From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 2C106D53C for ; Thu, 12 Oct 2023 20:42:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="LhMEs1Pp" Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B5EAD7; Thu, 12 Oct 2023 13:42:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697143349; x=1728679349; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=grZVskJc6ajq0UaMPLY1+vxdNrKtPGrIR2HY2iTkC6c=; b=LhMEs1PpBrYA9bQkwuqrFDZrd4SocdTJoTV7BaFuUyYDQK2tcpCnS+mI JKIwntNCpJ8Kph0htB2ByC7QyS9h+z70drOjbgXdPyYFNIDtKHNzEdrjz NV+u21jzwaRLrM5M0CKW7l65/DZfD252ib2pbbEmkpDvRf3pePEBzspNC 7LOee5erNYibB8XtO1iScuTW5TKuQCsR3sm3xgRggK3xaE97Lc6/fv5qL XS6tZnXfZPO14LX6Y5ps6o8IZ8xL5KpX6130pbHUgyiBhbgs1Pz9UgQJ2 2Oh2g4qSxjDHZfz7YfwUVat8zEZnITrpRWclk9TVeitj/qS1soiJNLXmL w==; X-IronPort-AV: E=McAfee;i="6600,9927,10861"; a="375385887" X-IronPort-AV: E=Sophos;i="6.03,219,1694761200"; d="scan'208";a="375385887" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Oct 2023 13:42:09 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10861"; a="824755431" X-IronPort-AV: E=Sophos;i="6.03,219,1694761200"; d="scan'208";a="824755431" Received: from lkp-server02.sh.intel.com (HELO f64821696465) ([10.239.97.151]) by fmsmga004.fm.intel.com with ESMTP; 12 Oct 2023 13:42:05 -0700 Received: from kbuild by f64821696465 with local (Exim 4.96) (envelope-from ) id 1qr2VP-0003rZ-2F; Thu, 12 Oct 2023 20:42:03 +0000 Date: Fri, 13 Oct 2023 04:41:38 +0800 From: kernel test robot To: Tianyi Liu , seanjc@google.com, pbonzini@redhat.com, peterz@infradead.org, mingo@redhat.com, acme@kernel.org Cc: oe-kbuild-all@lists.linux.dev, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org, mark.rutland@arm.com, alexander.shishkin@linux.intel.com, jolsa@kernel.org, namhyung@kernel.org, irogers@google.com, adrian.hunter@intel.com, Tianyi Liu Subject: Re: [PATCH v2 4/5] perf kvm: Support sampling guest callchains Message-ID: <202310130419.cIkNaYZm-lkp@intel.com> References: Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Hi Tianyi, kernel test robot noticed the following build warnings: [auto build test WARNING on 8a749fd1a8720d4619c91c8b6e7528c0a355c0aa] url: https://github.com/intel-lab-lkp/linux/commits/Tianyi-Liu/KVM-Add-arch-specific-interfaces-for-sampling-guest-callchains/20231008-230042 base: 8a749fd1a8720d4619c91c8b6e7528c0a355c0aa patch link: https://lore.kernel.org/r/SY4P282MB108433024762F1F292D47C2A9DCFA%40SY4P282MB1084.AUSP282.PROD.OUTLOOK.COM patch subject: [PATCH v2 4/5] perf kvm: Support sampling guest callchains config: i386-randconfig-061-20231012 (https://download.01.org/0day-ci/archive/20231013/202310130419.cIkNaYZm-lkp@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231013/202310130419.cIkNaYZm-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/202310130419.cIkNaYZm-lkp@intel.com/ sparse warnings: (new ones prefixed by >>) >> arch/x86/events/core.c:2808:52: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got struct stack_frame *const * @@ arch/x86/events/core.c:2808:52: sparse: expected void *addr arch/x86/events/core.c:2808:52: sparse: got struct stack_frame *const * >> arch/x86/events/core.c:2811:52: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got unsigned long const * @@ arch/x86/events/core.c:2811:52: sparse: expected void *addr arch/x86/events/core.c:2811:52: sparse: got unsigned long const * >> arch/x86/events/core.c:2784:44: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got unsigned int const * @@ arch/x86/events/core.c:2784:44: sparse: expected void *addr arch/x86/events/core.c:2784:44: sparse: got unsigned int const * arch/x86/events/core.c:2787:44: sparse: sparse: incorrect type in argument 1 (different modifiers) @@ expected void *addr @@ got unsigned int const * @@ arch/x86/events/core.c:2787:44: sparse: expected void *addr arch/x86/events/core.c:2787:44: sparse: got unsigned int const * vim +2808 arch/x86/events/core.c 2775 2776 static inline void 2777 perf_callchain_guest32(struct perf_callchain_entry_ctx *entry) 2778 { 2779 struct stack_frame_ia32 frame; 2780 const struct stack_frame_ia32 *fp; 2781 2782 fp = (void *)perf_guest_get_frame_pointer(); 2783 while (fp && entry->nr < entry->max_stack) { > 2784 if (!perf_guest_read_virt(&fp->next_frame, &frame.next_frame, 2785 sizeof(frame.next_frame))) 2786 break; 2787 if (!perf_guest_read_virt(&fp->return_address, &frame.return_address, 2788 sizeof(frame.return_address))) 2789 break; 2790 perf_callchain_store(entry, frame.return_address); 2791 fp = (void *)frame.next_frame; 2792 } 2793 } 2794 2795 void 2796 perf_callchain_guest(struct perf_callchain_entry_ctx *entry) 2797 { 2798 struct stack_frame frame; 2799 const struct stack_frame *fp; 2800 unsigned int guest_state; 2801 2802 guest_state = perf_guest_state(); 2803 perf_callchain_store(entry, perf_guest_get_ip()); 2804 2805 if (guest_state & PERF_GUEST_64BIT) { 2806 fp = (void *)perf_guest_get_frame_pointer(); 2807 while (fp && entry->nr < entry->max_stack) { > 2808 if (!perf_guest_read_virt(&fp->next_frame, &frame.next_frame, 2809 sizeof(frame.next_frame))) 2810 break; > 2811 if (!perf_guest_read_virt(&fp->return_address, &frame.return_address, 2812 sizeof(frame.return_address))) 2813 break; 2814 perf_callchain_store(entry, frame.return_address); 2815 fp = (void *)frame.next_frame; 2816 } 2817 } else { 2818 perf_callchain_guest32(entry); 2819 } 2820 } 2821 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki