Hunting Down a Go Runtime Bug on 32-Bit Embedded Systems
Software engineers detail the process of identifying and fixing a bug within the Go programming language runtime on 32-bit embedded Linux systems. The issue involved an unexpected event trigger in the netpoll mechanism that caused application crashes.
Why it matters
This provides technical insight into debugging complex software stacks, which is critical for developers working on reliable embedded systems.
embedded | 22.08.2026 Hunting Down a Go Runtime Bug on 32-bit Embedded Systems Our daily work usually revolves around Linux and security topics, deep down in the software stack. Still, more often than you might think, we end up debugging applications which live much higher up. Sometimes such a problem has its roots in the Linux kernel, sometimes elsewhere. In this blog post we show how we found and fixed a bug inside the Go runtime.
Recently a customer reported that an application written in Go crashes from time to time on one of their embedded Linux systems.
The crash was always the same fatal error with the following signature:
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