Application: rekonq (2.4.2)
KDE Platform Version: 4.14.16
Qt Version: 4.8.7
Operating System: Linux 4.4.0-34-generic x86_64
Distribution: Ubuntu 16.04.1 LTS

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

I was doing a typing test and the browser crashed without warning.

The crash can be reproduced every time.

-- 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 0x7efdda3cc940 (LWP 3892))]

Thread 9 (Thread 0x7efd5a7fc700 (LWP 3921)):
#0  0x00007efdd1570e24 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007efdd1571340 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efdd15714ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdd401d2ce in QEventDispatcherGlib::processEvents (this=0x7efd440008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007efdd3feb18f in QEventLoop::processEvents (this=this@entry=0x7efd5a7fbc90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007efdd3feb4f5 in QEventLoop::exec (this=this@entry=0x7efd5a7fbc90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007efdd3eda549 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:538
#7  0x00007efdd3edce3c in QThreadPrivate::start (arg=0x13b6830) at thread/qthread_unix.cpp:352
#8  0x00007efdd08866fa in start_thread (arg=0x7efd5a7fc700) at pthread_create.c:333
#9  0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7efd5b7fe700 (LWP 3919)):
#0  0x00007efdd9c6ce8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007efdd157139c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efdd15714ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdd401d2ce in QEventDispatcherGlib::processEvents (this=0x7efd4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007efdd3feb18f in QEventLoop::processEvents (this=this@entry=0x7efd5b7fdc90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007efdd3feb4f5 in QEventLoop::exec (this=this@entry=0x7efd5b7fdc90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007efdd3eda549 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:538
#7  0x00007efdd3edce3c in QThreadPrivate::start (arg=0x13b1080) at thread/qthread_unix.cpp:352
#8  0x00007efdd08866fa in start_thread (arg=0x7efd5b7fe700) at pthread_create.c:333
#9  0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7efd6cb51700 (LWP 3917)):
#0  0x00007efdd9c6ce8d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007efdd157139c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007efdd15714ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007efdd401d2ce in QEventDispatcherGlib::processEvents (this=0x7efd600008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#4  0x00007efdd3feb18f in QEventLoop::processEvents (this=this@entry=0x7efd6cb50c90, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007efdd3feb4f5 in QEventLoop::exec (this=this@entry=0x7efd6cb50c90, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007efdd3eda549 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:538
#7  0x00007efdd3edce3c in QThreadPrivate::start (arg=0x9f15e0) at thread/qthread_unix.cpp:352
#8  0x00007efdd08866fa in start_thread (arg=0x7efd6cb51700) at pthread_create.c:333
#9  0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7efd6e813700 (LWP 3911)):
#0  0x00007ffc2ffe9caf in clock_gettime ()
#1  0x00007efdd9c86fb6 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7efd6e8129a0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007efdd3f37625 in do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0x00007efdd401e165 in QTimerInfoList::updateCurrentTime (this=0x7efd5c002ee0) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0x7efd5c002ee0, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0x00007efdd401c99c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7efd6e812a74) at kernel/qeventdispatcher_glib.cpp:143
#7  0x00007efdd401ca65 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:176
