diff --git a/kernel/events/core.c b/kernel/events/core.c
index f79fd8b87f75edc22453a47dee8c9b14855e8eeb..fb3e436bcd4ac7e8a04da3e16123f3d8b0d066a9 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2163,7 +2163,7 @@ static void perf_group_detach(struct perf_event *event)
 		/* Inherit group flags from the previous leader */
 		sibling->group_caps = event->group_caps;
 
-		if (!RB_EMPTY_NODE(&event->group_node)) {
+		if (sibling->attach_state & PERF_ATTACH_CONTEXT) {
 			add_event_to_groups(sibling, event->ctx);
 
 			if (sibling->state == PERF_EVENT_STATE_ACTIVE)
@@ -3872,7 +3872,7 @@ ctx_sched_in(struct perf_event_context *ctx, enum event_type_t event_type)
 	if (likely(!ctx->nr_events))
 		return;
 
-	if (is_active ^ EVENT_TIME) {
+	if (!(is_active & EVENT_TIME)) {
 		/* start ctx time */
 		__update_context_time(ctx, false);
 		perf_cgroup_set_timestamp(cpuctx);
@@ -9187,7 +9187,7 @@ static void perf_event_bpf_output(struct perf_event *event, void *data)
 
 	perf_event_header__init_id(&bpf_event->event_id.header,
 				   &sample, event);
-	ret = perf_output_begin(&handle, data, event,
+	ret = perf_output_begin(&handle, &sample, event,
 				bpf_event->event_id.header.size);
 	if (ret)
 		return;