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From: Ed Maste <emaste@freebsd.org>
Date: Thu, 1 Feb 2018 13:40:56 -0500
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Subject: Re: Ryzen issues on FreeBSD ? (with sort of workaround)
To: Mike Tancsa <mike@sentex.net>
Cc: Nimrod Levy <nimrodl@gmail.com>, Don Lewis <truckman@freebsd.org>, 
 freebsd-stable stable <freebsd-stable@freebsd.org>,
 Andriy Gapon <avg@freebsd.org>, 
 Peter Moody <freebsd@hda3.com>, Pete French <petefrench@ingresso.co.uk>
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On 30 January 2018 at 19:48, Mike Tancsa <mike@sentex.net> wrote:
>>
> I also just tried upgrading to the latest HEAD with a generic kernel and
> same / similar lockups although procstat -kk gives some odd results
>
>
> root@amdtestr12:/home/mdtancsa # procstat -kk 6067
>   PID    TID COMM                TDNAME              KSTACK
>
>  6067 100865 python2.7           -                   ??+0 ??+0 ??+0 ??+0
> ??+0 ??+0 ??+0 ??+0 ??+0 ??+0

I think this part is due to the broken loader change in r328536.
Kernel symbol loading is broken, and this in particular isn't related
to Ryzen issues.