[Xfce-bugs] [Bug 16105] New: xfce4-session segfault on shutdown

bugzilla-daemon at xfce.org bugzilla-daemon at xfce.org
Wed Oct 30 23:15:40 CET 2019


https://bugzilla.xfce.org/show_bug.cgi?id=16105

            Bug ID: 16105
           Summary: xfce4-session segfault on shutdown
    Classification: Xfce Core
           Product: Xfce4-session
           Version: 4.14.0
          Hardware: PC (x86_64)
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Medium
         Component: General
          Assignee: xfce-bugs at xfce.org
          Reporter: liam at dark.ms
  Target Milestone: Xfce 4.14

I think it might trigger as I don't have a screensaver (I use physlock as a
locker) based on Thread 1 of the backtrace but I may be misreading it. The
segfault happens consistently when I quit X to shutdown. Full trace below:

Core was generated by `xfce4-session'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  g_type_check_instance_cast (type_instance=0x55c4be2833a0, iface_type=80) at
../glib-2.60.6/gobject/gtype.c:4057
4057    ../glib-2.60.6/gobject/gtype.c: No such file or directory.
[Current thread is 1 (Thread 0x7f566791b940 (LWP 2013))]
(gdb) thread apply all bt full

Thread 4 (Thread 0x7f5665e0e700 (LWP 2025)):
#0  0x00007f5669e0f633 in poll () at /lib64/libc.so.6
#1  0x00007f5669f7500e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x55c4be26f360, timeout=<optimized out>, context=0x55c4be270dc0)
at ../glib-2.60.6/glib/gmain.c:4228
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f5669f61270 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55c4be26f360
#2  0x00007f5669f7500e in g_main_context_iterate
(context=context at entry=0x55c4be270dc0, block=block at entry=1,
dispatch=dispatch at entry=1, self=<optimized out>) at
../glib-2.60.6/glib/gmain.c:3922
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = 1
        fds = 0x55c4be26f360
#3  0x00007f5669f750dc in g_main_context_iteration (context=0x55c4be270dc0,
may_block=may_block at entry=1) at ../glib-2.60.6/glib/gmain.c:3988
        retval = <optimized out>
#4  0x00007f5669f75121 in glib_worker_main (data=<optimized out>) at
../glib-2.60.6/glib/gmain.c:5868
#5  0x00007f5669f5104d in g_thread_proxy (data=0x55c4be0c6e80, data=<optimized
out>) at ../glib-2.60.6/glib/gthread.c:805
        thread = 0x55c4be0c6e80
        __FUNCTION__ = "g_thread_proxy"
#6  0x00007f5669eed458 in start_thread () at /lib64/libpthread.so.0
#7  0x00007f5669e1b6ef in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7f566660f700 (LWP 2024)):
#0  0x00007f5669ef40fc in pthread_cond_wait@@GLIBC_2.3.2 () at
/lib64/libpthread.so.0
#1  0x00007f5666a4be0b in  () at /usr/lib64/dri/i965_dri.so
#2  0x00007f5666a4ba37 in  () at /usr/lib64/dri/i965_dri.so
#3  0x00007f5669eed458 in start_thread () at /lib64/libpthread.so.0
#4  0x00007f5669e1b6ef in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7f56655ef700 (LWP 2026)):
#0  0x00007f566a054890 in param_spec_pool_equals (key_spec_1=0x55c4be26a940,
key_spec_2=0x7f56655eea90) at ../glib-2.60.6/gobject/gparam.c:893
        key1 = 0x55c4be26a940 [GParamBoolean]
        key2 = 0x7f56655eea90
#1  0x00007f5669f85cbb in g_hash_table_lookup_node (hash_return=<synthetic
pointer>, key=0x7f56655eea90, hash_table=0x55c4be0911e0 = {...}) at
../glib-2.60.6/glib/ghash.c:492
        node_key = <optimized out>
        node_hash = <optimized out>
        hash_value = 1062668395
        have_tombstone = 0
        step = 0
        node_index = 192
        first_tombstone = 0
        node_hash = 1062668395
        __FUNCTION__ = "g_hash_table_lookup"
#2  0x00007f5669f85cbb in g_hash_table_lookup (hash_table=0x55c4be0911e0 =
{...}, key=0x7f56655eea90, hash_table=<optimized out>, key=<optimized out>) at
../glib-2.60.6/glib/ghash.c:1507
        node_hash = 1062668395
        __FUNCTION__ = "g_hash_table_lookup"
#3  0x00007f566a05a603 in param_spec_ht_lookup (walk_ancestors=1,
owner_type=0x55c4be2709e0 [GTask], param_name=0x7f566a1b0d4a "completed",
hash_table=0x55c4be0911e0 = {...}) at ../glib-2.60.6/gobject/gparam.c:1003
        key = {g_type_instance = {g_class = <error reading variable: Cannot
