netfilter: nf_tables: skip bound chain in netns release path

Skip bound chain from netns release path, the rule that owns this chain
releases these objects.

Fixes: d0e2c7d ("netfilter: nf_tables: add NFT_CHAIN_BINDING")
Signed-off-by: Pablo Neira Ayuso <[email protected]>
Signed-off-by: Florian Westphal <[email protected]>

Author: ummakynes

net/netfilter/nf_tables_api.c

@@ -10802,6 +10802,9 @@ static void __nft_release_table(struct net *net, struct nft_table *table)
 	ctx.family = table->family;
 	ctx.table = table;
 	list_for_each_entry(chain, &table->chains, list) {
+		if (nft_chain_is_bound(chain))
+			continue;
+
 		ctx.chain = chain;
 		list_for_each_entry_safe(rule, nr, &chain->rules, list) {
 			list_del(&rule->list);