Hi Eric,

[auto build test ERROR on net-next/master -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Eric-Dumazet/net-make-skb_set_owner_w-more-robust/20151102-070107
config: x86_64-randconfig-x019-201544 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/core/sock.c: In function 'skb_set_owner_w':

quoted

net/core/sock.c:1664:21: error: 'sock_edemux' undeclared (first use in this function)

      skb->destructor = sock_edemux;
                        ^
   net/core/sock.c:1664:21: note: each undeclared identifier is reported only once for each function it appears in

vim +/sock_edemux +1664 net/core/sock.c

  1658	
  1659	void skb_set_owner_w(struct sk_buff *skb, struct sock *sk)
  1660	{
  1661		skb_orphan(skb);
  1662		skb->sk = sk;
  1663		if (unlikely(!sk_fullsock(sk))) {

1664			skb->destructor = sock_edemux;

  1665			sock_hold(sk);
  1666			return;
  1667		}

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