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  1. MariaDB Server
  2. MDEV-15588

Galera node crashes in in Item::delete_self upon EXECUTE IMMEDIATE

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      Notes:

      • couldn't reproduce without wsrep enabled.
      • the test case only applicable to 10.2+ because it uses EXECUTE IMMEDIATE. I couldn't convert it to traditional PS in order to check different versions (the crash disappears upon converting).
      • the test case is non-deterministic, although it fails pretty much every time for me. If it doesn't fail for you, run with --repeat.
      • i run it in shm to avoid WSREP has not yet prepared node for application use.

      # Run with
      # --mysqld=--wsrep-provider=<galera library location>  --mysqld=--wsrep_cluster_address=gcomm:// --mysqld=--innodb_autoinc_lock_mode=2 --mysqld=--innodb_flush_log_at_trx_commit=0 --mysqld=--innodb_locks_unsafe_for_binlog=1 --mysqld=--wsrep-on --mem
       
      --source include/have_innodb.inc
      --source include/have_binlog_format_row.inc
       
      CREATE TABLE t1 (a TEXT) ENGINE=InnoDB;
      INSERT INTO t1 VALUES (NULL),(NULL);
      CREATE TABLE t2 (b TEXT) ENGINE=InnoDB;
      --connect(con1,localhost,root,,)
      --send
      ALTER TABLE t1 FORCE;
      --connection default
      EXECUTE IMMEDIATE 'INSERT INTO t2 SELECT * FROM t1';
       
      # Cleanup
      --connection con1
      --reap
      --disconnect con1
      --connection default
      DROP TABLE t1, t2;
      

      10.2 27c54b77c1aad3a

      #3  <signal handler called>
      #4  0x000055ed4eba8e77 in Item::delete_self (this=0x7f137c012e18) at /data/src/10.2/sql/item.h:1834
      #5  0x000055ed4eb9fe96 in Query_arena::free_items (this=0x7f137c000b18) at /data/src/10.2/sql/sql_class.cc:3559
      #6  0x000055ed4eb9b363 in THD::cleanup_after_query (this=0x7f137c000b00) at /data/src/10.2/sql/sql_class.cc:2178
      #7  0x000055ed4ebf182a in mysql_parse (thd=0x7f137c000b00, rawbuf=0x7f137c0125f8 '\217' <repeats 200 times>..., length=51, parser_state=0x7f13e43a0200, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:7923
      #8  0x000055ed4ebf0e08 in wsrep_mysql_parse (thd=0x7f137c000b00, rawbuf=0x7f137c0125f8 '\217' <repeats 200 times>..., length=51, parser_state=0x7f13e43a0200, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:7715
      #9  0x000055ed4ebdf59e in dispatch_command (command=COM_QUERY, thd=0x7f137c000b00, packet=0x7f137c08cb41 "EXECUTE IMMEDIATE 'INSERT INTO t2 SELECT * FROM t1'", packet_length=51, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1803
      #10 0x000055ed4ebddf58 in do_command (thd=0x7f137c000b00) at /data/src/10.2/sql/sql_parse.cc:1360
      #11 0x000055ed4ed2c77c in do_handle_one_connection (connect=0x55ed530444c0) at /data/src/10.2/sql/sql_connect.cc:1335
      #12 0x000055ed4ed2c509 in handle_one_connection (arg=0x55ed530444c0) at /data/src/10.2/sql/sql_connect.cc:1241
      #13 0x000055ed4f14c412 in pfs_spawn_thread (arg=0x55ed52fa9fb0) at /data/src/10.2/storage/perfschema/pfs.cc:1862
      #14 0x00007f13fd4d7494 in start_thread (arg=0x7f13e43a1700) at pthread_create.c:333
      #15 0x00007f13fb8bd93f in clone () from /lib/x86_64-linux-gnu/libc.so.6
      

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              • Assignee:
                sciascid Daniele Sciascia
                Reporter:
                elenst Elena Stepanova
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                • Created:
                  Updated: