Caused due to concurrent deletion of client sandesh session happening in thread 8 Thread 8 (Thread 0x2ab9a7e6a700 (LWP 7503)): #0 0x00002ab9a4c891a7 in vfprintf () from /lib64/libc.so.6 #1 0x00002ab9a4cafaab in vsprintf () from /lib64/libc.so.6 #2 0x00002ab9a4c939f7 in sprintf () from /lib64/libc.so.6 #3 0x00002ab9a4d48a4f in inet_ntop () from /lib64/libc.so.6 #4 0x00000000016af6dc in boost::asio::detail::socket_ops::inet_ntop(int, void const*, char*, unsigned long, unsigned long, boost::system::error_code&) () #5 0x00000000016af8eb in boost::asio::ip::address_v4::to_string(boost::system::error_code&) const () #6 0x0000000001c1c3b5 in boost::asio::ip::address::to_string(boost::system::error_code&) const () #7 0x00000000021097e9 in boost::asio::ip::detail::endpoint::to_string(boost::system::error_code&) const () #8 0x0000000002118b14 in std::basic_ostream >& boost::asio::ip::operator<< , boost::asio::ip::tcp>(std::basic_ostream >&, boost::asio::ip::basic_endpoint const&) () #9 0x00000000024ca858 in SandeshClient::SendUVE(int, std::string const&, std::string const&, boost::asio::ip::basic_endpoint const&, std::vector, std::allocator > > const&) () #10 0x00000000024d8fe9 in SandeshClientSMImpl::SendUVE() () #11 0x00000000024d9806 in scm::Idle::Idle(boost::statechart::state, (boost::statechart::history_mode)0>::my_context) () #12 0x00000000024e5e1b in boost::statechart::state, (boost::statechart::history_mode)0>::shallow_construct(boost::statechart::state_machine, boost::statechart::null_exception_translator>* const&, boost::statechart::state_machine, boost::statechart::null_exception_translator>&) () #13 0x00000000024e497c in boost::statechart::state, (boost::statechart::history_mode)0>::deep_construct(boost::statechart::state_machine, boost::statechart::null_exception_translator>* const&, boost::statechart::state_machine, boost::statechart::null_exception_translator>&) () #14 0x00000000024e2d31 in boost::statechart::detail::inner_constructor, scm::Idle, boost::mpl::l_end>, boost::statechart::state_machine, boost::statechart::null_exception_translator> >::construct(boost::statechart::state_machine, boost::statechart::null_exception_translator>* const&, boost::statechart::state_machine, boost::statechart::null_exception_translator>&) () #15 0x00000000024e0aa8 in boost::statechart::detail::safe_reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::transit_impl(boost::statechart::detail::no_transition_function const&) () #16 0x00000000024dd8e1 in boost::statechart::detail::safe_reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::transit() () #17 0x00000000024dab85 in scm::Connect::ToIdle(SandeshClientSMImpl*, char const*) () #18 0x00000000024da2a8 in scm::Connect::react(scm::EvTcpConnectFail const&) () #19 0x00000000024eeca4 in boost::statechart::detail::reaction_result boost::statechart::custom_reaction::react(scm::Connect&, boost::statechart::event_base const&, void const* const&) () #20 0x00000000024ee727 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react_impl_non_empty::local_react_impl, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))> >, boost::statechart::simple_state, (boost::statechart::history_mode)0> >(boost::statechart::simple_state, (boost::statechart::history_mode)0>&, boost::statechart::event_base const&, void const*) () #21 0x00000000024ee33b in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))> > >(boost::statechart::event_base const&, void const*) () #22 0x00000000024edec5 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react_impl_non_empty::local_react_impl, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))> >, boost::statechart::simple_state, (boost::statechart::history_mode)0> >(boost::statechart::simple_state, (boost::statechart::history_mode)0>&, boost::statechart::event_base const&, void const*) () #23 0x00000000024eda89 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction to continue, or q to quit--- pl, &(void SandeshClientSMImpl::ReleaseSandesh(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))> > >(boost::statechart::event_base const&, void const*) () #24 0x00000000024ed525 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react_impl_non_empty::local_react_impl, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))> >, boost::statechart::simple_state, (boost::statechart::history_mode)0> >(boost::statechart::simple_state, (boost::statechart::history_mode)0>&, boost::statechart::event_base const&, void const*) () #25 0x00000000024ece09 