Xubuntu 20.04にアンチ・ウイルスソフトClamAVをインストールしましたが、"clamdscan --multiscan"が動きません。
次の状況ですが、対処方法がわかりませんでしょうか。

$ sudo mkdir /var/moved_virus
$ sudo chmod 777 /var/moved_virus
$ cd ~/tmp
$ wget http://www.eicar.org/download/eicar.com
$ clamdscan --multiscan --fdpass --move /var/moved_virus ~/tmp > ~/clamdscan-trial.txt
Segmentation fault (コアダンプ)
$ echo $?
139

$ ls ~/tmp
eicar.com

$ ls -l ~/clamdscan-trial.txt
-rw------- 1 myuser myuser 0  4月 24 20:02 /home/myuser/clamdscan-trial.txt

$ clamdscan --fdpass --move /var/moved_virus ~/tmp > ~/clamdscan-trial.txt
$echo $?
1

$ cat ~/clamdscan-trial.txt
/home/myuser/tmp/eicar.com: Win.Test.EICAR_HDB-1 FOUND
traverse_rename: Failed to rename: /home/myuser/tmp/eicar.com
    to: /var/moved_virus/eicar.com
Error:Invalid cross-device link
/home/myuser/tmp/eicar.com: moved to '/var/moved_virus/eicar.com'

----------- SCAN SUMMARY -----------
Infected files: 1
Time: 0.259 sec (0 m 0 s)
Start Date: 2021:04:24 20:04:57
End Date:   2021:04:24 20:04:57

$ ls /var/moved_virus/
eicar.com

$ dpkg -l | grep clam
ii  clamav                                 0.103.2+dfsg-0ubuntu0.20.04.1         amd64        anti-virus utility for Unix - command-line interface
ii  clamav-base                            0.103.2+dfsg-0ubuntu0.20.04.1         all          anti-virus utility for Unix - base package
ii  clamav-daemon                          0.103.2+dfsg-0ubuntu0.20.04.1         amd64        anti-virus utility for Unix - scanner daemon
ii  clamav-freshclam                       0.103.2+dfsg-0ubuntu0.20.04.1         amd64        anti-virus utility for Unix - virus database update utility
ii  clamdscan                              0.103.2+dfsg-0ubuntu0.20.04.1         amd64        anti-virus utility for Unix - scanner client
ii  libclamav9:amd64                       0.103.2+dfsg-0ubuntu0.20.04.1         amd64        anti-virus utility for Unix - library

$ ps ax | grep clam | grep -v grep
    802 ?        Ssl  379:50 /usr/sbin/clamd --foreground=true
   1076 ?        Ss     0:00 /usr/bin/freshclam -d --foreground=true