Bug 324562

Application: rekonq (2.2.1)
KDE Platform Version: 4.10.5
Qt Version: 4.8.4
Operating System: Linux 3.8.0-29-generic i686
Distribution: Ubuntu 13.04

-- Information about the crash:
- What I was doing when the application crashed: Rekonq crashed after restoring a crushed session in dropbox. After that four more restored sessions did the same.

The crash can be reproduced every time.

-- 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 0xb236e980 (LWP 4358))]

Thread 6 (Thread 0xafcb4b40 (LWP 4359)):
#0  0xb7765424 in __kernel_vsyscall ()
#1  0xb2d0a84b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb7554d7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb6b87ae5 in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb6b87b1f in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb2d06d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#6  0xb75473de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 5 (Thread 0xaf384b40 (LWP 4360)):
#0  0xb7765424 in __kernel_vsyscall ()
#1  0xb2d0a84b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0
#2  0xb7554d7c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6
#3  0xb6bb8f63 in WTF::ThreadCondition::wait(WTF::Mutex&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#4  0xb6897b1b in JSC::BlockAllocator::blockFreeingThreadMain() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#5  0xb6b9d982 in WTF::threadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#6  0xb6bb8b12 in WTF::wtfThreadEntryPoint(void*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#7  0xb2d06d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0xb75473de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 4 (Thread 0xaded0b40 (LWP 4361)):
#0  0xb2d09c40 in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7554fc4 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2fe7d70 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2fa4570 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2fa4831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb37e4c3f in QEventDispatcherGlib::processEvents (this=0xad500468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0xb37b13ec in QEventLoop::processEvents (this=this@entry=0xaded0258, flags=...) at kernel/qeventloop.cpp:149
#7  0xb37b16e1 in QEventLoop::exec (this=this@entry=0xaded0258, flags=...) at kernel/qeventloop.cpp:204
#8  0xb369cfec in QThread::exec (this=this@entry=0x8935610) at thread/qthread.cpp:542
#9  0xb369d14b in QThread::run (this=0x8935610) at thread/qthread.cpp:609
#10 0xb369fb18 in QThreadPrivate::start (arg=0x8935610) at thread/qthread_unix.cpp:338
#11 0xb2d06d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0xb75473de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 3 (Thread 0xad1f9b40 (LWP 4363)):
#0  0xb2d08e2f in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0xb7554f84 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0xb2fe7d30 in g_mutex_lock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2fa3d2b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xb2fa45cf in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0xb2fa4831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb37e4c3f in QEventDispatcherGlib::processEvents (this=0xac800468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#7  0xb37b13ec in QEventLoop::processEvents (this=this@entry=0xad1f9228, flags=...) at kernel/qeventloop.cpp:149
#8  0xb37b16e1 in QEventLoop::exec (this=this@entry=0xad1f9228, flags=...) at kernel/qeventloop.cpp:204
#9  0xb369cfec in QThread::exec (this=this@entry=0x8b2d6a8) at thread/qthread.cpp:542
#10 0xb3790f2d in QInotifyFileSystemWatcherEngine::run (this=0x8b2d6a8) at io/qfilesystemwatcher_inotify.cpp:256
#11 0xb369fb18 in QThreadPrivate::start (arg=0x8b2d6a8) at thread/qthread_unix.cpp:338
#12 0xb2d06d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#13 0xb75473de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xa649eb40 (LWP 4415)):
#0  0xb2fe7a4a in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0xb2fe7d68 in g_mutex_unlock () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0xb2fa4570 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0xb2fa4c2b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0xab2ccbca in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#5  0xb2fc9fc3 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0xb2d06d78 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#7  0xb75473de in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb236e980 (LWP 4358)):
[KCrash Handler]
#7  0xac97412b in ?? ()
#8  0xb6982261 in JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#9  0xb6a83f5e in JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#10 0xb551a563 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#11 0xb57560b2 in WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1u>&) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#12 0xb5756360 in WebCore::EventTarget::fireEventListeners(WebCore::Event*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#13 0xb5b7004a in WebCore::DOMWindow::dispatchEvent(WTF::PassRefPtr<WebCore::Event>, WTF::PassRefPtr<WebCore::EventTarget>) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#14 0xb5725187 in WebCore::DocumentEventQueue::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#15 0xb57265cd in WebCore::DocumentEventQueue::pendingEventTimerFired() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#16 0xb5c9a803 in WebCore::ThreadTimers::sharedTimerFiredInternal() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#17 0xb5c9a885 in WebCore::ThreadTimers::sharedTimerFired() () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#18 0xb5f1a35e in WebCore::SharedTimerQt::timerEvent(QTimerEvent*) () from /usr/lib/i386-linux-gnu/libQtWebKit.so.4
#19 0xb37ce2d4 in QObject::event (this=0x8938b30, e=0xbf847b60) at kernel/qobject.cpp:1156
#20 0xb3d26c7c in QApplicationPrivate::notify_helper (this=0x8810000, receiver=0x8938b30, e=0xbf847b60) at kernel/qapplication.cpp:4567
#21 0xb3d29b94 in QApplication::notify (this=0xbf847b60, receiver=0x8938b30, e=0xbf847b60) at kernel/qapplication.cpp:3949
#22 0xb5032491 in KApplication::notify (this=0xbf847e98, receiver=0x8938b30, event=0xbf847b60) at ../../kdeui/kernel/kapplication.cpp:311
#23 0xb37b290e in QCoreApplication::notifyInternal (this=0xbf847e98, receiver=0x8938b30, event=event@entry=0xbf847b60) at kernel/qcoreapplication.cpp:946
#24 0xb37e78c0 in sendEvent (event=0xbf847b60, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#25 QTimerInfoList::activateTimers (this=this@entry=0x880ff4c) at kernel/qeventdispatcher_unix.cpp:622
#26 0xb37e45a8 in timerSourceDispatch (source=0x880ff18) at kernel/qeventdispatcher_glib.cpp:186
#27 timerSourceDispatch (source=0x880ff18) at kernel/qeventdispatcher_glib.cpp:180
#28 0xb2fa43b3 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#29 0xb2fa4750 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#30 0xb2fa4831 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#31 0xb37e4c21 in QEventDispatcherGlib::processEvents (this=this@entry=0x87d4ef8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#32 0xb3ddda5a in QGuiEventDispatcherGlib::processEvents (this=0x87d4ef8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#33 0xb37b13ec in QEventLoop::processEvents (this=this@entry=0xbf847dc8, flags=...) at kernel/qeventloop.cpp:149
#34 0xb37b16e1 in QEventLoop::exec (this=this@entry=0xbf847dc8, flags=...) at kernel/qeventloop.cpp:204
#35 0xb37b73fa in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1218
#36 0xb3d24fc4 in QApplication::exec () at kernel/qapplication.cpp:3828
#37 0xb7723725 in kdemain (argc=1, argv=0xbf847f84) at /build/buildd/rekonq-2.2.1/src/main.cpp:240
#38 0x0804854b in main (argc=1, argv=0xbf847f84) at /build/buildd/rekonq-2.2.1/obj-i686-linux-gnu/src/rekonq_dummy.cpp:3

Possible duplicates by query: bug 324561, bug 324302, bug 324271, bug 324270, bug 324268.

Reported using DrKonqi