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  1. MariaDB Server
  2. MDEV-23256

SIGSEGV in Query_cache::unlink_table on SELECT | Assertion `table_block_data->m_cached_query_count >= 0' failed in Query_cache::unlink_table | 10.6 opt regression: SIGSEGV in Query_cache::double_linked_list_exclude

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      Description

      SET GLOBAL query_cache_type=ON;
      SET GLOBAL query_cache_size=1024*64;
      USE test;
      CREATE TABLE t (a INT) ENGINE=InnoDB PARTITION BY KEY(a) PARTITIONS 99;
      SET SESSION query_cache_type=DEFAULT;
      SELECT COUNT(*) FROM t WHERE c1=2;
      

      Leads to:

      10.5.5 30e7a0a866dce530d8328c6d614e48d39a264f9b (Debug)

      Core was generated by `/test/MD140720-mariadb-10.5.5-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.
      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:57
      [Current thread is 1 (Thread 0x14ce635f6700 (LWP 2425768))]
      (gdb) bt
      #0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57
      #1  0x000055872a9ca4d7 in my_write_core (sig=sig@entry=11) at /test/10.5_dbg/mysys/stacktrace.c:518
      #2  0x000055872a1849ba in handle_fatal_signal (sig=11) at /test/10.5_dbg/sql/signal_handler.cc:330
      #3  <signal handler called>
      #4  0x0000558729e65bfb in Query_cache::unlink_table (this=this@entry=0x55872b714920 <query_cache>, node=0x14ce3f880c78) at /test/10.5_dbg/sql/sql_cache.cc:3618
      #5  0x0000558729e67431 in Query_cache::register_all_tables (this=this@entry=0x55872b714920 <query_cache>, thd=thd@entry=0x14ce3f815088, block=block@entry=0x14ce3f880160, tables_used=tables_used@entry=0x14ce3f8747e8, tables_arg=tables_arg@entry=100) at /test/10.5_dbg/sql/sql_cache.cc:3490
      #6  0x0000558729e67ba3 in Query_cache::store_query (this=0x55872b714920 <query_cache>, thd=thd@entry=0x14ce3f815088, tables_used=tables_used@entry=0x14ce3f8747e8) at /test/10.5_dbg/sql/sql_cache.cc:1551
      #7  0x0000558729edf7cf in execute_sqlcom_select (thd=thd@entry=0x14ce3f815088, all_tables=0x14ce3f8747e8) at /test/10.5_dbg/sql/sql_parse.cc:6208
      #8  0x0000558729ed88b6 in mysql_execute_command (thd=thd@entry=0x14ce3f815088) at /test/10.5_dbg/sql/sql_parse.cc:3931
      #9  0x0000558729ee5752 in mysql_parse (thd=thd@entry=0x14ce3f815088, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x14ce635f5350, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_dbg/sql/sql_parse.cc:7993
      #10 0x0000558729ed2204 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x14ce3f815088, packet=packet@entry=0x14ce3f867089 "SELECT COUNT(*) FROM t WHERE c1=2", packet_length=packet_length@entry=33, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_dbg/sql/sql_parse.cc:1866
      #11 0x0000558729ed09de in do_command (thd=0x14ce3f815088) at /test/10.5_dbg/sql/sql_parse.cc:1347
      #12 0x000055872a02cc3b in do_handle_one_connection (connect=<optimized out>, connect@entry=0x14ce424c7808, put_in_cache=put_in_cache@entry=true) at /test/10.5_dbg/sql/sql_connect.cc:1411
      #13 0x000055872a02d357 in handle_one_connection (arg=arg@entry=0x14ce424c7808) at /test/10.5_dbg/sql/sql_connect.cc:1313
      #14 0x000055872a490ca8 in pfs_spawn_thread (arg=0x14ce60446508) at /test/10.5_dbg/storage/perfschema/pfs.cc:2201
      #15 0x000014ce6256f6db in start_thread (arg=0x14ce635f6700) at pthread_create.c:463
      #16 0x000014ce6196da3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
      

      Bug confirmed present in:
      MariaDB: 10.1.46 (dbg), 10.2.33 (dbg), 10.3.24 (dbg), 10.4.14 (dbg), 10.5.5 (dbg)

      Bug confirmed not present in:
      MariaDB: 10.1.46 (opt), 10.2.33 (opt), 10.3.24 (opt), 10.4.14 (opt), 10.5.5 (opt)
      MySQL: 5.5.62 (dbg), 5.5.62 (opt), 5.6.47 (dbg), 5.6.47 (opt), 5.7.29 (dbg), 5.7.29 (opt), 8.0.19 (dbg), 8.0.19 (opt)

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              Assignee:
              sanja Oleksandr Byelkin
              Reporter:
              Roel Roel Van de Paar
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                Created:
                Updated:

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