Public bug reported:

It was noticed that during the kdump kernel initialization, hpet is
getting interrupts lost, like the following message inform:

[2.816266] hpet1: lost 35 rtc interrupts

Started a bisect, the behavior is present on kernel versions v4.5 and
subsequent.

** Affects: linux (Ubuntu)
     Importance: Medium
     Assignee: Guilherme G. Piccoli (gpiccoli)
         Status: Confirmed

** Description changed:

  It was noticed that during the kdump kernel initialization, hpet is
  getting interrupts lost, like the following message inform:
  
- 2.816266] hpet1: lost 35 rtc interrupts
+ [2.816266] hpet1: lost 35 rtc interrupts
  
  Started a bisect, the behavior is present on kernel versions v4.5 and
  subsequent.

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https://bugs.launchpad.net/bugs/1857922

Title:
  hpet lost interrupts on kdump

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