Bug 318954

Application: rekonq (2.2.1)
KDE Platform Version: 4.10.2
Qt Version: 4.8.4
Operating System: Linux 3.8.0-19-generic i686
Distribution: Ubuntu 13.04

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

Open a link from Muon software center and installing a program with the same program.

The crash can be reproduced sometimes.

-- Backtrace:
Application: rekonq (rekonq), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb23e6980 (LWP 6427))]

Thread 5 (Thread 0xafe0db40 (LWP 6428)):
#0  0xb77d7424 in __kernel_vsyscall ()
#1  0xb2d8184b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb75ccd7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb6bffae5 in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb6bffb1f in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb2d7dd78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb75bf3de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xaf32ab40 (LWP 6429)):
#0  0xb77d7424 in __kernel_vsyscall ()
#1  0xb2d8184b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb75ccd7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb6c30f63 in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb690fb1b in JSC::BlockAllocator::blockFreeingThreadMain() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb6c15982 in WTF::threadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#6  0xb6c30b12 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#7  0xb2d7dd78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0xb75bf3de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xae2a2b40 (LWP 6430)):
#0  0xb2d80c34 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb75ccfc4 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb305fd70 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb301c5bf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb301c831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb385cc3f in QEventDispatcherGlib::processEvents (this=0xad900468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb38293ec in QEventLoop::processEvents (this=this@entry=0xae2a2258, flags=...) at kernel/qeventloop.cpp:149
#7  0xb38296e1 in QEventLoop::exec (this=this@entry=0xae2a2258, flags=...) at kernel/qeventloop.cpp:204
#8  0xb3714fec in QThread::exec (this=this@entry=0x8a031e0) at thread/qthread.cpp:542
#9  0xb371514b in QThread::run (this=0x8a031e0) at thread/qthread.cpp:609
#10 0xb3717b18 in QThreadPrivate::start (arg=0x8a031e0) at thread/qthread_unix.cpp:338
#11 0xb2d7dd78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb75bf3de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xad602b40 (LWP 6432)):
#0  0xb77d7424 in __kernel_vsyscall ()
#1  0xb75d28e2 in clock_gettime () from /lib/i386-linux-gnu/libc.so.6
#2  0xb37760d5 in do_gettime (frac=0xad601f60, sec=0xad601f58) at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0xb385d80e in QTimerInfoList::updateCurrentTime (this=this@entry=0xacd02074) at kernel/qeventdispatcher_unix.cpp:354
#5  0xb385db9a in QTimerInfoList::timerWait (this=0xacd02074, tm=...) at kernel/qeventdispatcher_unix.cpp:461
#6  0xb385c373 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xad60208c) at kernel/qeventdispatcher_glib.cpp:136
#7  0xb385c40d in timerSourcePrepare (source=0xacd02040, timeout=0xad60208c) at kernel/qeventdispatcher_glib.cpp:169
#8  0xb301bd21 in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0xb301c5cf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0xb301c831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#11 0xb385cc3f in QEventDispatcherGlib::processEvents (this=0xacd00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#12 0xb38293ec in QEventLoop::processEvents (this=this@entry=0xad602228, flags=...) at kernel/qeventloop.cpp:149
#13 0xb38296e1 in QEventLoop::exec (this=this@entry=0xad602228, flags=...) at kernel/qeventloop.cpp:204
#14 0xb3714fec in QThread::exec (this=this@entry=0x8ca9bb0) at thread/qthread.cpp:542
#15 0xb3808f2d in QInotifyFileSystemWatcherEngine::run (this=0x8ca9bb0) at io/qfilesystemwatcher_inotify.cpp:256
#16 0xb3717b18 in QThreadPrivate::start (arg=0x8ca9bb0) at thread/qthread_unix.cpp:338
#17 0xb2d7dd78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#18 0xb75bf3de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb23e6980 (LWP 6427)):
[KCrash Handler]
#7  0xad66520b in ?? ()
#8  0xb69fd9e6 in JSC::Interpreter::execute(JSC::ProgramExecutable*, JSC::ExecState*, JSC::JSObject*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#9  0xb6b075e8 in JSC::evaluate(JSC::ExecState*, JSC::SourceCode const&, JSC::JSValue, JSC::JSValue*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#10 0xb55c7757 in WebCore::ScriptController::evaluateInWorld(WebCore::ScriptSourceCode const&, WebCore::DOMWrapperWorld*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#11 0xb55c7f1b in WebCore::ScriptController::evaluate(WebCore::ScriptSourceCode const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#12 0xb5809965 in WebCore::ScriptElement::executeScript(WebCore::ScriptSourceCode const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#13 0xb580cf4d in WebCore::ScriptElement::prepareScript(WTF::TextPosition const&, WebCore::ScriptElement::LegacyTypeSupport) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#14 0xb59f059e in WebCore::HTMLScriptRunner::runScript(WebCore::Element*, WTF::TextPosition const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#15 0xb59f119c in WebCore::HTMLScriptRunner::execute(WTF::PassRefPtr<WebCore::Element>, WTF::TextPosition const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#16 0xb59d42e5 in WebCore::HTMLDocumentParser::runScriptsForPausedTreeBuilder() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#17 0xb59d43ce in WebCore::HTMLDocumentParser::canTakeNextToken(WebCore::HTMLDocumentParser::SynchronousMode, WebCore::PumpSession&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#18 0xb59d741a in WebCore::HTMLDocumentParser::pumpTokenizer(WebCore::HTMLDocumentParser::SynchronousMode) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#19 0xb59da128 in WebCore::HTMLDocumentParser::resumeParsingAfterScriptExecution() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#20 0xb59da3f8 in WebCore::HTMLDocumentParser::executeScriptsWaitingForStylesheets() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#21 0xb5797e89 in WebCore::Document::didRemoveAllPendingStylesheet() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#22 0xb57a721a in WebCore::DocumentStyleSheetCollection::removePendingSheet(WebCore::DocumentStyleSheetCollection::RemovePendingSheetNotificationType) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#23 0xb5973acc in WebCore::HTMLLinkElement::removePendingSheet(WebCore::HTMLLinkElement::RemovePendingSheetNotificationType) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#24 0xb5973b16 in WebCore::HTMLLinkElement::sheetLoaded() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#25 0xb57582f3 in WebCore::StyleSheetContents::checkLoaded() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#26 0xb5974480 in WebCore::HTMLLinkElement::setCSSStyleSheet(WTF::String const&, WebCore::KURL const&, WTF::String const&, WebCore::CachedCSSStyleSheet const*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#27 0xb5b291f4 in WebCore::CachedCSSStyleSheet::checkNotify() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#28 0xb5b28f6e in WebCore::CachedCSSStyleSheet::data(WTF::PassRefPtr<WebCore::ResourceBuffer>, bool) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#29 0xb5ba15a5 in WebCore::SubresourceLoader::didFinishLoading(double) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#30 0xb5b9422b in WebCore::ResourceLoader::didFinishLoading(WebCore::ResourceHandle*, double) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#31 0xb5f6d0c8 in WebCore::QNetworkReplyHandler::finish() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#32 0xb5f6ce87 in WebCore::QNetworkReplyHandlerCallQueue::flush() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#33 0xb5f6cff3 in WebCore::QNetworkReplyHandlerCallQueue::push(void (WebCore::QNetworkReplyHandler::*)()) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#34 0xb5f6d51f in WebCore::QNetworkReplyWrapper::didReceiveFinished() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#35 0xb5f6dcb5 in WebCore::QNetworkReplyWrapper::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) [clone .part.56] () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#36 0xb3840b56 in QMetaObject::activate (sender=sender@entry=0xc65da20, m=m@entry=0xb48b62e4 <QNetworkReply::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#37 0xb4864e45 in QNetworkReply::finished (this=this@entry=0xc65da20) at .moc/release-shared/moc_qnetworkreply.cpp:166
#38 0xb48650ec in qt_static_metacall (_a=0xbfda9794, _id=1, _o=0xc65da20, _c=<optimized out>) at .moc/release-shared/moc_qnetworkreply.cpp:107
#39 QNetworkReply::qt_static_metacall (_o=0xc65da20, _c=QMetaObject::InvokeMetaMethod, _id=1, _a=0xbfda9794) at .moc/release-shared/moc_qnetworkreply.cpp:100
#40 0xb38337ad in QMetaMethod::invoke (this=0xbfda98c4, object=0xc65da20, connectionType=Qt::DirectConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#41 0xb3835e29 in QMetaObject::invokeMethod (obj=obj@entry=0xc65da20, member=member@entry=0xb4e3c195 "finished", type=type@entry=Qt::AutoConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#42 0xb4ca6a38 in invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=type@entry=Qt::AutoConnection, member=0xb4e3c195 "finished", obj=0xc65da20) at /usr/include/qt4/QtCore/qobjectdefs.h:418
