Application: plasmashell (5.3.2)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-30-generic x86_64
Distribution: Ubuntu 15.04

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

Crash occured right after reboot, no interaction. Kubuntu 15.04

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plazma (plasmashell), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7f8e575bc7c0 (LWP 1417))]

Thread 19 (Thread 0x7f8e421d5700 (LWP 1419)):
#0  0x00007f8e5212f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e548c2b72 in poll (__timeout=-1, __nfds=1, __fds=0x7f8e421d4d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x22d0440, cond=cond@entry=0x22d0480, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:447
#3  0x00007f8e548c464f in xcb_wait_for_event (c=0x22d0440) at ../../src/xcb_in.c:622
#4  0x00007f8e44d64099 in QXcbEventReader::run (this=0x22de6a0) at qxcbconnection.cpp:1105
#5  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x22de6a0) at thread/qthread_unix.cpp:337
#6  0x00007f8e519b66aa in start_thread (arg=0x7f8e421d5700) at pthread_create.c:333
#7  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7f8e3bdf7700 (LWP 1446)):
#0  0x00007f8e527a89ca in testAndSetRelaxed<QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x23bd3a8: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  testAndSetAcquire<QMutexData*, QMutexData*> (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x23bd3a8: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  testAndSetAcquire (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, this=0x23bd3a8, this@entry=0x29) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:270
#3  fastTryLock (current=<synthetic pointer>, this=0x23bd3a8, this@entry=0x29) at thread/qmutex.h:82
#4  QMutex::lock (this=this@entry=0x23bd3a8) at thread/qmutex.cpp:212
#5  0x00007f8e52a475a9 in QMutexLocker (m=0x23bd3a8, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  canWaitLocked (this=0x23bd380) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:243
#7  postEventSourcePrepare (timeout=<synthetic pointer>, s=0x7f8e340012f0) at kernel/qeventdispatcher_glib.cpp:254
#8  postEventSourceCheck (source=0x7f8e340012f0) at kernel/qeventdispatcher_glib.cpp:264
#9  0x00007f8e4e8508c1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f8e4e850e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e340008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e3bdf6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x23bd840) at thread/qthread_unix.cpp:337
#17 0x00007f8e519b66aa in start_thread (arg=0x7f8e3bdf7700) at pthread_create.c:333
#18 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7f8e31356700 (LWP 1453)):
#0  0x00007f8e4e8957a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8e4e850490 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e2c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e31355de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x274e710) at thread/qthread_unix.cpp:337
#9  0x00007f8e519b66aa in start_thread (arg=0x7f8e31356700) at pthread_create.c:333
#10 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7f8e2ab95700 (LWP 1459)):
#0  0x00007f8e5212b49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4ae3c073 in ?? () from /usr/lib/nvidia-355/tls/libnvidia-tls.so.355.11
#2  0x00007f8e4e8942f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e4e85096c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8e4e850e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e1c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e2ab94de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2905c40) at thread/qthread_unix.cpp:337
#11 0x00007f8e519b66aa in start_thread (arg=0x7f8e2ab95700) at pthread_create.c:333
#12 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7f8e29b14700 (LWP 1460)):
#0  0x00007f8e5212f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4e850ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e29b13de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2a04650) at thread/qthread_unix.cpp:337
#8  0x00007f8e519b66aa in start_thread (arg=0x7f8e29b14700) at pthread_create.c:333
#9  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7f8e28a13700 (LWP 1462)):
#0  0x00007f8e5212f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4e850ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e28a12de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2b0dfd0) at thread/qthread_unix.cpp:337
#8  0x00007f8e519b66aa in start_thread (arg=0x7f8e28a13700) at pthread_create.c:333
