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[akpm-mm:mm-new 400/411] include/linux/compiler_types.h:572:38: error: call to '__compiletime_assert_486' declared with attribute error: BUILD_BUG failed To: kernel test robot Cc: oe-kbuild-all@lists.linux.dev, Andrew Morton , Linux Memory Management List References: <202509110742.wWjLDz1Q-lkp@intel.com> Content-Language: en-US From: Balbir Singh In-Reply-To: <202509110742.wWjLDz1Q-lkp@intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: SJ0PR05CA0081.namprd05.prod.outlook.com (2603:10b6:a03:332::26) To PH8PR12MB7277.namprd12.prod.outlook.com (2603:10b6:510:223::13) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR12MB7277:EE_|PH7PR12MB9065:EE_ X-MS-Office365-Filtering-Correlation-Id: bf554f0f-b4a5-4318-07c6-08ddf13298ee X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|10070799003|1800799024|7053199007; X-Microsoft-Antispam-Message-Info: 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3a0afa6640282ff559b6f4ff432cffc3ecc2bc77 > commit: 5e59d4de7ff923ce84158f3357c4e964d2ec46af [400/411] mm/migrate_device: implement THP migration of zone device pages > config: powerpc64-randconfig-003-20250911 (https://download.01.org/0day-ci/archive/20250911/202509110742.wWjLDz1Q-lkp@intel.com/config) > compiler: powerpc64-linux-gcc (GCC) 8.5.0 > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250911/202509110742.wWjLDz1Q-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 > | Closes: https://lore.kernel.org/oe-kbuild-all/202509110742.wWjLDz1Q-lkp@intel.com/ > > All errors (new ones prefixed by >>): > > In file included from : > mm/migrate_device.c: In function '__migrate_device_pages': >>> include/linux/compiler_types.h:572:38: error: call to '__compiletime_assert_486' declared with attribute error: BUILD_BUG failed > _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) > ^ > include/linux/compiler_types.h:553:4: note: in definition of macro '__compiletime_assert' > prefix ## suffix(); \ > ^~~~~~ > include/linux/compiler_types.h:572:2: note: in expansion of macro '_compiletime_assert' > _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) > ^~~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert' > #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) > ^~~~~~~~~~~~~~~~~~ > include/linux/build_bug.h:59:21: note: in expansion of macro 'BUILD_BUG_ON_MSG' > #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed") > ^~~~~~~~~~~~~~~~ > include/linux/huge_mm.h:113:28: note: in expansion of macro 'BUILD_BUG' > #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) > ^~~~~~~~~ > include/linux/huge_mm.h:117:26: note: in expansion of macro 'HPAGE_PMD_SHIFT' > #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) > ^~~~~~~~~~~~~~~ > include/linux/huge_mm.h:118:26: note: in expansion of macro 'HPAGE_PMD_ORDER' > #define HPAGE_PMD_NR (1< ^~~~~~~~~~~~~~~ > mm/migrate_device.c:1101:10: note: in expansion of macro 'HPAGE_PMD_NR' > nr = HPAGE_PMD_NR; > ^~~~~~~~~~~~ Thanks for the report, I'll fix the use of HPAGE_PMD_NR by protecting it with the right conditional or using folio_nr_pages() Balbir