Bug 347241

Summary: Some random crash
Product: [Plasma] plasmashell Reporter: Laurent Bonnaud <L.Bonnaud>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED DUPLICATE    
Severity: crash CC: bhush94, plasma-bugs
Priority: NOR Keywords: drkonqi
Version: 5.3.0   
Target Milestone: 1.0   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Laurent Bonnaud 2015-05-05 15:46:00 UTC 
Application: plasmashell (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 4.0.1-040001-generic x86_64
Distribution: Ubuntu 15.04

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

I had just changed the visible virtual desktop to read mail and was clicking on the mail to read.

-- 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 0x7fa22d8a67c0 (LWP 2495))]

Thread 38 (Thread 0x7fa219640700 (LWP 2497)):
#0  0x00007fa22844e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa22abdfb72 in _xcb_conn_wait (__timeout=-1, __nfds=1, __fds=0x7fa21963fd00) at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007fa22abdfb72 in _xcb_conn_wait (c=c@entry=0xbff330, cond=cond@entry=0xbff370, vector=vector@entry=0x0, count=count@entry=0x0) at ../../src/xcb_conn.c:447
#3  0x00007fa22abe164f in xcb_wait_for_event (c=0xbff330) at ../../src/xcb_in.c:622
#4  0x00007fa21b987099 in QXcbEventReader::run() (this=0xc09230) at qxcbconnection.cpp:1105
#5  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0xc09230) at thread/qthread_unix.cpp:337
#6  0x00007fa227cd56aa in start_thread (arg=0x7fa219640700) at pthread_create.c:333
#7  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 37 (Thread 0x7fa20d08c700 (LWP 2503)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa208000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7ea2a in g_main_context_dispatch (context=context@entry=0x7fa208000990) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3740
#2  0x00007fa224d7ef20 in g_main_context_iterate (context=context@entry=0x7fa208000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3808
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa208000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa2080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa20d08bde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0xe39540) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0xe39540) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0xe39540) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa20d08c700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 36 (Thread 0x7fa202e3e700 (LWP 2517)):
#0  0x00007fa224d7e654 in g_main_context_query (context=context@entry=0x7fa1fc000990, max_priority=2147483647, timeout=timeout@entry=0x7fa202e3dca4, fds=fds@entry=0x7fa1fc007420, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3516
#1  0x00007fa224d7ee37 in g_main_context_iterate (context=context@entry=0x7fa1fc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3790
#2  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1fc000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#3  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa202e3dde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x10bc110) at thread/qthread.cpp:503
#6  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x10bc110) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x10bc110) at thread/qthread_unix.cpp:337
#8  0x00007fa227cd56aa in start_thread (arg=0x7fa202e3e700) at pthread_create.c:333
#9  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 35 (Thread 0x7fa1fbfff700 (LWP 2524)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa1f0000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7e852 in g_main_context_check (context=context@entry=0x7fa1f0000990, max_priority=2147483647, fds=fds@entry=0x7fa1f0003020, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3716
#2  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa1f0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1f0000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1f00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1fbffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x11bf850) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x11bf850) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x11bf850) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1fbfff700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 34 (Thread 0x7fa1faffe700 (LWP 2526)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa1e8000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7e852 in g_main_context_check (context=context@entry=0x7fa1e8000990, max_priority=2147483647, fds=fds@entry=0x7fa1e8007020, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3716
#2  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa1e8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1e8000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1faffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x12ec8b0) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x12ec8b0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x12ec8b0) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1faffe700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 33 (Thread 0x7fa1f9ffd700 (LWP 2530)):
#0  0x00007fa224d7e920 in g_main_context_check (context=context@entry=0x7fa1ec000990, max_priority=2147483647, fds=fds@entry=0x7fa1ec005130, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3665
#1  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa1ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#2  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1ec000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#3  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1f9ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x13ccb50) at thread/qthread.cpp:503
#6  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x13ccb50) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x13ccb50) at thread/qthread_unix.cpp:337
#8  0x00007fa227cd56aa in start_thread (arg=0x7fa1f9ffd700) at pthread_create.c:333
#9  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 32 (Thread 0x7fa1f8ffc700 (LWP 2534)):
#0  0x00007fa228ac7a20 in QMutex::lock() (this=this@entry=0x14c0548) at thread/qmutex.cpp:218
#1  0x00007fa228d661db in postEventSourcePrepare(GSource*, gint*) (m=0x14c0548, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#2  0x00007fa228d661db in postEventSourcePrepare(GSource*, gint*) (this=0x14c0520) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:243
#3  0x00007fa228d661db in postEventSourcePrepare(GSource*, gint*) (s=0x7fa1e0005000, timeout=timeout@entry=0x7fa1f8ffbc14) at kernel/qeventdispatcher_glib.cpp:254
#4  0x00007fa224d7e3fd in g_main_context_prepare (context=context@entry=0x7fa1e0000990, priority=priority@entry=0x7fa1f8ffbca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3410
#5  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa1e0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#6  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1e0000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#7  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1e00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#8  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1f8ffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#9  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x14c0370) at thread/qthread.cpp:503
#10 0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x14c0370) at qml/ftw/qqmlthread.cpp:141
#11 0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x14c0370) at thread/qthread_unix.cpp:337
#12 0x00007fa227cd56aa in start_thread (arg=0x7fa1f8ffc700) at pthread_create.c:333
#13 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 31 (Thread 0x7fa1e77ff700 (LWP 2535)):
#0  0x00007fa224d7bf02 in g_source_iter_next (iter=iter@entry=0x7fa1e77fec20, source=source@entry=0x7fa1e77fec18) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:931
#1  0x00007fa224d7e39b in g_main_context_prepare (context=context@entry=0x7fa1dc000990, priority=priority@entry=0x7fa1e77feca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3388
#2  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa1dc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1dc000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1dc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1e77fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x15acdd0) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x15acdd0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x15acdd0) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1e77ff700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 30 (Thread 0x7fa1e67fe700 (LWP 2538)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa1d4000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7e8b9 in g_main_context_check (context=context@entry=0x7fa1d4000990, max_priority=2147483647, fds=fds@entry=0x7fa1d4005220, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3647
#2  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa1d4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1d4000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1d40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1e67fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x16c2a90) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x16c2a90) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x16c2a90) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1e67fe700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 29 (Thread 0x7fa1e57fd700 (LWP 2540)):
#0  0x00007fa224dc3789 in g_mutex_lock (mutex=mutex@entry=0x7fa1d8000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1342
#1  0x00007fa224d7e8cc in g_main_context_check (context=context@entry=0x7fa1d8000990, max_priority=2147483647, fds=fds@entry=0x7fa1d8005420, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3651
#2  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa1d8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1d8000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1d80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1e57fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x17c0830) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x17c0830) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x17c0830) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1e57fd700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 28 (Thread 0x7fa1d3fff700 (LWP 2542)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa1cc000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7ea2a in g_main_context_dispatch (context=context@entry=0x7fa1cc000990) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3740
#2  0x00007fa224d7ef20 in g_main_context_iterate (context=context@entry=0x7fa1cc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3808
