This is on a 1GB droplet in DigitalOcean. I noticed ssh into the droplet was very slow to respond. I ran dmesg and saw many connection to systemd issues.

I can dig up logs (if they exist) and provide core file if needed.

I then noticed a core file in /. Here is the coredump backtrace:
root@sfo3-01:/# file /core.178809
/core.178809: ELF 64-bit LSB core file, x86-64, version 1 (SYSV), SVR4-style, from '/sbin/init', real uid: 0, effective uid: 0, real gid: 0, effective gid: 0, execfn: '/sbin/init', platform: 'x86_64'
root@sfo3-01:/# gdb /usr/lib/systemd/systemd core.178809
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Reading symbols from /usr/lib/systemd/systemd...
(No debugging symbols found in /usr/lib/systemd/systemd)
[New LWP 178809]
[New LWP 1]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/sbin/init'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00007fc353918779 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
[Current thread is 1 (LWP 178809)]
(gdb) bt
#0  0x00007fc353918779 in syscall () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007fc353c20a75 in propagate_signal () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#2  0x00005564763f0f9b in ?? ()
#3  <signal handler called>
#4  0x00007fc35389e95c in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#5  0x00007fc353849cc2 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#6  0x00007fc3538324ac in abort () from /lib/x86_64-linux-gnu/libc.so.6
#7  0x00007fc353a97c11 in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#8  0x00007fc353bdbb8b in chase () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#9  0x00007fc353cc0196 in device_set_syspath () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#10 0x00007fc353cc096d in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#11 0x00007fc353cc3948 in device_new_from_mode_and_devnum ()
   from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#12 0x00007fc353cc3e78 in sd_device_new_from_devname () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#13 0x00007fc3540abc58 in device_found_node () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-core-257.so
#14 0x00007fc354103095 in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-core-257.so
#15 0x00007fc354103a80 in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-core-257.so
#16 0x00007fc353c7d3f1 in ?? () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#17 0x00007fc353c7d78d in sd_event_dispatch () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#18 0x00007fc353c805a8 in sd_event_run () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-shared-257.so
#19 0x00007fc3540f90ad in manager_loop () from /usr/lib/x86_64-linux-gnu/systemd/libsystemd-core-257.so
#20 0x00005564763e7b15 in ?? ()
#21 0x00007fc353833ca8 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#22 0x00007fc353833d65 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#23 0x00005564763ea8f1 in ?? ()
(gdb) quit
root@sfo3-01:/# ls -al core.178809
-rw------- 1 root root 4947968 Nov  4 23:54 core.178809
root@sfo3-01:/# lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 13 (trixie)
Release:	13
Codename:	trixie
root@sfo3-01:/# uname -a
Linux sfo3-01 6.12.48+deb13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.12.48-1 (2025-09-20) x86_64 GNU/Linux

Please install the dbgsym packages and decode the corefile again and
attach the result

Hello,

Even with trixie-proposed-updates-debug and trixie-proposed-updates added along with trivie-debug I can’t get libsystemd-shared-dbgsym or systemd-dbgsym 257.8-1~deb13u2.

So I guess the core file is useless.

If there is anything else I can try... I’ll do it. Thanks!

# cat /etc/apt/sources.list.d/debian-dbgsym.list
deb http://deb.debian.org/debian-debug/ trixie-debug main
deb http://deb.debian.org/debian-debug/ trixie-proposed-updates-debug main
# cat /etc/apt/sources.list.d/debian.sources
Types: deb deb-src
URIs: mirror+file:///etc/apt/mirrors/debian.list
Suites: trixie trixie-proposed-updates trixie-updates trixie-backports
Components: main
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

Types: deb deb-src
URIs: mirror+file:///etc/apt/mirrors/debian-security.list
Suites: trixie-security
Components: main
Signed-By: /usr/share/keyrings/debian-archive-keyring.gpg

# dpkg -s systemd | grep ^V
Version: 257.8-1~deb13u2
# apt install libsystemd-shared-dbgsym=257.8-1~deb13u2 systemd-dbgsym=257.8-1~deb13u2
Package libsystemd-shared-dbgsym is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Package systemd-dbgsym is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

Error: Version '257.8-1~deb13u2' for 'libsystemd-shared-dbgsym' was not found
Error: Version '257.8-1~deb13u2' for 'systemd-dbgsym' was not found