[Bug 193934] KDE crashes when switching between applications

[Stefano Fornari]

https://bugs.kde.org/show_bug.cgi?id=193934





--- Comment #2 from Stefano Fornari <stefano fornari gmail com>  2009-05-25 00:09:07 ---
This is the message:

A Fatal Error Occurred
The application KWin (kwin) crashed and caused the signal 11 (SIGSEGV).
Please help us improve the software you use by filing a report at
http://bugs.kde.org. Useful details include how to reproduce the error,
documents that were loaded, etc.

And this the details:

This backtrace appears to be of no use.
This is probably because your packages are built in a way which prevents
creation of proper backtraces, or the stack frame was seriously corrupted in
the crash.

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[Thread debugging using libthread_db enabled]
[New Thread 0xb62ba710 (LWP 3436)]
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0xb7f56430 in __kernel_vsyscall ()
[Current thread is 0 (process 3436)]

Thread 1 (Thread 0xb62ba710 (LWP 3436)):
#0  0xb7f56430 in __kernel_vsyscall ()
#1  0xb67e9780 in nanosleep () from /lib/tls/i686/cmov/libc.so.6
#2  0xb67e95be in sleep () from /lib/tls/i686/cmov/libc.so.6
#3  0xb7d108b2 in ?? () from /usr/lib/libkdeui.so.5
#4  0xb7d11274 in KCrash::defaultCrashHandler () from /usr/lib/libkdeui.so.5
#5  <signal handler called>
#6  0xb7e60bba in KWin::WindowPaintData::WindowPaintData () from
/usr/lib/libkwineffects.so.1
#7  0xb45e536c in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#8  0xb45e8642 in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#9  0xb7f293ff in ?? () from /usr/lib/libkdeinit4_kwin.so
#10 0xb7e5f3b6 in KWin::Effect::paintScreen () from
/usr/lib/libkwineffects.so.1
#11 0xb7f293ff in ?? () from /usr/lib/libkdeinit4_kwin.so
#12 0xb7e5f3b6 in KWin::Effect::paintScreen () from
/usr/lib/libkwineffects.so.1
#13 0xb7f293ff in ?? () from /usr/lib/libkdeinit4_kwin.so
#14 0xb461d8ed in ?? () from /usr/lib/kde4/kwin4_effect_builtins.so
#15 0xb7f293ff in ?? () from /usr/lib/libkdeinit4_kwin.so
#16 0xb7f15510 in ?? () from /usr/lib/libkdeinit4_kwin.so
#17 0xb7f214ba in ?? () from /usr/lib/libkdeinit4_kwin.so
#18 0xb7f10806 in ?? () from /usr/lib/libkdeinit4_kwin.so
#19 0xb7eabbad in ?? () from /usr/lib/libkdeinit4_kwin.so
#20 0xb6cf9ca8 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#21 0xb6cfa932 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#22 0xb6d35717 in QTimer::timeout () from /usr/lib/libQtCore.so.4
#23 0xb6cff6fe in QTimer::timerEvent () from /usr/lib/libQtCore.so.4
#24 0xb6cf415f in QObject::event () from /usr/lib/libQtCore.so.4
#25 0xb6f91e9c in QApplicationPrivate::notify_helper () from
/usr/lib/libQtGui.so.4
#26 0xb6f9a19e in QApplication::notify () from /usr/lib/libQtGui.so.4
#27 0xb7ca094d in KApplication::notify () from /usr/lib/libkdeui.so.5
#28 0xb7ec12ed in ?? () from /usr/lib/libkdeinit4_kwin.so
#29 0xb6ce3a3b in QCoreApplication::notifyInternal () from
/usr/lib/libQtCore.so.4
#30 0xb6d12d71 in ?? () from /usr/lib/libQtCore.so.4
#31 0xb6d0f4e0 in ?? () from /usr/lib/libQtCore.so.4
#32 0xb6429b88 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#33 0xb642d0eb in ?? () from /usr/lib/libglib-2.0.so.0
#34 0xb642d268 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#35 0xb6d0f438 in QEventDispatcherGlib::processEvents () from
/usr/lib/libQtCore.so.4
#36 0xb7033365 in ?? () from /usr/lib/libQtGui.so.4
#37 0xb6ce206a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#38 0xb6ce24aa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#39 0xb6ce4959 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#40 0xb6f91d17 in QApplication::exec () from /usr/lib/libQtGui.so.4
#41 0xb7ec5182 in kdemain () from /usr/lib/libkdeinit4_kwin.so
#42 0x08048732 in _start ()
#0  0xb7f56430 in __kernel_vsyscall ()

It is quite reproducible: Close a window and then quickly press alt-tab; I use
Box Switch as effect, but I am sure it happened also when I tried the other
effects.

HTH

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