static inline int ipmi_thread_busy_wait(enum si_sm_result smi_result,
					const struct smi_info *smi_info,
					struct timespec64 *busy_until)
{
	unsigned int max_busy_us = 0;

	if (smi_info->si_num < num_max_busy_us)
		max_busy_us = kipmid_max_busy_us[smi_info->si_num];
	if (max_busy_us == 0 || smi_result != SI_SM_CALL_WITH_DELAY)
		ipmi_si_set_not_busy(busy_until);
	else if (!ipmi_si_is_busy(busy_until)) {
		ktime_get_ts64(busy_until);
		timespec64_add_ns(busy_until, max_busy_us*NSEC_PER_USEC);
	} else {
		struct timespec64 now;

		ktime_get_ts64(&now);
		if (unlikely(timespec64_compare(&now, busy_until) > 0)) {
			ipmi_si_set_not_busy(busy_until);
			return 0;
		}
	}
	return 1;
}

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.