From: kernel test robot <lkp@intel.com>
To: oe-kbuild@lists.linux.dev
Cc: lkp@intel.com, Dan Carpenter <error27@gmail.com>
Subject: drivers/gpu/drm/i915/display/intel_color.c:2392 i9xx_color_check() error: we previously assumed 'crtc_state->hw.gamma_lut' could be null (see line 2385)
Date: Thu, 13 Aug 2026 10:55:59 +0800 [thread overview]
Message-ID: <202608131036.WHh1csLP-lkp@intel.com> (raw)
BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Yury Norov <ynorov@nvidia.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f5bbbfec59b4e2fb7520a91de3df8a6174325d6a
commit: 09472f591aa0b72c2dd6c693f48b2d6fea66c7ba bitfield: wire __bf_shf to __builtin_ctzll
date: 3 months ago
:::::: branch date: 2 days ago
:::::: commit date: 3 months ago
config: x86_64-randconfig-161-20260813 (https://download.01.org/0day-ci/archive/20260813/202608131036.WHh1csLP-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
smatch: v0.5.0-9187-g5189e3fb
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
| Fixes: 09472f591aa0 ("bitfield: wire __bf_shf to __builtin_ctzll")
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202608131036.WHh1csLP-lkp@intel.com/
New smatch warnings:
drivers/gpu/drm/i915/display/intel_color.c:2392 i9xx_color_check() error: we previously assumed 'crtc_state->hw.gamma_lut' could be null (see line 2385)
Old smatch warnings:
drivers/gpu/drm/i915/display/intel_color.c:1544 ivb_load_luts() error: we previously assumed 'post_csc_lut' could be null (see line 1534)
vim +2392 drivers/gpu/drm/i915/display/intel_color.c
18f1b5ae7ecab0 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-10-24 2371
5f128aa1052e7d drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-05-23 2372 static int i9xx_color_check(struct intel_atomic_state *state,
5f128aa1052e7d drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-05-23 2373 struct intel_crtc *crtc)
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2374 {
9d476ce24f72fc drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-10-24 2375 struct intel_display *display = to_intel_display(state);
5f128aa1052e7d drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-05-23 2376 struct intel_crtc_state *crtc_state =
5f128aa1052e7d drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-05-23 2377 intel_atomic_get_new_crtc_state(state, crtc);
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2378 int ret;
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2379
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2380 ret = check_luts(crtc_state);
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2381 if (ret)
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2382 return ret;
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2383
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2384 crtc_state->gamma_enable =
1326a92c346641 drivers/gpu/drm/i915/display/intel_color.c Maarten Lankhorst 2019-10-31 @2385 crtc_state->hw.gamma_lut &&
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2386 !crtc_state->c8_planes;
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2387
e262568eb58fe7 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-04-01 2388 crtc_state->gamma_mode = i9xx_gamma_mode(crtc_state);
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2389
9d476ce24f72fc drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-10-24 2390 if (DISPLAY_VER(display) < 4 &&
67630bacae2354 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-11-14 2391 crtc_state->gamma_mode == GAMMA_MODE_MODE_10BIT) {
dd3721a76f0b8a drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-10-24 @2392 ret = i9xx_check_lut_10(crtc, crtc_state->hw.gamma_lut);
67630bacae2354 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-11-14 2393 if (ret)
67630bacae2354 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-11-14 2394 return ret;
67630bacae2354 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-11-14 2395 }
67630bacae2354 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-11-14 2396
5f128aa1052e7d drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-05-23 2397 ret = intel_color_add_affected_planes(state, crtc);
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2398 if (ret)
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2399 return ret;
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2400
18f1b5ae7ecab0 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-10-24 2401 intel_assign_luts(crtc_state);
18f1b5ae7ecab0 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2022-10-24 2402
5f128aa1052e7d drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2024-05-23 2403 crtc_state->preload_luts = intel_can_preload_luts(state, crtc);
0ccc42a2fd5107 drivers/gpu/drm/i915/display/intel_color.c Ville Syrjälä 2019-10-30 2404
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2405 return 0;
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2406 }
e98f35624ca4a4 drivers/gpu/drm/i915/intel_color.c Ville Syrjälä 2019-03-27 2407
:::::: The code at line 2392 was first introduced by commit
:::::: dd3721a76f0b8a0054acc1befe5298a7bef47f07 drm/i915/color: Pimp debugs
:::::: TO: Ville Syrjälä <ville.syrjala@linux.intel.com>
:::::: CC: Ville Syrjälä <ville.syrjala@linux.intel.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-08-13 2:56 UTC|newest]
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