linux-kernel - Error: kernelrelease not valid - run 'make prepare' to update it

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Date:   Wed, 11 Aug 2021 11:16:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Masahiro Yamada <masahiroy@...nel.org>
Cc:     clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org, Nathan Chancellor <nathan@...nel.org>
Subject: 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/?id=ba64beb17493a4bfec563100c86a462a15926f24
        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@...el.com>

All errors (new ones prefixed by >>):

>> Error: kernelrelease not valid - run 'make prepare' to update it
--
   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'.
>> Error: kernelrelease not valid - run 'make prepare' to update it
   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

Download attachment ".config.gz" of type "application/gzip" (27723 bytes)