diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index a7abfda..757ab08 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -27,6 +27,7 @@
 {
 	__QDISC_STATE_RUNNING,
 	__QDISC_STATE_SCHED,
+	__QDISC_STATE_DEACTIVATED,
 };
 
 struct qdisc_size_table {
diff --git a/net/core/dev.c b/net/core/dev.c
index 600bb23..d9e31f6 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1800,6 +1800,12 @@
 
 		spin_lock(root_lock);
 
+		if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) {
+			spin_unlock(root_lock);
+			rc = NET_XMIT_DROP;
+			goto out_kfree_skb;
+		}
+
 		rc = qdisc_enqueue_root(skb, q);
 		qdisc_run(q);
 
@@ -2084,7 +2090,8 @@
 	q = rxq->qdisc;
 	if (q != &noop_qdisc) {
 		spin_lock(qdisc_lock(q));
-		result = qdisc_enqueue_root(skb, q);
+		if (likely(!test_bit(__QDISC_STATE_DEACTIVATED, &q->state)))
+			result = qdisc_enqueue_root(skb, q);
 		spin_unlock(qdisc_lock(q));
 	}
 
diff --git a/net/sched/sch_generic.c b/net/sched/sch_generic.c
index 4685746..ff1c455 100644
--- a/net/sched/sch_generic.c
+++ b/net/sched/sch_generic.c
@@ -597,6 +597,9 @@
 	struct Qdisc *new_qdisc = dev_queue->qdisc_sleeping;
 	int *need_watchdog_p = _need_watchdog;
 
+	if (!(new_qdisc->flags & TCQ_F_BUILTIN))
+		clear_bit(__QDISC_STATE_DEACTIVATED, &new_qdisc->state);
+
 	rcu_assign_pointer(dev_queue->qdisc, new_qdisc);
 	if (need_watchdog_p && new_qdisc != &noqueue_qdisc)
 		*need_watchdog_p = 1;
@@ -640,6 +643,9 @@
 	if (qdisc) {
 		spin_lock_bh(qdisc_lock(qdisc));
 
+		if (!(qdisc->flags & TCQ_F_BUILTIN))
+			set_bit(__QDISC_STATE_DEACTIVATED, &qdisc->state);
+
 		dev_queue->qdisc = qdisc_default;
 		qdisc_reset(qdisc);