Bug 337139

Application: rekonq (2.4.2)
KDE Platform Version: 4.13.2
Qt Version: 4.8.6
Operating System: Linux 3.13.0-30-generic i686
Distribution: Ubuntu 14.04 LTS

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

Rekonq crashes time to time while I open videos, go from one page to another and so on. I do not know if all crashes are related to each other. I will report all crashes. It turns it to an unreliable web browser.

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 0xb234e740 (LWP 2236))]

Thread 8 (Thread 0xaf5e8b40 (LWP 2237)):
#0  0xb777f424 in __kernel_vsyscall ()
#1  0xb2d46d4b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb755b8ec in __pthread_cond_wait (cond=0xb7455cb0 <WTF::pageheap_memory+20720>, mutex=0xb7455c98 <WTF::pageheap_memory+20696>) at forward.c:149
#3  0xb6bdd9ac in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb6bdd9ff in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb2d42f70 in start_thread (arg=0xaf5e8b40) at pthread_create.c:312
#6  0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 7 (Thread 0xae3eab40 (LWP 2245)):
#0  0xb777f424 in __kernel_vsyscall ()
#1  0xb2d46d4b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb755b8ec in __pthread_cond_wait (cond=0xaed347dc, mutex=0xaed347c4) at forward.c:149
#3  0xb6c0c9f3 in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb68e8574 in JSC::BlockAllocator::blockFreeingThreadMain() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb6bf37c6 in WTF::threadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#6  0xb6c0c369 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#7  0xb2d42f70 in start_thread (arg=0xae3eab40) at pthread_create.c:312
#8  0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 6 (Thread 0xad0ffb40 (LWP 2246)):
#0  0xb777f424 in __kernel_vsyscall ()
#1  0xb2d46d4b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb755b8ec in __pthread_cond_wait (cond=0xaed3cbf0, mutex=0xaed3cbd8) at forward.c:149
#3  0xb6c0c9f3 in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb5f8be64 in WebCore::IconDatabase::syncThreadMainLoop() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb5f8dce4 in WebCore::IconDatabase::iconDatabaseSyncThread() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#6  0xb6bf37c6 in WTF::threadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#7  0xb6c0c369 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#8  0xb2d42f70 in start_thread (arg=0xad0ffb40) at pthread_create.c:312
#9  0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 5 (Thread 0xabe53b40 (LWP 2250)):
#0  0xb3038d2e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb3039138 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2ff4532 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb385995f in QEventDispatcherGlib::processEvents (this=0xad402ae0, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#4  0xb3828823 in QEventLoop::processEvents (this=this@entry=0xabe53288, flags=...) at kernel/qeventloop.cpp:149
#5  0xb3828b49 in QEventLoop::exec (this=this@entry=0xabe53288, flags=...) at kernel/qeventloop.cpp:204
#6  0xb371523d in QThread::exec (this=this@entry=0x89b49a8) at thread/qthread.cpp:537
#7  0xb371538b in QThread::run (this=0x89b49a8) at thread/qthread.cpp:604
#8  0xb3717b6f in QThreadPrivate::start (arg=0x89b49a8) at thread/qthread_unix.cpp:349
#9  0xb2d42f70 in start_thread (arg=0xabe53b40) at pthread_create.c:312
#10 0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 4 (Thread 0xaafb7b40 (LWP 2252)):
#0  0xb2ff1520 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2ff3d51 in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2ff437a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ff4528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb385995f in QEventDispatcherGlib::processEvents (this=0xad600478, flags=...) at kernel/qeventdispatcher_glib.cpp:436
#5  0xb3828823 in QEventLoop::processEvents (this=this@entry=0xaafb7258, flags=...) at kernel/qeventloop.cpp:149
#6  0xb3828b49 in QEventLoop::exec (this=this@entry=0xaafb7258, flags=...) at kernel/qeventloop.cpp:204
#7  0xb371523d in QThread::exec (this=this@entry=0x8c81698) at thread/qthread.cpp:537
#8  0xb3808c44 in QInotifyFileSystemWatcherEngine::run (this=0x8c81698) at io/qfilesystemwatcher_inotify.cpp:265
#9  0xb3717b6f in QThreadPrivate::start (arg=0x8c81698) at thread/qthread_unix.cpp:349
#10 0xb2d42f70 in start_thread (arg=0xaafb7b40) at pthread_create.c:312
#11 0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 3 (Thread 0xa88afb40 (LWP 2766)):
#0  __x86.get_pc_thunk.bx () at ../sysdeps/i386/i686/multiarch/strcat.S:55
#1  0xb755bb08 in pthread_mutex_unlock (mutex=0xeb5ceb8) at forward.c:194
#2  0xb3039140 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ff3372 in g_main_context_acquire () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2ff4288 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2ff476b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xa495be9a in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#7  0xb301a9ca in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2d42f70 in start_thread (arg=0xa88afb40) at pthread_create.c:312
#9  0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 2 (Thread 0xa98b1b40 (LWP 2767)):
#0  0xb2ff3bdc in g_main_context_query () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2ff4346 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2ff4528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2ff457e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb301a9ca in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2d42f70 in start_thread (arg=0xa98b1b40) at pthread_create.c:312
#6  0xb754e70e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:129

