Bug 311345

Application: ksysguard (4.9.3)
KDE Platform Version: 4.9.3
Qt Version: 4.8.3
Operating System: Linux 3.5.0-19-generic x86_64
Distribution: Ubuntu 12.10

-- Information about the crash:
- What I was doing when the application crashed:
I was viewing the process table with viewing mode "All Processes, Tree".  I used quick search to find a process (bash), raised its CPU scheduler priority, and deleted the text from the quick search bar.  Then I moved my mouse up to view the system load, and KSysGuard immediately closed due to a segmentation fault.

Currently 234 processes are running, but not all were being displayed by KSysGuard because it was on "All Processes, Tree" viewing mode, and only a few parent processes were expanded to show the children.

-- Backtrace:
Application: System Monitor (ksysguard), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd44ceb0780 (LWP 4851))]

Thread 4 (Thread 0x7fd4384d0700 (LWP 4852)):
#0  0x00007fd44c78e023 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fd44a3d6fe2 in QProcessManager::run (this=0x7fd44a750520 <processManager()::processManager>) at io/qprocess_unix.cpp:245
#2  0x00007fd44a2fbaec in QThreadPrivate::start (arg=0x7fd44a750520 <processManager()::processManager>) at thread/qthread_unix.cpp:338
#3  0x00007fd4447a7e9a in start_thread (arg=0x7fd4384d0700) at pthread_create.c:308
#4  0x00007fd44c794cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fd43611f700 (LWP 23236)):
#0  0x00007fd44c789303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd443c9cd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd443c9cea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd44a426c16 in QEventDispatcherGlib::processEvents (this=0x7fd4280008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4  0x00007fd44a3f72bf in QEventLoop::processEvents (this=this@entry=0x7fd43611edd0, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fd44a3f7548 in QEventLoop::exec (this=0x7fd43611edd0, flags=...) at kernel/qeventloop.cpp:204
#6  0x00007fd44a2f8b10 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7  0x00007fd44a3d79af in QInotifyFileSystemWatcherEngine::run (this=0x2855650) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fd44a2fbaec in QThreadPrivate::start (arg=0x2855650) at thread/qthread_unix.cpp:338
#9  0x00007fd4447a7e9a in start_thread (arg=0x7fd43611f700) at pthread_create.c:308
#10 0x00007fd44c794cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fd434b55700 (LWP 23246)):
#0  0x00007fd44c789303 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd443c9cd84 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd443c9d1e2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd43505d4a6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007fd443cc0645 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fd4447a7e9a in start_thread (arg=0x7fd434b55700) at pthread_create.c:308
#6  0x00007fd44c794cbd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd44ceb0780 (LWP 4851)):
[KCrash Handler]
#6  QSortFilterProxyModelPrivate::updateChildrenMapping (this=this@entry=0x2476120, source_parent=..., parent_mapping=parent_mapping@entry=0x3170ec0, orient=orient@entry=Qt::Vertical, start=start@entry=1, end=end@entry=1, delta_item_count=delta_item_count@entry=1, remove=remove@entry=true) at itemviews/qsortfilterproxymodel.cpp:948
#7  0x00007fd449d2d5c0 in source_items_removed (orient=Qt::Vertical, end=1, start=1, source_parent=..., this=<optimized out>) at itemviews/qsortfilterproxymodel.cpp:890
#8  QSortFilterProxyModelPrivate::source_items_removed (this=0x2476120, source_parent=..., start=1, end=<optimized out>, orient=Qt::Vertical) at itemviews/qsortfilterproxymodel.cpp:848
#9  0x00007fd44a40df5f in QMetaObject::activate (sender=0x24266f0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x7fffa7fecbc0) at kernel/qobject.cpp:3547
#10 0x00007fd44a457c84 in QAbstractItemModel::rowsRemoved (this=<optimized out>, _t1=..., _t2=1, _t3=1) at .moc/release-shared/moc_qabstractitemmodel.cpp:211
#11 0x00007fd44a3f1f0d in QAbstractItemModel::endRemoveRows (this=0x24266f0) at kernel/qabstractitemmodel.cpp:2487
#12 0x00007fd44a40df5f in QMetaObject::activate (sender=0x248f520, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#13 0x00007fd44b718b11 in KSysGuard::Processes::processesUpdated() () from /usr/lib/libprocesscore.so.4abi1
#14 0x00007fd44a40df5f in QMetaObject::activate (sender=0x24177e0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#15 0x00007fd44b717042 in KSysGuard::Processes::updateAllProcesses(long, QFlags<KSysGuard::Processes::UpdateFlag>) () from /usr/lib/libprocesscore.so.4abi1
#16 0x00007fd44c4804f2 in ProcessModel::update(long, QFlags<KSysGuard::Processes::UpdateFlag>) () from /usr/lib/libprocessui.so.4
#17 0x00007fd44c4760e6 in KSysGuardProcessList::updateList() () from /usr/lib/libprocessui.so.4
#18 0x00007fd44a40df5f in QMetaObject::activate (sender=0x24192a0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#19 0x00007fd44a40d26c in QObject::event (this=0x24192a0, e=<optimized out>) at kernel/qobject.cpp:1157
#20 0x00007fd44979fe9c in QApplicationPrivate::notify_helper (this=this@entry=0x2249550, receiver=receiver@entry=0x24192a0, e=e@entry=0x7fffa7fed7b0) at kernel/qapplication.cpp:4562
#21 0x00007fd4497a430a in QApplication::notify (this=0x223c600, receiver=0x24192a0, e=0x7fffa7fed7b0) at kernel/qapplication.cpp:4423
#22 0x00007fd44b0b11d6 in KApplication::notify (this=0x223c600, receiver=0x24192a0, event=0x7fffa7fed7b0) at ../../kdeui/kernel/kapplication.cpp:311
#23 0x00007fd44a3f856e in QCoreApplication::notifyInternal (this=0x223c600, receiver=0x24192a0, event=0x7fffa7fed7b0) at kernel/qcoreapplication.cpp:915
#24 0x00007fd44a429462 in sendEvent (event=0x7fffa7fed7b0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#25 QTimerInfoList::activateTimers (this=0x2251c80) at kernel/qeventdispatcher_unix.cpp:611
#26 0x00007fd44a426584 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:186
#27 timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:180
#28 0x00007fd44a4265a1 in idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:233
#29 0x00007fd443c9cab5 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007fd443c9cde8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007fd443c9cea4 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fd44a426bf6 in QEventDispatcherGlib::processEvents (this=0x22254b0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0x00007fd449844c1e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0x00007fd44a3f72bf in QEventLoop::processEvents (this=this@entry=0x7fffa7feda30, flags=...) at kernel/qeventloop.cpp:149
#35 0x00007fd44a3f7548 in QEventLoop::exec (this=0x7fffa7feda30, flags=...) at kernel/qeventloop.cpp:204
#36 0x00007fd44a3fc708 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1187
#37 0x00007fd44cac45a0 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_ksysguard.so
#38 0x00007fd44c6c276d in __libc_start_main (main=0x4006a0, argc=1, ubp_av=0x7fffa7fedca8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffa7fedc98) at libc-start.c:226
#39 0x00000000004006d1 in _start ()

This bug may be a duplicate of or related to bug 308996.

Possible duplicates by query: bug 308996, bug 306051.

Reported using DrKonqi