Hi Chuck, I love your patch! Yet something to improve: [auto build test ERROR on nfs/linux-next] [also build test ERROR on linus/master v5.14-rc5 next-20210810] [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/Chuck-Lever/SunRPC-fault-injecti... base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next config: xtensa-nommu_kc705_defconfig (attached as .config) compiler: xtensa-de212-linux-gcc (GCC) 10.3.0 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/fe621cd68ac79d864276194e88bf13845... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Chuck-Lever/SunRPC-fault-injection/20210811-050828 git checkout fe621cd68ac79d864276194e88bf1384505db10b # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross ARCH=xtensa 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 >>): net/sunrpc/debugfs.c: In function 'sunrpc_debugfs_init': 346 | fail_sunrpc_init(); | ^~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +/fail_sunrpc_init +346 net/sunrpc/debugfs.c 329 330 void __init 331 sunrpc_debugfs_init(void) 332 { 333 struct dentry *rpc_fault_dir; 334 335 topdir = debugfs_create_dir("sunrpc", NULL); 336 337 rpc_clnt_dir = debugfs_create_dir("rpc_clnt", topdir); 338 339 rpc_xprt_dir = debugfs_create_dir("rpc_xprt", topdir); 340 341 rpc_fault_dir = debugfs_create_dir("inject_fault", topdir); 342 343 debugfs_create_file("disconnect", S_IFREG | 0400, rpc_fault_dir, NULL, 344 &fault_disconnect_fops); 345 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org