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authorLinus Torvalds <torvalds@linux-foundation.org>2009-07-22 09:49:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-07-22 09:49:58 -0700
commit402168cee1a0b791c54c54a68ae21bb26880f40b (patch)
tree127b1bd8f2d06b18449998022eaab1c20baab950 /net
parent12e8ffe35eaca1411afc1f3124478f8e2b65eedc (diff)
parenta947a39d52f5b647a2fd5eca55d39e722a2fa90f (diff)
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (37 commits) sky2: Avoid races in sky2_down drivers/net/mlx4: Adjust constant drivers/net: Move a dereference below a NULL test drivers/net: Move a dereference below a NULL test connector: maintainer/mail update. USB host CDC Phonet network interface driver macsonic, jazzsonic: fix oops on module unload macsonic: move probe function to .devinit.text can: switch carrier on if device was stopped while in bus-off state can: restart device even if dev_alloc_skb() fails can: sja1000: remove duplicated includes New device ID for sc92031 [1088:2031] 3c589_cs: re-initialize the multicast in the tc589_reset Fix error return for setsockopt(SO_TIMESTAMPING) netxen: fix thermal check and shutdown netxen: fix deadlock on dev close netxen: fix context deletion sequence net: Micrel KS8851 SPI network driver tcp: Use correct peer adr when copying MD5 keys tcp: Fix MD5 signature checking on IPv4 mapped sockets ...
Diffstat (limited to 'net')
-rw-r--r--net/can/bcm.c4
-rw-r--r--net/can/raw.c4
-rw-r--r--net/core/sock.c22
-rw-r--r--net/ipv4/tcp_ipv4.c3
-rw-r--r--net/ipv4/tcp_output.c2
-rw-r--r--net/ipv6/tcp_ipv6.c3
-rw-r--r--net/netfilter/nf_conntrack_core.c21
-rw-r--r--net/netfilter/xt_osf.c5
8 files changed, 53 insertions, 11 deletions
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 95d7f32643ae..72720c710351 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -75,6 +75,7 @@ static __initdata const char banner[] = KERN_INFO
MODULE_DESCRIPTION("PF_CAN broadcast manager protocol");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Oliver Hartkopp <oliver.hartkopp@volkswagen.de>");
+MODULE_ALIAS("can-proto-2");
/* easy access to can_frame payload */
static inline u64 GET_U64(const struct can_frame *cp)
@@ -1469,6 +1470,9 @@ static int bcm_release(struct socket *sock)
bo->ifindex = 0;
}
+ sock_orphan(sk);
+ sock->sk = NULL;
+
release_sock(sk);
sock_put(sk);
diff --git a/net/can/raw.c b/net/can/raw.c
index 6aa154e806ae..f4cc44548bda 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -62,6 +62,7 @@ static __initdata const char banner[] =
MODULE_DESCRIPTION("PF_CAN raw protocol");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_AUTHOR("Urs Thuermann <urs.thuermann@volkswagen.de>");
+MODULE_ALIAS("can-proto-1");
#define MASK_ALL 0
@@ -306,6 +307,9 @@ static int raw_release(struct socket *sock)
ro->bound = 0;
ro->count = 0;
+ sock_orphan(sk);
+ sock->sk = NULL;
+
release_sock(sk);
sock_put(sk);
diff --git a/net/core/sock.c b/net/core/sock.c
index ba5d2116aea1..bbb25be7ddfe 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -631,7 +631,7 @@ set_rcvbuf:
case SO_TIMESTAMPING:
if (val & ~SOF_TIMESTAMPING_MASK) {
- ret = EINVAL;
+ ret = -EINVAL;
break;
}
sock_valbool_flag(sk, SOCK_TIMESTAMPING_TX_HARDWARE,
@@ -919,13 +919,19 @@ static inline void sock_lock_init(struct sock *sk)
af_family_keys + sk->sk_family);
}
+/*
+ * Copy all fields from osk to nsk but nsk->sk_refcnt must not change yet,
+ * even temporarly, because of RCU lookups. sk_node should also be left as is.
