Warning: If you do not care for the finer points of x86 architecture, please stop reading right now—in the interest of your own sanity. A while ago I was made aware of a strange problem causing a normal user process running on 32-bit i386 OpenBSD 6.3 to crash the OS (i386 only, not amd64). The problem turned out to be a security hole with history that goes back more than three decades. The crashin
