On Monday 30 June 2014 00:05:10 šumski wrote: > On Thursday 26 of June 2014 12:14:49 Milian Wolff wrote: > > Hey, > > > > did you run it through valgrind? > > Here's what valgrind says:
Sounds like a bug in Qt to me, I have to say. Looking at the code, QDBusConnectionPrivate::objectDestroyed looks pretty fragile, I mean it does this at the end: obj->disconnect(this); But from the code in QDBusConnectionPrivate::disconnectSignal nothing jumps out as dangerous directly. The fact, that valgrind is getting confused in the stack trace is not helping either ;-) Could you maybe try to compile qtbase in debug mode and reproduce the issue, such that we get a full stacktrace without optimizations etc.? Anyways, maybe Thiago (CC'ed) can give us some insight on whats going on here. Bye > ==30114== Invalid read of size 8 > ==30114== at 0xDF080C1: > QDBusConnectionPrivate::disconnectSignal(QHash<QString, > QDBusConnectionPrivate::SignalHook>::iterator&) (qstring.h:814) > ==30114== by 0xDF08430: QDBusConnectionPrivate::objectDestroyed(QObject*) > (qdbusintegrator.cpp:1227) > ==30114== by 0xDF4F37B: > QDBusConnectionPrivate::qt_static_metacall(QObject*, QMetaObject::Call, int, > void**) (moc_qdbusconnection_p.cpp:131) > ==30114== by 0x52F601D: QMetaObject::activate(QObject*, int, int, void**) > (qobject.cpp:3680) > ==30114== by 0x52F656E: QObject::destroyed(QObject*) > (moc_qobject.cpp:205) ==30114== by 0x52FDA07: QObject::~QObject() > (qobject.cpp:901) > ==30114== by 0xDCD5228: PolkitQt1::Authority::~Authority() (polkitqt1- > authority.cpp:164) > ==30114== by 0xDCD4DE1: PolkitQt1::(anonymous > namespace)::Q_QGS_s_globalAuthority::innerFunction()::Holder::~Holder() > (polkitqt1-authority.cpp:40) > ==30114== by 0x5C62F78: __run_exit_handlers (in /lib64/libc-2.19.so) > ==30114== by 0x5C62FC4: exit (in /lib64/libc-2.19.so) > ==30114== by 0x5C4CB0B: (below main) (in /lib64/libc-2.19.so) > ==30114== Address 0x0 is not stack'd, malloc'd or (recently) free'd > ==30114== > ==30114== > ==30114== Process terminating with default action of signal 11 (SIGSEGV) > ==30114== Access not within mapped region at address 0x0 > ==30114== at 0xDF080C1: > QDBusConnectionPrivate::disconnectSignal(QHash<QString, > QDBusConnectionPrivate::SignalHook>::iterator&) (qstring.h:814) > ==30114== by 0xDF08430: QDBusConnectionPrivate::objectDestroyed(QObject*) > (qdbusintegrator.cpp:1227) > ==30114== by 0xDF4F37B: > QDBusConnectionPrivate::qt_static_metacall(QObject*, QMetaObject::Call, int, > void**) (moc_qdbusconnection_p.cpp:131) > ==30114== by 0x52F601D: QMetaObject::activate(QObject*, int, int, void**) > (qobject.cpp:3680) > ==30114== by 0x52F656E: QObject::destroyed(QObject*) > (moc_qobject.cpp:205) ==30114== by 0x52FDA07: QObject::~QObject() > (qobject.cpp:901) > ==30114== by 0xDCD5228: PolkitQt1::Authority::~Authority() (polkitqt1- > authority.cpp:164) > ==30114== by 0xDCD4DE1: PolkitQt1::(anonymous > namespace)::Q_QGS_s_globalAuthority::innerFunction()::Holder::~Holder() > (polkitqt1-authority.cpp:40) > ==30114== by 0x5C62F78: __run_exit_handlers (in /lib64/libc-2.19.so) > ==30114== by 0x5C62FC4: exit (in /lib64/libc-2.19.so) > ==30114== by 0x5C4CB0B: (below main) (in /lib64/libc-2.19.so) > > > On Wednesday 25 June 2014 23:17:29 Luca Beltrame wrote: > > > šumski wrote: > > > > http://paste.opensuse.org/view/raw/45956382 > > > > > > In case the pastebin link expires: > > > > > > #0 QString (other=..., this=0x7fff18fa23b0) at > > > ../../src/corelib/tools/qstring.h:814 > > > #1 dbusInterfaceString () at qdbusintegrator.cpp:87 > > > #2 QDBusConnectionPrivate::disconnectSignal (this=this@entry=0xa93640, > > > it=...) at qdbusintegrator.cpp:2270 > > > #3 0x00007fde826414b1 in QDBusConnectionPrivate::objectDestroyed > > > (this=0xa93640, obj=0xa6f720) at qdbusintegrator.cpp:1228 > > > #4 0x00007fde826883bc in QDBusConnectionPrivate::qt_static_metacall > > > (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, > > > _a=<optimized out>) > > > > > > at .moc/moc_qdbusconnection_p.cpp:131 > > > > > > #5 0x00007fde83ebcd7e in QMetaObject::activate > > > (sender=sender@entry=0xa6f720, signalOffset=<optimized out>, > > > local_signal_index=local_signal_index@entry=0, > > > > > > argv=argv@entry=0x7fff18fa2610) at kernel/qobject.cpp:3680 > > > > > > #6 0x00007fde83ebd237 in QMetaObject::activate > > > (sender=sender@entry=0xa6f720, m=m@entry=0x7fde842caf00 > > > <QObject::staticMetaObject>, > > > > > > local_signal_index=local_signal_index@entry=0, > > > > > > argv=argv@entry=0x7fff18fa2610) at kernel/qobject.cpp:3546 > > > #7 0x00007fde83ebd2cf in QObject::destroyed (this=this@entry=0xa6f720, > > > _t1=_t1@entry=0xa6f720) at .moc/moc_qobject.cpp:205 > > > #8 0x00007fde83ec4768 in QObject::~QObject (this=0xa6f720, > > > __in_chrg=<optimized out>) at kernel/qobject.cpp:901 > > > #9 0x00007fde7b36ae39 in PolkitQt1::Authority::~Authority > > > (this=0xa6f720, __in_chrg=<optimized out>) > > > > > > at > > > /usr/src/debug/polkit-qt-1-0.103.0/core/polkitqt1-authority.cpp:164 > > > > > > #10 0x00007fde7b36aa62 in PolkitQt1::(anonymous > > > namespace)::Q_QGS_s_globalAuthority::innerFunction()::Holder::~Holder() > > > () > > > > > > at > > > /usr/src/debug/polkit-qt-1-0.103.0/core/polkitqt1-authority.cpp:40 > > > > > > #11 0x00007fde8337df99 in __run_exit_handlers () from /lib64/libc.so.6 > > > #12 0x00007fde8337dfe5 in exit () from /lib64/libc.so.6 > > > #13 0x00007fde83367b0c in __libc_start_main () from /lib64/libc.so.6 > > > #14 0x0000000000402021 in _start () at ../sysdeps/x86_64/start.S:122 -- Milian Wolff m...@milianw.de http://milianw.de _______________________________________________ Kde-frameworks-devel mailing list Kde-frameworks-devel@kde.org https://mail.kde.org/mailman/listinfo/kde-frameworks-devel