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1cc000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1cc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1d3ffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x188c670) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x188c670) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x188c670) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1d3fff700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 27 (Thread 0x7fa1d2ffe700 (LWP 2544)):
#0  0x00007fa22844e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa224d7eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fa1c4005220, timeout=-1, context=0x7fa1c4000990) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:4103
#2  0x00007fa224d7eebc in g_main_context_iterate (context=context@entry=0x7fa1c4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3803
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1c4000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1c40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1d2ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x19a7a60) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x19a7a60) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x19a7a60) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1d2ffe700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 26 (Thread 0x7fa1d1ffd700 (LWP 2545)):
#0  0x00007fa224dc3789 in g_mutex_lock (mutex=mutex@entry=0x7fa1c8000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1342
#1  0x00007fa224d7eea2 in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fa1c8005220, timeout=-1, context=0x7fa1c8000990) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:4098
#2  0x00007fa224d7eea2 in g_main_context_iterate (context=context@entry=0x7fa1c8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3803
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1c8000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1c80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1d1ffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x1aa3230) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x1aa3230) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x1aa3230) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1d1ffd700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 25 (Thread 0x7fa1d0ffc700 (LWP 2546)):
#0  0x00007fa224dc3789 in g_mutex_lock (mutex=mutex@entry=0x7fa1bc000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1342
#1  0x00007fa224d7e641 in g_main_context_query (context=context@entry=0x7fa1bc000990, max_priority=2147483647, timeout=timeout@entry=0x7fa1d0ffbca4, fds=fds@entry=0x7fa1bc005420, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3512
#2  0x00007fa224d7ee37 in g_main_context_iterate (context=context@entry=0x7fa1bc000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3790
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa1bc000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1bc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1d0ffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x1ba4e50) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x1ba4e50) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x1ba4e50) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1d0ffc700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 24 (Thread 0x7fa1c37ff700 (LWP 2547)):
#0  0x00007fa227cdada0 in pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fa22c9fe644 in QTWTF::TCMalloc_PageHeap::scavengerThread() (this=0x7fa22caeff40 <QTWTF::pageheap_memory>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fa22c9fe689 in QTWTF::TCMalloc_PageHeap::runScavengerThread(void*) (context=<optimized out>) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fa227cd56aa in start_thread (arg=0x7fa1c37ff700) at pthread_create.c:333
#4  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 23 (Thread 0x7fa1c2ffe700 (LWP 2548)):
#0  0x00007fa224dc3789 in g_mutex_lock (mutex=mutex@entry=0x7fa138000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1342
#1  0x00007fa224d7e8cc in g_main_context_check (context=context@entry=0x7fa138000990, max_priority=2147483647, fds=fds@entry=0x7fa138002e20, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3651
#2  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa138000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa138000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1380008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1c2ffdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x1c73ac0) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x1c73ac0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x1c73ac0) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa1c2ffe700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 22 (Thread 0x7fa1c0caf700 (LWP 2554)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa130000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7ed6d in g_main_context_iterate (context=context@entry=0x7fa130000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3756
#2  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa130000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#3  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1300008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa1c0caede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x1df1350) at thread/qthread.cpp:503
#6  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x1df1350) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x1df1350) at thread/qthread_unix.cpp:337
#8  0x00007fa227cd56aa in start_thread (arg=0x7fa1c0caf700) at pthread_create.c:333
#9  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 21 (Thread 0x7fa137370700 (LWP 2555)):
