Hi NeilBrown, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.17-rc1 next-20220127] [cannot apply to cel-2.6/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/NeilBrown/nfsd-allow-NFSv4-state-to-be-revoked/20220127-130132 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 0280e3c58f92b2fe0e8fbbdf8d386449168de4a8 config: parisc-defconfig (https://download.01.org/0day-ci/archive/20220127/202201272005.vw3QlCL5-lkp@xxxxxxxxx/config) compiler: hppa-linux-gcc (GCC) 11.2.0 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/0day-ci/linux/commit/36a49da0c1204b769399e692f540bf2a6332f89a git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review NeilBrown/nfsd-allow-NFSv4-state-to-be-revoked/20220127-130132 git checkout 36a49da0c1204b769399e692f540bf2a6332f89a # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=parisc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "nfsd4_revoke_states" [fs/nfsd/nfsd.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx