diff --git a/net/ipv4/inet_diag.c b/net/ipv4/inet_diag.c
index 5b20544e747088868b7ed8483a7176276eb54205..21af2c03b85f5a8da20962ed2d808684f5955fe0 100644
--- a/net/ipv4/inet_diag.c
+++ b/net/ipv4/inet_diag.c
@@ -1481,5 +1481,6 @@ static void __exit inet_diag_exit(void)
 module_init(inet_diag_init);
 module_exit(inet_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("INET/INET6: socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2 /* AF_INET */);
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 10 /* AF_INET6 */);
diff --git a/net/ipv4/raw_diag.c b/net/ipv4/raw_diag.c
index 63a40e4b678f59e29aa4bcbc8fe15116f1b4c568..fe2140c8375c8ebcc69880142c42655233007900 100644
--- a/net/ipv4/raw_diag.c
+++ b/net/ipv4/raw_diag.c
@@ -257,5 +257,6 @@ static void __exit raw_diag_exit(void)
 module_init(raw_diag_init);
 module_exit(raw_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("RAW socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-255 /* AF_INET - IPPROTO_RAW */);
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 10-255 /* AF_INET6 - IPPROTO_RAW */);
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 01b50fa791898831dc777bb3a64ad93ad57c1bfd..4cbe4b44425a6a5daf55abe348c167932ca07222 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -247,4 +247,5 @@ static void __exit tcp_diag_exit(void)
 module_init(tcp_diag_init);
 module_exit(tcp_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("TCP socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-6 /* AF_INET - IPPROTO_TCP */);
diff --git a/net/ipv4/udp_diag.c b/net/ipv4/udp_diag.c
index de3f2d31f510a9f1c41ec8c9a830df2e07d768fc..dc41a22ee80e829582349e8e644f204eff07df0e 100644
--- a/net/ipv4/udp_diag.c
+++ b/net/ipv4/udp_diag.c
@@ -296,5 +296,6 @@ static void __exit udp_diag_exit(void)
 module_init(udp_diag_init);
 module_exit(udp_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("UDP socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-17 /* AF_INET - IPPROTO_UDP */);
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-136 /* AF_INET - IPPROTO_UDPLITE */);
diff --git a/net/mptcp/mptcp_diag.c b/net/mptcp/mptcp_diag.c
index 8df1bdb647e299344110610688618ca74ec32026..5409c2ea3f5728a05999db17b7af1b1fb56f757e 100644
--- a/net/mptcp/mptcp_diag.c
+++ b/net/mptcp/mptcp_diag.c
@@ -245,4 +245,5 @@ static void __exit mptcp_diag_exit(void)
 module_init(mptcp_diag_init);
 module_exit(mptcp_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MPTCP socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-262 /* AF_INET - IPPROTO_MPTCP */);
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c
index 7575a7f4dc7af0788da9dd73aa88ddadf2142a7d..61b0a4f15c28022e4d107989ce368e6dbe7e719a 100644
--- a/net/mptcp/pm_userspace.c
+++ b/net/mptcp/pm_userspace.c
@@ -164,6 +164,7 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
 	struct mptcp_pm_addr_entry addr_val;
 	struct mptcp_sock *msk;
 	int err = -EINVAL;
+	struct sock *sk;
 	u32 token_val;
 
 	if (!addr || !token) {
@@ -179,6 +180,8 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
 		return err;
 	}
 
+	sk = (struct sock *)msk;
+
 	if (!mptcp_pm_is_userspace(msk)) {
 		GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
 		goto announce_err;
@@ -202,7 +205,7 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
 		goto announce_err;
 	}
 
-	lock_sock((struct sock *)msk);
+	lock_sock(sk);
 	spin_lock_bh(&msk->pm.lock);
 
 	if (mptcp_pm_alloc_anno_list(msk, &addr_val.addr)) {
@@ -212,11 +215,11 @@ int mptcp_pm_nl_announce_doit(struct sk_buff *skb, struct genl_info *info)
 	}
 
 	spin_unlock_bh(&msk->pm.lock);
-	release_sock((struct sock *)msk);
+	release_sock(sk);
 
 	err = 0;
  announce_err:
-	sock_put((struct sock *)msk);
+	sock_put(sk);
 	return err;
 }
 
@@ -263,6 +266,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
 	struct mptcp_sock *msk;
 	LIST_HEAD(free_list);
 	int err = -EINVAL;
+	struct sock *sk;
 	u32 token_val;
 	u8 id_val;
 
@@ -280,6 +284,8 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
 		return err;
 	}
 
+	sk = (struct sock *)msk;
+
 	if (!mptcp_pm_is_userspace(msk)) {
 		GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
 		goto remove_err;
@@ -290,7 +296,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
 		goto remove_err;
 	}
 
-	lock_sock((struct sock *)msk);
+	lock_sock(sk);
 
 	list_for_each_entry(entry, &msk->pm.userspace_pm_local_addr_list, list) {
 		if (entry->addr.id == id_val) {
@@ -301,7 +307,7 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
 
 	if (!match) {
 		GENL_SET_ERR_MSG(info, "address with specified id not found");
-		release_sock((struct sock *)msk);
+		release_sock(sk);
 		goto remove_err;
 	}
 
@@ -309,15 +315,15 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info)
 
 	mptcp_pm_remove_addrs(msk, &free_list);
 
-	release_sock((struct sock *)msk);
+	release_sock(sk);
 
 	list_for_each_entry_safe(match, entry, &free_list, list) {
-		sock_kfree_s((struct sock *)msk, match, sizeof(*match));
+		sock_kfree_s(sk, match, sizeof(*match));
 	}
 
 	err = 0;
  remove_err:
-	sock_put((struct sock *)msk);
+	sock_put(sk);
 	return err;
 }
 
@@ -347,6 +353,8 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info)
 		return err;
 	}
 
+	sk = (struct sock *)msk;
+
 	if (!mptcp_pm_is_userspace(msk)) {
 		GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
 		goto create_err;
@@ -364,8 +372,6 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info)
 		goto create_err;
 	}
 
-	sk = (struct sock *)msk;
-
 	if (!mptcp_pm_addr_families_match(sk, &addr_l, &addr_r)) {
 		GENL_SET_ERR_MSG(info, "families mismatch");
 		err = -EINVAL;
@@ -393,7 +399,7 @@ int mptcp_pm_nl_subflow_create_doit(struct sk_buff *skb, struct genl_info *info)
 	spin_unlock_bh(&msk->pm.lock);
 
  create_err:
-	sock_put((struct sock *)msk);
+	sock_put(sk);
 	return err;
 }
 
@@ -470,6 +476,8 @@ int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info
 		return err;
 	}
 
+	sk = (struct sock *)msk;
+
 	if (!mptcp_pm_is_userspace(msk)) {
 		GENL_SET_ERR_MSG(info, "invalid request; userspace PM not selected");
 		goto destroy_err;
@@ -509,7 +517,6 @@ int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info
 		goto destroy_err;
 	}
 
-	sk = (struct sock *)msk;
 	lock_sock(sk);
 	ssk = mptcp_nl_find_ssk(msk, &addr_l, &addr_r);
 	if (ssk) {
@@ -529,7 +536,7 @@ int mptcp_pm_nl_subflow_destroy_doit(struct sk_buff *skb, struct genl_info *info
 	release_sock(sk);
 
 destroy_err:
-	sock_put((struct sock *)msk);
+	sock_put(sk);
 	return err;
 }
 
@@ -539,6 +546,7 @@ int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
 {
 	struct mptcp_sock *msk;
 	int ret = -EINVAL;
+	struct sock *sk;
 	u32 token_val;
 
 	token_val = nla_get_u32(token);
@@ -547,6 +555,8 @@ int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
 	if (!msk)
 		return ret;
 
+	sk = (struct sock *)msk;
+
 	if (!mptcp_pm_is_userspace(msk))
 		goto set_flags_err;
 
@@ -554,11 +564,11 @@ int mptcp_userspace_pm_set_flags(struct net *net, struct nlattr *token,
 	    rem->addr.family == AF_UNSPEC)
 		goto set_flags_err;
 
