Bug 324945

Application: rekonq (2.3.2)
KDE Platform Version: 4.11.1
Qt Version: 4.8.4
Operating System: Linux 3.10.0-5-generic x86_64
Distribution: Ubuntu Saucy Salamander (development branch)

-- Information about the crash:
- What I was doing when the application crashed:
I opened Rekonq, which is all it takes for a message about the application closing to appear. I doesn't seem to actually crash though. I can normally just close the message and everything works fine. It's more of an annoyance than a problem. If this is a duplicate, then I apologize.

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 0x7fb4bc87d7c0 (LWP 4373))]

Thread 9 (Thread 0x7fb4a4d9d700 (LWP 4374)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb4bb48bf2d in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb4bb48bf69 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb4b2b42f6e in start_thread (arg=0x7fb4a4d9d700) at pthread_create.c:311
#4  0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 8 (Thread 0x7fb4642a1700 (LWP 4375)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb4bb1cc9fd in JSC::BlockAllocator::blockFreeingThreadMain() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb4bb4bb786 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb4b2b42f6e in start_thread (arg=0x7fb4642a1700) at pthread_create.c:311
#4  0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 7 (Thread 0x7fb462d4b700 (LWP 4377)):
#0  0x00007fb4b382b349 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb4b382b5e9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb4b37ead69 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb4b37eb5d3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb4b37eb7bc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb4b6082a76 in QEventDispatcherGlib::processEvents (this=0x7fb4540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x00007fb4b60545ef in QEventLoop::processEvents (this=this@entry=0x7fb462d4adb0, flags=...) at kernel/qeventloop.cpp:149
#7  0x00007fb4b60548e5 in QEventLoop::exec (this=this@entry=0x7fb462d4adb0, flags=...) at kernel/qeventloop.cpp:204
#8  0x00007fb4b5f5388f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:542
#9  0x00007fb4b5f55f2f in QThreadPrivate::start (arg=0x19f30c0) at thread/qthread_unix.cpp:338
#10 0x00007fb4b2b42f6e in start_thread (arg=0x7fb462d4b700) at pthread_create.c:311
#11 0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 6 (Thread 0x7fb46141d700 (LWP 4379)):
#0  0x00007fb4b37e8b30 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb4b37eacfb in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb4b37eb5d3 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb4b37eb7bc in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb4b6082a76 in QEventDispatcherGlib::processEvents (this=0x7fb4580008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0x00007fb4b60545ef in QEventLoop::processEvents (this=this@entry=0x7fb46141cd70, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fb4b60548e5 in QEventLoop::exec (this=this@entry=0x7fb46141cd70, flags=...) at kernel/qeventloop.cpp:204
#7  0x00007fb4b5f5388f in QThread::exec (this=this@entry=0x1c4c220) at thread/qthread.cpp:542
#8  0x00007fb4b6035d13 in QInotifyFileSystemWatcherEngine::run (this=0x1c4c220) at io/qfilesystemwatcher_inotify.cpp:265
#9  0x00007fb4b5f55f2f in QThreadPrivate::start (arg=0x1c4c220) at thread/qthread_unix.cpp:338
#10 0x00007fb4b2b42f6e in start_thread (arg=0x7fb46141d700) at pthread_create.c:311
#11 0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 5 (Thread 0x7fb4533dd700 (LWP 4648)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fb4b5f563e4 in wait (time=30000, this=0x8b03470) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=mutex@entry=0x8b19d28, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb4b5f498a5 in QThreadPoolThread::run (this=0x8bed390) at concurrent/qthreadpool.cpp:141
#4  0x00007fb4b5f55f2f in QThreadPrivate::start (arg=0x8bed390) at thread/qthread_unix.cpp:338
#5  0x00007fb4b2b42f6e in start_thread (arg=0x7fb4533dd700) at pthread_create.c:311
#6  0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 4 (Thread 0x7fb453fff700 (LWP 4649)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fb4b5f563e4 in wait (time=30000, this=0x8b03470) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=mutex@entry=0x8b19d28, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb4b5f498a5 in QThreadPoolThread::run (this=0x8b09190) at concurrent/qthreadpool.cpp:141
#4  0x00007fb4b5f55f2f in QThreadPrivate::start (arg=0x8b09190) at thread/qthread_unix.cpp:338
#5  0x00007fb4b2b42f6e in start_thread (arg=0x7fb453fff700) at pthread_create.c:311
#6  0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 3 (Thread 0x7fb452bdc700 (LWP 4650)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007fb4b5f563e4 in wait (time=30000, this=0x8b03470) at thread/qwaitcondition_unix.cpp:84
#2  QWaitCondition::wait (this=<optimized out>, mutex=mutex@entry=0x8b19d28, time=30000) at thread/qwaitcondition_unix.cpp:158
#3  0x00007fb4b5f498a5 in QThreadPoolThread::run (this=0x8bed430) at concurrent/qthreadpool.cpp:141
#4  0x00007fb4b5f55f2f in QThreadPrivate::start (arg=0x8bed430) at thread/qthread_unix.cpp:338
#5  0x00007fb4b2b42f6e in start_thread (arg=0x7fb452bdc700) at pthread_create.c:311
#6  0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 2 (Thread 0x7fb43f09f700 (LWP 4652)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007fb4ba9729fb in WebCore::IconDatabase::syncThreadMainLoop() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fb4ba972be4 in WebCore::IconDatabase::iconDatabaseSyncThread() () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fb4bb4bb786 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#4  0x00007fb4b2b42f6e in start_thread (arg=0x7fb43f09f700) at pthread_create.c:311
#5  0x00007fb4bc078e2d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

Thread 1 (Thread 0x7fb4bc87d7c0 (LWP 4373)):
[KCrash Handler]
#6  0x0000000000000000 in ?? ()
#7  0x00007fb4b6fd9cbe in QStyleSheetStyle::event (this=0x1a80f00, e=0x7ffff9ff9b70) at styles/qstylesheetstyle.cpp:5798
#8  0x00007fb4b6cc1dfc in QApplicationPrivate::notify_helper (this=this@entry=0x18009b0, receiver=receiver@entry=0x1a80f00, e=e@entry=0x7ffff9ff9b70) at kernel/qapplication.cpp:4567
#9  0x00007fb4b6cc8470 in QApplication::notify (this=this@entry=0x7ffff9ffa650, receiver=receiver@entry=0x1a80f00, e=e@entry=0x7ffff9ff9b70) at kernel/qapplication.cpp:4353
#10 0x00007fb4b959d9aa in KApplication::notify (this=0x7ffff9ffa650, receiver=0x1a80f00, event=0x7ffff9ff9b70) at ../../kdeui/kernel/kapplication.cpp:311
#11 0x00007fb4b60558bd in QCoreApplication::notifyInternal (this=0x7ffff9ffa650, receiver=0x1a80f00, event=event@entry=0x7ffff9ff9b70) at kernel/qcoreapplication.cpp:946
#12 0x00007fb4b6cc6539 in sendEvent (event=0x7ffff9ff9b70, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#13 QApplicationPrivate::setFocusWidget (focus=focus@entry=0x0, reason=reason@entry=Qt::OtherFocusReason) at kernel/qapplication.cpp:2270
#14 0x00007fb4b6cff5a4 in QWidget::clearFocus (this=0x1a01ad0) at kernel/qwidget.cpp:6546
#15 0x00007fb4b6d0da6f in QWidget::~QWidget (this=0x1a01ad0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1612
#16 0x00007fb4bc410129 in UrlBar::~UrlBar (this=0x1a01ad0, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/urlbar/urlbar.cpp:174
#17 0x00007fb4b6d14eea in QWidgetAction::~QWidgetAction (this=0x1a3ae30, __in_chrg=<optimized out>) at kernel/qwidgetaction.cpp:128
#18 0x00007fb4b94c8009 in KAction::~KAction (this=0x1a3ae30, __in_chrg=<optimized out>) at ../../kdeui/actions/kaction.cpp:171
#19 0x00007fb4b606c308 in QObjectPrivate::deleteChildren (this=this@entry=0x19eedc0) at kernel/qobject.cpp:1907
#20 0x00007fb4b6d0db37 in QWidget::~QWidget (this=0x19f2fa0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#21 0x00007fb4bc449179 in WebWindow::~WebWindow (this=0x19f2fa0, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/webwindow/webwindow.cpp:168
#22 0x00007fb4b606c308 in QObjectPrivate::deleteChildren (this=this@entry=0x196bd90) at kernel/qobject.cpp:1907
#23 0x00007fb4b6d0db37 in QWidget::~QWidget (this=0x180ec30, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#24 0x00007fb4b7109149 in QStackedWidget::~QStackedWidget (this=0x180ec30, __in_chrg=<optimized out>) at widgets/qstackedwidget.cpp:196
#25 0x00007fb4b606c308 in QObjectPrivate::deleteChildren (this=this@entry=0x19698d0) at kernel/qobject.cpp:1907
#26 0x00007fb4b6d0db37 in QWidget::~QWidget (this=0x19e4f80, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#27 0x00007fb4bc40e72b in ~TabWidget (this=0x19e4f80, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/tabwidget.h:54
