From: Xin Long <lucien....@gmail.com>
Date: Tue, 8 Aug 2017 15:25:25 +0800
> Now xt_tgchk_param par in ipt_init_target is a local varibale,
> par.net is not initialized there. Later when xt_check_target
> calls target's checkentry in which it may access par.net, it
> would cause kernel panic.
> Jaroslav found this panic when running:
> # ip link add TestIface type dummy
> # tc qd add dev TestIface ingress handle ffff:
> # tc filter add dev TestIface parent ffff: u32 match u32 0 0 \
> action xt -j CONNMARK --set-mark 4
> This patch is to pass net param into ipt_init_target and set
> par.net with it properly in there.
> As Wang Cong pointed, I missed ipt_net_id != xt_net_id, so fix
> it by also passing net_id to __tcf_ipt_init.
> Missed the fixes tag, so add it.
> Fixes: ecb2421b5ddf ("netfilter: add and use nf_ct_netns_get/put")
> Reported-by: Jaroslav Aster <jas...@redhat.com>
> Signed-off-by: Xin Long <lucien....@gmail.com>
Applied and queued up for -stable, thanks.