Application: rekonq (0.9.1)
KDE Platform Version: 4.8.4 (4.8.4)
Qt Version: 4.8.1
Operating System: Linux 3.2.0-30-generic x86_64
Distribution: Ubuntu 12.04.1 LTS

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

I just wanted to quit from the program. This happens every time when I klick quit.

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 0x7f42aa432780 (LWP 3709))]

Thread 7 (Thread 0x7f4292304700 (LWP 3710)):
#0  0x00007f42a3e69f69 in __pthread_mutex_lock (mutex=0x150a1f0) at pthread_mutex_lock.c:92
#1  0x00007f42a25455a1 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f42a2509ff1 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f42a250a49a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f429230998b in ?? () from /usr/lib/x86_64-linux-gnu/gio/modules/libdconfsettings.so
#5  0x00007f42a252b9e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f42a3e67e9a in start_thread (arg=0x7f4292304700) at pthread_create.c:308
#7  0x00007f42a9c364bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f4291b03700 (LWP 3711)):
#0  0x00007f42a3e6b043 in __pthread_mutex_unlock_usercnt (mutex=<optimized out>, decr=<optimized out>) at pthread_mutex_unlock.c:38
#1  __pthread_mutex_unlock (mutex=0x7f428c00eec0) at pthread_mutex_unlock.c:290
#2  0x00007f42a25455d1 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f42a2509b3d in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f42a2509fd6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f42a250a49a in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f4299668406 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007f42a252b9e5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007f42a3e67e9a in start_thread (arg=0x7f4291b03700) at pthread_create.c:308
#9  0x00007f42a9c364bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f4289209700 (LWP 3713)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f42a8cb6dec in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7f42a967fde0) at wtf/FastMalloc.cpp:2495
#2  0x00007f42a8cb6f19 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<optimized out>) at wtf/FastMalloc.cpp:1618
#3  0x00007f42a3e67e9a in start_thread (arg=0x7f4289209700) at pthread_create.c:308
#4  0x00007f42a9c364bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7f427ffff700 (LWP 3714)):
#0  0x00007f42a25455c9 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f42a250a16e in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f42a4821426 in QEventDispatcherGlib::processEvents (this=0x7f42780008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#3  0x00007f42a47f0c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#4  0x00007f42a47f0ed7 in QEventLoop::exec (this=0x7f427fffee00, flags=...) at kernel/qeventloop.cpp:204
#5  0x00007f42a46effa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#6  0x00007f42a46f2fcb in QThreadPrivate::start (arg=0x18ffbc0) at thread/qthread_unix.cpp:298
#7  0x00007f42a3e67e9a in start_thread (arg=0x7f427ffff700) at pthread_create.c:308
#8  0x00007f42a9c364bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f427da0f700 (LWP 3715)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f42a9828222 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#2  0x00007f42a9828259 in ?? () from /usr/lib/x86_64-linux-gnu/libQtScript.so.4
#3  0x00007f42a3e67e9a in start_thread (arg=0x7f427da0f700) at pthread_create.c:308
#4  0x00007f42a9c364bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4273d9a700 (LWP 3716)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f42a46f34db in wait (time=18446744073709551615, this=0x16cab00) at thread/qwaitcondition_unix.cpp:86
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x16cc120, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:158
#3  0x00007f42a67450eb in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x16cbec0, th=0x1932c80) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007f42a67479db in ThreadWeaver::WorkingHardState::applyForWork (this=0x16cc1b0, th=0x1932c80) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007f42a674684f in ThreadWeaver::ThreadRunHelper::run (this=0x7f4273d99e20, parent=0x16cbec0, th=0x1932c80) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007f42a67468db in ThreadWeaver::Thread::run (this=0x1932c80) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007f42a46f2fcb in QThreadPrivate::start (arg=0x1932c80) at thread/qthread_unix.cpp:298
#8  0x00007f42a3e67e9a in start_thread (arg=0x7f4273d9a700) at pthread_create.c:308
#9  0x00007f42a9c364bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f42aa432780 (LWP 3709)):
[KCrash Handler]
#6  QWidget::focusProxy (this=0x91) at kernel/qwidget.cpp:6330
#7  0x00007f42a4d5e5c3 in effectiveFocusWidget (this=0x1e0e080) at ../../include/QtGui/private/../../../src/gui/kernel/qwidget_p.h:584
#8  QWidget::setAttribute (this=0x16ec290, attribute=<optimized out>, on=true) at kernel/qwidget.cpp:10826
#9  0x00007f42a4d66384 in QWidget::winId (this=0x16ec290) at kernel/qwidget.cpp:2521
#10 0x00007f42a6c9c49f in KIO::SimpleJobPrivate::start (this=0x2690cb0, slave=0x254e2c0) at ../../kio/kio/job.cpp:424
#11 0x00007f42a6c9cb9b in KIO::TransferJobPrivate::start (this=0x2690cb0, slave=0x254e2c0) at ../../kio/kio/job.cpp:1250
#12 0x00007f42a6d2addb in startJob (slave=0x254e2c0, job=0x25a3ec0) at ../../kio/kio/scheduler.cpp:60
#13 KIO::ProtoQueue::startAJob (this=0x1d26a80) at ../../kio/kio/scheduler.cpp:634
#14 0x00007f42a4806281 in QMetaObject::activate (sender=0x1d26ad8, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#15 0x00007f42a480b179 in QObject::event (this=0x1d26ad8, e=<optimized out>) at kernel/qobject.cpp:1157
#16 0x00007f42a4d14894 in notify_helper (e=0x7fffaf951e10, receiver=0x1d26ad8, this=0x14874a0) at kernel/qapplication.cpp:4559
#17 QApplicationPrivate::notify_helper (this=0x14874a0, receiver=0x1d26ad8, e=0x7fffaf951e10) at kernel/qapplication.cpp:4531
#18 0x00007f42a4d19713 in QApplication::notify (this=0x7fffaf9520e0, receiver=0x1d26ad8, e=0x7fffaf951e10) at kernel/qapplication.cpp:4420
#19 0x00007f42a72949e6 in KApplication::notify (this=0x7fffaf9520e0, receiver=0x1d26ad8, event=0x7fffaf951e10) at ../../kdeui/kernel/kapplication.cpp:311
#20 0x00007f42a47f1e9c in QCoreApplication::notifyInternal (this=0x7fffaf9520e0, receiver=0x1d26ad8, event=0x7fffaf951e10) at kernel/qcoreapplication.cpp:876
#21 0x00007f42a48231f2 in sendEvent (event=0x7fffaf951e10, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#22 QTimerInfoList::activateTimers (this=0x14864e0) at kernel/qeventdispatcher_unix.cpp:611
#23 0x00007f42a4820c0d in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#24 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#25 0x00007f42a2509d53 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f42a250a0a0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f42a250a164 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f42a48213bf in QEventDispatcherGlib::processEvents (this=0x1453ad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#29 0x00007f42a4dbcd5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#30 0x00007f42a47f0c82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#31 0x00007f42a47f0ed7 in QEventLoop::exec (this=0x7fffaf952070, flags=...) at kernel/qeventloop.cpp:204
#32 0x00007f42a47f5f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#33 0x00007f42aa00fc9e in kdemain (argc=1, argv=<optimized out>) at /build/buildd/rekonq-0.9.1/src/main.cpp:180
#34 0x00007f42a9b6576d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=1, ubp_av=0x7fffaf952898, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffaf952888) at libc-start.c:226
#35 0x0000000000400661 in _start ()

Possible duplicates by query: bug 305309, bug 305165, bug 304622, bug 304575, bug 304364.

Reported using DrKonqi