From: Willem de Bruijn <willemb@google.com>
Date: Mon, 1 Dec 2014 03:22:33 +0000 (-0500)
Subject: ipv4: warn once on passing AF_INET6 socket to ip_recv_error
X-Git-Tag: firefly_0821_release~176^2~2717^2~92^2~2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7ce875e5ecb8562fd44040f69bda96c999e38bbc;p=firefly-linux-kernel-4.4.55.git

ipv4: warn once on passing AF_INET6 socket to ip_recv_error

One line change, in response to catching an occurrence of this bug.
See also fix f4713a3dfad0 ("net-timestamp: make tcp_recvmsg call ...")

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
index b7826575d215..59eba6c7a512 100644
--- a/net/ipv4/ip_sockglue.c
+++ b/net/ipv4/ip_sockglue.c
@@ -414,6 +414,8 @@ int ip_recv_error(struct sock *sk, struct msghdr *msg, int len, int *addr_len)
 	int err;
 	int copied;
 
+	WARN_ON_ONCE(sk->sk_family == AF_INET6);
+
 	err = -EAGAIN;
 	skb = sock_dequeue_err_skb(sk);
 	if (skb == NULL)