Bug 235906

Application: dolphin (1.4)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic x86_64
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
I Just experienced Dolphin crashing a few times randomly while browsing through directories.

I'm running a fresh Kubuntu 10.04 install.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f0b75d65760 (LWP 9073))]

Thread 5 (Thread 0x7f0b6538a710 (LWP 9077)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f0b65389aa0 in ?? ()
#2  0x00007fff2cbff852 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 4 (Thread 0x7f0b5b93f710 (LWP 9080)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:211
#1  0x00007f0b5d8a1081 in ?? () from /usr/lib/libxine.so.1
#2  0x00007f0b6ef4e9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#3  0x00007f0b719ef69d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f0b5e553710 (LWP 9081)):
#0  0x00007f0b719e14dd in write () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f0b7197c133 in _IO_new_file_write (f=0x7f0b71c85860, data=0x7f0b5e54f570, n=34) at fileops.c:1276
#2  0x00007f0b7197bfdd in new_do_write (f=0x7f0b71c85860, data=<value optimized out>, n=34) at fileops.c:530
#3  _IO_new_file_xsputn (f=0x7f0b71c85860, data=<value optimized out>, n=34) at fileops.c:1370
#4  0x00007f0b71953981 in buffered_vfprintf (s=0x7f0b71c85860, format=<value optimized out>, args=<value optimized out>) at vfprintf.c:2275
#5  0x00007f0b7194e5ae in _IO_vfprintf_internal (s=0x7f0b71c85860, format=0x7f0b7216e06b "%s\n", ap=0x7f0b5e551d60) at vfprintf.c:1306
#6  0x00007f0b71a06a3b in ___fprintf_chk (fp=0x7f0b71c85860, flag=1, format=0x7f0b5e553710 "\020\067U^\v\177") at fprintf_chk.c:37
#7  0x00007f0b72010830 in fprintf (msgType=QtWarningMsg, buf=<value optimized out>) at /usr/include/bits/stdio2.h:99
#8  qt_message_output (msgType=QtWarningMsg, buf=<value optimized out>) at global/qglobal.cpp:2216
#9  0x00007f0b72010a22 in qt_message (msgType=QtWarningMsg, msg=0x7f0b7216f4f7 "%s: %s failure: %s", ap=0x7f0b5e551f10) at global/qglobal.cpp:2296
#10 0x00007f0b72010d55 in qWarning (msg=0x7f0b5e54f570 "QMutex::lock(): cv wait failure: \n\n") at global/qglobal.cpp:2378
#11 0x00007f0b72017c3e in report_error (code=<value optimized out>, where=0x7f0b7216f550 "QMutex::lock()", what=0x7f0b7216f548 "cv wait") at thread/qmutex_unix.cpp:61
#12 0x00007f0b72017e4b in QMutexPrivate::wait (this=0x13daef1, timeout=-1) at thread/qmutex_unix.cpp:99
#13 0x00007f0b720139e5 in QMutex::lock (this=0x158fef0) at thread/qmutex.cpp:167
#14 0x00007f0b6fd8cadd in ?? () from /usr/lib/libsopranoclient.so.1
#15 0x00007f0b74a9eb9d in Nepomuk::MainModel::executeQuery (this=0x11de280, query=..., language=Soprano::Query::QueryLanguageSparql, userQueryLanguage=...)
