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This guide demonstrates how frontend developers can use Chrome DevTools to override API responses and headers locally. It covers fixing incorrect data, validating UI scenarios, and resolving CORS errors by manipulating network requests and their properties, enabling continuous development despite backend dependencies.
This article details the journey of debugging mysterious system freezes caused by eBPF programs in the Linux kernel. We uncovered an issue where an NMI-driven eBPF sampling program would self-deadlock by attempting to acquire a spinlock already held by another eBPF program on the same CPU, leading to 250ms kernel timeouts. The analysis highlights the complexities of spinlocks, NMIs, and cache coherence in kernel development.
