Hi Chengen, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on trondmy-nfs/linux-next] [also build test WARNING on linus/master v6.1 next-20221213] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Chengen-Du/NFS-fix-client-permission-error-after-adding-user-to-permissible-group/20221213-180531 base: git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next patch link: https://lore.kernel.org/r/20221213100241.254681-1-chengen.du%40canonical.com patch subject: [PATCH] NFS: fix client permission error after adding user to permissible group config: arc-defconfig compiler: arc-elf-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/7206036f9265a95f957d3f58a973c9ab27979284 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Chengen-Du/NFS-fix-client-permission-error-after-adding-user-to-permissible-group/20221213-180531 git checkout 7206036f9265a95f957d3f58a973c9ab27979284 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arc SHELL=/bin/bash fs/nfs/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> fs/nfs/dir.c:2937:26: warning: no previous prototype for 'nfs_access_search_rbtree' [-Wmissing-prototypes] 2937 | struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, const struct cred *cred) | ^~~~~~~~~~~~~~~~~~~~~~~~ -- fs/nfs/inode.c: In function 'nfs_update_inode': fs/nfs/inode.c:2186:33: error: implicit declaration of function 'nfs_access_search_rbtree' [-Werror=implicit-function-declaration] 2186 | cache = nfs_access_search_rbtree(inode, cred); | ^~~~~~~~~~~~~~~~~~~~~~~~ >> fs/nfs/inode.c:2186:31: warning: assignment to 'struct nfs_access_entry *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 2186 | cache = nfs_access_search_rbtree(inode, cred); | ^ cc1: some warnings being treated as errors vim +/nfs_access_search_rbtree +2937 fs/nfs/dir.c 2936 > 2937 struct nfs_access_entry *nfs_access_search_rbtree(struct inode *inode, const struct cred *cred) 2938 { 2939 struct rb_node *n = NFS_I(inode)->access_cache.rb_node; 2940 2941 while (n != NULL) { 2942 struct nfs_access_entry *entry = 2943 rb_entry(n, struct nfs_access_entry, rb_node); 2944 int cmp = access_cmp(cred, entry); 2945 2946 if (cmp < 0) 2947 n = n->rb_left; 2948 else if (cmp > 0) 2949 n = n->rb_right; 2950 else 2951 return entry; 2952 } 2953 return NULL; 2954 } 2955 -- 0-DAY CI Kernel Test Service https://01.org/lkp