[Bug 222916] New: Drag and dropping an event several times in a row crashes Kontact

[Sabine Faure]

https://bugs.kde.org/show_bug.cgi?id=222916

           Summary: Drag and dropping an event several times in a row
                    crashes Kontact
           Product: kontact
           Version: 4.4 rc1
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: NEW
          Severity: crash
          Priority: NOR
         Component: general
        AssignedTo: kdepim-bugs at kde.org
        ReportedBy: sabine at kdab.net


Application: kontact (4.4 rc1)
KDE Platform Version: 4.3.90 (KDE 4.3.90 (KDE 4.4 RC1))
Qt Version: 4.6.0
Operating System: Linux 2.6.27-16-generic i686
Distribution: Ubuntu 8.10

-- Information about the crash:
- Launch Kontact and go to KOrganizer
- Create a new event if you do not have an existing one already
- Drag and drop the event several time rather quickly

Kontact crashes (see backtrace underneath) unless you move the event quite
slowly.

Akonadi-ports Branch, Svn Rev 1075014



The crash can be reproduced every time.

 -- Backtrace:
Application: Kontact (kontact), signal: Aborted
[Current thread is 0 (LWP 7602)]

Thread 2 (Thread 0xaeccdb90 (LWP 7607)):
#0  0xb7fc1430 in __kernel_vsyscall ()
#1  0xb5e4d075 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/tls/i686/cmov/libpthread.so.0
#2  0xaf121855 in WTF::TCMalloc_PageHeap::scavengerThread () from
/d/qt/4/kde-qt/lib/libQtWebKit.so.4
#3  0xaf1218bf in WTF::TCMalloc_PageHeap::runScavengerThread () from
/d/qt/4/kde-qt/lib/libQtWebKit.so.4
#4  0xb5e4950f in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb5294a0e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb3c496c0 (LWP 7602)):
[KCrash Handler]
#6  0xb7fc1430 in __kernel_vsyscall ()
#7  0xb51de8a0 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb51e0268 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb5ee894e in qt_message_output (msgType=QtFatalMsg, buf=0x9132258 "ASSERT:
\"! d->m_changes.contains( item.id() )\" in file
/d/kde/src/t/kdepim/korganizer/incidencechanger.cpp, line 81")
    at global/qglobal.cpp:2226
#10 0xb5ee89ee in qt_message (msgType=QtFatalMsg, msg=0xb6065608 "ASSERT:
\"%s\" in file %s, line %d", ap=0xbff58304 "��ϰ��ϰQ") at
global/qglobal.cpp:2272
#11 0xb5ee8a24 in qFatal (msg=0xb6065608 "ASSERT: \"%s\" in file %s, line %d")
at global/qglobal.cpp:2455
#12 0xb5ee8c78 in qt_assert (assertion=0xb0cfebc8 "! d->m_changes.contains(
item.id() )", file=0xb0cfe6f0
"/d/kde/src/t/kdepim/korganizer/incidencechanger.cpp", line=81) at
global/qglobal.cpp:1989
#13 0xb0c76568 in IncidenceChanger::beginChange (this=0x8e2b238,
item=@0x9101420) at /d/kde/src/t/kdepim/korganizer/incidencechanger.cpp:81
#14 0xb0b7ca96 in KOAgenda::performItemAction (this=0x8e4df70,
viewportPos=@0xbff585b4) at
/d/kde/src/t/kdepim/korganizer/views/agendaview/koagenda.cpp:854
#15 0xb0b7e028 in KOAgenda::eventFilter_mouse (this=0x8e4df70,
object=0x91013d0, me=0xbff58b48) at
/d/kde/src/t/kdepim/korganizer/views/agendaview/koagenda.cpp:595
#16 0xb0b7a5ed in KOAgenda::eventFilter (this=0x8e4df70, object=0x91013d0,
event=0xbff58b48) at
/d/kde/src/t/kdepim/korganizer/views/agendaview/koagenda.cpp:375
#17 0xb5ff28a2 in QCoreApplicationPrivate::sendThroughObjectEventFilters
(this=0x8288608, receiver=0x91013d0, event=0xbff58b48) at
kernel/qcoreapplication.cpp:819
#18 0xb55cb61d in QApplicationPrivate::notify_helper (this=0x8288608,
receiver=0x91013d0, e=0xbff58b48) at kernel/qapplication.cpp:4238
#19 0xb55cc346 in QApplication::notify (this=0xbff59454, receiver=0x91013d0,
e=0xbff58b48) at kernel/qapplication.cpp:3822
#20 0xb65b06c3 in KApplication::notify (this=0xbff59454, receiver=0x91013d0,
event=0xbff58b48) at /d/kde/src/t/kdelibs/kdeui/kernel/kapplication.cpp:302
#21 0xb5ff465d in QCoreApplication::notifyInternal (this=0xbff59454,
receiver=0x91013d0, event=0xbff58b48) at kernel/qcoreapplication.cpp:704
#22 0xb71e6d21 in QCoreApplication::sendSpontaneousEvent () from
/d/qt/4/kde-qt/lib/libQt3Support.so.4
#23 0xb55d183d in QApplicationPrivate::sendMouseEvent (receiver=0x91013d0,
event=0xbff58b48, alienWidget=0x91013d0, nativeWidget=0x838fab8,
buttonDown=0xb5e40440, lastMouseReceiver=@0xb5e40444, 
    spontaneous=true) at kernel/qapplication.cpp:2954
#24 0xb566a43f in QETWidget::translateMouseEvent (this=0x838fab8,
event=0xbff5916c) at kernel/qapplication_x11.cpp:4368
#25 0xb566b4ee in QApplication::x11ProcessEvent (this=0xbff59454,
event=0xbff5916c) at kernel/qapplication_x11.cpp:3379
#26 0xb5699856 in x11EventSourceDispatch (s=0x8290398, callback=0,
user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#27 0xb4231718 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#28 0xb4234dc3 in ?? () from /usr/lib/libglib-2.0.so.0
#29 0xb4234f81 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#30 0xb6025a5a in QEventDispatcherGlib::processEvents (this=0x8286a18, flags={i
= -1074425036}) at kernel/qeventdispatcher_glib.cpp:407
#31 0xb569904e in QGuiEventDispatcherGlib::processEvents (this=0x8286a18,
flags={i = -1074424988}) at kernel/qguieventdispatcher_glib.cpp:202
#32 0xb5ff134a in QEventLoop::processEvents (this=0xbff593f0, flags={i =
-1074424916}) at kernel/qeventloop.cpp:149
#33 0xb5ff15bb in QEventLoop::exec (this=0xbff593f0, flags={i = -1074424840})
at kernel/qeventloop.cpp:197
#34 0xb5ff4e35 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#35 0xb55cdfd6 in QApplication::exec () at kernel/qapplication.cpp:3570
#36 0x0804ba07 in main (argc=) at /d/kde/src/t/kdepim/kontact/src/main.cpp:221

Reported using DrKonqi

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