Developers debugged a Go runtime crash on 32-bit ARM embedded Linux systems caused by the netpoll mechanism receiving unexpected EPOLLIN|EPOLLOUT events instead of only EPOLLIN. The issue was traced to an internal assumption in Go's netpoll code that doesn't hold on certain 32-bit architectures, matching a known issue in the Go project tracker.
Background
Go's netpoll is the runtime's event notification mechanism built on epoll/kqueue that handles I/O multiplexing for goroutines. This bug affects Go applications running on resource-constrained 32-bit ARM embedded platforms.
- Source
- Lobsters
- Published
- Aug 25, 2026 at 08:26 PM
- Score
- 7.0 / 10