#8  0x00007efdd157092d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007efdd15712cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007efdd15714ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007efdd401d2ce in QEventDispatcherGlib::processEvents (this=0x7efd5c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#12 0x00007efdd3feb18f in QEventLoop::processEvents (this=this@entry=0x7efd6e812c40, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007efdd3feb4f5 in QEventLoop::exec (this=this@entry=0x7efd6e812c40, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007efdd3eda549 in QThread::exec (this=this@entry=0xcc2510) at thread/qthread.cpp:538
#15 0x00007efdd3fcb223 in QInotifyFileSystemWatcherEngine::run (this=0xcc2510) at io/qfilesystemwatcher_inotify.cpp:265
#16 0x00007efdd3edce3c in QThreadPrivate::start (arg=0xcc2510) at thread/qthread_unix.cpp:352
#17 0x00007efdd08866fa in start_thread (arg=0x7efd6e813700) at pthread_create.c:333
#18 0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7efd6feff700 (LWP 3909)):
#0  0x00007ffc2ffe9caf in clock_gettime ()
#1  0x00007efdd9c86fb6 in __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7efd6fefe9f0) at ../sysdeps/unix/clock_gettime.c:115
#2  0x00007efdd3f37625 in do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at tools/qelapsedtimer_unix.cpp:127
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:144
#4  0x00007efdd401e165 in QTimerInfoList::updateCurrentTime (this=0x7efd64002ce0) at kernel/qeventdispatcher_unix.cpp:354
#5  QTimerInfoList::timerWait (this=0x7efd64002ce0, tm=...) at kernel/qeventdispatcher_unix.cpp:460
#6  0x00007efdd401c99c in timerSourcePrepareHelper (src=<optimized out>, timeout=0x7efd6fefeac4) at kernel/qeventdispatcher_glib.cpp:143
#7  0x00007efdd401ca65 in timerSourcePrepare (source=<optimized out>, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:176
#8  0x00007efdd157092d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007efdd15712cb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007efdd15714ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007efdd401d2ce in QEventDispatcherGlib::processEvents (this=0x7efd640008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:452
#12 0x00007efdd3feb18f in QEventLoop::processEvents (this=this@entry=0x7efd6fefec90, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007efdd3feb4f5 in QEventLoop::exec (this=this@entry=0x7efd6fefec90, flags=...) at kernel/qeventloop.cpp:204
#14 0x00007efdd3eda549 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:538
#15 0x00007efdd3edce3c in QThreadPrivate::start (arg=0x9291a0) at thread/qthread_unix.cpp:352
#16 0x00007efdd08866fa in start_thread (arg=0x7efd6feff700) at pthread_create.c:333
#17 0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7efd7c878700 (LWP 3908)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007efdd84e20a4 in WebCore::IconDatabase::syncThreadMainLoop() () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#2  0x00007efdd84e22e9 in WebCore::IconDatabase::iconDatabaseSyncThread() () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#3  0x00007efdd90fb876 in WTF::wtfThreadEntryPoint (param=0xc87990) at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/ThreadingPthreads.cpp:196
#4  0x00007efdd08866fa in start_thread (arg=0x7efd7c878700) at pthread_create.c:333
#5  0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7efd7e8ef700 (LWP 3895)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
#1  0x00007efdd90fbeda in WTF::ThreadCondition::timedWait (this=0x7efdc1c514a0, mutex=0x7efdc1c51478, absoluteTime=112215042.11425781) at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/ThreadingPthreads.cpp:400
#2  0x00007efdd8deb625 in JSC::BlockAllocator::blockFreeingThreadMain (this=0x7efdc1c51398) at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/JavaScriptCore/heap/BlockAllocator.cpp:89
#3  0x00007efdd90fb876 in WTF::wtfThreadEntryPoint (param=0x94d200) at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/ThreadingPthreads.cpp:196
