netdev - Re: [PATCH net-next v2 2/2] Add a eBPF helper function to retrieve socket uid

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Date:   Mon, 6 Feb 2017 10:48:31 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Chenbo Feng <chenbofeng.kernel@...il.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        Alexei Starovoitov <ast@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Lorenzo Colitti <lorenzo@...gle.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Chenbo Feng <fengc@...gle.com>,
        Chenbo Feng <chenbofeng.kernel@...il.com>
Subject: Re: [PATCH net-next v2 2/2] Add a eBPF helper function to retrieve
 socket uid

Hi Chenbo,

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

url:    https://github.com/0day-ci/linux/commits/Chenbo-Feng/Two-Helper-function-about-socket-information/20170206-102835
config: x86_64-randconfig-x014-201706 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   net/core/filter.c: In function '____bpf_get_socket_uid':
>> net/core/filter.c:2618:29: error: 'net' undeclared (first use in this function)
     kuid_t kuid = sock_net_uid(net, sk && sk_fullsock(sk) ?
                                ^~~
   net/core/filter.c:2618:29: note: each undeclared identifier is reported only once for each function it appears in

vim +/net +2618 net/core/filter.c

  2612		.arg1_type      = ARG_PTR_TO_CTX,
  2613	};
  2614	
  2615	BPF_CALL_1(bpf_get_socket_uid, struct sk_buff *, skb)
  2616	{
  2617		struct sock *sk = skb->sk;
> 2618		kuid_t kuid = sock_net_uid(net, sk && sk_fullsock(sk) ?
  2619					   sk : NULL);
  2620		return (u32)kuid.val;
  2621	}

---
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