diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 67f3a2a..85f765c 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -372,15 +372,21 @@
 	[TCA_FLOW_PERTURB]	= { .type = NLA_U32 },
 };
 
+static void __flow_destroy_filter(struct flow_filter *f)
+{
+	del_timer_sync(&f->perturb_timer);
+	tcf_exts_destroy(&f->exts);
+	tcf_em_tree_destroy(&f->ematches);
+	tcf_exts_put_net(&f->exts);
+	kfree(f);
+}
+
 static void flow_destroy_filter_work(struct work_struct *work)
 {
 	struct flow_filter *f = container_of(work, struct flow_filter, work);
 
 	rtnl_lock();
-	del_timer_sync(&f->perturb_timer);
-	tcf_exts_destroy(&f->exts);
-	tcf_em_tree_destroy(&f->ematches);
-	kfree(f);
+	__flow_destroy_filter(f);
 	rtnl_unlock();
 }
 
@@ -552,8 +558,10 @@
 
 	*arg = fnew;
 
-	if (fold)
+	if (fold) {
+		tcf_exts_get_net(&fold->exts);
 		call_rcu(&fold->rcu, flow_destroy_filter);
+	}
 	return 0;
 
 err2:
@@ -570,6 +578,7 @@
 	struct flow_filter *f = arg;
 
 	list_del_rcu(&f->list);
+	tcf_exts_get_net(&f->exts);
 	call_rcu(&f->rcu, flow_destroy_filter);
 	*last = list_empty(&head->filters);
 	return 0;
@@ -594,7 +603,10 @@
 
 	list_for_each_entry_safe(f, next, &head->filters, list) {
 		list_del_rcu(&f->list);
-		call_rcu(&f->rcu, flow_destroy_filter);
+		if (tcf_exts_get_net(&f->exts))
+			call_rcu(&f->rcu, flow_destroy_filter);
+		else
+			__flow_destroy_filter(f);
 	}
 	kfree_rcu(head, rcu);
 }