#0  0x00007fa228467c3f in __libc_enable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:65
#1  0x00007fa22844e8d2 in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0x00007fa224d7eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fa12c005330, timeout=-1, context=0x7fa12c000990) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:4103
#3  0x00007fa224d7eebc in g_main_context_iterate (context=context@entry=0x7fa12c000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3803
#4  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa12c000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#5  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa12c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa13736fd90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x1f7a850) at thread/qthread.cpp:503
#8  0x00007fa22d567b56 in QQuickPixmapReader::run() (this=0x1f7a850) at util/qquickpixmapcache.cpp:714
#9  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x1f7a850) at thread/qthread_unix.cpp:337
#10 0x00007fa227cd56aa in start_thread (arg=0x7fa137370700) at pthread_create.c:333
#11 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 20 (Thread 0x7fa13586f700 (LWP 2584)):
#0  0x00007fa228d65f30 in socketNotifierSourcePrepare(GSource*, gint*) (timeout=timeout@entry=0x7fa13586ec14) at kernel/qeventdispatcher_glib.cpp:64
#1  0x00007fa224d7e3fd in g_main_context_prepare (context=context@entry=0x7fa124000990, priority=priority@entry=0x7fa13586eca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3410
#2  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa124000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa124000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1240008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa13586ede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x33bcf20) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x33bcf20) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x33bcf20) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa13586f700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 19 (Thread 0x7fa128f48700 (LWP 2861)):
#0  0x00007fa224dc3789 in g_mutex_lock (mutex=mutex@entry=0x7fa120000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1342
#1  0x00007fa224d7e641 in g_main_context_query (context=context@entry=0x7fa120000990, max_priority=2147483647, timeout=timeout@entry=0x7fa128f47ca4, fds=fds@entry=0x7fa120005330, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3512
#2  0x00007fa224d7ee37 in g_main_context_iterate (context=context@entry=0x7fa120000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3790
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa120000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1200008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa128f47de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x41931c0) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x41931c0) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x41931c0) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa128f48700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 18 (Thread 0x7fa11f7ff700 (LWP 2862)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa118000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7e3f0 in g_main_context_prepare (context=context@entry=0x7fa118000990, priority=priority@entry=0x7fa11f7feca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3408
#2  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa118000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa118000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa11f7fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x4422a70) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x4422a70) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4422a70) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa11f7ff700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 17 (Thread 0x7fa11e7fe700 (LWP 2863)):
#0  0x00007fa22844e8e1 in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa224d7eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fa110005020, timeout=-1, context=0x7fa110000990) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:4103
#2  0x00007fa224d7eebc in g_main_context_iterate (context=context@entry=0x7fa110000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3803
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa110000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1100008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa11e7fdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x435f040) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x435f040) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x435f040) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa11e7fe700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 16 (Thread 0x7fa11d7fd700 (LWP 2864)):
#0  0x00007fa22844a49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa224dc22f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fa11d7fcbd0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fa224dc22f0 in g_wakeup_acknowledge (wakeup=0x7fa1100043b0) at /build/buildd/glib2.0-2.44.0/./glib/gwakeup.c:210
#3  0x00007fa224d7e96c in g_main_context_check (context=context@entry=0x7fa114000990, max_priority=2147483647, fds=fds@entry=0x7fa114005220, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3600