#9  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7f8e1b7ff700 (LWP 1463)):
#0  0x00007f8e5212b49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4ae3c073 in ?? () from /usr/lib/nvidia-355/tls/libnvidia-tls.so.355.11
#2  0x00007f8e4e8942f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e4e85096c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8e4e850e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e1b7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2bf9f90) at thread/qthread_unix.cpp:337
#11 0x00007f8e519b66aa in start_thread (arg=0x7f8e1b7ff700) at pthread_create.c:333
#12 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7f8e1a192700 (LWP 1464)):
#0  0x00007f8e4e895789 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8e4e85073e in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e1a191de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2d39640) at thread/qthread_unix.cpp:337
#9  0x00007f8e519b66aa in start_thread (arg=0x7f8e1a192700) at pthread_create.c:333
#10 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7f8e190d1700 (LWP 1465)):
#0  0x00007f8e5212f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4e850ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8e0c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8e190d0de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2df3b30) at thread/qthread_unix.cpp:337
#8  0x00007f8e519b66aa in start_thread (arg=0x7f8e190d1700) at pthread_create.c:333
#9  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7f8e07dbf700 (LWP 1466)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8e566f6644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007f8e566f6689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007f8e519b66aa in start_thread (arg=0x7f8e07dbf700) at pthread_create.c:333
#4  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7f8d874a6700 (LWP 1467)):
#0  0x00007f8e5212b49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4ae3c073 in ?? () from /usr/lib/nvidia-355/tls/libnvidia-tls.so.355.11
#2  0x00007f8e4e8942f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e4e85096c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8e4e850e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8d800008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8d874a5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x2f06470) at thread/qthread_unix.cpp:337
#11 0x00007f8e519b66aa in start_thread (arg=0x7f8d874a6700) at pthread_create.c:333
#12 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7f8d7eeef700 (LWP 1624)):
#0  0x00007f8e5212f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4e850ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8d780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8d7eeeed90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8e5726bb56 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x3548c40) at thread/qthread_unix.cpp:337
#8  0x00007f8e519b66aa in start_thread (arg=0x7f8d7eeef700) at pthread_create.c:333
#9  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7f8d7e6ee700 (LWP 1676)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8e527b1c6b in wait (time=18446744073709551615, this=0x358cd60) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x36aa080, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f8e572ddfab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f8e572de3a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x36aa000) at thread/qthread_unix.cpp:337
#6  0x00007f8e519b66aa in start_thread (arg=0x7f8d7e6ee700) at pthread_create.c:333
#7  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7f8d75bfe700 (LWP 1685)):
#0  0x00007f8e5212b49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4ae3c073 in ?? () from /usr/lib/nvidia-355/tls/libnvidia-tls.so.355.11
#2  0x00007f8e4e8942f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e4e85096c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8e4e850e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8d6c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8d75bfdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#9  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x3456930) at thread/qthread_unix.cpp:337
#11 0x00007f8e519b66aa in start_thread (arg=0x7f8d75bfe700) at pthread_create.c:333
#12 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f8d6a9f1700 (LWP 2074)):
#0  0x00007f8e4e8957a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8e4e850d6d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8d640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8d6a9f0de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x3801140) at thread/qthread_unix.cpp:337
