Application: rekonq (0.9.1)
KDE Platform Version: 4.8.5 (4.8.5)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-37-generic x86_64
Distribution: Ubuntu 12.04.2 LTS

-- Information about the crash:
I was checking my gmail account, then I closed the browser and when rekonq windows disappeared it crashed

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 0x7fa506808780 (LWP 3043))]

Thread 6 (Thread 0x7fa4f0a3c700 (LWP 3044)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fa505090dec in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7fa505a59de0) at wtf/FastMalloc.cpp:2495
#2  0x00007fa505090f19 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1618
#3  0x00007fa500241e9a in start_thread (arg=0x7fa4f0a3c700) at pthread_create.c:308
#4  0x00007fa506011ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fa4eff2f700 (LWP 3045)):
#0  0x00007fa506006313 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa4fe8e4036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4fe8e4164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa500bfd426 in QEventDispatcherGlib::processEvents (this=0x7fa4e80008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fa500bccc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fa500bcced7 in QEventLoop::exec (this=0x7fa4eff2ee00, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fa500acbfa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fa500acefcb in QThreadPrivate::start (arg=0x214bcf0) at thread/qthread_unix.cpp:298
#8  0x00007fa500241e9a in start_thread (arg=0x7fa4eff2f700) at pthread_create.c:308
#9  0x00007fa506011ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fa4ef066700 (LWP 3046)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fa505c02222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007fa505c02259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007fa500241e9a in start_thread (arg=0x7fa4ef066700) at pthread_create.c:308
#4  0x00007fa506011ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fa4edb7e700 (LWP 3047)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fa500acf4db in wait (time=18446744073709551615, this=0x1e6a770) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x1e4e3d0, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fa502b200eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x1e6a620, th=0x2176620) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fa502b229db in ThreadWeaver::WorkingHardState::applyForWork (this=0x1e4d780, th=0x2176620) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fa502b2184f in ThreadWeaver::ThreadRunHelper::run (this=0x7fa4edb7de20, parent=0x1e6a620, th=0x2176620) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fa502b218db in ThreadWeaver::Thread::run (this=0x2176620) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fa500acefcb in QThreadPrivate::start (arg=0x2176620) at thread/qthread_unix.cpp:298
#8  0x00007fa500241e9a in start_thread (arg=0x7fa4edb7e700) at pthread_create.c:308
#9  0x00007fa506011ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fa4e71a4700 (LWP 3049)):
#0  0x00007fa506006313 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fa4fe8e4036 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fa4fe8e4164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fa500bfd426 in QEventDispatcherGlib::processEvents (this=0x7fa49c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fa500bccc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fa500bcced7 in QEventLoop::exec (this=0x7fa4e71a3dd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fa500acbfa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fa500bac9ff in QInotifyFileSystemWatcherEngine::run (this=0x23df3f0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fa500acefcb in QThreadPrivate::start (arg=0x23df3f0) at thread/qthread_unix.cpp:298
#9  0x00007fa500241e9a in start_thread (arg=0x7fa4e71a4700) at pthread_create.c:308
#10 0x00007fa506011ccd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fa506808780 (LWP 3043)):
[KCrash Handler]
#6  0x00007fa50113163b in QWidget::testAttribute_helper (this=0x2e1, attribute=Qt::WA_NativeWindow) at kernel/qwidget.cpp:11034
#7  0x00007fa50113a20c in testAttribute (attribute=Qt::WA_NativeWindow, this=0x2e1) at ../../include/QtGui/../../src/gui/kernel/qwidget.h:1042
#8  QWidgetPrivate::createWinId (this=<optimized out>, winid=0) at kernel/qwidget.cpp:2537
#9  0x00007fa50114238f in QWidget::winId (this=0x1eab940) at kernel/qwidget.cpp:2523
#10 0x00007fa50307758f in KIO::SimpleJobPrivate::start (this=0x2bf5060, slave=0x25291d0) at ../../kio/kio/job.cpp:424
#11 0x00007fa503077c8b in KIO::TransferJobPrivate::start (this=0x2bf5060, slave=0x25291d0) at ../../kio/kio/job.cpp:1250
#12 0x00007fa503105f0b in startJob (slave=0x25291d0, job=0x281fd20) at ../../kio/kio/scheduler.cpp:60
#13 KIO::ProtoQueue::startAJob (this=0x2415310) at ../../kio/kio/scheduler.cpp:634
#14 0x00007fa500be2281 in QMetaObject::activate (sender=0x2415368, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#15 0x00007fa500be7179 in QObject::event (this=0x2415368, e=<optimized out>) at kernel/qobject.cpp:1157
#16 0x00007fa5010f0894 in notify_helper (e=0x7fff0eba0570, receiver=0x2415368, this=0x1cfb380) at kernel/qapplication.cpp:4559
#17 QApplicationPrivate::notify_helper (this=0x1cfb380, receiver=0x2415368, e=0x7fff0eba0570) at kernel/qapplication.cpp:4531
#18 0x00007fa5010f5713 in QApplication::notify (this=0x7fff0eba0840, receiver=0x2415368, e=0x7fff0eba0570) at kernel/qapplication.cpp:4420
#19 0x00007fa50366f3f6 in KApplication::notify (this=0x7fff0eba0840, receiver=0x2415368, event=0x7fff0eba0570) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007fa500bcde9c in QCoreApplication::notifyInternal (this=0x7fff0eba0840, receiver=0x2415368, event=0x7fff0eba0570) at kernel/qcoreapplication.cpp:876
#21 0x00007fa500bff1f2 in sendEvent (event=0x7fff0eba0570, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QTimerInfoList::activateTimers (this=0x1cfd060) at kernel/qeventdispatcher_unix.cpp:611
#23 0x00007fa500bfcc0d in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#24 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#25 0x00007fa4fe8e3d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fa4fe8e40a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fa4fe8e4164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007fa500bfd3bf in QEventDispatcherGlib::processEvents (this=0x1cc3ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007fa501198d5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007fa500bccc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007fa500bcced7 in QEventLoop::exec (this=0x7fff0eba07d0, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007fa500bd1f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#33 0x00007fa5063ebc9e in kdemain (argc=1, argv=<optimized out>) at /build/buildd/rekonq-0.9.1/src/main.cpp:180
#34 0x00007fa505f3f76d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=1, ubp_av=0x7fff0eba0ff8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff0eba0fe8) at libc-start.c:226
#35 0x0000000000400661 in _start ()

Possible duplicates by query: bug 309627, bug 309098, bug 308909, bug 308826, bug 306744.

Reported using DrKonqi