AUDIT: Drop user-generated messages immediately while auditing disabled.

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
diff --git a/kernel/audit.c b/kernel/audit.c
index f0bbfe0..ab6ac56 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -437,7 +437,7 @@
 		if (!tsk)
 			return -ESRCH;
 
-		if (audit_filter_user(tsk, msg_type)) {
+		if (audit_enabled && audit_filter_user(tsk, msg_type)) {
 			    ab = audit_log_start(NULL, msg_type);
 			    if (ab) {
 				    audit_log_format(ab,