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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 78982C433FE for ; Tue, 9 Nov 2021 11:51:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 62DB26124D for ; Tue, 9 Nov 2021 11:51:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343650AbhKILyN (ORCPT ); Tue, 9 Nov 2021 06:54:13 -0500 Received: from mx0a-00069f02.pphosted.com ([205.220.165.32]:58692 "EHLO mx0a-00069f02.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343641AbhKILyM (ORCPT ); Tue, 9 Nov 2021 06:54:12 -0500 Received: from pps.filterd (m0246617.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1A9BaqVJ009033; Tue, 9 Nov 2021 11:51:12 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=date : from : to : cc : subject : message-id : content-type : mime-version; s=corp-2021-07-09; bh=dcHRxort5ehu7eeeeoNnvCijMYaMx2KKppSujsJYR1M=; b=m47Ly/m51cKzcCUWbrkm36JEv+pmD4MNfmee7Wq7BY/XJOO1zUadzEqh5WKmVhk5UgpP fWb5ARH+InGphLOowxhT+NtYwqA4S9CrJfJH5FtwW4d0YUd99i7G9S0C/ULdtkNI1o8b mWnsQ/f4FPLAsM+PCLgTqoaGY2geEbsmY2VUI452xJjiQfsd/2G+aWhW9q+ZRDH+ylZ7 BGJQNlebFQ3V43kShqoNjBUpllyYiUX9Uu7Ao/Nn/2l9/vXkrAeQLE2CZs1IxD0lYMCb QTfPsOLqrObn1E5v1qmxmucYD9alh+PccuKvHkstMG6U235ALLLjC3lKmNerqEshzixi Qw== Received: from userp3030.oracle.com (userp3030.oracle.com [156.151.31.80]) by mx0b-00069f02.pphosted.com with ESMTP id 3c6vkr2u5q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 09 Nov 2021 11:51:11 +0000 Received: from pps.filterd (userp3030.oracle.com [127.0.0.1]) by userp3030.oracle.com (8.16.1.2/8.16.1.2) with SMTP id 1A9BjNw5185536; Tue, 9 Nov 2021 11:51:10 GMT Received: from nam11-bn8-obe.outbound.protection.outlook.com (mail-bn8nam11lp2169.outbound.protection.outlook.com [104.47.58.169]) by userp3030.oracle.com with ESMTP id 3c5etvgu34-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 09 Nov 2021 11:51:10 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=bEGG9LA7An9LZhuQ7VCrXnxSsajtbhKS0zuf+Jjt3i85SqKUwZWJdUwjZadAVxNOkJv9VEcwjQX1pCPX/BsKM4MXMm46c6uDsuwasnsbwIEUulnNMxn9Qn1619dmZz+O8JFRDcKhqPVlUCh2aEGCgr8xLLcUhONKDpuDFHgjf/hkbzApjyUk1aR+mjkNKAb4CfC5N2VE0Ltv0f0+lC2h9abj4Dju7vRT1EuO91KuGwRuTs/yo+24c3VqDHr2WG/6jgRFgiFhB0E8Wf6KqBoJaPQ1t/Z178Ktw06nIPrTIouYNwK1KBwwHJZI44nNmT7rby2DR8J+SqBgMOyEGOUm0A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=dcHRxort5ehu7eeeeoNnvCijMYaMx2KKppSujsJYR1M=; b=PKJID6Z5P/g0OedtwzPK9I6BW1IzsH6mPZKlWMRu6IyMbNQyUngaze1wTJDtsaHZEo/EIATLWG0kvucN7SEpmg+uWw9oKZ1fxnGBnCUxZe1uokNb86zpIvQRpOVfyzF61aMq7y9PVIGPe3pQRRHGR+o3tu1yEb6dZN9rU8Ek1Ynzbyhns9ihjCTQohrlF5Ui/2wdY3Xo6/08jLFI20+jV1b9H03dwrhLbDvtGOAsQtCDfkPdLx3XX25SCrq4sE9XbjtrJQymh3TACQAPcBMhaYJrzeVJhubJFtM1Z/k+hfOB63DqIwkAkX/NwqpsvXh3dE/NNsT4rDJXSNnaiAmslg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=oracle.com; dmarc=pass action=none header.from=oracle.com; dkim=pass header.d=oracle.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.onmicrosoft.com; s=selector2-oracle-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=dcHRxort5ehu7eeeeoNnvCijMYaMx2KKppSujsJYR1M=; b=QSdZmefxV6vblNngNuqPID3JWsNXW/oyHv78nngz0KuumBtvoxQPlzSUhaTtCc3JJ/KHMqgrVl4cW7XJ0Gwu7TgYsTXqFU6UBNPiUudeJAGfhD5d1Hr6NlwiO4uegOoktCDRbjzy+7BKgpy36al49RE6o2D3Owp7rtFx0qJqpzE= Received: from MWHPR1001MB2365.namprd10.prod.outlook.com (2603:10b6:301:2d::28) by CO1PR10MB4500.namprd10.prod.outlook.com (2603:10b6:303:98::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4690.15; Tue, 9 Nov 2021 11:51:04 +0000 Received: from MWHPR1001MB2365.namprd10.prod.outlook.com ([fe80::d409:11b5:5eb2:6be9]) by MWHPR1001MB2365.namprd10.prod.outlook.com ([fe80::d409:11b5:5eb2:6be9%5]) with mapi id 15.20.4690.015; Tue, 9 Nov 2021 11:51:04 +0000 Date: Tue, 9 Nov 2021 14:50:51 +0300 From: Dan Carpenter To: Richard Weinberger , Stefan Schaeckeler Cc: linux-mtd@lists.infradead.org, kernel-janitors@vger.kernel.org Subject: [PATCH] ubifs: fix snprintf() length check Message-ID: <20211109115051.GD16587@kili> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.10.1 (2018-07-13) X-ClientProxiedBy: AS9PR0301CA0005.eurprd03.prod.outlook.com (2603:10a6:20b:468::9) To MWHPR1001MB2365.namprd10.prod.outlook.com (2603:10b6:301:2d::28) MIME-Version: 1.0 Received: from kili (102.222.70.114) by AS9PR0301CA0005.eurprd03.prod.outlook.com (2603:10a6:20b:468::9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4669.11 via Frontend Transport; Tue, 9 Nov 2021 11:51:00 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 78673eba-8cf2-4d90-596b-08d9a3773515 X-MS-TrafficTypeDiagnostic: CO1PR10MB4500: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MWHPR1001MB2365.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(366004)(86362001)(5660300002)(52116002)(9576002)(4744005)(186003)(508600001)(316002)(38350700002)(38100700002)(8676002)(33656002)(83380400001)(6496006)(8936002)(26005)(55016002)(110136005)(33716001)(66556008)(66946007)(956004)(66476007)(9686003)(6666004)(44832011)(1076003)(2906002)(4326008);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?mldsOrauW5hRYgQurUV2aG121iCtmOxXB1boPcI8HUgVvdYLyU5nMJIs4UhC?= =?us-ascii?Q?+l0CS8yzAepjvtDk2+dGrQG+0WBBUEObjy9nm/HMKh5DW2kxZqnr93JsPpLw?= =?us-ascii?Q?uiJpzkYX1Ui3sjMrrq9gi0UsamdHdaRlViPM+tkG8izr6V1EziPpDz3kdMIv?= =?us-ascii?Q?5nPEgpcwRNq0xXlbTq+uBI0pwUcNb6SMUF52yTHbNXBPe1dExoaGlUdheHhe?= =?us-ascii?Q?ZYnJgmccc9bnUVUbCU8xdtnUNyl28H6R8dLiFbDyvVoLtqegMXWzNomjrqIN?= =?us-ascii?Q?xtQ2ogRANbEaMjH6qmzGoKKhmYwmR+Fjv/NMI9gUTbwY/1pRixENnFGtxtvi?= =?us-ascii?Q?f9GS3XX3wHIgSi4aTDxh/H1dSI/SSYZDN0exY3TXebiUUFPigoWpMsC2+NLm?= =?us-ascii?Q?eCvqC0ut14y/NsqiySt7BVp4Np3KDfw+WI+pqCYAMXmHxz3kRSU6abe9ryL+?= =?us-ascii?Q?36GBOBtF+MT+P+i33A2PPhjPXA1CkY/ioUgeVtmyeo3l9Eu39w1i/CXoDVdo?= =?us-ascii?Q?Y2z3r4bfySOqF5kSEuFYi+ulHJo+3OTwKC+ujzP8JhU0oHsv+UNQ9OAeWH5s?= =?us-ascii?Q?02cvnFewrvWr0LFsrHQrNK73LsSsL+xOYJGsuOi7VTmBQHlntjTDLdjazq/t?= =?us-ascii?Q?JgCdJ4+PEhC+Er7/4DxpHfTwVIAwn6k8Spxjbqg+zz3Pn03qeAN+hJEF6EE7?