--- x/net/sched/sch_taprio.c
+++ y/net/sched/sch_taprio.c
@@ -1984,6 +1984,7 @@ static int taprio_change(struct Qdisc *s
 		/* Protects against advance_sched() */
 		spin_lock_irqsave(&q->current_entry_lock, flags);
 
+		admin = rtnl_dereference(q->admin_sched);
 		taprio_start_sched(sch, start, new_admin);
 
 		rcu_assign_pointer(q->admin_sched, new_admin);