misc: Fix allocation 'borrowed' by vhost_net

[safe/jmp/linux-2.6] / net / ipv6 / udp.c

diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 79359c8..87be586 100644 (file)
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -328,6 +328,7 @@ int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
        int err;
        int is_udplite = IS_UDPLITE(sk);
        int is_udp4;
+       bool slow;
 
        if (addr_len)
                *addr_len=sizeof(struct sockaddr_in6);
@@ -424,7 +425,7 @@ out:
        return err;
 
 csum_copy_err:
-       lock_sock_bh(sk);
+       slow = lock_sock_fast(sk);
        if (!skb_kill_datagram(sk, skb, flags)) {
                if (is_udp4)
                        UDP_INC_STATS_USER(sock_net(sk),
@@ -433,7 +434,7 @@ csum_copy_err:
                        UDP6_INC_STATS_USER(sock_net(sk),
                                        UDP_MIB_INERRORS, is_udplite);
        }
-       unlock_sock_bh(sk);
+       unlock_sock_fast(sk, slow);
 
        if (flags & MSG_DONTWAIT)
                return -EAGAIN;
@@ -699,7 +700,7 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
        u32 ulen = 0;
 
        if (!pskb_may_pull(skb, sizeof(struct udphdr)))
-               goto short_packet;
+               goto discard;
 
        saddr = &ipv6_hdr(skb)->saddr;
        daddr = &ipv6_hdr(skb)->daddr;
@@ -781,9 +782,14 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
        return 0;
 
 short_packet:
-       LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: %d/%u\n",
+       LIMIT_NETDEBUG(KERN_DEBUG "UDP%sv6: short packet: From [%pI6c]:%u %d/%d to [%pI6c]:%u\n",
                       proto == IPPROTO_UDPLITE ? "-Lite" : "",
-                      ulen, skb->len);
+                      saddr,
+                      ntohs(uh->source),
+                      ulen,
+                      skb->len,
+                      daddr,
+                      ntohs(uh->dest));
 
 discard:
        UDP6_INC_STATS_BH(net, UDP_MIB_INERRORS, proto == IPPROTO_UDPLITE);