1 files changed, 5 insertions, 2 deletions

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 9a17f28b1253..9ba70146a4fe 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1610,9 +1610,11 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
 
                 err = -EINVAL;
                 vnet_hdr_len = sizeof(vnet_hdr);
-                if ((len -= vnet_hdr_len) < 0)
+                if (len < vnet_hdr_len)
                         goto out_free;
 
+                len -= vnet_hdr_len;
+
                 if (skb_is_gso(skb)) {
                         struct skb_shared_info *sinfo = skb_shinfo(skb);
 
@@ -1719,7 +1721,7 @@ static int packet_getname_spkt(struct socket *sock, struct sockaddr *uaddr,
         rcu_read_lock();
         dev = dev_get_by_index_rcu(sock_net(sk), pkt_sk(sk)->ifindex);
         if (dev)
-                strlcpy(uaddr->sa_data, dev->name, 15);
+                strncpy(uaddr->sa_data, dev->name, 14);
         else
                 memset(uaddr->sa_data, 0, 14);
         rcu_read_unlock();
@@ -1742,6 +1744,7 @@ static int packet_getname(struct socket *sock, struct sockaddr *uaddr,
         sll->sll_family = AF_PACKET;
         sll->sll_ifindex = po->ifindex;
         sll->sll_protocol = po->num;
+        sll->sll_pkttype = 0;
         rcu_read_lock();
         dev = dev_get_by_index_rcu(sock_net(sk), po->ifindex);
         if (dev) {