tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   79160a603bdb51916226caf4a6616cc4e1c58a58
commit: c49f71f60754acbff37505e1d16ca796bf8a8140 MIPS: Reinstate platform `__div64_32' handler
date:   3 months ago
config: mips-randconfig-r036-20210706 (attached as .config)
compiler: mipsel-linux-gcc (GCC) 9.3.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c49f71f60754acbff37505e1d16ca796bf8a8140
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout c49f71f60754acbff37505e1d16ca796bf8a8140
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross O=build_dir ARCH=mips SHELL=/bin/bash

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 >>):

   mipsel-linux-ld: fs/btrfs/super.o: in function `btrfs_statfs':
   super.c:(.text+0xed4): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0xf14): undefined reference to `__umoddi3'
   mipsel-linux-ld: super.c:(.text+0xf6c): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x1050): undefined reference to `__umoddi3'
   mipsel-linux-ld: super.c:(.text+0x1084): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x10a8): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x10f4): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x1114): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x114c): undefined reference to `__udivdi3'
   mipsel-linux-ld: fs/btrfs/super.o:super.c:(.text+0x11c4): more undefined references to `__udivdi3' follow
   mipsel-linux-ld: fs/btrfs/super.o: in function `btrfs_statfs':
>> super.c:(.text+0x13fc): undefined reference to `__umoddi3'
   mipsel-linux-ld: super.c:(.text+0x1454): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x1538): undefined reference to `__umoddi3'
   mipsel-linux-ld: super.c:(.text+0x1570): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x1590): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x15e4): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x1604): undefined reference to `__udivdi3'
   mipsel-linux-ld: super.c:(.text+0x1640): undefined reference to `__udivdi3'
   mipsel-linux-ld: fs/btrfs/super.o:super.c:(.text+0x16b0): more undefined references to `__udivdi3' follow

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