segfault when opening 3D view

[implr]

File: inject.bin from "True Detective" CTFZone quals 2018

gdb-peda$ set follow-fork-mode parent
gdb-peda$ r
Starting program: /home/bartek/dev/veles/build/veles 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
[New Thread 0x7fffead24700 (LWP 25927)]
[New Thread 0x7fffce560700 (LWP 26498)]
[New Thread 0x7fffcdb56700 (LWP 26499)]
[New Thread 0x7fffccec0700 (LWP 26517)]
[New Thread 0x7fffbffff700 (LWP 26518)]
[New Thread 0x7fffbf7fe700 (LWP 26519)]
[New Thread 0x7fffbeffd700 (LWP 26520)]
kf5.kio.core: We got some errors while running 'net usershare info'
kf5.kio.core: "mkdir failed on directory /var/lock/samba/msg.lock: Permission denied\n"
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 3086, resource id: 44044640, major code: 40 (TranslateCoords), minor code: 0

Thread 1 "veles" received signal SIGSEGV, Segmentation fault.
[----------------------------------registers-----------------------------------]
RAX: 0x8 
RBX: 0x55555690cf78 --> 0x55555633d490 --> 0x55555653a800 --> 0x0 
RCX: 0x0 
RDX: 0x5555562d9580 --> 0x7ffff7da6390 --> 0x7ffff76f0640 (<QBoxLayoutPrivate::~QBoxLayoutPrivate()>:   lea    rax,[rip+0x6b5d49]        # 0x7ffff7da6390 <_ZTV17QBoxLayoutPrivate+16>)
RSI: 0x0 
RDI: 0x0 
RBP: 0x7fffffffbd20 --> 0x7ffff66d6630 --> 0x7ffff62713e0 (<QEvent::~QEvent()>: mov    rax,QWORD PTR [rip+0x467981]        # 0x7ffff66d8d68)
RSP: 0x7fffffffbd20 --> 0x7ffff66d6630 --> 0x7ffff62713e0 (<QEvent::~QEvent()>: mov    rax,QWORD PTR [rip+0x467981]        # 0x7ffff66d8d68)
RIP: 0x7ffff777f96e (<updateObjects(QList<QObject const*> const&)+238>: test   BYTE PTR [rax+0x20],0x1)
R8 : 0xffffffff 
R9 : 0x0 
R10: 0xffffffff 
R11: 0x555555a23010 --> 0x101040407010504 
R12: 0x55555633d490 --> 0x55555653a800 --> 0x0 
R13: 0x55555690d298 --> 0x0 
R14: 0x555556913f10 --> 0x555556915ac0 --> 0x5555562c0de0 --> 0x7ffff7db7400 --> 0x7ffff7869ef0 (<QScrollBar::metaObject() const>:      mov    rdi,QWORD PTR [rdi+0x8])
R15: 0x7fffffffbdf8 --> 0x555556913ee0 --> 0x600000001
EFLAGS: 0x10206 (carry PARITY adjust zero sign trap INTERRUPT direction overflow)
[-------------------------------------code-------------------------------------]
   0x7ffff777f964 <updateObjects(QList<QObject const*> const&)+228>:    test   r12,r12
   0x7ffff777f967 <updateObjects(QList<QObject const*> const&)+231>:    je     0x7ffff777f958 <updateObjects(QList<QObject const*> const&)+216>
   0x7ffff777f969 <updateObjects(QList<QObject const*> const&)+233>:    mov    rax,QWORD PTR [r12+0x8]
=> 0x7ffff777f96e <updateObjects(QList<QObject const*> const&)+238>:    test   BYTE PTR [rax+0x20],0x1
   0x7ffff777f972 <updateObjects(QList<QObject const*> const&)+242>:    je     0x7ffff777f958 <updateObjects(QList<QObject const*> const&)+216>
   0x7ffff777f974 <updateObjects(QList<QObject const*> const&)+244>:    mov    rdi,r12
   0x7ffff777f977 <updateObjects(QList<QObject const*> const&)+247>:    add    rbx,0x8
   0x7ffff777f97b <updateObjects(QList<QObject const*> const&)+251>:    call   0x7ffff7702b30 <QWidget::style() const>
[------------------------------------stack-------------------------------------]
0000| 0x7fffffffbd20 --> 0x7ffff66d6630 --> 0x7ffff62713e0 (<QEvent::~QEvent()>:        mov    rax,QWORD PTR [rip+0x467981]        # 0x7ffff66d8d68)
0008| 0x7fffffffbd28 --> 0x0 
0016| 0x7fffffffbd30 --> 0x5555562c0064 --> 0xff414141ff414141 
0024| 0x7fffffffbd38 --> 0x117712dd376c7e00 
0032| 0x7fffffffbd40 --> 0x7fffffffbd80 --> 0x5555562ccce0 --> 0x555555a15050 --> 0x555555658420 (<veles::ui::DockWidget::metaObject() const>:  mov    rdi,QWORD PTR [rdi+0x8])
0040| 0x7fffffffbd48 --> 0x7fffffffbd78 --> 0x55555690c7b0 --> 0x1fe00000001 
0048| 0x7fffffffbd50 --> 0x7fffffffbd80 --> 0x5555562ccce0 --> 0x555555a15050 --> 0x555555658420 (<veles::ui::DockWidget::metaObject() const>:  mov    rdi,QWORD PTR [rdi+0x8])
0056| 0x7fffffffbd58 --> 0x5555562ccce0 --> 0x555555a15050 --> 0x555555658420 (<veles::ui::DockWidget::metaObject() const>:     mov    rdi,QWORD PTR [rdi+0x8])
[------------------------------------------------------------------------------]
Legend: code, data, rodata, value
Stopped reason: SIGSEGV
qobject_cast<QWidget*> (o=0x55555633d490) at ../../src/widgets/kernel/qwidget.h:741
741         if (!o || !o->isWidgetType()) return nullptr;
gdb-peda$ bt
#0  qobject_cast<QWidget*> (o=0x55555633d490) at ../../src/widgets/kernel/qwidget.h:741
#1  updateObjects (objects=...) at styles/qstylesheetstyle.cpp:2706
#2  0x00007ffff777fa98 in QStyleSheetStyle::repolish (this=<optimized out>, w=w@entry=0x5555562ccce0) at styles/qstylesheetstyle.cpp:2882
#3  0x00007ffff770c7d0 in QWidget::setStyleSheet (this=this@entry=0x5555562ccce0, styleSheet=...) at kernel/qwidget.cpp:2674
#4  0x00005555556c3d0b in veles::ui::MainWindowWithDetachableDockWidgets::updateActiveDockWidget (this=this@entry=0x555555be2800) at /home/bartek/dev/veles/src/ui/mainwindowwithdetachabledockwidgets.cc:607
#5  0x00005555556c3f39 in veles::ui::MainWindowWithDetachableDockWidgets::updateDocksAndTabs (this=0x555555be2800) at /home/bartek/dev/veles/src/ui/mainwindowwithdetachabledockwidgets.cc:623
#6  0x00007ffff6292e9a in QObject::event (this=this@entry=0x555556592900, e=e@entry=0x5555565e79a0) at kernel/qobject.cpp:1251
#7  0x00007ffff771c253 in QWidget::event (this=this@entry=0x555556592900, event=event@entry=0x5555565e79a0) at kernel/qwidget.cpp:9347
#8  0x00007ffff77f3763 in QDockWidget::event (this=0x555556592900, event=0x5555565e79a0) at widgets/qdockwidget.cpp:1604
#9  0x00007ffff76dce0c in QApplicationPrivate::notify_helper (this=this@entry=0x555555a3d020, receiver=receiver@entry=0x555556592900, e=e@entry=0x5555565e79a0) at kernel/qapplication.cpp:3727
#10 0x00007ffff76e43cf in QApplication::notify (this=0x7fffffffd3d0, receiver=0x555556592900, e=0x5555565e79a0) at kernel/qapplication.cpp:3486
#11 0x00007ffff6268c57 in QCoreApplication::notifyInternal2 (receiver=0x555556592900, event=event@entry=0x5555565e79a0) at kernel/qcoreapplication.cpp:1048
#12 0x00007ffff626bab1 in QCoreApplication::sendEvent (event=0x5555565e79a0, receiver=<optimized out>) at kernel/qcoreapplication.h:234
#13 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0x0, data=0x555555a3d1a0) at kernel/qcoreapplication.cpp:1745
#14 0x00007ffff626c028 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0x0) at kernel/qcoreapplication.cpp:1599
#15 0x00007ffff62bbce3 in postEventSourceDispatch (s=s@entry=0x555555abe160) at kernel/qeventdispatcher_glib.cpp:276
#16 0x00007ffff3320ab7 in g_main_dispatch (context=0x7fffe4004ff0) at /usr/src/debug/dev-libs/glib-2.54.3-r6/glib-2.54.3/glib/gmain.c:3142
#17 g_main_context_dispatch (context=context@entry=0x7fffe4004ff0) at /usr/src/debug/dev-libs/glib-2.54.3-r6/glib-2.54.3/glib/gmain.c:3795
#18 0x00007ffff3320cf0 in g_main_context_iterate (context=context@entry=0x7fffe4004ff0, block=block@entry=0x0, dispatch=dispatch@entry=0x1, self=<optimized out>) at /usr/src/debug/dev-libs/glib-2.54.3-r6/glib-2.54.3/glib/gmain.c:3868
