netdev - Re: [PATCH bpf-next v2 3/3] bpf: add ability to configure BPF JIT kallsyms export at the boot time

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Date:   Sun, 10 Jun 2018 19:42:13 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Eugene Syromiatnikov <esyr@...hat.com>
Cc:     kbuild-all@...org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        Kees Cook <keescook@...omium.org>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Jonathan Corbet <corbet@....net>, Jiri Olsa <jolsa@...nel.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Subject: Re: [PATCH bpf-next v2 3/3] bpf: add ability to configure BPF JIT
 kallsyms export at the boot time

Hi Eugene,

Thank you for the patch! Yet something to improve:

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

url:    https://github.com/0day-ci/linux/commits/Eugene-Syromiatnikov/bpf-add-boot-parameters-for-sysctl-knobs/20180526-164048
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-x074-06101602 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

>> kernel//bpf/core.c:325:38: error: 'CONFIG_BPF_JIT_KALLSYMS_BOOTPARAM_VALUE' undeclared here (not in a function); did you mean 'CONFIG_BPF_JIT_KALLSYMS_BOOTPARAM'?
    int bpf_jit_kallsyms __read_mostly = CONFIG_BPF_JIT_KALLSYMS_BOOTPARAM_VALUE;
                                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                         CONFIG_BPF_JIT_KALLSYMS_BOOTPARAM

vim +325 kernel//bpf/core.c

   323	
   324	#ifdef CONFIG_BPF_JIT_KALLSYMS_BOOTPARAM
 > 325	int bpf_jit_kallsyms __read_mostly = CONFIG_BPF_JIT_KALLSYMS_BOOTPARAM_VALUE;
   326	

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