Fix: Break out of loop when searching for a domain's agent

The list command never check if a domain's agent has been found
and lists the events of every agent.

This has two direct effects:

1) Memory leak of all agents' event descriptions, except the last
2) The session daemon lists the wrong agent's events

This fix check the agent's domain and breaks out of the loop once
one is found.

Fixes #906

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 7878a053c2aca086e63b63a331f5bacdf51160bf..b1d98639343917f9aad46249dbac6fd9ea039f94 100644 (file)
--- a/src/bin/lttng-sessiond/cmd.c
+++ b/src/bin/lttng-sessiond/cmd.c
@@ -2764,7 +2764,11 @@ ssize_t cmd_list_events(enum lttng_domain_type domain,
                        rcu_read_lock();
                        cds_lfht_for_each_entry(session->ust_session->agents->ht,
                                        &iter.iter, agt, node.node) {
                        rcu_read_lock();
                        cds_lfht_for_each_entry(session->ust_session->agents->ht,
                                        &iter.iter, agt, node.node) {

-                               nb_event = list_lttng_agent_events(agt, events);
+                               if (agt->domain == domain) {
+                                       nb_event = list_lttng_agent_events(
+                                                       agt, events);
+                                       break;
+                               }

                        }
                        rcu_read_unlock();
                }
                        }
                        rcu_read_unlock();
                }