OpenAI Fixes 18-Year-Old GNU libunwind Bug by Treating Crash Debugging Like Epidemiology

OpenAI engineers resolved a persistent data corruption issue in ChatGPT by identifying a rare, 18-year-old bug within the GNU libunwind library alongside silent hardware failures on Azure. By treating the software instability as an epidemiological problem rather than a standard code error, the team isolated a race condition in the setcontext function. This discovery underscores the complexity of maintaining large-scale infrastructure, as developers must now account for legacy vulnerabilities and intermittent hardware faults that can mimic one another.