[PATCH net-next 1/4] netlink: fix test alignment in nla_align_64bit()

[Nicolas Dichtel]

IS_ALIGN() returns true when the alignment is as expected. The pad
attribute should be added only when the alignment is not 8.

Fixes: 35c5845957c7 ("net: Add helpers for 64-bit aligning netlink attributes.")
Signed-off-by: Nicolas Dichtel <nicolas.dich...@6wind.com>
---
 include/net/netlink.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/net/netlink.h b/include/net/netlink.h
index e644b3489acf..694caac31d2c 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -1245,7 +1245,7 @@ static inline int nla_validate_nested(const struct nlattr 
*start, int maxtype,
 static inline int nla_align_64bit(struct sk_buff *skb, int padattr)
 {
 #ifndef HAVE_EFFICIENT_UNALIGNED_ACCESS
-       if (IS_ALIGNED((unsigned long)skb->data, 8)) {
+       if (!IS_ALIGNED((unsigned long)skb->data, 8)) {
                struct nlattr *attr = nla_reserve(skb, padattr, 0);
                if (!attr)
                        return -EMSGSIZE;
-- 
2.4.2