Bug 346999

Application: systemsettings5 (5.3.0)

Qt Version: 5.4.1
Operating System: Linux 3.19.0-16-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
went to systemsettings and tried to change gtk default icon theme

The crash can be reproduced every time.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f633464e780 (LWP 2885))]

Thread 3 (Thread 0x7f6321bbd700 (LWP 2886)):
#0  0x00007f6330dbc8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f632f0d6b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f632f0d864f in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f632497b099 in QXcbEventReader::run (this=0x1ede970) at qxcbconnection.cpp:1105
#4  0x00007f633143db0e in QThreadPrivate::start (arg=0x1ede970) at thread/qthread_unix.cpp:337
#5  0x00007f632dff06aa in start_thread (arg=0x7f6321bbd700) at pthread_create.c:333
#6  0x00007f6330dc7eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f62ff4a1700 (LWP 2903)):
#0  0x00007f6330dbc8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f632dad1ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f632dad1fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f63316d4c6c in QEventDispatcherGlib::processEvents (this=0x7f62f40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#4  0x00007f63316793e2 in QEventLoop::exec (this=this@entry=0x7f62ff4a0e40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#5  0x00007f6331438b44 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:503
#6  0x00007f633143db0e in QThreadPrivate::start (arg=0x30622e0) at thread/qthread_unix.cpp:337
#7  0x00007f632dff06aa in start_thread (arg=0x7f62ff4a1700) at pthread_create.c:333
#8  0x00007f6330dc7eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f633464e780 (LWP 2885)):
[KCrash Handler]
#6  0x00007f6330324f97 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007f63302cf151 in QV4::ExecutionEngine::~ExecutionEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f63304070d5 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007f63304072b9 in QV8Engine::~QV8Engine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f633026c061 in QJSEngine::~QJSEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#11 0x00007f63303693c5 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007f6330369499 in QQmlEngine::~QQmlEngine() () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#13 0x00007f630a0b9242 in cleanup (pointer=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:54
#14 reset (other=0x0, this=0x7f630a348708 <Aurorae::Helper::instance()::s_helper+8>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qscopedpointer.h:149
#15 Aurorae::Helper::unref (this=0x7f630a348700 <Aurorae::Helper::instance()::s_helper>) at ../../../../clients/aurorae/src/aurorae.cpp:113
#16 0x00007f630a0bd3f8 in unref (this=<optimized out>) at ../../../../clients/aurorae/src/aurorae.cpp:271
#17 Aurorae::Decoration::~Decoration (this=0x2855190, __in_chrg=<optimized out>) at ../../../../clients/aurorae/src/aurorae.cpp:266
#18 0x00007f630a0bd419 in Aurorae::Decoration::~Decoration (this=0x2855190, __in_chrg=<optimized out>) at ../../../../clients/aurorae/src/aurorae.cpp:277
#19 0x00007f63316ad778 in QObject::event (this=0x2855190, e=<optimized out>) at kernel/qobject.cpp:1236
#20 0x00007f6332467b2c in QApplicationPrivate::notify_helper (this=0x1eb0550, receiver=0x2855190, e=0x26d5230) at kernel/qapplication.cpp:3720
#21 0x00007f633246d000 in QApplication::notify (this=0x7ffe3b90b690, receiver=0x2855190, e=0x26d5230) at kernel/qapplication.cpp:3503
#22 0x00007f633167bc2b in QCoreApplication::notifyInternal (this=0x7ffe3b90b690, receiver=0x2855190, event=event@entry=0x26d5230) at kernel/qcoreapplication.cpp:935
#23 0x00007f633167dc9b in sendEvent (event=0x26d5230, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#24 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x1eaf770) at kernel/qcoreapplication.cpp:1552
#25 0x00007f633167e298 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1410
#26 0x00007f63316d4843 in postEventSourceDispatch (s=0x1f298f0) at kernel/qeventdispatcher_glib.cpp:271
#27 0x00007f632dad1c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f632dad1f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f632dad1fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f63316d4c57 in QEventDispatcherGlib::processEvents (this=0x1ef9e90, flags=...) at kernel/qeventdispatcher_glib.cpp:418
#31 0x00007f63316793e2 in QEventLoop::exec (this=this@entry=0x7ffe3b90b570, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#32 0x00007f633168102c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#33 0x00007f6331ea231c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1510
#34 0x00007f63324637a5 in QApplication::exec () at kernel/qapplication.cpp:2956
#35 0x000000000040ef5b in main (argc=1, argv=<optimized out>) at ../../app/main.cpp:55

Reported using DrKonqi