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 a3ec7a7..41e5c95 100644 (file)
--- 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);