Hello, I'm currently trying to debug a problem with 4.7-rc1 and labeled networking over UDP. I'm having some difficulty with the latest 4.7-rc1 builds on my test system at the moment so I haven't been able to concisely identify the problem, but looking through the commits in 4.7-rc1 I think there may be a problem with the following:
commit e6afc8ace6dd5cef5e812f26c72579da8806f5ac Author: samanthakumar <samanthaku...@google.com> Date: Tue Apr 5 12:41:15 2016 -0400 udp: remove headers from UDP packets before queueing Remove UDP transport headers before queueing packets for reception. This change simplifies a follow-up patch to add MSG_PEEK support. Signed-off-by: Sam Kumar <samanthaku...@google.com> Signed-off-by: Willem de Bruijn <will...@google.com> Signed-off-by: David S. Miller <da...@davemloft.net> ... it appears that this commit changes things so that sk_filter() is only called when sk->sk_filter is not NULL. While this is fine for the traditional socket filter case, it causes problems with LSMs that make use of security_sock_rcv_skb() to enforce per-packet access controls. Hopefully I'll get 4.7-rc1 booting soon and I can do a proper bisection test around this patch, but I wanted to mention this now in case others are seeing the same problem. -- paul moore www.paul-moore.com
