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 4CE16C433FE for ; Fri, 26 Nov 2021 06:31:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358846AbhKZGev (ORCPT ); Fri, 26 Nov 2021 01:34:51 -0500 Received: from mga12.intel.com ([192.55.52.136]:13217 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242483AbhKZGct (ORCPT ); Fri, 26 Nov 2021 01:32:49 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10179"; a="215642236" X-IronPort-AV: E=Sophos;i="5.87,265,1631602800"; d="scan'208";a="215642236" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Nov 2021 22:24:19 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,265,1631602800"; d="scan'208";a="475817045" Received: from lkp-server02.sh.intel.com (HELO 9e1e9f9b3bcb) ([10.239.97.151]) by orsmga002.jf.intel.com with ESMTP; 25 Nov 2021 22:24:16 -0800 Received: from kbuild by 9e1e9f9b3bcb with local (Exim 4.92) (envelope-from ) id 1mqUed-0007f2-QC; Fri, 26 Nov 2021 06:24:15 +0000 Date: Fri, 26 Nov 2021 14:23:35 +0800 From: kernel test robot To: cgel.zte@gmail.com, jiri@nvidia.com Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Lv Ruyi , Zeal Robot Subject: Re: [PATCH] devlink: use min() to make code cleaner Message-ID: <202111261406.iXRaBqLo-lkp@intel.com> References: <20211125071414.53147-1-lv.ruyi@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20211125071414.53147-1-lv.ruyi@zte.com.cn> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.16-rc2 next-20211125] [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] url: https://github.com/0day-ci/linux/commits/cgel-zte-gmail-com/devlink-use-min-to-make-code-cleaner/20211125-151715 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5f53fa508db098c9d372423a6dac31c8a5679cdf config: riscv-buildonly-randconfig-r002-20211125 (https://download.01.org/0day-ci/archive/20211126/202111261406.iXRaBqLo-lkp@intel.com/config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 0332d105b9ad7f1f0ffca7e78b71de8b3a48f158) 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 # install riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/836e00794d541adc38bfd77e1714579f2223a231 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review cgel-zte-gmail-com/devlink-use-min-to-make-code-cleaner/20211125-151715 git checkout 836e00794d541adc38bfd77e1714579f2223a231 # save the config file to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> net/core/devlink.c:5762:15: warning: comparison of distinct pointer types ('typeof (end_offset - curr_offset) *' (aka 'unsigned long long *') and 'typeof (256) *' (aka 'int *')) [-Wcompare-distinct-pointer-types] data_size = min(end_offset - curr_offset, DEVLINK_REGION_READ_CHUNK_SIZE); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:45:19: note: expanded from macro 'min' #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp' __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~~~~~~~ include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp' (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~~~~~~~ include/linux/minmax.h:20:28: note: expanded from macro '__typecheck' (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ 1 warning generated. vim +5762 net/core/devlink.c 5737 5738 static int devlink_nl_region_read_snapshot_fill(struct sk_buff *skb, 5739 struct devlink *devlink, 5740 struct devlink_region *region, 5741 struct nlattr **attrs, 5742 u64 start_offset, 5743 u64 end_offset, 5744 u64 *new_offset) 5745 { 5746 struct devlink_snapshot *snapshot; 5747 u64 curr_offset = start_offset; 5748 u32 snapshot_id; 5749 int err = 0; 5750 5751 *new_offset = start_offset; 5752 5753 snapshot_id = nla_get_u32(attrs[DEVLINK_ATTR_REGION_SNAPSHOT_ID]); 5754 snapshot = devlink_region_snapshot_get_by_id(region, snapshot_id); 5755 if (!snapshot) 5756 return -EINVAL; 5757 5758 while (curr_offset < end_offset) { 5759 u32 data_size; 5760 u8 *data; 5761 > 5762 data_size = min(end_offset - curr_offset, DEVLINK_REGION_READ_CHUNK_SIZE); 5763 5764 data = &snapshot->data[curr_offset]; 5765 err = devlink_nl_cmd_region_read_chunk_fill(skb, devlink, 5766 data, data_size, 5767 curr_offset); 5768 if (err) 5769 break; 5770 5771 curr_offset += data_size; 5772 } 5773 *new_offset = curr_offset; 5774 5775 return err; 5776 } 5777 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org