xfce4-power-manager-settings segfaults in g_type_check_instance due to upower's untimely auto removing USB UPS (maybe)
## Submitted by QDeKIFHFSzq4Uyvj7U
**[Link to original bug (#15387)](https://bugzilla.xfce.org/show_bug.cgi?id=15387)**
## Description
I'm on ArchLinux, when I plug in the Eaton 5E UPS via its USB cable I get some regular messages on `dmesg` like the following(3 consecutive groups of messages pasted):
```
[10066.771690] usb 1-14: USB disconnect, device number 51
[10067.789160] usb 1-14: new low-speed USB device number 52 using xhci_hcd
[10068.597520] usb 1-14: New USB device found, idVendor=0463, idProduct=ffff, bcdDevice= 0.01
[10068.597529] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[10068.597534] usb 1-14: Product: 5E
[10068.597538] usb 1-14: Manufacturer: EATON
[10070.557495] hid-generic 0003:0463:FFFF.00AF: hiddev1,hidraw4: USB HID v1.10 Device [EATON 5E] on usb-0000:00:14.0-14/input0
[10070.564706] mtp-probe[25628]: checking bus 1, device 52: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10070.565178] mtp-probe[25628]: bus: 1, device: 52 was not an MTP device
[10071.117785] mtp-probe[25648]: checking bus 1, device 52: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10071.118046] mtp-probe[25648]: bus: 1, device: 52 was not an MTP device
[10081.599240] hid-generic 0003:0463:FFFF.00AF: usb_submit_urb(ctrl) failed: -1
[10081.599286] hid-generic 0003:0463:FFFF.00AF: timeout initializing reports
[10087.112690] usb 1-14: USB disconnect, device number 52
[10088.119165] usb 1-14: new low-speed USB device number 53 using xhci_hcd
[10088.938971] usb 1-14: New USB device found, idVendor=0463, idProduct=ffff, bcdDevice= 0.01
[10088.938981] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[10088.938985] usb 1-14: Product: 5E
[10088.938989] usb 1-14: Manufacturer: EATON
[10090.898537] hid-generic 0003:0463:FFFF.00B0: hiddev1,hidraw4: USB HID v1.10 Device [EATON 5E] on usb-0000:00:14.0-14/input0
[10090.906960] mtp-probe[25675]: checking bus 1, device 53: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10090.907275] mtp-probe[25675]: bus: 1, device: 53 was not an MTP device
[10091.438318] mtp-probe[25695]: checking bus 1, device 53: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10091.438412] mtp-probe[25695]: bus: 1, device: 53 was not an MTP device
[10102.079289] hid-generic 0003:0463:FFFF.00B0: usb_submit_urb(ctrl) failed: -1
[10102.079333] hid-generic 0003:0463:FFFF.00B0: timeout initializing reports
[10107.433721] usb 1-14: USB disconnect, device number 53
[10108.489170] usb 1-14: new low-speed USB device number 54 using xhci_hcd
[10109.308649] usb 1-14: New USB device found, idVendor=0463, idProduct=ffff, bcdDevice= 0.01
[10109.308652] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[10109.308653] usb 1-14: Product: 5E
[10109.308654] usb 1-14: Manufacturer: EATON
[10110.059484] gpg-agent[1150]: handler 0x7fad4164e700 for fd 10 started
[10110.109349] gpg-agent[1150]: handler 0x7fad4164e700 for fd 10 terminated
[10111.268962] hid-generic 0003:0463:FFFF.00B1: hiddev1,hidraw4: USB HID v1.10 Device [EATON 5E] on usb-0000:00:14.0-14/input0
[10111.278632] mtp-probe[25723]: checking bus 1, device 54: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10111.279309] mtp-probe[25723]: bus: 1, device: 54 was not an MTP device
[10111.813049] mtp-probe[25743]: checking bus 1, device 54: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10111.813151] mtp-probe[25743]: bus: 1, device: 54 was not an MTP device
[10121.909290] hid-generic 0003:0463:FFFF.00B1: usb_submit_urb(ctrl) failed: -1
[10121.909352] hid-generic 0003:0463:FFFF.00B1: timeout initializing reports
```
Now, while all that is happening, if I run the following it coredumps:
```
$ /usr/bin/xfce4-power-manager-settings --debug
DBG[xfpm-settings-app.c:255] xfpm_settings_app_launch(): socket_id 0
DBG[xfpm-settings-app.c:256] xfpm_settings_app_launch(): device id (null)
TRACE[xfpm-settings.c:2365] xfpm_settings_dialog_new(): auth_hibernate=FALSE auth_suspend=TRUE can_shutdown=TRUE can_suspend=TRUE can_hibernate=TRUE has_battery=TRUE has_lcd_brightness=FALSE has_lid=FALSE has_sleep_button=TRUE has_hibernate_button=TRUE has_power_button=TRUE has_battery_button=TRUE
DBG[xfpm-settings.c:1883] update_device_info_value_for_name(): updating name Device with value ups_hiddev1
DBG[xfpm-settings.c:1883] update_device_info_value_for_name(): updating name Type with value Uninterruptible Power Supply
DBG[xfpm-settings.c:1883] update_device_info_value_for_name(): updating name PowerSupply with value True
DBG[xfpm-settings.c:1883] update_device_info_value_for_name(): updating name Technology with value Unknown
DBG[xfpm-settings.c:1883] update_device_info_value_for_name(): updating name Current charge with value 0%
DBG[xfpm-settings.c:1883] update_device_info_value_for_name(): updating name Vendor with value Eaton
TRACE[xfpm-power-common.c:190] get_device_icon_name(): icon_suffix -symbolic, icon_base_length 13, upower_icon battery-empty-symbolic
TRACE[xfpm-settings.c:1787] xfpm_settings_light_locker(): Schema "apps.light-locker" not found. Not configuring Light Locker.
