sizeof(enabler->event_param));
enabler->chan = chan;
/* ctx left NULL */
- enabler->enabled = 1;
+ /*
+ * The "disable" event create comm field has been added to fix a
+ * race between event creation (of a started trace) and enabling
+ * filtering. New session daemon always set the "disable" field
+ * to 1, and are aware that they need to explicitly enable the
+ * event. Older session daemon (within same ABI) leave it at 0,
+ * and therefore we need to enable it here, keeping the original
+ * racy behavior.
+ */
+ enabler->enabled = !event_param->disabled;
cds_list_add(&enabler->node, &enabler->chan->session->enablers_head);
lttng_session_lazy_sync_enablers(enabler->chan->session);
return enabler;