Bug#928030: gnome: GNOME/Wayland + GDM3 die if the root disk fills up

Package: gnome
Version: 1:3.30+1
Severity: important

If the root disk fills up*, the desktop session dies and so does GDM3,
which does not come back up if restarted via systemctl etc. until the
/ partition has some space restored to it.

This does not happen with GNOME/Xorg: the desktop session persists,
although upon logging out and returning to GDM3 it does not come up.

*  tested and reproduced in a VM with simple partitioning; everything in /.
   The bit that matters might be a sub-component of / e.g. /var

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'testing-debug'), (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-1-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gnome depends on:
ii  avahi-daemon                     0.7-4+b1
ii  cheese                           3.31.90-1
ii  cups-pk-helper                   0.2.6-1+b1
ii  desktop-base                     10.0.2
ii  evolution                        3.30.5-1
ii  evolution-plugins                3.30.5-1
ii  file-roller                      3.30.1-2
ii  gedit-plugins                    3.30.1-3
ii  gnome-calendar                   3.30.1-2
ii  gnome-clocks                     3.30.1-2
ii  gnome-color-manager              3.30.0-2
ii  gnome-core                       1:3.30+1
ii  gnome-documents                  3.31.92-1
ii  gnome-getting-started-docs       3.30.0-1
ii  gnome-maps                       3.30.3-1
ii  gnome-music                      3.30.2-1
ii  gnome-screenshot                 3.30.0-2
ii  gnome-sound-recorder             3.28.2-1
ii  gnome-todo                       3.28.1-2
ii  gnome-tweaks                     3.30.2-1
ii  gnome-weather                    3.26.0-5
ii  gstreamer1.0-libav               1.15.0.1+git20180723+db823502-2
ii  gstreamer1.0-plugins-ugly        1.14.4-1
ii  libgsf-bin                       1.14.45-1
ii  libproxy1-plugin-networkmanager  0.4.15-5
ii  libreoffice-calc                 1:6.1.5-2
ii  libreoffice-gnome                1:6.1.5-2
ii  libreoffice-impress              1:6.1.5-2
ii  libreoffice-writer               1:6.1.5-2
ii  nautilus-sendto                  3.8.6-3
ii  network-manager-gnome            1.8.20-1
ii  orca                             3.30.1-1
ii  rhythmbox                        3.4.3-2
ii  rhythmbox-plugin-cdrecorder      3.4.3-2
ii  rhythmbox-plugins                3.4.3-2
ii  rygel-playbin                    0.36.2-4
ii  rygel-tracker                    0.36.2-4
ii  seahorse                         3.30.1.1-1
ii  shotwell                         0.30.1-1
ii  simple-scan                      3.30.1.1-1+b1
ii  totem-plugins                    3.30.0-4
ii  vinagre                          3.22.0-6
ii  vino                             3.22.0-5
ii  xdg-user-dirs-gtk                0.10-3

Versions of packages gnome recommends:
ii  gnome-games                 1:3.30+1
ii  nautilus-extension-brasero  3.12.2-5
ii  transmission-gtk            2.94-2

Versions of packages gnome suggests:
pn  alacarte                                 <none>
pn  empathy                                  <none>
pn  firefox-esr-l10n-all | firefox-l10n-all  <none>
pn  gnome-remote-desktop                     <none>
pn  goobox | sound-juicer                    <none>
ii  polari                                   3.30.2-1
pn  webext-ublock-origin                     <none>

Versions of packages gnome-core depends on:
ii  adwaita-icon-theme            3.30.1-1
ii  at-spi2-core                  2.30.0-7
ii  baobab                        3.30.0-2
ii  caribou                       0.4.21-7
ii  dconf-cli                     0.30.1-2
ii  dconf-gsettings-backend       0.30.1-2
ii  eog                           3.28.4-2+b1
ii  evince                        3.30.2-3
ii  evolution-data-server         3.30.5-1
ii  firefox                       66.0.1-1
ii  firefox-esr                   60.6.1esr-1
ii  fonts-cantarell               0.111-2
ii  gdm3                          3.30.2-3
ii  gedit                         3.30.2-2
ii  gkbd-capplet                  3.26.1-1
ii  glib-networking               2.58.0-2
ii  gnome-backgrounds             3.30.0-1
ii  gnome-bluetooth               3.28.2-3
ii  gnome-calculator              3.30.1-2
ii  gnome-characters              3.30.0-2
ii  gnome-contacts                3.30.2-1
ii  gnome-control-center          1:3.30.3-1
ii  gnome-disk-utility            3.30.2-3
ii  gnome-font-viewer             3.30.0-2
ii  gnome-keyring                 3.28.2-5
ii  gnome-logs                    3.30.0-2
ii  gnome-menus                   3.31.4-3
ii  gnome-online-accounts         3.30.1-2
ii  gnome-online-miners           3.30.0-2
ii  gnome-session                 3.30.1-2
ii  gnome-settings-daemon         3.30.2-3
ii  gnome-shell                   3.30.2-3
ii  gnome-shell-extensions        3.30.1-1
ii  gnome-software                3.30.6-5
ii  gnome-sushi                   3.30.0-2
ii  gnome-system-monitor          3.30.0-2
ii  gnome-terminal                3.30.2-2
ii  gnome-themes-extra            3.28-1
ii  gnome-user-docs               3.30.2-1
ii  gnome-user-share              3.28.0-2
ii  gsettings-desktop-schemas     3.28.1-1
ii  gstreamer1.0-packagekit       1.1.12-5
ii  gstreamer1.0-plugins-base     1.14.4-1
ii  gstreamer1.0-plugins-good     1.14.4-1
ii  gstreamer1.0-pulseaudio       1.14.4-1
ii  gvfs-backends                 1.38.1-3
ii  gvfs-fuse                     1.38.1-3
ii  libatk-adaptor                2.30.0-5
ii  libcanberra-pulse             0.30-7
ii  libglib2.0-bin                2.58.3-1
ii  libpam-gnome-keyring          3.28.2-5
ii  libproxy1-plugin-gsettings    0.4.15-5
ii  libproxy1-plugin-webkit       0.4.15-5
ii  nautilus                      3.30.5-1
ii  pulseaudio                    12.2-4
ii  pulseaudio-module-bluetooth   12.2-4
ii  sound-theme-freedesktop       0.8-2
ii  system-config-printer-common  1.5.11-4
ii  system-config-printer-udev    1.5.11-4
ii  totem                         3.30.0-4
ii  tracker                       2.1.8-1
ii  yelp                          3.31.90-1
ii  zenity                        3.30.0-2

Versions of packages gnome-core recommends:
ii  libproxy1-plugin-networkmanager  0.4.15-5
ii  network-manager-gnome            1.8.20-1

gnome-core suggests no packages.

-- no debconf information