X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fcmd.c;h=f76a4422ea644b6997b46a6ed8620f27d9ad49b2;hb=bfeab1106e53d1c5648f18a4cef0c40aa82f7714;hp=b6a7107788882d2c664a97620e861efe6500722b;hpb=869489f63358a9db1adb5cabf6c2a7a7133746a9;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index b6a710778..f76a4422e 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -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) {