Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net

Version bump conflict in batman-adv, take what's in net-next.

iavf conflict, adjustment of netdev_ops in net-next conflicting
with poll controller method removal in net.

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

24 files changed, 183 insertions, 91 deletions

diff --git a/net/batman-adv/bat_v_elp.c b/net/batman-adv/bat_v_elp.c
index 71c20c1d4002..9f481cfdf77d 100644
--- a/net/batman-adv/bat_v_elp.c
+++ b/net/batman-adv/bat_v_elp.c
@@ -241,7 +241,7 @@ batadv_v_elp_wifi_neigh_probe(struct batadv_hardif_neigh_node *neigh)
 		 * the packet to be exactly of that size to make the link
 		 * throughput estimation effective.
 		 */
-		skb_put(skb, probe_len - hard_iface->bat_v.elp_skb->len);
+		skb_put_zero(skb, probe_len - hard_iface->bat_v.elp_skb->len);
 
 		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 			   "Sending unicast (probe) ELP packet on interface %s to %pM\n",
@@ -268,6 +268,7 @@ static void batadv_v_elp_periodic_work(struct work_struct *work)
 	struct batadv_priv *bat_priv;
 	struct sk_buff *skb;
 	u32 elp_interval;
+	bool ret;
 
 	bat_v = container_of(work, struct batadv_hard_iface_bat_v, elp_wq.work);
 	hard_iface = container_of(bat_v, struct batadv_hard_iface, bat_v);
@@ -329,8 +330,11 @@ static void batadv_v_elp_periodic_work(struct work_struct *work)
 		 * may sleep and that is not allowed in an rcu protected
 		 * context. Therefore schedule a task for that.
 		 */
-		queue_work(batadv_event_workqueue,
-			   &hardif_neigh->bat_v.metric_work);
+		ret = queue_work(batadv_event_workqueue,
+				 &hardif_neigh->bat_v.metric_work);
+
+		if (!ret)
+			batadv_hardif_neigh_put(hardif_neigh);
 	}
 	rcu_read_unlock();
 
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index ff9659af6b91..5f1aeeded0e3 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1772,6 +1772,7 @@ batadv_bla_loopdetect_check(struct batadv_priv *bat_priv, struct sk_buff *skb,
 {
 	struct batadv_bla_backbone_gw *backbone_gw;
 	struct ethhdr *ethhdr;
+	bool ret;
 
 	ethhdr = eth_hdr(skb);
 
@@ -1795,8 +1796,13 @@ batadv_bla_loopdetect_check(struct batadv_priv *bat_priv, struct sk_buff *skb,
 	if (unlikely(!backbone_gw))
 		return true;
 
-	queue_work(batadv_event_workqueue, &backbone_gw->report_work);
-	/* backbone_gw is unreferenced in the report work function function */
+	ret = queue_work(batadv_event_workqueue, &backbone_gw->report_work);
+
+	/* backbone_gw is unreferenced in the report work function function
+	 * if queue_work() call was successful
+	 */
+	if (!ret)
+		batadv_backbone_gw_put(backbone_gw);
 
 	return true;
 }
diff --git a/net/batman-adv/gateway_client.c b/net/batman-adv/gateway_client.c
index 8b198ee798c9..140c61a3f1ec 100644
--- a/net/batman-adv/gateway_client.c
+++ b/net/batman-adv/gateway_client.c
@@ -32,6 +32,7 @@
 #include <linux/kernel.h>
 #include <linux/kref.h>
 #include <linux/list.h>
+#include <linux/lockdep.h>
 #include <linux/netdevice.h>
 #include <linux/netlink.h>
 #include <linux/rculist.h>
@@ -348,6 +349,9 @@ out:
  * @bat_priv: the bat priv with all the soft interface information
  * @orig_node: originator announcing gateway capabilities
  * @gateway: announced bandwidth information
+ *
+ * Has to be called with the appropriate locks being acquired
+ * (gw.list_lock).
  */
 static void batadv_gw_node_add(struct batadv_priv *bat_priv,
 			       struct batadv_orig_node *orig_node,
@@ -355,6 +359,8 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
 {
 	struct batadv_gw_node *gw_node;
 
+	lockdep_assert_held(&bat_priv->gw.list_lock);
+
 	if (gateway->bandwidth_down == 0)
 		return;
 
@@ -369,10 +375,8 @@ static void batadv_gw_node_add(struct batadv_priv *bat_priv,
 	gw_node->bandwidth_down = ntohl(gateway->bandwidth_down);
 	gw_node->bandwidth_up = ntohl(gateway->bandwidth_up);
 
