Application: kwin (4.6.2 (4.6.2))
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-11-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
Kde crash after i've clicked on firefox via start menu......

-- Backtrace:
Application: KWin (kwin), signal: Bus error
[Current thread is 1 (Thread 0x7f92a7e8b7a0 (LWP 3348))]

Thread 3 (Thread 0x7f928b84e700 (LWP 3358)):
#0  0x00007f92a76d2143 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007f92a3ab032c in qt_safe_select (nfds=18, fdread=0x1d57440, fdwrite=0x1d576d8, fdexcept=0x1d57970, orig_timeout=<value optimized out>) at kernel/qcore_unix.cpp:82
#2  0x00007f92a3ab53d0 in QEventDispatcherUNIXPrivate::doSelect (this=0x1d57280, flags=..., timeout=0x0) at kernel/qeventdispatcher_unix.cpp:219
#3  0x00007f92a3ab604a in QEventDispatcherUNIX::processEvents (this=0x1c90f10, flags=...) at kernel/qeventdispatcher_unix.cpp:919
#4  0x00007f92a3a87882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f92a3a87abc in QEventLoop::exec (this=0x7f928b84ddb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f92a399e924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f92a3a69c2f in QInotifyFileSystemWatcherEngine::run (this=0x1cce930) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f92a39a1175 in QThreadPrivate::start (arg=0x1cce930) at thread/qthread_unix.cpp:320
#9  0x00007f929e090d8c in start_thread (arg=0x7f928b84e700) at pthread_create.c:304
#10 0x00007f92a76da04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f928b03d700 (LWP 3359)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f92a65392a2 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f92a6852180) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f92a65392d9 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f92a6860254) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f929e090d8c in start_thread (arg=0x7f928b03d700) at pthread_create.c:304
#4  0x00007f92a76da04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f92a7e8b7a0 (LWP 3348)):
[KCrash Handler]
#6  0x00007f92a426bcdf in lock (this=0x7fffa6c9a270, _d=<value optimized out>) at ../../kdecore/util/kshareddatacache.cpp:1098
#7  cautiousLock (this=0x7fffa6c9a270, _d=<value optimized out>) at ../../kdecore/util/kshareddatacache.cpp:1121
#8  KSharedDataCache::Private::CacheLocker::CacheLocker (this=0x7fffa6c9a270, _d=<value optimized out>) at ../../kdecore/util/kshareddatacache.cpp:1146
#9  0x00007f92a42686e0 in KSharedDataCache::find (this=0x1272cc0, key=..., destination=0x7fffa6c9a320) at ../../kdecore/util/kshareddatacache.cpp:1462
#10 0x00007f92a7185e43 in KIconLoaderPrivate::findCachedPixmapWithPath (this=0x126c5c0, key=..., data=..., path=...) at ../../kdeui/icons/kiconloader.cpp:868
#11 0x00007f92a7188d39 in KIconLoader::loadIcon (this=0x125ae30, _name=<value optimized out>, group=KIconLoader::Small, size=16, state=0, overlays=..., path_store=0x0, canReturnNull=true) at ../../kdeui/icons/kiconloader.cpp:1231
#12 0x00007f928ddaf109 in KWin::StartupFeedbackEffect::start (this=0x1d21360, icon=...) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:298
#13 0x00007f928ddaf2a8 in KWin::StartupFeedbackEffect::gotNewStartup (this=0x1d21360, id=<value optimized out>, data=<value optimized out>) at ../../../kwin/effects/startupfeedback/startupfeedback.cpp:261
#14 0x00007f928dd3709a in KWin::StartupFeedbackEffect::qt_metacall (this=0x1d21360, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa6c9a8c0) at moc_startupfeedback.cpp:79
#15 0x00007f92a3a9d5f8 in QMetaObject::activate (sender=0x1f3e6c0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffa6c9a8c0) at kernel/qobject.cpp:3287
#16 0x00007f92a71f3247 in KStartupInfo::gotNewStartup (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>) at ./kstartupinfo.moc:106
#17 0x00007f92a71f65a3 in KStartupInfo::Private::new_startup_info_internal (this=0x1fd50b0, id_P=..., data_P=..., update_P=false) at ../../kdeui/kernel/kstartupinfo.cpp:363
#18 0x00007f92a71f774b in KStartupInfo::Private::got_startup_info (this=0x1fd50b0, msg_P=..., update_P=false) at ../../kdeui/kernel/kstartupinfo.cpp:301
#19 0x00007f92a71f81ab in KStartupInfo::Private::got_message (this=0x1fd50b0, msg_P=...) at ../../kdeui/kernel/kstartupinfo.cpp:230
#20 0x00007f92a71f83e2 in KStartupInfo::qt_metacall (this=0x1f3e6c0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffa6c9adf0) at ./kstartupinfo.moc:92
#21 0x00007f92a3a9d5f8 in QMetaObject::activate (sender=0x1fd50d8, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fffa6c9adf0) at kernel/qobject.cpp:3287
#22 0x00007f92a725e532 in KXMessages::gotMessage (this=<value optimized out>, _t1=<value optimized out>) at ./kxmessages.moc:84
#23 0x00007f92a725e80b in KXMessages::x11Event (this=0x1fd50d8, ev_P=0x7fffa6c9b5a0) at ../../kdeui/util/kxmessages.cpp:217
#24 0x00007f92a71d858e in publicx11Event (this=<value optimized out>, _event=0x7fffa6c9b5a0) at ../../kdeui/kernel/kapplication.cpp:918
#25 KApplication::x11EventFilter (this=<value optimized out>, _event=0x7fffa6c9b5a0) at ../../kdeui/kernel/kapplication.cpp:969
#26 0x00007f92a2eb48f5 in qt_x11EventFilter (ev=0x7fffa6c9b5a0) at kernel/qapplication_x11.cpp:440
#27 0x00007f92a2ec60a0 in QApplication::x11ProcessEvent (this=0x7fffa6c9b7e0, event=0x7fffa6c9b5a0) at kernel/qapplication_x11.cpp:3392
#28 0x00007f92a2ef0224 in QEventDispatcherX11::processEvents (this=0x117a340, flags=...) at kernel/qeventdispatcher_x11.cpp:132
#29 0x00007f92a3a87882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#30 0x00007f92a3a87abc in QEventLoop::exec (this=0x7fffa6c9b720, flags=...) at kernel/qeventloop.cpp:201
#31 0x00007f92a3a8becb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#32 0x00007f92a79e11ec in kdemain (argc=<value optimized out>, argv=0x7fffa6c9be78) at ../../kwin/main.cpp:542
#33 0x00007f92a7612eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=3, ubp_av=0x7fffa6c9be78, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffa6c9be68) at libc-start.c:226
#34 0x0000000000400669 in _start ()

Possible duplicates by query: bug 281904, bug 280606, bug 271892, bug 271890, bug 271889.

Reported using DrKonqi