Merge tag 'net-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.

Current release - regressions:

- sched: sch_taprio: do not schedule in taprio_reset()

Previous releases - regressions:

- core: fix UaF in netns ops registration error path

- ipv4: prevent potential spectre v1 gadgets

- ipv6: fix reachability confirmation with proxy_ndp

- netfilter: fix for the set rbtree

- eth: fec: use page_pool_put_full_page when freeing rx buffers

- eth: iavf: fix temporary deadlock and failure to set MAC address

Previous releases - always broken:

- netlink: prevent potential spectre v1 gadgets

- netfilter: fixes for SCTP connection tracking

- mctp: struct sock lifetime fixes

- eth: ravb: fix possible hang if RIS2_QFF1 happen

- eth: tg3: resolve deadlock in tg3_reset_task() during EEH

Misc:

- Mat stepped out as MPTCP co-maintainer"

* tag 'net-6.2-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits)
net: mdio-mux-meson-g12a: force internal PHY off on mux switch
docs: networking: Fix bridge documentation URL
tsnep: Fix TX queue stop/wake for multiple queues
net/tg3: resolve deadlock in tg3_reset_task() during EEH
net: mctp: mark socks as dead on unhash, prevent re-add
net: mctp: hold key reference when looking up a general key
net: mctp: move expiry timer delete to unhash
net: mctp: add an explicit reference from a mctp_sk_key to sock
net: ravb: Fix possible hang if RIS2_QFF1 happen
net: ravb: Fix lack of register setting after system resumed for Gen3
net/x25: Fix to not accept on connected socket
ice: move devlink port creation/deletion
sctp: fail if no bound addresses can be used for a given scope
net/sched: sch_taprio: do not schedule in taprio_reset()
Revert "Merge branch 'ethtool-mac-merge'"
netrom: Fix use-after-free of a listening socket.
netfilter: conntrack: unify established states for SCTP paths
Revert "netfilter: conntrack: add sctp DATA_SENT state"
netfilter: conntrack: fix bug in for_each_sctp_chunk
netfilter: conntrack: fix vtag checks for ABORT/SHUTDOWN_COMPLETE
...

CREDITS

···
 D: XF86_8514
 D: cfdisk (curses based disk partitioning program)
 
+N: Mat Martineau
+E: [e-mail]
+D: MPTCP subsystem co-maintainer 2020-2023
+D: Keyctl restricted keyring and Diffie-Hellman UAPI
+D: Bluetooth L2CAP ERTM mode and AMP
+S: USA
+
 N: John S. Marvin
 E: [e-mail]
 D: PA-RISC port

Documentation/networking/bridge.rst

···
 userspace tools.
 
 Documentation for Linux bridging is on:
-   http://www.linuxfoundation.org/collaborate/workgroups/networking/bridge
+   https://wiki.linuxfoundation.org/networking/bridge
 
 The bridge-utilities are maintained at:
    git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/bridge-utils.git

Documentation/networking/nf_conntrack-sysctl.rst

···
 	default 3
 
 nf_conntrack_sctp_timeout_established - INTEGER (seconds)
-	default 432000 (5 days)
+	default 210
+
+	Default is set to (hb_interval * path_max_retrans + rto_max)
 
 nf_conntrack_sctp_timeout_shutdown_sent - INTEGER (seconds)
 	default 0.3
···
 
 	This timeout is used to setup conntrack entry on secondary paths.
 	Default is set to hb_interval.
-
-nf_conntrack_sctp_timeout_heartbeat_acked - INTEGER (seconds)
-	default 210
-
-	This timeout is used to setup conntrack entry on secondary paths.
-	Default is set to (hb_interval * path_max_retrans + rto_max)
 
 nf_conntrack_udp_timeout - INTEGER (seconds)
 	default 30

MAINTAINERS

···
 F:	net/netlabel/
 
 NETWORKING [MPTCP]
-M:	Mat Martineau <[e-mail]>
 M:	Matthieu Baerts <[e-mail]>
 L:	[e-mail]
 L:	[e-mail]

drivers/net/dsa/microchip/ksz9477_i2c.c

···
 	},
 	{
 		.compatible = "microchip,ksz8563",
-		.data = &ksz_switch_chips[KSZ9893]
+		.data = &ksz_switch_chips[KSZ8563]
 	},
 	{
 		.compatible = "microchip,ksz9567",

drivers/net/ethernet/adi/adin1110.c

···
 
 	if ((port_priv->flags & IFF_ALLMULTI && rxb->pkt_type == PACKET_MULTICAST) ||
 	    (port_priv->flags & IFF_BROADCAST && rxb->pkt_type == PACKET_BROADCAST))
-		rxb->offload_fwd_mark = 1;
+		rxb->offload_fwd_mark = port_priv->priv->forwarding;
 
 	netif_rx(rxb);
 

drivers/net/ethernet/broadcom/tg3.c

···
 	rtnl_lock();
 	tg3_full_lock(tp, 0);
 
-	if (!netif_running(tp->dev)) {
+	if (tp->pcierr_recovery || !netif_running(tp->dev)) {
 		tg3_flag_clear(tp, RESET_TASK_PENDING);
 		tg3_full_unlock(tp);
 		rtnl_unlock();
···
 
 	netdev_info(netdev, "PCI I/O error detected\n");
 
+	/* Want to make sure that the reset task doesn't run */
+	tg3_reset_task_cancel(tp);
+
 	rtnl_lock();
 
 	/* Could be second call or maybe we don't have netdev yet */
···
 	tg3_netif_stop(tp);
 
 	tg3_timer_stop(tp);
-
-	/* Want to make sure that the reset task doesn't run */
-	tg3_reset_task_cancel(tp);
 
 	netif_device_detach(netdev);
 

drivers/net/ethernet/engleder/tsnep_main.c

···
 		/* ring full, shall not happen because queue is stopped if full
 		 * below
 		 */
-		netif_stop_queue(tx->adapter->netdev);
+		netif_stop_subqueue(tx->adapter->netdev, tx->queue_index);
 
 		spin_unlock_irqrestore(&tx->lock, flags);
 
···
 
 	if (tsnep_tx_desc_available(tx) < (MAX_SKB_FRAGS + 1)) {
 		/* ring can get full with next frame */
-		netif_stop_queue(tx->adapter->netdev);
+		netif_stop_subqueue(tx->adapter->netdev, tx->queue_index);
 	}
 
 	spin_unlock_irqrestore(&tx->lock, flags);
···
 
 static bool tsnep_tx_poll(struct tsnep_tx *tx, int napi_budget)
 {
+	struct tsnep_tx_entry *entry;
+	struct netdev_queue *nq;
 	unsigned long flags;
 	int budget = 128;
-	struct tsnep_tx_entry *entry;
-	int count;
 	int length;
+	int count;
+
+	nq = netdev_get_tx_queue(tx->adapter->netdev, tx->queue_index);
 
 	spin_lock_irqsave(&tx->lock, flags);
 
···
 	} while (likely(budget));
 
 	if ((tsnep_tx_desc_available(tx) >= ((MAX_SKB_FRAGS + 1) * 2)) &&
-	    netif_queue_stopped(tx->adapter->netdev)) {
-		netif_wake_queue(tx->adapter->netdev);
+	    netif_tx_queue_stopped(nq)) {
+		netif_tx_wake_queue(nq);
 	}
 
 	spin_unlock_irqrestore(&tx->lock, flags);

drivers/net/ethernet/freescale/fec_main.c

···
 	for (q = 0; q < fep->num_rx_queues; q++) {
 		rxq = fep->rx_queue[q];
 		for (i = 0; i < rxq->bd.ring_size; i++)
-			page_pool_release_page(rxq->page_pool, rxq->rx_skb_info[i].page);
+			page_pool_put_full_page(rxq->page_pool, rxq->rx_skb_info[i].page, false);
 
 		for (i = 0; i < XDP_STATS_TOTAL; i++)
 			rxq->stats[i] = 0;

drivers/net/ethernet/intel/iavf/iavf.h

···
 
 /* board specific private data structure */
 struct iavf_adapter {
+	struct workqueue_struct *wq;
 	struct work_struct reset_task;
 	struct work_struct adminq_task;
 	struct delayed_work client_task;
···
 
 /* needed by iavf_ethtool.c */
 extern char iavf_driver_name[];
-extern struct workqueue_struct *iavf_wq;
 
 static inline const char *iavf_state_str(enum iavf_state_t state)
 {

drivers/net/ethernet/intel/iavf/iavf_ethtool.c

···
 	if (changed_flags & IAVF_FLAG_LEGACY_RX) {
 		if (netif_running(netdev)) {
 			adapter->flags |= IAVF_FLAG_RESET_NEEDED;
-			queue_work(iavf_wq, &adapter->reset_task);
+			queue_work(adapter->wq, &adapter->reset_task);
 		}
 	}
 
···
 
 	if (netif_running(netdev)) {
 		adapter->flags |= IAVF_FLAG_RESET_NEEDED;
-		queue_work(iavf_wq, &adapter->reset_task);
+		queue_work(adapter->wq, &adapter->reset_task);
 	}
 
 	return 0;
···
 	adapter->aq_required |= IAVF_FLAG_AQ_ADD_FDIR_FILTER;
 	spin_unlock_bh(&adapter->fdir_fltr_lock);
 
-	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+	mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 
 ret:
 	if (err && fltr)
···
 	spin_unlock_bh(&adapter->fdir_fltr_lock);
 
 	if (fltr && fltr->state == IAVF_FDIR_FLTR_DEL_REQUEST)
-		mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+		mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 
 	return err;
 }
···
 	spin_unlock_bh(&adapter->adv_rss_lock);
 
 	if (!err)
-		mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+		mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 
 	mutex_unlock(&adapter->crit_lock);
 

drivers/net/ethernet/intel/iavf/iavf_main.c

···
 MODULE_LICENSE("GPL v2");
 
 static const struct net_device_ops iavf_netdev_ops;
-struct workqueue_struct *iavf_wq;
 
 int iavf_status_to_errno(enum iavf_status status)
 {
···
 	if (!(adapter->flags &
 	      (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED))) {
 		adapter->flags |= IAVF_FLAG_RESET_NEEDED;
-		queue_work(iavf_wq, &adapter->reset_task);
+		queue_work(adapter->wq, &adapter->reset_task);
 	}
 }
 
···
 void iavf_schedule_request_stats(struct iavf_adapter *adapter)
 {
 	adapter->aq_required |= IAVF_FLAG_AQ_REQUEST_STATS;
-	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+	mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 }
 
 /**
···
 
 	if (adapter->state != __IAVF_REMOVE)
 		/* schedule work on the private workqueue */
-		queue_work(iavf_wq, &adapter->adminq_task);
+		queue_work(adapter->wq, &adapter->adminq_task);
 
 	return IRQ_HANDLED;
 }
···
 
 	/* schedule the watchdog task to immediately process the request */
 	if (f) {
-		queue_work(iavf_wq, &adapter->watchdog_task.work);
+		mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 		return 0;
 	}
 	return -ENOMEM;
···
 	adapter->aq_required |= IAVF_FLAG_AQ_ENABLE_QUEUES;
 	if (CLIENT_ENABLED(adapter))
 		adapter->flags |= IAVF_FLAG_CLIENT_NEEDS_OPEN;
-	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+	mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 }
 
 /**
···
 		adapter->aq_required |= IAVF_FLAG_AQ_DISABLE_QUEUES;
 	}
 
-	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+	mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 }
 
 /**
···
 
 	if (aq_required) {
 		adapter->aq_required |= aq_required;
-		mod_delayed_work(iavf_wq, &adapter->watchdog_task, 0);
+		mod_delayed_work(adapter->wq, &adapter->watchdog_task, 0);
 	}
 }
 
···
 		goto restart_watchdog;
 	}
 
+	if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES) &&
+	    adapter->netdev_registered &&
+	    !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section) &&
+	    rtnl_trylock()) {
+		netdev_update_features(adapter->netdev);
+		rtnl_unlock();
+		adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES;
+	}
+
 	if (adapter->flags & IAVF_FLAG_PF_COMMS_FAILED)
 		iavf_change_state(adapter, __IAVF_COMM_FAILED);
 
···
 		adapter->aq_required = 0;
 		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
 		mutex_unlock(&adapter->crit_lock);
-		queue_work(iavf_wq, &adapter->reset_task);
+		queue_work(adapter->wq, &adapter->reset_task);
 		return;
 	}
 
···
 	case __IAVF_STARTUP:
 		iavf_startup(adapter);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 				   msecs_to_jiffies(30));
 		return;
 	case __IAVF_INIT_VERSION_CHECK:
 		iavf_init_version_check(adapter);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 				   msecs_to_jiffies(30));
 		return;
 	case __IAVF_INIT_GET_RESOURCES:
 		iavf_init_get_resources(adapter);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 				   msecs_to_jiffies(1));
 		return;
 	case __IAVF_INIT_EXTENDED_CAPS:
 		iavf_init_process_extended_caps(adapter);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 				   msecs_to_jiffies(1));
 		return;
 	case __IAVF_INIT_CONFIG_ADAPTER:
 		iavf_init_config_adapter(adapter);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 				   msecs_to_jiffies(1));
 		return;
 	case __IAVF_INIT_FAILED:
···
 			adapter->flags |= IAVF_FLAG_PF_COMMS_FAILED;
 			iavf_shutdown_adminq(hw);
 			mutex_unlock(&adapter->crit_lock);
-			queue_delayed_work(iavf_wq,
+			queue_delayed_work(adapter->wq,
 					   &adapter->watchdog_task, (5 * HZ));
 			return;
 		}
 		/* Try again from failed step*/
 		iavf_change_state(adapter, adapter->last_state);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ);
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task, HZ);
 		return;
 	case __IAVF_COMM_FAILED:
 		if (test_bit(__IAVF_IN_REMOVE_TASK,
···
 		adapter->aq_required = 0;
 		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq,
+		queue_delayed_work(adapter->wq,
 				   &adapter->watchdog_task,
 				   msecs_to_jiffies(10));
 		return;
 	case __IAVF_RESETTING:
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
+				   HZ * 2);
 		return;
 	case __IAVF_DOWN:
 	case __IAVF_DOWN_PENDING:
···
 		adapter->aq_required = 0;
 		adapter->current_op = VIRTCHNL_OP_UNKNOWN;
 		dev_err(&adapter->pdev->dev, "Hardware reset detected\n");
-		queue_work(iavf_wq, &adapter->reset_task);
+		queue_work(adapter->wq, &adapter->reset_task);
 		mutex_unlock(&adapter->crit_lock);
-		queue_delayed_work(iavf_wq,
+		queue_delayed_work(adapter->wq,
 				   &adapter->watchdog_task, HZ * 2);
 		return;
 	}
···
 	mutex_unlock(&adapter->crit_lock);
 restart_watchdog:
 	if (adapter->state >= __IAVF_DOWN)
-		queue_work(iavf_wq, &adapter->adminq_task);
+		queue_work(adapter->wq, &adapter->adminq_task);
 	if (adapter->aq_required)
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 				   msecs_to_jiffies(20));
 	else
-		queue_delayed_work(iavf_wq, &adapter->watchdog_task, HZ * 2);
+		queue_delayed_work(adapter->wq, &adapter->watchdog_task,
+				   HZ * 2);
 }
 
 /**
···
 	 */
 	if (!mutex_trylock(&adapter->crit_lock)) {
 		if (adapter->state != __IAVF_REMOVE)
-			queue_work(iavf_wq, &adapter->reset_task);
+			queue_work(adapter->wq, &adapter->reset_task);
 
 		goto reset_finish;
 	}
···
 	bitmap_clear(adapter->vsi.active_cvlans, 0, VLAN_N_VID);
 	bitmap_clear(adapter->vsi.active_svlans, 0, VLAN_N_VID);
 
-	mod_delayed_work(iavf_wq, &adapter->watchdog_task, 2);
+	mod_delayed_work(adapter->wq, &adapter->watchdog_task, 2);
 
 	/* We were running when the reset started, so we need to restore some
 	 * state here.
···
 		if (adapter->state == __IAVF_REMOVE)
 			return;
 
-		queue_work(iavf_wq, &adapter->adminq_task);
+		queue_work(adapter->wq, &adapter->adminq_task);
 		goto out;
 	}
 
···
 	} while (pending);
 	mutex_unlock(&adapter->crit_lock);
 
-	if ((adapter->flags & IAVF_FLAG_SETUP_NETDEV_FEATURES)) {
-		if (adapter->netdev_registered ||
-		    !test_bit(__IAVF_IN_REMOVE_TASK, &adapter->crit_section)) {
-			struct net_device *netdev = adapter->netdev;
-
-			rtnl_lock();
-			netdev_update_features(netdev);
-			rtnl_unlock();
-			/* Request VLAN offload settings */
-			if (VLAN_V2_ALLOWED(adapter))
-				iavf_set_vlan_offload_features
-					(adapter, 0, netdev->features);
-
-			iavf_set_queue_vlan_tag_loc(adapter);
-		}
-
-		adapter->flags &= ~IAVF_FLAG_SETUP_NETDEV_FEATURES;
-	}
 	if ((adapter->flags &
 	     (IAVF_FLAG_RESET_PENDING | IAVF_FLAG_RESET_NEEDED)) ||
 	    adapter->state == __IAVF_RESETTING)
···
 
 	if (netif_running(netdev)) {
 		adapter->flags |= IAVF_FLAG_RESET_NEEDED;
-		queue_work(iavf_wq, &adapter->reset_task);
+		queue_work(adapter->wq, &adapter->reset_task);
 	}
 
 	return 0;
···
 	hw = &adapter->hw;
 	hw->back = adapter;
 
+	adapter->wq = alloc_ordered_workqueue("%s", WQ_MEM_RECLAIM,
+					      iavf_driver_name);
+	if (!adapter->wq) {
+		err = -ENOMEM;
+		goto err_alloc_wq;
+	}
+
 	adapter->msg_enable = BIT(DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
 	iavf_change_state(adapter, __IAVF_STARTUP);
 
···
 	INIT_WORK(&adapter->adminq_task, iavf_adminq_task);
 	INIT_DELAYED_WORK(&adapter->watchdog_task, iavf_watchdog_task);
 	INIT_DELAYED_WORK(&adapter->client_task, iavf_client_task);
-	queue_delayed_work(iavf_wq, &adapter->watchdog_task,
+	queue_delayed_work(adapter->wq, &adapter->watchdog_task,
 			   msecs_to_jiffies(5 * (pdev->devfn & 0x07)));
 
 	/* Setup the wait queue for indicating transition to down status */
···
 	return 0;
 
 err_ioremap:
+	destroy_workqueue(adapter->wq);
+err_alloc_wq:
 	free_netdev(netdev);
 err_alloc_etherdev:
 	pci_disable_pcie_error_reporting(pdev);
···
 		return err;
 	}
 
-	queue_work(iavf_wq, &adapter->reset_task);
+	queue_work(adapter->wq, &adapter->reset_task);
 
 	netif_device_attach(adapter->netdev);
 
···
 	}
 	spin_unlock_bh(&adapter->adv_rss_lock);
 
+	destroy_workqueue(adapter->wq);
+
 	free_netdev(netdev);
 
 	pci_disable_pcie_error_reporting(pdev);
···
  **/
 static int __init iavf_init_module(void)
 {
-	int ret;
-
 	pr_info("iavf: %s\n", iavf_driver_string);
 
 	pr_info("%s\n", iavf_copyright);
 
