Bug#1142978: systemd: daemon-reload causes ABRT or mark newly started service as dead

[Georg Müller]

Package: systemd
Version: 257.13-1~deb13u1
Severity: normal
X-Debbugs-Cc: georgmueller at gmx.net

Dear Maintainer,

I ran into a problem by calling 'systemctl start ssh.service; systemctl enable ssh.service'.

My observation was that the ssh.service was in state 'inactive (dead)' even though
it was running. systemctl status still showed the correct MainPID and the process
in the cgroup.

This is reproducible (always resetted to a snapshot of a VM) in about 50% of my tries.

I once even ran into an ABRT in src/core/service.c service_sigchld_event() state switch,
pointing to an invalid state (default: assert_not_reached()), I unfortunately have
no backtrace of this.

The 'systemctl enable' command triggers a daemon-reload.

I think this is related to upstream bug https://github.com/systemd/systemd/pull/39703 .

ssh.service has alias sshd.service, which might be the cause of the problem.

This fix is backported to the upstream v258-stable branch and newer, but not to v257,
as this is probably too old.

I would like to have this patch added to the debian patches to fix the issue.

-- Package-specific info:

-- System Information:
Debian Release: 13.6
Architecture: amd64 (x86_64)

Kernel: Linux 7.0.12+deb13-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  libacl1            2.3.2-2+b1
ii  libapparmor1       4.1.0-1
ii  libc6              2.41-12+deb13u3
ii  libmount1          2.41-5
ii  libpam0g           1.7.0-5
ii  libseccomp2        2.6.0-2
ii  libselinux1        3.8.1-1
ii  libssl3t64         3.5.6-1~deb13u2
ii  libsystemd-shared  257.13-1~deb13u1
ii  libsystemd0        257.13-1~deb13u1
ii  mount              2.41-5

Versions of packages systemd recommends:
ii  dbus [default-dbus-system-bus]   1.16.2-2
ii  linux-sysctl-defaults            4.12.1
pn  systemd-cryptsetup               <none>
ii  systemd-timesyncd [time-daemon]  257.13-1~deb13u1

Versions of packages systemd suggests:
pn  libtss2-tcti-device0  <none>
pn  polkitd               <none>
pn  systemd-boot          <none>
pn  systemd-container     <none>
pn  systemd-homed         <none>
pn  systemd-repart        <none>
ii  systemd-resolved      257.13-1~deb13u1
pn  systemd-userdbd       <none>

Versions of packages systemd is related to:
pn  dbus-user-session  <none>
pn  dracut             <none>
ii  initramfs-tools    0.148.4
pn  libnss-systemd     <none>
ii  libpam-systemd     257.13-1~deb13u1
ii  udev               257.13-1~deb13u1

-- no debconf information