You have been subscribed to a public bug: Description: Ubuntu 18.04.1 LTS Release: 18.04
In a fresh Ubuntu 18.04.1 install, after having set up NIS for connecting to my company's network, I noticed several problems happening when I tried to log in with my NIS user account. Initially logged in with a local user, I set up NIS client, and confirmed that NIS queries were OK, and then I tried to "ssh my_nis_acct@localhost", which hanged for a while, and them my X session crashed. Attempts to log in on the text console produced the following behavior: after typing in the password and getting some session-related messages, the login process hanged for 25 seconds, during which the machine became pretty much unusable, but then the login completed. However, a couple of minutes later, the X session of the local user (which was left open at tty1) suddenly died. That situation was consistently reproducible. Googling words related to the symptoms (most especially the 25-second hangs), I came across a bug report for Fedora, stating that the culprit would be nss_nis (cf. https://bugzilla.redhat.com/show_bug.cgi?id=1576558 and https://bodhi.fedoraproject.org/updates/FEDORA-2018-78f95660f9). As an workaround, I disabled pam_systemd.so in every PAM module that referred to it. Now I could login freely with NIS-based accounts, but lost the facilities of systemd-logind. After having has an idea about who the culprit was and managing to restore login for NIS-based users, I indeed saw messages in /var/log/syslog that showed at the time when systemd-logind crashed, indeed consistently preceded by another indicating something wrong related to some NIS query, such as shown in the excerpt below. ----------------------------- Sep 15 07:51:36 my-machine systemd-logind[26803]: do_ypcall: clnt_call: RPC: Unable to send; errno = Operation not permitted Sep 15 07:54:36 my-machine systemd[1]: systemd-logind.service: Watchdog timeout (limit 3min)! Sep 15 07:54:36 my-machine systemd[1]: systemd-logind.service: Killing process 26803 (systemd-logind) with signal SIGABRT. Sep 15 07:54:37 my-machine systemd[1]: systemd-logind.service: Main process exited, code=dumped, status=6/ABRT Sep 15 07:54:37 my-machine systemd[1]: systemd-logind.service: Failed with result 'watchdog'. Sep 15 07:54:37 my-machine systemd[1]: systemd-logind.service: Service has no hold-off time, scheduling restart. Sep 15 07:54:37 my-machine systemd[1]: systemd-logind.service: Scheduled restart job, restart counter is at 2. Sep 15 08:10:29 my-machine systemd-logind[1804]: do_ypcall: clnt_call: RPC: Unable to send; errno = Operation not permitted Sep 15 08:13:06 my-machine systemd[1]: systemd-logind.service: Watchdog timeout (limit 3min)! Sep 15 08:13:06 my-machine systemd[1]: systemd-logind.service: Killing process 1804 (systemd-logind) with signal SIGABRT. Sep 15 08:13:07 my-machine systemd[1]: systemd-logind.service: Main process exited, code=dumped, status=6/ABRT Sep 15 08:13:07 my-machine systemd[1]: systemd-logind.service: Failed with result 'watchdog'. Sep 15 08:13:07 my-machine systemd[1]: systemd-logind.service: Service has no hold-off time, scheduling restart. Sep 15 08:13:07 my-machine systemd[1]: systemd-logind.service: Scheduled restart job, restart counter is at 1. Sep 15 08:13:38 my-machine systemd-logind[7153]: do_ypcall: clnt_call: RPC: Unable to send; errno = Operation not permitted Sep 15 08:16:07 my-machine systemd[1]: systemd-logind.service: Watchdog timeout (limit 3min)! Sep 15 08:16:07 my-machine systemd[1]: systemd-logind.service: Killing process 7153 (systemd-logind) with signal SIGABRT. Sep 15 08:16:07 my-machine systemd[1]: systemd-logind.service: Main process exited, code=dumped, status=6/ABRT Sep 15 08:16:07 my-machine systemd[1]: systemd-logind.service: Failed with result 'watchdog'. Sep 15 08:16:07 my-machine systemd[1]: systemd-logind.service: Service has no hold-off time, scheduling restart. Sep 15 08:16:07 my-machine systemd[1]: systemd-logind.service: Scheduled restart job, restart counter is at 2. -------------------- I wonder if the fix that was applied in Fedora might work for Ubuntu as well. ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment -- systemd-logind crashes with NIS users https://bugs.launchpad.net/bugs/1793572 You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
