From a41f213668308b0510a74948694535a51605180d Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 28 Sep 2022 10:55:24 +0200
Subject: [statistics] Prevent out-of-order event handling

---
 modules-available/statistics/api.inc.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules-available/statistics/api.inc.php b/modules-available/statistics/api.inc.php
index 88b27d86..6f4917b0 100644
--- a/modules-available/statistics/api.inc.php
+++ b/modules-available/statistics/api.inc.php
@@ -220,6 +220,10 @@ if ($type[0] === '~') {
 			'oldlastseen' => $old['lastseen'],
 			'oldstate' => $old['state'],
 		);
+		if ($NOW - $old['lastseen'] < 10 && ($old['state'] === 'OFFLINE' || $old['state'] === 'STANDBY')) {
+			// Avoid racing calls to ~runstate updates while/after we send a ~poweroff or ~suspend
+			die("OK.\n");
+		}
 		if ($old['state'] === 'OFFLINE') {
 			// This should never happen -- we expect a poweron event before runstate, which would set the state to IDLE
 			// So it might be that the poweron event got lost, or that a couple of runstate events got lost, which
-- 
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