[TCP]: Fix bug #5070: kernel BUG at net/ipv4/tcp_output.c:864

[linux-2.6] / net / ipv4 / netfilter / ip_conntrack_standalone.c

diff --git a/net/ipv4/netfilter/ip_conntrack_standalone.c b/net/ipv4/netfilter/ip_conntrack_standalone.c
index 42dc95102873f17ef4825e80a4056a3f1ef0b7af..61798c46e91d06e051947db664c301a45b5b6b74 100644 (file)
--- a/net/ipv4/netfilter/ip_conntrack_standalone.c
+++ b/net/ipv4/netfilter/ip_conntrack_standalone.c
@@ -432,6 +432,13 @@ static unsigned int ip_conntrack_defrag(unsigned int hooknum,
                                        const struct net_device *out,
                                        int (*okfn)(struct sk_buff *))
 {
+#if !defined(CONFIG_IP_NF_NAT) && !defined(CONFIG_IP_NF_NAT_MODULE)
+       /* Previously seen (loopback)?  Ignore.  Do this before
+           fragment check. */
+       if ((*pskb)->nfct)
+               return NF_ACCEPT;
+#endif
+
        /* Gather fragments. */
        if ((*pskb)->nh.iph->frag_off & htons(IP_MF|IP_OFFSET)) {
                *pskb = ip_ct_gather_frags(*pskb,
@@ -978,7 +985,7 @@ EXPORT_SYMBOL(ip_ct_refresh_acct);
 EXPORT_SYMBOL(ip_ct_protos);
 EXPORT_SYMBOL(ip_ct_find_proto);
 EXPORT_SYMBOL(ip_conntrack_expect_alloc);
-EXPORT_SYMBOL(ip_conntrack_expect_free);
+EXPORT_SYMBOL(ip_conntrack_expect_put);
 EXPORT_SYMBOL(ip_conntrack_expect_related);
 EXPORT_SYMBOL(ip_conntrack_unexpect_related);
 EXPORT_SYMBOL(ip_conntrack_tuple_taken);