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 2D7A1C433F5 for ; Wed, 22 Dec 2021 10:14:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234797AbhLVKOQ (ORCPT ); Wed, 22 Dec 2021 05:14:16 -0500 Received: from mail-dm6nam12on2074.outbound.protection.outlook.com ([40.107.243.74]:44800 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S234441AbhLVKOP (ORCPT ); Wed, 22 Dec 2021 05:14:15 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=WGYA0ELo1E7Jta9xzhkY8GDOGQ6LyVpwBUXGx+nkXnZ6APeeJb/jiOj65r0PUQWI2EH12bwoPmn9swBIU84yFQVmlZf2Uzn+tVGHikLszBR+6E0oI4kQKNpWzSDZmIzseR+5E1lqKSw1X1qjIU8FSqcVDieDEpapMmkrJFDYHwHsQ4M/HeCFQYcaRjJVsmyL7eFI+8tqBRQ30HgIMWaO64seZpKGXiyzn2iX7Y0qMlxmi6jrGed+eRwHxjs+Et8fwqF1H+AxGuq2qowhnhSyQ6nFATno2F+gQgZeNHHPsdcNTNz1hBjSG3g7NMKZ5aUq4FqEfKDif4CYVbNVNJX1eQ== 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=UuM3mR5/5GOgUnAllgxZfIwi92abGZQToskkugOXdOc=; b=iML3+BSjDJFUVG4zFYiqXaRNGgSA7BmpkQbVOEKTvTtB+FaTgK75cm8FgrHssJkO6YF+EKnFJIb3zq4NXjWyBxh1UCeFnydhkD0MOzn49VZrgT5QP4/ZFEYN1S3j18MUQ+w3dwAN3xyiFS7mLImLIidODL2n0vVTlOETbNPL/OQYzYSlLwz/j5QLfazoRI2b5JC9554O6HSYp4bWCxcW0o7J05ibSsvoU0TA7HWhroo0/KBaSw6HvoYvSOymtAN/QpvwLk4wathUZ5FEu4UTpJMen2duLA6HUc4GDBusou2xFvxmCyLfjxP41GzbyA4RmpqD6Tbd0ayaDtrpvUlksg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nvidia.com; dmarc=pass action=none header.from=nvidia.com; dkim=pass header.d=nvidia.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=UuM3mR5/5GOgUnAllgxZfIwi92abGZQToskkugOXdOc=; b=HohhYQvU4x2z0jr5ddBPnCEx6wsJSshH1yq1084fJX1cVhWTPY8DRW2hgukkrhgmwN4ce0J5TauQDAIRcYPWR+6sbusEkzBDmyso7EwaTiInS1taaHi0tXMjqD8E624OWwYWv0xLAdGjRMgmXL3xsvupdyMlngHVY6fhVqNNAipm2Hed+/LW6rPvc5sI9PQ0lrX78TuEsPlJTCli/24nTy+ocaqCzPLEk3OcKEGYJfr5PVczWSdz645mmIoyIwwcphpvqGtQ+bWbhyURD1Tes+xB6F1gR2wRPERKEN0LaBfnPFKqD56pO6oIFj4pHA03CGhEgOHglqb4ZagLsLJXFA== Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nvidia.com; Received: from DM4PR12MB5296.namprd12.prod.outlook.com (2603:10b6:5:39d::21) by DM6PR12MB5518.namprd12.prod.outlook.com (2603:10b6:5:1b9::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4823.16; Wed, 22 Dec 2021 10:14:14 +0000 Received: from DM4PR12MB5296.namprd12.prod.outlook.com ([fe80::8515:d530:cd95:53dc]) by DM4PR12MB5296.namprd12.prod.outlook.com ([fe80::8515:d530:cd95:53dc%4]) with mapi id 15.20.4801.014; Wed, 22 Dec 2021 10:14:14 +0000 From: Maor Gottlieb To: jgg@nvidia.com Cc: alaa@nvidia.com, chuck.lever@oracle.com, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, tonylu@linux.alibaba.com, leon@kernel.org Subject: [PATCH rdma-rc] Revert "RDMA/mlx5: Fix releasing unallocated memory in dereg MR flow" Date: Wed, 22 Dec 2021 12:13:12 +0200 Message-Id: <20211222101312.1358616-1-maorg@nvidia.com> X-Mailer: git-send-email 2.25.4 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: AM6P194CA0094.EURP194.PROD.OUTLOOK.COM (2603:10a6:209:8f::35) To DM4PR12MB5296.namprd12.prod.outlook.com (2603:10b6:5:39d::21) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 1aba2732-3f21-4983-5280-08d9c533cdfd X-MS-TrafficTypeDiagnostic: DM6PR12MB5518:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:127; 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:DM4PR12MB5296.