Segmentation fault (core dumped)
```
here's the stacktrace:
```
$ coredumpctl gdb 20939
PID: 20939 (xfce4-power-man)
UID: 1000 (user)
GID: 1000 (user)
Signal: 11 (SEGV)
Timestamp: Fri 2019-05-10 23:56:02 CEST (23min ago)
Command Line: /usr/bin/xfce4-power-manager-settings --debug
Executable: /usr/bin/xfce4-power-manager-settings
Control Group: /user.slice/user-1000.slice/session-1.scope
Unit: session-1.scope
Slice: user-1000.slice
Session: 1
Owner UID: 1000 (user)
Boot ID: b98cb36dffa44d5598ed02b91e45758d
Machine ID: 5767ef25f523419aaa049f3d74481940
Hostname: i87k
Storage: /var/lib/systemd/coredump/core.xfce4-power-man.1000.b98cb36dffa44d5598ed02b91e45758d.20939.1557525362000000
Message: Process 20939 (xfce4-power-man) of user 1000 dumped core.
Stack trace of thread 20939:
#0 0x00007f3b3a5e30f9 g_type_check_instance (libgobject-2.0.so.0)
#1 0x00007f3b3a5f6edb g_signal_handler_disconnect (libgobject-2.0.so.0)
#2 0x000055a5c4029d9d remove_device (xfce4-power-manager-settings)
#3 0x00007f3b3a602225 g_closure_invoke (libgobject-2.0.so.0)
#4 0x00007f3b3a5ef83d signal_emit_unlocked_R (libgobject-2.0.so.0)
#5 0x00007f3b3a5f3c3e g_signal_emit_valist (libgobject-2.0.so.0)
#6 0x00007f3b3a5f4c77 g_signal_emit (libgobject-2.0.so.0)
#7 0x00007f3b3a6389d6 up_device_removed_cb (libupower-glib.so.3)
#8 0x00007f3b393416d0 ffi_call_unix64 (libffi.so.6)
#9 0x00007f3b393410a0 ffi_call (libffi.so.6)
#10 0x00007f3b3a60c569 g_cclosure_marshal_generic (libgobject-2.0.so.0)
#11 0x00007f3b3a602225 g_closure_invoke (libgobject-2.0.so.0)
#12 0x00007f3b3a5ef83d signal_emit_unlocked_R (libgobject-2.0.so.0)
#13 0x00007f3b3a5f6905 g_signal_emitv (libgobject-2.0.so.0)
#14 0x00007f3b3a63e0ee up_exported_daemon_proxy_g_signal (libupower-glib.so.3)
#15 0x00007f3b393416d0 ffi_call_unix64 (libffi.so.6)
#16 0x00007f3b393410a0 ffi_call (libffi.so.6)
#17 0x00007f3b3a60c569 g_cclosure_marshal_generic (libgobject-2.0.so.0)
#18 0x00007f3b3a602225 g_closure_invoke (libgobject-2.0.so.0)
#19 0x00007f3b3a5ef10f signal_emit_unlocked_R (libgobject-2.0.so.0)
#20 0x00007f3b3a5f3c3e g_signal_emit_valist (libgobject-2.0.so.0)
#21 0x00007f3b3a5f4c77 g_signal_emit (libgobject-2.0.so.0)
#22 0x00007f3b3a6c4ab9 on_signal_received (libgio-2.0.so.0)
#23 0x00007f3b3a6cc3a5 emit_signal_instance_in_idle_cb (libgio-2.0.so.0)
#24 0x00007f3b3a51ad69 g_main_dispatch (libglib-2.0.so.0)
#25 0x00007f3b3a51ce88 g_main_context_iterate (libglib-2.0.so.0)
#26 0x00007f3b3a51cecf g_main_context_iteration (libglib-2.0.so.0)
#27 0x00007f3b3a6fbd3d g_application_run (libgio-2.0.so.0)
#28 0x000055a5c40288ab main (xfce4-power-manager-settings)
#29 0x00007f3b3a1b6fab __libc_start_main (libc.so.6)
#30 0x000055a5c40270ce _start (xfce4-power-manager-settings)
Stack trace of thread 20940:
#0 0x00007f3b3a2891a6 __GI___poll (libc.so.6)
#1 0x00007f3b3a51cdfe g_main_context_poll (libglib-2.0.so.0)
#2 0x00007f3b3a51cecf g_main_context_iteration (libglib-2.0.so.0)
#3 0x00007f3b3a51cf21 glib_worker_main (libglib-2.0.so.0)
#4 0x00007f3b3a4f814e g_thread_proxy (libglib-2.0.so.0)
#5 0x00007f3b3a35f60a start_thread (libpthread.so.0)
#6 0x00007f3b3a293fe3 __clone (libc.so.6)
Stack trace of thread 20941:
#0 0x00007f3b3a2891a6 __GI___poll (libc.so.6)
#1 0x00007f3b3a51cdfe g_main_context_poll (libglib-2.0.so.0)
#2 0x00007f3b3a51ddd2 g_main_loop_run (libglib-2.0.so.0)
#3 0x00007f3b3a6b71de gdbus_shared_thread_func (libgio-2.0.so.0)
#4 0x00007f3b3a4f814e g_thread_proxy (libglib-2.0.so.0)
#5 0x00007f3b3a35f60a start_thread (libpthread.so.0)
#6 0x00007f3b3a293fe3 __clone (libc.so.6)
GNU gdb (GDB) 8.2.1
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License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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Reading symbols from /usr/bin/xfce4-power-manager-settings...done.
warning: core file may not match specified executable file.
[New LWP 20939]
[New LWP 20940]
[New LWP 20941]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/bin/xfce4-power-manager-settings --debug'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 g_type_check_instance (type_instance=<optimized out>, type_instance=<optimized out>) at ../glib/gobject/gtype.c:4131
4131 TypeNode *node = lookup_type_node_I (type_instance->g_class->g_type);
[Current thread is 1 (Thread 0x7f3b3891c980 (LWP 20939))]
(gdb) bt
#0 0x00007f3b3a5e30f9 in g_type_check_instance (type_instance=0x55a5c5a0d2b0, type_instance=<optimized out>) at ../glib/gobject/gtype.c:4131
#1 0x00007f3b3a5f6edb in g_signal_handler_disconnect (instance=0x55a5c5a0d2b0, handler_id=1103) at ../glib/gobject/gsignal.c:2627
#2 0x000055a5c4029d9d in remove_device (object_path=<optimized out>) at xfpm-settings.c:2226
#3 0x000055a5c4029d9d in device_removed_cb (upclient=<optimized out>, object_path=<optimized out>, user_data=<optimized out>) at xfpm-settings.c:2242
#7 0x00007f3b3a5f4c77 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3447
#4 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5b0f6c0, return_value=0x0, n_param_values=2, param_values=0x7fffa117a580, invocation_hint=0x7fffa117a500)
at ../glib/gobject/gclosure.c:810
#5 0x00007f3b3a5ef83d in signal_emit_unlocked_R
(node=node@entry=0x55a5c5b083a0, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac0100, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa117a580) at ../glib/gobject/gsignal.c:3635
#6 0x00007f3b3a5f3c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffa117a750)
at ../glib/gobject/gsignal.c:3391
#8 0x00007f3b3a6389d6 in up_device_removed_cb (proxy=<optimized out>, object_path=<optimized out>, client=<optimized out>) at up-client.c:320
#9 0x00007f3b393416d0 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#10 0x00007f3b393410a0 in ffi_call () at /usr/lib/libffi.so.6
#14 0x00007f3b3a5f6905 in Python Exception <class 'gdb.error'> There is no member named v_pointer.:
#15 0x00007f3b3a63e0ee in up_exported_daemon_proxy_g_signal
(proxy=<optimized out>, sender_name=<optimized out>, signal_name=<optimized out>, parameters=<optimized out>) at up-daemon-generated.c:1332
#16 0x00007f3b393416d0 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#17 0x00007f3b393410a0 in ffi_call () at /usr/lib/libffi.so.6
#22 0x00007f3b3a5f4c77 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at ../glib/gobject/gsignal.c:3447
#18 0x00007f3b3a60c569 in g_cclosure_marshal_generic
(closure=0x55a5c5770420, return_gvalue=0x0, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=<optimized out>)
at ../glib/gobject/gclosure.c:1500
#19 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5770420, return_value=0x0, n_param_values=4, param_values=0x7fffa117b260, invocation_hint=0x7fffa117b1e0)
at ../glib/gobject/gclosure.c:810
#20 0x00007f3b3a5ef10f in signal_emit_unlocked_R
(node=node@entry=0x55a5c5770450, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac2630, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa117b260) at ../glib/gobject/gsignal.c:3673
#21 0x00007f3b3a5f3c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffa117b460)
at ../glib/gobject/gsignal.c:3391
#23 0x00007f3b3a6c4ab9 in on_signal_received
(connection=<optimized out>, sender_name=0x7f3b2800f140 ":1.479", object_path=<optimized out>, interface_name=<optimized out>, signal_name=0x7f3b2800f1a0 "DeviceRemoved", parameters=0x55a5c5ab30a0, user_data=0x55a5c588bc20) at ../glib/gio/gdbusproxy.c:917
#24 0x00007f3b3a6cc3a5 in emit_signal_instance_in_idle_cb (data=0x7f3b2800c9a0) at ../glib/gio/gdbusconnection.c:3743
#25 0x00007f3b3a51ad69 in g_main_dispatch (context=0x55a5c5762850) at ../glib/glib/gmain.c:3189
#26 0x00007f3b3a51ad69 in g_main_context_dispatch (context=context@entry=0x55a5c5762850) at ../glib/glib/gmain.c:3854
#27 0x00007f3b3a51ce88 in g_main_context_iterate (context=context@entry=0x55a5c5762850, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
