tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git mm/apply-to-page-range head: 7a18db60d7b306d980044566adff8379f51c782c commit: 370373a6c5aa6ad22cf405257d9d9c5412d98b57 [7/8] mm: Unexport apply_to_page_range() config: i386-randconfig-a001-20210413 (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=370373a6c5aa6ad22cf405257d9d9c5412d98b57 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 370373a6c5aa6ad22cf405257d9d9c5412d98b57 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "apply_to_page_range" [drivers/gpu/drm/i915/i915.ko] undefined! --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org