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

Conflicts:

drivers/net/ethernet/broadcom/bnxt/bnxt_ptp.h
  9e26680733d5 ("bnxt_en: Update firmware call to retrieve TX PTP timestamp")
  9e518f25802c ("bnxt_en: 1PPS functions to configure TSIO pins")
  099fdeda659d ("bnxt_en: Event handler for PPS events")

kernel/bpf/helpers.c
include/linux/bpf-cgroup.h
  a2baf4e8bb0f ("bpf: Fix potentially incorrect results with bpf_get_local_storage()")
  c7603cfa04e7 ("bpf: Add ambient BPF runtime context stored in current")

drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
  5957cc557dc5 ("net/mlx5: Set all field of mlx5_irq before inserting it to the xarray")
  2d0b41a37679 ("net/mlx5: Refcount mlx5_irq with integer")

MAINTAINERS
  7b637cd52f02 ("MAINTAINERS: fix Microchip CAN BUS Analyzer Tool entry typo")
  7d901a1e878a ("net: phy: add Maxlinear GPY115/21x/24x driver")

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

39 files changed, 244 insertions, 130 deletions

diff --git a/net/bpf/test_run.c b/net/bpf/test_run.c
index 335e1d8c17f8..4b855af267b1 100644
--- a/net/bpf/test_run.c
+++ b/net/bpf/test_run.c
@@ -7,6 +7,7 @@
 #include <linux/vmalloc.h>
 #include <linux/etherdevice.h>
 #include <linux/filter.h>
+#include <linux/rcupdate_trace.h>
 #include <linux/sched/signal.h>
 #include <net/bpf_sk_storage.h>
 #include <net/sock.h>
@@ -1044,7 +1045,10 @@ int bpf_prog_test_run_syscall(struct bpf_prog *prog,
 			goto out;
 		}
 	}
+
+	rcu_read_lock_trace();
 	retval = bpf_prog_run_pin_on_cpu(prog, ctx);
+	rcu_read_unlock_trace();
 
 	if (copy_to_user(&uattr->test.retval, &retval, sizeof(u32))) {
 		err = -EFAULT;
diff --git a/net/bridge/br.c b/net/bridge/br.c
index c8ae823aa8e7..d3a32c6813e0 100644
--- a/net/bridge/br.c
+++ b/net/bridge/br.c
@@ -166,8 +166,7 @@ static int br_switchdev_event(struct notifier_block *unused,
 	case SWITCHDEV_FDB_ADD_TO_BRIDGE:
 		fdb_info = ptr;
 		err = br_fdb_external_learn_add(br, p, fdb_info->addr,
-						fdb_info->vid,
-						fdb_info->is_local, false);
+						fdb_info->vid, false);
 		if (err) {
 			err = notifier_from_errno(err);
 			break;
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index ddd09f5994a7..46812b659710 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -1036,10 +1036,7 @@ static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge *br,
 					   "FDB entry towards bridge must be permanent");
 			return -EINVAL;
 		}
-
-		err = br_fdb_external_learn_add(br, p, addr, vid,
-						ndm->ndm_state & NUD_PERMANENT,
-						true);
+		err = br_fdb_external_learn_add(br, p, addr, vid, true);
 	} else {
 		spin_lock_bh(&br->hash_lock);
 		err = fdb_add_entry(br, p, addr, ndm, nlh_flags, vid, nfea_tb);
@@ -1267,7 +1264,7 @@ void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p)
 }
 
 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
-			      const unsigned char *addr, u16 vid, bool is_local,
+			      const unsigned char *addr, u16 vid,
 			      bool swdev_notify)
 {
 	struct net_bridge_fdb_entry *fdb;
@@ -1285,7 +1282,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 		if (swdev_notify)
 			flags |= BIT(BR_FDB_ADDED_BY_USER);
 
-		if (is_local)
+		if (!p)
 			flags |= BIT(BR_FDB_LOCAL);
 
 		fdb = fdb_create(br, p, addr, vid, flags);
@@ -1314,7 +1311,7 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
 		if (swdev_notify)
 			set_bit(BR_FDB_ADDED_BY_USER, &fdb->flags);
 
-		if (is_local)
+		if (!p)
 			set_bit(BR_FDB_LOCAL, &fdb->flags);
 
 		if (modified)
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index 67c60240b713..4a02f8bb278a 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -614,6 +614,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev,
 
 	err = dev_set_allmulti(dev, 1);
 	if (err) {
+		br_multicast_del_port(p);
 		kfree(p);	/* kobject not yet init'd, manually free */
 		goto err1;
 	}
@@ -722,6 +723,7 @@ err4:
 err3:
 	sysfs_remove_link(br->ifobj, p->dev->name);
 err2:
+	br_multicast_del_port(p);
 	kobject_put(&p->kobj);
 	dev_set_allmulti(dev, -1);
 err1:
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 32c218aa3f36..c4a8fee990c9 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -770,7 +770,7 @@ int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev,
 int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p);
 void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p);
 int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
-			      const unsigned char *addr, u16 vid, bool is_local,
+			      const unsigned char *addr, u16 vid,
 			      bool swdev_notify);
 int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 			      const unsigned char *addr, u16 vid,
diff --git a/net/bridge/netfilter/nf_conntrack_bridge.c b/net/bridge/netfilter/nf_conntrack_bridge.c
index 8d033a75a766..fdbed3158555 100644
--- a/net/bridge/netfilter/nf_conntrack_bridge.c
+++ b/net/bridge/netfilter/nf_conntrack_bridge.c
@@ -88,6 +88,12 @@ static int nf_br_ip_fragment(struct net *net, struct sock *sk,
 
 			skb = ip_fraglist_next(&iter);
 		}
+
+		if (!err)
+			return 0;
+
+		kfree_skb_list(iter.frag);
+
 		return err;
 	}
 slow_path:
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
index 75431ca9300f..1a455847da54 100644
--- a/net/core/link_watch.c
+++ b/net/core/link_watch.c
@@ -158,7 +158,7 @@ static void linkwatch_do_dev(struct net_device *dev)
 	clear_bit(__LINK_STATE_LINKWATCH_PENDING, &dev->state);
 
 	rfc2863_policy(dev);
-	if (dev->flags & IFF_UP && netif_device_present(dev)) {
+	if (dev->flags & IFF_UP) {
 		if (netif_carrier_ok(dev))
 			dev_activate(dev);
 		else
@@ -204,7 +204,8 @@ static void __linkwatch_run_queue(int urgent_only)
 		dev = list_first_entry(&wrk, struct net_device, link_watch_list);
 		list_del_init(&dev->link_watch_list);
 
-		if (urgent_only && !linkwatch_urgent_event(dev)) {
+		if (!netif_device_present(dev) ||
+		    (urgent_only && !linkwatch_urgent_event(dev))) {
 			list_add_tail(&dev->link_watch_list, &lweventlist);
 			continue;
 		}
diff --git a/net/core/page_pool.c b/net/core/page_pool.c
index ac116041b35f..e1409056965a 100644
--- a/net/core/page_pool.c
+++ b/net/core/page_pool.c
@@ -739,7 +739,15 @@ bool page_pool_return_skb_page(struct page *page)
 	struct page_pool *pp;
 
 	page = compound_head(page);
-	if (unlikely(page->pp_magic != PP_SIGNATURE))
+
+	/* page->pp_magic is OR'ed with PP_SIGNATURE after the allocation
+	 * in order to preserve any existing bits, such as bit 0 for the
+	 * head page of compound page and bit 1 for pfmemalloc page, so
+	 * mask those bits for freeing side when doing below checking,
+	 * and page_is_pfmemalloc() is checked in __page_pool_put_page()
+	 * to avoid recycling the pfmemalloc page.
+	 */
+	if (unlikely((page->pp_magic & ~0x3UL) != PP_SIGNATURE))
 		return false;
 
 	pp = page->pp;
diff --git a/net/dccp/dccp.h b/net/dccp/dccp.h
index 9cc9d1ee6cdb..c5c1d2b8045e 100644
--- a/net/dccp/dccp.h
+++ b/net/dccp/dccp.h
@@ -41,9 +41,9 @@ extern bool dccp_debug;
 #define dccp_pr_debug_cat(format, a...)   DCCP_PRINTK(dccp_debug, format, ##a)
 #define dccp_debug(fmt, a...)		  dccp_pr_debug_cat(KERN_DEBUG fmt, ##a)
 #else
-#define dccp_pr_debug(format, a...)
-#define dccp_pr_debug_cat(format, a...)
-#define dccp_debug(format, a...)
+#define dccp_pr_debug(format, a...)	  do {} while (0)
+#define dccp_pr_debug_cat(format, a...)	  do {} while (0)
+#define dccp_debug(format, a...)	  do {} while (0)
 #endif
 
 extern struct inet_hashinfo dccp_hashinfo;
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index acf73db5cafc..eb9d9e53c536 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -2281,8 +2281,8 @@ static int dsa_slave_netdevice_event(struct notifier_block *nb,
 static void
 dsa_fdb_offload_notify(struct dsa_switchdev_event_work *switchdev_work)
 {
+	struct switchdev_notifier_fdb_info info = {};
 	struct dsa_switch *ds = switchdev_work->ds;
-	struct switchdev_notifier_fdb_info info;
 	struct dsa_port *dp;
 
 	if (!dsa_is_user_port(ds, switchdev_work->port))
diff --git a/net/ieee802154/socket.c b/net/ieee802154/socket.c
index 90233efa1f6b..7bb9ef35c570 100644
--- a/net/ieee802154/socket.c
+++ b/net/ieee802154/socket.c
@@ -983,6 +983,11 @@ static const struct proto_ops ieee802154_dgram_ops = {
 	.sendpage	   = sock_no_sendpage,
 };
 
+static void ieee802154_sock_destruct(struct sock *sk)
+{
+	skb_queue_purge(&sk->sk_receive_queue);
+}
+
 /* Create a socket. Initialise the socket, blank the addresses
  * set the state.
  */
@@ -1023,7 +1028,7 @@ static int ieee802154_create(struct net *net, struct socket *sock,
 	sock->ops = ops;
 
 	sock_init_data(sock, sk);
-	/* FIXME: sk->sk_destruct */
+	sk->sk_destruct = ieee802154_sock_destruct;
 	sk->sk_family = PF_IEEE802154;
 
 	/* Checksums on by default */
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 7e5072722f05..d2e2b3d18c66 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -803,10 +803,17 @@ static void igmp_gq_timer_expire(struct timer_list *t)
 static void igmp_ifc_timer_expire(struct timer_list *t)
 {
 	struct in_device *in_dev = from_timer(in_dev, t, mr_ifc_timer);
+	u32 mr_ifc_count;
 
 	igmpv3_send_cr(in_dev);
-	if (in_dev->mr_ifc_count) {
-		in_dev->mr_ifc_count--;
+restart:
+	mr_ifc_count = READ_ONCE(in_dev->mr_ifc_count);
+
+	if (mr_ifc_count) {
+		if (cmpxchg(&in_dev->mr_ifc_count,
+			    mr_ifc_count,
+			    mr_ifc_count - 1) != mr_ifc_count)
+			goto restart;
 		igmp_ifc_start_timer(in_dev,
 				     unsolicited_report_interval(in_dev));
 	}
@@ -818,7 +825,7 @@ static void igmp_ifc_event(struct in_device *in_dev)
 	struct net *net = dev_net(in_dev->dev);
 	if (IGMP_V1_SEEN(in_dev) || IGMP_V2_SEEN(in_dev))
 		return;
-	in_dev->mr_ifc_count = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;
+	WRITE_ONCE(in_dev->mr_ifc_count, in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv);
 	igmp_ifc_start_timer(in_dev, 1);
 }
 
@@ -957,7 +964,7 @@ static bool igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb,
 				in_dev->mr_qri;
 		}
 		/* cancel the interface change timer */
-		in_dev->mr_ifc_count = 0;
+		WRITE_ONCE(in_dev->mr_ifc_count, 0);
 		if (del_timer(&in_dev->mr_ifc_timer))
 			__in_dev_put(in_dev);
 		/* clear deleted report items */
@@ -1724,7 +1731,7 @@ void ip_mc_down(struct in_device *in_dev)
 		igmp_group_dropped(pmc);
 
