From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) (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 E04A281724; Fri, 28 Nov 2025 02:41:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.17 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764297714; cv=none; b=LH7JNdzI4OsJ9ZkPHbI88GNwK+zMbfZhedvvfKzVkb5ErRyy7MT8TPLG9Mf4/NqUtQo/kOi4XjNGHKljWOlsUHY/LJ1VBhnjcIGuOqtnAvjJTAdVpOA7Br8Pf4hKV/D9TOueZ929eAHgnVZ+oGaEHVjLSSVm0OHuvBGdESDA0Zo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764297714; c=relaxed/simple; bh=JrreKOGy8fVi0NuOuKgyab2Zvd9rEWjrB41J9wje3dg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=d5SDwuJr6dr+IU4Rr8DwzihlGiOzxjJjDL1+rjcPDUcltCkL+19XRJ7X/0OvFzr6FPh6FL36kN/m2hQE1VX+GPLNlS1TNsZLv/aXAEtrIy00zqMMR9KRUrSbZBT1ravXxdB0CruvTGbIRnzHaQB57rYQgKm+aWjGIejVV+flJ2w= 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=jn4cm4TZ; arc=none smtp.client-ip=198.175.65.17 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="jn4cm4TZ" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1764297713; x=1795833713; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=JrreKOGy8fVi0NuOuKgyab2Zvd9rEWjrB41J9wje3dg=; b=jn4cm4TZTdvcmCvx9Wgrn8xrNC//FbBw9dP+0vrw7vywD42RJm8f3IfP UFxenq+6lEdOVCrCeK2zgLOhr1aliHJctZH+4bAjyvTC0QAv11MIQgogg kGltXmgeg35IVZtExEmjemTm7cNZSWhzaEwNOpz0qrj0kNly8qN7LyU5P 0bbs4Fxque5oiJty8cUMpjs5EiwBePYPThsPk+zAKhYyw2u31EBO9WttI a3GZZPQWDVdtz91fwHtadWihA8XQuc+zX4pw1IHYo+lzJFeEQ2QgBYESN nnrTMSBzfRobHovb7n0LbtiNrsqCyU9dStZMf15lXzBDbfMAxSdJAou50 A==; X-CSE-ConnectionGUID: CswZzy2qRj+W5/g14oljEQ== X-CSE-MsgGUID: 7YYN9mBPQ1iNNUFr7hfUYA== X-IronPort-AV: E=McAfee;i="6800,10657,11626"; a="66296060" X-IronPort-AV: E=Sophos;i="6.20,232,1758610800"; d="scan'208";a="66296060" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2025 18:41:52 -0800 X-CSE-ConnectionGUID: yTwd8rZATgm/rWBAoESr/w== X-CSE-MsgGUID: oKevCgOSR/Ov00lsm3JErw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.20,232,1758610800"; d="scan'208";a="198463500" Received: from lkp-server01.sh.intel.com (HELO 4664bbef4914) ([10.239.97.150]) by orviesa005.jf.intel.com with ESMTP; 27 Nov 2025 18:41:48 -0800 Received: from kbuild by 4664bbef4914 with local (Exim 4.98.2) (envelope-from ) id 1vOoQd-000000005w5-1Rq6; Fri, 28 Nov 2025 02:41:47 +0000 Date: Fri, 28 Nov 2025 10:41:17 +0800 From: kernel test robot To: Osama Abdelkader , catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, ada.coupriediaz@arm.com, smostafa@google.com Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Osama Abdelkader Subject: Re: [PATCH] arm64: Remove unreachable break after die Message-ID: <202511281049.oCzxmRVJ-lkp@intel.com> References: <20251126222620.215245-1-osama.abdelkader@gmail.com> 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: <20251126222620.215245-1-osama.abdelkader@gmail.com> Hi Osama, kernel test robot noticed the following build warnings: [auto build test WARNING on arm64/for-next/core] [also build test WARNING on linus/master v6.18-rc7 next-20251127] [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/Osama-Abdelkader/arm64-Remove-unreachable-break-after-die/20251127-062758 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core patch link: https://lore.kernel.org/r/20251126222620.215245-1-osama.abdelkader%40gmail.com patch subject: [PATCH] arm64: Remove unreachable break after die config: arm64-randconfig-001-20251128 (https://download.01.org/0day-ci/archive/20251128/202511281049.oCzxmRVJ-lkp@intel.com/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project b3428bb966f1de8aa48375ffee0eba04ede133b7) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251128/202511281049.oCzxmRVJ-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/202511281049.oCzxmRVJ-lkp@intel.com/ All warnings (new ones prefixed by >>): | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:862:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 862 | [ESR_ELx_EC_DABT_CUR] = "DABT (current EL)", | ^~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:863:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 863 | [ESR_ELx_EC_SP_ALIGN] = "SP Alignment", | ^~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:864:23: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 