Bug 430175

Application: systemsettings5 (5.20.4)

Qt Version: 5.15.2
Frameworks Version: 5.76.0
Operating System: Linux 5.8.0-31-generic x86_64
Windowing system: X11
Distribution: KDE neon User Edition 5.20

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

I tried to download the Plasma theme "indigo" from the KDE UI (there are two themes by that name; the one in question was the one by phob1an), and it crashed as soon as I pressed the install button. I tried again, and it crashed again. On the third try it installed and worked fine. It crashed before it would have had a chance to download the theme, so it does not appear to be something in the theme itself.

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault

[New LWP 67737]
[New LWP 67738]
[New LWP 67739]
[New LWP 67740]
[New LWP 67741]
[New LWP 67757]
[New LWP 67758]
[New LWP 67762]
[New LWP 67763]
[New LWP 67764]
[New LWP 67850]
[New LWP 67861]
[New LWP 67862]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007fdd8bf0266f in __GI___poll (fds=0x7ffd915550e8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7fdd87ba7840 (LWP 67734))]

Thread 14 (Thread 0x7fdccfe6f640 (LWP 67862)):
#0  __libc_disable_asynccancel (oldtype=<optimized out>) at ../nptl/cancellation.c:78
#1  0x00007fdd8befdd01 in __GI___libc_read (nbytes=<optimized out>, buf=<optimized out>, fd=<optimized out>) at ../sysdeps/unix/sysv/linux/read.c:26
#2  __GI___libc_read (fd=<optimized out>, buf=<optimized out>, nbytes=<optimized out>) at ../sysdeps/unix/sysv/linux/read.c:24
#3  0x00007fdd8a05289f in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdd8a009cfe in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdd8a00a152 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fdd8c4cdfbb in QEventDispatcherGlib::processEvents (this=0x7fdcf0186a80, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7fdccfe6ec80, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#9  0x00007fdd8c28ca12 in QThread::exec (this=this@entry=0x563a7665fd10) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#10 0x00007fdd8b74f38a in QQuickPixmapReader::run (this=0x563a7665fd10) at util/qquickpixmapcache.cpp:1024
#11 0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x563a7665fd10) at thread/qthread_unix.cpp:329
#12 0x00007fdd8a91c590 in start_thread (arg=0x7fdccfe6f640) at pthread_create.c:463
#13 0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fdd04a4a640 (LWP 67861)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563a7d43dc14) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563a7d43dbc0, cond=0x563a7d43dbe8) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563a7d43dbe8, mutex=0x563a7d43dbc0) at pthread_cond_wait.c:638
#3  0x00007fdd8c293d1b in QWaitConditionPrivate::wait (deadline=..., this=0x563a7d43dbc0) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=this@entry=0x563a7c42d1d8, mutex=mutex@entry=0x563a7c42d1d0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007fdd8b814814 in QSGRenderThreadEventQueue::takeEvent (wait=true, this=0x563a7c42d1c8) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#6  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x563a7c42d130) at scenegraph/qsgthreadedrenderloop.cpp:936
#7  0x00007fdd8b814c89 in QSGRenderThread::run (this=0x563a7c42d130) at scenegraph/qsgthreadedrenderloop.cpp:1053
#8  0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x563a7c42d130) at thread/qthread_unix.cpp:329
#9  0x00007fdd8a91c590 in start_thread (arg=0x7fdd04a4a640) at pthread_create.c:463
#10 0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fdd72e56640 (LWP 67850)):
#0  0x00007fdd8bf0266f in __GI___poll (fds=0x7fdd60002ee0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdd8a00a1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8c4cdfbb in QEventDispatcherGlib::processEvents (this=0x7fdd60002e90, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7fdd72e55ca0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fdd8c28ca12 in QThread::exec (this=this@entry=0x563a7681d310) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fdd8b499fa9 in QQmlThreadPrivate::run (this=0x563a7681d310) at qml/ftw/qqmlthread.cpp:155
#7  0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x563a7681d310) at thread/qthread_unix.cpp:329
#8  0x00007fdd8a91c590 in start_thread (arg=0x7fdd72e56640) at pthread_create.c:463
#9  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fdd0524b640 (LWP 67764)):
#0  0x00007fdd8a0066f9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fdd8a008185 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdd8a00966b in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8a00a0db in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdd8c4cdfbb in QEventDispatcherGlib::processEvents (this=0x7fdcec000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7fdd0524acc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#7  0x00007fdd8c28ca12 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#8  0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x563a782e77c0) at thread/qthread_unix.cpp:329
#9  0x00007fdd8a91c590 in start_thread (arg=0x7fdd0524b640) at pthread_create.c:463
#10 0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fdd05a4c640 (LWP 67763)):
#0  __GI___libc_read (nbytes=16, buf=0x7fdd05a4bbf0, fd=31) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=31, buf=0x7fdd05a4bbf0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fdd8a05289f in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8a009cfe in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdd8a00a152 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdd8a00a533 in g_main_loop_run () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fdd1a15deda in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007fdd8a033931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fdd8a91c590 in start_thread (arg=0x7fdd05a4c640) at pthread_create.c:463
#9  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fdd0624d640 (LWP 67762)):
#0  0x00007fdd8bf0266f in __GI___poll (fds=0x563a7a9023e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdd8a00a1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8a00a331 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fdd8a033931 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fdd8a91c590 in start_thread (arg=0x7fdd0624d640) at pthread_create.c:463
#6  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fdd1b2f3640 (LWP 67758)):
#0  0x00007fdd8a057368 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fdd8a00a05d in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8c4cdfbb in QEventDispatcherGlib::processEvents (this=0x7fdcf8000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7fdd1b2f2cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fdd8c28ca12 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x563a7d6197e0) at thread/qthread_unix.cpp:329
#7  0x00007fdd8a91c590 in start_thread (arg=0x7fdd1b2f3640) at pthread_create.c:463
#8  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fdd1baf4640 (LWP 67757)):
#0  0x00007fdd8a009d78 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fdd8a00a240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8c4cdfbb in QEventDispatcherGlib::processEvents (this=0x7fdd00000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7fdd1baf3cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fdd8c28ca12 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x563a7d935eb0) at thread/qthread_unix.cpp:329
#7  0x00007fdd8a91c590 in start_thread (arg=0x7fdd1baf4640) at pthread_create.c:463
#8  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fdd7d015640 (LWP 67741)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563a7608d8c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563a7608d878, cond=0x563a7608d8a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563a7608d8a0, mutex=0x563a7608d878) at pthread_cond_wait.c:638
