--- inode_ops.c~	2005-10-06 21:54:52.000000000 +0400
+++ inode_ops.c	2005-12-15 21:56:55.927839866 +0300
@@ -90,6 +90,8 @@
 
 	memset(&data, 0, sizeof data);
 	data.mode = S_IFREG | mode;
+	if (!inode_regular_plugin(parent))
+		return -EINVAL;
 	data.id = inode_regular_plugin(parent)->id;
 	return invoke_create_method(parent, dentry, &data);
 }