#19 0x00007ffff3320d7c in g_main_context_iteration (context=0x7fffe4004ff0, may_block=may_block@entry=0x0) at /usr/src/debug/dev-libs/glib-2.54.3-r6/glib-2.54.3/glib/gmain.c:3929
#20 0x00007ffff62bbacf in QEventDispatcherGlib::processEvents (this=0x555555abe9d0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#21 0x00007fffed9f8fc1 in QPAEventDispatcherGlib::processEvents (this=0x555555abe9d0, flags=...) at qeventdispatcher_glib.cpp:69
#22 0x00005555556c3788 in veles::ui::MainWindowWithDetachableDockWidgets::updateActiveDockWidget (this=this@entry=0x555555be2800) at /home/bartek/dev/veles/src/ui/mainwindowwithdetachabledockwidgets.cc:563
#23 0x00005555556c3f39 in veles::ui::MainWindowWithDetachableDockWidgets::updateDocksAndTabs (this=0x555555be2800) at /home/bartek/dev/veles/src/ui/mainwindowwithdetachabledockwidgets.cc:623
#24 0x00007ffff6292277 in QtPrivate::QSlotObjectBase::call (a=0x7fffffffc5d0, r=0x555555be2800, this=0x5555565e6f00) at ../../src/corelib/kernel/qobjectdefs_impl.h:376
#25 QMetaObject::activate (sender=sender@entry=0x555556592900, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0x4, argv=argv@entry=0x7fffffffc5d0) at kernel/qobject.cpp:3754
#26 0x00007ffff62927c7 in QMetaObject::activate (sender=sender@entry=0x555556592900, m=m@entry=0x7ffff7db1ac0 <QDockWidget::staticMetaObject>, local_signal_index=local_signal_index@entry=0x4, argv=argv@entry=0x7fffffffc5d0) at kernel/qobject.cpp:3633
#27 0x00007ffff77ef111 in QDockWidget::dockLocationChanged (this=this@entry=0x555556592900, _t1=<optimized out>) at .moc/moc_qdockwidget.cpp:308
#28 0x00007ffff782789c in QMainWindowLayout::tabifyDockWidget (this=0x555555c7d1f0, first=0x555556131540, second=0x555556592900) at widgets/qmainwindowlayout.cpp:1503
#29 0x00007ffff7823110 in QMainWindow::tabifyDockWidget (this=<optimized out>, first=<optimized out>, second=<optimized out>) at widgets/qmainwindow.cpp:1159
#30 0x00005555556c44c0 in veles::ui::MainWindowWithDetachableDockWidgets::addTab (this=this@entry=0x555555be2800, widget=widget@entry=0x555556561b70, title=..., sibling=sibling@entry=0x0) at /home/bartek/dev/veles/src/ui/mainwindowwithdetachabledockwidgets.cc:120
#31 0x00005555556c4aea in veles::ui::MainWindowWithDetachableDockWidgets::createVisualization (this=0x555555be2800, data_model=...) at /home/bartek/dev/veles/src/ui/mainwindowwithdetachabledockwidgets.cc:729
#32 0x00007ffff6292277 in QtPrivate::QSlotObjectBase::call (a=0x7fffffffc7e0, r=0x55555627dbf0, this=0x5555562cd780) at ../../src/corelib/kernel/qobjectdefs_impl.h:376
#33 QMetaObject::activate (sender=sender@entry=0x555556352820, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0x1, argv=argv@entry=0x7fffffffc7e0) at kernel/qobject.cpp:3754
#34 0x00007ffff62927c7 in QMetaObject::activate (sender=sender@entry=0x555556352820, m=m@entry=0x7ffff7da8840 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=0x1, argv=argv@entry=0x7fffffffc7e0) at kernel/qobject.cpp:3633
#35 0x00007ffff76d6702 in QAction::triggered (this=this@entry=0x555556352820, _t1=<optimized out>) at .moc/moc_qaction.cpp:376
#36 0x00007ffff76d8d3c in QAction::activate (this=0x555556352820, event=<optimized out>) at kernel/qaction.cpp:1167
#37 0x00007ffff77c3b9b in QAbstractButtonPrivate::click (this=0x5555563bade0) at widgets/qabstractbutton.cpp:397
#38 0x00007ffff77c3dfd in QAbstractButton::mouseReleaseEvent (this=0x55555633c1a0, e=0x7fffffffccb0) at widgets/qabstractbutton.cpp:1011
