Re: [PATCH bpf-next] bpf, capabilities: introduce CAP_BPF

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Hi Alexei,

I love your patch! Yet something to improve:

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

url:    https://github.com/0day-ci/linux/commits/Alexei-Starovoitov/bpf-capabilities-introduce-CAP_BPF/20190828-142441
base:   https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: ia64-defconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

   kernel/bpf/core.c: In function 'cap_bpf_tracing':
>> kernel/bpf/core.c:2110:31: error: implicit declaration of function 'perf_paranoid_tracepoint_raw' [-Werror=implicit-function-declaration]
            (capable(CAP_BPF) && !perf_paranoid_tracepoint_raw());
                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/perf_paranoid_tracepoint_raw +2110 kernel/bpf/core.c

  2106	
  2107	bool cap_bpf_tracing(void)
  2108	{
  2109		return capable(CAP_SYS_ADMIN) ||
> 2110		       (capable(CAP_BPF) && !perf_paranoid_tracepoint_raw());
  2111	}
  2112	

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

Attachment: .config.gz
Description: application/gzip


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