Hi Christian,
Thank for for the response. This is indeed a troubling bug - especially
since it crashes the entire system. The clarify, I originally posted
about the issue in /r/linux on Reddit, but because of a time critical
deadline I needed to uninstall 19.10. This is my production machine and
I attempted to install 19.10 over the weekend. In my haste I forgot to
take a snapshot of the log files!
Brian chimed in that he also was experiencing the same issues, so I
asked him if he would be willing to provide his log files so I could
open the bug report.
I *can* answer some of your questions.
In regards to the networking, I was just using the standard networking
that came pre-configured.
The XML looks something like this (stored at
/etc/libvirt/qemu/networks/default.xml)
<network>
<name>default</name>
<uuid>354a5337-37fb-47f9-a88b-1d1c505c5652</uuid>
<forward mode="nat">
<nat>
<port start="1024" end="65535"/>
</nat>
</forward>
<bridge name="virbr0" stp="on" delay="0"/>
<mac address="52:54:00:3f:c0:bf"/>
<domain name="default"/>
<ip address="192.168.100.1" netmask="255.255.255.0">
<dhcp>
<range start="192.168.100.128" end="192.168.100.254"/>
</dhcp>
</ip>
</network>
I don't have the exact values any more, but they were very similar. The
key is that the forwarding is NAT, and the virtual network is named
"default".
The XML for the actual VM looks something like this (again not exact
values, but very similar):
interface type="network">
<mac address="52:54:00:c1:03:4c"/>
<source network="default"/>
<model type="e1000e"/>
<address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</interface>
I would also be able to provide you with a stock Windows Server 2019
image if you would like for testing purposes. If you think this would
be helpful, send me an email at rstrube --at-- gmail.com and I'll send
you a link to download the image.
When I did a quick check in my logs, I did not notice any kernel panics
or anything that truly stood out to me in my syslog or the dmesg logs.
Perhaps Brian would be able to assist more since he still has 19.10
installed?
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https://bugs.launchpad.net/bugs/1849720
Title:
Running VM with Virtual NIC Crashes Host OS
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