Bug#780675: systemd: segfault in systemd when running systemctl daemon-reload

[Robert Pumphrey]

Package: systemd
Version: 215-12
Severity: critical
Justification: breaks the whole system

Dear Maintainer,

running systemctl daemon-reload causes systemd to segfault :

root at host:~# systemctl daemon-reload

Message from syslogd at host at Mar 17 16:41:53 ...
 kernel:[  758.716467] systemd[1]: segfault at 7f8d3e4422a0 ip 00007f8d3e4422a0 sp 00007ffd3c533458 error 15
Failed to execute operation: Connection reset by peer

I have disabled as many services as possible, but still get the error.
I have not been able to reproduce on another machine
I have not been able to change the settings on this machine to allow daemon-reload to work

Once the segfault happens, systemd not longer responsds to systemctl status
Unable to get systemd back into a state where it will respond to systemctl status without a reboot

This has been triggered by attempting to upgrade some packages (eg. sudo) whose postrm script calls systemctl --system daemon-reload

-- Package-specific info:

-- System Information:
Debian Release: 8.0
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/12 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  acl             2.2.52-2
ii  adduser         3.113+nmu3
ii  initscripts     2.88dsf-58
ii  libacl1         2.2.52-2
ii  libaudit1       1:2.4-1+b1
ii  libblkid1       2.25.2-5
ii  libc6           2.19-15
ii  libcap2         1:2.24-6
ii  libcap2-bin     1:2.24-6
ii  libcryptsetup4  2:1.6.6-5
ii  libgcrypt20     1.6.2-4+b1
ii  libkmod2        18-3
ii  liblzma5        5.1.1alpha+20120614-2+b3
ii  libpam0g        1.1.8-3.1
ii  libselinux1     2.3-2
ii  libsystemd0     215-12
ii  mount           2.25.2-5
ii  sysv-rc         2.88dsf-58
ii  udev            215-12
ii  util-linux      2.25.2-5

Versions of packages systemd recommends:
ii  dbus            1.8.16-1
ii  libpam-systemd  215-12

Versions of packages systemd suggests:
pn  systemd-ui  <none>

-- no debconf information