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Re: random insta-reboots on AMD Phenom II

From Andy Lutomirski <luto@amacapital.net>
Newsgroups linux.kernel
Subject Re: random insta-reboots on AMD Phenom II
Date 2017-09-30 17:20 +0200
Message-ID <uvrIC-5R9-15@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> <uvoB5-3DX-7@gated-at.bofh.it>
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> On Sep 30, 2017, at 4:53 AM, Borislav Petkov <bp@alien8.de> wrote:
> 
>> 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.

Yeah, working on it.  It's not a straightforward revert.

> 
> 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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