tree: https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git secretmemfd/v3 head: 807167124581cd8d39ff386e86fb5f138e650e26 commit: 1ffcc5c9d91d24065b6bd72cb6a3d8d4b15fb952 [4/6] arch, mm: wire up memfd_secret system call were relevant config: ia64-randconfig-r033-20200816 (attached as .config) compiler: ia64-linux-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 git checkout 1ffcc5c9d91d24065b6bd72cb6a3d8d4b15fb952 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] -- <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] -- cc1: warning: ./arch/ia64/include/generated: No such file or directory [-Wmissing-include-dirs] cc1: warning: ./arch/ia64/include/generated/uapi: No such file or directory [-Wmissing-include-dirs] cc1: warning: ./include/generated/uapi: No such file or directory [-Wmissing-include-dirs] arch/ia64/kernel/nr-irqs.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 15 | void foo(void) | ^~~ arch/ia64/kernel/asm-offsets.c:23:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 23 | void foo(void) | ^~~ <stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp] --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org