Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from David Miller:

 1) Fix leak in nl80211 AP start where we leak the ACL memory, from
    Johannes Berg.

 2) Fix double mutex unlock in mac80211, from Andrei Otcheretianski.

 3) Fix RCU stall in ipset, from Jozsef Kadlecsik.

 4) Fix devlink locking in devlink_dpipe_table_register, from Madhuparna
    Bhowmik.

 5) Fix race causing TX hang in ll_temac, from Esben Haabendal.

 6) Stale eth hdr pointer in br_dev_xmit(), from Nikolay Aleksandrov.

 7) Fix TX hash calculation bounds checking wrt. tc rules, from Amritha
    Nambiar.

 8) Size netlink responses properly in schedule action code to take into
    consideration TCA_ACT_FLAGS. From Jiri Pirko.

 9) Fix firmware paths for mscc PHY driver, from Antoine Tenart.

10) Don't register stmmac notifier multiple times, from Aaro Koskinen.

11) Various rmnet bug fixes, from Taehee Yoo.

12) Fix vsock deadlock in vsock transport release, from Stefano
    Garzarella.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (61 commits)
  net: dsa: mv88e6xxx: Fix masking of egress port
  mlxsw: pci: Wait longer before accessing the device after reset
  sfc: fix timestamp reconstruction at 16-bit rollover points
  vsock: fix potential deadlock in transport->release()
  unix: It's CONFIG_PROC_FS not CONFIG_PROCFS
  net: rmnet: fix packet forwarding in rmnet bridge mode
  net: rmnet: fix bridge mode bugs
  net: rmnet: use upper/lower device infrastructure
  net: rmnet: do not allow to change mux id if mux id is duplicated
  net: rmnet: remove rcu_read_lock in rmnet_force_unassociate_device()
  net: rmnet: fix suspicious RCU usage
  net: rmnet: fix NULL pointer dereference in rmnet_changelink()
  net: rmnet: fix NULL pointer dereference in rmnet_newlink()
  net: phy: marvell: don't interpret PHY status unless resolved
  mlx5: register lag notifier for init network namespace only
  unix: define and set show_fdinfo only if procfs is enabled
  hinic: fix a bug of rss configuration
  hinic: fix a bug of setting hw_ioctxt
  hinic: fix a irq affinity bug
  net/smc: check for valid ib_client_data
  ...

27 files changed, 586 insertions, 276 deletions

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index dc3d2c1dd9d5..0e3dbc5f3c34 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -34,7 +34,6 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 	const struct nf_br_ops *nf_ops;
 	u8 state = BR_STATE_FORWARDING;
 	const unsigned char *dest;
-	struct ethhdr *eth;
 	u16 vid = 0;
 
 	rcu_read_lock();
@@ -54,15 +53,14 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
 	BR_INPUT_SKB_CB(skb)->frag_max_size = 0;
 
 	skb_reset_mac_header(skb);
-	eth = eth_hdr(skb);
 	skb_pull(skb, ETH_HLEN);
 
 	if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid, &state))
 		goto out;
 
 	if (IS_ENABLED(CONFIG_INET) &&
-	    (eth->h_proto == htons(ETH_P_ARP) ||
-	     eth->h_proto == htons(ETH_P_RARP)) &&
+	    (eth_hdr(skb)->h_proto == htons(ETH_P_ARP) ||
+	     eth_hdr(skb)->h_proto == htons(ETH_P_RARP)) &&
 	    br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED)) {
 		br_do_proxy_suppress_arp(skb, br, vid, NULL);
 	} else if (IS_ENABLED(CONFIG_IPV6) &&
diff --git a/net/core/dev.c b/net/core/dev.c
index e10bd680dc03..c6c985fe7b1b 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3076,6 +3076,8 @@ static u16 skb_tx_hash(const struct net_device *dev,
 
 	if (skb_rx_queue_recorded(skb)) {
 		hash = skb_get_rx_queue(skb);
+		if (hash >= qoffset)
+			hash -= qoffset;
 		while (unlikely(hash >= qcount))
 			hash -= qcount;
 		return hash + qoffset;
diff --git a/net/core/devlink.c b/net/core/devlink.c
index 549ee56b7a21..5e220809844c 100644
--- a/net/core/devlink.c
+++ b/net/core/devlink.c
@@ -2103,11 +2103,11 @@ err_action_values_put:
 
 static struct devlink_dpipe_table *
 devlink_dpipe_table_find(struct list_head *dpipe_tables,
-			 const char *table_name)
+			 const char *table_name, struct devlink *devlink)
 {
 	struct devlink_dpipe_table *table;
-
-	list_for_each_entry_rcu(table, dpipe_tables, list) {
+	list_for_each_entry_rcu(table, dpipe_tables, list,
+				lockdep_is_held(&devlink->lock)) {
 		if (!strcmp(table->name, table_name))
 			return table;
 	}
@@ -2226,7 +2226,7 @@ static int devlink_nl_cmd_dpipe_entries_get(struct sk_buff *skb,
 
 	table_name = nla_data(info->attrs[DEVLINK_ATTR_DPIPE_TABLE_NAME]);
 	table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
-					 table_name);
+					 table_name, devlink);
 	if (!table)
 		return -EINVAL;
 
@@ -2382,7 +2382,7 @@ static int devlink_dpipe_table_counters_set(struct devlink *devlink,
 	struct devlink_dpipe_table *table;
 
 	table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
-					 table_name);
+					 table_name, devlink);
 	if (!table)
 		return -EINVAL;
 
@@ -6854,7 +6854,7 @@ bool devlink_dpipe_table_counter_enabled(struct devlink *devlink,
 
 	rcu_read_lock();
 	table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
-					 table_name);
+					 table_name, devlink);
 	enabled = false;
 	if (table)
 		enabled = table->counters_enabled;
@@ -6878,26 +6878,34 @@ int devlink_dpipe_table_register(struct devlink *devlink,
 				 void *priv, bool counter_control_extern)
 {
 	struct devlink_dpipe_table *table;
-
-	if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name))
-		return -EEXIST;
+	int err = 0;
 
 	if (WARN_ON(!table_ops->size_get))
 		return -EINVAL;
 
+	mutex_lock(&devlink->lock);
+
+	if (devlink_dpipe_table_find(&devlink->dpipe_table_list, table_name,
+				     devlink)) {
+		err = -EEXIST;
+		goto unlock;
+	}
+
 	table = kzalloc(sizeof(*table), GFP_KERNEL);
-	if (!table)
-		return -ENOMEM;
+	if (!table) {
+		err = -ENOMEM;
+		goto unlock;
+	}
 
 	table->name = table_name;
 	table->table_ops = table_ops;
 	table->priv = priv;
 	table->counter_control_extern = counter_control_extern;
 
-	mutex_lock(&devlink->lock);
 	list_add_tail_rcu(&table->list, &devlink->dpipe_table_list);
+unlock:
 	mutex_unlock(&devlink->lock);
-	return 0;
+	return err;
 }
 EXPORT_SYMBOL_GPL(devlink_dpipe_table_register);
 
@@ -6914,7 +6922,7 @@ void devlink_dpipe_table_unregister(struct devlink *devlink,
 
 	mutex_lock(&devlink->lock);
 	table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
-					 table_name);
+					 table_name, devlink);
 	if (!table)
 		goto unlock;
 	list_del_rcu(&table->list);
@@ -7071,7 +7079,7 @@ int devlink_dpipe_table_resource_set(struct devlink *devlink,
 
 	mutex_lock(&devlink->lock);
 	table = devlink_dpipe_table_find(&devlink->dpipe_table_list,
-					 table_name);
+					 table_name, devlink);
 	if (!table) {
 		err = -EINVAL;
 		goto out;
diff --git a/net/ethtool/bitset.c b/net/ethtool/bitset.c
index 8977fe1f3946..ef9197541cb3 100644
--- a/net/ethtool/bitset.c
+++ b/net/ethtool/bitset.c
@@ -305,7 +305,8 @@ nla_put_failure:
 static const struct nla_policy bitset_policy[ETHTOOL_A_BITSET_MAX + 1] = {
 	[ETHTOOL_A_BITSET_UNSPEC]	= { .type = NLA_REJECT },
 	[ETHTOOL_A_BITSET_NOMASK]	= { .type = NLA_FLAG },
-	[ETHTOOL_A_BITSET_SIZE]		= { .type = NLA_U32 },
+	[ETHTOOL_A_BITSET_SIZE]		= NLA_POLICY_MAX(NLA_U32,
+							 ETHNL_MAX_BITSET_SIZE),
 	[ETHTOOL_A_BITSET_BITS]		= { .type = NLA_NESTED },
 	[ETHTOOL_A_BITSET_VALUE]	= { .type = NLA_BINARY },
 	[ETHTOOL_A_BITSET_MASK]		= { .type = NLA_BINARY },
diff --git a/net/ethtool/bitset.h b/net/ethtool/bitset.h
index b8247e34109d..b849f9d19676 100644
--- a/net/ethtool/bitset.h
+++ b/net/ethtool/bitset.h
@@ -3,6 +3,8 @@
 #ifndef _NET_ETHTOOL_BITSET_H
 #define _NET_ETHTOOL_BITSET_H
 
+#define ETHNL_MAX_BITSET_SIZE S16_MAX
+
 typedef const char (*const ethnl_string_array_t)[ETH_GSTRING_LEN];
 
 int ethnl_bitset_is_compact(const struct nlattr *bitset, bool *compact);
diff --git a/net/ipv4/cipso_ipv4.c b/net/ipv4/cipso_ipv4.c
index 376882215919..0bd10a1f477f 100644
--- a/net/ipv4/cipso_ipv4.c
+++ b/net/ipv4/cipso_ipv4.c
@@ -1724,6 +1724,7 @@ void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
 {
 	unsigned char optbuf[sizeof(struct ip_options) + 40];
 	struct ip_options *opt = (struct ip_options *)optbuf;
+	int res;
 
 	if (ip_hdr(skb)->protocol == IPPROTO_ICMP || error != -EACCES)
 		return;
@@ -1735,7 +1736,11 @@ void cipso_v4_error(struct sk_buff *skb, int error, u32 gateway)
 
 	memset(opt, 0, sizeof(struct ip_options));
 	opt->optlen = ip_hdr(skb)->ihl*4 - sizeof(struct iphdr);
-	if (__ip_options_compile(dev_net(skb->dev), opt, skb, NULL))
+	rcu_read_lock();
+	res = __ip_options_compile(dev_net(skb->dev), opt, skb, NULL);
+	rcu_read_unlock();
+
+	if (res)
 		return;
 
 	if (gateway)
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 316ebdf8151d..6b6b57000dad 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -6124,7 +6124,11 @@ static void tcp_rcv_synrecv_state_fastopen(struct sock *sk)
 {
 	struct request_sock *req;
 
-	tcp_try_undo_loss(sk, false);
+	/* If we are still handling the SYNACK RTO, see if timestamp ECR allows
+	 * undo. If peer SACKs triggered fast recovery, we can't undo here.
+	 */
+	if (inet_csk(sk)->icsk_ca_state == TCP_CA_Loss)
+		tcp_try_undo_loss(sk, false);
 
 	/* Reset rtx states to prevent spurious retransmits_timed_out() */
 	tcp_sk(sk)->retrans_stamp = 0;
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 79fc012dd2ca..debdaeba5d8c 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -183,9 +183,15 @@ static int do_ipv6_setsockopt(struct sock *sk, int level, int optname,
 					retv = -EBUSY;
 					break;
 				}
-			} else if (sk->sk_protocol != IPPROTO_TCP)
+			} else if (sk->sk_protocol == IPPROTO_TCP) {
+				if (sk->sk_prot != &tcpv6_prot) {
+					retv = -EBUSY;
+					break;
+				}
 				break;
-
+			} else {
+				break;
+			}
 			if (sk->sk_state != TCP_ESTABLISHED) {
 				retv = -ENOTCONN;
 				break;
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index e041af2f021a..88d7a692a965 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2959,7 +2959,7 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
 	    (auth_transaction == 2 &&
 	     ifmgd->auth_data->expected_transaction == 2)) {
 		if (!ieee80211_mark_sta_auth(sdata, bssid))
-			goto out_err;
+			return; /* ignore frame -- wait for timeout */
 	} else if (ifmgd->auth_data->algorithm == WLAN_AUTH_SAE &&
 		   auth_transaction == 2) {
 		sdata_info(sdata, "SAE peer confirmed\n");
@@ -2967,10 +2967,6 @@ static void ieee80211_rx_mgmt_auth(struct ieee80211_sub_if_data *sdata,
 	}
 
 	cfg80211_rx_mlme_mgmt(sdata->dev, (u8 *)mgmt, len);
-	return;
- out_err:
-	mutex_unlock(&sdata->local->sta_mtx);
-	/* ignore frame -- wait for timeout */
 }
 
 #define case_WLAN(type) \
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 0e05ff037672..0ba98ad9bc85 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -4114,7 +4114,7 @@ void __ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata)
 
 	lockdep_assert_held(&local->sta_mtx);
 
-	list_for_each_entry_rcu(sta, &local->sta_list, list) {
+	list_for_each_entry(sta, &local->sta_list, list) {
 		if (sdata != sta->sdata &&
 		    (!sta->sdata->bss || sta->sdata->bss != sdata->bss))
 			continue;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index e9aa6807b5be..3c19a8efdcea 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -543,6 +543,11 @@ static void __mptcp_close_ssk(struct sock *sk, struct sock *ssk,
 	}
 }
 
+static unsigned int mptcp_sync_mss(struct sock *sk, u32 pmtu)
+{
+	return 0;
+}
+
 static int __mptcp_init_sock(struct sock *sk)
 {
 	struct mptcp_sock *msk = mptcp_sk(sk);
@@ -551,6 +556,7 @@ static int __mptcp_init_sock(struct sock *sk)
 	__set_bit(MPTCP_SEND_SPACE, &msk->flags);
 
 	msk->first = NULL;
+	inet_csk(sk)->icsk_sync_mss = mptcp_sync_mss;
 
 	return 0;
 }
diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
index 69c107f9ba8d..8dd17589217d 100644
--- a/net/netfilter/ipset/ip_set_core.c
+++ b/net/netfilter/ipset/ip_set_core.c
@@ -723,6 +723,20 @@ ip_set_rcu_get(struct net *net, ip_set_id_t index)
 	return set;
 }
 
+static inline void
+ip_set_lock(struct ip_set *set)
+{
+	if (!set->variant->region_lock)
+		spin_lock_bh(&set->lock);
+}
+
+static inline void
+ip_set_unlock(struct ip_set *set)
+{
+	if (!set->variant->region_lock)
+		spin_unlock_bh(&set->lock);
+}
+
 int
 ip_set_test(ip_set_id_t index, const struct sk_buff *skb,
 	    const struct xt_action_param *par, struct ip_set_adt_opt *opt)
@@ -744,9 +758,9 @@ ip_set_test(ip_set_id_t index, const struct sk_buff *skb,
 	if (ret == -EAGAIN) {
 		/* Type requests element to be completed */
 		pr_debug("element must be completed, ADD is triggered\n");
-		spin_lock_bh(&set->lock);
+		ip_set_lock(set);
 		set->variant->kadt(set, skb, par, IPSET_ADD, opt);
-		spin_unlock_bh(&set->lock);
+		ip_set_unlock(set);
 		ret = 1;
 	} else {
 		/* --return-nomatch: invert matched element */
@@ -775,9 +789,9 @@ ip_set_add(ip_set_id_t index, const struct sk_buff *skb,
 	    !(opt->family == set->family || set->family == NFPROTO_UNSPEC))
 		return -IPSET_ERR_TYPE_MISMATCH;
 
-	spin_lock_bh(&set->lock);
+	ip_set_lock(set);
 	ret = set->variant->kadt(set, skb, par, IPSET_ADD, opt);
-	spin_unlock_bh(&set->lock);
+	ip_set_unlock(set);
 
 	return ret;
 }
@@ -797,9 +811,9 @@ ip_set_del(ip_set_id_t index, const struct sk_buff *skb,
 	    !(opt->family == set->family || set->family == NFPROTO_UNSPEC))
 		return -IPSET_ERR_TYPE_MISMATCH;
 
-	spin_lock_bh(&set->lock);
+	ip_set_lock(set);
 	ret = set->variant->kadt(set, skb, par, IPSET_DEL, opt);
-	spin_unlock_bh(&set->lock);
+	ip_set_unlock(set);
 
 	return ret;
 }
@@ -1264,9 +1278,9 @@ ip_set_flush_set(struct ip_set *set)
 {
 	pr_debug("set: %s\n",  set->name);
 
-	spin_lock_bh(&set->lock);
+	ip_set_lock(set);
 	set->variant->flush(set);
-	spin_unlock_bh(&set->lock);
+	ip_set_unlock(set);
 }
 
 static int ip_set_flush(struct net *net, struct sock *ctnl, struct sk_buff *skb,
@@ -1713,9 +1727,9 @@ call_ad(struct sock *ctnl, struct sk_buff *skb, struct ip_set *set,
 	bool eexist = flags & IPSET_FLAG_EXIST, retried = false;
 
 	do {
-		spin_lock_bh(&set->lock);
+		ip_set_lock(set);
 		ret = set->variant->uadt(set, tb, adt, &lineno, flags, retried);
-		spin_unlock_bh(&set->lock);
+		ip_set_unlock(set);
 		retried = true;
 	} while (ret == -EAGAIN &&
 		 set->variant->resize &&
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index 7480ce55b5c8..e52d7b7597a0 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -7,13 +7,21 @@
 #include <linux/rcupdate.h>
 #include <linux/jhash.h>
 #include <linux/types.h>
+#include <linux/netfilter/nfnetlink.h>
 #include <linux/netfilter/ipset/ip_set.h>
 
-#define __ipset_dereference_protected(p, c)	rcu_dereference_protected(p, c)
-#define ipset_dereference_protected(p, set) \
-	__ipset_dereference_protected(p, lockdep_is_held(&(set)->lock))
-
-#define rcu_dereference_bh_nfnl(p)	rcu_dereference_bh_check(p, 1)
+#define __ipset_dereference(p)		\
+	rcu_dereference_protected(p, 1)
+#define ipset_dereference_nfnl(p)	\
+	rcu_dereference_protected(p,	\
+		lockdep_nfnl_is_held(NFNL_SUBSYS_IPSET))
+#define ipset_dereference_set(p, set) 	\
+	rcu_dereference_protected(p,	\
+		lockdep_nfnl_is_held(NFNL_SUBSYS_IPSET) || \
+		lockdep_is_held(&(set)->lock))
+#define ipset_dereference_bh_nfnl(p)	\
+	rcu_dereference_bh_check(p, 	\
+		lockdep_nfnl_is_held(NFNL_SUBSYS_IPSET))
 
 /* Hashing which uses arrays to resolve clashing. The hash table is resized
  * (doubled) when searching becomes too long.
@@ -72,11 +80,35 @@ struct hbucket {
 		__aligned(__alignof__(u64));
 };
 
+/* Region size for locking == 2^HTABLE_REGION_BITS */
+#define HTABLE_REGION_BITS	10
+#define ahash_numof_locks(htable_bits)		\
+	((htable_bits) < HTABLE_REGION_BITS ? 1	\
+		: jhash_size((htable_bits) - HTABLE_REGION_BITS))
+#define ahash_sizeof_regions(htable_bits)		\
+	(ahash_numof_locks(htable_bits) * sizeof(struct ip_set_region))
+#define ahash_region(n, htable_bits)		\
+	((n) % ahash_numof_locks(htable_bits))
+#define ahash_bucket_start(h,  htable_bits)	\
+	((htable_bits) < HTABLE_REGION_BITS ? 0	\
+		: (h) * jhash_size(HTABLE_REGION_BITS))
+#define ahash_bucket_end(h,  htable_bits)	\
+	((htable_bits) < HTABLE_REGION_BITS ? jhash_size(htable_bits)	\
+		: ((h) + 1) * jhash_size(HTABLE_REGION_BITS))
+
+struct htable_gc {
+	struct delayed_work dwork;
+	struct ip_set *set;	/* Set the gc belongs to */
+	u32 region;		/* Last gc run position */
+};
+
 /* The hash table: the table size stored here in order to make resizing easy */
 struct htable {
 	atomic_t ref;		/* References for resizing */
-	atomic_t uref;		/* References for dumping */
+	atomic_t uref;		/* References for dumping and gc */
 	u8 htable_bits;		/* size of hash table == 2^htable_bits */
+	u32 maxelem;		/* Maxelem per region */
+	struct ip_set_region *hregion;	/* Region locks and ext sizes */
 	struct hbucket __rcu *bucket[0]; /* hashtable buckets */
 };
 
@@ -162,6 +194,10 @@ htable_bits(u32 hashsize)
 #define NLEN			0
 #endif /* IP_SET_HASH_WITH_NETS */
 
+#define SET_ELEM_EXPIRED(set, d)	\
+	(SET_WITH_TIMEOUT(set) &&	\
+	 ip_set_timeout_expired(ext_timeout(d, set)))
+
 #endif /* _IP_SET_HASH_GEN_H */
 
 #ifndef MTYPE
@@ -205,10 +241,12 @@ htable_bits(u32 hashsize)
 #undef mtype_test_cidrs
 #undef mtype_test
 #undef mtype_uref
-#undef mtype_expire
 #undef mtype_resize
+#undef mtype_ext_size
+#undef mtype_resize_ad
 #undef mtype_head
 #undef mtype_list
+#undef mtype_gc_do
 #undef mtype_gc
 #undef mtype_gc_init
 #undef mtype_variant
@@ -247,10 +285,12 @@ htable_bits(u32 hashsize)
 #define mtype_test_cidrs	IPSET_TOKEN(MTYPE, _test_cidrs)
 #define mtype_test		IPSET_TOKEN(MTYPE, _test)
 #define mtype_uref		IPSET_TOKEN(MTYPE, _uref)
-#define mtype_expire		IPSET_TOKEN(MTYPE, _expire)
 #define mtype_resize		IPSET_TOKEN(MTYPE, _resize)
+#define mtype_ext_size		IPSET_TOKEN(MTYPE, _ext_size)
+#define mtype_resize_ad		IPSET_TOKEN(MTYPE, _resize_ad)
 #define mtype_head		IPSET_TOKEN(MTYPE, _head)
 #define mtype_list		IPSET_TOKEN(MTYPE, _list)
+#define mtype_gc_do		IPSET_TOKEN(MTYPE, _gc_do)
 #define mtype_gc		IPSET_TOKEN(MTYPE, _gc)
 #define mtype_gc_init		IPSET_TOKEN(MTYPE, _gc_init)
 #define mtype_variant		IPSET_TOKEN(MTYPE, _variant)
@@ -275,8 +315,7 @@ htable_bits(u32 hashsize)
 /* The generic hash structure */
 struct htype {
 	struct htable __rcu *table; /* the hash table */
-	struct timer_list gc;	/* garbage collection when timeout enabled */
-	struct ip_set *set;	/* attached to this ip_set */
+	struct htable_gc gc;	/* gc workqueue */
 	u32 maxelem;		/* max elements in the hash */
 	u32 initval;		/* random jhash init value */
 #ifdef IP_SET_HASH_WITH_MARKMASK
@@ -288,21 +327,33 @@ struct htype {
 #ifdef IP_SET_HASH_WITH_NETMASK
 	u8 netmask;		/* netmask value for subnets to store */
 #endif
+	struct list_head ad;	/* Resize add|del backlist */
 	struct mtype_elem next; /* temporary storage for uadd */
 #ifdef IP_SET_HASH_WITH_NETS
 	struct net_prefixes nets[NLEN]; /* book-keeping of prefixes */
 #endif
 };
 
+/* ADD|DEL entries saved during resize */
+struct mtype_resize_ad {
+	struct list_head list;
+	enum ipset_adt ad;	/* ADD|DEL element */
+	struct mtype_elem d;	/* Element value */
+	struct ip_set_ext ext;	/* Extensions for ADD */
+	struct ip_set_ext mext;	/* Target extensions for ADD */
+	u32 flags;		/* Flags for ADD */
+};
+
 #ifdef IP_SET_HASH_WITH_NETS
 /* Network cidr size book keeping when the hash stores different
  * sized networks. cidr == real cidr + 1 to support /0.
  */
 static void
-mtype_add_cidr(struct htype *h, u8 cidr, u8 n)
+mtype_add_cidr(struct ip_set *set, struct htype *h, u8 cidr, u8 n)
 {
 	int i, j;
 
+	spin_lock_bh(&set->lock);
 	/* Add in increasing prefix order, so larger cidr first */
 	for (i = 0, j = -1; i < NLEN && h->nets[i].cidr[n]; i++) {
 		if (j != -1) {
@@ -311,7 +362,7 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 n)
 			j = i;
 		} else if (h->nets[i].cidr[n] == cidr) {
 			h->nets[CIDR_POS(cidr)].nets[n]++;
-			return;
+			goto unlock;
 		}
 	}
 	if (j != -1) {
@@ -320,24 +371,29 @@ mtype_add_cidr(struct htype *h, u8 cidr, u8 n)
 	}
 	h->nets[i].cidr[n] = cidr;
 	h->nets[CIDR_POS(cidr)].nets[n] = 1;
+unlock:
+	spin_unlock_bh(&set->lock);
 }
 
 static void
-mtype_del_cidr(struct htype *h, u8 cidr, u8 n)
+mtype_del_cidr(struct ip_set *set, struct htype *h, u8 cidr, u8 n)
 {
 	u8 i, j, net_end = NLEN - 1;
 
+	spin_lock_bh(&set->lock);
 	for (i = 0; i < NLEN; i++) {
 		if (h->nets[i].cidr[n] != cidr)
 			continue;
 		h->nets[CIDR_POS(cidr)].nets[n]--;
 		if (h->nets[CIDR_POS(cidr)].nets[n] > 0)
-			return;
+			goto unlock;
 		for (j = i; j < net_end && h->nets[j].cidr[n]; j++)
 			h->nets[j].cidr[n] = h->nets[j + 1].cidr[n];
 		h->nets[j].cidr[n] = 0;
-		return;
+		goto unlock;
 	}
+unlock:
+	spin_unlock_bh(&set->lock);
 }
 #endif
 
@@ -345,7 +401,7 @@ mtype_del_cidr(struct htype *h, u8 cidr, u8 n)
 static size_t
 mtype_ahash_memsize(const struct htype *h, const struct htable *t)
 {
-	return sizeof(*h) + sizeof(*t);
+	return sizeof(*h) + sizeof(*t) + ahash_sizeof_regions(t->htable_bits);
 }
 
 /* Get the ith element from the array block n */
@@ -369,24 +425,29 @@ mtype_flush(struct ip_set *set)
 	struct htype *h = set->data;
 	struct htable *t;
 	struct hbucket *n;
-	u32 i;
-
-	t = ipset_dereference_protected(h->table, set);
-	for (i = 0; i < jhash_size(t->htable_bits); i++) {
-		n = __ipset_dereference_protected(hbucket(t, i), 1);
-		if (!n)
-			continue;
-		if (set->extensions & IPSET_EXT_DESTROY)
-			mtype_ext_cleanup(set, n);
-		/* FIXME: use slab cache */
-		rcu_assign_pointer(hbucket(t, i), NULL);
-		kfree_rcu(n, rcu);
+	u32 r, i;
+
+	t = ipset_dereference_nfnl(h->table);
+	for (r = 0; r < ahash_numof_locks(t->htable_bits); r++) {
+		spin_lock_bh(&t->hregion[r].lock);
+		for (i = ahash_bucket_start(r, t->htable_bits);
+		     i < ahash_bucket_end(r, t->htable_bits); i++) {
+			n = __ipset_dereference(hbucket(t, i));
+			if (!n)
+				continue;
+			if (set->extensions & IPSET_EXT_DESTROY)
+				mtype_ext_cleanup(set, n);
+			/* FIXME: use slab cache */
+			rcu_assign_pointer(hbucket(t, i), NULL);
+			kfree_rcu(n, rcu);
+		}
+		t->hregion[r].ext_size = 0;
+		t->hregion[r].elements = 0;
+		spin_unlock_bh(&t->hregion[r].lock);
 	}
 #ifdef IP_SET_HASH_WITH_NETS
 	memset(h->nets, 0, sizeof(h->nets));
 #endif
-	set->elements = 0;
-	set->ext_size = 0;
 }
 
 /* Destroy the hashtable part of the set */
@@ -397,7 +458,7 @@ mtype_ahash_destroy(struct ip_set *set, struct htable *t, bool ext_destroy)
 	u32 i;
 
 	for (i = 0; i < jhash_size(t->htable_bits); i++) {
-		n = __ipset_dereference_protected(hbucket(t, i), 1);
+		n = __ipset_dereference(hbucket(t, i));
 		if (!n)
 			continue;
 		if (set->extensions & IPSET_EXT_DESTROY && ext_destroy)
@@ -406,6 +467,7 @@ mtype_ahash_destroy(struct ip_set *set, struct htable *t, bool ext_destroy)
 		kfree(n);
 	}
 
+	ip_set_free(t->hregion);
 	ip_set_free(t);
 }
 
@@ -414,28 +476,21 @@ static void
 mtype_destroy(struct ip_set *set)
 {
 	struct htype *h = set->data;
+	struct list_head *l, *lt;
 
 	if (SET_WITH_TIMEOUT(set))
-		del_timer_sync(&h->gc);
+		cancel_delayed_work_sync(&h->gc.dwork);
 
-	mtype_ahash_destroy(set,
-			    __ipset_dereference_protected(h->table, 1), true);
+	mtype_ahash_destroy(set, ipset_dereference_nfnl(h->table), true);
+	list_for_each_safe(l, lt, &h->ad) {
+		list_del(l);
+		kfree(l);
+	}
 	kfree(h);
 
 	set->data = NULL;
 }
 
-static void
-mtype_gc_init(struct ip_set *set, void (*gc)(struct timer_list *t))
-{
-	struct htype *h = set->data;
-
-	timer_setup(&h->gc, gc, 0);
-	mod_timer(&h->gc, jiffies + IPSET_GC_PERIOD(set->timeout) * HZ);
-	pr_debug("gc initialized, run in every %u\n",
-		 IPSET_GC_PERIOD(set->timeout));
-}
-
 static bool
 mtype_same_set(const struct ip_set *a, const struct ip_set *b)
 {
@@ -454,11 +509,9 @@ mtype_same_set(const struct ip_set *a, const struct ip_set *b)
 	       a->extensions == b->extensions;
 }
 
-/* Delete expired elements from the hashtable */
 static void
-mtype_expire(struct ip_set *set, struct htype *h)
+mtype_gc_do(struct ip_set *set, struct htype *h, struct htable *t, u32 r)
 {
-	struct htable *t;
 	struct hbucket *n, *tmp;
 	struct mtype_elem *data;
 	u32 i, j, d;
@@ -466,10 +519,12 @@ mtype_expire(struct ip_set *set, struct htype *h)
 #ifdef IP_SET_HASH_WITH_NETS
 	u8 k;
 #endif
+	u8 htable_bits = t->htable_bits;
 
-	t = ipset_dereference_protected(h->table, set);
-	for (i = 0; i < jhash_size(t->htable_bits); i++) {
-		n = __ipset_dereference_protected(hbucket(t, i), 1);
+	spin_lock_bh(&t->hregion[r].lock);
+	for (i = ahash_bucket_start(r, htable_bits);
+	     i < ahash_bucket_end(r, htable_bits); i++) {
+		n = __ipset_dereference(hbucket(t, i));
 		if (!n)
 			continue;
 		for (j = 0, d = 0; j < n->pos; j++) {
@@ -485,58 +540,100 @@ mtype_expire(struct ip_set *set, struct htype *h)
 			smp_mb__after_atomic();
 #ifdef IP_SET_HASH_WITH_NETS
 			for (k = 0; k < IPSET_NET_COUNT; k++)
-				mtype_del_cidr(h,
+				mtype_del_cidr(set, h,
 					NCIDR_PUT(DCIDR_GET(data->cidr, k)),
 					k);
 #endif
+			t->hregion[r].elements--;
 			ip_set_ext_destroy(set, data);
-			set->elements--;
 			d++;
 		}
 		if (d >= AHASH_INIT_SIZE) {
 			if (d >= n->size) {
+				t->hregion[r].ext_size -=
+					ext_size(n->size, dsize);
 				rcu_assign_pointer(hbucket(t, i), NULL);
 				kfree_rcu(n, rcu);
 				continue;
 			}
 			tmp = kzalloc(sizeof(*tmp) +
-				      (n->size - AHASH_INIT_SIZE) * dsize,
-				      GFP_ATOMIC);
+				(n->size - AHASH_INIT_SIZE) * dsize,
+				GFP_ATOMIC);
 			if (!tmp)
-				/* Still try to delete expired elements */
+				/* Still try to delete expired elements. */
 				continue;
 			tmp->size = n->size - AHASH_INIT_SIZE;
 			for (j = 0, d = 0; j < n->pos; j++) {
 				if (!test_bit(j, n->used))
 					continue;
 				data = ahash_data(n, j, dsize);
-				memcpy(tmp->value + d * dsize, data, dsize);
+				memcpy(tmp->value + d * dsize,
+				       data, dsize);
 				set_bit(d, tmp->used);
 				d++;
 			}
 			tmp->pos = d;
-			set->ext_size -= ext_size(AHASH_INIT_SIZE, dsize);
+			t->hregion[r].ext_size -=
+				ext_size(AHASH_INIT_SIZE, dsize);
 			rcu_assign_pointer(hbucket(t, i), tmp);
 			kfree_rcu(n, rcu);
 		}
 	}
+	spin_unlock_bh(&t->hregion[r].lock);
 }
 
 static void
-mtype_gc(struct timer_list *t)
+mtype_gc(struct work_struct *work)
 {
-	struct htype *h = from_timer(h, t, gc);
-	struct ip_set *set = h->set;
+	struct htable_gc *gc;
+	struct ip_set *set;
+	struct htype *h;
+	struct htable *t;
+	u32 r, numof_locks;
+	unsigned int next_run;
+
+	gc = container_of(work, struct htable_gc, dwork.work);
+	set = gc->set;
+	h = set->data;
 
-	pr_debug("called\n");
 	spin_lock_bh(&set->lock);
-	mtype_expire(set, h);
+	t = ipset_dereference_set(h->table, set);
+	atomic_inc(&t->uref);
+	numof_locks = ahash_numof_locks(t->htable_bits);
+	r = gc->region++;
+	if (r >= numof_locks) {
+		r = gc->region = 0;
+	}
+	next_run = (IPSET_GC_PERIOD(set->timeout) * HZ) / numof_locks;
+	if (next_run < HZ/10)
+		next_run = HZ/10;
 	spin_unlock_bh(&set->lock);
 
-	h->gc.expires = jiffies + IPSET_GC_PERIOD(set->timeout) * HZ;
-	add_timer(&h->gc);
+	mtype_gc_do(set, h, t, r);
+
+	if (atomic_dec_and_test(&t->uref) && atomic_read(&t->ref)) {
+		pr_debug("Table destroy after resize by expire: %p\n", t);
+		mtype_ahash_destroy(set, t, false);
+	}
+
+	queue_delayed_work(system_power_efficient_wq, &gc->dwork, next_run);
+
+}
+
+static void
+mtype_gc_init(struct htable_gc *gc)
+{
+	INIT_DEFERRABLE_WORK(&gc->dwork, mtype_gc);
+	queue_delayed_work(system_power_efficient_wq, &gc->dwork, HZ);
 }
 
+static int
+mtype_add(struct ip_set *set, void *value, const struct ip_set_ext *ext,
+	  struct ip_set_ext *mext, u32 flags);
+static int
+mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
+	  struct ip_set_ext *mext, u32 flags);
+
 /* Resize a hash: create a new hash table with doubling the hashsize
  * and inserting the elements to it. Repeat until we succeed or
  * fail due to memory pressures.
@@ -547,7 +644,7 @@ mtype_resize(struct ip_set *set, bool retried)
 	struct htype *h = set->data;
 	struct htable *t, *orig;
 	u8 htable_bits;
-	size_t extsize, dsize = set->dsize;
+	size_t dsize = set->dsize;
 #ifdef IP_SET_HASH_WITH_NETS
 	u8 flags;
 	struct mtype_elem *tmp;
@@ -555,7 +652,9 @@ mtype_resize(struct ip_set *set, bool retried)
 	struct mtype_elem *data;
 	struct mtype_elem *d;
 	struct hbucket *n, *m;
-	u32 i, j, key;
+	struct list_head *l, *lt;
+	struct mtype_resize_ad *x;
+	u32 i, j, r, nr, key;
 	int ret;
 
 #ifdef IP_SET_HASH_WITH_NETS
@@ -563,10 +662,8 @@ mtype_resize(struct ip_set *set, bool retried)
 	if (!tmp)
 		return -ENOMEM;
 #endif
-	rcu_read_lock_bh();
-	orig = rcu_dereference_bh_nfnl(h->table);
+	orig = ipset_dereference_bh_nfnl(h->table);
 	htable_bits = orig->htable_bits;
-	rcu_read_unlock_bh();
 
 retry:
 	ret = 0;
@@ -583,88 +680,124 @@ retry:
 		ret = -ENOMEM;
 		goto out;
 	}
+	t->hregion = ip_set_alloc(ahash_sizeof_regions(htable_bits));
+	if (!t->hregion) {
+		kfree(t);
+		ret = -ENOMEM;
+		goto out;
+	}
 	t->htable_bits = htable_bits;
+	t->maxelem = h->maxelem / ahash_numof_locks(htable_bits);
+	for (i = 0; i < ahash_numof_locks(htable_bits); i++)
+		spin_lock_init(&t->hregion[i].lock);
 
-	spin_lock_bh(&set->lock);
-	orig = __ipset_dereference_protected(h->table, 1);
-	/* There can't be another parallel resizing, but dumping is possible */
+	/* There can't be another parallel resizing,
+	 * but dumping, gc, kernel side add/del are possible
+	 */
+	orig = ipset_dereference_bh_nfnl(h->table);
 	atomic_set(&orig->ref, 1);
 	atomic_inc(&orig->uref);
-	extsize = 0;
 	pr_debug("attempt to resize set %s from %u to %u, t %p\n",
 		 set->name, orig->htable_bits, htable_bits, orig);
-	for (i = 0; i < jhash_size(orig->htable_bits); i++) {
-		n = __ipset_dereference_protected(hbucket(orig, i), 1);
-		if (!n)
-			continue;
-		for (j = 0; j < n->pos; j++) {
-			if (!test_bit(j, n->used))
+	for (r = 0; r < ahash_numof_locks(orig->htable_bits); r++) {
+		/* Expire may replace a hbucket with another one */
+		rcu_read_lock_bh();
+		for (i = ahash_bucket_start(r, orig->htable_bits);
+		     i < ahash_bucket_end(r, orig->htable_bits); i++) {
+			n = __ipset_dereference(hbucket(orig, i));
+			if (!n)
 				continue;
-			data = ahash_data(n, j, dsize);
+			for (j = 0; j < n->pos; j++) {
+				if (!test_bit(j, n->used))
+					continue;
+				data = ahash_data(n, j, dsize);
+				if (SET_ELEM_EXPIRED(set, data))
+					continue;
 #ifdef IP_SET_HASH_WITH_NETS
-			/* We have readers running parallel with us,
-			 * so the live data cannot be modified.
-			 */
-			flags = 0;
-			memcpy(tmp, data, dsize);
-			data = tmp;
-			mtype_data_reset_flags(data, &flags);
+				/* We have readers running parallel with us,
+				 * so the live data cannot be modified.
+				 */
+				flags = 0;
+				memcpy(tmp, data, dsize);
+				data = tmp;
+				mtype_data_reset_flags(data, &flags);
 #endif
-			key = HKEY(data, h->initval, htable_bits);
-			m = __ipset_dereference_protected(hbucket(t, key), 1);
-			if (!m) {
-				m = kzalloc(sizeof(*m) +
+				key = HKEY(data, h->initval, htable_bits);
+				m = __ipset_dereference(hbucket(t, key));
+				nr = ahash_region(key, htable_bits);
+				if (!m) {
+					m = kzalloc(sizeof(*m) +
 					    AHASH_INIT_SIZE * dsize,
 					    GFP_ATOMIC);
-				if (!m) {
-					ret = -ENOMEM;
-					goto cleanup;
-				}
-				m->size = AHASH_INIT_SIZE;
-				extsize += ext_size(AHASH_INIT_SIZE, dsize);
-				RCU_INIT_POINTER(hbucket(t, key), m);
-			} else if (m->pos >= m->size) {
-				struct hbucket *ht;
-
-				if (m->size >= AHASH_MAX(h)) {
-					ret = -EAGAIN;
-				} else {
-					ht = kzalloc(sizeof(*ht) +
+					if (!m) {
+						ret = -ENOMEM;
+						goto cleanup;
+					}
+					m->size = AHASH_INIT_SIZE;
+					t->hregion[nr].ext_size +=
+						ext_size(AHASH_INIT_SIZE,
+							 dsize);
+					RCU_INIT_POINTER(hbucket(t, key), m);
+				} else if (m->pos >= m->size) {
+					struct hbucket *ht;
+
+					if (m->size >= AHASH_MAX(h)) {
+						ret = -EAGAIN;
+					} else {
+						ht = kzalloc(sizeof(*ht) +
 						(m->size + AHASH_INIT_SIZE)
 						* dsize,
 						GFP_ATOMIC);
-					if (!ht)
-						ret = -ENOMEM;
+						if (!ht)
+							ret = -ENOMEM;
+					}
+					if (ret < 0)
+						goto cleanup;
+					memcpy(ht, m, sizeof(struct hbucket) +
+					       m->size * dsize);
+					ht->size = m->size + AHASH_INIT_SIZE;
+					t->hregion[nr].ext_size +=
+						ext_size(AHASH_INIT_SIZE,
+							 dsize);
+					kfree(m);
+					m = ht;
+					RCU_INIT_POINTER(hbucket(t, key), ht);
 				}
-				if (ret < 0)
-					goto cleanup;
-				memcpy(ht, m, sizeof(struct hbucket) +
-					      m->size * dsize);
-				ht->size = m->size + AHASH_INIT_SIZE;
-				extsize += ext_size(AHASH_INIT_SIZE, dsize);
-				kfree(m);
-				m = ht;
-				RCU_INIT_POINTER(hbucket(t, key), ht);
-			}
-			d = ahash_data(m, m->pos, dsize);
-			memcpy(d, data, dsize);
-			set_bit(m->pos++, m->used);
+				d = ahash_data(m, m->pos, dsize);
+				memcpy(d, data, dsize);
+				set_bit(m->pos++, m->used);
+				t->hregion[nr].elements++;
 #ifdef IP_SET_HASH_WITH_NETS
-			mtype_data_reset_flags(d, &flags);
+				mtype_data_reset_flags(d, &flags);
 #endif
+			}
 		}
+		rcu_read_unlock_bh();
 	}
-	rcu_assign_pointer(h->table, t);
-	set->ext_size = extsize;
 
-	spin_unlock_bh(&set->lock);
+	/* There can't be any other writer. */
+	rcu_assign_pointer(h->table, t);
 
 	/* Give time to other readers of the set */
 	synchronize_rcu();
 
 	pr_debug("set %s resized from %u (%p) to %u (%p)\n", set->name,
 		 orig->htable_bits, orig, t->htable_bits, t);
-	/* If there's nobody else dumping the table, destroy it */
+	/* Add/delete elements processed by the SET target during resize.
+	 * Kernel-side add cannot trigger a resize and userspace actions
+	 * are serialized by the mutex.
+	 */
+	list_for_each_safe(l, lt, &h->ad) {
+		x = list_entry(l, struct mtype_resize_ad, list);
+		if (x->ad == IPSET_ADD) {
+			mtype_add(set, &x->d, &x->ext, &x->mext, x->flags);
+		} else {
+			mtype_del(set, &x->d, NULL, NULL, 0);
+		}
+		list_del(l);
+		kfree(l);
+	}
+	/* If there's nobody else using the table, destroy it */
 	if (atomic_dec_and_test(&orig->uref)) {
 		pr_debug("Table destroy by resize %p\n", orig);
 		mtype_ahash_destroy(set, orig, false);
@@ -677,15 +810,44 @@ out:
 	return ret;
 
 cleanup:
+	rcu_read_unlock_bh();
 	atomic_set(&orig->ref, 0);
 	atomic_dec(&orig->uref);
-	spin_unlock_bh(&set->lock);
 	mtype_ahash_destroy(set, t, false);
 	if (ret == -EAGAIN)
 		goto retry;
 	goto out;
 }
 
+/* Get the current number of elements and ext_size in the set  */
+static void
+mtype_ext_size(struct ip_set *set, u32 *elements, size_t *ext_size)
+{
+	struct htype *h = set->data;
+	const struct htable *t;
+	u32 i, j, r;
+	struct hbucket *n;
+	struct mtype_elem *data;
+
+	t = rcu_dereference_bh(h->table);
+	for (r = 0; r < ahash_numof_locks(t->htable_bits); r++) {
+		for (i = ahash_bucket_start(r, t->htable_bits);
+		     i < ahash_bucket_end(r, t->htable_bits); i++) {
+			n = rcu_dereference_bh(hbucket(t, i));
+			if (!n)
+				continue;
+			for (j = 0; j < n->pos; j++) {
+				if (!test_bit(j, n->used))
+					continue;
+				data = ahash_data(n, j, set->dsize);
+				if (!SET_ELEM_EXPIRED(set, data))
+					(*elements)++;
+			}
+		}
+		*ext_size += t->hregion[r].ext_size;
+	}
+}
+
 /* Add an element to a hash and update the internal counters when succeeded,
  * otherwise report the proper error code.
  */
@@ -698,32 +860,49 @@ mtype_add(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 	const struct mtype_elem *d = value;
 	struct mtype_elem *data;
 	struct hbucket *n, *old = ERR_PTR(-ENOENT);
-	int i, j = -1;
+	int i, j = -1, ret;
 	bool flag_exist = flags & IPSET_FLAG_EXIST;
 	bool deleted = false, forceadd = false, reuse = false;
-	u32 key, multi = 0;
+	u32 r, key, multi = 0, elements, maxelem;
 
-	if (set->elements >= h->maxelem) {
-		if (SET_WITH_TIMEOUT(set))
-			/* FIXME: when set is full, we slow down here */
-			mtype_expire(set, h);
-		if (set->elements >= h->maxelem && SET_WITH_FORCEADD(set))
+	rcu_read_lock_bh();
+	t = rcu_dereference_bh(h->table);
+	key = HKEY(value, h->initval, t->htable_bits);
+	r = ahash_region(key, t->htable_bits);
+	atomic_inc(&t->uref);
+	elements = t->hregion[r].elements;
+	maxelem = t->maxelem;
+	if (elements >= maxelem) {
+		u32 e;
+		if (SET_WITH_TIMEOUT(set)) {
+			rcu_read_unlock_bh();
+			mtype_gc_do(set, h, t, r);
+			rcu_read_lock_bh();
+		}
+		maxelem = h->maxelem;
+		elements = 0;
+		for (e = 0; e < ahash_numof_locks(t->htable_bits); e++)
+			elements += t->hregion[e].elements;
+		if (elements >= maxelem && SET_WITH_FORCEADD(set))
 			forceadd = true;
 	}
+	rcu_read_unlock_bh();
 
-	t = ipset_dereference_protected(h->table, set);
-	key = HKEY(value, h->initval, t->htable_bits);
-	n = __ipset_dereference_protected(hbucket(t, key), 1);
+	spin_lock_bh(&t->hregion[r].lock);
+	n = rcu_dereference_bh(hbucket(t, key));
 	if (!n) {
-		if (forceadd || set->elements >= h->maxelem)
+		if (forceadd || elements >= maxelem)
 			goto set_full;
 		old = NULL;
 		n = kzalloc(sizeof(*n) + AHASH_INIT_SIZE * set->dsize,
 			    GFP_ATOMIC);
-		if (!n)
-			return -ENOMEM;
+		if (!n) {
+			ret = -ENOMEM;
+			goto unlock;
+		}
 		n->size = AHASH_INIT_SIZE;
-		set->ext_size += ext_size(AHASH_INIT_SIZE, set->dsize);
+		t->hregion[r].ext_size +=
+			ext_size(AHASH_INIT_SIZE, set->dsize);
 		goto copy_elem;
 	}
 	for (i = 0; i < n->pos; i++) {
@@ -737,38 +916,37 @@ mtype_add(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 		}
 		data = ahash_data(n, i, set->dsize);
 		if (mtype_data_equal(data, d, &multi)) {
-			if (flag_exist ||
-			    (SET_WITH_TIMEOUT(set) &&
-			     ip_set_timeout_expired(ext_timeout(data, set)))) {
+			if (flag_exist || SET_ELEM_EXPIRED(set, data)) {
 				/* Just the extensions could be overwritten */
 				j = i;
 				goto overwrite_extensions;
 			}
-			return -IPSET_ERR_EXIST;
+			ret = -IPSET_ERR_EXIST;
+			goto unlock;
 		}
 		/* Reuse first timed out entry */
-		if (SET_WITH_TIMEOUT(set) &&
-		    ip_set_timeout_expired(ext_timeout(data, set)) &&
-		    j == -1) {
+		if (SET_ELEM_EXPIRED(set, data) && j == -1) {
 			j = i;
 			reuse = true;
 		}
 	}
 	if (reuse || forceadd) {
+		if (j == -1)
+			j = 0;
 		data = ahash_data(n, j, set->dsize);
 		if (!deleted) {
 #ifdef IP_SET_HASH_WITH_NETS
 			for (i = 0; i < IPSET_NET_COUNT; i++)
-				mtype_del_cidr(h,
+				mtype_del_cidr(set, h,
 					NCIDR_PUT(DCIDR_GET(data->cidr, i)),
 					i);
 #endif
 			ip_set_ext_destroy(set, data);
-			set->elements--;
+			t->hregion[r].elements--;
 		}
 		goto copy_data;
 	}
-	if (set->elements >= h->maxelem)
+	if (elements >= maxelem)
 		goto set_full;
 	/* Create a new slot */
 	if (n->pos >= n->size) {
@@ -776,28 +954,32 @@ mtype_add(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 		if (n->size >= AHASH_MAX(h)) {
 			/* Trigger rehashing */
 			mtype_data_next(&h->next, d);
-			return -EAGAIN;
+			ret = -EAGAIN;
+			goto resize;
 		}
 		old = n;
 		n = kzalloc(sizeof(*n) +
 			    (old->size + AHASH_INIT_SIZE) * set->dsize,
 			    GFP_ATOMIC);
-		if (!n)
-			return -ENOMEM;
+		if (!n) {
+			ret = -ENOMEM;
+			goto unlock;
+		}
 		memcpy(n, old, sizeof(struct hbucket) +
 		       old->size * set->dsize);
 		n->size = old->size + AHASH_INIT_SIZE;
-		set->ext_size += ext_size(AHASH_INIT_SIZE, set->dsize);
+		t->hregion[r].ext_size +=
+			ext_size(AHASH_INIT_SIZE, set->dsize);
 	}
 
 copy_elem:
 	j = n->pos++;
 	data = ahash_data(n, j, set->dsize);
 copy_data:
-	set->elements++;
+	t->hregion[r].elements++;
 #ifdef IP_SET_HASH_WITH_NETS
 	for (i = 0; i < IPSET_NET_COUNT; i++)
-		mtype_add_cidr(h, NCIDR_PUT(DCIDR_GET(d->cidr, i)), i);
+		mtype_add_cidr(set, h, NCIDR_PUT(DCIDR_GET(d->cidr, i)), i);
 #endif
 	memcpy(data, d, sizeof(struct mtype_elem));
 overwrite_extensions:
@@ -820,13 +1002,41 @@ overwrite_extensions:
 		if (old)
 			kfree_rcu(old, rcu);
 	}
+	ret = 0;
+resize:
+	spin_unlock_bh(&t->hregion[r].lock);
+	if (atomic_read(&t->ref) && ext->target) {
+		/* Resize is in process and kernel side add, save values */
+		struct mtype_resize_ad *x;
+
+		x = kzalloc(sizeof(struct mtype_resize_ad), GFP_ATOMIC);
+		if (!x)
+			/* Don't bother */
+			goto out;
+		x->ad = IPSET_ADD;
+		memcpy(&x->d, value, sizeof(struct mtype_elem));
+		memcpy(&x->ext, ext, sizeof(struct ip_set_ext));
+		memcpy(&x->mext, mext, sizeof(struct ip_set_ext));
+		x->flags = flags;
+		spin_lock_bh(&set->lock);
+		list_add_tail(&x->list, &h->ad);
+		spin_unlock_bh(&set->lock);
+	}
+	goto out;
 
-	return 0;
 set_full:
 	if (net_ratelimit())
 		pr_warn("Set %s is full, maxelem %u reached\n",
-			set->name, h->maxelem);
-	return -IPSET_ERR_HASH_FULL;
+			set->name, maxelem);
+	ret = -IPSET_ERR_HASH_FULL;
+unlock:
+	spin_unlock_bh(&t->hregion[r].lock);
+out:
+	if (atomic_dec_and_test(&t->uref) && atomic_read(&t->ref)) {
+		pr_debug("Table destroy after resize by add: %p\n", t);
+		mtype_ahash_destroy(set, t, false);
+	}
+	return ret;
 }
 
 /* Delete an element from the hash and free up space if possible.
@@ -840,13 +1050,23 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 	const struct mtype_elem *d = value;
 	struct mtype_elem *data;
 	struct hbucket *n;
-	int i, j, k, ret = -IPSET_ERR_EXIST;
+	struct mtype_resize_ad *x = NULL;
+	int i, j, k, r, ret = -IPSET_ERR_EXIST;
 	u32 key, multi = 0;
 	size_t dsize = set->dsize;
 
-	t = ipset_dereference_protected(h->table, set);
+	/* Userspace add and resize is excluded by the mutex.
+	 * Kernespace add does not trigger resize.
+	 */
+	rcu_read_lock_bh();
+	t = rcu_dereference_bh(h->table);
 	key = HKEY(value, h->initval, t->htable_bits);
-	n = __ipset_dereference_protected(hbucket(t, key), 1);
+	r = ahash_region(key, t->htable_bits);
+	atomic_inc(&t->uref);
+	rcu_read_unlock_bh();
+
+	spin_lock_bh(&t->hregion[r].lock);
+	n = rcu_dereference_bh(hbucket(t, key));
 	if (!n)
 		goto out;
 	for (i = 0, k = 0; i < n->pos; i++) {
@@ -857,8 +1077,7 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 		data = ahash_data(n, i, dsize);
 		if (!mtype_data_equal(data, d, &multi))
 			continue;
-		if (SET_WITH_TIMEOUT(set) &&
-		    ip_set_timeout_expired(ext_timeout(data, set)))
+		if (SET_ELEM_EXPIRED(set, data))
 			goto out;
 
 		ret = 0;
@@ -866,20 +1085,33 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 		smp_mb__after_atomic();
 		if (i + 1 == n->pos)
 			n->pos--;
-		set->elements--;
+		t->hregion[r].elements--;
 #ifdef IP_SET_HASH_WITH_NETS
 		for (j = 0; j < IPSET_NET_COUNT; j++)
-			mtype_del_cidr(h, NCIDR_PUT(DCIDR_GET(d->cidr, j)),
-				       j);
+			mtype_del_cidr(set, h,
+				       NCIDR_PUT(DCIDR_GET(d->cidr, j)), j);
 #endif
 		ip_set_ext_destroy(set, data);
 
+		if (atomic_read(&t->ref) && ext->target) {
+			/* Resize is in process and kernel side del,
+			 * save values
+			 */
+			x = kzalloc(sizeof(struct mtype_resize_ad),
+				    GFP_ATOMIC);
+			if (x) {
+				x->ad = IPSET_DEL;
+				memcpy(&x->d, value,
+				       sizeof(struct mtype_elem));
+				x->flags = flags;
+			}
+		}
 		for (; i < n->pos; i++) {
 			if (!test_bit(i, n->used))
 				k++;
 		}
 		if (n->pos == 0 && k == 0) {
-			set->ext_size -= ext_size(n->size, dsize);
+			t->hregion[r].ext_size -= ext_size(n->size, dsize);
 			rcu_assign_pointer(hbucket(t, key), NULL);
 			kfree_rcu(n, rcu);
 		} else if (k >= AHASH_INIT_SIZE) {
@@ -898,7 +1130,8 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 				k++;
 			}
 			tmp->pos = k;
-			set->ext_size -= ext_size(AHASH_INIT_SIZE, dsize);
+			t->hregion[r].ext_size -=
+				ext_size(AHASH_INIT_SIZE, dsize);
 			rcu_assign_pointer(hbucket(t, key), tmp);
 			kfree_rcu(n, rcu);
 		}
@@ -906,6 +1139,16 @@ mtype_del(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 	}
 
 out:
+	spin_unlock_bh(&t->hregion[r].lock);
+	if (x) {
+		spin_lock_bh(&set->lock);
+		list_add(&x->list, &h->ad);
+		spin_unlock_bh(&set->lock);
+	}
+	if (atomic_dec_and_test(&t->uref) && atomic_read(&t->ref)) {
+		pr_debug("Table destroy after resize by del: %p\n", t);
+		mtype_ahash_destroy(set, t, false);
+	}
 	return ret;
 }
 
@@ -991,6 +1234,7 @@ mtype_test(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 	int i, ret = 0;
 	u32 key, multi = 0;
 
+	rcu_read_lock_bh();
 	t = rcu_dereference_bh(h->table);
 #ifdef IP_SET_HASH_WITH_NETS
 	/* If we test an IP address and not a network address,
@@ -1022,6 +1266,7 @@ mtype_test(struct ip_set *set, void *value, const struct ip_set_ext *ext,
 			goto out;
 	}
 out:
+	rcu_read_unlock_bh();
 	return ret;
 }
 
@@ -1033,23 +1278,14 @@ mtype_head(struct ip_set *set, struct sk_buff *skb)
 	const struct htable *t;
 	struct nlattr *nested;
 	size_t memsize;
+	u32 elements = 0;
+	size_t ext_size = 0;
 	u8 htable_bits;
 
-	/* If any members have expired, set->elements will be wrong
-	 * mytype_expire function will update it with the right count.
-	 * we do not hold set->lock here, so grab it first.
-	 * set->elements can still be incorrect in the case of a huge set,
-	 * because elements might time out during the listing.
-	 */
-	if (SET_WITH_TIMEOUT(set)) {
-		spin_lock_bh(&set->lock);
-		mtype_expire(set, h);
-		spin_unlock_bh(&set->lock);
-	}
-
 	rcu_read_lock_bh();
-	t = rcu_dereference_bh_nfnl(h->table);
-	memsize = mtype_ahash_memsize(h, t) + set->ext_size;
+	t = rcu_dereference_bh(h->table);
+	mtype_ext_size(set, &elements, &ext_size);
+	memsize = mtype_ahash_memsize(h, t) + ext_size + set->ext_size;
 	htable_bits = t->htable_bits;
 	rcu_read_unlock_bh();
 
