On 2022-07-10 20:28, Gleb Smirnoff wrote:
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>
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>
A> The time may be from a few dozens of minutes to many hours.
A>
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>
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>
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.
Thank you everyone who responded. It seems that the problem was with
some BIOS configuration changes, probably related to the power settings.
Once I reset everything to factory defaults (plus some minimum "safe"
and well-understood changes) the problem went away.
It's really surprising that I saw it only with bhyve and only with the
particular kind of VMs. Perhaps there was a workload pattern that
triggered a hardware bug or overloaded some specific module.
Anyways, sorry for the noise and thank you for the help.
--
Andriy Gapon
https://standforukraine.com
https://razomforukraine.org
