Re: [PATCH net-next v4 1/2] New kernel function to get IP overhead on a socket.

[kbuild test robot <lkp@intel.com>]

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Hi Parameswaran,

[auto build test WARNING on net-next/master]

url:    https://github.com/0day-ci/linux/commits/R-Parameswaran/New-kernel-function-to-get-IP-overhead-on-a-socket/20170324-065003
config: x86_64-randconfig-s1-03240701 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   net/socket.c: In function 'kernel_sock_ip_overhead':
>> net/socket.c:3359: warning: unused variable 'optv6'
>> net/socket.c:3357: warning: unused variable 'np'

vim +/optv6 +3359 net/socket.c

  3351	 * this is an IPv4 or IPv6 socket and the length from IP options turned
  3352	 * on at the socket.
  3353	 */
  3354	u32 kernel_sock_ip_overhead(struct sock *sk)
  3355	{
  3356		struct inet_sock *inet;
> 3357		struct ipv6_pinfo *np;
  3358		struct ip_options_rcu *opt;
> 3359		struct ipv6_txoptions *optv6 = NULL;
  3360		u32 overhead = 0;
  3361		bool owned_by_user;
  3362	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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