Two errors: 1) Exception: boost::wrapexcept<boost::bad_weak_ptr> ; 2) Exception: std::system_error And

[younicoin]

Hello! There are errors in work of nervad. Boost is generating so much errors every time

grep 2023-12-22 nerva.log | grep 'boost::wrapexceptboost::bad_weak_ptr' | wc -l
3201

And here it is one a block of boost exception messages:

  2023-12-23 21:05:40.781 INFO    Exception: boost::wrapexcept<boost::bad_weak_ptr>
  2023-12-23 21:05:40.782 INFO    Unwound call stack:
  2023-12-23 21:05:40.782 INFO        [1]  0xaf) [0x55cae942b40e]:__cxa_throw+0xaf) [0x55cae942b40e]
  2023-12-23 21:05:40.782 INFO        [2] /nerva/builder/output/linux/release/bin/nervad(+0x702b5) [0x55cae94072b5]
  2023-12-23 21:05:40.782 INFO        [3] /nerva/builder/output/linux/release/bin/nervad(+0x3c9bb2) [0x55cae9760bb2]
  2023-12-23 21:05:40.782 INFO        [4] /nerva/builder/output/linux/release/bin/nervad(+0x3de568) [0x55cae9775568]
  2023-12-23 21:05:40.782 INFO        [5] /nerva/builder/output/linux/release/bin/nervad(+0x38eb49) [0x55cae9725b49]
  2023-12-23 21:05:40.782 INFO        [6] /nerva/builder/output/linux/release/bin/nervad(+0x4381e6) [0x55cae97cf1e6]
  2023-12-23 21:05:40.782 INFO        [7] /nerva/builder/output/linux/release/bin/nervad(+0x4387b8) [0x55cae97cf7b8]
  2023-12-23 21:05:40.782 INFO        [8] /nerva/builder/output/linux/release/bin/nervad(+0x43e5de) [0x55cae97d55de]
  2023-12-23 21:05:40.782 INFO        [9] /nerva/builder/output/linux/release/bin/nervad(+0x39e547) [0x55cae9735547]
  2023-12-23 21:05:40.782 INFO        [10] /nerva/builder/output/linux/release/bin/nervad(+0x3df65b) [0x55cae977665b]
  2023-12-23 21:05:40.782 INFO        [11] /nerva/builder/output/linux/release/bin/nervad(+0x3df3ec) [0x55cae97763ec]
  2023-12-23 21:05:40.782 INFO        [12] /nerva/builder/output/linux/release/bin/nervad(+0x3860a4) [0x55cae971d0a4]
  2023-12-23 21:05:40.782 INFO        [13] /nerva/builder/output/linux/release/bin/nervad(+0x3c4bd2) [0x55cae975bbd2]
  2023-12-23 21:05:40.782 INFO        [14]  0xbb17) [0x7fb232ba3b17]:_64-linux-gnu/libboost_thread.so.1.74.0(+0xbb17) [0x7fb232ba3b17]
  2023-12-23 21:05:40.782 INFO        [15]  0x89044) [0x7fb2326a8044]:_64-linux-gnu/libc.so.6(+0x89044) [0x7fb2326a8044]
  2023-12-23 21:05:40.782 INFO        [16]  0x10961c) [0x7fb23272861c]:_64-linux-gnu/libc.so.6(+0x10961c) [0x7fb23272861c]

And also when I stop daemon I get next error

  2023-12-23 21:06:00.534 INFO    Exception: std::system_error
  2023-12-23 21:06:00.534 INFO    Unwound call stack:
  2023-12-23 21:06:00.535 INFO        [1]  0xaf) [0x55cae942b40e]:__cxa_throw+0xaf) [0x55cae942b40e]
  2023-12-23 21:06:00.535 INFO        [2] /nerva/builder/output/linux/release/bin/nervad(+0xce266) [0x55cae9465266]
  2023-12-23 21:06:00.535 INFO        [3] /nerva/builder/output/linux/release/bin/nervad(+0x56da09) [0x55cae9904a09]
  2023-12-23 21:06:00.535 INFO        [4]  0xbb17) [0x7fb232ba3b17]:_64-linux-gnu/libboost_thread.so.1.74.0(+0xbb17) [0x7fb232ba3b17]
  2023-12-23 21:06:00.535 INFO        [5]  0x89044) [0x7fb2326a8044]:_64-linux-gnu/libc.so.6(+0x89044) [0x7fb2326a8044]
  2023-12-23 21:06:00.535 INFO        [6]  0x10961c) [0x7fb23272861c]:_64-linux-gnu/libc.so.6(+0x10961c) [0x7fb23272861c]
  2023-12-23 21:06:00.535 INFO
  2023-12-23 21:06:00.611 INFO    Stop signal sent
  2023-12-23 21:06:39.378 INFO    New log categories: *:ERROR,net:FATAL,net.http:FATAL,net.p2p:FATAL,net.cn:FATAL,user:INFO,verify:FATAL,stacktrace:INFO,logging:INFO,msgwriter:INFO
  2023-12-23 21:06:39.378 INFO    New log categories: *:ERROR,net:FATAL,net.http:FATAL,net.p2p:FATAL,net.cn:FATAL,user:INFO,verify:FATAL,stacktrace:INFO,logging:INFO,msgwriter:INFO

[younicoin]

what for bad_weak_ptr, monero still has same issues, and people discussed this:

##monero-project/monero#6473
##monero-project/monero#8132
##monero-project/monero#8341
##monero-project/monero#9068

Pull 7345 in monero solved this, but still is not confirmed:
monero-project/monero#7345

People say, bad_weak_ptr exceptions appears when some node closed connection, but boost still points to that connection. And I see this in log level 4, so Exceptions appears when connection was closed

  2023-12-23 22:32:19.178 TRACE   BlockchainLMDB::block_rtxn_start
  2023-12-23 22:32:19.178 TRACE   mdb_txn_safe: destructor
  2023-12-23 22:32:19.178 TRACE   Closed connection from host 81.183.94.172: 1
  2023-12-23 22:32:19.178 TRACE   [81.183.94.172:17565 OUT] [levin_protocol] -->> start_outer_call
  2023-12-23 22:32:19.178 TRACE   [81.183.94.172:17565 OUT] [levin_protocol] <<-- finish_outer_call
  2023-12-23 22:32:19.178 TRACE   [81.183.94.172:17565 OUT] [sock 29] release
  2023-12-23 22:32:19.178 ERROR   [81.183.94.172:17565 OUT] [levin_protocol] -->> start_outer_call failed
  2023-12-23 22:32:19.178 INFO    Failed to invoke command 1001 return code -3
  2023-12-23 22:32:19.178 WARNING [81.183.94.172:17565 OUT] COMMAND_HANDSHAKE Failed
  2023-12-23 22:32:19.178 TRACE   [sock 29] Socket destroyed
  2023-12-23 22:32:19.178 INFO    Exception: boost::wrapexcept<boost::bad_weak_ptr>
  2023-12-23 22:32:19.178 INFO    Unwound call stack:
  2023-12-23 22:32:19.178 INFO        [1]  0xaf) [0x5647df6a540e]:__cxa_throw+0xaf) [0x5647df6a540e]
  2023-12-23 22:32:19.178 INFO        [2] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x702b5) [0x5647df6812b5]
  2023-12-23 22:32:19.178 INFO        [3] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x3c9bb2) [0x5647df9dabb2]
  2023-12-23 22:32:19.178 INFO        [4] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x3de568) [0x5647df9ef568]
  2023-12-23 22:32:19.178 INFO        [5] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x38eb49) [0x5647df99fb49]
  2023-12-23 22:32:19.178 INFO        [6] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x4381e6) [0x5647dfa491e6]
  2023-12-23 22:32:19.178 INFO        [7] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x4387b8) [0x5647dfa497b8]
  2023-12-23 22:32:19.178 INFO        [8] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x43bfe7) [0x5647dfa4cfe7]
  2023-12-23 22:32:19.178 INFO        [9] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x43dd89) [0x5647dfa4ed89]
  2023-12-23 22:32:19.178 INFO        [10] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x43ebb8) [0x5647dfa4fbb8]
  2023-12-23 22:32:19.178 INFO        [11] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x39e547) [0x5647df9af547]
  2023-12-23 22:32:19.178 INFO        [12] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x3df65b) [0x5647df9f065b]
  2023-12-23 22:32:19.178 INFO        [13] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x3df3ec) [0x5647df9f03ec]
  2023-12-23 22:32:19.178 INFO        [14] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x3860a4) [0x5647df9970a4]
  2023-12-23 22:32:19.178 INFO        [15] /xnv/nerva/builder/output/linux/release/bin/nervad(+0x3c4bd2) [0x5647df9d5bd2]
  2023-12-23 22:32:19.178 INFO        [16]  0xbb17) [0x7f0e4e3bbb17]:_64-linux-gnu/libboost_thread.so.1.74.0(+0xbb17) [0x7f0e4e3bbb17]
  2023-12-23 22:32:19.178 INFO        [17]  0x89044) [0x7f0e4dca8044]:_64-linux-gnu/libc.so.6(+0x89044) [0x7f0e4dca8044]
  2023-12-23 22:32:19.178 INFO        [18]  0x10961c) [0x7f0e4dd2861c]:_64-linux-gnu/libc.so.6(+0x10961c) [0x7f0e4dd2861c]
  2023-12-23 22:32:19.178 INFO
  2023-12-23 22:32:19.178 INFO    [81.183.94.172:17565 OUT] Failed to HANDSHAKE with peer 81.183.94.172:17565
  2023-12-23 22:32:19.178 DEBUG   Handshake failed
  2023-12-23 22:32:19.178 TRACE   Blockchain::get_current_blockchain_height

How to close connection without boost pointer problems? I still dig, and that commit in monero pull request 7345 not fit for Nerva, because Nerva has another version of epee

[sn1f3rt]

monero-project/monero#8702 (comment)

Looking into it.