On 17.02.21 06:12, Marek Marczykowski-Górecki wrote:
> Hi,
> 
> I'm observing Linux PV/PVH guest crash when I resume it from sleep. I do
> this with:
> 
>      virsh -c xen dompmsuspend <vmname> mem
>      virsh -c xen dompmwakeup <vmname>
> 
> But it's possible to trigger it with plain xl too:
> 
>      xl save -c <vmname> <some-file>
> 
> The same on HVM works fine.
> 
> This is on Xen 4.14.1, and with guest kernel 5.4.90, the same happens
> with 5.4.98. Dom0 kernel is the same, but I'm not sure if that's
> relevant here. I can reliably reproduce it.

This is already on my list of issues to look at.

The problem seems to be related to the XSA-332 patches. You could try
the patches I've sent out recently addressing other fallout from XSA-332
which _might_ fix this issue, too:

https://patchew.org/Xen/20210211101616.13788-1-jgross@suse.com/


Juergen