From patchwork Thu Apr 20 21:53:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Junxiao Bi X-Patchwork-Id: 86054 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp653701vqo; Thu, 20 Apr 2023 15:21:22 -0700 (PDT) X-Google-Smtp-Source: AKy350awz9dR1kY1yAQgUjTJjLU3j5z5AGxhj2ze6JZjmbGNKik+GDpRm6WZY8mM76aMbVFOXUCH X-Received: by 2002:a17:902:d48c:b0:1a3:c8c2:c322 with SMTP id c12-20020a170902d48c00b001a3c8c2c322mr3827108plg.29.1682029282122; Thu, 20 Apr 2023 15:21:22 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1682029282; cv=pass; d=google.com; s=arc-20160816; b=IA29nGzMx6qcK2+FuR53FpDWgUIk7ZuQ/Zrd5xiqE2xp5UUU0MVe4qUKRv/GJSwHUK npFCanPIw8qU2YczePsryDFnXx2z/BLRiIAISWvQK94u9mfR28ysV5zlOMqtwOFGTNjF BzKValliEH4A0ZMWKNE7sTu3oAmoekXUa+0DlyaEtu93aLeUUgYVNlJ3MiIVDtzcTHBy 1DEzHvb909kSJPEPaG6pz320OmxO/cPpeWqyImheMOm6WXFsVIrm88X0BjIBRtaTEvkw Kvx8Vq93HuxWX966I4jPkiTafKkeEgT0osCxvMYfWuXW2278tMw/3+CsQQ9mSqGWnsxb amtw== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:content-transfer-encoding :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature:dkim-signature; bh=wX9gDl7MwAkkjyL5VOUvTctIf8owQ51L8PKd1cTmMaA=; b=PItx95RFHil+77rhXt6Zt5Cf5hnUPlY7ByM2O3xEV4dm1JYlQk82stuRcXdzmCyXnb HjmOoMN8ufMk5+crE5q/AcKjamSWKU2tZnONJsEnh/WWKnOyybJZdDDTnjIyvCTSUeJ3 gGu5TKiNRpkrsqwkDvyFaWB0pHE/xqIHt3W0tt5ELAX3Li+bBgHS2X6LjAx08dmNLqT7 qf+bv2pSUnZvRd0KQgvKdv4SuMHvlCK99YbVyhXR/T9wiCZsU9nqRdZc7zarHZ1cdBAK m3nOoZYSbDOJxumt6hnAF3GdljIqSiPSFJivNDqnvFp8w70AlIGXonv7MimTE2RRC8Dx aK1Q== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2023-03-30 header.b=l2nyumOk; dkim=pass header.i=@oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=xJlAqp9x; arc=pass (i=1 spf=pass spfdomain=oracle.com dkim=pass dkdomain=oracle.com dmarc=pass fromdomain=oracle.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id la5-20020a170902fa0500b001a93e74c8b8si977553plb.481.2023.04.20.15.21.07; Thu, 20 Apr 2023 15:21:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2023-03-30 header.b=l2nyumOk; dkim=pass header.i=@oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=xJlAqp9x; arc=pass (i=1 spf=pass spfdomain=oracle.com dkim=pass dkdomain=oracle.com dmarc=pass fromdomain=oracle.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232289AbjDTVx7 (ORCPT + 99 others); Thu, 20 Apr 2023 17:53:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60148 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231728AbjDTVx5 (ORCPT ); Thu, 20 Apr 2023 17:53:57 -0400 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AA901730; Thu, 20 Apr 2023 14:53:56 -0700 (PDT) Received: from pps.filterd (m0246632.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33KK1lhd002114; Thu, 20 Apr 2023 21:53:50 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-transfer-encoding : content-type : mime-version; s=corp-2023-03-30; bh=wX9gDl7MwAkkjyL5VOUvTctIf8owQ51L8PKd1cTmMaA=; b=l2nyumOkMnvAgH14dmDkBgdwYq/UpsszYGZV8qle9LjwTsvyaogxDsNU3vkjSYTAypZl uPy2iH/crATRzuWVRBN9yK/RG42B1yb4TIkzIkTNnhzxM/Or+PUpjJ2XoqRa7QJGMfV3 u10VGVDdGK6Xucn89GElK8mf4feiIuafEFMkZktcGGKhm/o3Vy06F2uEJDoumhNpO4Cx LEl2vqUye4pfLzdTjhJtcXDBDY9arwNT7AvWk43iGE+G/NcYMhrupS5II6Gnbi8TNa3l uIktl6xaOp0E/jsqRO3a0qMTqbkEf79ZQSaCGS522gF9LtvNzky7ENdhubdmAjuuTdIU Rg== Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 3pykhu40wx-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Apr 2023 21:53:50 +0000 Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.17.1.19/8.17.1.19) with ESMTP id 33KK666E037795; Thu, 20 Apr 2023 21:53:49 GMT Received: from nam11-bn8-obe.outbound.protection.outlook.com (mail-bn8nam11lp2168.outbound.protection.outlook.com [104.47.58.168]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 3pyjc8ug3u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 20 Apr 2023 21:53:49 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=S/xqLcQpfWFY054qOEX87zzOABp2ZyD1YHvoPCvL9ZlXyFqf9zEyWBuhMESrJpRt2nFL2qAqctay3aNKTTbQeJ+HoWLr4cpXr+HxgMc/j6RR8u+7L84J0P9Nl+TkcpV0KBzRlzZVWp23dZVVHltOhwgKJHUGNoQEz2uWpUOz/2XsbNIZy5lpyl9vFm/JvpF2jzf07fzTh/tGNUiUSXZR5tA9MoXSRIV1i31IRgNpbR78qTiKt9UDsmIYc1qfWmbjhWEpLQ41cwk6Tg7Nw/bxWphlXtkr2LnFtXcOxuXlrjUnTllAsDCnTNVhttuILUqFiXMINg0wHIS+UU4OwWyuaA== 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=wX9gDl7MwAkkjyL5VOUvTctIf8owQ51L8PKd1cTmMaA=; b=N7VQcNDFH+uVrYYBdzOfNaGHbO0/AM/rDyAL9gmOPG2uMpbycb+v80OGvA9adAOfm5i+neK+CVj0TKJPT+ksZUyn4kuqQQT0OfAmzuemyAW7vi8PBPegCSRn8RJYWYqX8CJrH7qhaOZyLycF7/Y7qdCPhC2mee60fAjFnRJ1YfDMRgNpMvnUkcpv8/edDuGvvZjCgW9wo+Xm9iupnSVxLDxRFdZwj5mSwFH63D3LQMOhtcPOQ+HgMBjvd6St/n6ZMHo/CSt3pBmDFFUPQJ1dsebIJ31ulmd/X1bBYD1GTA5N+w68f7qi+s+S2Z+ejHPKv/0VvWXJQZfZCI3BcQkOLg== 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=wX9gDl7MwAkkjyL5VOUvTctIf8owQ51L8PKd1cTmMaA=; b=xJlAqp9x7LeUvnP24iUPz/ITFukDbck/IXpKknDCKHDe2SSzl05D+dUlmSHvOE1XJyPOufhgv2eZVn/MGrR0ko/FBt38E03OXU061GsYizWaldsA4udL4ixjemV2j0x8H2ySOc6gYi9i8MxNIS5vcQ9yg9SetZzwv1Nrw9oxFbo= Received: from SJ0PR10MB4752.namprd10.prod.outlook.com (2603:10b6:a03:2d7::19) by PH7PR10MB7036.namprd10.prod.outlook.com (2603:10b6:510:274::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6298.45; Thu, 20 Apr 2023 21:53:47 +0000 Received: from SJ0PR10MB4752.namprd10.prod.outlook.com ([fe80::4a9d:b42c:57c7:b53c]) by SJ0PR10MB4752.namprd10.prod.outlook.com ([fe80::4a9d:b42c:57c7:b53c%5]) with mapi id 15.20.6319.022; Thu, 20 Apr 2023 21:53:47 +0000 From: Junxiao Bi To: linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-block@vger.kernel.org Cc: paul@paul-moore.com, nathanl@linux.ibm.com, axboe@kernel.dk, jmorris@namei.org, serge@hallyn.com, konrad.wilk@oracle.com, joe.jin@oracle.com, junxiao.bi@oracle.com Subject: [PATCH V4 2/2] blktrace: allow access trace file in lockdown mode Date: Thu, 20 Apr 2023 14:53:31 -0700 Message-Id: <20230420215331.88326-2-junxiao.bi@oracle.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <20230420215331.88326-1-junxiao.bi@oracle.com> References: <20230420215331.88326-1-junxiao.bi@oracle.com> X-ClientProxiedBy: LO2P123CA0046.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600::34) To SJ0PR10MB4752.namprd10.prod.outlook.com (2603:10b6:a03:2d7::19) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ0PR10MB4752:EE_|PH7PR10MB7036:EE_ X-MS-Office365-Filtering-Correlation-Id: 8475b27d-7caa-44cd-898b-08db41e9b7b1 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:SJ0PR10MB4752.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230028)(366004)(39860400002)(376002)(396003)(346002)(136003)(451199021)(5660300002)(44832011)(2616005)(41300700001)(83380400001)(86362001)(107886003)(1076003)(6512007)(6506007)(186003)(38100700002)(8936002)(8676002)(478600001)(6666004)(6486002)(316002)(36756003)(66946007)(66556008)(66476007)(4326008)(2906002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-ExternalHop-MessageData-0: 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 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-Network-Message-Id: 8475b27d-7caa-44cd-898b-08db41e9b7b1 X-MS-Exchange-CrossTenant-AuthSource: SJ0PR10MB4752.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Apr 2023 21:53:47.3150 (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: ES19ecZs3TZgThBm68jH9aTMota3q3yEpiqmNVpgTUb5FrsDbGKgWVNd+RIc8vRpiuGYDpZUc20OhyLhoqTHug== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR10MB7036 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-20_15,2023-04-20_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 adultscore=0 spamscore=0 malwarescore=0 suspectscore=0 mlxscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304200185 X-Proofpoint-GUID: _nEKtGSYN58_925wjIfNpUeL4LuoX7mu X-Proofpoint-ORIG-GUID: _nEKtGSYN58_925wjIfNpUeL4LuoX7mu X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763735536316892724?= X-GMAIL-MSGID: =?utf-8?q?1763735536316892724?= blktrace trace files are per-cpu relay files that are used by kernel to export IO metadata(IO events, type, target disk, offset and len etc.) to userspace, no data from IO itself will be exported. Bypass lockdown for these files will make blktrace work in lockdown mode. Signed-off-by: Junxiao Bi --- kernel/trace/blktrace.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index d5d94510afd3..e1a9f8b7d710 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -490,10 +490,16 @@ static struct dentry *blk_create_buf_file_callback(const char *filename, &relay_file_operations); } +static bool blk_bypass_lockdown(struct inode *inode) +{ + return true; +} + static const struct rchan_callbacks blk_relay_callbacks = { .subbuf_start = blk_subbuf_start_callback, .create_buf_file = blk_create_buf_file_callback, .remove_buf_file = blk_remove_buf_file_callback, + .bypass_lockdown = blk_bypass_lockdown, }; static void blk_trace_setup_lba(struct blk_trace *bt,