 #ifdef CONFIG_IP_MULTICAST
-	in_dev->mr_ifc_count = 0;
+	WRITE_ONCE(in_dev->mr_ifc_count, 0);
 	if (del_timer(&in_dev->mr_ifc_timer))
 		__in_dev_put(in_dev);
 	in_dev->mr_gq_running = 0;
@@ -1941,7 +1948,7 @@ static int ip_mc_del_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 		pmc->sfmode = MCAST_INCLUDE;
 #ifdef CONFIG_IP_MULTICAST
 		pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;
-		in_dev->mr_ifc_count = pmc->crcount;
+		WRITE_ONCE(in_dev->mr_ifc_count, pmc->crcount);
 		for (psf = pmc->sources; psf; psf = psf->sf_next)
 			psf->sf_crcount = 0;
 		igmp_ifc_event(pmc->interface);
@@ -2120,7 +2127,7 @@ static int ip_mc_add_src(struct in_device *in_dev, __be32 *pmca, int sfmode,
 		/* else no filters; keep old mode for reports */
 
 		pmc->crcount = in_dev->mr_qrv ?: net->ipv4.sysctl_igmp_qrv;
-		in_dev->mr_ifc_count = pmc->crcount;
+		WRITE_ONCE(in_dev->mr_ifc_count, pmc->crcount);
 		for (psf = pmc->sources; psf; psf = psf->sf_next)
 			psf->sf_crcount = 0;
 		igmp_ifc_event(in_dev);
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index 6ea3dc2e4219..6274462b86b4 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -1041,7 +1041,7 @@ static void bbr_init(struct sock *sk)
 	bbr->prior_cwnd = 0;
 	tp->snd_ssthresh = TCP_INFINITE_SSTHRESH;
 	bbr->rtt_cnt = 0;
-	bbr->next_rtt_delivered = 0;
+	bbr->next_rtt_delivered = tp->delivered;
 	bbr->prev_ca_state = TCP_CA_Open;
 	bbr->packet_conservation = 0;
 
diff --git a/net/netfilter/ipset/ip_set_hash_ip.c b/net/netfilter/ipset/ip_set_hash_ip.c
index d1bef23fd4f5..dd30c03d5a23 100644
--- a/net/netfilter/ipset/ip_set_hash_ip.c
+++ b/net/netfilter/ipset/ip_set_hash_ip.c
@@ -132,8 +132,11 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[],
 		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
 		if (ret)
 			return ret;
-		if (ip > ip_to)
+		if (ip > ip_to) {
+			if (ip_to == 0)
+				return -IPSET_ERR_HASH_ELEM;
 			swap(ip, ip_to);
+		}
 	} else if (tb[IPSET_ATTR_CIDR]) {
 		u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
 
@@ -144,6 +147,10 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[],
 
 	hosts = h->netmask == 32 ? 1 : 2 << (32 - h->netmask - 1);
 
+	/* 64bit division is not allowed on 32bit */
+	if (((u64)ip_to - ip + 1) >> (32 - h->netmask) > IPSET_MAX_RANGE)
+		return -ERANGE;
+
 	if (retried) {
 		ip = ntohl(h->next.ip);
 		e.ip = htonl(ip);
diff --git a/net/netfilter/ipset/ip_set_hash_ipmark.c b/net/netfilter/ipset/ip_set_hash_ipmark.c
index 18346d18aa16..153de3457423 100644
--- a/net/netfilter/ipset/ip_set_hash_ipmark.c
+++ b/net/netfilter/ipset/ip_set_hash_ipmark.c
@@ -121,6 +121,8 @@ hash_ipmark4_uadt(struct ip_set *set, struct nlattr *tb[],
 
 	e.mark = ntohl(nla_get_be32(tb[IPSET_ATTR_MARK]));
 	e.mark &= h->markmask;
+	if (e.mark == 0 && e.ip == 0)
+		return -IPSET_ERR_HASH_ELEM;
 
 	if (adt == IPSET_TEST ||
 	    !(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_CIDR])) {
@@ -133,8 +135,11 @@ hash_ipmark4_uadt(struct ip_set *set, struct nlattr *tb[],
 		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP_TO], &ip_to);
 		if (ret)
 			return ret;
-		if (ip > ip_to)
+		if (ip > ip_to) {
+			if (e.mark == 0 && ip_to == 0)
+				return -IPSET_ERR_HASH_ELEM;
 			swap(ip, ip_to);
+		}
 	} else if (tb[IPSET_ATTR_CIDR]) {
 		u8 cidr = nla_get_u8(tb[IPSET_ATTR_CIDR]);
 
