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-rw-r--r--net/ipv4/fib_trie.c4
-rw-r--r--net/ipv4/fou_core.c9
-rw-r--r--net/ipv4/igmp.c63
-rw-r--r--net/ipv4/inet_connection_sock.c1
-rw-r--r--net/ipv4/ip_vti.c3
-rw-r--r--net/ipv4/ipip.c3
-rw-r--r--net/ipv4/netfilter/nf_nat_h323.c12
-rw-r--r--net/ipv4/netfilter/nf_nat_pptp.c14
-rw-r--r--net/ipv4/netfilter/nf_nat_snmp_basic_main.c27
-rw-r--r--net/ipv4/netfilter/nf_reject_ipv4.c2
-rw-r--r--net/ipv4/tcp_bbr.c2
-rw-r--r--net/ipv4/tcp_ipv4.c4
-rw-r--r--net/ipv4/tcp_output.c8
-rw-r--r--net/ipv4/udp_bpf.c9
-rw-r--r--net/ipv4/udp_tunnel_core.c10
-rw-r--r--net/ipv4/udp_tunnel_nic.c2
-rw-r--r--net/ipv4/xfrm4_input.c2
17 files changed, 118 insertions, 57 deletions
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 1308213791f1..dac543c1d686 100644
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -2172,10 +2172,14 @@ static int fib_leaf_notify(struct key_vector *l, struct fib_table *tb,
if (fa->fa_slen == last_slen)
continue;
+ if (!fib_info_hold_safe(fa->fa_info))
+ continue;
+
last_slen = fa->fa_slen;
err = call_fib_entry_notifier(nb, FIB_EVENT_ENTRY_REPLACE,
l->key, KEYLENGTH - fa->fa_slen,
fa, extack);
+ fib_info_put(fa->fa_info);
if (err)
return err;
}
diff --git a/net/ipv4/fou_core.c b/net/ipv4/fou_core.c
index 5bae3cf7fe76..6bed0e1dbe0e 100644
--- a/net/ipv4/fou_core.c
+++ b/net/ipv4/fou_core.c
@@ -558,11 +558,8 @@ static int fou_add_to_port_list(struct net *net, struct fou *fou,
static void fou_release(struct fou *fou)
{
- struct socket *sock = fou->sock;
-
list_del(&fou->list);
- udp_tunnel_sock_release(sock);
-
+ udp_tunnel_sock_release(fou->sock->sk);
kfree_rcu(fou, rcu);
}
@@ -618,7 +615,7 @@ static int fou_create(struct net *net, struct fou_cfg *cfg,
goto error;
}
- setup_udp_tunnel_sock(net, sock, &tunnel_cfg);
+ setup_udp_tunnel_sock(net, sk, &tunnel_cfg);
sk->sk_allocation = GFP_ATOMIC;
@@ -634,7 +631,7 @@ static int fou_create(struct net *net, struct fou_cfg *cfg,
error:
kfree(fou);
if (sock)
- udp_tunnel_sock_release(sock);
+ udp_tunnel_sock_release(sock->sk);
return err;
}
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 523aecb3c9be..f22fbc17f15b 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -217,13 +217,18 @@ static void ip_sf_list_clear_all(struct ip_sf_list *psf)
static void igmp_stop_timer(struct ip_mc_list *im)
{
+ bool put = false;
+
spin_lock_bh(&im->lock);
if (timer_delete(&im->timer))
- refcount_dec(&im->refcnt);
- im->tm_running = 0;
- im->reporter = 0;
+ put = true;
+ WRITE_ONCE(im->tm_running, 0);
+ WRITE_ONCE(im->reporter, 0);
im->unsolicit_count = 0;
spin_unlock_bh(&im->lock);
+
+ if (put)
+ ip_ma_put(im);
}
/* It must be called with locked im->lock */
@@ -231,7 +236,7 @@ static void igmp_start_timer(struct ip_mc_list *im, int max_delay)
{
int tv = get_random_u32_below(max_delay);
- im->tm_running = 1;
+ WRITE_ONCE(im->tm_running, 1);
if (refcount_inc_not_zero(&im->refcnt)) {
if (mod_timer(&im->timer, jiffies + tv + 2))
ip_ma_put(im);
@@ -248,33 +253,42 @@ static void igmp_gq_start_timer(struct in_device *in_dev)
return;
in_dev->mr_gq_running = 1;
- if (!mod_timer(&in_dev->mr_gq_timer, exp))
- in_dev_hold(in_dev);
+ if (in_dev_hold_safe(in_dev)) {
+ if (mod_timer(&in_dev->mr_gq_timer, exp))
+ in_dev_put(in_dev);
+ }
}
static void igmp_ifc_start_timer(struct in_device *in_dev, int delay)
{
- int tv = get_random_u32_below(delay);
+ if (in_dev_hold_safe(in_dev)) {
+ int tv = get_random_u32_below(delay);
- if (!mod_timer(&in_dev->mr_ifc_timer, jiffies+tv+2))
- in_dev_hold(in_dev);
+ if (mod_timer(&in_dev->mr_ifc_timer, jiffies + tv + 2))
+ in_dev_put(in_dev);
+ }
}
static void igmp_mod_timer(struct ip_mc_list *im, int max_delay)
{
+ bool put = false;
+
spin_lock_bh(&im->lock);
im->unsolicit_count = 0;
if (timer_delete(&im->timer)) {
if ((long)(im->timer.expires-jiffies) < max_delay) {
add_timer(&im->timer);
- im->tm_running = 1;
+ WRITE_ONCE(im->tm_running, 1);
spin_unlock_bh(&im->lock);
return;
}
- refcount_dec(&im->refcnt);
+ put = true;
}
igmp_start_timer(im, max_delay);
spin_unlock_bh(&im->lock);
+
+ if (put)
+ ip_ma_put(im);
}
@@ -857,12 +871,12 @@ static void igmp_timer_expire(struct timer_list *t)
struct in_device *in_dev = im->interface;
spin_lock(&im->lock);
- im->tm_running = 0;
+ WRITE_ONCE(im->tm_running, 0);
if (im->unsolicit_count && --im->unsolicit_count)
igmp_start_timer(im, unsolicited_report_interval(in_dev));
- im->reporter = 1;
+ WRITE_ONCE(im->reporter, 1);
spin_unlock(&im->lock);
if (IGMP_V1_SEEN(in_dev))
@@ -1325,7 +1339,7 @@ static void __igmp_group_dropped(struct ip_mc_list *im, gfp_t gfp)
!READ_ONCE(net->ipv4.sysctl_igmp_llm_reports))
return;
- reporter = im->reporter;
+ reporter = READ_ONCE(im->reporter);
igmp_stop_timer(im);
if (!in_dev->dead) {
@@ -1541,7 +1555,7 @@ static void ____ip_mc_inc_group(struct in_device *in_dev, __be32 addr,
}
if (im) {
- im->users++;
+ WRITE_ONCE(im->users, im->users + 1);
ip_mc_add_src(in_dev, &addr, mode, 0, NULL, 0);
goto out;
}
@@ -1550,7 +1564,7 @@ static void ____ip_mc_inc_group(struct in_device *in_dev, __be32 addr,
if (!im)
goto out;
- im->users = 1;
+ WRITE_ONCE(im->users, 1);
im->interface = in_dev;
in_dev_hold(in_dev);
im->multiaddr = addr;
@@ -1784,7 +1798,10 @@ void __ip_mc_dec_group(struct in_device *in_dev, __be32 addr, gfp_t gfp)
(i = rtnl_dereference(*ip)) != NULL;
ip = &i->next_rcu) {
if (i->multiaddr == addr) {
- if (--i->users == 0) {
+ int new_users = i->users - 1;
+
+ WRITE_ONCE(i->users, new_users);
+ if (new_users == 0) {
ip_mc_hash_remove(in_dev, i);
*ip = i->next_rcu;
in_dev->mc_count--;
@@ -2960,6 +2977,7 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v)