#3  0x00007fdd7ed2b62b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fdd7ed2b22b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fdd8a91c590 in start_thread (arg=0x7fdd7d015640) at pthread_create.c:463
#6  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fdd7d816640 (LWP 67740)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563a7608d8c8) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563a7608d878, cond=0x563a7608d8a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563a7608d8a0, mutex=0x563a7608d878) at pthread_cond_wait.c:638
#3  0x00007fdd7ed2b62b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fdd7ed2b22b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fdd8a91c590 in start_thread (arg=0x7fdd7d816640) at pthread_create.c:463
#6  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fdd7e017640 (LWP 67739)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563a7608d8cc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563a7608d878, cond=0x563a7608d8a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563a7608d8a0, mutex=0x563a7608d878) at pthread_cond_wait.c:638
#3  0x00007fdd7ed2b62b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fdd7ed2b22b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fdd8a91c590 in start_thread (arg=0x7fdd7e017640) at pthread_create.c:463
#6  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fdd7e818640 (LWP 67738)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563a7608d8cc) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563a7608d878, cond=0x563a7608d8a0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x563a7608d8a0, mutex=0x563a7608d878) at pthread_cond_wait.c:638
#3  0x00007fdd7ed2b62b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007fdd7ed2b22b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007fdd8a91c590 in start_thread (arg=0x7fdd7e818640) at pthread_create.c:463
#6  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fdd85d71640 (LWP 67737)):
#0  0x00007fdd8bf0266f in __GI___poll (fds=0x7fdd78012b00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fdd8a00a1ae in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdd8c4cdfbb in QEventDispatcherGlib::processEvents (this=0x7fdd78000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7fdd85d70c90, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007fdd8c28ca12 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007fdd8b0b5f4b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fdd8c28dbac in QThreadPrivate::start (arg=0x7fdd8b139d80) at thread/qthread_unix.cpp:329
#8  0x00007fdd8a91c590 in start_thread (arg=0x7fdd85d71640) at pthread_create.c:463
#9  0x00007fdd8bf0e223 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fdd87ba7840 (LWP 67734)):
[KCrash Handler]
#4  0x00007fdd8c49d9d8 in std::__atomic_base<QThreadData*>::load (__m=std::memory_order_relaxed, this=0x630053007200a7) at /usr/include/c++/9/bits/atomic_base.h:734
#5  std::atomic<QThreadData*>::load (__m=std::memory_order_relaxed, this=0x630053007200a7) at /usr/include/c++/9/atomic:519
#6  QAtomicOps<QThreadData*>::loadRelaxed<QThreadData*> (_q_value=...) at ../../include/QtCore/../../src/corelib/thread/qatomic_cxx11.h:239
#7  QBasicAtomicPointer<QThreadData>::loadRelaxed (this=0x630053007200a7) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:248
#8  QObject::thread (this=this@entry=0x563a7cdc0b20) at kernel/qobject.cpp:1487
#9  0x00007fdd8c4a45cd in QObject::killTimer (this=this@entry=0x563a7cdc0b20, id=256) at kernel/qobject.cpp:1795
#10 0x00007fdd8c4af479 in QTimer::stop (this=this@entry=0x563a7cdc0b20) at kernel/qtimer.cpp:243
#11 0x00007fdd8c4af4f3 in QTimer::start (this=0x563a7cdc0b20) at kernel/qtimer.cpp:211
#12 0x00007fdd52ff8f64 in KNSCore::Cache::registerChangedEntry (this=0x563a77dca1f0, entry=...) at ./src/core/cache.cpp:290
#13 0x00007fdd8c4aa6be in QtPrivate::QSlotObjectBase::call (a=0x7ffd91555ba0, r=0x563a77dca1f0, this=0x563a7b5aa810) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#14 doActivate<false> (sender=0x563a7aff3fa0, signal_index=9, argv=0x7ffd91555ba0) at kernel/qobject.cpp:3886
#15 0x00007fdd8c4a3a87 in QMetaObject::activate (sender=sender@entry=0x563a7aff3fa0, m=m@entry=0x7fdd530655c0 <KNSCore::Engine::staticMetaObject>, local_signal_index=local_signal_index@entry=6, argv=argv@entry=0x7ffd91555ba0) at kernel/qobject.cpp:3946
#16 0x00007fdd52fe9bb9 in KNSCore::Engine::signalEntryChanged (this=this@entry=0x563a7aff3fa0, _t1=...) at ./obj-x86_64-linux-gnu/src/core/KF5NewStuffCore_autogen/EWIEGA46WW/moc_engine.cpp:578
#17 0x00007fdd5300514e in KNSCore::Engine::install (this=this@entry=0x563a7aff3fa0, entry=..., linkId=linkId@entry=1) at ./src/core/engine.cpp:553
#18 0x00007fdd5307d0f1 in ItemsModel::installItem (this=0x563a769118b0, index=<optimized out>, linkId=1) at ./src/qtquick/quickitemsmodel.cpp:412
#19 0x00007fdd5307539a in ItemsModel::qt_static_metacall (_o=_o@entry=0x563a769118b0, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=3, _a=_a@entry=0x7ffd91555ea0) at ./obj-x86_64-linux-gnu/src/qtquick/newstuffqmlplugin_autogen/EWIEGA46WW/moc_quickitemsmodel.cpp:218
#20 0x00007fdd53076f73 in ItemsModel::qt_metacall (this=0x563a769118b0, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7ffd91555ea0) at ./obj-x86_64-linux-gnu/src/qtquick/newstuffqmlplugin_autogen/EWIEGA46WW/moc_quickitemsmodel.cpp:301
#21 0x00007fdd8b42dbe5 in QQmlObjectOrGadget::metacall (this=this@entry=0x7ffd915561e0, type=type@entry=QMetaObject::InvokeMetaMethod, index=<optimized out>, index@entry=58, argv=<optimized out>) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/ftw/qflagpointer_p.h:351
#22 0x00007fdd8b2f6675 in CallMethod (object=..., index=<optimized out>, returnType=returnType@entry=43, argCount=<optimized out>, argTypes=<optimized out>, engine=engine@entry=0x563a7d6a0890, callArgs=<optimized out>, callType=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:1301
#23 0x00007fdd8b2f8777 in CallPrecise (object=..., data=..., engine=engine@entry=0x563a7d6a0890, callArgs=callArgs@entry=0x7fdd722176a0, callType=callType@entry=QMetaObject::InvokeMetaMethod) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:285
#24 0x00007fdd8b2f966a in QV4::QObjectMethod::callInternal (this=<optimized out>, thisObject=<optimized out>, argv=<optimized out>, argc=2) at jsruntime/qv4qobjectwrapper.cpp:2131
#25 0x00007fdd8b3190f1 in QV4::FunctionObject::call (argc=<optimized out>, argv=<optimized out>, thisObject=<optimized out>, this=<optimized out>) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/jsruntime/qv4functionobject_p.h:172
#26 QV4::Moth::VME::interpret (frame=0x7ffd915564d0, engine=0x563a7d6a0890, code=0x7fdd72217648 " \214\027p\335\177") at jsruntime/qv4vme_moth.cpp:754
#27 0x00007fdd8b31b02f in QV4::Moth::VME::exec (frame=frame@entry=0x7ffd915564d0, engine=engine@entry=0x563a7d6a0890) at jsruntime/qv4vme_moth.cpp:463
#28 0x00007fdd8b2a824d in QV4::Function::call (this=this@entry=0x563a7b4ca650, thisObject=<optimized out>, argv=argv@entry=0x7fdd722175f8, argc=<optimized out>, context=<optimized out>) at jsruntime/qv4function.cpp:69
#29 0x00007fdd8b44dfa7 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x563a7b454c40, callData=callData@entry=0x7fdd722175c8, isUndefined=isUndefined@entry=0x0) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:343
#30 0x00007fdd8b3f18ae in QQmlBoundSignalExpression::evaluate (this=<optimized out>, a=<optimized out>) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/jsruntime/qv4jscall_p.h:95
#31 0x00007fdd8b3f2948 in QQmlBoundSignal_callback (e=0x563a7b454bf0, a=0x7ffd915581e0) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlboundsignalexpressionpointer_p.h:69
#32 0x00007fdd8b42d64d in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x7ffd915581e0) at qml/qqmlnotifier.cpp:104
#33 0x00007fdd8b3cffbf in QQmlData::signalEmitted (object=0x563a78fdab50, index=11, a=0x7ffd915581e0) at qml/qqmlengine.cpp:834
#34 0x00007fdd8c4aa245 in doActivate<false> (sender=0x563a78fdab50, signal_index=11, argv=0x7ffd915581e0) at kernel/qobject_p.h:110
#35 0x00007fdd8c4a3a87 in QMetaObject::activate (sender=sender@entry=0x563a78fdab50, m=m@entry=0x7fdd861fb280 <QQuickAction::staticMetaObject>, local_signal_index=local_signal_index@entry=8, argv=argv@entry=0x7ffd915581e0) at kernel/qobject.cpp:3946
#36 0x00007fdd8610fd16 in QQuickAction::triggered (this=this@entry=0x563a78fdab50, _t1=<optimized out>, _t1@entry=0x0) at .moc/moc_qquickaction_p.cpp:363
#37 0x00007fdd86110a16 in QQuickActionPrivate::trigger (this=0x563a796029d0, source=0x0, doToggle=<optimized out>) at qquickaction.cpp:559
#38 0x00007fdd86110ad2 in QQuickAction::trigger (this=<optimized out>, source=<optimized out>) at qquickaction.cpp:540
#39 0x00007fdd86110d12 in QQuickAction::qt_static_metacall (_o=_o@entry=0x563a78fdab50, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=_id@entry=13, _a=_a@entry=0x7ffd915585e0) at .moc/moc_qquickaction_p.cpp:153
#40 0x00007fdd861113f3 in QQuickAction::qt_metacall (this=0x563a78fdab50, _c=QMetaObject::InvokeMetaMethod, _id=13, _a=0x7ffd915585e0) at .moc/moc_qquickaction_p.cpp:283
#41 0x00007fdd8b3c9dc2 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at qml/qqmlvmemetaobject.cpp:1045
#42 0x00007fdd8b3c9d84 in QQmlVMEMetaObject::metaCall(QObject*, QMetaObject::Call, int, void**) () at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/ftw/qflagpointer_p.h:351
#43 0x00007fdd8b42dbe5 in QQmlObjectOrGadget::metacall (this=this@entry=0x7ffd915588d0, type=type@entry=QMetaObject::InvokeMetaMethod, index=<optimized out>, index@entry=18, argv=argv@entry=0x7ffd915585e0) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/ftw/qflagpointer_p.h:351
#44 0x00007fdd8b2f6a44 in CallMethod (object=..., index=18, returnType=returnType@entry=43, argCount=argCount@entry=0, argTypes=argTypes@entry=0x0, engine=engine@entry=0x563a7d6a0890, callArgs=0x7fdd72217580, callType=QMetaObject::InvokeMetaMethod) at jsruntime/qv4qobjectwrapper.cpp:1319
#45 0x00007fdd8b2f86b4 in CallPrecise (object=..., data=..., engine=engine@entry=0x563a7d6a0890, callArgs=callArgs@entry=0x7fdd72217580, callType=callType@entry=QMetaObject::InvokeMetaMethod) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlpropertydata_p.h:285
#46 0x00007fdd8b2f995f in CallOverloaded (callType=QMetaObject::InvokeMetaMethod, propertyCache=0x7fdd600617a0, callArgs=0x7fdd72217580, engine=0x563a7d6a0890, data=..., object=...) at jsruntime/qv4qobjectwrapper.cpp:1645
#47 QV4::QObjectMethod::callInternal (this=<optimized out>, thisObject=<optimized out>, argv=<optimized out>, argc=<optimized out>) at jsruntime/qv4qobjectwrapper.cpp:2133
#48 0x00007fdd8b3190f1 in QV4::FunctionObject::call (argc=<optimized out>, argv=<optimized out>, thisObject=<optimized out>, this=<optimized out>) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/jsruntime/qv4functionobject_p.h:172
#49 QV4::Moth::VME::interpret (frame=0x7ffd91558bc0, engine=0x563a7d6a0890, code=0x7fdd72217538 "`\250\064p\335\177") at jsruntime/qv4vme_moth.cpp:754
#50 0x00007fdd8b31b02f in QV4::Moth::VME::exec (frame=frame@entry=0x7ffd91558bc0, engine=engine@entry=0x563a7d6a0890) at jsruntime/qv4vme_moth.cpp:463
#51 0x00007fdd8b2a824d in QV4::Function::call (this=this@entry=0x563a76978840, thisObject=<optimized out>, argv=argv@entry=0x7fdd72217500, argc=<optimized out>, context=<optimized out>) at jsruntime/qv4function.cpp:69
#52 0x00007fdd8b44dfa7 in QQmlJavaScriptExpression::evaluate (this=this@entry=0x563a7b4d0740, callData=callData@entry=0x7fdd722174d0, isUndefined=isUndefined@entry=0x0) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:343
#53 0x00007fdd8b3f18ae in QQmlBoundSignalExpression::evaluate (this=<optimized out>, a=<optimized out>) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/jsruntime/qv4jscall_p.h:95
