megasas_fw_crash_state_show(struct device *cdev,
	struct device_attribute *attr, char *buf)
{
	struct Scsi_Host *shost = class_to_shost(cdev);
	struct megasas_instance *instance =
		(struct megasas_instance *) shost->hostdata;

	return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
}

The product dereferences a pointer that it expects to be valid but is NULL.