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 F20F4C4332F for ; Wed, 9 Feb 2022 04:08:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346132AbiBIEIC (ORCPT ); Tue, 8 Feb 2022 23:08:02 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46430 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347094AbiBIDjb (ORCPT ); Tue, 8 Feb 2022 22:39:31 -0500 Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2058DC06174F; Tue, 8 Feb 2022 19:39:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644377970; x=1675913970; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=UUr2oeyzfQDDRtI6hlTLxPqoP/+EpMIGE8+TwWUBk0o=; b=ez4stKHhDDVl6yT1xk5D8g+3iUmg6vrCg8TAcWNDTtW/xjyZoVHkRtZ5 AkML9UxVY1ZAhD/aTHvD0/3HXMB2dpsSCRydZH82ctlxsBCTB2U96Xgky 6CE1Ffq0Udon1BOWvX0OHPNOF3GER6T7MJTggDfsPXGg+ZBoP1ivFgiWr 9Lnn0vGK9LR2fXDionZhp+FoMQGhojvuhSQgfNXqQzgFyAM2aPkT8ECtb 6PukQzvp23a5vkpBXcCI7xCABAid6MlSUqkj0wlwHZfUEVnV2FJnnBTCw xpNL6Zk1jhro343tWtHiX6vAKur/bWm7Bstd/yrOxlOjFHfvU46ZNM2g1 w==; X-IronPort-AV: E=McAfee;i="6200,9189,10252"; a="335513823" X-IronPort-AV: E=Sophos;i="5.88,354,1635231600"; d="scan'208";a="335513823" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Feb 2022 19:39:29 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,354,1635231600"; d="scan'208";a="771204809" Received: from lkp-server01.sh.intel.com (HELO d95dc2dabeb1) ([10.239.97.150]) by fmsmga006.fm.intel.com with ESMTP; 08 Feb 2022 19:39:23 -0800 Received: from kbuild by d95dc2dabeb1 with local (Exim 4.92) (envelope-from ) id 1nHdpD-0001Al-6Z; Wed, 09 Feb 2022 03:39:23 +0000 Date: Wed, 9 Feb 2022 11:39:03 +0800 From: kernel test robot To: Nitesh Shetty , mpatocka@redhat.com Cc: kbuild-all@lists.01.org, javier@javigon.com, chaitanyak@nvidia.com, linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, dm-devel@redhat.com, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, axboe@kernel.dk, msnitzer@redhat.com, bvanassche@acm.org, martin.petersen@oracle.com, roland@purestorage.com, hare@suse.de, kbusch@kernel.org, hch@lst.de, Frederick.Knight@netapp.com, zach.brown@ni.com, osandov@fb.com, lsf-pc@lists.linux-foundation.org, djwong@kernel.org, josef@toxicpanda.com, clm@fb.com, dsterba@suse.com, tytso@mit.edu, jack@suse.com, joshi.k@samsung.com, arnav.dawn@samsung.com, nj.shetty@samsung.com Subject: Re: [PATCH v2 04/10] block: Introduce a new ioctl for copy Message-ID: <202202091048.qDQvi6ab-lkp@intel.com> References: <20220207141348.4235-5-nj.shetty@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220207141348.4235-5-nj.shetty@samsung.com> User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Hi Nitesh, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on axboe-block/for-next] [also build test WARNING on next-20220208] [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/Nitesh-Shetty/block-make-bio_map_kern-non-static/20220207-231407 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: i386-randconfig-c001 (https://download.01.org/0day-ci/archive/20220209/202202091048.qDQvi6ab-lkp@intel.com/config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot cocci warnings: (new ones prefixed by >>) >> block/ioctl.c:145:10-17: WARNING opportunity for memdup_user vim +145 block/ioctl.c 126 127 static int blk_ioctl_copy(struct block_device *bdev, fmode_t mode, 128 unsigned long arg) 129 { 130 struct copy_range crange, *ranges; 131 size_t payload_size = 0; 132 int ret; 133 134 if (!(mode & FMODE_WRITE)) 135 return -EBADF; 136 137 if (copy_from_user(&crange, (void __user *)arg, sizeof(crange))) 138 return -EFAULT; 139 140 if (unlikely(!crange.nr_range || crange.reserved || crange.nr_range >= MAX_COPY_NR_RANGE)) 141 return -EINVAL; 142 143 payload_size = (crange.nr_range * sizeof(struct range_entry)) + sizeof(crange); 144 > 145 ranges = kmalloc(payload_size, GFP_KERNEL); 146 if (!ranges) 147 return -ENOMEM; 148 149 if (copy_from_user(ranges, (void __user *)arg, payload_size)) { 150 ret = -EFAULT; 151 goto out; 152 } 153 154 ret = blkdev_issue_copy(bdev, ranges->nr_range, ranges->range_list, bdev, GFP_KERNEL, 0); 155 if (copy_to_user((void __user *)arg, ranges, payload_size)) 156 ret = -EFAULT; 157 out: 158 kfree(ranges); 159 return ret; 160 } 161 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org