@@ -143,6 +148,9 @@ hash_ipmark4_uadt(struct ip_set *set, struct nlattr *tb[],
 		ip_set_mask_from_to(ip, ip_to, cidr);
 	}
 
+	if (((u64)ip_to - ip + 1) > IPSET_MAX_RANGE)
+		return -ERANGE;
+
 	if (retried)
 		ip = ntohl(h->next.ip);
 	for (; ip <= ip_to; ip++) {
diff --git a/net/netfilter/ipset/ip_set_hash_ipport.c b/net/netfilter/ipset/ip_set_hash_ipport.c
index e1ca11196515..7303138e46be 100644
--- a/net/netfilter/ipset/ip_set_hash_ipport.c
+++ b/net/netfilter/ipset/ip_set_hash_ipport.c
@@ -173,6 +173,9 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
 			swap(port, port_to);
 	}
 
+	if (((u64)ip_to - ip + 1)*(port_to - port + 1) > IPSET_MAX_RANGE)
+		return -ERANGE;
+
 	if (retried)
 		ip = ntohl(h->next.ip);
 	for (; ip <= ip_to; ip++) {
diff --git a/net/netfilter/ipset/ip_set_hash_ipportip.c b/net/netfilter/ipset/ip_set_hash_ipportip.c
index ab179e064597..334fb1ad0e86 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportip.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportip.c
@@ -180,6 +180,9 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
 			swap(port, port_to);
 	}
 
+	if (((u64)ip_to - ip + 1)*(port_to - port + 1) > IPSET_MAX_RANGE)
+		return -ERANGE;
+
 	if (retried)
 		ip = ntohl(h->next.ip);
 	for (; ip <= ip_to; ip++) {
diff --git a/net/netfilter/ipset/ip_set_hash_ipportnet.c b/net/netfilter/ipset/ip_set_hash_ipportnet.c
index 8f075b44cf64..7df94f437f60 100644
--- a/net/netfilter/ipset/ip_set_hash_ipportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_ipportnet.c
@@ -253,6 +253,9 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 			swap(port, port_to);
 	}
 
+	if (((u64)ip_to - ip + 1)*(port_to - port + 1) > IPSET_MAX_RANGE)
+		return -ERANGE;
+
 	ip2_to = ip2_from;
 	if (tb[IPSET_ATTR_IP2_TO]) {
 		ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP2_TO], &ip2_to);
diff --git a/net/netfilter/ipset/ip_set_hash_net.c b/net/netfilter/ipset/ip_set_hash_net.c
index c1a11f041ac6..1422739d9aa2 100644
--- a/net/netfilter/ipset/ip_set_hash_net.c
+++ b/net/netfilter/ipset/ip_set_hash_net.c
@@ -140,7 +140,7 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_net4_elem e = { .cidr = HOST_MASK };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
-	u32 ip = 0, ip_to = 0;
+	u32 ip = 0, ip_to = 0, ipn, n = 0;
 	int ret;
 
 	if (tb[IPSET_ATTR_LINENO])
@@ -188,6 +188,15 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
 		if (ip + UINT_MAX == ip_to)
 			return -IPSET_ERR_HASH_RANGE;
 	}
+	ipn = ip;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip_to, &e.cidr);
+		n++;
+	} while (ipn++ < ip_to);
+
+	if (n > IPSET_MAX_RANGE)
+		return -ERANGE;
+
 	if (retried)
 		ip = ntohl(h->next.ip);
 	do {
diff --git a/net/netfilter/ipset/ip_set_hash_netiface.c b/net/netfilter/ipset/ip_set_hash_netiface.c
index ddd51c2e1cb3..9810f5bf63f5 100644
--- a/net/netfilter/ipset/ip_set_hash_netiface.c
+++ b/net/netfilter/ipset/ip_set_hash_netiface.c
@@ -202,7 +202,7 @@ hash_netiface4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_netiface4_elem e = { .cidr = HOST_MASK, .elem = 1 };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
-	u32 ip = 0, ip_to = 0;
+	u32 ip = 0, ip_to = 0, ipn, n = 0;
 	int ret;
 
