netfilter: ipset: Make sure we always return line number on batch

Even if we return with generic IPSET_ERR_PROTOCOL it is good idea
to return line number if we called in batch mode.

Moreover we are not always exiting with IPSET_ERR_PROTOCOL. For
example hash:ip,port,net may return IPSET_ERR_HASH_RANGE_UNSUPPORTED
or IPSET_ERR_INVALID_CIDR.

Signed-off-by: Sergey Popovich <popovich_sergei@mail.ua>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>

net/netfilter/ipset/ip_set_bitmap_ip.c

@@ -138,12 +138,12 @@ bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret = 0;
 
-	if (unlikely(!tb[IPSET_ATTR_IP]))
-		return -IPSET_ERR_PROTOCOL;
-
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	if (unlikely(!tb[IPSET_ATTR_IP]))
+		return -IPSET_ERR_PROTOCOL;
+
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_bitmap_ipmac.c

@@ -239,12 +239,12 @@ bitmap_ipmac_uadt(struct ip_set *set, struct nlattr *tb[],
 	u32 ip = 0;
 	int ret = 0;
 
-	if (unlikely(!tb[IPSET_ATTR_IP]))
-		return -IPSET_ERR_PROTOCOL;
-
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	if (unlikely(!tb[IPSET_ATTR_IP]))
+		return -IPSET_ERR_PROTOCOL;
+
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_bitmap_port.c

@@ -136,13 +136,13 @@ bitmap_port_uadt(struct ip_set *set, struct nlattr *tb[],
 	u16 port_to;
 	int ret = 0;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	port = ip_set_get_h16(tb[IPSET_ATTR_PORT]);
 	if (port < map->first_port || port > map->last_port)
 		return -IPSET_ERR_BITMAP_RANGE;

net/netfilter/ipset/ip_set_hash_ip.c

@@ -108,12 +108,12 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u32 ip = 0, ip_to = 0, hosts;
 	int ret = 0;
 
-	if (unlikely(!tb[IPSET_ATTR_IP]))
-		return -IPSET_ERR_PROTOCOL;
-
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	if (unlikely(!tb[IPSET_ATTR_IP]))
+		return -IPSET_ERR_PROTOCOL;
+
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -240,6 +240,9 @@ hash_ip6_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP]))
 		return -IPSET_ERR_PROTOCOL;
 	if (unlikely(tb[IPSET_ATTR_IP_TO]))
@@ -251,9 +254,6 @@ hash_ip6_uadt(struct ip_set *set, struct nlattr *tb[],
 			return -IPSET_ERR_INVALID_CIDR;
 	}
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_ipmark.c

@@ -108,13 +108,13 @@ hash_ipmark4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u32 ip, ip_to = 0;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_MARK)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;
@@ -234,6 +234,9 @@ hash_ipmark6_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_MARK)))
 		return -IPSET_ERR_PROTOCOL;
@@ -246,9 +249,6 @@ hash_ipmark6_uadt(struct ip_set *set, struct nlattr *tb[],
 			return -IPSET_ERR_INVALID_CIDR;
 	}
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_ipport.c

@@ -116,14 +116,14 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
 	bool with_ports = false;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;
@@ -273,6 +273,9 @@ hash_ipport6_uadt(struct ip_set *set, struct nlattr *tb[],
 	bool with_ports = false;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO)))
@@ -286,9 +289,6 @@ hash_ipport6_uadt(struct ip_set *set, struct nlattr *tb[],
 			return -IPSET_ERR_INVALID_CIDR;
 	}
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_ipportip.c

@@ -119,14 +119,14 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
 	bool with_ports = false;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr4(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;
@@ -284,6 +284,9 @@ hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
 	bool with_ports = false;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO)))
@@ -297,9 +300,6 @@ hash_ipportip6_uadt(struct ip_set *set, struct nlattr *tb[],
 			return -IPSET_ERR_INVALID_CIDR;
 	}
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_ipportnet.c

@@ -173,15 +173,15 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u8 cidr;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -420,6 +420,9 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 	u8 cidr;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
@@ -434,9 +437,6 @@ hash_ipportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 			return -IPSET_ERR_INVALID_CIDR;
 	}
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_mac.c

