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

From Prarit Bhargava <prarit@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH] kernel/watchdog: fix spurious hard lockups
Date 2017-06-21 00:40 +0200
Message-ID <tUzYu-65l-11@gated-at.bofh.it> (permalink)
References <tUz2p-5x0-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 06/20/2017 05:33 PM, kan.liang@intel.com wrote:
> From: Kan Liang <Kan.liang@intel.com>
> 
> 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.

P.

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[PATCH] kernel/watchdog: fix spurious hard lockups kan.liang@intel.com - 2017-06-20 23:40 +0200
  Re: [PATCH] kernel/watchdog: fix spurious hard lockups Andrew Morton <akpm@linux-foundation.org> - 2017-06-21 00:10 +0200
    RE: [PATCH] kernel/watchdog: fix spurious hard lockups "Liang, Kan" <kan.liang@intel.com> - 2017-06-21 14:50 +0200
      Re: [PATCH] kernel/watchdog: fix spurious hard lockups Don Zickus <dzickus@redhat.com> - 2017-06-21 15:50 +0200
        RE: [PATCH] kernel/watchdog: fix spurious hard lockups "Liang, Kan" <kan.liang@intel.com> - 2017-06-21 16:20 +0200
  Re: [PATCH] kernel/watchdog: fix spurious hard lockups Prarit Bhargava <prarit@redhat.com> - 2017-06-21 00:40 +0200
    Re: [PATCH] kernel/watchdog: fix spurious hard lockups Andi Kleen <ak@linux.intel.com> - 2017-06-21 01:10 +0200
      Re: [PATCH] kernel/watchdog: fix spurious hard lockups Prarit Bhargava <prarit@redhat.com> - 2017-06-21 02:20 +0200
        Re: [PATCH] kernel/watchdog: fix spurious hard lockups Marc Herbert <Marc.Herbert@intel.com> - 2017-06-21 23:10 +0200
  Re: [PATCH] kernel/watchdog: fix spurious hard lockups Don Zickus <dzickus@redhat.com> - 2017-06-21 15:50 +0200
    RE: [PATCH] kernel/watchdog: fix spurious hard lockups "Liang, Kan" <kan.liang@intel.com> - 2017-06-21 16:10 +0200
  Re: [PATCH] kernel/watchdog: fix spurious hard lockups Michal Hocko <mhocko@kernel.org> - 2017-06-28 13:50 +0200
    RE: [PATCH] kernel/watchdog: fix spurious hard lockups "Liang, Kan" <kan.liang@intel.com> - 2017-06-28 15:30 +0200
      RE: [PATCH] kernel/watchdog: fix spurious hard lockups "Liang, Kan" <kan.liang@intel.com> - 2017-06-28 16:40 +0200
      Re: [PATCH] kernel/watchdog: fix spurious hard lockups Michal Hocko <mhocko@kernel.org> - 2017-06-28 16:40 +0200

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