Application: plasma-desktop (0.4) KDE Platform Version: 4.8.1 (4.8.1) Qt Version: 4.8.0 Operating System: Linux 3.2.9-030209-generic i686 Distribution: Ubuntu 11.10 -- Information about the crash: - What I was doing when the application crashed: I added leave a note widget to desktop and tried to type a note. Then plasma crashed -- Backtrace: Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault [Current thread is 1 (Thread 0xb1da1720 (LWP 1624))] Thread 4 (Thread 0xa7c83b70 (LWP 1653)): #0 0xb2ea2d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1 #1 0xb634be35 in do_gettime (frac=0xa7c82ff0, sec=0xa7c82fe8) at tools/qelapsedtimer_unix.cpp:123 #2 qt_gettime () at tools/qelapsedtimer_unix.cpp:140 #3 0xb6435b56 in QTimerInfoList::updateCurrentTime (this=0xa6f69bc) at kernel/qeventdispatcher_unix.cpp:343 #4 0xb6435eaa in QTimerInfoList::timerWait (this=0xa6f69bc, tm=...) at kernel/qeventdispatcher_unix.cpp:450 #5 0xb64346c3 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xa7c830fc) at kernel/qeventdispatcher_glib.cpp:136 #6 0xb643475d in timerSourcePrepare (source=0xa6f6988, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169 #7 0xb2de888c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0 #8 0xb2de9637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #9 0xb2de9c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #10 0xb6435217 in QEventDispatcherGlib::processEvents (this=0xa755d48, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #11 0xb6400d6d in QEventLoop::processEvents (this=0xa7c83290, flags=...) at kernel/qeventloop.cpp:149 #12 0xb6401009 in QEventLoop::exec (this=0xa7c83290, flags=...) at kernel/qeventloop.cpp:204 #13 0xb62ea9dc in QThread::exec (this=0xa6fcaa8) at thread/qthread.cpp:501 #14 0xb63de2dd in QInotifyFileSystemWatcherEngine::run (this=0xa6fcaa8) at io/qfilesystemwatcher_inotify.cpp:248 #15 0xb62ede70 in QThreadPrivate::start (arg=0xa6fcaa8) at thread/qthread_unix.cpp:298 #16 0xb2f03d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0 #17 0xb75e146e in clone () from /lib/i386-linux-gnu/libc.so.6 Backtrace stopped: Not enough registers or memory available to unwind further Thread 3 (Thread 0xa631fb70 (LWP 1656)): #0 0xb75ef288 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6 #1 0xb2de870b in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0 #2 0xb2de9637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #3 0xb2de9c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #4 0xb6435217 in QEventDispatcherGlib::processEvents (this=0xa909878, flags=...) at kernel/qeventdispatcher_glib.cpp:426 #5 0xb6400d6d in QEventLoop::processEvents (this=0xa631f290, flags=...) at kernel/qeventloop.cpp:149 #6 0xb6401009 in QEventLoop::exec (this=0xa631f290, flags=...) at kernel/qeventloop.cpp:204 #7 0xb62ea9dc in QThread::exec (this=0xa906628) at thread/qthread.cpp:501 #8 0xb63de2dd in QInotifyFileSystemWatcherEngine::run (this=0xa906628) at io/qfilesystemwatcher_inotify.cpp:248 #9 0xb62ede70 in QThreadPrivate::start (arg=0xa906628) at thread/qthread_unix.cpp:298 #10 0xb2f03d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0 #11 0xb75e146e in clone () from /lib/i386-linux-gnu/libc.so.6 Backtrace stopped: Not enough registers or memory available to unwind further Thread 2 (Thread 0xa5b1eb70 (LWP 1657)): #0 0xb7725424 in __kernel_vsyscall () #1 0xb2f07a5c in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/i386-linux-gnu/libpthread.so.0 #2 0xb75ef09c in pthread_cond_wait () from /lib/i386-linux-gnu/libc.so.6 #3 0xb3e65009 in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4 #4 0xb3e6504f in ?? () from /usr/lib/i386-linux-gnu/libQtScript.so.4 #5 0xb2f03d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0 #6 0xb75e146e in clone () from /lib/i386-linux-gnu/libc.so.6 Backtrace stopped: Not enough registers or memory available to unwind further Thread 1 (Thread 0xb1da1720 (LWP 1624)): [KCrash Handler] #7 0xb63d9c77 in QProcessPrivate::waitForStarted (this=0xca465d8, msecs=30000) at io/qprocess_unix.cpp:1032 #8 0xb638e724 in QProcess::waitForStarted (this=0xbfc9d5c8, msecs=30000) at io/qprocess.cpp:1689 #9 0xa7fab7df in LeaveNote::slotSend (this=0xc573178) at ../../../applets/leavenote/leavenote.cpp:218 #10 0xa7fabb94 in LeaveNote::qt_metacall (this=0xc573178, _c=QMetaObject::InvokeMetaMethod, _id=<optimized out>, _a=0xbfc9d720) at ./leavenote.moc:82 #11 0xb64094fd in metacall (argv=0xbfc9d720, idx=66, cl=QMetaObject::InvokeMetaMethod, object=0xc573178) at kernel/qmetaobject.cpp:245 #12 QMetaObject::metacall (object=0xc573178, cl=QMetaObject::InvokeMetaMethod, idx=66, argv=0xbfc9d720) at kernel/qmetaobject.cpp:240 #13 0xb641921d in QMetaObject::activate (sender=0xc2c2ec8, m=0xb7507204, local_signal_index=2, argv=0x0) at kernel/qobject.cpp:3566 #14 0xb73e3fd5 in Plasma::PushButton::clicked (this=0xc2c2ec8) at ./pushbutton.moc:181 #15 0xb73e46a0 in Plasma::PushButton::qt_metacall (this=0xc2c2ec8, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0xbfc9d998) at ./pushbutton.moc:107 #16 0xb64094fd in metacall (argv=0xbfc9d998, idx=25, cl=QMetaObject::InvokeMetaMethod, object=0xc2c2ec8) at kernel/qmetaobject.cpp:245 #17 QMetaObject::metacall (object=0xc2c2ec8, cl=QMetaObject::InvokeMetaMethod, idx=25, argv=0xbfc9d998) at kernel/qmetaobject.cpp:240 #18 0xb641921d in QMetaObject::activate (sender=0xca835b8, m=0xb62797c8, local_signal_index=2, argv=0xbfc9d998) at kernel/qobject.cpp:3566 #19 0xb602660d in QAbstractButton::clicked (this=0xca835b8, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:220 #20 0xb5d1a33d in QAbstractButtonPrivate::emitClicked (this=0xbb1a238) at widgets/qabstractbutton.cpp:546 #21 0xb5d1b9ab in QAbstractButtonPrivate::click (this=0xbb1a238) at widgets/qabstractbutton.cpp:539 #22 0xb5d1bc66 in QAbstractButton::mouseReleaseEvent (this=0xca835b8, e=0xc051e38) at widgets/qabstractbutton.cpp:1121 #23 0xb594c9ec in QWidget::event (this=0xca835b8, event=0xc051e38) at kernel/qwidget.cpp:8361 #24 0xb5d1af09 in QAbstractButton::event (this=0xca835b8, e=0xc051e38) at widgets/qabstractbutton.cpp:1080 #25 0xb5dbe728 in QPushButton::event (this=0xca835b8, e=0xc051e38) at widgets/qpushbutton.cpp:683 #26 0xb58f2844 in notify_helper (e=0xc051e38, receiver=0xca835b8, this=0x9a95968) at kernel/qapplication.cpp:4555 #27 QApplicationPrivate::notify_helper (this=0x9a95968, receiver=0xca835b8, e=0xc051e38) at kernel/qapplication.cpp:4527 #28 0xb58f8994 in QApplication::notify (this=0x9a95968, receiver=0xca835b8, e=0xc051e38) at kernel/qapplication.cpp:4098 #29 0xb6a96051 in KApplication::notify (this=0x9a9d288, receiver=0xca835b8, event=0xc051e38) at ../../kdeui/kernel/kapplication.cpp:311 #30 0xb64021de in QCoreApplication::notifyInternal (this=0x9a9d288, receiver=0xca835b8, event=0xc051e38) at kernel/qcoreapplication.cpp:876 #31 0xb58f3805 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #32 QApplicationPrivate::sendMouseEvent (receiver=0xca835b8, event=0xc051e38, alienWidget=0x0, nativeWidget=0xca835b8, buttonDown=0xbfc9e0c8, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3166 #33 0xb5f9011c in QGraphicsProxyWidgetPrivate::sendWidgetMouseEvent (this=0xca82f98, event=0xbfc9e7b8) at graphicsview/qgraphicsproxywidget.cpp:283 #34 0xb5f7190f in QGraphicsItem::sceneEvent (this=0xc2c2ed0, event=0xbfc9e7b8) at