Re: [PATCH v5 bpf-next 3/7] udp: seq_file: Helper function to match socket attributes

[kernel test robot <lkp@intel.com>]

Hi Aditi,

Thank you for the patch! Yet something to improve:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Aditi-Ghag/bpf-tcp-Avoid-taking-fast-sock-lock-in-iterator/20230330-232137
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20230330151758.531170-4-aditi.ghag%40isovalent.com
patch subject: [PATCH v5 bpf-next 3/7] udp: seq_file: Helper function to match socket attributes
config: parisc-defconfig (https://download.01.org/0day-ci/archive/20230331/202303310242.QYEDFSaE-lkp@intel.com/config)
compiler: hppa-linux-gcc (GCC) 12.1.0
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/intel-lab-lkp/linux/commit/66cc617bebf6cb3d2162587d6e248d86bc59c1c2
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Aditi-Ghag/bpf-tcp-Avoid-taking-fast-sock-lock-in-iterator/20230330-232137
        git checkout 66cc617bebf6cb3d2162587d6e248d86bc59c1c2
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=parisc SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202303310242.QYEDFSaE-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

>> net/ipv4/udp.c:2986:20: warning: 'seq_sk_match' used but never defined
    2986 | static inline bool seq_sk_match(struct seq_file *seq, const struct sock *sk);
         |                    ^~~~~~~~~~~~
--
   hppa-linux-ld: net/ipv4/udp.o: in function `udp_get_first':
>> (.text+0x11b0): undefined reference to `seq_sk_match'
   hppa-linux-ld: net/ipv4/udp.o: in function `udp_get_next':
   (.text+0x123c): undefined reference to `seq_sk_match'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests