Fix: do not repurpose iterator while it is being used

[lttng-tools.git] / src / bin / lttng-sessiond / notification-thread-events.c

diff --git a/src/bin/lttng-sessiond/notification-thread-events.c b/src/bin/lttng-sessiond/notification-thread-events.c
index 3482a7e89509b697743fd62d57baa7c7bbc26c90..9d82b8313bfc59701619378a22cb69550bfc5eb4 100644 (file)
--- a/src/bin/lttng-sessiond/notification-thread-events.c
+++ b/src/bin/lttng-sessiond/notification-thread-events.c
@@ -1931,6 +1931,7 @@ int bind_trigger_to_matching_channels(const struct lttng_trigger *trigger,
                        channels_ht_node) {
                struct lttng_trigger_list_element *trigger_list_element;
                struct lttng_channel_trigger_list *trigger_list;
+               struct cds_lfht_iter lookup_iter;
 
                if (!trigger_applies_to_channel(trigger, channel)) {
                        continue;
@@ -1940,8 +1941,8 @@ int bind_trigger_to_matching_channels(const struct lttng_trigger *trigger,
                                hash_channel_key(&channel->key),
                                match_channel_trigger_list,
                                &channel->key,
-                               &iter);
-               node = cds_lfht_iter_get_node(&iter);
+                               &lookup_iter);
+               node = cds_lfht_iter_get_node(&lookup_iter);
                assert(node);
                trigger_list = caa_container_of(node,
                                struct lttng_channel_trigger_list,
@@ -2277,9 +2278,9 @@ int handle_notification_thread_command(
        struct notification_thread_command *cmd;
 
        /* Read the event pipe to put it back into a quiescent state. */
-       ret = read(lttng_pipe_get_readfd(handle->cmd_queue.event_pipe), &counter,
+       ret = lttng_read(lttng_pipe_get_readfd(handle->cmd_queue.event_pipe), &counter,
                        sizeof(counter));
-       if (ret == -1) {
+       if (ret != sizeof(counter)) {
                goto error;
        }