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 845A2EB64DD for ; Thu, 20 Jul 2023 21:13:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229488AbjGTVNh (ORCPT ); Thu, 20 Jul 2023 17:13:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49776 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229451AbjGTVNg (ORCPT ); Thu, 20 Jul 2023 17:13:36 -0400 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9C361E52; Thu, 20 Jul 2023 14:13:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1689887614; x=1721423614; h=date:from:to:cc:subject:message-id:references: mime-version:content-transfer-encoding:in-reply-to; bh=F1bYz3hgit6KaUoqzvThCzYOIRPkgaYh6xO1/Oye1q0=; b=YRzK0Rp+7yKvH7ejEkrigFZCCAu5EEchsRPT1XUwNi878zGaco1zqfJZ pAoFEaAyndS8QQqLgqoqyg2e0TUn8iUbFYYsZDAmNrtlQ7yu6nP+lZIa8 QdQDE7aJcmpwWgEEc85N/Q9Pik45P/MN5Cw6GyhYlXR7lM/2L9N6BGqoU nkqoY1FbviqjwxhwG5vL9tFltfVswcGWlQ5aFlMXQ1FeVFz+mH132mAQv yRamRusw0W3QzM2VYkrl4ux1OjQePrc++byNufGrTAW78eCMgCNQ5Bnab JmHnzZVchWNrO8qTIvn4J+1WPC+v3AbNJ+24jUu0Hqz08wkAACSaLC7m2 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10777"; a="366900223" X-IronPort-AV: E=Sophos;i="6.01,219,1684825200"; d="scan'208";a="366900223" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2023 14:13:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10777"; a="727852971" X-IronPort-AV: E=Sophos;i="6.01,219,1684825200"; d="scan'208";a="727852971" Received: from lkp-server02.sh.intel.com (HELO 36946fcf73d7) ([10.239.97.151]) by fmsmga007.fm.intel.com with ESMTP; 20 Jul 2023 14:13:26 -0700 Received: from kbuild by 36946fcf73d7 with local (Exim 4.96) (envelope-from ) id 1qMaxV-0006WF-1t; Thu, 20 Jul 2023 21:13:17 +0000 Date: Fri, 21 Jul 2023 05:12:13 +0800 From: kernel test robot To: =?utf-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= , Muhammad Usama Anjum Cc: oe-kbuild-all@lists.linux.dev, Alex Sierra , Alexander Viro , Andrei Vagin , Andrew Morton , Linux Memory Management List , Axel Rasmussen , Christian Brauner , Cyrill Gorcunov , Dan Williams , Danylo Mocherniuk , David Hildenbrand , Greg KH , "Gustavo A . R . Silva" , "Liam R . Howlett" , Matthew Wilcox , =?utf-8?B?TWljaGHFgiBNaXJvc8WCYXc=?= , Mike Rapoport , Nadav Amit , Pasha Tatashin , Paul Gofman , Peter Xu , Shuah Khan , Suren Baghdasaryan , Vlastimil Babka , Yang Shi , Yun Zhou , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: Re: fs/proc/task_mmu: Implement IOCTL for efficient page table scanning Message-ID: <202307210528.2qgK1vwi-lkp@intel.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Hi Michał, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on linus/master v6.5-rc2 next-20230720] [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/Micha-Miros-aw/Re-fs-proc-task_mmu-Implement-IOCTL-for-efficient-page-table-scanning/20230721-033050 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/a0b5c6776b2ed91f78a7575649f8b100e58bd3a9.1689881078.git.mirq-linux%40rere.qmqm.pl patch subject: Re: fs/proc/task_mmu: Implement IOCTL for efficient page table scanning config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20230721/202307210528.2qgK1vwi-lkp@intel.com/config) compiler: mips-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230721/202307210528.2qgK1vwi-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/202307210528.2qgK1vwi-lkp@intel.com/ All warnings (new ones prefixed by >>): fs/proc/task_mmu.c: In function 'pagemap_scan_test_walk': fs/proc/task_mmu.c:1921:13: error: implicit declaration of function 'userfaultfd_wp_async'; did you mean 'userfaultfd_wp'? [-Werror=implicit-function-declaration] 1921 | if (userfaultfd_wp_async(vma) && userfaultfd_wp_use_markers(vma)) | ^~~~~~~~~~~~~~~~~~~~ | userfaultfd_wp fs/proc/task_mmu.c: In function 'pagemap_scan_init_bounce_buffer': >> fs/proc/task_mmu.c:2290:22: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] 2290 | p->vec_out = (void __user *)p->arg.vec; | ^ fs/proc/task_mmu.c: At top level: fs/proc/task_mmu.c:1967:13: warning: 'pagemap_scan_backout_range' defined but not used [-Wunused-function] 1967 | static void pagemap_scan_backout_range(struct pagemap_scan_private *p, | ^~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +2290 fs/proc/task_mmu.c 2264 2265 static int pagemap_scan_init_bounce_buffer(struct pagemap_scan_private *p) 2266 { 2267 if (!p->arg.vec_len) { 2268 /* 2269 * An arbitrary non-page-aligned sentinel value for 2270 * pagemap_scan_push_range(). 2271 */ 2272 p->cur_buf.start = p->cur_buf.end = ULLONG_MAX; 2273 return 0; 2274 } 2275 2276 /* 2277 * Allocate a smaller buffer to get output from inside the page 2278 * walk functions and walk the range in PAGEMAP_WALK_SIZE chunks. 2279 * The last range is always stored in p.cur_buf to allow coalescing 2280 * consecutive ranges that have the same categories returned across 2281 * walk_page_range() calls. 2282 */ 2283 p->vec_buf_len = min_t(size_t, PAGEMAP_WALK_SIZE >> PAGE_SHIFT, 2284 p->arg.vec_len - 1); 2285 p->vec_buf = kmalloc_array(p->vec_buf_len, sizeof(*p->vec_buf), 2286 GFP_KERNEL); 2287 if (!p->vec_buf) 2288 return -ENOMEM; 2289 > 2290 p->vec_out = (void __user *)p->arg.vec; 2291 2292 return 0; 2293 } 2294 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki