From kde-bugs-dist  Tue May 31 22:47:21 2016
From: Bruce Wolfe via KDE Bugzilla <bugzilla_noreply () kde ! org>
Date: Tue, 31 May 2016 22:47:21 +0000
To: kde-bugs-dist
Subject: [ksmserver] [Bug 363762] New: kmserver crash after come out of 'lock screen'
Message-Id: <bug-363762-17878 () http ! bugs ! kde ! org/>
X-MARC-Message: https://marc.info/?l=kde-bugs-dist&m=146473484717351

https://bugs.kde.org/show_bug.cgi?id=363762

            Bug ID: 363762
           Summary: kmserver crash after come out of 'lock screen'
           Product: ksmserver
           Version: unspecified
          Platform: Ubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: l.lunak@kde.org
          Reporter: brucew@alcoholjustice.org

Application: ksmserver ()

Qt Version: 5.5.1
Operating System: Linux 4.2.0-36-generic x86_64
Distribution: Ubuntu 15.10

-- Information about the crash:
- What I was doing when the application crashed: Either manually activating
'lock screen' or display sleep 

- Unusual behavior I noticed: No desktop manager or plasmashell; only existing
open applications alive

The crash can be reproduced every time.

-- Backtrace:
Application: ksmserver (ksmserver), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[KCrash Handler]
#6  QXcbScreen::mapToNative (this=this@entry=0x0, rect=...) at
qxcbscreen.cpp:267
#7  0x00007f1ef8f4d6e3 in QXcbWindow::mapToNative (this=<optimized out>,
rect=..., screen=0x0) at qxcbwindow.cpp:199
#8  0x00007f1ef8f4eedb in QXcbWindow::propagateSizeHints (this=0x2588b90) at
qxcbwindow.cpp:1606
#9  0x00007f1ef8f5406c in QXcbWindow::setGeometry (this=0x2588b90, rect=...) at
qxcbwindow.cpp:709
#10 0x00007f1f0e33534a in ?? () from
/usr/lib/x86_64-linux-gnu/libKScreenLocker.so.5
#11 0x00007f1f09ff3777 in QtPrivate::QSlotObjectBase::call (a=0x7ffcb727c3f0,
r=0x2370c10, this=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qobject_impl.h:124
#12 QMetaObject::activate (sender=sender@entry=0x2446c50,
signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=2,
argv=argv@entry=0x7ffcb727c3f0) at kernel/qobject.cpp:3698
#13 0x00007f1f09ff40e7 in QMetaObject::activate (sender=sender@entry=0x2446c50,
m=m@entry=0x7f1f0adc65a0 <QDesktopWidget::staticMetaObject>,
local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffcb727c3f0)
at kernel/qobject.cpp:3578
#14 0x00007f1f0a91b021 in QDesktopWidget::screenCountChanged
(this=this@entry=0x2446c50, _t1=_t1@entry=0) at .moc/moc_qdesktopwidget.cpp:218
#15 0x00007f1f0a91c39d in QDesktopWidgetPrivate::_q_updateScreens
(this=0x23aae40) at kernel/qdesktopwidget.cpp:117
#16 0x00007f1f09ff47b1 in QObject::event (this=this@entry=0x2446c50,
e=e@entry=0x24a0040) at kernel/qobject.cpp:1239
#17 0x00007f1f0a90474b in QWidget::event (this=0x2446c50, event=0x24a0040) at
kernel/qwidget.cpp:9105
#18 0x00007f1f0a8c19dc in QApplicationPrivate::notify_helper
(this=this@entry=0x23505a0, receiver=receiver@entry=0x2446c50,
e=e@entry=0x24a0040) at kernel/qapplication.cpp:3716
#19 0x00007f1f0a8c6ea6 in QApplication::notify (this=0x23519a0,
receiver=0x2446c50, e=0x24a0040) at kernel/qapplication.cpp:3499
#20 0x00007f1f09fc4d7b in QCoreApplication::notifyInternal (this=0x23519a0,
receiver=0x2446c50, event=event@entry=0x24a0040) at
kernel/qcoreapplication.cpp:965
#21 0x00007f1f09fc7176 in QCoreApplication::sendEvent (event=0x24a0040,
receiver=<optimized out>) at
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:224
#22 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0,
event_type=event_type@entry=0, data=0x234e940) at
kernel/qcoreapplication.cpp:1593
#23 0x00007f1f09fc7658 in QCoreApplication::sendPostedEvents
(receiver=receiver@entry=0x0, event_type=event_type@entry=0) at
kernel/qcoreapplication.cpp:1451
#24 0x00007f1f0a01b0e3 in postEventSourceDispatch (s=0x23b1a30) at
kernel/qeventdispatcher_glib.cpp:271
#25 0x00007f1f0400fff7 in g_main_context_dispatch () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f1f04010250 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f1f040102fc in g_main_context_iteration () from
/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f1f0a01b4ef in QEventDispatcherGlib::processEvents (this=0x23b1ad0,
flags=...) at kernel/qeventdispatcher_glib.cpp:418
#29 0x00007f1f09fc250a in QEventLoop::exec (this=this@entry=0x7ffcb727cac0,
flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#30 0x00007f1f09fca5ec in QCoreApplication::exec () at
kernel/qcoreapplication.cpp:1229
#31 0x00007f1f0a2ffd1c in QGuiApplication::exec () at
kernel/qguiapplication.cpp:1530
#32 0x00007f1f0a8bde15 in QApplication::exec () at kernel/qapplication.cpp:2976
#33 0x00007f1f0e92f136 in kdemain (argc=1, argv=<optimized out>) at
../../ksmserver/main.cpp:349
#34 0x00007f1f0e56eac0 in __libc_start_main (main=0x4007a0 <main(int, char**)>,
argc=1, argv=0x7ffcb727cd78, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffcb727cd68) at libc-start.c:289
#35 0x00000000004007d9 in _start ()

Possible duplicates by query: bug 362075, bug 354934.

Reported using DrKonqi

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