Application: plasmashell (5.5.3)

Qt Version: 5.5.1
Operating System: Linux 4.2.0-23-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed: updating from the commandline: sudo apt update && sudo apt full-upgrade

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 0x7fe7fb2ff800 (LWP 21602))]

Thread 8 (Thread 0x7fe7e684f700 (LWP 21605)):
#0  0x00007fe7f59fe8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe7f9accbd2 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fe7f9ace74f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fe7e89987e9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fe7f60f4a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7f51e06aa in start_thread (arg=0x7fe7e684f700) at pthread_create.c:333
#6  0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fe7dffff700 (LWP 21607)):
#0  0x00007fe7f27d8869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe7f2793d76 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe7f2794250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe7f27942fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe7f632c50b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7f62d350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe7f60efac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7f899dc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fe7f60f4a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe7f51e06aa in start_thread (arg=0x7fe7dffff700) at pthread_create.c:333
#10 0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fe7d4ae5700 (LWP 21608)):
#0  0x00007fe7f59fe8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe7f27941ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe7f27942fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe7f632c50b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe7f62d350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7f60efac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe7f899dc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fe7f60f4a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe7f51e06aa in start_thread (arg=0x7fe7d4ae5700) at pthread_create.c:333
#9  0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fe7cec4b700 (LWP 21609)):
#0  0x00007fe7f59fe8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe7f27941ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe7f27942fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe7f632c50b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe7f62d350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7f60efac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe7f899dc35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fe7f60f4a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe7f51e06aa in start_thread (arg=0x7fe7cec4b700) at pthread_create.c:333
#9  0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fe7cd325700 (LWP 21610)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fe7fad46194 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fe7fad461d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fe7f51e06aa in start_thread (arg=0x7fe7cd325700) at pthread_create.c:333
#4  0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fe746816700 (LWP 21615)):
#0  0x00007fe7f59fe8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fe7f27941ec in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe7f27942fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe7f632c50b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe7f62d350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7f60efac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe7f93262a6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007fe7f60f4a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe7f51e06aa in start_thread (arg=0x7fe746816700) at pthread_create.c:333
#9  0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fe745815700 (LWP 21621)):
#0  0x00007fe7f27d8869 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe7f2793180 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe7f27940a5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe7f27942fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fe7f632c50b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe7f62d350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe7f60efac4 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe732d30817 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fe7f60f4a6e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fe7f51e06aa in start_thread (arg=0x7fe745815700) at pthread_create.c:333
#10 0x00007fe7f5a09eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fe7fb2ff800 (LWP 21602)):
[KCrash Handler]
#6  0x00007fe7f6205250 in QProcess::readChannel() const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe7f620aa86 in QProcess::readAllStandardError() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe7304894e9 in ApplicationNotifier::parseUpdateInfo (this=0x4c95410) at ../../../../libdiscover/backends/ApplicationBackend/ApplicationNotifier.cpp:125
#9  0x00007fe7f6304777 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe7f6203051 in QProcess::finished(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe7f620b9f8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe7f620bba9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fe7f63048ea in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007fe7f63841fe in QSocketNotifier::activated(int, QSocketNotifier::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007fe7f6310d9b in QSocketNotifier::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007fe7f6dda9dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007fe7f6ddfea6 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fe7f62d5d7b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007fe7f632c9bd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fe7f2793ff7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fe7f2794250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fe7f27942fc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fe7f632c4ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007fe7f62d350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007fe7f62db5ec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x000000000043258a in main (argc=4, argv=<optimized out>) at ../../shell/main.cpp:179

Reported using DrKonqi