https://bugs.kde.org/show_bug.cgi?id=384868
Bug ID: 384868
Summary: KWin crashes on alt-tab
Product: kwin
Version: 5.10.5
Platform: Archlinux Packages
OS: Linux
Status: UNCONFIRMED
Keywords: drkonqi
Severity: crash
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: cr...@vassar.edu
Target Milestone: ---
Application: kwin_x11 (5.10.5)
Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.12.13-1-ARCH x86_64
Distribution (Platform): Archlinux Packages
-- Information about the crash:
- What I was doing when the application crashed:
KWin crashes when I try to use alt-tab to switch between windows. Not every
time, perhaps a third of the time.
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 0x7f7344a62840 (LWP 8454))]
Thread 13 (Thread 0x7f72e3fff700 (LWP 8519)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 12 (Thread 0x7f72e37fe700 (LWP 8477)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f73408dbb04 in () at /usr/lib/libQt5Script.so.5
#2 0x00007f73408dbb49 in () at /usr/lib/libQt5Script.so.5
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 11 (Thread 0x7f7300ff9700 (LWP 8475)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 10 (Thread 0x7f73017fa700 (LWP 8474)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 9 (Thread 0x7f7301ffb700 (LWP 8473)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 8 (Thread 0x7f73027fc700 (LWP 8472)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 7 (Thread 0x7f7302ffd700 (LWP 8471)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 6 (Thread 0x7f73037fe700 (LWP 8470)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 5 (Thread 0x7f7303fff700 (LWP 8469)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 4 (Thread 0x7f7308c2a700 (LWP 8468)):
#0 0x00007f733d51838d in pthread_cond_wait@@GLIBC_2.3.2 () at
/usr/lib/libpthread.so.0
#1 0x00007f7311480d9c in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2 0x00007f7311480ca8 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#4 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 3 (Thread 0x7f7320f7c700 (LWP 8465)):
#0 0x00007f73443dedb6 in ppoll () at /usr/lib/libc.so.6
#1 0x00007f73419c8ba3 in qt_safe_poll(pollfd*, unsigned long, timespec const*)
() at /usr/lib/libQt5Core.so.5
#2 0x00007f73419ca33f in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#3 0x00007f7341970ffb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#4 0x00007f734178a40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#5 0x00007f733c0003d9 in () at /usr/lib/libQt5Qml.so.5
#6 0x00007f734178f15b in () at /usr/lib/libQt5Core.so.5
#7 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#8 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 2 (Thread 0x7f7323fff700 (LWP 8461)):
#0 0x00007ffeff786967 in ()
#1 0x00007ffeff786c20 in clock_gettime ()
#2 0x00007f73443f6a66 in clock_gettime () at /usr/lib/libc.so.6
#3 0x00007f73419cc972 in () at /usr/lib/libQt5Core.so.5
#4 0x00007f73419cb10a in QTimerInfoList::updateCurrentTime() () at
/usr/lib/libQt5Core.so.5
#5 0x00007f73419cb6e6 in QTimerInfoList::timerWait(timespec&) () at
/usr/lib/libQt5Core.so.5
#6 0x00007f73419ca655 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#7 0x00007f7341970ffb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#8 0x00007f734178a40e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#9 0x00007f733b18f396 in () at /usr/lib/libQt5DBus.so.5
#10 0x00007f734178f15b in () at /usr/lib/libQt5Core.so.5
#11 0x00007f733d51208a in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f73443e91bf in clone () at /usr/lib/libc.so.6
Thread 1 (Thread 0x7f7344a62840 (LWP 8454)):
[KCrash Handler]
#5 0x00007f731182dc89 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#6 0x00007f73115a0f83 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#7 0x00007f731159f02f in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#8 0x00007f731159f4d5 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#9 0x00007f73113bfc17 in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#10 0x00007f7311503c4a in () at /usr/lib/xorg/modules/dri/radeonsi_dri.so
#11 0x00007f732015247f in () at /usr/lib/libGLX_mesa.so.0
#12 0x00007f73298dad35 in () at
/usr/lib/qt/plugins/xcbglintegrations/libqxcb-glx-integration.so
#13 0x00007f7341f1306f in QOpenGLContext::swapBuffers(QSurface*) () at
/usr/lib/libQt5Gui.so.5
#14 0x00007f733c6d8160 in () at /usr/lib/libQt5Quick.so.5
#15 0x00007f733c74e996 in QQuickWindow::event(QEvent*) () at
/usr/lib/libQt5Quick.so.5
#16 0x00007f725af320d4 in PlasmaQuick::Dialog::event(QEvent*) () at
/usr/lib/libKF5PlasmaQuick.so.5
#17 0x00007f734269ee4c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#18 0x00007f73426a6926 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#19 0x00007f7341972bd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#20 0x00007f7341ee4293 in QWindowPrivate::deliverUpdateRequest() () at
/usr/lib/libQt5Gui.so.5
#21 0x00007f7341ee47bb in QWindow::event(QEvent*) () at /usr/lib/libQt5Gui.so.5
#22 0x00007f733c74e936 in QQuickWindow::event(QEvent*) () at
/usr/lib/libQt5Quick.so.5
#23 0x00007f725af320d4 in PlasmaQuick::Dialog::event(QEvent*) () at
/usr/lib/libKF5PlasmaQuick.so.5
#24 0x00007f734269ee4c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#25 0x00007f73426a6926 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/libQt5Widgets.so.5
#26 0x00007f7341972bd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/libQt5Core.so.5
#27 0x00007f73419cc4a8 in QTimerInfoList::activateTimers() () at
/usr/lib/libQt5Core.so.5
#28 0x00007f73419ca5a4 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/libQt5Core.so.5
#29 0x00007f732ba6d0de in () at /usr/lib/libQt5XcbQpa.so.5
#30 0x00007f7341970ffb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/libQt5Core.so.5
#31 0x00007f734197a048 in QCoreApplication::exec() () at
/usr/lib/libQt5Core.so.5
#32 0x00007f73446b36d3 in kdemain () at /usr/lib/libkdeinit5_kwin_x11.so
#33 0x00007f7344313f6a in __libc_start_main () at /usr/lib/libc.so.6
#34 0x00005648b41fe7ca in _start ()
Reported using DrKonqi
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