** Changed in: systemd (Debian)
Status: Unknown => New
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https://bugs.launchpad.net/bugs/1915936
Title:
systemd-coredump user is created by something other than its derived
systemd packages
Status in systemd package in Ubuntu:
New
Status in systemd source package in Bionic:
New
Status in systemd source package in Focal:
New
Status in systemd source package in Groovy:
New
Status in systemd source package in Hirsute:
New
Status in systemd package in Debian:
New
Bug description:
systemd-coredump binary package is instructed as follows:
#debian/systemd-coredump.postinst:
adduser --quiet --system --group --no-create-home --home /run/systemd \
--gecos "systemd Core Dumper" systemd-coredump
But one doesn't need this package to be installed to have the systemd-
coredump user created. This was taken from a focal 20.04.2 fresh
installation (Right after a vanilla installation):
# cat /etc/passwd:
...
systemd-coredump:x:999:999:systemd Core Dumper:/:/usr/sbin/nologin
...
# dpkg -l | grep -i systemd
ii dbus-user-session 1.12.16-2ubuntu2.1
amd64 simple interprocess messaging system (systemd --user integration)
ii libnss-systemd:amd64 245.4-4ubuntu3.4
amd64 nss module providing dynamic user and group name resolution
ii libpam-systemd:amd64 245.4-4ubuntu3.4
amd64 system and service manager - PAM module
ii libsystemd0:amd64 245.4-4ubuntu3.4
amd64 systemd utility library
ii networkd-dispatcher 2.0.1-1
all Dispatcher service for systemd-networkd connection status changes
ii python3-systemd 234-3build2
amd64 Python 3 bindings for systemd
ii systemd 245.4-4ubuntu3.4
amd64 system and service manager
ii systemd-sysv 245.4-4ubuntu3.4
amd64 system and service manager - SysV links
ii systemd-timesyncd 245.4-4ubuntu3.4
amd64 minimalistic service to synchronize local time with NTP servers
# /var/log/syslog
syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating group
systemd-coredump with gid 999.
syslog:Feb 17 15:31:56 test systemd-sysusers[402]: Creating user
systemd-coredump (systemd Core Dumper) with uid 999 and gid 999.
Additionnally, you may notice the home directory during the user creation at
installation sets it to "/" as opposed to "/run/systemd" directive in the
appropriate postint. It is contradictory.
* Why systemd-coredump user is created at installation time and/or without
'systemd-coredump' package installed ?
* Why this early creation set the home directory to "/" ?
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