Bug 363803

Summary:	kwin closes and reopens again after opening any GTK program
Product:	[Plasma] kwin	Reporter:	Rumbler <rumbler.soppa>
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED DUPLICATE
Severity:	crash	CC:	rumbler.soppa
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.6.3
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Rumbler 2016-06-01 16:10:47 UTC

Application: kwin_x11 (5.6.3)
 (Compiled from sources)
Qt Version: 5.6.0
Frameworks Version: 5.21.0
Operating System: Linux 4.4.8 x86_64
Distribution (Platform): Slackware Packages

-- Information about the crash:
I was open VirtualBox program to open its settings and applies them the error happens, just only press the ok the screen flashes kwin closes and a few seconds it opens again and comes to Feedback kde an application unexpectedly closed.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdb3e029800 (LWP 1548))]

Thread 6 (Thread 0x7fdb2419c700 (LWP 1568)):
#0  0x00007fdb32d7730d in poll () at /lib64/libc.so.6
#1  0x00007fdb33de0102 in  () at /usr/lib64/libxcb.so.1
#2  0x00007fdb33de1c8f in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007fdb24c7ae59 in  () at /usr/lib64/qt5/plugins/platforms/../../../libQt5XcbQpa.so.5
#4  0x00007fdb3409d509 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007fdb3647c684 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fdb32d82efd in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fdb22550700 (LWP 1591)):
#0  0x00007fdb32d79083 in select () at /lib64/libc.so.6
#1  0x00007fdb342ae3ff in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fdb342afc94 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fdb342b0142 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fdb3425e62a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fdb3409895c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fdb35daa0f5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007fdb3409d509 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fdb3647c684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fdb32d82efd in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fdb13fff700 (LWP 1622)):
#0  0x00007fdb32d79083 in select () at /lib64/libc.so.6
#1  0x00007fdb342ae3ff in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fdb342afc94 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fdb342b0142 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fdb3425e62a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fdb3409895c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fdb3ba41c15 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fdb3409d509 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fdb3647c684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fdb32d82efd in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fdb0bfff700 (LWP 1635)):
#0  0x00007fdb3648236f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fdb3cdc6434 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fdb3cdc6479 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fdb3647c684 in start_thread () at /lib64/libpthread.so.0
#4  0x00007fdb32d82efd in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fda8009d700 (LWP 1812)):
#0  0x00007fdb32d79083 in select () at /lib64/libc.so.6
#1  0x00007fdb342ae3ff in qt_safe_select(int, fd_set*, fd_set*, fd_set*, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fdb342afc94 in QEventDispatcherUNIXPrivate::doSelect(QFlags<QEventLoop::ProcessEventsFlag>, timespec*) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fdb342b0142 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fdb3425e62a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007fdb3409895c in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007fdb3ba41c15 in  () at /usr/lib64/libQt5Qml.so.5
#7  0x00007fdb3409d509 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007fdb3647c684 in start_thread () at /lib64/libpthread.so.0
#9  0x00007fdb32d82efd in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fdb3e029800 (LWP 1548)):
[KCrash Handler]
#6  0x00000074006c0075 in  ()
#7  0x00007fdb34290de0 in QObject::connect(QObject const*, char const*, QObject const*, char const*, Qt::ConnectionType) () at /usr/lib64/libQt5Core.so.5
#8  0x00007fdb3ce07b17 in  () at /usr/lib64/libQt5Script.so.5
#9  0x00007fdb3ce07bdf in  () at /usr/lib64/libQt5Script.so.5
#10 0x00007fdb3ce07e72 in QScriptEngine::newQObject(QObject*, QScriptEngine::ValueOwnership, QFlags<QScriptEngine::QObjectWrapOption> const&) () at /usr/lib64/libQt5Script.so.5
#11 0x00007fdb3d99e49c in  () at /usr/lib64/libkwin.so.5
#12 0x00007fdb3ce08155 in  () at /usr/lib64/libQt5Script.so.5
#13 0x00007fdb3ce2f2b3 in  () at /usr/lib64/libQt5Script.so.5
#14 0x00007fdb3ce37915 in  () at /usr/lib64/libQt5Script.so.5
#15 0x00007fdb3428aee0 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#16 0x00007fdb3d5e9c58 in KWin::EffectsHandler::desktopPresenceChanged(KWin::EffectWindow*, int, int) () at /usr/lib64/libkwineffects.so.8
#17 0x00007fdb3d5ea960 in  () at /usr/lib64/libkwineffects.so.8
#18 0x00007fdb3428bad1 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#19 0x00007fdb34fb756c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#20 0x00007fdb34fbc446 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#21 0x00007fdb34260328 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#22 0x00007fdb3426210a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#23 0x00007fdb342b0032 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#24 0x00007fdb24ce954d in  () at /usr/lib64/qt5/plugins/platforms/../../../libQt5XcbQpa.so.5
#25 0x00007fdb3425e62a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#26 0x00007fdb342666dd in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#27 0x00007fdb3dca1016 in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#28 0x00007fdb32c9c7d0 in __libc_start_main () at /lib64/libc.so.6
#29 0x0000000000400c59 in _start ()

Reported using DrKonqi

Comment 1 Thomas Lübking 2016-06-01 16:25:27 UTC

99% chance a dupe, otherwise (in case it happens once the other bug is fixed) install debug packages for a better backtrace (presented one lacks debug symbols)

virtualbox is btw. not a gtk application and the problem is that something™ changes the virtual desktop.

*** This bug has been marked as a duplicate of bug 363224 ***