From: David S. Miller <davem@davemloft.net>
Date: Mon, 2 Apr 2012 00:15:14 +0000 (-0400)
Subject: decnet: Stop using NLA_PUT*().
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b21dddb9dfe50ca1e205faf4b25900895494d25b;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

decnet: 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>
---

diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 74d321a60e7b..16efcda2f060 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -695,13 +695,13 @@ static int dn_nl_fill_ifaddr(struct sk_buff *skb, struct dn_ifaddr *ifa,
 	ifm->ifa_scope = ifa->ifa_scope;
 	ifm->ifa_index = ifa->ifa_dev->dev->ifindex;
 
-	if (ifa->ifa_address)
-		NLA_PUT_LE16(skb, IFA_ADDRESS, ifa->ifa_address);
-	if (ifa->ifa_local)
-		NLA_PUT_LE16(skb, IFA_LOCAL, ifa->ifa_local);
-	if (ifa->ifa_label[0])
-		NLA_PUT_STRING(skb, IFA_LABEL, ifa->ifa_label);
-
+	if ((ifa->ifa_address &&
+	     nla_put_le16(skb, IFA_ADDRESS, ifa->ifa_address)) ||
+	    (ifa->ifa_local &&
+	     nla_put_le16(skb, IFA_LOCAL, ifa->ifa_local)) ||
+	    (ifa->ifa_label[0] &&
+	     nla_put_string(skb, IFA_LABEL, ifa->ifa_label)))
+		goto nla_put_failure;
 	return nlmsg_end(skb, nlh);
 
 nla_put_failure:
diff --git a/net/decnet/dn_rules.c b/net/decnet/dn_rules.c
index f65c9ddaee41..7399e3d51922 100644
--- a/net/decnet/dn_rules.c
+++ b/net/decnet/dn_rules.c
@@ -204,11 +204,11 @@ static int dn_fib_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
 	frh->src_len = r->src_len;
 	frh->tos = 0;
 
-	if (r->dst_len)
-		NLA_PUT_LE16(skb, FRA_DST, r->dst);
-	if (r->src_len)
-		NLA_PUT_LE16(skb, FRA_SRC, r->src);
-
+	if ((r->dst_len &&
+	     nla_put_le16(skb, FRA_DST, r->dst)) ||
+	    (r->src_len &&
+	     nla_put_le16(skb, FRA_SRC, r->src)))
+		goto nla_put_failure;
 	return 0;
 
 nla_put_failure: