From patchwork Wed Jan 8 06:52:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Aneesh Kumar K.V" X-Patchwork-Id: 11322973 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E1A2A139A for ; Wed, 8 Jan 2020 06:52:56 +0000 (UTC) Received: from ml01.01.org (ml01.01.org [198.145.21.10]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C9A772070E for ; Wed, 8 Jan 2020 06:52:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C9A772070E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-nvdimm-bounces@lists.01.org Received: from ml01.vlan13.01.org (localhost [IPv6:::1]) by ml01.01.org (Postfix) with ESMTP id CB93510097DC1; Tue, 7 Jan 2020 22:56:15 -0800 (PST) Received-SPF: Pass (mailfrom) identity=mailfrom; client-ip=148.163.158.5; helo=mx0a-001b2d01.pphosted.com; envelope-from=aneesh.kumar@linux.ibm.com; receiver= Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ml01.01.org (Postfix) with ESMTPS id 0980710097DAD for ; Tue, 7 Jan 2020 22:56:13 -0800 (PST) Received: from pps.filterd (m0098416.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 0086qqEN180087; Wed, 8 Jan 2020 01:52:53 -0500 Received: from ppma02dal.us.ibm.com (a.bd.3ea9.ip4.static.sl-reverse.com [169.62.189.10]) by mx0b-001b2d01.pphosted.com with ESMTP id 2xctgqedem-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Jan 2020 01:52:52 -0500 Received: from pps.filterd (ppma02dal.us.ibm.com [127.0.0.1]) by ppma02dal.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 0086pG6I021550; Wed, 8 Jan 2020 06:52:39 GMT Received: from b03cxnp08027.gho.boulder.ibm.com (b03cxnp08027.gho.boulder.ibm.com [9.17.130.19]) by ppma02dal.us.ibm.com with ESMTP id 2xajb72ah9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 08 Jan 2020 06:52:39 +0000 Received: from b03ledav003.gho.boulder.ibm.com (b03ledav003.gho.boulder.ibm.com [9.17.130.234]) by b03cxnp08027.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0086qcen52363758 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 8 Jan 2020 06:52:38 GMT Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0A7C06A047; Wed, 8 Jan 2020 06:52:38 +0000 (GMT) Received: from b03ledav003.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 87F3E6A04D; Wed, 8 Jan 2020 06:52:36 +0000 (GMT) Received: from skywalker.in.ibm.com (unknown [9.204.201.20]) by b03ledav003.gho.boulder.ibm.com (Postfix) with ESMTP; Wed, 8 Jan 2020 06:52:36 +0000 (GMT) From: "Aneesh Kumar K.V" To: dan.j.williams@intel.com Subject: [PATCH v3 4/6] libnvdimm/namespace: Add debug check while initializing namespace resource size. Date: Wed, 8 Jan 2020 12:22:17 +0530 Message-Id: <20200108065219.171221-4-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200108065219.171221-1-aneesh.kumar@linux.ibm.com> References: <20200108065219.171221-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-01-08_01:2020-01-07,2020-01-08 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 priorityscore=1501 spamscore=0 malwarescore=0 impostorscore=0 mlxlogscore=999 lowpriorityscore=0 suspectscore=1 mlxscore=0 adultscore=0 clxscore=1015 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-2001080058 Message-ID-Hash: SMAYHEFCYLTOJDDPPO4Y2Q5EWBCSI46K X-Message-ID-Hash: SMAYHEFCYLTOJDDPPO4Y2Q5EWBCSI46K X-MailFrom: aneesh.kumar@linux.ibm.com X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation CC: linux-nvdimm@lists.01.org, "Aneesh Kumar K.V" X-Mailman-Version: 3.1.1 Precedence: list List-Id: "Linux-nvdimm developer list." Archived-At: List-Archive: List-Help: List-Post: List-Subscribe: List-Unsubscribe: This should enable us to catch if we are initializing the namespace with a wrong size. Signed-off-by: Aneesh Kumar K.V --- drivers/nvdimm/namespace_devs.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/nvdimm/namespace_devs.c b/drivers/nvdimm/namespace_devs.c index 8567d8969014..99e6140bb19d 100644 --- a/drivers/nvdimm/namespace_devs.c +++ b/drivers/nvdimm/namespace_devs.c @@ -941,6 +941,18 @@ static void nd_namespace_pmem_set_resource(struct nd_region *nd_region, out: res->start = nd_region->ndr_start + offset; res->end = res->start + size - 1; +#ifdef CONFIG_DEBUG_VM + if (size) { + unsigned long map_size; + + map_size = nvdimm_validate_namespace_size(nd_region, size, arch_namespace_align_size()); + WARN_ON(map_size); + + map_size = nvdimm_validate_namespace_size(nd_region, res->start, arch_namespace_align_size()); + WARN_ON(map_size); + + } +#endif } static bool uuid_not_set(const u8 *uuid, struct device *dev, const char *where)