From f7c2d2d7ebf9a110cafbe53199457c318f61a192 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Wed, 17 May 2017 22:54:11 -0400
Subject: [PATCH] ipv6: Check ip6_find_1stfragopt() return value properly.

commit 7dd7eb9513bd02184d45f000ab69d78cb1fa1531 upstream.

Do not use unsigned variables to see if it returns a negative
error or not.

Fixes: 2423496af35d ("ipv6: Prevent overrun when parsing v6 header options")
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.2: adjust filenames, context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
Reading git-format-patch failed