Bug 355531

Application: dolphin (15.08.1)

Qt Version: 5.5.0
Operating System: Linux 4.2.5-300.fc23.x86_64 x86_64
Distribution: "Fedora release 23 (Twenty Three)"

-- Information about the crash:
- What I was doing when the application crashed:

Open Dolphin -> click "Control" -> click "Configure Dolphin..." -> crash

The crash can be reproduced every time.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
84	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f6485e77940 (LWP 25261))]

Thread 2 (Thread 0x7f645a0d3700 (LWP 25273)):
#0  0x00007f647d33bfdd in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6477a6e16c in g_main_context_poll (priority=2147483647, n_fds=1, fds=0x7f6454003020, timeout=<optimized out>, context=0x7f6454000990) at gmain.c:4135
#2  g_main_context_iterate (context=context@entry=0x7f6454000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3835
#3  0x00007f6477a6e27c in g_main_context_iteration (context=0x7f6454000990, may_block=may_block@entry=1) at gmain.c:3901
#4  0x00007f647e17adab in QEventDispatcherGlib::processEvents (this=0x7f64540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007f647e121daa in QEventLoop::exec (this=this@entry=0x7f645a0d2c80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f647df3e5a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f647df4354e in QThreadPrivate::start (arg=0x5558d7a18250) at thread/qthread_unix.cpp:331
#8  0x00007f6479ebb60a in start_thread (arg=0x7f645a0d3700) at pthread_create.c:334
#9  0x00007f647d347a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f6485e77940 (LWP 25261)):
[KCrash Handler]
#6  QBasicAtomicOps<4>::ref<int> (_q_value=@0x79546174654d7451: <error reading variable>) at ../../src/corelib/arch/qatomic_x86.h:181
#7  QBasicAtomicInteger<int>::ref (this=0x79546174654d7451) at ../../src/corelib/thread/qbasicatomic.h:129
#8  QtSharedPointer::ExternalRefCountData::getAndRef (obj=obj@entry=0x5558d7f44ce0) at tools/qsharedpointer.cpp:1343
#9  0x00007f647f52d0f0 in QWeakPointer<QObject>::QWeakPointer<QObject> (ptr=0x5558d7f44ce0, this=<optimized out>) at ../../src/corelib/tools/qsharedpointer_impl.h:696
#10 QWeakPointer<QObject>::assign<QObject> (ptr=0x5558d7f44ce0, this=0x7f647fbff340 <qt_last_mouse_receiver>) at ../../src/corelib/tools/qsharedpointer_impl.h:692
#11 QPointer<QWidget>::operator= (p=0x5558d7f44ce0, this=0x7f647fbff340 <qt_last_mouse_receiver>) at ../../src/corelib/kernel/qpointer.h:67
#12 QWidgetWindow::handleMouseEvent (this=this@entry=0x5558d7b462b0, event=event@entry=0x7ffd6c592540) at kernel/qwidgetwindow.cpp:453
#13 0x00007f647f52f33b in QWidgetWindow::event (this=0x5558d7b462b0, event=0x7ffd6c592540) at kernel/qwidgetwindow.cpp:210
#14 0x00007f647f4cf4ac in QApplicationPrivate::notify_helper (this=0x5558d7500570, receiver=0x5558d7b462b0, e=0x7ffd6c592540) at kernel/qapplication.cpp:3717
#15 0x00007f647f4d4976 in QApplication::notify (this=0x7ffd6c593910, receiver=0x5558d7b462b0, e=0x7ffd6c592540) at kernel/qapplication.cpp:3500
#16 0x00007f647e12461b in QCoreApplication::notifyInternal (this=0x7ffd6c593910, receiver=receiver@entry=0x5558d7b462b0, event=event@entry=0x7ffd6c592540) at kernel/qcoreapplication.cpp:965
#17 0x00007f647ed22af1 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd6c592540, receiver=0x5558d7b462b0) at ../../src/corelib/kernel/qcoreapplication.h:227
#18 QGuiApplicationPrivate::processMouseEvent (e=0x5558d86ca400) at kernel/qguiapplication.cpp:1790
#19 0x00007f647ed247c5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x5558d86ca400) at kernel/qguiapplication.cpp:1582
#20 0x00007f647ed085d8 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:608
#21 0x00007f6464005e80 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#22 0x00007f6477a6de3a in g_main_dispatch (context=0x7f645c0016f0) at gmain.c:3154
#23 g_main_context_dispatch (context=context@entry=0x7f645c0016f0) at gmain.c:3769
#24 0x00007f6477a6e1d0 in g_main_context_iterate (context=context@entry=0x7f645c0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3840
#25 0x00007f6477a6e27c in g_main_context_iteration (context=0x7f645c0016f0, may_block=may_block@entry=1) at gmain.c:3901
#26 0x00007f647e17ad8f in QEventDispatcherGlib::processEvents (this=0x5558d7539840, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#27 0x00007f647e121daa in QEventLoop::exec (this=this@entry=0x7ffd6c5928c0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#28 0x00007f647f64f420 in QMenu::exec (this=<optimized out>, p=..., action=action@entry=0x0) at widgets/qmenu.cpp:2307
#29 0x00007f647f69184e in QToolButtonPrivate::popupTimerDone (this=0x5558d79abee0) at widgets/qtoolbutton.cpp:780
#30 0x00007f647e15315a in QMetaObject::activate (sender=sender@entry=0x5558d7992a70, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3718
#31 0x00007f647e153957 in QMetaObject::activate (sender=sender@entry=0x5558d7992a70, m=m@entry=0x7f647fbf0860 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3583
#32 0x00007f647f869810 in QAbstractButton::pressed (this=this@entry=0x5558d7992a70) at .moc/moc_qabstractbutton.cpp:290
#33 0x00007f647f5cc9b7 in QAbstractButtonPrivate::emitPressed (this=0x5558d79abee0) at widgets/qabstractbutton.cpp:548
#34 0x00007f647f5ccb11 in QAbstractButton::mousePressEvent (this=this@entry=0x5558d7992a70, e=e@entry=0x7ffd6c593040) at widgets/qabstractbutton.cpp:1105
#35 0x00007f647f6925af in QToolButton::mousePressEvent (this=0x5558d7992a70, e=0x7ffd6c593040) at widgets/qtoolbutton.cpp:600
#36 0x00007f647f512a1f in QWidget::event (this=0x5558d7992a70, event=event@entry=0x7ffd6c593040) at kernel/qwidget.cpp:8664
#37 0x00007f647f5cede3 in QAbstractButton::event (this=this@entry=0x5558d7992a70, e=e@entry=0x7ffd6c593040) at widgets/qabstractbutton.cpp:1089
#38 0x00007f647f692859 in QToolButton::event (this=0x5558d7992a70, event=0x7ffd6c593040) at widgets/qtoolbutton.cpp:965
#39 0x00007f647f4cf4ac in QApplicationPrivate::notify_helper (this=0x5558d7500570, receiver=0x5558d7992a70, e=0x7ffd6c593040) at kernel/qapplication.cpp:3717
#40 0x00007f647f4d5079 in QApplication::notify (this=<optimized out>, receiver=0x5558d7992a70, e=0x7ffd6c593040) at kernel/qapplication.cpp:3277
#41 0x00007f647e12461b in QCoreApplication::notifyInternal (this=0x7ffd6c593910, receiver=0x5558d7992a70, event=0x7ffd6c593040) at kernel/qcoreapplication.cpp:965
#42 0x00007f647f4d3f82 in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5558d7992a70, event=event@entry=0x7ffd6c593040, alienWidget=alienWidget@entry=0x5558d7992a70, nativeWidget=0x5558d77aa8c0, buttonDown=buttonDown@entry=0x7f647fbff360 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:227
#43 0x00007f647f52cd8b in QWidgetWindow::handleMouseEvent (this=this@entry=0x5558d7dc5300, event=event@entry=0x7ffd6c593450) at kernel/qwidgetwindow.cpp:555
#44 0x00007f647f52f33b in QWidgetWindow::event (this=0x5558d7dc5300, event=0x7ffd6c593450) at kernel/qwidgetwindow.cpp:210
#45 0x00007f647f4cf4ac in QApplicationPrivate::notify_helper (this=0x5558d7500570, receiver=0x5558d7dc5300, e=0x7ffd6c593450) at kernel/qapplication.cpp:3717
#46 0x00007f647f4d4976 in QApplication::notify (this=0x7ffd6c593910, receiver=0x5558d7dc5300, e=0x7ffd6c593450) at kernel/qapplication.cpp:3500
#47 0x00007f647e12461b in QCoreApplication::notifyInternal (this=0x7ffd6c593910, receiver=receiver@entry=0x5558d7dc5300, event=event@entry=0x7ffd6c593450) at kernel/qcoreapplication.cpp:965
#48 0x00007f647ed22af1 in QCoreApplication::sendSpontaneousEvent (event=0x7ffd6c593450, receiver=0x5558d7dc5300) at ../../src/corelib/kernel/qcoreapplication.h:227
#49 QGuiApplicationPrivate::processMouseEvent (e=0x5558d765a180) at kernel/qguiapplication.cpp:1790
#50 0x00007f647ed247c5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x5558d765a180) at kernel/qguiapplication.cpp:1582
#51 0x00007f647ed085d8 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:608
#52 0x00007f6464005e80 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#53 0x00007f6477a6de3a in g_main_dispatch (context=0x7f645c0016f0) at gmain.c:3154
#54 g_main_context_dispatch (context=context@entry=0x7f645c0016f0) at gmain.c:3769
#55 0x00007f6477a6e1d0 in g_main_context_iterate (context=context@entry=0x7f645c0016f0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3840
#56 0x00007f6477a6e27c in g_main_context_iteration (context=0x7f645c0016f0, may_block=may_block@entry=1) at gmain.c:3901
#57 0x00007f647e17ad8f in QEventDispatcherGlib::processEvents (this=0x5558d7539840, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#58 0x00007f647e121daa in QEventLoop::exec (this=this@entry=0x7ffd6c5937d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#59 0x00007f647e129e6c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#60 0x00007f6485af9e44 in kdemain () from /lib64/libkdeinit5_dolphin.so
#61 0x00007f647d265580 in __libc_start_main (main=0x5558d6e1cbc0 <main>, argc=1, argv=0x7ffd6c593a98, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd6c593a88) at libc-start.c:289
#62 0x00005558d6e1cbf9 in _start ()

Reported using DrKonqi