Bug#918764: udev: "udevadm control --reload-rules" kills all processes except init

[Nicolas Cavallari]

Package: udev
Version: 240-5
Followup-For: Bug #918764

I do not have cgroupsfs-mount installed, but i have elogind.
It apparently mounts /sys/fs/cgroup/unified, so this is enough for
udev to think it is under systemd.

A typical /proc/self/cgroup is :

1:name=elogind:/
0::/

So it is my understanding from the source code that manager->cgroup
should contain '/'.

A debugging session breaking on on_post() very unhelpfully indicates
that 'manager', 'manager->cgroup', 'userdata' and other helpful
variables have been optimized out...

(I only use elogind to satisfy the overly broad dependencies of
 libpolkit-qt5-1-1, but that is another bug, #794537).

-- Package-specific info:

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'oldoldstable'), (500, 'unstable'), (500, 'oldstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-2-amd64 (SMP w/2 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to fr_FR.UTF-8), LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8) (ignored: LC_ALL set to fr_FR.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled

Versions of packages udev depends on:
ii  adduser      3.118
ii  libacl1      2.2.52-3+b1
ii  libblkid1    2.33.1-0.1
ii  libc6        2.28-5
ii  libkmod2     25-2
ii  libselinux1  2.8-1+b1
ii  libudev1     240-5
ii  lsb-base     10.2018112800
ii  util-linux   2.33.1-0.1

udev recommends no packages.

udev suggests no packages.

Versions of packages udev is related to:
pn  systemd  <none>

-- Configuration Files:
/etc/init.d/udev changed [not included]
/etc/udev/udev.conf changed [not included]

-- debconf information excluded