netfilter: xt_AUDIT: only generate audit log when audit enabled

We should stop generting audit log if audit is disabled.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/netfilter/xt_AUDIT.c b/net/netfilter/xt_AUDIT.c
index ba92824086f3..3228d7f24eb4 100644
--- a/net/netfilter/xt_AUDIT.c
+++ b/net/netfilter/xt_AUDIT.c
@@ -124,6 +124,9 @@ audit_tg(struct sk_buff *skb, const struct xt_action_param *par)
         const struct xt_audit_info *info = par->targinfo;
         struct audit_buffer *ab;
 
+        if (audit_enabled == 0)
+                goto errout;
+
         ab = audit_log_start(NULL, GFP_ATOMIC, AUDIT_NETFILTER_PKT);
         if (ab == NULL)
                 goto errout;