From: Jérémie Galarneau <jeremie.galarneau@efficios.com>
Date: Tue, 18 Nov 2014 19:30:17 +0000 (-0500)
Subject: Fix: Missing rcu_read_lock in list_lttng_agent_events()
X-Git-Tag: v2.6.0-rc4~42
X-Git-Url: https://git.lttng.org/?a=commitdiff_plain;h=d515217cabe601d91ff9c3bb1d0d95dea9a989e4;p=lttng-tools.git

Fix: Missing rcu_read_lock in list_lttng_agent_events()

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 21881296e..19c277d96 100644
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -219,7 +219,9 @@ static int list_lttng_agent_events(struct agent *agt,
 
 	DBG3("Listing agent events");
 
+	rcu_read_lock();
 	nb_event = lttng_ht_get_count(agt->events);
+	rcu_read_unlock();
 	if (nb_event == 0) {
 		ret = nb_event;
 		goto error;