Bug 324639

Application: plasma-desktop (4.11.1)
KDE Platform Version: 4.11.1
Qt Version: 4.8.2
Operating System: Linux 3.5.3-030503-generic x86_64
Distribution: Ubuntu 12.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:- What I was doing when the application crashed: I wanted to add a new plasma widget. I went to download the widget via the application that is part of the plasma panel. Plasma-desktop crashed, then restarted. This use to happen 90% of the time and, after retrying everything over and over again, the download app not only opens up but stops crashing. If I log out and back in, however, the crashing starts all over again. Now, however, the crash happens every time. Moreover, I cannot install widgets manually either via the installer in the panel because it also crashes.

The crash can be reproduced every time.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fdbc7097780 (LWP 3547))]

Thread 3 (Thread 0x7fdba80a5700 (LWP 3548)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fdbc029c022 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fdbc029c059 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fdbbab25e9a in start_thread (arg=0x7fdba80a5700) at pthread_create.c:308
#4  0x00007fdbc6984ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fdb1cd29700 (LWP 3549)):
#0  0x00007fdbc6979313 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fdbba429036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fdbba429164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fdbc34ea926 in QEventDispatcherGlib::processEvents (this=0x7fdb180008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fdbc34b9e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fdbc34ba0b7 in QEventLoop::exec (this=0x7fdb1cd28dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fdbc33b9077 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fdbc3499b6f in QInotifyFileSystemWatcherEngine::run (this=0x202ff70) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fdbc33bc09b in QThreadPrivate::start (arg=0x202ff70) at thread/qthread_unix.cpp:307
#9  0x00007fdbbab25e9a in start_thread (arg=0x7fdb1cd29700) at pthread_create.c:308
#10 0x00007fdbc6984ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fdbc7097780 (LWP 3547)):
[KCrash Handler]
#6  0x00007fdbc50f29ee in QDeclarativeItem::~QDeclarativeItem (this=0x6d955f0, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#7  0x00007fdb27118a61 in ~QDeclarativeElement (this=0x6d955f0, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#8  QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0x6d955f0, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#9  0x00007fdbc34d4978 in QObject::event (this=0x6d955f0, e=<optimized out>) at kernel/qobject.cpp:1176
#10 0x00007fdbc283c7b4 in notify_helper (e=0x4c082a0, receiver=0x6d955f0, this=0xfc9ee0) at kernel/qapplication.cpp:4556
#11 QApplicationPrivate::notify_helper (this=0xfc9ee0, receiver=0x6d955f0, e=0x4c082a0) at kernel/qapplication.cpp:4528
#12 0x00007fdbc2841583 in QApplication::notify (this=0xfac210, receiver=0x6d955f0, e=0x4c082a0) at kernel/qapplication.cpp:4417
#13 0x00007fdbc41a0d96 in KApplication::notify (this=0xfac210, receiver=0x6d955f0, event=0x4c082a0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007fdbc34bb32c in QCoreApplication::notifyInternal (this=0xfac210, receiver=0x6d955f0, event=0x4c082a0) at kernel/qcoreapplication.cpp:915
#15 0x00007fdbc34bf10a in sendEvent (event=0x4c082a0, receiver=0x6d955f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0xf511f0) at kernel/qcoreapplication.cpp:1539
#17 0x00007fdbc34ea493 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#18 postEventSourceDispatch (s=<optimized out>) at kernel/qeventdispatcher_glib.cpp:279
#19 0x00007fdbba428d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fdbba4290a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fdbba429164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fdbc34ea8bf in QEventDispatcherGlib::processEvents (this=0xf52ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007fdbc28e4cde in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007fdbc34b9e62 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007fdbc34ba0b7 in QEventLoop::exec (this=0x7fff20c2acb0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007fdbc34bf407 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#27 0x00007fdbc6c8dfbf in kdemain (argc=1, argv=0x7fff20c2b098) at ../../../../plasma/desktop/shell/main.cpp:126
#28 0x00007fdbc68b276d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff20c2b098, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff20c2b088) at libc-start.c:226
#29 0x0000000000400671 in _start ()

Possible duplicates by query: bug 324517, bug 324494, bug 324036, bug 323705, bug 323674.

Reported using DrKonqi