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Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in NMI

From Steven Rostedt <rostedt@goodmis.org>
Newsgroups linux.kernel
Subject Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in NMI
Date 2017-04-27 16:40 +0200
Message-ID <tASKm-1Rb-13@gated-at.bofh.it> (permalink)
References (4 earlier) <tyka5-XM-19@gated-at.bofh.it> <tyw1z-84u-3@gated-at.bofh.it> <tyFxT-5Ej-3@gated-at.bofh.it> <tzBLz-we-5@gated-at.bofh.it> <tAROh-1eg-7@gated-at.bofh.it>
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On Thu, 27 Apr 2017 15:38:19 +0200
Petr Mladek <pmladek@suse.com> wrote:

> > by the way,
> > does this `nmi_print_seq' bypass even fix anything for Steven?  
> 
> I think that this is the most important question.
> 
> Steven, does the patch from
> https://lkml.kernel.org/r/20170420131154.GL3452@pathway.suse.cz
> help you to see the debug messages, please?

You'll have to wait for a bit. The box that I was debugging takes 45
minutes to reboot. And I don't have much more time to play on it before
I have to give it back. I already found the bug I was looking for and
I'm trying not to crash it again (due to the huge bring up time).

When I get a chance, I'll see if I can insert a trigger to crash the
kernel from NMI on another box and see if this patch helps.

Thanks,

-- Steve

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Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Petr Mladek <pmladek@suse.com> - 2017-04-27 15:40 +0200
  Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Steven Rostedt <rostedt@goodmis.org> - 2017-04-27 16:40 +0200
    Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Petr Mladek <pmladek@suse.com> - 2017-04-27 17:30 +0200
      Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Steven Rostedt <rostedt@goodmis.org> - 2017-04-27 17:50 +0200
  Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Peter Zijlstra <peterz@infradead.org> - 2017-04-28 11:10 +0200
    Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Petr Mladek <pmladek@suse.com> - 2017-04-28 15:50 +0200
      Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Peter Zijlstra <peterz@infradead.org> - 2017-04-28 16:00 +0200
        Re: [PATCH v5 1/4] printk/nmi: generic solution for safe printk in  NMI Steven Rostedt <rostedt@goodmis.org> - 2017-04-28 16:50 +0200

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