    at ../../../nepomuk/core/nepomukmainmodel.cpp:213
#16 0x00007f0b747d077c in Soprano::FilterModel::executeQuery(QString const&, Soprano::Query::QueryLanguage, QString const&) const () from /usr/lib/libsoprano.so.4
#17 0x00007f0b74ab5066 in Nepomuk::Types::EntityPrivate::load (this=0x7f0b60084a70) at ../../../nepomuk/core/ontology/entity.cpp:73
#18 0x00007f0b74ab95db in Nepomuk::Types::ClassPrivate::load (this=0x2) at ../../../nepomuk/core/ontology/class.cpp:54
#19 0x00007f0b74ab4461 in Nepomuk::Types::EntityPrivate::init (this=0x7f0b60084a70) at ../../../nepomuk/core/ontology/entity.cpp:49
#20 0x00007f0b74ab8b92 in Nepomuk::Types::Class::isSubClassOf (this=0x7f0b5e552630, other=...) at ../../../nepomuk/core/ontology/class.cpp:489
#21 0x00007f0b74a9276a in Nepomuk::ResourceData::loadType (this=<value optimized out>, storedType=...) at ../../../nepomuk/core/resourcedata.cpp:379
#22 0x00007f0b74a94c47 in Nepomuk::ResourceData::load (this=<value optimized out>) at ../../../nepomuk/core/resourcedata.cpp:424
#23 0x00007f0b74a951b8 in Nepomuk::ResourceData::property (this=0x7f0b6007f210, uri=...) at ../../../nepomuk/core/resourcedata.cpp:271
#24 0x00007f0b74aafee2 in Nepomuk::Resource::property (this=<value optimized out>, uri=...) at ../../../nepomuk/core/resource.cpp:280
#25 0x00007f0b74ab29d0 in Nepomuk::Resource::rating (this=0x7f0b5e552c80) at ../../../nepomuk/core/resource.cpp:800
#26 0x0000000000465b08 in KLoadMetaDataThread::run (this=0x1199e00) at ../../../../apps/dolphin/src/panels/information/kloadmetadatathread.cpp:95
#27 0x00007f0b72018775 in QThreadPrivate::start (arg=0x1199e00) at thread/qthread_unix.cpp:248
#28 0x00007f0b6ef4e9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#29 0x00007f0b719ef69d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#30 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f0b572cc710 (LWP 9083)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f0b72017ea3 in QMutexPrivate::wait (this=0x7f0b60084af0, timeout=-1) at thread/qmutex_unix.cpp:84
#2  0x00007f0b72013a05 in QMutex::lock (this=0x7f0b60084a80) at thread/qmutex.cpp:205
#3  0x00007f0b74ab444c in QMutexLocker::relock (this=0x7f0b60084a70) at /usr/include/qt4/QtCore/qmutex.h:120
#4  QMutexLocker (this=0x7f0b60084a70) at /usr/include/qt4/QtCore/qmutex.h:102
#5  Nepomuk::Types::EntityPrivate::init (this=0x7f0b60084a70) at ../../../nepomuk/core/ontology/entity.cpp:46
#6  0x00007f0b74ab8b92 in Nepomuk::Types::Class::isSubClassOf (this=0x7f0b572cb630, other=...) at ../../../nepomuk/core/ontology/class.cpp:489
#7  0x00007f0b74a9276a in Nepomuk::ResourceData::loadType (this=<value optimized out>, storedType=...) at ../../../nepomuk/core/resourcedata.cpp:379
#8  0x00007f0b74a94c47 in Nepomuk::ResourceData::load (this=<value optimized out>) at ../../../nepomuk/core/resourcedata.cpp:424
#9  0x00007f0b74a951b8 in Nepomuk::ResourceData::property (this=0x16e4180, uri=...) at ../../../nepomuk/core/resourcedata.cpp:271
#10 0x00007f0b74aafee2 in Nepomuk::Resource::property (this=<value optimized out>, uri=...) at ../../../nepomuk/core/resource.cpp:280
#11 0x00007f0b74ab29d0 in Nepomuk::Resource::rating (this=0x7f0b572cbc80) at ../../../nepomuk/core/resource.cpp:800
#12 0x0000000000465b08 in KLoadMetaDataThread::run (this=0x16da6d0) at ../../../../apps/dolphin/src/panels/information/kloadmetadatathread.cpp:95
#13 0x00007f0b72018775 in QThreadPrivate::start (arg=0x16da6d0) at thread/qthread_unix.cpp:248
#14 0x00007f0b6ef4e9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#15 0x00007f0b719ef69d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0b75d65760 (LWP 9073)):
[KCrash Handler]
#5  0x00007f0b72111d07 in QMetaObject::cast (this=0x6991a0, obj=0x13daef0) at kernel/qmetaobject.cpp:266
#6  0x00007f0b7211d7f1 in qt_qFindChildren_helper (parent=<value optimized out>, name=..., re=0x0, mo=..., list=0x7fff2cb3c350) at kernel/qobject.cpp:1928
