Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains two one-liner fixes for your net tree,
they are:

1) Disable fast hash operations for 2-bytes length keys which is leading
   to incorrect lookups in nf_tables, from Anatole Denis.

2) Reload pointer ipv4 header after ip_route_me_harder() given this may
   result in use-after-free due to skbuff header reallocation, patch
   from Tejaswi Tanikella.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/netfilter/nf_reject_ipv4.c

@@ -132,6 +132,8 @@ void nf_send_reset(struct net *net, struct sk_buff *oldskb, int hook)
 	if (ip_route_me_harder(net, nskb, RTN_UNSPEC))
 		goto free_nskb;
 
+	niph = ip_hdr(nskb);
+
 	/* "Never happens" */
 	if (nskb->len > dst_mtu(skb_dst(nskb)))
 		goto free_nskb;

net/netfilter/nft_set_hash.c

@@ -643,7 +643,6 @@ nft_hash_select_ops(const struct nft_ctx *ctx, const struct nft_set_desc *desc,
 {
 	if (desc->size) {
 		switch (desc->klen) {
-		case 2:
 		case 4:
 			return &nft_hash_fast_ops;
 		default: