Application: kmail (2.0.89) KDE Platform Version: 4.5.67 (4.6 >= 20100901) (Compiled from sources) Qt Version: 4.6.3 Operating System: Linux 2.6.35-ARCH x86_64 Distribution (Platform): Archlinux Packages -- Information about the crash: - What I was doing when the application crashed: I had a composer window open, and typed a few things into the To: line edit, deleting them each time (the address I wanted wasn't in the address book). I then switched focus to the main window by clicking in the message pane, and KMail crashed. -- Backtrace: Application: KMail (kmail), signal: Segmentation fault [Current thread is 1 (Thread 0x7f69f5cb6760 (LWP 7122))] Thread 2 (Thread 0x7f69da401710 (LWP 7130)): #0 0x00007f69efe7040c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 #1 0x00007f69e86f9e30 in WTF::TCMalloc_PageHeap::scavengerThread() () from /usr/lib/libQtWebKit.so.4 #2 0x00007f69e86f9e69 in WTF::TCMalloc_PageHeap::runScavengerThread(void*) () from /usr/lib/libQtWebKit.so.4 #3 0x00007f69efe6bcb0 in start_thread () from /lib/libpthread.so.0 #4 0x00007f69ef4357ad in clone () from /lib/libc.so.6 #5 0x0000000000000000 in ?? () Thread 1 (Thread 0x7f69f5cb6760 (LWP 7122)): [KCrash Handler] #6 0x00007f69f01f40ab in QObjectPrivate::isSignalConnected (sender=0x91ae5e0, m=<value optimized out>, local_signal_index=6, argv=0x0) at kernel/qobject_p.h:222 #7 QMetaObject::activate (sender=0x91ae5e0, m=<value optimized out>, local_signal_index=6, argv=0x0) at kernel/qobject.cpp:3210 #8 0x00007f69f1287bb6 in QLineEdit::focusOutEvent (this=0x91ae5e0, e=<value optimized out>) at widgets/qlineedit.cpp:1830 #9 0x00007f69f572f4e8 in KLineEdit::focusOutEvent (this=0x91ae5e0, ev=0x7fff148933c0) at /home/kde-devel/src/KDE/kdelibs/kdeui/widgets/klineedit.cpp:1799 #10 0x00007f69f0edf1dc in QWidget::event (this=0x91ae5e0, event=0x7fff148933c0) at kernel/qwidget.cpp:8157 #11 0x00007f69f1285f11 in QLineEdit::event (this=0x91ae5e0, e=0x7fff148933c0) at widgets/qlineedit.cpp:1480 #12 0x00007f69f572d680 in KLineEdit::event (this=0x91ae5e0, ev=0x7fff148933c0) at /home/kde-devel/src/KDE/kdelibs/kdeui/widgets/klineedit.cpp:1394 #13 0x00007f69f0e8fae4 in QApplicationPrivate::notify_helper (this=0x266aac0, receiver=0x91ae5e0, e=0x7fff148933c0) at kernel/qapplication.cpp:4302 #14 0x00007f69f0e93bca in QApplication::notify (this=<value optimized out>, receiver=0x91ae5e0, e=0x7fff148933c0) at kernel/qapplication.cpp:4185 #15 0x00007f69f5647c8d in KApplication::notify (this=0x7fff14894040, receiver=0x91ae5e0, event=0x7fff148933c0) at /home/kde-devel/src/KDE/kdelibs/kdeui/kernel/kapplication.cpp:310 #16 0x00007f69f01dfd8c in QCoreApplication::notifyInternal (this=0x7fff14894040, receiver=0x91ae5e0, event=0x7fff148933c0) at kernel/qcoreapplication.cpp:726 #17 0x00007f69f0e8dc9d in QCoreApplication::sendEvent (focus=0x2b20f30, reason=Qt::ActiveWindowFocusReason) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215 #18 QApplicationPrivate::setFocusWidget (focus=0x2b20f30, reason=Qt::ActiveWindowFocusReason) at kernel/qapplication.cpp:2124 #19 0x00007f69f0ed2e21 in QWidget::setFocus (this=0x2b20f30, reason=Qt::ActiveWindowFocusReason) at kernel/qwidget.cpp:6161 #20 0x00007f69f0e931ed in QApplication::setActiveWindow (act=<value optimized out>) at kernel/qapplication.cpp:2480 #21 0x00007f69f0f0a25b in QApplication::x11ProcessEvent (this=0x7fff14894040, event=0x7fff14893be0) at kernel/qapplication_x11.cpp:3432 #22 0x00007f69f0f2f942 in x11EventSourceDispatch (s=0x266e540, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #23 0x00007f69e5ba1b33 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0 #24 0x00007f69e5ba2310 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0 #25 0x00007f69e5ba25ad in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0 #26 0x00007f69f020887f in QEventDispatcherGlib::processEvents (this=0x2287510, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412 #27 0x00007f69f0f2f60e in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204 #28 0x00007f69f01df172 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149 #29 0x00007f69f01df3ac in QEventLoop::exec (this=0x7fff14893ee0, flags=...) at kernel/qeventloop.cpp:201 #30 0x00007f69f01e37bb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1003 #31 0x0000000000403594 in main (argc=3, argv=0x7fff148941d8) at /home/kde-devel/src/KDE/kdepim/kmail/main.cpp:145 Reported using DrKonqi
Actually, simply typing stuff into the To: line and immediately deleting it all again causes this. Valgrind output: ==14221== Invalid read of size 8 ==14221== at 0xA5A5BD7: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (qobject.h:125) ==14221== by 0x95A2BB5: QLineEdit::focusOutEvent(QFocusEvent*) (qlineedit.cpp:1830) ==14221== by 0x51784E7: KLineEdit::focusOutEvent(QFocusEvent*) (klineedit.cpp:1799) ==14221== by 0x91FA1DB: QWidget::event(QEvent*) (qwidget.cpp:8157) ==14221== by 0x95A0F10: QLineEdit::event(QEvent*) (qlineedit.cpp:1480) ==14221== by 0x517667F: KLineEdit::event(QEvent*) (klineedit.cpp:1394) ==14221== by 0x91AAAE3: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:4302) ==14221== by 0x91AEBC9: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:4185) ==14221== by 0x5090C8C: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:310) ==14221== by 0xA591D8B: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:726) ==14221== by 0x91A8C9C: QApplicationPrivate::setFocusWidget(QWidget*, Qt::FocusReason) (qcoreapplication.h:215) ==14221== by 0x91EDE20: QWidget::setFocus(Qt::FocusReason) (qwidget.cpp:6161) ==14221== Address 0x1a837ae8 is 8 bytes inside a block of size 80 free'd ==14221== at 0x4C24D9E: operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==14221== by 0xE8CC2CF: MessageComposer::RecipientLineEdit::~RecipientLineEdit() (recipientline.h:49) ==14221== by 0xA5A2AC3: QObjectPrivate::deleteChildren() (qobject.cpp:1978) ==14221== by 0x91FDCA4: QWidget::~QWidget() (qwidget.cpp:1476) ==14221== by 0xE8CBA5D: KPIM::MultiplyingLine::~MultiplyingLine() (in /home/kde-devel/kde/lib/libmessagecomposer.so.4.6.0) ==14221== by 0xE8CBB25: MessageComposer::RecipientLineNG::~RecipientLineNG() (in /home/kde-devel/kde/lib/libmessagecomposer.so.4.6.0) ==14221== by 0xE8CBB81: MessageComposer::RecipientLineNG::~RecipientLineNG() (recipientline.h:68) ==14221== by 0x62854A9: KPIM::MultiplyingLineView::slotDeleteLine() (multiplyinglineview_p.cpp:180) ==14221== by 0x6285358: KPIM::MultiplyingLineView::slotDecideLineDeletion(KPIM::MultiplyingLine*) (multiplyinglineview_p.cpp:152) ==14221== by 0x6286439: KPIM::MultiplyingLineView::qt_metacall(QMetaObject::Call, int, void**) (multiplyinglineview_p.moc:121) ==14221== by 0xA5A5DEE: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (qobject.cpp:3287) ==14221== by 0x6283714: KPIM::MultiplyingLine::deleteLine(KPIM::MultiplyingLine*) (multiplyingline.moc:138) ==14221== ==14221== Invalid read of size 4 ==14221== at 0xA5A60AB: QMetaObject::activate(QObject*, QMetaObject const*, int, void**) (qobject_p.h:222) ==14221== by 0x95A2BB5: QLineEdit::focusOutEvent(QFocusEvent*) (qlineedit.cpp:1830) ==14221== by 0x51784E7: KLineEdit::focusOutEvent(QFocusEvent*) (klineedit.cpp:1799) ==14221== by 0x91FA1DB: QWidget::event(QEvent*) (qwidget.cpp:8157) ==14221== by 0x95A0F10: QLineEdit::event(QEvent*) (qlineedit.cpp:1480) ==14221== by 0x517667F: KLineEdit::event(QEvent*) (klineedit.cpp:1394) ==14221== by 0x91AAAE3: QApplicationPrivate::notify_helper(QObject*, QEvent*) (qapplication.cpp:4302) ==14221== by 0x91AEBC9: QApplication::notify(QObject*, QEvent*) (qapplication.cpp:4185) ==14221== by 0x5090C8C: KApplication::notify(QObject*, QEvent*) (kapplication.cpp:310) ==14221== by 0xA591D8B: QCoreApplication::notifyInternal(QObject*, QEvent*) (qcoreapplication.cpp:726) ==14221== by 0x91A8C9C: QApplicationPrivate::setFocusWidget(QWidget*, Qt::FocusReason) (qcoreapplication.h:215) ==14221== by 0x91EDE20: QWidget::setFocus(Qt::FocusReason) (qwidget.cpp:6161) ==14221== Address 0x60 is not stack'd, malloc'd or (recently) free'd ==14221== *** KMail got signal 11 (Exiting)
Additional note: the activate() call that crashes is trying to emit the QT3_SUPPORT lostFocus() signal, and the reason for the crash is that sender->d_func() evaluates to 0 (presumeably because sender refers to a deleted QObject).
Hej Alex, can you still reporduce this with current version? Works fine for me, can't get it to crash. Ciao, Tobias
No, although I don't use KMail much any more. I'll close this WORKSFORME, and reopen it if it happens again.