virtual: 0.939
KVM: 0.879
x86: 0.774
debug: 0.772
files: 0.742
hypervisor: 0.710
user-level: 0.641
operating system: 0.244
boot: 0.068
kernel: 0.045
PID: 0.025
performance: 0.024
TCG: 0.022
VMM: 0.019
register: 0.018
socket: 0.017
semantic: 0.015
device: 0.010
risc-v: 0.010
network: 0.007
architecture: 0.006
ppc: 0.006
alpha: 0.005
graphic: 0.003
assembly: 0.003
vnc: 0.003
peripherals: 0.002
permissions: 0.002
i386: 0.001
arm: 0.001
mistranslation: 0.001

[BUG][KVM_SET_USER_MEMORY_REGION] KVM_SET_USER_MEMORY_REGION failed

Hi all,
I start a VM in openstack, and openstack use libvirt to start qemu VM, but now log show this ERROR.
Is there any one know this?
The ERROR log from /var/log/libvirt/qemu/instance-0000000e.log
```
2023-03-14T10:09:17.674114Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
kvm_set_phys_mem: error registering slot: Invalid argument
2023-03-14 10:09:18.198+0000: shutting down, reason=crashed
```
The xml file
```
root@c1c2:~# cat /etc/libvirt/qemu/instance-0000000e.xml
<!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
  virsh edit instance-0000000e
or other application using the libvirt API.
-->
<domain type='kvm'>
  <name>instance-0000000e</name>
  <uuid>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</uuid>
  <metadata>
    <nova:instance xmlns:nova="
http://openstack.org/xmlns/libvirt/nova/1.1
">
      <nova:package version="25.1.0"/>
      <nova:name>provider-instance</nova:name>
      <nova:creationTime>2023-03-14 10:09:13</nova:creationTime>
      <nova:flavor name="cirros-os-dpu-test-1">
        <nova:memory>64</nova:memory>
        <nova:disk>1</nova:disk>
        <nova:swap>0</nova:swap>
        <nova:ephemeral>0</nova:ephemeral>
        <nova:vcpus>1</nova:vcpus>
      </nova:flavor>
      <nova:owner>
        <nova:user uuid="ff627ad39ed94479b9c5033bc462cf78">admin</nova:user>
        <nova:project uuid="512866f9994f4ad8916d8539a7cdeec9">admin</nova:project>
      </nova:owner>
      <nova:root type="image" uuid="9e58cb69-316a-4093-9f23-c1d1bd8edffe"/>
      <nova:ports>
        <nova:port uuid="77c1dc00-af39-4463-bea0-12808f4bc340">
          <nova:ip type="fixed" address="172.1.1.43" ipVersion="4"/>
        </nova:port>
      </nova:ports>
    </nova:instance>
  </metadata>
  <memory unit='KiB'>65536</memory>
  <currentMemory unit='KiB'>65536</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>OpenStack Foundation</entry>
      <entry name='product'>OpenStack Nova</entry>
      <entry name='version'>25.1.0</entry>
      <entry name='serial'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
      <entry name='uuid'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
      <entry name='family'>Virtual Machine</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-6.2'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmcoreinfo state='on'/>
  </features>
  <cpu mode='host-model' check='partial'>
    <topology sockets='1' dies='1' cores='1' threads='1'/>
  </cpu>
  <clock offset='utc'>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='piix3-uhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='hostdev' managed='yes'>
      <mac address='fa:16:3e:aa:d9:23'/>
      <source>
        <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x5'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </interface>
    <serial type='pty'>
      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
      <target type='serial' port='0'/>
    </console>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <audio id='1' type='none'/>
    <video>
      <model type='virtio' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x6'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </hostdev>
    <memballoon model='virtio'>
      <stats period='10'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
    <rng model='virtio'>
      <backend model='random'>/dev/urandom</backend>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </rng>
  </devices>
</domain>
```
----
Simon Jones

This is happened in ubuntu22.04.
QEMU is install by apt like this:
apt install -y qemu qemu-kvm qemu-system
and QEMU version is 6.2.0
----
Simon Jones
Simon Jones <
batmanustc@gmail.com
> 于2023年3月21日周二 08:40写道：
Hi all,
I start a VM in openstack, and openstack use libvirt to start qemu VM, but now log show this ERROR.
Is there any one know this?
The ERROR log from /var/log/libvirt/qemu/instance-0000000e.log
```
2023-03-14T10:09:17.674114Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
kvm_set_phys_mem: error registering slot: Invalid argument
2023-03-14 10:09:18.198+0000: shutting down, reason=crashed
```
The xml file
```
root@c1c2:~# cat /etc/libvirt/qemu/instance-0000000e.xml
<!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
  virsh edit instance-0000000e
or other application using the libvirt API.
-->
<domain type='kvm'>
  <name>instance-0000000e</name>
  <uuid>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</uuid>
  <metadata>
    <nova:instance xmlns:nova="
http://openstack.org/xmlns/libvirt/nova/1.1
">
      <nova:package version="25.1.0"/>
      <nova:name>provider-instance</nova:name>
      <nova:creationTime>2023-03-14 10:09:13</nova:creationTime>
      <nova:flavor name="cirros-os-dpu-test-1">
        <nova:memory>64</nova:memory>
        <nova:disk>1</nova:disk>
        <nova:swap>0</nova:swap>
        <nova:ephemeral>0</nova:ephemeral>
        <nova:vcpus>1</nova:vcpus>
      </nova:flavor>
      <nova:owner>
        <nova:user uuid="ff627ad39ed94479b9c5033bc462cf78">admin</nova:user>
        <nova:project uuid="512866f9994f4ad8916d8539a7cdeec9">admin</nova:project>
      </nova:owner>
      <nova:root type="image" uuid="9e58cb69-316a-4093-9f23-c1d1bd8edffe"/>
      <nova:ports>
        <nova:port uuid="77c1dc00-af39-4463-bea0-12808f4bc340">
          <nova:ip type="fixed" address="172.1.1.43" ipVersion="4"/>
        </nova:port>
      </nova:ports>
    </nova:instance>
  </metadata>
  <memory unit='KiB'>65536</memory>
  <currentMemory unit='KiB'>65536</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>OpenStack Foundation</entry>
      <entry name='product'>OpenStack Nova</entry>
      <entry name='version'>25.1.0</entry>
      <entry name='serial'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
      <entry name='uuid'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
      <entry name='family'>Virtual Machine</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-6.2'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmcoreinfo state='on'/>
  </features>
  <cpu mode='host-model' check='partial'>
    <topology sockets='1' dies='1' cores='1' threads='1'/>
  </cpu>
  <clock offset='utc'>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='piix3-uhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='hostdev' managed='yes'>
      <mac address='fa:16:3e:aa:d9:23'/>
      <source>
        <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x5'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </interface>
    <serial type='pty'>
      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
      <target type='serial' port='0'/>
    </console>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <audio id='1' type='none'/>
    <video>
      <model type='virtio' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x6'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </hostdev>
    <memballoon model='virtio'>
      <stats period='10'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
    <rng model='virtio'>
      <backend model='random'>/dev/urandom</backend>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </rng>
  </devices>
</domain>
```
----
Simon Jones

This is full ERROR log
2023-03-23 08:00:52.362+0000: starting up libvirt version: 8.0.0, package: 1ubuntu7.4 (Christian Ehrhardt <
christian.ehrhardt@canonical.com
> Tue, 22 Nov 2022 15:59:28 +0100), qemu version: 6.2.0Debian 1:6.2+dfsg-2ubuntu6.6, kernel: 5.19.0-35-generic, hostname: c1c2
LC_ALL=C \
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin \
HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e \
XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e/.local/share \
XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e/.cache \
XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-4-instance-0000000e/.config \
/usr/bin/qemu-system-x86_64 \
-name guest=instance-0000000e,debug-threads=on \
-S \
-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-4-instance-0000000e/master-key.aes"}' \
-machine pc-i440fx-6.2,usb=off,dump-guest-core=off,memory-backend=pc.ram \
-accel kvm \
-cpu Cooperlake,ss=on,vmx=on,pdcm=on,hypervisor=on,tsc-adjust=on,sha-ni=on,umip=on,waitpkg=on,gfni=on,vaes=on,vpclmulqdq=on,rdpid=on,movdiri=on,movdir64b=on,fsrm=on,md-clear=on,avx-vnni=on,xsaves=on,ibpb=on,ibrs=on,amd-stibp=on,amd-ssbd=on,hle=off,rtm=off,avx512f=off,avx512dq=off,avx512cd=off,avx512bw=off,avx512vl=off,avx512vnni=off,avx512-bf16=off,taa-no=off \
-m 64 \
-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":67108864}' \
-overcommit mem-lock=off \
-smp 1,sockets=1,dies=1,cores=1,threads=1 \
-uuid ff91d2dc-69a1-43ef-abde-c9e4e9a0305b \
-smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=25.1.0,serial=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,uuid=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,family=Virtual Machine' \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=33,server=on,wait=off \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc,driftfix=slew \
-global kvm-pit.lost_tick_policy=delay \
-no-hpet \
-no-shutdown \
-boot strict=on \
-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/_base/8b58db82a488248e7c5e769599954adaa47a5314","node-name":"libvirt-2-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":true,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \
-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage","backing":"libvirt-2-format"}' \
-device virtio-blk-pci,bus=pci.0,addr=0x3,drive=libvirt-1-format,id=virtio-disk0,bootindex=1,write-cache=on \
-add-fd set=1,fd=34 \
-chardev pty,id=charserial0,logfile=/dev/fdset/1,logappend=on \
-device isa-serial,chardev=charserial0,id=serial0 \
-device usb-tablet,id=input0,bus=usb.0,port=1 \
-audiodev '{"id":"audio1","driver":"none"}' \
-vnc
0.0.0.0:0
,audiodev=audio1 \
-device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
-device vfio-pci,host=0000:01:00.5,id=hostdev0,bus=pci.0,addr=0x4 \
-device vfio-pci,host=0000:01:00.6,id=hostdev1,bus=pci.0,addr=0x5 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
-object '{"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"}' \
-device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x7 \
-device vmcoreinfo \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
char device redirected to /dev/pts/3 (label charserial0)
2023-03-23T08:00:53.728550Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
kvm_set_phys_mem: error registering slot: Invalid argument
2023-03-23 08:00:54.201+0000: shutting down, reason=crashed
2023-03-23 08:54:43.468+0000: starting up libvirt version: 8.0.0, package: 1ubuntu7.4 (Christian Ehrhardt <
christian.ehrhardt@canonical.com
> Tue, 22 Nov 2022 15:59:28 +0100), qemu version: 6.2.0Debian 1:6.2+dfsg-2ubuntu6.6, kernel: 5.19.0-35-generic, hostname: c1c2
LC_ALL=C \
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin \
HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e \
XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e/.local/share \
XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e/.cache \
XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-5-instance-0000000e/.config \
/usr/bin/qemu-system-x86_64 \
-name guest=instance-0000000e,debug-threads=on \
-S \
-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-5-instance-0000000e/master-key.aes"}' \
-machine pc-i440fx-6.2,usb=off,dump-guest-core=off,memory-backend=pc.ram \
-accel kvm \
-cpu Cooperlake,ss=on,vmx=on,pdcm=on,hypervisor=on,tsc-adjust=on,sha-ni=on,umip=on,waitpkg=on,gfni=on,vaes=on,vpclmulqdq=on,rdpid=on,movdiri=on,movdir64b=on,fsrm=on,md-clear=on,avx-vnni=on,xsaves=on,ibpb=on,ibrs=on,amd-stibp=on,amd-ssbd=on,hle=off,rtm=off,avx512f=off,avx512dq=off,avx512cd=off,avx512bw=off,avx512vl=off,avx512vnni=off,avx512-bf16=off,taa-no=off \
-m 64 \
-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":67108864}' \
-overcommit mem-lock=off \
-smp 1,sockets=1,dies=1,cores=1,threads=1 \
-uuid ff91d2dc-69a1-43ef-abde-c9e4e9a0305b \
-smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=25.1.0,serial=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,uuid=ff91d2dc-69a1-43ef-abde-c9e4e9a0305b,family=Virtual Machine' \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=33,server=on,wait=off \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc,driftfix=slew \
-global kvm-pit.lost_tick_policy=delay \
-no-hpet \
-no-shutdown \
-boot strict=on \
-device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 \
-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/_base/8b58db82a488248e7c5e769599954adaa47a5314","node-name":"libvirt-2-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":true,"cache":{"direct":true,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \
-blockdev '{"driver":"file","filename":"/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk","node-name":"libvirt-1-storage","cache":{"direct":true,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":true,"no-flush":false},"driver":"qcow2","file":"libvirt-1-storage","backing":"libvirt-2-format"}' \
-device virtio-blk-pci,bus=pci.0,addr=0x3,drive=libvirt-1-format,id=virtio-disk0,bootindex=1,write-cache=on \
-add-fd set=1,fd=34 \
-chardev pty,id=charserial0,logfile=/dev/fdset/1,logappend=on \
-device isa-serial,chardev=charserial0,id=serial0 \
-device usb-tablet,id=input0,bus=usb.0,port=1 \
-audiodev '{"id":"audio1","driver":"none"}' \
-vnc
0.0.0.0:0
,audiodev=audio1 \
-device virtio-vga,id=video0,max_outputs=1,bus=pci.0,addr=0x2 \
-device vfio-pci,host=0000:01:00.5,id=hostdev0,bus=pci.0,addr=0x4 \
-device vfio-pci,host=0000:01:00.6,id=hostdev1,bus=pci.0,addr=0x5 \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 \
-object '{"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"}' \
-device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.0,addr=0x7 \
-device vmcoreinfo \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
char device redirected to /dev/pts/3 (label charserial0)
2023-03-23T08:54:44.755039Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
kvm_set_phys_mem: error registering slot: Invalid argument
2023-03-23 08:54:45.230+0000: shutting down, reason=crashed
----
Simon Jones
Simon Jones <
batmanustc@gmail.com
> 于2023年3月23日周四 05:49写道：
This is happened in ubuntu22.04.
