What were you trying to do that didn't work?

As subject

Please provide the package NVR for which bug is seen:

libvirt-10.0.0-7.el9.x86_64
python3-libvirt-10.0.0-1.el9.x86_64

How reproducible:

100%

Steps to reproduce

Bind/unbind an interface device in the infinite loop

For example:

ADDR=0000:17:00.1; while true;do echo $ADDR> /sys/bus/pci/devices/$ADDR/driver/unbind;echo $ADDR>/sys/bus/pci/drivers/tg3/bind;done

Invoke nodeDeviceDefineXML:

import libvirt
with libvirt.openReadOnly() as conn:
    while(True):
        conn.listDefinedInterfaces()

Result:
libvirt: XML-RPC error : Unable to encode message payload
---------------------------------------------------------------------------
libvirtError Traceback (most recent call last)
Cell In[5], line 3
1 with libvirt.openReadOnly() as conn:
2 while(True):
----> 3 conn.listDefinedInterfaces()

File /usr/lib64/python3.9/site-packages/libvirt.py:4923, in virConnect.listDefinedInterfaces(self)
4921 ret = libvirtmod.virConnectListDefinedInterfaces(self._o)
4922 if ret is None:
-> 4923 raise libvirtError('virConnectListDefinedInterfaces() failed')
4924 return ret

libvirtError: Unable to encode message payload

Expected results

No error

Actual results

As above

Thanks to rhn-support-lcheng for discovering this issue