Re: [PATCH] kernel/watchdog: fix spurious hard lockups

From: Prarit Bhargava
Date: Tue Jun 20 2017 - 18:34:31 EST

On 06/20/2017 05:33 PM, kan.liang@xxxxxxxxx wrote:
> From: Kan Liang <Kan.liang@xxxxxxxxx>
> Some users reported spurious NMI watchdog timeouts.
> We now have more and more systems where the Turbo range is wide enough
> that the NMI watchdog expires faster than the soft watchdog timer that
> updates the interrupt tick the NMI watchdog relies on.

Hmm ... odd that I haven't seen this. We're running a pretty wide
variety of systems here. Do you have a reproducer? I'd like to see
this occur on production HW.