From patchwork Wed May 26 09:20:19 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Huang X-Patchwork-Id: 12281933 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC54CC4708A for ; Wed, 26 May 2021 14:35:51 +0000 (UTC) Received: from userp2120.oracle.com (userp2120.oracle.com [156.151.31.85]) (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 71A4161360 for ; Wed, 26 May 2021 14:35:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 71A4161360 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=ocfs2-devel-bounces@oss.oracle.com Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 14QEZgdn108132; Wed, 26 May 2021 14:35:50 GMT Received: from userp3020.oracle.com (userp3020.oracle.com [156.151.31.79]) by userp2120.oracle.com with ESMTP id 38ptkp951x-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 May 2021 14:35:50 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 14QEGFnl171100; Wed, 26 May 2021 14:35:49 GMT Received: from oss.oracle.com (oss-old-reserved.oracle.com [137.254.22.2]) by userp3020.oracle.com with ESMTP id 38qbqt9pxk-1 (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO); Wed, 26 May 2021 14:35:49 +0000 Received: from localhost ([127.0.0.1] helo=lb-oss.oracle.com) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1lludQ-0007Ld-Pr; Wed, 26 May 2021 07:35:48 -0700 Received: from aserp3020.oracle.com ([141.146.126.70]) by oss.oracle.com with esmtp (Exim 4.63) (envelope-from ) id 1llpYf-0000VK-LP for ocfs2-devel@oss.oracle.com; Wed, 26 May 2021 02:10:33 -0700 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 14Q972i9020838 for ; Wed, 26 May 2021 09:10:33 GMT Received: from userp2030.oracle.com (userp2030.oracle.com [156.151.31.89]) by aserp3020.oracle.com with ESMTP id 38rehcd65f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Wed, 26 May 2021 09:10:33 +0000 Received: from pps.filterd (userp2030.oracle.com [127.0.0.1]) by userp2030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 14Q93QSq008121 for ; Wed, 26 May 2021 09:10:32 GMT Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) by userp2030.oracle.com with ESMTP id 38rnjn73u7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 26 May 2021 09:10:30 +0000 Received: from dggems701-chm.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4FqlTG3KXMz1BQTF; Wed, 26 May 2021 17:07:30 +0800 (CST) Received: from dggema756-chm.china.huawei.com (10.1.198.198) by dggems701-chm.china.huawei.com (10.3.19.178) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Wed, 26 May 2021 17:10:22 +0800 Received: from localhost.localdomain (10.175.112.125) by dggema756-chm.china.huawei.com (10.1.198.198) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Wed, 26 May 2021 17:10:21 +0800 From: Chen Huang To: Michael Ellerman , Benjamin Herrenschmidt , Paul Mackerras , "Boris Ostrovsky" , Juergen Gross , Stefano Stabellini , Mark Fasheh , Joel Becker , Joseph Qi , Nathan Lynch , Andrew Donnellan , Alexey Kardashevskiy , Andrew Morton , Stephen Rothwell , "Jens Axboe" , Yang Yingliang , "Masahiro Yamada" , Dan Carpenter Date: Wed, 26 May 2021 09:20:19 +0000 Message-ID: <20210526092020.554341-2-chenhuang5@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210526092020.554341-1-chenhuang5@huawei.com> References: <20210526092020.554341-1-chenhuang5@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.112.125] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggema756-chm.china.huawei.com (10.1.198.198) X-CFilter-Loop: Reflected X-PDR: PASS X-Source-IP: 45.249.212.190 X-ServerName: szxga04-in.huawei.com X-Proofpoint-SPF-Result: pass X-Proofpoint-SPF-Record: v=spf1 ip4:45.249.212.32 ip4:45.249.212.35 ip4:45.249.212.255 ip4:45.249.212.187/29 ip4:45.249.212.191 ip4:185.176.76.210 ip4:168.195.93.47 ip4:103.69.140.247 ip4:185.176.79.56 -all X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9995 signatures=668682 X-Proofpoint-Spam-Details: rule=tap_notspam policy=tap score=0 mlxscore=0 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 impostorscore=0 suspectscore=0 clxscore=255 mlxlogscore=999 priorityscore=288 lowpriorityscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105260060 X-Spam: Clean X-Mailman-Approved-At: Wed, 26 May 2021 07:35:47 -0700 Cc: xen-devel@lists.xenproject.org, Chen Huang , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, ocfs2-devel@oss.oracle.com Subject: [Ocfs2-devel] [PATCH -next 2/3] xen: balloon: Replaced simple_strtoull() with kstrtoull() X-BeenThere: ocfs2-devel@oss.oracle.com X-Mailman-Version: 2.1.9 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: ocfs2-devel-bounces@oss.oracle.com Errors-To: ocfs2-devel-bounces@oss.oracle.com X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9996 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 phishscore=0 bulkscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 suspectscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105260097 X-Proofpoint-GUID: iPYXQvAmxHs-qw0EQTsocQ-AYCOSKnIK X-Proofpoint-ORIG-GUID: iPYXQvAmxHs-qw0EQTsocQ-AYCOSKnIK X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9996 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 impostorscore=0 mlxscore=0 suspectscore=0 bulkscore=0 adultscore=0 mlxlogscore=999 phishscore=0 malwarescore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2105260098 The simple_strtoull() function is deprecated in some situation, since it does not check for the range overflow, use kstrtoull() instead. Signed-off-by: Chen Huang --- drivers/xen/xen-balloon.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/xen/xen-balloon.c b/drivers/xen/xen-balloon.c index a8d24433c8e9..1fba838963d2 100644 --- a/drivers/xen/xen-balloon.c +++ b/drivers/xen/xen-balloon.c @@ -163,13 +163,16 @@ static ssize_t store_target_kb(struct device *dev, const char *buf, size_t count) { - char *endchar; + ssize_t ret; unsigned long long target_bytes; if (!capable(CAP_SYS_ADMIN)) return -EPERM; - target_bytes = simple_strtoull(buf, &endchar, 0) * 1024; + ret = kstrtoull(buf, 0, &target_bytes); + if (ret) + return ret; + target_bytes *= 1024; balloon_set_new_target(target_bytes >> PAGE_SHIFT);