Application: kwin (4.6.1 (4.6.1))
KDE Platform Version: 4.6.1 (4.6.1)
Qt Version: 4.7.2
Operating System: Linux 2.6.38.2 x86_64
Distribution: Debian GNU/Linux unstable (sid)

-- Information about the crash:
- What I was doing when the application crashed:
switched window in title of okular
- Unusual behavior I noticed:
kwin is grepping more and more cpu, from 4% at beginning of season to 40% after some hours working wiht kde

-- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fbb79c6e7a0 (LWP 14119))]

Thread 2 (Thread 0x7fbb5c029700 (LWP 14125)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fbb78328164 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7fbb786420e0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007fbb78328199 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7fbb786501b4) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007fbb76d1b373 in ?? () from /usr/lib/libGL.so.1
#4  0x00007fbb6feccb40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5  0x00007fbb794e136d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fbb79c6e7a0 (LWP 14119)):
[KCrash Handler]
#6  0x00007fbb789ae9c2 in Plasma::Corona::popupPosition (this=0x17e3e90, item=0x5ae8db0, s=..., alignment=<value optimized out>) at ../../plasma/corona.cpp:858
#7  0x00007fbb78a4b874 in Plasma::ToolTipManagerPrivate::showToolTip (this=0x1958e00) at ../../plasma/tooltipmanager.cpp:399
#8  0x00007fbb78a4bc15 in Plasma::ToolTipManager::qt_metacall (this=0x195d770, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffdd8aad50) at ./tooltipmanager.moc:88
#9  0x00007fbb757e718f in QMetaObject::activate (sender=0x192c050, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3278
#10 0x00007fbb757e5d19 in QObject::event (this=0x192c050, e=<value optimized out>) at kernel/qobject.cpp:1181
#11 0x00007fbb74b72d14 in QApplicationPrivate::notify_helper (this=0x1145090, receiver=0x192c050, e=0x7fffdd8ab490) at kernel/qapplication.cpp:4462
#12 0x00007fbb74b778da in QApplication::notify (this=<value optimized out>, receiver=0x192c050, e=0x7fffdd8ab490) at kernel/qapplication.cpp:4341
#13 0x00007fbb78fe9436 in KApplication::notify (this=0x7fffdd8ab8e0, receiver=0x192c050, event=0x7fffdd8ab490) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007fbb757d1c8c in QCoreApplication::notifyInternal (this=0x7fffdd8ab8e0, receiver=0x192c050, event=0x7fffdd8ab490) at kernel/qcoreapplication.cpp:731
#15 0x00007fbb757ff8ce in sendEvent (this=0x1145aa0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QTimerInfoList::activateTimers (this=0x1145aa0) at kernel/qeventdispatcher_unix.cpp:604
#17 0x00007fbb757ffa10 in QEventDispatcherUNIX::processEvents (this=0x10d0340, flags=...) at kernel/qeventdispatcher_unix.cpp:923
#18 0x00007fbb74c1a282 in QEventDispatcherX11::processEvents (this=0x10d0340, flags=...) at kernel/qeventdispatcher_x11.cpp:152
#19 0x00007fbb757d1022 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#20 0x00007fbb757d126c in QEventLoop::exec (this=0x7fffdd8ab7d0, flags=...) at kernel/qeventloop.cpp:201
#21 0x00007fbb757d576b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#22 0x00007fbb797ebada in kdemain (argc=<value optimized out>, argv=0x7fffdd8ab940) at ../../kwin/main.cpp:542
#23 0x00007fbb7942af6d in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffdd8abf68) at libc-start.c:228
#24 0x0000000000400699 in _start ()

This bug may be a duplicate of or related to bug 258925.

Possible duplicates by query: bug 267726, bug 264649.

Reported using DrKonqi