Merge branch 'master' of git://blackhole.kfki.hu/nf

Jozsef Kadlecsik says:

====================
Please apply the next patch against the nf tree:

- Deniz Eren reported that parallel flush/dump of list:set type of sets
  can lead to kernel crash. The bug was due to non-RCU compatible
  flushing, listing in the set type, fixed by me.

- Julia Lawall pointed out that IPSET_ATTR_ETHER netlink attribute
  length was not checked explicitly. The patch adds the missing
  checkings.
====================

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>