14 files changed, 80 insertions, 78 deletions

diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 7794a2e2adce..99d68c34e4f1 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1002,7 +1002,8 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
 
         BT_DBG("sk %p", sk);
 
-        if (!addr || addr->sa_family != AF_BLUETOOTH)
+        if (!addr || alen < sizeof(addr->sa_family) ||
+            addr->sa_family != AF_BLUETOOTH)
                 return -EINVAL;
 
         memset(&la, 0, sizeof(la));
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 7f439765403d..8ed3c37684fa 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -397,7 +397,8 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a
 
         BT_DBG("sk %p", sk);
 
-        if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_rc))
+        if (alen < sizeof(struct sockaddr_rc) ||
+            addr->sa_family != AF_BLUETOOTH)
                 return -EINVAL;
 
         lock_sock(sk);
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index e5b16b76b22e..ca6b2ad1c3fc 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -499,7 +499,8 @@ static int sco_sock_connect(struct socket *sock, struct sockaddr *addr, int alen
 
         BT_DBG("sk %p", sk);
 
-        if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_sco))
+        if (alen < sizeof(struct sockaddr_sco) ||
+            addr->sa_family != AF_BLUETOOTH)
                 return -EINVAL;
 
         if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
diff --git a/net/can/bcm.c b/net/can/bcm.c
index a2dee522b43e..907dc871fac8 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -1479,6 +1479,9 @@ static int bcm_connect(struct socket *sock, struct sockaddr *uaddr, int len,
         struct sock *sk = sock->sk;
         struct bcm_sock *bo = bcm_sk(sk);
 
+        if (len < sizeof(*addr))
+                return -EINVAL;
+
         if (bo->bound)
                 return -EISCONN;
 
diff --git a/net/ieee802154/af_ieee802154.c b/net/ieee802154/af_ieee802154.c
index 79886d546bab..c7da600750bb 100644
--- a/net/ieee802154/af_ieee802154.c
+++ b/net/ieee802154/af_ieee802154.c
@@ -127,6 +127,9 @@ static int ieee802154_sock_connect(struct socket *sock, struct sockaddr *uaddr,
 {
         struct sock *sk = sock->sk;
 
+        if (addr_len < sizeof(uaddr->sa_family))
+                return -EINVAL;
+
         if (uaddr->sa_family == AF_UNSPEC)
                 return sk->sk_prot->disconnect(sk, flags);
 
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 2ed85714540f..f71357422380 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -531,6 +531,8 @@ int inet_dgram_connect(struct socket *sock, struct sockaddr * uaddr,
 {
         struct sock *sk = sock->sk;
 
+        if (addr_len < sizeof(uaddr->sa_family))
+                return -EINVAL;
         if (uaddr->sa_family == AF_UNSPEC)
                 return sk->sk_prot->disconnect(sk, flags);
 
@@ -574,6 +576,9 @@ int inet_stream_connect(struct socket *sock, struct sockaddr *uaddr,
         int err;
         long timeo;
 
+        if (addr_len < sizeof(uaddr->sa_family))
+                return -EINVAL;
+
         lock_sock(sk);
 
         if (uaddr->sa_family == AF_UNSPEC) {
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 7a1f1d78893f..0f8caf64caa3 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -1369,6 +1369,7 @@ int tcp_read_sock(struct sock *sk, read_descriptor_t *desc,
                 sk_eat_skb(sk, skb, 0);
                 if (!desc->count)
                         break;
+                tp->copied_seq = seq;
         }
         tp->copied_seq = seq;
 
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index 122c11380ffe..fefc45c4b4e8 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -392,7 +392,7 @@ static u32 hwmp_route_info_get(struct ieee80211_sub_if_data *sdata,
                                 if (SN_GT(mpath->sn, orig_sn) ||
                                     (mpath->sn == orig_sn &&
                                      action == MPATH_PREQ &&
-                                     new_metric > mpath->metric)) {
+                                     new_metric >= mpath->metric)) {
                                         process = false;
                                         fresh_info = false;
                                 }
@@ -612,7 +612,7 @@ static void hwmp_prep_frame_process(struct ieee80211_sub_if_data *sdata,
 
         mesh_path_sel_frame_tx(MPATH_PREP, flags, orig_addr,
                 cpu_to_le32(orig_sn), 0, target_addr,
-                cpu_to_le32(target_sn), mpath->next_hop->sta.addr, hopcount,
+                cpu_to_le32(target_sn), next_hop, hopcount,
                 ttl, cpu_to_le32(lifetime), cpu_to_le32(metric),
                 0, sdata);
         rcu_read_unlock();
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index cbe53ed4fb0b..cfc473e1b050 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1991,6 +1991,7 @@ static bool ieee80211_tx_pending_skb(struct ieee80211_local *local,
 void ieee80211_tx_pending(unsigned long data)
 {
         struct ieee80211_local *local = (struct ieee80211_local *)data;
+        struct ieee80211_sub_if_data *sdata;
         unsigned long flags;
         int i;
         bool txok;
@@ -2029,6 +2030,11 @@ void ieee80211_tx_pending(unsigned long data)
                         if (!txok)
                                 break;
                 }
+
+                if (skb_queue_empty(&local->pending[i]))
+                        list_for_each_entry_rcu(sdata, &local->interfaces, list)
+                                netif_tx_wake_queue(
+                                        netdev_get_tx_queue(sdata->dev, i));
         }
         spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
 
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index c453226f06b2..53af57047435 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -279,13 +279,13 @@ static void __ieee80211_wake_queue(struct ieee80211_hw *hw, int queue,
                 /* someone still has this queue stopped */
                 return;
 
-        if (!skb_queue_empty(&local->pending[queue]))
+        if (skb_queue_empty(&local->pending[queue])) {
+                rcu_read_lock();
+                list_for_each_entry_rcu(sdata, &local->interfaces, list)
+                        netif_tx_wake_queue(netdev_get_tx_queue(sdata->dev, queue));
+                rcu_read_unlock();
+        } else
                 tasklet_schedule(&local->tx_pending_tasklet);
-
-        rcu_read_lock();
-        list_for_each_entry_rcu(sdata, &local->interfaces, list)
-                netif_tx_wake_queue(netdev_get_tx_queue(sdata->dev, queue));
-        rcu_read_unlock();
 }
 
 void ieee80211_wake_queue_by_reason(struct ieee80211_hw *hw, int queue,
@@ -1097,9 +1097,9 @@ int ieee80211_reconfig(struct ieee80211_local *local)
                  */
                 res = drv_start(local);
                 if (res) {
-                        WARN(local->suspended, "Harware became unavailable "
-                             "upon resume. This is could be a software issue"
-                             "prior to suspend or a hardware issue\n");
+                        WARN(local->suspended, "Hardware became unavailable "
+                             "upon resume. This could be a software issue "
+                             "prior to suspend or a hardware issue.\n");
                         return res;
                 }
 
diff --git a/net/netlabel/netlabel_domainhash.c b/net/netlabel/netlabel_domainhash.c
index 016ab9c75ebd..d37b7f80fa37 100644
--- a/net/netlabel/netlabel_domainhash.c
+++ b/net/netlabel/netlabel_domainhash.c
@@ -51,9 +51,12 @@ struct netlbl_domhsh_tbl {
 };
 
 /* Domain hash table */
-/* XXX - updates should be so rare that having one spinlock for the entire
- * hash table should be okay */
+/* updates should be so rare that having one spinlock for the entire hash table
+ * should be okay */
 static DEFINE_SPINLOCK(netlbl_domhsh_lock);
+#define netlbl_domhsh_rcu_deref(p) \
+        rcu_dereference_check(p, rcu_read_lock_held() || \
+                                 lockdep_is_held(&netlbl_domhsh_lock))
 static struct netlbl_domhsh_tbl *netlbl_domhsh = NULL;
 static struct netlbl_dom_map *netlbl_domhsh_def = NULL;
 
@@ -107,7 +110,8 @@ static void netlbl_domhsh_free_entry(struct rcu_head *entry)
  * Description:
  * This is the hashing function for the domain hash table, it returns the
  * correct bucket number for the domain.  The caller is responsibile for
- * calling the rcu_read_[un]lock() functions.
+ * ensuring that the hash table is protected with either a RCU read lock or the
+ * hash table lock.
  *
  */
 static u32 netlbl_domhsh_hash(const char *key)
@@ -121,7 +125,7 @@ static u32 netlbl_domhsh_hash(const char *key)
 
         for (iter = 0, val = 0, len = strlen(key); iter < len; iter++)
                 val = (val << 4 | (val >> (8 * sizeof(u32) - 4))) ^ key[iter];
-        return val & (rcu_dereference(netlbl_domhsh)->size - 1);
+        return val & (netlbl_domhsh_rcu_deref(netlbl_domhsh)->size - 1);
 }
 
