From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Wed, 14 Apr 2021 10:17:22 +0000 (+0200)
Subject: ntp: don't update source status with unsynchronized data
X-Git-Tag: 4.1-pre1~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=81f7f6ddf08011d3b3f7bd02662e76dfa7855d78;p=thirdparty%2Fchrony.git

ntp: don't update source status with unsynchronized data

Don't update the leap and stratum used in source selection if they
indicate an unsynchronized source.

Fixes: 2582be8754ab ("sources: separate update of leap status")
---

diff --git a/ntp_core.c b/ntp_core.c
index 68176ec0..37423329 100644
--- a/ntp_core.c
+++ b/ntp_core.c
@@ -1766,7 +1766,8 @@ process_response(NCR_Instance inst, NTP_Local_Address *local_addr,
     inst->tx_count = 0;
 
     SRC_UpdateReachability(inst->source, synced_packet);
-    SRC_UpdateStatus(inst->source, MAX(message->stratum, inst->min_stratum), pkt_leap);
+    if (synced_packet)
+      SRC_UpdateStatus(inst->source, MAX(message->stratum, inst->min_stratum), pkt_leap);
 
     if (good_packet) {
       /* Adjust the polling interval, accumulate the sample, etc. */