tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev
head:   fcdf3c34b7abdcbb49690c94c7fa6ce224dc9749
commit: a6c75eaf11032f4a3d2b3ce2265a194ac6e4a7f0 [13/28] ext4: add mballoc stats proc file
config: um-randconfig-r022-20210412 (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/tytso/ext4.git/commit/?id=a6c75eaf11032f4a3d2b3ce2265a194ac6e4a7f0
        git remote add ext4 https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git
        git fetch --no-tags ext4 dev
        git checkout a6c75eaf11032f4a3d2b3ce2265a194ac6e4a7f0
        # save the attached .config to linux build tree
        make W=1 ARCH=um 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   /usr/bin/ld: kernel/fork.o: in function `mm_init':
   fork.c:(.text+0x1294): undefined reference to `atomic64_set_386'
   /usr/bin/ld: kernel/sched/fair.o: in function `update_curr':
   fair.c:(.text+0xb8a): undefined reference to `atomic64_add_386'
   /usr/bin/ld: kernel/futex.o: in function `get_futex_key':
   futex.c:(.text+0x2900): undefined reference to `atomic64_read_386'
   /usr/bin/ld: futex.c:(.text+0x2a04): undefined reference to `atomic64_add_return_386'
   /usr/bin/ld: futex.c:(.text+0x2a5d): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: mm/debug.o: in function `dump_mm':
   debug.c:(.text+0x542): undefined reference to `atomic64_read_386'
   /usr/bin/ld: mm/z3fold.o: in function `z3fold_zpool_total_size':
   z3fold.c:(.text+0x3c): undefined reference to `atomic64_read_386'
   /usr/bin/ld: mm/z3fold.o: in function `z3fold_zpool_create':
   z3fold.c:(.text+0x36b): undefined reference to `atomic64_set_386'
   /usr/bin/ld: mm/z3fold.o: in function `z3fold_page_putback':
   z3fold.c:(.text+0xd15): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: mm/z3fold.o: in function `z3fold_reclaim_page.constprop.0':
   z3fold.c:(.text+0x108b): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: z3fold.c:(.text+0x1150): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: z3fold.c:(.text+0x157c): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: mm/z3fold.o: in function `z3fold_alloc':
   z3fold.c:(.text+0x1dd2): undefined reference to `atomic64_inc_386'
   /usr/bin/ld: z3fold.c:(.text+0x2270): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: mm/z3fold.o: in function `do_compact_page':
   z3fold.c:(.text+0x250f): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: z3fold.c:(.text+0x2f7a): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: mm/z3fold.o: in function `z3fold_free':
   z3fold.c:(.text+0x3416): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: z3fold.c:(.text+0x3574): undefined reference to `atomic64_dec_386'
   /usr/bin/ld: fs/inode.o: in function `inode_init_always':
   inode.c:(.text+0x5ae): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/inode.o: in function `generic_update_time':
   inode.c:(.text+0x34d2): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x3513): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/inode.o: in function `file_update_time':
   inode.c:(.text+0x43e1): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/namespace.o: in function `alloc_mnt_ns':
   namespace.c:(.text+0x1700): undefined reference to `atomic64_add_return_386'
   /usr/bin/ld: fs/io_uring.o: in function `io_sqe_buffers_unregister.part.0':
   io_uring.c:(.text+0x2bfb): undefined reference to `atomic64_sub_386'
   /usr/bin/ld: fs/io_uring.o: in function `io_sqe_buffers_register':
   io_uring.c:(.text+0x6e4c): undefined reference to `atomic64_add_386'
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_mb_generate_buddy':
   mballoc.c:(.text+0x2839): undefined reference to `atomic64_add_386'
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_mb_mark_diskspace_used':
   mballoc.c:(.text+0x8b81): undefined reference to `atomic64_sub_386'
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_mb_regular_allocator':
>> mballoc.c:(.text+0x99c4): undefined reference to `atomic64_inc_386'
>> /usr/bin/ld: mballoc.c:(.text+0x9d12): undefined reference to `atomic64_inc_386'
   /usr/bin/ld: mballoc.c:(.text+0xa371): undefined reference to `atomic64_inc_386'
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_seq_mb_stats_show':
   mballoc.c:(.text+0xa58b): undefined reference to `atomic64_read_386'
>> /usr/bin/ld: mballoc.c:(.text+0xa5af): undefined reference to `atomic64_read_386'
   /usr/bin/ld: mballoc.c:(.text+0xa5d3): undefined reference to `atomic64_read_386'
   /usr/bin/ld: mballoc.c:(.text+0xa608): undefined reference to `atomic64_read_386'
   /usr/bin/ld: mballoc.c:(.text+0xa62c): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/ext4/mballoc.o:mballoc.c:(.text+0xa650): more undefined references to `atomic64_read_386' follow
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_mb_mark_bb':
   mballoc.c:(.text+0xc558): undefined reference to `atomic64_sub_386'
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_free_blocks':
   mballoc.c:(.text+0xead0): undefined reference to `atomic64_add_386'
   /usr/bin/ld: fs/ext4/mballoc.o: in function `ext4_group_add_blocks':
   mballoc.c:(.text+0xfb01): undefined reference to `atomic64_add_386'
   /usr/bin/ld: fs/ext4/super.o: in function `ext4_statfs':
   super.c:(.text+0x6511): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/ext4/super.o: in function `ext4_alloc_inode':
   super.c:(.text+0x6bfc): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/ext4/super.o: in function `ext4_fill_super':
   super.c:(.text+0x16808): undefined reference to `atomic64_set_386'
   /usr/bin/ld: super.c:(.text+0x16ed8): undefined reference to `atomic64_add_386'
   /usr/bin/ld: fs/ext4/sysfs.o: in function `ext4_attr_store':
   sysfs.c:(.text+0x127): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/ext4/sysfs.o: in function `ext4_attr_show':
   sysfs.c:(.text+0x4d0): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/fat/inode.o: in function `fat_fill_inode':
   inode.c:(.text+0x1d0d): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x1d44): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/fat/inode.o: in function `fat_build_inode':
   inode.c:(.text+0x221d): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/fat/inode.o: in function `fat_fill_super':
   inode.c:(.text+0x29ec): undefined reference to `atomic64_set_386'
   /usr/bin/ld: inode.c:(.text+0x2a28): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x2a82): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/fat/namei_msdos.o: in function `do_msdos_rename':
   namei_msdos.c:(.text+0xf0e): undefined reference to `atomic64_read_386'
   /usr/bin/ld: namei_msdos.c:(.text+0xf68): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: namei_msdos.c:(.text+0x10d7): undefined reference to `atomic64_read_386'
   /usr/bin/ld: namei_msdos.c:(.text+0x1121): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: namei_msdos.c:(.text+0x1496): undefined reference to `atomic64_read_386'
   /usr/bin/ld: namei_msdos.c:(.text+0x14e0): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/ufs/super.o: in function `ufs_alloc_inode':
   super.c:(.text+0x415): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/affs/super.o: in function `affs_alloc_inode':
   super.c:(.text+0x4d5): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/nilfs2/super.o: in function `nilfs_attach_checkpoint':
   super.c:(.text+0x15fd): undefined reference to `atomic64_set_386'
   /usr/bin/ld: super.c:(.text+0x160e): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/nilfs2/super.o: in function `nilfs_statfs.cold':
   super.c:(.text.unlikely+0x11d): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/nilfs2/sysfs.o: in function `nilfs_snapshot_blocks_count_show':
   sysfs.c:(.text+0x35a): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/nilfs2/sysfs.o: in function `nilfs_snapshot_inodes_count_show':
   sysfs.c:(.text+0x392): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/btrfs/super.o: in function `trace_event_raw_event_btrfs_dump_space_info':
   super.c:(.text+0x9e76): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/btrfs/disk-io.o: in function `btrfs_init_fs_info':
   disk-io.c:(.text+0x531e): undefined reference to `atomic64_set_386'
   /usr/bin/ld: disk-io.c:(.text+0x534c): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/btrfs/inode.o: in function `fill_inode_item':
   inode.c:(.text+0x806): undefined reference to `atomic64_read_386'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_read_locked_inode':
   inode.c:(.text+0x1a44): undefined reference to `atomic64_set_386'
   /usr/bin/ld: fs/btrfs/inode.o: in function `__btrfs_unlink_inode':
   inode.c:(.text+0x8b82): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x8bb6): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x8c0b): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x8c3f): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_update_time':
   inode.c:(.text+0x9188): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x91d1): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `__btrfs_prealloc_file_range':
   inode.c:(.text+0x95c7): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x9608): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_unlink_subvol':
   inode.c:(.text+0xdbf7): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0xdc2d): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_add_link':
   inode.c:(.text+0x1327c): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x132b3): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_rename_exchange':
   inode.c:(.text+0x13b1f): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x13b61): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x13bc6): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x13bff): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x13c58): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x13c94): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x13ced): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x13d2f): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_link':
   inode.c:(.text+0x14f4e): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x14f82): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_rename':
   inode.c:(.text+0x157a4): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x157fe): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x15869): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x158c3): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x1592e): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x15988): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: inode.c:(.text+0x16074): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x160ce): undefined reference to `cmpxchg8b_emu'
   /usr/bin/ld: fs/btrfs/inode.o: in function `btrfs_setattr':
   inode.c:(.text+0x19514): undefined reference to `atomic64_read_386'
   /usr/bin/ld: inode.c:(.text+0x1954a): undefined reference to `cmpxchg8b_emu'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org