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

Pull networking fixes from David Miller:
 "Several smallish fixes, I don't think any of this requires another -rc
  but I'll leave that up to you:

   1) Don't leak uninitialzed bytes to userspace in xfrm_user, from Eric
      Dumazet.

   2) Route leak in xfrm_lookup_route(), from Tommi Rantala.

   3) Premature poll() returns in AF_XDP, from Björn Töpel.

   4) devlink leak in netdevsim, from Jakub Kicinski.

   5) Don't BUG_ON in fib_compute_spec_dst, the condition can
      legitimately happen. From Lorenzo Bianconi.

   6) Fix some spectre v1 gadgets in generic socket code, from Jeremy
      Cline.

   7) Don't allow user to bind to out of range multicast groups, from
      Dmitry Safonov with a follow-up by Dmitry Safonov.

   8) Fix metrics leak in fib6_drop_pcpu_from(), from Sabrina Dubroca"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
  netlink: Don't shift with UB on nlk->ngroups
  net/ipv6: fix metrics leak
  xen-netfront: wait xenbus state change when load module manually
  can: ems_usb: Fix memory leak on ems_usb_disconnect()
  openvswitch: meter: Fix setting meter id for new entries
  netlink: Do not subscribe to non-existent groups
  NET: stmmac: align DMA stuff to largest cache line length
  tcp_bbr: fix bw probing to raise in-flight data for very small BDPs
  net: socket: Fix potential spectre v1 gadget in sock_is_registered
  net: socket: fix potential spectre v1 gadget in socketcall
  net: mdio-mux: bcm-iproc: fix wrong getter and setter pair
  ipv4: remove BUG_ON() from fib_compute_spec_dst
  enic: handle mtu change for vf properly
  net: lan78xx: fix rx handling before first packet is send
  nfp: flower: fix port metadata conversion bug
  bpf: use GFP_ATOMIC instead of GFP_KERNEL in bpf_parse_prog()
  bpf: fix bpf_skb_load_bytes_relative pkt length check
  perf build: Build error in libbpf missing initialization
  net: ena: Fix use of uninitialized DMA address bits field
  bpf: btf: Use exact btf value_size match in map_check_btf()
  ...

23 files changed, 127 insertions, 62 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index a5aa1c7444e6..559a91271f82 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -7149,16 +7149,19 @@ int dev_change_tx_queue_len(struct net_device *dev, unsigned long new_len)
 		dev->tx_queue_len = new_len;
 		res = call_netdevice_notifiers(NETDEV_CHANGE_TX_QUEUE_LEN, dev);
 		res = notifier_to_errno(res);
-		if (res) {
-			netdev_err(dev,
-				   "refused to change device tx_queue_len\n");
-			dev->tx_queue_len = orig_len;
-			return res;
-		}
-		return dev_qdisc_change_tx_queue_len(dev);
+		if (res)
+			goto err_rollback;
+		res = dev_qdisc_change_tx_queue_len(dev);
+		if (res)
+			goto err_rollback;
 	}
 
 	return 0;
+
+err_rollback:
+	netdev_err(dev, "refused to change device tx_queue_len\n");
+	dev->tx_queue_len = orig_len;
+	return res;
 }
 
 /**
diff --git a/net/core/filter.c b/net/core/filter.c
index 06da770f543f..9dfd145eedcc 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -1712,24 +1712,26 @@ static const struct bpf_func_proto bpf_skb_load_bytes_proto = {
 BPF_CALL_5(bpf_skb_load_bytes_relative, const struct sk_buff *, skb,
 	   u32, offset, void *, to, u32, len, u32, start_header)
 {
+	u8 *end = skb_tail_pointer(skb);
+	u8 *net = skb_network_header(skb);
+	u8 *mac = skb_mac_header(skb);
 	u8 *ptr;
 
-	if (unlikely(offset > 0xffff || len > skb_headlen(skb)))
+	if (unlikely(offset > 0xffff || len > (end - mac)))
 		goto err_clear;
 
 	switch (start_header) {
 	case BPF_HDR_START_MAC:
-		ptr = skb_mac_header(skb) + offset;
+		ptr = mac + offset;
 		break;
 	case BPF_HDR_START_NET:
-		ptr = skb_network_header(skb) + offset;
+		ptr = net + offset;
 		break;
 	default:
 		goto err_clear;
 	}
 
