--- src/sys/kern/kern_prot.c	2004/05/09 11:51:10	1.18
+++ src/sys/kern/kern_prot.c	2005/01/14 02:25:08	1.19
@@ -930,6 +930,7 @@ crfree(struct ucred *cr)
 		if (cr->cr_prison && !--cr->cr_prison->pr_ref) {
 			if (cr->cr_prison->pr_linux != NULL)
 				FREE(cr->cr_prison->pr_linux, M_PRISON);
+			varsymset_clean(&cr->cr_prison->pr_varsymset);
 			FREE(cr->cr_prison, M_PRISON);
 		}
 		cr->cr_prison = NULL;	/* safety */