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(fwd) To: Julia Lawall , Alex Deucher , Rodrigo Siqueira Cc: Linux Memory Management List , oe-kbuild-all@lists.linux.dev References: Content-Language: en-US From: Hamza Mahfooz In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: YQBPR0101CA0254.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:c01:68::21) To DM4PR12MB6280.namprd12.prod.outlook.com (2603:10b6:8:a2::11) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DM4PR12MB6280:EE_|BY5PR12MB4290:EE_ X-MS-Office365-Filtering-Correlation-Id: cc2ad055-fde1-40ef-e266-08dbc9ca63ae X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c:538:25-29: ERROR: > aconnector is NULL but dereferenced. > > BCC: lkp@intel.com > CC: oe-kbuild-all@lists.linux.dev > CC: Linux Memory Management List > TO: Hamza Mahfooz > CC: Alex Deucher > CC: Rodrigo Siqueira > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: c0a6edb636cba9c0d1db966a54d910a02e52e4be > commit: 5d72e247e58c966f4e50cffebf0d414de7fc90ed [6935/11192] drm/amd/display: switch DC over to the new DRM logging macros > :::::: branch date: 12 hours ago > :::::: commit date: 2 weeks ago > config: x86_64-randconfig-104-20231010 (https://download.01.org/0day-ci/archive/20231011/202310110104.H593hwLd-lkp@intel.com/config) > compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 > reproduce: (https://download.01.org/0day-ci/archive/20231011/202310110104.H593hwLd-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 > | Reported-by: Julia Lawall > | Closes: https://lore.kernel.org/r/202310110104.H593hwLd-lkp@intel.com/ > > cocci warnings: (new ones prefixed by >>) >>> drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c:538:25-29: ERROR: aconnector is NULL but dereferenced. > > vim +538 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c > > 4562236b3bc0a28 Harry Wentland 2017-09-12 534 > c84dec2fe8837fa Harry Wentland 2017-09-05 535 struct amdgpu_dm_connector *aconnector = link->priv; > 4562236b3bc0a28 Harry Wentland 2017-09-12 536 > 4562236b3bc0a28 Harry Wentland 2017-09-12 537 if (!aconnector) { > 5d72e247e58c966 Hamza Mahfooz 2023-09-20 @538 drm_dbg_dp(aconnector->base.dev, > 5d72e247e58c966 Hamza Mahfooz 2023-09-20 539 "Failed to find connector for link!\n"); Can you send out a patch that drops drm_dbg_dp() from here? Since, it should only be reachable before hw init and it is expected at that point, so it doesn't provide any meaningful insights. > 4562236b3bc0a28 Harry Wentland 2017-09-12 540 return false; > 4562236b3bc0a28 Harry Wentland 2017-09-12 541 } > 4562236b3bc0a28 Harry Wentland 2017-09-12 542 > 4648cf5fc8c78d7 Hamza Mahfooz 2023-03-08 543 return drm_dp_dpcd_read(&aconnector->dm_dp_aux.aux, address, data, > 4648cf5fc8c78d7 Hamza Mahfooz 2023-03-08 544 size) == size; > 4562236b3bc0a28 Harry Wentland 2017-09-12 545 } > 4562236b3bc0a28 Harry Wentland 2017-09-12 546 > -- Hamza