#39 0x00007ffff78b26ca in QToolButton::mouseReleaseEvent (this=<optimized out>, e=<optimized out>) at widgets/qtoolbutton.cpp:622
#40 0x00007ffff771bb48 in QWidget::event (this=0x55555633c1a0, event=0x7fffffffccb0) at kernel/qwidget.cpp:9281
#41 0x00007ffff77c4fbb in QAbstractButton::event (this=this@entry=0x55555633c1a0, e=e@entry=0x7fffffffccb0) at widgets/qabstractbutton.cpp:968
#42 0x00007ffff78b2764 in QToolButton::event (this=0x55555633c1a0, event=0x7fffffffccb0) at widgets/qtoolbutton.cpp:985
#43 0x00007ffff76dce0c in QApplicationPrivate::notify_helper (this=this@entry=0x555555a3d020, receiver=receiver@entry=0x55555633c1a0, e=e@entry=0x7fffffffccb0) at kernel/qapplication.cpp:3727
#44 0x00007ffff76e4f67 in QApplication::notify (this=<optimized out>, receiver=0x55555633c1a0, e=0x7fffffffccb0) at kernel/qapplication.cpp:3203
#45 0x00007ffff6268c57 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x55555633c1a0, event=event@entry=0x7fffffffccb0) at kernel/qcoreapplication.cpp:1048
#46 0x00007ffff76e38b2 in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:234
#47 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x55555633c1a0, event=event@entry=0x7fffffffccb0, alienWidget=alienWidget@entry=0x55555633c1a0, nativeWidget=0x555555be2800, buttonDown=buttonDown@entry=0x7ffff7dd7870 <qt_button_down>, lastMouseReceiver=..., spontaneous=0x1)
    at kernel/qapplication.cpp:2695
#48 0x00007ffff7736b43 in QWidgetWindow::handleMouseEvent (this=this@entry=0x5555561d0a10, event=event@entry=0x7fffffffd090) at kernel/qwidgetwindow.cpp:659
#49 0x00007ffff7739109 in QWidgetWindow::event (this=0x5555561d0a10, event=0x7fffffffd090) at kernel/qwidgetwindow.cpp:281
#50 0x00007ffff76dce0c in QApplicationPrivate::notify_helper (this=this@entry=0x555555a3d020, receiver=receiver@entry=0x5555561d0a10, e=e@entry=0x7fffffffd090) at kernel/qapplication.cpp:3727
#51 0x00007ffff76e43cf in QApplication::notify (this=0x7fffffffd3d0, receiver=0x5555561d0a10, e=0x7fffffffd090) at kernel/qapplication.cpp:3486
#52 0x00007ffff6268c57 in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x5555561d0a10, event=event@entry=0x7fffffffd090) at kernel/qcoreapplication.cpp:1048
#53 0x00007ffff6b67c23 in QCoreApplication::sendSpontaneousEvent (event=0x7fffffffd090, receiver=0x5555561d0a10) at ../../src/corelib/kernel/qcoreapplication.h:237
#54 QGuiApplicationPrivate::processMouseEvent (e=0x55555655ec30) at kernel/qguiapplication.cpp:2081
#55 0x00007ffff6b69975 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x55555655ec30) at kernel/qguiapplication.cpp:1816
#56 0x00007ffff6b44d6b in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:1032
#57 0x00007fffed9f8fcb in QPAEventDispatcherGlib::processEvents (this=0x555555abe9d0, flags=...) at qeventdispatcher_glib.cpp:70
#58 0x00007ffff6267a4a in QEventLoop::exec (this=this@entry=0x7fffffffd300, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#59 0x00007ffff6270430 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#60 0x0000555555642b99 in main (argc=<optimized out>, argc@entry=0x1, argv=argv@entry=0x7fffffffd538) at /home/bartek/dev/veles/src/ui/main.cc:82
#61 0x00007ffff52e19f7 in __libc_start_main (main=0x555555642800 <main(int, char**)>, argc=0x1, argv=0x7fffffffd538, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffd528) at ../csu/libc-start.c:308
#62 0x00005555556441ea in _start () at /home/bartek/dev/veles/src/ui/main.cc:58

Linux IHM 4.14.16-gentoo #2 SMP Sat Feb 3 03:38:21 CET 2018 x86_64 Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz GenuineIntel GNU/Linux

# eix -I --format '<installedversions:NAMEVERSION>'  'dev-qt/qt*'  
dev-qt/qt3support-4.8.7
dev-qt/qtchooser-0_p20170803
dev-qt/qtconcurrent-5.11.1
dev-qt/qtcore-4.8.7-r4
dev-qt/qtcore-5.11.1
dev-qt/qtdbus-5.11.1
dev-qt/qtdeclarative-5.11.1
dev-qt/qtgraphicaleffects-5.11.1
dev-qt/qtgui-4.8.7
dev-qt/qtgui-5.11.1
dev-qt/qtimageformats-5.11.1
dev-qt/qtmultimedia-5.11.1
dev-qt/qtnetwork-5.11.1
dev-qt/qtopengl-5.11.1
dev-qt/qtpaths-5.11.1
dev-qt/qtprintsupport-5.11.1
dev-qt/qtquickcontrols-5.11.1
dev-qt/qtquickcontrols2-5.11.1
dev-qt/qtscript-4.8.7
dev-qt/qtscript-5.11.1
dev-qt/qtsensors-5.11.1
dev-qt/qtsql-4.8.7-r1
dev-qt/qtsql-5.11.1-r1
dev-qt/qtsvg-5.11.1
dev-qt/qttest-5.11.1
dev-qt/qttranslations-4.8.7
dev-qt/qtvirtualkeyboard-5.11.1
dev-qt/qtwayland-5.11.1
dev-qt/qtwebchannel-5.11.1
dev-qt/qtwebengine-5.11.1
dev-qt/qtwebkit-5.212.0_pre20180120
dev-qt/qtwidgets-5.11.1
dev-qt/qtx11extras-5.11.1
dev-qt/qtxml-5.11.1
dev-qt/qtxmlpatterns-4.8.7
dev-qt/qtxmlpatterns-5.11.1

$ glxinfo | grep string
server glx vendor string: SGI
server glx version string: 1.4
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
OpenGL vendor string: X.Org
OpenGL renderer string: AMD CYPRESS (DRM 2.50.0 / 4.14.16-gentoo, LLVM 6.0.1)
OpenGL core profile version string: 4.3 (Core Profile) Mesa 18.1.4
OpenGL core profile shading language version string: 4.30
OpenGL version string: 3.1 Mesa 18.1.4
OpenGL shading language version string: 1.40
OpenGL ES profile version string: OpenGL ES 3.1 Mesa 18.1.4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.10

[tonylambiris]

Using latest git commit:

Thread 1.1 "veles" received signal SIGSEGV, Segmentation fault.
0x00007ffff7af9375 in ?? () from /usr/lib/libQt5Widgets.so.5
=> 0x00007ffff7af9375:	f6 40 20 01	test   BYTE PTR [rax+0x20],0x1
bt
#0  0x00007ffff7af9375 in  () at /usr/lib/libQt5Widgets.so.5
#1  0x00007ffff7af9494 in  () at /usr/lib/libQt5Widgets.so.5
#2  0x00005555556dc62a in veles::ui::MainWindowWithDetachableDockWidgets::updateActiveDockWidget() ()
#3  0x00005555556dcc5c in veles::ui::MainWindowWithDetachableDockWidgets::updateDocksAndTabs() ()
#4  0x00007ffff6d28832 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#5  0x00007ffff7a92b0c in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#6  0x00007ffff7b6d54c in QDockWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#7  0x00007ffff7a52e14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#8  0x00007ffff7a5a6e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#9  0x00007ffff6cfe119 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#10 0x00007ffff6d011ac in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#11 0x00007ffff6d51ec4 in  () at /usr/lib/libQt5Core.so.5
#12 0x00007ffff52b1ca7 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#13 0x00007ffff52b1f59 in  () at /usr/lib/libglib-2.0.so.0
#14 0x00007ffff52b1fee in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#15 0x00007ffff6d5152e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#16 0x00007ffff1910312 in  () at /usr/lib/libQt5XcbQpa.so.5
#17 0x00005555556dc0de in veles::ui::MainWindowWithDetachableDockWidgets::updateActiveDockWidget() ()
#18 0x00005555556dcc5c in veles::ui::MainWindowWithDetachableDockWidgets::updateDocksAndTabs() ()
#19 0x00007ffff6d280b0 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#20 0x00007ffff7b68d62 in QDockWidget::dockLocationChanged(Qt::DockWidgetArea) () at /usr/lib/libQt5Widgets.so.5
#21 0x00007ffff7ba21df in  () at /usr/lib/libQt5Widgets.so.5
#22 0x00005555556dcf5a in veles::ui::MainWindowWithDetachableDockWidgets::addTab(QWidget*, QString const&, veles::ui::DockWidget*) ()
#23 0x00005555556dd52f in veles::ui::MainWindowWithDetachableDockWidgets::createVisualization(QSharedPointer<veles::ui::FileBlobModel> const&) ()
#24 0x00007ffff6d280b0 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#25 0x00007ffff7a4c613 in QAction::triggered(bool) () at /usr/lib/libQt5Widgets.so.5
#26 0x00007ffff7a4ed0a in QAction::activate(QAction::ActionEvent) () at /usr/lib/libQt5Widgets.so.5
#27 0x00007ffff7b3ee5e in  () at /usr/lib/libQt5Widgets.so.5
#28 0x00007ffff7b3f096 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#29 0x00007ffff7c2e61b in QToolButton::mouseReleaseEvent(QMouseEvent*) () at /usr/lib/libQt5Widgets.so.5
#30 0x00007ffff7a92658 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#31 0x00007ffff7c2e6c4 in QToolButton::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#32 0x00007ffff7a52e14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#33 0x00007ffff7a5a92a in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#34 0x00007ffff6cfe119 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#35 0x00007ffff7a59c11 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () at /usr/lib/libQt5Widgets.so.5
#36 0x00007ffff7aad98c in  () at /usr/lib/libQt5Widgets.so.5
#37 0x00007ffff7ab05d5 in  () at /usr/lib/libQt5Widgets.so.5
#38 0x00007ffff7a52e14 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#39 0x00007ffff7a5a6e1 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007ffff6cfe119 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#41 0x00007ffff724ad04 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () at /usr/lib/libQt5Gui.so.5
#42 0x00007ffff724ccc6 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/libQt5Gui.so.5
#43 0x00007ffff7226a4c in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Gui.so.5
#44 0x00007ffff191031d in  () at /usr/lib/libQt5XcbQpa.so.5
#45 0x00007ffff6cfcdac in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#46 0x00007ffff6d050a6 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#47 0x000055555565abdb in main ()
#48 0x00007ffff65bc223 in __libc_start_main () at /usr/lib/libc.so.6
#49 0x000055555565c25e in _start ()

[mishaturnbull]

I have the same issue as @tonylambiris with the latest commit e65de5a.

Linux [redacted] 4.18.0-kali2-amd64 #1 SMP Debian 4.18.10-2kali1 (2018-10-09) x86_64 GNU/Linux

[Juleinn]

I have the same issue and after some digging I was able to make it work by disabling the color palette setting in MainWindowWithDetachableDockWidgets::updateActiveDockWidget() in src/ui/mainwindowwithdetachabledockwidgets.cc:

  QList<DockWidget*> dock_widgets = findChildren<DockWidget*>();
  for (auto dock_widget : dock_widgets) {
    if (false && mark_active_dock_widget_ && active_dock_widget_ == dock_widget) {
      dock_widget->setStyleSheet(
          QString("%1::title {"
                  "background : palette(highlight);"
                  "color : palette(highlighted-text);"
                  "}")
              .arg(QString(dock_widget->metaObject()->className())
                       .replace(':', '-')));
    } else {
      // always force emptystylesheet
      dock_widget->setStyleSheet("");
    }
  }

It seems to be related to Qt palette ( I also get these messages :

qt5ct: using qt5ct plugin
qt5ct: D-Bus global menu: no
qt5ct: palette support is disabled

)

No idea how to really fix this though, and it will still crash if you try dragging parts of the window. Any ideas ?

[tonylambiris]

Added the following patch to veles-git in the AUR.

diff --git a/src/ui/mainwindowwithdetachabledockwidgets.cc b/src/ui/mainwindowwithdetachabledockwidgets.cc
index 15e7e17..05a81e9 100644
--- a/src/ui/mainwindowwithdetachabledockwidgets.cc
+++ b/src/ui/mainwindowwithdetachabledockwidgets.cc
@@ -603,7 +603,8 @@ void MainWindowWithDetachableDockWidgets::updateActiveDockWidget() {
 
   QList<DockWidget*> dock_widgets = findChildren<DockWidget*>();
   for (auto dock_widget : dock_widgets) {
-    if (mark_active_dock_widget_ && active_dock_widget_ == dock_widget) {
+    // always force emptystylesheet to fix veles crashes
+    if (false && mark_active_dock_widget_ && active_dock_widget_ == dock_widget) {
       dock_widget->setStyleSheet(
           QString("%1::title {"
                   "background : palette(highlight);"

Thanks for digging into this @Juleinn