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Tue, 24 Aug 2021 07:58:30 +0000 Date: Tue, 24 Aug 2021 10:58:19 +0300 From: Dan Carpenter To: almaz.alexandrovich@paragon-software.com Cc: ntfs3@lists.linux.dev Subject: [bug report] fs/ntfs3: Add initialization of super block Message-ID: <20210824075819.GA13628@kili> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) X-ClientProxiedBy: ZR0P278CA0084.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:22::17) To MWHPR1001MB2365.namprd10.prod.outlook.com (2603:10b6:301:2d::28) Precedence: bulk X-Mailing-List: ntfs3@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from kili (62.8.83.99) by ZR0P278CA0084.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:22::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4436.19 via Frontend Transport; Tue, 24 Aug 2021 07:58:28 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 61f794cc-2eda-40e0-52c8-08d966d4f665 X-MS-TrafficTypeDiagnostic: MWHPR10MB1661: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8273; 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230 if (WARN_ON(off >= data_size)) { 231 /* looks like filesystem error */ 232 return -EINVAL; 233 } 234 235 valid_size = le64_to_cpu(b->nres.valid_size); 236 237 bh = ntfs_bread_run(sbi, &indx->bitmap_run, off); --> 238 if (!bh) 239 return -EIO; 240 241 if (IS_ERR(bh)) This is not a bug, but it is wrong style. When a function returns both error pointers and NULL then the NULL return is means the feature is disabled. It's not an error. Just that the feature is turned off deliberately in the Kconfig or whatever. Don't print an error message, just continue with the feature disabled as the admin has requested. But here NULL is just an error. The ntfs_bread_run() should do: bh = ntfs_bread(); if (!bh) return ERR_PTR(-EIO); return bh; 242 return PTR_ERR(bh); 243 244 bbuf->bh = bh; 245 regards, dan carpenter