linux-kernel - Re: [PATCH v2 bpf-next 10/13] bpf: Add instructions for atomic[64]_[fetch

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Message-ID: <202011280519.anTnUCeP-lkp@intel.com>
Date:   Sat, 28 Nov 2020 05:39:50 +0800
From:   kernel test robot <lkp@...el.com>
To:     Brendan Jackman <jackmanb@...gle.com>, bpf@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, Alexei Starovoitov <ast@...nel.org>,
        Yonghong Song <yhs@...com>,
        Daniel Borkmann <daniel@...earbox.net>,
        KP Singh <kpsingh@...omium.org>,
        Florent Revest <revest@...omium.org>,
        linux-kernel@...r.kernel.org, Jann Horn <jannh@...gle.com>,
        Brendan Jackman <jackmanb@...gle.com>
Subject: Re: [PATCH v2 bpf-next 10/13] bpf: Add instructions for
 atomic[64]_[fetch_]sub

Hi Brendan,

Thank you for the patch! Perhaps something to improve:

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

url:    https://github.com/0day-ci/linux/commits/Brendan-Jackman/Atomics-for-eBPF/20201128-020057
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-s001-20201127 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.3-151-g540c2c4b-dirty
        # https://github.com/0day-ci/linux/commit/8b1823a5cf4569c72046175d217e3e2ad68c6a05
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Brendan-Jackman/Atomics-for-eBPF/20201128-020057
        git checkout 8b1823a5cf4569c72046175d217e3e2ad68c6a05
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


"sparse warnings: (new ones prefixed by >>)"
>> kernel/bpf/disasm.c:83:12: sparse: sparse: symbol 'bpf_atomic_alu_string' was not declared. Should it be static?

Please review and possibly fold the followup patch.

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (33688 bytes)