-	if (likely(ptr >= skb_mac_header(skb) &&
-		   ptr + len <= skb_tail_pointer(skb))) {
+	if (likely(ptr >= mac && ptr + len <= end)) {
 		memcpy(to, ptr, len);
 		return 0;
 	}
diff --git a/net/core/lwt_bpf.c b/net/core/lwt_bpf.c
index e7e626fb87bb..e45098593dc0 100644
--- a/net/core/lwt_bpf.c
+++ b/net/core/lwt_bpf.c
@@ -217,7 +217,7 @@ static int bpf_parse_prog(struct nlattr *attr, struct bpf_lwt_prog *prog,
 	if (!tb[LWT_BPF_PROG_FD] || !tb[LWT_BPF_PROG_NAME])
 		return -EINVAL;
 
-	prog->name = nla_memdup(tb[LWT_BPF_PROG_NAME], GFP_KERNEL);
+	prog->name = nla_memdup(tb[LWT_BPF_PROG_NAME], GFP_ATOMIC);
 	if (!prog->name)
 		return -ENOMEM;
 
diff --git a/net/core/xdp.c b/net/core/xdp.c
index 9d1f22072d5d..6771f1855b96 100644
--- a/net/core/xdp.c
+++ b/net/core/xdp.c
@@ -345,7 +345,8 @@ static void __xdp_return(void *data, struct xdp_mem_info *mem, bool napi_direct,
 		rcu_read_lock();
 		/* mem->id is valid, checked in xdp_rxq_info_reg_mem_model() */
 		xa = rhashtable_lookup(mem_id_ht, &mem->id, mem_id_rht_params);
-		xa->zc_alloc->free(xa->zc_alloc, handle);
+		if (!WARN_ON_ONCE(!xa))
+			xa->zc_alloc->free(xa->zc_alloc, handle);
 		rcu_read_unlock();
 	default:
 		/* Not possible, checked in xdp_rxq_info_reg_mem_model() */
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index e46cdd310e5f..2998b0e47d4b 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -292,19 +292,19 @@ __be32 fib_compute_spec_dst(struct sk_buff *skb)
 		return ip_hdr(skb)->daddr;
 
 	in_dev = __in_dev_get_rcu(dev);
-	BUG_ON(!in_dev);
 
 	net = dev_net(dev);
 
 	scope = RT_SCOPE_UNIVERSE;
 	if (!ipv4_is_zeronet(ip_hdr(skb)->saddr)) {
+		bool vmark = in_dev && IN_DEV_SRC_VMARK(in_dev);
 		struct flowi4 fl4 = {
 			.flowi4_iif = LOOPBACK_IFINDEX,
 			.flowi4_oif = l3mdev_master_ifindex_rcu(dev),
 			.daddr = ip_hdr(skb)->saddr,
 			.flowi4_tos = RT_TOS(ip_hdr(skb)->tos),
 			.flowi4_scope = scope,
-			.flowi4_mark = IN_DEV_SRC_VMARK(in_dev) ? skb->mark : 0,
+			.flowi4_mark = vmark ? skb->mark : 0,
 		};
 		if (!fib_lookup(net, &fl4, &res, 0))
 			return FIB_RES_PREFSRC(net, res);
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 28fef7d15959..75151be21413 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1387,7 +1387,8 @@ static void ip_mc_hash_remove(struct in_device *in_dev,
 /*
  *	A socket has joined a multicast group on device dev.
  */
-void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr, unsigned int mode)
+static void __ip_mc_inc_group(struct in_device *in_dev, __be32 addr,
+			      unsigned int mode)
 {
 	struct ip_mc_list *im;
 #ifdef CONFIG_IP_MULTICAST
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index 58e2f479ffb4..4bfff3c87e8e 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -354,6 +354,10 @@ static u32 bbr_target_cwnd(struct sock *sk, u32 bw, int gain)
 	/* Reduce delayed ACKs by rounding up cwnd to the next even number. */
 	cwnd = (cwnd + 1) & ~1U;
 
+	/* Ensure gain cycling gets inflight above BDP even for small BDPs. */
+	if (bbr->mode == BBR_PROBE_BW && gain > BBR_UNIT)
+		cwnd += 2;
+
 	return cwnd;
 }
 
