OpenAI Codex Helps Uncover & Fix A Nearly 20 Year Old Radeon Linux Driver Bug
Sent out today was the latest batch of AMD kernel graphics/compute driver patches destined for the Linux 7.5 merge window opening up at year's end/ Besides a lot of fixes and continued work around new IP enablement for upcoming GPUs, there is even a fix for old ATI/AMD Radeon R600 era hardware after help from OpenAI's Codex...
A nearly 20-year-old Radeon Linux driver bug was uncovered and fixed thanks to OpenAI Codex. The bug caused video corruption on an older iMac7,1 (RV610/M74, device ID 1002:94c8) when the decoder read compressed video from system memory while the GPU was drawing. Moving the input to VRAM solved the issue. The patch proposal covers RV610, RV620, RV630, RV635, and RV670 chips, as they share the RV6xx decoder path and legacy R600 firmware. The patch was tested on Debian using Codex for investigation, testing, and patching.
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