#43 KDEPrivate::AccessManagerReply::emitFinished (this=this@entry=0xc65da20, state=state@entry=true, type=type@entry=Qt::AutoConnection) at ../../kio/kio/accessmanagerreply_p.cpp:484
#44 0xb4ca8da8 in KDEPrivate::AccessManagerReply::slotResult (this=0xc65da20, kJob=0xb9e3080) at ../../kio/kio/accessmanagerreply_p.cpp:427
#45 0xb3840b56 in QMetaObject::activate (sender=sender@entry=0xb9e3080, m=m@entry=0xb3c5b46c <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0xbfda9ce8) at kernel/qobject.cpp:3539
#46 0xb3aa3cd5 in KJob::result (this=this@entry=0xb9e3080, _t1=_t1@entry=0xb9e3080) at ./kjob.moc:208
#47 0xb3aa3d28 in KJob::emitResult (this=this@entry=0xb9e3080) at ../../kdecore/jobs/kjob.cpp:318
#48 0xb4cecc3d in KIO::SimpleJob::slotFinished (this=this@entry=0xb9e3080) at ../../kio/kio/job.cpp:494
#49 0xb4ced18d in KIO::TransferJob::slotFinished (this=0xb9e3080) at ../../kio/kio/job.cpp:1081
#50 0xb4ceb498 in qt_static_metacall (_a=0xbfda9f0c, _id=7, _o=0xb9e3080, _c=<optimized out>) at ./jobclasses.moc:388
#51 KIO::TransferJob::qt_static_metacall (_o=0xb9e3080, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfda9f0c) at ./jobclasses.moc:375
#52 0xb3840b56 in QMetaObject::activate (sender=sender@entry=0xa3e37b8, m=m@entry=0xb4ebe480 <KIO::SlaveInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#53 0xb4d968e5 in KIO::SlaveInterface::finished (this=this@entry=0xa3e37b8) at ./slaveinterface.moc:185
#54 0xb4d99de3 in KIO::SlaveInterface::dispatch (this=0xa3e37b8, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:172
#55 0xb4d9661a in KIO::SlaveInterface::dispatch (this=0xa3e37b8) at ../../kio/kio/slaveinterface.cpp:88
#56 0xb4d894e8 in KIO::Slave::gotInput (this=this@entry=0xa3e37b8) at ../../kio/kio/slave.cpp:344
#57 0xb4d89b44 in KIO::Slave::qt_static_metacall (_o=0xa3e37b8, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfdaa1bc) at ./slave.moc:57
#58 0xb3840b56 in QMetaObject::activate (sender=sender@entry=0xa3dfe78, m=m@entry=0xb4ebb110 <KIO::Connection::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#59 0xb4cb0c15 in KIO::Connection::readyRead (this=0xa3dfe78) at ./connection.moc:106
#60 0xb4cb11f8 in dequeue (this=<optimized out>) at ../../kio/kio/connection.cpp:82
#61 KIO::ConnectionPrivate::dequeue (this=0x89103a8) at ../../kio/kio/connection.cpp:71
#62 0xb383cb4a in QMetaCallEvent::placeMetaCall (this=0xc79d290, object=0xa3dfe78) at kernel/qobject.cpp:524
#63 0xb384648b in QObject::event (this=0xa3dfe78, e=0xc79d290) at kernel/qobject.cpp:1194
#64 0xb3d9dc7c in QApplicationPrivate::notify_helper (this=0x88af380, receiver=0xa3dfe78, e=0xc79d290) at kernel/qapplication.cpp:4567
#65 0xb3da0b94 in QApplication::notify (this=0xc79d290, receiver=0xa3dfe78, e=0xc79d290) at kernel/qapplication.cpp:3949
#66 0xb50a8d01 in KApplication::notify (this=0xbfdaaa68, receiver=0xa3dfe78, event=0xc79d290) at ../../kdeui/kernel/kapplication.cpp:311
#67 0xb382a90e in QCoreApplication::notifyInternal (this=0xbfdaaa68, receiver=0xa3dfe78, event=0xc79d290) at kernel/qcoreapplication.cpp:946
#68 0xb382e721 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#69 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x887d128) at kernel/qcoreapplication.cpp:1570
#70 0xb382ea8c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1463
#71 0xb385caa4 in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#72 postEventSourceDispatch (s=0x88b1120) at kernel/qeventdispatcher_glib.cpp:279
#73 0xb301c3b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#74 0xb301c750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#75 0xb301c831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#76 0xb385cc21 in QEventDispatcherGlib::processEvents (this=this@entry=0x887def0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#77 0xb3e54a5a in QGuiEventDispatcherGlib::processEvents (this=0x887def0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#78 0xb38293ec in QEventLoop::processEvents (this=this@entry=0xbfdaa998, flags=...) at kernel/qeventloop.cpp:149
#79 0xb38296e1 in QEventLoop::exec (this=this@entry=0xbfdaa998, flags=...) at kernel/qeventloop.cpp:204
#80 0xb382f3fa in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#81 0xb3d9bfc4 in QApplication::exec () at kernel/qapplication.cpp:3828
#82 0xb7795725 in kdemain (argc=2, argv=0xbfdaab54) at /build/buildd/rekonq-2.2.1/src/main.cpp:240
#83 0x0804854b in main (argc=2, argv=0xbfdaab54) at /build/buildd/rekonq-2.2.1/obj-i686-linux-gnu/src/rekonq_dummy.cpp:3

Possible duplicates by query: bug 318836, bug 315567, bug 314808, bug 306900, bug 305032.

Reported using DrKonqi