-	lock_sock((struct sock *)msk);
+	lock_sock(sk);
 	ret = mptcp_pm_nl_mp_prio_send_ack(msk, &loc->addr, &rem->addr, bkup);
-	release_sock((struct sock *)msk);
+	release_sock(sk);
 
 set_flags_err:
-	sock_put((struct sock *)msk);
+	sock_put(sk);
 	return ret;
 }
diff --git a/net/packet/diag.c b/net/packet/diag.c
index f6b200cb3c0668db7bf380d0868583440edca89b..9a7980e3309d6a2950688f8b69b08c15c288f601 100644
--- a/net/packet/diag.c
+++ b/net/packet/diag.c
@@ -262,4 +262,5 @@ static void __exit packet_diag_exit(void)
 module_init(packet_diag_init);
 module_exit(packet_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("PACKET socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 17 /* AF_PACKET */);
diff --git a/net/sctp/diag.c b/net/sctp/diag.c
index c3d6b92dd3862fc79947456a8d2eb342509406d1..eb05131ff1dd671e734457e28b2d7b64eab07f85 100644
--- a/net/sctp/diag.c
+++ b/net/sctp/diag.c
@@ -527,4 +527,5 @@ static void __exit sctp_diag_exit(void)
 module_init(sctp_diag_init);
 module_exit(sctp_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SCTP socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 2-132);
diff --git a/net/smc/smc_diag.c b/net/smc/smc_diag.c
index 37833b96b508ef1c621ed8b8ad30e79ff48391a2..fb9e5cc1285ec6fd610e07f96a366abd6d70610e 100644
--- a/net/smc/smc_diag.c
+++ b/net/smc/smc_diag.c
@@ -267,5 +267,6 @@ static void __exit smc_diag_exit(void)
 module_init(smc_diag_init);
 module_exit(smc_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SMC socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 43 /* AF_SMC */);
 MODULE_ALIAS_GENL_FAMILY(SMCR_GENL_FAMILY_NAME);
diff --git a/net/tipc/diag.c b/net/tipc/diag.c
index 73137f4aeb68f95677e34a3b2d5e823565024483..18733451c9e0c23a63d9400d408979aab46ecf19 100644
--- a/net/tipc/diag.c
+++ b/net/tipc/diag.c
@@ -113,4 +113,5 @@ module_init(tipc_diag_init);
 module_exit(tipc_diag_exit);
 
 MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("TIPC socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, AF_TIPC);
diff --git a/net/unix/diag.c b/net/unix/diag.c
index 3438b7af09af58187a7087f046eb10be3f8acb67..be19827eca36dbb68ec97b2e9b3c80e22b4fa4be 100644
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -339,4 +339,5 @@ static void __exit unix_diag_exit(void)
 module_init(unix_diag_init);
 module_exit(unix_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("UNIX socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, 1 /* AF_LOCAL */);
diff --git a/net/vmw_vsock/diag.c b/net/vmw_vsock/diag.c
index a2823b1c5e28b15d745e7a5b4a7c9de83698e70a..2e29994f92ffa2facee45cd53ec791034182508c 100644
--- a/net/vmw_vsock/diag.c
+++ b/net/vmw_vsock/diag.c
@@ -174,5 +174,6 @@ static void __exit vsock_diag_exit(void)
 module_init(vsock_diag_init);
 module_exit(vsock_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("VMware Virtual Sockets monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG,
 			       40 /* AF_VSOCK */);
diff --git a/net/xdp/xsk_diag.c b/net/xdp/xsk_diag.c
index 22b36c8143cfd5a96ccb7e1934880a98f16f179c..9f8955367275e2439d910f978fc3b2b7a1669978 100644
--- a/net/xdp/xsk_diag.c
+++ b/net/xdp/xsk_diag.c
@@ -211,4 +211,5 @@ static void __exit xsk_diag_exit(void)
 module_init(xsk_diag_init);
 module_exit(xsk_diag_exit);
 MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("XDP socket monitoring via SOCK_DIAG");
 MODULE_ALIAS_NET_PF_PROTO_TYPE(PF_NETLINK, NETLINK_SOCK_DIAG, AF_XDP);
diff --git a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
index 306d6c4ed5bb4fc7e281da6584c0dfec2b06a73b..bfa744e350eff246f8105d8f8e1342e7a9efc802 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_sockopt.sh
@@ -11,7 +11,6 @@ cout=""
 ksft_skip=4
 timeout_poll=30
 timeout_test=$((timeout_poll * 2 + 1))
-mptcp_connect=""
 iptables="iptables"
 ip6tables="ip6tables"