struct ip_mc_list *im = v;
struct igmp_mc_iter_state *state = igmp_mc_seq_private(seq);
char *querier;
+ int tm_running;
long delta;
#ifdef CONFIG_IP_MULTICAST
@@ -2975,13 +2993,14 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v)
state->dev->ifindex, state->dev->name, state->in_dev->mc_count, querier);
}
- delta = im->timer.expires - jiffies;
+ tm_running = READ_ONCE(im->tm_running);
+ delta = READ_ONCE(im->timer.expires) - jiffies;
seq_printf(seq,
"\t\t\t\t%08X %5d %d:%08lX\t\t%d\n",
- im->multiaddr, im->users,
- im->tm_running,
- im->tm_running ? jiffies_delta_to_clock_t(delta) : 0,
- im->reporter);
+ im->multiaddr, READ_ONCE(im->users),
+ tm_running,
+ tm_running ? jiffies_delta_to_clock_t(delta) : 0,
+ READ_ONCE(im->reporter));
}
return 0;
}
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 5b934ce8d98a..690f7fb3f029 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -1285,6 +1285,7 @@ EXPORT_SYMBOL(inet_csk_destroy_sock);
void inet_csk_prepare_for_destroy_sock(struct sock *sk)
{
/* The below has to be done to allow calling inet_csk_destroy_sock */
+ tcp_clear_sock_ops_cb_flags(sk);
sock_set_flag(sk, SOCK_DEAD);
tcp_orphan_count_inc();
}
diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
index 95b6bb78fcd2..3b80929994a0 100644
--- a/net/ipv4/ip_vti.c
+++ b/net/ipv4/ip_vti.c
@@ -596,6 +596,9 @@ static int vti_changelink(struct net_device *dev, struct nlattr *tb[],
struct ip_tunnel_parm_kern p;
__u32 fwmark = t->fwmark;
+ if (!rtnl_dev_link_net_capable(dev, t->net))
+ return -EPERM;
+
vti_netlink_parms(data, &p, &fwmark);
return ip_tunnel_changelink(dev, tb, &p, fwmark);
}
diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
index ff95b1b9908e..e7378569bd5b 100644
--- a/net/ipv4/ipip.c
+++ b/net/ipv4/ipip.c
@@ -494,6 +494,9 @@ static int ipip_changelink(struct net_device *dev, struct nlattr *tb[],
bool collect_md;
__u32 fwmark = t->fwmark;
+ if (!rtnl_dev_link_net_capable(dev, t->net))
+ return -EPERM;
+
if (ip_tunnel_netlink_encap_parms(data, &ipencap)) {
int err = ip_tunnel_encap_setup(t, &ipencap);
diff --git a/net/ipv4/netfilter/nf_nat_h323.c b/net/ipv4/netfilter/nf_nat_h323.c
index 10e1b0837731..183e8a3ff2ba 100644
--- a/net/ipv4/netfilter/nf_nat_h323.c
+++ b/net/ipv4/netfilter/nf_nat_h323.c
@@ -100,6 +100,9 @@ static int set_sig_addr(struct sk_buff *skb, struct nf_conn *ct,
__be16 port;
union nf_inet_addr addr;
+ if (!info)
+ return -1;
+
for (i = 0; i < count; i++) {
if (get_h225_addr(ct, *data, &taddr[i], &addr, &port)) {
if (addr.ip == ct->tuplehash[dir].tuple.src.u3.ip &&
@@ -184,6 +187,9 @@ static int nat_rtp_rtcp(struct sk_buff *skb, struct nf_conn *ct,
int i;
u_int16_t nated_port;
+ if (!info)
+ return -1;
+
/* Set expectations for NAT */
rtp_exp->saved_proto.udp.port = rtp_exp->tuple.dst.u.udp.port;
rtp_exp->expectfn = nf_nat_follow_master;
@@ -325,6 +331,9 @@ static int nat_h245(struct sk_buff *skb, struct nf_conn *ct,
int dir = CTINFO2DIR(ctinfo);
u_int16_t nated_port = ntohs(port);
+ if (!info)
+ return -1;
+
/* Set expectations for NAT */
exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
exp->expectfn = nf_nat_follow_master;
@@ -404,6 +413,9 @@ static int nat_q931(struct sk_buff *skb, struct nf_conn *ct,
u_int16_t nated_port = ntohs(port);
union nf_inet_addr addr;
+ if (!info)
+ return -1;
+
/* Set expectations for NAT */
exp->saved_proto.tcp.port = exp->tuple.dst.u.tcp.port;
exp->expectfn = ip_nat_q931_expect;
diff --git a/net/ipv4/netfilter/nf_nat_pptp.c b/net/ipv4/netfilter/nf_nat_pptp.c
index fab357cc8559..fed5249001a4 100644
--- a/net/ipv4/netfilter/nf_nat_pptp.c
+++ b/net/ipv4/netfilter/nf_nat_pptp.c
@@ -53,11 +53,13 @@ static void pptp_nat_expected(struct nf_conn *ct,
struct nf_conn_nat *nat;
nat = nf_ct_nat_ext_add(ct);
- if (WARN_ON_ONCE(!nat))
+ if (!nat)
return;
nat_pptp_info = &nat->help.nat_pptp_info;
ct_pptp_info = nfct_help_data(master);
+ if (!ct_pptp_info)
+ return;
/* And here goes the grand finale of corrosion... */
if (exp->dir == IP_CT_DIR_ORIGINAL) {
@@ -132,11 +134,13 @@ pptp_outbound_pkt(struct sk_buff *skb,
__be16 new_callid;
unsigned int cid_off;
- if (WARN_ON_ONCE(!nat))
+ if (!nat)
return NF_DROP;
nat_pptp_info = &nat->help.nat_pptp_info;
ct_pptp_info = nfct_help_data(ct);
+ if (!ct_pptp_info)
+ return NF_DROP;
new_callid = ct_pptp_info->pns_call_id;
@@ -204,11 +208,13 @@ pptp_exp_gre(struct nf_conntrack_expect *expect_orig,
struct nf_ct_pptp_master *ct_pptp_info;
struct nf_nat_pptp *nat_pptp_info;
- if (WARN_ON_ONCE(!nat))
+ if (!nat)
return;
nat_pptp_info = &nat->help.nat_pptp_info;
ct_pptp_info = nfct_help_data(ct);
+ if (!ct_pptp_info)
+ return;
/* save original PAC call ID in nat_info */
nat_pptp_info->pac_call_id = ct_pptp_info->pac_call_id;
@@ -241,7 +247,7 @@ pptp_inbound_pkt(struct sk_buff *skb,
__be16 new_pcid;
unsigned int pcid_off;
- if (WARN_ON_ONCE(!nat))
+ if (!nat)
return NF_DROP;
nat_pptp_info = &nat->help.nat_pptp_info;
diff --git a/net/ipv4/netfilter/nf_nat_snmp_basic_main.c b/net/ipv4/netfilter/nf_nat_snmp_basic_main.c
index 717b726504fe..0ede138dfd29 100644
--- a/net/ipv4/netfilter/nf_nat_snmp_basic_main.c
+++ b/net/ipv4/netfilter/nf_nat_snmp_basic_main.c
@@ -202,29 +202,34 @@ static const struct nf_conntrack_expect_policy snmp_exp_policy = {
.timeout = 180,
};
-static struct nf_conntrack_helper snmp_trap_helper __read_mostly = {
- .me = THIS_MODULE,
- .help = help,
- .expect_policy = &snmp_exp_policy,
- .name = "snmp_trap",
- .tuple.src.l3num = AF_INET,
- .tuple.src.u.udp.port = cpu_to_be16(SNMP_TRAP_PORT),
- .tuple.dst.protonum = IPPROTO_UDP,
-};
+static struct nf_conntrack_helper snmp_trap_helper __read_mostly;
