[PATCH] fix broken timestamps in AVC generated by kernel threads

Timestamp in audit_context is valid only if ->in_syscall is set.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/kernel/audit.c b/kernel/audit.c
index d8646c2..ce6d8ea 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1121,9 +1121,7 @@
 static inline void audit_get_stamp(struct audit_context *ctx,
 				   struct timespec *t, unsigned int *serial)
 {
-	if (ctx)
-		auditsc_get_stamp(ctx, t, serial);
-	else {
+	if (!ctx || !auditsc_get_stamp(ctx, t, serial)) {
 		*t = CURRENT_TIME;
 		*serial = audit_serial();
 	}