Application: plasmashell (5.12.3)

Qt Version: 5.9.3
Frameworks Version: 5.44.0
Operating System: Linux 4.13.0-37-generic x86_64
Distribution: KDE neon LTS User Edition 5.12

-- Information about the crash:
- Unusual behavior I noticed: plasmashell crash after 2018-03-15 update

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6a4365e900 (LWP 6518))]

Thread 14 (Thread 0x7f695a1b1700 (LWP 6534)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a3d42265b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a41195ebd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f6a411967b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f695a1b1700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f695adfd700 (LWP 6533)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a3d42265b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a41195ebd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f6a411967b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f695adfd700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f695b7fe700 (LWP 6532)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a3d42265b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a41195ebd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f6a411967b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f695b7fe700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f695bfff700 (LWP 6531)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a3d42265b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a41195ebd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f6a411967b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f695bfff700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f6963e3d700 (LWP 6529)):
#0  0x00007f6a3cd2474d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6a37b1338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6a37b1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6a3d64b6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6a3d5f3e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3d41c8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f696631b517 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6a3c2c86ba in start_thread (arg=0x7f6963e3d700) at pthread_create.c:333
#9  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f697d02a700 (LWP 6526)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a3d42265b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a41195ebd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f6a411967b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f697d02a700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f6984ba7700 (LWP 6525)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a3d42265b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a41195ebd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#3  0x00007f6a411967b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f6984ba7700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f698637c700 (LWP 6524)):
#0  0x00007f6a3cd2474d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6a37b1338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6a37b1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6a3d64b6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6a3d5f3e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3d41c8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6a41116046 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6a3c2c86ba in start_thread (arg=0x7f698637c700) at pthread_create.c:333
#9  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f6a175bb700 (LWP 6523)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f6a42dd3d04 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f6a42dd3d49 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f6a3c2c86ba in start_thread (arg=0x7f6a175bb700) at pthread_create.c:333
#4  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f6a21d8e700 (LWP 6522)):
#0  0x00007f6a3cd2474d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6a37b1338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6a37b1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6a3d64b6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6a3d5f3e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3d41c8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6a40575d25 in QQmlThreadPrivate::run (this=0x1a00a00) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6a3c2c86ba in start_thread (arg=0x7f6a21d8e700) at pthread_create.c:333
#9  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f6a23dfa700 (LWP 6521)):
#0  0x00007f6a3cd2474d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6a37b1338c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6a37b1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6a3d64b6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6a3d5f3e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3d41c8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f6a40575d25 in QQmlThreadPrivate::run (this=0x190ab60) at qml/ftw/qqmlthread.cpp:147
#7  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f6a3c2c86ba in start_thread (arg=0x7f6a23dfa700) at pthread_create.c:333
#9  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f6a299e0700 (LWP 6520)):
#0  0x00007f6a3cd3e86f in __GI___clock_gettime (clock_id=1, tp=0x7f6a299df9f0) at ../sysdeps/unix/clock_gettime.c:115
#1  0x00007f6a3d64afd1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f6a3d6497c9 in QTimerInfoList::updateCurrentTime() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f6a3d649d35 in QTimerInfoList::timerWait(timespec&) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f6a3d64b43e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a37b1291d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f6a37b132bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f6a37b1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f6a3d64b6cb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f6a3d5f3e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f6a3d41c8f4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f6a3daca315 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#12 0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f6a3c2c86ba in start_thread (arg=0x7f6a299e0700) at pthread_create.c:333
#14 0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f6a2bf5c700 (LWP 6519)):
#0  0x00007f6a3cd2474d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f6a41d1bc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f6a41d1d8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6a2e6d31f9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f6a3d421709 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f6a3c2c86ba in start_thread (arg=0x7f6a2bf5c700) at pthread_create.c:333
#6  0x00007f6a3cd3041d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f6a4365e900 (LWP 6518)):
[KCrash Handler]
#6  0x00007f696f64987b in DaysModel::update (this=0x4996600) at /workspace/build/src/declarativeimports/calendar/daysmodel.cpp:98
#7  0x00007f696f655ed5 in DaysModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/src/declarativeimports/calendar/moc_daysmodel.cpp:112
#8  0x00007f6a3d6232b9 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f6a3e5dfb9c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f6a3e5e75a7 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f6a3d5f5df8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f6a3d5f85db in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f6a3d64c0a3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f6a37b13197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#15 0x00007f6a37b133f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#16 0x00007f6a37b1349c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f6a3d64b6af in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f6a3d5f3e2a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f6a3d5fcd64 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x000000000041cd99 in main (argc=3, argv=<optimized out>) at /workspace/build/shell/main.cpp:166

Reported using DrKonqi