Hi Maksym, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm/drm-next] [also build test ERROR on next-20211104] [cannot apply to v5.15] [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] url: https://github.com/0day-ci/linux/commits/Maksym-Wezdecki/drm-virtio-delay-pinning-the-pages-till-first-use/20211102-193430 base: git://anongit.freedesktop.org/drm/drm drm-next config: i386-buildonly-randconfig-r002-20211101 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 264d3b6d4e08401c5b50a85bd76e80b3461d77e6) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/1795d2fd78a334a37a02dba76ac1e314cf122467 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Maksym-Wezdecki/drm-virtio-delay-pinning-the-pages-till-first-use/20211102-193430 git checkout 1795d2fd78a334a37a02dba76ac1e314cf122467 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/gpu/drm/virtio/virtgpu_object.c:254:11: error: variable 'ents' is uninitialized when used here [-Werror,-Wuninitialized] ents, nents); ^~~~ drivers/gpu/drm/virtio/virtgpu_object.c:219:35: note: initialize the variable 'ents' to silence this warning struct virtio_gpu_mem_entry *ents; ^ = NULL >> drivers/gpu/drm/virtio/virtgpu_object.c:254:17: error: variable 'nents' is uninitialized when used here [-Werror,-Wuninitialized] ents, nents); ^~~~~ drivers/gpu/drm/virtio/virtgpu_object.c:220:20: note: initialize the variable 'nents' to silence this warning unsigned int nents; ^ = 0 2 errors generated. vim +/ents +254 drivers/gpu/drm/virtio/virtgpu_object.c 2f2aa13724d568 Gerd Hoffmann 2020-02-07 210 dc5698e80cf724 Dave Airlie 2013-09-09 211 int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, 4441235f9566e6 Gerd Hoffmann 2019-03-18 212 struct virtio_gpu_object_params *params, 530b28426a94b8 Gerd Hoffmann 2019-03-18 213 struct virtio_gpu_object **bo_ptr, 530b28426a94b8 Gerd Hoffmann 2019-03-18 214 struct virtio_gpu_fence *fence) dc5698e80cf724 Dave Airlie 2013-09-09 215 { e2324300f427ff Gerd Hoffmann 2019-08-29 216 struct virtio_gpu_object_array *objs = NULL; c66df701e783bc Gerd Hoffmann 2019-08-29 217 struct drm_gem_shmem_object *shmem_obj; dc5698e80cf724 Dave Airlie 2013-09-09 218 struct virtio_gpu_object *bo; 2f2aa13724d568 Gerd Hoffmann 2020-02-07 219 struct virtio_gpu_mem_entry *ents; 2f2aa13724d568 Gerd Hoffmann 2020-02-07 220 unsigned int nents; dc5698e80cf724 Dave Airlie 2013-09-09 221 int ret; dc5698e80cf724 Dave Airlie 2013-09-09 222 dc5698e80cf724 Dave Airlie 2013-09-09 223 *bo_ptr = NULL; dc5698e80cf724 Dave Airlie 2013-09-09 224 c66df701e783bc Gerd Hoffmann 2019-08-29 225 params->size = roundup(params->size, PAGE_SIZE); c66df701e783bc Gerd Hoffmann 2019-08-29 226 shmem_obj = drm_gem_shmem_create(vgdev->ddev, params->size); c66df701e783bc Gerd Hoffmann 2019-08-29 227 if (IS_ERR(shmem_obj)) c66df701e783bc Gerd Hoffmann 2019-08-29 228 return PTR_ERR(shmem_obj); c66df701e783bc Gerd Hoffmann 2019-08-29 229 bo = gem_to_virtio_gpu_obj(&shmem_obj->base); dc5698e80cf724 Dave Airlie 2013-09-09 230 556c62e85f9b97 Matthew Wilcox 2018-10-30 231 ret = virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle); e2324300f427ff Gerd Hoffmann 2019-08-29 232 if (ret < 0) e2324300f427ff Gerd Hoffmann 2019-08-29 233 goto err_free_gem; e2324300f427ff Gerd Hoffmann 2019-08-29 234 530b28426a94b8 Gerd Hoffmann 2019-03-18 235 bo->dumb = params->dumb; 530b28426a94b8 Gerd Hoffmann 2019-03-18 236 e2324300f427ff Gerd Hoffmann 2019-08-29 237 if (fence) { e2324300f427ff Gerd Hoffmann 2019-08-29 238 ret = -ENOMEM; e2324300f427ff Gerd Hoffmann 2019-08-29 239 objs = virtio_gpu_array_alloc(1); e2324300f427ff Gerd Hoffmann 2019-08-29 240 if (!objs) e2324300f427ff Gerd Hoffmann 2019-08-29 241 goto err_put_id; c66df701e783bc Gerd Hoffmann 2019-08-29 242 virtio_gpu_array_add_obj(objs, &bo->base.base); e2324300f427ff Gerd Hoffmann 2019-08-29 243 e2324300f427ff Gerd Hoffmann 2019-08-29 244 ret = virtio_gpu_array_lock_resv(objs); e2324300f427ff Gerd Hoffmann 2019-08-29 245 if (ret != 0) e2324300f427ff Gerd Hoffmann 2019-08-29 246 goto err_put_objs; e2324300f427ff Gerd Hoffmann 2019-08-29 247 } e2324300f427ff Gerd Hoffmann 2019-08-29 248 897b4d1acaf563 Gerd Hoffmann 2020-09-23 249 if (params->blob) { 3389082bb98296 Vivek Kasireddy 2021-04-12 250 if (params->blob_mem == VIRTGPU_BLOB_MEM_GUEST) 3389082bb98296 Vivek Kasireddy 2021-04-12 251 bo->guest_blob = true; 3389082bb98296 Vivek Kasireddy 2021-04-12 252 897b4d1acaf563 Gerd Hoffmann 2020-09-23 253 virtio_gpu_cmd_resource_create_blob(vgdev, bo, params, 897b4d1acaf563 Gerd Hoffmann 2020-09-23 @254 ents, nents); 897b4d1acaf563 Gerd Hoffmann 2020-09-23 255 } else if (params->virgl) { 30172efbfb842c Gurchetan Singh 2020-09-23 256 virtio_gpu_cmd_resource_create_3d(vgdev, bo, params, 30172efbfb842c Gurchetan Singh 2020-09-23 257 objs, fence); 30172efbfb842c Gurchetan Singh 2020-09-23 258 } else { 1795d2fd78a334 mwezdeck 2021-11-02 259 ret = virtio_gpu_object_shmem_init(vgdev, bo, &ents, &nents); 1795d2fd78a334 mwezdeck 2021-11-02 260 if (ret != 0) { 1795d2fd78a334 mwezdeck 2021-11-02 261 virtio_gpu_array_put_free(objs); 1795d2fd78a334 mwezdeck 2021-11-02 262 virtio_gpu_free_object(&shmem_obj->base); 1795d2fd78a334 mwezdeck 2021-11-02 263 return ret; 1795d2fd78a334 mwezdeck 2021-11-02 264 } 30172efbfb842c Gurchetan Singh 2020-09-23 265 virtio_gpu_cmd_create_resource(vgdev, bo, params, 30172efbfb842c Gurchetan Singh 2020-09-23 266 objs, fence); c76d4ab764adae Gurchetan Singh 2020-04-01 267 virtio_gpu_object_attach(vgdev, bo, ents, nents); 30172efbfb842c Gurchetan Singh 2020-09-23 268 } dc5698e80cf724 Dave Airlie 2013-09-09 269 dc5698e80cf724 Dave Airlie 2013-09-09 270 *bo_ptr = bo; dc5698e80cf724 Dave Airlie 2013-09-09 271 return 0; e2324300f427ff Gerd Hoffmann 2019-08-29 272 e2324300f427ff Gerd Hoffmann 2019-08-29 273 err_put_objs: e2324300f427ff Gerd Hoffmann 2019-08-29 274 virtio_gpu_array_put_free(objs); e2324300f427ff Gerd Hoffmann 2019-08-29 275 err_put_id: e2324300f427ff Gerd Hoffmann 2019-08-29 276 virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); e2324300f427ff Gerd Hoffmann 2019-08-29 277 err_free_gem: c66df701e783bc Gerd Hoffmann 2019-08-29 278 drm_gem_shmem_free_object(&shmem_obj->base); e2324300f427ff Gerd Hoffmann 2019-08-29 279 return ret; dc5698e80cf724 Dave Airlie 2013-09-09 280 } 1795d2fd78a334 mwezdeck 2021-11-02 281 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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