tree: https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git arm64/set_fs-removal head: 670f25a8d0e17795ab49689a2bb8381755b9ec0c commit: bb1b4161c9f4ac72305d39119e5a57d538375d5c [1/8] arm64/sdei: don't reuse orig_addr_limit config: x86_64-randconfig-r002-20200921 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 4e8c028158b56d9c2142a62464e8e0686bde3584) 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 git checkout bb1b4161c9f4ac72305d39119e5a57d538375d5c # 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 errors (new ones prefixed by >>): In file included from drivers/acpi/apei/ghes.c:20: #include <asm/sdei.h> ^~~~~~~~~~~~ 1 error generated. # https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git/commit/?id... git remote add mark-rutland https://git.kernel.org/pub/scm/linux/kernel/git/mark/linux.git git fetch --no-tags mark-rutland arm64/set_fs-removal git checkout bb1b4161c9f4ac72305d39119e5a57d538375d5c vim +10 include/linux/arm_sdei.h f9f05395f384ee8 James Morse 2019-01-29 9 ad6eb31ef903559 James Morse 2018-01-08 @10 #include <asm/sdei.h> ad6eb31ef903559 James Morse 2018-01-08 11 :::::: The code at line 10 was first introduced by commit :::::: ad6eb31ef90355993eb55ff77e0e855ae7d91e4c firmware: arm_sdei: Add driver for Software Delegated Exceptions :::::: TO: James Morse <james.morse(a)arm.com&gt; :::::: CC: Catalin Marinas <catalin.marinas(a)arm.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org