Bug 2189423

Description of problem:
Failed to migrate VM from rhel 9.3 to rhel 9.2 

Version-Release number of selected component (if applicable):
RHEL 9.3 
[root@dell-per750-39 home]# uname -r
5.14.0-300.el9.x86_64
[root@dell-per750-39 home]# rpm -qa|grep qemu-kvm
qemu-kvm-common-8.0.0-1.el9.x86_64
qemu-kvm-device-display-virtio-gpu-8.0.0-1.el9.x86_64
qemu-kvm-ui-opengl-8.0.0-1.el9.x86_64
qemu-kvm-ui-egl-headless-8.0.0-1.el9.x86_64
qemu-kvm-device-display-virtio-gpu-pci-8.0.0-1.el9.x86_64
qemu-kvm-audio-pa-8.0.0-1.el9.x86_64
qemu-kvm-block-rbd-8.0.0-1.el9.x86_64
qemu-kvm-device-display-virtio-vga-8.0.0-1.el9.x86_64
qemu-kvm-device-usb-host-8.0.0-1.el9.x86_64
qemu-kvm-device-usb-redirect-8.0.0-1.el9.x86_64
qemu-kvm-tools-8.0.0-1.el9.x86_64
qemu-kvm-docs-8.0.0-1.el9.x86_64
qemu-kvm-core-8.0.0-1.el9.x86_64
qemu-kvm-8.0.0-1.el9.x86_64

RHEL 9.2 host
[root@lenovo-sr630-05 rhel920]# uname -r
5.14.0-268.el9.x86_64
[root@lenovo-sr630-05 rhel920]# rpm -qa|grep qemu-kvm
qemu-kvm-common-7.2.0-14.el9_2.x86_64
qemu-kvm-device-display-virtio-gpu-7.2.0-14.el9_2.x86_64
qemu-kvm-ui-opengl-7.2.0-14.el9_2.x86_64
qemu-kvm-ui-egl-headless-7.2.0-14.el9_2.x86_64
qemu-kvm-device-display-virtio-gpu-pci-7.2.0-14.el9_2.x86_64
qemu-kvm-audio-pa-7.2.0-14.el9_2.x86_64
qemu-kvm-block-rbd-7.2.0-14.el9_2.x86_64
qemu-kvm-device-display-virtio-vga-7.2.0-14.el9_2.x86_64
qemu-kvm-device-usb-host-7.2.0-14.el9_2.x86_64
qemu-kvm-device-usb-redirect-7.2.0-14.el9_2.x86_64
qemu-kvm-tools-7.2.0-14.el9_2.x86_64
qemu-kvm-docs-7.2.0-14.el9_2.x86_64
qemu-kvm-core-7.2.0-14.el9_2.x86_64
qemu-kvm-7.2.0-14.el9_2.x86_64

How reproducible:
5/5

Steps to Reproduce:
1.Boot up VM on RHEL 9.3 host
/usr/libexec/qemu-kvm -name guest=rhel,debug-threads=on -machine pc-q35-rhel9.2.0,usb=off,smm=on,dump-guest-core=off,memory-backend=pc.ram,hpet=off,acpi=on -accel kvm -cpu Nehalem -global driver=cfi.pflash01,property=secure,value=on -m 1536 -object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":1610612736}' -overcommit mem-lock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 7881821b-07fd-4dbf-9d5a-12df440ff75e -no-user-config -nodefaults -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=delay -no-shutdown -global ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 -boot strict=on -device '{"driver":"pcie-root-port","port":16,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x2"}' -device '{"driver":"pcie-root-port","port":17,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x2.0x1"}' -device '{"driver":"pcie-root-port","port":18,"chassis":3,"id":"pci.3","bus":"pcie.0","addr":"0x2.0x2"}' -device '{"driver":"pcie-root-port","port":19,"chassis":4,"id":"pci.4","bus":"pcie.0","addr":"0x2.0x3"}' -device '{"driver":"pcie-root-port","port":20,"chassis":5,"id":"pci.5","bus":"pcie.0","addr":"0x2.0x4"}' -device '{"driver":"pcie-root-port","port":21,"chassis":6,"id":"pci.6","bus":"pcie.0","addr":"0x2.0x5"}' -device '{"driver":"pcie-root-port","port":22,"chassis":7,"id":"pci.7","bus":"pcie.0","addr":"0x2.0x6"}' -device '{"driver":"pcie-root-port","port":23,"chassis":8,"id":"pci.8","bus":"pcie.0","addr":"0x2.0x7"}' -device '{"driver":"pcie-root-port","port":24,"chassis":9,"id":"pci.9","bus":"pcie.0","multifunction":true,"addr":"0x3"}' -device '{"driver":"pcie-root-port","port":25,"chassis":10,"id":"pci.10","bus":"pcie.0","addr":"0x3.0x1"}' -device '{"driver":"pcie-root-port","port":26,"chassis":11,"id":"pci.11","bus":"pcie.0","addr":"0x3.0x2"}' -device '{"driver":"pcie-root-port","port":27,"chassis":12,"id":"pci.12","bus":"pcie.0","addr":"0x3.0x3"}' -device '{"driver":"pcie-root-port","port":28,"chassis":13,"id":"pci.13","bus":"pcie.0","addr":"0x3.0x4"}' -device '{"driver":"pcie-root-port","port":29,"chassis":14,"id":"pci.14","bus":"pcie.0","addr":"0x3.0x5"}' -device '{"driver":"qemu-xhci","p2":15,"p3":15,"id":"usb","bus":"pci.2","addr":"0x0"}' -chardev pty,id=charserial0 -device '{"driver":"isa-serial","chardev":"charserial0","id":"serial0","index":0}' -device '{"driver":"usb-tablet","id":"input0","bus":"usb.0","port":"1"}' -audiodev '{"id":"audio1","driver":"none"}' -vnc 127.0.0.1:0,audiodev=audio1 -device '{"driver":"virtio-vga","id":"video0","max_outputs":1,"bus":"pcie.0","addr":"0x1"}' -global ICH9-LPC.noreboot=off -watchdog-action reset -device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.5","addr":"0x0"}' -object '{"qom-type":"rng-random","id":"objrng0","filename":"/dev/urandom"}' -device '{"driver":"virtio-rng-pci","rng":"objrng0","id":"rng0","bus":"pci.6","addr":"0x0"}' -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny -msg timestamp=on -monitor stdio

2.migrate it to RHEL 9.2 host
3.
Actual results:
[root@lenovo-sr630-05 rhel920]# sh dst_short.sh 
char device redirected to /dev/pts/5 (label charserial0)
QEMU 7.2.0 monitor - type 'help' for more information
(qemu) migrate_incoming tcp:[::]:4000
(qemu) 2023-04-25T07:21:59.877733Z qemu-kvm: get_pci_config_device: Bad config data: i=0x10a read: 40 device: 0 cmask: ff wmask: 0 w1cmask:0
2023-04-25T07:21:59.877803Z qemu-kvm: Failed to load PCIDevice:config
2023-04-25T07:21:59.877829Z qemu-kvm: Failed to load pcie-root-port:parent_obj.parent_obj.parent_obj
2023-04-25T07:21:59.877849Z qemu-kvm: error while loading state for instance 0x0 of device '0000:00:02.0/pcie-root-port'
2023-04-25T07:21:59.878250Z qemu-kvm: load of migration failed: Invalid argument

Expected results:
Should work well.

Additional info:
The issue can be triggered by libvirt so please help to check it, thanks.