Application: plasma-systemmonitor (5.21.5)

Qt Version: 5.15.2
Frameworks Version: 5.81.0
Operating System: Linux 5.4.0-72-generic x86_64
Windowing System: X11
Drkonqi Version: 5.21.5
Distribution: KDE neon User Edition 5.21

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

I can reproduce the crash everytime. To reproduce it, open System Monitor (by default it will be in the Overview tab), go to the 'Processes' tab, then imediatelly go back to 'Overview' and close it. Upon closing, Dr. Konki will pop-up telling an error has happened. The crash only happens when following these instructions in the right order. No other tab triggers the crash.

Operating System: KDE neon 5.21
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.81.0
Qt Version: 5.15.2
Kernel Version: 5.4.0-72-generic
OS Type: 64-bit
Graphics Platform: X11
Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz
Memory: 7,7 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520

The crash can be reproduced every time.

-- Backtrace:
Application: System Monitor (plasma-systemmonitor), signal: Segmentation fault

[New LWP 5954]
[New LWP 5955]
[New LWP 5960]
[New LWP 5961]
[New LWP 5962]
[New LWP 5963]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fd29033faff in __GI___poll (fds=0x7ffd4d5133e8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7fd28cfe4340 (LWP 5952))]

Thread 7 (Thread 0x7fd27257a700 (LWP 5963)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5571890ed218) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5571890ed1c8, cond=0x5571890ed1f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5571890ed1f0, mutex=0x5571890ed1c8) at pthread_cond_wait.c:638
#3  0x00007fd2798d4e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fd2798d4a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fd29003e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fd29034c293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fd272d7b700 (LWP 5962)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5571890ed218) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5571890ed1c8, cond=0x5571890ed1f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5571890ed1f0, mutex=0x5571890ed1c8) at pthread_cond_wait.c:638
#3  0x00007fd2798d4e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fd2798d4a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fd29003e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fd29034c293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fd27357c700 (LWP 5961)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5571890ed218) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5571890ed1c8, cond=0x5571890ed1f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5571890ed1f0, mutex=0x5571890ed1c8) at pthread_cond_wait.c:638
#3  0x00007fd2798d4e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fd2798d4a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fd29003e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fd29034c293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fd273d7d700 (LWP 5960)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5571890ed218) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5571890ed1c8, cond=0x5571890ed1f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5571890ed1f0, mutex=0x5571890ed1c8) at pthread_cond_wait.c:638
#3  0x00007fd2798d4e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fd2798d4a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fd29003e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fd29034c293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fd28a53a700 (LWP 5955)):
#0  0x00007fd28f249b26 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd28f24a2e8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd28f24a4a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd29090affb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd2908af1eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd2906c9a52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd290b6cf4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fd2906cabec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fd29003e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007fd29034c293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fd28c5e8700 (LWP 5954)):
#0  0x00007fd29033faff in __GI___poll (fds=0x7fd28c5e7c68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd28f014c1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fd28f01690a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fd28cbe0d58 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fd2906cabec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd29003e609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007fd29034c293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fd28cfe4340 (LWP 5952)):
[KCrash Handler]
#4  0x00005571894ebe50 in ?? ()
#5  0x00007fd27bfa113a in ToolBarLayoutDelegate::ensureItemVisibility (this=0x55718b1884d0) at ./src/toolbarlayoutdelegate.h:87
#6  0x00007fd2908e76fe in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fd28b0c9c9c in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007fd28b0cfc6d in QQuickItem::setParentItem(QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007fd28b0d0b0c in QQuickItem::~QQuickItem() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007fd27b893602 in QQuickButton::~QQuickButton (this=0x55718ae37f40, __in_chrg=<optimized out>) at ../../../include/QtQuickTemplates2/5.15.2/QtQuickTemplates2/private/../../../../../src/quicktemplates2/qquickbutton_p.h:57
#11 QQuickToolButton::~QQuickToolButton (this=0x55718ae37f40, __in_chrg=<optimized out>) at ../../../include/QtQuickTemplates2/5.15.2/QtQuickTemplates2/private/../../../../../src/quicktemplates2/qquicktoolbutton_p.h:55
#12 QQmlPrivate::QQmlElement<QQuickToolButton>::~QQmlElement (this=0x55718ae37f40, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:144
#13 QQmlPrivate::QQmlElement<QQuickToolButton>::~QQmlElement (this=0x55718ae37f40, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:144
#14 0x00007fd27bf9fdde in ToolBarLayoutDelegate::~ToolBarLayoutDelegate (this=0x55718b1884d0, __in_chrg=<optimized out>) at ./src/toolbarlayoutdelegate.cpp:83
#15 0x00007fd27bf9fdfd in ToolBarLayoutDelegate::~ToolBarLayoutDelegate (this=0x55718b1884d0, __in_chrg=<optimized out>) at ./src/toolbarlayoutdelegate.cpp:69
#16 0x00007fd27bf9c6f3 in std::default_delete<ToolBarLayoutDelegate>::operator() (this=0x557189a044c0, __ptr=<optimized out>) at /usr/include/c++/9/bits/unique_ptr.h:75
#17 std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> >::~unique_ptr (this=0x557189a044c0, __in_chrg=<optimized out>) at /usr/include/c++/9/bits/unique_ptr.h:292
#18 std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >::~pair (this=0x557189a044b8, __in_chrg=<optimized out>) at /usr/include/c++/9/bits/stl_pair.h:208
#19 __gnu_cxx::new_allocator<std::__detail::_Hash_node<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >, false> >::destroy<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > > > (this=<optimized out>, __p=0x557189a044b8) at /usr/include/c++/9/ext/new_allocator.h:153
#20 std::allocator_traits<std::allocator<std::__detail::_Hash_node<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >, false> > >::destroy<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > > > (__a=..., __p=0x557189a044b8) at /usr/include/c++/9/bits/alloc_traits.h:497
#21 std::__detail::_Hashtable_alloc<std::allocator<std::__detail::_Hash_node<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >, false> > >::_M_deallocate_node (__n=0x557189a044b0, this=<optimized out>) at /usr/include/c++/9/bits/hashtable_policy.h:2102
#22 0x00007fd27bf9f4b7 in std::_Hashtable<QObject*, std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >, std::allocator<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > > >, std::__detail::_Select1st, std::equal_to<QObject*>, std::hash<QObject*>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<false, false, true> >::_M_erase (this=this@entry=0x55718a6f5df8, __bkt=<optimized out>, __prev_n=<optimized out>, __n=<optimized out>) at /usr/include/c++/9/bits/hashtable_policy.h:340
#23 0x00007fd27bf9df5b in std::_Hashtable<QObject*, std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >, std::allocator<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > > >, std::__detail::_Select1st, std::equal_to<QObject*>, std::hash<QObject*>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<false, false, true> >::erase (__it=..., this=0x55718a6f5df8) at /usr/include/c++/9/bits/hashtable.h:1621
#24 std::_Hashtable<QObject*, std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > >, std::allocator<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > > >, std::__detail::_Select1st, std::equal_to<QObject*>, std::hash<QObject*>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<false, false, true> >::erase (__it=..., this=0x55718a6f5df8) at /usr/include/c++/9/bits/hashtable.h:768
#25 std::unordered_map<QObject*, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> >, std::hash<QObject*>, std::equal_to<QObject*>, std::allocator<std::pair<QObject* const, std::unique_ptr<ToolBarLayoutDelegate, std::default_delete<ToolBarLayoutDelegate> > > > >::erase (__position=..., this=0x55718a6f5df8) at /usr/include/c++/9/bits/unordered_map.h:798
#26 ToolBarLayout::<lambda(QObject*)>::operator() (__closure=0x55718ab46ba0, action=0x55718a7f4c70) at ./src/toolbarlayout.cpp:122
#27 QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<QObject*>, void, ToolBarLayout::addAction(QObject*)::<lambda(QObject*)> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:146
#28 QtPrivate::Functor<ToolBarLayout::addAction(QObject*)::<lambda(QObject*)>, 1>::call<QtPrivate::List<QObject*>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:256
#29 QtPrivate::QFunctorSlotObject<ToolBarLayout::addAction(QObject*)::<lambda(QObject*)>, 1, QtPrivate::List<QObject*>, void>::impl (which=1, r=<optimized out>, ret=<optimized out>, a=<optimized out>, this_=0x55718ab46b90) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:443
#30 QtPrivate::QFunctorSlotObject<ToolBarLayout::addAction(QObject*)::<lambda(QObject*)>, 1, QtPrivate::List<QObject*>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=0x55718ab46b90, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:436
#31 0x00007fd2908e76fe in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fd2908e0b83 in QObject::destroyed(QObject*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007fd2908e5955 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007fd27b89797f in QQmlPrivate::QQmlElement<QQuickAction>::~QQmlElement (this=0x55718a7f4c70, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:142
#35 QQmlPrivate::QQmlElement<QQuickAction>::~QQmlElement (this=0x55718a7f4c70, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:144
#36 0x00007fd2908dacfe in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007fd2908e5726 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fd28b0d0c2a in QQuickItem::~QQuickItem() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007fd27111aa49 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/ksysguard/faces/libFacesPlugin.so
#40 0x00007fd2908dacfe in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007fd2908e5726 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007fd27bd94c4a in KSysGuard::SensorFaceController::~SensorFaceController() () from /lib/x86_64-linux-gnu/libKSysGuardSensorFaces.so.1
#43 0x00007fd27bd94d6d in KSysGuard::SensorFaceController::~SensorFaceController() () from /lib/x86_64-linux-gnu/libKSysGuardSensorFaces.so.1
#44 0x00007fd2908dacfe in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007fd2908e5726 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007fd291eb8d64 in QQmlEngine::~QQmlEngine() () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#47 0x0000557187093068 in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:133
[Inferior 1 (process 5952) detached]

Reported using DrKonqi