From a9e410447d26fdc9aba52718b4f9d698f9867fc6 Mon Sep 17 00:00:00 2001
From: =?utf8?q?J=C3=A9r=C3=A9mie=20Galarneau?=
 <jeremie.galarneau@efficios.com>
Date: Thu, 13 Nov 2014 16:09:57 -0500
Subject: [PATCH] Fix: missing rcu_read_lock in cmd_start_trace()
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Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
---
 src/bin/lttng-sessiond/cmd.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/bin/lttng-sessiond/cmd.c b/src/bin/lttng-sessiond/cmd.c
index 17091de09..c2b0248ea 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -1848,7 +1848,9 @@ 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;
-- 
2.34.1