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  1. MariaDB Server
  2. MDEV-23468

inline_mysql_socket_send: Assertion `mysql_socket.fd != -1' failed on shutdown

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      Seen with some regularity in [recent or 10.4] test runs;

      10.4.15 eae968f62d285de97ed607c87bc131cd863d5d03 (Debug)

      ... innodb monitor output ...
      2020-08-11 21:48:20 0 [Note] /test/MD110820-mariadb-10.4.15-linux-x86_64-dbg/bin/mysqld (initiated by: root[root] @ localhost []): Normal shutdown
      2020-08-11 21:48:20 0 [Note] WSREP: Shutdown replication
      2020-08-11 21:48:20 0 [Note] WSREP: killing local connection: 12
      mysqld: /test/10.4_dbg/include/mysql/psi/mysql_socket.h:744: inline_mysql_socket_send: Assertion `mysql_socket.fd != -1' failed.
      200811 21:48:20 [ERROR] mysqld got signal 6 ;  
      

      jplindst any idea what happens here?

      Very hard to reproduce. Seems WSREP kills a connection and server does subsequently assert. I am attaching full details (full trial, core dump, data dir, logs). Core can be debugged as follows:

      mv mysqld ..   # mysqld bin copy + libs directory
      ./gdb 
      

      Or

      gdb ./mysqld/mysqld ./data/core
      

      Error log in log/master.err, used sql in default.node.tld_thread-0.sql (55k lines, not reducible as bug will not reproduce likely due to some 'required state' or 'timing' or 'os slicing' issue.

      Attachments

        1. mysqld.2.err
          675 kB
        2. mysqld.1.err
          210 kB
        3. galera_sr_cc_master.log
          0.7 kB

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              jplindst Jan Lindström (Inactive)
              Roel Roel Van de Paar
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