From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-00069f02.pphosted.com (mx0a-00069f02.pphosted.com [205.220.165.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 611602C181 for ; Tue, 4 Nov 2025 20:45:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=205.220.165.32 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762289156; cv=fail; b=ihzm4/dlp41YgtyOQ0pSkBPKIbWbul41Xa8XNBY+3CZvFLCVjmF9Ak9eRcJwXRunRTWW440AgJAFz6WYQBaxHSOo0Xi2u0FdZFd0w05w5X3AqMGTiSnHZSZd7UDKxvG/r02kg+cdoZ/1vrYNhKPQdfhZE1gVNFRGwwlS8IyHnog= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762289156; c=relaxed/simple; bh=4GLSi3Cm9T84aOr7AgttAO2u1Ss/ES86iF/u16hIqDg=; h=Message-ID:Date:Subject:To:Cc:References:From:In-Reply-To: Content-Type:MIME-Version; b=Xi/Pet8m5jUpiqyuc6FZdhFXK0FYs1A03yhnWtefny2KBD2k3tjodhKNNHv/X4qeKPC3LRg6KL8eRgU+7q8/qGoDZkiEJwa+5mmuoxtHKqCehqMCZasIdbkThomqqiJrO5D6khgXcgjg2N8xw1G5dSvZzfgfnGMvNDgWXjpXeUw= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=akeUj/Ij; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b=VMRa2LHX; arc=fail smtp.client-ip=205.220.165.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="akeUj/Ij"; dkim=pass (1024-bit key) header.d=oracle.onmicrosoft.com header.i=@oracle.onmicrosoft.com header.b="VMRa2LHX" Received: from pps.filterd (m0333521.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 5A4Kj2m9002790; Tue, 4 Nov 2025 20:45:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= corp-2025-04-25; bh=l4IbdI7eIMqbAR1GODJ4Z5OejCr4TYAtZOAik1uO3zc=; b= akeUj/IjziZME8P6toYGL9xyJbQwlHq3IMXDdbs88GS2EKbMsD5VTWemmZMAuV9A zxRjTBOGFf0e1hyOZWrk9CVnrwfAt5ZzpASTdZi0Kf4pIgpT3swPGnyACqAAqEs7 sJw93gNew+rpgIfZZqEusWTqWpMpz4bktMLFcqgdWLgcnvQT5fiYeqE2Gut7e3KK dbBdlaSNpcTBH8ChFJdMFvpPuOwgWPEFlUIoSIFMQES1+QZjVqUZcY7TtoFsjqXs YPzVS8Clq/imWggi5cZAQSkzPwm8WktQFPK20uKAagixQiYr1HtxuPzrIiOZ2oeF 9iTPcZtvcnnMz+mP85Ukkw== Received: from phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta03.appoci.oracle.com [138.1.37.129]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 4a7rspr00t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 04 Nov 2025 20:45:49 +0000 (GMT) Received: from pps.filterd (phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 5A4Ka7md024770; Tue, 4 Nov 2025 20:45:48 GMT Received: from ph7pr06cu001.outbound.protection.outlook.com (mail-westus3azon11010003.outbound.protection.outlook.com [52.101.201.3]) by phxpaimrmta03.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 4a58n9vjer-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 04 Nov 2025 20:45:48 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=uHiqfrVYjlOWE6b0fHky1rGw1OOS2QQcdGiEijoNlhyMKXDlDAwG7UttUVcAT5GM8x1gbKkU0waIU9urb3Gn2gAVPRr6L/rg4mtycpktfl+apfCAjAzAMEa3p8j3swgu+a5XMyzMD6bON+taXOHN/vNK0P3c6Oyt790CCcv4Swsl1WkTcmE6HxmRhwHFzEEO7a8Tcio+Xh/BR4QbDCqpAle1OVJJYKZ4omNcNFJf9S4cU9OSXButgqpO94NVfgoxVPfIZ+MvFzvAFHcPzrXojj1NVxvEis2o1len3gYb1GDhabS96W51In/rFJZn553tvi0s+wWWmRFMGs4RGWVBUw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=l4IbdI7eIMqbAR1GODJ4Z5OejCr4TYAtZOAik1uO3zc=; b=NroyEhWyRoSxAyFCl28USjl8VEaI3hRQwXo4OFeXFKhjlGgKyFdKnwO4PpQknDMv7cADPlTaep3wNhm/+LGVbnSuqurH+XKl9cqIxD0M3R9M2OYUUwOS/MblsavGIoim/UuEzPrYAZ1oJiAuCxClekiWn2fhmdqv7uyD+d721ivMy1BXMUkzA86GVVShojDL1Tf+mPzo5cEh8nY37t46tqlgT0IrQcPVpcR8nFUkG+BJDz2bSocmIlc7OGdUr+11/lkXOuRNaHB7/dEEPoqjy+6zYV8ztDgs3NG/la606BvwnjOsborgI+gzyks7EtC53Tk43i8kynP2KE0K8DJmeg== 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=l4IbdI7eIMqbAR1GODJ4Z5OejCr4TYAtZOAik1uO3zc=; b=VMRa2LHXtrtduEimgEjQW02i83zKjlcKpIXzznAmB9eaBeFbOTJq+8HTICyhcFZucNp4+sJpXr9qmoMEefI7TCujDarX8olOp0QAo2hFr4eryGzeuYRgB7U/XixvF+Eon1UGfKqfGsix+L1cUUCnqMVHtOP+6s8+eAeGpto49k8= Received: from BY5PR10MB4290.namprd10.prod.outlook.com (2603:10b6:a03:203::15) by MW4PR10MB5750.namprd10.prod.outlook.com (2603:10b6:303:18e::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9298.7; Tue, 4 Nov 2025 20:45:46 +0000 Received: from BY5PR10MB4290.namprd10.prod.outlook.com ([fe80::c86a:40f1:7833:ef3c]) by BY5PR10MB4290.namprd10.prod.outlook.com ([fe80::c86a:40f1:7833:ef3c%3]) with mapi id 15.20.9275.015; Tue, 4 Nov 2025 20:45:46 +0000 Message-ID: Date: Tue, 4 Nov 2025 15:45:34 -0500 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 4/4] NFSv4.1: protect destroying and nullifying bc_serv structure To: Olga Kornievskaia , trondmy@kernel.org, anna@kernel.org Cc: linux-nfs@vger.kernel.org References: <20251103221339.45145-1-okorniev@redhat.com> <20251103221339.45145-5-okorniev@redhat.com> Content-Language: en-US From: Anna Schumaker Organization: Oracle Corporation In-Reply-To: <20251103221339.45145-5-okorniev@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ClientProxiedBy: CH0PR03CA0079.namprd03.prod.outlook.com (2603:10b6:610:cc::24) To BY5PR10MB4290.namprd10.prod.outlook.com (2603:10b6:a03:203::15) Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BY5PR10MB4290:EE_|MW4PR10MB5750:EE_ X-MS-Office365-Filtering-Correlation-Id: b8d39211-1d3a-448a-2923-08de1be3214f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|366016|1800799024|7053199007; X-Microsoft-Antispam-Message-Info: =?utf-8?B?eG9uZnBpckhzbHdLYkJqdXJVUE15aUR4YVNxZlliblFzMGh6cTUyZmpnc2FL?= =?utf-8?B?VnNHZGsrVkJsWTJLUjc1VVVtcmpLekViQlkycVZweUt3NG1NNGwrR0VtUGtD?= =?utf-8?B?Tzc1UG1DRWRra280ekZTWjRobUVlbmtCbE9lYXdLZmR0dDNldS9DQjZRUjVj?