https://bugs.kde.org/show_bug.cgi?id=362907
Bug ID: 362907 Summary: kwin_x11 crashes in QtCurve::Style::disconnectDBus() Product: QtCurve Version: git Platform: Debian testing URL: https://bugs.debian.org/823674 OS: Linux Status: UNCONFIRMED Severity: crash Priority: NOR Component: qt5 Assignee: yyc1...@gmail.com Reporter: tehnic...@yandex.ru CC: h...@kde.org After updating QtCurve from 1.8.18+git20160112-0cd6aae (1.8.18-247-gd126bd5) to 1.8.18+git20160320-3d8622c (1.8.18-251-g3d8622c) users report about multiple kwin_x11 crashes at KDE startup. Typical backtrace looks like this: Program received signal SIGSEGV, Segmentation fault. 0xb52fdb78 in QDBusConnection::QDBusConnection(QDBusConnection const&) () from /usr/lib/i386-linux-gnu/libQt5DBus.so.5 (gdb) bt full #0 0xb52fdb78 in QDBusConnection::QDBusConnection(QDBusConnection const&) () from /usr/lib/i386-linux-gnu/libQt5DBus.so.5 No symbol table info available. #1 0xb53008f4 in QDBusConnection::sessionBus() () from /usr/lib/i386-linux-gnu/libQt5DBus.so.5 No symbol table info available. #2 0xb0a9d11a in QtCurve::Style::disconnectDBus (this=0x809f690) at ../../../qt5/style/qtcurve.cpp:694 cb = <optimized out> bus = {static staticMetaObject = {d = {superdata = 0x0, stringdata = 0xb5356e20, data = 0xb5356ce0, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x8062238} #3 0xb0a9d429 in QtCurve::Style::<lambda(void*)>::operator()(void *) (data=<optimized out>, __closure=<optimized out>) at ../../../qt5/style/qtcurve.cpp:663 No locals. #4 0xb0ae2678 in QtCurve::runAllCleanups () at ../../../qt5/style/qtcurve_plugin.cpp:86 func = <optimized out> data = <optimized out> #5 0xb0ae2884 in QtCurve::StylePlugin::~StylePlugin (this=0x809c310, __in_chrg=<optimized out>) at ../../../qt5/style/qtcurve_plugin.cpp:167 No locals. #6 0xb0ae28ca in QtCurve::StylePlugin::~StylePlugin (this=0x809c310, __in_chrg=<optimized out>) at ../../../qt5/style/qtcurve_plugin.cpp:170 No locals. #7 0xb6b198b5 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #8 0xb6b11c54 in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #9 0xb6b11e5a in ?? () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #10 0xb6b5cf3c in QObject::~QObject() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #11 0xb6b10e33 in QFactoryLoader::~QFactoryLoader() () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #12 0xb747beb8 in ?? () from /usr/lib/i386-linux-gnu/libQt5Widgets.so.5 No symbol table info available. #13 0xb7dfa933 in __run_exit_handlers (status=1, listp=0xb7f803dc <__exit_funcs>, run_list_atexit=true) at exit.c:82 atfct = <optimized out> onfct = <optimized out> cxafct = <optimized out> #14 0xb7dfa98f in __GI_exit (status=1) at exit.c:104 No locals. #15 0xb7f86e39 in ?? () from /usr/lib/i386-linux-gnu/libkdeinit5_kwin_x11.so No symbol table info available. ---Type <return> to continue, or q <return> to quit--- #16 0xb6b551d0 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #17 0xb6b55aad in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/i386-linux-gnu/sse2/libQt5Core.so.5 No symbol table info available. #18 0xb7a8e3e2 in KSelectionOwner::failedToClaimOwnership() () from /usr/lib/i386-linux-gnu/libKF5WindowSystem.so.5 No symbol table info available. #19 0xb7a79319 in KSelectionOwner::claim(bool, bool) () from /usr/lib/i386-linux-gnu/libKF5WindowSystem.so.5 No symbol table info available. #20 0xb7f87aab in ?? () from /usr/lib/i386-linux-gnu/libkdeinit5_kwin_x11.so No symbol table info available. #21 0xb7b91ff4 in KWin::Application::start() () from /usr/lib/i386-linux-gnu/libkwin.so.5 No symbol table info available. #22 0xb7f885ac in kdemain () from /usr/lib/i386-linux-gnu/libkdeinit5_kwin_x11.so No symbol table info available. #23 0x08048607 in main () No symbol table info available. Another example: https://bugs.debian.org/823674 Reproducible: Always Steps to Reproduce: 1. Login to KDE Plasma 5. 2. kwin_x11 crashes. 3. Close crash dialog window. 4. kwin_x11 crashes again. 5. Close crash dialog window. 6. kwin_x11 crashes again. 7. ... Actual Results: Despite this annoying crash dialog all programs works like expected. Or I have missed something... Expected Results: QtCurve should work as earlier after this code refactoring. System: up to date Debian testing or unstable Libraries: Qt -- 5.5.1, KF5 -- 5.16.0, kwin-x11 -- 5.4.3 -- You are receiving this mail because: You are watching all bug changes.