Commit a72338a0 authored by David S. Miller's avatar David S. Miller

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter/IPVS fixes for net

This patchset contains four nf_tables fixes, one IPVS fix due to
missing updates in the interaction with the new sedadj conntrack
extension that was added to support the netfilter synproxy code,
and a couple of one-liners to fix netnamespace netfilter issues.
More specifically, they are:

* Fix ipv6_find_hdr() call without offset being explicitly initialized
  in nft_exthdr, as required by that function, from Daniel Borkmann.

* Fix oops in nfnetlink_log when using netns and unloading the kernel
  module, from Gao feng.

* Fix BUG_ON in nf_ct_timestamp extension after netns is destroyed,
  from Helmut Schaa.

* Fix crash in IPVS due to missing sequence adjustment extension being
  allocated in the conntrack, from Jesper Dangaard Brouer.

* Add bugtrap to spot a warning in case you deference sequence adjustment
  conntrack area when not available, this should help to catch similar
  invalid dereferences in the Netfilter tree, also from Jesper.

* Fix incomplete dumping of sets in nf_tables when retrieving by family,
  from me.

* Fix oops when updating the table state (dormant <-> active) and having
  user (not base ) chains, from me.

* Fix wrong validation in set element data that results in returning
  -EINVAL when using the nf_tables dictionary feature with mappings,
  also from me.

We don't usually have this amount of fixes by this time (as we're already
in -rc5 of the development cycle), although half of them are related to
nf_tables which is a relatively new thing, and I also believe that holidays
have also delayed the flight of bugfixes to mainstream a bit.
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 6a9eadcc 2ee0d3c8
......@@ -63,6 +63,7 @@
#include <net/ip_vs.h>
#include <net/netfilter/nf_conntrack_core.h>
#include <net/netfilter/nf_conntrack_expect.h>
#include <net/netfilter/nf_conntrack_seqadj.h>
#include <net/netfilter/nf_conntrack_helper.h>
#include <net/netfilter/nf_conntrack_zones.h>
......@@ -97,6 +98,11 @@ ip_vs_update_conntrack(struct sk_buff *skb, struct ip_vs_conn *cp, int outin)
if (CTINFO2DIR(ctinfo) != IP_CT_DIR_ORIGINAL)
return;
/* Applications may adjust TCP seqs */
if (cp->app && nf_ct_protonum(ct) == IPPROTO_TCP &&
!nfct_seqadj(ct) && !nfct_seqadj_ext_add(ct))
return;
/*
* The connection is not yet in the hashtable, so we update it.
* CIP->VIP will remain the same, so leave the tuple in
......
......@@ -36,6 +36,11 @@ int nf_ct_seqadj_set(struct nf_conn *ct, enum ip_conntrack_info ctinfo,
if (off == 0)
return 0;
if (unlikely(!seqadj)) {
WARN(1, "Wrong seqadj usage, missing nfct_seqadj_ext_add()\n");
return 0;
}
set_bit(IPS_SEQ_ADJUST_BIT, &ct->status);
spin_lock_bh(&ct->lock);
......
......@@ -97,7 +97,6 @@ int nf_conntrack_tstamp_pernet_init(struct net *net)
void nf_conntrack_tstamp_pernet_fini(struct net *net)
{
nf_conntrack_tstamp_fini_sysctl(net);
nf_ct_extend_unregister(&tstamp_extend);
}
int nf_conntrack_tstamp_init(void)
......
......@@ -312,6 +312,9 @@ static int nf_tables_table_enable(struct nft_table *table)
int err, i = 0;
list_for_each_entry(chain, &table->chains, list) {
if (!(chain->flags & NFT_BASE_CHAIN))
continue;
err = nf_register_hook(&nft_base_chain(chain)->ops);
if (err < 0)
goto err;
......@@ -321,6 +324,9 @@ static int nf_tables_table_enable(struct nft_table *table)
return 0;
err:
list_for_each_entry(chain, &table->chains, list) {
if (!(chain->flags & NFT_BASE_CHAIN))
continue;
if (i-- <= 0)
break;
......@@ -333,8 +339,10 @@ static int nf_tables_table_disable(struct nft_table *table)
{
struct nft_chain *chain;
list_for_each_entry(chain, &table->chains, list)
nf_unregister_hook(&nft_base_chain(chain)->ops);
list_for_each_entry(chain, &table->chains, list) {
if (chain->flags & NFT_BASE_CHAIN)
nf_unregister_hook(&nft_base_chain(chain)->ops);
}
return 0;
}
......@@ -2098,17 +2106,21 @@ static int nf_tables_dump_sets_all(struct nft_ctx *ctx, struct sk_buff *skb,
struct netlink_callback *cb)
{
const struct nft_set *set;
unsigned int idx = 0, s_idx = cb->args[0];
unsigned int idx, s_idx = cb->args[0];
struct nft_table *table, *cur_table = (struct nft_table *)cb->args[2];
if (cb->args[1])
return skb->len;
list_for_each_entry(table, &ctx->afi->tables, list) {
if (cur_table && cur_table != table)
continue;
if (cur_table) {
if (cur_table != table)
continue;
cur_table = NULL;
}
ctx->table = table;
idx = 0;
list_for_each_entry(set, &ctx->table->sets, list) {
if (idx < s_idx)
goto cont;
......@@ -2370,7 +2382,9 @@ static int nf_tables_bind_check_setelem(const struct nft_ctx *ctx,
enum nft_registers dreg;
dreg = nft_type_to_reg(set->dtype);
return nft_validate_data_load(ctx, dreg, &elem->data, set->dtype);
return nft_validate_data_load(ctx, dreg, &elem->data,
set->dtype == NFT_DATA_VERDICT ?
NFT_DATA_VERDICT : NFT_DATA_VALUE);
}
int nf_tables_bind_set(const struct nft_ctx *ctx, struct nft_set *set,
......
......@@ -1053,6 +1053,7 @@ static void __net_exit nfnl_log_net_exit(struct net *net)
#ifdef CONFIG_PROC_FS
remove_proc_entry("nfnetlink_log", net->nf.proc_netfilter);
#endif
nf_log_unset(net, &nfulnl_logger);
}
static struct pernet_operations nfnl_log_net_ops = {
......
......@@ -31,7 +31,7 @@ static void nft_exthdr_eval(const struct nft_expr *expr,
{
struct nft_exthdr *priv = nft_expr_priv(expr);
struct nft_data *dest = &data[priv->dreg];
unsigned int offset;
unsigned int offset = 0;
int err;
err = ipv6_find_hdr(pkt->skb, &offset, priv->type, NULL, NULL);
......
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