CVE-2024-57888

/// Technical description

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

workqueue: Do not warn when cancelling WQ_MEM_RECLAIM work from !WQ_MEM_RECLAIM worker

After commit

746ae46c1113 ("drm/sched: Mark scheduler work queues with WQ_MEM_RECLAIM")

amdgpu started seeing the following warning:

[ ] workqueue: WQ_MEM_RECLAIM sdma0:drm_sched_run_job_work [gpu_sched] is flushing !WQ_MEM_RECLAIM events:amdgpu_device_delay_enable_gfx_off [amdgpu]

...

[ ] Workqueue: sdma0 drm_sched_run_job_work [gpu_sched]

...

[ ] Call Trace:

[ ] <TASK>

...

[ ] ? check_flush_dependency+0xf5/0x110

...

[ ] cancel_delayed_work_sync+0x6e/0x80

[ ] amdgpu_gfx_off_ctrl+0xab/0x140 [amdgpu]

[ ] amdgpu_ring_alloc+0x40/0x50 [amdgpu]

[ ] amdgpu_ib_schedule+0xf4/0x810 [amdgpu]

[ ] ? drm_sched_run_job_work+0x22c/0x430 [gpu_sched]

[ ] amdgpu_job_run+0xaa/0x1f0 [amdgpu]

[ ] drm_sched_run_job_work+0x257/0x430 [gpu_sched]

[ ] process_one_work+0x217/0x720

...

[ ] </TASK>

The intent of the verifcation done

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References