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(366004)(86362001)(83380400001)(2906002)(316002)(2616005)(508600001)(34206002)(4326008)(6512007)(8936002)(66476007)(8676002)(5660300002)(6486002)(1076003)(6636002)(66556008)(6506007)(38350700002)(52116002)(38100700002)(37006003)(36756003)(186003)(26005)(66946007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?rQdUZ39jOGbE5EFUpoCSReCQZSJYwTsB9gAJnRv6MwptJpbtV6NjUribARvU?= =?us-ascii?Q?kDJDyij8gHBk04ZRluC5nTabvQt8QcwOPtbHa3T6GF8zOCyXtpvQsxqTA/r4?= =?us-ascii?Q?9P3RcS6WSSdRcmKhY5MlkcUiIa7gWpHB0v331gbIUe4c68p+O9gwEZowNNgs?= =?us-ascii?Q?Uh6RsSRrNPCe/iSzykh2tMOyyMFG/rYHiUn21X10xd3kW+j4hcSqvTalhUpm?= =?us-ascii?Q?lK3WcXpb+VOKRF+jGD/z35pe/0d6BA1eL+Tx/bU6tEYsqKiB9rJqdUuQptXz?= =?us-ascii?Q?tapgBaYmVImhHFOn2JL0UzipmEP7EdTyNuKYg1qXG4fknRS7/HdYd4e4gg5H?= =?us-ascii?Q?fsT3u89SJtaCUSrT1Ou3ObQwW27ZuH4h9AJXducugeo107/ikB/iDYEzDrJJ?= =?us-ascii?Q?hLChkWr0vAjgPmAiLhFxJ4ZIW7j0BOJcpTQyupgItCdCHK+jHYTdByNQZR+4?= =?us-ascii?Q?XNNuwIZx6iriETCulx6KjATFJmwNtkUqmCPrOLl66XMo0yVJ4Q00/sczxKEv?= =?us-ascii?Q?iLzYSSZrwvqZumVETuPYaq6rdIDKoywljgbUa5v8+ztmsKEcNVkKDvq6GuYO?= =?us-ascii?Q?WA76Kr7fCu71wYBAOWEYGHeInZ65bRFwVhHbwbEPQiyJuVByqmWpPeGZ63sQ?= =?us-ascii?Q?+l6cK194uVWb7Mpvjocs4wgW6pCpK57UQM3BhB3j+rZ4coZp9sUsz1wL3mf5?= =?us-ascii?Q?9yrHBA+ehIbZpKTF4wOOY/J+RnG//HHV2Y2KGvGw4Ks0kSCp7LBXW7KlLS44?= =?us-ascii?Q?zKfujyn7e3MTO5bfvo5FLkDjtZ/vrVFUE4dFH3uUYrZDOqcF0TeKlg4N4ksW?= =?us-ascii?Q?kmp6cIaEjq6/kZHhF+o/ElivuJkxVdHkgN/8WMYOlIKzD68WDgwshBqW3oLK?= =?us-ascii?Q?3x8s7Ot6IKzs/7F75STOot+HymFs0OFAG17qzi+8ukh1ERuUmjn7sD0SJfJ8?= =?us-ascii?Q?Le7hHbemprxwcKJrXloeWor2Y+XN3iQ/Ad/nSdKDAiOcE5NCzA2RExJWwKAU?= =?us-ascii?Q?9k3ifvP//pS2VXy9Qaxxw3fMHzJxxqoyGvxtrYbA0mlk5NWgPdjchYiYIoji?= =?us-ascii?Q?nueTPqahL9vHfcLWGLiok4BHZfHfHC73zXG7qD1shwld1rpQzoVUzvKoTTCg?= =?us-ascii?Q?yff2NZKv0EnenPgl4qTlsyjUu8lMyEbldcBj2WlUxXL5IG/eFNX0wVDciYij?= =?us-ascii?Q?H0HwNiz4KVbUC5Gb4yXCFSqkPYOVMWcvgXAOYKMebq/6AOTpTk0qXqMDQ0V4?= =?us-ascii?Q?y1vsHBhSuMKA2tJ8QOZSynC8gJrqASBYuOY1Xtoos0CFBegNG7oZbqzC6FG1?= =?us-ascii?Q?tLZ96nOctJKnrgBSRPkjAdHagHuA9WzFF735nnewDQvCPjbpw06C2r3wIt0Z?= =?us-ascii?Q?mwaEAVnIRjQb5spzNoQdnsrRW3uIPyRmIZ+ly3bsLNzwsaHfPYavWCDyfwCU?= =?us-ascii?Q?W+zUv7L4bHiw5uS4WMDvAODlUo5PbIWVP8bJJKg+2CDrpLCuxxmDMuSRGvUO?= =?us-ascii?Q?zMHlqOMMCH4KzAagDbN2nWvCm471XCzN5VHTxsI7Fmzzfe1MQ5Lce+/c/cqw?= =?us-ascii?Q?FdQ4Du5B7wueviaWs4s972SjEuuQQJtppQR70DmipkfOBYskVzyjhUJRNgZp?= =?us-ascii?Q?l0DqEMbyKG+/JXGbQHOdBTA=3D?= X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-Network-Message-Id: 1aba2732-3f21-4983-5280-08d9c533cdfd X-MS-Exchange-CrossTenant-AuthSource: DM4PR12MB5296.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Dec 2021 10:14:14.1133 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Hkhq5ylhtp9203eg0zdPXv3qjROfwolu0uFgmMEkd4CgBPA0MTK3FFx/VTLgy8+8SJHKdzY7SlG7DUF4dBQvgA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB5518 Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org This patch is not the full fix and still causes to call traces during mlx5_ib_dereg_mr(). This reverts commit f0ae4afe3d35e67db042c58a52909e06262b740f. Fixes: f0ae4afe3d35 ("RDMA/mlx5: Fix releasing unallocated memory in dereg MR flow") Signed-off-by: Maor Gottlieb --- drivers/infiniband/hw/mlx5/mlx5_ib.h | 6 +++--- drivers/infiniband/hw/mlx5/mr.c | 26 ++++++++++++++------------ 2 files changed, 17 insertions(+), 15 deletions(-) diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 4a7a56ed740b..e636e954f6bf 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -664,6 +664,7 @@ struct mlx5_ib_mr { /* User MR data */ struct mlx5_cache_ent *cache_ent; + struct ib_umem *umem; /* This is zero'd when the MR is allocated */ union { @@ -675,7 +676,7 @@ struct mlx5_ib_mr { struct list_head list; }; - /* Used only by kernel MRs */ + /* Used only by kernel MRs (umem == NULL) */ struct { void *descs; void *descs_alloc; @@ -696,9 +697,8 @@ struct mlx5_ib_mr { int data_length; }; - /* Used only by User MRs */ + /* Used only by User MRs (umem != NULL) */ struct { - struct ib_umem *umem; unsigned int page_shift; /* Current access_flags */ int access_flags; diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 63e2129f1142..157d862fb864 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -1904,18 +1904,19 @@ mlx5_alloc_priv_descs(struct ib_device *device, return ret; } -static void mlx5_free_priv_descs(struct mlx5_ib_mr *mr) +static void +mlx5_free_priv_descs(struct mlx5_ib_mr *mr) { - struct mlx5_ib_dev *dev = to_mdev(mr->ibmr.device); - int size = mr->max_descs * mr->desc_size; - - if (!mr->descs) - return; + if (!mr->umem && mr->descs) { + struct ib_device *device = mr->ibmr.device; + int size = mr->max_descs * mr->desc_size; + struct mlx5_ib_dev *dev = to_mdev(device); - dma_unmap_single(&dev->mdev->pdev->dev, mr->desc_map, size, - DMA_TO_DEVICE); - kfree(mr->descs_alloc); - mr->descs = NULL; + dma_unmap_single(&dev->mdev->pdev->dev, mr->desc_map, size, + DMA_TO_DEVICE); + kfree(mr->descs_alloc); + mr->descs = NULL; + } } int mlx5_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) @@ -1991,8 +1992,7 @@ int mlx5_ib_dereg_mr(struct ib_mr *ibmr, struct ib_udata *udata) if (mr->cache_ent) { mlx5_mr_cache_free(dev, mr); } else { - if (!udata) - mlx5_free_priv_descs(mr); + mlx5_free_priv_descs(mr); kfree(mr); } return 0; @@ -2079,6 +2079,7 @@ static struct mlx5_ib_mr *mlx5_ib_alloc_pi_mr(struct ib_pd *pd, if (err) goto err_free_in; + mr->umem = NULL; kfree(in); return mr; @@ -2205,6 +2206,7 @@ static struct ib_mr *__mlx5_ib_alloc_mr(struct ib_pd *pd, } mr->ibmr.device = pd->device; + mr->umem = NULL; switch (mr_type) { case IB_MR_TYPE_MEM_REG: -- 2.25.4