Comment 1 for bug 1543411

Another core in 2712 kilo is at /cs-shared/bugs/1543411

Backtrace:
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/contrail-vrouter-agent'.
Program terminated with signal SIGABRT, Aborted.
#0 0x00007f2aee186cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
56 ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
Traceback (most recent call last):
  File "/usr/share/gdb/auto-load/usr/lib/x86_64-linux-gnu/libstdc++.so.6.0.19-gdb.py", line 63, in <module>
    from libstdcxx.v6.printers import register_libstdcxx_printers
ImportError: No module named 'libstdcxx'
(gdb) bt
#0 0x00007f2aee186cc9 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
#1 0x00007f2aee18a0d8 in __GI_abort () at abort.c:89
#2 0x00007f2aee17fb86 in __assert_fail_base (fmt=0x7f2aee2d0830 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x11cb6b5 "0",
    file=file@entry=0x11f75a8 "controller/src/vnsw/agent/vrouter/flow_stats/flow_stats_collector.cc", line=line@entry=804,
    function=function@entry=0x11f7760 "bool FlowStatsCollector::RequestHandler(boost::shared_ptr<FlowExportReq>)") at assert.c:92
#3 0x00007f2aee17fc32 in __GI___assert_fail (assertion=0x11cb6b5 "0", file=0x11f75a8 "controller/src/vnsw/agent/vrouter/flow_stats/flow_stats_collector.cc",
    line=804, function=0x11f7760 "bool FlowStatsCollector::RequestHandler(boost::shared_ptr<FlowExportReq>)") at assert.c:101
#4 0x0000000000bb627e in FlowStatsCollector::RequestHandler(boost::shared_ptr<FlowExportReq>) ()
#5 0x0000000000bb7cdc in boost::detail::function::function_obj_invoker1<boost::_bi::bind_t<bool, boost::_mfi::mf1<bool, FlowStatsCollector, boost::shared_ptr<FlowExportReq> >, boost::_bi::list2<boost::_bi::value<FlowStatsCollector*>, boost::arg<1> > >, bool, boost::shared_ptr<FlowExportReq> >::invoke(boost::detail::function::function_buffer&, boost::shared_ptr<FlowExportReq>) ()
#6 0x0000000000bbcd39 in QueueTaskRunner<boost::shared_ptr<FlowExportReq>, WorkQueue<boost::shared_ptr<FlowExportReq> > >::RunQueue() ()
#7 0x00000000011793ec in TaskImpl::execute() ()
#8 0x00007f2aeed55b3a in ?? () from /usr/lib/libtbb.so.2
#9 0x00007f2aeed51816 in ?? () from /usr/lib/libtbb.so.2
#10 0x00007f2aeed50f4b in ?? () from /usr/lib/libtbb.so.2
#11 0x00007f2aeed4d0ff in ?? () from /usr/lib/libtbb.so.2
#12 0x00007f2aeed4d2f9 in ?? () from /usr/lib/libtbb.so.2
#13 0x00007f2aeef71182 in start_thread (arg=0x7f2ae6c0a700) at pthread_create.c:312
#14 0x00007f2aee24a47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
(gdb) :q