--- linux-2.4.20.lsm-old/init/do_mounts.c	2002-12-13 19:33:23.000000000 +0100
+++ linux-2.4.20.lsm/init/do_mounts.c	2002-12-13 19:36:48.000000000 +0100
@@ -812,6 +812,8 @@
 	/* switch root and cwd back to / of rootfs */
 	sys_fchdir(root_fd);
 	sys_chroot(".");
+	close(old_fd);
+	close(root_fd);
 	sys_umount("/old/dev", 0);
 
 	if (real_root_dev == ram0) {