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  1. MariaDB Server
  2. MDEV-20423

Assertion `0' failed or `btr_validate_index(index, 0, false)' in row_upd_sec_index_entry or error code 126: Index is corrupted upon DELETE with TIME_ROUND_FRACTIONAL

Details

    Description

      This crash is very similar to MDEV-18156, but now with TIME_ROUND_FRACTIONAL instead of PAD_CHAR_TO_FULL_LENGTH.
      It should be addressed in a separate patch after the fix for MDEV-18156 propagates to 10.4.

      This crash is also very similar to MDEV-18153, but the generation expressions are different:

      • GENERATED ALWAYS AS (CAST(a AS DATETIME(3))) VIRTUAL
      • GENERATED ALWAYS AS (CAST(a AS TIME(3))) VIRTUAL

      MDEV-18156 needs MDEV-18156 as a dependency. MDEV-18153 can possibly be fixed alone.

      SET sql_mode='';
      		 
      CREATE OR REPLACE TABLE t1 (
      		 
        a DATETIME(6),
      		 
        v VARCHAR(30) GENERATED ALWAYS AS (CAST(a AS DATETIME(3))) VIRTUAL,
      		 
        KEY (v)
      		 
      );
      		 
      INSERT IGNORE INTO t1 (a) VALUES ('2001-01-01 10:20:30.999999');
      		 
      SELECT * FROM t1;
      		 
      SET sql_mode=TIME_ROUND_FRACTIONAL;
      		 
      FLUSH TABLES;
      		 
      SELECT * FROM t1;
      		 
      UPDATE t1 SET a='2001-01-02 10:20:30.999999';


      #0  0x00007ffff76f357f in raise () from /lib64/libc.so.6
      		 
      #1  0x00007ffff76dd895 in abort () from /lib64/libc.so.6
      		 
      #2  0x00007ffff76dd769 in __assert_fail_base.cold.0 () from /lib64/libc.so.6
      		 
      #3  0x00007ffff76eba26 in __assert_fail () from /lib64/libc.so.6
      		 
      #4  0x0000000000eff9ac in row_upd_sec_index_entry (node=0x7fff60083cd0, thr=0x7fff60083fd8)
      		 
          at /home/bar/maria-git/server.10.4/storage/innobase/row/row0upd.cc:2429
      		 
      #5  0x0000000000f0001e in row_upd_sec_step (node=0x7fff60083cd0, thr=0x7fff60083fd8)
      		 
          at /home/bar/maria-git/server.10.4/storage/innobase/row/row0upd.cc:2543
      		 
      #6  0x0000000000f02736 in row_upd (node=0x7fff60083cd0, thr=0x7fff60083fd8)
      		 
          at /home/bar/maria-git/server.10.4/storage/innobase/row/row0upd.cc:3319
      		 
      #7  0x0000000000f02a9d in row_upd_step (thr=0x7fff60083fd8)
      		 
          at /home/bar/maria-git/server.10.4/storage/innobase/row/row0upd.cc:3434
      		 
      #8  0x0000000000eb654c in row_update_for_mysql (prebuilt=0x7fff60083518)
      		 
          at /home/bar/maria-git/server.10.4/storage/innobase/row/row0mysql.cc:1889
      		 
      #9  0x0000000000d60723 in ha_innobase::update_row (this=0x7fff6001dcf8, 
          old_row=0x7fff6001d8a0 "\374\231g\202\245\036\017B?\027\062\060\060\061-01-01 10:20:31.000", 
          new_row=0x7fff6001d870 "\374\231g\204\245\036\017B?\027\062\060\060\061-01-02 10:20:31.000")
      		 
          at /home/bar/maria-git/server.10.4/storage/innobase/handler/ha_innodb.cc:8840
      		 
      #10 0x0000000000b4bc0a in handler::ha_update_row (this=0x7fff6001dcf8, 
          old_data=0x7fff6001d8a0 "\374\231g\202\245\036\017B?\027\062\060\060\061-01-01 10:20:31.000", 
          new_data=0x7fff6001d870 "\374\231g\204\245\036\017B?\027\062\060\060\061-01-02 10:20:31.000")
      		 
          at /home/bar/maria-git/server.10.4/sql/handler.cc:6727
      		 
      #11 0x000000000091b9ad in mysql_update (thd=0x7fff60000d60, table_list=0x7fff60014270, fields=..., 
          values=..., conds=0x0, order_num=0, order=0x0, limit=18446744073709551615, ignore=false, 
          found_return=0x7ffff41d6218, updated_return=0x7ffff41d6210)
      		 
          at /home/bar/maria-git/server.10.4/sql/sql_update.cc:1045
      		 
      #12 0x0000000000820bc2 in mysql_execute_command (thd=0x7fff60000d60)
      		 
          at /home/bar/maria-git/server.10.4/sql/sql_parse.cc:4369
      		 
      #13 0x000000000082cd07 in mysql_parse (thd=0x7fff60000d60, 
          rawbuf=0x7fff60014168 "UPDATE t1 SET a='2001-01-02 10:20:30.999999'", length=44, 
          parser_state=0x7ffff41d7000, is_com_multi=false, is_next_command=false)
      		 
          at /home/bar/maria-git/server.10.4/sql/sql_parse.cc:7908
      		 
      #14 0x000000000081981c in dispatch_command (command=COM_QUERY, thd=0x7fff60000d60, 
          packet=0x7fff600085e1 "UPDATE t1 SET a='2001-01-02 10:20:30.999999'", packet_length=44, 
          is_com_multi=false, is_next_command=false) at /home/bar/maria-git/server.10.4/sql/sql_parse.cc:1842
      		 
      #15 0x0000000000817fc6 in do_command (thd=0x7fff60000d60)

      The same problem is repeatable with TIME type cast:

      SET sql_mode='';
      		 
      CREATE OR REPLACE TABLE t1 (
      		 
        a TIME(6),
      		 
        v VARCHAR(30) GENERATED ALWAYS AS (CAST(a AS TIME(3))) VIRTUAL,
      		 
        KEY (v)
      		 
      );
      		 
      INSERT IGNORE INTO t1 (a) VALUES ('10:20:30.999999');
      		 
      SELECT * FROM t1;
      		 
      SET sql_mode=TIME_ROUND_FRACTIONAL;
      		 
      FLUSH TABLES;
      		 
      SELECT * FROM t1;
      		 
      UPDATE t1 SET a='11:20:30.999999';

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-18156 Assertion `0' failed or `btr_validate_index(index, 0, false)' in row_upd_sec_index_entry or error code 126: Index is corrupted upon DELETE with PAD_CHAR_TO_FULL_LENGTH

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-20610 Assertion failed or btr_validate_index(..) in row_upd_sec_index_entry on a time_zone change

          • Major - Major loss of function.
          • Stalled

          Bug - A problem which impairs or prevents the functions of the product. MDEV-20618 Assertion `btr_validate_index(index, 0, false)' failed in row_upd_sec_index_entry

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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              bar Alexander Barkov
              bar Alexander Barkov
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                Resolved:

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