-	iavf_wq = alloc_workqueue("%s", WQ_UNBOUND | WQ_MEM_RECLAIM, 1,
-				  iavf_driver_name);
-	if (!iavf_wq) {
-		pr_err("%s: Failed to create workqueue\n", iavf_driver_name);
-		return -ENOMEM;
-	}
-
-	ret = pci_register_driver(&iavf_driver);
-	if (ret)
-		destroy_workqueue(iavf_wq);
-
-	return ret;
+	return pci_register_driver(&iavf_driver);
 }
 
 module_init(iavf_init_module);
···
 static void __exit iavf_exit_module(void)
 {
 	pci_unregister_driver(&iavf_driver);
-	destroy_workqueue(iavf_wq);
 }
 
 module_exit(iavf_exit_module);

drivers/net/ethernet/intel/iavf/iavf_virtchnl.c

···
 			if (!(adapter->flags & IAVF_FLAG_RESET_PENDING)) {
 				adapter->flags |= IAVF_FLAG_RESET_PENDING;
 				dev_info(&adapter->pdev->dev, "Scheduling reset task\n");
-				queue_work(iavf_wq, &adapter->reset_task);
+				queue_work(adapter->wq, &adapter->reset_task);
 			}
 			break;
 		default:
···
 
 		iavf_process_config(adapter);
 		adapter->flags |= IAVF_FLAG_SETUP_NETDEV_FEATURES;
+
+		/* Request VLAN offload settings */
+		if (VLAN_V2_ALLOWED(adapter))
+			iavf_set_vlan_offload_features(adapter, 0,
+						       netdev->features);
+
+		iavf_set_queue_vlan_tag_loc(adapter);
+
 		was_mac_changed = !ether_addr_equal(netdev->dev_addr,
 						    adapter->hw.mac.addr);
 

drivers/net/ethernet/intel/ice/ice_lib.c

···
 		}
 	}
 
-	if (vsi->type == ICE_VSI_PF)
-		ice_devlink_destroy_pf_port(pf);
-
 	if (vsi->type == ICE_VSI_VF &&
 	    vsi->agg_node && vsi->agg_node->valid)
 		vsi->agg_node->num_vsis--;

drivers/net/ethernet/intel/ice/ice_main.c

···
 }
 
 /**
- * ice_register_netdev - register netdev and devlink port
+ * ice_register_netdev - register netdev
  * @pf: pointer to the PF struct
  */
 static int ice_register_netdev(struct ice_pf *pf)
···
 	if (!vsi || !vsi->netdev)
 		return -EIO;
 
-	err = ice_devlink_create_pf_port(pf);
-	if (err)
-		goto err_devlink_create;
-
-	SET_NETDEV_DEVLINK_PORT(vsi->netdev, &pf->devlink_port);
 	err = register_netdev(vsi->netdev);
 	if (err)
 		goto err_register_netdev;
···
 
 	return 0;
 err_register_netdev:
-	ice_devlink_destroy_pf_port(pf);
-err_devlink_create:
 	free_netdev(vsi->netdev);
 	vsi->netdev = NULL;
 	clear_bit(ICE_VSI_NETDEV_ALLOCD, vsi->state);
···
 ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent)
 {
 	struct device *dev = &pdev->dev;
+	struct ice_vsi *vsi;
 	struct ice_pf *pf;
 	struct ice_hw *hw;
 	int i, err;
···
 	pcie_print_link_status(pf->pdev);
 
 probe_done:
+	err = ice_devlink_create_pf_port(pf);
+	if (err)
+		goto err_create_pf_port;
+
+	vsi = ice_get_main_vsi(pf);
+	if (!vsi || !vsi->netdev) {
+		err = -EINVAL;
+		goto err_netdev_reg;
+	}
+
+	SET_NETDEV_DEVLINK_PORT(vsi->netdev, &pf->devlink_port);
+
 	err = ice_register_netdev(pf);
 	if (err)
 		goto err_netdev_reg;
···
 err_devlink_reg_param:
 	ice_devlink_unregister_params(pf);
 err_netdev_reg:
+	ice_devlink_destroy_pf_port(pf);
+err_create_pf_port:
 err_send_version_unroll:
 	ice_vsi_release_all(pf);
 err_alloc_sw_unroll:
···
 	ice_setup_mc_magic_wake(pf);
 	ice_vsi_release_all(pf);
 	mutex_destroy(&(&pf->hw)->fdir_fltr_lock);
+	ice_devlink_destroy_pf_port(pf);
 	ice_set_wake(pf);
 	ice_free_irq_msix_misc(pf);
 	ice_for_each_vsi(pf, i) {

drivers/net/ethernet/microsoft/mana/gdma_main.c

···
 		gic->handler = NULL;
 		gic->arg = NULL;
 
+		if (!i)
+			snprintf(gic->name, MANA_IRQ_NAME_SZ, "mana_hwc@pci:%s",
+				 pci_name(pdev));
+		else
+			snprintf(gic->name, MANA_IRQ_NAME_SZ, "mana_q%d@pci:%s",
+				 i - 1, pci_name(pdev));
+
 		irq = pci_irq_vector(pdev, i);
 		if (irq < 0) {
 			err = irq;
 			goto free_mask;
 		}
 
-		err = request_irq(irq, mana_gd_intr, 0, "mana_intr", gic);
+		err = request_irq(irq, mana_gd_intr, 0, gic->name, gic);
 		if (err)
 			goto free_mask;
 		irq_set_affinity_and_hint(irq, req_mask);

drivers/net/ethernet/renesas/ravb_main.c

···
 	ravb_write(ndev, ~(EIS_QFS | EIS_RESERVED), EIS);
 	if (eis & EIS_QFS) {
 		ris2 = ravb_read(ndev, RIS2);
-		ravb_write(ndev, ~(RIS2_QFF0 | RIS2_RFFF | RIS2_RESERVED),
+		ravb_write(ndev, ~(RIS2_QFF0 | RIS2_QFF1 | RIS2_RFFF | RIS2_RESERVED),
 			   RIS2);
 
 		/* Receive Descriptor Empty int */
 		if (ris2 & RIS2_QFF0)
 			priv->stats[RAVB_BE].rx_over_errors++;
 
-		    /* Receive Descriptor Empty int */
+		/* Receive Descriptor Empty int */
 		if (ris2 & RIS2_QFF1)
 			priv->stats[RAVB_NC].rx_over_errors++;
 
···
 	else
 		ret = ravb_close(ndev);
 
+	if (priv->info->ccc_gac)
+		ravb_ptp_stop(ndev);
+
 	return ret;
 }
 
···
 
 	/* Restore descriptor base address table */
 	ravb_write(ndev, priv->desc_bat_dma, DBAT);
+
+	if (priv->info->ccc_gac)
+		ravb_ptp_init(ndev, priv->pdev);
 
 	if (netif_running(ndev)) {
 		if (priv->wol_enabled) {

drivers/net/ethernet/renesas/rswitch.c

···
 			port = NULL;
 			goto out;
 		}
-		if (index == rdev->etha->index)
+		if (index == rdev->etha->index) {
+			if (!of_device_is_available(port))
+				port = NULL;
 			break;
+		}
 	}
 
 out:
···
 
 	port = rswitch_get_port_node(rdev);
 	if (!port)
-		return -ENODEV;
+		return 0;	/* ignored */
 
 	err = of_get_phy_mode(port, &rdev->etha->phy_interface);
 	of_node_put(port);
···
 {
 	int i, err;
 
-	for (i = 0; i < RSWITCH_NUM_PORTS; i++) {
+	rswitch_for_each_enabled_port(priv, i) {
 		err = rswitch_ether_port_init_one(priv->rdev[i]);
 		if (err)
 			goto err_init_one;
 	}
 
-	for (i = 0; i < RSWITCH_NUM_PORTS; i++) {
+	rswitch_for_each_enabled_port(priv, i) {
 		err = rswitch_serdes_init(priv->rdev[i]);
 		if (err)
 			goto err_serdes;
···
 	return 0;
 
 err_serdes:
-	for (i--; i >= 0; i--)
+	rswitch_for_each_enabled_port_continue_reverse(priv, i)
 		rswitch_serdes_deinit(priv->rdev[i]);
 	i = RSWITCH_NUM_PORTS;
 
 err_init_one:
-	for (i--; i >= 0; i--)
+	rswitch_for_each_enabled_port_continue_reverse(priv, i)
 		rswitch_ether_port_deinit_one(priv->rdev[i]);
 
 	return err;
···
 	netif_napi_add(ndev, &rdev->napi, rswitch_poll);
 
 	port = rswitch_get_port_node(rdev);
+	rdev->disabled = !port;
 	err = of_get_ethdev_address(port, ndev);
 	of_node_put(port);
 	if (err) {
···
 	if (err)
 		goto err_ether_port_init_all;
 
-	for (i = 0; i < RSWITCH_NUM_PORTS; i++) {
+	rswitch_for_each_enabled_port(priv, i) {
 		err = register_netdev(priv->rdev[i]->ndev);
 		if (err) {
-			for (i--; i >= 0; i--)
+			rswitch_for_each_enabled_port_continue_reverse(priv, i)
 				unregister_netdev(priv->rdev[i]->ndev);
 			goto err_register_netdev;
 		}
 	}
 
-	for (i = 0; i < RSWITCH_NUM_PORTS; i++)
+	rswitch_for_each_enabled_port(priv, i)
 		netdev_info(priv->rdev[i]->ndev, "MAC address %pM\n",
 			    priv->rdev[i]->ndev->dev_addr);
 

drivers/net/ethernet/renesas/rswitch.h

···
 #define RSWITCH_MAX_NUM_QUEUES	128
 
 #define RSWITCH_NUM_PORTS	3
+#define rswitch_for_each_enabled_port(priv, i)		\
+	for (i = 0; i < RSWITCH_NUM_PORTS; i++)		\
+		if (priv->rdev[i]->disabled)		\
+			continue;			\
+		else
+
+#define rswitch_for_each_enabled_port_continue_reverse(priv, i)	\
+	for (i--; i >= 0; i--)					\
+		if (priv->rdev[i]->disabled)			\
+			continue;				\
+		else
 
 #define TX_RING_SIZE		1024
 #define RX_RING_SIZE		1024
···
 	struct rswitch_gwca_queue *tx_queue;
 	struct rswitch_gwca_queue *rx_queue;
 	u8 ts_tag;
+	bool disabled;
 
 	int port;
 	struct rswitch_etha *etha;

drivers/net/mdio/mdio-mux-meson-g12a.c

···
  */
 
 #include <linux/bitfield.h>
+#include <linux/delay.h>
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/device.h>
···
 
 static int g12a_enable_internal_mdio(struct g12a_mdio_mux *priv)
 {
+	u32 value;
 	int ret;
 
 	/* Enable the phy clock */
···
 
 	/* Initialize ephy control */
 	writel(EPHY_G12A_ID, priv->regs + ETH_PHY_CNTL0);
-	writel(FIELD_PREP(PHY_CNTL1_ST_MODE, 3) |
-	       FIELD_PREP(PHY_CNTL1_ST_PHYADD, EPHY_DFLT_ADD) |
-	       FIELD_PREP(PHY_CNTL1_MII_MODE, EPHY_MODE_RMII) |
-	       PHY_CNTL1_CLK_EN |
-	       PHY_CNTL1_CLKFREQ |
-	       PHY_CNTL1_PHY_ENB,
-	       priv->regs + ETH_PHY_CNTL1);
+
+	/* Make sure we get a 0 -> 1 transition on the enable bit */
+	value = FIELD_PREP(PHY_CNTL1_ST_MODE, 3) |
+		FIELD_PREP(PHY_CNTL1_ST_PHYADD, EPHY_DFLT_ADD) |
+		FIELD_PREP(PHY_CNTL1_MII_MODE, EPHY_MODE_RMII) |
+		PHY_CNTL1_CLK_EN |
+		PHY_CNTL1_CLKFREQ;
+	writel(value, priv->regs + ETH_PHY_CNTL1);
 	writel(PHY_CNTL2_USE_INTERNAL |
 	       PHY_CNTL2_SMI_SRC_MAC |
 	       PHY_CNTL2_RX_CLK_EPHY,
 	       priv->regs + ETH_PHY_CNTL2);
+
+	value |= PHY_CNTL1_PHY_ENB;
+	writel(value, priv->regs + ETH_PHY_CNTL1);
+
+	/* The phy needs a bit of time to power up */
+	mdelay(10);
 
 	return 0;
 }

include/net/mana/gdma.h

···
 	};
 };
 
+#define MANA_IRQ_NAME_SZ 32
+
 struct gdma_irq_context {
 	void (*handler)(void *arg);
 	void *arg;
+	char name[MANA_IRQ_NAME_SZ];
 };
 
 struct gdma_context {

include/uapi/linux/netfilter/nf_conntrack_sctp.h

···
 	SCTP_CONNTRACK_SHUTDOWN_RECD,
 	SCTP_CONNTRACK_SHUTDOWN_ACK_SENT,
 	SCTP_CONNTRACK_HEARTBEAT_SENT,
-	SCTP_CONNTRACK_HEARTBEAT_ACKED,
-	SCTP_CONNTRACK_DATA_SENT,
+	SCTP_CONNTRACK_HEARTBEAT_ACKED,	/* no longer used */
 	SCTP_CONNTRACK_MAX
 };
 

include/uapi/linux/netfilter/nfnetlink_cttimeout.h

···
 	CTA_TIMEOUT_SCTP_SHUTDOWN_RECD,
 	CTA_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
 	CTA_TIMEOUT_SCTP_HEARTBEAT_SENT,
-	CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED,
-	CTA_TIMEOUT_SCTP_DATA_SENT,
+	CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED, /* no longer used */
 	__CTA_TIMEOUT_SCTP_MAX
 };
 #define CTA_TIMEOUT_SCTP_MAX (__CTA_TIMEOUT_SCTP_MAX - 1)

lib/nlattr.c

···
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/jiffies.h>
+#include <linux/nospec.h>
 #include <linux/skbuff.h>
 #include <linux/string.h>
 #include <linux/types.h>
···
 	if (type <= 0 || type > maxtype)
 		return 0;
 
+	type = array_index_nospec(type, maxtype + 1);
 	pt = &policy[type];
 
 	BUG_ON(pt->type > NLA_TYPE_MAX);
···
 			}
 			continue;
 		}
+		type = array_index_nospec(type, maxtype + 1);
 		if (policy) {
 			int err = validate_nla(nla, maxtype, policy,
 					       validate, extack, depth);

net/core/net_namespace.c

···
 		return 0;
 
 	if (ops->id && ops->size) {
-cleanup:
 		ng = rcu_dereference_protected(net->gen,
 					       lockdep_is_held(&pernet_ops_rwsem));
 		ng->ptr[*ops->id] = NULL;
 	}
 
+cleanup:
 	kfree(data);
 
 out:

net/ipv4/fib_semantics.c

···
 #include <linux/slab.h>
 #include <linux/netlink.h>
 #include <linux/hash.h>
+#include <linux/nospec.h>
 
 #include <net/arp.h>
 #include <net/inet_dscp.h>
···
 		if (type > RTAX_MAX)
 			return false;
 
+		type = array_index_nospec(type, RTAX_MAX + 1);
 		if (type == RTAX_CC_ALGO) {
 			char tmp[TCP_CA_NAME_MAX];
 			bool ecn_ca = false;

net/ipv4/metrics.c

···
 // SPDX-License-Identifier: GPL-2.0-only
 #include <linux/netlink.h>
+#include <linux/nospec.h>
 #include <linux/rtnetlink.h>
 #include <linux/types.h>
 #include <net/ip.h>
···
 			return -EINVAL;
 		}
 
+		type = array_index_nospec(type, RTAX_MAX + 1);
 		if (type == RTAX_CC_ALGO) {
 			char tmp[TCP_CA_NAME_MAX];
 

net/ipv6/ip6_output.c

···
 	    pneigh_lookup(&nd_tbl, net, &hdr->daddr, skb->dev, 0)) {
 		int proxied = ip6_forward_proxy_check(skb);
 		if (proxied > 0) {
-			hdr->hop_limit--;
+			/* It's tempting to decrease the hop limit
+			 * here by 1, as we do at the end of the
+			 * function too.
+			 *
+			 * But that would be incorrect, as proxying is
+			 * not forwarding.  The ip6_input function
+			 * will handle this packet locally, and it
+			 * depends on the hop limit being unchanged.
+			 *
+			 * One example is the NDP hop limit, that
+			 * always has to stay 255, but other would be
+			 * similar checks around RA packets, where the
+			 * user can even change the desired limit.
+			 */
 			return ip6_input(skb);
 		} else if (proxied < 0) {
 			__IP6_INC_STATS(net, idev, IPSTATS_MIB_INDISCARDS);

net/mctp/af_mctp.c

···
 
 static void mctp_sk_close(struct sock *sk, long timeout)
 {
-	struct mctp_sock *msk = container_of(sk, struct mctp_sock, sk);
-
-	del_timer_sync(&msk->key_expiry);
 	sk_common_release(sk);
 }
 
···
 		spin_lock_irqsave(&key->lock, fl2);
 		__mctp_key_remove(key, net, fl2, MCTP_TRACE_KEY_CLOSED);
 	}
+	sock_set_flag(sk, SOCK_DEAD);
 	spin_unlock_irqrestore(&net->mctp.keys_lock, flags);
+
+	/* Since there are no more tag allocations (we have removed all of the
+	 * keys), stop any pending expiry events. the timer cannot be re-queued
+	 * as the sk is no longer observable
+	 */
+	del_timer_sync(&msk->key_expiry);
 }
 
 static struct proto mctp_proto = {

net/mctp/route.c

···
 	key->valid = true;
 	spin_lock_init(&key->lock);
 	refcount_set(&key->refs, 1);
+	sock_hold(key->sk);
 
 	return key;
 }
···
 	mctp_dev_release_key(key->dev, key);
 	spin_unlock_irqrestore(&key->lock, flags);
 
+	sock_put(key->sk);
 	kfree(key);
 }
 
···
 	int rc = 0;
 
 	spin_lock_irqsave(&net->mctp.keys_lock, flags);
+
+	if (sock_flag(&msk->sk, SOCK_DEAD)) {
+		rc = -EINVAL;
+		goto out_unlock;
+	}
 
 	hlist_for_each_entry(tmp, &net->mctp.keys, hlist) {
 		if (mctp_key_match(tmp, key->local_addr, key->peer_addr,
···
 		hlist_add_head(&key->sklist, &msk->keys);
 	}
 
+out_unlock:
 	spin_unlock_irqrestore(&net->mctp.keys_lock, flags);
 
 	return rc;
···
 
 static int mctp_route_input(struct mctp_route *route, struct sk_buff *skb)
 {
+	struct mctp_sk_key *key, *any_key = NULL;
 	struct net *net = dev_net(skb->dev);
-	struct mctp_sk_key *key;
 	struct mctp_sock *msk;
 	struct mctp_hdr *mh;
 	unsigned long f;
···
 			 * key for reassembly - we'll create a more specific
 			 * one for future packets if required (ie, !EOM).
 			 */
-			key = mctp_lookup_key(net, skb, MCTP_ADDR_ANY, &f);
-			if (key) {
-				msk = container_of(key->sk,
+			any_key = mctp_lookup_key(net, skb, MCTP_ADDR_ANY, &f);
+			if (any_key) {
+				msk = container_of(any_key->sk,
 						   struct mctp_sock, sk);
-				spin_unlock_irqrestore(&key->lock, f);
-				mctp_key_unref(key);
-				key = NULL;
+				spin_unlock_irqrestore(&any_key->lock, f);
 			}
 		}
 
···
 			 * this function.
 			 */
 			rc = mctp_key_add(key, msk);
-			if (rc) {
-				kfree(key);
-			} else {
+			if (!rc)
 				trace_mctp_key_acquire(key);
 
-				/* we don't need to release key->lock on exit */
-				mctp_key_unref(key);
-			}
+			/* we don't need to release key->lock on exit, so
+			 * clean up here and suppress the unlock via
+			 * setting to NULL
+			 */
+			mctp_key_unref(key);
 			key = NULL;
 
 		} else {
···
 		spin_unlock_irqrestore(&key->lock, f);
 		mctp_key_unref(key);
 	}
+	if (any_key)
+		mctp_key_unref(any_key);
 out:
 	if (rc)
 		kfree_skb(skb);

net/netfilter/nf_conntrack_proto_sctp.c

···
 #include <net/netfilter/nf_conntrack_ecache.h>
 #include <net/netfilter/nf_conntrack_timeout.h>
 
-/* FIXME: Examine ipfilter's timeouts and conntrack transitions more
-   closely.  They're more complex. --RR
-
-   And so for me for SCTP :D -Kiran */
-
 static const char *const sctp_conntrack_names[] = {
-	"NONE",
-	"CLOSED",
-	"COOKIE_WAIT",
-	"COOKIE_ECHOED",
-	"ESTABLISHED",
-	"SHUTDOWN_SENT",
-	"SHUTDOWN_RECD",
-	"SHUTDOWN_ACK_SENT",
-	"HEARTBEAT_SENT",
-	"HEARTBEAT_ACKED",
+	[SCTP_CONNTRACK_NONE]			= "NONE",
+	[SCTP_CONNTRACK_CLOSED]			= "CLOSED",
+	[SCTP_CONNTRACK_COOKIE_WAIT]		= "COOKIE_WAIT",
+	[SCTP_CONNTRACK_COOKIE_ECHOED]		= "COOKIE_ECHOED",
+	[SCTP_CONNTRACK_ESTABLISHED]		= "ESTABLISHED",
+	[SCTP_CONNTRACK_SHUTDOWN_SENT]		= "SHUTDOWN_SENT",
+	[SCTP_CONNTRACK_SHUTDOWN_RECD]		= "SHUTDOWN_RECD",
+	[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT]	= "SHUTDOWN_ACK_SENT",
+	[SCTP_CONNTRACK_HEARTBEAT_SENT]		= "HEARTBEAT_SENT",
 };
 
 #define SECS  * HZ
···
 	[SCTP_CONNTRACK_CLOSED]			= 10 SECS,
 	[SCTP_CONNTRACK_COOKIE_WAIT]		= 3 SECS,
 	[SCTP_CONNTRACK_COOKIE_ECHOED]		= 3 SECS,
-	[SCTP_CONNTRACK_ESTABLISHED]		= 5 DAYS,
+	[SCTP_CONNTRACK_ESTABLISHED]		= 210 SECS,
 	[SCTP_CONNTRACK_SHUTDOWN_SENT]		= 300 SECS / 1000,
 	[SCTP_CONNTRACK_SHUTDOWN_RECD]		= 300 SECS / 1000,
 	[SCTP_CONNTRACK_SHUTDOWN_ACK_SENT]	= 3 SECS,
 	[SCTP_CONNTRACK_HEARTBEAT_SENT]		= 30 SECS,
-	[SCTP_CONNTRACK_HEARTBEAT_ACKED]	= 210 SECS,
-	[SCTP_CONNTRACK_DATA_SENT]		= 30 SECS,
 };
 
 #define	SCTP_FLAG_HEARTBEAT_VTAG_FAILED	1
···
 #define	sSR SCTP_CONNTRACK_SHUTDOWN_RECD
 #define	sSA SCTP_CONNTRACK_SHUTDOWN_ACK_SENT
 #define	sHS SCTP_CONNTRACK_HEARTBEAT_SENT
-#define	sHA SCTP_CONNTRACK_HEARTBEAT_ACKED
-#define	sDS SCTP_CONNTRACK_DATA_SENT
 #define	sIV SCTP_CONNTRACK_MAX
 
 /*
···
 CLOSED            - We have seen a SHUTDOWN_COMPLETE chunk in the direction of
 		    the SHUTDOWN chunk. Connection is closed.
 HEARTBEAT_SENT    - We have seen a HEARTBEAT in a new flow.
-HEARTBEAT_ACKED   - We have seen a HEARTBEAT-ACK/DATA/SACK in the direction
-		    opposite to that of the HEARTBEAT/DATA chunk. Secondary connection
-		    is established.
-DATA_SENT         - We have seen a DATA/SACK in a new flow.
 */
 
 /* TODO
···
 */
 
 /* SCTP conntrack state transitions */
-static const u8 sctp_conntracks[2][12][SCTP_CONNTRACK_MAX] = {
+static const u8 sctp_conntracks[2][11][SCTP_CONNTRACK_MAX] = {
 	{
 /*	ORIGINAL	*/
-/*                  sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS */
-/* init         */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCW, sHA, sCW},
-/* init_ack     */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},
-/* abort        */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
-/* shutdown     */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA, sCL, sSS, sCL},
-/* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA, sSA, sHA, sSA},
-/* error        */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},/* Can't have Stale cookie*/
-/* cookie_echo  */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},/* 5.2.4 - Big TODO */
-/* cookie_ack   */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL, sHA, sCL},/* Can't come in orig dir */
-/* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL, sCL, sHA, sCL},
-/* heartbeat    */ {sHS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS},
-/* heartbeat_ack*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS},
-/* data/sack    */ {sDS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS}
+/*                  sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS */
+/* init         */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCW},
+/* init_ack     */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL},
+/* abort        */ {sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sCL},
+/* shutdown     */ {sCL, sCL, sCW, sCE, sSS, sSS, sSR, sSA, sCL},
+/* shutdown_ack */ {sSA, sCL, sCW, sCE, sES, sSA, sSA, sSA, sSA},
+/* error        */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL},/* Can't have Stale cookie*/
+/* cookie_echo  */ {sCL, sCL, sCE, sCE, sES, sSS, sSR, sSA, sCL},/* 5.2.4 - Big TODO */
+/* cookie_ack   */ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sCL},/* Can't come in orig dir */
+/* shutdown_comp*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sCL, sCL},
+/* heartbeat    */ {sHS, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS},
+/* heartbeat_ack*/ {sCL, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS},
 	},
 	{
 /*	REPLY	*/
-/*                  sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sDS */
-/* init         */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA, sIV},/* INIT in sCL Big TODO */
-/* init_ack     */ {sIV, sCW, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA, sIV},
-/* abort        */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sIV, sCL, sIV},
-/* shutdown     */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA, sIV, sSR, sIV},
-/* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA, sIV, sHA, sIV},
-/* error        */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA, sIV, sHA, sIV},
-/* cookie_echo  */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV, sHA, sIV},/* Can't come in reply dir */
-/* cookie_ack   */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA, sIV, sHA, sIV},
-/* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL, sIV, sHA, sIV},
-/* heartbeat    */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS, sHA, sHA},
-/* heartbeat_ack*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHA, sHA, sHA},
-/* data/sack    */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHA, sHA, sHA},
+/*                  sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS */
+/* init         */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV},/* INIT in sCL Big TODO */
+/* init_ack     */ {sIV, sCW, sCW, sCE, sES, sSS, sSR, sSA, sIV},
+/* abort        */ {sIV, sCL, sCL, sCL, sCL, sCL, sCL, sCL, sIV},
+/* shutdown     */ {sIV, sCL, sCW, sCE, sSR, sSS, sSR, sSA, sIV},
+/* shutdown_ack */ {sIV, sCL, sCW, sCE, sES, sSA, sSA, sSA, sIV},
+/* error        */ {sIV, sCL, sCW, sCL, sES, sSS, sSR, sSA, sIV},
+/* cookie_echo  */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sIV},/* Can't come in reply dir */
+/* cookie_ack   */ {sIV, sCL, sCW, sES, sES, sSS, sSR, sSA, sIV},
+/* shutdown_comp*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sCL, sIV},
+/* heartbeat    */ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sHS},
+/* heartbeat_ack*/ {sIV, sCL, sCW, sCE, sES, sSS, sSR, sSA, sES},
 	}
 };
 
···
 
 #define for_each_sctp_chunk(skb, sch, _sch, offset, dataoff, count)	\
 for ((offset) = (dataoff) + sizeof(struct sctphdr), (count) = 0;	\
-	(offset) < (skb)->len &&					\
-	((sch) = skb_header_pointer((skb), (offset), sizeof(_sch), &(_sch)));	\
+	((sch) = skb_header_pointer((skb), (offset), sizeof(_sch), &(_sch))) &&	\
+	(sch)->length;	\
 	(offset) += (ntohs((sch)->length) + 3) & ~3, (count)++)
 
 /* Some validity checks to make sure the chunks are fine */
···
 		pr_debug("SCTP_CID_HEARTBEAT_ACK");
 		i = 10;
 		break;
-	case SCTP_CID_DATA:
-	case SCTP_CID_SACK:
-		pr_debug("SCTP_CID_DATA/SACK");
-		i = 11;
-		break;
 	default:
 		/* Other chunks like DATA or SACK do not change the state */
 		pr_debug("Unknown chunk type, Will stay in %s\n",
···
 				 ih->init_tag);
 
 			ct->proto.sctp.vtag[IP_CT_DIR_REPLY] = ih->init_tag;
-		} else if (sch->type == SCTP_CID_HEARTBEAT ||
-			   sch->type == SCTP_CID_DATA ||
-			   sch->type == SCTP_CID_SACK) {
+		} else if (sch->type == SCTP_CID_HEARTBEAT) {
 			pr_debug("Setting vtag %x for secondary conntrack\n",
 				 sh->vtag);
 			ct->proto.sctp.vtag[IP_CT_DIR_ORIGINAL] = sh->vtag;
···
 
 		if (!sctp_new(ct, skb, sh, dataoff))
 			return -NF_ACCEPT;
-	} else {
-		/* Check the verification tag (Sec 8.5) */
-		if (!test_bit(SCTP_CID_INIT, map) &&
-		    !test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) &&
-		    !test_bit(SCTP_CID_COOKIE_ECHO, map) &&
-		    !test_bit(SCTP_CID_ABORT, map) &&
-		    !test_bit(SCTP_CID_SHUTDOWN_ACK, map) &&
-		    !test_bit(SCTP_CID_HEARTBEAT, map) &&
-		    !test_bit(SCTP_CID_HEARTBEAT_ACK, map) &&
-		    sh->vtag != ct->proto.sctp.vtag[dir]) {
-			pr_debug("Verification tag check failed\n");
-			goto out;
-		}
+	}
+
+	/* Check the verification tag (Sec 8.5) */
+	if (!test_bit(SCTP_CID_INIT, map) &&
+	    !test_bit(SCTP_CID_SHUTDOWN_COMPLETE, map) &&
+	    !test_bit(SCTP_CID_COOKIE_ECHO, map) &&
+	    !test_bit(SCTP_CID_ABORT, map) &&
+	    !test_bit(SCTP_CID_SHUTDOWN_ACK, map) &&
+	    !test_bit(SCTP_CID_HEARTBEAT, map) &&
+	    !test_bit(SCTP_CID_HEARTBEAT_ACK, map) &&
+	    sh->vtag != ct->proto.sctp.vtag[dir]) {
+		pr_debug("Verification tag check failed\n");
+		goto out;
 	}
 
 	old_state = new_state = SCTP_CONNTRACK_NONE;
···
 	for_each_sctp_chunk (skb, sch, _sch, offset, dataoff, count) {
 		/* Special cases of Verification tag check (Sec 8.5.1) */
 		if (sch->type == SCTP_CID_INIT) {
-			/* Sec 8.5.1 (A) */
+			/* (A) vtag MUST be zero */
 			if (sh->vtag != 0)
 				goto out_unlock;
 		} else if (sch->type == SCTP_CID_ABORT) {
-			/* Sec 8.5.1 (B) */
-			if (sh->vtag != ct->proto.sctp.vtag[dir] &&
-			    sh->vtag != ct->proto.sctp.vtag[!dir])
+			/* (B) vtag MUST match own vtag if T flag is unset OR
+			 * MUST match peer's vtag if T flag is set
+			 */
+			if ((!(sch->flags & SCTP_CHUNK_FLAG_T) &&
+			     sh->vtag != ct->proto.sctp.vtag[dir]) ||
+			    ((sch->flags & SCTP_CHUNK_FLAG_T) &&
+			     sh->vtag != ct->proto.sctp.vtag[!dir]))
 				goto out_unlock;
 		} else if (sch->type == SCTP_CID_SHUTDOWN_COMPLETE) {
-			/* Sec 8.5.1 (C) */
-			if (sh->vtag != ct->proto.sctp.vtag[dir] &&
-			    sh->vtag != ct->proto.sctp.vtag[!dir] &&
-			    sch->flags & SCTP_CHUNK_FLAG_T)
+			/* (C) vtag MUST match own vtag if T flag is unset OR
+			 * MUST match peer's vtag if T flag is set
+			 */
+			if ((!(sch->flags & SCTP_CHUNK_FLAG_T) &&
+			     sh->vtag != ct->proto.sctp.vtag[dir]) ||
+			    ((sch->flags & SCTP_CHUNK_FLAG_T) &&
+			     sh->vtag != ct->proto.sctp.vtag[!dir]))
 				goto out_unlock;
 		} else if (sch->type == SCTP_CID_COOKIE_ECHO) {
-			/* Sec 8.5.1 (D) */
+			/* (D) vtag must be same as init_vtag as found in INIT_ACK */
 			if (sh->vtag != ct->proto.sctp.vtag[dir])
 				goto out_unlock;
 		} else if (sch->type == SCTP_CID_HEARTBEAT) {
···
 				ct->proto.sctp.vtag[!dir] = 0;
 			} else if (ct->proto.sctp.flags & SCTP_FLAG_HEARTBEAT_VTAG_FAILED) {
 				ct->proto.sctp.flags &= ~SCTP_FLAG_HEARTBEAT_VTAG_FAILED;
-			}
-		} else if (sch->type == SCTP_CID_DATA || sch->type == SCTP_CID_SACK) {
-			if (ct->proto.sctp.vtag[dir] == 0) {
-				pr_debug("Setting vtag %x for dir %d\n", sh->vtag, dir);
-				ct->proto.sctp.vtag[dir] = sh->vtag;
 			}
 		}
 
···
 		}
 
 		ct->proto.sctp.state = new_state;
-		if (old_state != new_state)
+		if (old_state != new_state) {
 			nf_conntrack_event_cache(IPCT_PROTOINFO, ct);
+			if (new_state == SCTP_CONNTRACK_ESTABLISHED &&
+			    !test_and_set_bit(IPS_ASSURED_BIT, &ct->status))
+				nf_conntrack_event_cache(IPCT_ASSURED, ct);
+		}
 	}
 	spin_unlock_bh(&ct->lock);
 
···
 		timeouts = nf_sctp_pernet(nf_ct_net(ct))->timeouts;
 
 	nf_ct_refresh_acct(ct, ctinfo, skb, timeouts[new_state]);
-
-	if (old_state == SCTP_CONNTRACK_COOKIE_ECHOED &&
-	    dir == IP_CT_DIR_REPLY &&
-	    new_state == SCTP_CONNTRACK_ESTABLISHED) {
-		pr_debug("Setting assured bit\n");
-		set_bit(IPS_ASSURED_BIT, &ct->status);
-		nf_conntrack_event_cache(IPCT_ASSURED, ct);
-	}
 
 	return NF_ACCEPT;
 
···
 	[CTA_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT]	= { .type = NLA_U32 },
 	[CTA_TIMEOUT_SCTP_HEARTBEAT_SENT]	= { .type = NLA_U32 },
 	[CTA_TIMEOUT_SCTP_HEARTBEAT_ACKED]	= { .type = NLA_U32 },
-	[CTA_TIMEOUT_SCTP_DATA_SENT]		= { .type = NLA_U32 },
 };
 #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
 

net/netfilter/nf_conntrack_standalone.c

···
 	NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD,
 	NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
 	NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT,
-	NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED,
-	NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_DATA_SENT,
 #endif
 #ifdef CONFIG_NF_CT_PROTO_DCCP
 	NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST,
···
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
 	},
-	[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED] = {
-		.procname       = "nf_conntrack_sctp_timeout_heartbeat_acked",
-		.maxlen         = sizeof(unsigned int),
-		.mode           = 0644,
-		.proc_handler   = proc_dointvec_jiffies,
-	},
-	[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_DATA_SENT] = {
-		.procname       = "nf_conntrack_sctp_timeout_data_sent",
-		.maxlen         = sizeof(unsigned int),
-		.mode           = 0644,
-		.proc_handler   = proc_dointvec_jiffies,
-	},
 #endif
 #ifdef CONFIG_NF_CT_PROTO_DCCP
 	[NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST] = {
···
 	XASSIGN(SHUTDOWN_RECD, sn);
 	XASSIGN(SHUTDOWN_ACK_SENT, sn);
 	XASSIGN(HEARTBEAT_SENT, sn);
-	XASSIGN(HEARTBEAT_ACKED, sn);
-	XASSIGN(DATA_SENT, sn);
 #undef XASSIGN
 #endif
 }

net/netfilter/nft_set_rbtree.c

···
 	return !nft_rbtree_interval_end(rbe);
 }
 
-static bool nft_rbtree_equal(const struct nft_set *set, const void *this,
-			     const struct nft_rbtree_elem *interval)
+static int nft_rbtree_cmp(const struct nft_set *set,
+			  const struct nft_rbtree_elem *e1,
+			  const struct nft_rbtree_elem *e2)
 {
-	return memcmp(this, nft_set_ext_key(&interval->ext), set->klen) == 0;
+	return memcmp(nft_set_ext_key(&e1->ext), nft_set_ext_key(&e2->ext),
+		      set->klen);
 }
 
 static bool __nft_rbtree_lookup(const struct net *net, const struct nft_set *set,
···
 	const struct nft_rbtree_elem *rbe, *interval = NULL;
 	u8 genmask = nft_genmask_cur(net);
 	const struct rb_node *parent;
-	const void *this;
 	int d;
 
 	parent = rcu_dereference_raw(priv->root.rb_node);
···
 
 		rbe = rb_entry(parent, struct nft_rbtree_elem, node);
 
-		this = nft_set_ext_key(&rbe->ext);
-		d = memcmp(this, key, set->klen);
+		d = memcmp(nft_set_ext_key(&rbe->ext), key, set->klen);
 		if (d < 0) {
 			parent = rcu_dereference_raw(parent->rb_left);
 			if (interval &&
-			    nft_rbtree_equal(set, this, interval) &&
+			    !nft_rbtree_cmp(set, rbe, interval) &&
 			    nft_rbtree_interval_end(rbe) &&
 			    nft_rbtree_interval_start(interval))
 				continue;
···
 	return rbe;
 }
 
+static int nft_rbtree_gc_elem(const struct nft_set *__set,
+			      struct nft_rbtree *priv,
+			      struct nft_rbtree_elem *rbe)
+{
+	struct nft_set *set = (struct nft_set *)__set;
+	struct rb_node *prev = rb_prev(&rbe->node);
+	struct nft_rbtree_elem *rbe_prev;
+	struct nft_set_gc_batch *gcb;
+
+	gcb = nft_set_gc_batch_check(set, NULL, GFP_ATOMIC);
+	if (!gcb)
+		return -ENOMEM;
+
+	/* search for expired end interval coming before this element. */
+	do {
+		rbe_prev = rb_entry(prev, struct nft_rbtree_elem, node);
+		if (nft_rbtree_interval_end(rbe_prev))
+			break;
+
+		prev = rb_prev(prev);
+	} while (prev != NULL);
+
+	rb_erase(&rbe_prev->node, &priv->root);
+	rb_erase(&rbe->node, &priv->root);
+	atomic_sub(2, &set->nelems);
+
+	nft_set_gc_batch_add(gcb, rbe);
+	nft_set_gc_batch_complete(gcb);
+
+	return 0;
+}
+
+static bool nft_rbtree_update_first(const struct nft_set *set,
+				    struct nft_rbtree_elem *rbe,
+				    struct rb_node *first)
+{
+	struct nft_rbtree_elem *first_elem;
+
+	first_elem = rb_entry(first, struct nft_rbtree_elem, node);
+	/* this element is closest to where the new element is to be inserted:
+	 * update the first element for the node list path.
+	 */
+	if (nft_rbtree_cmp(set, rbe, first_elem) < 0)
+		return true;
+
+	return false;
+}
+
 static int __nft_rbtree_insert(const struct net *net, const struct nft_set *set,
 			       struct nft_rbtree_elem *new,
 			       struct nft_set_ext **ext)
 {
-	bool overlap = false, dup_end_left = false, dup_end_right = false;
+	struct nft_rbtree_elem *rbe, *rbe_le = NULL, *rbe_ge = NULL;
+	struct rb_node *node, *parent, **p, *first = NULL;
 	struct nft_rbtree *priv = nft_set_priv(set);
 	u8 genmask = nft_genmask_next(net);
-	struct nft_rbtree_elem *rbe;
-	struct rb_node *parent, **p;
-	int d;
+	int d, err;
 
-	/* Detect overlaps as we descend the tree. Set the flag in these cases:
-	 *
-	 * a1. _ _ __>|  ?_ _ __|  (insert end before existing end)
-	 * a2. _ _ ___|  ?_ _ _>|  (insert end after existing end)
-	 * a3. _ _ ___? >|_ _ __|  (insert start before existing end)
-	 *
-	 * and clear it later on, as we eventually reach the points indicated by
-	 * '?' above, in the cases described below. We'll always meet these
-	 * later, locally, due to tree ordering, and overlaps for the intervals
-	 * that are the closest together are always evaluated last.
-	 *
-	 * b1. _ _ __>|  !_ _ __|  (insert end before existing start)
-	 * b2. _ _ ___|  !_ _ _>|  (insert end after existing start)
-	 * b3. _ _ ___! >|_ _ __|  (insert start after existing end, as a leaf)
-	 *            '--' no nodes falling in this range
-	 * b4.          >|_ _   !  (insert start before existing start)
-	 *
-	 * Case a3. resolves to b3.:
-	 * - if the inserted start element is the leftmost, because the '0'
-	 *   element in the tree serves as end element
-	 * - otherwise, if an existing end is found immediately to the left. If
-	 *   there are existing nodes in between, we need to further descend the
-	 *   tree before we can conclude the new start isn't causing an overlap
-	 *
-	 * or to b4., which, preceded by a3., means we already traversed one or
-	 * more existing intervals entirely, from the right.
-	 *
-	 * For a new, rightmost pair of elements, we'll hit cases b3. and b2.,
-	 * in that order.
-	 *
-	 * The flag is also cleared in two special cases:
-	 *
-	 * b5. |__ _ _!|<_ _ _   (insert start right before existing end)
-	 * b6. |__ _ >|!__ _ _   (insert end right after existing start)
-	 *
-	 * which always happen as last step and imply that no further
-	 * overlapping is possible.
-	 *
-	 * Another special case comes from the fact that start elements matching
-	 * an already existing start element are allowed: insertion is not
-	 * performed but we return -EEXIST in that case, and the error will be
-	 * cleared by the caller if NLM_F_EXCL is not present in the request.
-	 * This way, request for insertion of an exact overlap isn't reported as
-	 * error to userspace if not desired.
-	 *
-	 * However, if the existing start matches a pre-existing start, but the
-	 * end element doesn't match the corresponding pre-existing end element,
-	 * we need to report a partial overlap. This is a local condition that
-	 * can be noticed without need for a tracking flag, by checking for a
-	 * local duplicated end for a corresponding start, from left and right,
-	 * separately.
+	/* Descend the tree to search for an existing element greater than the
+	 * key value to insert that is greater than the new element. This is the
+	 * first element to walk the ordered elements to find possible overlap.
 	 */
-
 	parent = NULL;
 	p = &priv->root.rb_node;
 	while (*p != NULL) {
 		parent = *p;
 		rbe = rb_entry(parent, struct nft_rbtree_elem, node);
-		d = memcmp(nft_set_ext_key(&rbe->ext),
-			   nft_set_ext_key(&new->ext),
-			   set->klen);
+		d = nft_rbtree_cmp(set, rbe, new);
+
 		if (d < 0) {
 			p = &parent->rb_left;
-
-			if (nft_rbtree_interval_start(new)) {
-				if (nft_rbtree_interval_end(rbe) &&
-				    nft_set_elem_active(&rbe->ext, genmask) &&
-				    !nft_set_elem_expired(&rbe->ext) && !*p)
-					overlap = false;
-			} else {
-				if (dup_end_left && !*p)
-					return -ENOTEMPTY;
-
-				overlap = nft_rbtree_interval_end(rbe) &&
-					  nft_set_elem_active(&rbe->ext,
-							      genmask) &&
-					  !nft_set_elem_expired(&rbe->ext);
-
-				if (overlap) {
-					dup_end_right = true;
-					continue;
-				}
-			}
 		} else if (d > 0) {
+			if (!first ||
+			    nft_rbtree_update_first(set, rbe, first))
+				first = &rbe->node;
+
 			p = &parent->rb_right;
-
-			if (nft_rbtree_interval_end(new)) {
-				if (dup_end_right && !*p)
-					return -ENOTEMPTY;
-
-				overlap = nft_rbtree_interval_end(rbe) &&
-					  nft_set_elem_active(&rbe->ext,
-							      genmask) &&
-					  !nft_set_elem_expired(&rbe->ext);
-
-				if (overlap) {
-					dup_end_left = true;
-					continue;
-				}
-			} else if (nft_set_elem_active(&rbe->ext, genmask) &&
-				   !nft_set_elem_expired(&rbe->ext)) {
-				overlap = nft_rbtree_interval_end(rbe);
-			}
 		} else {
-			if (nft_rbtree_interval_end(rbe) &&
-			    nft_rbtree_interval_start(new)) {
+			if (nft_rbtree_interval_end(rbe))
 				p = &parent->rb_left;
-
-				if (nft_set_elem_active(&rbe->ext, genmask) &&
-				    !nft_set_elem_expired(&rbe->ext))
-					overlap = false;
-			} else if (nft_rbtree_interval_start(rbe) &&
-				   nft_rbtree_interval_end(new)) {
+			else
 				p = &parent->rb_right;
-
-				if (nft_set_elem_active(&rbe->ext, genmask) &&
-				    !nft_set_elem_expired(&rbe->ext))
-					overlap = false;
-			} else if (nft_set_elem_active(&rbe->ext, genmask) &&
-				   !nft_set_elem_expired(&rbe->ext)) {
-				*ext = &rbe->ext;
-				return -EEXIST;
-			} else {
-				overlap = false;
-				if (nft_rbtree_interval_end(rbe))
-					p = &parent->rb_left;
-				else
-					p = &parent->rb_right;
-			}
 		}
-
-		dup_end_left = dup_end_right = false;
 	}
 
-	if (overlap)
+	if (!first)
+		first = rb_first(&priv->root);
+
+	/* Detect overlap by going through the list of valid tree nodes.
+	 * Values stored in the tree are in reversed order, starting from
+	 * highest to lowest value.
+	 */
+	for (node = first; node != NULL; node = rb_next(node)) {
+		rbe = rb_entry(node, struct nft_rbtree_elem, node);
+
+		if (!nft_set_elem_active(&rbe->ext, genmask))
+			continue;
+
+		/* perform garbage collection to avoid bogus overlap reports. */
+		if (nft_set_elem_expired(&rbe->ext)) {
+			err = nft_rbtree_gc_elem(set, priv, rbe);
+			if (err < 0)
+				return err;
+
+			continue;
+		}
+
+		d = nft_rbtree_cmp(set, rbe, new);
+		if (d == 0) {
+			/* Matching end element: no need to look for an
+			 * overlapping greater or equal element.
+			 */
+			if (nft_rbtree_interval_end(rbe)) {
+				rbe_le = rbe;
+				break;
+			}
+
+			/* first element that is greater or equal to key value. */
+			if (!rbe_ge) {
+				rbe_ge = rbe;
+				continue;
+			}
+
+			/* this is a closer more or equal element, update it. */
+			if (nft_rbtree_cmp(set, rbe_ge, new) != 0) {
+				rbe_ge = rbe;
+				continue;
+			}
+
+			/* element is equal to key value, make sure flags are
+			 * the same, an existing more or equal start element
+			 * must not be replaced by more or equal end element.
+			 */
+			if ((nft_rbtree_interval_start(new) &&
+			     nft_rbtree_interval_start(rbe_ge)) ||
+			    (nft_rbtree_interval_end(new) &&
+			     nft_rbtree_interval_end(rbe_ge))) {
+				rbe_ge = rbe;
+				continue;
+			}
+		} else if (d > 0) {
+			/* annotate element greater than the new element. */
+			rbe_ge = rbe;
+			continue;
+		} else if (d < 0) {
+			/* annotate element less than the new element. */
+			rbe_le = rbe;
+			break;
+		}
+	}
+
+	/* - new start element matching existing start element: full overlap
+	 *   reported as -EEXIST, cleared by caller if NLM_F_EXCL is not given.
+	 */
+	if (rbe_ge && !nft_rbtree_cmp(set, new, rbe_ge) &&
+	    nft_rbtree_interval_start(rbe_ge) == nft_rbtree_interval_start(new)) {
+		*ext = &rbe_ge->ext;
+		return -EEXIST;
+	}
+
+	/* - new end element matching existing end element: full overlap
+	 *   reported as -EEXIST, cleared by caller if NLM_F_EXCL is not given.
+	 */
+	if (rbe_le && !nft_rbtree_cmp(set, new, rbe_le) &&
+	    nft_rbtree_interval_end(rbe_le) == nft_rbtree_interval_end(new)) {
+		*ext = &rbe_le->ext;
+		return -EEXIST;
+	}
+
+	/* - new start element with existing closest, less or equal key value
+	 *   being a start element: partial overlap, reported as -ENOTEMPTY.
+	 *   Anonymous sets allow for two consecutive start element since they
+	 *   are constant, skip them to avoid bogus overlap reports.
+	 */
+	if (!nft_set_is_anonymous(set) && rbe_le &&
+	    nft_rbtree_interval_start(rbe_le) && nft_rbtree_interval_start(new))
 		return -ENOTEMPTY;
+
+	/* - new end element with existing closest, less or equal key value
+	 *   being a end element: partial overlap, reported as -ENOTEMPTY.
+	 */
+	if (rbe_le &&
+	    nft_rbtree_interval_end(rbe_le) && nft_rbtree_interval_end(new))
+		return -ENOTEMPTY;
+
+	/* - new end element with existing closest, greater or equal key value
+	 *   being an end element: partial overlap, reported as -ENOTEMPTY
+	 */
+	if (rbe_ge &&
+	    nft_rbtree_interval_end(rbe_ge) && nft_rbtree_interval_end(new))
+		return -ENOTEMPTY;
+
+	/* Accepted element: pick insertion point depending on key value */
+	parent = NULL;
+	p = &priv->root.rb_node;
+	while (*p != NULL) {
+		parent = *p;
+		rbe = rb_entry(parent, struct nft_rbtree_elem, node);
+		d = nft_rbtree_cmp(set, rbe, new);
+
+		if (d < 0)
+			p = &parent->rb_left;
+		else if (d > 0)
+			p = &parent->rb_right;
+		else if (nft_rbtree_interval_end(rbe))
+			p = &parent->rb_left;
+		else
+			p = &parent->rb_right;
+	}
 
 	rb_link_node_rcu(&new->node, parent, p);
 	rb_insert_color(&new->node, &priv->root);
···
 	struct nft_rbtree *priv;
 	struct rb_node *node;
 	struct nft_set *set;
+	struct net *net;
+	u8 genmask;
 
 	priv = container_of(work, struct nft_rbtree, gc_work.work);
 	set  = nft_set_container_of(priv);
+	net  = read_pnet(&set->net);
+	genmask = nft_genmask_cur(net);
 
 	write_lock_bh(&priv->lock);
 	write_seqcount_begin(&priv->count);
 	for (node = rb_first(&priv->root); node != NULL; node = rb_next(node)) {
 		rbe = rb_entry(node, struct nft_rbtree_elem, node);
 
+		if (!nft_set_elem_active(&rbe->ext, genmask))
+			continue;
+
+		/* elements are reversed in the rbtree for historical reasons,
+		 * from highest to lowest value, that is why end element is
+		 * always visited before the start element.
+		 */
 		if (nft_rbtree_interval_end(rbe)) {
 			rbe_end = rbe;
 			continue;
 		}
 		if (!nft_set_elem_expired(&rbe->ext))
 			continue;
-		if (nft_set_elem_mark_busy(&rbe->ext))
+
+		if (nft_set_elem_mark_busy(&rbe->ext)) {
+			rbe_end = NULL;
 			continue;
+		}
 
 		if (rbe_prev) {
 			rb_erase(&rbe_prev->node, &priv->root);

net/netlink/af_netlink.c

···
 	if (nlk_sk(sk)->bound)
 		goto err;
 
-	nlk_sk(sk)->portid = portid;
+	/* portid can be read locklessly from netlink_getname(). */
+	WRITE_ONCE(nlk_sk(sk)->portid, portid);
+
 	sock_hold(sk);
 
 	err = __netlink_insert(table, sk);
···
 		return -EINVAL;
 
 	if (addr->sa_family == AF_UNSPEC) {
-		sk->sk_state	= NETLINK_UNCONNECTED;
-		nlk->dst_portid	= 0;
-		nlk->dst_group  = 0;
+		/* paired with READ_ONCE() in netlink_getsockbyportid() */
+		WRITE_ONCE(sk->sk_state, NETLINK_UNCONNECTED);
+		/* dst_portid and dst_group can be read locklessly */
+		WRITE_ONCE(nlk->dst_portid, 0);
+		WRITE_ONCE(nlk->dst_group, 0);
 		return 0;
 	}
 	if (addr->sa_family != AF_NETLINK)
···
 		err = netlink_autobind(sock);
 
 	if (err == 0) {
-		sk->sk_state	= NETLINK_CONNECTED;
-		nlk->dst_portid = nladdr->nl_pid;
-		nlk->dst_group  = ffs(nladdr->nl_groups);
+		/* paired with READ_ONCE() in netlink_getsockbyportid() */
+		WRITE_ONCE(sk->sk_state, NETLINK_CONNECTED);
+		/* dst_portid and dst_group can be read locklessly */
+		WRITE_ONCE(nlk->dst_portid, nladdr->nl_pid);
+		WRITE_ONCE(nlk->dst_group, ffs(nladdr->nl_groups));
 	}
 
 	return err;
···
 	nladdr->nl_pad = 0;
 
 	if (peer) {
-		nladdr->nl_pid = nlk->dst_portid;
-		nladdr->nl_groups = netlink_group_mask(nlk->dst_group);
+		/* Paired with WRITE_ONCE() in netlink_connect() */
+		nladdr->nl_pid = READ_ONCE(nlk->dst_portid);
+		nladdr->nl_groups = netlink_group_mask(READ_ONCE(nlk->dst_group));
 	} else {
-		nladdr->nl_pid = nlk->portid;
+		/* Paired with WRITE_ONCE() in netlink_insert() */
+		nladdr->nl_pid = READ_ONCE(nlk->portid);
 		netlink_lock_table();
 		nladdr->nl_groups = nlk->groups ? nlk->groups[0] : 0;
 		netlink_unlock_table();
···
 
 	/* Don't bother queuing skb if kernel socket has no input function */
 	nlk = nlk_sk(sock);
-	if (sock->sk_state == NETLINK_CONNECTED &&
-	    nlk->dst_portid != nlk_sk(ssk)->portid) {
+	/* dst_portid and sk_state can be changed in netlink_connect() */
+	if (READ_ONCE(sock->sk_state) == NETLINK_CONNECTED &&
+	    READ_ONCE(nlk->dst_portid) != nlk_sk(ssk)->portid) {
 		sock_put(sock);
 		return ERR_PTR(-ECONNREFUSED);
 	}
···
 			goto out;
 		netlink_skb_flags |= NETLINK_SKB_DST;
 	} else {
-		dst_portid = nlk->dst_portid;
-		dst_group = nlk->dst_group;
+		/* Paired with WRITE_ONCE() in netlink_connect() */
+		dst_portid = READ_ONCE(nlk->dst_portid);
+		dst_group = READ_ONCE(nlk->dst_group);
 	}
 
 	/* Paired with WRITE_ONCE() in netlink_insert() */

net/netrom/nr_timer.c

···
 		   is accepted() it isn't 'dead' so doesn't get removed. */
 		if (sock_flag(sk, SOCK_DESTROY) ||
 		    (sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) {
+			sock_hold(sk);
 			bh_unlock_sock(sk);
 			nr_destroy_socket(sk);
 			goto out;

net/sched/sch_taprio.c

···
 	int i;
 
 	hrtimer_cancel(&q->advance_timer);
-	qdisc_synchronize(sch);
 
 	if (q->qdiscs) {
 		for (i = 0; i < dev->num_tx_queues; i++)

net/sctp/bind_addr.c

···
 		}
 	}
 
+	/* If somehow no addresses were found that can be used with this
+	 * scope, it's an error.
+	 */
+	if (list_empty(&dest->address_list))
+		error = -ENETUNREACH;
+
 out:
 	if (error)
 		sctp_bind_addr_clean(dest);

net/x25/af_x25.c

···
 	int rc = -EOPNOTSUPP;
 
 	lock_sock(sk);
+	if (sock->state != SS_UNCONNECTED) {
+		rc = -EINVAL;
+		release_sock(sk);
+		return rc;
+	}
+
 	if (sk->sk_state != TCP_LISTEN) {
 		memset(&x25_sk(sk)->dest_addr, 0, X25_ADDR_LEN);
 		sk->sk_max_ack_backlog = backlog;