EmbeddingGemma 2: an open, lightweight multimodal embedding model
deepmind.google·6d ago
AI Engineering
Lobsters·Aug 25·5 min read
Hunting Down a Go Runtime Bug on 32-bit Embedded Systems
TL;DR
A Go application on a 32-bit embedded Linux system was crashing due to a bug in the Go runtime's netpoll mechanism. The issue was identified and resolved, improving application stability.
✦ Why It Matters
Investigate runtime errors in your applications to ensure stability, especially on embedded systems.
Key Takeaways
- Investigate pointer handling in your Go applications.
- Test long-running applications on 32-bit systems.
- Consider using tagged pointers to avoid aliasing.
- Stay updated on Go runtime issues and fixes.
How It Works
The Go runtime uses a data structure to manage event file descriptors, which can store both raw pointers and tagged pointers. On 32-bit systems, the way these pointers are packed can lead to aliasing, causing incorrect event handling when certain conditions are met.
The fix proposed involves using a tagged nil pointer for event file descriptors, which prevents this aliasing and ensures accurate event identification.