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CAT:NONE; SFS:(4636009)(46966006)(36840700001)(1076003)(26005)(36756003)(70586007)(508600001)(2906002)(316002)(2876002)(36860700001)(36906005)(6286002)(5660300002)(54906003)(55016002)(8676002)(82310400003)(450100002)(7696005)(4326008)(2616005)(6916009)(70206006)(426003)(83380400001)(7636003)(336012)(16526019)(6666004)(86362001)(186003)(356005)(47076005)(8936002); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 17 Nov 2021 11:03:17.1383 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9a7050d5-409f-47e8-fa13-08d9a9b9dbe7 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.34]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT042.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5326 X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org From: Michael Baum The "mlx5_devx_cmd_mkey_create" DevX cmd allocates DevX object using mlx5_malloc and then creates MKey using glue function. Compatibly, "mlx5_devx_cmd_destroy" cmd releases first the MKey using glue function, and then free the DevX object using mlx5_free. On Windows OS, the reg_mr function creates Mkey using "mlx5_devx_cmd_mkey_create" cmd, but dereg_mr function using directly glue function without freeing the object. This behavior causes memory leak at each MR release. In addition, the dereg_mr function makes sure that the MR pointer is valid before destroying its fields, but always calls the memset function that makes a difference to it. This patch moves the dereg_mr function to use "mlx5_devx_cmd_destroy" instead of glue function, and extends the validity test to the whole function. Fixes: ba420719823c ("common/mlx5: add reg/dereg MR on Windows") Cc: stable@dpdk.org Signed-off-by: Michael Baum Acked-by: Matan Azrad --- drivers/common/mlx5/windows/mlx5_common_os.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/common/mlx5/windows/mlx5_common_os.c b/drivers/common/mlx5/windows/mlx5_common_os.c index 5fb45d12ea..162c7476cc 100644 --- a/drivers/common/mlx5/windows/mlx5_common_os.c +++ b/drivers/common/mlx5/windows/mlx5_common_os.c @@ -368,9 +368,11 @@ mlx5_os_reg_mr(void *pd, static void mlx5_os_dereg_mr(struct mlx5_pmd_mr *pmd_mr) { - if (pmd_mr && pmd_mr->mkey) - claim_zero(mlx5_glue->devx_obj_destroy(pmd_mr->mkey->obj)); - if (pmd_mr && pmd_mr->obj) + if (!pmd_mr) + return; + if (pmd_mr->mkey) + claim_zero(mlx5_devx_cmd_destroy(pmd_mr->mkey)); + if (pmd_mr->obj) claim_zero(mlx5_os_umem_dereg(pmd_mr->obj)); memset(pmd_mr, 0, sizeof(*pmd_mr)); } -- 2.25.1