Application: kwin (4.4.5 (KDE 4.4.5)) KDE Platform Version: 4.4.5 (KDE 4.4.5) Qt Version: 4.6.3 Operating System: FreeBSD 8.1-RELEASE amd64 Distribution (Platform): FreeBSD Ports -- Information about the crash: I am on PC-BSD 8.1. I have Dolphin, Firefox, konsole open. I pressed Alt-Tab, and then I got this crash. -- Backtrace: Application: KWin (kwin), signal: Segmentation fault: 11 [KCrash Handler] #6 0x00000008078f32a6 in longest_match () from /lib/libz.so.5 #7 0x00000008078f2230 in deflateParams () from /lib/libz.so.5 #8 0x00000008078f170c in deflate () from /lib/libz.so.5 #9 0x00000008078f58e2 in compress2 () from /lib/libz.so.5 #10 0x0000000802c038be in qCompress () from /usr/local/lib/qt4/libQtCore.so.4 #11 0x0000000801376cc3 in KPixmapCache::Private::writeData () from /usr/local/kde4/lib/libkdeui.so.7 #12 0x0000000801377f28 in KPixmapCache::insert () from /usr/local/kde4/lib/libkdeui.so.7 #13 0x0000000800e09336 in Plasma::Theme::invalidateRectsCache () from /usr/local/kde4/lib/libplasma.so.3 #14 0x0000000800e0fafb in Plasma::Theme::qt_metacall () from /usr/local/kde4/lib/libplasma.so.3 #15 0x0000000802d086e8 in QMetaObject::activate () from /usr/local/lib/qt4/libQtCore.so.4 #16 0x0000000802d06925 in QObject::event () from /usr/local/lib/qt4/libQtCore.so.4 #17 0x0000000801ff74df in QApplicationPrivate::notify_helper () from /usr/local/lib/qt4/libQtGui.so.4 #18 0x0000000801ffe51e in QApplication::notify () from /usr/local/lib/qt4/libQtGui.so.4 #19 0x00000008012cf8cf in KApplication::notify () from /usr/local/kde4/lib/libkdeui.so.7 #20 0x000000080069b705 in ?? () from /usr/local/kde4/lib/libkdeinit4_kwin.so #21 0x0000000802cf5f14 in QCoreApplication::notifyInternal () from /usr/local/lib/qt4/libQtCore.so.4 #22 0x0000000802d23474 in QTimerInfoList::activateTimers () from /usr/local/lib/qt4/libQtCore.so.4 #23 0x0000000802d210b4 in timerSourceDispatch () from /usr/local/lib/qt4/libQtCore.so.4 #24 0x0000000802d210d1 in idleTimerSourceDispatch () from /usr/local/lib/qt4/libQtCore.so.4 #25 0x0000000807e778e3 in g_main_context_dispatch () from /usr/local/lib/libglib-2.0.so.0 #26 0x0000000807e7b0e2 in g_main_context_check () from /usr/local/lib/libglib-2.0.so.0 #27 0x0000000807e7b6fb in g_main_context_iteration () from /usr/local/lib/libglib-2.0.so.0 #28 0x0000000802d2140c in QEventDispatcherGlib::processEvents () from /usr/local/lib/qt4/libQtCore.so.4 #29 0x00000008020a5fdf in QGuiEventDispatcherGlib::processEvents () from /usr/local/lib/qt4/libQtGui.so.4 #30 0x0000000802cf50bd in QEventLoop::processEvents () from /usr/local/lib/qt4/libQtCore.so.4 #31 0x0000000802cf53f6 in QEventLoop::exec () from /usr/local/lib/qt4/libQtCore.so.4 #32 0x0000000802cf759e in QCoreApplication::exec () from /usr/local/lib/qt4/libQtCore.so.4 #33 0x000000080069df3c in kdemain () from /usr/local/kde4/lib/libkdeinit4_kwin.so #34 0x00000000004008ae in ?? 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() #817 0x006e69776b2f6e69 in ?? () #818 0x247c8d48002454ff in ?? () #819 0x01a1c0c748006a10 in ?? () #820 0x66fdebf4050f0000 in ?? () #821 0x9066669066669066 in ?? () #822 0x00007fffffffe768 in ?? () #823 0x0000000000000003 in ?? () #824 0x00007fffffffe788 in ?? () #825 0x000000000000001e in ?? () Reported using DrKonqi
crashes in a system lib call of Qt on kpixmapcache used by plasma theming... there were issues with concurrent pixmap cache accesses in the past, but - long before 4.4.5 - alt+tab should not cause updates in plasma-desktop and kwin and the same time -> this is likely a bug in the system libz, any chance to update?
Thomas, the new plasma theme cache was merged in 4.5, so it probably is not a libz problem.
anyway the crashtrace is unfortunately rather useless. If you are able to reproduce, please install the debugging packages provided by your distrubution and update the crashtrace here. Thanks
Thanks. If the crash trace is useless, lets close it, I probably won't get around to installing the debugging packages.
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days, the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please set the bug status as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!