#8  0x00007f8e519b66aa in start_thread (arg=0x7f8d6a9f1700) at pthread_create.c:333
#9  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f8d632c2700 (LWP 2104)):
[KCrash Handler]
#6  size (this=0x20f64890, this@entry=0x7f8e5245d698 <operator new(unsigned long)+24>) at ../../include/QtCore/../../src/corelib/tools/qstring.h:225
#7  qHash (key=..., seed=1722838808) at tools/qhash.cpp:184
#8  0x00007f8e52855fc8 in findNode (ahp=<synthetic pointer>, akey=..., this=0x7f8d632c1700) at ../../include/QtCore/../../src/corelib/tools/qhash.h:912
#9  insert (avalue=..., akey=..., this=0x7f8d632c1700) at ../../include/QtCore/../../src/corelib/tools/qhash.h:768
#10 insert (value=..., this=0x7f8d632c1700) at ../../include/QtCore/../../src/corelib/tools/qset.h:188
#11 QtPrivate::QStringList_removeDuplicates (that=0x7f8d632c1750) at tools/qstringlist.cpp:749
#12 0x00007f8d69579083 in KCupsConnection::updateSubscription() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#13 0x00007f8e52a1f9c9 in QMetaObject::activate (sender=sender@entry=0x382f7c0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3716
#14 0x00007f8e52a20057 in QMetaObject::activate (sender=sender@entry=0x382f7c0, m=m@entry=0x7f8e52c49580 <QTimer::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3582
#15 0x00007f8e52a9f610 in QTimer::timeout (this=this@entry=0x382f7c0) at .moc/moc_qtimer.cpp:192
#16 0x00007f8e52a2d918 in QTimer::timerEvent (this=0x382f7c0, e=<optimized out>) at kernel/qtimer.cpp:247
#17 0x00007f8e52a206f3 in QObject::event (this=0x382f7c0, e=<optimized out>) at kernel/qobject.cpp:1267
#18 0x00007f8e532f8b2c in QApplicationPrivate::notify_helper (this=0x22b2bc0, receiver=0x382f7c0, e=0x7f8d632c1b70) at kernel/qapplication.cpp:3720
#19 0x00007f8e532fe000 in QApplication::notify (this=0x7ffe5a2ebf50, receiver=0x382f7c0, e=0x7f8d632c1b70) at kernel/qapplication.cpp:3503
#20 0x00007f8e529eec2b in QCoreApplication::notifyInternal (this=0x7ffe5a2ebf50, receiver=0x382f7c0, event=event@entry=0x7f8d632c1b70) at kernel/qcoreapplication.cpp:935
#21 0x00007f8e52a46ae5 in sendEvent (event=0x7f8d632c1b70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#22 QTimerInfoList::activateTimers (this=0x7f8d5c002ad0) at kernel/qtimerinfo_unix.cpp:635
#23 0x00007f8e52a46f61 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:177
#24 0x00007f8e4e850c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f8e4e850f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f8e52a47c57 in QEventDispatcherGlib::processEvents (this=0x7f8d5c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#28 0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8d632c1dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#29 0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#30 0x00007f8d69578cf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#31 0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x3aefd00) at thread/qthread_unix.cpp:337
#32 0x00007f8e519b66aa in start_thread (arg=0x7f8d632c2700) at pthread_create.c:333
#33 0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f8d5bfff700 (LWP 2138)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8e527b1c6b in wait (time=18446744073709551615, this=0x3c0b000) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x294ec50, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007f8e572ddfab in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#4  0x00007f8e572de3a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x294ebd0) at thread/qthread_unix.cpp:337
#6  0x00007f8e519b66aa in start_thread (arg=0x7f8d5bfff700) at pthread_create.c:333
#7  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f8d5b7fe700 (LWP 2139)):
#0  0x00007f8e5212f8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f8e4e850ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8e52a47c6c in QEventDispatcherGlib::processEvents (this=0x7f8d4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7f8d5b7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f8e527abb44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f8e5453af65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f8e527b0b0e in QThreadPrivate::start (arg=0x4435da0) at thread/qthread_unix.cpp:337
#8  0x00007f8e519b66aa in start_thread (arg=0x7f8d5b7fe700) at pthread_create.c:333
#9  0x00007f8e5213aeed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f8e575bc7c0 (LWP 1417)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f8e548c2db9 in _xcb_conn_wait (c=c@entry=0x22d0440, cond=cond@entry=0x7ffe5a2eabd0, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:415
