Bug#1072290: systemd prevent system to boot if /etc/fstab as an /tmp entry

[eric]

Package: systemd
Version: 256~rc3-6
Severity: critical
Justification: breaks the whole system


if I let this entry in /etc/fstab
UUID=xxxxx /tmp            ext4    defaults,discard,noatime,nodiratime  0 2


System does not boot


-- Package-specific info:

-- System Information:
Debian Release: trixie/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'unstable'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 6.6.32 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=fr_FR.UTF8, LC_CTYPE=fr_FR.UTF8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages systemd depends on:
ii  libacl1            2.3.2-2
ii  libapparmor1       3.0.13-2
ii  libaudit1          1:3.1.2-2.1
ii  libblkid1          2.40.1-4
ii  libc6              2.39-2
ii  libcap2            1:2.66-5
ii  libcryptsetup12    2:2.7.2-2
ii  libfdisk1          2.40.1-4
ii  libmount1          2.40.1-4
ii  libpam0g           1.5.3-7
ii  libseccomp2        2.5.5-1
ii  libselinux1        3.5-2+b2
ii  libssl3t64         3.3.0-1
ii  libsystemd-shared  256~rc3-6
ii  libsystemd0        256~rc3-6
ii  mount              2.40.1-4

Versions of packages systemd recommends:
ii  dbus [default-dbus-system-bus]   1.15.8-4+b1
ii  libzstd1                         1.5.5+dfsg2-2
ii  systemd-timesyncd [time-daemon]  256~rc3-6

Versions of packages systemd suggests:
ii  libgcrypt20                                     1.10.3-3
ii  libidn2-0                                       2.3.7-2
ii  liblz4-1                                        1.9.4-2
ii  liblzma5                                        5.6.1+really5.4.5-1
ii  libtss2-rc0t64                                  4.1.3-1
ii  libtss2-tcti-device0t64 [libtss2-tcti-device0]  4.1.3-1
ii  polkitd                                         124-2
pn  systemd-boot                                    <none>
pn  systemd-container                               <none>
pn  systemd-homed                                   <none>
pn  systemd-resolved                                <none>
pn  systemd-userdbd                                 <none>

Versions of packages systemd is related to:
ii  dbus-user-session  1.15.8-4+b1
pn  dracut             <none>
ii  initramfs-tools    0.142
ii  libnss-systemd     256~rc3-6
ii  libpam-systemd     256~rc3-6
ii  udev               256~rc3-6

-- no debconf information