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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: d8a93cb0-c452-4f8b-aa90-08d9aec0c832 X-MS-Exchange-CrossTenant-originalarrivaltime: 23 Nov 2021 20:35:26.3760 (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: yVwzZojuGo7eERuiQAZQqZQ+jO7AIQqdQWE8PeZu0P8yvUDLwRWwP1t7XAVoCYoo+36XaSB1jYMgNUvP5d7tPg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB5088 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: Dariusz Sosnowski > Sent: Tuesday, November 23, 2021 5:38 PM > To: Matan Azrad ; Slava Ovsiienko > ; Dmitry Kozlyuk > Cc: dev@dpdk.org; Raslan Darawsheh ; > stable@dpdk.org > Subject: [PATCH v4] net/mlx5: fix refcount on detached indirect action >=20 > This patch fixes segfault which was triggered when port, with indirect ac= tions > created, was closed. Segfault was occurring only when > RTE_LIBRTE_MLX5_DEBUG was defined. It was caused by redundant > decrement of RX queues refcount: >=20 > - refcount was decremented when port was stopped and indirect actions > were detached from RX queues (port stop), > - refcount was decremented when indirect actions objects were destroyed > (port close or destroying of indirect action). >=20 > This patch fixes behavior. Dereferencing RX queues is done if and only if > indirect action is explicitly destroyed by the user or detached on port s= top. > Dereferencing RX queues on action destroy operation depends on an > argument to the wrapper of indirect action destroy operation, introduced = in > this patch. >=20 > Fixes: ec4e11d41d12 ("net/mlx5: preserve indirect actions on restart") > Cc: dkozlyuk@nvidia.com > Cc: stable@dpdk.org >=20 > Signed-off-by: Dariusz Sosnowski > Acked-by: Matan Azrad > --- > v4: > * Simplify dev_started checking. > * Remove redundant passes of deref_rxqs argument. >=20 > v3: > * Fix handling action destroy in between port start and stop. > * Revert moving contents of mlx5_action_handle_destroy >=20 > v2: > * Introduce wrapper over action action destroy operation. > * Fix typos in commit message. >=20 Patch applied to next-net-mlx, Kindest regards, Raslan Darawsheh