1 files changed, 7 insertions, 6 deletions

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 48ada1b2d2c4..0cd71b84e483 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2389,7 +2389,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
         unsigned int seq;
         __be32 delta;
         unsigned int oldlen;
-        unsigned int len;
+        unsigned int mss;
 
         if (!pskb_may_pull(skb, sizeof(*th)))
                 goto out;
@@ -2405,10 +2405,13 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
         oldlen = (u16)~skb->len;
         __skb_pull(skb, thlen);
 
+        mss = skb_shinfo(skb)->gso_size;
+        if (unlikely(skb->len <= mss))
+                goto out;
+
         if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
                 /* Packet is from an untrusted source, reset gso_segs. */
                 int type = skb_shinfo(skb)->gso_type;
-                int mss;
 
                 if (unlikely(type &
                              ~(SKB_GSO_TCPV4 |
@@ -2419,7 +2422,6 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
                              !(type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))))
                         goto out;
 
-                mss = skb_shinfo(skb)->gso_size;
                 skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(skb->len, mss);
 
                 segs = NULL;
@@ -2430,8 +2432,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
         if (IS_ERR(segs))
                 goto out;
 
-        len = skb_shinfo(skb)->gso_size;
-        delta = htonl(oldlen + (thlen + len));
+        delta = htonl(oldlen + (thlen + mss));
 
         skb = segs;
         th = tcp_hdr(skb);
@@ -2447,7 +2448,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
                              csum_fold(csum_partial(skb_transport_header(skb),
                                                     thlen, skb->csum));
 
-                seq += len;
+                seq += mss;
                 skb = skb->next;
                 th = tcp_hdr(skb);