Confirming the same regression at a second site, on a server rather than a desktop. It is a Plesk shared-hosting box on Ubuntu 20.04.6 LTS with Ubuntu Pro, running on AWS EC2 (m7a.large, AMD EPYC), so different hardware and a very different workload.
245.4-4ubuntu3.24+esm4 was installed on 2 September and PID 1 segfaulted three times over the following four days, across two different kernels. Our third crash faults at offset 0x7DEF9 into the systemd binary, which is the same offset as the original reporter's second crash (ip 000055dedbb3def9 in systemd[55dedbac0000+bf000]). Same byte, on an entirely different machine. Downgrading to +esm3 and pinning has held here since 7 September with no recurrence, so the interim advice matches our experience. Worth noting for other server operators finding this: the failure is quiet. PID 1 survives with its D-Bus interface dead, so nothing reboots, processes started before the crash keep running, and static files carry on serving normally while anything needing a new session or cgroup placement fails: SSH logins hang after authenticating, and dynamic requests time out. Cloud provider status checks and HTTP checks against a static path stay green throughout, so nothing external registers a fault. The machine does not recover on its own either; it stays in that state until someone reboots it manually. We kept the apport report and core from the third crash. We also have fuller notes: per-crash timings, log counts either side of each segfault, and a possible lead in the upstream commit history around the backported patch. Happy to post any of that here, or supply the core privately to Canonical, if it would be useful. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2166539 Title: systemd 245.4-4ubuntu3.24+esm4 crashes repeatedly and with increasing frequency after upgrade from +esm3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-pro/+bug/2166539/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
