Apr 30, 2026 · Information Security

Understanding the BPF Loader and Its Signature Schemes

This article provides an in‑depth technical walkthrough of the eBPF loader implementation, explains two signature schemes, details map creation, hash calculation, CO‑RE relocation handling, the use_loader mode, kernel‑side verification via Hornet LSM, and discusses the advantages, limitations, and TOCTOU concerns.

BPF loaderCO-REHornet LSM

0 likes · 31 min read

Understanding the BPF Loader and Its Signature Schemes

BirdNest Tech Talk

Sep 12, 2024 · Operations

Build Your First eBPF Hello World: From Compilation to Tracepoint Debugging

This tutorial walks through installing the required toolchain, writing a minimal eBPF program, compiling it with eunomia‑bpf or cilium/ebpf, loading it from user space, attaching it to a tracepoint, and observing kernel‑level output, while explaining each step and the underlying concepts.

CO-REHello Worldcilium/ebpf

0 likes · 23 min read

Build Your First eBPF Hello World: From Compilation to Tracepoint Debugging

BirdNest Tech Talk

Sep 12, 2024 · Fundamentals

Mastering eBPF with CO-RE: From Basics to Go Implementation

This article introduces eBPF fundamentals, explains the Compile‑Once‑Run‑Everywhere (CO‑RE) approach, compares it with traditional eBPF, outlines best practices, and walks through a complete Go‑based example using the Cilium/eBPF library and the eunomia‑bpf runtime.

CO-RECiliumGo

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Mastering eBPF with CO-RE: From Basics to Go Implementation