netfilter: nf_ct_helper: Fix logging for dropped packets

Update nf_ct_helper_log to emit args along with the format.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 10 insertions, 1 deletions

diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
index 013cdf69fe29..bb4188f170e3 100644
--- a/net/netfilter/nf_conntrack_helper.c
+++ b/net/netfilter/nf_conntrack_helper.c
@@ -341,6 +341,13 @@ void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct,
 {
         const struct nf_conn_help *help;
         const struct nf_conntrack_helper *helper;
+        struct va_format vaf;
+        va_list args;
+
+        va_start(args, fmt);
+
+        vaf.fmt = fmt;
+        vaf.va = &args;
 
         /* Called from the helper function, this call never fails */
         help = nfct_help(ct);
@@ -349,7 +356,9 @@ void nf_ct_helper_log(struct sk_buff *skb, const struct nf_conn *ct,
         helper = rcu_dereference(help->helper);
 
         nf_log_packet(nf_ct_l3num(ct), 0, skb, NULL, NULL, NULL,
-                      "nf_ct_%s: dropping packet: %s ", helper->name, fmt);
+                      "nf_ct_%s: dropping packet: %pV ", helper->name, &vaf);
+
+        va_end(args);
 }
 EXPORT_SYMBOL_GPL(nf_ct_helper_log);