netfilter: ipset: Fix "may be used uninitialized" warnings

Reported-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>

net/netfilter/ipset/ip_set_bitmap_ip.c

@@ -131,7 +131,7 @@ bitmap_ip_uadt(struct ip_set *set, struct nlattr *tb[],
 {
 	struct bitmap_ip *map = set->data;
 	ipset_adtfn adtfn = set->variant->adt[adt];
-	u32 ip, ip_to;
+	u32 ip = 0, ip_to = 0;
 	struct bitmap_ip_adt_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(map);
 	int ret = 0;
@@ -264,7 +264,7 @@ static int
 bitmap_ip_create(struct ip_set *set, struct nlattr *tb[], u32 flags)
 {
 	struct bitmap_ip *map;
-	u32 first_ip, last_ip, hosts, cadt_flags = 0;
+	u32 first_ip = 0, last_ip = 0, hosts, cadt_flags = 0;
 	u64 elements;
 	u8 netmask = 32;
 	int ret;

net/netfilter/ipset/ip_set_bitmap_ipmac.c

@@ -246,7 +246,7 @@ bitmap_ipmac_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct bitmap_ipmac_adt_elem e = {};
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(map);
-	u32 ip;
+	u32 ip = 0;
 	int ret = 0;
 
 	if (unlikely(!tb[IPSET_ATTR_IP] ||
@@ -355,7 +355,7 @@ static int
 bitmap_ipmac_create(struct ip_set *set, struct nlattr *tb[],
 		    u32 flags)
 {
-	u32 first_ip, last_ip, cadt_flags = 0;
+	u32 first_ip = 0, last_ip = 0, cadt_flags = 0;
 	u64 elements;
 	struct bitmap_ipmac *map;
 	int ret;

net/netfilter/ipset/ip_set_hash_ip.c

@@ -119,7 +119,7 @@ hash_ip4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_ip4_elem e = {};
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(h);
-	u32 ip, ip_to, hosts;
+	u32 ip = 0, ip_to = 0, hosts;
 	int ret = 0;
 
 	if (unlikely(!tb[IPSET_ATTR_IP] ||

net/netfilter/ipset/ip_set_hash_ipport.c

@@ -137,7 +137,7 @@ hash_ipport4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_ipport4_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(h);
-	u32 ip, ip_to, p = 0, port, port_to;
+	u32 ip, ip_to = 0, p = 0, port, port_to;
 	bool with_ports = false;
 	int ret;
 

net/netfilter/ipset/ip_set_hash_ipportip.c

@@ -142,7 +142,7 @@ hash_ipportip4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_ipportip4_elem e = { };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(h);
-	u32 ip, ip_to, p = 0, port, port_to;
+	u32 ip, ip_to = 0, p = 0, port, port_to;
 	bool with_ports = false;
 	int ret;
 

net/netfilter/ipset/ip_set_hash_ipportnet.c

@@ -196,8 +196,8 @@ hash_ipportnet4_uadt(struct ip_set *set, struct nlattr *tb[],
 	ipset_adtfn adtfn = set->variant->adt[adt];
 	struct hash_ipportnet4_elem e = { .cidr = HOST_MASK - 1 };
 	struct ip_set_ext ext = IP_SET_INIT_UEXT(h);
-	u32 ip, ip_to, p = 0, port, port_to;
-	u32 ip2_from, ip2_to, ip2_last, ip2;
+	u32 ip = 0, ip_to = 0, p = 0, port, port_to;
+	u32 ip2_from = 0, ip2_to = 0, ip2_last, ip2;
 	bool with_ports = false;
 	u8 cidr;
 	int ret;

net/netfilter/ipset/ip_set_hash_net.c

@@ -166,7 +166,7 @@ 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(h);
-	u32 ip = 0, ip_to, last;
+	u32 ip = 0, ip_to = 0, last;
 	int ret;
 
 	if (unlikely(!tb[IPSET_ATTR_IP] ||

net/netfilter/ipset/ip_set_hash_netiface.c

@@ -320,7 +320,7 @@ 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(h);
-	u32 ip = 0, ip_to, last;
+	u32 ip = 0, ip_to = 0, last;
 	char iface[IFNAMSIZ];
 	int ret;
 

net/netfilter/ipset/ip_set_hash_netport.c

@@ -187,7 +187,7 @@ 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(h);
-	u32 port, port_to, p = 0, ip = 0, ip_to, last;
+	u32 port, port_to, p = 0, ip = 0, ip_to = 0, last;
 	bool with_ports = false;
 	u8 cidr;
 	int ret;