video-vga.c:undefined reference to `__gcov_init'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4935e04ef431c7980ba6e8145ad4c697abccf6b9
commit: cb984d101b30eb7478d32df56a0023e4603cba7f compiler-gcc: integrate the various compiler-gcc[345].h files
date:   1 year, 2 months ago
config: x86_64-rhel_gcov (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        git checkout cb984d101b30eb7478d32df56a0023e4603cba7f
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86/realmode/rm/video-vga.o:(.data+0x150): undefined reference to `__gcov_merge_add'
   arch/x86/realmode/rm/video-vga.o: In function `_GLOBAL__sub_I_65535_0_vga_crtc':
>> video-vga.c:(.text.startup+0x7): undefined reference to `__gcov_init'
   arch/x86/realmode/rm/wakemain.o:(.data+0x70): undefined reference to `__gcov_merge_add'
   arch/x86/realmode/rm/wakemain.o: In function `_GLOBAL__sub_I_65535_0_main':
>> wakemain.c:(.text.startup+0x1f4): undefined reference to `__gcov_init'
   arch/x86/realmode/rm/video-mode.o:(.data+0x90): undefined reference to `__gcov_merge_add'
   arch/x86/realmode/rm/video-mode.o: In function `_GLOBAL__sub_I_65535_0_probe_cards':
>> video-mode.c:(.text.startup+0x7): undefined reference to `__gcov_init'
   arch/x86/realmode/rm/regs.o:(.data+0x30): undefined reference to `__gcov_merge_add'
   arch/x86/realmode/rm/regs.o: In function `_GLOBAL__sub_I_65535_0_initregs':
>> regs.c:(.text.startup+0x7): undefined reference to `__gcov_init'
   arch/x86/realmode/rm/video-vesa.o:(.data+0x70): undefined reference to `__gcov_merge_add'
   arch/x86/realmode/rm/video-vesa.o: In function `_GLOBAL__sub_I_65535_0_video_vesa.c':
>> video-vesa.c:(.text.startup+0x7): undefined reference to `__gcov_init'
   arch/x86/realmode/rm/video-bios.o:(.data+0x90): undefined reference to `__gcov_merge_add'
   arch/x86/realmode/rm/video-bios.o: In function `_GLOBAL__sub_I_65535_0_video_bios.c':
>> video-bios.c:(.text.startup+0x7): undefined reference to `__gcov_init'

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