Pasting the crashing thread from the backtrace for searchability:

Thread 1 (Thread 0x7ff310242540 (LWP 1345) "plasmashell"):
#0  0x00007ff3156d34d4 in QColor::operator=(QColor const&) () at /usr/lib/libQt5Gui.so.5
#1  0x00007ff314a64b74 in KIconColors::KIconColors(QPalette const&) () at /usr/lib/libKF5IconThemes.so.5
#2  0x00007ff314a64f46 in KIconColors::KIconColors() () at /usr/lib/libKF5IconThemes.so.5
#3  0x00007ff314a65116 in KIconEngine::KIconEngine(QString const&, KIconLoader*) () at /usr/lib/libKF5IconThemes.so.5
#4  0x00007ff30404bbef in  () at /usr/lib/qt/plugins/plasma/applets/org.kde.plasma.private.systemtray.so
#5  0x00007ff31517e463 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007ff315aab784 in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () at /usr/lib/libQt5DBus.so.5
#7  0x00007ff3151717d6 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#8  0x00007ff315da32c6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#9  0x00007ff31514d5aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#10 0x00007ff31514e0a9 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#11 0x00007ff315195678 in  () at /usr/lib/libQt5Core.so.5
#12 0x00007ff313534163 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#13 0x00007ff31358a9e9 in  () at /usr/lib/libglib-2.0.so.0
#14 0x00007ff3135316c5 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#15 0x00007ff31519957a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#16 0x00007ff31514588b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#17 0x00007ff315150fd7 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#18 0x000055ee36aa5f81 in  ()
#19 0x00007ff314abe310 in __libc_start_call_main () at /usr/lib/libc.so.6
#20 0x00007ff314abe3c1 in __libc_start_main_impl () at /usr/lib/libc.so.6
#21 0x000055ee36aa6335 in  ()

Unfortunately the backtrace is incomplete and missing debug symbols for the following lines that we need to figure out exactly what's going wrong:

> #4  0x00007ff30404bbef in  () at /usr/lib/qt/plugins/plasma/applets/org.kde.plasma.private.systemtray.so

Could you please install debug symbols for Plasma and the kiconthemes framework, reproduce the crash, and attach a new symbolicated backtrace? See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports

Thanks!

(In reply to Nate Graham from comment #2)
> Unfortunately the backtrace is incomplete and missing debug symbols for the
> following lines that we need to figure out exactly what's going wrong:
> 
> > #4  0x00007ff30404bbef in  () at /usr/lib/qt/plugins/plasma/applets/org.kde.plasma.private.systemtray.so
> 
> Could you please install debug symbols for Plasma and the kiconthemes
> framework, reproduce the crash, and attach a new symbolicated backtrace? See
> https://community.kde.org/Guidelines_and_HOWTOs/Debugging/
> How_to_create_useful_crash_reports
> 
> Thanks!

(This is my first time reporting a bug with a backtrace, please be patient)

After installing `debuginfod`, I restarted and got another crash. This time is not the same error I think.
This is the backtrace (from gdb I run `bt full`):

```
Core was generated by `/usr/bin/plasmashell'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f110f49534c in __pthread_kill_implementation () from /usr/lib/libc.so.6
[Current thread is 1 (Thread 0x7f110abb7540 (LWP 46271))]
(gdb)
(gdb) c
The program is not being run.
(gdb) bt full
#0  0x00007f110f49534c in __pthread_kill_implementation () at /usr/lib/libc.so.6
#1  0x00007f110f4484b8 in raise () at /usr/lib/libc.so.6
#2  0x00007f11117aa384 in KCrash::defaultCrashHandler(int) (sig=11) at /usr/src/debug/kcrash-5.93.0/src/kcrash.cpp:609
        data =
          {<KCrash::MetadataWriter> = {_vptr.MetadataWriter = 0x7f11117ad8b8 <vtable for KCrash::Metadata+16>}, argv = {_M_elems = {0x0, 0x7f11117ab0c1 "--platform", 0x55d477e95b98 "wayland", 0x7f11117ab0de "--appname", 0x55d475b896f0 "plasmashell", 0x7f11117ab0f7 "--apppath", 0x55d475b89630 "/usr/bin", 0x7f11117ab104 "--signal", 0x7fffdb1715e6 "11", 0x7f11117ab112 "--pid", 0x7fffdb1715f0 "46271", 0x7f11117ab118 "--appversion", 0x55d4760df478 "5.24.5", 0x7f11117ab125 "--programname", 0x55d4760a76e8 "Plasma", 0x7f11117ab133 "--bugaddress", 0x55d4760a81b8 "submit@bugs.kde.org", 0x7f11117ab14e "--startupid", 0x55d4796a4798 "0", 0x7f11117ab162 "--restarted", 0x0 <repeats 11 times>}}, argc = 20, m_writer = 0x7fffdb171720}
        platformName = {d = 0x55d477e95b80}
        about = <optimized out>
        argv = 0x7fffdb171618
        ini =
            {<KCrash::MetadataWriter> = {_vptr.MetadataWriter = 0x7f11117ad8e8 <vtable for KCrash::MetadataINIWriter+16>}, writable = false, fd = 95, iniLine = {_M_elems = "restarted=true\n\000t@bugs.kde.org\n", '\000' <repeats 992 times>}}
        sigtxt = "11\000\000\000\000\000\000\000"
        pidtxt = "46271\000\000\000\000\000\000\000\000\000\360?\000\000\000"
        startupId = {d = 0x55d4796a4780}
        argc = <optimized out>
        crashRecursionCounter = 2
#3  0x00007f110f448560 in <signal handler called> () at /usr/lib/libc.so.6
#4  0x00007f11100484d4 in QColor::operator=(QColor const&) () at /usr/lib/libQt5Gui.so.5
#5  0x00007f110f3d9b74 in KIconColors::KIconColors(QPalette const&) (this=<optimized out>, palette=..., this=<optimized out>, palette=<optimized out>) at /usr/src/debug/kiconthemes-5.93.0/src/kiconcolors.cpp:101
        d = 0x55d47984d9c0
#6  0x00007f110f3e954b in KIconLoader::setCustomPalette(QPalette const&) (this=0x7f110f3ff0d0 <(anonymous namespace)::Q_QGS_globalIconLoader::innerFunction()::holder>, palette=...)
    at /usr/src/debug/kiconthemes-5.93.0/src/kiconloader.cpp:1834
#7  0x00007f10cc6da27e in QIconSource::pixmap(QSize const&) (this=0x55d477be87c0, size=...) at /usr/src/debug/plasma-framework-5.93.0/src/declarativeimports/core/iconitem.cpp:96
        result = <incomplete type>
#8  0x00007f10cc6dff5e in IconItem::loadPixmap() (this=0x55d47700dd50) at /usr/src/debug/plasma-framework-5.93.0/src/declarativeimports/core/iconitem.cpp:713
        size = -619240880
        result = <incomplete type>
        animated = <optimized out>
#9  0x00007f11113c606d in QQuickWindowPrivate::polishItems() (this=0x7f10fc001d20) at /usr/src/debug/qtdeclarative/src/quick/items/qquickwindow.cpp:393
        item = 0x55d47700dd50
        itemPrivate = <optimized out>
        itemsRemaining = 1
        polishLoopDetector = {itemsToPolish = <optimized out>, numPolishLoopsInSequence = 0}
#10 0x00007f111137f463 in QSGThreadedRenderLoop::polishAndSync(QSGThreadedRenderLoop::Window*, bool) (this=0x55d476866ab0, w=0x55d477118360, inExpose=<optimized out>)
    at /usr/src/debug/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:1577
        window = 0x55d476d77ca0
        timer = {t1 = -9223372036854775808, t2 = -9223372036854775808}
        polishTime = 0
        waitTime = 0
        syncTime = 0
        profileFrames = false
        d = <optimized out>
#11 0x00007f11113d1784 in QQuickWindow::event(QEvent*) (this=0x55d476d77ca0, e=0x7fffdb1725c0) at /usr/src/debug/qtdeclarative/src/quick/items/qquickwindow.cpp:1857
        d = 0x7f10fc001d20
#12 0x00007f11107182c6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f110fac25aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55d476d77ca0, event=0x7fffdb1725c0) at kernel/qcoreapplication.cpp:1064
        selfRequired = true
