if !ok {
		return curCtx, false, fmt.Errorf("event %s for goroutine (%v) that doesn't exist", go122.EventString(ev.typ), curCtx.G)
	}
	if state.status != go122.GoSyscall {
		return curCtx, false, fmt.Errorf("%s event for goroutine that's not %v", go122.EventString(ev.typ), GoSyscall)
	}
	// This goroutine is exiting itself.
	delete(o.gStates, curCtx.G)
	newCtx := curCtx
	newCtx.G = NoGoroutine