On Fri, May 11, 2012 at 12:37:49PM +0800, Amos Kong wrote: > good: 3.3.0 guest kernel & qemu-kvm-rhel6 > guest panic: 3.3.0 guest kernel & qemu-upstream (contains fix [1]) > > I didn't change anything of guest kernel, > It seems a bug of qemu-upstream. > > [1] http://marc.info/?l=qemu-devel&m=133670266801022&w=2 > [PATCH] qom: fix refcounting in object_property_del_child() > > > >>> Start VM with one block device: > qemu-upstream --enable-kvm -name 'vm1' -nodefaults -drive > file='nolvm.qcow2',index=0,if=virtio,cache=none,snapshot=on -net none -m > 2000 -smp 2 -vnc :0 -kernel vmlinuz-3.3.0 -append 'ro root=/dev/vda1 > console=tty0 console=ttyS0,115200' -drive > file=images/u0,if=none,id=drive-virtio0-0-0,format=qcow2,cache=none > -device virtio-blk-pci,drive=drive-virtio0-0-0,id=virti0-0-0 -monitor > unix:/tmp/m,nowait,server > > >>> hot-remove the virtio disk > (qemu)# echo "device_del virti0-0-0" | nc -U /tmp/m > > >>> guest panic:
Find a working version and bisect?