Prompted by some discussion elsewhere, I've been trying to send SIGKILL to init. If I ktrace kill(1), I can see "kill(1,9)" which returns 0 but the signal is never delivered. If I sent (eg) SIGXCPU then init dies and the kernel panics (as expected). I've looked through sys/kern/kern_* and can't see anywhere that special cases the delivery of SIGKILL to init.
Can anyone please explain why SIGKILL doesn't kill init (at least on -stable). -- Peter Jeremy
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