at ../glib/glib/gmain.c:3927
#28 0x00007f3b3a51cecf in g_main_context_iteration (context=0x55a5c5762850, may_block=1) at ../glib/glib/gmain.c:3988
#29 0x00007f3b3a6fbd3d in g_application_run (application=0x55a5c5761100, argc=<optimized out>, argv=0x7fffa117b848) at ../glib/gio/gapplication.c:2516
#30 0x000055a5c40288ab in main (argc=2, argv=0x7fffa117b848) at xfpm-settings-main.c:44
(gdb) frame 0
#0 g_type_check_instance (type_instance=<optimized out>, type_instance=<optimized out>) at ../glib/gobject/gtype.c:4131
4131 TypeNode *node = lookup_type_node_I (type_instance->g_class->g_type);
(gdb) frame 1
#1 0x00007f3b3a5f6edb in g_signal_handler_disconnect (instance=0x55a5c5a0d2b0, handler_id=1103) at ../glib/gobject/gsignal.c:2627
2627 g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
(gdb) frame 2
#2 0x000055a5c4029d9d in remove_device (object_path=<optimized out>) at xfpm-settings.c:2226
2226 g_signal_handler_disconnect (device, signal_id);
(gdb) frame 3
#3 device_removed_cb (upclient=<optimized out>, object_path=<optimized out>, user_data=<optimized out>) at xfpm-settings.c:2242
2242 remove_device (object_path);
(gdb) frame 4
#4 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5b0f6c0, return_value=0x0, n_param_values=2, param_values=0x7fffa117a580, invocation_hint=0x7fffa117a500)
at ../glib/gobject/gclosure.c:810
810 marshal (closure,
(gdb) frame 5
#5 0x00007f3b3a5ef83d in signal_emit_unlocked_R (node=node@entry=0x55a5c5b083a0, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac0100,
emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa117a580) at ../glib/gobject/gsignal.c:3635
3635 g_closure_invoke (handler->closure,
(gdb) frame 6
#6 0x00007f3b3a5f3c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffa117a750)
at ../glib/gobject/gsignal.c:3391
3391 signal_emit_unlocked_R (node, detail, instance, NULL, instance_and_params);
(gdb) frame 7
#7 0x00007f3b3a5f4c77 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3447
3447 g_signal_emit_valist (instance, signal_id, detail, var_args);
(gdb) frame 8
#8 0x00007f3b3a6389d6 in up_device_removed_cb (proxy=<optimized out>, object_path=<optimized out>, client=<optimized out>) at up-client.c:320
320 g_signal_emit (client, signals [UP_CLIENT_DEVICE_REMOVED], 0, object_path);
(gdb) frame 9
#9 0x00007f3b393416d0 in ffi_call_unix64 () from /usr/lib/libffi.so.6
(gdb) frame 10
#10 0x00007f3b393410a0 in ffi_call () from /usr/lib/libffi.so.6
(gdb) frame 11
#11 0x00007f3b3a60c569 in g_cclosure_marshal_generic (closure=0x55a5c5b0df80, return_gvalue=0x0, n_param_values=<optimized out>, param_values=<optimized out>,
invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../glib/gobject/gclosure.c:1500
1500 ffi_call (&cif, marshal_data ? marshal_data : cc->callback, rvalue, args);
(gdb) frame 12
#12 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5b0df80, return_value=0x0, n_param_values=2, param_values=0x55a5c585eb00, invocation_hint=0x7fffa117abf0)
at ../glib/gobject/gclosure.c:810
810 marshal (closure,
(gdb) frame 13
#13 0x00007f3b3a5ef83d in signal_emit_unlocked_R (node=node@entry=0x55a5c5affb50, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac2630,
emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x55a5c585eb00) at ../glib/gobject/gsignal.c:3635
3635 g_closure_invoke (handler->closure,
(gdb) frame 14
#14 0x00007f3b3a5f6905 in g_signal_emitv (instance_and_params=instance_and_params@entry=0x55a5c585eb00, signal_id=<optimized out>, detail=detail@entry=0,
return_value=return_value@entry=0x0) at ../glib/gobject/gsignal.c:3129
3129 signal_emit_unlocked_R (node, detail, instance, return_value, instance_and_params);
(gdb) frame 15
#15 0x00007f3b3a63e0ee in up_exported_daemon_proxy_g_signal (proxy=<optimized out>, sender_name=<optimized out>, signal_name=<optimized out>, parameters=<optimized out>)
at up-daemon-generated.c:1332
warning: Source file is more recent than executable.
1332 g_signal_emitv (paramv, signal_id, 0, NULL);
(gdb) frame 16
#16 0x00007f3b393416d0 in ffi_call_unix64 () from /usr/lib/libffi.so.6
(gdb) frame 17
#17 0x00007f3b393410a0 in ffi_call () from /usr/lib/libffi.so.6
(gdb) frame 18
#18 0x00007f3b3a60c569 in g_cclosure_marshal_generic (closure=0x55a5c5770420, return_gvalue=0x0, n_param_values=<optimized out>, param_values=<optimized out>,
invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../glib/gobject/gclosure.c:1500
1500 ffi_call (&cif, marshal_data ? marshal_data : cc->callback, rvalue, args);
(gdb) frame 19
#19 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5770420, return_value=0x0, n_param_values=4, param_values=0x7fffa117b260, invocation_hint=0x7fffa117b1e0)
at ../glib/gobject/gclosure.c:810
810 marshal (closure,
(gdb) frame 20
#20 0x00007f3b3a5ef10f in signal_emit_unlocked_R (node=node@entry=0x55a5c5770450, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac2630,
emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa117b260) at ../glib/gobject/gsignal.c:3673
3673 g_closure_invoke (class_closure,
(gdb) frame 21
#21 0x00007f3b3a5f3c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffa117b460)
at ../glib/gobject/gsignal.c:3391
3391 signal_emit_unlocked_R (node, detail, instance, NULL, instance_and_params);
(gdb) frame 22
#22 0x00007f3b3a5f4c77 in g_signal_emit (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at ../glib/gobject/gsignal.c:3447
3447 g_signal_emit_valist (instance, signal_id, detail, var_args);
(gdb) frame 23
#23 0x00007f3b3a6c4ab9 in on_signal_received (connection=<optimized out>, sender_name=0x7f3b2800f140 ":1.479", object_path=<optimized out>, interface_name=<optimized out>,
signal_name=0x7f3b2800f1a0 "DeviceRemoved", parameters=0x55a5c5ab30a0, user_data=0x55a5c588bc20) at ../glib/gio/gdbusproxy.c:917
917 g_signal_emit (proxy,
(gdb) frame 24
#24 0x00007f3b3a6cc3a5 in emit_signal_instance_in_idle_cb (data=0x7f3b2800c9a0) at ../glib/gio/gdbusconnection.c:3743
3743 signal_instance->callback (signal_instance->connection,
(gdb) frame 25
#25 0x00007f3b3a51ad69 in g_main_dispatch (context=0x55a5c5762850) at ../glib/glib/gmain.c:3189
3189 need_destroy = !(* dispatch) (source, callback, user_data);
(gdb) frame 26
#26 g_main_context_dispatch (context=context@entry=0x55a5c5762850) at ../glib/glib/gmain.c:3854
3854 g_main_dispatch (context);
(gdb) frame 27
#27 0x00007f3b3a51ce88 in g_main_context_iterate (context=context@entry=0x55a5c5762850, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
at ../glib/glib/gmain.c:3927
3927 g_main_context_dispatch (context);
(gdb) frame 28
#28 0x00007f3b3a51cecf in g_main_context_iteration (context=0x55a5c5762850, may_block=1) at ../glib/glib/gmain.c:3988
3988 retval = g_main_context_iterate (context, may_block, TRUE, G_THREAD_SELF);
(gdb) frame 29
#29 0x00007f3b3a6fbd3d in g_application_run (application=0x55a5c5761100, argc=<optimized out>, argv=0x7fffa117b848) at ../glib/gio/gapplication.c:2516
2516 g_main_context_iteration (context, TRUE);
(gdb) frame 30
#30 0x000055a5c40288ab in main (argc=2, argv=0x7fffa117b848) at xfpm-settings-main.c:44
44 return g_application_run (G_APPLICATION (xfpm_settings_app_new ()), argc, argv);
(gdb) frame 31
#0 0x0000000000000000 in ?? ()
(gdb) thread apply all bt full
Thread 3 (Thread 0x7f3b37e35700 (LWP 20941)):
#0 0x00007f3b3a2891a6 in __GI___poll (fds=0x55a5c5780180, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f3b3a51cdfe in g_main_context_poll (priority=<optimized out>, n_fds=3, fds=0x55a5c5780180, timeout=<optimized out>, context=0x55a5c577c730) at ../glib/glib/gmain.c:4228
ret = <optimized out>
errsv = <optimized out>
poll_func = 0x7f3b3a508920 <g_poll>
max_priority = 2147483647
timeout = -1
some_ready = <optimized out>
nfds = 3
allocated_nfds = 3
fds = 0x55a5c5780180
#2 0x00007f3b3a51cdfe in g_main_context_iterate (context=0x55a5c577c730, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:3922
max_priority = 2147483647
timeout = -1
some_ready = <optimized out>
nfds = 3
allocated_nfds = 3
fds = 0x55a5c5780180
#3 0x00007f3b3a51ddd2 in g_main_loop_run (loop=0x55a5c577c820) at ../glib/glib/gmain.c:4123
__FUNCTION__ = "g_main_loop_run"
#4 0x00007f3b3a6b71de in gdbus_shared_thread_func (user_data=0x55a5c577c700) at ../glib/gio/gdbusprivate.c:275
data = 0x55a5c577c700
#5 0x00007f3b3a4f814e in g_thread_proxy (data=0x55a5c57688f0, data=<optimized out>) at ../glib/glib/gthread.c:805
thread = 0x55a5c57688f0
__FUNCTION__ = "g_thread_proxy"
#6 0x00007f3b3a35f60a in start_thread (arg=<optimized out>) at pthread_create.c:486
ret = <optimized out>
pd = <optimized out>
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {139892317443840, 8016835740042268650, 140735896071856, 140735896071710, 140735896071711, 0, 8016835739985645546, 8016862586514444266}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#7 0x00007f3b3a293fe3 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f3b38636700 (LWP 20940)):
#0 0x00007f3b3a2891a6 in __GI___poll (fds=0x55a5c5762590, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
resultvar = 18446744073709551100
sc_cancel_oldtype = 0
#1 0x00007f3b3a51cdfe in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x55a5c5762590, timeout=<optimized out>, context=0x55a5c576b060) at ../glib/glib/gmain.c:4228
ret = <optimized out>
errsv = <optimized out>
poll_func = 0x7f3b3a508920 <g_poll>
max_priority = 2147483647
timeout = -1
some_ready = <optimized out>
nfds = 1
allocated_nfds = 1
fds = 0x55a5c5762590
#2 0x00007f3b3a51cdfe in g_main_context_iterate (context=context@entry=0x55a5c576b060, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
at ../glib/glib/gmain.c:3922
max_priority = 2147483647
timeout = -1
some_ready = <optimized out>
nfds = 1
allocated_nfds = 1
fds = 0x55a5c5762590
#3 0x00007f3b3a51cecf in g_main_context_iteration (context=0x55a5c576b060, may_block=may_block@entry=1) at ../glib/glib/gmain.c:3988
retval = <optimized out>
#4 0x00007f3b3a51cf21 in glib_worker_main (data=<optimized out>) at ../glib/glib/gmain.c:5868
#5 0x00007f3b3a4f814e in g_thread_proxy (data=0x55a5c5768850, data=<optimized out>) at ../glib/glib/gthread.c:805
thread = 0x55a5c5768850
__FUNCTION__ = "g_thread_proxy"
#6 0x00007f3b3a35f60a in start_thread (arg=<optimized out>) at pthread_create.c:486
ret = <optimized out>
pd = <optimized out>
now = <optimized out>
unwind_buf =
{cancel_jmp_buf = {{jmp_buf = {139892325836544, 8016858829249581034, 140735896071520, 140735896071374, 140735896071375, 0, 8016858829192957930, 8016862586514444266}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#7 0x00007f3b3a293fe3 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f3b3891c980 (LWP 20939)):
#0 0x00007f3b3a5e30f9 in g_type_check_instance (type_instance=0x55a5c5a0d2b0, type_instance=<optimized out>) at ../glib/gobject/gtype.c:4131
node = <optimized out>
#1 0x00007f3b3a5f6edb in g_signal_handler_disconnect (instance=0x55a5c5a0d2b0, handler_id=1103) at ../glib/gobject/gsignal.c:2627
_g_boolean_var_ = <optimized out>
handler = <optimized out>
__FUNCTION__ = "g_signal_handler_disconnect"
#2 0x000055a5c4029d9d in remove_device (object_path=<optimized out>) at xfpm-settings.c:2226
iter = 0x55a5c590c6c0
--Type <RET> for more, q to quit, c to continue without paging--c
list_store = 0x55a5c5a685b0
signal_id = 1103
device = 0x55a5c5a0d2b0
#3 0x000055a5c4029d9d in device_removed_cb (upclient=<optimized out>, object_path=<optimized out>, user_data=<optimized out>) at xfpm-settings.c:2242
#7 0x00007f3b3a5f4c77 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3447
var_args = {{gp_offset = 32, fp_offset = 48, overflow_arg_area = 0x7fffa117a830, reg_save_area = 0x7fffa117a770}}
#4 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5b0f6c0, return_value=0x0, n_param_values=2, param_values=0x7fffa117a580, invocation_hint=0x7fffa117a500) at ../glib/gobject/gclosure.c:810
marshal = 0x7f3b3a60a3b0 <g_cclosure_marshal_VOID__STRING>
marshal_data = 0x0
in_marshal = 0
real_closure = 0x55a5c5b0f6a0
__FUNCTION__ = "g_closure_invoke"
#5 0x00007f3b3a5ef83d in signal_emit_unlocked_R (node=node@entry=0x55a5c5b083a0, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac0100, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa117a580) at ../glib/gobject/gsignal.c:3635
tmp = <optimized out>
handler = 0x7f3b28004e80
accumulator = 0x0
emission = {next = 0x7fffa117abe0, instance = 0x55a5c5ac0100, ihint = {signal_id = 306, detail = 0, run_type = G_SIGNAL_RUN_FIRST}, state = EMISSION_RUN, chain_type = 0x4 [None]}
class_closure = 0x55a5c5b08370
hlist = <optimized out>
handler_list = 0x7f3b28004e80
return_accu = 0x0
accu = {g_type = 0x0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
signal_id = 306
max_sequential_handler_number = 1683
return_value_altered = 0
#6 0x00007f3b3a5f3c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffa117a750) at ../glib/gobject/gsignal.c:3391
instance_and_params = 0x7fffa117a580
signal_return_type = <optimized out>
param_values = <optimized out>
node = <optimized out>
i = <optimized out>
n_params = <optimized out>
__FUNCTION__ = "g_signal_emit_valist"
#8 0x00007f3b3a6389d6 in up_device_removed_cb (proxy=<optimized out>, object_path=<optimized out>, client=<optimized out>) at up-client.c:320
#9 0x00007f3b393416d0 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#10 0x00007f3b393410a0 in ffi_call () at /usr/lib/libffi.so.6
#14 0x00007f3b3a5f6905 in Python Exception <class 'gdb.error'> There is no member named v_pointer.:
#15 0x00007f3b3a63e0ee in up_exported_daemon_proxy_g_signal (proxy=<optimized out>, sender_name=<optimized out>, signal_name=<optimized out>, parameters=<optimized out>) at up-daemon-generated.c:1332
info = 0x7f3b3a653620 <_up_exported_daemon_signal_info_device_removed>
iter = {x = {94170474295456, 1, 1, 0, 94170474358320, 94170474231616, 94170475276096, 3579507750, 94170470867904, 140735896071784, 140735896071760, 139892363745366, 94167157964800, 139892342784048, 1, 5274380912}}
child = 0x0
paramv = 0x55a5c585eb00
num_params = 1
n = 2
signal_id = <optimized out>
#16 0x00007f3b393416d0 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#17 0x00007f3b393410a0 in ffi_call () at /usr/lib/libffi.so.6
#22 0x00007f3b3a5f4c77 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at ../glib/gobject/gsignal.c:3447
var_args = {{gp_offset = 48, fp_offset = 48, overflow_arg_area = 0x7fffa117b540, reg_save_area = 0x7fffa117b480}}
#18 0x00007f3b3a60c569 in g_cclosure_marshal_generic (closure=0x55a5c5770420, return_gvalue=0x0, n_param_values=<optimized out>, param_values=<optimized out>, invocation_hint=<optimized out>, marshal_data=<optimized out>) at ../glib/gobject/gclosure.c:1500
rtype = <optimized out>
rvalue = 0x7fffa117afa0
n_args = 5
atypes = <optimized out>
args = <optimized out>
i = <optimized out>
cif = {abi = FFI_UNIX64, nargs = 5, arg_types = 0x7fffa117af60, rtype = 0x7f3b39342180 <ffi_type_void>, bytes = 0, flags = 0}
cc = 0x55a5c5770420
enum_tmpval = <optimized out>
tmpval_used = 0
#19 0x00007f3b3a602225 in g_closure_invoke (closure=0x55a5c5770420, return_value=0x0, n_param_values=4, param_values=0x7fffa117b260, invocation_hint=0x7fffa117b1e0) at ../glib/gobject/gclosure.c:810
marshal = 0x7f3b3a60ab00 <g_type_class_meta_marshal>
marshal_data = 0x90
in_marshal = 0
real_closure = 0x55a5c5770400
__FUNCTION__ = "g_closure_invoke"
#20 0x00007f3b3a5ef10f in signal_emit_unlocked_R (node=node@entry=0x55a5c5770450, detail=detail@entry=0, instance=instance@entry=0x55a5c5ac2630, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fffa117b260) at ../glib/gobject/gsignal.c:3673
accumulator = 0x0
emission = Python Exception <class 'TypeError'> can only concatenate str (not "NoneType") to str:
{next = 0x0, instance = 0x55a5c5ac2630, ihint = {signal_id = 22, detail = 0, run_type = G_SIGNAL_RUN_LAST}, state = EMISSION_RUN, chain_type = }
class_closure = 0x55a5c5770420
hlist = <optimized out>
handler_list = <optimized out>
return_accu = 0x0
accu = {g_type = 0x0, data = {{v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}, {v_int = 0, v_uint = 0, v_long = 0, v_ulong = 0, v_int64 = 0, v_uint64 = 0, v_float = 0, v_double = 0, v_pointer = 0x0}}}
signal_id = 22
max_sequential_handler_number = 1683
return_value_altered = 0
#21 0x00007f3b3a5f3c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fffa117b460) at ../glib/gobject/gsignal.c:3391
instance_and_params = 0x7fffa117b260
signal_return_type = <optimized out>
param_values = <optimized out>
node = <optimized out>
i = <optimized out>
n_params = <optimized out>
__FUNCTION__ = "g_signal_emit_valist"
#23 0x00007f3b3a6c4ab9 in on_signal_received (connection=<optimized out>, sender_name=0x7f3b2800f140 ":1.479", object_path=<optimized out>, interface_name=<optimized out>, signal_name=0x7f3b2800f1a0 "DeviceRemoved", parameters=0x55a5c5ab30a0, user_data=0x55a5c588bc20) at ../glib/gio/gdbusproxy.c:917
data = 0x55a5c588bc20
proxy = 0x55a5c5ac2630
#24 0x00007f3b3a6cc3a5 in emit_signal_instance_in_idle_cb (data=0x7f3b2800c9a0) at ../glib/gio/gdbusconnection.c:3743
signal_instance = 0x7f3b2800c9a0
parameters = 0x55a5c5ab30a0
has_subscription = 1
#25 0x00007f3b3a51ad69 in g_main_dispatch (context=0x55a5c5762850) at ../glib/glib/gmain.c:3189
dispatch = 0x7f3b3a5153f0 <g_idle_dispatch>
prev_source = 0x0
was_in_call = 0
user_data = 0x7f3b2800c9a0
callback = 0x7f3b3a6cc330 <emit_signal_instance_in_idle_cb>
cb_funcs = <optimized out>
cb_data = 0x7f3b28013e60
need_destroy = <optimized out>
source = 0x7f3b28005c00
current = 0x55a5c5780270
i = 0
#26 0x00007f3b3a51ad69 in g_main_context_dispatch (context=context@entry=0x55a5c5762850) at ../glib/glib/gmain.c:3854
#27 0x00007f3b3a51ce88 in g_main_context_iterate (context=context@entry=0x55a5c5762850, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:3927
max_priority = 0
timeout = 0
some_ready = 1
nfds = 3
allocated_nfds = 3
fds = <optimized out>
#28 0x00007f3b3a51cecf in g_main_context_iteration (context=0x55a5c5762850, may_block=1) at ../glib/glib/gmain.c:3988
retval = <optimized out>
#29 0x00007f3b3a6fbd3d in g_application_run (application=0x55a5c5761100, argc=<optimized out>, argv=0x7fffa117b848) at ../glib/gio/gapplication.c:2516
arguments = 0x55a5c57627e0
status = 0
context = 0x55a5c5762850
acquired_context = 1
__FUNCTION__ = "g_application_run"
#30 0x000055a5c40288ab in main (argc=2, argv=0x7fffa117b848) at xfpm-settings-main.c:44
(gdb) q
```
If I stop `upower.service` via `sudo systemctl stop upower.service` it gets started again(since it's being requested by xfce4-power-manager) but it's the one generating those `dmesg` messages,
here's the output from that;
```
[10372.023440] usb 1-14: USB disconnect, device number 67
[10372.023948] hid-generic 0003:0463:FFFF.00BE: usb_submit_urb(ctrl) failed: -19
[10372.129654] systemd[1]: upower.service: Main process exited, code=killed, status=15/TERM
[10372.129859] systemd[1]: upower.service: Succeeded.
[10372.130865] systemd[1]: Stopped Daemon for power management.
[10372.131783] dbus-daemon[760]: [system] Activating via systemd: service name='org.freedesktop.UPower' unit='upower.service' requested by ':1.461' (uid=1000 pid=6189 comm="/usr/lib/xfce4/panel/wrapper-2.0 /usr/lib/xfce4/pa")
[10372.136231] systemd[1]: Starting Daemon for power management...
[10372.136261] sudo[26445]: pam_unix(sudo:session): session closed for user root
[10372.254090] dbus-daemon[760]: [system] Successfully activated service 'org.freedesktop.UPower'
[10372.254135] systemd[1]: Started Daemon for power management.
[10373.049186] usb 1-14: new low-speed USB device number 68 using xhci_hcd
[10373.859682] usb 1-14: New USB device found, idVendor=0463, idProduct=ffff, bcdDevice= 0.01
[10373.859692] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[10373.859696] usb 1-14: Product: 5E
[10373.859700] usb 1-14: Manufacturer: EATON
[10375.820091] hid-generic 0003:0463:FFFF.00BF: hiddev1,hidraw4: USB HID v1.10 Device [EATON 5E] on usb-0000:00:14.0-14/input0
[10375.827092] mtp-probe[26489]: checking bus 1, device 68: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10375.827785] mtp-probe[26489]: bus: 1, device: 68 was not an MTP device
[10376.362597] mtp-probe[26510]: checking bus 1, device 68: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10376.415039] mtp-probe[26510]: bus: 1, device: 68 was not an MTP device
[10386.869249] hid-generic 0003:0463:FFFF.00BF: usb_submit_urb(ctrl) failed: -1
[10386.869290] hid-generic 0003:0463:FFFF.00BF: timeout initializing reports
[10392.344715] usb 1-14: USB disconnect, device number 68
[10393.379162] usb 1-14: new low-speed USB device number 69 using xhci_hcd
[10394.198892] usb 1-14: New USB device found, idVendor=0463, idProduct=ffff, bcdDevice= 0.01
[10394.198902] usb 1-14: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[10394.198906] usb 1-14: Product: 5E
[10394.198910] usb 1-14: Manufacturer: EATON
[10396.159600] hid-generic 0003:0463:FFFF.00C0: hiddev1,hidraw4: USB HID v1.10 Device [EATON 5E] on usb-0000:00:14.0-14/input0
[10396.166490] mtp-probe[26536]: checking bus 1, device 69: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10396.168052] mtp-probe[26536]: bus: 1, device: 69 was not an MTP device
[10396.716515] mtp-probe[26556]: checking bus 1, device 69: "/sys/devices/pci0000:00/0000:00:14.0/usb1/1-14"
[10396.754086] mtp-probe[26556]: bus: 1, device: 69 was not an MTP device
```
Version: git
issue