#4  0x00007efdd08866fa in start_thread (arg=0x7efd7e8ef700) at pthread_create.c:333
#5  0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7efdc24dc700 (LWP 3893)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007efdd90c92dd in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7efdd9b5c674 <WTF::pageheap_memory+57556>) at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/FastMalloc.cpp:2575
#2  0x00007efdd90c9339 in WTF::TCMalloc_PageHeap::runScavengerThread (context=0x7efdd9b5c674 <WTF::pageheap_memory+57556>) at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/FastMalloc.cpp:1771
#3  0x00007efdd08866fa in start_thread (arg=0x7efdc24dc700) at pthread_create.c:333
#4  0x00007efdd9c78b5d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7efdda3cc940 (LWP 3892)):
[KCrash Handler]
#6  QBasicAtomicPointer<QtSharedPointer::ExternalRefCountData>::operator QtSharedPointer::ExternalRefCountData* (this=0x6572a8c362f2) at ../../include/QtCore/../../src/corelib/thread/qbasicatomic.h:160
#7  QtSharedPointer::ExternalRefCountData::getAndRef (obj=obj@entry=0x14970d0) at tools/qsharedpointer.cpp:1255
#8  0x00007efdd5a71b4f in QWeakPointer<QObject>::QWeakPointer<QObject> (ptr=0x14970d0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:595
#9  QWeakPointer<QObject>::operator=<QObject> (ptr=0x14970d0, this=<optimized out>) at ../../include/QtCore/../../src/corelib/tools/qsharedpointer_impl.h:600
#10 QNetworkRequest::setOriginatingObject (this=<optimized out>, object=0x14970d0) at access/qnetworkrequest.cpp:565
#11 0x00007efdd84734a7 in WebCore::ResourceRequest::toNetworkRequest(WebCore::NetworkingContext*) const () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#12 0x00007efdd8479d7d in WebCore::QNetworkReplyHandler::redirect(WebCore::ResourceResponse&, QUrl const&) () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#13 0x00007efdd847b066 in WebCore::QNetworkReplyHandler::sendResponseIfNeeded() () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#14 0x00007efdd84786e2 in WebCore::QNetworkReplyHandlerCallQueue::flush() [clone .part.51] () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#15 0x00007efdd84793df in WebCore::QNetworkReplyWrapper::receiveMetaData() () at /build/qtwebkit-source-Or8iUU/qtwebkit-source-2.3.2/Source/WTF/wtf/SegmentedVector.h:129
#16 0x00007efdd4001010 in QMetaObject::activate (sender=0x13e7510, m=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3567
#17 0x00007efdd3ff56b5 in QMetaMethod::invoke (this=this@entry=0x7ffc2ff75290, object=object@entry=0x13e7510, connectionType=Qt::DirectConnection, connectionType@entry=Qt::AutoConnection, returnValue=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1664
#18 0x00007efdd3ff7cce in QMetaObject::invokeMethod (obj=obj@entry=0x13e7510, member=member@entry=0x7efdd6b586c5 "finished", type=type@entry=Qt::AutoConnection, ret=..., val0=..., val1=..., val2=..., val3=..., val4=..., val5=..., val6=..., val7=..., val8=..., val9=...) at kernel/qmetaobject.cpp:1179
#19 0x00007efdd69c93b2 in QMetaObject::invokeMethod (val9=..., val8=..., val7=..., val6=..., val5=..., val4=..., val3=..., val2=..., val1=..., val0=..., type=Qt::AutoConnection, member=0x7efdd6b586c5 "finished", obj=0x13e7510) at /usr/include/qt4/QtCore/qobjectdefs.h:418
#20 KDEPrivate::AccessManagerReply::emitFinished (this=this@entry=0x13e7510, state=state@entry=true, type=type@entry=Qt::AutoConnection) at ../../kio/kio/accessmanagerreply_p.cpp:485
#21 0x00007efdd69cbc60 in KDEPrivate::AccessManagerReply::slotResult (this=0x13e7510, kJob=0xcd0470) at ../../kio/kio/accessmanagerreply_p.cpp:427
#22 0x00007efdd4001010 in QMetaObject::activate (sender=sender@entry=0xcd0470, m=m@entry=0x7efdd4aafb00 <KJob::staticMetaObject>, local_signal_index=local_signal_index@entry=3, argv=argv@entry=0x7ffc2ff75770) at kernel/qobject.cpp:3567
#23 0x00007efdd4706c92 in KJob::result (this=this@entry=0xcd0470, _t1=_t1@entry=0xcd0470) at ./kjob.moc:207