+static struct nf_conntrack_helper *snmp_trap_helper_ptr __read_mostly;
static int __init nf_nat_snmp_basic_init(void)
{
+ int err;
+
BUG_ON(nf_nat_snmp_hook != NULL);
RCU_INIT_POINTER(nf_nat_snmp_hook, help);
- return nf_conntrack_helper_register(&snmp_trap_helper);
+ nf_ct_helper_init(&snmp_trap_helper, AF_INET, IPPROTO_UDP,
+ "snmp_trap", SNMP_TRAP_PORT, SNMP_TRAP_PORT, SNMP_TRAP_PORT,
+ &snmp_exp_policy, 0, help, NULL, THIS_MODULE);
+
+ err = nf_conntrack_helper_register(&snmp_trap_helper, &snmp_trap_helper_ptr);
+ if (err < 0) {
+ RCU_INIT_POINTER(nf_nat_snmp_hook, NULL);
+ return err;
+ }
+
+ return 0;
}
static void __exit nf_nat_snmp_basic_fini(void)
{
RCU_INIT_POINTER(nf_nat_snmp_hook, NULL);
synchronize_rcu();
- nf_conntrack_helper_unregister(&snmp_trap_helper);
+ nf_conntrack_helper_unregister(snmp_trap_helper_ptr);
}
module_init(nf_nat_snmp_basic_init);
diff --git a/net/ipv4/netfilter/nf_reject_ipv4.c b/net/ipv4/netfilter/nf_reject_ipv4.c
index fecf6621f679..4626dc46808f 100644
--- a/net/ipv4/netfilter/nf_reject_ipv4.c
+++ b/net/ipv4/netfilter/nf_reject_ipv4.c
@@ -89,7 +89,7 @@ static bool nf_skb_is_icmp_unreach(const struct sk_buff *skb)
if (iph->protocol != IPPROTO_ICMP)
return false;
- thoff = skb_network_offset(skb) + sizeof(*iph);
+ thoff = skb_network_offset(skb) + ip_hdrlen(skb);
tp = skb_header_pointer(skb,
thoff + offsetof(struct icmphdr, type),
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index aec7805b1d37..82378a2bfd1e 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: GPL-2.0
+// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Bottleneck Bandwidth and RTT (BBR) congestion control
*
* BBR congestion control computes the sending rate based on the delivery
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index fdc81150ff6c..bfdabad01fa7 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1467,9 +1467,9 @@ void tcp_clear_md5_list(struct sock *sk)
md5sig = rcu_dereference_protected(tp->md5sig_info, 1);
hlist_for_each_entry_safe(key, n, &md5sig->head, node) {
- hlist_del(&key->node);
+ hlist_del_rcu(&key->node);
atomic_sub(sizeof(*key), &sk->sk_omem_alloc);
- kfree(key);
+ kfree_rcu(key, rcu);
}
}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 193637a58dcc..a88c7eb72b96 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -4328,9 +4328,13 @@ int tcp_connect(struct sock *sk)
if (needs_md5) {
tcp_ao_destroy_sock(sk, false);
} else if (needs_ao) {
+ struct tcp_md5sig_info *md5sig;
+
tcp_clear_md5_list(sk);
- kfree(rcu_replace_pointer(tp->md5sig_info, NULL,
- lockdep_sock_is_held(sk)));
+ md5sig = rcu_replace_pointer(tp->md5sig_info, NULL,
+ lockdep_sock_is_held(sk));
+ kfree_rcu(md5sig, rcu);
+ static_branch_slow_dec_deferred(&tcp_md5_needed);
}
}
#endif
diff --git a/net/ipv4/udp_bpf.c b/net/ipv4/udp_bpf.c
