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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: DM4PR12MB5312.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 98d53c6c-b309-458c-f42f-08d9a9d8c2d3 X-MS-Exchange-CrossTenant-originalarrivaltime: 17 Nov 2021 14:44:29.5291 (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: 7l+BC9NN/lL+QAEXmt31sYtIl3V8JYF63+QZ2h2i/uy+zsclsqeb2XLNYKOCwddVFYjFiakdg36bXOvbUoVK9A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5152 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 Hi, > -----Original Message----- > From: Michael Baum > Sent: Wednesday, November 17, 2021 1:03 PM > To: dev@dpdk.org > Cc: Matan Azrad ; Raslan Darawsheh > ; Slava Ovsiienko ; Michael > Baum ; stable@dpdk.org > Subject: [PATCH] common/mlx5: fix memory leak in Windows dereg MR > function >=20 > From: Michael Baum >=20 > 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. >=20 > 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. >=20 > 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. >=20 > 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. >=20 > Fixes: ba420719823c ("common/mlx5: add reg/dereg MR on Windows") > Cc: stable@dpdk.org >=20 > Signed-off-by: Michael Baum > Acked-by: Matan Azrad Patch applied to next-net-mlx, Kindest regards, Raslan Darawsheh