author: Florent Revest <revest@chromium.org> 2023-07-03 16:52:16 +0200
committer: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2023-07-19 16:37:02 +0200
commit: fce5cc7cbd4b92f979bf02c9ec5fb69aaeba92d7
parent: 14c6b21717f05e39aa2412a26762c1439e05e9cd
Commit Summary:
Diffstat:
1 file changed, 4 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 0c4db2f2ac43..f22691f83853 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -360,6 +360,9 @@ int nf_conntrack_helper_register(struct nf_conntrack_helper *me)
BUG_ON(me->expect_class_max >= NF_CT_MAX_EXPECT_CLASSES);
BUG_ON(strlen(me->name) > NF_CT_HELPER_NAME_LEN - 1);
+ if (!nf_ct_helper_hash)
+ return -ENOENT;
+
if (me->expect_policy->max_expected > NF_CT_EXPECT_MAX_CNT)
return -EINVAL;
@@ -515,4 +518,5 @@ int nf_conntrack_helper_init(void)
void nf_conntrack_helper_fini(void)
{
kvfree(nf_ct_helper_hash);
+ nf_ct_helper_hash = NULL;
}