Hi Imre, url: https://github.com/0day-ci/linux/commits/Imre-Deak/drm-i915-gen12-Add-dis... base: git://anongit.freedesktop.org/drm-intel for-linux-next config: x86_64-randconfig-m001-20210115 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; Reported-by: Dan Carpenter <dan.carpenter(a)oracle.com&gt; New smatch warnings: drivers/gpu/drm/i915/display/intel_display.c:15299 intel_atomic_prepare_plane_clear_colors() warn: taking sizeof binop vim +15299 drivers/gpu/drm/i915/display/intel_display.c d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15273 static void intel_atomic_prepare_plane_clear_colors(struct intel_atomic_state *state) d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15274 { d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15275 struct drm_device *dev = state->base.dev; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15276 struct drm_i915_private *i915 = to_i915(dev); d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15277 struct intel_plane *plane; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15278 struct intel_plane_state *plane_state; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15279 int i; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15280 d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15281 for_each_new_intel_plane_in_state(state, plane, plane_state, i) { d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15282 struct drm_framebuffer *fb = plane_state->hw.fb; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15283 struct drm_i915_gem_object *obj; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15284 int ret; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15285 d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15286 if (!fb || d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15287 fb->modifier != I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC) d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15288 continue; d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15289 d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15290 obj = intel_fb_obj(fb); d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15291 /* d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15292 * The layout of the fast clear color value expected by HW: d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15293 * - 4 x 4 bytes per-channel value (in surface type specific float/int format) d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15294 * - 8 bytes native color value used by the display (converted/written by GPU during d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15295 * a fast clear operation using the above per-channel values) d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15296 */ d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15297 ret = i915_gem_object_read_from_page(obj, d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15298 fb->offsets[2] + 16, d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 @15299 sizeof(&plane_state->ccval), d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15300 &plane_state->ccval); This is a bug in Smatch and it's quite complicated to fix... But the sizeof() is still probably wrong. It should be the size of the u64 instead of the address. d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15301 /* d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15302 * The obj is pinned and synced against GPU writes already, so d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15303 * the above can't normally fail. d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15304 */ d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15305 drm_WARN_ON(&i915->drm, ret); d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15306 } d5de4516a9de74 drivers/gpu/drm/i915/display/intel_display.c Radhakrishna Sripada 2021-01-14 15307 } --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org