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

[Markus Trippelsdorf]

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.


-- 
Markus