[XFRM/RTNETLINK]: Decrement qlen properly in {xfrm_,rt}netlink_rcv().

If we free up a partially processed packet because it's
skb->len dropped to zero, we need to decrement qlen because
we are dropping out of the top-level loop so it will do
the decrement for us.

Spotted by Herbert Xu.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 1 deletions

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index e8740a4a1d78..5ddda2c98af9 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -1024,8 +1024,10 @@ static void xfrm_netlink_rcv(struct sock *sk, int len)
                                 if (skb->len)
                                         skb_queue_head(&sk->sk_receive_queue,
                                                        skb);
-                                else
+                                else {
                                         kfree_skb(skb);
+                                        qlen--;
+                                }
                                 break;
                         }
                         kfree_skb(skb);