#2  0x00007f8e548c43ff in wait_for_reply (c=c@entry=0x22d0440, request=1765, e=e@entry=0x0) at ../../src/xcb_in.c:490
#3  0x00007f8e548c4512 in xcb_wait_for_reply (c=0x22d0440, request=1765, e=0x0) at ../../src/xcb_in.c:520
#4  0x00007f8e44d5bd9d in QXcbClipboard::getSelectionOwner (this=this@entry=0x22f9220, atom=<optimized out>) at qxcbclipboard.cpp:359
#5  0x00007f8e44d5be32 in QXcbClipboard::mimeData (this=0x22f9220, mode=QClipboard::Clipboard) at qxcbclipboard.cpp:390
#6  0x00007f8e4135682b in KFilePreviewGenerator::Private::applyCutItemEffect(KFileItemList const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOFileWidgets.so.5
#7  0x00007f8e41356e47 in KFilePreviewGenerator::Private::updateIcons(KFileItemList const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOFileWidgets.so.5
#8  0x00007f8e52a1f9c9 in QMetaObject::activate (sender=0x314ca70, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffe5a2eafd0) at kernel/qobject.cpp:3716
#9  0x00007f8e4ce07e35 in KCoreDirLister::newItems(KFileItemList const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#10 0x00007f8e4ce0c425 in KCoreDirLister::Private::emitItems() () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#11 0x00007f8e4ce19f2f in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#12 0x00007f8e52a1f9c9 in QMetaObject::activate (sender=0x3198450, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffe5a2eb2c0) at kernel/qobject.cpp:3716
#13 0x00007f8e4cdc6934 in KIO::ListJob::entries(KIO::Job*, QList<KIO::UDSEntry> const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#14 0x00007f8e4cdc7e72 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#15 0x00007f8e4cdc849d in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#16 0x00007f8e52a1f9c9 in QMetaObject::activate (sender=0x22ec6b0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffe5a2eb510) at kernel/qobject.cpp:3716
#17 0x00007f8e4cdaeb05 in KIO::SlaveInterface::listEntries(QList<KIO::UDSEntry> const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#18 0x00007f8e4cdb1992 in KIO::SlaveInterface::dispatch(int, QByteArray const&) () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#19 0x00007f8e4cdaeff7 in KIO::SlaveInterface::dispatch() () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#20 0x00007f8e4cdb3736 in KIO::Slave::gotInput() () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#21 0x00007f8e4ce32685 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#22 0x00007f8e52a1f9c9 in QMetaObject::activate (sender=0x2903de0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3716
#23 0x00007f8e4cd5c990 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#24 0x00007f8e52a2073a in QObject::event (this=0x2903de0, e=<optimized out>) at kernel/qobject.cpp:1245
#25 0x00007f8e532f8b2c in QApplicationPrivate::notify_helper (this=0x22b2bc0, receiver=0x2903de0, e=0x41603e0) at kernel/qapplication.cpp:3720
#26 0x00007f8e532fe000 in QApplication::notify (this=0x7ffe5a2ebf50, receiver=0x2903de0, e=0x41603e0) at kernel/qapplication.cpp:3503
#27 0x00007f8e529eec2b in QCoreApplication::notifyInternal (this=0x7ffe5a2ebf50, receiver=0x2903de0, event=event@entry=0x41603e0) at kernel/qcoreapplication.cpp:935
#28 0x00007f8e529f0c9b in sendEvent (event=0x41603e0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#29 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x22a7f40) at kernel/qcoreapplication.cpp:1552
#30 0x00007f8e529f1298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#31 0x00007f8e52a47843 in postEventSourceDispatch (s=0x2303480) at kernel/qeventdispatcher_glib.cpp:271
#32 0x00007f8e4e850c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f8e4e850f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f8e4e850fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f8e52a47c57 in QEventDispatcherGlib::processEvents (this=0x2312d20, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#36 0x00007f8e529ec3e2 in QEventLoop::exec (this=this@entry=0x7ffe5a2ebdd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#37 0x00007f8e529f402c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#38 0x00007f8e52d3331c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#39 0x00007f8e532f47a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#40 0x0000000000430253 in main (argc=2, argv=<optimized out>) at ../../shell/main.cpp:154

Possible duplicates by query: bug 353396, bug 349710.

Reported using DrKonqi