[cfarm-users] Upgrade status and status on cfarm offline

Markus Trippelsdorf markus at trippelsdorf.de
Sat Aug 19 12:16:41 CEST 2017

On 2017.08.19 at 12:12 +0200, Torbjörn Granlund wrote:
> Markus Trippelsdorf via cfarm-users <cfarm-users at lists.tetaneutral.net>
> writes:
>   On 2017.08.19 at 10:59 +0200, Aymeric via cfarm-users wrote:
>   > gcc67 is unstable, we are aware, either there is a bug within the
>   > processor or within the kernel (maybe both), last captured crash was a
>   > kernel Oops. From what we found were are not the only one to have
>   > stability issue with AMD Ryzen and Linux.
>   It is a CPU bug. The only solution is to RMA the CPU. Just contact AMD.
>   They are aware of the issue. All Ryzen CPUs are potentially affected.
>   See: https://community.amd.com/thread/215773
> Not all Ryzen CPUs are affected, only ones produced until some time
> during the spring (week 25 CPUs are said to be good).
> It is a good idea to flash the latest BIOS before doing anything else.
> Many Ryzen bugs can be worked around with BIOS supplied firmware.  The
> segfault bug might not have a firmware fix, though.

I've seen several random segfaults on gcc67 myself. There is no firmware
workaround. The silicon is buggy.


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