static void bump_cpu_timer(struct k_itimer *timer, u64 now)
{
	int i;
	u64 delta, incr;

	if (timer->it.cpu.incr == 0)
		return;

	if (now < timer->it.cpu.expires)
		return;

	incr = timer->it.cpu.incr;
	delta = now + incr - timer->it.cpu.expires;

	/* Don't use (incr*2 < delta), incr*2 might overflow. */
	for (i = 0; incr < delta - incr; i++)
		incr = incr << 1;

	for (; i >= 0; incr >>= 1, i--) {
		if (delta < incr)
			continue;

		timer->it.cpu.expires += incr;
		timer->it_overrun += 1LL << i;
		delta -= incr;
	}
}
The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.