= =?us-ascii?Q?sB79nQQhnAQRM8CPx3BRYTuajbEp4PVcUHABEI7/FMuBGvb2vEHjmVsTSQgH?= =?us-ascii?Q?WLQ9w2MG7Wq1rVlgD8BYKLHHEdYdfXp4+YSv6NVofR5JczidGFp1YBVt5ncr?= =?us-ascii?Q?dMq9dIaUuiSQjDhKcLt+RBS+xeAB+Klk+/eo+kPapURL9dyd1A/6nSGmzs2+?= =?us-ascii?Q?nmwYNYoHSyk2uYThffe8wFy5hirfsJLxQDz7zXXYJocgtMyqn47Fila6BX6M?= =?us-ascii?Q?bGdlVD+xk48iRR//6o53JVTez75qtI9C+/K7cvHp6kwnuqq4FDCvuaCl49ny?= =?us-ascii?Q?04+qICKrCC+6DmmWWb3e5fRV6yGIw4ZEUOvXXMPxhk5wXUR9A0bNiBY2GhEq?= =?us-ascii?Q?2s+f8etkii6YgY/n9ysnP32ZT+/fZcRP0idFYrLmfGg2VzSTfqh9GqpX9Bx3?= =?us-ascii?Q?ITr2B5C20nHFnV82G6eHlPgFs33HEDls9g+49x0W/T3/FW0EgSGwxQzCvRVv?= =?us-ascii?Q?qJ2VYoKy27YTBlUqxadMNol1FQu4sT0MaDywzdwlbq0CPphoRkquOSInKc22?= =?us-ascii?Q?y7A/xkC7ltb4Su3JLoJJBp3y5o5ahOsaAfDX3tbT4hFi4/cqybdbbYCmmqqn?= =?us-ascii?Q?QyaESyUnFag5z2NHSTEXfiXrYCmH+u9OpnxR2UtKzkx7FDh7EPd3CyaS5J7C?= =?us-ascii?Q?NqOmtOZDrCCJWuf3ahzA1hWmo9CQv57UWNb5WJivZkRomNSaGjExJWkFOSRM?= =?us-ascii?Q?3Z2IieZEdEnn3P9zgCEkXbtMKCjglqc09OY6fy6gGyWV1hJPMj8ZB59PjIQj?= =?us-ascii?Q?cW8z6SA5EEoElLI2jBidq2bQEQNWwuyEogOvm8kCF5CSYcOL7C2yiLdCJkuY?= =?us-ascii?Q?Ol3mp1NNQ7kJ0nmH42DDOCrf4or1hB90wolWiFfEIo1QQwXFxy/oPHSemMLm?= =?us-ascii?Q?fozIQ6SNbqRVCKLl/OODvOzeNHOUrhC8SJ+QKXFkyxP7+XxqcYpWzSQ3lrxM?= =?us-ascii?Q?RfKV3bJkDShC/qQ04YGb4p6yzHQ=3D?= X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 78673eba-8cf2-4d90-596b-08d9a3773515 X-MS-Exchange-CrossTenant-AuthSource: MWHPR1001MB2365.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 09 Nov 2021 11:51:03.9321 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Yon9+eABcJhwYUQooXm00f1M1VlCLpTooKYKJ3u88FjCoI5Y2CVpnPeZaIPIOIjyE02AiwJ9Y+JzFCI6R2y+HJsXcfzuUVo+3LqaO0IJFtQ= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR10MB4500 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10162 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 phishscore=0 mlxscore=0 suspectscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111090071 X-Proofpoint-GUID: IGGCkCIsGN0zY7VDE_6i1YRRl7D5AQ5M X-Proofpoint-ORIG-GUID: IGGCkCIsGN0zY7VDE_6i1YRRl7D5AQ5M Precedence: bulk List-ID: X-Mailing-List: kernel-janitors@vger.kernel.org The snprintf() function returns the number of bytes (not including the NUL terminator) which would have been printed if there were enough space. So it can be greater than UBIFS_DFS_DIR_LEN. And actually if it equals UBIFS_DFS_DIR_LEN then that's okay so this check is too strict. Fixes: 9a620291fc01 ("ubifs: Export filesystem error counters") Signed-off-by: Dan Carpenter --- fs/ubifs/sysfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ubifs/sysfs.c b/fs/ubifs/sysfs.c index 0eb3d7d12450..7acc5a74e5fa 100644 --- a/fs/ubifs/sysfs.c +++ b/fs/ubifs/sysfs.c @@ -100,7 +100,7 @@ int ubifs_sysfs_register(struct ubifs_info *c) n = snprintf(dfs_dir_name, UBIFS_DFS_DIR_LEN + 1, UBIFS_DFS_DIR_NAME, c->vi.ubi_num, c->vi.vol_id); - if (n == UBIFS_DFS_DIR_LEN) { + if (n > UBIFS_DFS_DIR_LEN) { /* The array size is too small */ ret = -EINVAL; goto out_free; -- 2.20.1