 /**
@@ -131,7 +135,8 @@ static u32 netlbl_domhsh_hash(const char *key)
  * Description:
  * Searches the domain hash table and returns a pointer to the hash table
  * entry if found, otherwise NULL is returned.  The caller is responsibile for
- * the rcu hash table locks (i.e. the caller much call rcu_read_[un]lock()).
+ * ensuring that the hash table is protected with either a RCU read lock or the
+ * hash table lock.
  *
  */
 static struct netlbl_dom_map *netlbl_domhsh_search(const char *domain)
@@ -142,7 +147,7 @@ static struct netlbl_dom_map *netlbl_domhsh_search(const char *domain)
 
         if (domain != NULL) {
                 bkt = netlbl_domhsh_hash(domain);
-                bkt_list = &rcu_dereference(netlbl_domhsh)->tbl[bkt];
+                bkt_list = &netlbl_domhsh_rcu_deref(netlbl_domhsh)->tbl[bkt];
                 list_for_each_entry_rcu(iter, bkt_list, list)
                         if (iter->valid && strcmp(iter->domain, domain) == 0)
                                 return iter;
@@ -160,8 +165,8 @@ static struct netlbl_dom_map *netlbl_domhsh_search(const char *domain)
  * Searches the domain hash table and returns a pointer to the hash table
  * entry if an exact match is found, if an exact match is not present in the
  * hash table then the default entry is returned if valid otherwise NULL is
- * returned.  The caller is responsibile for the rcu hash table locks
- * (i.e. the caller much call rcu_read_[un]lock()).
+ * returned.  The caller is responsibile ensuring that the hash table is
+ * protected with either a RCU read lock or the hash table lock.
  *
  */
 static struct netlbl_dom_map *netlbl_domhsh_search_def(const char *domain)
@@ -170,7 +175,7 @@ static struct netlbl_dom_map *netlbl_domhsh_search_def(const char *domain)
 
         entry = netlbl_domhsh_search(domain);
         if (entry == NULL) {
-                entry = rcu_dereference(netlbl_domhsh_def);
+                entry = netlbl_domhsh_rcu_deref(netlbl_domhsh_def);
                 if (entry != NULL && !entry->valid)
                         entry = NULL;
         }
@@ -307,8 +312,11 @@ int netlbl_domhsh_add(struct netlbl_dom_map *entry,
         struct netlbl_af6list *tmp6;
 #endif /* IPv6 */
 
+        /* XXX - we can remove this RCU read lock as the spinlock protects the
+         *       entire function, but before we do we need to fixup the
+         *       netlbl_af[4,6]list RCU functions to do "the right thing" with
+         *       respect to rcu_dereference() when only a spinlock is held. */
         rcu_read_lock();
-
         spin_lock(&netlbl_domhsh_lock);
         if (entry->domain != NULL)
                 entry_old = netlbl_domhsh_search(entry->domain);
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index d7ea2cf390b7..a3d64aabe2f7 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -115,6 +115,9 @@ struct netlbl_unlhsh_walk_arg {
 /* updates should be so rare that having one spinlock for the entire
  * hash table should be okay */
 static DEFINE_SPINLOCK(netlbl_unlhsh_lock);
+#define netlbl_unlhsh_rcu_deref(p) \
+        rcu_dereference_check(p, rcu_read_lock_held() || \
+                                 lockdep_is_held(&netlbl_unlhsh_lock))
 static struct netlbl_unlhsh_tbl *netlbl_unlhsh = NULL;
 static struct netlbl_unlhsh_iface *netlbl_unlhsh_def = NULL;
 
@@ -236,15 +239,13 @@ static void netlbl_unlhsh_free_iface(struct rcu_head *entry)
  * Description:
  * This is the hashing function for the unlabeled hash table, it returns the
  * bucket number for the given device/interface.  The caller is responsible for
- * calling the rcu_read_[un]lock() functions.
+ * ensuring that the hash table is protected with either a RCU read lock or
+ * the hash table lock.
  *
  */
 static u32 netlbl_unlhsh_hash(int ifindex)
 {
-        /* this is taken _almost_ directly from
-         * security/selinux/netif.c:sel_netif_hasfn() as they do pretty much
-         * the same thing */
-        return ifindex & (rcu_dereference(netlbl_unlhsh)->size - 1);
+        return ifindex & (netlbl_unlhsh_rcu_deref(netlbl_unlhsh)->size - 1);
 }
 
