Package: systemd Version: 239-5 Severity: important I noticed journald dumped core several times on this system.
Unfortunately, I didn't notice earlier as these are obviously not logged on the journal and coredumpctl fails to report them. Nice. [ 6840.048179] systemd-coredump[7546]: MESSAGE=Process 418 (systemd-journal) of user 0 dumped core. [ 6840.048185] systemd-coredump[7546]: Coredump diverted to /var/lib/systemd/coredump/core.systemd-journal.0.e13febf27eb6481eb4b017aeba831de4.418.1530998547000000.lz4 [ 6840.048188] systemd-coredump[7546]: Stack trace of thread 418: [ 6840.048190] systemd-coredump[7546]: #0 0x00007f1e5b58a420 n/a (libsystemd-shared-239.so) [ 6840.048193] systemd-coredump[7546]: #1 0x00007f1e5b58bb42 internal_hashmap_iterate (libsystemd-shared-239.so) [ 6840.048195] systemd-coredump[7546]: #2 0x0000558f32563812 n/a (systemd-journald) [ 6840.048197] systemd-coredump[7546]: #3 0x00007f1e5b74aa87 __libc_start_main (libc.so.6) [ 6840.048199] systemd-coredump[7546]: #4 0x0000558f32565a7a n/a (systemd-journald)` backtrace: [New LWP 418] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `/lib/systemd/systemd-journald'. Program terminated with signal SIGABRT, Aborted. #0 storage_ptr () at ../src/basic/hashmap.c:326 #1 bucket_at () at ../src/basic/hashmap.c:374 #2 ordered_bucket_at () at ../src/basic/hashmap.c:382 #3 hashmap_iterate_in_insertion_order (i=0x7fff2163f530, h=0x558f33fc7078) at ../src/basic/hashmap.c:589 #4 hashmap_iterate_entry (h=h@entry=0x558f33fc7078, i=0x7fff2163f530) at ../src/basic/hashmap.c:703 #5 0x00007f1e5b58bb42 in internal_hashmap_iterate (h=<optimized out>, i=<optimized out>, value=<optimized out>, key=<optimized out>, key=<optimized out>, value=<optimized out>) at ../src/basic/hashmap.c:711 #6 0x0000558f32563812 in ordered_hashmap_iterate () at ../src/basic/hashmap.h:259 #7 server_maybe_append_tags (s=0x7fff2163f5d0) at ../src/journal/journald-server.c:1891 #8 main (argc=<optimized out>, argv=<optimized out>) at ../src/journal/journald.c:98 -- Package-specific info: -- System Information: Debian Release: buster/sid APT prefers unstable APT policy: (900, 'unstable'), (800, 'experimental'), (500, 'unstable-debug') Architecture: amd64 (x86_64) Kernel: Linux 4.17.0-1-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages systemd depends on: ii adduser 3.117 ii libacl1 2.2.52-3+b1 ii libapparmor1 2.12-4+b1 ii libaudit1 1:2.8.3-1+b1 ii libblkid1 2.32-0.1 ii libc6 2.27-3 ii libcap2 1:2.25-1.2 ii libcryptsetup12 2:2.0.3-5 ii libgcrypt20 1.8.3-1 ii libgnutls30 3.5.18-1 ii libgpg-error0 1.31-1 ii libidn11 1.33-2.2 ii libip4tc0 1.6.2-1 ii libkmod2 25-1 ii liblz4-1 1.8.2-1 ii liblzma5 5.2.2-1.3 ii libmount1 2.32-0.1 ii libpam0g 1.1.8-3.7 ii libseccomp2 2.3.3-3 ii libselinux1 2.8-1+b1 ii libsystemd0 239-5 ii mount 2.32-0.1 ii procps 2:3.3.15-2 ii util-linux 2.32-0.1 Versions of packages systemd recommends: ii dbus 1.12.8-3 ii libpam-systemd 239-5 Versions of packages systemd suggests: ii policykit-1 0.105-20 ii systemd-container 239-5 Versions of packages systemd is related to: pn dracut <none> ii initramfs-tools 0.130 ii udev 239-5 -- Configuration Files: /etc/systemd/journald.conf changed: [Journal] Storage=persistent MaxRetentionSec=3month MaxFileSec=1week /etc/systemd/logind.conf changed: [Login] KillUserProcesses=no