#Define

A deep dive into converting a simple arithmetic expression into a binary tree, leading to a custom language in C.

History of how I made portable my transputer C compiler to work in modern platforms.

A few words and thoughts about the upcoming support for quite a few Sierra cameras (Sanyo VPC-G1, Epson PhotoPC, ...) on Quicktake for Apple II.

My brother and I spent a lot of time designing our eBPF security agent to be really fast from the ground up, but recently we discovered we could make it much faster using memoization!…

Many security bugs are race conditions, where multi-threaded execution has to occur with the righ...

We have published Qubes Security Bulletin (QSB) 118: Dom0 arbitrary code execution in qvm-copy-to-vm error reporting. The text of this QSB and its accompanying cryptographic signatures are reproduced below, followed by a general explanation of this…

HN comments are terrible. On any topic I’m informed about, the vast majority of comments are pretty clearly wrong. Most of the time, there are zero comments from people who know anything about the topic and the top comment is reasonable sounding but…

Something I must confess is that I absolutely hate writing these blog posts. It’s not quite as bad as having to give a conference talk, but it’s up there on the list of activities that feel like pulling teeth to me. Not that I’m not proud of the result.…

A very very very very very very very long interrupt - xoreaxeaxeax/smiiiiiiiiiiiiiiii

The real, physical Cornell box. From Modeling the Interaction of Light Between Diffuse Surfaces, by Goral et al 1984

I spent a whole month researching FreeBSD's kernel's virtual memory system to understand why tools like htop, btop and fastfetch report different information about RAM usage. I ended up submitting patches to all of these projects.

Tracing one vector-add kernel from nvcc all the way down to the warps that execute it.

Why does this matter? As Steve Yegge said, "If you don't know how compilers work, then you don't know how computers work." Yegge describes 8 problems that can be solved with compilers (or equally well with interpreters, or with Yegge's typical heavy…

First, I want to tell you how exactly I got to this point and why I started researching different options for handling asynchronous I/O on Linux… Last year, my students and I built a reverse proxy server called TinyGate.…

A walkthrough of the rewritten AF_UNIX garbage collector, the CVE-2025-40214 scc_index uninitialised-field bug, and two reproducers.

How I developed a Klondike Solitaire game for curses in C language as an entry for the IOCCC.