tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   62fb9874f5da54fdb243003b386128037319b219
commit: ef3631220d2b3d8d14cf64464760505baa60d6ac net: ks8851: Register MDIO bus and the internal PHY
date:   6 months ago
config: arc-randconfig-r002-20210628 (attached as .config)
compiler: arceb-elf-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=ef3631220d2b3d8d14cf64464760505baa60d6ac
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout ef3631220d2b3d8d14cf64464760505baa60d6ac
        # 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=arc 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 >>):

   arceb-elf-ld: drivers/net/ethernet/micrel/ks8851_common.o: in function `ks8851_probe_common':
   ks8851_common.c:(.text+0x1d2c): undefined reference to `__this_module'
>> arceb-elf-ld: ks8851_common.c:(.text+0x1d2c): undefined reference to `__this_module'

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