netdev - Re: [PATCH net 1/2] net: add debug info to __skb

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Date:   Thu, 2 Jun 2022 06:01:41 +0800
From:   kernel test robot <lkp@...el.com>
To:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        netdev <netdev@...r.kernel.org>,
        Willem de Bruijn <willemb@...gle.com>,
        Eric Dumazet <edumazet@...gle.com>
Subject: Re: [PATCH net 1/2] net: add debug info to __skb_pull()

Hi Eric,

I love your patch! Yet something to improve:

[auto build test ERROR on net/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Eric-Dumazet/net-af_packet-be-careful-when-expanding-mac-header-size/20220601-030146
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git 09e545f7381459c015b6fa0cd0ac6f010ef8cc25
config: hexagon-randconfig-r002-20220531 (https://download.01.org/0day-ci/archive/20220602/202206020557.QyvlGs0H-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c825abd6b0198fb088d9752f556a70705bc99dfd)
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/intel-lab-lkp/linux/commit/a907c048e7699133feedaa06948c15c719a59f94
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Eric-Dumazet/net-af_packet-be-careful-when-expanding-mac-header-size/20220601-030146
        git checkout a907c048e7699133feedaa06948c15c719a59f94
        # 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=hexagon 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: skb_dump
   >>> referenced by cgroup.c
   >>>               bpf/cgroup.o:(__cgroup_bpf_run_filter_skb) in archive kernel/built-in.a
   >>> referenced by cgroup.c
   >>>               bpf/cgroup.o:(__cgroup_bpf_run_filter_skb) in archive kernel/built-in.a

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