[PATCH v4 13/18] x_tables: exit_net cleanup check added
From: Vasily Averin <hidden>
Date: 2017-11-12 08:47:49
Also in:
netfilter-devel
Subsystem:
netfilter, networking [general], the rest · Maintainers:
Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Be sure that xt.tables array initialized in net_init hook was return to initial state. Signed-off-by: Vasily Averin <redacted> --- net/netfilter/x_tables.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
index d8571f4..119b670 100644
--- a/net/netfilter/x_tables.c
+++ b/net/netfilter/x_tables.c@@ -1714,8 +1714,18 @@ static int __net_init xt_net_init(struct net *net) return 0; } +static void __net_exit xt_net_exit(struct net *net) +{ + int i; + + for (i = 0; i < NFPROTO_NUMPROTO; i++) + if (WARN_ON_ONCE(!list_empty(&net->xt.tables[i]))) + break; +} + static struct pernet_operations xt_net_ops = { .init = xt_net_init, + .exit = xt_net_exit, }; static int __init xt_init(void)
--
2.7.4