From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 76BDE3D3CF7; Wed, 25 Mar 2026 12:08:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.14 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774440518; cv=none; b=Xe9ERaqxt2YOSWjbW0ZLCRBkiY4mV9mYIX0mEqHLNCqUfu+YZpZVKC7MNyp24q98zVa5czOd1+FQZPq7WRbc+j+HxBRr3EJdd8aCcXgtgy/zHsw3KDSaKS7wNW8+UO321XIlWdSn4lnNVOdiaR1UahM2x5AEDDvAuUX75yN1rUg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774440518; c=relaxed/simple; bh=PtOgjXHwZfnjZGY+VUgc0883RJgJeMNHYXjJ5Z9sh4M=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=kBoB7WYFUPEEaDmJm9YV+XeCAK8NQtDuRrSn1BxJJTGiWtonfAzoBxQZmnnAgNvoVkXh0agftk/EAPiTat4NJRtRQAAN5YaCrjKainyb0Un1T4t7ui1DfeIA2ftbKnzuEcDseKrYjfFNx4/N+rwZTNamYEpTmgKb6eZRjgZrHtA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=gK8E5RxL; arc=none smtp.client-ip=198.175.65.14 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="gK8E5RxL" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774440518; x=1805976518; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=PtOgjXHwZfnjZGY+VUgc0883RJgJeMNHYXjJ5Z9sh4M=; b=gK8E5RxLXlrFDyXeov8dHh57Q+LCCpG668AKe3MoMC8jtp91I237VlaN UHiJHAgcelWgp7popfZZWF2Y8jwxzoZ4Fbx/QKupedT98ET9z9ZApN1Fm P0aNrYmriO7Pio/XnsWHEllqzin3z/vxAsdI0wJV0EX/oHNL3pR9hVVg5 x02PnpxLavNPAzuWz0tcMHTXJ3wJ4wf0khwHNWdW8Y4K3hexTpXsNKg4+ EMZ2MVc/Pk5tt/pUKJ976uCD3Gk+lZo2Daqhz4FBg64oh+UCG+dC+XKs1 GeYKWpinfqD26lVgStXIkqPuM3AeHhedn1nLv+5IhC8EmvboASlLfwKXv A==; X-CSE-ConnectionGUID: Tf/LH2NLTAy6UoSMbKGh1A== X-CSE-MsgGUID: GGUmYsGyRtaxa9FL1DikSw== X-IronPort-AV: E=McAfee;i="6800,10657,11739"; a="79330529" X-IronPort-AV: E=Sophos;i="6.23,140,1770624000"; d="scan'208";a="79330529" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Mar 2026 05:08:35 -0700 X-CSE-ConnectionGUID: 3jHvj3/WQwaO1tETLo49OA== X-CSE-MsgGUID: 43I7bx9NQCiF44jy7R/qiw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,140,1770624000"; d="scan'208";a="224925530" Received: from lkp-server01.sh.intel.com (HELO 3905d212be1b) ([10.239.97.150]) by orviesa007.jf.intel.com with ESMTP; 25 Mar 2026 05:08:33 -0700 Received: from kbuild by 3905d212be1b with local (Exim 4.98.2) (envelope-from ) id 1w5N2C-000000006mL-3y4Q; Wed, 25 Mar 2026 12:08:29 +0000 Date: Wed, 25 Mar 2026 20:07:43 +0800 From: kernel test robot To: hamjin , linux-kernel@vger.kernel.org Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, hamjin Subject: Re: [PATCH] lib: typecheck: initialize const variable to avoid Clang warning Message-ID: <202603252009.z5G8iyl7-lkp@intel.com> References: Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Hi hamjin, kernel test robot noticed the following build errors: [auto build test ERROR on linus/master] [also build test ERROR on v7.0-rc5 next-20260324] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/hamjin/lib-typecheck-initialize-const-variable-to-avoid-Clang-warning/20260315-165617 base: linus/master patch link: https://lore.kernel.org/r/tencent_274FD06231C70768C2C28FD13673A24C2B08%40qq.com patch subject: [PATCH] lib: typecheck: initialize const variable to avoid Clang warning config: s390-allnoconfig (https://download.01.org/0day-ci/archive/20260325/202603252009.z5G8iyl7-lkp@intel.com/config) compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project 054e11d1a17e5ba88bb1a8ef32fad3346e80b186) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260325/202603252009.z5G8iyl7-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/202603252009.z5G8iyl7-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from arch/s390/kernel/asm-offsets.c:10: In file included from include/linux/sched.h:12: In file included from arch/s390/include/asm/current.h:13: In file included from arch/s390/include/asm/lowcore.h:14: >> arch/s390/include/asm/ptrace.h:224:9: error: used type 'typeof (regs->psw)' (aka 'const psw_t') where arithmetic or pointer type is required 224 | return psw_bits(regs->psw).pstate; | ^~~~~~~~~~~~~~~~~~~ arch/s390/include/asm/ptrace.h:98:2: note: expanded from macro 'psw_bits' 98 | typecheck(psw_t, __psw); \ | ^~~~~~~~~~~~~~~~~~~~~~~ include/linux/typecheck.h:11:23: note: expanded from macro 'typecheck' 11 | typeof(x) __dummy2 = (typeof(x))0; \ | ^ ~ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:98:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 98 | return (set->sig[3] | set->sig[2] | | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:98:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 98 | return (set->sig[3] | set->sig[2] | | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:99:4: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 99 | set->sig[1] | set->sig[0]) == 0; | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:101:11: warning: array index 1 is past the end of the array (that has type 'unsigned long[1]') [-Warray-bounds] 101 | return (set->sig[1] | set->sig[0]) == 0; | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:114:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 114 | return (set1->sig[3] == set2->sig[3]) && | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:114:27: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 114 | return (set1->sig[3] == set2->sig[3]) && | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:115:5: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 115 | (set1->sig[2] == set2->sig[2]) && | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:115:21: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 115 | (set1->sig[2] == set2->sig[2]) && | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: In file included from include/linux/ptrace.h:7: In file included from include/linux/sched/signal.h:6: include/linux/signal.h:116:5: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds] 116 | (set1->sig[1] == set2->sig[1]) && | ^ ~ arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here 22 | unsigned long sig[_NSIG_WORDS]; | ^ In file included from arch/s390/kernel/asm-offsets.c:15: In file included from arch/s390/include/asm/stacktrace.h:7: vim +224 arch/s390/include/asm/ptrace.h 952974ac61f686 Heiko Carstens 2010-02-12 221 afa8fa52a42c31 Jens Remus 2025-12-11 222 static __always_inline bool user_mode(const struct pt_regs *regs) afa8fa52a42c31 Jens Remus 2025-12-11 223 { afa8fa52a42c31 Jens Remus 2025-12-11 @224 return psw_bits(regs->psw).pstate; afa8fa52a42c31 Jens Remus 2025-12-11 225 } afa8fa52a42c31 Jens Remus 2025-12-11 226 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki