Public bug reported: I regularly (once almost every hour) get segfaults resported in systemd- resolved. The syslog is not always the same:
Dec 21 06:59:21 marshall kernel: [988042.071003] systemd-resolve[15794]: segfault at e60e8ad514 ip 000000e60e8ad514 sp 00007ffe0376e748 error 14 in systemd-resolved[556f74bcf000+59000] Dec 21 06:59:21 marshall systemd[1]: systemd-resolved.service: Main process exited, code=dumped, status=11/SEGV Dec 21 06:59:21 marshall systemd[1]: systemd-resolved.service: Failed with result 'core-dump'. Dec 21 08:17:47 marshall kernel: [992748.334333] systemd-resolve[16943]: segfault at 2a11d9b0 ip 00007f4810f5ad26 sp 00007fff544db0f0 error 4 in libsystemd-shared-237.so[7f4810e1f000+1b5000] Dec 21 08:17:47 marshall systemd[1]: systemd-resolved.service: Main process exited, code=dumped, status=11/SEGV Dec 21 08:17:47 marshall systemd[1]: systemd-resolved.service: Failed with result 'core-dump'. Dec 21 06:22:45 marshall systemd-resolved[15727]: Assertion 'p->n_ref > 0' failed at ../src/resolve/resolved-dns-packet.c:210, function dns_packet_unref(). Aborting. Dec 21 06:22:45 marshall systemd[1]: systemd-resolved.service: Main process exited, code=dumped, status=6/ABRT Dec 21 06:22:45 marshall systemd[1]: systemd-resolved.service: Failed with result 'core-dump'. Dec 21 06:17:46 marshall systemd-resolved[15662]: Assertion 'DNS_TRANSACTION_IS_LIVE(q->state)' failed at ../src/resolve/resolved-dns-query.c:540, function dns_query_complete(). Aborting. Dec 21 06:17:46 marshall systemd[1]: systemd-resolved.service: Main process exited, code=dumped, status=6/ABRT Dec 21 06:17:46 marshall systemd[1]: systemd-resolved.service: Failed with result 'core-dump'. The system in question uses dnsmasq as local DNS server. Logging that is probably unrelated, but often seen (possibly due to the setup with dnsmasq) is: dec 21 10:22:00 marshall systemd-resolved[3183]: Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP. dec 21 10:17:15 marshall systemd-resolved[3183]: Using degraded feature set (TCP) for DNS server 127.0.0.1. # dpkg --status systemd Package: systemd Installed-Size: 12444 Maintainer: Ubuntu Developers <ubuntu-devel-disc...@lists.ubuntu.com> Architecture: amd64 Multi-Arch: foreign Version: 237-3ubuntu10.9 ** Affects: systemd (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1809438 Title: systemd-resolved segfaults To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1809438/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs