BPF is a powerful component in the Linux kernel and the tools that make use of it are vastly varied and numerous. In this article we examine the general usefulness of BPF and guide you on a path ...

Back in early November 2001, I started following a discussionbetween two factions of the Linux kernel community. The gist of thediscussion was over what was the best solution to the Linux ...

In the last issue we started following a packet's journey from the wire up to the higher levels of network stack processing. We left the packet at the end of layer 3 processing, where IP has ...

A recent Linux security hole allows local users to seize the power of root. We show the Linux bugs that came together to let it happen. Once all this has happened, control returns to vmsplice_to_pipe( ...

Much of modern operating system functionality happens in and around the kernel. That’s a problem when you’re implementing monitoring and observability tools or adding low-level security tools because ...