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X-CSE-ConnectionGUID: FijGsP0tQtWeJ/Oh9gXKaQ== X-CSE-MsgGUID: y2kEdc9jSpW5GAmL3OFstA== X-IronPort-AV: E=McAfee;i="6800,10657,11781"; a="79407613" X-IronPort-AV: E=Sophos;i="6.23,225,1770624000"; d="scan'208";a="79407613" Received: from fmviesa005.fm.intel.com ([10.60.135.145]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 May 2026 15:42:34 -0700 X-CSE-ConnectionGUID: 3DghKo9tQdml++LIVDIX9w== X-CSE-MsgGUID: ng+bFR7aRpGIkrQxlGdGng== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,225,1770624000"; d="scan'208";a="242049608" Received: from lkp-server01.sh.intel.com (HELO 82327192134e) ([10.239.97.150]) by fmviesa005.fm.intel.com with ESMTP; 09 May 2026 15:42:33 -0700 Received: from kbuild by 82327192134e with local (Exim 4.98.2) (envelope-from ) id 1wLqNS-000000001UL-48Cj; Sat, 09 May 2026 22:42:30 +0000 Date: Sun, 10 May 2026 06:42:16 +0800 From: kernel test robot To: Asahi Lina Cc: oe-kbuild-all@lists.linux.dev, Janne Grunau Subject: [asahilinux:bits/030-misc 12/16] kernel/locking/lockdep.c:3407:49: sparse: sparse: cast truncates bits from constant value (a0000 becomes 0) Message-ID: <202605100659.Q44ovXIS-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: tree: https://github.com/AsahiLinux/linux bits/030-misc head: ba55a7ab0f6380bbedb1480e837abed687c987dd commit: 033daad0e3013ea11037cd3d33a22d082a8102f3 [12/16] Increase MAX_LOCKDEP_CHAIN_HLOCKS config: s390-randconfig-r122-20260509 (https://download.01.org/0day-ci/archive/20260510/202605100659.Q44ovXIS-lkp@intel.com/config) compiler: s390-linux-gcc (GCC) 8.5.0 sparse: v0.6.5-rc1 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260510/202605100659.Q44ovXIS-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/202605100659.Q44ovXIS-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> kernel/locking/lockdep.c:3407:49: sparse: sparse: cast truncates bits from constant value (a0000 becomes 0) >> kernel/locking/lockdep.c:3407:49: sparse: sparse: cast truncates bits from constant value (a0000 becomes 0) vim +3407 kernel/locking/lockdep.c 810507fe6fd5ff Waiman Long 2020-02-06 3399 810507fe6fd5ff Waiman Long 2020-02-06 3400 static inline void init_chain_block(int offset, int next, int bucket, int size) 810507fe6fd5ff Waiman Long 2020-02-06 3401 { 810507fe6fd5ff Waiman Long 2020-02-06 3402 chain_hlocks[offset] = (next >> 16) | CHAIN_BLK_FLAG; 810507fe6fd5ff Waiman Long 2020-02-06 3403 chain_hlocks[offset + 1] = (u16)next; 810507fe6fd5ff Waiman Long 2020-02-06 3404 810507fe6fd5ff Waiman Long 2020-02-06 3405 if (size && !bucket) { 810507fe6fd5ff Waiman Long 2020-02-06 3406 chain_hlocks[offset + 2] = size >> 16; 810507fe6fd5ff Waiman Long 2020-02-06 @3407 chain_hlocks[offset + 3] = (u16)size; 810507fe6fd5ff Waiman Long 2020-02-06 3408 } 810507fe6fd5ff Waiman Long 2020-02-06 3409 } 810507fe6fd5ff Waiman Long 2020-02-06 3410 :::::: The code at line 3407 was first introduced by commit :::::: 810507fe6fd5ff3de429121adff49523fabb643a locking/lockdep: Reuse freed chain_hlocks entries :::::: TO: Waiman Long :::::: CC: Ingo Molnar -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki