Bug 415787

Summary: plasmashell / Wayland compositor crash when opening a certain web site in Firefox or Chromium
Product: [Plasma] plasmashell Reporter: Daniel Albers <daniel>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED WORKSFORME    
Severity: crash CC: herzenschein, plasma-bugs-null
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.17.4   
Target Milestone: 1.0   
Platform: Arch Linux   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Daniel Albers 2020-01-02 01:38:19 UTC 
Application: plasmashell (5.17.4)

Qt Version: 5.14.0
Frameworks Version: 5.65.0
Operating System: Linux 5.4.6-arch3-1 x86_64
Distribution: "Arch Linux"

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

Opened https://web.archive.org/web/20180104171638/http://nairobi-embedded.org/qemu_monitor_console.html#device_add-and-device_del in Chromium.

This is 100% reproducible.

The only odd thing I see here, is that the page has a 20 Kb long document.title, which ends up as the window title. If I manually set the document.title of another open tab to the same value, I don't get a crash, though.

Last moments of plasmashell with WAYLAND_DEBUG on:

[693197,369] org_kde_plasma_window@363.state_changed(241408)
[693197,489] org_kde_plasma_window@364.state_changed(241408)
[693198,388] org_kde_plasma_window@84.state_changed(241409)
[693198,497] org_kde_plasma_window@239.state_changed(241409)
[693201,087] wl_callback@300.done(8688)
[693201,240] wl_buffer@257.release()
[693203,908]  -> wl_surface@103.frame(new id wl_callback@255)
[693204,109]  -> wl_surface@103.attach(wl_buffer@257, 0, 0)
[693204,189]  -> wl_surface@103.damage(0, 0, 2147483647, 2147483647)
[693204,426]  -> wl_surface@103.commit()
[693204,460]  -> wl_display@1.sync(new id wl_callback@300)
[693205,049] wl_display@1.delete_id(300)
[693238,648] wl_display@1.delete_id(255)
[693238,690] wl_callback@255.done(1768811)
[693436,525] wl_callback@300.done(8693)
[693436,554] wl_buffer@267.release()
[693437,769]  -> wl_surface@103.frame(new id wl_callback@255)
[693437,842]  -> wl_surface@103.attach(wl_buffer@267, 0, 0)
[693437,863]  -> wl_surface@103.damage(0, 0, 2147483647, 2147483647)
[693437,948]  -> wl_surface@103.commit()
[693437,960]  -> wl_display@1.sync(new id wl_callback@300)
[693438,366] wl_display@1.delete_id(300)
[693447,914] wl_display@1.delete_id(255)
[693447,995] wl_callback@255.done(1769020)
[693452,461] wl_callback@376.done(8688)
[693452,509] wl_buffer@171.release()
[693453,195]  -> wl_surface@36.frame(new id wl_callback@284)
[693453,243]  -> wl_surface@36.attach(wl_buffer@171, 0, 0)
[693453,263]  -> wl_surface@36.damage(0, 0, 2147483647, 2147483647)
[693453,373]  -> wl_surface@36.commit()
[693453,396]  -> wl_display@1.sync(new id wl_callback@376)
[693453,676] wl_display@1.delete_id(376)
[693483,811] wl_display@1.delete_id(284)
[693483,864] wl_callback@284.done(1769056)
[693484,220] wl_callback@376.done(8694)
[693484,261] wl_buffer@170.release()
[693485,019]  -> wl_surface@36.frame(new id wl_callback@284)
[693485,110]  -> wl_surface@36.attach(wl_buffer@170, 0, 0)
[693485,150]  -> wl_surface@36.damage(0, 0, 2147483647, 2147483647)
[693487,442]  -> wl_surface@36.commit()
[693487,473]  -> wl_display@1.sync(new id wl_callback@376)
[693487,768] wl_display@1.delete_id(376)
[693532,894] wl_display@1.delete_id(284)
[693532,926] wl_callback@284.done(1769106)
[693532,951]  -> wl_surface@36.frame(new id wl_callback@284)
[693532,994] wl_callback@376.done(8694)
[693533,009] wl_buffer@171.release()
[693533,031]  -> zwp_linux_dmabuf_v1@38.create_params(new id zwp_linux_buffer_params_v1@376)
[693533,071]  -> zwp_linux_buffer_params_v1@376.add(fd 19, 0, 0, 20992, 16777216, 4)
[693533,118]  -> zwp_linux_buffer_params_v1@376.add(fd 26, 1, 62472192, 768, 16777216, 4)
[693533,157]  -> zwp_linux_buffer_params_v1@376.create_immed(new id wl_buffer@381, 5238, 2946, 875713089, 0)
[693533,198]  -> zwp_linux_buffer_params_v1@376.destroy()
[693533,209]  -> wl_surface@36.attach(wl_buffer@381, 0, 0)
[693533,234]  -> wl_surface@36.damage(0, 0, 2147483647, 2147483647)
[693533,318]  -> wl_surface@36.commit()
[693533,329]  -> wl_display@1.sync(new id wl_callback@382)
[693533,677] wl_display@1.delete_id(376)
[693533,725] wl_display@1.delete_id(382)
[4228:4228:0102/023208.485251:ERROR:gl_surface_presentation_helper.cc(259)] GetVSyncParametersIfAvailable() failed for 57856 times!
[693634,030]  -> wl_surface@36.frame(new id wl_callback@376)
[693634,087] wl_callback@382.done(8694)
[693634,099] wl_buffer@170.release()
[693634,106]  -> wl_surface@36.attach(wl_buffer@171, 0, 0)
[693634,135]  -> wl_surface@36.damage(0, 0, 2147483647, 2147483647)
[693634,287]  -> wl_surface@36.commit()
[693634,295]  -> wl_display@1.sync(new id wl_callback@382)
[693641,322] wl_display@1.delete_id(284)
[693641,665] wl_display@1.delete_id(382)
[693730,724] wl_display@1.delete_id(376)
[693730,778] wl_callback@376.done(1769303)
[693731,128] wl_callback@382.done(8694)
[693731,153] wl_buffer@381.release()
[693731,159]  -> wl_buffer@381.destroy()
[693731,681]  -> wl_surface@36.frame(new id wl_callback@376)
[693731,732]  -> wl_surface@36.attach(wl_buffer@170, 0, 0)
[693731,748]  -> wl_surface@36.damage(0, 0, 2147483647, 2147483647)
[693731,812]  -> wl_surface@36.commit()
[693731,820]  -> wl_display@1.sync(new id wl_callback@382)
[693732,274] wl_display@1.delete_id(381)
[693732,317] wl_display@1.delete_id(382)
[693825,793] wl_display@1.delete_id(376)
[693825,838] wl_callback@376.done(1769398)
[694438,293] wl_callback@300.done(8694)
[694438,339] wl_buffer@257.release()
[694439,297]  -> wl_surface@103.frame(new id wl_callback@255)
[694439,352]  -> wl_surface@103.attach(wl_buffer@257, 0, 0)
[694439,388]  -> wl_surface@103.damage(0, 0, 2147483647, 2147483647)
[694439,488]  -> wl_surface@103.commit()
[694439,503]  -> wl_display@1.sync(new id wl_callback@300)
The Wayland connection broke. Did the Wayland compositor die?
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = plasmashell path = /usr/bin pid = 7884
KCrash: Arguments: /usr/bin/plasmashell --replace -n
KCrash: Attempting to start /usr/lib/drkonqi from kdeinit

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdd4c037cc0 (LWP 7884))]

Thread 14 (Thread 0x7fdce2ffd700 (LWP 7934)):
#0  0x00007fdd4eb4d479 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fdd4eb9d019 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fdd508edcdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fdd506b9e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#7  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7fdce37fe700 (LWP 7926)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd506c0cc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fdd506c0da2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fdd5242c18b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fdd5242c41b in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7fdce3fff700 (LWP 7923)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd506c0cc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fdd506c0da2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fdd5242c18b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fdd5242c41b in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7fdcea397700 (LWP 7921)):
#0  0x00007fdd5032e42c in read () at /usr/lib/libc.so.6
#1  0x00007fdd4eb4d9f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fdd4eb9b9e1 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fdd4eb9d0c8 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fdd508edcdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fdd506b9e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7fdceffff700 (LWP 7920)):
#0  0x00007fdd4eb4d4f0 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007fdd4eb9b8ba in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#2  0x00007fdd4eb9d0c8 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007fdd508edcdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd506b9e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007fdd08cc017b in KCupsConnection::run() () at /usr/lib/libkcupslib.so
#8  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7fdd0a739700 (LWP 7917)):
#0  0x00007fdd5033e52c in recv () at /usr/lib/libc.so.6
#1  0x00007fdd4fd42f07 in  () at /usr/lib/libQt5Network.so.5
#2  0x00007fdd4fd33d84 in  () at /usr/lib/libQt5Network.so.5
#3  0x00007fdd4fd345c3 in QNetworkInterface::allInterfaces() () at /usr/lib/libQt5Network.so.5
#4  0x00007fdd182be52c in  () at /usr/lib/qt/plugins/bearer/libqgenericbearer.so
#5  0x00007fdd508a3e66 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd508a5af4 in QMetaObject::invokeMethod(QObject*, char const*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) () at /usr/lib/libQt5Core.so.5
#7  0x00007fdd4fd1e41b in QNetworkConfigurationManagerPrivate::performAsyncConfigurationUpdate() () at /usr/lib/libQt5Network.so.5
#8  0x00007fdd4fd1e65c in QNetworkConfigurationManagerPrivate::startPolling() () at /usr/lib/libQt5Network.so.5
#9  0x00007fdd4fd1ec7e in QNetworkConfigurationManagerPrivate::updateConfigurations() () at /usr/lib/libQt5Network.so.5
#10 0x00007fdd4fdb6e87 in  () at /usr/lib/libQt5Network.so.5
#11 0x00007fdd508c313a in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#12 0x00007fdd50895856 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#13 0x00007fdd50898096 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#14 0x00007fdd508ee674 in  () at /usr/lib/libQt5Core.so.5
#15 0x00007fdd4eb9b39e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#16 0x00007fdd4eb9d1b1 in  () at /usr/lib/libglib-2.0.so.0
#17 0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#18 0x00007fdd508edcc0 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#19 0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#20 0x00007fdd506b9e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#21 0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#22 0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#23 0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7fdd0af3a700 (LWP 7914)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd506c0cc4 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007fdd506c0da2 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007fdd5242c18b in  () at /usr/lib/libQt5Quick.so.5
#4  0x00007fdd5242c41b in  () at /usr/lib/libQt5Quick.so.5
#5  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7fdd4232f700 (LWP 7892)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd43828d0c in  () at /usr/lib/dri/i965_dri.so
#2  0x00007fdd43828908 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7fdd42b30700 (LWP 7891)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd43828d0c in  () at /usr/lib/dri/i965_dri.so
#2  0x00007fdd43828908 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7fdd43331700 (LWP 7890)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd43828d0c in  () at /usr/lib/dri/i965_dri.so
#2  0x00007fdd43828908 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7fdd48acd700 (LWP 7889)):
#0  0x00007fdd4fb01c45 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007fdd43828d0c in  () at /usr/lib/dri/i965_dri.so
#2  0x00007fdd43828908 in  () at /usr/lib/dri/i965_dri.so
#3  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7fdd4a410700 (LWP 7888)):
#0  0x00007fdd503329ef in poll () at /usr/lib/libc.so.6
#1  0x00007fdd4eb9d120 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007fdd508edcdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007fdd506b9e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd520c3249 in  () at /usr/lib/libQt5Qml.so.5
#7  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7fdd4b69b700 (LWP 7887)):
#0  0x00007fdd5032e42c in read () at /usr/lib/libc.so.6
#1  0x00007fdd4eb4d9f0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007fdd4eb9b9e1 in g_main_context_check () at /usr/lib/libglib-2.0.so.0
#3  0x00007fdd4eb9d0c8 in  () at /usr/lib/libglib-2.0.so.0
#4  0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#5  0x00007fdd508edcdc in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#7  0x00007fdd506b9e62 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#8  0x00007fdd51242b28 in  () at /usr/lib/libQt5DBus.so.5
#9  0x00007fdd506bafd6 in  () at /usr/lib/libQt5Core.so.5
#10 0x00007fdd4fafb4cf in start_thread () at /usr/lib/libpthread.so.0
#11 0x00007fdd5033d2d3 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7fdd4c037cc0 (LWP 7884)):
[KCrash Handler]
#6  0x00007fdd50279f25 in raise () at /usr/lib/libc.so.6
#7  0x00007fdd50263897 in abort () at /usr/lib/libc.so.6
#8  0x00007fdd5067f96c in  () at /usr/lib/libQt5Core.so.5
#9  0x00007fdd4bb926c3 in QtWaylandClient::QWaylandDisplay::checkError() const (this=0x55759f0eecb0) at /home/al/tmp/qt5-wayland/src/qtwayland-everywhere-src-5.14.0/src/client/qwaylanddisplay.cpp:196
#10 0x00007fdd4bb92760 in QtWaylandClient::QWaylandDisplay::flushRequests() (this=0x55759f0eecb0) at /home/al/tmp/qt5-wayland/src/qtwayland-everywhere-src-5.14.0/src/client/qwaylanddisplay.cpp:209
#11 0x00007fdd4bbc6d76 in QtWaylandClient::QWaylandDisplay::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x55759f0eecb0, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0x7ffc863e2660) at .moc/moc_qwaylanddisplay_p.cpp:77
#12 0x00007fdd508cb370 in  () at /usr/lib/libQt5Core.so.5
#13 0x00007fdd508ceb82 in QSocketNotifier::activated(int, QSocketNotifier::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#14 0x00007fdd508ceed2 in QSocketNotifier::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#15 0x00007fdd514b6472 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#16 0x00007fdd514bfc89 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007fdd50895832 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#18 0x00007fdd508ee8c6 in  () at /usr/lib/libQt5Core.so.5
#19 0x00007fdd4eb9b39e in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#20 0x00007fdd4eb9d1b1 in  () at /usr/lib/libglib-2.0.so.0
#21 0x00007fdd4eb9d1f1 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#22 0x00007fdd508edcc0 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#23 0x00007fdd5089439c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#24 0x00007fdd5089c3a6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#25 0x000055759e493dc9 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.17.4/shell/main.cpp:219
[Inferior 1 (process 7884) detached]

Possible duplicates by query: bug 415754, bug 415701, bug 415686, bug 415662, bug 415660.

Reported using DrKonqi
Comment 1 Thiago Sueto 2020-08-29 13:49:25 UTC 
This is a really unusual bug.
I cannot reproduce this with the current master branch.

Operating System: openSUSE Tumbleweed 20200823
KDE Plasma Version: 5.19.80
KDE Frameworks Version: 5.74.0
Qt Version: 5.15.0
Comment 2 Daniel Albers 2020-08-29 14:30:42 UTC 
I can't reproduce it anymore either. It seems that archive.org fixed the super large title as well, though.