#4  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa114000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#5  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa114000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#6  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1140008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa11d7fcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x4523420) at thread/qthread.cpp:503
#9  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x4523420) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4523420) at thread/qthread_unix.cpp:337
#11 0x00007fa227cd56aa in start_thread (arg=0x7fa11d7fd700) at pthread_create.c:333
#12 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 15 (Thread 0x7fa10ffff700 (LWP 2866)):
#0  0x00007fa228d64bc3 in QTimerInfoList::timerWait(timespec&) (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:96
#1  0x00007fa228d64bc3 in QTimerInfoList::timerWait(timespec&) (this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qlist.h:282
#2  0x00007fa228d64bc3 in QTimerInfoList::timerWait(timespec&) (this=0x7fa108003000, tm=...) at kernel/qtimerinfo_unix.cpp:384
#3  0x00007fa228d6603e in timerSourcePrepare(GSource*, gint*) (timeout=0x7fa10fffec14, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:127
#4  0x00007fa228d6603e in timerSourcePrepare(GSource*, gint*) (source=<optimized out>, timeout=timeout@entry=0x7fa10fffec14) at kernel/qeventdispatcher_glib.cpp:160
#5  0x00007fa224d7e3fd in g_main_context_prepare (context=context@entry=0x7fa108000990, priority=priority@entry=0x7fa10fffeca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3410
#6  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa108000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#7  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa108000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#8  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1080008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#9  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa10fffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#10 0x00007fa228acab44 in QThread::exec() (this=this@entry=0x4606490) at thread/qthread.cpp:503
#11 0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x4606490) at qml/ftw/qqmlthread.cpp:141
#12 0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4606490) at thread/qthread_unix.cpp:337
#13 0x00007fa227cd56aa in start_thread (arg=0x7fa10ffff700) at pthread_create.c:333
#14 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 14 (Thread 0x7fa10effe700 (LWP 2867)):
#0  0x00007fa228aa60f0 in g_main_context_iteration@plt () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1000008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#2  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa10effdde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#3  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x46ff550) at thread/qthread.cpp:503
#4  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x46ff550) at qml/ftw/qqmlthread.cpp:141
#5  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x46ff550) at thread/qthread_unix.cpp:337
#6  0x00007fa227cd56aa in start_thread (arg=0x7fa10effe700) at pthread_create.c:333
#7  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 13 (Thread 0x7fa10dffd700 (LWP 2868)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa104000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7ee76 in g_main_context_iterate (context=context@entry=0x7fa104000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3810
#2  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa104000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#3  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa1040008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa10dffcde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x17b76f0) at thread/qthread.cpp:503
#6  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x17b76f0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x17b76f0) at thread/qthread_unix.cpp:337
#8  0x00007fa227cd56aa in start_thread (arg=0x7fa10dffd700) at pthread_create.c:333
#9  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 12 (Thread 0x7fa10cffc700 (LWP 2870)):
#0  0x00007fa228d66007 in timerSourcePrepare(GSource*, gint*) (timeout=0x7fa10cffbc14, src=0x7fa0f8002da0) at kernel/qeventdispatcher_glib.cpp:126
#1  0x00007fa228d66007 in timerSourcePrepare(GSource*, gint*) (source=0x7fa0f8002da0, timeout=timeout@entry=0x7fa10cffbc14) at kernel/qeventdispatcher_glib.cpp:160
#2  0x00007fa224d7e3fd in g_main_context_prepare (context=context@entry=0x7fa0f8000990, priority=priority@entry=0x7fa10cffbca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3410
#3  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa0f8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#4  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0f8000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#5  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#6  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa10cffbde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#7  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x48e0010) at thread/qthread.cpp:503
#8  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x48e0010) at qml/ftw/qqmlthread.cpp:141
#9  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x48e0010) at thread/qthread_unix.cpp:337
#10 0x00007fa227cd56aa in start_thread (arg=0x7fa10cffc700) at pthread_create.c:333
#11 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 11 (Thread 0x7fa0fdb7e700 (LWP 2920)):
#0  0x00007fa228d6626f in idleTimerSourceCheck(GSource*) (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:219
#1  0x00007fa224d7e8c1 in g_main_context_check (context=context@entry=0x7fa0f4000990, max_priority=2147483647, fds=fds@entry=0x7fa0f4006ec0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3649
#2  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa0f4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0f4000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0fdb7ddc0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:503
#7  0x00007fa0feb76cf7 in KCupsConnection::run() () at /usr/lib/x86_64-linux-gnu/libkcupslib.so
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4d22d90) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa0fdb7e700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 10 (Thread 0x7fa0fcd6b700 (LWP 2921)):
#0  0x00007fa224dc3789 in g_mutex_lock (mutex=mutex@entry=0x7fa0ec000990) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1342
#1  0x00007fa224d7e641 in g_main_context_query (context=context@entry=0x7fa0ec000990, max_priority=2147483647, timeout=timeout@entry=0x7fa0fcd6aca4, fds=fds@entry=0x7fa0ec005020, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3512
#2  0x00007fa224d7ee37 in g_main_context_iterate (context=context@entry=0x7fa0ec000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3790
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0ec000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0ec0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0fcd6ade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x4d68640) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x4d68640) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4d68640) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa0fcd6b700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 9 (Thread 0x7fa0f37ff700 (LWP 2922)):
#0  0x00007fa228ac79ca in QMutex::lock() (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x4e585c8: 0x1) at ../../include/QtCore/../../src/corelib/arch/qatomic_x86.h:259
#1  0x00007fa228ac79ca in QMutex::lock() (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, _q_value=@0x4e585c8: 0x1) at ../../include/QtCore/../../src/corelib/thread/qgenericatomic.h:166
#2  0x00007fa228ac79ca in QMutex::lock() (currentValue=<synthetic pointer>, newValue=0x1, expectedValue=0x0, this=0x4e585c8, this@entry=0x1) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:270
#3  0x00007fa228ac79ca in QMutex::lock() (current=<synthetic pointer>, this=0x4e585c8, this@entry=0x1) at thread/qmutex.h:82
#4  0x00007fa228ac79ca in QMutex::lock() (this=this@entry=0x4e585c8) at thread/qmutex.cpp:212
#5  0x00007fa228d661db in postEventSourcePrepare(GSource*, gint*) (m=0x4e585c8, this=<synthetic pointer>) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:128
#6  0x00007fa228d661db in postEventSourcePrepare(GSource*, gint*) (this=0x4e585a0) at ../../include/QtCore/5.4.1/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:243
#7  0x00007fa228d661db in postEventSourcePrepare(GSource*, gint*) (s=0x7fa0e8002e00, timeout=timeout@entry=0x7fa0f37fec14) at kernel/qeventdispatcher_glib.cpp:254
#8  0x00007fa224d7e3fd in g_main_context_prepare (context=context@entry=0x7fa0e8000990, priority=priority@entry=0x7fa0f37feca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3410
#9  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa0e8000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#10 0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0e8000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#11 0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#12 0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0f37fede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#13 0x00007fa228acab44 in QThread::exec() (this=this@entry=0x4e583f0) at thread/qthread.cpp:503
#14 0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x4e583f0) at qml/ftw/qqmlthread.cpp:141
#15 0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4e583f0) at thread/qthread_unix.cpp:337
#16 0x00007fa227cd56aa in start_thread (arg=0x7fa0f37ff700) at pthread_create.c:333
#17 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fa0f26fb700 (LWP 2924)):
#0  0x00007fa224d7e901 in g_main_context_check (context=context@entry=0x7fa0e0000990, max_priority=2147483647, fds=fds@entry=0x7fa0e0007420, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3693
#1  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa0e0000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#2  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0e0000990, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#3  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0e00008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0f26fade0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x4d14fd0) at thread/qthread.cpp:503
#6  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x4d14fd0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x4d14fd0) at thread/qthread_unix.cpp:337
#8  0x00007fa227cd56aa in start_thread (arg=0x7fa0f26fb700) at pthread_create.c:333
#9  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fa0f15f8700 (LWP 2925)):
#0  0x00007fa224d7befe in g_source_iter_next (iter=iter@entry=0x7fa0f15f7c20, source=source@entry=0x7fa0f15f7c18) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:929
#1  0x00007fa224d7e39b in g_main_context_prepare (context=context@entry=0x547a1c0, priority=priority@entry=0x7fa0f15f7ca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3388
