Bug 374112

Summary: Crash of KWin after switching to tty
Product: [Plasma] kwin Reporter: Alexander Nolting <a.nolting>
Component: generalAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED WORKSFORME    
Severity: crash Keywords: drkonqi, triaged
Priority: NOR    
Version First Reported In: 5.8.4   
Target Milestone: ---   
Platform: openSUSE   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Alexander Nolting 2016-12-24 12:58:17 UTC 
Application: kwin_x11 (5.8.4)

Qt Version: 5.7.0
Frameworks Version: 5.29.0
Operating System: Linux 4.8.14-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:
I used Firefox and recognized a looked left mouse button press. This can explained as you left click on the vertical scroll bar and the move it. But after releasing the button the desktop will release mouse point from the bar which results in a constant up and down move while you moving the mouse pointer over the desktop.

This behavior can probably provocated again if you use a mouse, moving an clicking with it and at the same time you "click" on the touchpad errounessly while typing simultanously.

Then you try to switch between the windows using ALT-TAB and next to this you switch to TTY.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ffa2c326900 (LWP 8161))]

Thread 5 (Thread 0x7ffa075ef700 (LWP 10952)):
[KCrash Handler]
#6  0x00007ff9fde599f5 in  () at /usr/lib64/libnvidia-glcore.so.375.20
#7  0x00007ff9fe253b16 in  () at /usr/lib64/libnvidia-glcore.so.375.20
#8  0x00007ff9fe389eb6 in  () at /usr/lib64/libnvidia-glcore.so.375.20
#9  0x00007ff9fdffda9b in  () at /usr/lib64/libnvidia-glcore.so.375.20
#10 0x00007ff9fdfbfe6c in  () at /usr/lib64/libnvidia-glcore.so.375.20
#11 0x00007ffa29b8cab5 in QOpenGLShaderProgram::link() () at /usr/lib64/libQt5Gui.so.5
#12 0x00007ffa29bacffc in QOpenGLTextureGlyphCache::resizeTextureData(int, int) () at /usr/lib64/libQt5Gui.so.5
#13 0x00007ffa29b4d256 in QTextureGlyphCache::fillInPendingGlyphs() () at /usr/lib64/libQt5Gui.so.5
#14 0x00007ffa2418bb58 in  () at /usr/lib64/libQt5Quick.so.5
#15 0x00007ffa24189a14 in  () at /usr/lib64/libQt5Quick.so.5
#16 0x00007ffa24210c57 in QQuickTextNode::addGlyphs(QPointF const&, QGlyphRun const&, QColor const&, QQuickText::TextStyle, QColor const&, QSGNode*) () at /usr/lib64/libQt5Quick.so.5
#17 0x00007ffa242158a4 in  () at /usr/lib64/libQt5Quick.so.5
#18 0x00007ffa24211b7c in QQuickTextNode::addTextLayout(QPointF const&, QTextLayout*, QColor const&, QQuickText::TextStyle, QColor const&, QColor const&, QColor const&, QColor const&, int, int, int, int) () at /usr/lib64/libQt5Quick.so.5
#19 0x00007ffa2421063a in QQuickText::updatePaintNode(QSGNode*, QQuickItem::UpdatePaintNodeData*) () at /usr/lib64/libQt5Quick.so.5
#20 0x00007ffa241cde80 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*) () at /usr/lib64/libQt5Quick.so.5
#21 0x00007ffa241ce69b in QQuickWindowPrivate::updateDirtyNodes() () at /usr/lib64/libQt5Quick.so.5
#22 0x00007ffa241cf70e in QQuickWindowPrivate::syncSceneGraph() () at /usr/lib64/libQt5Quick.so.5
#23 0x00007ffa2419eb75 in  () at /usr/lib64/libQt5Quick.so.5
#24 0x00007ffa241a07fc in  () at /usr/lib64/libQt5Quick.so.5
#25 0x00007ffa241a48fc in  () at /usr/lib64/libQt5Quick.so.5
#26 0x00007ffa29170558 in  () at /usr/lib64/libQt5Core.so.5
#27 0x00007ffa24fa4454 in start_thread () at /lib64/libpthread.so.0
#28 0x00007ffa2bcc537f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7ffa0598b700 (LWP 8283)):
#0  0x00007ffa24faa10f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ffa282f7834 in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007ffa282f7879 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007ffa24fa4454 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ffa2bcc537f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7ffa06bab700 (LWP 8229)):
#0  0x00007ffa2bcbc731 in ppoll () at /lib64/libc.so.6
#1  0x00007ffa2938eb41 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007ffa29390428 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007ffa2933d1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ffa2916b8b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007ffa23ad3a75 in  () at /usr/lib64/libQt5Qml.so.5
#6  0x00007ffa29170558 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ffa24fa4454 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ffa2bcc537f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7ffa15f58700 (LWP 8162)):
#0  0x00007ffa2bcbc66d in poll () at /lib64/libc.so.6
#1  0x00007ffa2075f876 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ffa2075f98c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ffa2939379b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ffa2933d1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ffa2916b8b3 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ffa22cab3e5 in  () at /usr/lib64/libQt5DBus.so.5
#7  0x00007ffa29170558 in  () at /usr/lib64/libQt5Core.so.5
#8  0x00007ffa24fa4454 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ffa2bcc537f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7ffa2c326900 (LWP 8161)):
#0  0x00007ffa24faa10f in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ffa2917140b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib64/libQt5Core.so.5
#2  0x00007ffa241a149f in  () at /usr/lib64/libQt5Quick.so.5
#3  0x00007ffa241a35b7 in  () at /usr/lib64/libQt5Quick.so.5
#4  0x00007ffa241a3bb3 in  () at /usr/lib64/libQt5Quick.so.5
#5  0x00007ffa298a03c5 in QWindow::event(QEvent*) () at /usr/lib64/libQt5Gui.so.5
#6  0x00007ffa241d96c3 in QQuickWindow::event(QEvent*) () at /usr/lib64/libQt5Quick.so.5
#7  0x00007ffa040cc91b in PlasmaQuick::Dialog::event(QEvent*) () at /usr/lib64/libKF5PlasmaQuick.so.5
#8  0x00007ffa2a03492c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#9  0x00007ffa2a03c0e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#10 0x00007ffa2933f200 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#11 0x00007ffa2989589d in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib64/libQt5Gui.so.5
#12 0x00007ffa298964ad in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib64/libQt5Gui.so.5
#13 0x00007ffa2987425b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Gui.so.5
#14 0x00007ffa152ba556 in  () at /usr/lib64/libQt5XcbQpa.so.5
#15 0x00007ffa2933d1ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#16 0x00007ffa2934595c in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#17 0x00007ffa2bf84a56 in kdemain () at /usr/lib64/libkdeinit5_kwin_x11.so
#18 0x00007ffa2bbfc291 in __libc_start_main () at /lib64/libc.so.6
#19 0x00000000004006ea in _start ()

Reported using DrKonqi
Comment 1 Martin Flöser 2016-12-24 13:20:32 UTC 
Unfortunately the backtrace is lacking debug symbols. We see that it crashes but not where. If you are able to reproduce please install debug packages and attach a new backtrace.

From what we see it looks like a crash in the nvidia driver. If that's the case there is probably not much we can do. NVIDIA driver - unlike other drivers - discards mapped memory when switching vt resulting in random crashers in the worst case.
Comment 2 Andrew Crouthamel 2018-09-26 22:10:12 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 2018-10-27 02:30:05 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!