Bug 283023

Summary: KWin crashed when windows were stacked
Product: [Plasma] kwin Reporter: vans9 <vans9>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash    
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Compiled Sources   
OS: FreeBSD   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description vans9 2011-09-29 11:09:02 UTC 
Application: kwin (4.6.5 (4.6.5))
KDE Platform Version: 4.6.5 (4.6.5) (Compiled from sources)
Qt Version: 4.7.3
Operating System: FreeBSD 8.2-STABLE amd64
Distribution (Platform): FreeBSD Ports

-- Information about the crash:
- What I was doing when the application crashed:
Two windows were stacked - pidgin chat window and skype chat window. I've switched to another desktop with the keyboard then switched back. KWin crashed.
- Custom settings of the application:
Just windows of two applications were stacked: skype and pidgin. Nothing special. Window decoration theme is glowglass. And I have BorderlessMaximizedWindows=true in my kwinrc.

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault: 11
[Current thread is 1 (Thread 80d3d5f40 (LWP 100184/kwin))]

Thread 3 (Thread 80d2041c0 (LWP 100139/initial thread)):
[KCrash Handler]
#7  0x000000080d3828e0 in ?? ()
#8  0x00000008012b2498 in Plasma::Corona::popupPosition () from /usr/local/kde4/lib/libplasma.so.3
#9  0x000000080138f4b8 in Plasma::ToolTipManager::hide () from /usr/local/kde4/lib/libplasma.so.3
#10 0x000000080138f955 in Plasma::ToolTipManager::qt_metacall () from /usr/local/kde4/lib/libplasma.so.3
#11 0x0000000802580b2a in QMetaObject::activate () from /usr/local/lib/qt4/libQtCore.so.4
#12 0x000000080257cbf5 in QObject::event () from /usr/local/lib/qt4/libQtCore.so.4
#13 0x0000000802a4ecdf in QApplicationPrivate::notify_helper () from /usr/local/lib/qt4/libQtGui.so.4
#14 0x0000000802a55ccb in QApplication::notify () from /usr/local/lib/qt4/libQtGui.so.4
#15 0x00000008019bc442 in KApplication::notify () from /usr/local/kde4/lib/libkdeui.so.7
#16 0x00000008006a77e1 in ?? () from /usr/local/kde4/lib/libkdeinit4_kwin.so
#17 0x000000080256c134 in QCoreApplication::notifyInternal () from /usr/local/lib/qt4/libQtCore.so.4
#18 0x0000000802599185 in QTimerInfoList::activateTimers () from /usr/local/lib/qt4/libQtCore.so.4
#19 0x0000000802599ed9 in QEventDispatcherUNIX::processEvents () from /usr/local/lib/qt4/libQtCore.so.4
#20 0x0000000802af92e9 in QEventDispatcherX11::processEvents () from /usr/local/lib/qt4/libQtGui.so.4
#21 0x000000080256b663 in QEventLoop::processEvents () from /usr/local/lib/qt4/libQtCore.so.4
#22 0x000000080256b883 in QEventLoop::exec () from /usr/local/lib/qt4/libQtCore.so.4
#23 0x000000080256d33e in QCoreApplication::exec () from /usr/local/lib/qt4/libQtCore.so.4
#24 0x00000008006aa332 in kdemain () from /usr/local/kde4/lib/libkdeinit4_kwin.so
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#842 0x61636f6c2f727375 in ?? ()
#843 0x622f3465646b2f6c in ?? ()
#844 0x006e69776b2f6e69 in ?? ()
#845 0x247c8d48002454ff in ?? ()
#846 0x01a1c0c748006a10 in ?? ()
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#848 0x9066669066669066 in ?? ()
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#850 0x0000000000000003 in ?? ()
#851 0x00007fffffffe660 in ?? ()
#852 0x0000000000000029 in ?? ()

Thread 2 (Thread 80d3d3700 (LWP 100183/kwin)):
#0  0x0000000804d0722c in kevent () from /lib/libc.so.7
#1  0x000000080254e62d in QKqueueFileSystemWatcherEngine::run () from /usr/local/lib/qt4/libQtCore.so.4
#2  0x000000080247dffc in QThreadPrivate::start () from /usr/local/lib/qt4/libQtCore.so.4
#3  0x0000000804b252d1 in pthread_getprio () from /lib/libthr.so.3
#4  0x0000000000000000 in ?? ()

Thread 1 (Thread 80d3d5f40 (LWP 100184/kwin)):
#0  0x0000000804b2e05c in __error () from /lib/libthr.so.3
#1  0x0000000804b2c52e in pthread_cond_signal () from /lib/libthr.so.3
#2  0x0000000800ba31c9 in QTWTF::TCMalloc_PageHeap::scavengerThread () from /usr/local/lib/qt4/libQtScript.so.4
#3  0x0000000800ba3203 in QTWTF::TCMalloc_PageHeap::runScavengerThread () from /usr/local/lib/qt4/libQtScript.so.4
#4  0x0000000804b252d1 in pthread_getprio () from /lib/libthr.so.3
#5  0x0000000000000000 in ?? ()

Reported using DrKonqi
Comment 1 Thomas Lübking 2011-09-29 14:07:40 UTC 
please notice that in general this kind of backtrace is not sufficient for bugreports:
http://techbase.kde.org/Development/Tutorials/Debugging/How_to_create_useful_crash_reports#Backtraces

*** This bug has been marked as a duplicate of bug 258925 ***