From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Sat, 11 Jun 2016 18:32:06 +0000 (+0200)
Subject: ipv6: fix endianness error in icmpv6_err
X-Git-Tag: firefly_0821_release~176^2~331
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a270309c905338503f94a104178a3175f75f57c6;p=firefly-linux-kernel-4.4.55.git

ipv6: fix endianness error in icmpv6_err

IPv6 ping socket error handler doesn't correctly convert the new 32 bit
mtu to host endianness before using.

[Cherry-pick of net dcb94b88c09ce82a80e188d49bcffdc83ba215a6]

Bug: 29370996
Change-Id: Iea0ca79f16c2a1366d82b3b0a3097093d18da8b7
Cc: Lorenzo Colitti <lorenzo@google.com>
Fixes: 6d0bfe22611602f ("net: ipv6: Add IPv6 support to the ping socket.")
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Acked-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index a3ec7a77a1ee..41e5c9520c7d 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -98,7 +98,7 @@ static void icmpv6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
 	if (!(type & ICMPV6_INFOMSG_MASK))
 		if (icmp6->icmp6_type == ICMPV6_ECHO_REQUEST)
-			ping_err(skb, offset, info);
+			ping_err(skb, offset, ntohl(info));
 }
 
 static int icmpv6_rcv(struct sk_buff *skb);