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:
i was connecting my external USB hard drive with CD/DVD/BD emulation

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 0x7fd283ba87c0 (LWP 12989))]

Thread 25 (Thread 0x7fd26d7b8700 (LWP 12991)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd280eb4b72 in poll (__timeout=-1, __nfds=1, __fds=0x7fd26d7b7d00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  _xcb_conn_wait (c=c@entry=0x247cf20, cond=cond@entry=0x247cf60, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:447
#3  0x00007fd280eb664f in xcb_wait_for_event (c=0x247cf20) at ../../src/xcb_in.c:622
#4  0x00007fd270347099 in QXcbEventReader::run (this=0x248b180) at qxcbconnection.cpp:1105
#5  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x248b180) at thread/qthread_unix.cpp:337
#6  0x00007fd27dfa86aa in start_thread (arg=0x7fd26d7b8700) at pthread_create.c:333
#7  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fd2673e7700 (LWP 12993)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd2673e6de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x2564bf0) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd2673e7700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fd25c5c4700 (LWP 12997)):
#0  0x00007fd27ae428b4 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd27ae42e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd25c5c3de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x277dfc0) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd25c5c4700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fd259e5a700 (LWP 13011)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd259e59de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x27df3a0) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd259e5a700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fd258d89700 (LWP 13012)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd258d88de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x26a6dd0) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd258d89700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fd24b7ff700 (LWP 13013)):
#0  0x00007fd27ae877a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd27ae42852 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2400008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd24b7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x2a64fa0) at thread/qthread_unix.cpp:337
#9  0x00007fd27dfa86aa in start_thread (arg=0x7fd24b7ff700) at pthread_create.c:333
#10 0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fd24a7fe700 (LWP 13014)):
#0  0x00007fd27ae877a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd27ae428b9 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd24a7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x2a0fef0) at thread/qthread_unix.cpp:337
#9  0x00007fd27dfa86aa in start_thread (arg=0x7fd24a7fe700) at pthread_create.c:333
#10 0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fd2493c9700 (LWP 13015)):
#0  0x00007fd27ed9aa24 in QMutex::lock (this=this@entry=0x306eb68) at thread/qmutex.cpp:218
#1  0x00007fd27f0391db in QMutexLocker (m=0x306eb68, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#2  canWaitLocked (this=0x306eb40) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:243
#3  postEventSourcePrepare (s=0x7fd23c0012d0, timeout=0x7fd2493c8c14) at kernel/qeventdispatcher_glib.cpp:254
#4  0x00007fd27ae423fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd27ae42de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd23c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#8  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd2493c8de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#10 0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x3062890) at thread/qthread_unix.cpp:337
#12 0x00007fd27dfa86aa in start_thread (arg=0x7fd2493c9700) at pthread_create.c:333
#13 0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fd237fff700 (LWP 13016)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd2300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd237ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x3161130) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd237fff700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fd236ffe700 (LWP 13017)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd282ce8644 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#2  0x00007fd282ce8689 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#3  0x00007fd27dfa86aa in start_thread (arg=0x7fd236ffe700) at pthread_create.c:333
#4  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fd2366fd700 (LWP 13018)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1a80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd2366fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x3262520) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd2366fd700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fd1af43c700 (LWP 13019)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd1af43bd90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=this@entry=0x349dae0) at thread/qthread.cpp:503
#6  0x00007fd28385db56 in QQuickPixmapReader::run (this=0x349dae0) at util/qquickpixmapcache.cpp:714
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x349dae0) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd1af43c700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fd1aec3b700 (LWP 13021)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd27eda3c6b in wait (time=18446744073709551615, this=0x3476440) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x32611c8, mutex=mutex@entry=0x32611c0, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd2838cffab in takeEvent (wait=true, this=0x32611b8) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x3261140) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd2838d03a0 in QSGRenderThread::run (this=0x3261140) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x3261140) at thread/qthread_unix.cpp:337
#7  0x00007fd27dfa86aa in start_thread (arg=0x7fd1aec3b700) at pthread_create.c:333
#8  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fd1a37ff700 (LWP 13022)):
#0  0x00007fd27f039462 in timerSourceCheck (source=0x7fd198003070) at kernel/qeventdispatcher_glib.cpp:164
#1  0x00007fd27ae428c1 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1980008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd1a37fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x2556280) at thread/qthread_unix.cpp:337
#9  0x00007fd27dfa86aa in start_thread (arg=0x7fd1a37ff700) at pthread_create.c:333
#10 0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fd197bd6700 (LWP 13031)):
#0  0x00007fff36bbcd28 in clock_gettime ()
#1  0x00007fd27e73b38d in __GI___clock_gettime (clock_id=<optimized out>, tp=<optimized out>) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007fd27ee58cb6 in qt_clock_gettime (ts=0x7fd197bd5b40, clock=<optimized out>) at tools/qelapsedtimer_unix.cpp:105
#3  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:161
#4  qt_gettime () at tools/qelapsedtimer_unix.cpp:170
#5  0x00007fd27f037639 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fd1900030d0) at kernel/qtimerinfo_unix.cpp:84
#6  0x00007fd27f037ba5 in QTimerInfoList::timerWait (this=0x7fd1900030d0, tm=...) at kernel/qtimerinfo_unix.cpp:379
#7  0x00007fd27f03903e in timerSourcePrepareHelper (timeout=0x7fd197bd5c14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#8  timerSourcePrepare (source=<optimized out>, timeout=0x7fd197bd5c14) at kernel/qeventdispatcher_glib.cpp:160
#9  0x00007fd27ae423fd in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fd27ae42de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#13 0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd197bd5de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#14 0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#15 0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#16 0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x3be02b0) at thread/qthread_unix.cpp:337
#17 0x00007fd27dfa86aa in start_thread (arg=0x7fd197bd6700) at pthread_create.c:333
#18 0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fd196bd5700 (LWP 13032)):
#0  0x00007fd27ae877a2 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd27ae42490 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42de8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd196bd4de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x3cd4860) at thread/qthread_unix.cpp:337
#9  0x00007fd27dfa86aa in start_thread (arg=0x7fd196bd5700) at pthread_create.c:333
#10 0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fd18d492700 (LWP 13242)):
#0  0x00007fd27ae877a4 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fd27ae42ddb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1840008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd18d491dc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd18f6facf7 in KCupsConnection::run() () from /usr/lib/x86_64-linux-gnu/libkcupslib.so
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x410d900) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd18d492700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fd1837fe700 (LWP 13253)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd27eda3c6b in wait (time=18446744073709551615, this=0x43711b0) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x41f2068, mutex=mutex@entry=0x41f2060, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd2838cffab in takeEvent (wait=true, this=0x41f2058) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x41f1fe0) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd2838d03a0 in QSGRenderThread::run (this=0x41f1fe0) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x41f1fe0) at thread/qthread_unix.cpp:337
#7  0x00007fd27dfa86aa in start_thread (arg=0x7fd1837fe700) at pthread_create.c:333
#8  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fd182ffd700 (LWP 13257)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd1780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd182ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x348f4a0) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd182ffd700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fd181ffc700 (LWP 13258)):
#0  0x00007fd27e7218dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fd27ae42ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd27f039c6c in QEventDispatcherGlib::processEvents (this=0x7fd16c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fd181ffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fd27ed9db44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007fd280b2cf65 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x4628820) at thread/qthread_unix.cpp:337
#8  0x00007fd27dfa86aa in start_thread (arg=0x7fd181ffc700) at pthread_create.c:333
#9  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fd16b5ef700 (LWP 13273)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd27eda3c6b in wait (time=18446744073709551615, this=0x4f16170) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x4f1da78, mutex=mutex@entry=0x4f1da70, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd2838cffab in takeEvent (wait=true, this=0x4f1da68) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x4f1d9f0) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd2838d03a0 in QSGRenderThread::run (this=0x4f1d9f0) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x4f1d9f0) at thread/qthread_unix.cpp:337
#7  0x00007fd27dfa86aa in start_thread (arg=0x7fd16b5ef700) at pthread_create.c:333
#8  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fd16adee700 (LWP 13274)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd27eda3c6b in wait (time=18446744073709551615, this=0x4bae390) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x4b97068, mutex=mutex@entry=0x4b97060, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd2838cffab in takeEvent (wait=true, this=0x4b97058) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x4b96fe0) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd2838d03a0 in QSGRenderThread::run (this=0x4b96fe0) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x4b96fe0) at thread/qthread_unix.cpp:337
