tree:   https://git.kernel.org/pub/scm/linux/kernel/git/djbw/nvdimm.git libnvdimm-pending
head:   91f5d81d2c7bb6dd0733e74204b0515e165f9b7b
commit: ee6db930df5998d0b8681eaf60da85f2b350bba3 [1/3] copy_safe: Rename memcpy_mcsafe() to copy_safe()
config: i386-randconfig-d003-20200428 (attached as .config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce:
        git checkout ee6db930df5998d0b8681eaf60da85f2b350bba3
        # save the attached .config to linux build tree
        make ARCH=i386 

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

All errors (new ones prefixed by >>):

   ld: arch/x86/kernel/cpu/mce/core.o: in function `mcheck_late_init':
>> core.c:(.init.text+0x1b4): undefined reference to `copy_safe_slow_key'

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