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 3bcd30a2ba06..f9dcb29be12d 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -246,8 +246,15 @@ static void tcp_ecn_queue_cwr(struct tcp_sock *tp)
 
 static void tcp_ecn_accept_cwr(struct tcp_sock *tp, const struct sk_buff *skb)
 {
-	if (tcp_hdr(skb)->cwr)
+	if (tcp_hdr(skb)->cwr) {
 		tp->ecn_flags &= ~TCP_ECN_DEMAND_CWR;
+
+		/* If the sender is telling us it has entered CWR, then its
+		 * cwnd may be very low (even just 1 packet), so we should ACK
+		 * immediately.
+		 */
+		tcp_enter_quickack_mode((struct sock *)tp, 2);
+	}
 }
 
 static void tcp_ecn_withdraw_cwr(struct tcp_sock *tp)
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 97513f35bcc5..88a7579c23bd 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -669,8 +669,10 @@ skip_cow:
 
 	sg_init_table(sg, nfrags);
 	ret = skb_to_sgvec(skb, sg, 0, skb->len);
-	if (unlikely(ret < 0))
+	if (unlikely(ret < 0)) {
+		kfree(tmp);
 		goto out;
+	}
 
 	skb->ip_summed = CHECKSUM_NONE;
 
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index d212738e9d10..211a2d437b56 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -167,11 +167,22 @@ struct fib6_info *fib6_info_alloc(gfp_t gfp_flags)
 	return f6i;
 }
 
+static void fib6_metrics_release(struct fib6_info *f6i)
+{
+	struct dst_metrics *m;
+
+	if (!f6i)
+		return;
+
+	m = f6i->fib6_metrics;
+	if (m != &dst_default_metrics && refcount_dec_and_test(&m->refcnt))
+		kfree(m);
+}
+
 void fib6_info_destroy_rcu(struct rcu_head *head)
 {
 	struct fib6_info *f6i = container_of(head, struct fib6_info, rcu);
 	struct rt6_exception_bucket *bucket;
-	struct dst_metrics *m;
 
 	WARN_ON(f6i->fib6_node);
 
@@ -201,9 +212,7 @@ void fib6_info_destroy_rcu(struct rcu_head *head)
 	if (f6i->fib6_nh.nh_dev)
 		dev_put(f6i->fib6_nh.nh_dev);
 
-	m = f6i->fib6_metrics;
-	if (m != &dst_default_metrics && refcount_dec_and_test(&m->refcnt))
-		kfree(m);
+	fib6_metrics_release(f6i);
 
 	kfree(f6i);
 }
@@ -887,6 +896,7 @@ static void fib6_drop_pcpu_from(struct fib6_info *f6i,
 
 			from = rcu_dereference_protected(pcpu_rt->from,
 					     lockdep_is_held(&table->tb6_lock));
+			fib6_metrics_release(from);
 			rcu_assign_pointer(pcpu_rt->from, NULL);
 			fib6_info_release(from);
 		}
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index b7f28deddaea..c72ae3a4fe09 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -480,10 +480,6 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
 		goto tx_err_dst_release;
 	}
 
-	skb_scrub_packet(skb, !net_eq(t->net, dev_net(dev)));
-	skb_dst_set(skb, dst);
-	skb->dev = skb_dst(skb)->dev;
-
 	mtu = dst_mtu(dst);
 	if (!skb->ignore_df && skb->len > mtu) {
 		skb_dst_update_pmtu(skb, mtu);
@@ -498,9 +494,14 @@ vti6_xmit(struct sk_buff *skb, struct net_device *dev, struct flowi *fl)
 				  htonl(mtu));
 		}
 
-		return -EMSGSIZE;
+		err = -EMSGSIZE;
+		goto tx_err_dst_release;
 	}
 
+	skb_scrub_packet(skb, !net_eq(t->net, dev_net(dev)));
+	skb_dst_set(skb, dst);
+	skb->dev = skb_dst(skb)->dev;
+
 	err = dst_output(t->net, skb->sk, skb);
 	if (net_xmit_eval(err) == 0) {
 		struct pcpu_sw_netstats *tstats = this_cpu_ptr(dev->tstats);
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 393573a99a5a..7d860a22e5fb 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1009,6 +1009,11 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr,
 			return err;
 	}
 
+	if (nlk->ngroups == 0)
+		groups = 0;
+	else
+		groups &= (1ULL << nlk->ngroups) - 1;
+
 	bound = nlk->bound;
 	if (bound) {
 		/* Ensure nlk->portid is up-to-date. */
diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index b891a91577f8..c038e021a591 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -211,6 +211,7 @@ static struct dp_meter *dp_meter_create(struct nlattr **a)
 	if (!meter)
 		return ERR_PTR(-ENOMEM);
 
+	meter->id = nla_get_u32(a[OVS_METER_ATTR_ID]);
 	meter->used = div_u64(ktime_get_ns(), 1000 * 1000);
 	meter->kbps = a[OVS_METER_ATTR_KBPS] ? 1 : 0;
 	meter->keep_stats = !a[OVS_METER_ATTR_CLEAR];
@@ -280,6 +281,10 @@ static int ovs_meter_cmd_set(struct sk_buff *skb, struct genl_info *info)
 	u32 meter_id;
 	bool failed;
 
+	if (!a[OVS_METER_ATTR_ID]) {
+		return -ENODEV;
+	}
+
 	meter = dp_meter_create(a);
 	if (IS_ERR_OR_NULL(meter))
 		return PTR_ERR(meter);
@@ -298,11 +303,6 @@ static int ovs_meter_cmd_set(struct sk_buff *skb, struct genl_info *info)
 		goto exit_unlock;
 	}
 
-	if (!a[OVS_METER_ATTR_ID]) {
-		err = -ENODEV;
-		goto exit_unlock;
-	}
-
 	meter_id = nla_get_u32(a[OVS_METER_ATTR_ID]);
 
 	/* Cannot fail after this. */
diff --git a/net/rds/ib_frmr.c b/net/rds/ib_frmr.c
index 48332a6ed738..d152e48ea371 100644
--- a/net/rds/ib_frmr.c
+++ b/net/rds/ib_frmr.c
@@ -344,6 +344,11 @@ struct rds_ib_mr *rds_ib_reg_frmr(struct rds_ib_device *rds_ibdev,
 	struct rds_ib_frmr *frmr;
 	int ret;
 
+	if (!ic) {
+		/* TODO: Add FRWR support for RDS_GET_MR using proxy qp*/
+		return ERR_PTR(-EOPNOTSUPP);
+	}
+
 	do {
 		if (ibmr)
 			rds_ib_free_frmr(ibmr, true);
diff --git a/net/rds/ib_mr.h b/net/rds/ib_mr.h
index 0ea4ab017a8c..655f01d427fe 100644
--- a/net/rds/ib_mr.h
+++ b/net/rds/ib_mr.h
@@ -115,7 +115,8 @@ void rds_ib_get_mr_info(struct rds_ib_device *rds_ibdev,
 			struct rds_info_rdma_connection *iinfo);
 void rds_ib_destroy_mr_pool(struct rds_ib_mr_pool *);
 void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
-		    struct rds_sock *rs, u32 *key_ret);
+		    struct rds_sock *rs, u32 *key_ret,
+		    struct rds_connection *conn);
 void rds_ib_sync_mr(void *trans_private, int dir);
 void rds_ib_free_mr(void *trans_private, int invalidate);
 void rds_ib_flush_mrs(void);
diff --git a/net/rds/ib_rdma.c b/net/rds/ib_rdma.c
index e678699268a2..2e49a40a5e11 100644
--- a/net/rds/ib_rdma.c
+++ b/net/rds/ib_rdma.c
@@ -537,11 +537,12 @@ void rds_ib_flush_mrs(void)
 }
 
 void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
-		    struct rds_sock *rs, u32 *key_ret)
+		    struct rds_sock *rs, u32 *key_ret,
+		    struct rds_connection *conn)
 {
 	struct rds_ib_device *rds_ibdev;
 	struct rds_ib_mr *ibmr = NULL;
-	struct rds_ib_connection *ic = rs->rs_conn->c_transport_data;
+	struct rds_ib_connection *ic = NULL;
 	int ret;
 
 	rds_ibdev = rds_ib_get_device(rs->rs_bound_addr);
@@ -550,6 +551,9 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
 		goto out;
 	}
 
+	if (conn)
+		ic = conn->c_transport_data;
+
 	if (!rds_ibdev->mr_8k_pool || !rds_ibdev->mr_1m_pool) {
 		ret = -ENODEV;
 		goto out;
@@ -559,17 +563,18 @@ void *rds_ib_get_mr(struct scatterlist *sg, unsigned long nents,
 		ibmr = rds_ib_reg_frmr(rds_ibdev, ic, sg, nents, key_ret);
 	else
 		ibmr = rds_ib_reg_fmr(rds_ibdev, sg, nents, key_ret);
-	if (ibmr)
-		rds_ibdev = NULL;
-
- out:
-	if (!ibmr)
+	if (IS_ERR(ibmr)) {
+		ret = PTR_ERR(ibmr);
 		pr_warn("RDS/IB: rds_ib_get_mr failed (errno=%d)\n", ret);
+	} else {
+		return ibmr;
+	}
 
