Ah so the idea is that there's already 8 KB of actual pages set for stack by this point. So when I try to get another (8 MB - 8 KB + 1 B), that blows things up?

Ah so the idea is that there's already 8 KB of actual pages set for stack by this point. So when I try to get another (8 MB - 8 KB + 1 B), that blows things up? I wonder if I can watch this happen in /proc/$pid/maps or somewhere else around there.