static ssize_t host_features_show(struct device *dev,
				 struct device_attribute *attr, char *buf)
{
	struct vbg_dev *gdev = dev_get_drvdata(dev);

	return sprintf(buf, "%#x\n", gdev->host_features);
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.