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))> > >(boost::statechart::event_base const&, void const*) () #26 0x00000000024ec3f0 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react_impl_non_empty::local_react_impl(scm::EvStop const&))>, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na>, boost::statechart::simple_state, (boost::statechart::history_mode)0> >(boost::statechart::simple_state, (boost::statechart::history_mode)0>&, boost::statechart::event_base const&, void const*) () #27 0x00000000024eb693 in boost::statechart::detail::reaction_result boost::statechart::simple_state, (boost::statechart::history_mode)0>::local_react(scm::EvStop const&))>, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::custom_reaction, boost::statechart::in_state_reaction(scm::EvSandeshSend const&))>, boost::statechart::in_state_reaction(scm::EvTcpDeleteSession const&))>, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na, mpl_::na> >(boost::statechart::event_base const&, void const*) () #28 0x00000000024ea259 in boost::statechart::simple_state, (boost::statechart::history_mode)0>::react_impl(boost::statechart::event_base const&, void const*) () #29 0x0000000001a31deb in boost::statechart::detail::send_function, boost::statechart::detail::rtti_policy>, boost::statechart::event_base, void const*>::operator()() () #30 0x00000000024e3630 in boost::statechart::detail::safe_reaction_result boost::statechart::null_exception_translator::operator(), boost::statechart::detail::rtti_policy>, boost::statechart::event_base, void const*>, boost::statechart::state_machine, boost::statechart::null_exception_translator>::exception_event_handler>(boost::statechart::detail::send_function, boost::statechart::detail::rtti_policy>, boost::statechart::event_base, void const*>, boost::statechart::state_machine, boost::statechart::null_exception_translator>::exception_event_handler) () #31 0x00000000024e1888 in boost::statechart::state_machine, boost::statechart::null_exception_translator>::send_event(boost::statechart::event_base const&) () #32 0x00000000024dea81 in boost::statechart::state_machine, boost::statechart::null_exception_translator>::process_event(boost::statechart::event_base const&) () #33 0x00000000024d66d8 in SandeshClientSMImpl::DequeueEvent(SandeshClientSMImpl::EventContainer) () #34 0x00000000024e935a in boost::_mfi::mf1::operator()(SandeshClientSMImpl*, SandeshClientSMImpl::EventContainer) const () #35 0x00000000024e7a22 in bool boost::_bi::list2, boost::arg<1> >::operator(), boost::_bi::list1 >(boost::_bi::type, boost::_mfi::mf1&, boost::_bi::list1&, long) () #36 0x00000000024e6430 in bool boost::_bi::bind_t, boost::_bi::list2, boost::arg<1> > >::operator()(SandeshClientSMImpl::EventContainer&) () #37 0x00000000024e5175 in boost::detail::function::function_obj_invoker1, boost::_bi::list2, boost::arg<1> > >, bool, SandeshClientSMImpl::EventContainer>::invoke(boost::detail::function::function_buffer&, SandeshClientSMImpl::EventContainer) () #38 0x00000000024ec10d in boost::function1::operator()(SandeshClientSMImpl::EventContainer) const () #39 0x00000000024eb200 in QueueTaskRunner >::RunQueue() () #40 0x00000000024ea066 in QueueTaskRunner >::Run() () #41 0x00000000025d5e1e in TaskImpl::execute() () #42 0x00002ab9a41fe440 in tbb::internal::custom_scheduler::local_wait_for_all (this=0x2ab9c0000900, parent=..., child=0x393ffc0) at /home/contrail-builder/workspace/Nightly-RedHat70-Build/sandbox/third_party/tbb40_20111130oss/src/tbb/custom_scheduler.h:449 #43 0x00002ab9a41f52e4 in tbb::internal::arena::process (this=0x391fc80, s=...) at /home/contrail-builder/workspace/Nightly-RedHat70-Build/sandbox/third_party/tbb40_20111130oss/src/tbb/arena.cpp:99 #44 0x00002ab9a41f3c24 in tbb::internal::market::process (this=0x3922080, j=...) at /home/contrail-builder/workspace/Nightly-RedHat70-Build/sandbox/third_party/tbb40_20111130oss/src/tbb/market.cpp:393 #45 0x00002ab9a41ee9c2 in tbb::internal::rml::private_worker::run (this=0x391f500) at /home/contrail-builder/workspace/Nightly-RedHat70-Build/sandbox/third_party/tbb40_20111130oss/src/tbb/private_server.cpp:263 #46 0x00002ab9a41ee864 in tbb::internal::rml::private_worker::thread_routine (arg=0x391f500) at /home/contrail-builder/workspace/Nightly-RedHat70-Build/sandbox/third_party/tbb40_20111130oss/src/tbb/private_server.cpp:231 #47 0x00002ab9a3fb9e25 in start_thread () from /lib64/libpthread.so.0 #48 0x00002ab9a4d3a34d in clone () from /lib64/libc.so.6