Bug 404840

Application: filelight (18.12.2)

Qt Version: 5.12.0
Frameworks Version: 5.55.0
Operating System: Linux 4.18.0-15-generic x86_64
Distribution: KDE neon User Edition 5.15

-- Information about the crash:
To reproduce:
open filelight
scan root folder
go folder up
scan home folder
dead X_X

The crash can be reproduced every time.

-- Backtrace:
Application: Filelight (filelight), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7efd8cd61c80 (LWP 16080))]

Thread 3 (Thread 0x7efd6b1a0700 (LWP 16083)):
#0  0x00007efd85dba9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5612dc974128) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x5612dc9740d8, cond=0x5612dc974100) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x5612dc974100, mutex=0x5612dc9740d8) at pthread_cond_wait.c:655
#3  0x00007efd7065cb1b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007efd7065c847 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007efd85db46db in start_thread (arg=0x7efd6b1a0700) at pthread_create.c:463
#6  0x00007efd88e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7efd73ffa700 (LWP 16082)):
#0  0x00007efd88e6dbf9 in __GI___poll (fds=0x7efd6c004db0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007efd8406e539 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efd8406e64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efd89b4e15b in QEventDispatcherGlib::processEvents (this=0x7efd6c000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007efd89aef64a in QEventLoop::exec (this=this@entry=0x7efd73ff9d70, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007efd8991741a in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007efd872a5015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007efd89918bc2 in QThreadPrivate::start (arg=0x7efd8751cd80) at thread/qthread_unix.cpp:361
#8  0x00007efd85db46db in start_thread (arg=0x7efd73ffa700) at pthread_create.c:463
#9  0x00007efd88e7a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7efd8cd61c80 (LWP 16080)):
[KCrash Handler]
#6  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:93
#7  0x00007efd89928800 in QByteArray::QByteArray (this=0x7ffdc5cee190, data=0x226d <error: Cannot access memory at address 0x226d>, size=-1) at tools/qbytearray.cpp:1783
#8  0x00005612db3e8171 in QFile::decodeName (localFileName=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qfile.h:98
#9  File::url (this=<optimized out>, root=root@entry=0x0) at ./src/fileTree.cpp:50
#10 0x00005612db3d9ce8 in RadialMap::Widget::url (file=0x0, this=0x5612dc8c2d00) at ./src/radialMap/widget.cpp:70
#11 RadialMap::Widget::invalidate (this=0x5612dc8c2d00) at ./src/radialMap/widget.cpp:84
#12 0x00005612db3da04c in RadialMap::Widget::invalidate (this=<optimized out>) at ./src/radialMap/widget.cpp:75
#13 0x00005612db3efe28 in Filelight::MainWindow::start (this=this@entry=0x5612dc8aedd0, url=...) at ./src/mainWindow.cpp:477
#14 0x00005612db3f010c in Filelight::MainWindow::openUrl (this=this@entry=0x5612dc8aedd0, u=...) at ./src/mainWindow.cpp:399
#15 0x00005612db3f058b in Filelight::MainWindow::slotScanUrl (this=this@entry=0x5612dc8aedd0, url=...) at ./src/mainWindow.cpp:269
#16 0x00005612db3f068f in Filelight::MainWindow::slotScanPath (this=this@entry=0x5612dc8aedd0, path=...) at ./src/mainWindow.cpp:262
#17 0x00005612db3f06ef in Filelight::MainWindow::slotScanHomeFolder (this=0x5612dc8aedd0) at ./src/mainWindow.cpp:232
#18 0x00007efd89b20f3f in QtPrivate::QSlotObjectBase::call (a=0x7ffdc5cee4d0, r=0x5612dc8aedd0, this=0x5612dc985be0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:394
#19 QMetaObject::activate (sender=sender@entry=0x5612dc976370, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffdc5cee4d0) at kernel/qobject.cpp:3759
#20 0x00007efd89b214f7 in QMetaObject::activate (sender=sender@entry=0x5612dc976370, m=m@entry=0x7efd8afb9820 <QAction::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x7ffdc5cee4d0) at kernel/qobject.cpp:3631
#21 0x00007efd8a8e10f2 in QAction::triggered (this=this@entry=0x5612dc976370, _t1=<optimized out>) at .moc/moc_qaction.cpp:380
#22 0x00007efd8a8e370c in QAction::activate (this=0x5612dc976370, event=<optimized out>) at kernel/qaction.cpp:1166
#23 0x00007efd8aa583ac in QMenuPrivate::activateCausedStack (this=this@entry=0x5612dca4f770, causedStack=..., action=action@entry=0x5612dc976370, action_e=action_e@entry=QAction::Trigger, self=self@entry=true) at widgets/qmenu.cpp:1371
#24 0x00007efd8aa5f91b in QMenuPrivate::activateAction (this=this@entry=0x5612dca4f770, action=action@entry=0x5612dc976370, action_e=action_e@entry=QAction::Trigger, self=self@entry=true) at widgets/qmenu.cpp:1448
#25 0x00007efd8aa60793 in QMenu::mouseReleaseEvent (this=<optimized out>, e=0x7ffdc5ceebb0) at widgets/qmenu.cpp:2940
#26 0x00007efd8a927838 in QWidget::event (this=this@entry=0x5612dc936370, event=event@entry=0x7ffdc5ceebb0) at kernel/qwidget.cpp:9268
#27 0x00007efd8aa62abb in QMenu::event (this=0x5612dc936370, e=0x7ffdc5ceebb0) at widgets/qmenu.cpp:3062
#28 0x00007efd8a8e783c in QApplicationPrivate::notify_helper (this=this@entry=0x5612dc806ff0, receiver=receiver@entry=0x5612dc936370, e=e@entry=0x7ffdc5ceebb0) at kernel/qapplication.cpp:3752
#29 0x00007efd8a8efca8 in QApplication::notify (this=<optimized out>, receiver=0x5612dc936370, e=0x7ffdc5ceebb0) at kernel/qapplication.cpp:3213
#30 0x00007efd89af1328 in QCoreApplication::notifyInternal2 (receiver=0x5612dc936370, event=0x7ffdc5ceebb0) at kernel/qcoreapplication.cpp:1061
#31 0x00007efd89af150e in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x5612dc936370, event=event@entry=0x7ffdc5ceebb0) at kernel/qcoreapplication.cpp:1463
#32 0x00007efd8a8ee29f in QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x5612dc936370, event=event@entry=0x7ffdc5ceebb0, alienWidget=0x0, alienWidget@entry=0x5612dc936370, nativeWidget=0x5612dc936370, buttonDown=buttonDown@entry=0x7efd8afe88b0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2699
#33 0x00007efd8a94279d in QWidgetWindow::handleMouseEvent (this=this@entry=0x5612dcd1acf0, event=event@entry=0x7ffdc5cef040) at kernel/qwidgetwindow.cpp:558
#34 0x00007efd8a94534a in QWidgetWindow::event (this=0x5612dcd1acf0, event=0x7ffdc5cef040) at kernel/qwidgetwindow.cpp:281
#35 0x00007efd8a8e783c in QApplicationPrivate::notify_helper (this=this@entry=0x5612dc806ff0, receiver=receiver@entry=0x5612dcd1acf0, e=e@entry=0x7ffdc5cef040) at kernel/qapplication.cpp:3752
#36 0x00007efd8a8eedd0 in QApplication::notify (this=0x7ffdc5cef4d0, receiver=0x5612dcd1acf0, e=0x7ffdc5cef040) at kernel/qapplication.cpp:3499
#37 0x00007efd89af1328 in QCoreApplication::notifyInternal2 (receiver=0x5612dcd1acf0, event=0x7ffdc5cef040) at kernel/qcoreapplication.cpp:1061
#38 0x00007efd89af150e in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x5612dcd1acf0, event=event@entry=0x7ffdc5cef040) at kernel/qcoreapplication.cpp:1463
#39 0x00007efd8a0b952b in QGuiApplicationPrivate::processMouseEvent (e=0x5612dcd91490) at kernel/qguiapplication.cpp:2102
#40 0x00007efd8a0ba695 in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x5612dcd91490) at kernel/qguiapplication.cpp:1837
#41 0x00007efd8a09314b in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1068
#42 0x00007efd7e34630a in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#43 0x00007efd8406e387 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007efd8406e5c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007efd8406e64c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007efd89b4e13f in QEventDispatcherGlib::processEvents (this=0x5612dc86dc70, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#47 0x00007efd89aef64a in QEventLoop::exec (this=this@entry=0x7ffdc5cef3e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#48 0x00007efd89af8800 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1364
#49 0x00005612db3d9a6a in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:90

Reported using DrKonqi