Bug 242223

Application: kwin (4.4.2 (KDE 4.4.2))
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic x86_64
Distribution: Ubuntu 10.04 LTS

-- Information about the crash:
This crash is a repeating one, seems to be happening from many sources. Freshly installed OS from the live-cd installer for Kubuntu.

 -- Backtrace:
Application: KWin (kwin), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f4ae66d6780 (LWP 2156))]

Thread 2 (Thread 0x7f4ac81e3710 (LWP 2157)):
#0  0x00007f4ae5f650fe in __pthread_exit (retval=<value optimized out>) at forward.c:164
#1  0x0000000000000001 in ?? ()
#2  0x00007f4ae5eee3ac in _L_lock_12430 () from /lib/libc.so.6
#3  0x00007f4ae5eece48 in *__GI___libc_free (mem=0x7f4ae61ece40) at malloc.c:3736
#4  0x00007f4ae1df9981 in socketNotifierSourceCheck (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:92
#5  0x00007f4adc568b0a in g_main_context_check () from /lib/libglib-2.0.so.0
#6  0x00007f4adc5694c3 in ?? () from /lib/libglib-2.0.so.0
#7  0x00007f4adc5698fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#8  0x00007f4ae1df9566 in QEventDispatcherGlib::processEvents (this=0x27001f0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#9  0x00007f4ae1dce992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#10 0x00007f4ae1dced6c in QEventLoop::exec (this=0x7f4ac81e2d90, flags=) at kernel/qeventloop.cpp:201
#11 0x00007f4ae1cd8d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#12 0x00007f4ae1daf178 in QInotifyFileSystemWatcherEngine::run (this=0x2763700) at io/qfilesystemwatcher_inotify.cpp:248
#13 0x00007f4ae1cdb775 in QThreadPrivate::start (arg=0x2763700) at thread/qthread_unix.cpp:248
#14 0x00007f4ae1a4b9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#15 0x00007f4ae5f5569d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
#16 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f4ae66d6780 (LWP 2156)):
[KCrash Handler]
#5  malloc_consolidate (av=0x7f4ae61ece40) at malloc.c:5136
#6  0x00007f4ae5ee9fad in _int_malloc (av=0x7f4ae61ece40, bytes=1152) at malloc.c:4370
#7  0x00007f4ae5eeb58e in *__GI___libc_malloc (bytes=1152) at malloc.c:3660
#8  0x00007f4ae43808b8 in XQueryTree (dpy=0x2334dc0, w=260, root=0x7fffe4b2c0c0, parent=0x7fffe4b2c0c0, children=0x7fffe4b2c0b8, nchildren=0x7fffe4b2c0cc) at ../../src/QuTree.c:58
#9  0x00007f4ae623be29 in KWin::Workspace::xStackingOrder (this=0x2444940) at ../../kwin/layers.cpp:763
#10 0x00007f4ae629cc0b in KWin::Workspace::performCompositing (this=<value optimized out>) at ../../kwin/composite.cpp:390
#11 0x00007f4ae62244be in KWin::Workspace::qt_metacall (this=0x2444940, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffe4b2c390) at ./workspace.moc:535
#12 0x00007f4ae1de2e3f in QMetaObject::activate (sender=0x2444db0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xc1) at kernel/qobject.cpp:3293
#13 0x00007f4ae1ddfa63 in QObject::event (this=0x2444db0, e=0x7fffe4b2cae0) at kernel/qobject.cpp:1212
#14 0x00007f4ae251c22c in QApplicationPrivate::notify_helper (this=0x232f880, receiver=0x2444db0, e=0x7fffe4b2cae0) at kernel/qapplication.cpp:4300
#15 0x00007f4ae25226fb in QApplication::notify (this=0x7fffe4b2ce40, receiver=0x2444db0, e=0x7fffe4b2cae0) at kernel/qapplication.cpp:4183
#16 0x00007f4ae5a59526 in KApplication::notify (this=0x7fffe4b2ce40, receiver=0x2444db0, event=0x7fffe4b2cae0) at ../../kdeui/kernel/kapplication.cpp:302
#17 0x00007f4ae1dd006c in QCoreApplication::notifyInternal (this=0x7fffe4b2ce40, receiver=0x2444db0, event=0x7fffe4b2cae0) at kernel/qcoreapplication.cpp:704
#18 0x00007f4ae1dfcd42 in QCoreApplication::sendEvent (this=0x2333580) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x2333580) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f4ae1df9848 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f4adc5658c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#23 0x00007f4adc569748 in ?? () from /lib/libglib-2.0.so.0
#24 0x00007f4adc5698fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#25 0x00007f4ae1df9513 in QEventDispatcherGlib::processEvents (this=0x23165b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#26 0x00007f4ae25cc46e in QGuiEventDispatcherGlib::processEvents (this=0x7f4ae61ece40, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f4ae1dce992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#28 0x00007f4ae1dced6c in QEventLoop::exec (this=0x7fffe4b2cd80, flags=) at kernel/qeventloop.cpp:201
#29 0x00007f4ae1dd2aab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#30 0x00007f4ae62407be in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../kwin/main.cpp:526
#31 0x00007f4ae5e8dc4d 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=0x7fffe4b2d348) at libc-start.c:226
#32 0x00000000004006b9 in _start ()

Possible duplicates by query: bug 226460.

Reported using DrKonqi