graphicsview/qgraphicsitem.cpp:6741 #35 0xb5fced86 in QGraphicsWidget::sceneEvent (this=0xc2c2ec8, event=0xbfc9e7b8) at graphicsview/qgraphicswidget.cpp:1229 #36 0xb5f9b1ae in sendEvent (event=0xbfc9e7b8, item=0xc2c2ed0, this=<optimized out>) at graphicsview/qgraphicsscene.cpp:1217 #37 QGraphicsScenePrivate::sendEvent (this=0x9b97c20, item=0xc2c2ed0, event=0xbfc9e7b8) at graphicsview/qgraphicsscene.cpp:1193 #38 0xb5f9bde3 in QGraphicsScenePrivate::sendMouseEvent (this=0x9b97c20, mouseEvent=0xbfc9e7b8) at graphicsview/qgraphicsscene.cpp:1291 #39 0xb5f9c847 in QGraphicsScene::mouseReleaseEvent (this=0x9b8be60, mouseEvent=0xbfc9e7b8) at graphicsview/qgraphicsscene.cpp:4124 #40 0xb5faaf2c in QGraphicsScene::event (this=0x9b8be60, event=0xbfc9e7b8) at graphicsview/qgraphicsscene.cpp:3454 #41 0xb58f2844 in notify_helper (e=0xbfc9e7b8, receiver=0x9b8be60, this=0x9a95968) at kernel/qapplication.cpp:4555 #42 QApplicationPrivate::notify_helper (this=0x9a95968, receiver=0x9b8be60, e=0xbfc9e7b8) at kernel/qapplication.cpp:4527 #43 0xb58f7c7d in QApplication::notify (this=0xbfc9e7b8, receiver=0x9b8be60, e=0xbfc9e7b8) at kernel/qapplication.cpp:4284 #44 0xb6a96051 in KApplication::notify (this=0x9a9d288, receiver=0x9b8be60, event=0xbfc9e7b8) at ../../kdeui/kernel/kapplication.cpp:311 #45 0xb64021de in QCoreApplication::notifyInternal (this=0x9a9d288, receiver=0x9b8be60, event=0xbfc9e7b8) at kernel/qcoreapplication.cpp:876 #46 0xb58f091d in sendSpontaneousEvent (event=0xbfc9e7b8, receiver=0x9b8be60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234 #47 qt_sendSpontaneousEvent (receiver=0x9b8be60, event=0xbfc9e7b8) at kernel/qapplication.cpp:5549 #48 0xb5fc9fb8 in QGraphicsView::mouseReleaseEvent (this=0xb019070, event=0xbfc9eed4) at graphicsview/qgraphicsview.cpp:3338 #49 0xb594c9ec in QWidget::event (this=0xb019070, event=0xbfc9eed4) at kernel/qwidget.cpp:8361 #50 0xb5d66ad5 in QFrame::event (this=0xb019070, e=0xbfc9eed4) at widgets/qframe.cpp:557 #51 0xb5df9ac1 in QAbstractScrollArea::viewportEvent (this=0xb019070, e=0xbfc9eed4) at widgets/qabstractscrollarea.cpp:1043 #52 0xb5fcd27c in QGraphicsView::viewportEvent (this=0xb019070, event=0xbfc9eed4) at graphicsview/qgraphicsview.cpp:2866 #53 0xb5dfc226 in viewportEvent (this=<optimized out>, event=0xbfc9eed4) at widgets/qabstractscrollarea_p.h:100 #54 eventFilter (e=0xbfc9eed4, this=<optimized out>, o=<optimized out>) at widgets/qabstractscrollarea_p.h:116 #55 QAbstractScrollAreaFilter::eventFilter (this=0xae10d98, o=0xa251f60, e=0xbfc9eed4) at widgets/qabstractscrollarea_p.h:115 #56 0xb6402376 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=0x9a95968, receiver=0xa251f60, event=0xbfc9eed4) at kernel/qcoreapplication.cpp:986 #57 0xb58f2812 in notify_helper (e=0xbfc9eed4, receiver=0xa251f60, this=0x9a95968) at kernel/qapplication.cpp:4551 #58 QApplicationPrivate::notify_helper (this=0x9a95968, receiver=0xa251f60, e=0xbfc9eed4) at kernel/qapplication.cpp:4527 #59 0xb58f8994 in QApplication::notify (this=0x9a95968, receiver=0xa251f60, e=0xbfc9eed4) at kernel/qapplication.cpp:4098 #60 0xb6a96051 in KApplication::notify (this=0x9a9d288, receiver=0xa251f60, event=0xbfc9eed4) at ../../kdeui/kernel/kapplication.cpp:311 #61 0xb64021de in QCoreApplication::notifyInternal (this=0x9a9d288, receiver=0xa251f60, event=0xbfc9eed4) at kernel/qcoreapplication.cpp:876 #62 0xb58f3805 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231 #63 QApplicationPrivate::sendMouseEvent (receiver=0xa251f60, event=0xbfc9eed4, alienWidget=0xa251f60, nativeWidget=0xb019070, buttonDown=0xb6282cf4, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3166 #64 0xb597cce4 in QETWidget::translateMouseEvent (this=0xb019070, event=0xbfc9f38c) at kernel/qapplication_x11.cpp:4616 #65 0xb597bccd in QApplication::x11ProcessEvent (this=0x9a9d288, event=0xbfc9f38c) at kernel/qapplication_x11.cpp:3732 #66 0xb59a846c in x11EventSourceDispatch (s=0x9aa9c40, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146 #67 0xb2de925f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0 #68 0xb2de9990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0 #69 0xb2de9c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0 #70 0xb64351b7 in QEventDispatcherGlib::processEvents (this=0x9a4dea0, flags=...) at kernel/qeventdispatcher_glib.cpp:424 #71 0xb59a806a in QGuiEventDispatcherGlib::processEvents (this=0x9a4dea0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204 #72 0xb6400d6d in QEventLoop::processEvents (this=0xbfc9f694, flags=...) at kernel/qeventloop.cpp:149 #73 0xb6401009 in QEventLoop::exec (this=0xbfc9f694, flags=...) at kernel/qeventloop.cpp:204 #74 0xb640671a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148 #75 0xb58f06a4 in QApplication::exec () at kernel/qapplication.cpp:3816 #76 0xb76da72b in kdemain (argc=1, argv=0xbfc9f894) at ../../../../plasma/desktop/shell/main.cpp:120 #77 0x0804850b in main (argc=1, argv=0xbfc9f894) at plasma-desktop_dummy.cpp:3 Reported using DrKonqi
Do you have KNotes installed on your machine? If so, does it work standalone?
Yes it is installed. Plasma crashes when knotes is not running and then I write something in Leave a note widget and then hit "leave note" button. I can always reproduce the crash. When knotes is running (there is knotes icon in systray) this crash doesn't occur.
The LeaveNote applet code should start KNotes when it's not running and somehow it fails for you. Can you try to start KNotes from a terminal with the following: knotes --skip-note and see what happens please. Note that I am only reading the code where LeaveNote crashes for you, I don't have specific knowledge of it. I'll try to insta
ll it to try to reproduce. Another question: did you use LeaveNote in previous KDE versions and did it work?
(In reply to comment #3) > The LeaveNote applet code should start KNotes when it's not running and > somehow it fails for you. > Can you try to start KNotes from a terminal with the following: > knotes --skip-note > and see what happens please. Doesn't crash.
(In reply to comment #4) > Another question: did you use LeaveNote in previous KDE versions and did it > work? No I have never used KNotes nor Leave a note widget before. I know how to reproduce crash now (on kde 4.8.1 and on master from neon ppa). Steps to reproduce: 1) Make sure that KNotes is not running. 2) Add Leave a note widget to desktop. 3) Write something in widget and press "leave note" button.
Yes, thanks for the follow up, I also reproduced, exactly like you said. The line that crashes is leavenote.cpp line 218 when the process method is waitForStarted();
Patch waiting to be reviewed at https://git.reviewboard.kde.org/r/104484/
Git commit 124b62ad0873c56e2d734b34d0f727aaa8b3937d by Anne-Marie Mahfouf. Committed on 05/04/2012 at 11:39. Pushed by annma into branch 'master'. Fix QProcess call to start KNotes in LeaveNote Line 218 in leavenote.cpp knotes.waitForStarted(); was a red herring 4.8.3 104484 M +1 -3 applets/leavenote/leavenote.cpp http://commits.kde.org/kdeplasma-addons/124b62ad0873c56e2d734b34d0f727aaa8b3937d
*** Bug 299596 has been marked as a duplicate of this bug. ***
*** Bug 299463 has been marked as a duplicate of this bug. ***
*** Bug 299915 has been marked as a duplicate of this bug. ***