Bug 397426

Summary: kwin crash when desktop swtich OSD is turned on
Product: [Plasma] kwin Reporter: imad <imaduddinh>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: crash Keywords: drkonqi, triaged
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description imad 2018-08-13 16:29:25 UTC 
Application: kwin_x11 (5.13.4)

Qt Version: 5.11.1
Frameworks Version: 5.48.0
Operating System: Linux 4.14.62-1-lts x86_64
Distribution (Platform): Archlinux Packages

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

Set number of virtual desktops > 1 (currently 2). Turn on desktop switch on-screen display in system settings.  Disable transition effects when switching desktop. 
Now press the keyboard shortcut to switch desktops repeatedly a few times.

- Unusual behavior I noticed:
kwin crashes. Only window in foreground responds to mouse/kb input. Keyboard shortcuts  related to window/desktop management stop working. Need to run 'kwin_x11 --replace' to get a working gui again.

- Custom settings of the application:

+ Compositor is enabled
+ Desktop switch OSD is turned on in settings
+ Using Nvidia propreitary drivers

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbcd050d6c0 (LWP 7533))]

Thread 6 (Thread 0x7fbcabf94700 (LWP 7540)):
#0  0x00007fbcdf8b2aec in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbce297eaac in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fbce297eac9 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fbcdf8aca8d in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbce5e79823 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fbcb1655700 (LWP 7539)):
#0  0x00007fbcdf8b2ee6 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbce366669d in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbce365e0c4 in  () at /usr/lib/libQt5Core.so.5
#3  0x00007fbce3666005 in  () at /usr/lib/libQt5Core.so.5
#4  0x00007fbcdf8aca8d in start_thread () at /usr/lib/libpthread.so.0
#5  0x00007fbce5e79823 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fbcc63e1700 (LWP 7537)):
#0  0x00007fbce5e6ea86 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fbce386337b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbce386486b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fbce3812dac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbce365bf59 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fbcde4ed9c9 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fbce3666005 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fbcdf8aca8d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fbce5e79823 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fbcc7fff700 (LWP 7536)):
#0  0x00007fbcdf8b2ee6 in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbce366669d in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbce365e0c4 in  () at /usr/lib/libQt5Core.so.5
#3  0x00007fbce3666005 in  () at /usr/lib/libQt5Core.so.5
#4  0x00007fbcdf8aca8d in start_thread () at /usr/lib/libpthread.so.0
#5  0x00007fbce5e79823 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fbcccf4b700 (LWP 7535)):
#0  0x00007fbce5e6ea86 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fbce386337b in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbce386486b in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fbce3812dac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbce365bf59 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fbcdd5dcba6 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007fbce3666005 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fbcdf8aca8d in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fbce5e79823 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fbcd050d6c0 (LWP 7533)):
[KCrash Handler]
#6  0x00007fbce2f89c39 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#7  0x00007fbce2f89cf6 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#8  0x00007fbce2f8b2e8 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#9  0x00007fbce2f8bd02 in  () at /usr/lib/libkwin4_effect_builtins.so.1
#10 0x00007fbce59fdcc4 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#11 0x00007fbce2ef857a in  () at /usr/lib/libkwin4_effect_builtins.so.1
#12 0x00007fbce59fdcc4 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#13 0x00007fbce59e9cad in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#14 0x00007fbce59fdb55 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#15 0x00007fbce31ef32d in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.11
#16 0x00007fbce59fdaf4 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#17 0x00007fbce31ef32d in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwineffects.so.11
#18 0x00007fbce59fdaf4 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/libkwin.so.5
#19 0x00007fbce59f02b3 in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () at /usr/lib/libkwin.so.5
#20 0x00007fbce59ec967 in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib/libkwin.so.5
#21 0x00007fbcc4f88a04 in  () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#22 0x00007fbce59ef841 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#23 0x00007fbce59fd8a7 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#24 0x00007fbce31ef282 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.11
#25 0x00007fbce59fd84e in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#26 0x00007fbce31ef282 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwineffects.so.11
#27 0x00007fbce59fd84e in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/libkwin.so.5
#28 0x00007fbce59ef4db in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at /usr/lib/libkwin.so.5
#29 0x00007fbcc4f90037 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/qt/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#30 0x00007fbce59e0d6e in KWin::Compositor::performCompositing() () at /usr/lib/libkwin.so.5
#31 0x00007fbce383e7eb in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#32 0x00007fbce418ee14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#33 0x00007fbce41966e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#34 0x00007fbce3814119 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#35 0x00007fbce386687a in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#36 0x00007fbce38649be in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#37 0x00007fbcd01415ce in  () at /usr/lib/libQt5XcbQpa.so.5
#38 0x00007fbce3812dac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#39 0x00007fbce381b0a6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#40 0x00007fbce5f4ab56 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#41 0x00007fbce5da2003 in __libc_start_main () at /usr/lib/libc.so.6
#42 0x000055798164a75a in _start ()

Reported using DrKonqi
Comment 1 Martin Flöser 2018-08-13 19:40:53 UTC 
Unfortunately the backtrace is lacking debug symbols. If you are able to reproduce please install debug packages and attach a new backtrace.
Comment 2 Andrew Crouthamel 2018-09-28 03:26:22 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Andrew Crouthamel 2018-10-29 02:07:00 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information.

For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!