Hi Lawrence,

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

url:    https://github.com/0day-ci/linux/commits/Lawrence-Brakmo/bpf-Adding-support-for-sock_ops/20170701-203039
config: x86_64-randconfig-i0-07010430 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/built-in.o: In function `bpf_setsockopt':

quoted

(.text+0x5bb69): undefined reference to `tcp_setsockopt'

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