QEMU is install by apt like this:
apt install -y qemu qemu-kvm qemu-system
and QEMU version is 6.2.0
----
Simon Jones
Simon Jones <
batmanustc@gmail.com
> 于2023年3月21日周二 08:40写道：
Hi all,
I start a VM in openstack, and openstack use libvirt to start qemu VM, but now log show this ERROR.
Is there any one know this?
The ERROR log from /var/log/libvirt/qemu/instance-0000000e.log
```
2023-03-14T10:09:17.674114Z qemu-system-x86_64: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION failed, slot=4, start=0xfffffffffe000000, size=0x2000: Invalid argument
kvm_set_phys_mem: error registering slot: Invalid argument
2023-03-14 10:09:18.198+0000: shutting down, reason=crashed
```
The xml file
```
root@c1c2:~# cat /etc/libvirt/qemu/instance-0000000e.xml
<!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
  virsh edit instance-0000000e
or other application using the libvirt API.
-->
<domain type='kvm'>
  <name>instance-0000000e</name>
  <uuid>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</uuid>
  <metadata>
    <nova:instance xmlns:nova="
http://openstack.org/xmlns/libvirt/nova/1.1
">
      <nova:package version="25.1.0"/>
      <nova:name>provider-instance</nova:name>
      <nova:creationTime>2023-03-14 10:09:13</nova:creationTime>
      <nova:flavor name="cirros-os-dpu-test-1">
        <nova:memory>64</nova:memory>
        <nova:disk>1</nova:disk>
        <nova:swap>0</nova:swap>
        <nova:ephemeral>0</nova:ephemeral>
        <nova:vcpus>1</nova:vcpus>
      </nova:flavor>
      <nova:owner>
        <nova:user uuid="ff627ad39ed94479b9c5033bc462cf78">admin</nova:user>
        <nova:project uuid="512866f9994f4ad8916d8539a7cdeec9">admin</nova:project>
      </nova:owner>
      <nova:root type="image" uuid="9e58cb69-316a-4093-9f23-c1d1bd8edffe"/>
      <nova:ports>
        <nova:port uuid="77c1dc00-af39-4463-bea0-12808f4bc340">
          <nova:ip type="fixed" address="172.1.1.43" ipVersion="4"/>
        </nova:port>
      </nova:ports>
    </nova:instance>
  </metadata>
  <memory unit='KiB'>65536</memory>
  <currentMemory unit='KiB'>65536</currentMemory>
  <vcpu placement='static'>1</vcpu>
  <sysinfo type='smbios'>
    <system>
      <entry name='manufacturer'>OpenStack Foundation</entry>
      <entry name='product'>OpenStack Nova</entry>
      <entry name='version'>25.1.0</entry>
      <entry name='serial'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
      <entry name='uuid'>ff91d2dc-69a1-43ef-abde-c9e4e9a0305b</entry>
      <entry name='family'>Virtual Machine</entry>
    </system>
  </sysinfo>
  <os>
    <type arch='x86_64' machine='pc-i440fx-6.2'>hvm</type>
    <boot dev='hd'/>
    <smbios mode='sysinfo'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <vmcoreinfo state='on'/>
  </features>
  <cpu mode='host-model' check='partial'>
    <topology sockets='1' dies='1' cores='1' threads='1'/>
  </cpu>
  <clock offset='utc'>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='hpet' present='no'/>
  </clock>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>destroy</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='qcow2' cache='none'/>
      <source file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/disk'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </disk>
    <controller type='usb' index='0' model='piix3-uhci'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <interface type='hostdev' managed='yes'>
      <mac address='fa:16:3e:aa:d9:23'/>
      <source>
        <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x5'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </interface>
    <serial type='pty'>
      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
      <target type='isa-serial' port='0'>
        <model name='isa-serial'/>
      </target>
    </serial>
    <console type='pty'>
      <log file='/var/lib/nova/instances/ff91d2dc-69a1-43ef-abde-c9e4e9a0305b/console.log' append='off'/>
      <target type='serial' port='0'/>
    </console>
    <input type='tablet' bus='usb'>
      <address type='usb' bus='0' port='1'/>
    </input>
    <input type='mouse' bus='ps2'/>
    <input type='keyboard' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
    <audio id='1' type='none'/>
    <video>
      <model type='virtio' heads='1' primary='yes'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <hostdev mode='subsystem' type='pci' managed='yes'>
      <source>
        <address domain='0x0000' bus='0x01' slot='0x00' function='0x6'/>
      </source>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </hostdev>
    <memballoon model='virtio'>
      <stats period='10'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
    </memballoon>
    <rng model='virtio'>
      <backend model='random'>/dev/urandom</backend>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
    </rng>
  </devices>
</domain>
```
----
Simon Jones