OSS + ELC EU 2026

One goal of containers is to provide an illusion: that a group of
processes are in a world of their own, and that there are no other processes on the system. In this session1, we'll look at the nature of that illusion and–through a series of experiments and live demonstrations–examine the various Linux mechanisms–namespaces, capabilities, cgroups (control groups), and seccomp–are used to support the creation of that illusion. (Bring a laptop with a recent Linux distro installed!)

When starting with Linux kernel development, beginners quickly encounter a frustrating roadblock: system crashes that produce absolutely no output, neither on the screen nor in the logs. Fortunately, Linux provides a rich toolbox designed to extract debug information even in the most desperate situations. The main challenge is knowing which tool fits a specific scenario and what data to expect.

In this talk, Richard shares practical guidance on the debugging mechanisms he has relied on over his past decade of working inside the Linux kernel. Attendees will learn how to break through the silence by deploying the right tool for the right type of crash. Besides well known mechanisms such as earlyprintk, pstore, and ftrace, Richard will reveal lesser known Linux debugging gems used to capture logs from freezing systems, trace internal behavior, and retrieve postmortem panic data.

By the end of the talk, beginners will have a clear and actionable roadmap for diagnosing actual kernel issues, ensuring they know exactly what to do the next time the kernel suddenly goes quiet.

Talking points:

• Copyright law as a (wrong) playing field for open source software
• Working with what we have – the curious case of modifications
• Modification of software – what does this mean practically (e.g., bug fix, alteration of existing code, new code)
• Derivative work and modification in FOSS licensing
• Practical cases and “risks”
o Products
o M&As


Abstract:
There are many legal concepts that create havoc in the open source world, but only a few are as “scary” as the concept of modification and derivative work. Copyright law concept are challenging to adopt in the software context. The ambiguity of the legislation as well as the case law in many jurisdictions, such as the US and many EU countries and institutes, is proof enough that this is a convoluted topic, and not just in theory. The practical impact of derivative works and modifications runs through the entirety of the open source compliance process. In this session, we will attempt to demystify the aforementioned concepts and possibly open up more questions for discussion.

You can rebuild your infrastructure from a git repo and migrate workloads across clouds. Your backup data is locked in a proprietary format, on vendor hardware, encrypted with keys you don't fully control. This talk applies the open-source portability argument to resilience, and examines what genuine backup ownership actually requires: open formats, storage-backend independence, and key custody that stays with the data owner.

This talk will focus on a day in the life of CVE remediators. It will go through the full process of identifying, resolving, upstreaming and following up CVEs in various dependencies. It will also go through the various Open Source tools that we use throughout the full process, touch on our experiences working upstream and go through how we are sharing this knowledge and experience internally.

Linux now stands as the most widely used operating system for production and development environments, as it provides a lot of services (daemons) and tools for debugging.

One core part are the log files which is widely used. You can use built-in commands such as less, grep, awk/sed or tail for log analysis, but there are times when you need some more advanced commands or tools that can help to investigate large log files efficiently.

In this talk, you will learn five practical tips to view your log files for analysis. You will learn about Open Source tools that can make your job easier for your daily tasks.

Join us to learn more about Linux, log analysis, aggregation tools, and the value of Open Source Community.