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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82F75C00140 for ; Wed, 10 Aug 2022 15:15:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231980AbiHJPOn (ORCPT ); Wed, 10 Aug 2022 11:14:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57108 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233069AbiHJPOj (ORCPT ); Wed, 10 Aug 2022 11:14:39 -0400 Received: from mx0a-00082601.pphosted.com (mx0b-00082601.pphosted.com [67.231.153.30]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEBD378235 for ; Wed, 10 Aug 2022 08:14:37 -0700 (PDT) Received: from pps.filterd (m0001303.ppops.net [127.0.0.1]) by m0001303.ppops.net (8.17.1.5/8.17.1.5) with ESMTP id 27ADBLjQ010219; Wed, 10 Aug 2022 08:13:58 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=message-id : date : subject : to : cc : references : from : in-reply-to : content-type : content-transfer-encoding : mime-version; s=facebook; bh=o+KfwbQWCJAGqtys3S2K8eSDAedLVvKrrRjQrz0JZFc=; b=YXL8nkjruNqLuhIJ+38IDjen1oGha9lqAqA/wmQti1xsgodMdc/0xzaP0aolHWTkb9Px XF3e3a1IIuhFtMjSLiNeR6ZC2VFD4NFGODIEGjCDG2FkwnamtsICmE0GybRB0fPN5mfb hXpPIhsd0gZ6RSq8Igjy5FsF+B8f+x/TVYQ= Received: from nam04-dm6-obe.outbound.protection.outlook.com (mail-dm6nam04lp2047.outbound.protection.outlook.com [104.47.73.47]) by m0001303.ppops.net (PPS) with ESMTPS id 3hvdb6gxrv-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 10 Aug 2022 08:13:58 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Tlbmyl8NVWbUEMdHxYBk8XjMCngqSFx58KUpr/RNuOHUjqbbPo9IVeKM/DO/2tJ8Pell4b+Lc507NiTcj9BKfyZQ+8WSRqXR2sWiHObyzq74kE+S1BXbaaIwaDN/zgPcSQSK8yLJjawRFHUcjrUa4H5ov9kaP31igvEmDnRrZh331hKE2KLtuYpUX1nUyh1F6bBW2mRrpvFO16kSK55Qwj7h2egEIp/LioQfa7WpO+ojt0O7bWJQKIzvopJUznz7nV3eXMCLWFODHxViZrobPd3V4DmN2TlkvMPaBZXb8lGV+/qgpN3eswhtS+O50jy13xEiUra26+RW5bdK13/o5A== 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=o+KfwbQWCJAGqtys3S2K8eSDAedLVvKrrRjQrz0JZFc=; b=Sp1gzgl5SEY8AoJ3Wq++XaqAnWjcGeQHaoHTACY8kC634Hg7pa1u4RM2ptE+pRK0a4JDbrYcm54XL3BZaX2chxumnXwqQFZLt4V84AAhV/nuGeDsrG3+5XMVwDI3+e/p67p/570jfYLLas7vTwNgZqKBYf+FrTJM4gk5SEEmhU/DEY0HYZWDSQIlrTS+7M4m2lvMj5YFp01txY19DouiRMULAXEd4Ta1uyDHpstIBrrP3ykW7+G32VFzXjfe7qcTcIx+LivN3QE3kvlAupH27nH5atDm25U8EGvhIdgw+5PAFP2tgH2qducsKzm7xyuIDpf+Dz/8fYp2A3+/R8IeAg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=fb.com; dmarc=pass action=none header.from=fb.com; dkim=pass header.d=fb.com; arc=none Received: from SN6PR1501MB2064.namprd15.prod.outlook.com (2603:10b6:805:d::27) by DM6PR15MB2363.namprd15.prod.outlook.com (2603:10b6:5:8a::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5525.11; Wed, 10 Aug 2022 15:13:45 +0000 Received: from SN6PR1501MB2064.namprd15.prod.outlook.com ([fe80::dde5:25a3:a125:7bc7]) by SN6PR1501MB2064.namprd15.prod.outlook.com ([fe80::dde5:25a3:a125:7bc7%2]) with mapi id 15.20.5525.010; Wed, 10 Aug 2022 15:13:44 +0000 Message-ID: Date: Wed, 10 Aug 2022 08:13:42 -0700 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Subject: Re: [PATCH bpf v2 7/9] selftests/bpf: Add tests for reading a dangling map iter fd Content-Language: en-US To: Hou Tao , bpf@vger.kernel.org Cc: Andrii Nakryiko , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Song Liu , KP Singh , "David S . Miller" , Jakub Kicinski , Stanislav Fomichev , Hao Luo , Jiri Olsa , John Fastabend , Lorenz Bauer , houtao1@huawei.com References: <20220810080538.1845898-1-houtao@huaweicloud.com> <20220810080538.1845898-8-houtao@huaweicloud.com> From: Yonghong Song In-Reply-To: <20220810080538.1845898-8-houtao@huaweicloud.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BY5PR13CA0017.namprd13.prod.outlook.com (2603:10b6:a03:180::30) To SN6PR1501MB2064.namprd15.prod.outlook.com (2603:10b6:805:d::27) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 658b7c00-aecd-47e9-a038-08da7ae2eabf X-MS-TrafficTypeDiagnostic: DM6PR15MB2363:EE_ X-FB-Source: Internal 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:SN6PR1501MB2064.namprd15.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230016)(4636009)(136003)(396003)(376002)(366004)(39860400002)(346002)(558084003)(2906002)(2616005)(7416002)(31686004)(36756003)(8676002)(4326008)(66556008)(66476007)(66946007)(8936002)(5660300002)(54906003)(6486002)(31696002)(41300700001)(6506007)(186003)(316002)(53546011)(6512007)(38100700002)(478600001)(86362001)(43740500002)(45980500001);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?b0M3WVVaaGdyNUM4dUZ6VFdBVmtCdHhYSWxCVUU0UFpjS25RbUI0MjZlaFRy?= =?utf-8?B?MEpRbkhURXk3RjdJZWxwWDlDUTIvWTF3QWlNUFNYMW1iRjJQcmM5OHRaTi9Q?= =?utf-8?B?ZFB2bllUOEQ1azRnUmtBZkt3ZEkzWVFyOWhUMkVFZGdXUmQrcjB2OGQxeXd3?= =?utf-8?B?bjlRWWhmSDRwS0FzV1ZEMnkzVTF0SVFYdGd3VzFQaU1VZmd4NWVQeG5YQXRG?= =?utf-8?B?NUhFR2lrSFRBMnRmQUQ2SFJKZndQWnBRT3M5TGZiSVBYMzRHdGFhcFZEcG5T?= =?utf-8?B?RStsZ3F3VENsc1FIaGVqZFZSNTIwMzlWR3NnTHY5MHNEYnRMbURIRlV1djBV?= =?utf-8?B?anhGdDgzdkRUMWN4QVpYSEJFYnV2MTJCYk5UbWI4d3NlaUl5NUFYVVFuVGo3?= =?utf-8?B?VlJJalArSnVzR2U3WnlXRlhOMDhOaHZzNnNBNmNLcnZRb29yclJNS1NhME9p?= =?utf-8?B?eXcxekVqTkVPczhkRTNoWVVITitHLzFDbkhDZk90Q0IyYXlFU3JETWo0L1R3?= =?utf-8?B?blhtcUEzeG02dlRtNnAvaDFuTDBmRGVUK1JPVDlUNFJSNzJ2dlRIV3JJRXN6?= =?utf-8?B?ZHJnRHRUM2xLaExxSjJxTW96ekg0bGpnT1U5elRpZC8xNXNhWWZNbkU2T0Z1?= =?utf-8?B?Q1Q1S0J0aWhBSU43MGVTRWpqSW1Lam5kakpjb1VDbFBpckZjNmlLY09JQjNK?= =?utf-8?B?bXV3TGlVaEgzVGRzN25QSTFWTGVDQlhaWmtMY2dqVnF5MUJEVnY0S3cyVzc1?= =?utf-8?B?YVliTlROb0haR28wUXRFOEVjTkErS1dsSTY0SGJsMEJHTGlGRG9TaXdVMzNl?= =?utf-8?B?TjlxSnpoazNnSUxoZVNuTDl5aXRzSVl3T2Z2RTBUempEVlRLbzhFYXhNWnFT?= =?utf-8?B?RnZyakRSVVh3VVBPYjFWejkvbEVEYjlCbG14WWlWODY5RjJzVGtkTEFxcUxI?= =?utf-8?B?T2s2Wk5GZ2J3a0NyWUVWQk1CYTA1VkRqVGFEY3JSQUM1elBwMGlQeUdXY0hs?= =?utf-8?B?MkZZb3BaYnQxQTk3WmtwYzhpZkthenBwVnZJWTJVU2ExTnRwS3FXRTAyOThH?= =?utf-8?B?anFxUTMwc0hyenZraTVPWDNPQU42eDU4MW40VFo0aXY1c25sN0RMSlZXZmRa?= =?utf-8?B?Y1FQUmZOM1BwSXdiODdIbldZbmdmNklENVdGWmVOSEFaZkxUM0NIUmVaem11?= =?utf-8?B?bWdmajErLzdKT3k1MEswaXNDVk1PTjA1am9sKytaaDByRFIvME1LaCtzWlEy?= =?utf-8?B?VHdWQ0RObFZHY3BaTjI3VGFPMXVRL3YzdXBBR1JLcmdsdEhQWWFSQmFvbmV5?= =?utf-8?B?K09TSHI4WUhIdjhBREVFNkszWVpLbC9WNFlaS3J1RjJaTGFVM29lWFR4cjZo?= =?utf-8?B?MDhYUCtJWUJzejZmb2ZJSklFRTNGSFZnWXN2QkQ1SHExVWdMS2lyYjhZYW1P?= =?utf-8?B?OEZHVjZLSUozOGF4eUl6ZWpZL2Y1V1BaeHlvNlRiY3Jla2RCVENDT2QyeG8w?= =?utf-8?B?d3M2RTJtUVNyUjU2M3ZvWDhmZ3ZoV1JkaUJ6Y0gyRXVYSjRBc3hZdGNmVXJ1?= =?utf-8?B?dHdHV29ELzd6emxRMFRXVmFzUmF5bDlkeHI3dytQMVpiOWltTU5IeXlQeFFY?= =?utf-8?B?b0dpMmY5YVVZSG1QSFM5bDZ6T09SdmttcVRQRi8ranpKY0NJQkNZQWF4eVh4?= =?utf-8?B?Y0RDYmtuMVE2Y1kwTXZPZExRSHZoY1ZuL3lYMW0yVTJHNnphRmY2SEdBMjRp?= =?utf-8?B?U0pvYjdhSEgya29iQlYyUXN0RityM2MrcUpkSGxuZDV5NlVKK0p2dHozNWtx?= =?utf-8?B?MVQ2OFo3L2J5YXJDTDlOTDNQbEdDNDJZMVNseEo3RUlHcGIvUEE4akhMQkZu?= =?utf-8?B?WkJLMW9nUGJ2WTYyczdOQXFOejJlTGNkL252Qmhhb24wU3J3NVo4K3cydEU5?= =?utf-8?B?bVRJbEJpVU9ZYTBDQWE3QWw0MXNrYTBOMjRaVGlvNytER0pDVHlYUEt2ZE5l?= =?utf-8?B?MnczOFNMTFBZUEdkVXdEK0l0YnNlMFdEY29VYkNSY0VGSVpxZkU4bDdrY0xa?= =?utf-8?B?UDJpZHdHT1ZKY05SMS84YzNPLzM0UWRzZ0NUUDdPVjBMcFBydEJzR2M5WWcz?= =?utf-8?B?TzhHRU9SQmpzQnlsYlJpNXhVQzFJVWQzVmlPWm1Cb0FqL20wb3ZyOUpsSk95?= =?utf-8?B?Y3c9PQ==?= X-OriginatorOrg: fb.com X-MS-Exchange-CrossTenant-Network-Message-Id: 658b7c00-aecd-47e9-a038-08da7ae2eabf X-MS-Exchange-CrossTenant-AuthSource: SN6PR1501MB2064.namprd15.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Aug 2022 15:13:44.7377 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 8ae927fe-1255-47a7-a2af-5f3a069daaa2 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: XbWorqSuXi4xyAqmGI5cZ83dCjzxCrQawOAGKBVo4oonNgu4wQIjVUw3vXJloCRU X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR15MB2363 X-Proofpoint-ORIG-GUID: TpXBUoz-xRWKvB6vADEWAN960lDCyYOK X-Proofpoint-GUID: TpXBUoz-xRWKvB6vADEWAN960lDCyYOK X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-10_08,2022-08-10_01,2022-06-22_01 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On 8/10/22 1:05 AM, Hou Tao wrote: > From: Hou Tao > > After closing both related link fd and map fd, reading the map > iterator fd to ensure it is OK to do so. > > Signed-off-by: Hou Tao Acked-by: Yonghong Song