 	if (tb[IPSET_ATTR_LINENO])
@@ -256,6 +256,14 @@ hash_netiface4_uadt(struct ip_set *set, struct nlattr *tb[],
 	} else {
 		ip_set_mask_from_to(ip, ip_to, e.cidr);
 	}
+	ipn = ip;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip_to, &e.cidr);
+		n++;
+	} while (ipn++ < ip_to);
+
+	if (n > IPSET_MAX_RANGE)
+		return -ERANGE;
 
 	if (retried)
 		ip = ntohl(h->next.ip);
diff --git a/net/netfilter/ipset/ip_set_hash_netnet.c b/net/netfilter/ipset/ip_set_hash_netnet.c
index 6532f0505e66..3d09eefe998a 100644
--- a/net/netfilter/ipset/ip_set_hash_netnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netnet.c
@@ -168,7 +168,8 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct hash_netnet4_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	u32 ip = 0, ip_to = 0;
-	u32 ip2 = 0, ip2_from = 0, ip2_to = 0;
+	u32 ip2 = 0, ip2_from = 0, ip2_to = 0, ipn;
+	u64 n = 0, m = 0;
 	int ret;
 
 	if (tb[IPSET_ATTR_LINENO])
@@ -244,6 +245,19 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	} else {
 		ip_set_mask_from_to(ip2_from, ip2_to, e.cidr[1]);
 	}
+	ipn = ip;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip_to, &e.cidr[0]);
+		n++;
+	} while (ipn++ < ip_to);
+	ipn = ip2_from;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip2_to, &e.cidr[1]);
+		m++;
+	} while (ipn++ < ip2_to);
+
+	if (n*m > IPSET_MAX_RANGE)
+		return -ERANGE;
 
 	if (retried) {
 		ip = ntohl(h->next.ip[0]);
diff --git a/net/netfilter/ipset/ip_set_hash_netport.c b/net/netfilter/ipset/ip_set_hash_netport.c
index ec1564a1cb5a..09cf72eb37f8 100644
--- a/net/netfilter/ipset/ip_set_hash_netport.c
+++ b/net/netfilter/ipset/ip_set_hash_netport.c
@@ -158,7 +158,8 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_netport4_elem e = { .cidr = HOST_MASK - 1 };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
-	u32 port, port_to, p = 0, ip = 0, ip_to = 0;
+	u32 port, port_to, p = 0, ip = 0, ip_to = 0, ipn;
+	u64 n = 0;
 	bool with_ports = false;
 	u8 cidr;
 	int ret;
@@ -235,6 +236,14 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
 	} else {
 		ip_set_mask_from_to(ip, ip_to, e.cidr + 1);
 	}
+	ipn = ip;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip_to, &cidr);
+		n++;
+	} while (ipn++ < ip_to);
+
+	if (n*(port_to - port + 1) > IPSET_MAX_RANGE)
+		return -ERANGE;
 
 	if (retried) {
 		ip = ntohl(h->next.ip);
diff --git a/net/netfilter/ipset/ip_set_hash_netportnet.c b/net/netfilter/ipset/ip_set_hash_netportnet.c
index 0e91d1e82f1c..19bcdb3141f6 100644
--- a/net/netfilter/ipset/ip_set_hash_netportnet.c
+++ b/net/netfilter/ipset/ip_set_hash_netportnet.c
@@ -182,7 +182,8 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct hash_netportnet4_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	u32 ip = 0, ip_to = 0, p = 0, port, port_to;
-	u32 ip2_from = 0, ip2_to = 0, ip2;
+	u32 ip2_from = 0, ip2_to = 0, ip2, ipn;
+	u64 n = 0, m = 0;
 	bool with_ports = false;
 	int ret;
 
