asio crash on socket disconnect

[joequant]

I've started to get crashes when ethminer connects and disconnects to the stratum server.
The segfault occurs in asio, and appears to be due to changes in EthStratumClient.cpp starting after commit 76943 on 27 Feb.

Will try to get more information.

[joequant]

Here is the stack trace

#0 boost::asio::detail::scheduler::post_immediate_completion (this=0x34,
op=0x7fffc435e930, is_continuation=false)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/detail/impl/scheduler.ipp:282
#1 0x00000000004e4591 in boost::asio::detail::epoll_reactor::start_op (
this=0x7fff743007a0, op_type=op_type@entry=1,
descriptor=descriptor@entry=-536806608,
descriptor_data=@0x7fffbc120fe0: 0x7fffdc003100,
op=op@entry=0x7fffc435e930, is_continuation=is_continuation@entry=false,
allow_speculative=true)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/detail/impl/epoll_reactor.ipp:301
#2 0x00000000004e519b in boost::asio::detail::reactive_socket_service_base::start_op (this=0x7fff742d7408, impl=..., op_type=1, op=0x7fffc435e930,
is_continuation=, is_non_blocking=,
noop=false)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/detail/impl/reactive_socket_service_base.ipp:246
#3 0x00000000004ecd32 in boost::asio::detail::reactive_socket_service_base::async_send<boost::asio::const_buffers_1, boost::asio::detail::write_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::const_buffers_1, boost::asio::const_buffer const*, boost::asio::detail::transfer_all_t, boost::asio::detail::write_dynbuf_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient*>, boost::arg<1> ()()> > > > > (handler=..., flags=0, buffers=...,
impl=..., this=0x7fff742d7408)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/detail/reactive_socket_service_base.hpp:278
#4 boost::asio::basic_stream_socketboost::asio::ip::tcp::async_write_some<boost::asio::const_buffers_1, boost::asio::detail::write_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::const_buffers_1, boost::asio::const_buffer const, boost::asio::detail::transfer_all_t, boost::asio::detail::write_dynbuf_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient*>, boost::arg<1> ()()> > > > > (handler=..., buffers=..., this=0x7fffbc120fd0)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/basic_stream_socket.hpp:787
#5 boost::asio::detail::write_op<boost::asio::basic_stream_socketboost::asio:ip::tcp, boost::asio::const_buffers_1, boost::asio::const_buffer const, boost::asio::detail::transfer_all_t, boost::asio::detail::write_dynbuf_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient*>, boost::arg<1> ()()> > > >::operator() (this=this@entry=0x7fffe9843940, ec=...,
bytes_transferred=bytes_transferred@entry=0, start=start@entry=1)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:259
#6 0x00000000004ecebb in boost::asio::detail::start_write_buffer_sequence_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::const_buffers_1, boost::asio::const_buffer const, boost::asio::detail::transfer_all_t, boost::asio::detail::write_dynbuf_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient*>, boost::arg<1> ()()> > > > (handler=..., buffers=...,
stream=..., completion_condition=...)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:345
#7 boost::asio::async_write<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::const_buffers_1, boost::asio::detail::transfer_all_t, boost::asio::detail::write_dynbuf_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient>, boost::arg<1> ()()> > > > (handler=..., buffers=..., s=...,
completion_condition=...)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:411
#8 boost::asio::detail::write_dynbuf_op<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient>, boost::arg<1> ()()> > >::operator() (start=1,
bytes_transferred=0, ec=..., this=)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:487
#9 boost::asio::async_write<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::asio::detail::transfer_all_t, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient>, boost::arg<1> ()()> > > (s=..., buffers=..., handler=...,
completion_condition=...)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:635
#10 0x00000000004f1ddf in boost::asio::async_write<boost::asio::basic_stream_socketboost::asio::ip::tcp, boost::asio::basic_streambuf_ref<std::allocator >, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient>, boost::arg<1> ()()> > > (handler=..., buffers=..., s=...)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:606
#11 boost::asio::async_write<boost::asio::basic_stream_socketboost::asio::ip::tcp, std::allocator, boost::_bi::bind_t<void, boost::_mfi::mf1<void, EthStratumClient, boost::system::error_code const&>, boost::_bi::list2<boost::_bi::value<EthStratumClient>, boost::arg<1> ()()> > > (handler=..., b=..., s=...)
at /home/joe/.hunter/_Base/59b2b88/8f55c83/c20b399/Install/include/boost/asio/impl/write.hpp:651
#12 EthStratumClient::submitSolution (this=0xa54170, solution=...)
at /home/joe/bench/git/ethminer/libpoolprotocols/stratum/EthStratumClient.cpp:667
#13 0x00000000004d1bd3 in dev::eth::PoolManager::<lambda(dev::eth::Solution)>::operator()(dev::eth::Solution) const (__closure=0x7fffffffcc90, sol=...)
at /home/joe/bench/git/ethminer/libpoolprotocols/PoolManager.cpp:93
#14 0x00000000004d1e96 in std::_Function_handler<void(const dev::eth::Solution&), dev::eth::PoolManager::PoolManager(dev::eth::PoolClient, dev::eth::Farm&, const dev::eth::MinerType&)::<lambda(dev::eth::Solution)> >::_M_invoke(const std::_Any_data &, const dev::eth::Solution &) (__functor=..., __args#0=...)
at /usr/include/c++/7.3.0/bits/std_function.h:316
#15 0x000000000051a226 in dev::eth::CLMiner::workLoop (this=0x7fffdc0080d0)
at /home/joe/bench/git/ethminer/libethash-cl/CLMiner.cpp:366
#16 0x0000000000509fa9 in dev::Worker::<lambda()>::operator()(void) const (
__closure=0x7fffdc008708)
#17 0x00007ffff76f0def in execute_native_thread_routine ()
from /lib64/libstdc++.so.6
#18 0x00007ffff79be62e in start_thread () from /lib64/libpthread.so.0
#19 0x00007ffff6e0fdef in clone () from /lib64/libc.so.6

[AndreaLanfranchi]

Please report on latest.
Thank you.

[AndreaLanfranchi]

Being addressed in #1135