Thread 1 (Thread 0xb234e740 (LWP 2236)):
[KCrash Handler]
#7  operator QtSharedPointer::ExternalRefCountData* (this=0x408fc048) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:169
#8  QtSharedPointer::ExternalRefCountData::getAndRef (obj=obj@entry=0xefae8f8) at tools/qsharedpointer.cpp:1255
#9  0xb482efb1 in QWeakPointer<QObject> (ptr=0xefae8f8, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:595
#10 operator=<QObject> (ptr=0xefae8f8, this=0xee1b960) at ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:600
#11 QNetworkRequest::setOriginatingObject (this=0xbfb27924, object=0xefae8f8) at access/qnetworkrequest.cpp:565
#12 0xb5f1e4b0 in WebCore::ResourceRequest::toNetworkRequest(WebCore::NetworkingContext*) const () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#13 0xb5f25190 in WebCore::QNetworkReplyHandler::redirect(WebCore::ResourceResponse&, QUrl const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#14 0xb5f26037 in WebCore::QNetworkReplyHandler::sendResponseIfNeeded() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#15 0xb5f23bc6 in WebCore::QNetworkReplyHandlerCallQueue::flush() [clone .part.55] () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#16 0xb5f246e1 in WebCore::QNetworkReplyWrapper::receiveMetaData() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#17 0xb383f0f7 in QMetaObject::activate (sender=sender@entry=0xe8b7390, m=m@entry=0xb4906364 <QNetworkReply::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#18 0xb48b34c5 in QNetworkReply::finished (this=0xe8b7390) at .moc/release-shared/moc_qnetworkreply.cpp:165
#19 0xb48b36f0 in QNetworkReply::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0xbfb27e54, _c=<optimized out>) at .moc/release-shared/moc_qnetworkreply.cpp:106
#20 0xb38329f4 in QMetaMethod::invoke (this=this@entry=0xbfb27f74, object=0xe8b7390, connectionType=<optimized out>, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#21 0xb3834fd3 in QMetaObject::invokeMethod (obj=obj@entry=0xe8b7390, member=member@entry=0xb4ea7d55 "finished", type=type@entry=Qt::AutoConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#22 0xb4d17228 in invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=type@entry=Qt::AutoConnection, member=0xb4ea7d55 "finished", obj=0xe8b7390) at /usr/include/qt4/QtCore/qobjectdefs.h:418
#23 KDEPrivate::AccessManagerReply::emitFinished (this=this@entry=0xe8b7390, state=state@entry=true, type=type@entry=Qt::AutoConnection) at ../../kio/kio/accessmanagerreply_p.cpp:485
#24 0xb4d191b4 in KDEPrivate::AccessManagerReply::slotResult (this=0xe8b7390, kJob=0xefcc788) at ../../kio/kio/accessmanagerreply_p.cpp:427
#25 0xb4d19cb9 in KDEPrivate::AccessManagerReply::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0xbfb28378, _c=<optimized out>) at ./accessmanagerreply_p.moc:60
#26 0xb383f0f7 in QMetaObject::activate (sender=sender@entry=0xefcc788, m=m@entry=0xb3cc24cc <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0xbfb28378) at kernel/qobject.cpp:3539
#27 0xb3b1e095 in KJob::result (this=this@entry=0xefcc788, _t1=_t1@entry=0xefcc788) at ./kjob.moc:207
#28 0xb3b1e0e2 in KJob::emitResult (this=this@entry=0xefcc788) at ../../kdecore/jobs/kjob.cpp:318
#29 0xb4d59fd1 in KIO::SimpleJob::slotFinished (this=0xefcc788) at ../../kio/kio/job.cpp:496
#30 0xb4d5b3d9 in KIO::TransferJob::slotFinished (this=0xefcc788) at ../../kio/kio/job.cpp:1110
#31 0xb4d5bfe0 in KIO::TransferJob::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=0xbfb28578, _c=<optimized out>) at ./jobclasses.moc:387
