https://bugs.kde.org/show_bug.cgi?id=415114

            Bug ID: 415114
           Summary: Crash when selecting on desktop and wallpaper changes
                    at the same time
           Product: plasmashell
           Version: 5.17.4
          Platform: unspecified
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: k...@davidedmundson.co.uk
          Reporter: qr...@protonmail.com
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Application: plasmashell (5.17.4)

Qt Version: 5.13.2
Frameworks Version: 5.64.0
Operating System: Linux 5.0.0-37-generic x86_64
Distribution: KDE neon User Edition 5.17

-- Information about the crash:
- What I was doing when the application crashed:

I dragged a selection rectangle on the desktop. While dragging the desktop
wallpaper changed and the crash occured. 

Desktop Wallpaper settings are as follows: 
Layout: Folder View
Wallpaper Type: Slideshow
Order: Random

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6571acb800 (LWP 2222))]

Thread 27 (Thread 0x7f64ce9bf700 (LWP 325)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2469486c4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b246948670, cond=0x55b246948698) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b246948698,
mutex=0x55b246948670) at pthread_cond_wait.c:655
#3  0x00007f656b904aeb in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55b246948670) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f656b904aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x55b246671230, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007f656b904df9 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x55b246671238, mutex=mutex@entry=0x55b246671230,
time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f656f928ec8 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x55b246671228) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007f656f928ec8 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x55b2466711b0) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007f656f9292fa in QSGRenderThread::run() (this=0x55b2466711b0) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b2466711b0) at
thread/qthread_unix.cpp:360
#10 0x00007f656882f6db in start_thread (arg=0x7f64ce9bf700) at
pthread_create.c:463
#11 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f64dd717700 (LWP 324)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2469f5458) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b2469f5408, cond=0x55b2469f5430) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b2469f5430,
mutex=0x55b2469f5408) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f64dd717700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f64de54d700 (LWP 309)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b24677c290) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b24677c240, cond=0x55b24677c268) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b24677c268,
mutex=0x55b24677c240) at pthread_cond_wait.c:655
#3  0x00007f656b904aeb in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55b24677c240) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f656b904aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x55b2466a2700, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007f656b904df9 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x55b2466a2708, mutex=mutex@entry=0x55b2466a2700,
time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f656f928ec8 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x55b2466a26f8) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007f656f928ec8 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x55b2466a2680) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007f656f9292fa in QSGRenderThread::run() (this=0x55b2466a2680) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b2466a2680) at
thread/qthread_unix.cpp:360
#10 0x00007f656882f6db in start_thread (arg=0x7f64de54d700) at
pthread_create.c:463
#11 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f64ded4e700 (LWP 306)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b24636c3e8) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b24636c398, cond=0x55b24636c3c0) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b24636c3c0,
mutex=0x55b24636c398) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f64ded4e700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f64f519b700 (LWP 5111)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f654c00d8e0) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f654c00d890, cond=0x7f654c00d8b8) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x7f654c00d8b8,
mutex=0x7f654c00d890) at pthread_cond_wait.c:655
#3  0x00007f656b904aeb in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x7f654c00d890) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f656b904aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x55b245a65200, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007f656b904df9 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x55b245a65208, mutex=mutex@entry=0x55b245a65200,
time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f656f928ec8 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x55b245a651f8) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007f656f928ec8 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x55b245a65180) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007f656f9292fa in QSGRenderThread::run() (this=0x55b245a65180) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b245a65180) at
thread/qthread_unix.cpp:360
#10 0x00007f656882f6db in start_thread (arg=0x7f64f519b700) at
pthread_create.c:463
#11 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f64f599c700 (LWP 5110)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2461eed08) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b2461eecb8, cond=0x55b2461eece0) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b2461eece0,
mutex=0x55b2461eecb8) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f64f599c700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f64f7442700 (LWP 3455)):
#0  0x00007f656b1edbf9 in __GI___poll (fds=0x7f64e0004ba0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f65651275c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65651276dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f656bb40b9b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f64e0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f656bae106a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f64f7441d30, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:225
#5  0x00007f656b8fc3aa in QThread::exec() (this=this@entry=0x55b245add910) at
thread/qthread.cpp:531
#6  0x00007f656f8a2ac6 in QQuickPixmapReader::run() (this=0x55b245add910) at
util/qquickpixmapcache.cpp:962
#7  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b245add910) at
thread/qthread_unix.cpp:360
#8  0x00007f656882f6db in start_thread (arg=0x7f64f7442700) at
pthread_create.c:463
#9  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f64f7e43700 (LWP 3333)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245f6b894) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245f6b840, cond=0x55b245f6b868) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245f6b868,
mutex=0x55b245f6b840) at pthread_cond_wait.c:655
#3  0x00007f656b904aeb in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55b245f6b840) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f656b904aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x55b245f71670, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007f656b904df9 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x55b245f71678, mutex=mutex@entry=0x55b245f71670,
time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f656f928ec8 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x55b245f71668) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007f656f928ec8 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x55b245f715f0) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007f656f9292fa in QSGRenderThread::run() (this=0x55b245f715f0) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b245f715f0) at
thread/qthread_unix.cpp:360
#10 0x00007f656882f6db in start_thread (arg=0x7f64f7e43700) at
pthread_create.c:463
#11 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f64f8644700 (LWP 3332)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b24604b648) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b24604b5f8, cond=0x55b24604b620) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b24604b620,
mutex=0x55b24604b5f8) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f64f8644700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f6516ffd700 (LWP 3296)):
[KCrash Handler]
#6  0x00007f656b117e97 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f656b119801 in __GI_abort () at abort.c:79
#8  0x00007f656b162897 in __libc_message (action=action@entry=do_abort,
fmt=fmt@entry=0x7f656b28fb9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#9  0x00007f656b16990a in malloc_printerr (str=str@entry=0x7f656b2913f0
"malloc_consolidate(): invalid chunk size") at malloc.c:5350
#10 0x00007f656b169bae in malloc_consolidate (av=av@entry=0x7f656b4c4c40
<main_arena>) at malloc.c:4441
#11 0x00007f656b16d7d8 in _int_malloc (av=av@entry=0x7f656b4c4c40 <main_arena>,
bytes=bytes@entry=1703160) at malloc.c:3703
#12 0x00007f656b1703fa in __GI___libc_malloc (bytes=bytes@entry=1703160) at
malloc.c:3072
#13 0x00007f656c0ff45d in QImageData::create(QSize const&, QImage::Format)
(size=..., format=format@entry=QImage::Format_ARGB32_Premultiplied) at
image/qimage.cpp:152
#14 0x00007f656c0ff61b in QImage::QImage(QSize const&, QImage::Format)
(this=0x7f6516ffc980, size=..., format=QImage::Format_ARGB32_Premultiplied) at
image/qimage.cpp:774
#15 0x00007f656f91df13 in QSGDefaultPainterNode::updateRenderTarget()
(this=0x7f6508038a90) at scenegraph/util/qsgdefaultpainternode.cpp:303
#16 0x00007f656f91e34d in QSGDefaultPainterNode::update() (this=0x7f6508038a90)
at scenegraph/util/qsgdefaultpainternode.cpp:198
#17 0x00007f656f9c13f4 in QQuickPaintedItem::updatePaintNode(QSGNode*,
QQuickItem::UpdatePaintNodeData*) (this=<optimized out>, oldNode=<optimized
out>, data=<optimized out>) at items/qquickpainteditem.cpp:611
#18 0x00007f656f97be58 in QQuickWindowPrivate::updateDirtyNode(QQuickItem*)
(this=this@entry=0x55b2453ef020, item=item@entry=0x7f6554019d50) at
items/qquickwindow.cpp:3532
#19 0x00007f656f97c6e3 in QQuickWindowPrivate::updateDirtyNodes()
(this=this@entry=0x55b2453ef020) at items/qquickwindow.cpp:3277
#20 0x00007f656f97da62 in QQuickWindowPrivate::syncSceneGraph()
(this=this@entry=0x55b2453ef020) at items/qquickwindow.cpp:437
#21 0x00007f656f924614 in QSGRenderThread::sync(bool)
(this=this@entry=0x55b245df13c0, inExpose=<optimized out>) at
scenegraph/qsgthreadedrenderloop.cpp:563
#22 0x00007f656f925a24 in QSGRenderThread::syncAndRender()
(this=this@entry=0x55b245df13c0) at scenegraph/qsgthreadedrenderloop.cpp:610
#23 0x00007f656f9292b8 in QSGRenderThread::run() (this=0x55b245df13c0) at
scenegraph/qsgthreadedrenderloop.cpp:730
#24 0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b245df13c0) at
thread/qthread_unix.cpp:360
#25 0x00007f656882f6db in start_thread (arg=0x7f6516ffd700) at
pthread_create.c:463
#26 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f6503043700 (LWP 3294)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245f1cf78) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245f1cf28, cond=0x55b245f1cf50) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245f1cf50,
mutex=0x55b245f1cf28) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f6503043700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f65177fe700 (LWP 2362)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2456972b4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245697260, cond=0x55b245697288) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245697288,
mutex=0x55b245697260) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f65177fe700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f6517fff700 (LWP 2361)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2456972b4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245697260, cond=0x55b245697288) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245697288,
mutex=0x55b245697260) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f6517fff700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f6538ff9700 (LWP 2360)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2456972b4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245697260, cond=0x55b245697288) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245697288,
mutex=0x55b245697260) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f6538ff9700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f65397fa700 (LWP 2359)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2456972b4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245697260, cond=0x55b245697288) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245697288,
mutex=0x55b245697260) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f65397fa700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f6539ffb700 (LWP 2358)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245696bb4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245696b60, cond=0x55b245696b88) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245696b88,
mutex=0x55b245696b60) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f6539ffb700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f653a7fc700 (LWP 2357)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245696bb4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245696b60, cond=0x55b245696b88) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245696b88,
mutex=0x55b245696b60) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f653a7fc700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f653affd700 (LWP 2356)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245696bb4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245696b60, cond=0x55b245696b88) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245696b88,
mutex=0x55b245696b60) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f653affd700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f653b7fe700 (LWP 2355)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245696bb4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245696b60, cond=0x55b245696b88) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245696b88,
mutex=0x55b245696b60) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f653b7fe700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f653bfff700 (LWP 2354)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245696bb4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245696b60, cond=0x55b245696b88) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245696b88,
mutex=0x55b245696b60) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f653bfff700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f6540990700 (LWP 2353)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245696bb4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245696b60, cond=0x55b245696b88) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245696b88,
mutex=0x55b245696b60) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f6540990700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f6541191700 (LWP 2352)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b2456929d8) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245692988, cond=0x55b2456929b0) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b2456929b0,
mutex=0x55b245692988) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f6541191700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f65421d4700 (LWP 2351)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245691f98) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245691f48, cond=0x55b245691f70) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245691f70,
mutex=0x55b245691f48) at pthread_cond_wait.c:655
#3  0x00007f65470d32bb in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f65470d2eb7 in  () at /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f656882f6db in start_thread (arg=0x7f65421d4700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f6553fff700 (LWP 2338)):
#0  0x00007f656b1e90b4 in __GI___libc_read (fd=18, buf=0x7f6553ffeb70,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f656516c2d0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f65651270b7 in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6565127570 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f65651276dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f656bb40b9b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f6548000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f656bae106a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f6553ffed80, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:225
