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Miller" Cc: netdev@vger.kernel.org, Parav Pandit , Roi Dayan , Eli Cohen , Saeed Mahameed Subject: [net 3/8] net/mlx5: E-switch, Fix mutex init order Date: Wed, 29 Apr 2020 15:54:44 -0700 Message-Id: <20200429225449.60664-4-saeedm@mellanox.com> X-Mailer: git-send-email 2.25.4 In-Reply-To: <20200429225449.60664-1-saeedm@mellanox.com> References: <20200429225449.60664-1-saeedm@mellanox.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: BY5PR04CA0022.namprd04.prod.outlook.com (2603:10b6:a03:1d0::32) To VI1PR05MB5102.eurprd05.prod.outlook.com (2603:10a6:803:5e::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from smtp.office365.com (73.15.39.150) by BY5PR04CA0022.namprd04.prod.outlook.com (2603:10b6:a03:1d0::32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2958.20 via Frontend Transport; Wed, 29 Apr 2020 22:55:15 +0000 X-Mailer: git-send-email 2.25.4 X-Originating-IP: [73.15.39.150] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: dde5075c-3e46-4e31-914c-08d7ec906282 X-MS-TrafficTypeDiagnostic: VI1PR05MB5247:|VI1PR05MB5247: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2043; X-Forefront-PRVS: 03883BD916 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:VI1PR05MB5102.eurprd05.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(396003)(39860400002)(366004)(136003)(346002)(376002)(54906003)(478600001)(6512007)(2906002)(66556008)(6916009)(66476007)(316002)(107886003)(6486002)(52116002)(6506007)(66946007)(6666004)(2616005)(186003)(8676002)(16526019)(26005)(86362001)(8936002)(36756003)(1076003)(5660300002)(4326008)(956004)(54420400002);DIR:OUT;SFP:1101; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: Mellanox.com X-MS-Exchange-CrossTenant-Network-Message-Id: dde5075c-3e46-4e31-914c-08d7ec906282 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Apr 2020 22:55:17.0483 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: a652971c-7d2e-4d9b-a6a4-d149256f461b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Setb+W4C81N+lU4xI4zKOF8FdoUk+NxIeBulDfL4Goy76v9E0uyJ1HsfwcWwQcGUQ6c3lu0/ko+CzBaBkEy+cw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR05MB5247 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Parav Pandit In cited patch mutex is initialized after its used. Below call trace is observed. Fix the order to initialize the mutex early enough. Similarly follow mirror sequence during cleanup. kernel: DEBUG_LOCKS_WARN_ON(lock->magic != lock) kernel: WARNING: CPU: 5 PID: 45916 at kernel/locking/mutex.c:938 __mutex_lock+0x7d6/0x8a0 kernel: Call Trace: kernel: ? esw_vport_tbl_get+0x3b/0x250 [mlx5_core] kernel: ? mark_held_locks+0x55/0x70 kernel: ? __slab_free+0x274/0x400 kernel: ? lockdep_hardirqs_on+0x140/0x1d0 kernel: esw_vport_tbl_get+0x3b/0x250 [mlx5_core] kernel: ? mlx5_esw_chains_create_fdb_prio+0xa57/0xc20 [mlx5_core] kernel: mlx5_esw_vport_tbl_get+0x88/0xf0 [mlx5_core] kernel: mlx5_esw_chains_create+0x2f3/0x3e0 [mlx5_core] kernel: esw_create_offloads_fdb_tables+0x11d/0x580 [mlx5_core] kernel: esw_offloads_enable+0x26d/0x540 [mlx5_core] kernel: mlx5_eswitch_enable_locked+0x155/0x860 [mlx5_core] kernel: mlx5_devlink_eswitch_mode_set+0x1af/0x320 [mlx5_core] kernel: devlink_nl_cmd_eswitch_set_doit+0x41/0xb0 Fixes: 96e326878fa5 ("net/mlx5e: Eswitch, Use per vport tables for mirroring") Signed-off-by: Parav Pandit Reviewed-by: Roi Dayan Reviewed-by: Eli Cohen Signed-off-by: Saeed Mahameed --- .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c index 8289af360e8d..5d9def18ae3a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c @@ -2219,10 +2219,12 @@ static int esw_offloads_steering_init(struct mlx5_eswitch *esw) total_vports = num_vfs + MLX5_SPECIAL_VPORTS(esw->dev); memset(&esw->fdb_table.offloads, 0, sizeof(struct offloads_fdb)); + mutex_init(&esw->fdb_table.offloads.vports.lock); + hash_init(esw->fdb_table.offloads.vports.table); err = esw_create_uplink_offloads_acl_tables(esw); if (err) - return err; + goto create_acl_err; err = esw_create_offloads_table(esw, total_vports); if (err) @@ -2240,9 +2242,6 @@ static int esw_offloads_steering_init(struct mlx5_eswitch *esw) if (err) goto create_fg_err; - mutex_init(&esw->fdb_table.offloads.vports.lock); - hash_init(esw->fdb_table.offloads.vports.table); - return 0; create_fg_err: @@ -2253,18 +2252,19 @@ static int esw_offloads_steering_init(struct mlx5_eswitch *esw) esw_destroy_offloads_table(esw); create_offloads_err: esw_destroy_uplink_offloads_acl_tables(esw); - +create_acl_err: + mutex_destroy(&esw->fdb_table.offloads.vports.lock); return err; } static void esw_offloads_steering_cleanup(struct mlx5_eswitch *esw) { - mutex_destroy(&esw->fdb_table.offloads.vports.lock); esw_destroy_vport_rx_group(esw); esw_destroy_offloads_fdb_tables(esw); esw_destroy_restore_table(esw); esw_destroy_offloads_table(esw); esw_destroy_uplink_offloads_acl_tables(esw); + mutex_destroy(&esw->fdb_table.offloads.vports.lock); } static void -- 2.25.4