1 files changed, 6 insertions, 1 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 1eb4ad57670e..94d683a61cba 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -631,7 +631,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
         arg.iov[0].iov_len  = sizeof(rep.th);
 
 #ifdef CONFIG_TCP_MD5SIG
-        key = sk ? tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->daddr) : NULL;
+        key = sk ? tcp_v4_md5_do_lookup(sk, ip_hdr(skb)->saddr) : NULL;
         if (key) {
                 rep.opt[0] = htonl((TCPOPT_NOP << 24) |
                                    (TCPOPT_NOP << 16) |
@@ -651,6 +651,11 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
                                       arg.iov[0].iov_len, IPPROTO_TCP, 0);
         arg.csumoffset = offsetof(struct tcphdr, check) / 2;
         arg.flags = (sk && inet_sk(sk)->transparent) ? IP_REPLY_ARG_NOSRCCHECK : 0;
+        /* When socket is gone, all binding information is lost.
+         * routing might fail in this case. using iif for oif to
+         * make sure we can deliver it
+         */
+        arg.bound_dev_if = sk ? sk->sk_bound_dev_if : inet_iif(skb);
 
         net = dev_net(skb_dst(skb)->dev);
         arg.tos = ip_hdr(skb)->tos;