CVE-2021-47410 drm/amdkfd: fix svm_migrate_fini warning

2024-05-2115:04:01

Linux

www.cve.org

linux kernel

device manager

driver disconnects

warning trace

devm_memunmap_pages

devm_release_mem_region

fix svm_migrate_fini

patch

amdgpu

issue 1718

cpu

pid

drivers/base/devres.c

kgd2kfd_device_exit

amdgpu_amdkfd_device_fini_sw

amdgpu_device_fini_sw

amdgpu_driver_release_kms

drm_dev_release

device_release_driver_internal

driver_detach

bus_remove_driver

pci_unregister_driver

amdgpu_exit

6.4 Medium

AI Score

Confidence

Low

0.0004 Low

EPSS

Percentile

9.1%

JSON

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: fix svm_migrate_fini warning

Device manager releases device-specific resources when a driver
disconnects from a device, devm_memunmap_pages and
devm_release_mem_region calls in svm_migrate_fini are redundant.

It causes below warning trace after patch “drm/amdgpu: Split
amdgpu_device_fini into early and late”, so remove function
svm_migrate_fini.

BUG: https://gitlab.freedesktop.org/drm/amd/-/issues/1718

WARNING: CPU: 1 PID: 3646 at drivers/base/devres.c:795
devm_release_action+0x51/0x60
Call Trace:
? memunmap_pages+0x360/0x360
svm_migrate_fini+0x2d/0x60 [amdgpu]
kgd2kfd_device_exit+0x23/0xa0 [amdgpu]
amdgpu_amdkfd_device_fini_sw+0x1d/0x30 [amdgpu]
amdgpu_device_fini_sw+0x45/0x290 [amdgpu]
amdgpu_driver_release_kms+0x12/0x30 [amdgpu]
drm_dev_release+0x20/0x40 [drm]
release_nodes+0x196/0x1e0
device_release_driver_internal+0x104/0x1d0
driver_detach+0x47/0x90
bus_remove_driver+0x7a/0xd0
pci_unregister_driver+0x3d/0x90
amdgpu_exit+0x11/0x20 [amdgpu]

CNA Affected

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/amdkfd/kfd_device.c",
      "drivers/gpu/drm/amd/amdkfd/kfd_migrate.c",
      "drivers/gpu/drm/amd/amdkfd/kfd_migrate.h"
    ],
    "versions": [
      {
        "version": "1da177e4c3f4",
        "lessThan": "ac7d732b24f4",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "1da177e4c3f4",
        "lessThan": "197ae17722e9",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/amd/amdkfd/kfd_device.c",
      "drivers/gpu/drm/amd/amdkfd/kfd_migrate.c",
      "drivers/gpu/drm/amd/amdkfd/kfd_migrate.h"
    ],
    "versions": [
      {
        "version": "5.14.11",
        "lessThanOrEqual": "5.14.*",
        "status": "unaffected",
        "versionType": "custom"
      },
      {
        "version": "5.15",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]