tree: git://git.infradead.org/users/hch/misc.git um-set_fs head: 969a5fb627a0faf0402f8b7e211e1a6398b73736 commit: 969a5fb627a0faf0402f8b7e211e1a6398b73736 [1/1] um: remove set_fs config: um-x86_64_defconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): git remote add hch-misc git://git.infradead.org/users/hch/misc.git git fetch --no-tags hch-misc um-set_fs git checkout 969a5fb627a0faf0402f8b7e211e1a6398b73736 # save the attached .config to linux build tree make W=1 ARCH=um SUBARCH=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 include/linux/uaccess.h:11, from include/linux/sched/task.h:11, from include/linux/sched/signal.h:9, from include/linux/rcuwait.h:6, from include/linux/percpu-rwsem.h:7, from include/linux/fs.h:33, from include/linux/huge_mm.h:8, from include/linux/mm.h:725, from mm/maccess.c:6: mm/maccess.c: In function 'copy_from_kernel_nofault': 53 | *((type *)dst) = get_unaligned((type *)(src)); \ | ^~~~~~~~~~~~~ mm/maccess.c:19:3: note: in expansion of macro '__get_kernel_nofault' 19 | __get_kernel_nofault(dst, src, type, err_label); \ | ^~~~~~~~~~~~~~~~~~~~ mm/maccess.c:31:2: note: in expansion of macro 'copy_from_kernel_nofault_loop' 31 | copy_from_kernel_nofault_loop(dst, src, size, u64, Efault); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ mm/maccess.c: In function 'copy_to_kernel_nofault': 60 | put_unaligned(*((type *)src), (type *)(dst)); \ | ^~~~~~~~~~~~~ mm/maccess.c:45:3: note: in expansion of macro '__put_kernel_nofault' 45 | __put_kernel_nofault(dst, src, type, err_label); \ | ^~~~~~~~~~~~~~~~~~~~ mm/maccess.c:54:2: note: in expansion of macro 'copy_to_kernel_nofault_loop' 54 | copy_to_kernel_nofault_loop(dst, src, size, u64, Efault); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +53 arch/um/include/asm/uaccess.h 50 51 #define __get_kernel_nofault(dst, src, type, err_label) \ 52 do { \ 54 if (0) /* make sure the label looks used to the compiler */ \ 55 goto err_label; \ 56 } while (0) 57 58 #define __put_kernel_nofault(dst, src, type, err_label) \ 59 do { \ 61 if (0) /* make sure the label looks used to the compiler */ \ 62 goto err_label; \ 63 } while (0) 64 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org