#7  0x00007f0b7211d7bd in qt_qFindChildren_helper (parent=<value optimized out>, name=..., re=0x0, mo=..., list=0x7fff2cb3c350) at kernel/qobject.cpp:1937
#8  0x00007f0b7211d7bd in qt_qFindChildren_helper (parent=<value optimized out>, name=..., re=0x0, mo=..., list=0x7fff2cb3c350) at kernel/qobject.cpp:1937
#9  0x00007f0b7211d7bd in qt_qFindChildren_helper (parent=<value optimized out>, name=..., re=0x0, mo=..., list=0x7fff2cb3c350) at kernel/qobject.cpp:1937
#10 0x00007f0b7211d7bd in qt_qFindChildren_helper (parent=<value optimized out>, name=..., re=0x0, mo=..., list=0x7fff2cb3c350) at kernel/qobject.cpp:1937
#11 0x00007f0b73a630fc in qFindChildren<QWidget*> (widget=0x13daef0, item=0x15a4830) at /usr/include/qt4/QtCore/qobject.h:430
#12 QObject::findChildren<QWidget*> (widget=0x13daef0, item=0x15a4830) at /usr/include/qt4/QtCore/qobject.h:174
#13 KAcceleratorManagerPrivate::traverseChildren (widget=0x13daef0, item=0x15a4830) at ../../kdeui/shortcuts/kacceleratormanager.cpp:272
#14 0x00007f0b73a62c70 in KAcceleratorManagerPrivate::manageWidget (w=0xf36310, item=0x15a4830) at ../../kdeui/shortcuts/kacceleratormanager.cpp:401
#15 0x00007f0b73a63d02 in KAcceleratorManagerPrivate::manage (widget=0xf36310) at ../../kdeui/shortcuts/kacceleratormanager.cpp:189
#16 0x00007f0b73a63e0b in KAcceleratorManager::manage (widget=0xf36310, programmers_mode=false) at ../../kdeui/shortcuts/kacceleratormanager.cpp:505
#17 0x00007f0b73a653e6 in KCheckAccelerators::checkAccelerators (this=0xf25ab0, automatic=true) at ../../kdeui/shortcuts/kcheckaccelerators.cpp:243
#18 0x00007f0b73a6584e in KCheckAccelerators::autoCheckSlot (this=0xf25ab0) at ../../kdeui/shortcuts/kcheckaccelerators.cpp:197
#19 0x00007f0b73a658c8 in KCheckAccelerators::qt_metacall (this=0xf25ab0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff2cb3c710) at ./kcheckaccelerators.moc:74
#20 0x00007f0b7211fe3f in QMetaObject::activate (sender=0xf25ad0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3293
#21 0x00007f0b7211ca63 in QObject::event (this=0xf25ad0, e=0x7fff2cb3ce60) at kernel/qobject.cpp:1212
#22 0x00007f0b72cfa22c in QApplicationPrivate::notify_helper (this=0xdf8260, receiver=0xf25ad0, e=0x7fff2cb3ce60) at kernel/qapplication.cpp:4300
#23 0x00007f0b72d006fb in QApplication::notify (this=0x7fff2cb3d1b0, receiver=0xf25ad0, e=0x7fff2cb3ce60) at kernel/qapplication.cpp:4183
#24 0x00007f0b73a05526 in KApplication::notify (this=0x7fff2cb3d1b0, receiver=0xf25ad0, event=0x7fff2cb3ce60) at ../../kdeui/kernel/kapplication.cpp:302
#25 0x00007f0b7210d06c in QCoreApplication::notifyInternal (this=0x7fff2cb3d1b0, receiver=0xf25ad0, event=0x7fff2cb3ce60) at kernel/qcoreapplication.cpp:704
#26 0x00007f0b72139d42 in QCoreApplication::sendEvent (this=0xdfdc50) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#27 QTimerInfoList::activateTimers (this=0xdfdc50) at kernel/qeventdispatcher_unix.cpp:603
#28 0x00007f0b72136824 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#29 0x00007f0b6de058c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x00007f0b6de09748 in ?? () from /lib/libglib-2.0.so.0
#31 0x00007f0b6de098fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x00007f0b72136513 in QEventDispatcherGlib::processEvents (this=0xdcb770, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#33 0x00007f0b72daa46e in QGuiEventDispatcherGlib::processEvents (this=0x13daef0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00007f0b7210b992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#35 0x00007f0b7210bd6c in QEventLoop::exec (this=0x7fff2cb3d100, flags=) at kernel/qeventloop.cpp:201
#36 0x00007f0b7210faab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#37 0x000000000043b1c5 in main (argc=<value optimized out>, argv=<value optimized out>) at ../../../../apps/dolphin/src/main.cpp:101

Reported using DrKonqi