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 019F0C6FD18 for ; Sat, 22 Apr 2023 11:19:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229575AbjDVLTt (ORCPT ); Sat, 22 Apr 2023 07:19:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33332 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbjDVLTr (ORCPT ); Sat, 22 Apr 2023 07:19:47 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B71D11BDA for ; Sat, 22 Apr 2023 04:19:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1682162386; x=1713698386; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=+EVsdeVWlcugnqDpDcwqF5ABdA1G/6ft2d3YeGRsGVk=; b=mmyhVjZvA3oJtm7Y2PDTKc6n7787fyFV9dZPhOJg2XZZW+zn9uMeXwqF V6iYE9ooBSwA2qEdHXkPWquLIvCFNS/M3oyY2aWh1tf6dtKu2zO1cHi/i RcXyaOcyf6ssffTeSUeS3fg95Z+NjIECSS9tcnIno1UFE1hU7P/EW6kyw GprZnlhmrI5HaAH4lcL046I4odtZsBW2Rn6HzT/tbqZU/VRYWzDVRSGI2 Q1oPsX6RFGxHrnvxlebdVyiQtFWq24XGwzjch4g6SRfzLqq0MN72aj3Kn HhI/x2UwZ8yxoiXDfNzldcwFkZTviWPRXb4mXSxXZj+sT4pi4H7hxqsN5 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10687"; a="343633985" X-IronPort-AV: E=Sophos;i="5.99,218,1677571200"; d="scan'208";a="343633985" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Apr 2023 04:19:46 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10687"; a="816704438" X-IronPort-AV: E=Sophos;i="5.99,218,1677571200"; d="scan'208";a="816704438" Received: from lkp-server01.sh.intel.com (HELO b613635ddfff) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 22 Apr 2023 04:19:43 -0700 Received: from kbuild by b613635ddfff with local (Exim 4.96) (envelope-from ) id 1pqBHK-000hGO-1B; Sat, 22 Apr 2023 11:19:42 +0000 Date: Sat, 22 Apr 2023 19:18:55 +0800 From: kernel test robot To: Oscar Salvador , Andrew Morton Cc: oe-kbuild-all@lists.linux.dev, Linux Memory Management List , linux-kernel@vger.kernel.org, Michal Hocko , Vlastimil Babka , Eric Dumazet , Waiman Long , Suren Baghdasaryan , Marco Elver , Andrey Konovalov , Alexander Potapenko , Oscar Salvador Subject: Re: [PATCH v4 2/3] mm, page_owner: Add page_owner_stacks file to print out only stacks and their counte Message-ID: <202304221906.CKlcyd2r-lkp@intel.com> References: <20230421101415.5734-3-osalvador@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230421101415.5734-3-osalvador@suse.de> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Oscar, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.3-rc7] [cannot apply to akpm-mm/mm-everything next-20230421] [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/Oscar-Salvador/lib-stackdepot-Add-a-refcount-field-in-stack_record/20230421-181709 base: linus/master patch link: https://lore.kernel.org/r/20230421101415.5734-3-osalvador%40suse.de patch subject: [PATCH v4 2/3] mm, page_owner: Add page_owner_stacks file to print out only stacks and their counte config: x86_64-randconfig-m001 (https://download.01.org/0day-ci/archive/20230422/202304221906.CKlcyd2r-lkp@intel.com/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202304221906.CKlcyd2r-lkp@intel.com/ smatch warnings: lib/stackdepot.c:558 stack_print() warn: unsigned 'stack->size' is never less than zero. vim +558 lib/stackdepot.c 551 552 int stack_print(struct seq_file *m, void *v) 553 { 554 char *buf; 555 int ret = 0; 556 struct stack_record *stack =v; 557 > 558 if (!stack->size || stack->size < 0 || 559 stack->size > PAGE_SIZE || stack->handle.valid != 1 || 560 refcount_read(&stack->count) < 1) 561 return 0; 562 563 buf = kzalloc(PAGE_SIZE, GFP_KERNEL); 564 ret += stack_trace_snprint(buf, PAGE_SIZE, stack->entries, stack->size, 0); 565 scnprintf(buf + ret, PAGE_SIZE - ret, "stack count: %d\n\n", 566 refcount_read(&stack->count)); 567 seq_printf(m, buf); 568 seq_puts(m, "\n\n"); 569 kfree(buf); 570 571 return 0; 572 } 573 #endif 574 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests