diff options
Diffstat (limited to 'net/netfilter/nf_conntrack_expect.c')
| -rw-r--r-- | net/netfilter/nf_conntrack_expect.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/netfilter/nf_conntrack_expect.c b/net/netfilter/nf_conntrack_expect.c index 117cbfdb910c..504fb6c083f9 100644 --- a/net/netfilter/nf_conntrack_expect.c +++ b/net/netfilter/nf_conntrack_expect.c @@ -337,6 +337,10 @@ int nf_conntrack_expect_related(struct nf_conntrack_expect *expect) NF_CT_ASSERT(master_help); write_lock_bh(&nf_conntrack_lock); + if (!master_help->helper) { + ret = -ESHUTDOWN; + goto out; + } list_for_each_entry(i, &nf_conntrack_expect_list, list) { if (expect_matches(i, expect)) { /* Refresh timer: if it's dying, ignore.. */ |