15387 – xfce4-power-manager-settings segfaults in g_type_check_instance due to upower's untimely auto removing USB UPS (maybe)

xfce4-power-manager-settings segfaults in g_type_check_instance due to upower...

Status:

RESOLVED: MOVED

Priority:
Medium

Severity:
normal

Product:
Xfce4-power-manager

Component:

General

Comments

Description QDeKIFHFSzq4Uyvj7U 2019-05-11 00:23:40 CEST

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)

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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
```

Comment 1 QDeKIFHFSzq4Uyvj7U 2019-05-11 00:31:01 CEST

If I `kill` everything related to `power` except `/usr/lib/upowerd` from processes, then all those auto-disconnects are still happening until I stop `upower.service`. Then if I start it, the messages start again! This is why I know that it's `upower` that's auto-disconnecting my UPS USB connection and this disconnection, done at the "right" time, causes `xfce4-power-manager-settings` to segfault after a short while.
Should I open a new bug for `upower` ? since there are two issues total, here.

Comment 2 QDeKIFHFSzq4Uyvj7U 2019-05-11 00:42:08 CEST

Forgot to list versions:
`upower` compiled from git:
commit 215049e7b80c5f24cb35cd229a445c6cf19bd381 (HEAD -> makepkg, tag: UPOWER_0_99_10)
Date:   Wed Feb 20 14:32:49 2019 +0100

`xfce4-power-manager` compiled from git:
commit 1caf15d6dab59f910dd14041378c73ec598e2b01 (HEAD -> makepkg, origin/master, origin/HEAD, master)
Date:   Fri May 10 18:33:28 2019 +0200

both with:
```
CFLAGS="-pipe -march=native -Wno-trigraphs -fno-schedule-insns2 -fno-delete-null-pointer-checks -mtune=native -fomit-frame-pointer -O2 -D_FORTIFY_SOURCE=2"
CPPFLAGS="${CFLAGS}"
CXXFLAGS="${CFLAGS}"
```
plus the extra CFLAGS/CXXFLAGS/CPPFLAGS temporarily added for debug/stacktraces: `-ggdb3 -DDEBUG -O1 -fvar-tracking-assignments`

For `xfce4-power-manager` I've passed `--enable-debug` to `./autogen.sh`

but only now I see:
--enable-debug[=no|minimum|yes|full]
                          Build with debugging support [default=[]]
I wonder which one did it take for [] , maybe `yes` ?

Comment 3 QDeKIFHFSzq4Uyvj7U 2019-05-11 00:48:56 CEST

Kernel is:

$ uname -a
Linux i87k 4.19.41-1-lts #1 SMP Wed May 8 15:58:57 CEST 2019 x86_64 GNU/Linux

local/linux-lts 4.19.41-1
    The Linux-lts kernel and modules

Comment 4 QDeKIFHFSzq4Uyvj7U 2019-05-11 00:53:40 CEST

glib2 is: like this https://git.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/glib2&id=aecfff9f6905b71ad449d64445ab6cab9aea5b99

local/glib2 2.60.2-1
    Low level core library

but with:
CFLAGS="-pipe -march=native -Wno-trigraphs -fno-schedule-insns2 -fno-delete-null-pointer-checks -mtune=native -fomit-frame-pointer -O2 -D_FORTIFY_SOURCE=2"
CPPFLAGS="${CFLAGS}"
CXXFLAGS="${CFLAGS}"
plus extra CFLAGS/CXXFLAGS/CPPFLAGS temporarily added for debug/stacktraces "-fstack-protector-strong -fno-omit-frame-pointer -ftrack-macro-expansion=2 -ggdb -fvar-tracking-assignments -fPIC -O2"

I'll try kernel v5.1 next...

Comment 5 QDeKIFHFSzq4Uyvj7U 2019-05-11 02:31:48 CEST

Same thing with v5.1 kernel, but I find this: https://bugzilla.kernel.org/show_bug.cgi?id=73321#c11
I'll see what I can do with it. That would solve the `upower` auto-disconnecting issue. 

But the main issue, in OP, about `xfce4-power-manager-settings` crashing is still to be fixed.

Comment 6 QDeKIFHFSzq4Uyvj7U 2019-05-11 03:02:54 CEST

fixed that ^ in this: https://bugzilla.kernel.org/show_bug.cgi?id=203569
which now mitigates the current issue!

Comment 7 QDeKIFHFSzq4Uyvj7U 2019-05-11 14:28:44 CEST

even with the above mitigation I got the crash by simply running `sudo lsusb -vvvv|less` (while having xfce4-power-manager-settings opened, of course)


seems to be the same crash:

```
$ coredumpctl -1 debug
           PID: 16392 (xfce4-power-man)
           UID: 1000 (user)
           GID: 1000 (user)
        Signal: 11 (SEGV)
     Timestamp: Sat 2019-05-11 14:22:40 CEST (29s ago)
  Command Line: xfce4-power-manager-settings -d /org/freedesktop/UPower/devices/ups_hiddev1
    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: 02ff376304cb4804a80bba66a6558bdb
    Machine ID: 5767ef25f523419aaa049f3d74481940
      Hostname: i87k
       Storage: /var/lib/systemd/coredump/core.xfce4-power-man.1000.02ff376304cb4804a80bba66a6558bdb.16392.1557577360000000
       Message: Process 16392 (xfce4-power-man) of user 1000 dumped core.
                
                Stack trace of thread 16392:
                #0  0x00007cb8b39e60f9 g_type_check_instance (libgobject-2.0.so.0)
                #1  0x00007cb8b39f9edb g_signal_handler_disconnect (libgobject-2.0.so.0)
                #2  0x00005be15abcbd9d remove_device (xfce4-power-manager-settings)
                #3  0x00007cb8b3a05225 g_closure_invoke (libgobject-2.0.so.0)
                #4  0x00007cb8b39f283d signal_emit_unlocked_R (libgobject-2.0.so.0)
                #5  0x00007cb8b39f6c3e g_signal_emit_valist (libgobject-2.0.so.0)
                #6  0x00007cb8b39f7c77 g_signal_emit (libgobject-2.0.so.0)
                #7  0x00007cb8b3a3b9d6 up_device_removed_cb (libupower-glib.so.3)
                #8  0x00007cb8b27446d0 ffi_call_unix64 (libffi.so.6)
                #9  0x00007cb8b27440a0 ffi_call (libffi.so.6)
                #10 0x00007cb8b3a0f569 g_cclosure_marshal_generic (libgobject-2.0.so.0)
                #11 0x00007cb8b3a05225 g_closure_invoke (libgobject-2.0.so.0)
                #12 0x00007cb8b39f283d signal_emit_unlocked_R (libgobject-2.0.so.0)
                #13 0x00007cb8b39f9905 g_signal_emitv (libgobject-2.0.so.0)
                #14 0x00007cb8b3a410ee up_exported_daemon_proxy_g_signal (libupower-glib.so.3)
                #15 0x00007cb8b27446d0 ffi_call_unix64 (libffi.so.6)
                #16 0x00007cb8b27440a0 ffi_call (libffi.so.6)
                #17 0x00007cb8b3a0f569 g_cclosure_marshal_generic (libgobject-2.0.so.0)
                #18 0x00007cb8b3a05225 g_closure_invoke (libgobject-2.0.so.0)
                #19 0x00007cb8b39f210f signal_emit_unlocked_R (libgobject-2.0.so.0)
                #20 0x00007cb8b39f6c3e g_signal_emit_valist (libgobject-2.0.so.0)
                #21 0x00007cb8b39f7c77 g_signal_emit (libgobject-2.0.so.0)
                #22 0x00007cb8b3ac7ab9 on_signal_received (libgio-2.0.so.0)
                #23 0x00007cb8b3acf3a5 emit_signal_instance_in_idle_cb (libgio-2.0.so.0)
                #24 0x00007cb8b391dd69 g_main_dispatch (libglib-2.0.so.0)
                #25 0x00007cb8b391fe88 g_main_context_iterate (libglib-2.0.so.0)
                #26 0x00007cb8b391fecf g_main_context_iteration (libglib-2.0.so.0)
                #27 0x00007cb8b3afed3d g_application_run (libgio-2.0.so.0)
                #28 0x00005be15abca8ab main (xfce4-power-manager-settings)
                #29 0x00007cb8b35b9fab __libc_start_main (libc.so.6)
                #30 0x00005be15abc90ce _start (xfce4-power-manager-settings)
                
                Stack trace of thread 16400:
                #0  0x00007cb8b368c1a6 __GI___poll (libc.so.6)
                #1  0x00007cb8b391fdfe g_main_context_poll (libglib-2.0.so.0)
                #2  0x00007cb8b3920dd2 g_main_loop_run (libglib-2.0.so.0)
                #3  0x00007cb8b3aba1de gdbus_shared_thread_func (libgio-2.0.so.0)
                #4  0x00007cb8b38fb14e g_thread_proxy (libglib-2.0.so.0)
                #5  0x00007cb8b376260a start_thread (libpthread.so.0)
                #6  0x00007cb8b3696fe3 __clone (libc.so.6)
                
                Stack trace of thread 16399:
                #0  0x00007cb8b368c1a6 __GI___poll (libc.so.6)
                #1  0x00007cb8b391fdfe g_main_context_poll (libglib-2.0.so.0)
                #2  0x00007cb8b391fecf g_main_context_iteration (libglib-2.0.so.0)
                #3  0x00007cb8b391ff21 glib_worker_main (libglib-2.0.so.0)
                #4  0x00007cb8b38fb14e g_thread_proxy (libglib-2.0.so.0)
                #5  0x00007cb8b376260a start_thread (libpthread.so.0)
                #6  0x00007cb8b3696fe3 __clone (libc.so.6)

GNU gdb (GDB) 8.2.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /usr/bin/xfce4-power-manager-settings...done.

warning: core file may not match specified executable file.
[New LWP 16392]
[New LWP 16400]
[New LWP 16399]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `xfce4-power-manager-settings -d /org/freedesktop/UPower/devices/ups_hiddev1'.
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 0x7cb8b1d1f980 (LWP 16392))]
(gdb) bt
#0  0x00007cb8b39e60f9 in g_type_check_instance (type_instance=0x5be15b091610, type_instance=<optimized out>) at ../glib/gobject/gtype.c:4131
#1  0x00007cb8b39f9edb in g_signal_handler_disconnect (instance=0x5be15b091610, handler_id=1101) at ../glib/gobject/gsignal.c:2627
#2  0x00005be15abcbd9d in remove_device (object_path=<optimized out>) at xfpm-settings.c:2226
#3  0x00005be15abcbd9d in device_removed_cb (upclient=<optimized out>, object_path=<optimized out>, user_data=<optimized out>) at xfpm-settings.c:2242
#7  0x00007cb8b39f7c77 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=detail@entry=0) at ../glib/gobject/gsignal.c:3447
    #4  0x00007cb8b3a05225 in g_closure_invoke (closure=0x5be15b0e1750, return_value=0x0, n_param_values=2, param_values=0x7fff56248900, invocation_hint=0x7fff56248880)
    at ../glib/gobject/gclosure.c:810
    #5  0x00007cb8b39f283d in signal_emit_unlocked_R
    (node=node@entry=0x5be15ada4760, detail=detail@entry=0, instance=instance@entry=0x5be15adf6d00, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff56248900) at ../glib/gobject/gsignal.c:3635
    #6  0x00007cb8b39f6c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff56248ad0)
    at ../glib/gobject/gsignal.c:3391
#8  0x00007cb8b3a3b9d6 in up_device_removed_cb (proxy=<optimized out>, object_path=<optimized out>, client=<optimized out>) at up-client.c:320
#9  0x00007cb8b27446d0 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#10 0x00007cb8b27440a0 in ffi_call () at /usr/lib/libffi.so.6
#14 0x00007cb8b39f9905 in Python Exception <class 'gdb.error'> There is no member named v_pointer.: 
#15 0x00007cb8b3a410ee 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 0x00007cb8b27446d0 in ffi_call_unix64 () at /usr/lib/libffi.so.6
#17 0x00007cb8b27440a0 in ffi_call () at /usr/lib/libffi.so.6
#22 0x00007cb8b39f7c77 in <emit signal ??? on instance ???> (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>) at ../glib/gobject/gsignal.c:3447
    #18 0x00007cb8b3a0f569 in g_cclosure_marshal_generic
    (closure=0x5be15ad425e0, 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 0x00007cb8b3a05225 in g_closure_invoke (closure=0x5be15ad425e0, return_value=0x0, n_param_values=4, param_values=0x7fff562495e0, invocation_hint=0x7fff56249560)
    at ../glib/gobject/gclosure.c:810
    #20 0x00007cb8b39f210f in signal_emit_unlocked_R
    (node=node@entry=0x5be15ad42610, detail=detail@entry=0, instance=instance@entry=0x5be15b09a560, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff562495e0) at ../glib/gobject/gsignal.c:3673
    #21 0x00007cb8b39f6c3e in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff562497e0)
    at ../glib/gobject/gsignal.c:3391
#23 0x00007cb8b3ac7ab9 in on_signal_received
    (connection=<optimized out>, sender_name=0x7cb8a4009be0 ":1.21", object_path=<optimized out>, interface_name=<optimized out>, signal_name=0x7cb8a400d2f0 "DeviceRemoved", parameters=0x5be15b11f4f0, user_data=0x5be15ae17a20) at ../glib/gio/gdbusproxy.c:917
#24 0x00007cb8b3acf3a5 in emit_signal_instance_in_idle_cb (data=0x7cb8a40138a0) at ../glib/gio/gdbusconnection.c:3743
#25 0x00007cb8b391dd69 in g_main_dispatch (context=0x5be15ad34860) at ../glib/glib/gmain.c:3189
#26 0x00007cb8b391dd69 in g_main_context_dispatch (context=context@entry=0x5be15ad34860) at ../glib/glib/gmain.c:3854
#27 0x00007cb8b391fe88 in g_main_context_iterate (context=context@entry=0x5be15ad34860, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
    at ../glib/glib/gmain.c:3927
#28 0x00007cb8b391fecf in g_main_context_iteration (context=0x5be15ad34860, may_block=1) at ../glib/glib/gmain.c:3988
#29 0x00007cb8b3afed3d in g_application_run (application=0x5be15ad33100, argc=<optimized out>, argv=0x7fff56249bc8) at ../glib/gio/gapplication.c:2516
#30 0x00005be15abca8ab in main (argc=3, argv=0x7fff56249bc8) 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  0x00007cb8b39f9edb in g_signal_handler_disconnect (instance=0x5be15b091610, handler_id=1101) at ../glib/gobject/gsignal.c:2627
2627	  g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
(gdb) 
```

And now the charge is reported at 0% as usual (previously it was 82% before sudo lsusb) as if, lsusb confused the UPS or something.

I do note that lsusb as root shows iManufacturer and iProduct with `(error)` but non-root does not:
`sudo lsusb -vvvv|less`:
Bus 001 Device 007: ID 0463:ffff MGE UPS Systems UPS
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0463 MGE UPS Systems
  idProduct          0xffff UPS
  bcdDevice            0.01
  iManufacturer           1 (error)
  iProduct                2 (error)
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0022
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               20mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode           33 US
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     549
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              20
Device Status:     0x0001
  Self Powered


`lsusb -vvvv|less` :
Bus 001 Device 007: ID 0463:ffff MGE UPS Systems UPS
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0463 MGE UPS Systems
  idProduct          0xffff UPS
  bcdDevice            0.01
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0022
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               20mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode           33 US
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     549
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              20

Comment 8 QDeKIFHFSzq4Uyvj7U 2019-05-11 16:27:32 CEST

I guess it got really confused because `lsusb` doesn't even list it after reboot(I'd have to physically re-plug it!):

[    3.909057] usb 1-14: device descriptor read/64, error -32
[    4.127226] usb 1-14: device descriptor read/64, error -32
[    4.350099] usb 1-14: new low-speed USB device number 6 using xhci_hcd
[    4.465187] usb 1-14: device descriptor read/64, error -32
[    4.687196] usb 1-14: device descriptor read/64, error -32
[    4.796168] usb usb1-port14: attempt power cycle
[    5.424111] usb 1-14: new low-speed USB device number 7 using xhci_hcd
[    5.437328] usb 1-14: device descriptor read/8, error -32
[    5.553271] usb 1-14: device descriptor read/8, error -32
[    5.774047] usb 1-14: new low-speed USB device number 8 using xhci_hcd
[    5.786990] usb 1-14: device descriptor read/8, error -32
[    5.911707] usb 1-14: device descriptor read/8, error -32
[    6.022069] usb usb1-port14: unable to enumerate USB device

some `lspci`:
00:14.0 USB controller: Intel Corporation 200 Series/Z370 Chipset Family USB 3.0 xHCI Controller
00:1b.0 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #17 (rev f0)
00:1c.0 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #1 (rev f0)
00:1c.4 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #5 (rev f0)
00:1d.0 PCI bridge: Intel Corporation 200 Series PCH PCI Express Root Port #9 (rev f0)

Here's after replug:
`lsusb -vvvv|less`:
Bus 001 Device 009: ID 0463:ffff MGE UPS Systems UPS
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x0463 MGE UPS Systems
  idProduct          0xffff UPS
  bcdDevice            0.01
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0022
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xa0
      (Bus Powered)
      Remote Wakeup
    MaxPower               20mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.10
          bCountryCode           33 US
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength     549
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              20


and the diff with sudo:
$ colordiff -up lsusb2 lsusb3sudo
--- lsusb2	2019-05-11 15:13:39.923990792 +0200
+++ lsusb3sudo	2019-05-11 15:14:11.342990493 +0200
@@ -10,8 +10,8 @@ Device Descriptor:
   idVendor           0x0463 MGE UPS Systems
   idProduct          0xffff UPS
   bcdDevice            0.01
-  iManufacturer           1 
-  iProduct                2 
+  iManufacturer           1 EATON
+  iProduct                2 5E
   iSerial                 0 
   bNumConfigurations      1
   Configuration Descriptor:
@@ -55,4 +55,6 @@ Device Descriptor:
           Usage Type               Data
         wMaxPacketSize     0x0008  1x 8 bytes
         bInterval              20
+Device Status:     0x0001
+  Self Powered
 
No more `(error)` with sudo, looks like. `Current charge 0%` though, but no `lsusb` invocation ever since(my prev. comment) caused a crash of `xfce-power-manager-settings` anymore. Though I did just recompile `upower` and `xfce4-power-manager` packages since the previous comment, thinking that maybe they need to incorporate the newly changed kernel header... (their HEAD commits didn't change since! I checked)

I also messed a bit with Tunables from `sudo powertop` to see if they change anything(turning Bad into Good or viceversa), apparently not.

Ok, no to reproduce the crash in OP, I proceeded to physically remove and plug back in the USB cable into the UPS and that was enough to cause the crash.
So everything else shouldn't matter. Any kind of USB disconnection (be it physical, or emulated-by-upower) is enough to cause the crash from OP.

Comment 9 QDeKIFHFSzq4Uyvj7U 2019-05-11 21:10:35 CEST

(In reply to howaboutsynergy from comment #8)
> Ok, no to reproduce the crash in OP, I proceeded to physically remove and plug back in the USB cable into the UPS and that was enough to cause the crash.
> So everything else shouldn't matter. Any kind of USB disconnection (be it physical, or emulated-by-upower) is enough to cause the crash from OP.

*no=so

Comment 10 Git Bot editbugs

2020-05-27 01:45:46 CEST

-- GitLab Migration Automatic Message --

This bug has been migrated to xfce.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.xfce.org/xfce/xfce4-power-manager/-/issues/56.

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