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authorDavid S. Miller <davem@davemloft.net>2016-04-20 15:32:54 -0400
committerDavid S. Miller <davem@davemloft.net>2016-04-20 15:32:54 -0400
commite6f268ef3687862b0e9f01f7b3706b54f75b82ab (patch)
tree6884a1cc212054143742fd2efbd16a86bac9ff92 /include/net/netlink.h
parentcca1d81574d266d4a3aa33f3947297564525e127 (diff)
net: nla_align_64bit() needs to test the right pointer.
Netlink messages are appended, one object at a time, to the end of the SKB. Therefore we need to test skb_tail_pointer() not skb->data for alignment. Fixes: 35c5845957c7 ("net: Add helpers for 64-bit aligning netlink attributes.") Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/netlink.h')
-rw-r--r--include/net/netlink.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/netlink.h b/include/net/netlink.h
index cf95df1fa14b..3c1fd92a52c8 100644
--- a/include/net/netlink.h
+++ b/include/net/netlink.h
@@ -1250,7 +1250,7 @@ static inline int nla_align_64bit(struct sk_buff *skb, int padattr)
* nlattr header for next attribute, will make nla_data()
* 8-byte aligned.
*/
- if (IS_ALIGNED((unsigned long)skb->data, 8) &&
+ if (IS_ALIGNED((unsigned long)skb_tail_pointer(skb), 8) &&
!nla_reserve(skb, padattr, 0))
return -EMSGSIZE;
#endif