Bug 363472

Application: dolphin (15.12.3)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-22-generic x86_64
Distribution: Ubuntu 16.04 LTS

-- Information about the crash:
- What I was doing when the application crashed: I wanted to see information about a file in the context menu. The crash happened when the cursor passed over Activities.

The crash can be reproduced every time.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7f1495dae900 (LWP 6790))]

Thread 4 (Thread 0x7f1492f0b700 (LWP 6791)):
#0  0x00007f14a97b9e8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f149de99c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f149de9b8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f149588f629 in QXcbEventReader::run (this=0x25e74e0) at qxcbconnection.cpp:1253
#4  0x00007f14a438b84e in QThreadPrivate::start (arg=0x25e74e0) at thread/qthread_unix.cpp:331
#5  0x00007f149f654754 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#6  0x00007f14a0b396fa in start_thread (arg=0x7f1492f0b700) at pthread_create.c:333
#7  0x00007f14a97c5b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f1489c01700 (LWP 6793)):
#0  0x00007f149ffae41d in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f14a45c2a9b in QEventDispatcherGlib::processEvents (this=0x7f14840008f0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#2  0x00007f14a4569dea in QEventLoop::exec (this=this@entry=0x7f1489c00c00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#3  0x00007f14a43868a4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#4  0x00007f14a438b84e in QThreadPrivate::start (arg=0x2a6c360) at thread/qthread_unix.cpp:331
#5  0x00007f149f654754 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#6  0x00007f14a0b396fa in start_thread (arg=0x7f1489c01700) at pthread_create.c:333
#7  0x00007f14a97c5b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f1483fff700 (LWP 6812)):
[KCrash Handler]
#6  QVector<void*>::isEmpty (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qvector.h:84
#7  QThreadStorageData::finish (p=p@entry=0xf8) at thread/qthreadstorage.cpp:169
#8  0x00007f14a438a9f5 in QThreadPrivate::finish (arg=arg@entry=0x2d8bbd0) at thread/qthread_unix.cpp:351
#9  0x00007f14a438b86f in __pthread_cleanup_class::~__pthread_cleanup_class (this=<synthetic pointer>, __in_chrg=<optimized out>) at /usr/include/pthread.h:561
#10 QThreadPrivate::start (arg=0x2d8bbd0) at thread/qthread_unix.cpp:290
#11 0x00007f149f654754 in ?? () from /usr/lib/nvidia-304/libGL.so.1
#12 0x00007f14a0b396fa in start_thread (arg=0x7f1483fff700) at pthread_create.c:333
#13 0x00007f14a97c5b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f1495dae900 (LWP 6790)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f149de99eb9 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f149de9b617 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f149de9b721 in xcb_wait_for_reply () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#4  0x00007f14958b1266 in QXcbCursor::queryPointer (c=0x25968e0, rootWin=rootWin@entry=0x0, pos=pos@entry=0x7ffc4c279530, keybMask=keybMask@entry=0x0) at qxcbcursor.cpp:619
#5  0x00007f14958b1318 in QXcbCursor::pos (this=0x25edb50) at qxcbcursor.cpp:639
#6  0x00007f14a4ac8fd8 in QCursor::pos (screen=<optimized out>) at kernel/qcursor.cpp:182
#7  0x00007f14a4ac90b1 in QCursor::pos () at kernel/qcursor.cpp:206
#8  0x00007f14a51ed971 in QMenu::popup (this=0x2da7c50, p=..., atAction=atAction@entry=0x0) at widgets/qmenu.cpp:2103
#9  0x00007f14a51ef9b1 in QMenu::internalDelayedPopup (this=0x2e4ca90) at widgets/qmenu.cpp:3257
#10 0x00007f14a459be53 in QObject::event (this=this@entry=0x2e4ca90, e=e@entry=0x7ffc4c279ac0) at kernel/qobject.cpp:1261
#11 0x00007f14a50b1cdb in QWidget::event (this=this@entry=0x2e4ca90, event=event@entry=0x7ffc4c279ac0) at kernel/qwidget.cpp:9105
#12 0x00007f14a51f4a83 in QMenu::event (this=0x2e4ca90, e=0x7ffc4c279ac0) at widgets/qmenu.cpp:2654
#13 0x00007f14a506f05c in QApplicationPrivate::notify_helper (this=this@entry=0x25bbfa0, receiver=receiver@entry=0x2e4ca90, e=e@entry=0x7ffc4c279ac0) at kernel/qapplication.cpp:3716
#14 0x00007f14a5074516 in QApplication::notify (this=0x7ffc4c27b990, receiver=0x2e4ca90, e=0x7ffc4c279ac0) at kernel/qapplication.cpp:3499
#15 0x00007f14a456c62b in QCoreApplication::notifyInternal (this=0x7ffc4c27b990, receiver=0x2e4ca90, event=event@entry=0x7ffc4c279ac0) at kernel/qcoreapplication.cpp:965
#16 0x00007f14a45c189d in QCoreApplication::sendEvent (event=0x7ffc4c279ac0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#17 QTimerInfoList::activateTimers (this=0x260bb00) at kernel/qtimerinfo_unix.cpp:637
#18 0x00007f14a45c1da1 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#19 0x00007f149ffae127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f149ffae380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f149ffae42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f14a45c2a7f in QEventDispatcherGlib::processEvents (this=0x260c280, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#23 0x00007f14a4569dea in QEventLoop::exec (this=this@entry=0x7ffc4c279d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#24 0x00007f14a51eee10 in QMenu::exec (this=<optimized out>, p=..., action=0x0) at widgets/qmenu.cpp:2307
#25 0x00007f14a9adcd26 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#26 0x00007f14a9ade2a5 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#27 0x00007f14a9ad3e84 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#28 0x00007f14a459ae4f in QtPrivate::QSlotObjectBase::call (a=0x7ffc4c27a0e0, r=0x267c360, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#29 QMetaObject::activate (sender=0x29ec1a0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#30 0x00007f14a947e8d4 in DolphinView::requestContextMenu(QPoint const&, KFileItem const&, QUrl const&, QList<QAction*> const&) () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#31 0x00007f14a945a90e in DolphinView::slotItemContextMenuRequested(int, QPointF const&) () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#32 0x00007f14a459ae4f in QtPrivate::QSlotObjectBase::call (a=0x7ffc4c27a2a0, r=0x29ec1a0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#33 QMetaObject::activate (sender=0x29e3b00, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3698
#34 0x00007f14a947cca6 in KItemListController::itemContextMenuRequested(int, QPointF const&) () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#35 0x00007f14a941c63d in KItemListController::mousePressEvent(QGraphicsSceneMouseEvent*, QTransform const&) () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#36 0x00007f14a941bbf4 in KItemListController::processEvent(QEvent*, QTransform const&) () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#37 0x00007f14a942e1b2 in KItemListView::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#38 0x00007f14a506f05c in QApplicationPrivate::notify_helper (this=this@entry=0x25bbfa0, receiver=receiver@entry=0x29eae40, e=e@entry=0x7ffc4c27ab40) at kernel/qapplication.cpp:3716
#39 0x00007f14a5074516 in QApplication::notify (this=0x7ffc4c27b990, receiver=0x29eae40, e=0x7ffc4c27ab40) at kernel/qapplication.cpp:3499
#40 0x00007f14a456c62b in QCoreApplication::notifyInternal (this=0x7ffc4c27b990, receiver=0x29eae40, event=event@entry=0x7ffc4c27ab40) at kernel/qcoreapplication.cpp:965
#41 0x00007f14a506b756 in QCoreApplication::sendSpontaneousEvent (event=event@entry=0x7ffc4c27ab40, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#42 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7ffc4c27ab40) at kernel/qapplication.cpp:4163
#43 0x00007f14a53934b3 in QGraphicsScenePrivate::sendEvent (this=<optimized out>, item=0x29eae50, event=0x7ffc4c27ab40) at graphicsview/qgraphicsscene.cpp:1236
#44 0x00007f14a5393f61 in QGraphicsScenePrivate::sendMouseEvent (this=0x297b420, mouseEvent=0x7ffc4c27ab40) at graphicsview/qgraphicsscene.cpp:1314
#45 0x00007f14a539c716 in QGraphicsScenePrivate::mousePressEventHandler (this=this@entry=0x297b420, mouseEvent=mouseEvent@entry=0x7ffc4c27ab40) at graphicsview/qgraphicsscene.cpp:1441
#46 0x00007f14a539cb59 in QGraphicsScene::mousePressEvent (this=<optimized out>, mouseEvent=0x7ffc4c27ab40) at graphicsview/qgraphicsscene.cpp:4020
#47 0x00007f14a53a60e0 in QGraphicsScene::event (this=0x297bb80, event=0x7ffc4c27ab40) at graphicsview/qgraphicsscene.cpp:3388
#48 0x00007f14a506f05c in QApplicationPrivate::notify_helper (this=this@entry=0x25bbfa0, receiver=receiver@entry=0x297bb80, e=e@entry=0x7ffc4c27ab40) at kernel/qapplication.cpp:3716
#49 0x00007f14a5074516 in QApplication::notify (this=0x7ffc4c27b990, receiver=0x297bb80, e=0x7ffc4c27ab40) at kernel/qapplication.cpp:3499