#2  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x547a1c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x547a1c0, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x5476c80, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0f15f7de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x5477050) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x5477050) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x5477050) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa0f15f8700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fa0e5df4700 (LWP 3001)):
#0  0x00007fa224dc37a4 in g_mutex_unlock (mutex=0x7fa0e00075c0) at /build/buildd/glib2.0-2.44.0/./glib/gthread-posix.c:1354
#1  0x00007fa224d7e3f0 in g_main_context_prepare (context=context@entry=0x7fa0e00075c0, priority=priority@entry=0x7fa0e5df3ca0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3408
#2  0x00007fa224d7ede8 in g_main_context_iterate (context=context@entry=0x7fa0e00075c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3788
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0e00075c0, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0e00074f0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0e5df3de0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x58e3b20) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x58e3b20) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x58e3b20) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa0e5df4700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fa0dffff700 (LWP 18894)):
#0  0x00007fa22844a49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa224dc22f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fa0dfffebd0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fa224dc22f0 in g_wakeup_acknowledge (wakeup=0xda1c70) at /build/buildd/glib2.0-2.44.0/./glib/gwakeup.c:210
#3  0x00007fa224d7e96c in g_main_context_check (context=context@entry=0x7fa0e80a92e0, max_priority=2147483647, fds=fds@entry=0x7fa0e80bda30, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3600
#4  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa0e80a92e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#5  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0e80a92e0, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#6  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0e83a7510, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0dfffede0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x5bbf850) at thread/qthread.cpp:503
#9  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x5bbf850) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x5bbf850) at thread/qthread_unix.cpp:337
#11 0x00007fa227cd56aa in start_thread (arg=0x7fa0dffff700) at pthread_create.c:333
#12 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fa0de5ec700 (LWP 18895)):
#0  0x00007fa22844e8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa224d7eebc in g_main_context_iterate (priority=2147483647, n_fds=1, fds=0x7fa0ec009600, timeout=-1, context=0x7fa0ec0051c0) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:4103
#2  0x00007fa224d7eebc in g_main_context_iterate (context=context@entry=0x7fa0ec0051c0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3803
#3  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0ec0051c0, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#4  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0ec0050f0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#5  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0de5ebde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#6  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x700cc60) at thread/qthread.cpp:503
#7  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x700cc60) at qml/ftw/qqmlthread.cpp:141
#8  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x700cc60) at thread/qthread_unix.cpp:337
#9  0x00007fa227cd56aa in start_thread (arg=0x7fa0de5ec700) at pthread_create.c:333
#10 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fa0dc74d700 (LWP 22453)):
#0  0x00007fa224d7e9fc in g_main_context_dispatch (context=context@entry=0x7fa0f4013e10) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3732
#1  0x00007fa224d7ef20 in g_main_context_iterate (context=context@entry=0x7fa0f4013e10, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3808
#2  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0f4013e10, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#3  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0f4014d40, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0dc74cde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x6ff8ca0) at thread/qthread.cpp:503
#6  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x6ff8ca0) at qml/ftw/qqmlthread.cpp:141
#7  0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x6ff8ca0) at thread/qthread_unix.cpp:337
#8  0x00007fa227cd56aa in start_thread (arg=0x7fa0dc74d700) at pthread_create.c:333
#9  0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fa0db6ec700 (LWP 22455)):
#0  0x00007fa22844a49d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007fa224dc22f0 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fa0db6ebbd0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#2  0x00007fa224dc22f0 in g_wakeup_acknowledge (wakeup=0x7fa0f4016a30) at /build/buildd/glib2.0-2.44.0/./glib/gwakeup.c:210
