[Pkg-libvirt-maintainers] Bug#940475: /usr/sbin/libvirtd: libvirtd fail to start with "internal error: Some activation file descriptors are unclaimed"

[Mirko]

Package: libvirt-daemon
Version: 5.6.0-2
Severity: important
File: /usr/sbin/libvirtd

Dear Maintainer,

after upgrade to libivrtd version 5.6.0 i'm not able to start libvirtd service.
I have followed instruction on thread: https://www.spinics.net/linux/fedora/libvir/msg189157.html
but without resolving.

Thanks in advance.

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.2.0-2-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_FIRMWARE_WORKAROUND, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE=it_IT.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libvirt-daemon depends on:
ii  libblkid1           2.34-0.1
ii  libc6               2.29-1
ii  libcap-ng0          0.7.9-2+b1
ii  libdbus-1-3         1.12.16-1
ii  libdevmapper1.02.1  2:1.02.155-3
ii  libfuse2            2.9.9-2
ii  libgcc1             1:9.2.1-8
ii  libgnutls30         3.6.9-5
ii  libnetcf1           1:0.2.8-1+b3
ii  libparted2          3.2-26
ii  libpcap0.8          1.9.0-2
ii  libpciaccess0       0.14-1
ii  libselinux1         2.9-2+b2
ii  libudev1            242-7
ii  libvirt0            5.6.0-2
ii  libxenmisc4.11      4.11.1+92-g6c33308a8d-2+b1
ii  libxenstore3.0      4.11.1+92-g6c33308a8d-2+b1
ii  libxentoollog1      4.11.1+92-g6c33308a8d-2+b1
ii  libxml2             2.9.4+dfsg1-7+b3

Versions of packages libvirt-daemon recommends:
ii  libxml2-utils   2.9.4+dfsg1-7+b3
ii  netcat-openbsd  1.203-2
ii  qemu-kvm        1:4.1-1+b1

Versions of packages libvirt-daemon suggests:
pn  libvirt-daemon-driver-storage-gluster  <none>
pn  libvirt-daemon-driver-storage-rbd      <none>
pn  libvirt-daemon-driver-storage-zfs      <none>
ii  libvirt-daemon-system                  5.6.0-2
pn  numad                                  <none>

-- no debconf information