+ out:
 	if (rds_ibdev)
 		rds_ib_dev_put(rds_ibdev);
 
-	return ibmr;
+	return ERR_PTR(ret);
 }
 
 void rds_ib_destroy_mr_pool(struct rds_ib_mr_pool *pool)
diff --git a/net/rds/rdma.c b/net/rds/rdma.c
index 634cfcb7bba6..80920e47f2c7 100644
--- a/net/rds/rdma.c
+++ b/net/rds/rdma.c
@@ -170,7 +170,8 @@ static int rds_pin_pages(unsigned long user_addr, unsigned int nr_pages,
 }
 
 static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
-				u64 *cookie_ret, struct rds_mr **mr_ret)
+			  u64 *cookie_ret, struct rds_mr **mr_ret,
+			  struct rds_conn_path *cp)
 {
 	struct rds_mr *mr = NULL, *found;
 	unsigned int nr_pages;
@@ -269,7 +270,8 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args,
 	 * Note that dma_map() implies that pending writes are
 	 * flushed to RAM, so no dma_sync is needed here. */
 	trans_private = rs->rs_transport->get_mr(sg, nents, rs,
-						 &mr->r_key);
+						 &mr->r_key,
+						 cp ? cp->cp_conn : NULL);
 
 	if (IS_ERR(trans_private)) {
 		for (i = 0 ; i < nents; i++)
@@ -330,7 +332,7 @@ int rds_get_mr(struct rds_sock *rs, char __user *optval, int optlen)
 			   sizeof(struct rds_get_mr_args)))
 		return -EFAULT;
 
-	return __rds_rdma_map(rs, &args, NULL, NULL);
+	return __rds_rdma_map(rs, &args, NULL, NULL, NULL);
 }
 
 int rds_get_mr_for_dest(struct rds_sock *rs, char __user *optval, int optlen)
@@ -354,7 +356,7 @@ int rds_get_mr_for_dest(struct rds_sock *rs, char __user *optval, int optlen)
 	new_args.cookie_addr = args.cookie_addr;
 	new_args.flags = args.flags;
 
-	return __rds_rdma_map(rs, &new_args, NULL, NULL);
+	return __rds_rdma_map(rs, &new_args, NULL, NULL, NULL);
 }
 
 /*
@@ -782,7 +784,8 @@ int rds_cmsg_rdma_map(struct rds_sock *rs, struct rds_message *rm,
 	    rm->m_rdma_cookie != 0)
 		return -EINVAL;
 
-	return __rds_rdma_map(rs, CMSG_DATA(cmsg), &rm->m_rdma_cookie, &rm->rdma.op_rdma_mr);
+	return __rds_rdma_map(rs, CMSG_DATA(cmsg), &rm->m_rdma_cookie,
+			      &rm->rdma.op_rdma_mr, rm->m_conn_path);
 }
 
 /*
diff --git a/net/rds/rds.h b/net/rds/rds.h
index f2272fb8cd45..60b3b787fbdb 100644
--- a/net/rds/rds.h
+++ b/net/rds/rds.h
@@ -464,6 +464,8 @@ struct rds_message {
 			struct scatterlist	*op_sg;
 		} data;
 	};
+
+	struct rds_conn_path *m_conn_path;
 };
 
 /*
@@ -544,7 +546,8 @@ struct rds_transport {
 					unsigned int avail);
 	void (*exit)(void);
 	void *(*get_mr)(struct scatterlist *sg, unsigned long nr_sg,
-			struct rds_sock *rs, u32 *key_ret);
+			struct rds_sock *rs, u32 *key_ret,
+			struct rds_connection *conn);
 	void (*sync_mr)(void *trans_private, int direction);
 	void (*free_mr)(void *trans_private, int invalidate);
 	void (*flush_mrs)(void);
diff --git a/net/rds/send.c b/net/rds/send.c
index 94c7f74909be..59f17a2335f4 100644
--- a/net/rds/send.c
+++ b/net/rds/send.c
@@ -1169,6 +1169,13 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
 		rs->rs_conn = conn;
 	}
 
+	if (conn->c_trans->t_mp_capable)
+		cpath = &conn->c_path[rds_send_mprds_hash(rs, conn)];
+	else
+		cpath = &conn->c_path[0];
+
+	rm->m_conn_path = cpath;
+
 	/* Parse any control messages the user may have included. */
 	ret = rds_cmsg_send(rs, rm, msg, &allocated_mr);
 	if (ret) {
@@ -1192,11 +1199,6 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len)
 		goto out;
 	}
 
-	if (conn->c_trans->t_mp_capable)
-		cpath = &conn->c_path[rds_send_mprds_hash(rs, conn)];
-	else
-		cpath = &conn->c_path[0];
-
 	if (rds_destroy_pending(conn)) {
 		ret = -EAGAIN;
 		goto out;
diff --git a/net/socket.c b/net/socket.c
index 85633622c94d..8c24d5dc4bc8 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -89,6 +89,7 @@
 #include <linux/magic.h>
 #include <linux/slab.h>
 #include <linux/xattr.h>
+#include <linux/nospec.h>
 
 #include <linux/uaccess.h>
 #include <asm/unistd.h>
@@ -2522,6 +2523,7 @@ SYSCALL_DEFINE2(socketcall, int, call, unsigned long __user *, args)
 
 	if (call < 1 || call > SYS_SENDMMSG)
 		return -EINVAL;
+	call = array_index_nospec(call, SYS_SENDMMSG + 1);
 
 	len = nargs[call];
 	if (len > sizeof(a))
@@ -2688,7 +2690,8 @@ EXPORT_SYMBOL(sock_unregister);
 
 bool sock_is_registered(int family)
 {
-	return family < NPROTO && rcu_access_pointer(net_families[family]);
+	return family < NPROTO &&
+		rcu_access_pointer(net_families[array_index_nospec(family, NPROTO)]);
 }
 
 static int __init sock_init(void)
diff --git a/net/xdp/xsk_queue.h b/net/xdp/xsk_queue.h
index 52ecaf770642..8a64b150be54 100644
--- a/net/xdp/xsk_queue.h
+++ b/net/xdp/xsk_queue.h
@@ -250,7 +250,7 @@ static inline bool xskq_full_desc(struct xsk_queue *q)
 
 static inline bool xskq_empty_desc(struct xsk_queue *q)
 {
-	return xskq_nb_free(q, q->prod_tail, 1) == q->nentries;
+	return xskq_nb_free(q, q->prod_tail, q->nentries) == q->nentries;
 }
 
 void xskq_set_umem(struct xsk_queue *q, struct xdp_umem_props *umem_props);
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 5f48251c1319..7c5e8978aeaa 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2286,6 +2286,9 @@ struct dst_entry *xfrm_lookup_route(struct net *net, struct dst_entry *dst_orig,
 	if (IS_ERR(dst) && PTR_ERR(dst) == -EREMOTE)
 		return make_blackhole(net, dst_orig->ops->family, dst_orig);
 
+	if (IS_ERR(dst))
+		dst_release(dst_orig);
+
 	return dst;
 }
 EXPORT_SYMBOL(xfrm_lookup_route);
diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 080035f056d9..33878e6e0d0a 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1025,10 +1025,12 @@ static inline int xfrm_nlmsg_multicast(struct net *net, struct sk_buff *skb,
 {
 	struct sock *nlsk = rcu_dereference(net->xfrm.nlsk);
 
-	if (nlsk)
-		return nlmsg_multicast(nlsk, skb, pid, group, GFP_ATOMIC);
-	else
-		return -1;
+	if (!nlsk) {
+		kfree_skb(skb);
+		return -EPIPE;
+	}
+
+	return nlmsg_multicast(nlsk, skb, pid, group, GFP_ATOMIC);
 }
 
 static inline unsigned int xfrm_spdinfo_msgsize(void)
@@ -1671,9 +1673,11 @@ static inline unsigned int userpolicy_type_attrsize(void)
 #ifdef CONFIG_XFRM_SUB_POLICY
 static int copy_to_user_policy_type(u8 type, struct sk_buff *skb)
 {
-	struct xfrm_userpolicy_type upt = {
-		.type = type,
-	};
+	struct xfrm_userpolicy_type upt;
+
+	/* Sadly there are two holes in struct xfrm_userpolicy_type */
+	memset(&upt, 0, sizeof(upt));
+	upt.type = type;
 
 	return nla_put(skb, XFRMA_POLICY_TYPE, sizeof(upt), &upt);
 }