Bug#976659: Kernel panic while upgrading systemd

[Guillaume Brocker]

Package: systemd
Version: 246.6-4

Dear maintainer,

I'm trying to upgrade systemd (along with libnss-systemd libpam-systemd 
libsystemd0 libudev1 systemd systemd-sysv systemd-timesyncd udev) from 
version 246-2 to version 246.6-4, but I'm encountering a kernel panic 
during systemd's package configuration. Please find as attchment the 
secreenshot with logs.

Regards,

Guillaume

-- System Information:
Debian Release: bullseye/sid
   APT prefers testing
   APT policy: (500, 'testing')
Architecture: i386 (i686)

Kernel: Linux 5.9.0-4-686-pae (SMP w/2 CPU threads)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8), LANGUAGE 
not set
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages systemd depends on:
ii  adduser                          3.118
ii  libacl1                          2.2.53-8
ii  libapparmor1                     2.13.5-1+b1
ii  libaudit1                        1:2.8.5-3.1
ii  libblkid1                        2.36.1-2
ii  libc6                            2.31-5
ii  libcap2                          1:2.44-1
ii  libcrypt1                        1:4.4.17-1
ii  libcryptsetup12                  2:2.3.4-1
ii  libgcrypt20                      1.8.7-2
ii  libgnutls30                      3.6.15-4
ii  libgpg-error0                    1.38-2
ii  libidn2-0                        2.3.0-4
ii  libip4tc2                        1.8.6-1
ii  libkmod2                         27+20200310-2
ii  liblz4-1                         1.9.2-2
ii  liblzma5                         5.2.4-1+b1
ii  libmount1                        2.36.1-2
ii  libpam0g                         1.3.1-5
ii  libpcre2-8-0                     10.34-7
ii  libseccomp2                      2.5.0-3
ii  libselinux1                      3.1-2+b1
ii  libsystemd0                      246-2
ii  libzstd1                         1.4.5+dfsg-4
ii  mount                            2.36.1-2
ii  systemd-timesyncd [time-daemon]  246-2
ii  util-linux                       2.36.1-2

Versions of packages systemd recommends:
ii  dbus  1.12.20-1

Versions of packages systemd suggests:
pn  policykit-1        <none>
pn  systemd-container  <none>

Versions of packages systemd is related to:
pn  dracut           <none>
ii  initramfs-tools  0.139
ii  libnss-systemd   246-2
ii  libpam-systemd   246-2
ii  udev             246-2