On Wed, Apr 20, 2016 at 12:38:11PM +0200, Daniel Borkmann wrote: > Hmm, your fail.c test case only contains '#include <net/ipv6.h>'?
No, only when building oot modules (virtualbox, and I found batman-adv having the same issue), so I reduced it to the most simple test case. This actually builds a fail.ko on 4.4.7 with CONFIG_NET_CLS_ACT=y without errors. > Note, upstream kernel never cared about out-of-tree modules, only > in-tree code. ;) Did you run into an issue with any in-tree code? A current fix for oot modules would be to add: #include <uapi/linux/pkt_cls.h> in front of that include for kernel >= 4.5… Ingo -- Kennedy's Lemma: If you can parse Perl, you can solve the Halting Problem. http://www.perlmonks.org/?node_id=663393