#28 TabWidget::~TabWidget (this=0x19e4f80, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/tabwidget.h:54
#29 0x00007fb4b606c308 in QObjectPrivate::deleteChildren (this=this@entry=0x1c01f90) at kernel/qobject.cpp:1907
#30 0x00007fb4b6d0db37 in QWidget::~QWidget (this=0x1bfe0f0, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#31 0x00007fb4b7104d09 in QSplitter::~QSplitter (this=0x1bfe0f0, __in_chrg=<optimized out>) at widgets/qsplitter.cpp:1056
#32 0x00007fb4b606c308 in QObjectPrivate::deleteChildren (this=this@entry=0x196bb90) at kernel/qobject.cpp:1907
#33 0x00007fb4b6d0db37 in QWidget::~QWidget (this=0x1976500, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#34 0x00007fb4bc4042fe in RWindow::~RWindow (this=0x1976500, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/rwindow.cpp:148
#35 0x00007fb4bc405e79 in RekonqWindow::~RekonqWindow (this=0x1976500, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/rekonqwindow.cpp:74
#36 0x00007fb4b606de08 in QObject::event (this=this@entry=0x1976500, e=e@entry=0x8c3a9a0) at kernel/qobject.cpp:1175
#37 0x00007fb4b6d1136b in QWidget::event (this=0x1976500, event=0x8c3a9a0) at kernel/qwidget.cpp:8845
#38 0x00007fb4b6cc1dfc in QApplicationPrivate::notify_helper (this=this@entry=0x18009b0, receiver=receiver@entry=0x1976500, e=e@entry=0x8c3a9a0) at kernel/qapplication.cpp:4567
#39 0x00007fb4b6cc8470 in QApplication::notify (this=this@entry=0x7ffff9ffa650, receiver=receiver@entry=0x1976500, e=e@entry=0x8c3a9a0) at kernel/qapplication.cpp:4353
#40 0x00007fb4b959d9aa in KApplication::notify (this=0x7ffff9ffa650, receiver=0x1976500, event=0x8c3a9a0) at ../../kdeui/kernel/kapplication.cpp:311
#41 0x00007fb4b60558bd in QCoreApplication::notifyInternal (this=0x7ffff9ffa650, receiver=receiver@entry=0x1976500, event=event@entry=0x8c3a9a0) at kernel/qcoreapplication.cpp:946
#42 0x00007fb4b6058e1f in sendEvent (event=0x8c3a9a0, receiver=0x1976500) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#43 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52, data=0x17b5240) at kernel/qcoreapplication.cpp:1570
#44 0x00007fb4b60592c3 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52) at kernel/qcoreapplication.cpp:1463
#45 0x00007fb4b6059e92 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#46 0x00007fb4b6cc034c in QApplication::exec () at kernel/qapplication.cpp:3828
#47 0x00007fb4bc461dd5 in kdemain (argc=2, argv=0x7ffff9ffa7a8) at /build/buildd/rekonq-2.3.2/src/main.cpp:242
#48 0x00007fb4bbfa0de5 in __libc_start_main (main=0x4006d0 <main(int, char**)>, argc=2, ubp_av=0x7ffff9ffa7a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff9ffa798) at libc-start.c:260
#49 0x0000000000400701 in _start ()

Possible duplicates by query: bug 322179, bug 322122, bug 321408, bug 319585, bug 318646.

Reported using DrKonqi