tree: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git 20210908-firmware-builtin-v3 head: 0b2bc4f1e47eaca419882b44793f480e77d716e1 commit: 6d1fa13d8c126b89de21a363eb67262200e502c7 [12/13] x86/microcode: enable which microcode to build into the kernel config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git/com... git remote add mcgrof-next https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux-next.git git fetch --no-tags mcgrof-next 20210908-firmware-builtin-v3 git checkout 6d1fa13d8c126b89de21a363eb67262200e502c7 # save the attached .config to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash 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 >>): arch/x86/kernel/cpu/microcode/builtin/amd/amd-ucode/microcode_amd.bin.gen.S: Assembler messages: -- arch/x86/kernel/cpu/microcode/builtin/amd/amd-ucode/microcode_amd_fam15h.bin.gen.S: Assembler messages: -- arch/x86/kernel/cpu/microcode/builtin/amd/amd-ucode/microcode_amd_fam16h.bin.gen.S: Assembler messages: -- arch/x86/kernel/cpu/microcode/builtin/amd/amd-ucode/microcode_amd_fam17h.bin.gen.S: Assembler messages: --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org