PTRACE_EVENT_VFORK_DONE kills me. I spent the whole weekend, but still need more debugging/fixes.
The changelog includes the test-case I wrote and says it works. But! if I run the several instances in parallel, then after 3-5 minutes it fails: TRACEVFORKDONE is not reported. And of course, if I add printk's the problem goes away. Still investigating. Oleg.
