https://bugs.kde.org/show_bug.cgi?id=381018
Bug ID: 381018
Summary: KWin crashes when alt-tabbing
Product: kwin
Version: 5.10.1
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: t...@nullable.se
Target Milestone: ---
Application: kwin_x11 (5.10.1)
Qt Version: 5.9.0
Frameworks Version: 5.34.0
Operating System: Linux 4.11.3-1-ARCH x86_64
Distribution: "Arch Linux"
-- Information about the crash:
- What I was doing when the application crashed:
I was browsing with Google Chrome, and wanted to alt-tab away. However, the
animation froze for about two seconds right before the window list appeared,
then the screen flashed black and the KDE "program crashed" notification
appeared.
- Unusual behavior I noticed:
Sometimes there are visual artifacts in the alt-tab window (either a background
is missing, some area is blacked out, or all characters are replaced by
rectangles). However, this is an older issue, so I doubt it's related.
- Settings
I'm using the Breeze application switcher, and OpenGL 3.1 compositing. vsync is
off. However, this also happens with OpenGL 2.0 compositing. I haven't tried
with XRender.
I'm using kwin 5.10.1-2, mesa 17.1.1-1, and linux 4.11.3-1 from Arch. I'm using
an Intel i5-6600K CPU, and an AMD RX480 graphics card, with the open AMDGPU
stack.
The crashing didn't happen under 5.10.1-1, but the visual artifacts did (and
usually lasted until I restarted KWin).
However, I doubt the visual artifacts are a hardware issue, since they also
happened on my old computer (i5-2500K, R9 270X) with both the fglrx and radeon
driver stacks.
The crash can be reproduced sometimes.
-- Backtrace:
Application: Kwin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f33af4a4840 (LWP 998))]
Thread 11 (Thread 0x7f3371408700 (LWP 1086)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f33ab44cac4 in () at /usr/lib/libQt5Script.so.5
#2 0x00007f33ab44cb09 in () at /usr/lib/libQt5Script.so.5
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 10 (Thread 0x7f337250a700 (LWP 1076)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f337d68a71b in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f337d68a447 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 9 (Thread 0x7f3372d0b700 (LWP 1075)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f337d68a71b in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f337d68a447 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 8 (Thread 0x7f337350c700 (LWP 1074)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f337d68a71b in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f337d68a447 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 7 (Thread 0x7f3373d0d700 (LWP 1073)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f337d68a71b in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f337d68a447 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 6 (Thread 0x7f337450e700 (LWP 1072)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f337d68a71b in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f337d68a447 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 5 (Thread 0x7f3374d0f700 (LWP 1071)):
#0 0x00007f33a80d039d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f337d68a71b in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f337d68a447 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 4 (Thread 0x7f338d272700 (LWP 1063)):
#0 0x00007f33aef09396 in ppoll () at /usr/lib/libc.so.6
#1 0x00007f33ac521471 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/libQt5Core.so.5
#2 0x00007f33ac522b5e in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#3 0x00007f33ac4cc21a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#4 0x00007f33ac2ee40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5 0x00007f33a6dea645 in () at /usr/lib/libQt5Qml.so.5
#6 0x00007f33ac2f2cbd in () at /usr/lib/libQt5Core.so.5
#7 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#8 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 3 (Thread 0x7f338f65d700 (LWP 1012)):
#0 0x00007f33aef09396 in ppoll () at /usr/lib/libc.so.6
#1 0x00007f33ac521471 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/libQt5Core.so.5
#2 0x00007f33ac522b5e in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#3 0x00007f33ac4cc21a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#4 0x00007f33ac2ee40a in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5 0x00007f33a5f9ad45 in () at /usr/lib/libQt5DBus.so.5
#6 0x00007f33ac2f2cbd in () at /usr/lib/libQt5Core.so.5
#7 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#8 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 2 (Thread 0x7f3395813700 (LWP 1009)):
#0 0x00007f33aef092bd in poll () at /usr/lib/libc.so.6
#1 0x00007f33adfef8e0 in () at /usr/lib/libxcb.so.1
#2 0x00007f33adff1679 in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3 0x00007f33968eed49 in () at /usr/lib/libQt5XcbQpa.so.5
#4 0x00007f33ac2f2cbd in () at /usr/lib/libQt5Core.so.5
#5 0x00007f33a80ca297 in start_thread () at /usr/lib/libpthread.so.0
#6 0x00007f33aef1325f in clone () at /usr/lib/libc.so.6
Thread 1 (Thread 0x7f33af4a4840 (LWP 998)):
[KCrash Handler]
#6 0x00007f337da4b71e in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#7 0x00007f337d7b9f25 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#8 0x00007f337d595940 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#9 0x00007f337d555b30 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#10 0x00007f337d555fb9 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#11 0x00007f33a749d27f in
QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*)
() at /usr/lib/libQt5Quick.so.5
#12 0x00007f33a749e4c5 in QSGBatchRenderer::Renderer::renderBatches() () at
/usr/lib/libQt5Quick.so.5
#13 0x00007f33a74a3c24 in QSGBatchRenderer::Renderer::render() () at
/usr/lib/libQt5Quick.so.5
#14 0x00007f33a74945cd in QSGRenderer::renderScene(QSGBindable const&) () at
/usr/lib/libQt5Quick.so.5
#15 0x00007f33a7494a8b in QSGRenderer::renderScene(unsigned int) () at
/usr/lib/libQt5Quick.so.5
#16 0x00007f33a74ced40 in
QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at
/usr/lib/libQt5Quick.so.5
#17 0x00007f33a752b868 in QQuickWindowPrivate::renderSceneGraph(QSize const&)
() at /usr/lib/libQt5Quick.so.5
#18 0x00007f33a74c1139 in () at /usr/lib/libQt5Quick.so.5
#19 0x00007f33a7535ad6 in QQuickWindow::event(QEvent*) () at
/usr/lib/libQt5Quick.so.5
#20 0x00007f32cf6947ab in PlasmaQuick::Dialog::event(QEvent*) () at
/usr/lib/libKF5PlasmaQuick.so.5
#21 0x00007f33ad1f846c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#22 0x00007f33ad1ffcf4 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#23 0x00007f33ac4cdb98 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#24 0x00007f33aca42751 in QWindowPrivate::deliverUpdateRequest() () at
/usr/lib/libQt5Gui.so.5
#25 0x00007f33aca42c69 in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#26 0x00007f33a7535a75 in QQuickWindow::event(QEvent*) () at
/usr/lib/libQt5Quick.so.5
#27 0x00007f32cf6947ab in PlasmaQuick::Dialog::event(QEvent*) () at
/usr/lib/libKF5PlasmaQuick.so.5
#28 0x00007f33ad1f846c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#29 0x00007f33ad1ffcf4 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#30 0x00007f33ac4cdb98 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#31 0x00007f33ac524bae in QTimerInfoList::activateTimers() () at
/usr/lib/libQt5Core.so.5
#32 0x00007f33ac522dc2 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#33 0x00007f33969515bd in () at /usr/lib/libQt5XcbQpa.so.5
#34 0x00007f33ac4cc21a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#35 0x00007f33ac4d4a74 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#36 0x00007f33af1d3fd5 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#37 0x00007f33aee4643a in __libc_start_main () at /usr/lib/libc.so.6
#38 0x000000000040069a in _start ()
Reported using DrKonqi
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