2 files changed, 4 insertions, 1 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 97e294e82679..354721d67f69 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -878,6 +878,7 @@ int tcp_v4_md5_do_add(struct sock *sk, __be32 addr,
                                 kfree(newkey);
                                 return -ENOMEM;
                         }
+                        sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
                 }
                 if (tcp_alloc_md5sig_pool() == NULL) {
                         kfree(newkey);
@@ -1007,7 +1008,7 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, char __user *optval,
                         return -EINVAL;
 
                 tp->md5sig_info = p;
-
+                sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
         }
 
         newkey = kmemdup(cmd.tcpm_key, cmd.tcpm_keylen, GFP_KERNEL);
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 4f06a51ad4fd..193d9d60bb7a 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -590,6 +590,7 @@ static int tcp_v6_md5_do_add(struct sock *sk, struct in6_addr *peer,
                                 kfree(newkey);
                                 return -ENOMEM;
                         }
+                        sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
                 }
                 tcp_alloc_md5sig_pool();
                 if (tp->md5sig_info->alloced6 == tp->md5sig_info->entries6) {
@@ -724,6 +725,7 @@ static int tcp_v6_parse_md5_keys (struct sock *sk, char __user *optval,
                         return -ENOMEM;
 
                 tp->md5sig_info = p;
+                sk->sk_route_caps &= ~NETIF_F_GSO_MASK;
         }
 
         newkey = kmemdup(cmd.tcpm_key, cmd.tcpm_keylen, GFP_KERNEL);