diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index ef4e76e5aef9..e5415ba18652 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -59,8 +59,10 @@ static struct nf_hook_entries *allocate_hook_entries_size(u16 num)
 		return NULL;
 
 	e = kvzalloc(alloc, GFP_KERNEL_ACCOUNT);
-	if (e)
+	if (e) {
+		printk("%p, %d, %s\n", e, num, __func__);
 		e->num_hook_entries = num;
+	}
 	return e;
 }
 
@@ -117,7 +119,7 @@ nf_hook_entries_grow(const struct nf_hook_entries *old,
 		orig_ops = nf_hook_entries_get_hook_ops(old);
 
 		for (i = 0; i < old_entries; i++) {
-			if (orig_ops[i] != &dummy_ops)
+			if (orig_ops[i] && orig_ops[i] != &dummy_ops)
 				alloc_entries++;
 
 			/* Restrict BPF hook type to force a unique priority, not
@@ -151,6 +153,7 @@ nf_hook_entries_grow(const struct nf_hook_entries *old,
 			continue;
 		}
 
+		printk("n %p, o %p, %p, %s\n", new, old, orig_ops[i], __func__);
 		if (inserted || reg->priority > orig_ops[i]->priority) {
 			new_ops[nhooks] = (void *)orig_ops[i];
 			new->hooks[nhooks] = old->hooks[i];
@@ -201,6 +204,7 @@ int nf_hook_entries_insert_raw(struct nf_hook_entries __rcu **pp,
 	struct nf_hook_entries *p;
 
 	p = rcu_dereference_raw(*pp);
+	printk("%p, %s\n",p, __func__);
 	new_hooks = nf_hook_entries_grow(p, reg);
 	if (IS_ERR(new_hooks))
 		return PTR_ERR(new_hooks);
@@ -244,7 +248,7 @@ static void *__nf_hook_entries_try_shrink(struct nf_hook_entries *old,
 
 	orig_ops = nf_hook_entries_get_hook_ops(old);
 	for (i = 0; i < old->num_hook_entries; i++) {
-		if (orig_ops[i] == &dummy_ops)
+		if (!orig_ops[i] || orig_ops[i] == &dummy_ops)
 			skip++;
 	}
 
@@ -261,12 +265,15 @@ static void *__nf_hook_entries_try_shrink(struct nf_hook_entries *old,
 	if (!new)
 		return NULL;
 
+	printk("old ents: %p, new ents: %p, %s\n", old, new, __func__);
 	new_ops = nf_hook_entries_get_hook_ops(new);
 	for (i = 0, j = 0; i < old->num_hook_entries; i++) {
-		if (orig_ops[i] == &dummy_ops)
+		if (!orig_ops[i] || orig_ops[i] == &dummy_ops)
 			continue;
 		new->hooks[j] = old->hooks[i];
 		new_ops[j] = (void *)orig_ops[i];
+		printk("new ents: %p, new uo h: %p, new ops: %p, %s\n",
+				new, new->hooks[j], new_ops[j], __func__);
 		j++;
 	}
 	hooks_validate(new);
@@ -279,6 +286,9 @@ static struct nf_hook_entries __rcu **
 nf_hook_entry_head(struct net *net, int pf, unsigned int hooknum,
 		   struct net_device *dev)
 {
+	printk("pf: %d, ipv4 size: %d, hooknum: %d,  %s\n", pf, 
+			ARRAY_SIZE(net->nf.hooks_ipv4),
+			hooknum, __func__);
 	switch (pf) {
 	case NFPROTO_NETDEV:
 		break;
@@ -432,6 +442,7 @@ static int __nf_register_net_hook(struct net *net, int pf,
 	mutex_lock(&nf_hook_mutex);
 
 	p = nf_entry_dereference(*pp);
+	printk("%p, %s\n",p, __func__);
 	new_hooks = nf_hook_entries_grow(p, reg);
 
 	if (!IS_ERR(new_hooks)) {
@@ -473,12 +484,16 @@ static bool nf_remove_net_hook(struct nf_hook_entries *old,
 	struct nf_hook_ops **orig_ops;
 	unsigned int i;
 
+	printk("ents: %p, del ops: %p, num: %d, %s\n", old, unreg, old->num_hook_entries, __func__);
 	orig_ops = nf_hook_entries_get_hook_ops(old);
 	for (i = 0; i < old->num_hook_entries; i++) {
-		if (orig_ops[i] != unreg)
+		if (orig_ops[i] != unreg) {
+			printk("%p, %d, %s\n", orig_ops[i], i, __func__);
 			continue;
+		}
 		WRITE_ONCE(old->hooks[i].hook, accept_all);
 		WRITE_ONCE(orig_ops[i], (void *)&dummy_ops);
+		printk("ents: %p, del ops: %p, i: %d, %s\n", old, orig_ops[i], i, __func__);
 		return true;
 	}
 
@@ -558,6 +573,7 @@ int nf_register_net_hook(struct net *net, const struct nf_hook_ops *reg)
 {
 	int err;
 
+	printk("%p, %p, %s\n", net, reg, __func__); 
 	if (reg->pf == NFPROTO_INET) {
 		if (reg->hooknum == NF_INET_INGRESS) {
 			err = __nf_register_net_hook(net, NFPROTO_INET, reg);
diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
index a72b6aeefb1b..a5fb9b1de917 100644
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -10001,6 +10001,7 @@ static int nf_tables_commit(struct net *net, struct sk_buff *skb)
 				nft_chain_del(trans->ctx.chain);
 				nf_tables_chain_notify(&trans->ctx, NFT_MSG_DELCHAIN,
 						       NULL);
+				printk("destroy chain %p, %s\n", &trans->ctx.chain, __func__);
 				nf_tables_unregister_hook(trans->ctx.net,
 							  trans->ctx.table,
 							  trans->ctx.chain);