What were you trying to do that didn't work?
The VM (with virtio device + PF/VF) will crash when hot-unplug the PF/VF

Please provide the package NVR for which bug is seen:
host:
5.14.0-471.el9.x86_64
qemu-kvm-9.0.50-5.el9.legoater202406261048.x86_64
libvirt-10.4.0-1.el9.x86_64

How reproducible:
100%

Steps to reproduce
1. start a VM with virtio iommu + MT2892 VF or PF

2. hot-unplug the VF from the VM

# /bin/virsh detach-device rhel10 /tmp/device/0000:60:01.2.xml
error: Failed to detach device from /tmp/device/0000:60:01.2.xml
error: internal error: End of file from qemu monitor (vm='rhel10')

3. check the qemu-kvm log

# cat /var/log/libvirt/qemu/rhel10.log 
malloc_consolidate(): invalid chunk size
2024-07-02 08:38:51.340+0000: shutting down, reason=crashed

Expected results
The PF/VF can be hot-unplug from the VM with virtio iommu device

Actual results
The VM crashes