Re: Linux PV/PVH domU crash on (guest) resume from suspend

[Jürgen Groß]

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-jgr...@suse.com/


Juergen

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