864 | [ESR_ELx_EC_MOPS] = "MOPS", | ^~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:865:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 865 | [ESR_ELx_EC_FP_EXC32] = "FP (AArch32)", | ^~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:866:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 866 | [ESR_ELx_EC_FP_EXC64] = "FP (AArch64)", | ^~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:867:22: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 867 | [ESR_ELx_EC_GCS] = "Guarded Control Stack", | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:868:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 868 | [ESR_ELx_EC_SERROR] = "SError", | ^~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:869:29: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 869 | [ESR_ELx_EC_BREAKPT_LOW] = "Breakpoint (lower EL)", | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:870:29: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 870 | [ESR_ELx_EC_BREAKPT_CUR] = "Breakpoint (current EL)", | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:871:29: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 871 | [ESR_ELx_EC_SOFTSTP_LOW] = "Software Step (lower EL)", | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:872:29: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 872 | [ESR_ELx_EC_SOFTSTP_CUR] = "Software Step (current EL)", | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:873:29: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 873 | [ESR_ELx_EC_WATCHPT_LOW] = "Watchpoint (lower EL)", | ^~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:874:29: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 874 | [ESR_ELx_EC_WATCHPT_CUR] = "Watchpoint (current EL)", | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:875:25: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 875 | [ESR_ELx_EC_BKPT32] = "BKPT (AArch32)", | ^~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:876:27: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 876 | [ESR_ELx_EC_VECTOR32] = "Vector catch (AArch32)", | ^~~~~~~~~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:877:24: warning: initializer overrides prior initialization of this subobject [-Winitializer-overrides] 877 | [ESR_ELx_EC_BRK64] = "BRK (AArch64)", | ^~~~~~~~~~~~~~~ arch/arm64/kernel/traps.c:833:28: note: previous initialization is here 833 | [0 ... ESR_ELx_EC_MAX] = "UNRECOGNIZED EC", | ^~~~~~~~~~~~~~~~~ >> arch/arm64/kernel/traps.c:1007:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough] 1007 | case BUG_TRAP_TYPE_WARN: | ^ arch/arm64/kernel/traps.c:1007:2: note: insert 'break;' to avoid fall-through 1007 | case BUG_TRAP_TYPE_WARN: | ^ | break; 45 warnings generated. vim +1007 arch/arm64/kernel/traps.c 9fb7410f955f7a Dave P Martin 2015-07-24 1000 6adfdc5e2ef9c7 Ada Couprie Diaz 2025-07-07 1001 int bug_brk_handler(struct pt_regs *regs, unsigned long esr) 9fb7410f955f7a Dave P Martin 2015-07-24 1002 { 9fb7410f955f7a Dave P Martin 2015-07-24 1003 switch (report_bug(regs->pc, regs)) { 9fb7410f955f7a Dave P Martin 2015-07-24 1004 case BUG_TRAP_TYPE_BUG: 0f2cb928a1547a Mark Rutland 2022-09-13 1005 die("Oops - BUG", regs, esr); 9fb7410f955f7a Dave P Martin 2015-07-24 1006 9fb7410f955f7a Dave P Martin 2015-07-24 @1007 case BUG_TRAP_TYPE_WARN: 9fb7410f955f7a Dave P Martin 2015-07-24 1008 break; 9fb7410f955f7a Dave P Martin 2015-07-24 1009 9fb7410f955f7a Dave P Martin 2015-07-24 1010 default: 9fb7410f955f7a Dave P Martin 2015-07-24 1011 /* unknown/unrecognised bug trap type */ 9fb7410f955f7a Dave P Martin 2015-07-24 1012 return DBG_HOOK_ERROR; 9fb7410f955f7a Dave P Martin 2015-07-24 1013 } 9fb7410f955f7a Dave P Martin 2015-07-24 1014 9fb7410f955f7a Dave P Martin 2015-07-24 1015 /* If thread survives, skip over the BUG instruction and continue: */ 6436beeee5721a Julien Thierry 2017-10-25 1016 arm64_skip_faulting_instruction(regs, AARCH64_INSN_SIZE); 9fb7410f955f7a Dave P Martin 2015-07-24 1017 return DBG_HOOK_HANDLED; 9fb7410f955f7a Dave P Martin 2015-07-24 1018 } 9fb7410f955f7a Dave P Martin 2015-07-24 1019 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki