Bug 292079

Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-15-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

Downloaded a .torrent file and auto-opened the file with Vuze.  Crash occurred immediately/simultaneously.

The crash does not seem to be reproducible.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f26aee877a0 (LWP 1996))]

Thread 4 (Thread 0x7f268e509700 (LWP 1997)):
#0  0x00007f26a3800034 in __pthread_mutex_lock (mutex=0x2517f78) at pthread_mutex_lock.c:61
#1  0x00007f26a2cf0f2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f26a2cf1429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f26ab957f3e in QEventDispatcherGlib::processEvents (this=0x2517440, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f26ab92bcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f26ab92bef7 in QEventLoop::exec (this=0x7f268e508db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f26ab84327f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f26ab90ecbf in QInotifyFileSystemWatcherEngine::run (this=0x2515b40) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f26ab845d05 in QThreadPrivate::start (arg=0x2515b40) at thread/qthread_unix.cpp:331
#9  0x00007f26a37fdefc in start_thread (arg=0x7f268e509700) at pthread_create.c:304
#10 0x00007f26ae77289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f2685d71700 (LWP 1998)):
#0  0x00007f26a38011fd in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x2a03f38) at pthread_mutex_unlock.c:290
#2  0x00007f26a2ceffe4 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f26a2cf0dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f26a2cf1429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f26ab957f3e in QEventDispatcherGlib::processEvents (this=0x2a03a30, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f26ab92bcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f26ab92bef7 in QEventLoop::exec (this=0x7f2685d70db0, flags=...) at kernel/qeventloop.cpp:201
#8  0x00007f26ab84327f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#9  0x00007f26ab90ecbf in QInotifyFileSystemWatcherEngine::run (this=0x29bb0e0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f26ab845d05 in QThreadPrivate::start (arg=0x29bb0e0) at thread/qthread_unix.cpp:331
#11 0x00007f26a37fdefc in start_thread (arg=0x7f2685d71700) at pthread_create.c:304
#12 0x00007f26ae77289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f267ffe5700 (LWP 2006)):
#0  0x00007f26ae766773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f26a2cf0f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f26a2cf1792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2680ac3516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f26a2d162b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f26a37fdefc in start_thread (arg=0x7f267ffe5700) at pthread_create.c:304
#6  0x00007f26ae77289d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f26aee877a0 (LWP 1996)):
[KCrash Handler]
#6  isNull (this=0x4d0000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x4d0000) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x37e8de0) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f26959c8068 in WindowTaskItem::publishIconGeometry (this=0x436c710, rect=...) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:130
#10 0x00007f26959d7d24 in TaskGroupItem::publishIconGeometry (this=<optimized out>, rect=...) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1432
#11 0x00007f26959d7aa5 in publishIconGeometry (this=0x2d16000) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1424
#12 TaskGroupItem::publishIconGeometry (this=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/taskgroupitem.cpp:1416
#13 0x00007f26959d6b7c in AbstractTaskItem::timerEvent (this=0x2d16000, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#14 0x00007f26ab943789 in QObject::event (this=0x2d16000, e=<optimized out>) at kernel/qobject.cpp:1181
#15 0x00007f26ab2fb89b in QGraphicsWidget::event (this=0x2d16000, event=0x7fff7c6403d0) at graphicsview/qgraphicswidget.cpp:1455
#16 0x00007f26aacdd424 in notify_helper (e=0x7fff7c6403d0, receiver=0x2d16000, this=0x1ba7f00) at kernel/qapplication.cpp:4486
#17 QApplicationPrivate::notify_helper (this=0x1ba7f00, receiver=0x2d16000, e=0x7fff7c6403d0) at kernel/qapplication.cpp:4458
#18 0x00007f26aace2291 in QApplication::notify (this=0x1ba4190, receiver=0x2d16000, e=0x7fff7c6403d0) at kernel/qapplication.cpp:4365
#19 0x00007f26ac5db126 in KApplication::notify (this=0x1ba4190, receiver=0x2d16000, event=0x7fff7c6403d0) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f26ab92cafc in QCoreApplication::notifyInternal (this=0x1ba4190, receiver=0x2d16000, event=0x7fff7c6403d0) at kernel/qcoreapplication.cpp:787
#21 0x00007f26ab959d62 in sendEvent (event=0x7fff7c6403d0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#22 QTimerInfoList::activateTimers (this=0x1baad00) at kernel/qeventdispatcher_unix.cpp:603
#23 0x00007f26ab957514 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#24 0x00007f26a2cf0a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f26a2cf1258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f26a2cf1429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f26ab957ed6 in QEventDispatcherGlib::processEvents (this=0x1b29f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#28 0x00007f26aad8507e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x00007f26ab92bcf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f26ab92bef7 in QEventLoop::exec (this=0x7fff7c640660, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007f26ab930789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#32 0x00007f26aea711a3 in kdemain (argc=1, argv=0x7fff7c640a48) at ../../../../plasma/desktop/shell/main.cpp:120
#33 0x00007f26ae6b230d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff7c640a48, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff7c640a38) at libc-start.c:226
#34 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 292063.

Possible duplicates by query: bug 292063, bug 292051, bug 292049, bug 292043, bug 292035.

Reported using DrKonqi