audit: don't generate loginuid log when audit disabled

If audit is disabled, we shouldn't generate loginuid audit
log.

Acked-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: Eric Paris <eparis@redhat.com>

diff --git a/kernel/auditsc.c b/kernel/auditsc.c
index df1e685809e1363218c09ccf5b87191d6f1ef976..9ab02fa2334ce5b7975f03c772804b4c4eb5da1a 100644 (file)
--- a/kernel/auditsc.c
+++ b/kernel/auditsc.c
@@ -1971,6 +1971,9 @@ static void audit_log_set_loginuid(kuid_t koldloginuid, kuid_t kloginuid,
        struct audit_buffer *ab;
        uid_t uid, ologinuid, nloginuid;
 
+       if (!audit_enabled)
+               return;
+
        uid = from_kuid(&init_user_ns, task_uid(current));
        ologinuid = from_kuid(&init_user_ns, koldloginuid);
        nloginuid = from_kuid(&init_user_ns, kloginuid),