 /**
@@ -254,7 +255,8 @@ static u32 netlbl_unlhsh_hash(int ifindex)
  * Description:
  * Searches the unlabeled connection hash table and returns a pointer to the
  * interface entry which matches @ifindex, otherwise NULL is returned.  The
- * caller is responsible for calling the rcu_read_[un]lock() functions.
+ * caller is responsible for ensuring that the hash table is protected with
+ * either a RCU read lock or the hash table lock.
  *
  */
 static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface(int ifindex)
@@ -264,7 +266,7 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface(int ifindex)
         struct netlbl_unlhsh_iface *iter;
 
         bkt = netlbl_unlhsh_hash(ifindex);
-        bkt_list = &rcu_dereference(netlbl_unlhsh)->tbl[bkt];
+        bkt_list = &netlbl_unlhsh_rcu_deref(netlbl_unlhsh)->tbl[bkt];
         list_for_each_entry_rcu(iter, bkt_list, list)
                 if (iter->valid && iter->ifindex == ifindex)
                         return iter;
@@ -273,33 +275,6 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface(int ifindex)
 }
 
 /**
- * netlbl_unlhsh_search_iface_def - Search for a matching interface entry
- * @ifindex: the network interface
- *
- * Description:
- * Searches the unlabeled connection hash table and returns a pointer to the
- * interface entry which matches @ifindex.  If an exact match can not be found
- * and there is a valid default entry, the default entry is returned, otherwise
- * NULL is returned.  The caller is responsible for calling the
- * rcu_read_[un]lock() functions.
- *
- */
-static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface_def(int ifindex)
-{
-        struct netlbl_unlhsh_iface *entry;
-
-        entry = netlbl_unlhsh_search_iface(ifindex);
-        if (entry != NULL)
-                return entry;
-
-        entry = rcu_dereference(netlbl_unlhsh_def);
-        if (entry != NULL && entry->valid)
-                return entry;
-
-        return NULL;
-}
-
-/**
  * netlbl_unlhsh_add_addr4 - Add a new IPv4 address entry to the hash table
  * @iface: the associated interface entry
  * @addr: IPv4 address in network byte order
@@ -309,8 +284,7 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_search_iface_def(int ifindex)
  * Description:
  * Add a new address entry into the unlabeled connection hash table using the
  * interface entry specified by @iface.  On success zero is returned, otherwise
- * a negative value is returned.  The caller is responsible for calling the
- * rcu_read_[un]lock() functions.
+ * a negative value is returned.
  *
  */
 static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface,
@@ -350,8 +324,7 @@ static int netlbl_unlhsh_add_addr4(struct netlbl_unlhsh_iface *iface,
  * Description:
  * Add a new address entry into the unlabeled connection hash table using the
  * interface entry specified by @iface.  On success zero is returned, otherwise
- * a negative value is returned.  The caller is responsible for calling the
- * rcu_read_[un]lock() functions.
+ * a negative value is returned.
  *
  */
 static int netlbl_unlhsh_add_addr6(struct netlbl_unlhsh_iface *iface,
@@ -392,8 +365,7 @@ static int netlbl_unlhsh_add_addr6(struct netlbl_unlhsh_iface *iface,
  * Description:
  * Add a new, empty, interface entry into the unlabeled connection hash table.
  * On success a pointer to the new interface entry is returned, on failure NULL
- * is returned.  The caller is responsible for calling the rcu_read_[un]lock()
- * functions.
+ * is returned.
  *
  */
 static struct netlbl_unlhsh_iface *netlbl_unlhsh_add_iface(int ifindex)
@@ -416,10 +388,10 @@ static struct netlbl_unlhsh_iface *netlbl_unlhsh_add_iface(int ifindex)
                 if (netlbl_unlhsh_search_iface(ifindex) != NULL)
                         goto add_iface_failure;
                 list_add_tail_rcu(&iface->list,
-                                  &rcu_dereference(netlbl_unlhsh)->tbl[bkt]);
+                             &netlbl_unlhsh_rcu_deref(netlbl_unlhsh)->tbl[bkt]);
         } else {
                 INIT_LIST_HEAD(&iface->list);
-                if (rcu_dereference(netlbl_unlhsh_def) != NULL)
+                if (netlbl_unlhsh_rcu_deref(netlbl_unlhsh_def) != NULL)
                         goto add_iface_failure;
                 rcu_assign_pointer(netlbl_unlhsh_def, iface);
         }
@@ -549,8 +521,7 @@ unlhsh_add_return:
  *
  * Description:
  * Remove an IP address entry from the unlabeled connection hash table.
- * Returns zero on success, negative values on failure.  The caller is
- * responsible for calling the rcu_read_[un]lock() functions.
+ * Returns zero on success, negative values on failure.
  *
  */
 static int netlbl_unlhsh_remove_addr4(struct net *net,
@@ -612,8 +583,7 @@ static int netlbl_unlhsh_remove_addr4(struct net *net,
  *
  * Description:
  * Remove an IP address entry from the unlabeled connection hash table.
- * Returns zero on success, negative values on failure.  The caller is
- * responsible for calling the rcu_read_[un]lock() functions.
+ * Returns zero on success, negative values on failure.
  *
  */
 static int netlbl_unlhsh_remove_addr6(struct net *net,
@@ -1548,8 +1518,10 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb,
         struct netlbl_unlhsh_iface *iface;
 
