Application: plasma-desktop (4.11.2)
KDE Platform Version: 4.11.2
Qt Version: 4.8.4
Operating System: Linux 3.11.0-12-generic i686
Distribution: Ubuntu 13.10

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

Switching between activity screens by clicking on a desktop widget.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb12cb740 (LWP 1995))]

Thread 9 (Thread 0xadf5bb40 (LWP 1997)):
#0  0xb206085e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2060bd8 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb201d53f in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb201daea in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb201dc98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb608f8df in QEventDispatcherGlib::processEvents (this=0xad600468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb605e9f3 in QEventLoop::processEvents (this=this@entry=0xadf5b228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb605ed19 in QEventLoop::exec (this=this@entry=0xadf5b228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5f4de3d in QThread::exec (this=this@entry=0x8f0fe18) at thread/qthread.cpp:542
#9  0xb603ee14 in QInotifyFileSystemWatcherEngine::run (this=0x8f0fe18) at io/qfilesystemwatcher_inotify.cpp:265
#10 0xb5f5072f in QThreadPrivate::start (arg=0x8f0fe18) at thread/qthread_unix.cpp:338
#11 0xb2132d78 in start_thread (arg=0xadf5bb40) at pthread_create.c:311
#12 0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 8 (Thread 0xad5ffb40 (LWP 1998)):
#0  0xb7784424 in __kernel_vsyscall ()
#1  0xb213684b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb76329bc in __pthread_cond_wait (cond=0xb32388d0, mutex=0xb32388b8) at forward.c:149
#3  0xb3135ef2 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#4  0xb3135f3f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4
#5  0xb2132d78 in start_thread (arg=0xad5ffb40) at pthread_create.c:311
#6  0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 7 (Thread 0xa3fffb40 (LWP 2002)):
#0  0xb206086b in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2060b98 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb201cff9 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb201da4f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb201e03b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xa4a620ea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0xb2043c3a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb2132d78 in start_thread (arg=0xa3fffb40) at pthread_create.c:311
#8  0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 6 (Thread 0xa2937b40 (LWP 2004)):
#0  0xb206085e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2060bd8 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb201d572 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb201daea in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb201dc98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb608f8df in QEventDispatcherGlib::processEvents (this=0x9c982f0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb605e9f3 in QEventLoop::processEvents (this=this@entry=0xa2937228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb605ed19 in QEventLoop::exec (this=this@entry=0xa2937228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb5f4de3d in QThread::exec (this=this@entry=0x9d1a2c0) at thread/qthread.cpp:542
#9  0xb603ee14 in QInotifyFileSystemWatcherEngine::run (this=0x9d1a2c0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0xb5f5072f in QThreadPrivate::start (arg=0x9d1a2c0) at thread/qthread_unix.cpp:338
#11 0xb2132d78 in start_thread (arg=0xa2937b40) at pthread_create.c:311
#12 0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 5 (Thread 0x9b818b40 (LWP 23121)):
#0  0xb7784424 in __kernel_vsyscall ()
#1  0xb213684b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb76329bc in __pthread_cond_wait (cond=0x8fa4478, mutex=0x8fa4460) at forward.c:149
#3  0xb5f50ca5 in wait (time=4294967295, this=0x8fa4460) at thread/qwaitcondition_unix.cpp:86
#4  QWaitCondition::wait (this=this@entry=0x8fbb4a0, mutex=0x8f95878, time=time@entry=4294967295) at thread/qwaitcondition_unix.cpp:158
#5  0xb2dc58d3 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8fbb488, th=th@entry=0xbc28510) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#6  0xb2dc881b in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8f2fae8, th=0xbc28510) at ../../../threadweaver/Weaver/WorkingHardState.cpp:77
#7  0xb2dc582a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8fbb488, th=th@entry=0xbc28510) at ../../../threadweaver/Weaver/WeaverImpl.cpp:361
