tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4 head: 7dbe002cedde007cf4d8924e44bae4228692a153 commit: 36ceb53293c54a1519a0212af6cd1929912bef14 [7/31] UPSTREAM: thermal: int340x: processor_thermal: Add Tiger Lake support config: s390-randconfig-r021-20200607 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project e429cffd4f228f70c1d9df0e5d77c08590dd9766) 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 # install s390 cross compiling tool for clang build # apt-get install binutils-s390-linux-gnu git checkout 36ceb53293c54a1519a0212af6cd1929912bef14 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Note: the chrome-os/chromeos-5.4 HEAD 7dbe002cedde007cf4d8924e44bae4228692a153 builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>, old ones prefixed by <<): /tmp/page_isolation-899922.s: Assembler messages: clang-11: error: assembler command failed with exit code 1 (use -v to see invocation) --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org