Bug 300722

Application: kcmshell4 ()
KDE Platform Version: 4.8.3 (4.8.3)
Qt Version: 4.8.1
Operating System: Linux 3.3.7-1.fc16.x86_64 x86_64
Distribution: "Fedora release 16 (Verne)"

-- Information about the crash:
- What I was doing when the application crashed:
Trying to disable vsync in Desktop Effects menu. Desktop Effects menu shuts down immediately after open attempt.

The crash can be reproduced every time.

-- Backtrace:
Application: KDE Control Module (kcmshell4), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
82	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[KCrash Handler]
#6  0x00007fceb9de3fab in ?? () from /usr/lib64/dri/fglrx_dri.so
#7  0x00007fceba6f96aa in eglReleaseThread () from /usr/lib64/dri/fglrx_dri.so
#8  0x00007fcebc3354db in KWin::CompositingPrefs::deleteEGLContext (this=0x250c2d8) at /usr/src/debug/kde-workspace-4.8.3/kwin/compositingprefs.cpp:373
#9  0x00007fcebc335784 in KWin::CompositingPrefs::detect (this=0x250c2d8) at /usr/src/debug/kde-workspace-4.8.3/kwin/compositingprefs.cpp:173
#10 0x00007fcebc329c2c in KWin::KWinCompositingConfig::updateStatusUI (this=0x250c070, compositingIsPossible=<optimized out>) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:369
#11 0x00007fcebc32c527 in KWin::KWinCompositingConfig::load (this=0x250c070) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:387
#12 0x00007fcebc32ad1c in KWin::KWinCompositingConfig::configChanged (this=0x250c070, reinitCompositing=true) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:605
#13 0x00007fcebc32c1e5 in KWin::KWinCompositingConfig::save (this=0x250c070) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:534
#14 0x00007fcebc3292d5 in KWin::KWinCompositingConfig::rearmGlSupport (this=0x250c070) at /usr/src/debug/kde-workspace-4.8.3/kwin/kcmkwin/kwincompositing/main.cpp:300
#15 0x0000003ae818d571 in QMetaObject::activate (sender=0x24e4b40, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffba649ba0) at kernel/qobject.cpp:3547
#16 0x0000003ae8e4c472 in QAbstractButton::clicked (this=<optimized out>, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#17 0x0000003ae8b8eaee in QAbstractButtonPrivate::emitClicked (this=0x24bca20) at widgets/qabstractbutton.cpp:548
#18 0x0000003ae8b8fe2b in QAbstractButtonPrivate::click (this=0x24bca20) at widgets/qabstractbutton.cpp:541
#19 0x0000003ae8b9009c in QAbstractButton::mouseReleaseEvent (this=0x24e4b40, e=0x7fffba64a470) at widgets/qabstractbutton.cpp:1123
#20 0x0000003ae881a0da in QWidget::event (this=0x24e4b40, event=0x7fffba64a470) at kernel/qwidget.cpp:8362
#21 0x0000003ae87c9bc4 in notify_helper (e=0x7fffba64a470, receiver=0x24e4b40, this=0x22b8e00) at kernel/qapplication.cpp:4554
#22 QApplicationPrivate::notify_helper (this=0x22b8e00, receiver=0x24e4b40, e=0x7fffba64a470) at kernel/qapplication.cpp:4526
#23 0x0000003ae87cf313 in QApplication::notify (this=<optimized out>, receiver=0x24e4b40, e=0x7fffba64a470) at kernel/qapplication.cpp:4097
#24 0x00000035b3c51ff6 in KApplication::notify (this=0x7fffba64b1b0, receiver=0x24e4b40, event=0x7fffba64a470) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#25 0x0000003ae81798dc in QCoreApplication::notifyInternal (this=0x7fffba64b1b0, receiver=0x24e4b40, event=0x7fffba64a470) at kernel/qcoreapplication.cpp:876
#26 0x0000003ae87cab92 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#27 QApplicationPrivate::sendMouseEvent (receiver=0x24e4b40, event=0x7fffba64a470, alienWidget=0x24e4b40, nativeWidget=0x246fd70, buttonDown=0x24e4b40, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3165
#28 0x0000003ae8846395 in QETWidget::translateMouseEvent (this=0x246fd70, event=<optimized out>) at kernel/qapplication_x11.cpp:4523
#29 0x0000003ae884525a in QApplication::x11ProcessEvent (this=0x7fffba64b1b0, event=0x7fffba64ad30) at kernel/qapplication_x11.cpp:3646
#30 0x0000003ae886cbdc in x11EventSourceDispatch (s=0x22be690, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#31 0x0000003ae6c44f3d in g_main_dispatch (context=0x22bcde0) at gmain.c:2441
#32 g_main_context_dispatch (context=0x22bcde0) at gmain.c:3011
#33 0x0000003ae6c45738 in g_main_context_iterate (context=0x22bcde0, block=<optimized out>, dispatch=1, self=<optimized out>) at gmain.c:3089
#34 0x0000003ae6c4590c in g_main_context_iteration (context=0x22bcde0, may_block=1) at gmain.c:3152
#35 0x0000003ae81a85bf in QEventDispatcherGlib::processEvents (this=0x2295770, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#36 0x0000003ae886c8ce in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:207
#37 0x0000003ae8178a12 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#38 0x0000003ae8178c67 in QEventLoop::exec (this=0x7fffba64b100, flags=...) at kernel/qeventloop.cpp:204
#39 0x0000003ae8c8eaa6 in QDialog::exec (this=0x246fd70) at dialogs/qdialog.cpp:554
#40 0x00000035b4207c3c in kdemain (_argc=<optimized out>, _argv=<optimized out>) at /usr/src/debug/kde-runtime-4.8.3/kcmshell/main.cpp:292
#41 0x00007fcec875969d in __libc_start_main (main=0x4006c0 <main(int, char**)>, argc=2, ubp_av=0x7fffba64b9c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffba64b9b8) at libc-start.c:226
#42 0x00000000004006f1 in _start ()

Reported using DrKonqi