@@ -1071,7 +1307,7 @@ mtype_head(struct ip_set *set, struct sk_buff *skb)
 #endif
 	if (nla_put_net32(skb, IPSET_ATTR_REFERENCES, htonl(set->ref)) ||
 	    nla_put_net32(skb, IPSET_ATTR_MEMSIZE, htonl(memsize)) ||
-	    nla_put_net32(skb, IPSET_ATTR_ELEMENTS, htonl(set->elements)))
+	    nla_put_net32(skb, IPSET_ATTR_ELEMENTS, htonl(elements)))
 		goto nla_put_failure;
 	if (unlikely(ip_set_put_flags(skb, set)))
 		goto nla_put_failure;
@@ -1091,15 +1327,15 @@ mtype_uref(struct ip_set *set, struct netlink_callback *cb, bool start)
 
 	if (start) {
 		rcu_read_lock_bh();
-		t = rcu_dereference_bh_nfnl(h->table);
+		t = ipset_dereference_bh_nfnl(h->table);
 		atomic_inc(&t->uref);
 		cb->args[IPSET_CB_PRIVATE] = (unsigned long)t;
 		rcu_read_unlock_bh();
 	} else if (cb->args[IPSET_CB_PRIVATE]) {
 		t = (struct htable *)cb->args[IPSET_CB_PRIVATE];
 		if (atomic_dec_and_test(&t->uref) && atomic_read(&t->ref)) {
-			/* Resizing didn't destroy the hash table */
-			pr_debug("Table destroy by dump: %p\n", t);
+			pr_debug("Table destroy after resize "
+				 " by dump: %p\n", t);
 			mtype_ahash_destroy(set, t, false);
 		}
 		cb->args[IPSET_CB_PRIVATE] = 0;
@@ -1141,8 +1377,7 @@ mtype_list(const struct ip_set *set,
 			if (!test_bit(i, n->used))
 				continue;
 			e = ahash_data(n, i, set->dsize);
-			if (SET_WITH_TIMEOUT(set) &&
-			    ip_set_timeout_expired(ext_timeout(e, set)))
+			if (SET_ELEM_EXPIRED(set, e))
 				continue;
 			pr_debug("list hash %lu hbucket %p i %u, data %p\n",
 				 cb->args[IPSET_CB_ARG0], n, i, e);
@@ -1208,6 +1443,7 @@ static const struct ip_set_type_variant mtype_variant = {
 	.uref	= mtype_uref,
 	.resize	= mtype_resize,
 	.same_set = mtype_same_set,
+	.region_lock = true,
 };
 
 #ifdef IP_SET_EMIT_CREATE
@@ -1226,6 +1462,7 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
 	size_t hsize;
 	struct htype *h;
 	struct htable *t;
+	u32 i;
 
 	pr_debug("Create set %s with family %s\n",
 		 set->name, set->family == NFPROTO_IPV4 ? "inet" : "inet6");
@@ -1294,6 +1531,15 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
 		kfree(h);
 		return -ENOMEM;
 	}
+	t->hregion = ip_set_alloc(ahash_sizeof_regions(hbits));
+	if (!t->hregion) {
+		kfree(t);
+		kfree(h);
+		return -ENOMEM;
+	}
+	h->gc.set = set;
+	for (i = 0; i < ahash_numof_locks(hbits); i++)
+		spin_lock_init(&t->hregion[i].lock);
 	h->maxelem = maxelem;
 #ifdef IP_SET_HASH_WITH_NETMASK
 	h->netmask = netmask;
@@ -1304,9 +1550,10 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
 	get_random_bytes(&h->initval, sizeof(h->initval));
 
 	t->htable_bits = hbits;
+	t->maxelem = h->maxelem / ahash_numof_locks(hbits);
 	RCU_INIT_POINTER(h->table, t);
 
-	h->set = set;
+	INIT_LIST_HEAD(&h->ad);
 	set->data = h;
 #ifndef IP_SET_PROTO_UNDEF
 	if (set->family == NFPROTO_IPV4) {
@@ -1329,12 +1576,10 @@ IPSET_TOKEN(HTYPE, _create)(struct net *net, struct ip_set *set,
 #ifndef IP_SET_PROTO_UNDEF
 		if (set->family == NFPROTO_IPV4)
 #endif
-			IPSET_TOKEN(HTYPE, 4_gc_init)(set,
-				IPSET_TOKEN(HTYPE, 4_gc));
+			IPSET_TOKEN(HTYPE, 4_gc_init)(&h->gc);
 #ifndef IP_SET_PROTO_UNDEF
 		else
-			IPSET_TOKEN(HTYPE, 6_gc_init)(set,
-				IPSET_TOKEN(HTYPE, 6_gc));
+			IPSET_TOKEN(HTYPE, 6_gc_init)(&h->gc);
 #endif
 	}
 	pr_debug("create %s hashsize %u (%u) maxelem %u: %p(%p)\n",
diff --git a/net/netfilter/nft_set_pipapo.c b/net/netfilter/nft_set_pipapo.c
index feac8553f6d9..4fc0c924ed5d 100644
--- a/net/netfilter/nft_set_pipapo.c
+++ b/net/netfilter/nft_set_pipapo.c
@@ -1766,11 +1766,13 @@ static bool pipapo_match_field(struct nft_pipapo_field *f,
 static void nft_pipapo_remove(const struct net *net, const struct nft_set *set,
 			      const struct nft_set_elem *elem)
 {
-	const u8 *data = (const u8 *)elem->key.val.data;
 	struct nft_pipapo *priv = nft_set_priv(set);
 	struct nft_pipapo_match *m = priv->clone;
+	struct nft_pipapo_elem *e = elem->priv;
 	int rules_f0, first_rule = 0;
-	struct nft_pipapo_elem *e;
+	const u8 *data;
+
+	data = (const u8 *)nft_set_ext_key(&e->ext);
 
 	e = pipapo_get(net, set, data, 0);
 	if (IS_ERR(e))
diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 7a2c4b8408c4..8c835ad63729 100644
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -402,15 +402,6 @@ static void htable_remove_proc_entry(struct xt_hashlimit_htable *hinfo)
 		remove_proc_entry(hinfo->name, parent);
 }
 
-static void htable_destroy(struct xt_hashlimit_htable *hinfo)
-{
-	cancel_delayed_work_sync(&hinfo->gc_work);
-	htable_remove_proc_entry(hinfo);
-	htable_selective_cleanup(hinfo, true);
-	kfree(hinfo->name);
-	vfree(hinfo);
-}
-
 static struct xt_hashlimit_htable *htable_find_get(struct net *net,
 						   const char *name,
 						   u_int8_t family)
@@ -432,8 +423,13 @@ static void htable_put(struct xt_hashlimit_htable *hinfo)
 {
 	if (refcount_dec_and_mutex_lock(&hinfo->use, &hashlimit_mutex)) {
 		hlist_del(&hinfo->node);
+		htable_remove_proc_entry(hinfo);
 		mutex_unlock(&hashlimit_mutex);
-		htable_destroy(hinfo);
+
+		cancel_delayed_work_sync(&hinfo->gc_work);
+		htable_selective_cleanup(hinfo, true);
+		kfree(hinfo->name);
+		vfree(hinfo);
 	}
 }
 
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c
index 0522b2b1fd95..9f357aa22b94 100644
--- a/net/netlink/genetlink.c
+++ b/net/netlink/genetlink.c
@@ -497,8 +497,9 @@ genl_family_rcv_msg_attrs_parse(const struct genl_family *family,
 
 	err = __nlmsg_parse(nlh, hdrlen, attrbuf, family->maxattr,
 			    family->policy, validate, extack);
-	if (err && parallel) {
-		kfree(attrbuf);
+	if (err) {
+		if (parallel)
+			kfree(attrbuf);
 		return ERR_PTR(err);
 	}
 	return attrbuf;
diff --git a/net/sched/act_api.c b/net/sched/act_api.c
index 90a31b15585f..8c466a712cda 100644
--- a/net/sched/act_api.c
+++ b/net/sched/act_api.c
@@ -186,6 +186,7 @@ static size_t tcf_action_shared_attrs_size(const struct tc_action *act)
 		+ nla_total_size(IFNAMSIZ) /* TCA_ACT_KIND */
 		+ cookie_len /* TCA_ACT_COOKIE */
 		+ nla_total_size(0) /* TCA_ACT_STATS nested */
+		+ nla_total_size(sizeof(struct nla_bitfield32)) /* TCA_ACT_FLAGS */
 		/* TCA_STATS_BASIC */
 		+ nla_total_size_64bit(sizeof(struct gnet_stats_basic))
 		/* TCA_STATS_PKT64 */
diff --git a/net/smc/af_smc.c b/net/smc/af_smc.c
index 90988a511cd5..6fd44bdb0fc3 100644
--- a/net/smc/af_smc.c
+++ b/net/smc/af_smc.c
@@ -512,15 +512,18 @@ static int smc_connect_decline_fallback(struct smc_sock *smc, int reason_code)
 static int smc_connect_abort(struct smc_sock *smc, int reason_code,
 			     int local_contact)
 {
+	bool is_smcd = smc->conn.lgr->is_smcd;
+
 	if (local_contact == SMC_FIRST_CONTACT)
-		smc_lgr_forget(smc->conn.lgr);
-	if (smc->conn.lgr->is_smcd)
+		smc_lgr_cleanup_early(&smc->conn);
+	else
+		smc_conn_free(&smc->conn);
+	if (is_smcd)
 		/* there is only one lgr role for SMC-D; use server lock */
 		mutex_unlock(&smc_server_lgr_pending);
 	else
 		mutex_unlock(&smc_client_lgr_pending);
 
