fkie_cve-2022-49133
Vulnerability from fkie_nvd
Published
2025-02-26 07:00
Modified
2025-02-26 07:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: svm range restore work deadlock when process exit kfd_process_notifier_release flush svm_range_restore_work which calls svm_range_list_lock_and_flush_work to flush deferred_list work, but if deferred_list work mmput release the last user, it will call exit_mmap -> notifier_release, it is deadlock with below backtrace. Move flush svm_range_restore_work to kfd_process_wq_release to avoid deadlock. Then svm_range_restore_work take task->mm ref to avoid mm is gone while validating and mapping ranges to GPU. Workqueue: events svm_range_deferred_list_work [amdgpu] Call Trace: wait_for_completion+0x94/0x100 __flush_work+0x12a/0x1e0 __cancel_work_timer+0x10e/0x190 cancel_delayed_work_sync+0x13/0x20 kfd_process_notifier_release+0x98/0x2a0 [amdgpu] __mmu_notifier_release+0x74/0x1f0 exit_mmap+0x170/0x200 mmput+0x5d/0x130 svm_range_deferred_list_work+0x104/0x230 [amdgpu] process_one_work+0x220/0x3c0
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897
Impacted products
Vendor Product Version


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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: svm range restore work deadlock when process exit\n\nkfd_process_notifier_release flush svm_range_restore_work\nwhich calls svm_range_list_lock_and_flush_work to flush deferred_list\nwork, but if deferred_list work mmput release the last user, it will\ncall exit_mmap -\u003e notifier_release, it is deadlock with below backtrace.\n\nMove flush svm_range_restore_work to kfd_process_wq_release to avoid\ndeadlock. Then svm_range_restore_work take task-\u003emm ref to avoid mm is\ngone while validating and mapping ranges to GPU.\n\nWorkqueue: events svm_range_deferred_list_work [amdgpu]\nCall Trace:\n wait_for_completion+0x94/0x100\n __flush_work+0x12a/0x1e0\n __cancel_work_timer+0x10e/0x190\n cancel_delayed_work_sync+0x13/0x20\n kfd_process_notifier_release+0x98/0x2a0 [amdgpu]\n __mmu_notifier_release+0x74/0x1f0\n exit_mmap+0x170/0x200\n mmput+0x5d/0x130\n svm_range_deferred_list_work+0x104/0x230 [amdgpu]\n process_one_work+0x220/0x3c0"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amdkfd: bloqueo del trabajo de restauraci\u00f3n de rango de svm cuando el proceso sale kfd_process_notifier_release limpia svm_range_restore_work que llama a svm_range_list_lock_and_flush_work para limpiar el trabajo de deferred_list, pero si el trabajo de deferred_list mmput libera al \u00faltimo usuario, llamar\u00e1 a exit_mmap -\u0026gt; notifier_release, es un bloqueo con el siguiente backtrace. Mueva el vaciado de svm_range_restore_work a kfd_process_wq_release para evitar el bloqueo. Luego, svm_range_restore_work toma la referencia task-\u0026gt;mm para evitar que mm desaparezca mientras se validan y asignan rangos a la GPU. Cola de trabajo: eventos svm_range_deferred_list_work [amdgpu] Seguimiento de llamadas: wait_for_completion+0x94/0x100 __flush_work+0x12a/0x1e0 __cancel_work_timer+0x10e/0x190 cancel_delayed_work_sync+0x13/0x20 kfd_process_notifier_release+0x98/0x2a0 [amdgpu] __mmu_notifier_release+0x74/0x1f0 exit_mmap+0x170/0x200 mmput+0x5d/0x130 svm_range_deferred_list_work+0x104/0x230 [amdgpu] process_one_work+0x220/0x3c0"
    }
  ],
  "id": "CVE-2022-49133",
  "lastModified": "2025-02-26T07:00:50.590",
  "metrics": {},
  "published": "2025-02-26T07:00:50.590",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6225bb3a88d22594aacea2485dc28ca12d596721"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/858822905f4bf44100d63c5e22e263109976f7cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a6be83086e91891081e0589e4b4645bf4643e897"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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