#24 0x00007efdd4706ce0 in KJob::emitResult (this=this@entry=0xcd0470) at ../../kdecore/jobs/kjob.cpp:318
#25 0x00007efdd6a0da1e in KIO::SimpleJob::slotFinished (this=this@entry=0xcd0470) at ../../kio/kio/job.cpp:496
#26 0x00007efdd6a0ef21 in KIO::TransferJob::slotFinished (this=0xcd0470) at ../../kio/kio/job.cpp:1110
#27 0x00007efdd4001010 in QMetaObject::activate (sender=0x13c5700, m=m@entry=0x7efdd6dd3ba0 <KIO::SlaveInterface::staticMetaObject>, local_signal_index=local_signal_index@entry=4, argv=argv@entry=0x0) at kernel/qobject.cpp:3567
#28 0x00007efdd6ab9713 in KIO::SlaveInterface::finished (this=<optimized out>) at ./slaveinterface.moc:184
#29 0x00007efdd6abc546 in KIO::SlaveInterface::dispatch (this=<optimized out>, _cmd=104, rawdata=...) at ../../kio/kio/slaveinterface.cpp:176
#30 0x00007efdd6ab939d in KIO::SlaveInterface::dispatch (this=0x13c5700) at ../../kio/kio/slaveinterface.cpp:92
#31 0x00007efdd6aabbc1 in KIO::Slave::gotInput (this=0x13c5700) at ../../kio/kio/slave.cpp:344
#32 0x00007efdd4001010 in QMetaObject::activate (sender=0x13f14c0, m=m@entry=0x7efdd6dce2c0 <KIO::Connection::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x0) at kernel/qobject.cpp:3567
#33 0x00007efdd69d3600 in KIO::Connection::readyRead (this=<optimized out>) at ./connection.moc:105
#34 0x00007efdd69d3ba4 in KIO::ConnectionPrivate::dequeue (this=0x13d5750) at ../../kio/kio/connection.cpp:82
#35 0x00007efdd4006db1 in QObject::event (this=0x13f14c0, e=<optimized out>) at kernel/qobject.cpp:1222
#36 0x00007efdd4c7ffdc in QApplicationPrivate::notify_helper (this=this@entry=0x737ba0, receiver=receiver@entry=0x13f14c0, e=e@entry=0x13c11b0) at kernel/qapplication.cpp:4570
#37 0x00007efdd4c86f16 in QApplication::notify (this=this@entry=0x7ffc2ff764a0, receiver=receiver@entry=0x13f14c0, e=e@entry=0x13c11b0) at kernel/qapplication.cpp:4356
#38 0x00007efdd70176aa in KApplication::notify (this=0x7ffc2ff764a0, receiver=0x13f14c0, event=0x13c11b0) at ../../kdeui/kernel/kapplication.cpp:311
#39 0x00007efdd3fec90d in QCoreApplication::notifyInternal (this=0x7ffc2ff764a0, receiver=receiver@entry=0x13f14c0, event=event@entry=0x13c11b0) at kernel/qcoreapplication.cpp:955
#40 0x00007efdd3ff03c6 in QCoreApplication::sendEvent (event=0x13c11b0, receiver=0x13f14c0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#41 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x709620) at kernel/qcoreapplication.cpp:1579
#42 0x00007efdd3ff06a3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1472
#43 0x00007efdd401d13e in QCoreApplication::sendPostedEvents () at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:236
#44 postEventSourceDispatch (s=0x742b30) at kernel/qeventdispatcher_glib.cpp:300
#45 0x00007efdd15711a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007efdd1571400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#47 0x00007efdd15714ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#48 0x00007efdd401d2ae in QEventDispatcherGlib::processEvents (this=0x70af30, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#49 0x00007efdd4d2d616 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#50 0x00007efdd3feb18f in QEventLoop::processEvents (this=this@entry=0x7ffc2ff76390, flags=...) at kernel/qeventloop.cpp:149
#51 0x00007efdd3feb4f5 in QEventLoop::exec (this=this@entry=0x7ffc2ff76390, flags=...) at kernel/qeventloop.cpp:204
#52 0x00007efdd3ff14b9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1227
#53 0x00007efdd4c7e22c in QApplication::exec () at kernel/qapplication.cpp:3828
#54 0x00007efdda058b1d in kdemain (argc=1, argv=0x7ffc2ff765f8) at /build/buildd/rekonq-2.4.2/src/main.cpp:242
#55 0x00007efdd9b92830 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=1, argv=0x7ffc2ff765f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc2ff765e8) at ../csu/libc-start.c:291
#56 0x00000000004006fe in _start ()

Possible duplicates by query: bug 355369.

Reported using DrKonqi