Application: plasmashell (5.2.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-21-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
Reading a PDF in Okular and after closing the application by ALT+F4

- Unusual behavior I noticed:
none

- Custom settings of the application:
After opening a PDF directly from Firefox, reading the document in PDF,  Plasma crashes when closing Okular.

The crash can be reproduced sometimes.

-- 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 0x7f49557cf7c0 (LWP 14302))]

Thread 27 (Thread 0x7f4941510700 (LWP 14304)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4952af3b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4952af564f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4943857099 in QXcbEventReader::run (this=0x15f38c0) at qxcbconnection.cpp:1105
#4  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x15f38c0) at thread/qthread_unix.cpp:337
#5  0x00007f494fe0d6aa in start_thread (arg=0x7f4941510700) at pthread_create.c:333
#6  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7f493b1dc700 (LWP 14306)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f493b1dbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x16c5980) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f493b1dc700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7f492fd85700 (LWP 14309)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f492fd84de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x1fb7140) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f492fd85700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7f492d619700 (LWP 14313)):
#0  0x00007f494cc8ff29 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc927ef in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f492d618de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2168b80) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f492d619700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7f491fbd7700 (LWP 14314)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f491fbd6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2242650) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f491fbd7700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7f491ebd6700 (LWP 14315)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f491ebd5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x233ca20) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f491ebd6700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7f491daf5700 (LWP 14316)):
#0  0x00007f494ccd7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc92409 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f491daf4de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x242c450) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f491daf5700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7f491c9f4700 (LWP 14317)):
#0  0x00007f494cc91f77 in g_main_context_release () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc92e76 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f491c9f3de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2552ec0) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f491c9f4700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7f490f7ff700 (LWP 14318)):
#0  0x00007f494ccd77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc923f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f490f7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2622730) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f490f7ff700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f490e7ee700 (LWP 14319)):
#0  0x00007f494ccd7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc928cc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f490e7edde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x273c6c0) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f490e7ee700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f490d6ed700 (LWP 14320)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f49000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f490d6ecde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x27f8310) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f490d6ed700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f48fbfff700 (LWP 14321)):
#0  0x00007f494cc929fc in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc92f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f48fbffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x28ef750) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f48fbfff700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f48faffe700 (LWP 14322)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4954911644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f4954911689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f494fe0d6aa in start_thread (arg=0x7f48faffe700) at pthread_create.c:333
#4  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f48fa7fd700 (LWP 14323)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f486c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f48fa7fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x29e59e0) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f48fa7fd700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f48f90c8700 (LWP 14324)):
#0  0x00007f494ccb9e09 in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc92fbd in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48700008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f48f90c7de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2be1ef0) at thread/qthread_unix.cpp:337
#7  0x00007f494fe0d6aa in start_thread (arg=0x7f48f90c8700) at pthread_create.c:333
