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net_sched: fix a NULL pointer deref in ipt action

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The net pointer in struct xt_tgdtor_param is not explicitly
initialized therefore is still NULL when dereferencing it.
So we have to find a way to pass the correct net pointer to
ipt_destroy_target().

The best way I find is just saving the net pointer inside the per
netns struct tcf_idrinfo, which could make this patch smaller.

Fixes: 0c66dc1ea3 ("netfilter: conntrack: register hooks in netns when needed by ruleset")
Reported-and-tested-by: itugrok@yahoo.com
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Cong Wang
2019-08-25 10:01:32 -07:00
committed by David S. Miller
parent 9e8312f5e1
commit 981471bd3a
20 changed files with 27 additions and 24 deletions
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2
net/sched/act_mpls.c
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@@ -375,7 +375,7 @@ static __net_init int mpls_init_net(struct net *net)
{
struct tc_action_net *tn = net_generic(net, mpls_net_id);
return tc_action_net_init(tn, &act_mpls_ops);
return tc_action_net_init(net, tn, &act_mpls_ops);
}
static void __net_exit mpls_exit_net(struct list_head *net_list)