Bug 383173

Summary:	Kwin crashes sometimes when switching windows
Product:	[Plasma] kwin	Reporter:	personaldesignertechie
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	personaldesignertechie
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	5.10.4
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description personaldesignertechie 2017-08-05 16:27:29 UTC

Application: kwin_x11 (5.10.4)

Qt Version: 5.9.1
Frameworks Version: 5.36.0
Operating System: Linux 4.12.4-1-ARCH x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
I was alt tabbing and it crashes about half the time I do.

System Info:
Kwin Vesion: 5.10.4 (X11)
KDE Plasma Version: 5.10.4
Architecture: x86_64 (AMD64)
OS: Arch Linux

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 0x7fbcc965f840 (LWP 12973))]

Thread 11 (Thread 0x7fbc73b25700 (LWP 12990)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbcc5514b04 in  () at /usr/lib/libQt5Script.so.5
#2  0x00007fbcc5514b49 in  () at /usr/lib/libQt5Script.so.5
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fbc89a19700 (LWP 12989)):
#0  0x00007fbcc8fe4f76 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fbcc65f5ba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc65f733f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fbcc659dffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbcc63b740e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fbcc0c811d5 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fbcc63bc15b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fbc8a36f700 (LWP 12988)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc916b150c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbc916b1218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fbc8ab70700 (LWP 12987)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc916b150c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbc916b1218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fbc8b371700 (LWP 12986)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc916b150c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbc916b1218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fbc8bb72700 (LWP 12985)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc916b150c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbc916b1218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fbc8c578700 (LWP 12984)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc916b150c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbc916b1218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fbc8ceba700 (LWP 12983)):
#0  0x00007fbcc21861ad in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fbc916b150c in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007fbc916b1218 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fbca722e700 (LWP 12982)):
#0  0x00007fbcc8fe4f76 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fbcc65f5ba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc65f733f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fbcc659dffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbcc63b740e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fbcc0c811d5 in  () at /usr/lib/libQt5Qml.so.5
#6  0x00007fbcc63bc15b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fbcad5ac700 (LWP 12978)):
#0  0x00007fbcc8fe4f76 in ppoll () at /usr/lib/libc.so.6
#1  0x00007fbcc65f5ba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib/libQt5Core.so.5
#2  0x00007fbcc65f733f in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#3  0x00007fbcc659dffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fbcc63b740e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5  0x00007fbcbfe22396 in  () at /usr/lib/libQt5DBus.so.5
#6  0x00007fbcc63bc15b in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fbcc2180049 in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fbcc8feef0f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fbcc965f840 (LWP 12973)):
[KCrash Handler]
#5  0x00007fbc91a4c5ce in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#6  0x00007fbc917cb582 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#7  0x00007fbc915bb961 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#8  0x00007fbc915806b0 in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#9  0x00007fbc91580b4a in  () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#10 0x00007fbcc133439f in QSGBatchRenderer::Renderer::renderMergedBatch(QSGBatchRenderer::Batch const*) () at /usr/lib/libQt5Quick.so.5
#11 0x00007fbcc13355e5 in QSGBatchRenderer::Renderer::renderBatches() () at /usr/lib/libQt5Quick.so.5
#12 0x00007fbcc133ad44 in QSGBatchRenderer::Renderer::render() () at /usr/lib/libQt5Quick.so.5
#13 0x00007fbcc132b6ed in QSGRenderer::renderScene(QSGBindable const&) () at /usr/lib/libQt5Quick.so.5
#14 0x00007fbcc132bbab in QSGRenderer::renderScene(unsigned int) () at /usr/lib/libQt5Quick.so.5
#15 0x00007fbcc1365f50 in QSGDefaultRenderContext::renderNextFrame(QSGRenderer*, unsigned int) () at /usr/lib/libQt5Quick.so.5
#16 0x00007fbcc13c2948 in QQuickWindowPrivate::renderSceneGraph(QSize const&) () at /usr/lib/libQt5Quick.so.5
#17 0x00007fbcc13583a9 in  () at /usr/lib/libQt5Quick.so.5
#18 0x00007fbcc13ccbd6 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#19 0x00007fbca557bba4 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/libKF5PlasmaQuick.so.5
#20 0x00007fbcc72c6e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007fbcc72ce926 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#22 0x00007fbcc659fbd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#23 0x00007fbcc6b0e293 in QWindowPrivate::deliverUpdateRequest() () at /usr/lib/libQt5Gui.so.5
#24 0x00007fbcc6b0e7bb in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#25 0x00007fbcc13ccb75 in QQuickWindow::event(QEvent*) () at /usr/lib/libQt5Quick.so.5
#26 0x00007fbca557bba4 in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib/libKF5PlasmaQuick.so.5
#27 0x00007fbcc72c6e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#28 0x00007fbcc72ce926 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#29 0x00007fbcc659fbd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#30 0x00007fbcc65f94a8 in QTimerInfoList::activateTimers() () at /usr/lib/libQt5Core.so.5
#31 0x00007fbcc65f75a4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#32 0x00007fbcb08690de in  () at /usr/lib/libQt5XcbQpa.so.5
#33 0x00007fbcc659dffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#34 0x00007fbcc65a7048 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#35 0x00007fbcc92af6d3 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#36 0x00007fbcc8f214ca in __libc_start_main () at /usr/lib/libc.so.6
#37 0x000000856831f7ca in _start ()

Reported using DrKonqi

Comment 1 Martin Flöser 2017-08-06 14:51:41 UTC

Crash happens in AMD driver. Nothing we can do.