         rcu_read_lock();
-        iface = netlbl_unlhsh_search_iface_def(skb->skb_iif);
+        iface = netlbl_unlhsh_search_iface(skb->skb_iif);
         if (iface == NULL)
+                iface = rcu_dereference(netlbl_unlhsh_def);
+        if (iface == NULL || !iface->valid)
                 goto unlabel_getattr_nolabel;
         switch (family) {
         case PF_INET: {
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index acbbae1e89b5..795424396aff 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -683,6 +683,9 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
         struct netlink_sock *nlk = nlk_sk(sk);
         struct sockaddr_nl *nladdr = (struct sockaddr_nl *)addr;
 
+        if (alen < sizeof(addr->sa_family))
+                return -EINVAL;
+
         if (addr->sa_family == AF_UNSPEC) {
                 sk->sk_state    = NETLINK_UNCONNECTED;
                 nlk->dst_pid    = 0;
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index b7604b823f46..422da20d1e5b 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -325,7 +325,7 @@ struct reg_regdb_search_request {
 };
 
 static LIST_HEAD(reg_regdb_search_list);
-static DEFINE_SPINLOCK(reg_regdb_search_lock);
+static DEFINE_MUTEX(reg_regdb_search_mutex);
 
 static void reg_regdb_search(struct work_struct *work)
 {
@@ -333,7 +333,7 @@ static void reg_regdb_search(struct work_struct *work)
         const struct ieee80211_regdomain *curdom, *regdom;
         int i, r;
 
-        spin_lock(&reg_regdb_search_lock);
+        mutex_lock(&reg_regdb_search_mutex);
         while (!list_empty(&reg_regdb_search_list)) {
                 request = list_first_entry(&reg_regdb_search_list,
                                            struct reg_regdb_search_request,
@@ -347,18 +347,16 @@ static void reg_regdb_search(struct work_struct *work)
                                 r = reg_copy_regd(&regdom, curdom);
                                 if (r)
                                         break;
-                                spin_unlock(&reg_regdb_search_lock);
                                 mutex_lock(&cfg80211_mutex);
                                 set_regdom(regdom);
                                 mutex_unlock(&cfg80211_mutex);
-                                spin_lock(&reg_regdb_search_lock);
                                 break;
                         }
                 }
 
                 kfree(request);
         }
-        spin_unlock(&reg_regdb_search_lock);
+        mutex_unlock(&reg_regdb_search_mutex);
 }
 
 static DECLARE_WORK(reg_regdb_work, reg_regdb_search);
@@ -376,9 +374,9 @@ static void reg_regdb_query(const char *alpha2)
 
         memcpy(request->alpha2, alpha2, 2);
 
-        spin_lock(&reg_regdb_search_lock);
+        mutex_lock(&reg_regdb_search_mutex);
         list_add_tail(&request->list, &reg_regdb_search_list);
-        spin_unlock(&reg_regdb_search_lock);
+        mutex_unlock(&reg_regdb_search_mutex);
 
         schedule_work(&reg_regdb_work);
 }