index 9f33b07b1481..ad57c4c9eaab 100644
--- a/net/ipv4/udp_bpf.c
+++ b/net/ipv4/udp_bpf.c
@@ -50,7 +50,9 @@ static int udp_msg_wait_data(struct sock *sk, struct sk_psock *psock,
sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk);
ret = udp_msg_has_data(sk, psock);
if (!ret) {
+ release_sock(sk);
wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
+ lock_sock(sk);
ret = udp_msg_has_data(sk, psock);
}
sk_clear_bit(SOCKWQ_ASYNC_WAITDATA, sk);
@@ -79,6 +81,7 @@ static int udp_bpf_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
goto out;
}
+ lock_sock(sk);
msg_bytes_ready:
copied = sk_msg_recvmsg(sk, psock, msg, len, flags);
if (!copied) {
@@ -90,11 +93,17 @@ msg_bytes_ready:
if (data) {
if (psock_has_data(psock))
goto msg_bytes_ready;
+
+ release_sock(sk);
+
ret = sk_udp_recvmsg(sk, msg, len, flags);
goto out;
}
copied = -EAGAIN;
}
+
+ release_sock(sk);
+
ret = copied;
out:
sk_psock_put(sk, psock);
diff --git a/net/ipv4/udp_tunnel_core.c b/net/ipv4/udp_tunnel_core.c
index b1f667c52cb2..3090b4745d47 100644
--- a/net/ipv4/udp_tunnel_core.c
+++ b/net/ipv4/udp_tunnel_core.c
@@ -68,11 +68,9 @@ static bool sk_saddr_any(struct sock *sk)
#endif
}
-void setup_udp_tunnel_sock(struct net *net, struct socket *sock,
+void setup_udp_tunnel_sock(struct net *net, struct sock *sk,
struct udp_tunnel_sock_cfg *cfg)
{
- struct sock *sk = sock->sk;
-
/* Disable multicast loopback */
inet_clear_bit(MC_LOOP, sk);
@@ -195,9 +193,11 @@ void udp_tunnel_xmit_skb(struct rtable *rt, struct sock *sk, struct sk_buff *skb
}
EXPORT_SYMBOL_GPL(udp_tunnel_xmit_skb);
-void udp_tunnel_sock_release(struct socket *sock)
+void udp_tunnel_sock_release(struct sock *sk)
{
- rcu_assign_sk_user_data(sock->sk, NULL);
+ struct socket *sock = sk->sk_socket;
+
+ rcu_assign_sk_user_data(sk, NULL);
synchronize_rcu();
kernel_sock_shutdown(sock, SHUT_RDWR);
sock_release(sock);
diff --git a/net/ipv4/udp_tunnel_nic.c b/net/ipv4/udp_tunnel_nic.c
index 9944ed923ddf..3b32a0afa979 100644
--- a/net/ipv4/udp_tunnel_nic.c
+++ b/net/ipv4/udp_tunnel_nic.c
@@ -301,7 +301,7 @@ __udp_tunnel_nic_device_sync(struct net_device *dev, struct udp_tunnel_nic *utn)
static void
udp_tunnel_nic_device_sync(struct net_device *dev, struct udp_tunnel_nic *utn)
{
- if (!utn->need_sync)
+ if (!utn->need_sync || utn->work_pending)
return;
queue_work(udp_tunnel_nic_workqueue, &utn->work);
diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c
index c2eac844bcdb..f6f2a8ef3f88 100644
--- a/net/ipv4/xfrm4_input.c
+++ b/net/ipv4/xfrm4_input.c
@@ -76,8 +76,6 @@ int xfrm4_transport_finish(struct sk_buff *skb, int async)
NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING,
dev_net(dev), NULL, skb, dev, NULL,
xfrm4_rcv_encap_finish);
- if (async)
- dev_put(dev);
return 0;
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-07-24 23:05:35 +0000