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CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:satlexmb07.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(82310400026)(1800799024)(376014); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Oct 2025 07:31:24.7935 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8540e363-3dab-4dda-ec71-08de113d0183 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ5PEPF000001D4.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5974 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" This commit finds the proper kfd_process by filep->private_data in kfd_mmap, because the function kfd_get_process() can not locate a specific kfd process among multiple contexts. Signed-off-by: Zhu Lingshan Reviewed-by: Felix Kuehling --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index d1cb22f48b00..73de2de8be0f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -3410,16 +3410,19 @@ static int kfd_mmio_mmap(struct kfd_node *dev, struct kfd_process *process, } -static int kfd_mmap(struct file *filp, struct vm_area_struct *vma) +static int kfd_mmap(struct file *filep, struct vm_area_struct *vma) { struct kfd_process *process; struct kfd_node *dev = NULL; unsigned long mmap_offset; unsigned int gpu_id; - process = kfd_get_process(current); - if (IS_ERR(process)) - return PTR_ERR(process); + process = filep->private_data; + if (!process) + return -ESRCH; + + if (process->lead_thread != current->group_leader) + return -EBADF; mmap_offset = vma->vm_pgoff << PAGE_SHIFT; gpu_id = KFD_MMAP_GET_GPU_ID(mmap_offset); -- 2.51.0