-	smc_conn_free(&smc->conn);
 	smc->connect_nonblock = 0;
 	return reason_code;
 }
@@ -1091,7 +1094,6 @@ static void smc_listen_out_err(struct smc_sock *new_smc)
 	if (newsmcsk->sk_state == SMC_INIT)
 		sock_put(&new_smc->sk); /* passive closing */
 	newsmcsk->sk_state = SMC_CLOSED;
-	smc_conn_free(&new_smc->conn);
 
 	smc_listen_out(new_smc);
 }
@@ -1102,12 +1104,13 @@ static void smc_listen_decline(struct smc_sock *new_smc, int reason_code,
 {
 	/* RDMA setup failed, switch back to TCP */
 	if (local_contact == SMC_FIRST_CONTACT)
-		smc_lgr_forget(new_smc->conn.lgr);
+		smc_lgr_cleanup_early(&new_smc->conn);
+	else
+		smc_conn_free(&new_smc->conn);
 	if (reason_code < 0) { /* error, no fallback possible */
 		smc_listen_out_err(new_smc);
 		return;
 	}
-	smc_conn_free(&new_smc->conn);
 	smc_switch_to_fallback(new_smc);
 	new_smc->fallback_rsn = reason_code;
 	if (reason_code && reason_code != SMC_CLC_DECL_PEERDECL) {
@@ -1170,16 +1173,18 @@ static int smc_listen_ism_init(struct smc_sock *new_smc,
 			    new_smc->conn.lgr->vlan_id,
 			    new_smc->conn.lgr->smcd)) {
 		if (ini->cln_first_contact == SMC_FIRST_CONTACT)
-			smc_lgr_forget(new_smc->conn.lgr);
-		smc_conn_free(&new_smc->conn);
+			smc_lgr_cleanup_early(&new_smc->conn);
+		else
+			smc_conn_free(&new_smc->conn);
 		return SMC_CLC_DECL_SMCDNOTALK;
 	}
 
 	/* Create send and receive buffers */
 	if (smc_buf_create(new_smc, true)) {
 		if (ini->cln_first_contact == SMC_FIRST_CONTACT)
-			smc_lgr_forget(new_smc->conn.lgr);
-		smc_conn_free(&new_smc->conn);
+			smc_lgr_cleanup_early(&new_smc->conn);
+		else
+			smc_conn_free(&new_smc->conn);
 		return SMC_CLC_DECL_MEM;
 	}
 
diff --git a/net/smc/smc_core.c b/net/smc/smc_core.c
index 2249de5379ee..5b085efa3bce 100644
--- a/net/smc/smc_core.c
+++ b/net/smc/smc_core.c
@@ -162,6 +162,18 @@ static void smc_lgr_unregister_conn(struct smc_connection *conn)
 	conn->lgr = NULL;
 }
 
+void smc_lgr_cleanup_early(struct smc_connection *conn)
+{
+	struct smc_link_group *lgr = conn->lgr;
+
+	if (!lgr)
+		return;
+
+	smc_conn_free(conn);
+	smc_lgr_forget(lgr);
+	smc_lgr_schedule_free_work_fast(lgr);
+}
+
 /* Send delete link, either as client to request the initiation
  * of the DELETE LINK sequence from server; or as server to
  * initiate the delete processing. See smc_llc_rx_delete_link().
diff --git a/net/smc/smc_core.h b/net/smc/smc_core.h
index c472e12951d1..234ae25f0025 100644
--- a/net/smc/smc_core.h
+++ b/net/smc/smc_core.h
@@ -296,6 +296,7 @@ struct smc_clc_msg_accept_confirm;
 struct smc_clc_msg_local;
 
 void smc_lgr_forget(struct smc_link_group *lgr);
+void smc_lgr_cleanup_early(struct smc_connection *conn);
 void smc_lgr_terminate(struct smc_link_group *lgr, bool soft);
 void smc_port_terminate(struct smc_ib_device *smcibdev, u8 ibport);
 void smc_smcd_terminate(struct smcd_dev *dev, u64 peer_gid,
@@ -316,7 +317,6 @@ int smc_vlan_by_tcpsk(struct socket *clcsock, struct smc_init_info *ini);
 
 void smc_conn_free(struct smc_connection *conn);
 int smc_conn_create(struct smc_sock *smc, struct smc_init_info *ini);
-void smcd_conn_free(struct smc_connection *conn);
 void smc_lgr_schedule_free_work_fast(struct smc_link_group *lgr);
 int smc_core_init(void);
 void smc_core_exit(void);
diff --git a/net/smc/smc_ib.c b/net/smc/smc_ib.c
index 548632621f4b..d6ba186f67e2 100644
--- a/net/smc/smc_ib.c
+++ b/net/smc/smc_ib.c
@@ -573,6 +573,8 @@ static void smc_ib_remove_dev(struct ib_device *ibdev, void *client_data)
 	struct smc_ib_device *smcibdev;
 
 	smcibdev = ib_get_client_data(ibdev, &smc_ib_client);
+	if (!smcibdev || smcibdev->ibdev != ibdev)
+		return;
 	ib_set_client_data(ibdev, &smc_ib_client, NULL);
 	spin_lock(&smc_ib_devices.lock);
 	list_del_init(&smcibdev->list); /* remove from smc_ib_devices */
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 62c12cb5763e..68debcb28fa4 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -682,6 +682,7 @@ static int unix_set_peek_off(struct sock *sk, int val)
 	return 0;
 }
 
+#ifdef CONFIG_PROC_FS
 static void unix_show_fdinfo(struct seq_file *m, struct socket *sock)
 {
 	struct sock *sk = sock->sk;
@@ -692,6 +693,9 @@ static void unix_show_fdinfo(struct seq_file *m, struct socket *sock)
 		seq_printf(m, "scm_fds: %u\n", READ_ONCE(u->scm_stat.nr_fds));
 	}
 }
+#else
+#define unix_show_fdinfo NULL
+#endif
 
 static const struct proto_ops unix_stream_ops = {
 	.family =	PF_UNIX,
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 9c5b2a91baad..a5f28708e0e7 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -451,6 +451,12 @@ int vsock_assign_transport(struct vsock_sock *vsk, struct vsock_sock *psk)
 		if (vsk->transport == new_transport)
 			return 0;
 
+		/* transport->release() must be called with sock lock acquired.
+		 * This path can only be taken during vsock_stream_connect(),
+		 * where we have already held the sock lock.
+		 * In the other cases, this function is called on a new socket
+		 * which is not assigned to any transport.
+		 */
 		vsk->transport->release(vsk);
 		vsock_deassign_transport(vsk);
 	}
@@ -753,20 +759,18 @@ static void __vsock_release(struct sock *sk, int level)
 		vsk = vsock_sk(sk);
 		pending = NULL;	/* Compiler warning. */
 
-		/* The release call is supposed to use lock_sock_nested()
-		 * rather than lock_sock(), if a sock lock should be acquired.
-		 */
-		if (vsk->transport)
-			vsk->transport->release(vsk);
-		else if (sk->sk_type == SOCK_STREAM)
-			vsock_remove_sock(vsk);
-
 		/* When "level" is SINGLE_DEPTH_NESTING, use the nested
 		 * version to avoid the warning "possible recursive locking
 		 * detected". When "level" is 0, lock_sock_nested(sk, level)
 		 * is the same as lock_sock(sk).
 		 */
 		lock_sock_nested(sk, level);
+
+		if (vsk->transport)
+			vsk->transport->release(vsk);
+		else if (sk->sk_type == SOCK_STREAM)
+			vsock_remove_sock(vsk);
+
 		sock_orphan(sk);
 		sk->sk_shutdown = SHUTDOWN_MASK;
 
diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c
index 3492c021925f..630b851f8150 100644
--- a/net/vmw_vsock/hyperv_transport.c
+++ b/net/vmw_vsock/hyperv_transport.c
@@ -526,12 +526,9 @@ static bool hvs_close_lock_held(struct vsock_sock *vsk)
 
 static void hvs_release(struct vsock_sock *vsk)
 {
-	struct sock *sk = sk_vsock(vsk);
 	bool remove_sock;
 
-	lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
 	remove_sock = hvs_close_lock_held(vsk);
-	release_sock(sk);
 	if (remove_sock)
 		vsock_remove_sock(vsk);
 }
diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index d9f0c9c5425a..f3c4bab2f737 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -829,7 +829,6 @@ void virtio_transport_release(struct vsock_sock *vsk)
 	struct sock *sk = &vsk->sk;
 	bool remove_sock = true;
 
-	lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
 	if (sk->sk_type == SOCK_STREAM)
 		remove_sock = virtio_transport_close(vsk);
 
@@ -837,7 +836,6 @@ void virtio_transport_release(struct vsock_sock *vsk)
 		list_del(&pkt->list);
 		virtio_transport_free_pkt(pkt);
 	}
-	release_sock(sk);
 
 	if (remove_sock)
 		vsock_remove_sock(vsk);
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index cedf17d4933f..5b19e9fac4aa 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -20,6 +20,7 @@
 #include <linux/netlink.h>
 #include <linux/nospec.h>
 #include <linux/etherdevice.h>
+#include <linux/if_vlan.h>
 #include <net/net_namespace.h>
 #include <net/genetlink.h>
 #include <net/cfg80211.h>
@@ -4800,8 +4801,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 		err = nl80211_parse_he_obss_pd(
 					info->attrs[NL80211_ATTR_HE_OBSS_PD],
 					&params.he_obss_pd);
-		if (err)
-			return err;
+		goto out;
 	}
 
 	nl80211_calculate_ap_params(&params);
@@ -4823,6 +4823,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
 	}
 	wdev_unlock(wdev);
 
+out:
 	kfree(params.acl);
 
 	return err;
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index fff9a74891fc..1a8218f1bbe0 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -2276,7 +2276,7 @@ static void handle_channel_custom(struct wiphy *wiphy,
 			break;
 	}
 
-	if (IS_ERR(reg_rule)) {
+	if (IS_ERR_OR_NULL(reg_rule)) {
 		pr_debug("Disabling freq %d MHz as custom regd has no rule that fits it\n",
 			 chan->center_freq);
 		if (wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) {