Hi Serge, Attached are upstart session job output and cgmanager output showing "good" (desktop utopic in kvm) and "bad" (device) runs:
Note the following: - The session init in both cases is making the call on cgmanager as a non-priv user in an identical way: cgmanager_create_sync(controller='freezer', path='upstart_cgroup') - However, once that gets across the wire, we have differences: The good run shows: do_create_main:263: controller='freezer', cgroup='upstart_cgroup', ucred p=(pid=2948, uid=1000, gid=1000), ucred r=(pid=2948, uid=1000, gid=1000) do_create_main:318: r.pid=2948, r.uid=1000, r.gid=1000, dirpath='/run/cgmanager/fs/freezer/user.slice/user-1000.slice/session-c2.scope' The bad run shows: do_create_main:263: controller='freezer', cgroup='upstart_cgroup', ucred p=(pid=638, uid=0, gid=0), ucred r=(pid=3554, uid=32011, gid=32011) do_create_main:318: r.pid=3554, r.uid=32011, r.gid=32011, dirpath='/run/cgmanager/fs/freezer' = Differences = == Path == As you picked up previously, upstart never requested that cgmanager create '/run/cgmanager/fs/freezer', but for some reason that's the request that arrives. The correct path should be '/run/cgmanager/fs/freezer/user.slice/user-1000.slice/session-c2.scope' == uid == Bad run shows "uid=0" and "gid=0" - this looks incorrect. = Possible culprits = == cgproxy == This is running on the device along with cgmanager since the kernel version is 3.4.67. However, even when running in debug mode, the entire contents of /var/log/upstart/cgproxy.log is: -------------------- Connection from private client Create: Client fd is: 8 (pid=3554, uid=32011, gid=32011) cgmanager_create: returning -1; existed is -1 Disconnected from private client -------------------- == Other possibilities == - kernel - logind? ** Attachment added: "bug-1357252-upstart+cgmanager-logs-20140820.tgz" https://bugs.launchpad.net/ubuntu-app-launch/+bug/1357252/+attachment/4182419/+files/bug-1357252-upstart%2Bcgmanager-logs-20140820.tgz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1357252 Title: Upstart jobs specifying cgroup fail to start occasionally To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-app-launch/+bug/1357252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs