D26117: [solid] Clarify referencing of DeviceInterface

[Anthony Fieroni]

anthonyfieroni added a comment.


  You can't run kinfocenter or what?
  
    Application: Info Center (kinfocenter), signal: Segmentation fault
    Using host libthread_db library "/lib/libthread_db.so.1".
    [Current thread is 1 (Thread 0x7f4c245a2840 (LWP 318849))]
    
    Thread 4 (Thread 0x7f4bf9c42700 (LWP 318852)):
    #0  0x00007f4c1b898115 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
    #1  0x00007f4bfac7ae8b in ?? () from /usr/lib/dri/i965_dri.so
    #2  0x00007f4bfac7aaf7 in ?? () from /usr/lib/dri/i965_dri.so
    #3  0x00007f4c1b891be4 in start_thread () from /lib/libpthread.so.0
    #4  0x00007f4c2042033f in clone () from /lib/libc.so.6
    
    Thread 3 (Thread 0x7f4c067a7700 (LWP 318851)):
    #0  0x00007f4c204122ac in read () from /lib/libc.so.6
    #1  0x00007f4c17b41e4f in ?? () from /usr/lib/libglib-2.0.so.0
    #2  0x00007f4c17afc84e in g_main_context_check () from /usr/lib/libglib-2.0.so.0
    #3  0x00007f4c17afcc5a in ?? () from /usr/lib/libglib-2.0.so.0
    #4  0x00007f4c17afcdcf in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
    #5  0x00007f4c20dab21b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
    #6  0x00007f4c20d562eb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
    #7  0x00007f4c20b852ae in QThread::exec() () from /usr/lib/libQt5Core.so.5
    #8  0x00007f4c1fc3f7f7 in ?? () from /usr/lib/libQt5DBus.so.5
    #9  0x00007f4c20b8627d in ?? () from /usr/lib/libQt5Core.so.5
    #10 0x00007f4c1b891be4 in start_thread () from /lib/libpthread.so.0
    #11 0x00007f4c2042033f in clone () from /lib/libc.so.6
    
    Thread 2 (Thread 0x7f4c0f6fa700 (LWP 318850)):
    #0  0x00007f4c204165af in poll () from /lib/libc.so.6
    #1  0x00007f4c1bcb9827 in ?? () from /usr/lib/libxcb.so.1
    #2  0x00007f4c1bcbb3ba in xcb_wait_for_event () from /usr/lib/libxcb.so.1
    #3  0x00007f4c124da960 in ?? () from /usr/lib/qt5/plugins/platforms/../../../libQt5XcbQpa.so.5
    #4  0x00007f4c20b8627d in ?? () from /usr/lib/libQt5Core.so.5
    #5  0x00007f4c1b891be4 in start_thread () from /lib/libpthread.so.0
    #6  0x00007f4c2042033f in clone () from /lib/libc.so.6
    
    Thread 1 (Thread 0x7f4c245a2840 (LWP 318849)):
    [KCrash Handler]
    #6  0x00007f4c241399dc in QWeakPointer<QObject>::internalData (this=0x28) at /usr/include/qt5/QtCore/qsharedpointer_impl.h:701
    #7  0x00007f4c24141d88 in QPointer<QObject>::data (this=0x28) at /usr/include/qt5/QtCore/qpointer.h:77
    #8  0x00007f4c24141c0e in Solid::DeviceInterfacePrivate::backendObject (this=0x20) at /home/toni/solid/src/solid/devices/frontend/deviceinterface.cpp:110 // <----------------- invalid this pointer
    #9  0x00007f4c24138c99 in Solid::DevicePrivate::~DevicePrivate (this=0xe766c0, __in_chrg=<optimized out>) at /home/toni/solid/src/solid/devices/frontend/device.cpp:222
    #10 0x00007f4c24138d48 in Solid::DevicePrivate::~DevicePrivate (this=0xe766c0, __in_chrg=<optimized out>) at /home/toni/solid/src/solid/devices/frontend/device.cpp:225
    #11 0x00007f4c2413ab1b in Solid::DeviceManagerPrivate::~DeviceManagerPrivate (this=0xde4230, __in_chrg=<optimized out>) at /home/toni/solid/src/solid/devices/frontend/devicemanager.cpp:58
    #12 0x00007f4c2413abe6 in Solid::DeviceManagerPrivate::~DeviceManagerPrivate (this=0xde4230, __in_chrg=<optimized out>) at /home/toni/solid/src/solid/devices/frontend/devicemanager.cpp:63
    #13 0x00007f4c2413f9be in qThreadStorage_deleteData<Solid::DeviceManagerPrivate> (d=0xde4230) at /usr/include/qt5/QtCore/qthreadstorage.h:92
    #14 0x00007f4c2413e6c8 in QThreadStorage<Solid::DeviceManagerPrivate*>::deleteData (x=0xde4230) at /usr/include/qt5/QtCore/qthreadstorage.h:135
    #15 0x00007f4c20b8b240 in QThreadStorageData::finish(void**) () from /usr/lib/libQt5Core.so.5
    #16 0x00007f4c20d59819 in QCoreApplicationPrivate::cleanupThreadData() () from /usr/lib/libQt5Core.so.5
    #17 0x00007f4c21348e64 in QGuiApplicationPrivate::~QGuiApplicationPrivate() () from /usr/lib/libQt5Gui.so.5
    #18 0x00007f4c21c0f8b9 in QApplicationPrivate::~QApplicationPrivate() () from /usr/lib/libQt5Widgets.so.5
    #19 0x00007f4c20d888fe in QObject::~QObject() () from /usr/lib/libQt5Core.so.5
    #20 0x00007f4c20d595dc in QCoreApplication::~QCoreApplication() () from /usr/lib/libQt5Core.so.5
    #21 0x00007f4c21c1171e in QApplication::~QApplication() () from /usr/lib/libQt5Widgets.so.5
    #22 0x000000000040e645 in ?? ()
    #23 0x00007f4c2034e2cb in __libc_start_main () from /lib/libc.so.6
    #24 0x000000000040e67a in _start ()
    [Inferior 1 (process 318849) detached]

REPOSITORY
  R245 Solid

REVISION DETAIL
  https://phabricator.kde.org/D26117

To: anthonyfieroni, broulik, bruns
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns
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