Ananth
34c60f113e
A calendar timer that is already waiting keeps the base timestamp it was last armed from. When the wall clock is set backwards, that base can end up in the future relative to the new realtime, and passing it to calendar_spec_next_usec() schedules the next elapse relative to the old future time instead of recalculating from now. systemctl list-timers then keeps showing the stale pre-adjustment elapse (e.g. "3 years left" after the clock moved back two years) and the timer never catches up. Clamp the selected calendar base to the current realtime before asking calendar_spec_next_usec() for the next occurrence. The clamp only kicks in when the base is genuinely in the future, so Persistent=yes timers whose last trigger is still in the past keep their catch-up behaviour and we don't reintroduce the missed-run regression seen after suspend. Fixes #6036.
System and Service Manager
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