https://bugs.kde.org/show_bug.cgi?id=372526

            Bug ID: 372526
           Summary: Instable plasma
           Product: plasmashell
           Version: 5.5.5
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: k...@davidedmundson.co.uk
          Reporter: chady...@gmail.com
                CC: bhus...@gmail.com, plasma-b...@kde.org
  Target Milestone: 1.0

Application: plasmashell (5.5.5)

Qt Version: 5.5.1
Operating System: Linux 4.4.0-45-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

-- Information about the crash:
- Unusual behavior I noticed:

Plasma bug and always restart, it's quick but it's really often.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7eff3f2a38c0 (LWP 8121))]

Thread 16 (Thread 0x7efe6dce8700 (LWP 8147)):
#0  0x00007eff36788ae4 in g_mutex_unlock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007eff36744391 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff367444ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff3a2db7eb in QEventDispatcherGlib::processEvents
(this=0x7efe680008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007eff3a282b4a in QEventLoop::exec (this=this@entry=0x7efe6dce7cc0,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007eff3a09f834 in QThread::exec (this=<optimized out>) at
thread/qthread.cpp:503
#6  0x00007efe701c67d7 in KCupsConnection::run() () from
/usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007eff3a0a47be in QThreadPrivate::start (arg=0x1660e00) at
thread/qthread_unix.cpp:331
#8  0x00007eff3919170a in start_thread (arg=0x7efe6dce8700) at
pthread_create.c:333
#9  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7efe82fef700 (LWP 8146)):
#0  0x00007ffdd75f69a9 in ?? ()
#1  0x00007ffdd75f6cd5 in clock_gettime ()
#2  0x00007eff399c8c86 in __GI___clock_gettime (clock_id=1,
tp=tp@entry=0x7efe82feea00) at ../sysdeps/unix/clock_gettime.c:115
#3  0x00007eff3a154b86 in qt_clock_gettime (ts=0x7efe82feea00, clock=<optimized
out>) at tools/qelapsedtimer_unix.cpp:105
#4  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at
tools/qelapsedtimer_unix.cpp:156
#5  qt_gettime () at tools/qelapsedtimer_unix.cpp:165
#6  0x00007eff3a2d9279 in QTimerInfoList::updateCurrentTime
(this=this@entry=0x7efe7c002ed0) at kernel/qtimerinfo_unix.cpp:84
#7  0x00007eff3a2d97e5 in QTimerInfoList::timerWait (this=0x7efe7c002ed0,
tm=...) at kernel/qtimerinfo_unix.cpp:381
#8  0x00007eff3a2dabce in timerSourcePrepareHelper (timeout=0x7efe82feead4,
src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#9  timerSourcePrepare (source=<optimized out>, timeout=0x7efe82feead4) at
kernel/qeventdispatcher_glib.cpp:160
#10 0x00007eff3674392d in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007eff367442cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007eff367444ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007eff3a2db7eb in QEventDispatcherGlib::processEvents
(this=0x7efe7c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#14 0x00007eff3a282b4a in QEventLoop::exec (this=this@entry=0x7efe82feec90,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#15 0x00007eff3a09f834 in QThread::exec (this=this@entry=0x1681e10) at
thread/qthread.cpp:503
#16 0x00007eff3d2cded6 in QQuickPixmapReader::run (this=0x1681e10) at
util/qquickpixmapcache.cpp:817
#17 0x00007eff3a0a47be in QThreadPrivate::start (arg=0x1681e10) at
thread/qthread_unix.cpp:331
#18 0x00007eff3919170a in start_thread (arg=0x7efe82fef700) at
pthread_create.c:333
#19 0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7eff09a78700 (LWP 8145)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff3ececbd4 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007eff3ececc19 in ?? () from
/usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007eff3919170a in start_thread (arg=0x7eff09a78700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7eff0b391700 (LWP 8144)):
#0  0x00007eff3a2dab83 in timerSourcePrepare (source=<optimized out>,
timeout=0x7eff0b390b24) at kernel/qeventdispatcher_glib.cpp:161
#1  0x00007eff3674392d in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff367442cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff367444ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff3a2db7eb in QEventDispatcherGlib::processEvents
(this=0x7eff040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007eff3a282b4a in QEventLoop::exec (this=this@entry=0x7eff0b390ce0,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007eff3a09f834 in QThread::exec (this=this@entry=0x1457de0) at
thread/qthread.cpp:503
#7  0x00007eff3c9473c5 in QQmlThreadPrivate::run (this=0x1457de0) at
qml/ftw/qqmlthread.cpp:141
#8  0x00007eff3a0a47be in QThreadPrivate::start (arg=0x1457de0) at
thread/qthread_unix.cpp:331
#9  0x00007eff3919170a in start_thread (arg=0x7eff0b391700) at
pthread_create.c:333
#10 0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7eff111b4700 (LWP 8143)):
#0  0x00007eff36788ac9 in g_mutex_lock () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007eff36743939 in g_main_context_prepare () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff367442cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff367444ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007eff3a2db7eb in QEventDispatcherGlib::processEvents
(this=0x7eff0c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#5  0x00007eff3a282b4a in QEventLoop::exec (this=this@entry=0x7eff111b3ce0,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007eff3a09f834 in QThread::exec (this=this@entry=0x134df60) at
thread/qthread.cpp:503
#7  0x00007eff3c9473c5 in QQmlThreadPrivate::run (this=0x134df60) at
qml/ftw/qqmlthread.cpp:141
#8  0x00007eff3a0a47be in QThreadPrivate::start (arg=0x134df60) at
thread/qthread_unix.cpp:331
#9  0x00007eff3919170a in start_thread (arg=0x7eff111b4700) at
pthread_create.c:333
#10 0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7eff159e7700 (LWP 8142)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff159e7700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7eff161e8700 (LWP 8141)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff161e8700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7eff169e9700 (LWP 8140)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff169e9700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7eff171ea700 (LWP 8139)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff171ea700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7eff179eb700 (LWP 8138)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff179eb700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7eff181ec700 (LWP 8137)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff181ec700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7eff189ed700 (LWP 8136)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff189ed700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7eff191ee700 (LWP 8135)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007eff212c9aa3 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#2  0x00007eff212c9907 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#3  0x00007eff3919170a in start_thread (arg=0x7eff191ee700) at
pthread_create.c:333
#4  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7eff23be2700 (LWP 8126)):
#0  0x00007eff399aeb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff3674439c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007eff367444ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007eff3a2db7eb in QEventDispatcherGlib::processEvents
(this=0x7eff1c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:420
#4  0x00007eff3a282b4a in QEventLoop::exec (this=this@entry=0x7eff23be1ce0,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007eff3a09f834 in QThread::exec (this=this@entry=0x10bd980) at
thread/qthread.cpp:503
#6  0x00007eff3c9473c5 in QQmlThreadPrivate::run (this=0x10bd980) at
qml/ftw/qqmlthread.cpp:141
#7  0x00007eff3a0a47be in QThreadPrivate::start (arg=0x10bd980) at
thread/qthread_unix.cpp:331
#8  0x00007eff3919170a in start_thread (arg=0x7eff23be2700) at
pthread_create.c:333
#9  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7eff2a5e5700 (LWP 8124)):
#0  0x00007eff399aeb5d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007eff3da73c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007eff3da758d7 in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007eff2c733629 in QXcbEventReader::run (this=0xfe9680) at
qxcbconnection.cpp:1253
#4  0x00007eff3a0a47be in QThreadPrivate::start (arg=0xfe9680) at
thread/qthread_unix.cpp:331
#5  0x00007eff3919170a in start_thread (arg=0x7eff2a5e5700) at
pthread_create.c:333
#6  0x00007eff399ba82d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7eff3f2a38c0 (LWP 8121)):
[KCrash Handler]
#6  __memmove_avx_unaligned () at
../sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S:245
#7  0x00007eff20f594ad in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#8  0x00007eff20f57d95 in ?? () from
/usr/lib/x86_64-linux-gnu/dri/swrast_dri.so
#9  0x00007eff229c6c1f in Plasma::WindowThumbnail::bindGLXTexture
(this=this@entry=0x2e349d0) at
/build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:447
#10 0x00007eff229c7e44 in Plasma::WindowThumbnail::windowToTextureGLX
(this=this@entry=0x2e349d0, textureNode=textureNode@entry=0x2eaafb0) at
/build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:282
#11 0x00007eff229c8803 in Plasma::WindowThumbnail::windowToTexture
(this=0x2e349d0, textureNode=0x2eaafb0) at
/build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:394
#12 0x00007eff229c8d24 in Plasma::WindowThumbnail::updatePaintNode
(this=0x2e349d0, oldNode=<optimized out>, updatePaintNodeData=<optimized out>)
at
/build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/windowthumbnail.cpp:199
#13 0x00007eff3d36c2d8 in QQuickWindowPrivate::updateDirtyNode
(this=this@entry=0x2482a20, item=item@entry=0x2e349d0) at
items/qquickwindow.cpp:2984
#14 0x00007eff3d36cb4b in QQuickWindowPrivate::updateDirtyNodes
(this=this@entry=0x2482a20) at items/qquickwindow.cpp:2722
#15 0x00007eff3d36ccc0 in QQuickWindowPrivate::syncSceneGraph
(this=this@entry=0x2482a20) at items/qquickwindow.cpp:341
#16 0x00007eff3d33b12c in QSGGuiThreadRenderLoop::renderWindow
(this=this@entry=0x1209550, window=0x2481e30) at
scenegraph/qsgrenderloop.cpp:372
#17 0x00007eff3d33caa6 in QSGGuiThreadRenderLoop::exposureChanged
(this=0x1209550, window=0x2481e30) at scenegraph/qsgrenderloop.cpp:422
#18 0x00007eff3a5d02b5 in QWindow::event (this=this@entry=0x2481e30,
ev=ev@entry=0x7ffdd73fffb0) at kernel/qwindow.cpp:2060
#19 0x00007eff3d376871 in QQuickWindow::event (this=this@entry=0x2481e30,
e=e@entry=0x7ffdd73fffb0) at items/qquickwindow.cpp:1413
#20 0x00007eff3ee1d2db in PlasmaQuick::Dialog::event
(this=this@entry=0x2481e30, event=event@entry=0x7ffdd73fffb0) at
/build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/plasmaquick/dialog.cpp:1168
#21 0x00007eff229c0c45 in ToolTipDialog::event (this=0x2481e30,
e=0x7ffdd73fffb0) at
/build/plasma-framework-ZIMEEb/plasma-framework-5.18.0/src/declarativeimports/core/tooltipdialog.cpp:120
#22 0x00007eff3ad8805c in QApplicationPrivate::notify_helper
(this=this@entry=0xfce680, receiver=receiver@entry=0x2481e30,
e=e@entry=0x7ffdd73fffb0) at kernel/qapplication.cpp:3716
#23 0x00007eff3ad8d516 in QApplication::notify (this=0x7ffdd74003d0,
receiver=0x2481e30, e=0x7ffdd73fffb0) at kernel/qapplication.cpp:3499
#24 0x00007eff3a28538b in QCoreApplication::notifyInternal
(this=0x7ffdd74003d0, receiver=receiver@entry=0x2481e30,
event=event@entry=0x7ffdd73fffb0) at kernel/qcoreapplication.cpp:965
#25 0x00007eff3a5c84ac in QCoreApplication::sendSpontaneousEvent
(event=0x7ffdd73fffb0, receiver=0x2481e30) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:227
#26 QGuiApplicationPrivate::processExposeEvent (e=0x26a2d90) at
kernel/qguiapplication.cpp:2663
#27 0x00007eff3a5c921d in QGuiApplicationPrivate::processWindowSystemEvent
(e=e@entry=0x26a2d90) at kernel/qguiapplication.cpp:1658
#28 0x00007eff3a5acf08 in QWindowSystemInterface::sendWindowSystemEvents
(flags=...) at kernel/qwindowsysteminterface.cpp:625
#29 0x00007eff2c765060 in userEventSourceDispatch (source=<optimized out>) at
eventdispatchers/qeventdispatcher_glib.cpp:70
#30 0x00007eff367441a7 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007eff36744400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007eff367444ac in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007eff3a2db7cf in QEventDispatcherGlib::processEvents (this=0x100ea70,
flags=...) at kernel/qeventdispatcher_glib.cpp:418
#34 0x00007eff3a282b4a in QEventLoop::exec (this=this@entry=0x7ffdd7400270,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#35 0x00007eff3a28abec in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1229
#36 0x00007eff3a5bebfc in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1542
#37 0x00007eff3ad84495 in QApplication::exec () at kernel/qapplication.cpp:2976
#38 0x0000000000432d4a in main (argc=4, argv=<optimized out>) at
/build/plasma-workspace-kxRFE_/plasma-workspace-5.5.5.2/shell/main.cpp:181

Possible duplicates by query: bug 372512, bug 363133, bug 358342.

Reported using DrKonqi

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