tree: https://github.com/zen-kernel/zen-kernel 5.10/futex2 head: 65d8ec592b14a8c75ce2a04bfef5a188cd279d00 commit: 4f6d01d9753e7ff0e6ca0ab6082f8b75256cdb57 [1/13] futex2: Implement wait and wake functions config: alpha-randconfig-r014-20210218 (attached as .config) compiler: alpha-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 # https://github.com/zen-kernel/zen-kernel/commit/4f6d01d9753e7ff0e6ca0ab60... git remote add zen-kernel-zen-kernel https://github.com/zen-kernel/zen-kernel git fetch --no-tags zen-kernel-zen-kernel 5.10/futex2 git checkout 4f6d01d9753e7ff0e6ca0ab6082f8b75256cdb57 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=alpha 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] -- arch/alpha/kernel/asm-offsets.c:15:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes] 15 | 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