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Sat, 18 Dec 2021 21:25:19 +0000 From: Chuck Lever III To: linux-rdma Subject: f0ae4afe3d35 ("RDMA/mlx5: Fix releasing unallocated memory in dereg MR flow") Thread-Topic: f0ae4afe3d35 ("RDMA/mlx5: Fix releasing unallocated memory in dereg MR flow") Thread-Index: AQHX9FXB2QwwVKx930KXJNGtxnlVWQ== Date: Sat, 18 Dec 2021 21:25:18 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: Apple Mail (2.3654.120.0.1.13) x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: f7babfb1-08bf-4ff8-6b38-08d9c26ce42d x-ms-traffictypediagnostic: CH0PR10MB5498:EE_ x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:569; x-ms-exchange-senderadcheck: 1 x-ms-exchange-antispam-relay: 0 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: UAg5lnl5YG3ql1gXxrJC561/LbgSVQBjmfoDjCnAgif3Ub35xiastnN17/FkMvdHSDp4yrYUlTVjrkVbNBZSJeMXqVylWuFEQIHMHwyQbfKrW6QEGthTuWzZx/4JOcr8mNZPfu0BWt4J0xX4rszoUdMQ2ALq450hNbPNJ/ZtUCUJyLabKD2GW2+xTWjHHs+nZLdY8V7AgJe1RoYOt/COlqrakyJZa12Jir/S7ym1EAwFmUADndOTjBf1Rpn1w0vZFT9b5Z0ZZQLlvUPEv0TlNt30LpoOTAQaEfQ5+ix6ejeFTgWLlpjiTpJdiE0rd20Ao/Oxi9ijtDetB+XssVS5BS7KDRZhE5f/UeAexy0e/YiHapdjzjwhCUdjCAdMzN+7+rVKZGq/8MMGYt8sKS9bGXsNnIfKMKjb5ICPb2zgIAO+0VoYCV6ll7sqF70lcpYYcoN4jFr6lBX8fj/8JITfvQIkro/w4lnzTP64jxjz2spT41Ps6iZ+tw2SF81fZhcq9UaiChWKaI+OqGZKMej/mk6hXCVG7OcNIQnTUrKleZm1UrsCO2f0Uark2SiCAL5ZcK2r+qU0kC8k4FJtwe7mBZ/drJvuSG31bB6eRzaxi2hTwbA6n6AdHh+VEf2huxtUG5S7MNmAPfmy6dBNZQmMxOQ+Ai2KB+u5sanMjnP2AgBkXf/QX29R2pUqMkz/X7r1zflxaLWcYUlR8P2vN6EkHhxe0nsN8gfGrdWD4i1HvdxYM+h21Pfuc5miXhzX3OXl x-forefront-antispam-report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:CH0PR10MB4858.namprd10.prod.outlook.com;PTR:;CAT:NONE;SFS:(366004)(64756008)(66446008)(66556008)(76116006)(66946007)(66476007)(36756003)(6506007)(38070700005)(8936002)(8676002)(122000001)(6512007)(86362001)(2616005)(71200400001)(38100700002)(83380400001)(508600001)(5660300002)(6486002)(186003)(33656002)(6916009)(26005)(558084003)(2906002)(316002)(45980500001);DIR:OUT;SFP:1101; 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charset="us-ascii" Content-ID: <79219E30FF462E43A0B1AEF6518C3F34@namprd10.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: CH0PR10MB4858.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f7babfb1-08bf-4ff8-6b38-08d9c26ce42d X-MS-Exchange-CrossTenant-originalarrivaltime: 18 Dec 2021 21:25:18.9293 (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: RHG6tdGFDiBZBrvdDyA/Rdx941SMoOedKiU+AUyhlcy78FOEGag4EzSXCzuMJ7knzxN2vx1heb2cWXkkaH7FpA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH0PR10MB5498 X-Proofpoint-Virus-Version: vendor=nai engine=6300 definitions=10202 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=812 malwarescore=0 mlxscore=0 spamscore=0 adultscore=0 bulkscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2112180129 X-Proofpoint-GUID: 7wwXuQH4t7cit3VXfqPWgEKTN1skbL5N X-Proofpoint-ORIG-GUID: 7wwXuQH4t7cit3VXfqPWgEKTN1skbL5N Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org NFS/RDMA with an NFS client using mlx5-based hardware triggers a system deadlock (no error messages) on the client. I bisected to f0ae4afe3d35 ("RDMA/mlx5: Fix releasing unallocated memory in dereg MR flow"). -- Chuck Lever