systemd/SOURCES/0293-core-timer-Always-use-inactive_exit_timestamp-if-it-.patch

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2023-11-07 11:29:40 +00:00
From 87e554ca8567647afef3ba79f75bc98d67716fdb Mon Sep 17 00:00:00 2001
From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Tue, 23 May 2023 16:24:47 +0200
Subject: [PATCH] core/timer: Always use inactive_exit_timestamp if it is set
If we're doing a daemon-reload, we'll be going from TIMER_DEAD => TIMER_WAITING,
so we won't use inactive_exit_timestamp because TIMER_DEAD != UNIT_ACTIVE, even
though inactive_exit_timestamp is serialized/deserialized and will be valid after
the daemon-reload.
This issue can lead to timers never firing as we'll always calculate the next
elapse based on the current realtime on daemon-reload, so if daemon-reload happens
often enough, the elapse interval will be moved into the future every time, which
means the timer will never trigger.
To fix the issue, let's always use inactive_exit_timestamp if it is set, and only
fall back to the current realtime if it is not set.
(cherry picked from commit 6546045fa0bf84737bd8b2e1e8bf7dd3941d8352)
Resolves: #2211065
---
src/core/timer.c | 10 ++++------
1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/src/core/timer.c b/src/core/timer.c
index b6810c8599..711500313d 100644
--- a/src/core/timer.c
+++ b/src/core/timer.c
@@ -401,12 +401,10 @@ static void timer_enter_waiting(Timer *t, bool time_change) {
if (t->last_trigger.realtime > 0)
b = t->last_trigger.realtime;
- else {
- if (state_translation_table[t->state] == UNIT_ACTIVE)
- b = UNIT(t)->inactive_exit_timestamp.realtime;
- else
- b = ts.realtime;
- }
+ else if (dual_timestamp_is_set(&UNIT(t)->inactive_exit_timestamp))
+ b = UNIT(t)->inactive_exit_timestamp.realtime;
+ else
+ b = ts.realtime;
r = calendar_spec_next_usec(v->calendar_spec, b, &v->next_elapse);
if (r < 0)