#0  0x00007f31d1038f79 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
        resultvar = 0
        pid = 5510
        selftid = 5510
#1  0x00007f31d103c388 in __GI_abort () at abort.c:89
        save_stage = 2
        act = {__sigaction_handler = {sa_handler = 0x7fff94bb5ad0, sa_sigaction = 0x7fff94bb5ad0}, sa_mask = {__val = {39256336, 0, 4266916, 39246032, 39246128, 0, 0, 39246129, 139851947228036, 39256336, 6291456, 131180, 17021243437633887744, 0, 4267347, 568}}, sa_flags = 4267920, sa_restorer = 0x0}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x000000000040b083 in log_assert (text=text@entry=0x411ba4 "controller", file=file@entry=0x411d53 "../src/shared/cgroup-util.c", line=line@entry=568, func=func@entry=0x411f90 <__PRETTY_FUNCTION__.9441> "normalize_controller", format=format@entry=0x4118c0 "Assertion '%s' failed at %s:%u, function %s(). Aborting.") at ../src/shared/log.c:695
        buffer = "Assertion 'controller' failed at ../src/shared/cgroup-util.c:568, function normalize_controller(). Aborting.", '\000' <repeats 1939 times>
#3  0x000000000040b660 in log_assert_failed (text=text@entry=0x411ba4 "controller", file=file@entry=0x411d53 "../src/shared/cgroup-util.c", line=line@entry=568, func=func@entry=0x411f90 <__PRETTY_FUNCTION__.9441> "normalize_controller") at ../src/shared/log.c:700
No locals.
#4  0x000000000040cd19 in normalize_controller (controller=0x0) at ../src/shared/cgroup-util.c:568
No locals.
#5  0x000000000040cecc in cg_enumerate_tasks (controller=0x0, path=0x2560f50 "/sys/fs/cgroup/systemd/user/1000.user/c2.session/user", _f=_f@entry=0x7fff94bb5bd8) at ../src/shared/cgroup-util.c:118
        fs = 0x0
        f = <optimized out>
        r = <optimized out>
        value = 0x0
        template = 0x0
        fd = <optimized out>
        __PRETTY_FUNCTION__ = "cg_enumerate_tasks"
#6  0x000000000040d09a in cg_is_empty (controller=<optimized out>, path=<optimized out>, ignore_self=false) at ../src/shared/cgroup-util.c:1090
        f = 0x0
        pid = 0
        self_pid = <optimized out>
        found = false
        r = <optimized out>
#7  0x000000000040d1f2 in cg_is_empty_recursive (controller=controller@entry=0x0, path=path@entry=0x2560f50 "/sys/fs/cgroup/systemd/user/1000.user/c2.session/user", ignore_self=ignore_self@entry=false) at ../src/shared/cgroup-util.c:1136
        d = 0x0
        fn = 0x2564ae0 "\004"
        r = <optimized out>
        children = 0x410ba1
        p1 = <optimized out>
        __PRETTY_FUNCTION__ = "cg_is_empty_recursive"
#8  0x000000000040c1cc in show_cgroup_by_path (path=0x2564140 "/sys/fs/cgroup/systemd/user/1000.user/c2.session", prefix=prefix@entry=0x40f1cf "\t\t  ", n_columns=n_columns@entry=123, kernel_threads=kernel_threads@entry=false, flags=flags@entry=(unknown: 0)) at ../src/shared/cgroup-show.c:178
        k = 0x2560f50 "/sys/fs/cgroup/systemd/user/1000.user/c2.session/user"
        fn = 0x2561100 "/sys/fs/cgroup/systemd/user/1000.user/c2.session"
        p1 = 0x0
        last = 0x0
        p2 = 0x0
        d = 0x2564ae0
        gn = 0x2561140 ""
        shown_pids = false
        r = <optimized out>
        __PRETTY_FUNCTION__ = "show_cgroup_by_path"
#9  0x000000000040c40f in show_cgroup (controller=controller@entry=0x2560320 "systemd", path=path@entry=0x25605e0 "/user/1000.user/c2.session", prefix=prefix@entry=0x40f1cf "\t\t  ", n_columns=n_columns@entry=123, kernel_threads=kernel_threads@entry=false, flags=flags@entry=(unknown: 0)) at ../src/shared/cgroup-show.c:236
        p = 0x2564140 "/sys/fs/cgroup/systemd/user/1000.user/c2.session"
        r = 0
        __PRETTY_FUNCTION__ = "show_cgroup"
#10 0x000000000040c48e in show_cgroup_and_extra (controller=0x2560320 "systemd", path=0x25605e0 "/user/1000.user/c2.session", prefix=prefix@entry=0x40f1cf "\t\t  ", n_columns=n_columns@entry=123, kernel_threads=kernel_threads@entry=false, extra_pids=extra_pids@entry=0x7fff94bb60d8, n_extra_pids=n_extra_pids@entry=1, flags=flags@entry=(unknown: 0)) at ../src/shared/cgroup-show.c:282
        r = <optimized out>
        __PRETTY_FUNCTION__ = "show_cgroup_and_extra"
#11 0x000000000040c6c1 in show_cgroup_and_extra_by_spec (spec=<optimized out>, prefix=prefix@entry=0x40f1cf "\t\t  ", n_columns=123, kernel_threads=kernel_threads@entry=false, extra_pids=extra_pids@entry=0x7fff94bb60d8, n_extra_pids=1, flags=flags@entry=(unknown: 0)) at ../src/shared/cgroup-show.c:299
        controller = 0x2560320 "systemd"
        path = 0x25605e0 "/user/1000.user/c2.session"
        r = 0
        __PRETTY_FUNCTION__ = "show_cgroup_and_extra_by_spec"
#12 0x00000000004059b4 in print_session_status_info (i=0x7fff94bb6070) at ../src/login/loginctl.c:392
        c = <optimized out>
        output_flags = 0
        s1 = <optimized out>
        since2 = "Thu 2014-04-03 09:25:30 BST\000\061\177\000\000l\016V\002\000\000\000\000\230\064"
        since1 = "1h 38min ago\000\000\000\000'\000\000\000\000\000\000\000\000M\242\321\061\177\000\000\030\000\000\000\000\000\000\000\060\000\000\000\060\000\000\000\320b\273\224\377\177\000\000\220\064V\002\000\000\000\000o\000\000\000\000\000\000\000\260\nV\002\000\000\000\000\300b\273\224\377\177\000\000\362\212\177\321\061\177\000\000\000\000\000\000\000\000\000\000(\000\000\000\060\000\000\000\200b\273\224\377\177\000\000\260a\273\224\377\177\000\000\000\003\034\177\025\004\000\001\000\021\023\032\377\022\017\027\000\377\000\000\000\000\000\000\310b\273\224\377\177\000\000\000\000\000\000\000\000\000\000\220\aV\002\000\000\000\000\000-\000\000\005\030\000\000\000\000\000\000\000\000\000\000\240:<\321\061\177\000\000\000\000\000\000\000\000\000\000\240:<\321\061\177\000\000\215q@", '\000' <repeats 13 times>"\301, |@\000\000\000\000\000\206"...
        s2 = <optimized out>
#13 show_one (verb=<optimized out>, bus=bus@entry=0x2560ab0, path=<optimized out>, show_properties=show_properties@entry=false, new_line=new_line@entry=0x7fff94bb62b7) at ../src/login/loginctl.c:916
        reply = 0x2563ab0
        interface = 0x4107f3 ""
        r = <optimized out>
        iter = {dummy1 = 0x2563ab0, dummy2 = 0x600000, dummy3 = 2495303276, dummy4 = 32767, dummy5 = 39205560, dummy6 = 0, dummy7 = 45, dummy8 = 0, dummy9 = 39205632, dummy10 = 0, dummy11 = 0, pad1 = 0, pad2 = -777892608, pad3 = 0x7fff94bb5f20}
        sub = {dummy1 = 0x2563ab0, dummy2 = 0x600000, dummy3 = 2495301740, dummy4 = 32767, dummy5 = 39205560, dummy6 = 0, dummy7 = 50, dummy8 = 0, dummy9 = 39205632, dummy10 = 0, dummy11 = 862, pad1 = 0, pad2 = -777892992, pad3 = 0x7fff00000008}
        sub2 = {dummy1 = 0x2563ab0, dummy2 = 0x600000, dummy3 = 2495301740, dummy4 = 32767, dummy5 = 39205560, dummy6 = 0, dummy7 = 48, dummy8 = 0, dummy9 = 39205632, dummy10 = 0, dummy11 = 849, pad1 = 0, pad2 = -777892864, pad3 = 0x7fff00000008}
        sub3 = {dummy1 = 0x2563ab0, dummy2 = 0x600000, dummy3 = 2495301740, dummy4 = 32767, dummy5 = 39205632, dummy6 = 0, dummy7 = 850, dummy8 = 0, dummy9 = 39205632, dummy10 = 0, dummy11 = 852, pad1 = 0, pad2 = -777893120, pad3 = 0x7fff00000008}
        session_info = {id = 0x2563b88 "c2", uid = 1000, name = 0x2563ec8 "laney", timestamp = 1396513530809262, default_control_group = 0x2563bf8 "systemd:/user/1000.user/c2.session", vtnr = 7, seat = 0x2563c44 "seat0", tty = 0x0, display = 0x2563ca4 ":0", remote = false, remote_host = 0x0, remote_user = 0x0, service = 0x2563d14 "lightdm", leader = 2396, type = 0x2563d60 "x11", class = 0x2563d7c "user", state = 0x2563db4 "active"}
        user_info = {uid = 0, name = 0x0, timestamp = 0, default_control_group = 0x0, state = <optimized out>, sessions = <optimized out>, display = <optimized out>}
        seat_info = {id = 0x0, active_session = 0x0, sessions = 0x0}
        __PRETTY_FUNCTION__ = "show_one"
        __func__ = "show_one"
#14 0x0000000000406276 in show (bus=0x2560ab0, args=0x7fff94bb6490, n=<optimized out>) at ../src/login/loginctl.c:1017
        path = 0x25610a4 "/org/freedesktop/login1/session/c2"
        reply = 0x2563490
        r = <optimized out>
        ret = 0
        error = {name = 0x0, message = 0x0, dummy1 = 1, dummy2 = 0, dummy3 = 0, dummy4 = 0, dummy5 = 0, padding1 = 0x0}
        i = <optimized out>
        show_properties = false
        new_line = true
        __PRETTY_FUNCTION__ = "show"
        __func__ = "show"
#15 0x0000000000403b09 in loginctl_main (error=0x7fff94bb6350, argv=0x7fff94bb6488, argc=<optimized out>, bus=0x2560ab0) at ../src/login/loginctl.c:1543
        i = <optimized out>
        left = 2
        verbs = {{verb = 0x40f355 "list-sessions", argc_cmp = LESS, argc = 1, dispatch = 0x4043d0 <list_sessions>}, {verb = 0x40f363 "session-status", argc_cmp = MORE, argc = 2, dispatch = 0x406150 <show>}, {verb = 0x40f372 "show-session", argc_cmp = MORE, argc = 1, dispatch = 0x406150 <show>}, {verb = 0x40f37f "activate", argc_cmp = EQUAL, argc = 2, dispatch = 0x403d80 <activate>}, {verb = 0x40ee7a "lock-session", argc_cmp = MORE, argc = 2, dispatch = 0x403d80 <activate>}, {verb = 0x40ee78 "unlock-session", argc_cmp = MORE, argc = 2, dispatch = 0x403d80 <activate>}, {verb = 0x40f38a "lock-sessions", argc_cmp = EQUAL, argc = 1, dispatch = 0x4067c0 <lock_sessions>}, {verb = 0x40f388 "unlock-sessions", argc_cmp = EQUAL, argc = 1, dispatch = 0x4067c0 <lock_sessions>}, {verb = 0x40ee87 "terminate-session", argc_cmp = MORE, argc = 2, dispatch = 0x403d80 <activate>}, {verb = 0x40f398 "kill-session", argc_cmp = MORE, argc = 2, dispatch = 0x406510 <kill_session>}, {verb = 0x40f3a5 "list-users", argc_cmp = EQUAL, argc = 1, dispatch = 0x404130 <list_users>}, {verb = 0x40f3b0 "user-status", argc_cmp = MORE, argc = 2, dispatch = 0x406150 <show>}, {verb = 0x40f3bc "show-user", argc_cmp = MORE, argc = 1, dispatch = 0x406150 <show>}, {verb = 0x40efcc "enable-linger", argc_cmp = MORE, argc = 2, dispatch = 0x404940 <enable_linger>}, {verb = 0x40f3c6 "disable-linger", argc_cmp = MORE, argc = 2, dispatch = 0x404940 <enable_linger>}, {verb = 0x40f3d5 "terminate-user", argc_cmp = MORE, argc = 2, dispatch = 0x404820 <terminate_user>}, {verb = 0x40f3e4 "kill-user", argc_cmp = MORE, argc = 2, dispatch = 0x4046d0 <kill_user>}, {verb = 0x40f3ee "list-seats", argc_cmp = EQUAL, argc = 1, dispatch = 0x403ec0 <list_seats>}, {verb = 0x40f3f9 "seat-status", argc_cmp = MORE, argc = 2, dispatch = 0x406150 <show>}, {verb = 0x40f405 "show-seat", argc_cmp = MORE, argc = 1, dispatch = 0x406150 <show>}, {verb = 0x40f40f "attach", argc_cmp = MORE, argc = 3, dispatch = 0x4066a0 <attach>}, {verb = 0x40f416 "flush-devices", argc_cmp = EQUAL, argc = 1, dispatch = 0x406610 <flush_devices>}, {verb = 0x40f424 "terminate-seat", argc_cmp = MORE, argc = 2, dispatch = 0x406460 <terminate_seat>}}
#16 main (argc=<optimized out>, argv=0x7fff94bb6488) at ../src/login/loginctl.c:1574
        retval = 1
        bus = 0x2560ab0
        error = {name = 0x0, message = 0x0, dummy1 = 1, dummy2 = 1, dummy3 = 0, dummy4 = 0, dummy5 = 0, padding1 = 0x40eded <__libc_csu_init+77>}
        __PRETTY_FUNCTION__ = "main"