# Core dump epidemiology: fixing an 18-year-old bug

DevFeed: [Core dump epidemiology: fixing an 18-year-old bug](<https://devfeed.tech/articles/core-dump-epidemiology-fixing-an-18-year-old-bug-6359.md>)

Original publisher: [Read original article](<https://openai.com/index/core-dump-epidemiology-data-infrastructure-bug>)

Published: 2026-06-30T00:00:00Z

Content type: article

Language: en

Sources: [OpenAI News](<https://devfeed.tech/sources/openai-news.md>)

Topics: [bug](<https://devfeed.tech/topics/bug.md>), [OpenAI](<https://devfeed.tech/topics/openai.md>), [Rockset](<https://devfeed.tech/topics/rockset.md>), [C++](<https://devfeed.tech/topics/c-plus-plus.md>), [Data Infrastructure](<https://devfeed.tech/topics/data-infrastructure.md>), [Azure](<https://devfeed.tech/topics/azure.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [race-condition](<https://devfeed.tech/topics/race-condition.md>), [Open Source](<https://devfeed.tech/topics/open-source.md>), [Streaming](<https://devfeed.tech/topics/streaming.md>)

Tags: [azure](<https://devfeed.tech/tags/azure.md>), [bug](<https://devfeed.tech/tags/bug.md>), [c-plus-plus](<https://devfeed.tech/tags/c-plus-plus.md>), [data-infrastructure](<https://devfeed.tech/tags/data-infrastructure.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [open-source](<https://devfeed.tech/tags/open-source.md>), [openai](<https://devfeed.tech/tags/openai.md>), [race-condition](<https://devfeed.tech/tags/race-condition.md>), [software](<https://devfeed.tech/tags/software.md>)

## AI overview

OpenAI engineers analyzed a large population of core dumps to investigate rare crashes in the Rockset service. The investigation uncovered two unrelated causes: silent CPU corruption on an Azure host and an 18-year-old race condition in GNU libunwind.

## Source excerpt

OpenAI engineers used large-scale core dump analysis to debug rare infrastructure crashes, uncovering both a hardware fault and a long-standing software bug.