#54 0x00007fdd8b3f2948 in QQmlBoundSignal_callback (e=0x563a7b06a810, a=0x0) at ../../include/QtQml/5.15.2/QtQml/private/../../../../../src/qml/qml/qqmlboundsignalexpressionpointer_p.h:69
#55 0x00007fdd8b42d64d in QQmlNotifier::emitNotify (endpoint=<optimized out>, a=a@entry=0x0) at qml/qqmlnotifier.cpp:104
#56 0x00007fdd8b3cffbf in QQmlData::signalEmitted (object=0x563a7953b100, index=64, a=0x0) at qml/qqmlengine.cpp:834
#57 0x00007fdd8c4aa245 in doActivate<false> (sender=0x563a7953b100, signal_index=64, argv=0x0) at kernel/qobject_p.h:110
#58 0x00007fdd8610ea81 in QQuickAbstractButtonPrivate::handleRelease (this=0x563a7d575590, point=...) at qquickabstractbutton.cpp:182
#59 0x00007fdd8612db19 in QQuickControl::mouseReleaseEvent (this=<optimized out>, event=0x7ffd9155b1b0) at /usr/include/x86_64-linux-gnu/qt5/QtGui/qevent.h:128
#60 0x00007fdd8b8605a8 in QQuickItem::event (this=0x563a7953b100, ev=0x7ffd9155b1b0) at items/qquickitem.cpp:8131
#61 0x00007fdd8d06ddc3 in QApplicationPrivate::notify_helper (this=this@entry=0x563a75e18ab0, receiver=receiver@entry=0x563a7953b100, e=e@entry=0x7ffd9155b1b0) at kernel/qapplication.cpp:3632
#62 0x00007fdd8d076bb8 in QApplication::notify (this=0x7ffd9155b670, receiver=0x563a7953b100, e=0x7ffd9155b1b0) at kernel/qapplication.cpp:3156
#63 0x00007fdd8c47369a in QCoreApplication::notifyInternal2 (receiver=0x563a7953b100, event=0x7ffd9155b1b0) at ../../include/QtCore/5.15.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#64 0x00007fdd8b87a9e5 in QQuickWindowPrivate::deliverMouseEvent (this=this@entry=0x563a781c6440, pointerEvent=0x7fdd800204a0) at items/qquickwindow.cpp:2020
#65 0x00007fdd8b87c10f in QQuickWindowPrivate::deliverPointerEvent (this=this@entry=0x563a781c6440, event=0x7fdd800204a0) at items/qquickwindow.cpp:2612
#66 0x00007fdd8b87d039 in QQuickWindowPrivate::handleMouseEvent (event=0x7ffd9155b1b0, this=0x563a781c6440) at items/qquickwindow.cpp:2457
#67 QQuickWindowPrivate::handleMouseEvent (this=0x563a781c6440, event=0x7ffd9155b1b0) at items/qquickwindow.cpp:2410
#68 0x00007fdd8c983e1d in QWindow::event (this=this@entry=0x563a7ace5a80, ev=ev@entry=0x7ffd9155b1b0) at kernel/qwindow.cpp:2438
#69 0x00007fdd8b87eaab in QQuickWindow::event (this=0x563a7ace5a80, e=0x7ffd9155b1b0) at items/qquickwindow.cpp:1902
#70 0x00007fdd8d06ddc3 in QApplicationPrivate::notify_helper (this=this@entry=0x563a75e18ab0, receiver=receiver@entry=0x563a7ace5a80, e=e@entry=0x7ffd9155b1b0) at kernel/qapplication.cpp:3632
#71 0x00007fdd8d076bb8 in QApplication::notify (this=0x7ffd9155b670, receiver=0x563a7ace5a80, e=0x7ffd9155b1b0) at kernel/qapplication.cpp:3156
#72 0x00007fdd8c47369a in QCoreApplication::notifyInternal2 (receiver=0x563a7ace5a80, event=0x7ffd9155b1b0) at ../../include/QtCore/5.15.2/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#73 0x00007fdd8c9784e8 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at kernel/qguiapplication.cpp:2282
#74 0x00007fdd8c979b55 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x563a76d9ef00) at kernel/qguiapplication.cpp:2002
#75 0x00007fdd8c9517ac in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1169
#76 0x00007fdd87513d7e in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#77 0x00007fdd8a009fbd in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#78 0x00007fdd8a00a240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#79 0x00007fdd8a00a2e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#80 0x00007fdd8c4cdfa2 in QEventDispatcherGlib::processEvents (this=0x563a75ef8620, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#81 0x00007fdd8c4721ab in QEventLoop::exec (this=this@entry=0x7ffd9155b550, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#82 0x00007fdd8c47a354 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#83 0x0000563a74320112 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:209
[Inferior 1 (process 67734) detached]

Possible duplicates by query: bug 422533.

Reported using DrKonqi