diff --git a/sys/kern/kern_sysctl.c b/sys/kern/kern_sysctl.c
--- a/sys/kern/kern_sysctl.c
+++ b/sys/kern/kern_sysctl.c
@@ -2856,7 +2856,7 @@
 db_show_sysctl_all(int *oid, size_t len, int flags)
 {
 	struct sysctl_oid *oidp;
-	int name1[CTL_MAXNAME + 2], name2[CTL_MAXNAME + 2];
+	int name1[CTL_MAXNAME + 2], name2[CTL_MAXNAME];
 	size_t l1, l2;
 
 	name1[0] = CTL_SYSCTL;