#32 0xb383f0f7 in QMetaObject::activate (sender=sender@entry=0xf1381d8, m=m@entry=0xb4f20480 <KIO::SlaveInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#33 0xb4e06055 in KIO::SlaveInterface::finished (this=this@entry=0xf1381d8) at ./slaveinterface.moc:184
#34 0xb4e07a9d in KIO::SlaveInterface::dispatch (this=0xf1381d8, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:176
#35 0xb4e04e1e in KIO::SlaveInterface::dispatch (this=0xf1381d8) at ../../kio/kio/slaveinterface.cpp:92
#36 0xb4df8440 in KIO::Slave::gotInput (this=this@entry=0xf1381d8) at ../../kio/kio/slave.cpp:344
#37 0xb4df85ec in KIO::Slave::qt_static_metacall (_o=_o@entry=0xf1381d8, _c=_c@entry=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfb287c8) at ./slave.moc:56
#38 0xb383f0f7 in QMetaObject::activate (sender=sender@entry=0xf1045d8, m=m@entry=0xb4f1d190 <KIO::Connection::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3539
#39 0xb4d213b5 in KIO::Connection::readyRead (this=0xf1045d8) at ./connection.moc:105
#40 0xb4d21b60 in KIO::ConnectionPrivate::dequeue (this=0xf053ca8) at ../../kio/kio/connection.cpp:82
#41 0xb383b8aa in QMetaCallEvent::placeMetaCall (this=0xf0868e8, object=0xf1045d8) at kernel/qobject.cpp:524
#42 0xb38436fb in QObject::event (this=0xf1045d8, e=0xf0868e8) at kernel/qobject.cpp:1194
#43 0xb3e037f4 in QApplicationPrivate::notify_helper (this=0x8806ca0, receiver=0xf1045d8, e=0xf0868e8) at kernel/qapplication.cpp:4567
#44 0xb3e0a2d3 in QApplication::notify (this=0xbfb28e90, receiver=receiver@entry=0xf1045d8, e=e@entry=0xf0868e8) at kernel/qapplication.cpp:4353
#45 0xb50fd1f4 in KApplication::notify (this=0xbfb28e90, receiver=0xf1045d8, event=0xf0868e8) at ../../kdeui/kernel/kapplication.cpp:311
#46 0xb3829e4a in QCoreApplication::notifyInternal (this=0xbfb28e90, receiver=receiver@entry=0xf1045d8, event=event@entry=0xf0868e8) at kernel/qcoreapplication.cpp:953
#47 0xb382d70d in sendEvent (event=0xf0868e8, receiver=0xf1045d8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#48 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x87d3198) at kernel/qcoreapplication.cpp:1577
#49 0xb382dc1c in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1470
#50 0xb385a23e in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#51 postEventSourceDispatch (s=0x88101b8) at kernel/qeventdispatcher_glib.cpp:287
#52 0xb2ff41e3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#53 0xb2ff4468 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#54 0xb2ff4528 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#55 0xb385993b in QEventDispatcherGlib::processEvents (this=this@entry=0x8803000, flags=...) at kernel/qeventdispatcher_glib.cpp:434
#56 0xb3eb85de in QGuiEventDispatcherGlib::processEvents (this=0x8803000, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#57 0xb3828823 in QEventLoop::processEvents (this=this@entry=0xbfb28dc8, flags=...) at kernel/qeventloop.cpp:149
#58 0xb3828b49 in QEventLoop::exec (this=this@entry=0xbfb28dc8, flags=...) at kernel/qeventloop.cpp:204
#59 0xb382e8fe in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#60 0xb3e01a24 in QApplication::exec () at kernel/qapplication.cpp:3828
#61 0xb773ea98 in kdemain (argc=1, argv=0xbfb28f84) at /build/buildd/rekonq-2.4.2/src/main.cpp:242
#62 0x0804854b in main (argc=1, argv=0xbfb28f84) at /build/buildd/rekonq-2.4.2/obj-i686-linux-gnu/src/rekonq_dummy.cpp:3

Possible duplicates by query: bug 333940, bug 333783, bug 331792, bug 331598, bug 328915.

Reported using DrKonqi