Description of problem:
When spice migration finished, remote-viewer disconnected and got Segmentation fault (core dumped)

Version-Release number of selected component (if applicable):
kernel-2.6.32-302.el6.x86_64
virt-viewer-0.5.2-10.el6.x86_64
python-virtinst-0.600.0-8.el6.noarch
virt-manager-0.9.0-14.el6.x86_64
spice-gtk-0.13.29-2.el6.x86_64
libvirt-0.10.1-1.el6.x86_64

How reproducible:
Always

Steps to Reproduce:
0.Prepare two hosts, source and target

1.Edit graphics element of guest's xml like this:
#virsh dumpxml test --security-info
...
<graphics type='spice' port='5900' tlsPort='5901' autoport='yes' passwd='aaabbb' passwdValidTo='2022-08-04T02:14:01'>
      <channel name='main' mode='secure'/>
      <channel name='record' mode='insecure'/>
</graphics>
...

2.Modify the followings in /etc/libvirt/qemu.conf, both on source and target host
uncomment # spice_listen = "0.0.0.0"
spice_listen = "0.0.0.0"

uncomment # spice_tls = 1
spice_tls = 1

uncomment # spice_tls_x509_cert_dir = "/etc/pki/libvirt-spice"
spice_tls_x509_cert_dir = "/etc/pki/libvirt-spice"

3.Perform the following script on source host, to generate the cert files for ssl
#!/bin/bash

SERVER_KEY=server-key.pem

# creating a key for our ca
if [ ! -e ca-key.pem ]; then
    openssl genrsa -des3 -out ca-key.pem 1024
fi
# creating a ca
if [ ! -e ca-cert.pem ]; then
    openssl req -new -x509 -days 1095 -key ca-key.pem -out ca-cert.pem  -subj "/C=IL/L=Raanana/O=Red Hat/CN=my CA"
fi
# create server key
if [ ! -e $SERVER_KEY ]; then
    openssl genrsa -out $SERVER_KEY 1024
fi
# create a certificate signing request (csr)
if [ ! -e server-key.csr ]; then
    openssl req -new -key $SERVER_KEY -out server-key.csr -subj "/C=IL/L=Raanana/O=Red Hat/CN=my server"
fi
# signing our server certificate with this ca
if [ ! -e server-cert.pem ]; then
    openssl x509 -req -days 1095 -in server-key.csr -CA ca-cert.pem -CAkey ca-key.pem -set_serial 01 -out server-cert.pem
fi

# now create a key that doesn't require a passphrase
openssl rsa -in $SERVER_KEY -out $SERVER_KEY.insecure
mv $SERVER_KEY $SERVER_KEY.secure
mv $SERVER_KEY.insecure $SERVER_KEY

# show the results (no other effect)
openssl rsa -noout -text -in $SERVER_KEY
openssl rsa -noout -text -in ca-key.pem
openssl req -noout -text -in server-key.csr
openssl x509 -noout -text -in server-cert.pem
openssl x509 -noout -text -in ca-cert.pem

# copy *.pem file to /etc/pki/libvirt-spice
if [[ -d "/etc/pki/libvirt-spice" ]] 
then
    cp ./*.pem /etc/pki/libvirt-spice
else
    mkdir /etc/pki/libvirt-spice
        cp ./*.pem /etc/pki/libvirt-spice
fi

# echo --host-subject
echo "your --host-subject is" \" `openssl x509 -noout -text -in server-cert.pem | grep Subject: | cut -f 10- -d " "` \"

4.scp /etc/pki/libvirt-spice/* to the target machine /etc/pki/libvirt-spice

5.Restart libvirtd on both source and target host to rescan the configuration
# service libvirtd restart

6.Start the guest
# virsh start guest 

7.Access the spice interface with ssl connection on source machine
# remote-viewer  spice://$ip/?tls-port=5901 --spice-host-subject "C=IL,L=Raanana,O=Red Hat,CN=my server" --spice-ca-file /etc/pki/libvirt-spice/ca-cert.pem
input password

8. migrate guest on source machine to target machine
# virsh migrate --live guest qemu+ssh://$destination_IP/system
  
Actual results:
When spice migration finished, remote-viewer disconnected and got Segmentation fault (core dumped)

Expected results:
spice session always keeps connected . And there is no error for migration.

Additional info: