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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.
Linux has made incredible strides, becoming more user-friendly and powerful than ever before. Enthusiasts often anticipate the "year of the Linux desktop," hoping it will finally break into the mainstream. While
Quick Verdict For any Linux user running a systemd-based distribution, systemd-analyze is an indispensable, built-in tool that effortlessly uncovers the culprits behind sluggish boot times. It's incredibly easy to use,
Windows 11 is rapidly gaining market share, nearing 75% adoption, largely driven by new hardware and the end of Windows 10 support. Despite its growing presence, users face persistent buggy updates, feel a loss of control due to Microsoft's limitations, and some are even moving to macOS or Linux.
If you've spent any time using Linux on your desktop, you're likely familiar with the cycle: a small tweak here, a slightly larger one there, confident updates, a reboot, and then… a blank stare. Many Linux users
