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  1. MariaDB Server
  2. MDEV-17344

[Draft] Server crashes in Prepared_statement::~Prepared_statement / Query_arena::free_items / delete_self

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    Details

    • Type: Bug
    • Status: Open (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.2
    • Fix Version/s: None
    • Component/s: Prepared Statements
    • Labels:
      None

      Description

      10.2 non-debug 61a6f4bd962

      #2  <signal handler called>
      #3  0x0000000000000000 in ?? ()
      #4  0x0000556c1e62e259 in delete_self (this=<optimized out>) at /data/src/10.2/sql/item.h:1848
      #5  Query_arena::free_items (this=this@entry=0x7f116c650570) at /data/src/10.2/sql/sql_class.cc:3462
      #6  0x0000556c1e671a6a in Prepared_statement::~Prepared_statement (this=0x7f116c650558, __in_chrg=<optimized out>) at /data/src/10.2/sql/sql_prepare.cc:3827
      #7  0x0000556c1e671af9 in Prepared_statement::~Prepared_statement (this=0x7f116c650558, __in_chrg=<optimized out>) at /data/src/10.2/sql/sql_prepare.cc:3836
      #8  0x0000556c1ecc2e35 in my_hash_delete (hash=0x7f116c002298, record=0x7f116c650558 "\220\301B\037lU") at /data/src/10.2/mysys/hash.c:626
      #9  0x0000556c1e62e6b3 in Statement_map::erase (this=0x7f116c002298, statement=0x7f116c650558) at /data/src/10.2/sql/sql_class.cc:3718
      #10 0x0000556c1e675840 in Prepared_statement::deallocate (this=<optimized out>) at /data/src/10.2/sql/sql_prepare.cc:4936
      #11 0x0000556c1e675872 in mysqld_stmt_close (thd=thd@entry=0x7f116c0009a8, packet=packet@entry=0x7f116c006d29 "V+") at /data/src/10.2/sql/sql_prepare.cc:3470
      #12 0x0000556c1e667270 in dispatch_command (command=command@entry=COM_STMT_CLOSE, thd=thd@entry=0x7f116c0009a8, packet=packet@entry=0x7f116c006d29 "V+", packet_length=packet_length@entry=4, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /data/src/10.2/sql/sql_parse.cc:1786
      #13 0x0000556c1e668178 in do_command (thd=0x7f116c0009a8) at /data/src/10.2/sql/sql_parse.cc:1378
      #14 0x0000556c1e7309f4 in do_handle_one_connection (connect=connect@entry=0x556c21f35198) at /data/src/10.2/sql/sql_connect.cc:1335
      #15 0x0000556c1e730b94 in handle_one_connection (arg=0x556c21f35198) at /data/src/10.2/sql/sql_connect.cc:1241
      #16 0x00007f11d9eb0494 in start_thread (arg=0x7f11d449a700) at pthread_create.c:333
      #17 0x00007f11d829693f in clone () from /lib/x86_64-linux-gnu/libc.so.6
      

      github.com/MariaDB/rangen --branch elenst-mdev17344

      perl ./runall-trials.pl --trials=15 --basedir=/data/bld/10.2-rel  --duration=350 --threads=3 --seed=1537604147 --reporters=Backtrace,ErrorLog,Deadlock  --views --redefine=conf/mariadb/alter_table.yy --redefine=conf/mariadb/sp.yy --redefine=conf/mariadb/bulk_insert.yy --mysqld=--log_output=FILE --mysqld=--max-statement-time=30 --mysqld=--lock-wait-timeout=10 --mysqld=--loose-innodb-lock-wait-timeout=5 --mysqld=--loose-debug_assert_on_not_freed_memory=0 --mysqld=--default-storage-engine=MyISAM --grammar=conf/engines/engine_stress.yy --gendata=conf/engines/engine_stress.zz --ps-protocol  --vardir=/data/logs/mdev17177-30
      

      This command line is the best I can do at the moment. All further attempts to simplify the scenario get stuck at MDEV-17055. Even the test above hits MDEV-17055 half of the time. I don't know if the problems are related or just happen independently in similar circumstances.

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              • Assignee:
                elenst Elena Stepanova
                Reporter:
                elenst Elena Stepanova
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                Dates

                • Created:
                  Updated: