[kde] [Bug 349722] New: Crash on accidental application pinning/selection

Mon Jun 29 19:39:18 BST 2015

https://bugs.kde.org/show_bug.cgi?id=349722

            Bug ID: 349722
           Summary: Crash on accidental application pinning/selection
           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: smaudet at my.trine.edu

Application: plasma-desktop (4.11.18)
KDE Platform Version: 4.14.7
Qt Version: 4.8.6
Operating System: Linux 3.18.7-100.fc20.x86_64 x86_64
Distribution: "Fedora release 20 (Heisenbug)"

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

Accidental dragging of an application in the kde taskbar, created a bookmarked
area, couldn't select the application further, then the crash occured.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81    T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f91ff9168c0 (LWP 18584))]

Thread 3 (Thread 0x7f91cb87a700 (LWP 18585)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f91e7e2bf0b in QTWTF::TCMalloc_PageHeap::scavengerThread
(this=0x7f91e812af00 <QTWTF::pageheap_memory>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f91e7e2bf49 in QTWTF::TCMalloc_PageHeap::runScavengerThread
(context=<optimized out>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f91fdf1bee5 in start_thread (arg=0x7f91cb87a700) at
pthread_create.c:309
#4  0x00007f91fc4ecd1d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f914514a700 (LWP 18586)):
#0  0x00007f91fc4e28ad in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f91f8be75b4 in g_main_context_poll (priority=2147483647, n_fds=1,
fds=0x7f9140002bb0, timeout=-1, context=0x7f91400009a0) at gmain.c:4007
#2  g_main_context_iterate (context=context at entry=0x7f91400009a0,
block=block at entry=1, dispatch=dispatch at entry=1, self=<optimized out>) at
gmain.c:3708
#3  0x00007f91f8be76dc in g_main_context_iteration (context=0x7f91400009a0,
may_block=1) at gmain.c:3774
#4  0x00007f91fe2e64ee in QEventDispatcherGlib::processEvents
(this=0x7f91400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#5  0x00007f91fe2b643f in QEventLoop::processEvents
(this=this at entry=0x7f9145149cc0, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f91fe2b678d in QEventLoop::exec (this=this at entry=0x7f9145149cc0,
flags=...) at kernel/qeventloop.cpp:204
#7  0x00007f91fe1aaedf in QThread::exec (this=this at entry=0x298f710) at
thread/qthread.cpp:538
#8  0x00007f91fe296e93 in QInotifyFileSystemWatcherEngine::run (this=0x298f710)
at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007f91fe1ad71f in QThreadPrivate::start (arg=0x298f710) at
thread/qthread_unix.cpp:349
#10 0x00007f91fdf1bee5 in start_thread (arg=0x7f914514a700) at
pthread_create.c:309
#11 0x00007f91fc4ecd1d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f91ff9168c0 (LWP 18584)):
[KCrash Handler]
#6  ref (this=0x7f91fe618a90 <vtable for QObjectPrivate+16>) at
../../src/corelib/arch/qatomic_x86_64.h:121
#7  QUrl::operator= (this=this at entry=0x52eb9f0, url=...) at io/qurl.cpp:6163
#8  0x00007f91e76ba86f in QDeclarativeError::operator= (this=0x7ffff34a58a0,
other=...) at qml/qdeclarativeerror.cpp:117
#9  0x00007f91e76675d4 in QDeclarativeExpression::error (this=<optimized out>)
at qml/qdeclarativeexpression.cpp:794
#10 0x00007f91e76a311b in QDeclarativeBoundSignal::qt_metacall (this=0x5aa60b0,
c=<optimized out>, id=<optimized out>, a=0x7ffff34a5a40) at
qml/qdeclarativeboundsignal.cpp:201
#11 0x00007f91fe2cc644 in QMetaObject::activate (sender=0x6021440, m=<optimized
out>, local_signal_index=<optimized out>, argv=0x7ffff34a5a40) at
kernel/qobject.cpp:3597
#12 0x00007f914a4a5ab5 in
MouseEventListener::mouseMoveEvent(QGraphicsSceneMouseEvent*) () from
/usr/lib64/kde4/imports/org/kde/qtextracomponents/libqtextracomponentsplugin.so
#13 0x00007f91fd9d5a37 in QGraphicsItem::sceneEvent (this=0x6021450,
event=0x7ffff34a5f80) at graphicsview/qgraphicsitem.cpp:6749
#14 0x00007f91e75fc204 in QDeclarativeItem::sceneEvent (this=0x6021440,
event=0x7ffff34a5f80) at graphicsitems/qdeclarativeitem.cpp:3047
#15 0x00007f91fd9fe71f in QGraphicsScenePrivate::sendMouseEvent
(this=0x21f5590, mouseEvent=0x7ffff34a5f80) at
graphicsview/qgraphicsscene.cpp:1295
#16 0x00007f91fda07a66 in QGraphicsScene::mouseMoveEvent (this=<optimized out>,
mouseEvent=0x7ffff34a5f80) at graphicsview/qgraphicsscene.cpp:4102
#17 0x00007f91fda13cac in QGraphicsScene::event (this=0x21f4e70,
event=0x7ffff34a5f80) at graphicsview/qgraphicsscene.cpp:3451
#18 0x00007f91fd3fde6c in QApplicationPrivate::notify_helper (this=0x209df30,
receiver=0x21f4e70, e=0x7ffff34a5f80) at kernel/qapplication.cpp:4565
#19 0x00007f91fd4047c5 in QApplication::notify (this=this at entry=0x2099d70,
receiver=receiver at entry=0x21f4e70, e=e at entry=0x7ffff34a5f80) at
kernel/qapplication.cpp:4351
#20 0x00007f91ff3096ea in KApplication::notify (this=0x2099d70,
receiver=0x21f4e70, event=0x7ffff34a5f80) at
/usr/src/debug/kdelibs-4.14.7/kdeui/kernel/kapplication.cpp:311
#21 0x00007f91fe2b79ad in QCoreApplication::notifyInternal (this=0x2099d70,
receiver=0x21f4e70, event=event at entry=0x7ffff34a5f80) at
kernel/qcoreapplication.cpp:953
#22 0x00007f91fd3fc6f6 in sendSpontaneousEvent
(event=event at entry=0x7ffff34a5f80, receiver=<optimized out>) at
../../src/corelib/kernel/qcoreapplication.h:234
#23 qt_sendSpontaneousEvent (receiver=<optimized out>,
event=event at entry=0x7ffff34a5f80) at kernel/qapplication.cpp:5563
#24 0x00007f91fda29eb4 in QGraphicsViewPrivate::mouseMoveEventHandler
(this=this at entry=0x2a62b60, event=event at entry=0x7ffff34a6680) at
graphicsview/qgraphicsview.cpp:646
#25 0x00007f91fda2af3a in QGraphicsView::mouseMoveEvent (this=0x2a62b30,
event=0x7ffff34a6680) at graphicsview/qgraphicsview.cpp:3276
#26 0x00007f91fd450ca6 in QWidget::event (this=this at entry=0x2a62b30,
event=event at entry=0x7ffff34a6680) at kernel/qwidget.cpp:8374
#27 0x00007f91fd807aae in QFrame::event (this=0x2a62b30, e=0x7ffff34a6680) at
widgets/qframe.cpp:557
#28 0x00007f91fda2c669 in QGraphicsView::viewportEvent (this=0x2a62b30,
event=0x7ffff34a6680) at graphicsview/qgraphicsview.cpp:2866
#29 0x00007f91fe2b7b16 in
QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<optimized out>,
receiver=0x2a78970, event=0x7ffff34a6680) at kernel/qcoreapplication.cpp:1063
#30 0x00007f91fd3fde4c in QApplicationPrivate::notify_helper (this=0x209df30,
receiver=0x2a78970, e=0x7ffff34a6680) at kernel/qapplication.cpp:4561
#31 0x00007f91fd404901 in QApplication::notify (this=this at entry=0x2099d70,
receiver=receiver at entry=0x2a78970, e=e at entry=0x7ffff34a6680) at
kernel/qapplication.cpp:4108
#32 0x00007f91ff3096ea in KApplication::notify (this=0x2099d70,
receiver=0x2a78970, event=0x7ffff34a6680) at
/usr/src/debug/kdelibs-4.14.7/kdeui/kernel/kapplication.cpp:311
#33 0x00007f91fe2b79ad in QCoreApplication::notifyInternal (this=0x2099d70,
receiver=0x2a78970, event=0x7ffff34a6680) at kernel/qcoreapplication.cpp:953
#34 0x00007f91fd404077 in QApplicationPrivate::sendMouseEvent
(receiver=0x2a78970, event=0x7ffff34a6680, alienWidget=0x2a78970,
nativeWidget=0x260fd60, buttonDown=<optimized out>, lastMouseReceiver=...,
spontaneous=true) at ../../src/corelib/kernel/qcoreapplication.h:231
#35 0x00007f91fd479a0c in QETWidget::translateMouseEvent (this=0x260fd60,
event=<optimized out>) at kernel/qapplication_x11.cpp:4474
#36 0x00007f91fd47814c in QApplication::x11ProcessEvent (this=0x2099d70,
event=event at entry=0x7ffff34a69c0) at kernel/qapplication_x11.cpp:3663
#37 0x00007f91fd49fb54 in x11EventSourceDispatch (s=s at entry=0x20acfe0,
callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#38 0x00007f91f8be72a6 in g_main_dispatch (context=0x208d9c0) at gmain.c:3066
#39 g_main_context_dispatch (context=context at entry=0x208d9c0) at gmain.c:3642
#40 0x00007f91f8be7628 in g_main_context_iterate
(context=context at entry=0x208d9c0, block=block at entry=1,
dispatch=dispatch at entry=1, self=<optimized out>) at gmain.c:3713
#41 0x00007f91f8be76dc in g_main_context_iteration (context=0x208d9c0,
may_block=1) at gmain.c:3774
#42 0x00007f91fe2e64ce in QEventDispatcherGlib::processEvents (this=0x209dc80,
flags=...) at kernel/qeventdispatcher_glib.cpp:450
#43 0x00007f91fd49fcd6 in QGuiEventDispatcherGlib::processEvents
(this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#44 0x00007f91fe2b643f in QEventLoop::processEvents
(this=this at entry=0x7ffff34a6db0, flags=...) at kernel/qeventloop.cpp:149
#45 0x00007f91fe2b678d in QEventLoop::exec (this=this at entry=0x7ffff34a6db0,
flags=...) at kernel/qeventloop.cpp:204
#46 0x00007f91fe2bbe59 in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1225
#47 0x00007f91fd3fc4ec in QApplication::exec () at kernel/qapplication.cpp:3823
#48 0x00007f91df056934 in kdemain (argc=1, argv=0x1fa06b0) at
/usr/src/debug/kde-workspace-4.11.18/plasma/desktop/shell/main.cpp:126
#49 0x00000000004082bd in launch (argc=argc at entry=1,
_name=_name at entry=0x1fd3c68 "/usr/bin/plasma-desktop",
args=args at entry=0x1fd3c80 "", cwd=cwd at entry=0x0, envc=envc at entry=0,
envs=<optimized out>, envs at entry=0x1fd3c88 "", reset_env=false,
tty=tty at entry=0x0, avoid_loops=false,
startup_id_str=startup_id_str at entry=0x40ab0e "0") at
/usr/src/debug/kdelibs-4.14.7/kinit/kinit.cpp:726
#50 0x000000000040918b in handle_launcher_request (sock=8, who=<optimized out>)
at /usr/src/debug/kdelibs-4.14.7/kinit/kinit.cpp:1218
#51 0x00000000004097e1 in handle_requests (waitForPid=waitForPid at entry=0) at
/usr/src/debug/kdelibs-4.14.7/kinit/kinit.cpp:1411
#52 0x000000000040531d in main (argc=4, argv=<optimized out>,
envp=0x7ffff34a7a10) at /usr/src/debug/kdelibs-4.14.7/kinit/kinit.cpp:1899

Reported using DrKonqi

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