Fix: Missing rcu_read_lock in ust_app_get_nb_stream()

Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>

diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
index 1ad08690d9550436e951cdccff3a435f9a561760..11dde04abaea1f112dcd171e988ab922ed6d5537 100644 (file)
--- a/src/bin/lttng-sessiond/ust-app.c
+++ b/src/bin/lttng-sessiond/ust-app.c
@@ -5172,10 +5172,12 @@ unsigned int ust_app_get_nb_stream(struct ltt_ust_session *usess)
                cds_list_for_each_entry(reg, &usess->buffer_reg_uid_list, lnode) {
                        struct buffer_reg_channel *reg_chan;
 
+                       rcu_read_lock();
                        cds_lfht_for_each_entry(reg->registry->channels->ht, &iter.iter,
                                        reg_chan, node.node) {
                                ret += reg_chan->stream_count;
                        }
+                       rcu_read_unlock();
                }
                break;
        }