Hi I've faced a similar problem on Debian.
My system is a Ryzen 1700 and I use windows and OSX VMs for work, and after I upgraded to Debian 10 I started getting random host freezes some time after booting the VMs. Strangely, I have a linux VM with almost identical config as the Windows 10 one and it doesn't cause a host crash. Since my processor is a rather troublesome one (I had hardware bugs in the past, which were worked around in the kernel), I assumed this to be another such case, especially since the bug didn't occur if I disabled SMT on the BIOS. However, since my system was very stable under Debian 9, I spent quite a few hours trying to root out what change could have cause it, and at least in my specific case (which I'm not sure is the same reported here), was traced back to a certain libvirt commit, more specifically this one: https://github.com/libvirt/libvirt/commit/3527f9dde67460e9f2d50ce52b8dade8c0848e86 So a suggestion to anyone affected: try to explicitly disable seccomp by setting `seccomp_sandbox = 0` in /etc/libvirt/qemu.conf -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1849720 Title: KVM with e1000e and WinGuest Host OS on kernel 5.3 (ok with 5.0) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1849720/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