#8  0xb2dc88f2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x8f2fae8, th=0xbc28510, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#9  0xb2dc4782 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8fbb488, th=0xbc28510, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#10 0xb2dc8911 in ThreadWeaver::WorkingHardState::applyForWork (this=0x8f2fae8, th=0xbc28510, previous=0xb5449e8) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#11 0xb2dc4782 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8fbb488, th=0xbc28510, previous=0xb5449e8) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#12 0xb2dc7283 in ThreadWeaver::Thread::run (this=0xbc28510) at ../../../threadweaver/Weaver/Thread.cpp:98
#13 0xb5f5072f in QThreadPrivate::start (arg=0xbc28510) at thread/qthread_unix.cpp:338
#14 0xb2132d78 in start_thread (arg=0x9b818b40) at pthread_create.c:311
#15 0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 4 (Thread 0x9c019b40 (LWP 23122)):
#0  0xb7784424 in __kernel_vsyscall ()
#1  0xb213684b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb76329bc in __pthread_cond_wait (cond=0x8fa4478, mutex=0x8fa4460) at forward.c:149
#3  0xb5f50ca5 in wait (time=4294967295, this=0x8fa4460) at thread/qwaitcondition_unix.cpp:86
#4  QWaitCondition::wait (this=this@entry=0x8fbb4a0, mutex=0x8f95878, time=time@entry=4294967295) at thread/qwaitcondition_unix.cpp:158
#5  0xb2dc58d3 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8fbb488, th=th@entry=0xb7ff278) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#6  0xb2dc881b in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8f2fae8, th=0xb7ff278) at ../../../threadweaver/Weaver/WorkingHardState.cpp:77
#7  0xb2dc582a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8fbb488, th=th@entry=0xb7ff278) at ../../../threadweaver/Weaver/WeaverImpl.cpp:361
#8  0xb2dc88f2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x8f2fae8, th=0xb7ff278, previous=0x0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#9  0xb2dc4782 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8fbb488, th=0xb7ff278, previous=0x0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#10 0xb2dc8911 in ThreadWeaver::WorkingHardState::applyForWork (this=0x8f2fae8, th=0xb7ff278, previous=0xb56ca08) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#11 0xb2dc4782 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8fbb488, th=0xb7ff278, previous=0xb56ca08) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#12 0xb2dc7283 in ThreadWeaver::Thread::run (this=0xb7ff278) at ../../../threadweaver/Weaver/Thread.cpp:98
#13 0xb5f5072f in QThreadPrivate::start (arg=0xb7ff278) at thread/qthread_unix.cpp:338
#14 0xb2132d78 in start_thread (arg=0x9c019b40) at pthread_create.c:311
#15 0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 3 (Thread 0xa496cb40 (LWP 23123)):
#0  0xb7784424 in __kernel_vsyscall ()
#1  0xb213684b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb76329bc in __pthread_cond_wait (cond=0x8fa4478, mutex=0x8fa4460) at forward.c:149
#3  0xb5f50ca5 in wait (time=4294967295, this=0x8fa4460) at thread/qwaitcondition_unix.cpp:86
#4  QWaitCondition::wait (this=this@entry=0x8fbb4a0, mutex=0x8f95878, time=time@entry=4294967295) at thread/qwaitcondition_unix.cpp:158
#5  0xb2dc58d3 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8fbb488, th=th@entry=0xb6474f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#6  0xb2dc881b in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8f2fae8, th=0xb6474f0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:77
#7  0xb2dc582a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8fbb488, th=th@entry=0xb6474f0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:361
#8  0xb2dc88f2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x8f2fae8, th=0xb6474f0, previous=0xb782bc0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#9  0xb2dc4782 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8fbb488, th=0xb6474f0, previous=0xb782bc0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#10 0xb2dc7283 in ThreadWeaver::Thread::run (this=0xb6474f0) at ../../../threadweaver/Weaver/Thread.cpp:98
#11 0xb5f5072f in QThreadPrivate::start (arg=0xb6474f0) at thread/qthread_unix.cpp:338
#12 0xb2132d78 in start_thread (arg=0xa496cb40) at pthread_create.c:311
#13 0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 2 (Thread 0x9b017b40 (LWP 23124)):
#0  0xb7784424 in __kernel_vsyscall ()
#1  0xb213684b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb76329bc in __pthread_cond_wait (cond=0x8fa4478, mutex=0x8fa4460) at forward.c:149
#3  0xb5f50ca5 in wait (time=4294967295, this=0x8fa4460) at thread/qwaitcondition_unix.cpp:86
#4  QWaitCondition::wait (this=this@entry=0x8fbb4a0, mutex=0x8f95878, time=time@entry=4294967295) at thread/qwaitcondition_unix.cpp:158
#5  0xb2dc58d3 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x8fbb488, th=th@entry=0xb676878) at ../../../threadweaver/Weaver/WeaverImpl.cpp:370
#6  0xb2dc881b in ThreadWeaver::WorkingHardState::waitForAvailableJob (this=0x8f2fae8, th=0xb676878) at ../../../threadweaver/Weaver/WorkingHardState.cpp:77
#7  0xb2dc582a in ThreadWeaver::WeaverImpl::waitForAvailableJob (this=0x8fbb488, th=th@entry=0xb676878) at ../../../threadweaver/Weaver/WeaverImpl.cpp:361
#8  0xb2dc88f2 in ThreadWeaver::WorkingHardState::applyForWork (this=0x8f2fae8, th=0xb676878, previous=0x9d4e820) at ../../../threadweaver/Weaver/WorkingHardState.cpp:68
#9  0xb2dc4782 in ThreadWeaver::WeaverImpl::applyForWork (this=0x8fbb488, th=0xb676878, previous=0x9d4e820) at ../../../threadweaver/Weaver/WeaverImpl.cpp:356
#10 0xb2dc7283 in ThreadWeaver::Thread::run (this=0xb676878) at ../../../threadweaver/Weaver/Thread.cpp:98
#11 0xb5f5072f in QThreadPrivate::start (arg=0xb676878) at thread/qthread_unix.cpp:338
#12 0xb2132d78 in start_thread (arg=0x9b017b40) at pthread_create.c:311
#13 0xb762501e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 1 (Thread 0xb12cb740 (LWP 1995)):
[KCrash Handler]
#7  0xb6beb38e in QDeclarativeItem::~QDeclarativeItem (this=0xbec7e08, __in_chrg=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:1668
#8  0xae4a933a in Plasma::FrameSvgItem::~FrameSvgItem (this=0xbec7e08, __in_chrg=<optimized out>) at ../../../../plasma/declarativeimports/core/framesvgitem.cpp:73
#9  0xae495b2a in ~QDeclarativeElement (this=0xbec7e08, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#10 QDeclarativePrivate::QDeclarativeElement<Plasma::FrameSvgItem>::~QDeclarativeElement (this=0xbec7e08, __in_chrg=<optimized out>) at /usr/include/qt4/QtDeclarative/qdeclarativeprivate.h:87
#11 0xb6073423 in qDeleteInEventHandler (o=o@entry=0xbec7e08) at kernel/qobject.cpp:4269
#12 0xb60795b0 in QObject::event (this=0xbec7e08, e=0xb83de20) at kernel/qobject.cpp:1175
#13 0xb6be6384 in QDeclarativeItem::event (this=<optimized out>, ev=<optimized out>) at graphicsitems/qdeclarativeitem.cpp:3748
#14 0xb5570744 in QApplicationPrivate::notify_helper (this=0x873ac60, receiver=0xbec7e08, e=0xb83de20) at kernel/qapplication.cpp:4567
#15 0xb5577223 in QApplication::notify (this=0x872af10, receiver=receiver@entry=0xbec7e08, e=e@entry=0xb83de20) at kernel/qapplication.cpp:4353
#16 0xb66d3ff4 in KApplication::notify (this=0x872af10, receiver=0xbec7e08, event=0xb83de20) at ../../kdeui/kernel/kapplication.cpp:311
#17 0xb605feda in QCoreApplication::notifyInternal (this=0x872af10, receiver=receiver@entry=0xbec7e08, event=event@entry=0xb83de20) at kernel/qcoreapplication.cpp:946
#18 0xb60636ad in sendEvent (event=0xb83de20, receiver=0xbec7e08) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x86dc130) at kernel/qcoreapplication.cpp:1570
#20 0xb6063bbc in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#21 0xb608ff6e in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#22 postEventSourceDispatch (s=0x8738120) at kernel/qeventdispatcher_glib.cpp:279
#23 0xb201d82e in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0xb201dbd8 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0xb201dc98 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0xb608f8bf in QEventDispatcherGlib::processEvents (this=this@entry=0x86dcea8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#27 0xb562532e in QGuiEventDispatcherGlib::processEvents (this=0x86dcea8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0xb605e9f3 in QEventLoop::processEvents (this=this@entry=0xbfc321b8, flags=...) at kernel/qeventloop.cpp:149
#29 0xb605ed19 in QEventLoop::exec (this=this@entry=0xbfc321b8, flags=...) at kernel/qeventloop.cpp:204
#30 0xb606489e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#31 0xb556e974 in QApplication::exec () at kernel/qapplication.cpp:3828
#32 0xb7742927 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#33 0x0804855b in ?? ()
#34 0xb754c905 in __libc_start_main (main=0x8048540, argc=1, ubp_av=0xbfc32354, init=0x8048660 <__libc_csu_init>, fini=0x80486d0 <__libc_csu_fini>, rtld_fini=0xb77945f0 <_dl_fini>, stack_end=0xbfc3234c) at libc-start.c:260
#35 0x0804857e in _start ()

The reporter indicates this bug may be a duplicate of or related to bug 326340.

Possible duplicates by query: bug 326340, bug 325395, bug 324494, bug 323674, bug 321630.

Reported using DrKonqi