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Groups > linux.kernel > #1742624

Re: random insta-reboots on AMD Phenom II

From Borislav Petkov <bp@alien8.de>
Newsgroups linux.kernel
Subject Re: random insta-reboots on AMD Phenom II
Date 2017-09-30 14:00 +0200
Message-ID <uvoB5-3DX-7@gated-at.bofh.it> (permalink)
References <uvfo5-69K-3@gated-at.bofh.it> <uvnYl-3oZ-7@gated-at.bofh.it> <uvo81-3sE-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Sat, Sep 30, 2017 at 01:29:03PM +0200, Adam Borowski wrote:
> On Sat, Sep 30, 2017 at 01:11:37PM +0200, Borislav Petkov wrote:
> > On Sat, Sep 30, 2017 at 04:05:16AM +0200, Adam Borowski wrote:
> > > Any hints how to debug this?
> > 
> > Do
> > rdmsr -a 0xc0010015
> > as root and paste it here.
> 
> 1000010
> 1000010
> 1000010
> 1000010
> 1000010
> 1000010
> 
> on both 4.13.4 and 4.14-rc2+.

Boot into -rc2+ and do as root:

# wrmsr -a 0xc0010015 0x1000018

If the issue gets fixed then Mr. Luto better revert the new lazy TLB
flushing fun'n'games for 4.14 before it is too late and that kernel
releases b0rked.

Thx.

-- 
Regards/Gruss,
    Boris.

Good mailing practices for 400: avoid top-posting and trim the reply.

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Thread

random insta-reboots on AMD Phenom II Adam Borowski <kilobyte@angband.pl> - 2017-09-30 04:10 +0200
  Re: random insta-reboots on AMD Phenom II Borislav Petkov <bp@alien8.de> - 2017-09-30 13:20 +0200
    Re: random insta-reboots on AMD Phenom II Adam Borowski <kilobyte@angband.pl> - 2017-09-30 13:30 +0200
      Re: random insta-reboots on AMD Phenom II Borislav Petkov <bp@alien8.de> - 2017-09-30 14:00 +0200
        Re: random insta-reboots on AMD Phenom II Markus Trippelsdorf <markus@trippelsdorf.de> - 2017-09-30 14:50 +0200
          Re: random insta-reboots on AMD Phenom II Brian Gerst <brgerst@gmail.com> - 2017-09-30 16:30 +0200
            Re: random insta-reboots on AMD Phenom II Markus Trippelsdorf <markus@trippelsdorf.de> - 2017-09-30 17:30 +0200
          Re: random insta-reboots on AMD Phenom II Borislav Petkov <bp@alien8.de> - 2017-09-30 18:00 +0200
            Re: random insta-reboots on AMD Phenom II Andy Lutomirski <luto@kernel.org> - 2017-09-30 18:10 +0200
        Re: random insta-reboots on AMD Phenom II Andy Lutomirski <luto@amacapital.net> - 2017-09-30 17:20 +0200
          Re: random insta-reboots on AMD Phenom II Borislav Petkov <bp@alien8.de> - 2017-09-30 17:50 +0200
        Re: random insta-reboots on AMD Phenom II Adam Borowski <kilobyte@angband.pl> - 2017-10-01 15:10 +0200

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