diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1cd5eef1fcddf3f53149522b0a482b7989e5a7a8..2ab02380394509144d43a1cdc57cdc091911956e 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7435,11 +7435,11 @@ SYSCALL_DEFINE5(perf_event_open,
 
 	if (move_group) {
 		synchronize_rcu();
-		perf_install_in_context(ctx, group_leader, event->cpu);
+		perf_install_in_context(ctx, group_leader, group_leader->cpu);
 		get_ctx(ctx);
 		list_for_each_entry(sibling, &group_leader->sibling_list,
 				    group_entry) {
-			perf_install_in_context(ctx, sibling, event->cpu);
+			perf_install_in_context(ctx, sibling, sibling->cpu);
 			get_ctx(ctx);
 		}
 	}