Bug#361127: alt-tab indeed crash kwin, but it can happen with windows not minimized, quite impressive result

To: Debian Bug Tracking System <361127@bugs.debian.org>
Subject: Bug#361127: alt-tab indeed crash kwin, but it can happen with windows not minimized, quite impressive result
From: David Delbecq <delbd@oma.be>
Date: Thu, 18 May 2006 11:28:43 +0200
Message-id: <[🔎] 20060518092843.3641.73220.reportbug@CAL-12.oma.be>
Reply-to: David Delbecq <delbd@oma.be>, 361127@bugs.debian.org

Package: kwin
Version: 4:3.5.2-2+b1
Followup-For: Bug #361127

I pressed alt-tab to switch to another window (obviously) at a moment i was in the following conditions
1) eclipse was running. One of it's nice popups had been made sticky (the f2 key in  eclipse) to do a copy and paste of content.
2) i did the copy
3) i pressed alt-tab with a sticky focused java swt popup containing selected text active
4) i immediatly received a crash report from kwin and no window manager and no more keyboard at all :D Had to logout

i was able to save the stacktrace by overwriting an existing file. (I had no keyboard at all to give it a name :p)
Good luck :D

Here follows stacktrace:

(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
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[Thread debugging using libthread_db enabled]
[New Thread -1501234976 (LWP 6513)]
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[KCrash handler]
#6  0xa6625e85 in KWinInternal::Workspace::nextFocusChainClient ()
   from /usr/lib/libkdeinit_kwin.so
#7  0xa66320db in KWinInternal::TabBox::createClientList ()
   from /usr/lib/libkdeinit_kwin.so
#8  0xa66387b8 in KWinInternal::TabBox::reset ()
   from /usr/lib/libkdeinit_kwin.so
#9  0xa6639020 in KWinInternal::Workspace::startKDEWalkThroughWindows ()
   from /usr/lib/libkdeinit_kwin.so
#10 0xa6659e67 in KWinInternal::Workspace::slotWalkThroughWindows ()
   from /usr/lib/libkdeinit_kwin.so
#11 0xa666f9f8 in KWinInternal::Workspace::qt_invoke ()
   from /usr/lib/libkdeinit_kwin.so
#12 0xa77e25ac in KGlobalAccelPrivate::activate ()
   from /usr/lib/libkdecore.so.4
#13 0xa78408cf in KGlobalAccelPrivate::x11KeyPress ()
   from /usr/lib/libkdecore.so.4
#14 0xa7840b0c in KGlobalAccelPrivate::x11Event ()
   from /usr/lib/libkdecore.so.4
#15 0xa786750f in KApplication::x11EventFilter ()
   from /usr/lib/libkdecore.so.4
#16 0xa666dc26 in KWinInternal::Application::x11EventFilter ()
   from /usr/lib/libkdeinit_kwin.so
#17 0xa7110423 in qt_set_x11_event_filter () from /usr/lib/libqt-mt.so.3
#18 0xa711d68f in QApplication::x11ProcessEvent () from /usr/lib/libqt-mt.so.3
#19 0xa71372a2 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#20 0xa71ab255 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#21 0xa71ab17a in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#22 0xa719138d in QApplication::exec () from /usr/lib/libqt-mt.so.3
#23 0xa666a7ef in kdemain () from /usr/lib/libkdeinit_kwin.so
#24 0xa7efd524 in kdeinitmain () from /usr/lib/kde3/kwin.so
#25 0x0804e1d6 in ?? ()
#26 0x00000003 in ?? ()
#27 0x08076300 in ?? ()
#28 0x00000001 in ?? ()
#29 0x00000000 in ?? ()


-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.16-1-686-smp
Locale: LANG=fr_BE, LC_CTYPE=fr_BE (charmap=ISO-8859-1) (ignored: LC_ALL set to fr_BE)

Versions of packages kwin depends on:
ii  kdelibs4c2a                 4:3.5.2-2+b1 core libraries for all KDE applica
ii  libart-2.0-2                2.3.17-1     Library of functions for 2D graphi
ii  libaudio2                   1.7-9        The Network Audio System (NAS). (s
ii  libc6                       2.3.6-7      GNU C Library: Shared libraries
ii  libfontconfig1              2.3.2-5.1    generic font configuration library
ii  libfreetype6                2.1.10-3     FreeType 2 font engine, shared lib
ii  libgcc1                     1:4.1.0-4    GCC support library
ii  libice6                     1:1.0.0-3    X11 Inter-Client Exchange library
ii  libidn11                    0.5.18-2     GNU libidn library, implementation
ii  libjpeg62                   6b-13        The Independent JPEG Group's JPEG 
ii  libpng12-0                  1.2.8rel-5.1 PNG library - runtime
ii  libqt3-mt                   3:3.3.6-2    Qt GUI Library (Threaded runtime v
ii  libsm6                      1:1.0.0-4    X11 Session Management library
ii  libstdc++6                  4.1.0-4      The GNU Standard C++ Library v3
ii  libx11-6                    2:1.0.0-6    X11 client-side library
ii  libxcomposite1              1:0.2.2.2-3  X11 Composite extension library
ii  libxcursor1                 1.1.5.2-5    X cursor management library
ii  libxdamage1                 1:1.0.2.2-3  X11 damaged region extension libra
ii  libxext6                    1:1.0.0-4    X11 miscellaneous extension librar
ii  libxfixes3                  1:3.0.1.2-4  X11 miscellaneous 'fixes' extensio
ii  libxft2                     2.1.8.2-7    FreeType-based font drawing librar
ii  libxi6                      1:1.0.0-5    X11 Input extension library
ii  libxinerama1                1:1.0.1-4    X11 Xinerama extension library
ii  libxrandr2                  2:1.1.0.2-4  X11 RandR extension library
ii  libxrender1                 1:0.9.0.2-4  X Rendering Extension client libra
ii  libxt6                      1:1.0.0-4    X11 toolkit intrinsics library
ii  zlib1g                      1:1.2.3-11   compression library - runtime

kwin recommends no packages.

-- no debconf information

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Follow-Ups:
- Bug#361127: alt-tab indeed crash kwin, but it can happen with windows not minimized, quite impressive result
  - From: Pierre Habouzit <madcoder@debian.org>

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