access memory at address 0x30>}, name = 0x7f566a1b0d4a "completed", flags =
-1103085360, value_type = 0x39, owner_type = 0x55c4be2709e0 [GTask], _nick =
0x0, _blurb = 0x0, qdata = 0x7f5669f9624f <g_datalist_id_dup_data+111>,
ref_count = 3192655088, param_id = 21956}
        pspec = <optimized out>
        pspec = <optimized out>
        delim = <optimized out>
        __FUNCTION__ = "g_param_spec_pool_lookup"
#4  0x00007f566a05a603 in g_param_spec_pool_lookup (pool=0x55c4be0a31e0,
param_name=0x7f566a1b0d4a "completed", owner_type=0x55c4be2709e0 [GTask],
walk_ancestors=1) at ../glib-2.60.6/gobject/gparam.c:1076
        pspec = <optimized out>
        delim = <optimized out>
        __FUNCTION__ = "g_param_spec_pool_lookup"
#5  0x00007f566a061252 in g_object_notify (property_name=0x7f566a1b0d4a
"completed", object=0x7f565c003bd0 [GTask]) at
../glib-2.60.6/gobject/gobject.c:1218
--Type <RET> for more, q to quit, c to continue without paging--c
        pspec = <optimized out>
        __FUNCTION__ = "g_object_notify"
#6  0x00007f566a061252 in g_object_notify (object=0x7f565c003bd0 [GTask],
property_name=0x7f566a1b0d4a "completed", object=<optimized out>,
property_name=<optimized out>) at ../glib-2.60.6/gobject/gobject.c:1203
        __FUNCTION__ = "g_object_notify"
#7  0x00007f566a142c09 in g_task_return_now (task=0x7f565c003bd0 [GTask]) at
../glib-2.60.6/gio/gtask.c:1215
#8  0x00007f566a142c29 in complete_in_idle_cb (task=0x7f565c003bd0) at
../glib-2.60.6/gio/gtask.c:1223
#9  0x00007f5669f7307f in g_main_dispatch (context=0x55c4be280cb0) at
../glib-2.60.6/glib/gmain.c:3189
        dispatch = 0x7f5669f6d910 <g_idle_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7f565c003bd0
        callback = 0x7f566a142c20 <complete_in_idle_cb>
        cb_funcs = <optimized out>
        cb_data = 0x55c4be765ad0
        need_destroy = <optimized out>
        source = 0x7f565c00b390
        current = 0x7f565c002040
        i = 0
#10 0x00007f5669f7307f in g_main_context_dispatch
(context=context at entry=0x55c4be280cb0) at ../glib-2.60.6/glib/gmain.c:3854
#11 0x00007f5669f75098 in g_main_context_iterate (context=0x55c4be280cb0,
block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at
../glib-2.60.6/glib/gmain.c:3927
        max_priority = 0
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 3
        fds = 0x55c4be2826e0
#12 0x00007f5669f75fa2 in g_main_loop_run (loop=0x55c4be280da0) at
../glib-2.60.6/glib/gmain.c:4123
        __FUNCTION__ = "g_main_loop_run"
#13 0x00007f566a0e44d6 in gdbus_shared_thread_func (user_data=0x55c4be280c80)
at ../glib-2.60.6/gio/gdbusprivate.c:275
        data = 0x55c4be280c80
#14 0x00007f5669f5104d in g_thread_proxy (data=0x55c4be0c6f20, data=<optimized
out>) at ../glib-2.60.6/glib/gthread.c:805
        thread = 0x55c4be0c6f20
        __FUNCTION__ = "g_thread_proxy"
#15 0x00007f5669eed458 in start_thread () at /lib64/libpthread.so.0
#16 0x00007f5669e1b6ef in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7f566791b940 (LWP 2013)):
#0  0x00007f566a0403c0 in g_type_check_instance_cast
(type_instance=0x55c4be2833a0, iface_type=0x50 [GObject]) at
../glib-2.60.6/gobject/gtype.c:4057
        node = <optimized out>
        iface = <optimized out>
        is_instantiatable = <optimized out>
        check = <optimized out>
#1  0x000055c4bd96b1a5 in xfsm_consolekit_proxy_free (consolekit=0x55c4be283f60
[XfsmConsolekit]) at xfsm-consolekit.c:158
#2  0x000055c4bd96ed2c in xfsm_consolekit_finalize (object=0x55c4be283f60
[XfsmConsolekit]) at xfsm-consolekit.c:142
#3  0x00007f566a05ff5d in g_object_unref (_object=<optimized out>) at
../glib-2.60.6/gobject/gobject.c:3346
        weak_locations = <optimized out>
        old_ref = <optimized out>
        object = 0x55c4be283f60 [XfsmConsolekit]
        __FUNCTION__ = "g_object_unref"
#4  0x00007f566a05ff5d in g_object_unref (_object=0x55c4be283f60,
_object=<optimized out>) at ../glib-2.60.6/gobject/gobject.c:3238
        object = 0x55c4be283f60 [XfsmConsolekit]
        __FUNCTION__ = "g_object_unref"
#5  0x000055c4bd961ac2 in xfsm_shutdown_finalize (object=0x55c4be284350
[XfsmShutdown]) at xfsm-shutdown.c:149
        shutdown = 0x55c4be284350 [XfsmShutdown]
#6  0x00007f566a05ff5d in g_object_unref (_object=<optimized out>) at
../glib-2.60.6/gobject/gobject.c:3346
        weak_locations = <optimized out>
        old_ref = <optimized out>
        object = 0x55c4be284350 [XfsmShutdown]
        __FUNCTION__ = "g_object_unref"
#7  0x00007f566a05ff5d in g_object_unref (_object=0x55c4be284350,
_object=<optimized out>) at ../glib-2.60.6/gobject/gobject.c:3238
        object = 0x55c4be284350 [XfsmShutdown]
        __FUNCTION__ = "g_object_unref"
#8  0x000055c4bd969eb2 in xfsm_manager_finalize (obj=0x55c4be237400
[XfsmManager]) at xfsm-manager.c:206
        manager = 0x55c4be237400 [XfsmManager]
#9  0x00007f566a05ff5d in g_object_unref (_object=<optimized out>) at
../glib-2.60.6/gobject/gobject.c:3346
        weak_locations = <optimized out>
        old_ref = <optimized out>
        object = 0x55c4be237400 [XfsmManager]
        __FUNCTION__ = "g_object_unref"
#10 0x00007f566a05ff5d in g_object_unref (_object=0x55c4be237400,
_object=<optimized out>) at ../glib-2.60.6/gobject/gobject.c:3238
        object = 0x55c4be237400 [XfsmManager]
        __FUNCTION__ = "g_object_unref"
#11 0x00007f566a03fcd0 in g_value_unset (value=0x7ffea5964e20, value=<optimized
out>) at ../glib-2.60.6/gobject/gvalue.c:275
        value_table = <optimized out>
        __FUNCTION__ = "g_value_unset"
#12 0x00007f566a04fd2d in g_signal_emit_valist (instance=<optimized out>,
signal_id=<optimized out>, detail=<optimized out>,
var_args=var_args at entry=0x7ffea5964fd0) at
../glib-2.60.6/gobject/gsignal.c:3421
        instance_and_params = 0x7ffea5964e20
        signal_return_type = <optimized out>
        param_values = <optimized out>
        node = <optimized out>
        i = <optimized out>
        n_params = <optimized out>
        __FUNCTION__ = "g_signal_emit_valist"
#13 0x00007f566a050ea7 in g_signal_emit (instance=<optimized out>,
signal_id=<optimized out>, detail=<optimized out>) at
../glib-2.60.6/gobject/gsignal.c:3447
        var_args = {{gp_offset = 24, fp_offset = 48, overflow_arg_area =
0x7ffea59650b0, reg_save_area = 0x7ffea5964ff0}}
#14 0x000055c4bd976c17 in sm_close_connection (sms_conn=<optimized out>,
client_data=0x55c4be29c4d0, num_reasons=0, reasons=0x7f565c00d0f0) at
sm-layer.c:328
        client = 0x55c4be29c4d0 [XfsmClient]
        n = <optimized out>
        __func__ = "sm_close_connection"
#15 0x00007f566ad77c0a in _SmsProcessMessage () at /usr/lib64/libSM.so.6
#16 0x00007f566ad690c3 in IceProcessMessages () at /usr/lib64/libICE.so.6
#17 0x000055c4bd977981 in ice_process_messages (channel=<optimized out>,
condition=<optimized out>, user_data=0x55c4be6685f0, user_data=<optimized out>,
channel=<optimized out>, condition=<optimized out>) at ice-layer.c:111
        status = <optimized out>
        icdata = 0x55c4be6685f0
#18 0x00007f5669f7307f in g_main_dispatch (context=0x55c4be22d0f0) at
../glib-2.60.6/glib/gmain.c:3189
        dispatch = 0x7f5669f28d90 <g_io_unix_dispatch>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x55c4be6685f0
        callback = 0x55c4bd977970 <ice_process_messages>
        cb_funcs = <optimized out>
        cb_data = 0x55c4be503020
        need_destroy = <optimized out>
        source = 0x55c4be431180
        current = 0x55c4be281520
        i = 0
#19 0x00007f5669f7307f in g_main_context_dispatch
(context=context at entry=0x55c4be22d0f0) at ../glib-2.60.6/glib/gmain.c:3854
#20 0x00007f5669f75098 in g_main_context_iterate (context=0x55c4be22d0f0,
block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at
../glib-2.60.6/glib/gmain.c:3927
        max_priority = 2147483647
        timeout = 6994
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = 11
        fds = 0x55c4be3dfea0
#21 0x00007f5669f75fa2 in g_main_loop_run (loop=0x55c4be286f50) at
../glib-2.60.6/glib/gmain.c:4123
        __FUNCTION__ = "g_main_loop_run"
#22 0x00007f566a6d83ed in gtk_main () at /usr/lib64/libgtk-3.so.0
#23 0x000055c4bd95e3e0 in main (argc=<optimized out>, argv=<optimized out>) at
main.c:367

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