#7  0x00007f656b8fc3aa in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:531
#8  0x00007f656f3d0815 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b24552b080) at
thread/qthread_unix.cpp:360
#10 0x00007f656882f6db in start_thread (arg=0x7f6553fff700) at
pthread_create.c:463
#11 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f655a41a700 (LWP 2237)):
#0  0x00007f656516d670 in g_mutex_unlock () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f6565127169 in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6565127650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f65651276dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f656bb40b9b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f654c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f656bae106a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f655a419d70, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:225
#6  0x00007f656b8fc3aa in QThread::exec() (this=<optimized out>) at
thread/qthread.cpp:531
#7  0x00007f656cbf50e5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x7f656ce6cd80) at
thread/qthread_unix.cpp:360
#9  0x00007f656882f6db in start_thread (arg=0x7f655a41a700) at
pthread_create.c:463
#10 0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f655c604700 (LWP 2231)):
#0  0x00007f656b1edbf9 in __GI___poll (fds=0x7f655c603ca8, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6570500747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f657050236a in xcb_wait_for_event () at
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f655efd5e10 in QXcbEventQueue::run() (this=0x55b2452ac190) at
qxcbeventqueue.cpp:228
#4  0x00007f656b8fdb52 in QThreadPrivate::start(void*) (arg=0x55b2452ac190) at
thread/qthread_unix.cpp:360
#5  0x00007f656882f6db in start_thread (arg=0x7f655c604700) at
pthread_create.c:463
#6  0x00007f656b1fa88f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f6571acb800 (LWP 2222)):
#0  0x00007f65688359f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55b245e97464) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f65688359f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55b245e97410, cond=0x55b245e97438) at pthread_cond_wait.c:502
#2  0x00007f65688359f3 in __pthread_cond_wait (cond=0x55b245e97438,
mutex=0x55b245e97410) at pthread_cond_wait.c:655
#3  0x00007f656b904aeb in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55b245e97410) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f656b904aeb in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x55b245df1400, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007f656b904df9 in QWaitCondition::wait(QMutex*, unsigned long)
(this=0x55b245df1408, mutex=0x55b245df1400,
time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f656f9260ed in
QSGThreadedRenderLoop::polishAndSync(QSGThreadedRenderLoop::Window*, bool)
(this=this@entry=0x55b24561e020, w=<optimized out>,
inExpose=inExpose@entry=false) at scenegraph/qsgthreadedrenderloop.cpp:1217
#7  0x00007f656f926c2a in
QSGThreadedRenderLoop::handleUpdateRequest(QQuickWindow*) (this=0x55b24561e020,
window=0x7f654c0068e0) at scenegraph/qsgthreadedrenderloop.cpp:1042
#8  0x00007f656f988be4 in QQuickWindow::event(QEvent*) (this=0x7f654c0068e0,
e=0x7ffc4b3c10d0) at items/qquickwindow.cpp:1676
#9  0x00007f656d44deac in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=this@entry=0x55b2452a7fd0, receiver=receiver@entry=0x7f654c0068e0,
e=e@entry=0x7ffc4b3c10d0) at kernel/qapplication.cpp:3703
#10 0x00007f656d4554b0 in QApplication::notify(QObject*, QEvent*)
(this=0x7ffc4b3c1720, receiver=0x7f654c0068e0, e=0x7ffc4b3c10d0) at
kernel/qapplication.cpp:3449
#11 0x00007f656bae2f08 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x7f654c0068e0, event=0x7ffc4b3c10d0) at
kernel/qcoreapplication.cpp:1095
#12 0x00007f656c0a7f83 in QPlatformWindow::deliverUpdateRequest()
(this=<optimized out>) at kernel/qplatformwindow.cpp:793
#13 0x00007f656c0a7f83 in QPlatformWindow::windowEvent(QEvent*)
(this=<optimized out>, event=<optimized out>) at kernel/qplatformwindow.cpp:478
#14 0x00007f656d4554cb in QApplication::notify(QObject*, QEvent*)
(this=0x7ffc4b3c1720, receiver=0x7f654c0068e0, e=0x7ffc4b3c1380) at
kernel/qapplication.cpp:2909
#15 0x00007f656bae2f08 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x7f654c0068e0, event=0x7ffc4b3c1380) at
kernel/qcoreapplication.cpp:1095
#16 0x00007f656bb40009 in QTimerInfoList::activateTimers()
(this=0x55b245307a40) at kernel/qtimerinfo_unix.cpp:643
#17 0x00007f656bb407d1 in timerSourceDispatch(GSource*, GSourceFunc, gpointer)
(source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:183
#18 0x00007f6565127417 in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f6565127650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f65651276dc in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f656bb40b7f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x55b24531e520, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#22 0x00007f656bae106a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffc4b3c15d0, flags=..., flags@entry=...) at
kernel/qeventloop.cpp:225
#23 0x00007f656baea3e0 in QCoreApplication::exec() () at
kernel/qcoreapplication.cpp:1403
#24 0x000055b244b85cef in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at ./shell/main.cpp:219

Possible duplicates by query: bug 414938, bug 414834, bug 414632, bug 414629,
bug 414353.

Reported using DrKonqi

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