From mboxrd@z Thu Jan 1 00:00:00 1970 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 8E10AC433EF for ; Thu, 13 Jan 2022 22:14:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237199AbiAMWOI (ORCPT ); Thu, 13 Jan 2022 17:14:08 -0500 Received: from mga03.intel.com ([134.134.136.65]:52671 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235200AbiAMWOH (ORCPT ); Thu, 13 Jan 2022 17:14:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1642112047; x=1673648047; h=date:from:to:cc:subject:message-id:mime-version; bh=mGqO5WmsnZqFn6V4XFtPM6EpmQW/xumA/+hpUuQaoRc=; b=m5iVGLzJEMurr90A7Z2DNRxkfNbB+PGo+qwW0Uz0PwtkcC6YcW/zJ8+u Q2E1i9Sft8cYo0xRo2Ovg4Ue+XsIfAyGSK9AWxtKMj8U2iqeOica8QATg K09rFdTAvN+3zn0YXASCoqrpeEIexGyMLz1w56vkdLePisx1PCHK91F/r xfOJL6LzLFKmvkSVr15h6ASb3dHcbFSLHlq50kiVEer5Q/LWmNMFwy9Cs o3t8da4dgVzzKpE+cCZ/jNHT7O2KiAbmh0jrtme+YlTTwGr4UjgaZorfx 8m3GlGD87V53TbAPHgccJUmD+ha09vKYuCAZLBgVASnFsV0NHaEPWl9+X Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10226"; a="244079854" X-IronPort-AV: E=Sophos;i="5.88,286,1635231600"; d="scan'208";a="244079854" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Jan 2022 14:14:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,286,1635231600"; d="scan'208";a="516108016" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga007.jf.intel.com with ESMTP; 13 Jan 2022 14:14:05 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1n88M8-0007hY-RK; Thu, 13 Jan 2022 22:14:04 +0000 Date: Fri, 14 Jan 2022 06:13:37 +0800 From: kernel test robot To: Peter Zijlstra Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Catalin Marinas , Mark Rutland Subject: arch/powerpc/kernel/stacktrace.c:171:9: error: implicit declaration of function 'nmi_cpu_backtrace' Message-ID: <202201140631.ZuSwa9QF-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: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: fb3b0673b7d5b477ed104949450cd511337ba3c6 commit: 1614b2b11fab29dd4ff31ebba9d266961f5af69e arch: Make ARCH_STACKWALK independent of STACKTRACE date: 5 weeks ago config: powerpc64-randconfig-r025-20220113 (https://download.01.org/0day-ci/archive/20220114/202201140631.ZuSwa9QF-lkp@intel.com/config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1614b2b11fab29dd4ff31ebba9d266961f5af69e git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 1614b2b11fab29dd4ff31ebba9d266961f5af69e # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): arch/powerpc/kernel/stacktrace.c: In function 'handle_backtrace_ipi': >> arch/powerpc/kernel/stacktrace.c:171:9: error: implicit declaration of function 'nmi_cpu_backtrace' [-Werror=implicit-function-declaration] 171 | nmi_cpu_backtrace(regs); | ^~~~~~~~~~~~~~~~~ arch/powerpc/kernel/stacktrace.c: At top level: arch/powerpc/kernel/stacktrace.c:224:6: warning: no previous prototype for 'arch_trigger_cpumask_backtrace' [-Wmissing-prototypes] 224 | void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/kernel/stacktrace.c: In function 'arch_trigger_cpumask_backtrace': >> arch/powerpc/kernel/stacktrace.c:226:9: error: implicit declaration of function 'nmi_trigger_cpumask_backtrace'; did you mean 'arch_trigger_cpumask_backtrace'? [-Werror=implicit-function-declaration] 226 | nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | arch_trigger_cpumask_backtrace cc1: some warnings being treated as errors vim +/nmi_cpu_backtrace +171 arch/powerpc/kernel/stacktrace.c 018cce33c5e62d Christophe Leroy 2019-01-31 167 e08ecba17b72ae Michael Ellerman 2018-06-19 168 #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_NMI_IPI) 5cc05910f26e6f Michael Ellerman 2018-05-02 169 static void handle_backtrace_ipi(struct pt_regs *regs) 5cc05910f26e6f Michael Ellerman 2018-05-02 170 { 5cc05910f26e6f Michael Ellerman 2018-05-02 @171 nmi_cpu_backtrace(regs); 5cc05910f26e6f Michael Ellerman 2018-05-02 172 } 5cc05910f26e6f Michael Ellerman 2018-05-02 173 5cc05910f26e6f Michael Ellerman 2018-05-02 174 static void raise_backtrace_ipi(cpumask_t *mask) 