ssize_t cmd_list_channels(int domain, struct ltt_session *session,
                break;
        case LTTNG_DOMAIN_UST:
                if (session->ust_session != NULL) {
+                       rcu_read_lock();
                        nb_chan = lttng_ht_get_count(
-                                       session->ust_session->domain_global.channels);
+                               session->ust_session->domain_global.channels);
+                       rcu_read_unlock();
                }
                DBG3("Number of UST global channels %zd", nb_chan);
                if (nb_chan < 0) {
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