-	spin_lock_bh(&bat_priv->gw.list_lock);
 	kref_get(&gw_node->refcount);
 	hlist_add_head_rcu(&gw_node->list, &bat_priv->gw.gateway_list);
-	spin_unlock_bh(&bat_priv->gw.list_lock);
 
 	batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 		   "Found new gateway %pM -> gw bandwidth: %u.%u/%u.%u MBit\n",
@@ -428,11 +432,14 @@ void batadv_gw_node_update(struct batadv_priv *bat_priv,
 {
 	struct batadv_gw_node *gw_node, *curr_gw = NULL;
 
+	spin_lock_bh(&bat_priv->gw.list_lock);
 	gw_node = batadv_gw_node_get(bat_priv, orig_node);
 	if (!gw_node) {
 		batadv_gw_node_add(bat_priv, orig_node, gateway);
+		spin_unlock_bh(&bat_priv->gw.list_lock);
 		goto out;
 	}
+	spin_unlock_bh(&bat_priv->gw.list_lock);
 
 	if (gw_node->bandwidth_down == ntohl(gateway->bandwidth_down) &&
 	    gw_node->bandwidth_up == ntohl(gateway->bandwidth_up))
diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index c3578444f3cb..34caf129a9bf 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -854,16 +854,27 @@ batadv_nc_get_nc_node(struct batadv_priv *bat_priv,
 	spinlock_t *lock; /* Used to lock list selected by "int in_coding" */
 	struct list_head *list;
 
+	/* Select ingoing or outgoing coding node */
+	if (in_coding) {
+		lock = &orig_neigh_node->in_coding_list_lock;
+		list = &orig_neigh_node->in_coding_list;
+	} else {
+		lock = &orig_neigh_node->out_coding_list_lock;
+		list = &orig_neigh_node->out_coding_list;
+	}
+
+	spin_lock_bh(lock);
+
 	/* Check if nc_node is already added */
 	nc_node = batadv_nc_find_nc_node(orig_node, orig_neigh_node, in_coding);
 
 	/* Node found */
 	if (nc_node)
-		return nc_node;
+		goto unlock;
 
 	nc_node = kzalloc(sizeof(*nc_node), GFP_ATOMIC);
 	if (!nc_node)
-		return NULL;
+		goto unlock;
 
 	/* Initialize nc_node */
 	INIT_LIST_HEAD(&nc_node->list);
@@ -872,22 +883,14 @@ batadv_nc_get_nc_node(struct batadv_priv *bat_priv,
 	kref_get(&orig_neigh_node->refcount);
 	nc_node->orig_node = orig_neigh_node;
 
-	/* Select ingoing or outgoing coding node */
-	if (in_coding) {
-		lock = &orig_neigh_node->in_coding_list_lock;
-		list = &orig_neigh_node->in_coding_list;
-	} else {
-		lock = &orig_neigh_node->out_coding_list_lock;
-		list = &orig_neigh_node->out_coding_list;
-	}
-
 	batadv_dbg(BATADV_DBG_NC, bat_priv, "Adding nc_node %pM -> %pM\n",
 		   nc_node->addr, nc_node->orig_node->orig);
 
 	/* Add nc_node to orig_node */
-	spin_lock_bh(lock);
 	kref_get(&nc_node->refcount);
 	list_add_tail_rcu(&nc_node->list, list);
+
+unlock:
 	spin_unlock_bh(lock);
 
 	return nc_node;
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 2c7d95727f90..5db5a0a4c959 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -574,15 +574,20 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid)
 	struct batadv_softif_vlan *vlan;
 	int err;
 
+	spin_lock_bh(&bat_priv->softif_vlan_list_lock);
+
 	vlan = batadv_softif_vlan_get(bat_priv, vid);
 	if (vlan) {
 		batadv_softif_vlan_put(vlan);
+		spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
 		return -EEXIST;
 	}
 
 	vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC);
-	if (!vlan)
+	if (!vlan) {
+		spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
 		return -ENOMEM;
+	}
 
 	vlan->bat_priv = bat_priv;
 	vlan->vid = vid;
@@ -590,17 +595,23 @@ int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid)
 
 	atomic_set(&vlan->ap_isolation, 0);
 
+	kref_get(&vlan->refcount);
+	hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list);
+	spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
+
+	/* batadv_sysfs_add_vlan cannot be in the spinlock section due to the
+	 * sleeping behavior of the sysfs functions and the fs_reclaim lock
+	 */
 	err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan);
 	if (err) {
-		kfree(vlan);
+		/* ref for the function */
+		batadv_softif_vlan_put(vlan);
+
+		/* ref for the list */
+		batadv_softif_vlan_put(vlan);
 		return err;
 	}
 
-	spin_lock_bh(&bat_priv->softif_vlan_list_lock);
-	kref_get(&vlan->refcount);
-	hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list);
-	spin_unlock_bh(&bat_priv->softif_vlan_list_lock);
-
 	/* add a new TT local entry. This one will be marked with the NOPURGE
 	 * flag
 	 */
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
index f2eef43bd2ec..09427fc6494a 100644
--- a/net/batman-adv/sysfs.c
+++ b/net/batman-adv/sysfs.c
@@ -188,7 +188,8 @@ ssize_t batadv_store_##_name(struct kobject *kobj,			\
 									\
 	return __batadv_store_uint_attr(buff, count, _min, _max,	\
 					_post_func, attr,		\
-					&bat_priv->_var, net_dev);	\
+					&bat_priv->_var, net_dev,	\
+					NULL);	\
 }
 
 #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var)				\
@@ -262,7 +263,9 @@ ssize_t batadv_store_##_name(struct kobject *kobj,			\
 									\
 	length = __batadv_store_uint_attr(buff, count, _min, _max,	\
 					  _post_func, attr,		\
-					  &hard_iface->_var, net_dev);	\
+					  &hard_iface->_var,		\
+					  hard_iface->soft_iface,	\
+					  net_dev);			\
 									\
 	batadv_hardif_put(hard_iface);				\
 	return length;							\
@@ -356,10 +359,12 @@ __batadv_store_bool_attr(char *buff, size_t count,
 
 static int batadv_store_uint_attr(const char *buff, size_t count,
 				  struct net_device *net_dev,
+				  struct net_device *slave_dev,
 				  const char *attr_name,
 				  unsigned int min, unsigned int max,
 				  atomic_t *attr)
 {
+	char ifname[IFNAMSIZ + 3] = "";
 	unsigned long uint_val;
 	int ret;
 
@@ -385,8 +390,11 @@ static int batadv_store_uint_attr(const char *buff, size_t count,
 	if (atomic_read(attr) == uint_val)
 		return count;
 
-	batadv_info(net_dev, "%s: Changing from: %i to: %lu\n",
-		    attr_name, atomic_read(attr), uint_val);
+	if (slave_dev)
+		snprintf(ifname, sizeof(ifname), "%s: ", slave_dev->name);
+
+	batadv_info(net_dev, "%s: %sChanging from: %i to: %lu\n",
+		    attr_name, ifname, atomic_read(attr), uint_val);
 
 	atomic_set(attr, uint_val);
 	return count;
@@ -397,12 +405,13 @@ static ssize_t __batadv_store_uint_attr(const char *buff, size_t count,
 					void (*post_func)(struct net_device *),
 					const struct attribute *attr,
 					atomic_t *attr_store,
-					struct net_device *net_dev)
+					struct net_device *net_dev,
+					struct net_device *slave_dev)
 {
 	int ret;
 
-	ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max,
-				     attr_store);
+	ret = batadv_store_uint_attr(buff, count, net_dev, slave_dev,
+				     attr->name, min, max, attr_store);
 	if (post_func && ret)
 		post_func(net_dev);
 
@@ -571,7 +580,7 @@ static ssize_t batadv_store_gw_sel_class(struct kobject *kobj,
 	return __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE,
 					batadv_post_gw_reselect, attr,
 					&bat_priv->gw.sel_class,
-					bat_priv->soft_iface);
+					bat_priv->soft_iface, NULL);
 }
 
 static ssize_t batadv_show_gw_bwidth(struct kobject *kobj,
@@ -1090,8 +1099,9 @@ static ssize_t batadv_store_throughput_override(struct kobject *kobj,
 	if (old_tp_override == tp_override)
 		goto out;
 
-	batadv_info(net_dev, "%s: Changing from: %u.%u MBit to: %u.%u MBit\n",
-		    "throughput_override",
+	batadv_info(hard_iface->soft_iface,
+		    "%s: %s: Changing from: %u.%u MBit to: %u.%u MBit\n",
+		    "throughput_override", net_dev->name,
 		    old_tp_override / 10, old_tp_override % 10,
 		    tp_override / 10, tp_override % 10);
 
diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 12a2b7d21376..d21624c44665 100644
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1613,6 +1613,8 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
 {
 	struct batadv_tt_orig_list_entry *orig_entry;
 
+	spin_lock_bh(&tt_global->list_lock);
+
 	orig_entry = batadv_tt_global_orig_entry_find(tt_global, orig_node);
 	if (orig_entry) {
 		/* refresh the ttvn: the current value could be a bogus one that
@@ -1635,11 +1637,9 @@ batadv_tt_global_orig_entry_add(struct batadv_tt_global_entry *tt_global,
 	orig_entry->flags = flags;
 	kref_init(&orig_entry->refcount);
 
-	spin_lock_bh(&tt_global->list_lock);
 	kref_get(&orig_entry->refcount);
 	hlist_add_head_rcu(&orig_entry->list,
 			   &tt_global->orig_list);
-	spin_unlock_bh(&tt_global->list_lock);
 	atomic_inc(&tt_global->orig_list_count);
 
 sync_flags:
@@ -1647,6 +1647,8 @@ sync_flags:
 out:
 	if (orig_entry)
 		batadv_tt_orig_list_entry_put(orig_entry);
+
+	spin_unlock_bh(&tt_global->list_lock);
 }
 
 /**
diff --git a/net/batman-adv/tvlv.c b/net/batman-adv/tvlv.c
index a637458205d1..40e69c9346d2 100644
--- a/net/batman-adv/tvlv.c
+++ b/net/batman-adv/tvlv.c
@@ -529,15 +529,20 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
 {
 	struct batadv_tvlv_handler *tvlv_handler;
 
+	spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
+
 	tvlv_handler = batadv_tvlv_handler_get(bat_priv, type, version);
 	if (tvlv_handler) {
+		spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
 		batadv_tvlv_handler_put(tvlv_handler);
 		return;
 	}
 
 	tvlv_handler = kzalloc(sizeof(*tvlv_handler), GFP_ATOMIC);
-	if (!tvlv_handler)
+	if (!tvlv_handler) {
+		spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
 		return;
+	}
 
 	tvlv_handler->ogm_handler = optr;
 	tvlv_handler->unicast_handler = uptr;
@@ -547,7 +552,6 @@ void batadv_tvlv_handler_register(struct batadv_priv *bat_priv,
 	kref_init(&tvlv_handler->refcount);
 	INIT_HLIST_NODE(&tvlv_handler->list);
 
-	spin_lock_bh(&bat_priv->tvlv.handler_list_lock);
 	kref_get(&tvlv_handler->refcount);
 	hlist_add_head_rcu(&tvlv_handler->list, &bat_priv->tvlv.handler_list);
 	spin_unlock_bh(&bat_priv->tvlv.handler_list_lock);
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 65fc366a78a4..8c0ed225e280 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2592,7 +2592,7 @@ send_done:
 	if (!nlh) {
 		err = devlink_dpipe_send_and_alloc_skb(&skb, info);
 		if (err)
-			goto err_skb_send_alloc;
+			return err;
 		goto send_done;
 	}
 	return genlmsg_reply(skb, info);
@@ -2600,7 +2600,6 @@ send_done:
 nla_put_failure:
 	err = -EMSGSIZE;
 err_resource_put:
-err_skb_send_alloc:
 	nlmsg_free(skb);
 	return err;
 }
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 9d4e56d97080..96afc55aa61e 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -2536,6 +2536,7 @@ int dev_ethtool(struct net *net, struct ifreq *ifr)
 	case ETHTOOL_GPHYSTATS:
 	case ETHTOOL_GTSO:
 	case ETHTOOL_GPERMADDR:
+	case ETHTOOL_GUFO:
 	case ETHTOOL_GGSO:
 	case ETHTOOL_GGRO:
 	case ETHTOOL_GFLAGS:
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 57557a6a950c..3219a2932463 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -187,16 +187,16 @@ static void poll_napi(struct net_device *dev)
 	}
 }
 
-static void netpoll_poll_dev(struct net_device *dev)
+void netpoll_poll_dev(struct net_device *dev)
 {
-	const struct net_device_ops *ops;
 	struct netpoll_info *ni = rcu_dereference_bh(dev->npinfo);
+	const struct net_device_ops *ops;
 
 	/* Don't do any rx activity if the dev_lock mutex is held
 	 * the dev_open/close paths use this to block netpoll activity
 	 * while changing device state
 	 */
-	if (down_trylock(&ni->dev_lock))
+	if (!ni || down_trylock(&ni->dev_lock))
 		return;
 
 	if (!netif_running(dev)) {
@@ -205,13 +205,8 @@ static void netpoll_poll_dev(struct net_device *dev)
 	}
 
 	ops = dev->netdev_ops;
-	if (!ops->ndo_poll_controller) {
-		up(&ni->dev_lock);
-		return;
-	}
-
-	/* Process pending work on NIC */
-	ops->ndo_poll_controller(dev);
+	if (ops->ndo_poll_controller)
+		ops->ndo_poll_controller(dev);
 
 	poll_napi(dev);
 
@@ -219,6 +214,7 @@ static void netpoll_poll_dev(struct net_device *dev)
 
 	zap_completion_queue();
 }
+EXPORT_SYMBOL(netpoll_poll_dev);
 
 void netpoll_poll_disable(struct net_device *dev)
 {
@@ -613,8 +609,7 @@ int __netpoll_setup(struct netpoll *np, struct net_device *ndev)
 	strlcpy(np->dev_name, ndev->name, IFNAMSIZ);
 	INIT_WORK(&np->cleanup_work, netpoll_async_cleanup);
 
-	if ((ndev->priv_flags & IFF_DISABLE_NETPOLL) ||
-	    !ndev->netdev_ops->ndo_poll_controller) {
+	if (ndev->priv_flags & IFF_DISABLE_NETPOLL) {
 		np_err(np, "%s doesn't support polling, aborting\n",
 		       np->dev_name);
 		err = -ENOTSUPP;
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index c4f5602308ed..284a22154b4e 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -627,6 +627,7 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
 		    const struct iphdr *tnl_params, u8 protocol)
 {
 	struct ip_tunnel *tunnel = netdev_priv(dev);
+	unsigned int inner_nhdr_len = 0;
 	const struct iphdr *inner_iph;
 	struct flowi4 fl4;
 	u8     tos, ttl;
@@ -636,6 +637,14 @@ void ip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev,
 	__be32 dst;
 	bool connected;
 
+	/* ensure we can access the inner net header, for several users below */
+	if (skb->protocol == htons(ETH_P_IP))
+		inner_nhdr_len = sizeof(struct iphdr);
+	else if (skb->protocol == htons(ETH_P_IPV6))
+		inner_nhdr_len = sizeof(struct ipv6hdr);
+	if (unlikely(!pskb_may_pull(skb, inner_nhdr_len)))
+		goto tx_error;
+
 	inner_iph = (const struct iphdr *)skb_inner_network_header(skb);
 	connected = (tunnel->parms.iph.daddr != 0);
 
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index bfe3ec7ecb14..a9a317322388 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4202,7 +4202,6 @@ static struct inet6_ifaddr *if6_get_first(struct seq_file *seq, loff_t pos)
 				p++;
 				continue;
 			}
-			state->offset++;
 			return ifa;
 		}
 
@@ -4226,13 +4225,12 @@ static struct inet6_ifaddr *if6_get_next(struct seq_file *seq,
 		return ifa;
 	}
 
+	state->offset = 0;
 	while (++state->bucket < IN6_ADDR_HSIZE) {
-		state->offset = 0;
 		hlist_for_each_entry_rcu(ifa,
 				     &inet6_addr_lst[state->bucket], addr_lst) {
 			if (!net_eq(dev_net(ifa->idev->dev), net))
 				continue;
-			state->offset++;
 			return ifa;
 		}
 	}
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 419960b0ba16..a0b6932c3afd 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1234,7 +1234,7 @@ static inline int
 ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ip6_tnl *t = netdev_priv(dev);
-	const struct iphdr  *iph = ip_hdr(skb);
+	const struct iphdr  *iph;
 	int encap_limit = -1;
 	struct flowi6 fl6;
 	__u8 dsfield;
@@ -1242,6 +1242,11 @@ ip4ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 	u8 tproto;
 	int err;
 
+	/* ensure we can access the full inner ip header */
+	if (!pskb_may_pull(skb, sizeof(struct iphdr)))
+		return -1;
+
+	iph = ip_hdr(skb);
 	memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
 
 	tproto = READ_ONCE(t->parms.proto);
@@ -1306,7 +1311,7 @@ static inline int
 ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ip6_tnl *t = netdev_priv(dev);
-	struct ipv6hdr *ipv6h = ipv6_hdr(skb);
+	struct ipv6hdr *ipv6h;
 	int encap_limit = -1;
 	__u16 offset;
 	struct flowi6 fl6;
@@ -1315,6 +1320,10 @@ ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 	u8 tproto;
 	int err;
 
+	if (unlikely(!pskb_may_pull(skb, sizeof(*ipv6h))))
+		return -1;
+
+	ipv6h = ipv6_hdr(skb);
 	tproto = READ_ONCE(t->parms.proto);
 	if ((tproto != IPPROTO_IPV6 && tproto != 0) ||
 	    ip6_tnl_addr_conflict(t, ipv6h))
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 938db8ae2316..d28f83e01593 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -364,11 +364,14 @@ EXPORT_SYMBOL(ip6_dst_alloc);
 
 static void ip6_dst_destroy(struct dst_entry *dst)
 {
+	struct dst_metrics *p = (struct dst_metrics *)DST_METRICS_PTR(dst);
 	struct rt6_info *rt = (struct rt6_info *)dst;
 	struct fib6_info *from;
 	struct inet6_dev *idev;
 
-	dst_destroy_metrics_generic(dst);
+	if (p != &dst_default_metrics && refcount_dec_and_test(&p->refcnt))
+		kfree(p);
+
 	rt6_uncached_list_del(rt);
 
 	idev = rt->rt6i_idev;
@@ -976,6 +979,10 @@ static void rt6_set_from(struct rt6_info *rt, struct fib6_info *from)
 	rt->rt6i_flags &= ~RTF_EXPIRES;
 	rcu_assign_pointer(rt->from, from);
 	dst_init_metrics(&rt->dst, from->fib6_metrics->metrics, true);
+	if (from->fib6_metrics != &dst_default_metrics) {
+		rt->dst._metrics |= DST_METRICS_REFCOUNTED;
+		refcount_inc(&from->fib6_metrics->refcnt);
+	}
 }
 
 /* Caller must already hold reference to @ort */
diff --git a/net/mpls/af_mpls.c b/net/mpls/af_mpls.c
index 7a4de6d618b1..8fbe6cdbe255 100644
--- a/net/mpls/af_mpls.c
+++ b/net/mpls/af_mpls.c
@@ -1533,10 +1533,14 @@ static int mpls_dev_notify(struct notifier_block *this, unsigned long event,
 	unsigned int flags;
 
 	if (event == NETDEV_REGISTER) {
-		/* For now just support Ethernet, IPGRE, SIT and IPIP devices */
+
+		/* For now just support Ethernet, IPGRE, IP6GRE, SIT and
+		 * IPIP devices
+		 */
 		if (dev->type == ARPHRD_ETHER ||
 		    dev->type == ARPHRD_LOOPBACK ||
 		    dev->type == ARPHRD_IPGRE ||
+		    dev->type == ARPHRD_IP6GRE ||
 		    dev->type == ARPHRD_SIT ||
 		    dev->type == ARPHRD_TUNNEL) {
 			mdev = mpls_add_dev(dev);
diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c
index c070dfc0190a..c92894c3e40a 100644
--- a/net/netlabel/netlabel_unlabeled.c
+++ b/net/netlabel/netlabel_unlabeled.c
@@ -781,7 +781,8 @@ static int netlbl_unlabel_addrinfo_get(struct genl_info *info,
 {
 	u32 addr_len;
 
-	if (info->attrs[NLBL_UNLABEL_A_IPV4ADDR]) {
+	if (info->attrs[NLBL_UNLABEL_A_IPV4ADDR] &&
+	    info->attrs[NLBL_UNLABEL_A_IPV4MASK]) {
 		addr_len = nla_len(info->attrs[NLBL_UNLABEL_A_IPV4ADDR]);
 		if (addr_len != sizeof(struct in_addr) &&
 		    addr_len != nla_len(info->attrs[NLBL_UNLABEL_A_IPV4MASK]))
diff --git a/net/nfc/hci/core.c b/net/nfc/hci/core.c
index ac8030c4bcf8..19cb2e473ea6 100644
--- a/net/nfc/hci/core.c
+++ b/net/nfc/hci/core.c
@@ -209,6 +209,11 @@ void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
 		}
 		create_info = (struct hci_create_pipe_resp *)skb->data;
 
+		if (create_info->pipe >= NFC_HCI_MAX_PIPES) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+
 		/* Save the new created pipe and bind with local gate,
 		 * the description for skb->data[3] is destination gate id
 		 * but since we received this cmd from host controller, we
@@ -232,6 +237,11 @@ void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
 		}
 		delete_info = (struct hci_delete_pipe_noti *)skb->data;
 
+		if (delete_info->pipe >= NFC_HCI_MAX_PIPES) {
+			status = NFC_HCI_ANY_E_NOK;
+			goto exit;
+		}
+
 		hdev->pipes[delete_info->pipe].gate = NFC_HCI_INVALID_GATE;
 		hdev->pipes[delete_info->pipe].dest_host = NFC_HCI_INVALID_HOST;
 		break;
diff --git a/net/rds/ib.h b/net/rds/ib.h
index 73427ff439f9..71ff356ee702 100644
--- a/net/rds/ib.h
+++ b/net/rds/ib.h
@@ -443,7 +443,7 @@ int rds_ib_send_grab_credits(struct rds_ib_connection *ic, u32 wanted,
 int rds_ib_xmit_atomic(struct rds_connection *conn, struct rm_atomic_op *op);
 
 /* ib_stats.c */
-DECLARE_PER_CPU(struct rds_ib_statistics, rds_ib_stats);
+DECLARE_PER_CPU_SHARED_ALIGNED(struct rds_ib_statistics, rds_ib_stats);
 #define rds_ib_stats_inc(member) rds_stats_inc_which(rds_ib_stats, member)
 #define rds_ib_stats_add(member, count) \
 		rds_stats_add_which(rds_ib_stats, member, count)
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 12cac85da994..033696e6f74f 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -260,6 +260,7 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)
 bool sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu)
 {
 	struct dst_entry *dst = sctp_transport_dst_check(t);
+	struct sock *sk = t->asoc->base.sk;
 	bool change = true;
 
 	if (unlikely(pmtu < SCTP_DEFAULT_MINSEGMENT)) {
@@ -271,12 +272,19 @@ bool sctp_transport_update_pmtu(struct sctp_transport *t, u32 pmtu)
 	pmtu = SCTP_TRUNC4(pmtu);
 
 	if (dst) {
-		dst->ops->update_pmtu(dst, t->asoc->base.sk, NULL, pmtu);
+		struct sctp_pf *pf = sctp_get_pf_specific(dst->ops->family);
+		union sctp_addr addr;
+
+		pf->af->from_sk(&addr, sk);
+		pf->to_sk_daddr(&t->ipaddr, sk);
+		dst->ops->update_pmtu(dst, sk, NULL, pmtu);
+		pf->to_sk_daddr(&addr, sk);
+
 		dst = sctp_transport_dst_check(t);
 	}
 
 	if (!dst) {
-		t->af_specific->get_dst(t, &t->saddr, &t->fl, t->asoc->base.sk);
+		t->af_specific->get_dst(t, &t->saddr, &t->fl, sk);
 		dst = t->dst;
 	}
 
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 2d8a1e15e4f9..015231789ed2 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -742,7 +742,10 @@ static void smc_connect_work(struct work_struct *work)
 		smc->sk.sk_err = -rc;
 
 out:
-	smc->sk.sk_state_change(&smc->sk);
+	if (smc->sk.sk_err)
+		smc->sk.sk_state_change(&smc->sk);
+	else
+		smc->sk.sk_write_space(&smc->sk);
 	kfree(smc->connect_info);
 	smc->connect_info = NULL;
 	release_sock(&smc->sk);
@@ -1150,9 +1153,9 @@ static int smc_listen_rdma_reg(struct smc_sock *new_smc, int local_contact)
 }
 
 /* listen worker: finish RDMA setup */
-static void smc_listen_rdma_finish(struct smc_sock *new_smc,
-				   struct smc_clc_msg_accept_confirm *cclc,
-				   int local_contact)
+static int smc_listen_rdma_finish(struct smc_sock *new_smc,
+				  struct smc_clc_msg_accept_confirm *cclc,
+				  int local_contact)
 {
 	struct smc_link *link = &new_smc->conn.lgr->lnk[SMC_SINGLE_LINK];
 	int reason_code = 0;
@@ -1175,11 +1178,12 @@ static void smc_listen_rdma_finish(struct smc_sock *new_smc,
 		if (reason_code)
 			goto decline;
 	}
-	return;
+	return 0;
 
 decline:
 	mutex_unlock(&smc_create_lgr_pending);
 	smc_listen_decline(new_smc, reason_code, local_contact);
+	return reason_code;
 }
 
 /* setup for RDMA connection of server */
@@ -1276,8 +1280,10 @@ static void smc_listen_work(struct work_struct *work)
 	}
 
 	/* finish worker */
-	if (!ism_supported)
-		smc_listen_rdma_finish(new_smc, &cclc, local_contact);
+	if (!ism_supported) {
+		if (smc_listen_rdma_finish(new_smc, &cclc, local_contact))
+			return;
+	}
 	smc_conn_save_peer_info(new_smc, &cclc);
 	mutex_unlock(&smc_create_lgr_pending);
 	smc_listen_out_connected(new_smc);
@@ -1529,7 +1535,7 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
 		return EPOLLNVAL;
 
 	smc = smc_sk(sock->sk);
-	if ((sk->sk_state == SMC_INIT) || smc->use_fallback) {
+	if (smc->use_fallback) {
 		/* delegate to CLC child sock */
 		mask = smc->clcsock->ops->poll(file, smc->clcsock, wait);
 		sk->sk_err = smc->clcsock->sk->sk_err;
@@ -1560,9 +1566,9 @@ static __poll_t smc_poll(struct file *file, struct socket *sock,
 				mask |= EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;
 			if (sk->sk_state == SMC_APPCLOSEWAIT1)
 				mask |= EPOLLIN;
+			if (smc->conn.urg_state == SMC_URG_VALID)
+				mask |= EPOLLPRI;
 		}
-		if (smc->conn.urg_state == SMC_URG_VALID)
-			mask |= EPOLLPRI;
 	}
 
 	return mask;
diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c
index 83aba9ade060..52241d679cc9 100644
--- a/net/smc/smc_clc.c
+++ b/net/smc/smc_clc.c
@@ -446,14 +446,12 @@ int smc_clc_send_proposal(struct smc_sock *smc, int smc_type,
 	vec[i++].iov_len = sizeof(trl);
 	/* due to the few bytes needed for clc-handshake this cannot block */
 	len = kernel_sendmsg(smc->clcsock, &msg, vec, i, plen);
-	if (len < sizeof(pclc)) {
-		if (len >= 0) {
-			reason_code = -ENETUNREACH;
-			smc->sk.sk_err = -reason_code;
-		} else {
-			smc->sk.sk_err = smc->clcsock->sk->sk_err;
-			reason_code = -smc->sk.sk_err;
-		}
+	if (len < 0) {
+		smc->sk.sk_err = smc->clcsock->sk->sk_err;
+		reason_code = -smc->sk.sk_err;
+	} else if (len < (int)sizeof(pclc)) {
+		reason_code = -ENETUNREACH;
+		smc->sk.sk_err = -reason_code;
 	}
 
 	return reason_code;
diff --git a/net/smc/smc_close.c b/net/smc/smc_close.c
index ac961dfb1ea1..ea2b87f29469 100644
--- a/net/smc/smc_close.c
+++ b/net/smc/smc_close.c
@@ -100,15 +100,14 @@ static void smc_close_active_abort(struct smc_sock *smc)
 	struct smc_cdc_conn_state_flags *txflags =
 		&smc->conn.local_tx_ctrl.conn_state_flags;
 
-	sk->sk_err = ECONNABORTED;
-	if (smc->clcsock && smc->clcsock->sk) {
-		smc->clcsock->sk->sk_err = ECONNABORTED;
-		smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
+	if (sk->sk_state != SMC_INIT && smc->clcsock && smc->clcsock->sk) {
+		sk->sk_err = ECONNABORTED;
+		if (smc->clcsock && smc->clcsock->sk) {
+			smc->clcsock->sk->sk_err = ECONNABORTED;
+			smc->clcsock->sk->sk_state_change(smc->clcsock->sk);
+		}
 	}
 	switch (sk->sk_state) {
-	case SMC_INIT:
-		sk->sk_state = SMC_PEERABORTWAIT;
-		break;
 	case SMC_ACTIVE:
 		sk->sk_state = SMC_PEERABORTWAIT;
 		release_sock(sk);
@@ -143,6 +142,7 @@ static void smc_close_active_abort(struct smc_sock *smc)
 	case SMC_PEERFINCLOSEWAIT:
 		sock_put(sk); /* passive closing */
 		break;
+	case SMC_INIT:
 	case SMC_PEERABORTWAIT:
 	case SMC_CLOSED:
 		break;
diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 01c6ce042a1c..7cb3e4f07c10 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -461,7 +461,7 @@ static const struct genl_ops smc_pnet_ops[] = {
 };
 
 /* SMC_PNETID family definition */
-static struct genl_family smc_pnet_nl_family = {
+static struct genl_family smc_pnet_nl_family __ro_after_init = {
 	.hdrsize = 0,
 	.name = SMCR_GENL_FAMILY_NAME,
 	.version = SMCR_GENL_FAMILY_VERSION,