tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git dev-queue head: e5a10a0b92ece69461f51d038ca6a34d96f340d0 commit: cb1bd37680e5a58b8e65e53dc5a4ddb4686ef3ea [8/52] i40e: optimise prefetch page refcount config: arm-randconfig-r024-20200818 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 790878f291fa5dc58a1c560cb6cc76fd1bfd1c5a) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi git checkout cb1bd37680e5a58b8e65e53dc5a4ddb4686ef3ea # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 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/gpu/drm/tilcdc/tilcdc_plane.c:7: In file included from include/drm/drm_atomic.h:31: In file included from include/drm/drm_crtc.h:28: In file included from include/linux/i2c.h:13: In file included from include/linux/acpi.h:13: In file included from include/linux/irqdomain.h:35: In file included from include/linux/of.h:15: In file included from include/linux/bitops.h:29: In file included from arch/arm/include/asm/bitops.h:243: In file included from include/asm-generic/bitops/lock.h:5: In file included from include/linux/atomic.h:7: In file included from arch/arm/include/asm/atomic.h:12: static inline void prefetch_page_address(struct page *page) ^ 1 error generated. # https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git/c... git remote add jkirsher-next-queue https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/next-queue.git git fetch --no-tags jkirsher-next-queue dev-queue git checkout cb1bd37680e5a58b8e65e53dc5a4ddb4686ef3ea vim +65 include/linux/prefetch.h 64 66 { 67 #if defined(WANT_PAGE_VIRTUAL) || defined(HASHED_PAGE_VIRTUAL) 68 prefetch(page); 69 #endif 70 } 71 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org