https://bugs.kde.org/show_bug.cgi?id=412938
            Bug ID: 412938
           Summary: Plasma crash
           Product: plasmashell
           Version: 5.16.90
          Platform: Fedora RPMs
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: k...@davidedmundson.co.uk
          Reporter: germano.massu...@gmail.com
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Application: plasmashell (5.16.90)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.2.18-200.fc30.x86_64 x86_64
Distribution: "Fedora release 30 (Thirty)"

-- Information about the crash:
I was using KDE Plasma when Plasma crashed. I cannot provide any particular
info

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
29        return SYSCALL_CANCEL (poll, fds, nfds, timeout);
[Current thread is 1 (Thread 0x7facd16acc80 (LWP 3325))]

Thread 16 (Thread 0x7fabf1e68700 (LWP 5108)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x56216042fb54) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x56216042fb00, cond=0x56216042fb28) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x56216042fb28,
mutex=0x56216042fb00) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x56216042fb00) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x56215b0aa580, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x56215b0aa588, mutex=mutex@entry=0x56215b0aa580,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x56215b0aa578) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x56215b0aa500) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x56215b0aa500) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x56215b0aa500) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fac0f43f700 (LWP 4582)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x56215b02d8c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x56215b02d870, cond=0x56215b02d898) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x56215b02d898,
mutex=0x56215b02d870) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x56215b02d870) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x56216191fd20, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x56216191fd28, mutex=mutex@entry=0x56216191fd20,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x56216191fd18) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x56216191fca0) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x56216191fca0) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x56216191fca0) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fabf2e6a700 (LWP 3898)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x5621603b4d00) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x5621603b4cb0, cond=0x5621603b4cd8) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x5621603b4cd8,
mutex=0x5621603b4cb0) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x5621603b4cb0) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x5621602ff1c0, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x5621602ff1c8, mutex=mutex@entry=0x5621602ff1c0,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x5621602ff1b8) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x5621602ff140) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x5621602ff140) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x5621602ff140) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fac00cde700 (LWP 3879)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x56215ebab0d4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x56215ebab080, cond=0x56215ebab0a8) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x56215ebab0a8,
mutex=0x56215ebab080) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x56215ebab080) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x56215ebb7790, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x56215ebb7798, mutex=mutex@entry=0x56215ebb7790,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x56215ebb7788) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x56215ebb7710) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x56215ebb7710) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x56215ebb7710) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fac01634700 (LWP 3878)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x56215d2ee2d0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x56215d2ee280, cond=0x56215d2ee2a8) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x56215d2ee2a8,
mutex=0x56215d2ee280) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x56215d2ee280) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x56215d2ee010, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x56215d2ee018, mutex=mutex@entry=0x56215d2ee010,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x56215d2ee008) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x56215d2edf90) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x56215d2edf90) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x56215d2edf90) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fac026a9700 (LWP 3863)):
#0  0x00007facd50b9ae7 in __GI___poll (fds=0x7fabfc0060c0, nfds=1,
timeout=3267965) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007facd3c131ce in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7fabfc0060c0, timeout=<optimized out>, context=0x7fabfc000bf0)
at ../glib/gmain.c:4228
#2  0x00007facd3c131ce in g_main_context_iterate
(context=context@entry=0x7fabfc000bf0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3922
#3  0x00007facd3c13303 in g_main_context_iteration (context=0x7fabfc000bf0,
may_block=may_block@entry=1) at ../glib/gmain.c:3988
#4  0x00007facd5643bf3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7fabfc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007facd55ed9eb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fac026a8d60, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007facd5446635 in QThread::exec() (this=this@entry=0x56215d050510) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007fac02d04b3c in KCupsConnection::run() (this=0x56215d050510) at
/usr/src/debug/kde-print-manager-18.12.2-1.fc30.x86_64/libkcups/KCupsConnection.cpp:304
#8  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x56215d050510) at
thread/qthread_unix.cpp:361
#9  0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#10 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fac10021700 (LWP 3746)):
#0  0x00007facd50b559c in __GI___libc_read (nbytes=16, buf=0x7fac10020b30,
fd=20) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007facd50b559c in __GI___libc_read (fd=20,
buf=buf@entry=0x7fac10020b30, nbytes=nbytes@entry=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007facd3c5a72f in read (__nbytes=16, __buf=0x7fac10020b30,
__fd=<optimized out>) at /usr/include/bits/unistd.h:44
#3  0x00007facd3c5a72f in g_wakeup_acknowledge (wakeup=0x7fac9c003560) at
../glib/gwakeup.c:210
#4  0x00007facd3c12d17 in g_main_context_check
(context=context@entry=0x7fac08000bf0, max_priority=2147483647,
fds=fds@entry=0x7fac08006690, n_fds=n_fds@entry=1) at ../glib/gmain.c:3705
#5  0x00007facd3c13172 in g_main_context_iterate
(context=context@entry=0x7fac08000bf0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3924
#6  0x00007facd3c13303 in g_main_context_iteration (context=0x7fac08000bf0,
may_block=may_block@entry=1) at ../glib/gmain.c:3988
#7  0x00007facd5643bf3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7fac08000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#8  0x00007facd55ed9eb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fac10020d60, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#9  0x00007facd5446635 in QThread::exec() (this=this@entry=0x562159966290) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#10 0x00007facd6ff2e4a in QQuickPixmapReader::run() (this=0x562159966290) at
util/qquickpixmapcache.cpp:953
#11 0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x562159966290) at
thread/qthread_unix.cpp:361
#12 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#13 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7faca4ef9700 (LWP 3722)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x7fac1bfe9f30) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x56215c60ea40, cond=0x7fac1bfe9f08) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x7fac1bfe9f08,
mutex=0x56215c60ea40) at pthread_cond_wait.c:655
#3  0x00007facd525f950 in __gthread_cond_wait (__mutex=<optimized out>,
__cond=<optimized out>) at
/usr/src/debug/gcc-9.2.1-1.fc30.x86_64/obj-x86_64-redhat-linux/x86_64-redhat-linux/libstdc++-v3/include/x86_64-redhat-linux/bits/gthr-default.h:865
#4  0x00007facd525f950 in
std::condition_variable::wait(std::unique_lock<std::mutex>&) (this=<optimized
out>, __lock=...) at
../../../../../libstdc++-v3/src/c++11/condition_variable.cc:53
#5  0x00007fac1b4e7421 in  () at /lib64/libQt5WebKit.so.5
#6  0x00007fac1b4e755f in  () at /lib64/libQt5WebKit.so.5
#7  0x00007facd52656f4 in std::execute_native_thread_routine(void*)
(__p=0x56215c60e5b0) at ../../../../../libstdc++-v3/src/c++11/thread.cc:80
#8  0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#9  0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7faca772a700 (LWP 3712)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x7facc0f93478 <QTWTF::pageheap_memory+57592>) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7facc0f93428 <QTWTF::pageheap_memory+57512>, cond=0x7facc0f93450
<QTWTF::pageheap_memory+57552>) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x7facc0f93450
<QTWTF::pageheap_memory+57552>, mutex=0x7facc0f93428
<QTWTF::pageheap_memory+57512>) at pthread_cond_wait.c:655
#3  0x00007facc0e946ea in QTWTF::TCMalloc_PageHeap::scavengerThread()
(this=0x7facc0f85380 <QTWTF::pageheap_memory>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#4  0x00007facc0e9470f in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*)
(context=<optimized out>) at
../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#5  0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#6  0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7faca7fff700 (LWP 3705)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x562159ae1d14) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x562159ae1cc0, cond=0x562159ae1ce8) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x562159ae1ce8,
mutex=0x562159ae1cc0) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x562159ae1cc0) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x562159ae5350, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x562159ae5358, mutex=mutex@entry=0x562159ae5350,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x562159ae5348) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x562159ae52d0) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x562159ae52d0) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x562159ae52d0) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7facb19dc700 (LWP 3694)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x5621599cdec4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x5621599cde70, cond=0x5621599cde98) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x5621599cde98,
mutex=0x5621599cde70) at pthread_cond_wait.c:655
#3  0x00007facd544d283 in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x5621599cde70) at thread/qwaitcondition_unix.cpp:146
#4  0x00007facd544d283 in QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=<optimized out>, mutex=0x5621599cedf0, deadline=...) at
thread/qwaitcondition_unix.cpp:225
#5  0x00007facd544d311 in QWaitCondition::wait(QMutex*, unsigned long)
(this=this@entry=0x5621599cedf8, mutex=mutex@entry=0x5621599cedf0,
time=time@entry=18446744073709551615) at
../../include/QtCore/../../src/corelib/kernel/qdeadlinetimer.h:68
#6  0x00007facd707ef59 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x5621599cede8) at scenegraph/qsgthreadedrenderloop.cpp:245
#7  0x00007facd707ef59 in QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x5621599ced70) at scenegraph/qsgthreadedrenderloop.cpp:710
#8  0x00007facd707f1fd in QSGRenderThread::run() (this=0x5621599ced70) at
scenegraph/qsgthreadedrenderloop.cpp:739
#9  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x5621599ced70) at
thread/qthread_unix.cpp:361
#10 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#11 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7facb2d37700 (LWP 3592)):
#0  0x00007facd49183c5 in futex_wait_cancelable (private=0, expected=0,
futex_word=0x5621595cddb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007facd49183c5 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x5621595cdd68, cond=0x5621595cdd90) at pthread_cond_wait.c:502
#2  0x00007facd49183c5 in __pthread_cond_wait (cond=0x5621595cdd90,
mutex=0x5621595cdd68) at pthread_cond_wait.c:655
#3  0x00007facb30596fb in cnd_wait (mtx=0x5621595cdd68, cond=0x5621595cdd90) at
../include/c11/threads_posix.h:155
#4  0x00007facb30596fb in util_queue_thread_func
(input=input@entry=0x5621595cf030) at ../src/util/u_queue.c:272
#5  0x00007facb305930b in impl_thrd_routine (p=<optimized out>) at
../include/c11/threads_posix.h:87
#6  0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#7  0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7facc0cfa700 (LWP 3548)):
#0  0x00007facd50b559c in __GI___libc_read (nbytes=16, buf=0x7facc0cf9b70,
fd=14) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007facd50b559c in __GI___libc_read (fd=14,
buf=buf@entry=0x7facc0cf9b70, nbytes=nbytes@entry=16) at
../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007facd3c5a72f in read (__nbytes=16, __buf=0x7facc0cf9b70,
__fd=<optimized out>) at /usr/include/bits/unistd.h:44
#3  0x00007facd3c5a72f in g_wakeup_acknowledge (wakeup=0x7facb8003590) at
../glib/gwakeup.c:210
#4  0x00007facd3c12d17 in g_main_context_check
(context=context@entry=0x7facac000bf0, max_priority=2147483647,
fds=fds@entry=0x7facac004e30, n_fds=n_fds@entry=1) at ../glib/gmain.c:3705
#5  0x00007facd3c13172 in g_main_context_iterate
(context=context@entry=0x7facac000bf0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3924
#6  0x00007facd3c13303 in g_main_context_iteration (context=0x7facac000bf0,
may_block=may_block@entry=1) at ../glib/gmain.c:3988
#7  0x00007facd5643bf3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7facac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#8  0x00007facd55ed9eb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7facc0cf9da0, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#9  0x00007facd5446635 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#10 0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x5621593b6d10) at
thread/qthread_unix.cpp:361
#11 0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#12 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7facc24fe700 (LWP 3529)):
#0  0x00007facd50b9ae7 in __GI___poll (fds=0x7facb8004a30, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007facd3c131ce in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7facb8004a30, timeout=<optimized out>, context=0x7facb8000bf0)
at ../glib/gmain.c:4228
#2  0x00007facd3c131ce in g_main_context_iterate
(context=context@entry=0x7facb8000bf0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3922
#3  0x00007facd3c13303 in g_main_context_iteration (context=0x7facb8000bf0,
may_block=may_block@entry=1) at ../glib/gmain.c:3988
#4  0x00007facd5643bf3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7facb8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007facd55ed9eb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7facc24fdd80, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007facd5446635 in QThread::exec() (this=this@entry=0x56215921d9a0) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007facd6d09a69 in QQmlThreadPrivate::run() (this=0x56215921d9a0) at
qml/ftw/qqmlthread.cpp:148
#8  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x56215921d9a0) at
thread/qthread_unix.cpp:361
#9  0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#10 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7facc378c700 (LWP 3437)):
#0  0x00007facd50b9ae7 in __GI___poll (fds=0x7facb40144f0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007facd3c131ce in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7facb40144f0, timeout=<optimized out>, context=0x7facb4000bf0)
at ../glib/gmain.c:4228
#2  0x00007facd3c131ce in g_main_context_iterate
(context=context@entry=0x7facb4000bf0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3922
#3  0x00007facd3c13303 in g_main_context_iteration (context=0x7facb4000bf0,
may_block=may_block@entry=1) at ../glib/gmain.c:3988
#4  0x00007facd5643bf3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7facb4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007facd55ed9eb in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7facc378bd70, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007facd5446635 in QThread::exec() (this=this@entry=0x7facd5ed6060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007facd5e52f4a in QDBusConnectionManager::run() (this=0x7facd5ed6060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:178
#8  0x00007facd5447786 in QThreadPrivate::start(void*) (arg=0x7facd5ed6060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:361
#9  0x00007facd49124c0 in start_thread (arg=<optimized out>) at
pthread_create.c:479
#10 0x00007facd50c4553 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7facd16acc80 (LWP 3325)):
[KCrash Handler]
#7  0x00007facd5619479 in QMetaObject::activate(QObject*, int, void**)
(sender=0x56215caa04e0, signal_index=8, argv=0x0) at kernel/qobject.cpp:3850
#8  0x00007facd6a8cf78 in non-virtual thunk to
VDMModelDelegateDataType::notify(QQmlAdaptorModel const&,
QList<QQmlDelegateModelItem*> const&, int, int, QVector<int> const&) const ()
at /usr/include/qt5/QtCore/qlist.h:116
#9  0x00007facd6d53ae6 in
QQmlAdaptorModel::notify(QList<QQmlDelegateModelItem*> const&, int, int,
QVector<int> const&) const (roles=..., count=11, index=0, items=...,
this=0x56216040e1b8) at
../../include/QtQml/5.12.4/QtQml/private/../../../../../src/qml/util/qqmladaptormodel_p.h:151
#10 0x00007facd6d53ae6 in QQmlDelegateModel::_q_itemsChanged(int, int,
QVector<int> const&) (this=<optimized out>, index=0, count=11, roles=...) at
types/qqmldelegatemodel.cpp:1246
#11 0x00007facd6d5bf83 in QQmlDelegateModel::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (_o=_o@entry=0x562160454f90,
_c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=12,
_a=_a@entry=0x7ffe74143d90) at .moc/moc_qqmldelegatemodel_p.cpp:202
#12 0x00007facd6d5c383 in QQmlDelegateModel::qt_metacall(QMetaObject::Call,
int, void**) (this=0x562160454f90, _c=QMetaObject::InvokeMetaMethod, _id=12,
_a=0x7ffe74143d90) at .moc/moc_qqmldelegatemodel_p.cpp:334
#13 0x00007facd5618e3c in QMetaObject::activate(QObject*, int, int, void**)
(sender=0x56216030dc40, signalOffset=<optimized out>,
local_signal_index=<optimized out>, argv=<optimized out>) at
kernel/qobject.cpp:3819
#14 0x00007facd55a55a0 in QAbstractItemModel::dataChanged(QModelIndex const&,
QModelIndex const&, QVector<int> const&) (this=this@entry=0x56216030dc40,
_t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:556
#15 0x00007fac0f72c996 in FunnelModel::setSourceModel(QAbstractItemModel*)
(this=0x56216030dc40, model=0x56215986dab0) at
/usr/include/qt5/QtCore/qabstractitemmodel.h:60
#16 0x00007fac0f6fcf6f in ForwardingModel::qt_static_metacall(QObject*,
QMetaObject::Call, int, void**) (_o=_o@entry=0x56216030dc40,
_c=_c@entry=QMetaObject::WriteProperty, _id=_id@entry=0,
_a=_a@entry=0x7ffe741440a0) at
/usr/src/debug/plasma-workspace-5.16.90-1.fc30.x86_64/x86_64-redhat-linux-gnu/applets/kicker/kickerplugin_autogen/7RBZBFH7CH/moc_forwardingmodel.cpp:147
#17 0x00007fac0f6ff93b in ForwardingModel::qt_metacall(QMetaObject::Call, int,
void**) (this=0x56216030dc40, _c=QMetaObject::WriteProperty, _id=0,
_a=0x7ffe741440a0) at
/usr/src/debug/plasma-workspace-5.16.90-1.fc30.x86_64/x86_64-redhat-linux-gnu/applets/kicker/kickerplugin_autogen/7RBZBFH7CH/moc_forwardingmodel.cpp:195
#18 0x00007facd6c4e3d9 in QQmlVMEMetaObject::metaCall(QObject*,
QMetaObject::Call, int, void**) () at qml/qqmlvmemetaobject.cpp:907
#19 0x00007facd6c631e4 in QQmlPropertyData::writeProperty(QObject*, void*,
QFlags<QQmlPropertyData::WriteFlag>) const (flags=..., value=<optimized out>,
target=<optimized out>, this=<optimized out>) at
../../include/QtQml/5.12.4/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:350
#20 0x00007facd6c631e4 in QQmlPropertyPrivate::write(QObject*, QQmlPropertyData
const&, QVariant const&, QQmlContextData*, QFlags<QQmlPropertyData::WriteFlag>)
(object=0x56215cdbf370, property=..., value=..., context=<optimized out>,
flags=...) at qml/qqmlproperty.cpp:1234
#21 0x00007facd6b9fe7c in
QV4::QObjectWrapper::setProperty(QV4::ExecutionEngine*, QObject*,
QQmlPropertyData*, QV4::Value const&) (engine=0x56215921e8d0,
object=0x56215cdbf370, property=0x7facb83b6858, value=...) at
/usr/include/qt5/QtCore/qflags.h:121
#22 0x00007facd6ba08fe in
QV4::QObjectWrapper::setQmlProperty(QV4::ExecutionEngine*, QQmlContextData*,
QObject*, QV4::String*, QV4::QObjectWrapper::RevisionMode, QV4::Value const&)
(engine=0x56215921e8d0, qmlContext=<optimized out>, object=0x56215cdbf370,
name=<optimized out>, revisionMode=QV4::QObjectWrapper::IgnoreRevision,
value=...) at jsruntime/qv4qobjectwrapper.cpp:437
#23 0x00007facd6ba0a51 in QV4::QObjectWrapper::virtualPut(QV4::Managed*,
QV4::PropertyKey, QV4::Value const&, QV4::Value*) () at
/usr/include/c++/9/bits/atomic_base.h:413
#24 0x00007facd6b1d35d in QV4::Object::put(QV4::StringOrSymbol*, QV4::Value
const&, QV4::Value*) (receiver=0x7facc18bf770, v=..., name=0x7facc18bf778,
this=0x7facc18bf770) at
../../include/QtQml/5.12.4/QtQml/private/../../../../../src/qml/jsruntime/qv4string_p.h:171
#25 0x00007facd6b1d35d in QV4::Lookup::setterFallback(QV4::Lookup*,
QV4::ExecutionEngine*, QV4::Value&, QV4::Value const&) (l=<optimized out>,
engine=0x56215921e8d0, object=..., value=...) at jsruntime/qv4lookup.cpp:487
#26 0x00007faca6d355a4 in  ()
#27 0x0000000000000000 in  ()
[Inferior 1 (process 3325) detached]

Possible duplicates by query: bug 412871, bug 412864, bug 412859, bug 412857,
bug 412845.

Reported using DrKonqi

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