Package: linux-image Version: 4.9.168-1+deb9u2
I'm running debian 9.9 stretch and after installing the recent security update, https://www.debian.org/security/2019/dsa-4444, my machine now runs the 4.9.0-9 kernel but no-longer runs my kvm guest VM's. Using modprobe and dmesg, I see the following kvm-intel module errors:
kernel: [ 6.234764] kvm_intel: Unknown symbol cpu_tlbstate (err -22) kernel: [ 6.235463] kvm_intel: Unknown symbol mds_user_clear (err 0) kernel: [ 6.330732] kvm_intel: disagrees about version of symbol cpu_tlbstate
I've tried re-installing the kvm modules per the visualization wiki to no avail and I've tried installing the linux-microcode package but that hasn't helped either. I ended up backing out the linux-microcode package and have booted back to the 4.9.0-8 kernel. Going back to this previous kernel has solved the issue and my guest VM's are now running fine.
