TO: Thomas Gleixner <tglx(a)linutronix.de&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/entry head: be84135ec9e37665f67ce522946652d7c5c74ed9 commit: 303b6bb3285f9eccabd4b02411559ccb1f93fd45 [11/17] x86/entry: Convert system vectors to irq stack macro config: x86_64-randconfig-a012-20210209 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git/commit/?id... git remote add tglx-devel https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git git fetch --no-tags tglx-devel x86/entry git checkout 303b6bb3285f9eccabd4b02411559ccb1f93fd45 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): -- --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org