* [Qemu-devel] A crash problem about "loadvm"
@ 2013-03-30 10:38 Liuji (Jeremy)
2013-04-01 1:38 ` Wenchao Xia
2013-04-01 7:56 ` [Qemu-devel] " Liuji (Jeremy)
0 siblings, 2 replies; 6+ messages in thread
From: Liuji (Jeremy) @ 2013-03-30 10:38 UTC (permalink / raw)
To: qemu-devel@nongnu.org; +Cc: Luohao (brian), Haofeng
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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
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [Qemu-devel] A crash problem about "loadvm"
2013-03-30 10:38 [Qemu-devel] A crash problem about "loadvm" Liuji (Jeremy)
@ 2013-04-01 1:38 ` Wenchao Xia
2013-04-01 6:19 ` [Qemu-devel] 答复: " Liuji (Jeremy)
2013-04-01 7:56 ` [Qemu-devel] " Liuji (Jeremy)
1 sibling, 1 reply; 6+ messages in thread
From: Wenchao Xia @ 2013-04-01 1:38 UTC (permalink / raw)
To: Liuji (Jeremy); +Cc: Luohao (brian), qemu-devel@nongnu.org, Haofeng
于 2013-3-30 18:38, Liuji (Jeremy) 写道:
> 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
>
Seems some step missing for spice server, need to check the status in
migration.
--
Best Regards
Wenchao Xia
^ permalink raw reply [flat|nested] 6+ messages in thread
* [Qemu-devel] 答复: A crash problem about "loadvm"
2013-04-01 1:38 ` Wenchao Xia
@ 2013-04-01 6:19 ` Liuji (Jeremy)
0 siblings, 0 replies; 6+ messages in thread
From: Liuji (Jeremy) @ 2013-04-01 6:19 UTC (permalink / raw)
To: Wenchao Xia; +Cc: Luohao (brian), qemu-devel@nongnu.org, Haofeng
Hi, Wenchao
Thanks for your reply.
Could you tell me which step I missed? I checked the relevant information. But there seems to be no other operation before "loadvm".
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,na
> me=com.redhat.spice.0 -chardev pty,id=charchannel1
> > -device
> virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,na
> me=arbitrary.virtio.serial.port.name -device usb-tablet,id=input0
> > -spice
> port=3001,addr=186.100.8.131,disable-ticketing,plaintext-channel=main,plaint
> ext-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
> >
> Seems some step missing for spice server, need to check the status in
> migration.
>
>
> --
> Best Regards
>
> Wenchao Xia
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] A crash problem about "loadvm"
2013-03-30 10:38 [Qemu-devel] A crash problem about "loadvm" Liuji (Jeremy)
2013-04-01 1:38 ` Wenchao Xia
@ 2013-04-01 7:56 ` Liuji (Jeremy)
2013-04-08 12:07 ` Stefan Hajnoczi
1 sibling, 1 reply; 6+ messages in thread
From: Liuji (Jeremy) @ 2013-04-01 7:56 UTC (permalink / raw)
To: Liuji (Jeremy), qemu-devel@nongnu.org; +Cc: Luohao (brian), Haofeng
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?
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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] A crash problem about "loadvm"
2013-04-01 7:56 ` [Qemu-devel] " Liuji (Jeremy)
@ 2013-04-08 12:07 ` Stefan Hajnoczi
2013-04-15 7:20 ` Gerd Hoffmann
0 siblings, 1 reply; 6+ messages in thread
From: Stefan Hajnoczi @ 2013-04-08 12:07 UTC (permalink / raw)
To: Liuji (Jeremy)
Cc: Luohao (brian), qemu-devel@nongnu.org, Haofeng, Gerd Hoffmann
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
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [Qemu-devel] A crash problem about "loadvm"
2013-04-08 12:07 ` Stefan Hajnoczi
@ 2013-04-15 7:20 ` Gerd Hoffmann
0 siblings, 0 replies; 6+ messages in thread
From: Gerd Hoffmann @ 2013-04-15 7:20 UTC (permalink / raw)
To: Stefan Hajnoczi
Cc: Liuji (Jeremy), spice-devel, Luohao (brian),
qemu-devel@nongnu.org, Haofeng
On 04/08/13 14:07, Stefan Hajnoczi wrote:
> 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.
Adding spice-devel to cc
> 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
>>
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-04-15 7:20 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2013-03-30 10:38 [Qemu-devel] A crash problem about "loadvm" Liuji (Jeremy)
2013-04-01 1:38 ` Wenchao Xia
2013-04-01 6:19 ` [Qemu-devel] 答复: " Liuji (Jeremy)
2013-04-01 7:56 ` [Qemu-devel] " Liuji (Jeremy)
2013-04-08 12:07 ` Stefan Hajnoczi
2013-04-15 7:20 ` Gerd Hoffmann
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