Hi NeilBrown, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on nfsd/nfsd-next] [also build test WARNING on nfs/linux-next v5.7-rc6 next-20200519] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/NeilBrown/SUNRPC-svc-fix-gss-flavour-registration-problems/20200521-112443 base: git://linux-nfs.org/~bfields/linux.git nfsd-next config: arm-randconfig-r035-20200521 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b) reproduce: 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): >> net/sunrpc/svcauth.c:209:6: warning: no previous prototype for function 'auth_domain_cleanup' [-Wmissing-prototypes] void auth_domain_cleanup(void) ^ net/sunrpc/svcauth.c:209:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void auth_domain_cleanup(void) ^ static 1 warning generated. vim +/auth_domain_cleanup +209 net/sunrpc/svcauth.c 208 > 209 void auth_domain_cleanup(void) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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