#8  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f486af49700 (LWP 14326)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f485c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f486af48d90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f495547ab56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2cf6290) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f486af49700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f486b74a700 (LWP 14328)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48640096e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f486b749de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x2ce2e90) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f486b74a700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f486166b700 (LWP 14329)):
#0  0x00007f49505868dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f494cc92ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f486166ade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x48ec1a0) at thread/qthread_unix.cpp:337
#8  0x00007f494fe0d6aa in start_thread (arg=0x7f486166b700) at pthread_create.c:333
#9  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f4857fff700 (LWP 14330)):
#0  0x00007f494ccd77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc923f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f4857ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x49af600) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f4857fff700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f4856ffe700 (LWP 14331)):
#0  0x00007f494ccd77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc923f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48480008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f4856ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x4a9da20) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f4856ffe700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f4855ffd700 (LWP 14332)):
#0  0x00007f494ccd77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc923f0 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f484c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f4855ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x4b955e0) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f4855ffd700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f4854ffc700 (LWP 14333)):
#0  0x00007f494cc92d64 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#3  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f4854ffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#4  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#5  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x4ca5e70) at thread/qthread_unix.cpp:337
#7  0x00007f494fe0d6aa in start_thread (arg=0x7f4854ffc700) at pthread_create.c:333
#8  0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f48477ff700 (LWP 14334)):
#0  0x00007f494ccd7789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc928cc in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f483c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f48477fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x4d9b9e0) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f48477ff700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f48467fe700 (LWP 14335)):
#0  0x00007f494ccd77a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f494cc92a2a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48340008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f48467fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x4eac650) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f48467fe700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f48394bb700 (LWP 14337)):
#0  end (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:96
#1  constEnd (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:282
#2  QTimerInfoList::timerWait (this=0x7f4830002ad0, tm=...) at kernel/qtimerinfo_unix.cpp:384
#3  0x00007f4950e9e03e in timerSourcePrepareHelper (timeout=0x7f48394babf4, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#4  timerSourcePrepare (source=<optimized out>, timeout=0x7f48394babf4) at kernel/qeventdispatcher_glib.cpp:160
#5  0x00007f494cc923fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#9  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f48394badc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#11 0x00007f483b767cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#12 0x00007f4950c07b0e in QThreadPrivate::start (arg=0x53d2520) at thread/qthread_unix.cpp:337
#13 0x00007f494fe0d6aa in start_thread (arg=0x7f48394bb700) at pthread_create.c:333
#14 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f482ffff700 (LWP 14338)):
#0  socketNotifierSourcePrepare (timeout=0x7f482fffec14) at kernel/qeventdispatcher_glib.cpp:64
#1  0x00007f494cc923fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f494cc92de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f4950e9ec6c in QEventDispatcherGlib::processEvents (this=0x7f48280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7f482fffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f4950c02b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f4952990f65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f4950c07b0e in QThreadPrivate::start (arg=0x541eca0) at thread/qthread_unix.cpp:337
#9  0x00007f494fe0d6aa in start_thread (arg=0x7f482ffff700) at pthread_create.c:333
#10 0x00007f4950591eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f49557cf7c0 (LWP 14302)):
[KCrash Handler]
#6  0x00007f4950e77075 in QMetaObject::activate (sender=0x56867d0, signal_index=6, argv=0x0) at kernel/qobject.cpp:3762
#7  0x00007f4952769d12 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f49529d7148 in QQmlDelegateModel::_q_itemsChanged(int, int, QVector<int> const&) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f49529dcc61 in QQmlDelegateModel::_q_layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f49529fecff in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f49529ff40f in QQmlDelegateModel::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f4950e76ae2 in QMetaObject::activate (sender=sender@entry=0x457f830, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffea374e010) at kernel/qobject.cpp:3731
#13 0x00007f4950e77057 in QMetaObject::activate (sender=sender@entry=0x457f830, m=m@entry=0x7f495109fa40 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffea374e010) at kernel/qobject.cpp:3582
