root@LGwebOSTV:~# gdb /usr/bin/qml-runner
GNU gdb (GDB) 7.5.1
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "arm-starfish-linux-gnueabi".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /usr/bin/qml-runner...(no debugging symbols found)...done.
(gdb) core /cores/core.QThread.6327.LGwebOSTV.1416556979
[New LWP 7072]
[New LWP 7076]
[New LWP 7077]
[New LWP 6328]
[New LWP 6330]
[New LWP 6329]
[New LWP 6337]
[New LWP 6327]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
Core was generated by `qml-runner --interactive'.
Program terminated with signal 5, Trace/breakpoint trap.
#0  0x0000b334 in QObject::event(QEvent*) ()
(gdb) info threads
  Id   Target Id         Frame
  8    Thread 0x745ef000 (LWP 6327) 0x7625e19c in __lll_lock_wait_private () from /lib/libc.so.6
  7    Thread 0x72662400 (LWP 6337) 0x76247f30 in poll () from /lib/libc.so.6
  6    Thread 0x73dee400 (LWP 6329) 0x7624d35c in syscall () from /lib/libc.so.6
  5    Thread 0x73368400 (LWP 6330) 0x76247f30 in poll () from /lib/libc.so.6
  4    Thread 0x745ee400 (LWP 6328) 0x7624d35c in syscall () from /lib/libc.so.6
  3    Thread 0x6efad400 (LWP 7077) 0x76247f30 in poll () from /lib/libc.so.6
  2    Thread 0x6f7ff400 (LWP 7076) 0x7625e19c in __lll_lock_wait_private () from /lib/libc.so.6
* 1    Thread 0x701eb400 (LWP 7072) 0x0000b334 in QObject::event(QEvent*) ()
(gdb) thread 2
[Switching to thread 2 (Thread 0x6f7ff400 (LWP 7076))]
#0  0x7625e19c in __lll_lock_wait_private () from /lib/libc.so.6
(gdb) bt
#0  0x7625e19c in __lll_lock_wait_private () from /lib/libc.so.6
#1  0x761f7e94 in malloc () from /lib/libc.so.6
#2  0x7644668e in QHashData::allocateNode(int) () from /usr/lib/libQt5Core.so.5
#3  0x769e5f7c in QNetworkConfigurationManagerPrivate::pollEngines() () from /usr/lib/libQt5Network.so.5
#4  0x76a29c3c in ?? () from /usr/lib/libQt5Network.so.5
#5  0x7655e290 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/libQt5Core.so.5
#6  0x76566076 in QTimer::timerEvent(QTimerEvent*) () from /usr/lib/libQt5Core.so.5
#7  0x7655ec46 in QObject::event(QEvent*) () from /usr/lib/libQt5Core.so.5
#8  0x76542e2a in QCoreApplicationPrivate::notify_helper(QObject*, QEvent*) ()
   from /usr/lib/libQt5Core.so.5
#9  0x76542e5a in QCoreApplication::notify(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#10 0x76542c42 in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
#11 0x7657723e in QTimerInfoList::activateTimers() () from /usr/lib/libQt5Core.so.5
#12 0x7657758e in ?? () from /usr/lib/libQt5Core.so.5
#13 0x76083c30 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#14 0x76083fac in ?? () from /usr/lib/libglib-2.0.so.0
#15 0x76084058 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#16 0x7657778c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt5Core.so.5
#17 0x76541c84 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt5Core.so.5
#18 0x76541f34 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/libQt5Core.so.5
#19 0x7641c0cc in QThread::exec() () from /usr/lib/libQt5Core.so.5
#20 0x7641ebca in ?? () from /usr/lib/libQt5Core.so.5
#21 0x7641ebca in ?? () from /usr/lib/libQt5Core.so.5
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) thread 8
[Switching to thread 8 (Thread 0x745ef000 (LWP 6327))]
#0  0x7625e19c in __lll_lock_wait_private () from /lib/libc.so.6
(gdb) bt
#0  0x7625e19c in __lll_lock_wait_private () from /lib/libc.so.6
#1  0x761f7e94 in malloc () from /lib/libc.so.6
#2  0x7641f236 in QArrayData::allocate(unsigned int, unsigned int, unsigned int, QFlags<QArrayData::AllocationOption>) () from /usr/lib/libQt5Core.so.5
#3  0x764638ce in QString::QString(int, Qt::Initialization) () from /usr/lib/libQt5Core.so.5
#4  0x7657be16 in ?? () from /usr/lib/libQt5Core.so.5
#5  0x7657be16 in ?? () from /usr/lib/libQt5Core.so.5
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)