From aafdaa379ae3fb58acefa092b8edc3a64c929bb9 Mon Sep 17 00:00:00 2001
From: Alexander Drozdov <al.drozdov@gmail.com>
Date: Tue, 17 Feb 2015 13:33:46 +0300
Subject: [PATCH] ipv4: ip_check_defrag should correctly check return value of
 skb_copy_bits

commit fba04a9e0c869498889b6445fd06cbe7da9bb834 upstream.

skb_copy_bits() returns zero on success and negative value on error,
so it is needed to invert the condition in ip_check_defrag().

Fixes: 1bf3751ec90c ("ipv4: ip_check_defrag must not modify skb before unsharing")
Signed-off-by: Alexander Drozdov <al.drozdov@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Reading git-format-patch failed