#14 0x00007f4950ef4226 in QAbstractItemModel::layoutChanged (this=this@entry=0x457f830, _t1=..., _t2=_t2@entry=QAbstractItemModel::VerticalSortHint) at .moc/moc_qabstractitemmodel.cpp:407
#15 0x00007f4950e167e5 in QSortFilterProxyModelPrivate::_q_sourceDataChanged (this=<optimized out>, source_top_left=..., source_bottom_right=...) at itemmodels/qsortfilterproxymodel.cpp:1205
#16 0x00007f4950e769c9 in QMetaObject::activate (sender=0x4595c40, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea374e2f0) at kernel/qobject.cpp:3716
#17 0x00007f4950e77057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f495109fa40 <QAbstractItemModel::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea374e2f0) at kernel/qobject.cpp:3582
#18 0x00007f4950ef413c in QAbstractItemModel::dataChanged (this=<optimized out>, _t1=..., _t2=..., _t3=...) at .moc/moc_qabstractitemmodel.cpp:393
#19 0x00007f48635d9653 in TaskManager::TasksModelPrivate::itemChanged (this=0x4594c50, changes=...) at ../../libtaskmanager/tasksmodel.cpp:515
#20 0x00007f48635da067 in TaskManager::TasksModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x7ffea374e4e0) at ./moc_tasksmodel.cpp:213
#21 0x00007f4950e769c9 in QMetaObject::activate (sender=0x543bcb0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea374e4e0) at kernel/qobject.cpp:3716
#22 0x00007f4950e77057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f48637fe9e0 <TaskManager::AbstractGroupableItem::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea374e4e0) at kernel/qobject.cpp:3582
#23 0x00007f48635e2028 in TaskManager::AbstractGroupableItem::changed (this=<optimized out>, _t1=...) at moc_abstractgroupableitem.cpp:222
#24 0x00007f48635e345b in TaskManager::AbstractGroupableItem::qt_static_metacall (_o=0x56867d0, _c=QMetaObject::QueryPropertyStored, _id=0, _a=0x1b) at moc_abstractgroupableitem.cpp:134
#25 0x00007f4950e769c9 in QMetaObject::activate (sender=sender@entry=0x458ca00, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea374e670) at kernel/qobject.cpp:3716
#26 0x00007f4950e77057 in QMetaObject::activate (sender=sender@entry=0x458ca00, m=m@entry=0x7f48637fe6e0 <TaskManager::Task::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffea374e670) at kernel/qobject.cpp:3582
#27 0x00007f48635e2218 in TaskManager::Task::changed (this=this@entry=0x458ca00, _t1=...) at moc_task.cpp:354
#28 0x00007f48635c2a8a in TaskManager::Task::setActive (this=this@entry=0x458ca00, a=a@entry=true) at ../../libtaskmanager/task.cpp:178
#29 0x00007f48635d565c in TaskManager::TaskManager::activeWindowChanged (this=0x7f48637fff90 <TaskManager::(anonymous namespace)::Q_QGS_privateTaskManagerSelf::innerFunction()::holder>, w=<optimized out>) at ../../libtaskmanager/taskmanager.cpp:412
#30 0x00007f48635d79d9 in TaskManager::TaskManager::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./moc_taskmanager.cpp:175
#31 0x00007f4950e769c9 in QMetaObject::activate (sender=0x7f49553799f0 <(anonymous namespace)::Q_QGS_g_kwmInstanceContainer::innerFunction()::holder>, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffea374e860) at kernel/qobject.cpp:3716
#32 0x00007f4950e77057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f4955378b40 <KWindowSystem::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffea374e860) at kernel/qobject.cpp:3582
#33 0x00007f49551682f2 in KWindowSystem::activeWindowChanged (this=<optimized out>, _t1=90181351) at moc_kwindowsystem.cpp:302
#34 0x00007f4955151026 in NETEventFilter::nativeEventFilter (this=0x4584760, ev=0x7f493c003b10) at ../../src/kwindowsystem_x11.cpp:208
#35 0x00007f4950e42510 in QAbstractEventDispatcher::filterNativeEvent (this=this@entry=0x1617760, eventType=..., message=message@entry=0x7f493c003b10, result=result@entry=0x7ffea374e9c8) at kernel/qabstracteventdispatcher.cpp:460
#36 0x00007f494385602d in QXcbConnection::handleXcbEvent (this=this@entry=0x15e80f0, event=event@entry=0x7f493c003b10) at qxcbconnection.cpp:863
#37 0x00007f49438574bb in QXcbConnection::processXcbEvents (this=0x15e80f0) at qxcbconnection.cpp:1303
#38 0x00007f4950e7773a in QObject::event (this=0x15e80f0, e=<optimized out>) at kernel/qobject.cpp:1245
#39 0x00007f495174fb2c in QApplicationPrivate::notify_helper (this=0x15db420, receiver=0x15e80f0, e=0x7f493c003d00) at kernel/qapplication.cpp:3720
#40 0x00007f4951755000 in QApplication::notify (this=0x7ffea374f240, receiver=0x15e80f0, e=0x7f493c003d00) at kernel/qapplication.cpp:3503
#41 0x00007f4950e45c2b in QCoreApplication::notifyInternal (this=0x7ffea374f240, receiver=0x15e80f0, event=event@entry=0x7f493c003d00) at kernel/qcoreapplication.cpp:935
#42 0x00007f4950e47c9b in sendEvent (event=0x7f493c003d00, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#43 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x15d0f00) at kernel/qcoreapplication.cpp:1552
#44 0x00007f4950e48298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#45 0x00007f4950e9e843 in postEventSourceDispatch (s=0x1617780) at kernel/qeventdispatcher_glib.cpp:271
#46 0x00007f494cc92c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f494cc92f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007f494cc92fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00007f4950e9ec57 in QEventDispatcherGlib::processEvents (this=0x1617760, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#50 0x00007f4950e433e2 in QEventLoop::exec (this=this@entry=0x7ffea374f0c0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#51 0x00007f4950e4b02c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#52 0x00007f495118a31c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#53 0x00007f495174b7a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#54 0x000000000042fd9b in main (argc=4, argv=<optimized out>) at ../../shell/main.cpp:158

Possible duplicates by query: bug 349103, bug 348720, bug 348689, bug 348535, bug 348222.

Reported using DrKonqi