#7  0x00007fd27dfa86aa in start_thread (arg=0x7fd16adee700) at pthread_create.c:333
#8  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fd1332fe700 (LWP 13308)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd27eda3c6b in wait (time=18446744073709551615, this=0x651a440) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x639c688, mutex=mutex@entry=0x639c680, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd2838cffab in takeEvent (wait=true, this=0x639c678) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x639c600) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd2838d03a0 in QSGRenderThread::run (this=0x639c600) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x639c600) at thread/qthread_unix.cpp:337
#7  0x00007fd27dfa86aa in start_thread (arg=0x7fd1332fe700) at pthread_create.c:333
#8  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fd133fff700 (LWP 13653)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fd27eda3c6b in wait (time=18446744073709551615, this=0x5ce1490) at thread/qwaitcondition_unix.cpp:128
#2  QWaitCondition::wait (this=this@entry=0x6accf18, mutex=mutex@entry=0x6accf10, time=time@entry=18446744073709551615) at thread/qwaitcondition_unix.cpp:200
#3  0x00007fd2838cffab in takeEvent (wait=true, this=0x6accf08) at scenegraph/qsgthreadedrenderloop.cpp:232
#4  QSGRenderThread::processEventsAndWaitForMore (this=this@entry=0x6acce90) at scenegraph/qsgthreadedrenderloop.cpp:643
#5  0x00007fd2838d03a0 in QSGRenderThread::run (this=0x6acce90) at scenegraph/qsgthreadedrenderloop.cpp:672
#6  0x00007fd27eda2b0e in QThreadPrivate::start (arg=0x6acce90) at thread/qthread_unix.cpp:337
#7  0x00007fd27dfa86aa in start_thread (arg=0x7fd133fff700) at pthread_create.c:333
#8  0x00007fd27e72ceed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fd283ba87c0 (LWP 12989)):
[KCrash Handler]
#6  0x00007fd280aadff4 in QQmlContext::isValid() const () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fd280a9ebc9 in QQmlExpression::QQmlExpression(QQmlScriptString const&, QQmlContext*, QObject*, QObject*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007fd283837dfc in QQuickScriptActionPrivate::execute (this=<optimized out>) at util/qquickanimation.cpp:990
#9  0x00007fd280b67af5 in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007fd280b693ac in QSequentialAnimationGroupJob::activateCurrentAnimation(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007fd280b6948c in QSequentialAnimationGroupJob::uncontrolledAnimationFinished(QAbstractAnimationJob*) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007fd280b66faf in QAbstractAnimationJob::finished() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007fd280b67bd8 in QAbstractAnimationJob::setState(QAbstractAnimationJob::State) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#14 0x00007fd283880631 in QQuickAnimatorProxyJob::setWindow (this=0x52047e0, window=0x0) at util/qquickanimatorjob.cpp:150
#15 0x00007fd27f0119c9 in QMetaObject::activate (sender=0x65351e0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7fff36a8e3b0) at kernel/qobject.cpp:3716
#16 0x00007fd27f012057 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7fd283b2a780 <QQuickItem::staticMetaObject>, local_signal_index=local_signal_index@entry=11, argv=argv@entry=0x7fff36a8e3b0) at kernel/qobject.cpp:3582
#17 0x00007fd2838e2b42 in QQuickItem::windowChanged (this=<optimized out>, _t1=0x0) at .moc/moc_qquickitem.cpp:1036
#18 0x00007fd2838f1037 in QQuickItemPrivate::derefWindow (this=this@entry=0x4edb330) at items/qquickitem.cpp:2861
#19 0x00007fd2838f207b in QQuickItem::setParentItem (this=this@entry=0x65351e0, parentItem=parentItem@entry=0x0) at items/qquickitem.cpp:2539
#20 0x00007fd2838f2546 in QQuickItem::~QQuickItem (this=0x65351e0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2240
#21 0x00007fd28390c7c6 in ~QQmlElement (this=0x65351e0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:98
#22 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x65351e0, __in_chrg=<optimized out>) at ../../include/QtQml/../../src/qml/qml/qqmlprivate.h:98
#23 0x00007fd27f012778 in QObject::event (this=this@entry=0x65351e0, e=e@entry=0x5ce3b50) at kernel/qobject.cpp:1236
#24 0x00007fd2838eeb6b in QQuickItem::event (this=0x65351e0, ev=0x5ce3b50) at items/qquickitem.cpp:7305
#25 0x00007fd27f8eab2c in QApplicationPrivate::notify_helper (this=0x245e940, receiver=0x65351e0, e=0x5ce3b50) at kernel/qapplication.cpp:3720
#26 0x00007fd27f8f0000 in QApplication::notify (this=0x7fff36a8ec50, receiver=0x65351e0, e=0x5ce3b50) at kernel/qapplication.cpp:3503
#27 0x00007fd27efe0c2b in QCoreApplication::notifyInternal (this=0x7fff36a8ec50, receiver=0x65351e0, event=event@entry=0x5ce3b50) at kernel/qcoreapplication.cpp:935
#28 0x00007fd27efe2c9b in sendEvent (event=0x5ce3b50, 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=0x2453e20) at kernel/qcoreapplication.cpp:1552
#30 0x00007fd27efe3298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#31 0x00007fd27f039843 in postEventSourceDispatch (s=0x24b8de0) at kernel/qeventdispatcher_glib.cpp:271
#32 0x00007fd27ae42c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fd27ae42f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fd27ae42fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fd27f039c57 in QEventDispatcherGlib::processEvents (this=0x24ac1a0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#36 0x00007fd27efde3e2 in QEventLoop::exec (this=this@entry=0x7fff36a8ead0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#37 0x00007fd27efe602c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#38 0x0000000000430253 in main ()

Possible duplicates by query: bug 351789, bug 351108, bug 350763, bug 350540, bug 350207.

Reported using DrKonqi