Bug#1120288: systemd coredump, not sure what triggered it.

[Bryan W]

Package: systemd
Version: 257.8-1~deb13u2

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 at 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 at 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 at sfo3-01:/# ls -al core.178809 
-rw------- 1 root root 4947968 Nov  4 23:54 core.178809
root at sfo3-01:/# lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 13 (trixie)
Release:	13
Codename:	trixie
root at 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

-Bryan