diff mbox

xfrm: Do not parse 32bits compiled xfrm netlink msg on 64bits host

Message ID 1428575588-24962-2-git-send-email-steffen.klassert@secunet.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Steffen Klassert April 9, 2015, 10:33 a.m. UTC 
From: Fan Du <fan.du@intel.com>

structure like xfrm_usersa_info or xfrm_userpolicy_info
has different sizeof when compiled as 32bits and 64bits
due to not appending pack attribute in their definition.
This will result in broken SA and SP information when user
trying to configure them through netlink interface.

Inform user land about this situation instead of keeping
silent, the upper test scripts would behave accordingly.

Signed-off-by: Fan Du <fan.du@intel.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
---
 net/xfrm/xfrm_user.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox

Patch

diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c
index 7de2ed9..2091664 100644
--- a/net/xfrm/xfrm_user.c
+++ b/net/xfrm/xfrm_user.c
@@ -2423,6 +2423,11 @@  static int xfrm_user_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 	const struct xfrm_link *link;
 	int type, err;
 
+#ifdef CONFIG_COMPAT
+	if (is_compat_task())
+		return -ENOTSUPP;
+#endif
+
 	type = nlh->nlmsg_type;
 	if (type > XFRM_MSG_MAX)
 		return -EINVAL;