Bug 436869

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:
Periodically when I normally close System Monitor I get a crash report message.

The crash can be reproduced sometimes.

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

[New LWP 8438]
[New LWP 8439]
[New LWP 8441]
[New LWP 8442]
[New LWP 8443]
[New LWP 8444]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f2e2ff35aff in __GI___poll (fds=0x7ffe08df2a28, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f2e2cbda340 (LWP 8436))]

Thread 7 (Thread 0x7f2e12f00700 (LWP 8444)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a365cb8098) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a365cb8048, cond=0x55a365cb8070) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a365cb8070, mutex=0x55a365cb8048) at pthread_cond_wait.c:638
#3  0x00007f2e195cfb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f2e195cf75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f2e2fc34609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2e2ff42293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f2e0af00700 (LWP 8443)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a365cb8098) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a365cb8048, cond=0x55a365cb8070) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a365cb8070, mutex=0x55a365cb8048) at pthread_cond_wait.c:638
#3  0x00007f2e195cfb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f2e195cf75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f2e2fc34609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2e2ff42293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f2e13701700 (LWP 8442)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a365cb8098) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a365cb8048, cond=0x55a365cb8070) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a365cb8070, mutex=0x55a365cb8048) at pthread_cond_wait.c:638
#3  0x00007f2e195cfb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f2e195cf75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f2e2fc34609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2e2ff42293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2e13f02700 (LWP 8441)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55a365cb8098) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a365cb8048, cond=0x55a365cb8070) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a365cb8070, mutex=0x55a365cb8048) at pthread_cond_wait.c:638
#3  0x00007f2e195cfb5b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f2e195cf75b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f2e2fc34609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2e2ff42293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2e29c2e700 (LWP 8439)):
#0  0x00007f2e302c00c1 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f2e30500ece in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f2e2ee3f8ef in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2e2ee4029b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2e2ee404a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2e30500ffb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2e304a51eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2e302bfa52 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2e30762f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f2e302c0bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2e2fc34609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007f2e2ff42293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2e2bcdc700 (LWP 8438)):
#0  0x00007f2e2ff35aff in __GI___poll (fds=0x7f2e2bcdbc68, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2e2ec0ac1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2e2ec0c90a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2e2c2d4d58 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f2e302c0bec in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2e2fc34609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2e2ff42293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2e2cbda340 (LWP 8436)):
[KCrash Handler]
#4  0x00007f2e2a7b581f in QQuickItem::setVisible(bool) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f2e1b6a213a in ToolBarLayoutDelegate::ensureItemVisibility (this=0x55a36887c8b0) at ./src/toolbarlayoutdelegate.h:87
#6  0x00007f2e304dd6fe in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2e2a7bdc9c in QQuickItemPrivate::setEffectiveVisibleRecur(bool) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f2e2a7c3c6d in QQuickItem::setParentItem(QQuickItem*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007f2e2a7c4b0c in QQuickItem::~QQuickItem() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f2e1b01e602 in QQuickButton::~QQuickButton (this=0x55a36861a760, __in_chrg=<optimized out>) at ../../../include/QtQuickTemplates2/5.15.2/QtQuickTemplates2/private/../../../../../src/quicktemplates2/qquickbutton_p.h:57
#11 QQuickToolButton::~QQuickToolButton (this=0x55a36861a760, __in_chrg=<optimized out>) at ../../../include/QtQuickTemplates2/5.15.2/QtQuickTemplates2/private/../../../../../src/quicktemplates2/qquicktoolbutton_p.h:55
#12 QQmlPrivate::QQmlElement<QQuickToolButton>::~QQmlElement (this=0x55a36861a760, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:144
#13 QQmlPrivate::QQmlElement<QQuickToolButton>::~QQmlElement (this=0x55a36861a760, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:144
#14 0x00007f2e1b6a0dde in ToolBarLayoutDelegate::~ToolBarLayoutDelegate (this=0x55a36887c8b0, __in_chrg=<optimized out>) at ./src/toolbarlayoutdelegate.cpp:83
#15 0x00007f2e1b6a0dfd in ToolBarLayoutDelegate::~ToolBarLayoutDelegate (this=0x55a36887c8b0, __in_chrg=<optimized out>) at ./src/toolbarlayoutdelegate.cpp:69
#16 0x00007f2e1b69d6f3 in std::default_delete<ToolBarLayoutDelegate>::operator() (this=0x55a36885c4d0, __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=0x55a36885c4d0, __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=0x55a36885c4c8, __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=0x55a36885c4c8) 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=0x55a36885c4c8) 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=0x55a36885c4c0, this=<optimized out>) at /usr/include/c++/9/bits/hashtable_policy.h:2102
#22 0x00007f2e1b6a04b7 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=0x55a3668c9a88, __bkt=<optimized out>, __prev_n=<optimized out>, __n=<optimized out>) at /usr/include/c++/9/bits/hashtable_policy.h:340
#23 0x00007f2e1b69ef5b 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=0x55a3668c9a88) 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=0x55a3668c9a88) 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=0x55a3668c9a88) at /usr/include/c++/9/bits/unordered_map.h:798
#26 ToolBarLayout::<lambda(QObject*)>::operator() (__closure=0x55a367cf8780, action=0x55a367623780) 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_=0x55a367cf8770) 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_=0x55a367cf8770, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:436
#31 0x00007f2e304dd6fe in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f2e304d6b83 in QObject::destroyed(QObject*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f2e304db955 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f2e1b02297f in QQmlPrivate::QQmlElement<QQuickAction>::~QQmlElement (this=0x55a367623780, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:142
#35 QQmlPrivate::QQmlElement<QQuickAction>::~QQmlElement (this=0x55a367623780, __in_chrg=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtQml/qqmlprivate.h:144
#36 0x00007f2e304d0cfe in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f2e304db726 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f2e2a7c4c2a in QQuickItem::~QQuickItem() () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#39 0x00007f2e11ae3a49 in ?? () from /usr/lib/x86_64-linux-gnu/qt5/qml/org/kde/ksysguard/faces/libFacesPlugin.so
#40 0x00007f2e304d0cfe in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x00007f2e304db726 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f2e1b494c4a in KSysGuard::SensorFaceController::~SensorFaceController() () from /lib/x86_64-linux-gnu/libKSysGuardSensorFaces.so.1
#43 0x00007f2e1b494d6d in KSysGuard::SensorFaceController::~SensorFaceController() () from /lib/x86_64-linux-gnu/libKSysGuardSensorFaces.so.1
#44 0x00007f2e304d0cfe in QObjectPrivate::deleteChildren() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#45 0x00007f2e304db726 in QObject::~QObject() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#46 0x00007f2e31aaed64 in QQmlEngine::~QQmlEngine() () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#47 0x000055a36481b068 in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:133
[Inferior 1 (process 8436) detached]

Reported using DrKonqi