tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git mm/apply-to-page-range
head:   ed1bcdc45a7d39bc0009d77fcf4f148a1ade074c
commit: 9579c63fc83b70a07d166e51b3f431b5099611f6 [7/8] mm: Unexport apply_to_page_range()
config: x86_64-rhel-8.3-kselftests (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/peterz/queue.git/commit/?id=9579c63fc83b70a07d166e51b3f431b5099611f6
        git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
        git fetch --no-tags peterz-queue mm/apply-to-page-range
        git checkout 9579c63fc83b70a07d166e51b3f431b5099611f6
        # save the attached .config to linux build tree
        make W=1 W=1 ARCH=x86_64 

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 >>, old ones prefixed by <<):

>> ERROR: modpost: "apply_to_page_range" [drivers/gpu/drm/i915/i915.ko] undefined!

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