The only reference I found to get_tasks_recursive seems far away in cgmanager (http://changelogs.ubuntu.com/changelogs/pool/main/c/cgmanager/cgmanager_0.32-4ubuntu1.1/changelog and https://linuxcontainers.org/it/cgmanager/manpages/man1/cgm.1.html)
Yet I found that my Xenial Test system didn't show the issue, while Michael before mentioned it did for him. I realized that this Xenial System had no cgmanager installed. So I installed full lxd (which is what usually brings cgmanager to your system) and e voila I was able to reproduce the issue on Xenial as well now. The output is slightly different (more and repeated on Xenial) Trusty call to get_tasks_recursive failed: Invalid arguments received in reply Xenial call to remove-on-empty (freezer:0) failed: invalid request call to get_tasks_recursive failed: Invalid arguments received in reply call to get_tasks_recursive failed: Invalid arguments received in reply I removed lxd and all its dependencies again and only installed cgmanager on the Xenial system. This pulls in libcgmanager0 and libnih-dbus1 as well, but nothing else. With those installed the issue does not yet appear, so it seems to need more of these packages to actually trigger. I tried to separate the lxd dependencies and found that libpam-cgm, likely to hook from pam (which is what su uses) into cgmanager. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to shadow in Ubuntu. https://bugs.launchpad.net/bugs/1534090 Title: 'call to get_tasks_recursive failed' errors from su Status in shadow package in Ubuntu: Confirmed Bug description: In Ubuntu 14.04 all of a sudden I'm seeing these two error messages coming up every time I use su -, whether in a script or interactive shell: call to remove-on-empty (freezer:0) failed: invalid request call to get_tasks_recursive failed: Invalid arguments received in reply Example and how to reproduce: root@localhost:~# su - test "echo hello" call to remove-on-empty (freezer:0) failed: invalid request -su: echo hello: No such file or directory call to get_tasks_recursive failed: Invalid arguments received in reply call to get_tasks_recursive failed: Invalid arguments received in reply root@localhost:~# su - test call to remove-on-empty (freezer:0) failed: invalid request test@localhost:~$ This only seems to affect Ubuntu 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1534090/+subscriptions -- 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
