netdev - Re: [PATCH v2 net 13/17] net: Fix data-races around sysctl_fb_tunnels_only_for_init

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Date:   Thu, 18 Aug 2022 16:51:37 +0800
From:   kernel test robot <lkp@...el.com>
To:     Kuniyuki Iwashima <kuniyu@...zon.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        netdev@...r.kernel.org, Kuniyuki Iwashima <kuniyu@...zon.com>
Subject: Re: [PATCH v2 net 13/17] net: Fix data-races around
 sysctl_fb_tunnels_only_for_init_net.

Hi Kuniyuki,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/net-sysctl-Fix-data-races-around-net-core-XXX/20220818-115941
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git fc4aaf9fb3c99bcb326d52f9d320ed5680bd1cee
config: riscv-randconfig-r032-20220818 (https://download.01.org/0day-ci/archive/20220818/202208181615.Lu9xjiEv-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project aed5e3bea138ce581d682158eb61c27b3cfdd6ec)
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
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # https://github.com/intel-lab-lkp/linux/commit/6bc3dfb3dc4862f4e00ba93c45cd5c0251b85d5b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Kuniyuki-Iwashima/net-sysctl-Fix-data-races-around-net-core-XXX/20220818-115941
        git checkout 6bc3dfb3dc4862f4e00ba93c45cd5c0251b85d5b
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash

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

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: sysctl_fb_tunnels_only_for_init_net
   >>> referenced by ip_tunnel.c
   >>>               ipv4/ip_tunnel.o:(ip_tunnel_init_net) in archive net/built-in.a
   >>> referenced by ip_tunnel.c
   >>>               ipv4/ip_tunnel.o:(ip_tunnel_init_net) in archive net/built-in.a

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp