Hi Dmitry, I love your patch! Perhaps something to improve: [auto build test WARNING on next-20220411] [cannot apply to drm/drm-next v5.18-rc2 v5.18-rc1 v5.17 v5.18-rc2] [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/intel-lab-lkp/linux/commits/Dmitry-Osipenko/Add-generic-memory-shrinker-to-VirtIO-GPU-and-Panfrost-DRM-drivers/20220412-060325 base: d12d7e1cfe38e0c36d28c7a9fbbc436ad0d17c14 config: i386-randconfig-a005-20220411 (https://download.01.org/0day-ci/archive/20220412/202204121523.qVMxOvZg-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project fe2478d44e4f7f191c43fef629ac7a23d0251e72) 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/intel-lab-lkp/linux/commit/683ba8a9d72ba7770a61a9266a2b33949f3874f2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Dmitry-Osipenko/Add-generic-memory-shrinker-to-VirtIO-GPU-and-Panfrost-DRM-drivers/20220412-060325 git checkout 683ba8a9d72ba7770a61a9266a2b33949f3874f2 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/drm_gem_shmem_helper.c:289:11: warning: variable 'new_state' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized] else if (shmem->madv < 0) ^~~~~~~~~~~~~~~ drivers/gpu/drm/drm_gem_shmem_helper.c:292:46: note: uninitialized use occurs here drm_gem_shmem_set_pages_state_locked(shmem, new_state); ^~~~~~~~~ drivers/gpu/drm/drm_gem_shmem_helper.c:289:7: note: remove the 'if' if its condition is always true else if (shmem->madv < 0) ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_gem_shmem_helper.c:278:2: note: variable 'new_state' is declared here enum drm_gem_shmem_pages_state new_state; ^ 1 warning generated. vim +289 drivers/gpu/drm/drm_gem_shmem_helper.c 273 274 static void drm_gem_shmem_update_pages_state_locked(struct drm_gem_shmem_object *shmem) 275 { 276 struct drm_gem_object *obj = &shmem->base; 277 struct drm_gem_shmem_shrinker *gem_shrinker = obj->dev->shmem_shrinker; 278 enum drm_gem_shmem_pages_state new_state; 279 280 if (!gem_shrinker || obj->import_attach) 281 return; 282 283 mutex_lock(&gem_shrinker->lock); 284 285 if (!shmem->madv) 286 new_state = DRM_GEM_SHMEM_PAGES_STATE_ACTIVE; 287 else if (shmem->madv > 0) 288 new_state = DRM_GEM_SHMEM_PAGES_STATE_PURGEABLE; > 289 else if (shmem->madv < 0) 290 new_state = DRM_GEM_SHMEM_PAGES_STATE_PURGED; 291 292 drm_gem_shmem_set_pages_state_locked(shmem, new_state); 293 294 mutex_unlock(&gem_shrinker->lock); 295 } 296 -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
