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! Perhaps something to improve:

[auto build test WARNING 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: i386-randconfig-a006 (https://download.01.org/0day-ci/archive/20230331/202303311022.2GVz6yAt-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash net/ipv4/

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/202303311022.2GVz6yAt-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> net/ipv4/udp.c:2986:20: warning: function 'seq_sk_match' has internal linkage but is not defined [-Wundefined-internal]
   static inline bool seq_sk_match(struct seq_file *seq, const struct sock *sk);
                      ^
   net/ipv4/udp.c:3015:8: note: used here
                           if (seq_sk_match(seq, sk))
                               ^
   1 warning generated.


vim +/seq_sk_match +2986 net/ipv4/udp.c

  2985	
> 2986	static inline bool seq_sk_match(struct seq_file *seq, const struct sock *sk);
  2987	

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