Bug 326455

Summary: printer jobs status manager crashed
Product: [Frameworks and Libraries] print-manager Reporter: Germano Massullo <germano.massullo>
Component: generalAssignee: Daniel Nicoletti <dantti12>
Status: RESOLVED FIXED    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: 4.10.5   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: http://commits.kde.org/print-manager/21e1129eeae8fc7f8af5189bf668792099bba790 Version Fixed In:
Sentry Crash Report:

Description Germano Massullo 2013-10-22 17:22:05 UTC 
Application: print-queue (0.3.0)
KDE Platform Version: 4.10.4
Qt Version: 4.8.4
Operating System: Linux 3.9.8-300.fc19.i686 i686
Distribution: "Fedora release 19 (Schrödinger’s Cat)"

-- Information about the crash:
- What I was doing when the application crashed:

I was trying to delete some printer jobs when the printer manager crashed.

-- Backtrace:
Application: Coda di stampa (print-queue), signal: Segmentation fault
Using host libthread_db library "/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0xb771b7c0 (LWP 7920))]

Thread 2 (Thread 0xb6233b40 (LWP 7921)):
#0  __GI___pthread_mutex_lock (mutex=0xb5900558) at pthread_mutex_lock.c:67
#1  0x474aa2c1 in g_mutex_lock (mutex=mutex@entry=0xb59004e0) at gthread-posix.c:210
#2  0x474659d5 in g_main_context_prepare (context=context@entry=0xb59004e0, priority=priority@entry=0xb62330e8) at gmain.c:3330
#3  0x4746631f in g_main_context_iterate (context=context@entry=0xb59004e0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3681
#4  0x47466569 in g_main_context_iteration (context=0xb59004e0, may_block=1) at gmain.c:3762
#5  0x47e926ff in QEventDispatcherGlib::processEvents (this=0xb5900468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#6  0x47e61114 in QEventLoop::processEvents (this=this@entry=0xb62331f8, flags=...) at kernel/qeventloop.cpp:149
#7  0x47e61451 in QEventLoop::exec (this=this@entry=0xb62331f8, flags=...) at kernel/qeventloop.cpp:204
#8  0x47d4cabd in QThread::exec (this=this@entry=0x8a0e958) at thread/qthread.cpp:542
#9  0x4823d17a in KCupsConnection::run (this=0x8a0e958) at /usr/src/debug/print-manager-4.10.4/libkcups/KCupsConnection.cpp:310
#10 0x47d4f470 in QThreadPrivate::start (arg=0x8a0e958) at thread/qthread_unix.cpp:338
#11 0x470b29da in start_thread (arg=0xb6233b40) at pthread_create.c:308
#12 0x46f9792e in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:131

