[kde] [Bug 346335] New: System Settings crash while editting Global Keyboard Shortcuts

Sat Apr 18 14:20:18 BST 2015

https://bugs.kde.org/show_bug.cgi?id=346335

            Bug ID: 346335
           Summary: System Settings crash while editting Global Keyboard
                    Shortcuts
           Product: kde
           Version: unspecified
          Platform: unspecified
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: peter at cordes.ca

Application: systemsettings5 (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-14-generic x86_64
Distribution: Ubuntu Vivid Vervet (development branch)

-- Information about the crash:
- Custom settings of the application:

Added 
> Switch to Screen 0 = Meta+Shift+1
> Switch to Screen 2 = Meta+Shift+2  (I only have 2 screens, but I misclicked / forgot I'd started at 0.) 

I had compositing toggled off at the time, in case that matters.

I'm on a fresh install of Kubuntu 15.04.  I even moved aside my old dotfiles,
so I don't have any old cruft causing problems.

- What I was doing when the application crashed:

I think I was trying out the keybinds to see if they did anything.  (They don't
seem to, maybe because I have "focus follows mouse".  I was messing with this
in the first place because I was looking a way to get "Window to Next Screen"
but without changing focus.) 

So I think I had the default/custom radiobutton thing showing for the Switch to
Screen 2 action, and maybe have hit escape or something by accident.  I think I
saw a "are you sure you want to leave without applying?" dialog.  This is when
System Settings crashed.

I can't reproduce it, but it may be that I just can't remember exactly what I
did.

The crash does not seem to be reproducible.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f2b04362780 (LWP 31070))]

Thread 4 (Thread 0x7f2af3ade700 (LWP 31071)):
#0  0x00007f2b00ac98dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2afede3b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2afede564f in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2af6029099 in QXcbEventReader::run (this=0x24beaf0) at
qxcbconnection.cpp:1105
#4  0x00007f2b0114ab0e in QThreadPrivate::start (arg=0x24beaf0) at
thread/qthread_unix.cpp:337
#5  0x00007f2afdcfd6aa in start_thread (arg=0x7f2af3ade700) at
pthread_create.c:333
#6  0x00007f2b00ad4eed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f2ae4820700 (LWP 31072)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2ae785d4fb in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#2  0x00007f2ae785cc87 in ?? () from /usr/lib/x86_64-linux-gnu/dri/r600_dri.so
#3  0x00007f2afdcfd6aa in start_thread (arg=0x7f2ae4820700) at
pthread_create.c:333
#4  0x00007f2b00ad4eed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2a927fb700 (LWP 24309)):
#0  0x00007f2afd8237a4 in g_mutex_unlock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2afd7de6f9 in g_main_context_query () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2afd7dee37 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2afd7df242 in g_main_loop_run () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2acfa49ae6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f2afd805955 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2afdcfd6aa in start_thread (arg=0x7f2a927fb700) at
pthread_create.c:333
#7  0x00007f2b00ad4eed in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2b04362780 (LWP 31070)):
[KCrash Handler]
#6  QString (other=<error reading variable: Cannot access memory at address
0x73006e006f006b>, this=this at entry=0x7fffef6454d0) at
../../include/QtCore/../../src/corelib/tools/qstring.h:811
#7  QLabel::text (this=0x73006e006f0063) at widgets/qlabel.cpp:322
#8  0x00007f2b0331f741 in ShortcutEditWidget::setKeySequence (this=0x3691eb0,
activeSeq=...) at ../../src/kshortcuteditwidget.cpp:187
#9  0x00007f2b013b935a in call (a=0x7fffef645620, r=0x7f2afe83a550 <(anonymous
namespace)::Q_QGS_s_instance::innerFunction()::holder>, this=0x3037a50) at
../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#10 QMetaObject::activate (sender=0x7f2afe83a550 <(anonymous
namespace)::Q_QGS_s_instance::innerFunction()::holder>, signalOffset=<optimized
out>, local_signal_index=local_signal_index at entry=0,
argv=argv at entry=0x7fffef645620) at kernel/qobject.cpp:3702
#11 0x00007f2b013ba057 in QMetaObject::activate (sender=<optimized out>,
m=m at entry=0x7f2afe839a00 <KGlobalAccel::staticMetaObject>,
local_signal_index=local_signal_index at entry=0, argv=argv at entry=0x7fffef645620)
at kernel/qobject.cpp:3582
#12 0x00007f2afe61e764 in KGlobalAccel::globalShortcutChanged (this=<optimized
out>, _t1=0x3808970, _t2=...) at ./moc_kglobalaccel.cpp:158
#13 0x00007f2afe625da4 in KGlobalAccelPrivate::updateGlobalShortcut
(this=0x25e5840, action=0x3808970, actionFlags=..., globalFlags=(unknown:
62479488)) at ../../src/kglobalaccel.cpp:320
#14 0x00007f2afe62685d in KGlobalAccel::setShortcut (this=0x7f2afe83a550
<(anonymous namespace)::Q_QGS_s_instance::innerFunction()::holder>,
action=0x3808970, shortcut=..., loadFlag=KGlobalAccel::Autoloading) at
../../src/kglobalaccel.cpp:631
#15 0x00007f2a942780fc in
KGlobalShortcutsEditor::KGlobalShortcutsEditorPrivate::loadComponent
(this=0x7fffef6454d0, componentPath=...) at
../../../kcms/keys/kglobalshortcutseditor.cpp:624
#16 0x00007f2a9427a1e7 in KGlobalShortcutsEditor::load (this=0x2855000) at
../../../kcms/keys/kglobalshortcutseditor.cpp:464
#17 0x00007f2b02c67219 in KCModule::qt_static_metacall (_o=<optimized out>,
_c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at
moc_kcmodule.cpp:107
#18 0x00007f2b013ba73a in QObject::event (this=this at entry=0x2b9f420,
e=e at entry=0x27415d0) at kernel/qobject.cpp:1245
#19 0x00007f2b021b8377 in QWidget::event (this=0x2b9f420, event=0x27415d0) at
kernel/qwidget.cpp:9083
#20 0x00007f2b02174b2c in QApplicationPrivate::notify_helper (this=0x24a3b10,
receiver=0x2b9f420, e=0x27415d0) at kernel/qapplication.cpp:3720
#21 0x00007f2b0217a000 in QApplication::notify (this=0x7fffef646280,
receiver=0x2b9f420, e=0x27415d0) at kernel/qapplication.cpp:3503
#22 0x00007f2b01388c2b in QCoreApplication::notifyInternal
(this=0x7fffef646280, receiver=0x2b9f420, event=event at entry=0x27415d0) at
kernel/qcoreapplication.cpp:935
#23 0x00007f2b0138ac9b in sendEvent (event=0x27415d0, receiver=<optimized out>)
at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#24 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver at entry=0x0,
event_type=event_type at entry=0, data=0x24a2d60) at
kernel/qcoreapplication.cpp:1552
#25 0x00007f2b0138b298 in QCoreApplication::sendPostedEvents
(receiver=receiver at entry=0x0, event_type=event_type at entry=0) at
kernel/qcoreapplication.cpp:1410
#26 0x00007f2b013e1843 in postEventSourceDispatch (s=0x24fe8f0) at
kernel/qeventdispatcher_glib.cpp:271
#27 0x00007f2afd7dec3d in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f2afd7def20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f2afd7defcc in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f2b013e1c57 in QEventDispatcherGlib::processEvents (this=0x24f2480,
flags=...) at kernel/qeventdispatcher_glib.cpp:418
#31 0x00007f2b013863e2 in QEventLoop::exec (this=this at entry=0x7fffef646160,
flags=..., flags at entry=...) at kernel/qeventloop.cpp:204
#32 0x00007f2b0138e02c in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1188
#33 0x00007f2b01baf31c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1510
#34 0x00007f2b021707a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#35 0x000000000040eebc in main (argc=1, argv=<optimized out>) at
../../app/main.cpp:54

Reported using DrKonqi

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