Bug#1072187: systemd: root fs read only if /tmp is in fstab

[David Burrows]

Package: systemd
Version: 256~rc3-5
Severity: important
X-Debbugs-Cc: burrowsdav at gmail.com

Dear Maintainer,

Installing this update led to my system booting with root (btrfs)
mounted as read only.

In my fstab I have the following:
tmpfs                                     /tmp           tmpfs   defaults,noatime,mode=1777 0 0

Commenting this out allowed the system to boot again with read/write.

In order to restore tmpfs I had to do the following (as root):
cp /usr/lib/systemd/system/tmp.mount /usr/share/systemd/tmp.mount

The is optional if you wish to have /tmp on root.

Prior to doing this it appears there is a broken symlink:
$ ls -l /etc/systemd/system/tmp.mount
lrwxrwxrwx 1 root root 28 Dec 30  2022 /etc/systemd/system/tmp.mount -> /usr/share/systemd/tmp.mount

I'm guessing that tmp in fstab is no longer default, but I didn't put it
there and it must be left over from an older install. This is consistent with
another 3 systems of mine.


-- Package-specific info:

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.8.10-1-siduction-amd64 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (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              2.40.1-2
ii  libc6                  2.38-11
ii  libcap2                1:2.66-5
ii  libcryptsetup12        2:2.7.2-2
ii  libfdisk1              2.40.1-2
ii  libmount1              2.40.1-2
ii  libpam0t64 [libpam0g]  1.5.3-4
ii  libseccomp2            2.5.5-1
ii  libselinux1            3.5-2+b2
ii  libssl3t64             3.2.1-3
ii  libsystemd-shared      256~rc3-5
ii  libsystemd0            256~rc3-5
ii  mount                  2.40.1-2

Versions of packages systemd recommends:
ii  dbus [default-dbus-system-bus]   1.14.10-4+b1
ii  libzstd1                         1.5.5+dfsg2-2
ii  systemd-timesyncd [time-daemon]  256~rc3-5

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                                  4.1.0-1
ii  libtss2-tcti-device0t64 [libtss2-tcti-device0]  4.1.0-1
ii  polkitd                                         124-2
pn  systemd-boot                                    <none>
ii  systemd-container                               256~rc3-5
pn  systemd-homed                                   <none>
ii  systemd-resolved                                256~rc3-5
pn  systemd-userdbd                                 <none>

Versions of packages systemd is related to:
ii  dbus-user-session  1.14.10-4+b1
pn  dracut             <none>
ii  initramfs-tools    0.142
ii  libnss-systemd     256~rc3-5
ii  libpam-systemd     256~rc3-5
ii  udev               256~rc3-5

-- no debconf information