Linux Kernel AMDGPU Graphics V11.0 Interrupt Handling Vulnerability

A vulnerability has been identified in the Linux kernel's handling of graphics processing unit (GPU) interrupts for the AMDGPU driver, specifically in the V11.0 graphics architecture. The issue arises because the interrupt functions for error correction code (ECC) have been retired in this version, but the hardware finalization routine still attempts to disable the interrupt. This oversight leads to a problematic call trace, indicating a potential flaw in the interrupt management process.

Impact

The vulnerability can cause a call trace error, disrupting the normal workflow of the graphics processing unit's hardware finalization process.

Reproduction

The vulnerability can be reproduced by initializing the graphics V11.0 software and then calling the hardware finalization routine. The finalization process will attempt to disable the retired ECC error interrupt, generating a call trace error.

Remediation

Users can upgrade to a patched version of the Linux kernel where this vulnerability has been addressed.