On Mon, Apr 01, 2013 at 07:56:33AM +0000, Liuji (Jeremy) wrote: > I delete the "dev->sin = NULL;" in the last of "spice_char_device_reset" > function. And the "loadvm" is OK. > > But I don't know whether this change will lead to other problems. Who can > give me some advice?
See the ./MAINTAINERS file to find out who is responsible for a QEMU subsystem. I have CCed Gerd Hoffmann, who is the maintainer. Stefan > Best Regards, > > Jeremy Liu > > > Hello, everyone > > > > I found a problem about "loadvm", when I use Spice. > > > > Host OS: Fedora 17 > > Qemu: 1.4.0 > > Spice: 0.12.2 > > Quest OS: WinXP > > > > 1) Use the following command to start the VM: > > qemu-kvm -enable-kvm -name winxp -M pc-0.15 -m 1024 -smp 2 -boot c > > -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 > > -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x5 -drive > > file=/home/test/winxp.qcow2,if=virtio,index=0,format=qcow2 > > -net nic,model=virtio,macaddr=52:54:00:05:11:12 -monitor stdio -chardev > > spicevmc,id=charchannel0,name=vdagent > > -device > > virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 > > -chardev pty,id=charchannel1 > > -device > > virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=arbitrary.virtio.serial.port.name > > -device usb-tablet,id=input0 > > -spice > > port=3001,addr=186.100.8.131,disable-ticketing,plaintext-channel=main,plaintext-channel=playback,plaintext-channel=record,image-compression=auto_glz > > > > -vga qxl -global qxl-vga.vram_size=67108864 -device > > AC97,id=sound0,bus=pci.0,addr=0x4 > > 2) Use spice client to connect the VM. > > 3) Exec the "savevm" command in the qemu monitor. > > 4) List snapshot information: > > info snapshots > > ID TAG VM SIZE DATE VM CLOCK > > 1 vm-20130330181626 224M 2013-03-30 18:16:26 00:00:17.294 > > > > 5) Load the snapshot. But the process crashed: > > loadvm vm-20130330181626 > > red_dispatcher_loadvm_commands: > > Segmentation fault (core dumped) > > > > I use the GDB to analyze the core-dump file: > > #0 0x00007f6cbdc37a15 in spice_char_device_write_to_device > > (dev=0x7f6cc5248320) at char_device.c:439 > > 439 sif = SPICE_CONTAINEROF(dev->sin->base.sif, > > SpiceCharDeviceInterface, base); > > (gdb) p dev > > $1 = (SpiceCharDeviceState *) 0x7f6cc5248320 > > (gdb) p dev->sin > > $2 = (SpiceCharDeviceInstance *) 0x0 > > > > I have always found this problem after the > > commit(fc24f3bd2ed4c97c99ad40e747732ae46dff2009 "spice: notify spice server > > on vm start/stop"). > > > > Could you give me some advices to debug this problem? > > > > > > ------------------ > > Best Regards, > > > > Jeremy Liu >