@@ -284,6 +285,19 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	} else {
 		ip_set_mask_from_to(ip2_from, ip2_to, e.cidr[1]);
 	}
+	ipn = ip;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip_to, &e.cidr[0]);
+		n++;
+	} while (ipn++ < ip_to);
+	ipn = ip2_from;
+	do {
+		ipn = ip_set_range_to_cidr(ipn, ip2_to, &e.cidr[1]);
+		m++;
+	} while (ipn++ < ip2_to);
+
+	if (n*m*(port_to - port + 1) > IPSET_MAX_RANGE)
+		return -ERANGE;
 
 	if (retried) {
 		ip = ntohl(h->next.ip[0]);
diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
index 5c03e5106751..d31dbccbe7bd 100644
--- a/net/netfilter/nf_conntrack_core.c
+++ b/net/netfilter/nf_conntrack_core.c
@@ -66,22 +66,17 @@ EXPORT_SYMBOL_GPL(nf_conntrack_hash);
 
 struct conntrack_gc_work {
 	struct delayed_work	dwork;
-	u32			last_bucket;
+	u32			next_bucket;
 	bool			exiting;
 	bool			early_drop;
-	long			next_gc_run;
 };
 
 static __read_mostly struct kmem_cache *nf_conntrack_cachep;
 static DEFINE_SPINLOCK(nf_conntrack_locks_all_lock);
 static __read_mostly bool nf_conntrack_locks_all;
 
-/* every gc cycle scans at most 1/GC_MAX_BUCKETS_DIV part of table */
-#define GC_MAX_BUCKETS_DIV	128u
-/* upper bound of full table scan */
-#define GC_MAX_SCAN_JIFFIES	(16u * HZ)
-/* desired ratio of entries found to be expired */
-#define GC_EVICT_RATIO	50u
+#define GC_SCAN_INTERVAL	(120u * HZ)
+#define GC_SCAN_MAX_DURATION	msecs_to_jiffies(10)
 
 static struct conntrack_gc_work conntrack_gc_work;
 
@@ -1363,17 +1358,13 @@ static bool gc_worker_can_early_drop(const struct nf_conn *ct)
 
 static void gc_worker(struct work_struct *work)
 {
-	unsigned int min_interval = max(HZ / GC_MAX_BUCKETS_DIV, 1u);
-	unsigned int i, goal, buckets = 0, expired_count = 0;
-	unsigned int nf_conntrack_max95 = 0;
+	unsigned long end_time = jiffies + GC_SCAN_MAX_DURATION;
+	unsigned int i, hashsz, nf_conntrack_max95 = 0;
+	unsigned long next_run = GC_SCAN_INTERVAL;
 	struct conntrack_gc_work *gc_work;
-	unsigned int ratio, scanned = 0;
-	unsigned long next_run;
-
 	gc_work = container_of(work, struct conntrack_gc_work, dwork.work);
 
-	goal = nf_conntrack_htable_size / GC_MAX_BUCKETS_DIV;
-	i = gc_work->last_bucket;
+	i = gc_work->next_bucket;
 	if (gc_work->early_drop)
 		nf_conntrack_max95 = nf_conntrack_max / 100u * 95u;
 
@@ -1381,15 +1372,15 @@ static void gc_worker(struct work_struct *work)
 		struct nf_conntrack_tuple_hash *h;
 		struct hlist_nulls_head *ct_hash;
 		struct hlist_nulls_node *n;
-		unsigned int hashsz;
 		struct nf_conn *tmp;
 
-		i++;
 		rcu_read_lock();
 
 		nf_conntrack_get_ht(&ct_hash, &hashsz);
-		if (i >= hashsz)
-			i = 0;
+		if (i >= hashsz) {
+			rcu_read_unlock();
+			break;
+		}
 
 		hlist_nulls_for_each_entry_rcu(h, n, &ct_hash[i], hnnode) {
 			struct nf_conntrack_net *cnet;
@@ -1397,7 +1388,6 @@ static void gc_worker(struct work_struct *work)