CC: linux-kernel(a)vger.kernel.org TO: Peter Zijlstra <peterz(a)infradead.org&gt; tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.sls head: d6e28d35d522980af2fc1311a04d735d94f1df62 commit: d6e28d35d522980af2fc1311a04d735d94f1df62 [3/3] x86: Add straight-line-speculation mitigation config: x86_64-randconfig-c007-20211121 (attached as .config) 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/peterz/queue.git/commit/?... git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git git fetch --no-tags peterz-queue x86/wip.sls git checkout d6e28d35d522980af2fc1311a04d735d94f1df62 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash arch/x86/ 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