From b2bf33265e1456d2f9615e21a60329fa3189d15a Mon Sep 17 00:00:00 2001
From: Jan Engelhardt <jengelh@medozas.de>
Date: Tue, 16 Mar 2010 21:44:44 +0100
Subject: [PATCH] --- yaml --- r: 194907 b: refs/heads/master c:
 e5042a290097b7c2fc9b6a247585b6ed07b13026 h: refs/heads/master i:   194905:
 124bbbffa6b21f1b8d94c56aef9349334985d0cc   194903:
 baf17df6dfc45476dea4ebd8cf7dad5708b79ec8 v: v3

---
 [refs]                       | 2 +-
 trunk/net/netfilter/xt_mac.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index 6b40291838be..639e4e18cb7e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1d1c397db95f1c0cd95f6fa633c1e68acfaacec3
+refs/heads/master: e5042a290097b7c2fc9b6a247585b6ed07b13026
diff --git a/trunk/net/netfilter/xt_mac.c b/trunk/net/netfilter/xt_mac.c
index 2039d0741b37..b971ce93773e 100644
--- a/trunk/net/netfilter/xt_mac.c
+++ b/trunk/net/netfilter/xt_mac.c
@@ -10,6 +10,7 @@
 
 #include <linux/module.h>
 #include <linux/skbuff.h>
+#include <linux/if_arp.h>
 #include <linux/if_ether.h>
 #include <linux/etherdevice.h>
 
@@ -29,6 +30,8 @@ static bool mac_mt(const struct sk_buff *skb, const struct xt_match_param *par)
 	const struct xt_mac_info *info = par->matchinfo;
 	bool ret;
 
+	if (skb->dev == NULL || skb->dev->type != ARPHRD_ETHER)
+		return false;
 	if (skb_mac_header(skb) < skb->head)
 		return false;
 	if (skb_mac_header(skb) + ETH_HLEN > skb->data)