5cc05910f26e6f Michael Ellerman 2018-05-02 175 { 7c6986ade69e3c Michael Ellerman 2021-06-25 176 struct paca_struct *p; 5cc05910f26e6f Michael Ellerman 2018-05-02 177 unsigned int cpu; 7c6986ade69e3c Michael Ellerman 2021-06-25 178 u64 delay_us; 5cc05910f26e6f Michael Ellerman 2018-05-02 179 5cc05910f26e6f Michael Ellerman 2018-05-02 180 for_each_cpu(cpu, mask) { 7c6986ade69e3c Michael Ellerman 2021-06-25 181 if (cpu == smp_processor_id()) { 5cc05910f26e6f Michael Ellerman 2018-05-02 182 handle_backtrace_ipi(NULL); 7c6986ade69e3c Michael Ellerman 2021-06-25 183 continue; 5cc05910f26e6f Michael Ellerman 2018-05-02 184 } 5cc05910f26e6f Michael Ellerman 2018-05-02 185 7c6986ade69e3c Michael Ellerman 2021-06-25 186 delay_us = 5 * USEC_PER_SEC; 7c6986ade69e3c Michael Ellerman 2021-06-25 187 7c6986ade69e3c Michael Ellerman 2021-06-25 188 if (smp_send_safe_nmi_ipi(cpu, handle_backtrace_ipi, delay_us)) { 7c6986ade69e3c Michael Ellerman 2021-06-25 189 // Now wait up to 5s for the other CPU to do its backtrace 7c6986ade69e3c Michael Ellerman 2021-06-25 190 while (cpumask_test_cpu(cpu, mask) && delay_us) { 7c6986ade69e3c Michael Ellerman 2021-06-25 191 udelay(1); 7c6986ade69e3c Michael Ellerman 2021-06-25 192 delay_us--; 7c6986ade69e3c Michael Ellerman 2021-06-25 193 } 7c6986ade69e3c Michael Ellerman 2021-06-25 194 7c6986ade69e3c Michael Ellerman 2021-06-25 195 // Other CPU cleared itself from the mask 7c6986ade69e3c Michael Ellerman 2021-06-25 196 if (delay_us) 7c6986ade69e3c Michael Ellerman 2021-06-25 197 continue; 7c6986ade69e3c Michael Ellerman 2021-06-25 198 } 7c6986ade69e3c Michael Ellerman 2021-06-25 199 7c6986ade69e3c Michael Ellerman 2021-06-25 200 p = paca_ptrs[cpu]; 5cc05910f26e6f Michael Ellerman 2018-05-02 201 5cc05910f26e6f Michael Ellerman 2018-05-02 202 cpumask_clear_cpu(cpu, mask); 5cc05910f26e6f Michael Ellerman 2018-05-02 203 5cc05910f26e6f Michael Ellerman 2018-05-02 204 pr_warn("CPU %d didn't respond to backtrace IPI, inspecting paca.\n", cpu); 5cc05910f26e6f Michael Ellerman 2018-05-02 205 if (!virt_addr_valid(p)) { 5cc05910f26e6f Michael Ellerman 2018-05-02 206 pr_warn("paca pointer appears corrupt? (%px)\n", p); 5cc05910f26e6f Michael Ellerman 2018-05-02 207 continue; 5cc05910f26e6f Michael Ellerman 2018-05-02 208 } 5cc05910f26e6f Michael Ellerman 2018-05-02 209 5cc05910f26e6f Michael Ellerman 2018-05-02 210 pr_warn("irq_soft_mask: 0x%02x in_mce: %d in_nmi: %d", 5cc05910f26e6f Michael Ellerman 2018-05-02 211 p->irq_soft_mask, p->in_mce, p->in_nmi); 5cc05910f26e6f Michael Ellerman 2018-05-02 212 5cc05910f26e6f Michael Ellerman 2018-05-02 213 if (virt_addr_valid(p->__current)) 5cc05910f26e6f Michael Ellerman 2018-05-02 214 pr_cont(" current: %d (%s)\n", p->__current->pid, 5cc05910f26e6f Michael Ellerman 2018-05-02 215 p->__current->comm); 5cc05910f26e6f Michael Ellerman 2018-05-02 216 else 5cc05910f26e6f Michael Ellerman 2018-05-02 217 pr_cont(" current pointer corrupt? (%px)\n", p->__current); 5cc05910f26e6f Michael Ellerman 2018-05-02 218 5cc05910f26e6f Michael Ellerman 2018-05-02 219 pr_warn("Back trace of paca->saved_r1 (0x%016llx) (possibly stale):\n", p->saved_r1); 9cb8f069deeed7 Dmitry Safonov 2020-06-08 220 show_stack(p->__current, (unsigned long *)p->saved_r1, KERN_WARNING); 5cc05910f26e6f Michael Ellerman 2018-05-02 221 } 5cc05910f26e6f Michael Ellerman 2018-05-02 222 } 5cc05910f26e6f Michael Ellerman 2018-05-02 223 5cc05910f26e6f Michael Ellerman 2018-05-02 224 void arch_trigger_cpumask_backtrace(const cpumask_t *mask, bool exclude_self) 5cc05910f26e6f Michael Ellerman 2018-05-02 225 { 5cc05910f26e6f Michael Ellerman 2018-05-02 @226 nmi_trigger_cpumask_backtrace(mask, exclude_self, raise_backtrace_ipi); :::::: The code at line 171 was first introduced by commit :::::: 5cc05910f26e6fd6da15f052f86f6150e4b91664 powerpc/64s: Wire up arch_trigger_cpumask_backtrace() :::::: TO: Michael Ellerman :::::: CC: Michael Ellerman --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org