Application: rekonq (2.3.2)
KDE Platform Version: 4.11.2 (Compiled from sources)
Qt Version: 4.8.4
Operating System: Linux 3.11.0-13-generic i686
Distribution: Ubuntu 13.10

-- Information about the crash:
I opened the application and visit some sites and then it crashed.

The crash can be reproduced sometimes.

-- Backtrace:
Application: rekonq (rekonq), signal: Segmentation fault
Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0xb241c740 (LWP 2294))]

Thread 8 (Thread 0xafc81b40 (LWP 2295)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb2d4b84b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb75519bc in __pthread_cond_wait (cond=0xb7445d90 <WTF::pageheap_memory+20720>, mutex=0xb7445d78 <WTF::pageheap_memory+20696>) at forward.c:149
#3  0xb6bcba7c in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb6bcbacf in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb2d47d78 in start_thread (arg=0xafc81b40) at pthread_create.c:311
#6  0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 7 (Thread 0xaf352b40 (LWP 2296)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb2d4b84b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb75519bc in __pthread_cond_wait (cond=0xaf3d17dc, mutex=0xaf3d17c4) at forward.c:149
#3  0xb6bfaae3 in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb68d6744 in JSC::BlockAllocator::blockFreeingThreadMain() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb6be1866 in WTF::threadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#6  0xb6bfa459 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#7  0xb2d47d78 in start_thread (arg=0xaf352b40) at pthread_create.c:311
#8  0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 6 (Thread 0xadf94b40 (LWP 2297)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb2d4b84b in pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/i386/i686/../i486/pthread_cond_wait.S:187
#2  0xb75519bc in __pthread_cond_wait (cond=0xaf3d9930, mutex=0xaf3d9918) at forward.c:149
#3  0xb6bfaae3 in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb5f78274 in WebCore::IconDatabase::syncThreadMainLoop() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb5f7a0f4 in WebCore::IconDatabase::iconDatabaseSyncThread() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#6  0xb6be1866 in WTF::threadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#7  0xb6bfa459 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#8  0xb2d47d78 in start_thread (arg=0xadf94b40) at pthread_create.c:311
#9  0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 5 (Thread 0xad4ffb40 (LWP 2298)):
#0  0xb30c186e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb30c1ba8 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb307eb44 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb307eca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb384b8df in QEventDispatcherGlib::processEvents (this=0xacb00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0xb381a9f3 in QEventLoop::processEvents (this=this@entry=0xad4ff258, flags=...) at kernel/qeventloop.cpp:149
#6  0xb381ad19 in QEventLoop::exec (this=this@entry=0xad4ff258, flags=...) at kernel/qeventloop.cpp:204
#7  0xb3709e3d in QThread::exec (this=this@entry=0x9eeaed0) at thread/qthread.cpp:542
#8  0xb3709f8b in QThread::run (this=0x9eeaed0) at thread/qthread.cpp:609
#9  0xb370c72f in QThreadPrivate::start (arg=0x9eeaed0) at thread/qthread_unix.cpp:338
#10 0xb2d47d78 in start_thread (arg=0xad4ffb40) at pthread_create.c:311
#11 0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 4 (Thread 0xac7ccb40 (LWP 2300)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb7534a0b in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb308da4b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb307eb68 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb307eca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb384b8df in QEventDispatcherGlib::processEvents (this=0xabe00468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb381a9f3 in QEventLoop::processEvents (this=this@entry=0xac7cc228, flags=...) at kernel/qeventloop.cpp:149
#7  0xb381ad19 in QEventLoop::exec (this=this@entry=0xac7cc228, flags=...) at kernel/qeventloop.cpp:204
#8  0xb3709e3d in QThread::exec (this=this@entry=0x9e04430) at thread/qthread.cpp:542
#9  0xb37fae14 in QInotifyFileSystemWatcherEngine::run (this=0x9e04430) at io/qfilesystemwatcher_inotify.cpp:265
#10 0xb370c72f in QThreadPrivate::start (arg=0x9e04430) at thread/qthread_unix.cpp:338
#11 0xb2d47d78 in start_thread (arg=0xac7ccb40) at pthread_create.c:311
#12 0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 3 (Thread 0xa43f7b40 (LWP 2345)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb75328db in read () at ../sysdeps/unix/syscall-template.S:81
#2  0xb30c0d4e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb307e65b in g_main_context_check () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb307eafa in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb307f04b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xa7ec232a in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#7  0xb30a4c4a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0xb2d47d78 in start_thread (arg=0xa43f7b40) at pthread_create.c:311
#9  0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 2 (Thread 0xa39ffb40 (LWP 2346)):
#0  0xb776b424 in __kernel_vsyscall ()
#1  0xb7534a0b in poll () at ../sysdeps/unix/syscall-template.S:81
#2  0xb308da4b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb307eb68 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb307eca8 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb307ed2e in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb30a4c4a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0xb2d47d78 in start_thread (arg=0xa39ffb40) at pthread_create.c:311
#8  0xb754401e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 1 (Thread 0xb241c740 (LWP 2294)):
[KCrash Handler]
#7  0x00000000 in ?? ()
#8  0xb415b67c in QStyleSheetStyle::event (this=0x9f2d6b0, e=0xbfad5a20) at styles/qstylesheetstyle.cpp:5798
#9  0xb3df5744 in QApplicationPrivate::notify_helper (this=0x9db31d0, receiver=0x9f2d6b0, e=0xbfad5a20) at kernel/qapplication.cpp:4567
#10 0xb3dfc223 in QApplication::notify (this=0xbfad6570, receiver=receiver@entry=0x9f2d6b0, e=e@entry=0xbfad5a20) at kernel/qapplication.cpp:4353
#11 0xb50e7ff4 in KApplication::notify (this=0xbfad6570, receiver=0x9f2d6b0, event=0xbfad5a20) at ../../kdeui/kernel/kapplication.cpp:311
#12 0xb381beda in QCoreApplication::notifyInternal (this=0xbfad6570, receiver=0x9f2d6b0, event=event@entry=0xbfad5a20) at kernel/qcoreapplication.cpp:946
#13 0xb3dfa2d0 in sendEvent (event=0xbfad5a20, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#14 QApplicationPrivate::setFocusWidget (focus=focus@entry=0x0, reason=reason@entry=Qt::OtherFocusReason) at kernel/qapplication.cpp:2270
#15 0xb3e3b48c in QWidget::clearFocus (this=0x9eed7d8) at kernel/qwidget.cpp:6546
#16 0xb3e4b0f9 in QWidget::~QWidget (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1612
#17 0xb426068f in QLineEdit::~QLineEdit (this=0x9eed7d8, __in_chrg=<optimized out>) at widgets/qlineedit.cpp:357
#18 0xb51a9026 in KLineEdit::~KLineEdit (this=0x9eed7d8, __in_chrg=<optimized out>) at ../../kdeui/widgets/klineedit.cpp:245
#19 0xb76cfc9f in UrlBar::~UrlBar (this=0x9eed7d8, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/urlbar/urlbar.cpp:168
#20 0xb76cfcfc in UrlBar::~UrlBar (this=0x9eed7d8, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/urlbar/urlbar.cpp:174
#21 0xb3e5364f in QWidgetAction::~QWidgetAction (this=0x9f43110, __in_chrg=<optimized out>) at kernel/qwidgetaction.cpp:128
#22 0xb4ff9884 in KAction::~KAction (this=0x9f43110, __in_chrg=<optimized out>) at ../../kdeui/actions/kaction.cpp:160
#23 0xb4ff98dc in KAction::~KAction (this=0x9f43110, __in_chrg=<optimized out>) at ../../kdeui/actions/kaction.cpp:171
#24 0xb3833a6a in QObjectPrivate::deleteChildren (this=this@entry=0x9eef450) at kernel/qobject.cpp:1907
#25 0xb3e4b1ac in QWidget::~QWidget (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#26 0xb770fccc in WebWindow::~WebWindow (this=0x9eef398, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/webwindow/webwindow.cpp:159
#27 0xb770fd2c in WebWindow::~WebWindow (this=0x9eef398, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/webwindow/webwindow.cpp:168
#28 0xb3833a6a in QObjectPrivate::deleteChildren (this=this@entry=0x9ed91b8) at kernel/qobject.cpp:1907
#29 0xb3e4b1ac in QWidget::~QWidget (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#30 0xb42534df in QFrame::~QFrame (this=0x9dea410, __in_chrg=<optimized out>) at widgets/qframe.cpp:240
#31 0xb42b67ef in QStackedWidget::~QStackedWidget (this=0x9dea410, __in_chrg=<optimized out>) at widgets/qstackedwidget.cpp:194
#32 0xb42b682c in QStackedWidget::~QStackedWidget (this=0x9dea410, __in_chrg=<optimized out>) at widgets/qstackedwidget.cpp:196
#33 0xb3833a6a in QObjectPrivate::deleteChildren (this=this@entry=0x9ed8fd0) at kernel/qobject.cpp:1907
#34 0xb3e4b1ac in QWidget::~QWidget (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#35 0xb42c31cf in QTabWidget::~QTabWidget (this=0x9e92850, __in_chrg=<optimized out>) at widgets/qtabwidget.cpp:365
#36 0xb51da50c in KTabWidget::~KTabWidget (this=0x9e92850, __in_chrg=<optimized out>) at ../../kdeui/widgets/ktabwidget.cpp:254
#37 0xb76cde67 in ~TabWidget (this=0x9e92850, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/tabwidget.h:54
#38 TabWidget::~TabWidget (this=0x9e92850, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/tabwidget.h:54
#39 0xb3833a6a in QObjectPrivate::deleteChildren (this=this@entry=0xa087bf8) at kernel/qobject.cpp:1907
#40 0xb3e4b1ac in QWidget::~QWidget (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#41 0xb42534df in QFrame::~QFrame (this=0xa032880, __in_chrg=<optimized out>) at widgets/qframe.cpp:240
#42 0xb42b1b54 in QSplitter::~QSplitter (this=0xa032880, __in_chrg=<optimized out>) at widgets/qsplitter.cpp:1050
#43 0xb42b1bcc in QSplitter::~QSplitter (this=0xa032880, __in_chrg=<optimized out>) at widgets/qsplitter.cpp:1056
#44 0xb3833a6a in QObjectPrivate::deleteChildren (this=this@entry=0x9eda450) at kernel/qobject.cpp:1907
#45 0xb3e4b1ac in QWidget::~QWidget (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qwidget.cpp:1681
#46 0xb76c1f92 in RWindow::~RWindow (this=0x9ed8b40, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/rwindow.cpp:148
#47 0xb76c3dbe in RekonqWindow::~RekonqWindow (this=0x9ed8b40, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/rekonqwindow.cpp:72
#48 0xb76c3dfc in RekonqWindow::~RekonqWindow (this=0x9ed8b40, __in_chrg=<optimized out>) at /build/buildd/rekonq-2.3.2/src/tabwindow/rekonqwindow.cpp:74
#49 0xb382f423 in qDeleteInEventHandler (o=o@entry=0x9ed8b40) at kernel/qobject.cpp:4269
#50 0xb38355b0 in QObject::event (this=0x9ed8b40, e=0xdedf5d8) at kernel/qobject.cpp:1175
#51 0xb3e4f202 in QWidget::event (this=0x9ed8b40, event=0xdedf5d8) at kernel/qwidget.cpp:8845
#52 0xb3df5744 in QApplicationPrivate::notify_helper (this=0x9db31d0, receiver=0x9ed8b40, e=0xdedf5d8) at kernel/qapplication.cpp:4567
#53 0xb3dfc223 in QApplication::notify (this=0xbfad6570, receiver=receiver@entry=0x9ed8b40, e=e@entry=0xdedf5d8) at kernel/qapplication.cpp:4353
#54 0xb50e7ff4 in KApplication::notify (this=0xbfad6570, receiver=0x9ed8b40, event=0xdedf5d8) at ../../kdeui/kernel/kapplication.cpp:311
#55 0xb381beda in QCoreApplication::notifyInternal (this=0xbfad6570, receiver=receiver@entry=0x9ed8b40, event=event@entry=0xdedf5d8) at kernel/qcoreapplication.cpp:946
#56 0xb381f6ad in sendEvent (event=0xdedf5d8, receiver=0x9ed8b40) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#57 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52, data=0x9d7d078) at kernel/qcoreapplication.cpp:1570
#58 0xb381fbbc in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=52) at kernel/qcoreapplication.cpp:1463
#59 0xb38208d1 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1225
#60 0xb3df3974 in QApplication::exec () at kernel/qapplication.cpp:3828
#61 0xb772bcd8 in kdemain (argc=1, argv=0xbfad6664) at /build/buildd/rekonq-2.3.2/src/main.cpp:242
#62 0x0804854b in main (argc=1, argv=0xbfad6664) at /build/buildd/rekonq-2.3.2/obj-i686-linux-gnu/src/rekonq_dummy.cpp:3

The reporter indicates this bug may be a duplicate of or related to bug 292915.

Possible duplicates by query: bug 325404, bug 324945, bug 322179, bug 322122, bug 321408.

Reported using DrKonqi