[NETFILTER]: ip_conntrack_expect_related must not free expectation

[firefly-linux-kernel-4.4.55.git] / net / ipv4 / netfilter / ip_nat_tftp.c

diff --git a/net/ipv4/netfilter/ip_nat_tftp.c b/net/ipv4/netfilter/ip_nat_tftp.c
index 0343e0d64674d46a1b97d017036b65f5dded1772..2215317c76b7d177299969b87adbc31feabc6a51 100644 (file)
--- a/net/ipv4/netfilter/ip_nat_tftp.c
+++ b/net/ipv4/netfilter/ip_nat_tftp.c
@@ -45,10 +45,8 @@ static unsigned int help(struct sk_buff **pskb,
        exp->saved_proto.udp.port = exp->tuple.dst.u.tcp.port;
        exp->dir = IP_CT_DIR_REPLY;
        exp->expectfn = ip_nat_follow_master;
-       if (ip_conntrack_expect_related(exp) != 0) {
-               ip_conntrack_expect_free(exp);
+       if (ip_conntrack_expect_related(exp) != 0)
                return NF_DROP;
-       }
        return NF_ACCEPT;
 }