netdev - Re: [net-next,v1,4/5] seg6: add support for the SRv6 End.DT4 behavior

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Message-Id: <20201106005742.31985db8c30c89e0b0868170@uniroma2.it>
Date:   Fri, 6 Nov 2020 00:57:42 +0100
From:   Andrea Mayer <andrea.mayer@...roma2.it>
To:     "David S. Miller" <davem@...emloft.net>,
        David Ahern <dsahern@...nel.org>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Shrijeet Mukherjee <shrijeet@...il.com>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        kbuild-all@...ts.01.org, netdev@...r.kernel.org
Cc:     Stefano Salsano <stefano.salsano@...roma2.it>,
        Paolo Lungaroni <paolo.lungaroni@...t.it>,
        Ahmed Abdelsalam <ahabdels.dev@...il.com>,
        Andrea Mayer <andrea.mayer@...roma2.it>
Subject: Re: [net-next,v1,4/5] seg6: add support for the SRv6 End.DT4
 behavior

Hi all,

On Wed, 4 Nov 2020 04:00:10 +0800
kernel test robot <lkp@...el.com> wrote:

> Hi Andrea,
> 
> Thank you for the patch! Perhaps something to improve:
> 
> [auto build test WARNING on ipvs/master]
> [also build test WARNING on linus/master v5.10-rc2 next-20201103]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/Andrea-Mayer/seg6-add-support-for-the-SRv6-End-DT4-behavior/20201103-205553
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master
> config: arc-allyesconfig (attached as .config)
> compiler: arceb-elf-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://github.com/0day-ci/linux/commit/266de8d69af869840a965c080862d6b5ea4a93cd
>         git remote add linux-review https://github.com/0day-ci/linux
>         git fetch --no-tags linux-review Andrea-Mayer/seg6-add-support-for-the-SRv6-End-DT4-behavior/20201103-205553
>         git checkout 266de8d69af869840a965c080862d6b5ea4a93cd
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@...el.com>
> 
> All warnings (new ones prefixed by >>):
> 
>    net/ipv6/seg6_local.c:793:4: error: 'struct seg6_action_desc' has no member named 'slwt_ops'
>      793 |   .slwt_ops = {
>          |    ^~~~~~~~

I spent some time figuring out what happened with this patch. It seems that the
patchset was not applied by the kernel test robot in the correct order. In
particular, patch 3 is missing from this build attempt.

I applied one patch after another in the correct order and, each time, I was
able to compile the kernel (C=1 W=1) successfully with the .config file provided
by the robot.

Thanks,
Andrea