tree: https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git misc head: 42e87120aa8e1fc3b67db346fa291bede4c6b2b6 commit: 42e87120aa8e1fc3b67db346fa291bede4c6b2b6 [2/2] nfs: NFSv3: fix SGID bit dropped when inheriting ACLs config: arc-haps_hs_smp_defconfig (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 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://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git/commit/?i... git remote add xiang-linux https://git.kernel.org/pub/scm/linux/kernel/git/xiang/linux.git git fetch --no-tags xiang-linux misc git checkout 42e87120aa8e1fc3b67db346fa291bede4c6b2b6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 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 >>): arc-elf-ld: fs/nfs/nfs3proc.o: in function `nfs3_proc_mkdir': nfs3proc.c:(.text+0xb8e): undefined reference to `get_acl' arc-elf-ld: fs/nfs/nfs3proc.o: in function `nfs3_proc_mknod': nfs3proc.c:(.text+0xf90): undefined reference to `get_acl' arc-elf-ld: nfs3proc.c:(.text+0xf90): undefined reference to `get_acl' arc-elf-ld: fs/nfs/nfs3proc.o: in function `nfs3_proc_create': nfs3proc.c:(.text+0x11a2): undefined reference to `get_acl' arc-elf-ld: fs/nfs/nfs3proc.o:nfs3proc.c:(.text+0x11a2): more undefined references to `get_acl' follow --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org