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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org References: Content-Language: en-US From: =?UTF-8?Q?Christian_K=C3=B6nig?= In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-ClientProxiedBy: FR4P281CA0195.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:ca::20) To SJ0PR12MB5673.namprd12.prod.outlook.com (2603:10b6:a03:42b::13) Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ0PR12MB5673:EE_|DS0PR12MB7745:EE_ X-MS-Office365-Filtering-Correlation-Id: 2aa306b3-c8b4-46c7-c0cb-08de3633b8bb X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|1800799024|366016|7053199007|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?B?eFdsN3dmYWluQTd1YnozM1dmWDYyaTd3MXdUV0pwcmU3dGRWbUVqckZ3ZEt5?= =?utf-8?B?MmdML0ZmcE9iWHRNN0JtU3FvalJ1N2xQVmowLzh4RUNERnVxeGNTWE91eWFC?= =?utf-8?B?VnVEV29JNW43eXZqVzZrRVMyMDdLS2JXVGNpaDJpSENGVlB4ekNCbkhER21L?= =?utf-8?B?MWJVYmQ5V2ZxaUlFU0g1TzEyYWoydUdxWndoM2pyMmxFaTdqaEJnclBFUEpx?= =?utf-8?B?R3dLMUdrek83UXBNSkYzTnlVSDY1Q042VDROMWNTYzFSdHJvaTZhM0tnUVR4?= =?utf-8?B?aWMrMS9LWU9EUm9jUkQyRk91c1o2ZzJNd0Y3aHdWMGJBVUxGdUgvajJ4S2Js?= =?utf-8?B?UVFzdE5Dd3VQNERRTFdCaDh4Mi9XZ2pXQS9aTURid1MveDYwQ0pwL2V2WTQr?= =?utf-8?B?bVZ1VnZBL0lURWt0ZDZob1VPcWhRdFcvMkIxQlZETUI3a0l3TldhMWlKbVhu?= =?utf-8?B?dlp4c3pkVEVDL1pkVk9yWjBkUnJnb21JcUhqaGpUd2dMaUdPWFE1MTlYQWZB?= =?utf-8?B?SzBNMVNmTjBCbWxwMnp4VExxZWozSk9yNUFHUk5VM3JqVjB6ZVhzb3NIMXVV?= =?utf-8?B?ZUxTdkdLOWNIallaL3BjK0RBRE12SHpvVmJkUjdjNWd4TjRIZ1BVbklhbURH?= =?utf-8?B?emx1K1EzWlJpWUdiZ2R5QkVpVWUyUzI5a2l2NnZvVy9ZaHcrZitHeEJaR2sw?= =?utf-8?B?L3pUMm9sNlZSZm9mWjlWTzk1eE4zT2crR1lrMDc0Wm1Fci9RT0xUbTNmWk82?= =?utf-8?B?ODhZb3RScUhqeVZraVFhYjI4dThsejFWWUo2NGlqZVM1aTFublFPRkZ2alZX?= =?utf-8?B?ZzRLYVB3VWg1cTlWOTI2bUU3VnNvVFZ3ZVVDanpjdWVnMTZ1cXZ3VHhWeEk4?= =?utf-8?B?SEtSa251bXltcDNwM1lsWlA5NjhRRUljY0FsSFVKMG5xZktnM09iNmdLbStJ?= =?utf-8?B?UGtPQ0VHTHFNZG1RRi9zRlF2N3VWL3ZaekxoK01IaUpmRnJzZU84N2owODdy?= =?utf-8?B?TXJsR2RlS0VBclVPL3N4bytPU2IxUDNZY2x2cGZOd29ZanNWdmh5UFR3Z3Yx?= =?utf-8?B?WVR0QlFRZ3AzWHpsNzExVWJDZlNhemlTd3V4b1ZUcjk3bXRjSmp5bGNHZmE0?= =?utf-8?B?TzF5elVaTytEZ1hnaFFGWWc1SE1XU3Z2QW4wbVlTOWVKNE04d0duOTQzdFhC?= =?utf-8?B?K1k5d1BHSXlkMnhkMHJtVmJiZTQ1d2FWc1RiNW5Oc2JQTFI1TzRMbjQwSkZG?= =?utf-8?B?YWFMSEtSNmVsWWorcUlqNVRVd0dnY2NKc1RzdmNqQ0Z0T0pkVU43T002YlFU?= =?utf-8?B?SHU2aXB6VENydXVUblFhWW1IZ3FCZmFoQkFPalNnbnd3M0d2L3lrSDVNa2g2?= =?utf-8?B?MlU2U2ZWaGFNay9hT2ZnUmc4VnFxOTVGMWxIeVJtSldPd254MWgva1pUVmZq?= =?utf-8?B?VnBDQ1JtYTZMcEtIZFh3NWJJdzkrSG9ZMW81MjJNWmlKYWo3dFJSMHBqaHJE?= =?utf-8?B?N3l0KzluNGRabnE4WEhhdDY2TURHQUVsT0NEQ1hLRDVEbjJhdlhhZ0ZOcVJ3?= =?utf-8?B?TkVRRlNCbXdjUGZVYjNReThjaWNINjlNTXREczBCQnQzL3ovaVo4N3E1RUVw?= =?utf-8?B?L0VpZU5zc0V2QVp6Q1hmN2p4bTBXMEJpYTB0Z2I3R0RQSlNydmxoWnRxenhE?= =?utf-8?B?eEtuMkNzckthclRKcmdqQmxyR1luQUVFTzlTcTNIbm1WT2dSSnJTakdCY01J?= =?utf-8?B?Mzc1NitHZ1h1YXNwMkgwNEtYdGF4L1FpSjlDUGVzNjU1ZmM3cGhBTTVzNzEw?= =?utf-8?B?ZDFDTG8yNlpvb01XRXRuLzVXVGVHblBOeUR5bkdDcjVkeVJKU0ZCS0NjUm5Z?= =?utf-8?B?eGw2c3U4VDFDQ2lsZzhkOWdwNU1rVTNTNnpJQTIvazhhVEJhdks5QUJ1UTNX?= =?utf-8?B?L2p4a1p4NmtRdGxzdmpMNnpkeURRZkg3S2Q1L0N6NXcyc3pPM3NZSE5BRlBZ?= =?utf-8?Q?DW1iB1cjnh3f32KkdG2Qo3P/LHAFDU=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SJ0PR12MB5673.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(7416014)(376014)(1800799024)(366016)(7053199007)(921020);DIR:OUT;SFP:1101; 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Just for my understanding: That is because CLONE_THREAD can only be specified together with CLONE_SIGHAND and CLONE_VM, correct? > > I don't think that drm/amd tries to detect/nack this case. > > Signed-off-by: Oleg Nesterov Seems to make sense of hand. Reviewed-by: Christian König Should we pick that one up or do you want to merge it upstream somehow? Regards, Christian. > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 --- > drivers/gpu/drm/amd/amdkfd/kfd_process.c | 10 ---------- > 2 files changed, 13 deletions(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > index a0f8ba382b9e..e44f158a11f0 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c > @@ -2551,9 +2551,6 @@ void amdgpu_vm_set_task_info(struct amdgpu_vm *vm) > vm->task_info->task.pid = current->pid; > get_task_comm(vm->task_info->task.comm, current); > > - if (current->group_leader->mm != current->mm) > - return; > - > vm->task_info->tgid = current->tgid; > get_task_comm(vm->task_info->process_name, current->group_leader); > } > diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c > index a085faac9fe1..f8ef18a3aa71 100644 > --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c > +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c > @@ -833,12 +833,6 @@ struct kfd_process *kfd_create_process(struct task_struct *thread) > if (!(thread->mm && mmget_not_zero(thread->mm))) > return ERR_PTR(-EINVAL); > > - /* Only the pthreads threading model is supported. */ > - if (thread->group_leader->mm != thread->mm) { > - mmput(thread->mm); > - return ERR_PTR(-EINVAL); > - } > - > /* If the process just called exec(3), it is possible that the > * cleanup of the kfd_process (following the release of the mm > * of the old process image) is still in the cleanup work queue. > @@ -918,10 +912,6 @@ struct kfd_process *kfd_get_process(const struct task_struct *thread) > if (!thread->mm) > return ERR_PTR(-EINVAL); > > - /* Only the pthreads threading model is supported. */ > - if (thread->group_leader->mm != thread->mm) > - return ERR_PTR(-EINVAL); > - > process = find_process(thread, false); > if (!process) > return ERR_PTR(-EINVAL);