D30069.diff
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	diff --git a/sys/kern/kern_event.c b/sys/kern/kern_event.c
	--- a/sys/kern/kern_event.c
	+++ b/sys/kern/kern_event.c
	@@ -718,6 +718,7 @@
	{
	struct kq_timer_cb_data *kc;
	struct proc *p;
	+ uint64_t delta;
	sbintime_t now;

	kc = kn->kn_ptr.p_v;
	@@ -728,9 +729,17 @@
	return;
	}

	- for (now = sbinuptime(); kc->next <= now; kc->next += kc->to)
	- kn->kn_data++;
	- KNOTE_ACTIVATE(kn, 0); /* XXX - handle locking */
	+ now = sbinuptime();
	+ if (now >= kc->next) {
	+ delta = (now - kc->next) / kc->to;
	+ if (delta == 0)
	+ delta = 1;
	+ kn->kn_data += delta;
	+ kc->next += (delta + 1) * kc->to;
	+ if (now >= kc->next) /* overflow */
	+ kc->next = now + kc->to;
	+ KNOTE_ACTIVATE(kn, 0); /* XXX - handle locking */
	+ }

	/*
	* Initial check for stopped kc->p is racy. It is fine to