Re: [PATCH 1/2] netfilter: kill nf_send_reset6() from include/net/netfilter/ipv6/nf_reject.h

[Florian Westphal <fw@strlen.de>]

Josh Boyer <jwboyer@fedoraproject.org> wrote:
> On Thu, Oct 9, 2014 at 2:27 PM, Pablo Neira Ayuso <pablo@netfilter.org> wrote:
> > nf_send_reset6() now resides in net/ipv6/netfilter/nf_reject_ipv6.c
> >
> > Fixes: c8d7b98 ("netfilter: move nf_send_resetX() code to nf_reject_ipvX modules")
> > Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
> > Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
> > Acked-by: Eric Dumazet <edumazet@google.com>
> > ---
> >  include/net/netfilter/ipv6/nf_reject.h |  157 +-------------------------------
> >  1 file changed, 2 insertions(+), 155 deletions(-)
> 
> Hi All,
> 
> This morning I was testing a kernel build from Linus' tree as of Linux
> v3.17-7639-g90eac7eee2f4.  When I rebooted my test machines, I
> couldn't ssh back into any of them.  I poked around a bit and noticed
> that it seems the iptables rules weren't getting loaded properly.
> Traffic out worked fine, and I could ping the machine, but other
> incoming traffic was blocked.  Then I saw that the ip6t_REJECT and
> ip6t_rpfilter modules were not being loaded on the bad kernel.
> Looking in dmesg I see:
> 
> [   14.619028] nf_reject_ipv6: module license 'unspecified' taints kernel.
> [   14.619125] nf_reject_ipv6: Unknown symbol ip6_local_out (err 0)

Ouch. ip6_local_is EXPORT_SYMBOL_GPL.

http://patchwork.ozlabs.org/patch/398501/

should fix this.