From 74005991b78a0a7a6546004fb37d33a651c613e7 Mon Sep 17 00:00:00 2001 From: Fan Du Date: Tue, 27 Jan 2015 17:00:29 +0800 Subject: [PATCH] xfrm: Do not parse 32bits compiled xfrm netlink msg on 64bits host 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 Signed-off-by: Steffen Klassert --- net/xfrm/xfrm_user.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 7de2ed9ec46d..2091664295ba 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; -- 2.20.1