= =?utf-8?B?RUQ2dnBHSmt6MWlub1plV0JhS1l1WWhEOUFzRUlwcWozYkNpQTJENm1kSkgw?= =?utf-8?B?czhOL0Z5UkdFWjgvMXZmdmY5Q2pGa2psY2ZmVklFTU5sZTJ6cEV4NDNxT1BC?= =?utf-8?B?R2hQVlF0U2xxRDFLTVRZWUNYaURxVW5HcDFhVmZFNmp0c3hWSE5iWmxKK2Jt?= =?utf-8?B?cTlzTXA4aDVMcmd0ZURnR01UaU5LWEFLNE9INzZDeEV5bW1oTU8xTEhMbmVC?= =?utf-8?B?NnVjZmkwM0Q2MUdoRHhwQzZMbzhZeVI1M3YxdUhXK3BxOXZMU1p0ZXVnYTJ5?= =?utf-8?B?RUNzbXNzeWRJdWREVUd4OGpHY0l0bWE5V1VQYkxGY1hCNVAxWW5jSG9LNFEz?= =?utf-8?B?bHMwNXpmYUpMOWs4WExWUkx3Lzg5bkxrT05zWjJFcThUaHJqZDlHYWtPREZJ?= =?utf-8?B?eHpzV2swY3owK1RUUEV4NFIyS0dtVGcreXpLL1RpY3Y3TWlVN2xaVlZ4NmpS?= =?utf-8?B?c3JrbzFSTURxK1FMY1ZhVlJNT24xNzRIdE9zcG9Rb3lESHJwYmhvSkk5S2xJ?= =?utf-8?B?dW1rdjZXSEp5SHNVNFQ2ZndrVGJxMlVLUDVPcEVtdEZMS2VYck9ScEVsUUxD?= =?utf-8?B?RnFYMGZ6SHh4WWNaV0RseEFROTZ5ZXJ1MGFxZzMrdXp4ZTBXRUJJM0dwQmh0?= =?utf-8?B?bzBjeERMK09DWm5JMjcvcFJhVU5yeHcwVk5UQmMvczRPYnArSTA4WlBXM3Vq?= =?utf-8?B?OG1BMURSRUlHeHFrS1U4bE5NOHRVVW1iN2V0UDVhOWUrU3dBdDJ5L3JPbnNq?= =?utf-8?B?OEswdllubFNGR3dzbnFhWjZXTlBKUzNTaFJzSlRUOVBHQ0VYRklzaHIya3N4?= =?utf-8?B?QWF0bDY5SzZENDZQd1dVdHE2NkkwZy9yQndUS2dNbWR0ekwxMkZyRklWajky?= =?utf-8?B?dHJjL2lHaVpGL0lYUDNPdXBOc3BWUFFxNmNVb0lSQjdxUjZseHJEUlhObHZ3?= =?utf-8?B?QXJ4YTRDZ0lYd2NFN3NubTRQTzVuelhTKzFrYTRyV2R3UytTeWx2N0g4NGh1?= =?utf-8?B?UmRlT2R0Y1Z6UmV4RHJTbm9KUWV2ZnJUNVN0cEF3ZzFwOTZFaGViUlA5Tnh4?= =?utf-8?B?VGZnZitSTU00SCtLNThFVkNUTmMvcEt2dnNaSGZ4SHpzNm5HY1U2d0REYko5?= =?utf-8?B?MCtONXJkMTBkb2NCYWVsWUsyeDVlRUtKbXVodDRqV1JuM3hzRmJjVUxHZ2My?= =?utf-8?B?U1RjTlEydGRHLys4OTBjSzJMZnF3VmZvczk1Tk9zbWpwRFBjOVIxVUh4cUNH?= =?utf-8?B?ejhSWndVMnRxT3NOY1hBWUo2WGUzM1NlZXpoRVo0K052dkVxOVoxcHpFdy80?= =?utf-8?B?MGpRb091ZVk5cndKaXB0K0ZldHM3aThDekRUNmZHNFpIWXRTOGU2RGZOQUNE?= =?utf-8?B?OG5iUlpMMmlDMmdyRUdnb3h4bEhPTnBrYXlTeHk2RFBVeGlKQ2tpMGxocTVX?= =?utf-8?B?UURCSjJRQW05MysreTIvc0V5NWtEZFFha1h5blcxWjBkOXJKR2dubGJMY3dN?= =?utf-8?B?TGNyZkFMNm4zWCtyVVJ2ZFJIMnV3aDVHNk1jZnV6WEtRNUlFT3grUitxMlBU?= =?utf-8?B?T3JVNlFiTk5CWUFFMDBUQ3JGdm5GNGhyMXR3UWFybm9EKzVZMVJmYkRNZG9X?= =?utf-8?B?SWMyYzk1dEJJeEtnSGkzVllZNTJENk8vUXVEOHNUamVTK1NPL0JzaGFLS2FI?= =?utf-8?B?dVRBVERWVy92YnBGRHhNQUVhY3JlcXpVNlUwTEQwRnJYY2U3dGJPTXhsak1L?= =?utf-8?Q?P0TzDPrsITrVRTHHpmX3hrbEnp1qP9Zf?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:BY5PR10MB4290.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(376014)(366016)(1800799024)(7053199007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?utf-8?B?Snc4MEZHSytLTFlvSUZ2TVVrUE0rWWV6V3UrR1FVQ0gybHNQWXRyeVlZSkk3?= =?utf-8?B?SjE5MW53QklmeGt5VUY0RG80dXdrMGdwR2U3WXFMekxlQTVjc1hHVDBOekY5?= =?utf-8?B?ZW91YVppWGN1T1ZpVzJpb1QvQmprbjRyVk9SZ2dUTWJ4Ry9meUZTSjlVVFRz?