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  1. MariaDB Server
  2. MDEV-25586

SIGSEGV in my_strcasecmp_utf8mb3

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      Description

      DROP DATABASE test;
      SET GLOBAL wsrep_ignore_apply_errors=0;
      CREATE USER dummy_user@localhost IDENTIFIED WITH dummy_plugin;
      WITH t AS (SELECT * FROM t0 WHERE b=0) SELECT * FROM t0;
      

      Leads to:

      10.6.0 8751aa7397b2e698fa0b46ec3e60abb9e2fd7e1b (Optimized)

      Core was generated by `/test/GAL_MD200421-mariadb-10.6.0-linux-x86_64-opt/bin/mysqld --defaults-file=/'.
      Program terminated with signal SIGSEGV, Segmentation fault.
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11)
          at ../sysdeps/unix/sysv/linux/pthread_kill.c:56
      [Current thread is 1 (Thread 0x1554e405a700 (LWP 167011))]
      (gdb) bt
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56
      #1  0x000055ee7510c68f in my_write_core (sig=sig@entry=11) at /test/10.6_opt/mysys/stacktrace.c:424
      #2  0x000055ee74b8b190 in handle_fatal_signal (sig=11) at /test/10.6_opt/sql/signal_handler.cc:343
      #3  <signal handler called>
      #4  my_strcasecmp_utf8mb3 (cs=<optimized out>, s=0x0, t=0x55ee75266719 "mysql") at /test/10.6_opt/strings/ctype-utf8.c:5109
      #5  0x000055ee74a4aa6a in get_table_category (db=db@entry=0x1554e4058f70, name=name@entry=0x1554e4059060) at /test/10.6_opt/sql/table.cc:283
      #6  0x000055ee74984e8a in wsrep_tables_accessible_when_detached (tables=<optimized out>) at /test/10.6_opt/sql/sql_parse.cc:1140
      #7  mysql_execute_command (thd=0x1554700103d8) at /test/10.6_opt/sql/sql_parse.cc:3688
      #8  0x000055ee74975c45 in mysql_parse (thd=0x1554700103d8, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /test/10.6_opt/sql/sql_parse.cc:8017
      #9  0x000055ee74975696 in wsrep_mysql_parse (thd=0x1554700103d8, rawbuf=0x155470008960 "WITH t AS (SELECT * FROM t0 WHERE b=0) SELECT * FROM t0", length=55, parser_state=0x1554e4059440) at /test/10.6_opt/sql/sql_parse.cc:7831
      #10 0x000055ee74983139 in dispatch_command (command=COM_QUERY, thd=0x1554700103d8, packet=0x1554700008e9 "WITH t AS (SELECT * FROM t0 WHERE b=0) SELECT * FROM t0", packet_length=<optimized out>, blocking=<optimized out>) at /test/10.6_opt/sql/sql_class.h:1331
      #11 0x000055ee74983c58 in do_command (thd=0x1554700103d8, blocking=blocking@entry=true) at /test/10.6_opt/sql/sql_parse.cc:1406
      #12 0x000055ee74a86517 in do_handle_one_connection (connect=<optimized out>, put_in_cache=true) at /test/10.6_opt/sql/sql_connect.cc:1410
      #13 0x000055ee74a8687d in handle_one_connection (arg=arg@entry=0x55ee788a6a58) at /test/10.6_opt/sql/sql_connect.cc:1312
      #14 0x000055ee74e049c6 in pfs_spawn_thread (arg=0x55ee788ab308) at /test/10.6_opt/storage/perfschema/pfs.cc:2201
      #15 0x00001554e689f609 in start_thread (arg=<optimized out>) at pthread_create.c:477
      #16 0x00001554e648e293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      

      10.5.10 675c22c065110be03a5fab82442d2c3dc32aefff (Optimized)

      Core was generated by `/test/GAL_MD200421-mariadb-10.5.10-linux-x86_64-opt/bin/mysqld --defaults-file='.
      Program terminated with signal SIGSEGV, Segmentation fault.
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11)
          at ../sysdeps/unix/sysv/linux/pthread_kill.c:56
      [Current thread is 1 (Thread 0x14b728503700 (LWP 751197))]
      (gdb) bt
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56
      #1  0x000055fe08893eef in my_write_core (sig=sig@entry=11) at /test/10.5_opt/mysys/stacktrace.c:424
      #2  0x000055fe082bcf60 in handle_fatal_signal (sig=11) at /test/10.5_opt/sql/signal_handler.cc:343
      #3  <signal handler called>
      #4  my_strcasecmp_utf8mb3 (cs=<optimized out>, s=0x0, t=0x55fe089ef595 "mysql") at /test/10.5_opt/strings/ctype-utf8.c:5109
      #5  0x000055fe0817768a in get_table_category (db=db@entry=0x14b728501ed0, name=name@entry=0x14b728501fa0) at /test/10.5_opt/sql/table.cc:282
      #6  0x000055fe080affca in wsrep_tables_accessible_when_detached (tables=<optimized out>) at /test/10.5_opt/sql/sql_parse.cc:1158
      #7  mysql_execute_command (thd=0x14b6c4000c58) at /test/10.5_opt/sql/sql_parse.cc:3762
      #8  0x000055fe0809ff4f in mysql_parse (thd=thd@entry=0x14b6c4000c58, rawbuf=rawbuf@entry=0x14b6c40103f0 "WITH t AS (SELECT * FROM t0 WHERE b=0) SELECT * FROM t0", length=length@entry=55, parser_state=parser_state@entry=0x14b728502400, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_opt/sql/sql_parse.cc:8099
      #9  0x000055fe0809f95c in wsrep_mysql_parse (thd=0x14b6c4000c58, rawbuf=0x14b6c40103f0 "WITH t AS (SELECT * FROM t0 WHERE b=0) SELECT * FROM t0", length=55, parser_state=0x14b728502400, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /test/10.5_opt/sql/sql_parse.cc:7902
      #10 0x000055fe080adeef in dispatch_command (command=COM_QUERY, thd=0x14b6c4000c58, packet=<optimized out>, packet_length=<optimized out>, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /test/10.5_opt/sql/sql_class.h:1270
      #11 0x000055fe080aedec in do_command (thd=0x14b6c4000c58) at /test/10.5_opt/sql/sql_parse.cc:1370
      #12 0x000055fe081b4101 in do_handle_one_connection (connect=<optimized out>, connect@entry=0x55fe0b2d9278, put_in_cache=put_in_cache@entry=true) at /test/10.5_opt/sql/sql_connect.cc:1410
      #13 0x000055fe081b457d in handle_one_connection (arg=arg@entry=0x55fe0b2d9278) at /test/10.5_opt/sql/sql_connect.cc:1312
      #14 0x000055fe0853f5b6 in pfs_spawn_thread (arg=0x55fe0b335988) at /test/10.5_opt/storage/perfschema/pfs.cc:2201
      #15 0x000014b739ca2609 in start_thread (arg=<optimized out>) at pthread_create.c:477
      #16 0x000014b739891293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      

      Bug confirmed present in:
      MariaDB: 10.5.10 (opt), 10.5.10 (dbg), 10.6.0 (dbg), 10.6.0 (opt)

      Bug (or feature/syntax) confirmed not present in:
      MariaDB: 10.2.38, 10.3.29, 10.4.19

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            Assignee:
            jplindst Jan Lindström
            Reporter:
            ramesh Ramesh Sivaraman
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              Created:
              Updated:
              Resolved:

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