regulator: max20086: Fixes chip id and enable gpio

Merge series from João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com>:

I'm working on integrating a system with a MAX20086 and noticed these
small issues in the driver: the chip ID for MAX20086 is 0x30 and not
0x40. Also, in my use case, the enable pin is always enabled by
hardware, so the enable GPIO isn't needed. Without these changes, the
driver fails to probe.

37 files changed, 280 insertions, 165 deletions

diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index 860a0786bc1e..20b316207f9a 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -9,7 +9,7 @@
 
 config BATMAN_ADV
 	tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
-	select LIBCRC32C
+	select CRC32
 	help
 	  B.A.T.M.A.N. (better approach to mobile ad-hoc networking) is
 	  a routing protocol for multi-hop ad-hoc mesh networks. The
diff --git a/net/ceph/Kconfig b/net/ceph/Kconfig
index c5c4eef3a9ff..0aa21fcbf6ec 100644
--- a/net/ceph/Kconfig
+++ b/net/ceph/Kconfig
@@ -2,7 +2,7 @@
 config CEPH_LIB
 	tristate "Ceph core library"
 	depends on INET
-	select LIBCRC32C
+	select CRC32
 	select CRYPTO_AES
 	select CRYPTO_CBC
 	select CRYPTO_GCM
diff --git a/net/core/dev.c b/net/core/dev.c
index 0608605cfc24..75e104322ad5 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1518,15 +1518,7 @@ void netdev_features_change(struct net_device *dev)
 }
 EXPORT_SYMBOL(netdev_features_change);
 
-/**
- *	netdev_state_change - device changes state
- *	@dev: device to cause notification
- *
- *	Called to indicate a device has changed state. This function calls
- *	the notifier chains for netdev_chain and sends a NEWLINK message
- *	to the routing socket.
- */
-void netdev_state_change(struct net_device *dev)
+void netif_state_change(struct net_device *dev)
 {
 	if (dev->flags & IFF_UP) {
 		struct netdev_notifier_change_info change_info = {
@@ -1538,7 +1530,6 @@ void netdev_state_change(struct net_device *dev)
 		rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL, 0, NULL);
 	}
 }
-EXPORT_SYMBOL(netdev_state_change);
 
 /**
  * __netdev_notify_peers - notify network peers about existence of @dev,
diff --git a/net/core/dev_api.c b/net/core/dev_api.c
index 90bafb0b1b8c..90898cd540ce 100644
--- a/net/core/dev_api.c
+++ b/net/core/dev_api.c
@@ -327,3 +327,19 @@ int dev_xdp_propagate(struct net_device *dev, struct netdev_bpf *bpf)
 	return ret;
 }
 EXPORT_SYMBOL_GPL(dev_xdp_propagate);
+
+/**
+ * netdev_state_change() - device changes state
+ * @dev: device to cause notification
+ *
+ * Called to indicate a device has changed state. This function calls
+ * the notifier chains for netdev_chain and sends a NEWLINK message
+ * to the routing socket.
+ */
+void netdev_state_change(struct net_device *dev)
+{
+	netdev_lock_ops(dev);
+	netif_state_change(dev);
+	netdev_unlock_ops(dev);
+}
+EXPORT_SYMBOL(netdev_state_change);
diff --git a/net/core/filter.c b/net/core/filter.c
index bc6828761a47..79cab4d78dc3 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -218,24 +218,36 @@ BPF_CALL_3(bpf_skb_get_nlattr_nest, struct sk_buff *, skb, u32, a, u32, x)
 	return 0;
 }
 
+static int bpf_skb_load_helper_convert_offset(const struct sk_buff *skb, int offset)
+{
+	if (likely(offset >= 0))
+		return offset;
+
+	if (offset >= SKF_NET_OFF)
+		return offset - SKF_NET_OFF + skb_network_offset(skb);
+
+	if (offset >= SKF_LL_OFF && skb_mac_header_was_set(skb))
+		return offset - SKF_LL_OFF + skb_mac_offset(skb);
+
+	return INT_MIN;
+}
+
 BPF_CALL_4(bpf_skb_load_helper_8, const struct sk_buff *, skb, const void *,
 	   data, int, headlen, int, offset)
 {
-	u8 tmp, *ptr;
+	u8 tmp;
 	const int len = sizeof(tmp);
 
-	if (offset >= 0) {
-		if (headlen - offset >= len)
-			return *(u8 *)(data + offset);
-		if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp)))
-			return tmp;
-	} else {
-		ptr = bpf_internal_load_pointer_neg_helper(skb, offset, len);
-		if (likely(ptr))
-			return *(u8 *)ptr;
-	}
+	offset = bpf_skb_load_helper_convert_offset(skb, offset);
+	if (offset == INT_MIN)
+		return -EFAULT;
 
-	return -EFAULT;
+	if (headlen - offset >= len)
+		return *(u8 *)(data + offset);
+	if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp)))
+		return tmp;
+	else
+		return -EFAULT;
 }
 
 BPF_CALL_2(bpf_skb_load_helper_8_no_cache, const struct sk_buff *, skb,
@@ -248,21 +260,19 @@ BPF_CALL_2(bpf_skb_load_helper_8_no_cache, const struct sk_buff *, skb,
 BPF_CALL_4(bpf_skb_load_helper_16, const struct sk_buff *, skb, const void *,
 	   data, int, headlen, int, offset)
 {
-	__be16 tmp, *ptr;
+	__be16 tmp;
 	const int len = sizeof(tmp);
 
-	if (offset >= 0) {
-		if (headlen - offset >= len)
-			return get_unaligned_be16(data + offset);
-		if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp)))
-			return be16_to_cpu(tmp);
-	} else {
-		ptr = bpf_internal_load_pointer_neg_helper(skb, offset, len);
-		if (likely(ptr))
-			return get_unaligned_be16(ptr);
-	}
+	offset = bpf_skb_load_helper_convert_offset(skb, offset);
+	if (offset == INT_MIN)
+		return -EFAULT;
 
-	return -EFAULT;
+	if (headlen - offset >= len)
+		return get_unaligned_be16(data + offset);
+	if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp)))
+		return be16_to_cpu(tmp);
+	else
+		return -EFAULT;
 }
 
 BPF_CALL_2(bpf_skb_load_helper_16_no_cache, const struct sk_buff *, skb,
@@ -275,21 +285,19 @@ BPF_CALL_2(bpf_skb_load_helper_16_no_cache, const struct sk_buff *, skb,
 BPF_CALL_4(bpf_skb_load_helper_32, const struct sk_buff *, skb, const void *,
 	   data, int, headlen, int, offset)
 {
-	__be32 tmp, *ptr;
+	__be32 tmp;
 	const int len = sizeof(tmp);
 
-	if (likely(offset >= 0)) {
-		if (headlen - offset >= len)
-			return get_unaligned_be32(data + offset);
-		if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp)))
-			return be32_to_cpu(tmp);
-	} else {
-		ptr = bpf_internal_load_pointer_neg_helper(skb, offset, len);
-		if (likely(ptr))
-			return get_unaligned_be32(ptr);
-	}
+	offset = bpf_skb_load_helper_convert_offset(skb, offset);
+	if (offset == INT_MIN)
+		return -EFAULT;
 
-	return -EFAULT;
+	if (headlen - offset >= len)
+		return get_unaligned_be32(data + offset);
+	if (!skb_copy_bits(skb, offset, &tmp, sizeof(tmp)))
+		return be32_to_cpu(tmp);
+	else
+		return -EFAULT;
 }
 
 BPF_CALL_2(bpf_skb_load_helper_32_no_cache, const struct sk_buff *, skb,
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index cb04ef2b9807..864f3bbc3a4c 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -183,7 +183,7 @@ static void linkwatch_do_dev(struct net_device *dev)
 		else
 			dev_deactivate(dev);
 
-		netdev_state_change(dev);
+		netif_state_change(dev);
 	}
 	/* Note: our callers are responsible for calling netdev_tracker_free().
 	 * This is the reason we use __dev_put() instead of dev_put().
@@ -240,7 +240,9 @@ static void __linkwatch_run_queue(int urgent_only)
 		 */
 		netdev_tracker_free(dev, &dev->linkwatch_dev_tracker);
 		spin_unlock_irq(&lweventlist_lock);
+		netdev_lock_ops(dev);
 		linkwatch_do_dev(dev);
+		netdev_unlock_ops(dev);
 		do_dev--;
 		spin_lock_irq(&lweventlist_lock);
 	}
@@ -253,25 +255,41 @@ static void __linkwatch_run_queue(int urgent_only)
 	spin_unlock_irq(&lweventlist_lock);
 }
 
-void linkwatch_sync_dev(struct net_device *dev)
+static bool linkwatch_clean_dev(struct net_device *dev)
 {
 	unsigned long flags;
-	int clean = 0;
+	bool clean = false;
 
 	spin_lock_irqsave(&lweventlist_lock, flags);
 	if (!list_empty(&dev->link_watch_list)) {
 		list_del_init(&dev->link_watch_list);
-		clean = 1;
+		clean = true;
 		/* We must release netdev tracker under
 		 * the spinlock protection.
 		 */
 		netdev_tracker_free(dev, &dev->linkwatch_dev_tracker);
 	}
 	spin_unlock_irqrestore(&lweventlist_lock, flags);
-	if (clean)
+
+	return clean;
+}
+
+void __linkwatch_sync_dev(struct net_device *dev)
+{
+	netdev_ops_assert_locked(dev);
+
+	if (linkwatch_clean_dev(dev))
 		linkwatch_do_dev(dev);
 }
 
+void linkwatch_sync_dev(struct net_device *dev)
+{
+	if (linkwatch_clean_dev(dev)) {
+		netdev_lock_ops(dev);
+		linkwatch_do_dev(dev);
+		netdev_unlock_ops(dev);
+	}
+}
 
 /* Must be called with the rtnl semaphore held */
 void linkwatch_run_queue(void)
diff --git a/net/core/lock_debug.c b/net/core/lock_debug.c
index b7f22dc92a6f..941e26c1343d 100644
--- a/net/core/lock_debug.c
+++ b/net/core/lock_debug.c
@@ -20,11 +20,11 @@ int netdev_debug_event(struct notifier_block *nb, unsigned long event,
 	switch (cmd) {
 	case NETDEV_REGISTER:
 	case NETDEV_UP:
+	case NETDEV_CHANGE:
 		netdev_ops_assert_locked(dev);
 		fallthrough;
 	case NETDEV_DOWN:
 	case NETDEV_REBOOT:
-	case NETDEV_CHANGE:
 	case NETDEV_UNREGISTER:
 	case NETDEV_CHANGEMTU:
 	case NETDEV_CHANGEADDR:
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index c23852835050..39a5b72e861f 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1043,7 +1043,7 @@ int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
 }
 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
 
-void netdev_set_operstate(struct net_device *dev, int newstate)
+void netif_set_operstate(struct net_device *dev, int newstate)
 {
 	unsigned int old = READ_ONCE(dev->operstate);
 
@@ -1052,9 +1052,9 @@ void netdev_set_operstate(struct net_device *dev, int newstate)
 			return;
 	} while (!try_cmpxchg(&dev->operstate, &old, newstate));
 
-	netdev_state_change(dev);
+	netif_state_change(dev);
 }
-EXPORT_SYMBOL(netdev_set_operstate);
+EXPORT_SYMBOL(netif_set_operstate);
 
 static void set_operstate(struct net_device *dev, unsigned char transition)
 {
@@ -1080,7 +1080,7 @@ static void set_operstate(struct net_device *dev, unsigned char transition)
 		break;
 	}
 
-	netdev_set_operstate(dev, operstate);
+	netif_set_operstate(dev, operstate);
 }
 
 static unsigned int rtnl_dev_get_flags(const struct net_device *dev)
@@ -3027,7 +3027,7 @@ static int do_setlink(const struct sk_buff *skb, struct net_device *dev,
 
 	err = validate_linkmsg(dev, tb, extack);
 	if (err < 0)
-		goto errout;
+		return err;
 
 	if (tb[IFLA_IFNAME])
 		nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
@@ -3396,7 +3396,7 @@ static int do_setlink(const struct sk_buff *skb, struct net_device *dev,
 errout:
 	if (status & DO_SETLINK_MODIFIED) {
 		if ((status & DO_SETLINK_NOTIFY) == DO_SETLINK_NOTIFY)
-			netdev_state_change(dev);
+			netif_state_change(dev);
 
 		if (err < 0)
 			net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n",
@@ -3676,8 +3676,11 @@ struct net_device *rtnl_create_link(struct net *net, const char *ifname,
 				nla_len(tb[IFLA_BROADCAST]));
 	if (tb[IFLA_TXQLEN])
 		dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
-	if (tb[IFLA_OPERSTATE])
+	if (tb[IFLA_OPERSTATE]) {
+		netdev_lock_ops(dev);
 		set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
+		netdev_unlock_ops(dev);
+	}
 	if (tb[IFLA_LINKMODE])
 		dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
 	if (tb[IFLA_GROUP])
diff --git a/net/core/sock.c b/net/core/sock.c
index f67a3c5b0988..e54449c9ab0b 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -2130,6 +2130,8 @@ lenout:
  */
 static inline void sock_lock_init(struct sock *sk)
 {
+	sk_owner_clear(sk);
+
 	if (sk->sk_kern_sock)
 		sock_lock_init_class_and_name(
 			sk,
@@ -2226,6 +2228,9 @@ static void sk_prot_free(struct proto *prot, struct sock *sk)
 	cgroup_sk_free(&sk->sk_cgrp_data);
 	mem_cgroup_sk_free(sk);
 	security_sk_free(sk);
+
+	sk_owner_put(sk);
+
 	if (slab != NULL)
 		kmem_cache_free(slab, sk);
 	else
diff --git a/net/ethtool/cmis.h b/net/ethtool/cmis.h
index 1e790413db0e..4a9a946cabf0 100644
--- a/net/ethtool/cmis.h
+++ b/net/ethtool/cmis.h
@@ -101,7 +101,6 @@ struct ethtool_cmis_cdb_rpl {
 };
 
 u32 ethtool_cmis_get_max_lpl_size(u8 num_of_byte_octs);
-u32 ethtool_cmis_get_max_epl_size(u8 num_of_byte_octs);
 
 void ethtool_cmis_cdb_compose_args(struct ethtool_cmis_cdb_cmd_args *args,
 				   enum ethtool_cmis_cdb_cmd_id cmd, u8 *lpl,
diff --git a/net/ethtool/cmis_cdb.c b/net/ethtool/cmis_cdb.c
index d159dc121bde..0e2691ccb0df 100644
--- a/net/ethtool/cmis_cdb.c
+++ b/net/ethtool/cmis_cdb.c
@@ -16,15 +16,6 @@ u32 ethtool_cmis_get_max_lpl_size(u8 num_of_byte_octs)
 	return 8 * (1 + min_t(u8, num_of_byte_octs, 15));
 }
 
-/* For accessing the EPL field on page 9Fh, the allowable length extension is
- * min(i, 255) byte octets where i specifies the allowable additional number of
- * byte octets in a READ or a WRITE.
- */
-u32 ethtool_cmis_get_max_epl_size(u8 num_of_byte_octs)
-{
-	return 8 * (1 + min_t(u8, num_of_byte_octs, 255));
-}
-
 void ethtool_cmis_cdb_compose_args(struct ethtool_cmis_cdb_cmd_args *args,
 				   enum ethtool_cmis_cdb_cmd_id cmd, u8 *lpl,
 				   u8 lpl_len, u8 *epl, u16 epl_len,
@@ -33,19 +24,16 @@ void ethtool_cmis_cdb_compose_args(struct ethtool_cmis_cdb_cmd_args *args,
 {
 	args->req.id = cpu_to_be16(cmd);
 	args->req.lpl_len = lpl_len;
-	if (lpl) {
+	if (lpl)
 		memcpy(args->req.payload, lpl, args->req.lpl_len);
-		args->read_write_len_ext =
-			ethtool_cmis_get_max_lpl_size(read_write_len_ext);
-	}
 	if (epl) {
 		args->req.epl_len = cpu_to_be16(epl_len);
 		args->req.epl = epl;
-		args->read_write_len_ext =
-			ethtool_cmis_get_max_epl_size(read_write_len_ext);
 	}
 
 	args->max_duration = max_duration;
+	args->read_write_len_ext =
+		ethtool_cmis_get_max_lpl_size(read_write_len_ext);
 	args->msleep_pre_rpl = msleep_pre_rpl;
 	args->rpl_exp_len = rpl_exp_len;
 	args->flags = flags;
diff --git a/net/ethtool/common.c b/net/ethtool/common.c
index 0cb6da1f692a..49bea6b45bd5 100644
--- a/net/ethtool/common.c
+++ b/net/ethtool/common.c
@@ -830,6 +830,7 @@ void ethtool_ringparam_get_cfg(struct net_device *dev,
 
 	/* Driver gives us current state, we want to return current config */
 	kparam->tcp_data_split = dev->cfg->hds_config;
+	kparam->hds_thresh = dev->cfg->hds_thresh;
 }
 
 static void ethtool_init_tsinfo(struct kernel_ethtool_ts_info *info)
diff --git a/net/ethtool/ioctl.c b/net/ethtool/ioctl.c
index 221639407c72..8262cc10f98d 100644
--- a/net/ethtool/ioctl.c
+++ b/net/ethtool/ioctl.c
@@ -60,7 +60,7 @@ static struct devlink *netdev_to_devlink_get(struct net_device *dev)
 u32 ethtool_op_get_link(struct net_device *dev)
 {
 	/* Synchronize carrier state with link watch, see also rtnl_getlink() */
-	linkwatch_sync_dev(dev);
+	__linkwatch_sync_dev(dev);
 
 	return netif_carrier_ok(dev) ? 1 : 0;
 }
diff --git a/net/ethtool/netlink.c b/net/ethtool/netlink.c
index a163d40c6431..977beeaaa2f9 100644
--- a/net/ethtool/netlink.c
+++ b/net/ethtool/netlink.c
@@ -500,7 +500,7 @@ static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info)
 		netdev_unlock_ops(req_info->dev);
 	rtnl_unlock();
 	if (ret < 0)
-		goto err_cleanup;
+		goto err_dev;
 	ret = ops->reply_size(req_info, reply_data);
 	if (ret < 0)
 		goto err_cleanup;
@@ -560,7 +560,7 @@ static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev,
 	netdev_unlock_ops(dev);
 	rtnl_unlock();
 	if (ret < 0)
-		goto out;
+		goto out_cancel;
 	ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr);
 	if (ret < 0)
 		goto out;
@@ -569,6 +569,7 @@ static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev,
 out:
 	if (ctx->ops->cleanup_data)
 		ctx->ops->cleanup_data(ctx->reply_data);
+out_cancel:
 	ctx->reply_data->dev = NULL;
 	if (ret < 0)
 		genlmsg_cancel(skb, ehdr);
@@ -793,7 +794,7 @@ static void ethnl_default_notify(struct net_device *dev, unsigned int cmd,
 	ethnl_init_reply_data(reply_data, ops, dev);
 	ret = ops->prepare_data(req_info, reply_data, &info);
 	if (ret < 0)
-		goto err_cleanup;
+		goto err_rep;
 	ret = ops->reply_size(req_info, reply_data);
 	if (ret < 0)
 		goto err_cleanup;
@@ -828,6 +829,7 @@ err_skb:
 err_cleanup:
 	if (ops->cleanup_data)
 		ops->cleanup_data(reply_data);
+err_rep:
 	kfree(reply_data);
 	kfree(req_info);
 	return;
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 439cfb7ad5d1..1b1b700ec05e 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -33,14 +33,14 @@ static void hsr_set_operstate(struct hsr_port *master, bool has_carrier)
 	struct net_device *dev = master->dev;
 
 	if (!is_admin_up(dev)) {
-		netdev_set_operstate(dev, IF_OPER_DOWN);
+		netif_set_operstate(dev, IF_OPER_DOWN);
 		return;
 	}
 
 	if (has_carrier)
-		netdev_set_operstate(dev, IF_OPER_UP);
+		netif_set_operstate(dev, IF_OPER_UP);
 	else
-		netdev_set_operstate(dev, IF_OPER_LOWERLAYERDOWN);
+		netif_set_operstate(dev, IF_OPER_LOWERLAYERDOWN);
 }
 
 static bool hsr_check_carrier(struct hsr_port *master)
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 2cffb8f4a2bc..9ba83f0c9928 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3154,12 +3154,13 @@ int addrconf_add_ifaddr(struct net *net, void __user *arg)
 
 	rtnl_net_lock(net);
 	dev = __dev_get_by_index(net, ireq.ifr6_ifindex);
-	netdev_lock_ops(dev);
-	if (dev)
+	if (dev) {
+		netdev_lock_ops(dev);
 		err = inet6_addr_add(net, dev, &cfg, 0, 0, NULL);
-	else
+		netdev_unlock_ops(dev);
+	} else {
 		err = -ENODEV;
-	netdev_unlock_ops(dev);
+	}
 	rtnl_net_unlock(net);
 	return err;
 }
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index ab12b816ab94..210b84cecc24 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -470,10 +470,10 @@ void fib6_select_path(const struct net *net, struct fib6_result *res,
 		goto out;
 
 	hash = fl6->mp_hash;
-	if (hash <= atomic_read(&first->fib6_nh->fib_nh_upper_bound) &&
-	    rt6_score_route(first->fib6_nh, first->fib6_flags, oif,
-			    strict) >= 0) {
-		match = first;
+	if (hash <= atomic_read(&first->fib6_nh->fib_nh_upper_bound)) {
+		if (rt6_score_route(first->fib6_nh, first->fib6_flags, oif,
+				    strict) >= 0)
+			match = first;
 		goto out;
 	}
 
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 409bd415ef1d..24c2de1891bd 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -899,13 +899,17 @@ create_child:
 				goto dispose_child;
 			}
 
-			if (!subflow_hmac_valid(req, &mp_opt) ||
-			    !mptcp_can_accept_new_subflow(subflow_req->msk)) {
+			if (!subflow_hmac_valid(req, &mp_opt)) {
 				SUBFLOW_REQ_INC_STATS(req, MPTCP_MIB_JOINACKMAC);
 				subflow_add_reset_reason(skb, MPTCP_RST_EPROHIBIT);
 				goto dispose_child;
 			}
 
+			if (!mptcp_can_accept_new_subflow(owner)) {
+				subflow_add_reset_reason(skb, MPTCP_RST_EPROHIBIT);
+				goto dispose_child;
+			}
+
 			/* move the msk reference ownership to the subflow */
 			subflow_req->msk = NULL;
 			ctx->conn = (struct sock *)owner;
diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
index df2dc21304ef..047ba81865ed 100644
--- a/net/netfilter/Kconfig
+++ b/net/netfilter/Kconfig
@@ -212,7 +212,7 @@ config NF_CT_PROTO_SCTP
 	bool 'SCTP protocol connection tracking support'
 	depends on NETFILTER_ADVANCED
 	default y
-	select LIBCRC32C
+	select CRC32
 	help
 	  With this option enabled, the layer 3 independent connection
 	  tracking code will be able to do state tracking on SCTP connections.
@@ -475,7 +475,7 @@ endif # NF_CONNTRACK
 
 config NF_TABLES
 	select NETFILTER_NETLINK
-	select LIBCRC32C
+	select CRC32
 	tristate "Netfilter nf_tables support"
 	help
 	  nftables is the new packet classification framework that intends to
diff --git a/net/netfilter/ipvs/Kconfig b/net/netfilter/ipvs/Kconfig
index 2a3017b9c001..8c5b1fe12d07 100644
--- a/net/netfilter/ipvs/Kconfig
+++ b/net/netfilter/ipvs/Kconfig
@@ -105,7 +105,7 @@ config	IP_VS_PROTO_AH
 
 config  IP_VS_PROTO_SCTP
 	bool "SCTP load balancing support"
-	select LIBCRC32C
+	select CRC32
 	help
 	  This option enables support for load balancing SCTP transport
 	  protocol. Say Y if unsure.
diff --git a/net/netfilter/nft_set_pipapo_avx2.c b/net/netfilter/nft_set_pipapo_avx2.c
index b8d3c3213efe..c15db28c5ebc 100644
--- a/net/netfilter/nft_set_pipapo_avx2.c
+++ b/net/netfilter/nft_set_pipapo_avx2.c
@@ -994,8 +994,9 @@ static int nft_pipapo_avx2_lookup_8b_16(unsigned long *map, unsigned long *fill,
 		NFT_PIPAPO_AVX2_BUCKET_LOAD8(5, lt,  8,  pkt[8], bsize);
 
 		NFT_PIPAPO_AVX2_AND(6, 2, 3);
+		NFT_PIPAPO_AVX2_AND(3, 4, 7);
 		NFT_PIPAPO_AVX2_BUCKET_LOAD8(7, lt,  9,  pkt[9], bsize);
-		NFT_PIPAPO_AVX2_AND(0, 4, 5);
+		NFT_PIPAPO_AVX2_AND(0, 3, 5);
 		NFT_PIPAPO_AVX2_BUCKET_LOAD8(1, lt, 10, pkt[10], bsize);
 		NFT_PIPAPO_AVX2_AND(2, 6, 7);
 		NFT_PIPAPO_AVX2_BUCKET_LOAD8(3, lt, 11, pkt[11], bsize);
diff --git a/net/openvswitch/Kconfig b/net/openvswitch/Kconfig
index 2535f3f9f462..5481bd561eb4 100644
--- a/net/openvswitch/Kconfig
+++ b/net/openvswitch/Kconfig
@@ -11,7 +11,7 @@ config OPENVSWITCH
 				     (!NF_NAT || NF_NAT) && \
 				     (!NETFILTER_CONNCOUNT || NETFILTER_CONNCOUNT)))
 	depends on PSAMPLE || !PSAMPLE
-	select LIBCRC32C
+	select CRC32
 	select MPLS
 	select NET_MPLS_GSO
 	select DST_CACHE
diff --git a/net/sched/Kconfig b/net/sched/Kconfig
index 8180d0c12fce..a800127effcd 100644
--- a/net/sched/Kconfig
+++ b/net/sched/Kconfig
@@ -784,7 +784,7 @@ config NET_ACT_SKBEDIT
 config NET_ACT_CSUM
 	tristate "Checksum Updating"
 	depends on NET_CLS_ACT && INET
-	select LIBCRC32C
+	select CRC32
 	help
 	  Say Y here to update some common checksum after some direct
 	  packet alterations.
diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index 4f648af8cfaa..ecec0a1e1c1a 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -2057,6 +2057,7 @@ static int tcf_fill_node(struct net *net, struct sk_buff *skb,
 	struct tcmsg *tcm;
 	struct nlmsghdr  *nlh;
 	unsigned char *b = skb_tail_pointer(skb);
+	int ret = -EMSGSIZE;
 
 	nlh = nlmsg_put(skb, portid, seq, event, sizeof(*tcm), flags);
 	if (!nlh)
@@ -2101,11 +2102,45 @@ static int tcf_fill_node(struct net *net, struct sk_buff *skb,
 
 	return skb->len;
 
+cls_op_not_supp:
+	ret = -EOPNOTSUPP;
 out_nlmsg_trim:
 nla_put_failure:
-cls_op_not_supp:
 	nlmsg_trim(skb, b);
-	return -1;
+	return ret;
+}
+
+static struct sk_buff *tfilter_notify_prep(struct net *net,
+					   struct sk_buff *oskb,
+					   struct nlmsghdr *n,
+					   struct tcf_proto *tp,
+					   struct tcf_block *block,
+					   struct Qdisc *q, u32 parent,
+					   void *fh, int event,
+					   u32 portid, bool rtnl_held,
+					   struct netlink_ext_ack *extack)
+{
+	unsigned int size = oskb ? max(NLMSG_GOODSIZE, oskb->len) : NLMSG_GOODSIZE;
+	struct sk_buff *skb;
+	int ret;
+
+retry:
+	skb = alloc_skb(size, GFP_KERNEL);
+	if (!skb)
+		return ERR_PTR(-ENOBUFS);
+
+	ret = tcf_fill_node(net, skb, tp, block, q, parent, fh, portid,
+			    n->nlmsg_seq, n->nlmsg_flags, event, false,
+			    rtnl_held, extack);
+	if (ret <= 0) {
+		kfree_skb(skb);
+		if (ret == -EMSGSIZE) {
+			size += NLMSG_GOODSIZE;
+			goto retry;
+		}
+		return ERR_PTR(-EINVAL);
+	}
+	return skb;
 }
 
 static int tfilter_notify(struct net *net, struct sk_buff *oskb,
@@ -2121,16 +2156,10 @@ static int tfilter_notify(struct net *net, struct sk_buff *oskb,
 	if (!unicast && !rtnl_notify_needed(net, n->nlmsg_flags, RTNLGRP_TC))
 		return 0;
 
-	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
-	if (!skb)
-		return -ENOBUFS;
-
-	if (tcf_fill_node(net, skb, tp, block, q, parent, fh, portid,
-			  n->nlmsg_seq, n->nlmsg_flags, event,
-			  false, rtnl_held, extack) <= 0) {
-		kfree_skb(skb);
-		return -EINVAL;
-	}
+	skb = tfilter_notify_prep(net, oskb, n, tp, block, q, parent, fh, event,
+				  portid, rtnl_held, extack);
+	if (IS_ERR(skb))
+		return PTR_ERR(skb);
 
 	if (unicast)
 		err = rtnl_unicast(skb, net, portid);
@@ -2153,16 +2182,11 @@ static int tfilter_del_notify(struct net *net, struct sk_buff *oskb,
 	if (!rtnl_notify_needed(net, n->nlmsg_flags, RTNLGRP_TC))
 		return tp->ops->delete(tp, fh, last, rtnl_held, extack);
 
-	skb = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
-	if (!skb)
-		return -ENOBUFS;
-
-	if (tcf_fill_node(net, skb, tp, block, q, parent, fh, portid,
-			  n->nlmsg_seq, n->nlmsg_flags, RTM_DELTFILTER,
-			  false, rtnl_held, extack) <= 0) {
+	skb = tfilter_notify_prep(net, oskb, n, tp, block, q, parent, fh,
+				  RTM_DELTFILTER, portid, rtnl_held, extack);
+	if (IS_ERR(skb)) {
 		NL_SET_ERR_MSG(extack, "Failed to build del event notification");
-		kfree_skb(skb);
-		return -EINVAL;
+		return PTR_ERR(skb);
 	}
 
 	err = tp->ops->delete(tp, fh, last, rtnl_held, extack);
diff --git a/net/sched/sch_codel.c b/net/sched/sch_codel.c
index 81189d02fee7..12dd71139da3 100644
--- a/net/sched/sch_codel.c
+++ b/net/sched/sch_codel.c
@@ -65,10 +65,7 @@ static struct sk_buff *codel_qdisc_dequeue(struct Qdisc *sch)
 			    &q->stats, qdisc_pkt_len, codel_get_enqueue_time,
 			    drop_func, dequeue_func);
 
-	/* We cant call qdisc_tree_reduce_backlog() if our qlen is 0,
-	 * or HTB crashes. Defer it for next round.
-	 */
-	if (q->stats.drop_count && sch->q.qlen) {
+	if (q->stats.drop_count) {
 		qdisc_tree_reduce_backlog(sch, q->stats.drop_count, q->stats.drop_len);
 		q->stats.drop_count = 0;
 		q->stats.drop_len = 0;
diff --git a/net/sched/sch_drr.c b/net/sched/sch_drr.c
index c69b999fae17..e0a81d313aa7 100644
--- a/net/sched/sch_drr.c
+++ b/net/sched/sch_drr.c
@@ -105,6 +105,7 @@ static int drr_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
 		return -ENOBUFS;
 
 	gnet_stats_basic_sync_init(&cl->bstats);
+	INIT_LIST_HEAD(&cl->alist);
 	cl->common.classid = classid;
 	cl->quantum	   = quantum;
 	cl->qdisc	   = qdisc_create_dflt(sch->dev_queue,
@@ -229,7 +230,7 @@ static void drr_qlen_notify(struct Qdisc *csh, unsigned long arg)
 {
 	struct drr_class *cl = (struct drr_class *)arg;
 
-	list_del(&cl->alist);
+	list_del_init(&cl->alist);
 }
 
 static int drr_dump_class(struct Qdisc *sch, unsigned long arg,
@@ -390,7 +391,7 @@ static struct sk_buff *drr_dequeue(struct Qdisc *sch)
 			if (unlikely(skb == NULL))
 				goto out;
 			if (cl->qdisc->q.qlen == 0)
-				list_del(&cl->alist);
+				list_del_init(&cl->alist);
 
 			bstats_update(&cl->bstats, skb);
 			qdisc_bstats_update(sch, skb);
@@ -431,7 +432,7 @@ static void drr_reset_qdisc(struct Qdisc *sch)
 	for (i = 0; i < q->clhash.hashsize; i++) {
 		hlist_for_each_entry(cl, &q->clhash.hash[i], common.hnode) {
 			if (cl->qdisc->q.qlen)
-				list_del(&cl->alist);
+				list_del_init(&cl->alist);
 			qdisc_reset(cl->qdisc);
 		}
 	}
diff --git a/net/sched/sch_ets.c b/net/sched/sch_ets.c
index 516038a44163..c3bdeb14185b 100644
--- a/net/sched/sch_ets.c
+++ b/net/sched/sch_ets.c
@@ -293,7 +293,7 @@ static void ets_class_qlen_notify(struct Qdisc *sch, unsigned long arg)
 	 * to remove them.
 	 */
 	if (!ets_class_is_strict(q, cl) && sch->q.qlen)
-		list_del(&cl->alist);
+		list_del_init(&cl->alist);
 }
 
 static int ets_class_dump(struct Qdisc *sch, unsigned long arg,
@@ -488,7 +488,7 @@ static struct sk_buff *ets_qdisc_dequeue(struct Qdisc *sch)
 			if (unlikely(!skb))
 				goto out;
 			if (cl->qdisc->q.qlen == 0)
-				list_del(&cl->alist);
+				list_del_init(&cl->alist);
 			return ets_qdisc_dequeue_skb(sch, skb);
 		}
 
@@ -657,7 +657,7 @@ static int ets_qdisc_change(struct Qdisc *sch, struct nlattr *opt,
 	}
 	for (i = q->nbands; i < oldbands; i++) {
 		if (i >= q->nstrict && q->classes[i].qdisc->q.qlen)
-			list_del(&q->classes[i].alist);
+			list_del_init(&q->classes[i].alist);
 		qdisc_tree_flush_backlog(q->classes[i].qdisc);
 	}
 	WRITE_ONCE(q->nstrict, nstrict);
@@ -713,7 +713,7 @@ static void ets_qdisc_reset(struct Qdisc *sch)
 
 	for (band = q->nstrict; band < q->nbands; band++) {
 		if (q->classes[band].qdisc->q.qlen)
-			list_del(&q->classes[band].alist);
+			list_del_init(&q->classes[band].alist);
 	}
 	for (band = 0; band < q->nbands; band++)
 		qdisc_reset(q->classes[band].qdisc);
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 799f5397ad4c..6c9029f71e88 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -315,10 +315,8 @@ begin:
 	}
 	qdisc_bstats_update(sch, skb);
 	flow->deficit -= qdisc_pkt_len(skb);
-	/* We cant call qdisc_tree_reduce_backlog() if our qlen is 0,
-	 * or HTB crashes. Defer it for next round.
-	 */
-	if (q->cstats.drop_count && sch->q.qlen) {
+
+	if (q->cstats.drop_count) {
 		qdisc_tree_reduce_backlog(sch, q->cstats.drop_count,
 					  q->cstats.drop_len);
 		q->cstats.drop_count = 0;
diff --git a/net/sched/sch_hfsc.c b/net/sched/sch_hfsc.c
index c287bf8423b4..ce5045eea065 100644
--- a/net/sched/sch_hfsc.c
+++ b/net/sched/sch_hfsc.c
@@ -203,7 +203,10 @@ eltree_insert(struct hfsc_class *cl)
 static inline void
 eltree_remove(struct hfsc_class *cl)
 {
-	rb_erase(&cl->el_node, &cl->sched->eligible);
+	if (!RB_EMPTY_NODE(&cl->el_node)) {
+		rb_erase(&cl->el_node, &cl->sched->eligible);
+		RB_CLEAR_NODE(&cl->el_node);
+	}
 }
 
 static inline void
@@ -1220,7 +1223,8 @@ hfsc_qlen_notify(struct Qdisc *sch, unsigned long arg)
 	/* vttree is now handled in update_vf() so that update_vf(cl, 0, 0)
 	 * needs to be called explicitly to remove a class from vttree.
 	 */
-	update_vf(cl, 0, 0);
+	if (cl->cl_nactive)
+		update_vf(cl, 0, 0);
 	if (cl->cl_flags & HFSC_RSC)
 		eltree_remove(cl);
 }
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index c31bc5489bdd..4b9a639b642e 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -1485,6 +1485,8 @@ static void htb_qlen_notify(struct Qdisc *sch, unsigned long arg)
 {
 	struct htb_class *cl = (struct htb_class *)arg;
 
+	if (!cl->prio_activity)
+		return;
 	htb_deactivate(qdisc_priv(sch), cl);
 }
 
diff --git a/net/sched/sch_qfq.c b/net/sched/sch_qfq.c
index 2cfbc977fe6d..687a932eb9b2 100644
--- a/net/sched/sch_qfq.c
+++ b/net/sched/sch_qfq.c
@@ -347,7 +347,7 @@ static void qfq_deactivate_class(struct qfq_sched *q, struct qfq_class *cl)
 	struct qfq_aggregate *agg = cl->agg;
 
 
-	list_del(&cl->alist); /* remove from RR queue of the aggregate */
+	list_del_init(&cl->alist); /* remove from RR queue of the aggregate */
 	if (list_empty(&agg->active)) /* agg is now inactive */
 		qfq_deactivate_agg(q, agg);
 }
@@ -474,6 +474,7 @@ static int qfq_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
 	gnet_stats_basic_sync_init(&cl->bstats);
 	cl->common.classid = classid;
 	cl->deficit = lmax;
+	INIT_LIST_HEAD(&cl->alist);
 
 	cl->qdisc = qdisc_create_dflt(sch->dev_queue, &pfifo_qdisc_ops,
 				      classid, NULL);
@@ -982,7 +983,7 @@ static struct sk_buff *agg_dequeue(struct qfq_aggregate *agg,
 	cl->deficit -= (int) len;
 
 	if (cl->qdisc->q.qlen == 0) /* no more packets, remove from list */
-		list_del(&cl->alist);
+		list_del_init(&cl->alist);
 	else if (cl->deficit < qdisc_pkt_len(cl->qdisc->ops->peek(cl->qdisc))) {
 		cl->deficit += agg->lmax;
 		list_move_tail(&cl->alist, &agg->active);
@@ -1415,6 +1416,8 @@ static void qfq_qlen_notify(struct Qdisc *sch, unsigned long arg)
 	struct qfq_sched *q = qdisc_priv(sch);
 	struct qfq_class *cl = (struct qfq_class *)arg;
 
+	if (list_empty(&cl->alist))
+		return;
 	qfq_deactivate_class(q, cl);
 }
 
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index 9ed197e96396..b912ad99aa15 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -631,6 +631,15 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt,
 	struct red_parms *p = NULL;
 	struct sk_buff *to_free = NULL;
 	struct sk_buff *tail = NULL;
+	unsigned int maxflows;
+	unsigned int quantum;
+	unsigned int divisor;
+	int perturb_period;
+	u8 headdrop;
+	u8 maxdepth;
+	int limit;
+	u8 flags;
+
 
 	if (opt->nla_len < nla_attr_size(sizeof(*ctl)))
 		return -EINVAL;
@@ -652,39 +661,64 @@ static int sfq_change(struct Qdisc *sch, struct nlattr *opt,
 		if (!p)
 			return -ENOMEM;
 	}
-	if (ctl->limit == 1) {
-		NL_SET_ERR_MSG_MOD(extack, "invalid limit");
-		return -EINVAL;
-	}
+
 	sch_tree_lock(sch);
+
+	limit = q->limit;
+	divisor = q->divisor;
+	headdrop = q->headdrop;
+	maxdepth = q->maxdepth;
+	maxflows = q->maxflows;
+	perturb_period = q->perturb_period;
+	quantum = q->quantum;
+	flags = q->flags;
+
+	/* update and validate configuration */
 	if (ctl->quantum)
-		q->quantum = ctl->quantum;
-	WRITE_ONCE(q->perturb_period, ctl->perturb_period * HZ);
+		quantum = ctl->quantum;
+	perturb_period = ctl->perturb_period * HZ;
 	if (ctl->flows)
-		q->maxflows = min_t(u32, ctl->flows, SFQ_MAX_FLOWS);
+		maxflows = min_t(u32, ctl->flows, SFQ_MAX_FLOWS);
 	if (ctl->divisor) {
-		q->divisor = ctl->divisor;
-		q->maxflows = min_t(u32, q->maxflows, q->divisor);
+		divisor = ctl->divisor;
+		maxflows = min_t(u32, maxflows, divisor);
 	}
 	if (ctl_v1) {
 		if (ctl_v1->depth)
-			q->maxdepth = min_t(u32, ctl_v1->depth, SFQ_MAX_DEPTH);
+			maxdepth = min_t(u32, ctl_v1->depth, SFQ_MAX_DEPTH);
 		if (p) {
-			swap(q->red_parms, p);
-			red_set_parms(q->red_parms,
+			red_set_parms(p,
 				      ctl_v1->qth_min, ctl_v1->qth_max,
 				      ctl_v1->Wlog,
 				      ctl_v1->Plog, ctl_v1->Scell_log,
 				      NULL,
 				      ctl_v1->max_P);
 		}
-		q->flags = ctl_v1->flags;
-		q->headdrop = ctl_v1->headdrop;
+		flags = ctl_v1->flags;
+		headdrop = ctl_v1->headdrop;
 	}
 	if (ctl->limit) {
-		q->limit = min_t(u32, ctl->limit, q->maxdepth * q->maxflows);
-		q->maxflows = min_t(u32, q->maxflows, q->limit);
+		limit = min_t(u32, ctl->limit, maxdepth * maxflows);
+		maxflows = min_t(u32, maxflows, limit);
 	}
+	if (limit == 1) {
+		sch_tree_unlock(sch);
+		kfree(p);
+		NL_SET_ERR_MSG_MOD(extack, "invalid limit");
+		return -EINVAL;
+	}
+
+	/* commit configuration */
+	q->limit = limit;
+	q->divisor = divisor;
+	q->headdrop = headdrop;
+	q->maxdepth = maxdepth;
+	q->maxflows = maxflows;
+	WRITE_ONCE(q->perturb_period, perturb_period);
+	q->quantum = quantum;
+	q->flags = flags;
+	if (p)
+		swap(q->red_parms, p);
 
 	qlen = sch->q.qlen;
 	while (sch->q.qlen > q->limit) {
diff --git a/net/sctp/Kconfig b/net/sctp/Kconfig
index 5da599ff84a9..d18a72df3654 100644
--- a/net/sctp/Kconfig
+++ b/net/sctp/Kconfig
@@ -7,10 +7,10 @@ menuconfig IP_SCTP
 	tristate "The SCTP Protocol"
 	depends on INET
 	depends on IPV6 || IPV6=n
+	select CRC32
 	select CRYPTO
 	select CRYPTO_HMAC
 	select CRYPTO_SHA1
-	select LIBCRC32C
 	select NET_UDP_TUNNEL
 	help
 	  Stream Control Transmission Protocol
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 36ee34f483d7..53725ee7ba06 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -72,8 +72,9 @@
 /* Forward declarations for internal helper functions. */
 static bool sctp_writeable(const struct sock *sk);
 static void sctp_wfree(struct sk_buff *skb);
-static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
-				size_t msg_len);
+static int sctp_wait_for_sndbuf(struct sctp_association *asoc,
+				struct sctp_transport *transport,
+				long *timeo_p, size_t msg_len);
 static int sctp_wait_for_packet(struct sock *sk, int *err, long *timeo_p);
 static int sctp_wait_for_connect(struct sctp_association *, long *timeo_p);
 static int sctp_wait_for_accept(struct sock *sk, long timeo);
@@ -1828,7 +1829,7 @@ static int sctp_sendmsg_to_asoc(struct sctp_association *asoc,
 
 	if (sctp_wspace(asoc) <= 0 || !sk_wmem_schedule(sk, msg_len)) {
 		timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT);
-		err = sctp_wait_for_sndbuf(asoc, &timeo, msg_len);
+		err = sctp_wait_for_sndbuf(asoc, transport, &timeo, msg_len);
 		if (err)
 			goto err;
 		if (unlikely(sinfo->sinfo_stream >= asoc->stream.outcnt)) {
@@ -9214,8 +9215,9 @@ void sctp_sock_rfree(struct sk_buff *skb)
 
 
 /* Helper function to wait for space in the sndbuf.  */
-static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
-				size_t msg_len)
+static int sctp_wait_for_sndbuf(struct sctp_association *asoc,
+				struct sctp_transport *transport,
+				long *timeo_p, size_t msg_len)
 {
 	struct sock *sk = asoc->base.sk;
 	long current_timeo = *timeo_p;
@@ -9225,7 +9227,9 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
 	pr_debug("%s: asoc:%p, timeo:%ld, msg_len:%zu\n", __func__, asoc,
 		 *timeo_p, msg_len);
 
-	/* Increment the association's refcnt.  */
+	/* Increment the transport and association's refcnt. */
+	if (transport)
+		sctp_transport_hold(transport);
 	sctp_association_hold(asoc);
 
 	/* Wait on the association specific sndbuf space. */
@@ -9234,7 +9238,7 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
 					  TASK_INTERRUPTIBLE);
 		if (asoc->base.dead)
 			goto do_dead;
-		if (!*timeo_p)
+		if ((!*timeo_p) || (transport && transport->dead))
 			goto do_nonblock;
 		if (sk->sk_err || asoc->state >= SCTP_STATE_SHUTDOWN_PENDING)
 			goto do_error;
@@ -9259,7 +9263,9 @@ static int sctp_wait_for_sndbuf(struct sctp_association *asoc, long *timeo_p,
 out:
 	finish_wait(&asoc->wait, &wait);
 
-	/* Release the association's refcnt.  */
+	/* Release the transport and association's refcnt. */
+	if (transport)
+		sctp_transport_put(transport);
 	sctp_association_put(asoc);
 
 	return err;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 59675f6d9e7d..6946c1462793 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -117,6 +117,8 @@ fail:
  */
 void sctp_transport_free(struct sctp_transport *transport)
 {
+	transport->dead = 1;
+
 	/* Try to delete the heartbeat timer.  */
 	if (timer_delete(&transport->hb_timer))
 		sctp_transport_put(transport);
diff --git a/net/tipc/link.c b/net/tipc/link.c
index 50c2e0846ea4..18be6ff4c3db 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -1046,6 +1046,7 @@ int tipc_link_xmit(struct tipc_link *l, struct sk_buff_head *list,
 	if (unlikely(l->backlog[imp].len >= l->backlog[imp].limit)) {
 		if (imp == TIPC_SYSTEM_IMPORTANCE) {
 			pr_warn("%s<%s>, link overflow", link_rst_msg, l->name);
+			__skb_queue_purge(list);
 			return -ENOBUFS;
 		}
 		rc = link_schedule_user(l, hdr);
diff --git a/net/tls/tls_main.c b/net/tls/tls_main.c
index cb86b0bf9a53..a3ccb3135e51 100644
--- a/net/tls/tls_main.c
+++ b/net/tls/tls_main.c
@@ -852,6 +852,11 @@ static int tls_setsockopt(struct sock *sk, int level, int optname,
 	return do_tls_setsockopt(sk, optname, optval, optlen);
 }
 
+static int tls_disconnect(struct sock *sk, int flags)
+{
+	return -EOPNOTSUPP;
+}
+
 struct tls_context *tls_ctx_create(struct sock *sk)
 {
 	struct inet_connection_sock *icsk = inet_csk(sk);
@@ -947,6 +952,7 @@ static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
 	prot[TLS_BASE][TLS_BASE] = *base;
 	prot[TLS_BASE][TLS_BASE].setsockopt	= tls_setsockopt;
 	prot[TLS_BASE][TLS_BASE].getsockopt	= tls_getsockopt;
+	prot[TLS_BASE][TLS_BASE].disconnect	= tls_disconnect;
 	prot[TLS_BASE][TLS_BASE].close		= tls_sk_proto_close;
 
 	prot[TLS_SW][TLS_BASE] = prot[TLS_BASE][TLS_BASE];