Hi Loïc, kernel test robot noticed the following build errors:
[auto build test ERROR on drm-misc/drm-misc-next] [also build test ERROR on linus/master v6.17 next-20250929] [cannot apply to akpm-mm/mm-everything] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Lo-c-Molinari/drm-shmem-helper-Add-huge-page-fault-handler/20250930-040600 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20250929200316.18417-3-loic.molinari%40collabora.com patch subject: [PATCH 2/8] drm/gem: Introduce drm_gem_get_unmapped_area() fop config: arm-randconfig-002-20250930 (https://download.01.org/0day-ci/archive/20250930/[email protected]/config) compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250930/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All errors (new ones prefixed by >>): drivers/gpu/drm/drm_gem.c: In function 'drm_gem_get_unmapped_area': >> drivers/gpu/drm/drm_gem.c:1280:9: error: implicit declaration of function >> 'mm_get_unmapped_area'; did you mean 'shmem_get_unmapped_area'? >> [-Werror=implicit-function-declaration] return mm_get_unmapped_area(current->mm, filp, uaddr, len, 0, flags); ^~~~~~~~~~~~~~~~~~~~ shmem_get_unmapped_area cc1: some warnings being treated as errors vim +1280 drivers/gpu/drm/drm_gem.c 1238 1239 /** 1240 * drm_gem_get_unmapped_area - get memory mapping region routine for GEM objects 1241 * @filp: DRM file pointer 1242 * @uaddr: User address hint 1243 * @len: Mapping length 1244 * @pgoff: Offset (in pages) 1245 * @flags: Mapping flags 1246 * 1247 * If a driver supports GEM object mapping, before ending up in drm_gem_mmap(), 1248 * mmap calls on the DRM file descriptor will first try to find a free linear 1249 * address space large enough for a mapping. Since GEM objects are backed by 1250 * shmem buffers, this should preferably be handled by the shmem virtual memory 1251 * filesystem which can appropriately align addresses to huge page sizes when 1252 * needed. 1253 * 1254 * Look up the GEM object based on the offset passed in (vma->vm_pgoff will 1255 * contain the fake offset we created) and call shmem_get_unmapped_area() with 1256 * the right file pointer. 1257 * 1258 * If a GEM object is not available at the given offset or if the caller is not 1259 * granted access to it, fall back to mm_get_unmapped_area(). 1260 */ 1261 unsigned long drm_gem_get_unmapped_area(struct file *filp, unsigned long uaddr, 1262 unsigned long len, unsigned long pgoff, 1263 unsigned long flags) 1264 { 1265 #ifdef CONFIG_TRANSPARENT_HUGEPAGE 1266 struct drm_gem_object *obj; 1267 unsigned long ret; 1268 1269 obj = drm_gem_object_lookup_from_offset(filp, pgoff, len >> PAGE_SHIFT); 1270 if (IS_ERR(obj)) 1271 return mm_get_unmapped_area(current->mm, filp, uaddr, len, 0, 1272 flags); 1273 1274 ret = shmem_get_unmapped_area(obj->filp, uaddr, len, 0, flags); 1275 1276 drm_gem_object_put(obj); 1277 1278 return ret; 1279 #else > 1280 return mm_get_unmapped_area(current->mm, filp, uaddr, len, 0, > flags); 1281 #endif 1282 } 1283 EXPORT_SYMBOL(drm_gem_get_unmapped_area); 1284 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
