agent: SegFault at InstanceTaskExecvp::ReadData

[Senthilnathan Murugappan]

observed the below crash while executing a bunch of data path encryption tests and believe the test was disabling the encryption or so during the crash.
The core file is at /cs-shared/bugs/1785708/ of svl server

Version: ocata-5.0-172
docker ps | grep vrouter_vrouter-agent_1
3590d4e8b83e ci-repo.englab.juniper.net:5000/contrail-vrouter-agent:ocata-5.0-172 "/entrypoint.sh /u..." 3 days ago Up 35 hours vrouter_vrouter-agent_1

(gdb) bt
#0 0x0000000000d45868 in InstanceTaskExecvp::ReadData(boost::system::error_code const&, unsigned long) ()
#1 0x0000000000d46712 in boost::asio::detail::descriptor_read_op<boost::asio::mutable_buffers_1, boost::_bi::bind_t<void, boost::_mfi::mf2<void, InstanceTaskExecvp, boost::system::error_code const&, unsigned long>, boost::_bi::list3<boost::_bi::value<InstanceTaskExecvp*>, boost::arg<1> (*)(), boost::arg<2> (*)()> > >::do_complete(boost::asio::detail::task_io_service*, boost::asio::detail::task_io_service_operation*, boost::system::error_code const&, unsigned long) ()
#2 0x0000000000c37167 in boost::asio::detail::task_io_service::run(boost::system::error_code&) ()
#3 0x0000000000efc461 in EventManager::Run() ()
#4 0x0000000000921b73 in main ()