Bug#825853: gnome-session: Crash after 5 minutes after logging in

[Manuel Bilderbeek]

Package: gnome-session
Version: 3.20.1-2
Severity: important

Dear Maintainer,

I logged in after booting my "testing" machine and did nothing (had other stuff to do). When I came back, I noticed it was back on the login screen.

I saw this in the journalctl output:

mei 30 20:42:18 sonata systemd[1]: Started Session c3 of user Debian-gdm.
mei 30 20:42:18 sonata systemd[2340]: Reached target Sockets.
mei 30 20:42:18 sonata systemd[2340]: Reached target Paths.
mei 30 20:42:18 sonata systemd[2340]: Reached target Timers.
mei 30 20:42:18 sonata systemd[2340]: Reached target Basic System.
mei 30 20:42:18 sonata systemd[2340]: Reached target Default.
mei 30 20:42:18 sonata systemd[2340]: Startup finished in 13ms.
mei 30 20:42:18 sonata systemd[1]: Started User Manager for UID 116.
mei 30 20:42:18 sonata kernel: gnome-shell[2357]: segfault at 0 ip           (null) sp 00007ffc334e6dc8 error 14 in gnome-shell[400000+4000]
mei 30 20:42:18 sonata gnome-session[2349]: gnome-session-binary[2349]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11
mei 30 20:42:18 sonata gnome-session-binary[2349]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11
mei 30 20:42:18 sonata gnome-session-binary[2349]: Unrecoverable failure in required component org.gnome.Shell.desktop
mei 30 20:42:18 sonata gdm-launch-environment][2329]: pam_unix(gdm-launch-environment:session): session closed for user Debian-gdm
mei 30 20:42:18 sonata gdm3[650]: GdmDisplay: display lasted 0.367717 seconds
mei 30 20:42:18 sonata systemd[1]: Stopped Session c3 of user Debian-gdm.
mei 30 20:42:18 sonata systemd-logind[516]: Removed session c3.
mei 30 20:42:18 sonata systemd[1]: Stopping User Manager for UID 116...
mei 30 20:42:18 sonata systemd[2340]: Stopped target Default.
mei 30 20:42:18 sonata systemd[2340]: Stopped target Basic System.
mei 30 20:42:18 sonata gdm3[650]: Child process -2346 was already dead.
mei 30 20:42:18 sonata systemd[2340]: Stopped target Paths.
mei 30 20:42:18 sonata gdm3[650]: Child process 2329 was already dead.
mei 30 20:42:18 sonata systemd[2340]: Stopped target Timers.
mei 30 20:42:18 sonata gdm3[650]: Unable to kill session worker process
mei 30 20:42:18 sonata systemd[2340]: Stopped target Sockets.
mei 30 20:42:18 sonata systemd[2340]: Reached target Shutdown.
mei 30 20:42:18 sonata systemd[2340]: Starting Exit the Session...
mei 30 20:42:18 sonata systemd[2340]: Received SIGRTMIN+24 from PID 2370 (kill).
mei 30 20:42:18 sonata systemd[2343]: pam_unix(systemd-user:session): session closed for user Debian-gdm
mei 30 20:42:18 sonata systemd[1]: Stopped User Manager for UID 116.

etc.

Main point is that line:
mei 30 20:42:18 sonata kernel: gnome-shell[2357]: segfault at 0 ip           (null) sp 00007ffc334e6dc8 error 14 in gnome-shell[400000+4000]
mei 30 20:42:18 sonata gnome-session[2349]: gnome-session-binary[2349]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11
mei 30 20:42:18 sonata gnome-session-binary[2349]: WARNING: Application 'org.gnome.Shell.desktop' killed by signal 11
mei 30 20:42:18 sonata gnome-session-binary[2349]: Unrecoverable failure in required component org.gnome.Shell.desktop

Is there any extra information I can provide?

-- System Information:
Debian Release: stretch/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.5.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gnome-session depends on:
ii  gnome-session-bin      3.20.1-2
ii  gnome-session-common   3.20.1-2
ii  gnome-settings-daemon  3.20.1-1
ii  gnome-shell            3.20.2-1

gnome-session recommends no packages.

Versions of packages gnome-session suggests:
ii  desktop-base      8.0.2
ii  gnome-keyring     3.20.0-1
ii  gnome-user-guide  3.20.2-1

-- no debconf information