tree: https://github.com/congwang/linux.git sockmap3 head: b73e57d78e1e62177ef68b9150c4d547f0fd14c0 commit: 4522965795e30d32a526f829846ad6f24cc6a1ea [2/9] af_unix: implement ->psock_update_sk_prot() config: arm-randconfig-r025-20210420 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project ca8eef7e3da8f750d7c7aa004fe426d1d34787ea) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/congwang/linux/commit/4522965795e30d32a526f829846ad6f2... git remote add congwang https://github.com/congwang/linux.git git fetch --no-tags congwang sockmap3 git checkout 4522965795e30d32a526f829846ad6f24cc6a1ea # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): prot->close = sock_map_close; ^~~~~~~~~~~~~~ sk_msg_clone include/linux/skmsg.h:113:5: note: 'sk_msg_clone' declared here int sk_msg_clone(struct sock *sk, struct sk_msg *dst, struct sk_msg *src, ^ 1 error generated. vim +16 net/unix/unix_bpf.c 12 13 static void unix_bpf_rebuild_protos(struct proto *prot, const struct proto *base) 14 { 15 *prot = *base; 17 } 18 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org