Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4835DC433EF for ; Thu, 25 Nov 2021 01:39:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346806AbhKYBmj (ORCPT ); Wed, 24 Nov 2021 20:42:39 -0500 Received: from mga03.intel.com ([134.134.136.65]:46094 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347659AbhKYBki (ORCPT ); Wed, 24 Nov 2021 20:40:38 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10178"; a="235358202" X-IronPort-AV: E=Sophos;i="5.87,261,1631602800"; d="scan'208";a="235358202" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Nov 2021 17:35:14 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,261,1631602800"; d="scan'208";a="571650841" Received: from lkp-server02.sh.intel.com (HELO 9e1e9f9b3bcb) ([10.239.97.151]) by fmsmga004.fm.intel.com with ESMTP; 24 Nov 2021 17:35:12 -0800 Received: from kbuild by 9e1e9f9b3bcb with local (Exim 4.92) (envelope-from ) id 1mq3fL-0005Zj-TB; Thu, 25 Nov 2021 01:35:11 +0000 Date: Thu, 25 Nov 2021 09:34:47 +0800 From: kernel test robot To: Ard Biesheuvel Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [ardb:for-kernelci 25/25] arch/arm/kernel/traps.c:865:17: warning: no previous prototype for function 'handle_bad_stack' Message-ID: <202111250918.ErFZktQF-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git for-kernelci head: 5da04a8b7050432b72f6551b6c95e4b5b5fd68d1 commit: 5da04a8b7050432b72f6551b6c95e4b5b5fd68d1 [25/25] ARM: implement THREAD_INFO_IN_TASK for uniprocessor systems config: arm-randconfig-r024-20211124 (https://download.01.org/0day-ci/archive/20211125/202111250918.ErFZktQF-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 67a1c45def8a75061203461ab0060c75c864df1c) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git/commit/?id=5da04a8b7050432b72f6551b6c95e4b5b5fd68d1 git remote add ardb git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux.git git fetch --no-tags ardb for-kernelci git checkout 5da04a8b7050432b72f6551b6c95e4b5b5fd68d1 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): arch/arm/kernel/traps.c:95:6: warning: no previous prototype for function 'dump_backtrace_stm' [-Wmissing-prototypes] void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl) ^ arch/arm/kernel/traps.c:95:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dump_backtrace_stm(u32 *stack, u32 instruction, const char *loglvl) ^ static arch/arm/kernel/traps.c:446:17: warning: no previous prototype for function 'do_undefinstr' [-Wmissing-prototypes] asmlinkage void do_undefinstr(struct pt_regs *regs) ^ arch/arm/kernel/traps.c:446:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void do_undefinstr(struct pt_regs *regs) ^ static arch/arm/kernel/traps.c:511:39: warning: no previous prototype for function 'handle_fiq_as_nmi' [-Wmissing-prototypes] asmlinkage void __exception_irq_entry handle_fiq_as_nmi(struct pt_regs *regs) ^ arch/arm/kernel/traps.c:511:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void __exception_irq_entry handle_fiq_as_nmi(struct pt_regs *regs) ^ static arch/arm/kernel/traps.c:530:17: warning: no previous prototype for function 'bad_mode' [-Wmissing-prototypes] asmlinkage void bad_mode(struct pt_regs *regs, int reason) ^ arch/arm/kernel/traps.c:530:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void bad_mode(struct pt_regs *regs, int reason) ^ static arch/arm/kernel/traps.c:603:16: warning: no previous prototype for function 'arm_syscall' [-Wmissing-prototypes] asmlinkage int arm_syscall(int no, struct pt_regs *regs) ^ arch/arm/kernel/traps.c:603:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage int arm_syscall(int no, struct pt_regs *regs) ^ static arch/arm/kernel/traps.c:729:1: warning: no previous prototype for function 'baddataabort' [-Wmissing-prototypes] baddataabort(int code, unsigned long instr, struct pt_regs *regs) ^ arch/arm/kernel/traps.c:728:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void ^ static arch/arm/kernel/traps.c:769:17: warning: no previous prototype for function '__div0' [-Wmissing-prototypes] asmlinkage void __div0(void) ^ arch/arm/kernel/traps.c:769:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void __div0(void) ^ static >> arch/arm/kernel/traps.c:865:17: warning: no previous prototype for function 'handle_bad_stack' [-Wmissing-prototypes] asmlinkage void handle_bad_stack(struct pt_regs *regs) ^ arch/arm/kernel/traps.c:865:12: note: declare 'static' if the function is not intended to be used outside of this translation unit asmlinkage void handle_bad_stack(struct pt_regs *regs) ^ static 8 warnings generated. vim +/handle_bad_stack +865 arch/arm/kernel/traps.c adc7d753de62f2 Ard Biesheuvel 2021-09-23 864 adc7d753de62f2 Ard Biesheuvel 2021-09-23 @865 asmlinkage void handle_bad_stack(struct pt_regs *regs) adc7d753de62f2 Ard Biesheuvel 2021-09-23 866 { adc7d753de62f2 Ard Biesheuvel 2021-09-23 867 unsigned long tsk_stk = (unsigned long)current->stack; 5da04a8b705043 Ard Biesheuvel 2021-11-24 868 #ifdef CONFIG_IRQSTACKS adc7d753de62f2 Ard Biesheuvel 2021-09-23 869 unsigned long irq_stk = (unsigned long)this_cpu_read(irq_stack_ptr); 5da04a8b705043 Ard Biesheuvel 2021-11-24 870 #endif adc7d753de62f2 Ard Biesheuvel 2021-09-23 871 unsigned long ovf_stk = (unsigned long)this_cpu_read(overflow_stack_ptr); adc7d753de62f2 Ard Biesheuvel 2021-09-23 872 adc7d753de62f2 Ard Biesheuvel 2021-09-23 873 console_verbose(); adc7d753de62f2 Ard Biesheuvel 2021-09-23 874 pr_emerg("Insufficient stack space to handle exception!"); adc7d753de62f2 Ard Biesheuvel 2021-09-23 875 adc7d753de62f2 Ard Biesheuvel 2021-09-23 876 pr_emerg("Task stack: [0x%08lx..0x%08lx]\n", adc7d753de62f2 Ard Biesheuvel 2021-09-23 877 tsk_stk, tsk_stk + THREAD_SIZE); 5da04a8b705043 Ard Biesheuvel 2021-11-24 878 #ifdef CONFIG_IRQSTACKS adc7d753de62f2 Ard Biesheuvel 2021-09-23 879 pr_emerg("IRQ stack: [0x%08lx..0x%08lx]\n", adc7d753de62f2 Ard Biesheuvel 2021-09-23 880 irq_stk - THREAD_SIZE, irq_stk); 5da04a8b705043 Ard Biesheuvel 2021-11-24 881 #endif adc7d753de62f2 Ard Biesheuvel 2021-09-23 882 pr_emerg("Overflow stack: [0x%08lx..0x%08lx]\n", adc7d753de62f2 Ard Biesheuvel 2021-09-23 883 ovf_stk - OVERFLOW_STACK_SIZE, ovf_stk); adc7d753de62f2 Ard Biesheuvel 2021-09-23 884 adc7d753de62f2 Ard Biesheuvel 2021-09-23 885 die("kernel stack overflow", regs, 0); adc7d753de62f2 Ard Biesheuvel 2021-09-23 886 } adc7d753de62f2 Ard Biesheuvel 2021-09-23 887 :::::: The code at line 865 was first introduced by commit :::::: adc7d753de62f220505f528106a6d618104302c5 ARM: implement support for vmap'ed stacks :::::: TO: Ard Biesheuvel :::::: CC: Ard Biesheuvel --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org