#50 0x00007f14a456c62b in QCoreApplication::notifyInternal (this=0x7ffc4c27b990, receiver=0x297bb80, event=event@entry=0x7ffc4c27ab40) at kernel/qcoreapplication.cpp:965
#51 0x00007f14a506b756 in QCoreApplication::sendSpontaneousEvent (event=event@entry=0x7ffc4c27ab40, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#52 qt_sendSpontaneousEvent (receiver=<optimized out>, event=event@entry=0x7ffc4c27ab40) at kernel/qapplication.cpp:4163
#53 0x00007f14a53bfabf in QGraphicsView::mousePressEvent (this=0x297bc40, event=0x7ffc4c27b0d0) at graphicsview/qgraphicsview.cpp:3270
#54 0x00007f14a50b23cf in QWidget::event (this=this@entry=0x297bc40, event=event@entry=0x7ffc4c27b0d0) at kernel/qwidget.cpp:8674
#55 0x00007f14a51b0b5e in QFrame::event (this=0x297bc40, e=0x7ffc4c27b0d0) at widgets/qframe.cpp:540
#56 0x00007f14a53c0eb3 in QGraphicsView::viewportEvent (this=0x297bc40, event=0x7ffc4c27b0d0) at graphicsview/qgraphicsview.cpp:2962
#57 0x00007f14a456c412 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x25bbfa0, receiver=receiver@entry=0x29de5b0, event=event@entry=0x7ffc4c27b0d0) at kernel/qcoreapplication.cpp:1072
#58 0x00007f14a506f03c in QApplicationPrivate::notify_helper (this=this@entry=0x25bbfa0, receiver=receiver@entry=0x29de5b0, e=e@entry=0x7ffc4c27b0d0) at kernel/qapplication.cpp:3712
#59 0x00007f14a5074c19 in QApplication::notify (this=<optimized out>, receiver=0x29de5b0, e=0x7ffc4c27b0d0) at kernel/qapplication.cpp:3276
#60 0x00007f14a456c62b in QCoreApplication::notifyInternal (this=0x7ffc4c27b990, receiver=receiver@entry=0x29de5b0, event=event@entry=0x7ffc4c27b0d0) at kernel/qcoreapplication.cpp:965
#61 0x00007f14a5073b32 in QCoreApplication::sendSpontaneousEvent (event=0x7ffc4c27b0d0, receiver=0x29de5b0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#62 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x29de5b0, event=event@entry=0x7ffc4c27b0d0, alienWidget=alienWidget@entry=0x29de5b0, nativeWidget=0x267c360, buttonDown=buttonDown@entry=0x7f14a559fb20 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:2770
#63 0x00007f14a50cc57b in QWidgetWindow::handleMouseEvent (this=this@entry=0x28cd220, event=event@entry=0x7ffc4c27b4e0) at kernel/qwidgetwindow.cpp:555
#64 0x00007f14a50ceb3b in QWidgetWindow::event (this=0x28cd220, event=0x7ffc4c27b4e0) at kernel/qwidgetwindow.cpp:210
#65 0x00007f14a506f05c in QApplicationPrivate::notify_helper (this=this@entry=0x25bbfa0, receiver=receiver@entry=0x28cd220, e=e@entry=0x7ffc4c27b4e0) at kernel/qapplication.cpp:3716
#66 0x00007f14a5074516 in QApplication::notify (this=0x7ffc4c27b990, receiver=0x28cd220, e=0x7ffc4c27b4e0) at kernel/qapplication.cpp:3499
#67 0x00007f14a456c62b in QCoreApplication::notifyInternal (this=0x7ffc4c27b990, receiver=receiver@entry=0x28cd220, event=event@entry=0x7ffc4c27b4e0) at kernel/qcoreapplication.cpp:965
#68 0x00007f14a4abe521 in QCoreApplication::sendSpontaneousEvent (event=0x7ffc4c27b4e0, receiver=0x28cd220) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#69 QGuiApplicationPrivate::processMouseEvent (e=0x2e9b500) at kernel/qguiapplication.cpp:1804
#70 0x00007f14a4ac01e5 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x2e9b500) at kernel/qguiapplication.cpp:1596
#71 0x00007f14a4aa3f38 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:625
#72 0x00007f14958c0f10 in userEventSourceDispatch (source=<optimized out>) at eventdispatchers/qeventdispatcher_glib.cpp:70
#73 0x00007f149ffae127 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#74 0x00007f149ffae380 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#75 0x00007f149ffae42c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#76 0x00007f14a45c2a7f in QEventDispatcherGlib::processEvents (this=0x260c280, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#77 0x00007f14a4569dea in QEventLoop::exec (this=this@entry=0x7ffc4c27b860, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#78 0x00007f14a4571e8c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1229
#79 0x00007f14a9ae5e2b in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#80 0x00007f14a96df830 in __libc_start_main (main=0x400710 <main>, argc=2, argv=0x7ffc4c27bb18, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc4c27bb08) at ../csu/libc-start.c:291
#81 0x0000000000400749 in _start ()

Possible duplicates by query: bug 357040, bug 356893.

Reported using DrKonqi