From 07e89ad7408717f74e180903e286e60b5a6e01c8 Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Thu, 6 Apr 2017 00:07:11 +0000
Subject: [PATCH] makefs: zero memory

NetBSD revs:
ffs/buf.c	1.14

Obtained from:	NetBSD
---
 usr.sbin/makefs/ffs/buf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/usr.sbin/makefs/ffs/buf.c b/usr.sbin/makefs/ffs/buf.c
index 5d783e7e25b..35c8d7bfe60 100644
--- a/usr.sbin/makefs/ffs/buf.c
+++ b/usr.sbin/makefs/ffs/buf.c
@@ -45,6 +45,7 @@ __FBSDID("$FreeBSD$");
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <unistd.h>
 
 #include "makefs.h"
@@ -219,6 +220,7 @@ getblk(struct vnode *vp, daddr_t blkno, int size, int u1 __unused,
 		n = realloc(bp->b_data, size);
 		if (n == NULL)
 			err(1, "getblk: realloc b_data %ld", bp->b_bcount);
+		memset(n, 0, size);
 		bp->b_data = n;
 		bp->b_bufsize = size;
 	}