+ */
static void sock_copy(struct sock *nsk, const struct sock *osk)
{
#ifdef CONFIG_SECURITY_NETWORK
void *sptr = nsk->sk_security;
#endif
-
- memcpy(nsk, osk, osk->sk_prot->obj_size);
+ BUILD_BUG_ON(offsetof(struct sock, sk_copy_start) !=
+ sizeof(osk->sk_node) + sizeof(osk->sk_refcnt));
+ memcpy(&nsk->sk_copy_start, &osk->sk_copy_start,
+ osk->sk_prot->obj_size - offsetof(struct sock, sk_copy_start));
#ifdef CONFIG_SECURITY_NETWORK
nsk->sk_security = sptr;
security_sk_clone(osk, nsk);
@@ -1140,6 +1146,11 @@ struct sock *sk_clone(const struct sock *sk, const gfp_t priority)
newsk->sk_err = 0;
newsk->sk_priority = 0;
+ /*
+ * Before updating sk_refcnt, we must commit prior changes to memory
+ * (Documentation/RCU/rculist_nulls.txt for details)
+ */
+ smp_wmb();
atomic_set(&newsk->sk_refcnt, 2);
/*
@@ -1855,6 +1866,11 @@ void sock_init_data(struct socket *sock, struct sock *sk)
sk->sk_stamp = ktime_set(-1L, 0);
+ /*
+ * Before updating sk_refcnt, we must commit prior changes to memory
+ * (Documentation/RCU/rculist_nulls.txt for details)
+ */
+ smp_wmb();
atomic_set(&sk->sk_refcnt, 1);
atomic_set(&sk->sk_wmem_alloc, 1);
atomic_set(&sk->sk_drops, 0);
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 5a1ca2698c88..6d88219c5e22 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1160,6 +1160,7 @@ struct request_sock_ops tcp_request_sock_ops __read_mostly = {
#ifdef CONFIG_TCP_MD5SIG
static struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
.md5_lookup = tcp_v4_reqsk_md5_lookup,
+ .calc_md5_hash = tcp_v4_md5_hash_skb,
};
#endif
@@ -1373,7 +1374,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
*/
char *newkey = kmemdup(key->key, key->keylen, GFP_ATOMIC);
if (newkey != NULL)
- tcp_v4_md5_do_add(newsk, inet_sk(sk)->daddr,
+ tcp_v4_md5_do_add(newsk, newinet->daddr,
newkey, key->keylen);
newsk->sk_route_caps &= ~NETIF_F_GSO_MASK;
}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 5bdf08d312d9..bd62712848fa 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -2261,7 +2261,7 @@ struct sk_buff *tcp_make_synack(struct sock *sk, struct dst_entry *dst,
#ifdef CONFIG_TCP_MD5SIG
/* Okay, we have all we need - do the md5 hash if needed */
if (md5) {
- tp->af_specific->calc_md5_hash(md5_hash_location,
+ tcp_rsk(req)->af_specific->calc_md5_hash(md5_hash_location,
md5, NULL, req, skb);
}
#endif
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 58810c65b635..d849dd53b788 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -896,6 +896,7 @@ struct request_sock_ops tcp6_request_sock_ops __read_mostly = {
#ifdef CONFIG_TCP_MD5SIG
static struct tcp_request_sock_ops tcp_request_sock_ipv6_ops = {
.md5_lookup = tcp_v6_reqsk_md5_lookup,
+ .calc_md5_hash = tcp_v6_md5_hash_skb,
};
#endif
@@ -1441,7 +1442,7 @@ static struct sock * tcp_v6_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
*/
char *newkey = kmemdup(key->key, key->keylen, GFP_ATOMIC);
if (newkey != NULL)
- tcp_v6_md5_do_add(newsk, &inet6_sk(sk)->daddr,
+ tcp_v6_md5_do_add(newsk, &newnp->daddr,
newkey, key->keylen);
}
#endif
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 7508f11c5b39..b5869b9574b0 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -561,23 +561,38 @@ struct nf_conn *nf_conntrack_alloc(struct net *net,
}
}
- ct = kmem_cache_zalloc(nf_conntrack_cachep, gfp);
+ /*
+ * Do not use kmem_cache_zalloc(), as this cache uses
+ * SLAB_DESTROY_BY_RCU.
+ */
+ ct = kmem_cache_alloc(nf_conntrack_cachep, gfp);
if (ct == NULL) {
pr_debug("nf_conntrack_alloc: Can't alloc conntrack.\n");
atomic_dec(&net->ct.count);
return ERR_PTR(-ENOMEM);
}
-
+ /*
+ * Let ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode.next
+ * and ct->tuplehash[IP_CT_DIR_REPLY].hnnode.next unchanged.
+ */
+ memset(&ct->tuplehash[IP_CT_DIR_MAX], 0,
+ sizeof(*ct) - offsetof(struct nf_conn, tuplehash[IP_CT_DIR_MAX]));
spin_lock_init(&ct->lock);
- atomic_set(&ct->ct_general.use, 1);
ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple = *orig;
+ ct->tuplehash[IP_CT_DIR_ORIGINAL].hnnode.pprev = NULL;
ct->tuplehash[IP_CT_DIR_REPLY].tuple = *repl;
+ ct->tuplehash[IP_CT_DIR_REPLY].hnnode.pprev = NULL;
/* Don't set timer yet: wait for confirmation */
setup_timer(&ct->timeout, death_by_timeout, (unsigned long)ct);
#ifdef CONFIG_NET_NS
ct->ct_net = net;
#endif
+ /*
+ * changes to lookup keys must be done before setting refcnt to 1
+ */
+ smp_wmb();
+ atomic_set(&ct->ct_general.use, 1);
return ct;
}
EXPORT_SYMBOL_GPL(nf_conntrack_alloc);
diff --git a/net/netfilter/xt_osf.c b/net/netfilter/xt_osf.c
index 863e40977a4d..0f482e2440b4 100644
--- a/net/netfilter/xt_osf.c
+++ b/net/netfilter/xt_osf.c
@@ -330,7 +330,8 @@ static bool xt_osf_match_packet(const struct sk_buff *skb,
fcount++;
if (info->flags & XT_OSF_LOG)
- nf_log_packet(p->hooknum, 0, skb, p->in, p->out, NULL,
+ nf_log_packet(p->family, p->hooknum, skb,
+ p->in, p->out, NULL,
"%s [%s:%s] : %pi4:%d -> %pi4:%d hops=%d\n",
f->genre, f->version, f->subtype,
&ip->saddr, ntohs(tcp->source),
@@ -345,7 +346,7 @@ static bool xt_osf_match_packet(const struct sk_buff *skb,
rcu_read_unlock();
if (!fcount && (info->flags & XT_OSF_LOG))
- nf_log_packet(p->hooknum, 0, skb, p->in, p->out, NULL,
+ nf_log_packet(p->family, p->hooknum, skb, p->in, p->out, NULL,
"Remote OS is not known: %pi4:%u -> %pi4:%u\n",
&ip->saddr, ntohs(tcp->source),
&ip->daddr, ntohs(tcp->dest));