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 8E839C43334 for ; Mon, 13 Jun 2022 06:51:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238272AbiFMGvS (ORCPT ); Mon, 13 Jun 2022 02:51:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59950 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238392AbiFMGvD (ORCPT ); Mon, 13 Jun 2022 02:51:03 -0400 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9799F1EAE7 for ; Sun, 12 Jun 2022 23:50:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1655103006; x=1686639006; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=RGtR00YXznzblbZw6feUnIn4iE2iFhjqHOStGqIumPY=; b=d9tZu/eWNuxPSenGteO1BzHMy8LhFAsCllGFcW5oNWJ8D2RtgPFa6WTi ItFhINYi0R9rn0SYr/Fpp7gfVlkAVCGuAjtuLKfVDCRCLK3y/E2gehlUv BospXCSK2vsWiPwScmY7dKgRDiB3VvTbJc5gkOZxkmmg5baePoc7GMXX7 CNvtXCmTCf11HSVWeZJe2AXhdbEnTVekIcNYXsGcKMNRjMT3sg3kzxNXb nYnkwpYpW3cpaNpiLID6bRlcdSUuZFCTqGFByZhBALLRWbpSjGp1XNGQV yBhqCQQnWAttoFVWRRPAOkyd2wgRdKAaAzHQOA9wo3PNvTC2hDlme2xbj g==; X-IronPort-AV: E=McAfee;i="6400,9594,10376"; a="339861047" X-IronPort-AV: E=Sophos;i="5.91,296,1647327600"; d="scan'208";a="339861047" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jun 2022 23:49:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,296,1647327600"; d="scan'208";a="567782758" Received: from lkp-server01.sh.intel.com (HELO 60dabacc1df6) ([10.239.97.150]) by orsmga002.jf.intel.com with ESMTP; 12 Jun 2022 23:49:47 -0700 Received: from kbuild by 60dabacc1df6 with local (Exim 4.95) (envelope-from ) id 1o0dtS-000Kaj-UI; Mon, 13 Jun 2022 06:49:46 +0000 Date: Mon, 13 Jun 2022 14:49:29 +0800 From: kernel test robot To: Kalesh Singh , mark.rutland@arm.com, broonie@kernel.org, maz@kernel.org Cc: kbuild-all@lists.01.org, will@kernel.org, qperret@google.com, tabba@google.com, surenb@google.com, tjmercier@google.com, kernel-team@android.com, Kalesh Singh , James Morse , Alexandru Elisei , Suzuki K Poulose , Catalin Marinas , Masami Hiramatsu , Alexei Starovoitov , "Madhavan T. Venkataraman" , Peter Zijlstra , Andrew Jones , Keir Fraser , Zenghui Yu , Kefeng Wang , Ard Biesheuvel , Oliver Upton , linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 5/5] KVM: arm64: Unwind and dump nVHE hypervisor stacktrace Message-ID: <202206131423.8tjrMBgk-lkp@intel.com> References: <20220607165105.639716-6-kaleshsingh@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220607165105.639716-6-kaleshsingh@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Kalesh, Thank you for the patch! Yet something to improve: [auto build test ERROR on f2906aa863381afb0015a9eb7fefad885d4e5a56] url: https://github.com/intel-lab-lkp/linux/commits/Kalesh-Singh/KVM-nVHE-Hypervisor-stack-unwinder/20220608-011351 base: f2906aa863381afb0015a9eb7fefad885d4e5a56 config: arm64-randconfig-c024-20220612 (https://download.01.org/0day-ci/archive/20220613/202206131423.8tjrMBgk-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 11.3.0 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://github.com/intel-lab-lkp/linux/commit/ac1ce397ffe5b05df06cdb56a30db4099c7428ec git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kalesh-Singh/KVM-nVHE-Hypervisor-stack-unwinder/20220608-011351 git checkout ac1ce397ffe5b05df06cdb56a30db4099c7428ec # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot All errors (new ones prefixed by >>): aarch64-linux-ld: arch/arm64/kernel/stacktrace.o: in function `hyp_dump_backtrace': >> arch/arm64/kernel/stacktrace.c:254: undefined reference to `kvm_arm_hyp_stacktrace_page' aarch64-linux-ld: arch/arm64/kernel/stacktrace.o: relocation R_AARCH64_ADR_PREL_PG_HI21 against symbol `kvm_arm_hyp_stacktrace_page' which may bind externally can not be used when making a shared object; recompile with -fPIC arch/arm64/kernel/stacktrace.c:254:(.text+0x634): dangerous relocation: unsupported relocation >> aarch64-linux-ld: arch/arm64/kernel/stacktrace.c:254: undefined reference to `kvm_arm_hyp_stacktrace_page' pahole: .tmp_vmlinux.btf: No such file or directory .btf.vmlinux.bin.o: file not recognized: file format not recognized vim +254 arch/arm64/kernel/stacktrace.c 246 247 /** 248 * Symbolizes and dumps the hypervisor backtrace from the shared 249 * stacktrace page. 250 */ 251 noinline notrace void hyp_dump_backtrace(unsigned long hyp_offset) 252 { 253 unsigned long *stacktrace_pos = > 254 (unsigned long *)*this_cpu_ptr(&kvm_arm_hyp_stacktrace_page); 255 unsigned long va_mask = GENMASK_ULL(vabits_actual - 1, 0); 256 unsigned long pc = *stacktrace_pos++; 257 258 kvm_err("nVHE HYP call trace:\n"); 259 260 while (pc) { 261 pc &= va_mask; /* Mask tags */ 262 pc += hyp_offset; /* Convert to kern addr */ 263 kvm_err("[<%016lx>] %pB\n", pc, (void *)pc); 264 pc = *stacktrace_pos++; 265 } 266 267 kvm_err("---- end of nVHE HYP call trace ----\n"); 268 } 269 #else /* __KVM_NVHE_HYPERVISOR__ */ 270 DEFINE_PER_CPU(unsigned long [PAGE_SIZE/sizeof(long)], overflow_stack) 271 __aligned(16); 272 -- 0-DAY CI Kernel Test Service https://01.org/lkp