Re: problem with bhyve, ryzen 5800x, freebsd guest

From: Gleb Smirnoff <>
Date: Sun, 10 Jul 2022 17:28:05 UTC
On Thu, Jul 07, 2022 at 03:29:04PM +0300, Andriy Gapon wrote:
A> I have a strange issue with running an 'appliance' image based on 
A> FreeBSD 12 in bhyve on a machine with Ryzen 5800x processor.
A> The problem is that the guest would run for a while and then the host 
A> would suddenly reset itself.  It appears like a triple fault or 
A> something with similar consequences.
A> The time may be from a few dozens of minutes to many hours.
A> Just to be clear, no such thing occurs if I do not run the guest.
A> Also, I have an older AMD system (pre-Zen), the problem does not happen 
A> there.
A> A vanilla FreeBSD 12.3 installation that just sits idle also does not 
A> cause the problem.
A> Does anyone have an idea what the problem could be?
A> What workaround or diagnostics to try?
A> Anybody else seen something like this?
A> Since it's the host that resets it would be hard to capture any traces.

I also run bhyve on Ryzen since late 2021 and never had such an issue.
But not FreeBSD 12, I run the head.

Gleb Smirnoff