Bug 398860

Application: kwin_x11 (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.49.0
Operating System: Linux 4.18.0-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (buster)

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

Plasma does not respond when I debug a program (with breakpoints(F9)) in qt(Qt Creator 4.7.0 based on Qt 5.11.1 revision dedbb40f57).

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff38f3ca940 (LWP 993))]

Thread 7 (Thread 0x7ff38656c700 (LWP 2748)):
#0  0x00007ff398f8ce6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561252a3c814) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff398f8ce6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x561252a3c7c0, cond=0x561252a3c7e8) at pthread_cond_wait.c:502
#2  0x00007ff398f8ce6c in __pthread_cond_wait (cond=0x561252a3c7e8, mutex=0x561252a3c7c0) at pthread_cond_wait.c:655
#3  0x00007ff39a1624fb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff39891e279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007ff39891e4da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007ff39a161d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff398f86f2a in start_thread (arg=0x7ff38656c700) at pthread_create.c:463
#8  0x00007ff39b752edf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7ff375523700 (LWP 1210)):
#0  0x00007ff39b748836 in __GI_ppoll (fds=0x7ff36c001a38, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007ff39a358221 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff39a359699 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff39a30924b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff39a158176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff3985e8c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007ff39a161d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff398f86f2a in start_thread (arg=0x7ff375523700) at pthread_create.c:463
#8  0x00007ff39b752edf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ff36b815700 (LWP 1123)):
#0  0x00007ff398f8ce6c in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff399d7afb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff398f8ce6c in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff399d7af68, cond=0x7ff399d7af90) at pthread_cond_wait.c:502
#2  0x00007ff398f8ce6c in __pthread_cond_wait (cond=0x7ff399d7af90, mutex=0x7ff399d7af68) at pthread_cond_wait.c:655
#3  0x00007ff399c83e2a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007ff399c83e49 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007ff398f86f2a in start_thread (arg=0x7ff36b815700) at pthread_create.c:463
#6  0x00007ff39b752edf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ff385c5d700 (LWP 1098)):
#0  0x00007ff39b748836 in __GI_ppoll (fds=0x7ff37c000d28, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007ff39a358221 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff39a359699 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff39a30924b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff39a158176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff3985e8c75 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007ff39a161d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff398f86f2a in start_thread (arg=0x7ff385c5d700) at pthread_create.c:463
#8  0x00007ff39b752edf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff387983700 (LWP 1048)):
#0  0x00007ff39b748836 in __GI_ppoll (fds=0x7ff38000b9f8, nfds=1, timeout=<optimized out>, sigmask=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007ff39a358221 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007ff39a359699 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007ff39a30924b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff39a158176 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff3980c6545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#6  0x00007ff39a161d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff398f86f2a in start_thread (arg=0x7ff387983700) at pthread_create.c:463
#8  0x00007ff39b752edf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff38e9e8700 (LWP 1046)):
#0  0x00007ff39b748739 in __GI___poll (fds=0x7ff38e9e7b78, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff39b25bcf7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ff39b25d90a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ff38f0bd159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ff39a161d47 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff398f86f2a in start_thread (arg=0x7ff38e9e8700) at pthread_create.c:463
#6  0x00007ff39b752edf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff38f3ca940 (LWP 993)):
[KCrash Handler]
#6  0x00007ff399efb67b in KWin::WindowQuadList::makeInterleavedArrays(unsigned int, KWin::GLVertex2D*, QMatrix4x4 const&) const () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#7  0x00007ff384a08142 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#8  0x00007ff384a10ab9 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#9  0x00007ff384a10be7 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#10 0x00007ff39b4ded83 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#11 0x00007ff399e92bc5 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#12 0x00007ff39b4ded23 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#13 0x00007ff399e01d69 in  () at /usr/lib/x86_64-linux-gnu/libkwin4_effect_builtins.so.1
#14 0x00007ff39b4ded23 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#15 0x00007ff399ef78dc in KWin::Effect::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#16 0x00007ff39b4ded23 in KWin::EffectsHandlerImpl::drawWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#17 0x00007ff39b4cb48c in KWin::Scene::finalPaintWindow(KWin::EffectWindowImpl*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#18 0x00007ff39b4debbb in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#19 0x00007ff399ef776c in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#20 0x00007ff39b4deb63 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#21 0x00007ff399ef776c in KWin::Effect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#22 0x00007ff39b4deb63 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#23 0x00007ff399f041db in KWin::AnimationEffect::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#24 0x00007ff39b4deb63 in KWin::EffectsHandlerImpl::paintWindow(KWin::EffectWindow*, int, QRegion, KWin::WindowPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#25 0x00007ff39b4d186e in KWin::Scene::paintWindow(KWin::Scene::Window*, int, QRegion, KWin::WindowQuadList) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#26 0x00007ff39b4ce01c in KWin::Scene::paintSimpleScreen(int, QRegion) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#27 0x00007ff384a039d2 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#28 0x00007ff39b4d0e40 in KWin::Scene::finalPaintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#29 0x00007ff39b4de915 in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#30 0x00007ff399ef76c1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#31 0x00007ff39b4de8bd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#32 0x00007ff399ef76c1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#33 0x00007ff39b4de8bd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#34 0x00007ff399ef76c1 in KWin::Effect::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwineffects.so.11
#35 0x00007ff39b4de8bd in KWin::EffectsHandlerImpl::paintScreen(int, QRegion, KWin::ScreenPaintData&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#36 0x00007ff39b4d0aee in KWin::Scene::paintScreen(int*, QRegion const&, QRegion const&, QRegion*, QRegion*, QMatrix4x4 const&, QRect const&) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#37 0x00007ff384a0aee6 in KWin::SceneOpenGL::paint(QRegion, QList<KWin::Toplevel*>) () at /usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.scenes/KWinSceneOpenGL.so
#38 0x00007ff39b4c286a in KWin::Compositor::performCompositing() () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#39 0x00007ff39a33402b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007ff39ac654a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007ff39ac6cae0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007ff39a30a579 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007ff39a35b638 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007ff39a3597ec in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007ff38f14f0ed in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#46 0x00007ff39a30924b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007ff39a3113c2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007ff39b82247b in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#49 0x00007ff39b67db17 in __libc_start_main (main=0x561250302050, argc=3, argv=0x7fff5685abc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5685abb8) at ../csu/libc-start.c:310
#50 0x000056125030208a in _start ()

Reported using DrKonqi