KVM clock jump and hung tasks

[Philipp Kern]

Binary package hint: kvm

I basically see http://kerneltrap.org/index.php?q=mailarchive/linux-kvm/2008/11/18/4155454 with Jaunty's kvm on amd64 and a lenny-i386 guest running d-i. I got a clock jump to Jul 6 (can't see which year) and a kernel hung task backtrace as attached (sadly only partially), from ldconfig during installation. I/O to disk is completely stuck.

The host is AMD with powernow activated. It's not an option to disable the latter, unfortunately.

[Philipp Kern (pkern)]

KVM command-line as invoked by libvirt:

root 28192 93.8 10.7 671204 371420 ? Sl Jun19 38:43 /usr/bin/kvm -S -M pc -m 512 -smp 1 -name buildd -uuid 787f2c0c-6379-fbd4-1cdd-083d289f475b -monitor pty -pidfile /var/run/libvirt/qemu//buildd.pid -boot n -drive file=/dev/simplex/buildd,if=virtio,index=0 -net nic,macaddr=54:52:00:2d:dd:f7,vlan=0,model=virtio -net tap,fd=16,script=,vlan=0,ifname=vnet0 -serial pty -parallel none -usb -vnc 127.0.0.1:0 -k en-us

[Philipp Kern (pkern)]

And the host has the following in its dmesg:

[167886.308175] kvm: 28192: cpu0 unhandled wrmsr: 0xc0010117 data 0
[167886.317707] kvm: 28192: cpu0 unhandled rdmsr: 0xc0010117
[167886.317776] kvm: 28192: cpu0 unhandled rdmsr: 0xc0010117