Bug 353230

Application: rekonq (2.4.2)
KDE Platform Version: 4.14.8
Qt Version: 4.8.6
Operating System: Linux 3.19.0-30-generic x86_64
Distribution: Ubuntu 15.04

-- Information about the crash:
- What I was doing when the application crashed:
Surfing on the internet on a flights comparison site, changing the dae of the flights I wanted to see, it crashed several times

The crash can be reproduced sometimes.

-- Backtrace:
Application: rekonq (rekonq), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f216ba927c0 (LWP 2451))]

Thread 6 (Thread 0x7f21556c7700 (LWP 2452)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f216a6a081d in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f216a6a0859 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f21621836aa in start_thread (arg=0x7f21556c7700) at pthread_create.c:333
#4  0x00007f216b298eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7f21134f7700 (LWP 2454)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f216a3e120d in JSC::BlockAllocator::blockFreeingThreadMain() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f216a6cffd6 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f21621836aa in start_thread (arg=0x7f21134f7700) at pthread_create.c:333
#4  0x00007f216b298eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7f2111f0d700 (LWP 2455)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2169b8b17b in WebCore::IconDatabase::syncThreadMainLoop() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007f2169b8b364 in WebCore::IconDatabase::iconDatabaseSyncThread() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007f216a6cffd6 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#4  0x00007f21621836aa in start_thread (arg=0x7f2111f0d700) at pthread_create.c:333
#5  0x00007f216b298eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f21115ed700 (LWP 2456)):
#0  0x00007f216b28d8dd in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2162de5ebc in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2162de5fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f21657b287e in QEventDispatcherGlib::processEvents (this=0x7f20fc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007f2165781d21 in QEventLoop::processEvents (this=this@entry=0x7f21115ece10, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f2165782085 in QEventLoop::exec (this=this@entry=0x7f21115ece10, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007f2165675e89 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:538
#7  0x00007f21656786ff in QThreadPrivate::start (arg=0x1606d60) at thread/qthread_unix.cpp:349
#8  0x00007f21621836aa in start_thread (arg=0x7f21115ed700) at pthread_create.c:333
#9  0x00007f216b298eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2103dad700 (LWP 2458)):
#0  0x00007f216b28949d in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2162e292f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2162de596c in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2162de5e60 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2162de5fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f21657b287e in QEventDispatcherGlib::processEvents (this=0x7f20f80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#6  0x00007f2165781d21 in QEventLoop::processEvents (this=this@entry=0x7f2103dacdc0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007f2165782085 in QEventLoop::exec (this=this@entry=0x7f2103dacdc0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007f2165675e89 in QThread::exec (this=this@entry=0x18847d0) at thread/qthread.cpp:538
#9  0x00007f2165762493 in QInotifyFileSystemWatcherEngine::run (this=0x18847d0) at io/qfilesystemwatcher_inotify.cpp:265
#10 0x00007f21656786ff in QThreadPrivate::start (arg=0x18847d0) at thread/qthread_unix.cpp:349
#11 0x00007f21621836aa in start_thread (arg=0x7f2103dad700) at pthread_create.c:333
#12 0x00007f216b298eed in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f216ba927c0 (LWP 2451)):
[KCrash Handler]
#6  operator QtSharedPointer::ExternalRefCountData* (this=0x82) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:160
#7  QtSharedPointer::ExternalRefCountData::getAndRef (obj=obj@entry=0x1eead90) at tools/qsharedpointer.cpp:1255
#8  0x00007f21671fef13 in QWeakPointer<QObject> (ptr=0x1eead90, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:595
#9  operator=<QObject> (ptr=0x1eead90, this=0x3351c10) at ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:600
#10 QNetworkRequest::setOriginatingObject (this=0x7ffe7bec3890, object=0x1eead90) at access/qnetworkrequest.cpp:565
#11 0x00007f2169b26254 in WebCore::ResourceRequest::toNetworkRequest(WebCore::NetworkingContext*) const () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#12 0x00007f2169b2c665 in WebCore::QNetworkReplyHandler::redirect(WebCore::ResourceResponse&, QUrl const&) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#13 0x00007f2169b2d4e2 in WebCore::QNetworkReplyHandler::sendResponseIfNeeded() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#14 0x00007f2169b2b2cf in WebCore::QNetworkReplyHandlerCallQueue::flush() [clone .part.56] () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#15 0x00007f2169b2bc64 in WebCore::QNetworkReplyWrapper::receiveMetaData() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#16 0x00007f21657981ec in QMetaObject::activate (sender=0x5741d90, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3567
#17 0x00007f216578ba0c in QMetaMethod::invoke (this=this@entry=0x7ffe7bec41e0, object=object@entry=0x5741d90, connectionType=Qt::DirectConnection, connectionType@entry=Qt::AutoConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#18 0x00007f216578df4e in QMetaObject::invokeMethod (obj=obj@entry=0x5741d90, member=member@entry=0x7f21682d88a5 "finished", type=type@entry=Qt::AutoConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#19 0x00007f2168154a42 in invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=Qt::AutoConnection, member=0x7f21682d88a5 "finished", obj=0x5741d90) at /usr/include/qt4/QtCore/qobjectdefs.h:418
#20 KDEPrivate::AccessManagerReply::emitFinished (this=this@entry=0x5741d90, state=state@entry=true, type=type@entry=Qt::AutoConnection) at ../../kio/kio/accessmanagerreply_p.cpp:485
#21 0x00007f2168157080 in KDEPrivate::AccessManagerReply::slotResult (this=0x5741d90, kJob=0x56b3620) at ../../kio/kio/accessmanagerreply_p.cpp:427
#22 0x00007f21657981ec in QMetaObject::activate (sender=sender@entry=0x56b3620, m=m@entry=0x7f2166237f20 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffe7bec46e0) at kernel/qobject.cpp:3567
#23 0x00007f2165e96372 in KJob::result (this=this@entry=0x56b3620, _t1=_t1@entry=0x56b3620) at ./kjob.moc:207
#24 0x00007f2165e963c0 in KJob::emitResult (this=this@entry=0x56b3620) at ../../kdecore/jobs/kjob.cpp:318
#25 0x00007f21681986fb in KIO::SimpleJob::slotFinished (this=this@entry=0x56b3620) at ../../kio/kio/job.cpp:496
#26 0x00007f2168199b21 in KIO::TransferJob::slotFinished (this=0x56b3620) at ../../kio/kio/job.cpp:1110
#27 0x00007f21657981ec in QMetaObject::activate (sender=0x579faa0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3567
#28 0x00007f2168244738 in KIO::SlaveInterface::dispatch (this=0x1eead90, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:176
#29 0x00007f216824169d in KIO::SlaveInterface::dispatch (this=0x579faa0) at ../../kio/kio/slaveinterface.cpp:92
#30 0x00007f216823409e in KIO::Slave::gotInput (this=0x579faa0) at ../../kio/kio/slave.cpp:344
#31 0x00007f21657981ec in QMetaObject::activate (sender=0x2198aa0, m=m@entry=0x7f216854ff60 <KIO::Connection::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3567
#32 0x00007f216815eac0 in KIO::Connection::readyRead (this=<optimized out>) at ./connection.moc:105
#33 0x00007f216815f029 in KIO::ConnectionPrivate::dequeue (this=0x5640ed0) at ../../kio/kio/connection.cpp:82
#34 0x00007f216579c8e1 in QObject::event (this=0x2198aa0, e=<optimized out>) at kernel/qobject.cpp:1222
#35 0x00007f216640d9bc in QApplicationPrivate::notify_helper (this=this@entry=0x13f0d50, receiver=receiver@entry=0x2198aa0, e=e@entry=0x56e7560) at kernel/qapplication.cpp:4570
#36 0x00007f21664144d8 in QApplication::notify (this=this@entry=0x7ffe7bec5450, receiver=receiver@entry=0x2198aa0, e=e@entry=0x56e7560) at kernel/qapplication.cpp:4356
#37 0x00007f2168795c2a in KApplication::notify (this=0x7ffe7bec5450, receiver=0x2198aa0, event=0x56e7560) at ../../kdeui/kernel/kapplication.cpp:311
#38 0x00007f21657831cd in QCoreApplication::notifyInternal (this=0x7ffe7bec5450, receiver=receiver@entry=0x2198aa0, event=event@entry=0x56e7560) at kernel/qcoreapplication.cpp:955
#39 0x00007f2165786a71 in sendEvent (event=0x56e7560, receiver=0x2198aa0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#40 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x13bb150) at kernel/qcoreapplication.cpp:1579
#41 0x00007f2165786f03 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1472
#42 0x00007f21657b26ee in sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#43 postEventSourceDispatch (s=0x13ffaa0) at kernel/qeventdispatcher_glib.cpp:300
#44 0x00007f2162de5c3d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f2162de5f20 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f2162de5fcc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007f21657b285e in QEventDispatcherGlib::processEvents (this=0x13ef930, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#48 0x00007f21664b5c66 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#49 0x00007f2165781d21 in QEventLoop::processEvents (this=this@entry=0x7ffe7bec5340, flags=...) at kernel/qeventloop.cpp:149
#50 0x00007f2165782085 in QEventLoop::exec (this=this@entry=0x7ffe7bec5340, flags=...) at kernel/qeventloop.cpp:204
#51 0x00007f2165787b09 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1227
#52 0x00007f216640bc1c in QApplication::exec () at kernel/qapplication.cpp:3828
#53 0x00007f216b679b1d in kdemain (argc=1, argv=0x7ffe7bec55a8) at /build/buildd/rekonq-2.4.2/src/main.cpp:242
#54 0x00007f216b1b2a40 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=1, argv=0x7ffe7bec55a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe7bec5598) at libc-start.c:289
#55 0x00000000004006fe in _start ()

Possible duplicates by query: bug 337577, bug 337139, bug 333940, bug 333783, bug 331792.

Reported using DrKonqi