netfilter: nf_conntrack: netns fix re reliable conntrack event delivery

netfilter: nf_conntrack: netns fix re reliable conntrack event delivery

Upstream commit ee254fa4:

Conntracks in netns other than init_net dying list were never killed.
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

net/netfilter/nf_conntrack_core.c

@@ -1089,14 +1089,14 @@ void nf_conntrack_flush_report(struct net *net, u32 pid, int report)
 }
 EXPORT_SYMBOL_GPL(nf_conntrack_flush_report);
 
-static void nf_ct_release_dying_list(void)
+static void nf_ct_release_dying_list(struct net *net)
 {
 	struct nf_conntrack_tuple_hash *h;
 	struct nf_conn *ct;
 	struct hlist_nulls_node *n;
 
 	spin_lock_bh(&nf_conntrack_lock);
-	hlist_nulls_for_each_entry(h, n, &init_net.ct.dying, hnnode) {
+	hlist_nulls_for_each_entry(h, n, &net->ct.dying, hnnode) {
 		ct = nf_ct_tuplehash_to_ctrack(h);
 		/* never fails to remove them, no listeners at this point */
 		nf_ct_kill(ct);
@@ -1115,7 +1115,7 @@ static void nf_conntrack_cleanup_net(struct net *net)
 {
  i_see_dead_people:
 	nf_ct_iterate_cleanup(net, kill_all, NULL);
-	nf_ct_release_dying_list();
+	nf_ct_release_dying_list(net);
 	if (atomic_read(&net->ct.count) != 0) {
 		schedule();
 		goto i_see_dead_people;