= =?utf-8?B?ZjY0TC9zcHE4QmZrQ0UwamZZZlJzakI4bTNRVVFyeDRUOFQyc2J1SWRuU28w?= =?utf-8?B?endiQ3pCOEtwWWhKdDdYVzU0UjB5Q2drRDh2eExXZ2Ryc1JvZmFLaVdKdXMv?= =?utf-8?B?NVNrSFRBVll3c0lUMlBFZHFyaWp3NnRlRHRjWXdNYjRjSDYxWnExd3N4bXpw?= =?utf-8?B?WUZwUGZDQkNtY1ArS05kWW5TTHhHdEIrS3FYdEtJc0VFMTBGbVhTbjA3Wnk5?= =?utf-8?B?ZVE4Y2pSekFveUw0QTJSKzd6cWl6dmJzRHBNd0VFazBBV3pWMGRERFN6V0ow?= =?utf-8?B?SjRla0xmWkRsU0NLeFlPNzdIZnFCbVc5aWpvQ2NaeXIrbURKY1BDTkNzMXlv?= =?utf-8?B?NWMwQUJGTXRyTEJIY1g4eUZkcU9mTkZrc3JTZFd6a0Q1YTREdGoxNG9aVDBw?= =?utf-8?B?RlNsazRyblNSeDljOVpCajlxY3M1VmMwemJMajhkVXp4QUl6TmFQaWlKS0h1?= =?utf-8?B?RHVxRVNLQWtRczIwZ0xudDh6OFJ6L1dOYko3OEVSSGZkaEllaE9ySjUzSVN0?= =?utf-8?B?T1pzQjZVNk9mT050U2NkRXk4eERaQ3E3ZUhyS3FnQkJxcjB1c2N0bzhJTEc0?= =?utf-8?B?eDhJNzJTRVJEZy9WM2Z3Y0J4TXFkNzNqVXVKRU5hSW1KL0xidEd4Mm8vdDJG?= =?utf-8?B?a2tNRnY1UnpDcUdGbTIwWnV5NllYMHZJNEE5NEdlR0RNOTlTUUp2dlRNOTVT?= =?utf-8?B?OUhoY0VUdUsyTi9hNXRKK2lGdzZCRmVFNGlzOVFoSzUwV3YyTndxMzgwV29x?= =?utf-8?B?Sk13M3U4bzJ0enZrMGZEaE83L1hmOUVQWWRaL0lWd2tEZ0J2ZEoxYU4rZVNa?= =?utf-8?B?ZHhKVklaMWJaR040elBQU21hZms0cnBGclE1aGFBTnVCdEtUYm9iR0o0U3Nu?= =?utf-8?B?QkZvMXRlNlpta1dnUTY2UlJPWjV5NjVNTDg4MkNraGtFNk92MmhwSEZ3Z0FF?= =?utf-8?B?Q3hlYm9MV2xoQWhkOXpLZjNiUEo5L1gxMU9YYmhxdUVPc1M5T21zMWhUZU9w?= =?utf-8?B?RHgzNEQreU52cWZnRHZPY1ZzWStqc3lNNGVjQmRHYlZEcUJQYmFjMEZLS1dQ?= =?utf-8?B?ZEgwYU9WUGNVQzB6QnlkOC81RmtCWE05UWQ3ZjRuVnVnWGY1L3VGazJMM2M3?= =?utf-8?B?OVhPdWtLV1BqbHZiNmYrU0crWklWRVFVZGtkY25WMkRYQTJXVzVpa3BMd2do?= =?utf-8?B?TVVVaGpBYlU0dHBFMjNOTnZFRFYrS2hCTm45T2F1c1lqbXFVeG5uZHpPWVg1?= =?utf-8?B?RnRiQWNWbk1sV2NHRS9iQjJueWNFOFA5Z1dFNVB5M2JMQ3BoY1ZBYXd1dkhu?= =?utf-8?B?dTR0L3Vib1FLNlQ0ODZUTFFxYXdxQzJGTCtySnpaZnVvc0FRTGNIUE9nbDdH?= =?utf-8?B?bjdZQ1ZNaFN6eDZtSWxsK2VzeDVTM2hWellRRkVwKzNnVk9tUXhRaEljT3VC?= =?utf-8?B?RGNEelZQRWR0b1htYzRuSmhNQzhDZkhOYTVMMFBPZ1g5RXpPMjQ5aG1ld1Rw?= =?utf-8?B?SzdTNnJ6TWdkYVVrYWY2UVF3eG1Rb0tIbHoyNmJGMmhsQWhvcnFKWXdnOVcv?= =?utf-8?B?WUMrVGRkV1RjVHB0NzdBMmxVTkwxYTVqRjd2NG1BamJzaisvOWpIQ0dWRFY0?= =?utf-8?B?bjJjaWpVeUE2OVVHU0xzQjNscGo2MTFCLzBiMEl0bEtVWUVCa0MyUkx1d0Vs?= =?utf-8?B?RDAvTWZYQTVONzVDQU9pSDhmSThuU2lKT3BkTzZpNzdUdThxMllHYTJ4cGli?= =?utf-8?B?VGdUWjNJYTE4Y0ZtazhObFlDRGVYUkxzY1owVXRXQlNFa0NUekVOczQySWRW?= =?utf-8?B?Rm4yWStleHlkYUYvckx1RTJFaUI5NXk4NFdLaisrY0tubFhaeTF4djFlV1dy?= =?utf-8?B?ZkVlR21UT3hzMExZcU5EQnVzNm5CWHdDUWVpOTMvWmRYTTFIY2VBOCtGUTVK?= =?utf-8?B?ZGh1ZWtPL3BQTFUxZ1VwcmZJQUNkSWt1TTBUVyt6aUdoc21LWVEyY0NzWWpi?= =?utf-8?B?QlE9PQ==?= 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: b8d39211-1d3a-448a-2923-08de1be3214f X-MS-Exchange-CrossTenant-AuthSource: BY5PR10MB4290.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2025 20:45:46.6434 (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: naElyScp/GfWdT71HGIgutJHWoekpYQDYW5eNaDI2keFZlho7xTo7EDF3/FROvuFjsCyOtBAKpkwEWmoF/9se9YswhFmXRXVbsTVq1289Sw= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MW4PR10MB5750 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-04_03,2025-11-03_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 mlxlogscore=999 spamscore=0 adultscore=0 phishscore=0 malwarescore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2510240000 definitions=main-2511040174 X-Authority-Analysis: v=2.4 cv=OcOVzxTY c=1 sm=1 tr=0 ts=690a65fd b=1 cx=c_pps a=WeWmnZmh0fydH62SvGsd2A==:117 a=WeWmnZmh0fydH62SvGsd2A==:17 a=6eWqkTHjU83fiwn7nKZWdM+Sl24=:19 a=z/mQ4Ysz8XfWz/Q5cLBRGdckG28=:19 a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=20KFwNOVAAAA:8 a=7n4VvvSflUrm9bKhTukA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: lsc6NyCvnTgoPSuef0Ny89kdNz-Sgldu X-Proofpoint-ORIG-GUID: lsc6NyCvnTgoPSuef0Ny89kdNz-Sgldu X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA0MDE3NCBTYWx0ZWRfX0HuZPVRd36Ez jTfNTU3o6gQXRHeBnAUsy3F9rlsuG7HqQvD16wfLVuG82ola57BvhXN3JgXaVfiSZbRaGw2Ks/o qPymddSLEzNzuO7tU/bJyk0lobs12K3E3v9zbED+nFw/R0dIwao9S4x296mPa10sNG4aU95H4U7 0BYfi5Dj0MivkL+Tvkq1G/75tD+fV6hN/GHCt56S+UX95Xr9vOBEuB2B7Ooi4LAKsO8W3xI6rzX TOy+k/yfOIMrAUqnyHZCmseXV1P0e+FjsbJLgQATcMKBm1mn/KD9y3caJGZNNHu6LfRaAdqvUj+ unqrYL9aOs7VMfurvpxYwX5yl1sAdOqXGC61wH/OnZyO9PvZm7EEXtfZtebQ/TQluo+aASnX05C Wzm7TSDHuh1oV8oXCb72FVH0dhoHow== Hi Olga, On 11/3/25 5:13 PM, Olga Kornievskaia wrote: > When we are shutting down the client, we free the callback > server structure and then at a later pointer we free the > transport used by the client. Yet, it's possible that after > the callback server is freed, the transport receives a > backchannel request at which point we can dereferene freed > memory. Instead, do the freeing the bc server and nullying > bc_serv under the lock. > > Signed-off-by: Olga Kornievskaia > --- > fs/nfs/callback.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c > index 8b674ee093a6..58e865bba03f 100644 > --- a/fs/nfs/callback.c > +++ b/fs/nfs/callback.c > @@ -270,7 +270,10 @@ void nfs_callback_down(int minorversion, struct net *net, struct rpc_xprt *xprt) > if (cb_info->users == 0) { > svc_set_num_threads(serv, NULL, 0); > dprintk("nfs_callback_down: service destroyed\n"); > - svc_destroy(&cb_info->serv); > + if (!minorversion) > + svc_destroy(&cb_info->serv); > + else > + xprt_svc_destroy_nullify_bc(xprt, &cb_info->serv); Any reason we can't ditch the if/else and unconditionally call xprt_svc_destroy_nullify_bc() here? Thanks, Anna > } > mutex_unlock(&nfs_callback_mutex); > }