* Re: [PATCH 2/8] drm/fdinfo: Switch to idr_for_each() in drm_show_memory_stats()
[not found] <20250528091307.1894940-3-simona.vetter@ffwll.ch>
@ 2025-05-28 20:10 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-05-28 20:10 UTC (permalink / raw)
To: Simona Vetter, DRI Development
Cc: llvm, oe-kbuild-all, intel-xe, Simona Vetter, Rob Clark,
Emil Velikov, Tvrtko Ursulin, stable
Hi Simona,
kernel test robot noticed the following build warnings:
[auto build test WARNING on next-20250527]
[also build test WARNING on linus/master v6.15]
[cannot apply to v6.15 v6.15-rc7 v6.15-rc6]
[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/Simona-Vetter/drm-gem-Fix-race-in-drm_gem_handle_create_tail/20250528-171524
base: next-20250527
patch link: https://lore.kernel.org/r/20250528091307.1894940-3-simona.vetter%40ffwll.ch
patch subject: [PATCH 2/8] drm/fdinfo: Switch to idr_for_each() in drm_show_memory_stats()
config: riscv-randconfig-001-20250529 (https://download.01.org/0day-ci/archive/20250529/202505290334.GjoY9qsk-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project f819f46284f2a79790038e1f6649172789734ae8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250529/202505290334.GjoY9qsk-lkp@intel.com/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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202505290334.GjoY9qsk-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/drm_file.c:916:3: warning: variable 'drm_data' is uninitialized when used here [-Wuninitialized]
916 | drm_data->supported_status |= s;
| ^~~~~~~~
drivers/gpu/drm/drm_file.c:903:36: note: initialize the variable 'drm_data' to silence this warning
903 | struct drm_bo_print_data *drm_data;
| ^
| = NULL
1 warning generated.
vim +/drm_data +916 drivers/gpu/drm/drm_file.c
899
900 static int
901 drm_bo_memory_stats(int id, void *ptr, void *data)
902 {
903 struct drm_bo_print_data *drm_data;
904 struct drm_gem_object *obj = ptr;
905 enum drm_gem_object_status s = 0;
906 size_t add_size;
907
908 if (!obj)
909 return 0;
910
911 add_size = (obj->funcs && obj->funcs->rss) ?
912 obj->funcs->rss(obj) : obj->size;
913
914 if (obj->funcs && obj->funcs->status) {
915 s = obj->funcs->status(obj);
> 916 drm_data->supported_status |= s;
917 }
918
919 if (drm_gem_object_is_shared_for_memory_stats(obj))
920 drm_data->status.shared += obj->size;
921 else
922 drm_data->status.private += obj->size;
923
924 if (s & DRM_GEM_OBJECT_RESIDENT) {
925 drm_data->status.resident += add_size;
926 } else {
927 /* If already purged or not yet backed by pages, don't
928 * count it as purgeable:
929 */
930 s &= ~DRM_GEM_OBJECT_PURGEABLE;
931 }
932
933 if (!dma_resv_test_signaled(obj->resv, dma_resv_usage_rw(true))) {
934 drm_data->status.active += add_size;
935 drm_data->supported_status |= DRM_GEM_OBJECT_ACTIVE;
936
937 /* If still active, don't count as purgeable: */
938 s &= ~DRM_GEM_OBJECT_PURGEABLE;
939 }
940
941 if (s & DRM_GEM_OBJECT_PURGEABLE)
942 drm_data->status.purgeable += add_size;
943
944 return 0;
945 }
946
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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