From 242ddfc01499e83cd1e65e1dddb8c96b7f2ba2cc Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Sun, 1 Apr 2012 18:52:03 -0400
Subject: [PATCH] nf_conntrack_proto_gre: Stop using NLA_PUT*().
These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.
Signed-off-by: David S. Miller <davem@davemloft.net>
---
net/netfilter/nf_conntrack_proto_gre.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/net/netfilter/nf_conntrack_proto_gre.c b/net/netfilter/nf_conntrack_proto_gre.c
index 659648c4b14a..4bf6b4e4b776 100644
--- a/net/netfilter/nf_conntrack_proto_gre.c
+++ b/net/netfilter/nf_conntrack_proto_gre.c
@@ -321,10 +321,11 @@ gre_timeout_obj_to_nlattr(struct sk_buff *skb, const void *data)
{
const unsigned int *timeouts = data;
- NLA_PUT_BE32(skb, CTA_TIMEOUT_GRE_UNREPLIED,
- htonl(timeouts[GRE_CT_UNREPLIED] / HZ));
- NLA_PUT_BE32(skb, CTA_TIMEOUT_GRE_REPLIED,
- htonl(timeouts[GRE_CT_REPLIED] / HZ));
+ if (nla_put_be32(skb, CTA_TIMEOUT_GRE_UNREPLIED,
+ htonl(timeouts[GRE_CT_UNREPLIED] / HZ)) ||
+ nla_put_be32(skb, CTA_TIMEOUT_GRE_REPLIED,
+ htonl(timeouts[GRE_CT_REPLIED] / HZ)))
+ goto nla_put_failure;
return 0;
nla_put_failure: