ecryptfs_write_metadata_to_xattr(struct dentry *ecryptfs_dentry,
				 char *page_virt, size_t size)
{
	int rc;

	rc = ecryptfs_setxattr(ecryptfs_dentry, ECRYPTFS_XATTR_NAME, page_virt,
			       size, 0);
	return rc;
}

This weakness involves numeric computation errors, such as integer overflows, underflows, or precision losses, which can lead to miscalculations and exploitable behaviors in software.