Thread 1 (Thread 0xb771b7c0 (LWP 7920)):
[KCrash Handler]
#7  PrintQueueModel::modifyJob (this=0x8a35360, row=1, action=PrintQueueModel::Cancel, newDestName=..., parent=...) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueModel.cpp:423
#8  0x080564fd in PrintQueueUi::modifyJob (this=this@entry=0x88f04c0, action=action@entry=0, destName=...) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:499
#9  0x08056ac2 in PrintQueueUi::cancelJob (this=0x88f04c0) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:564
#10 0x080594d0 in PrintQueueUi::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at /usr/src/debug/print-manager-4.10.4/i686-redhat-linux-gnu/printqueue/PrintQueueUi.moc:84
#11 0x47e7777b in QMetaObject::activate (sender=sender@entry=0x8a20688, m=m@entry=0x48e67b88 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0xbfaaf358) at kernel/qobject.cpp:3539
#12 0x48bf9f3e in QAbstractButton::clicked (this=this@entry=0x8a20688, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#13 0x4890c9b2 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:548
#14 0x4890de08 in QAbstractButtonPrivate::click (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:541
#15 0x4890df0e in QAbstractButton::mouseReleaseEvent (this=0x8a20688, e=0xbfaaf844) at widgets/qabstractbutton.cpp:1123
#16 0x4854b984 in QWidget::event (this=this@entry=0x8a20688, event=event@entry=0xbfaaf844) at kernel/qwidget.cpp:8375
#17 0x4890efa2 in QAbstractButton::event (this=this@entry=0x8a20688, e=e@entry=0xbfaaf844) at widgets/qabstractbutton.cpp:1082
#18 0x489ab6cd in QPushButton::event (this=0x8a20688, e=0xbfaaf844) at widgets/qpushbutton.cpp:683
#19 0x484f0e14 in QApplicationPrivate::notify_helper (this=0x89050e8, receiver=receiver@entry=0x8a20688, e=0xbfaaf844) at kernel/qapplication.cpp:4562
#20 0x484f955c in QApplication::notify (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, e=e@entry=0xbfaaf844) at kernel/qapplication.cpp:4105
#21 0x49355585 in KApplication::notify (this=0xbfab2c7c, receiver=0x8a20688, event=0xbfaaf844) at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:311
#22 0x47e6270a in QCoreApplication::notifyInternal (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, event=event@entry=0xbfaaf844) at kernel/qcoreapplication.cpp:949
#23 0x484f71a4 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#24 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x8a20688, event=0xbfaaf844, alienWidget=0x8a20688, nativeWidget=0x88f04c0, buttonDown=buttonDown@entry=0x48e70c64 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3173
#25 0x48578658 in QETWidget::translateMouseEvent (this=0x88f04c0, event=event@entry=0xbfaafa5c) at kernel/qapplication_x11.cpp:4537
#26 0x48576d43 in QApplication::x11ProcessEvent (this=0xbfab2c7c, event=event@entry=0xbfaafa5c) at kernel/qapplication_x11.cpp:3660
#27 0x485a1b3b in x11EventSourceDispatch (s=s@entry=0x8909478, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#28 0x474660f6 in g_main_dispatch (context=0x89093a0, context@entry=0x88d78b0) at gmain.c:3054
#29 g_main_context_dispatch (context=context@entry=0x89093a0) at gmain.c:3630
#30 0x474664a8 in g_main_context_iterate (context=context@entry=0x89093a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3701
#31 0x47466569 in g_main_context_iteration (context=0x89093a0, may_block=1) at gmain.c:3762
#32 0x47e926ff in QEventDispatcherGlib::processEvents (this=this@entry=0x88dd000, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#33 0x485a1cef in QGuiEventDispatcherGlib::processEvents (this=0x88dd000, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#34 0x47e61114 in QEventLoop::processEvents (this=this@entry=0x8cd0ecc, flags=...) at kernel/qeventloop.cpp:149
#35 0x47e61451 in QEventLoop::exec (this=this@entry=0x8cd0ecc, flags=...) at kernel/qeventloop.cpp:204
#36 0x48244fd5 in KCupsRequest::waitTillFinished (this=this@entry=0x8cd0ec0) at /usr/src/debug/print-manager-4.10.4/libkcups/KCupsRequest.cpp:650
#37 0x0805650b in PrintQueueUi::modifyJob (this=this@entry=0x88f04c0, action=action@entry=0, destName=...) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:505
#38 0x08056ac2 in PrintQueueUi::cancelJob (this=0x88f04c0) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:564
#39 0x080594d0 in PrintQueueUi::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at /usr/src/debug/print-manager-4.10.4/i686-redhat-linux-gnu/printqueue/PrintQueueUi.moc:84
#40 0x47e7777b in QMetaObject::activate (sender=sender@entry=0x8a20688, m=m@entry=0x48e67b88 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0xbfaafee8) at kernel/qobject.cpp:3539
#41 0x48bf9f3e in QAbstractButton::clicked (this=this@entry=0x8a20688, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#42 0x4890c9b2 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:548
#43 0x4890de08 in QAbstractButtonPrivate::click (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:541
#44 0x4890df0e in QAbstractButton::mouseReleaseEvent (this=0x8a20688, e=0xbfab03d4) at widgets/qabstractbutton.cpp:1123
#45 0x4854b984 in QWidget::event (this=this@entry=0x8a20688, event=event@entry=0xbfab03d4) at kernel/qwidget.cpp:8375
#46 0x4890efa2 in QAbstractButton::event (this=this@entry=0x8a20688, e=e@entry=0xbfab03d4) at widgets/qabstractbutton.cpp:1082
#47 0x489ab6cd in QPushButton::event (this=0x8a20688, e=0xbfab03d4) at widgets/qpushbutton.cpp:683
#48 0x484f0e14 in QApplicationPrivate::notify_helper (this=0x89050e8, receiver=receiver@entry=0x8a20688, e=0xbfab03d4) at kernel/qapplication.cpp:4562
#49 0x484f955c in QApplication::notify (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, e=e@entry=0xbfab03d4) at kernel/qapplication.cpp:4105
#50 0x49355585 in KApplication::notify (this=0xbfab2c7c, receiver=0x8a20688, event=0xbfab03d4) at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:311
#51 0x47e6270a in QCoreApplication::notifyInternal (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, event=event@entry=0xbfab03d4) at kernel/qcoreapplication.cpp:949
#52 0x484f71a4 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#53 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x8a20688, event=0xbfab03d4, alienWidget=0x8a20688, nativeWidget=0x88f04c0, buttonDown=buttonDown@entry=0x48e70c64 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3173
#54 0x48578658 in QETWidget::translateMouseEvent (this=0x88f04c0, event=event@entry=0xbfab05ec) at kernel/qapplication_x11.cpp:4537
#55 0x48576d43 in QApplication::x11ProcessEvent (this=0xbfab2c7c, event=event@entry=0xbfab05ec) at kernel/qapplication_x11.cpp:3660
#56 0x485a1b3b in x11EventSourceDispatch (s=s@entry=0x8909478, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#57 0x474660f6 in g_main_dispatch (context=0x89093a0, context@entry=0x88d78b0) at gmain.c:3054
#58 g_main_context_dispatch (context=context@entry=0x89093a0) at gmain.c:3630
#59 0x474664a8 in g_main_context_iterate (context=context@entry=0x89093a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3701
#60 0x47466569 in g_main_context_iteration (context=0x89093a0, may_block=1) at gmain.c:3762
#61 0x47e926e0 in QEventDispatcherGlib::processEvents (this=this@entry=0x88dd000, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#62 0x485a1cef in QGuiEventDispatcherGlib::processEvents (this=0x88dd000, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#63 0x47e61114 in QEventLoop::processEvents (this=this@entry=0x8a58694, flags=...) at kernel/qeventloop.cpp:149
#64 0x47e61451 in QEventLoop::exec (this=this@entry=0x8a58694, flags=...) at kernel/qeventloop.cpp:204
#65 0x48244fd5 in KCupsRequest::waitTillFinished (this=this@entry=0x8a58688) at /usr/src/debug/print-manager-4.10.4/libkcups/KCupsRequest.cpp:650
#66 0x0805650b in PrintQueueUi::modifyJob (this=this@entry=0x88f04c0, action=action@entry=0, destName=...) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:505
#67 0x08056ac2 in PrintQueueUi::cancelJob (this=0x88f04c0) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:564
#68 0x080594d0 in PrintQueueUi::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at /usr/src/debug/print-manager-4.10.4/i686-redhat-linux-gnu/printqueue/PrintQueueUi.moc:84
#69 0x47e7777b in QMetaObject::activate (sender=sender@entry=0x8a20688, m=m@entry=0x48e67b88 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0xbfab0a78) at kernel/qobject.cpp:3539
#70 0x48bf9f3e in QAbstractButton::clicked (this=this@entry=0x8a20688, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#71 0x4890c9b2 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:548
#72 0x4890de08 in QAbstractButtonPrivate::click (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:541
#73 0x4890df0e in QAbstractButton::mouseReleaseEvent (this=0x8a20688, e=0xbfab0f64) at widgets/qabstractbutton.cpp:1123
#74 0x4854b984 in QWidget::event (this=this@entry=0x8a20688, event=event@entry=0xbfab0f64) at kernel/qwidget.cpp:8375
#75 0x4890efa2 in QAbstractButton::event (this=this@entry=0x8a20688, e=e@entry=0xbfab0f64) at widgets/qabstractbutton.cpp:1082
#76 0x489ab6cd in QPushButton::event (this=0x8a20688, e=0xbfab0f64) at widgets/qpushbutton.cpp:683
#77 0x484f0e14 in QApplicationPrivate::notify_helper (this=0x89050e8, receiver=receiver@entry=0x8a20688, e=0xbfab0f64) at kernel/qapplication.cpp:4562
#78 0x484f955c in QApplication::notify (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, e=e@entry=0xbfab0f64) at kernel/qapplication.cpp:4105
#79 0x49355585 in KApplication::notify (this=0xbfab2c7c, receiver=0x8a20688, event=0xbfab0f64) at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:311
#80 0x47e6270a in QCoreApplication::notifyInternal (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, event=event@entry=0xbfab0f64) at kernel/qcoreapplication.cpp:949
#81 0x484f71a4 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#82 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x8a20688, event=0xbfab0f64, alienWidget=0x8a20688, nativeWidget=0x88f04c0, buttonDown=buttonDown@entry=0x48e70c64 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3173
#83 0x48578658 in QETWidget::translateMouseEvent (this=0x88f04c0, event=event@entry=0xbfab117c) at kernel/qapplication_x11.cpp:4537
#84 0x48576d43 in QApplication::x11ProcessEvent (this=0xbfab2c7c, event=event@entry=0xbfab117c) at kernel/qapplication_x11.cpp:3660
#85 0x485a1b3b in x11EventSourceDispatch (s=s@entry=0x8909478, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#86 0x474660f6 in g_main_dispatch (context=0x89093a0, context@entry=0x88d78b0) at gmain.c:3054
#87 g_main_context_dispatch (context=context@entry=0x89093a0) at gmain.c:3630
#88 0x474664a8 in g_main_context_iterate (context=context@entry=0x89093a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3701
#89 0x47466569 in g_main_context_iteration (context=0x89093a0, may_block=1) at gmain.c:3762
#90 0x47e926e0 in QEventDispatcherGlib::processEvents (this=this@entry=0x88dd000, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#91 0x485a1cef in QGuiEventDispatcherGlib::processEvents (this=0x88dd000, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#92 0x47e61114 in QEventLoop::processEvents (this=this@entry=0x8ccdfac, flags=...) at kernel/qeventloop.cpp:149
#93 0x47e61451 in QEventLoop::exec (this=this@entry=0x8ccdfac, flags=...) at kernel/qeventloop.cpp:204
#94 0x48244fd5 in KCupsRequest::waitTillFinished (this=0x8ccdfa0) at /usr/src/debug/print-manager-4.10.4/libkcups/KCupsRequest.cpp:650
#95 0x08057071 in PrintQueueUi::showContextMenu (this=0x88f04c0, point=...) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:314
#96 0x0805952f in PrintQueueUi::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at /usr/src/debug/print-manager-4.10.4/i686-redhat-linux-gnu/printqueue/PrintQueueUi.moc:92
#97 0x47e7777b in QMetaObject::activate (sender=sender@entry=0x8a0aa10, m=m@entry=0x48e549fc <QWidget::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0xbfab15a8) at kernel/qobject.cpp:3539
#98 0x4853c4d6 in QWidget::customContextMenuRequested (this=0x8a0aa10, _t1=...) at .moc/release-shared/moc_qwidget.cpp:373
#99 0x4854be29 in QWidget::event (this=this@entry=0x8a0aa10, event=event@entry=0xbfab1b40) at kernel/qwidget.cpp:8556
#100 0x4895657d in QFrame::event (this=this@entry=0x8a0aa10, e=e@entry=0xbfab1b40) at widgets/qframe.cpp:557
#101 0x489e6670 in QAbstractScrollArea::viewportEvent (this=this@entry=0x8a0aa10, e=e@entry=0xbfab1b40) at widgets/qabstractscrollarea.cpp:1043
#102 0x48a8c2bc in QAbstractItemView::viewportEvent (this=this@entry=0x8a0aa10, event=event@entry=0xbfab1b40) at itemviews/qabstractitemview.cpp:1644
#103 0x48ad2cb7 in QTreeView::viewportEvent (this=0x8a0aa10, event=0xbfab1b40) at itemviews/qtreeview.cpp:1257
#104 0x489e6916 in viewportEvent (event=0xbfab1b40, this=<optimized out>) at widgets/qabstractscrollarea_p.h:100
#105 QAbstractScrollAreaFilter::eventFilter (this=0x892edb0, o=0x8a28878, e=0xbfab1b40) at widgets/qabstractscrollarea_p.h:116
#106 0x47e6287e in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=this@entry=0x89050e8, receiver=receiver@entry=0x8a28878, event=event@entry=0xbfab1b40) at kernel/qcoreapplication.cpp:1059
#107 0x484f0df2 in QApplicationPrivate::notify_helper (this=0x89050e8, receiver=receiver@entry=0x8a28878, e=0xbfab1b40) at kernel/qapplication.cpp:4558
#108 0x484f90a5 in QApplication::notify (this=0xbfab2c7c, receiver=receiver@entry=0x8a28878, e=e@entry=0xbfab1b40) at kernel/qapplication.cpp:4184
#109 0x49355585 in KApplication::notify (this=0xbfab2c7c, receiver=0x8a28878, event=0xbfab1b40) at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:311
#110 0x47e6270a in QCoreApplication::notifyInternal (this=0xbfab2c7c, receiver=receiver@entry=0x8a28878, event=0xbfab1b40) at kernel/qcoreapplication.cpp:949
#111 0x485786ed in sendSpontaneousEvent (event=0xbfab1b40, receiver=0x8a28878) at ../../src/corelib/kernel/qcoreapplication.h:234
#112 QETWidget::translateMouseEvent (this=0x88f04c0, event=event@entry=0xbfab1d7c) at kernel/qapplication_x11.cpp:4542
#113 0x48576d43 in QApplication::x11ProcessEvent (this=0xbfab2c7c, event=event@entry=0xbfab1d7c) at kernel/qapplication_x11.cpp:3660
#114 0x485a1b3b in x11EventSourceDispatch (s=s@entry=0x8909478, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#115 0x474660f6 in g_main_dispatch (context=0x89093a0, context@entry=0x88d78b0) at gmain.c:3054
#116 g_main_context_dispatch (context=context@entry=0x89093a0) at gmain.c:3630
#117 0x474664a8 in g_main_context_iterate (context=context@entry=0x89093a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3701
#118 0x47466569 in g_main_context_iteration (context=0x89093a0, may_block=1) at gmain.c:3762
#119 0x47e926e0 in QEventDispatcherGlib::processEvents (this=this@entry=0x88dd000, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#120 0x485a1cef in QGuiEventDispatcherGlib::processEvents (this=0x88dd000, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#121 0x47e61114 in QEventLoop::processEvents (this=this@entry=0x8cc645c, flags=...) at kernel/qeventloop.cpp:149
#122 0x47e61451 in QEventLoop::exec (this=this@entry=0x8cc645c, flags=...) at kernel/qeventloop.cpp:204
#123 0x48244fd5 in KCupsRequest::waitTillFinished (this=this@entry=0x8cc6450) at /usr/src/debug/print-manager-4.10.4/libkcups/KCupsRequest.cpp:650
#124 0x0805650b in PrintQueueUi::modifyJob (this=this@entry=0x88f04c0, action=action@entry=0, destName=...) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:505
#125 0x08056ac2 in PrintQueueUi::cancelJob (this=0x88f04c0) at /usr/src/debug/print-manager-4.10.4/printqueue/PrintQueueUi.cpp:564
#126 0x080594d0 in PrintQueueUi::qt_static_metacall (_o=<optimized out>, _id=<optimized out>, _a=<optimized out>, _c=<optimized out>) at /usr/src/debug/print-manager-4.10.4/i686-redhat-linux-gnu/printqueue/PrintQueueUi.moc:84
#127 0x47e7777b in QMetaObject::activate (sender=sender@entry=0x8a20688, m=m@entry=0x48e67b88 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0xbfab2208) at kernel/qobject.cpp:3539
#128 0x48bf9f3e in QAbstractButton::clicked (this=this@entry=0x8a20688, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#129 0x4890c9b2 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:548
#130 0x4890de08 in QAbstractButtonPrivate::click (this=this@entry=0x8a206a0) at widgets/qabstractbutton.cpp:541
#131 0x4890df0e in QAbstractButton::mouseReleaseEvent (this=0x8a20688, e=0xbfab26f4) at widgets/qabstractbutton.cpp:1123
#132 0x4854b984 in QWidget::event (this=this@entry=0x8a20688, event=event@entry=0xbfab26f4) at kernel/qwidget.cpp:8375
#133 0x4890efa2 in QAbstractButton::event (this=this@entry=0x8a20688, e=e@entry=0xbfab26f4) at widgets/qabstractbutton.cpp:1082
#134 0x489ab6cd in QPushButton::event (this=0x8a20688, e=0xbfab26f4) at widgets/qpushbutton.cpp:683
#135 0x484f0e14 in QApplicationPrivate::notify_helper (this=0x89050e8, receiver=receiver@entry=0x8a20688, e=0xbfab26f4) at kernel/qapplication.cpp:4562
#136 0x484f955c in QApplication::notify (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, e=e@entry=0xbfab26f4) at kernel/qapplication.cpp:4105
#137 0x49355585 in KApplication::notify (this=0xbfab2c7c, receiver=0x8a20688, event=0xbfab26f4) at /usr/src/debug/kdelibs-4.10.4/kdeui/kernel/kapplication.cpp:311
#138 0x47e6270a in QCoreApplication::notifyInternal (this=0xbfab2c7c, receiver=receiver@entry=0x8a20688, event=event@entry=0xbfab26f4) at kernel/qcoreapplication.cpp:949
#139 0x484f71a4 in sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../src/corelib/kernel/qcoreapplication.h:231
#140 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x8a20688, event=0xbfab26f4, alienWidget=0x8a20688, nativeWidget=0x88f04c0, buttonDown=buttonDown@entry=0x48e70c64 <qt_button_down>, lastMouseReceiver=..., spontaneous=spontaneous@entry=true) at kernel/qapplication.cpp:3173
#141 0x48578658 in QETWidget::translateMouseEvent (this=0x88f04c0, event=event@entry=0xbfab290c) at kernel/qapplication_x11.cpp:4537
#142 0x48576d43 in QApplication::x11ProcessEvent (this=0xbfab2c7c, event=event@entry=0xbfab290c) at kernel/qapplication_x11.cpp:3660
#143 0x485a1b3b in x11EventSourceDispatch (s=s@entry=0x8909478, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:148
#144 0x474660f6 in g_main_dispatch (context=0x89093a0, context@entry=0x88d78b0) at gmain.c:3054
#145 g_main_context_dispatch (context=context@entry=0x89093a0) at gmain.c:3630
#146 0x474664a8 in g_main_context_iterate (context=context@entry=0x89093a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3701
#147 0x47466569 in g_main_context_iteration (context=0x89093a0, may_block=1) at gmain.c:3762
#148 0x47e926e0 in QEventDispatcherGlib::processEvents (this=this@entry=0x88dd000, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#149 0x485a1cef in QGuiEventDispatcherGlib::processEvents (this=0x88dd000, flags=...) at kernel/qguieventdispatcher_glib.cpp:207
#150 0x47e61114 in QEventLoop::processEvents (this=this@entry=0xbfab2bc8, flags=...) at kernel/qeventloop.cpp:149
#151 0x47e61451 in QEventLoop::exec (this=this@entry=0xbfab2bc8, flags=...) at kernel/qeventloop.cpp:204
#152 0x47e66d7f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1221
#153 0x484ef265 in QApplication::exec () at kernel/qapplication.cpp:3823
#154 0x080516d6 in main (argc=1, argv=0xbfab2d54) at /usr/src/debug/print-manager-4.10.4/printqueue/main.cpp:55

Reported using DrKonqi
Comment 1 Daniel Nicoletti 2013-10-22 18:34:31 UTC 
Git commit 21e1129eeae8fc7f8af5189bf668792099bba790 by Daniel Nicoletti.
Committed on 22/10/2013 at 18:32.
Pushed by dantti into branch 'KDE/4.11'.

Make sure we have a valid job item.

M  +6    -0    libkcups/JobModel.cpp

http://commits.kde.org/print-manager/21e1129eeae8fc7f8af5189bf668792099bba790
Comment 2 Germano Massullo 2013-10-22 18:35:45 UTC 
excellent
Comment 3 Daniel Nicoletti 2013-10-22 18:43:47 UTC 
BTW I'm not entirely sure I've fixed the problem but from the backtrace I can't guess otherwise.