Application: kwin_x11 (5.3.2)

Qt Version: 5.4.2
Operating System: Linux 4.1.0-1-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
kwin_x11 crashes in Debian sid.

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  0x00007f37974aa69f in std::_Function_handler<KDecoration2::DecorationButton* (KDecoration2::DecorationButtonType, KDecoration2::Decoration*, QObject*), Breeze::Button* (*)(KDecoration2::DecorationButtonType, KDecoration2::Decoration*, QObject*)>::_M_invoke(std::_Any_data const&, KDecoration2::DecorationButtonType&&, KDecoration2::Decoration*&&, QObject*&&) (__functor=..., __args#0=<unknown type in /usr/lib/debug/.build-id/a2/2b6327a68dde05c5534ab19f5125ea7c275532.debug, CU 0x7053a, DIE 0xb5b09>, __args#1=<optimized out>, __args#2=<unknown type in /usr/lib/debug/.build-id/a2/2b6327a68dde05c5534ab19f5125ea7c275532.debug, CU 0x7053a, DIE 0xb5b13>) at /usr/include/c++/5/functional:1857
#7  0x00007f37b280119c in operator() (__args#2=<optimized out>, __args#1=<optimized out>, __args#0=<optimized out>, this=0x7ffe0ee4d158) at /usr/include/c++/4.9/functional:2439
#8  operator() (__closure=0x7ffe0ee4d140) at ../../src/decorationbuttongroup.cpp:103
#9  KDecoration2::DecorationButtonGroup::DecorationButtonGroup(KDecoration2::DecorationButtonGroup::Position, KDecoration2::Decoration*, std::function<KDecoration2::DecorationButton* (KDecoration2::DecorationButtonType, KDecoration2::Decoration*, QObject*)>) (this=0xe70450, type=KDecoration2::DecorationButtonGroup::Left, parent=<optimized out>, buttonCreator=...) at ../../src/decorationbuttongroup.cpp:108
#10 0x00007f37974a8af0 in Breeze::Decoration::createButtons (this=this@entry=0xe2bf20) at ../../kdecoration/breezedecoration.cpp:344
#11 0x00007f37974aa38c in Breeze::Decoration::init (this=0xe2bf20) at ../../kdecoration/breezedecoration.cpp:192
#12 0x00007f37b56d40b1 in KWin::Decoration::DecorationBridge::createDecoration (this=0xdcc340, client=client@entry=0xe6a740) at ../decorations/decorationbridge.cpp:215
#13 0x00007f37b55bd0e9 in KWin::Client::createDecoration (this=this@entry=0xe6a740, oldgeom=...) at ../client.cpp:430
#14 0x00007f37b55bd4fb in KWin::Client::updateDecoration (this=this@entry=0xe6a740, check_workspace_pos=check_workspace_pos@entry=false, force=force@entry=false) at ../client.cpp:417
#15 0x00007f37b5608482 in KWin::Client::manage (this=this@entry=0xe6a740, w=w@entry=37748833, isMapped=isMapped@entry=true) at ../manage.cpp:382
#16 0x00007f37b55a761d in KWin::Workspace::createClient (this=this@entry=0xdb4860, w=37748833, is_mapped=is_mapped@entry=true) at ../workspace.cpp:446
#17 0x00007f37b55ab171 in KWin::Workspace::init (this=this@entry=0xdb4860) at ../workspace.cpp:332
#18 0x00007f37b55abbcf in KWin::Workspace::Workspace (this=0xdb4860, restore=<optimized out>) at ../workspace.cpp:209
#19 0x00007f37b55e16ae in KWin::Application::createWorkspace (this=this@entry=0x7ffe0ee4e5b0) at ../main.cpp:375
#20 0x00007f37b5d61e39 in operator() (__closure=<synthetic pointer>) at ../main_x11.cpp:173
#21 call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:494
#22 call<QtPrivate::List<>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:551
#23 QtPrivate::QFunctorSlotObject<KWin::ApplicationX11::performStartup()::<lambda()>, 0, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobject_impl.h:192
#24 0x00007f37b40d5187 in call (a=0x7ffe0ee4dd80, r=0xd27da0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#25 QMetaObject::activate (sender=0xd27da0, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3702
#26 0x00007f37b40d5af7 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f37b50ecb80 <KSelectionOwner::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3582
#27 0x00007f37b4edc623 in KSelectionOwner::claimedOwnership (this=<optimized out>) at moc_kselectionowner.cpp:150
#28 0x00007f37b4ec002b in KSelectionOwner::Private::claimSucceeded (this=0xd348c0) at ../../src/kselectionowner.cpp:206
#29 0x00007f37b4ec07b1 in KSelectionOwner::filterEvent (this=0xd27da0, ev_P=<optimized out>) at ../../src/kselectionowner.cpp:424
#30 0x00007f37b40a145f in QAbstractEventDispatcher::filterNativeEvent (this=this@entry=0xd0e110, eventType=..., message=message@entry=0x7f3798001630, result=result@entry=0x7ffe0ee4dec8) at kernel/qabstracteventdispatcher.cpp:460
#31 0x00007f379f531c1e in QXcbConnection::handleXcbEvent (this=this@entry=0xcd7420, event=event@entry=0x7f3798001630) at qxcbconnection.cpp:863
#32 0x00007f379f532c73 in QXcbConnection::processXcbEvents (this=0xcd7420) at qxcbconnection.cpp:1303
#33 0x00007f37b40d61c1 in QObject::event (this=0xcd7420, e=<optimized out>) at kernel/qobject.cpp:1245
#34 0x00007f37b4972b8c in QApplicationPrivate::notify_helper (this=this@entry=0xcd0620, receiver=receiver@entry=0xcd7420, e=e@entry=0x7f3798001680) at kernel/qapplication.cpp:3720
#35 0x00007f37b4978230 in QApplication::notify (this=0x7ffe0ee4e5b0, receiver=0xcd7420, e=0x7f3798001680) at kernel/qapplication.cpp:3503
#36 0x00007f37b40a4a8b in QCoreApplication::notifyInternal (this=0x7ffe0ee4e5b0, receiver=0xcd7420, event=event@entry=0x7f3798001680) at kernel/qcoreapplication.cpp:935
#37 0x00007f37b40a6bc7 in sendEvent (event=0x7f3798001680, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:228
#38 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0xcc0bf0) at kernel/qcoreapplication.cpp:1552
#39 0x00007f37b40f93b2 in QEventDispatcherUNIX::processEvents (this=0xd0e110, flags=flags@entry=...) at kernel/qeventdispatcher_unix.cpp:579
#40 0x00007f379f5868ed in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at eventdispatchers/qunixeventdispatcher.cpp:62
#41 0x00007f37b40a22ca in QEventLoop::exec (this=this@entry=0x7ffe0ee4e4d0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#42 0x00007f37b40a9e3c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1188
#43 0x00007f37b43bf07c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1507
#44 0x00007f37b496f025 in QApplication::exec () at kernel/qapplication.cpp:2956
#45 0x00007f37b5d63320 in kdemain (argc=3, argv=0x7ffe0ee4e718) at ../main_x11.cpp:300
#46 0x00007f37b59d6b45 in __libc_start_main (main=0x4007a0 <main(int, char**)>, argc=3, argv=0x7ffe0ee4e718, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe0ee4e708) at libc-start.c:287
#47 0x00000000004007ce in _start ()

Reported using DrKonqi