netdev - Re: [PATCH 1/3] bpf: add helper to check for a valid SYN cookie

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Message-ID: <201902241942.5vzHD2KL%fengguang.wu@intel.com>
Date:   Sun, 24 Feb 2019 19:37:38 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Lorenz Bauer <lmb@...udflare.com>
Cc:     kbuild-all@...org, ast@...nel.org, daniel@...earbox.net,
        netdev@...r.kernel.org, linux-api@...r.kernel.org,
        Lorenz Bauer <lmb@...udflare.com>
Subject: Re: [PATCH 1/3] bpf: add helper to check for a valid SYN cookie

Hi Lorenz,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on bpf-next/master]
[also build test ERROR on next-20190222]
[cannot apply to v5.0-rc4]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Lorenz-Bauer/Allow-checking-SYN-cookies-from-XDP-and-tc-cls-act/20190224-180755
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: m68k-sun3_defconfig (attached as .config)
compiler: m68k-linux-gnu-gcc (Debian 8.2.0-11) 8.2.0
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=8.2.0 make.cross ARCH=m68k 

All errors (new ones prefixed by >>):

   m68k-linux-gnu-ld: drivers/rtc/proc.o: in function `is_rtc_hctosys.isra.0':
   proc.c:(.text+0x178): undefined reference to `strcmp'
   m68k-linux-gnu-ld: net/core/filter.o: in function `bpf_sk_check_syncookie':
>> filter.c:(.text+0x5a58): undefined reference to `__cookie_v6_check'

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

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