#3  0x00007fa224d7e96c in g_main_context_check (context=context@entry=0x7fa0f8163b10, max_priority=2147483647, fds=fds@entry=0x7fa0f80d98f0, n_fds=n_fds@entry=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3600
#4  0x00007fa224d7ee60 in g_main_context_iterate (context=context@entry=0x7fa0f8163b10, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3805
#5  0x00007fa224d7efcc in g_main_context_iteration (context=0x7fa0f8163b10, may_block=1) at /build/buildd/glib2.0-2.44.0/./glib/gmain.c:3869
#6  0x00007fa228d66c6c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fa0f800a540, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#7  0x00007fa228d0b3e2 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fa0db6ebde0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fa228acab44 in QThread::exec() (this=this@entry=0x73e9a30) at thread/qthread.cpp:503
#9  0x00007fa22a858f65 in QQmlThreadPrivate::run() (this=0x73e9a30) at qml/ftw/qqmlthread.cpp:141
#10 0x00007fa228acfb0e in QThreadPrivate::start(void*) (arg=0x73e9a30) at thread/qthread_unix.cpp:337
#11 0x00007fa227cd56aa in start_thread (arg=0x7fa0db6ec700) at pthread_create.c:333
#12 0x00007fa228459eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fa22d8a67c0 (LWP 2495)):
[KCrash Handler]
#6  0x00007fa22a7b7dd0 in QQmlVMEMetaObject::writeVarProperty(int, QV4::ValueRef) (this=<optimized out>) at ../../include/QtQml/5.4.1/QtQml/private/../../../../../src/qml/jsruntime/qv4value_inl_p.h:65
#7  0x00007fa22a7b7dd0 in QQmlVMEMetaObject::writeVarProperty(int, QV4::ValueRef) (this=<optimized out>) at ../../include/QtQml/5.4.1/QtQml/private/../../../../../src/qml/jsruntime/qv4value_inl_p.h:276
#8  0x00007fa22a7b7dd0 in QQmlVMEMetaObject::writeVarProperty(int, QV4::ValueRef) (v=...) at ../../include/QtQml/5.4.1/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:558
#9  0x00007fa22a7b7dd0 in QQmlVMEMetaObject::writeVarProperty(int, QV4::ValueRef) (v=<optimized out>, scope=<synthetic pointer>, this=<synthetic pointer>) at ../../include/QtQml/5.4.1/QtQml/private/../../../../../src/qml/jsruntime/qv4scopedvalue_p.h:304
#10 0x00007fa22a7b7dd0 in QQmlVMEMetaObject::writeVarProperty(int, QV4::ValueRef) (this=0x3d88c50, id=1, value=...) at qml/qqmlvmemetaobject.cpp:1030
#11 0x00007fa22a7d2ab4 in QQmlPropertyPrivate::writeBinding(QObject*, QQmlPropertyData const&, QQmlContextData*, QQmlJavaScriptExpression*, QV4::ValueRef, bool, QFlags<QQmlPropertyPrivate::WriteFlag>) (object=0x0, core=..., context=0x381ff80, expression=0x3d89700, result=..., isUndefined=false, flags=...) at qml/qqmlproperty.cpp:1539
#12 0x00007fa22a84751c in QQmlBinding::update(QFlags<QQmlPropertyPrivate::WriteFlag>) (this=0x3d896e0, flags=...) at qml/qqmlbinding.cpp:224
#13 0x00007fa22a847c7e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) (this=<optimized out>) at qml/qqmlbinding_p.h:97
#14 0x00007fa22a847c7e in QQmlBinding::expressionChanged(QQmlJavaScriptExpression*) (e=<optimized out>) at qml/qqmlbinding.cpp:285
#15 0x00007fa22a821497 in QQmlNotifier::emitNotify(QQmlNotifierEndpoint*, void**) (endpoint=0x3d8a980, a=a@entry=0x7ffce96cee20) at qml/qqmlnotifier.cpp:73
#16 0x00007fa22a7be10c in QQmlData::signalEmitted(QAbstractDeclarativeData*, QObject*, int, void**) (object=0x3d69d20, index=30, a=0x7ffce96cee20) at qml/qqmlengine.cpp:716
#17 0x00007fa228d3e141 in QMetaObject::activate(QObject*, int, int, void**) (sender=0x3d69d20, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=0x7ffce96cee20) at kernel/qobject.cpp:3603
#18 0x00007fa22a7b6e1f in QQmlVMEMetaObject::metaCall(QMetaObject::Call, int, void**) (this=0x3829d80, c=QMetaObject::InvokeMetaMethod, _id=40, a=0x7ffce96cee20) at qml/qqmlvmemetaobject.cpp:914
#19 0x00007fa22a79b36d in CallMethod(QObject*, int, int, int, int*, QV8Engine*, QV4::CallData*) (object=0x0, index=4929576, returnType=43, argCount=0, argTypes=0x7fa1f8ffd0e0, engine=0x0, callArgs=0x7fa1f8ffd088) at jsruntime/qv4qobjectwrapper.cpp:1170
#20 0x00007fa22a79d995 in CallPrecise(QObject*, QQmlPropertyData const&, QV8Engine*, QV4::CallData*) (object=0x3d69d20, data=..., engine=0x13db0d0, callArgs=0x7fa1f8ffd088) at jsruntime/qv4qobjectwrapper.cpp:1408
#21 0x00007fa22a79e0b3 in QV4::QObjectMethod::callInternal(QV4::CallData*) (this=<optimized out>, callData=0x7fa1f8ffd088) at jsruntime/qv4qobjectwrapper.cpp:1889
#22 0x00007fa22a7a98f2 in QV4::Runtime::callActivationProperty(QV4::ExecutionContext*, QV4::String*, QV4::CallData*) (d=0x7fa1f8ffd088, this=<optimized out>) at jsruntime/qv4object_p.h:278
#23 0x00007fa22a7a98f2 in QV4::Runtime::callActivationProperty(QV4::ExecutionContext*, QV4::String*, QV4::CallData*) (context=<optimized out>, name=0x7fa200423790, callData=0x7fa1f8ffd088) at jsruntime/qv4runtime.cpp:908
#24 0x00007fa1c0045da6 in  ()
#25 0x00007fa2004ae000 in  ()
#26 0x00007fa22a759936 in QV4::SimpleScriptFunction::call(QV4::Managed*, QV4::CallData*) (that=0x7fa200424d50, callData=<optimized out>) at jsruntime/qv4functionobject.cpp:512
#27 0x2f690276173ce800 in  ()
#28 0x00007ffce96cf500 in  ()
#29 0x00007fa2004ae000 in  ()
#30 0x00000000013db140 in  ()
#31 0x00007fa1f8ffd048 in  ()
#32 0x00007ffce96cf9a8 in  ()
#33 0x0000000000000000 in  ()

Possible duplicates by query: bug 346769, bug 346650, bug 346358, bug 345722, bug 345141.

Reported using DrKonqi
Comment 1 Laurent Bonnaud 2015-05-05 15:53:37 UTC 
I am using the "System Load Viewer" applet if that matters to check if this bug is really a duplicate of bug #345141.
Comment 2 David Edmundson 2015-05-05 16:13:02 UTC 
backtraes match

*** This bug has been marked as a duplicate of bug 345141 ***