@@ -107,12 +107,12 @@ hash_mac4_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret;
 
-	if (unlikely(!tb[IPSET_ATTR_ETHER]))
-		return -IPSET_ERR_PROTOCOL;
-
 	if (tb[IPSET_ATTR_LINENO])
 		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
 
+	if (unlikely(!tb[IPSET_ATTR_ETHER]))
+		return -IPSET_ERR_PROTOCOL;
+
 	ret = ip_set_get_extensions(set, tb, &ext);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_net.c

@@ -146,13 +146,13 @@ hash_net4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u32 ip = 0, ip_to = 0, last;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -312,15 +312,15 @@ hash_net6_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 	if (unlikely(tb[IPSET_ATTR_IP_TO]))
 		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_netiface.c

@@ -293,14 +293,14 @@ hash_netiface4_uadt(struct ip_set *set, struct nlattr *tb[],
 	char iface[IFNAMSIZ];
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !tb[IPSET_ATTR_IFACE] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -523,6 +523,9 @@ hash_netiface6_uadt(struct ip_set *set, struct nlattr *tb[],
 	char iface[IFNAMSIZ];
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !tb[IPSET_ATTR_IFACE] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
@@ -530,9 +533,6 @@ hash_netiface6_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (unlikely(tb[IPSET_ATTR_IP_TO]))
 		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_netnet.c

@@ -167,14 +167,14 @@ hash_netnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u8 cidr, cidr2;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	e.cidr[0] = e.cidr[1] = HOST_MASK;
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -392,6 +392,9 @@ hash_netnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(set);
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	e.cidr[0] = e.cidr[1] = HOST_MASK;
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
@@ -399,9 +402,6 @@ hash_netnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (unlikely(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_IP2_TO]))
 		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_netport.c

@@ -166,15 +166,15 @@ hash_netport4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u8 cidr;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -378,6 +378,9 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
 	u8 cidr;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_PORT_TO) ||
@@ -386,9 +389,6 @@ hash_netport6_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (unlikely(tb[IPSET_ATTR_IP_TO]))
 		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_hash_netportnet.c

@@ -183,6 +183,9 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	u8 cidr, cidr2;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	e.cidr[0] = e.cidr[1] = HOST_MASK;
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
@@ -190,9 +193,6 @@ hash_netportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_hostipaddr4(tb[IPSET_ATTR_IP], &ip);
 	if (ret)
 		return ret;
@@ -453,6 +453,9 @@ hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 	bool with_ports = false;
 	int ret;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	e.cidr[0] = e.cidr[1] = HOST_MASK;
 	if (unlikely(!tb[IPSET_ATTR_IP] || !tb[IPSET_ATTR_IP2] ||
 		     !ip_set_attr_netorder(tb, IPSET_ATTR_PORT) ||
@@ -462,9 +465,6 @@ hash_netportnet6_uadt(struct ip_set *set, struct nlattr *tb[],
 	if (unlikely(tb[IPSET_ATTR_IP_TO] || tb[IPSET_ATTR_IP2_TO]))
 		return -IPSET_ERR_HASH_RANGE_UNSUPPORTED;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_ipaddr6(tb[IPSET_ATTR_IP], &e.ip[0]);
 	if (ret)
 		return ret;

net/netfilter/ipset/ip_set_list_set.c

@@ -383,13 +383,13 @@ list_set_uadt(struct ip_set *set, struct nlattr *tb[],
 	struct ip_set *s;
 	int ret = 0;
 
+	if (tb[IPSET_ATTR_LINENO])
+		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
+
 	if (unlikely(!tb[IPSET_ATTR_NAME] ||
 		     !ip_set_optattr_netorder(tb, IPSET_ATTR_CADT_FLAGS)))
 		return -IPSET_ERR_PROTOCOL;
 
-	if (tb[IPSET_ATTR_LINENO])
-		*lineno = nla_get_u32(tb[IPSET_ATTR_LINENO]);
-
 	ret = ip_set_get_extensions(set, tb, &ext);
 	if (ret)
 		return ret;