        result = false
        cbdata = {0x55d476d77ca0, 0x7fffdb1725c0, 0x7fffdb17256f}
        d = <optimized out>
        threadData = 0x55d475ba8f00
        scopeLevelCounter = {threadData = 0x55d475ba8f00}
#14 0x00007f110fe8c971 in QPlatformWindow::deliverUpdateRequest() () at /usr/lib/libQt5Gui.so.5
#15 0x00007f110fae67d6 in QObject::event(QEvent*) (this=<optimized out>, e=0x7f10fc022d30) at kernel/qobject.cpp:1314
        mce = 0x7f10fc022d30
        sender = {previous = 0x0, receiver = 0x55d47707a2d0, sender = 0x0, signal = -1}
#16 0x00007f11107182c6 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f110fac25aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55d47707a2d0, event=0x7f10fc022d30) at kernel/qcoreapplication.cpp:1064
        selfRequired = true
        result = false
        cbdata = {0x55d47707a2d0, 0x7f10fc022d30, 0x7fffdb1726ff}
        d = <optimized out>
        threadData = 0x55d475ba8f00
        scopeLevelCounter = {threadData = 0x55d475ba8f00}
#18 0x00007f110fac30a9 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x55d475ba8f00) at kernel/qcoreapplication.cpp:1821
        e = 0x7f10fc022d30
        pe = <optimized out>
        r = <optimized out>
        relocker = {m_func = {__locker = @0x7fffdb172780}, m_invoke = true}
        event_deleter = {d = 0x7f10fc022d30}
        locker = {_M_device = 0x55d475ba8f30, _M_owns = false}
        startOffset = 0
        i = @0x55d475ba8f24: 1
        cleanup = {receiver = 0x0, event_type = 0, data = 0x55d475ba8f00, exceptionCaught = true}
#19 0x00007f110fb0a678 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55d475bce0f0) at kernel/qeventdispatcher_glib.cpp:277
        source = 0x55d475bce0f0
#20 0x00007f110dea9163 in g_main_dispatch (context=0x55d475bcc7c0) at ../glib/glib/gmain.c:3417
        dispatch = 0x7f110fb0a660 <postEventSourceDispatch(GSource*, GSourceFunc, gpointer)>
        prev_source = 0x0
        begin_time_nsec = 20890186283411
        was_in_call = <optimized out>
        user_data = 0x0
        callback = 0x0
        cb_funcs = 0x0
        cb_data = 0x0
        need_destroy = <optimized out>
        source = 0x55d475bce0f0
        current = 0x55d476238760
        i = 0
#21 g_main_context_dispatch (context=0x55d475bcc7c0) at ../glib/glib/gmain.c:4135
#22 0x00007f110deff9e9 in g_main_context_iterate.constprop.0 (context=context@entry=0x55d475bcc7c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4211
        max_priority = 2147483647
        timeout = 15
        some_ready = 1
        nfds = 9
        allocated_nfds = 13
        fds = 0x55d4766377c0
        begin_time_nsec = 20890184761762
#23 0x00007f110dea66c5 in g_main_context_iteration (context=0x55d475bcc7c0, may_block=1) at ../glib/glib/gmain.c:4276
        retval = <optimized out>
#24 0x00007f110fb0e57a in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55d475b85bb0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x55d475bcee10
        canWait = <optimized out>
        savedFlags = {i = 0}
        result = <optimized out>
#25 0x00007f110faba88b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fffdb172a40, flags=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69
        d = 0x55d4762386c0
        threadData = <optimized out>
        locker = {val = 94370996588504}
        app = <optimized out>
#26 0x00007f110fac5fd7 in QCoreApplication::exec() () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
        threadData = 0x55d475ba8f00
        eventLoop =
              {<QObject> = {_vptr.QObject = 0x7f110fd47710 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7f110fba9940 <_ZL26qt_meta_stringdata_QObject.lto_priv.0>, data = 0x7f110fba9820 <_ZL20qt_meta_data_QObject.lto_priv.0>, static_metacall = 0x7f110faf3740 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d4762386c0}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7f110fbd05c0 <_ZL21qt_meta_stringdata_Qt.lto_priv.0>, data = 0x7f110fbcd740 <_ZL15qt_meta_data_Qt.lto_priv.0>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7f110fd40520 <QObject::staticMetaObject>}, stringdata = 0x7f110fba5300 <_ZL29qt_meta_stringdata_QEventLoop.lto_priv.0>, data = 0x7f110fba52a0 <_ZL23qt_meta_data_QEventLoop.lto_priv.0>, static_metacall = 0x7f110fab95b0 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#27 0x000055d475995f81 in main(int, char**) (argc=<optimized out>, argv=0x7fffdb172be0) at /usr/src/debug/plasma-workspace-5.24.5/shell/main.cpp:238
        qpaVariable = <optimized out>
        app = <incomplete type>
        aboutData = Python Exception <class 'gdb.error'>: Request for member '_M_head_impl' is ambiguous in type 'std::tuple<KAboutDataPrivate*, std::default_delete<KAboutDataPrivate> >'. Candidates are:
  'std::default_delete<KAboutDataPrivate> std::_Head_base<1, std::default_delete<KAboutDataPrivate>, true>::_M_head_impl' (std::tuple<KAboutDataPrivate*, std::default_delete<KAboutDataPrivate> > -> std::_Tuple_impl<0, KAboutDataPrivate*, std::default_delete<KAboutDataPrivate> > -> std::_Tuple_impl<1, std::default_delete<KAboutDataPrivate> > -> std::_Head_base<1, std::default_delete<KAboutDataPrivate>, true>)
  '<unnamed type> std::_Head_base<0, KAboutDataPrivate*, false>::_M_head_impl' (std::tuple<KAboutDataPrivate*, std::default_delete<KAboutDataPrivate> > -> std::_Tuple_impl<0, KAboutDataPrivate*, std::default_delete<KAboutDataPrivate> > -> std::_Head_base<0, KAboutDataPrivate*, false>)

                  {d = {_M_t = {<std::__uniq_ptr_impl<KAboutDataPrivate, std::default_delete<KAboutDataPrivate> >> = {_M_t = std::tuple containing = {[1] = 0x55d476073080, [2] = {<No data fields>}}}, <No data fields>}}}
        replace = <optimized out>
        corona = <optimized out>
        service = Python Exception <class 'gdb.error'>: Request for member '_M_head_impl' is ambiguous in type 'std::tuple<KDBusServicePrivate*, std::default_delete<KDBusServicePrivate> >'. Candidates are:
  'std::default_delete<KDBusServicePrivate> std::_Head_base<1, std::default_delete<KDBusServicePrivate>, true>::_M_head_impl' (std::tuple<KDBusServicePrivate*, std::default_delete<KDBusServicePrivate> > -> std::_Tuple_impl<0, KDBusServicePrivate*, std::default_delete<KDBusServicePrivate> > -> std::_Tuple_impl<1, std::default_delete<KDBusServicePrivate> > -> std::_Head_base<1, std::default_delete<KDBusServicePrivate>, true>)
  '<unnamed type> std::_Head_base<0, KDBusServicePrivate*, false>::_M_head_impl' (std::tuple<KDBusServicePrivate*, std::default_delete<KDBusServicePrivate> > -> std::_Tuple_impl<0, KDBusServicePrivate*, std::default_delete<KDBusServicePrivate> > -> std::_Head_base<0, KDBusServicePrivate*, false>)

                  {<QObject> = {_vptr.QObject = 0x7f11110f2310 <vtable for KDBusService+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7f110fba9940 <_ZL26qt_meta_stringdata_QObject.lto_priv.0>, data = 0x7f110fba9820 <_ZL20qt_meta_data_QObject.lto_priv.0>, static_metacall = 0x7f110faf3740 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d475f63a20}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7f110fbd05c0 <_ZL21qt_meta_stringdata_Qt.lto_priv.0>, data = 0x7f110fbcd740 <_ZL15qt_meta_data_Qt.lto_priv.0>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7f110fd40520 <QObject::staticMetaObject>}, stringdata = 0x7f11110ed700 <qt_meta_stringdata_KDBusService>, data = 0x7f11110ec6e0 <qt_meta_data_KDBusService>, static_metacall = 0x7f11110e31f0 <KDBusService::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d = {_M_t = {<std::__uniq_ptr_impl<KDBusServicePrivate, std::default_delete<KDBusServicePrivate> >> = {_M_t = std::tuple containing = {[1] = 0x55d4760df3b0, [2] = {<No data fields>}}, <No data fields>}}}
```

Thanks! Looks samey.

What icon theme are you using? If it's not "Breeze Icons", does the crash happen if you switch to "Breeze Icons"?

(In reply to Nate Graham from comment #4)
> Thanks! Looks samey.
> 
> What icon theme are you using? If it's not "Breeze Icons", does the crash
> happen if you switch to "Breeze Icons"?

Indeed I'm using Relax-Dark-Icons (https://store.kde.org/p/1687609), I will switch to Breeze Dark and comment if/when a crash occurs

Thanks!

(In reply to Nate Graham from comment #4)
> If it's not "Breeze Icons", does the crash happen if you switch to "Breeze Icons"?

I have tried it and it does not crash... In fact it does not crash anymore(?)

It's hard to say because I don't know *what* made it crash, so I just used it normally and after 3 days it has not crashed once (with "Breeze Icons" nor with the custom ones). I do update my computer regularly, so it might have fixed itself I guess?

Anyhow, sorry for making you lose your time. Will add more info to this thread if I happen to find out what crashed plasma or it crashes even with "Breeze Icons".

Thank you again!

Thanks!