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Re: [PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto

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Hi,

[auto build test ERROR on next-20160621]

url:    https://github.com/0day-ci/linux/commits/Martin-KaFai-Lau/cgroup-bpf-cgroup2-membership-test-on-skb/20160622-082800
config: i386-randconfig-s1-201625 (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All error/warnings (new ones prefixed by >>):

   net/core/filter.c: In function 'bpf_skb_in_cgroup':
>> net/core/filter.c:2049:30: error: implicit declaration of function 'sock_cgroup_ptr' [-Werror=implicit-function-declaration]
     return cgroup_is_descendant(sock_cgroup_ptr(&sk->sk_cgrp_data), cgrp);
                                 ^~~~~~~~~~~~~~~
>> net/core/filter.c:2049:30: warning: passing argument 1 of 'cgroup_is_descendant' makes pointer from integer without a cast [-Wint-conversion]
   In file included from include/net/netprio_cgroup.h:17:0,
                    from include/linux/netdevice.h:48,
                    from net/core/filter.c:31:
   include/linux/cgroup.h:492:20: note: expected 'struct cgroup *' but argument is of type 'int'
    static inline bool cgroup_is_descendant(struct cgroup *cgrp,
                       ^~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/sock_cgroup_ptr +2049 net/core/filter.c

  2043			return -E2BIG;
  2044	
  2045		cgrp = READ_ONCE(array->ptrs[i]);
  2046		if (unlikely(!cgrp))
  2047			return -ENOENT;
  2048	
> 2049		return cgroup_is_descendant(sock_cgroup_ptr(&sk->sk_cgrp_data), cgrp);
  2050	}
  2051	
  2052	static const struct bpf_func_proto bpf_skb_in_cgroup_proto = {

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

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[PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto Martin KaFai Lau <kafai@fb.com> - 2016-06-22 02:30 +0200
  Re: [PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-06-22 03:30 +0200
    Re: [PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto Martin KaFai Lau <kafai@fb.com> - 2016-06-22 08:30 +0200
  Re: [PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto kbuild test robot <lkp@intel.com> - 2016-06-22 03:30 +0200
  Re: [PATCH -next 3/4] cgroup: bpf: Add bpf_skb_in_cgroup_proto kbuild test robot <lkp@intel.com> - 2016-06-22 04:30 +0200

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