[kbuild-all] Error: kernelrelease not valid - run 'make prepare' to update it

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 9e723c5380c6e14fb91a8b6950563d040674afdb commit: ba64beb17493a4bfec563100c86a462a15926f24 kbuild: check the minimum assembler version in Kconfig date: 4 months ago config: riscv-randconfig-r025-20210810 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project d39ebdae674c8efc84ebe8dc32716ec353220530) 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/torvalds/linux.git/commit... git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout ba64beb17493a4bfec563100c86a462a15926f24 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=riscv prepare 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 >>): -- clang --target=riscv64-linux-gnu -no-integrated-as --prefix=riscv64-linux-gnu- -Werror=unknown-warning-option: unknown assembler invoked scripts/Kconfig.include:50: Sorry, this assembler is not supported. make[3]: *** [scripts/kconfig/Makefile:63: syncconfig] Error 1 make[2]: *** [Makefile:617: syncconfig] Error 2 make[1]: *** [Makefile:726: include/config/auto.conf.cmd] Error 2 make[1]: Failed to remake makefile 'include/config/auto.conf.cmd'. make[1]: Failed to remake makefile 'include/config/auto.conf'. make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:215: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org