Assertion `page_rec_is_leaf(rec)' failed in lock_rec_validate_page upon SHOW ENGINE INNODB STATUS

mysqld: /data/src/10.2/storage/innobase/lock/lock0lock.cc:5653: ulint lock_rec_validate_page(const buf_block_t*): Assertion `page_rec_is_leaf(rec)' failed.

181124 23:15:12 [ERROR] mysqld got signal 6 ;

#7  0x00007f6516333ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6

#8  0x00005555f9151a5d in lock_rec_validate_page (block=0x7f64f39f2df8) at /data/src/10.2/storage/innobase/lock/lock0lock.cc:5653

#9  0x00005555f91520a9 in lock_rec_block_validate (space_id=9, page_no=3) at /data/src/10.2/storage/innobase/lock/lock0lock.cc:5804

#10 0x00005555f9152331 in lock_validate () at /data/src/10.2/storage/innobase/lock/lock0lock.cc:5857

#11 0x00005555f9150729 in lock_print_info_all_transactions (file=0x5555fb540410) at /data/src/10.2/storage/innobase/lock/lock0lock.cc:5348

#12 0x00005555f9277830 in srv_printf_innodb_monitor (file=0x5555fb540410, nowait=0, trx_start_pos=0x7f6500b09500, trx_end=0x7f6500b09508) at /data/src/10.2/storage/innobase/srv/srv0srv.cc:1303

#13 0x00005555f90e2f5a in innodb_show_status (hton=0x5555fb4f8730, thd=0x7f64a4000b00, stat_print=0x5555f8dc844a <stat_print(THD*, char const*, size_t, char const*, size_t, char const*, size_t)>) at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:15950

#14 0x00005555f90e39a3 in innobase_show_status (hton=0x5555fb4f8730, thd=0x7f64a4000b00, stat_print=0x5555f8dc844a <stat_print(THD*, char const*, size_t, char const*, size_t, char const*, size_t)>, stat_type=HA_ENGINE_STATUS) at /data/src/10.2/storage/innobase/handler/ha_innodb.cc:16364

#15 0x00005555f8dc87e4 in ha_show_status (thd=0x7f64a4000b00, db_type=0x5555fb4f8730, stat=HA_ENGINE_STATUS) at /data/src/10.2/sql/handler.cc:5619

#16 0x00005555f8b42627 in mysql_execute_command (thd=0x7f64a4000b00) at /data/src/10.2/sql/sql_parse.cc:3725

#17 0x00005555f8b4fb5d in mysql_parse (thd=0x7f64a4000b00, rawbuf=0x7f64a40131d8 "SHOW ENGINE INNODB STATUS /* QNO 66 CON_ID 12 */", length=48, parser_state=0x7f6500b0a250, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:8013

#18 0x00005555f8b3d495 in dispatch_command (command=COM_QUERY, thd=0x7f64a4000b00, packet=0x7f64a444b941 "", packet_length=49, is_com_multi=false, is_next_command=false) at /data/src/10.2/sql/sql_parse.cc:1824

#19 0x00005555f8b3bdf8 in do_command (thd=0x7f64a4000b00) at /data/src/10.2/sql/sql_parse.cc:1378

#20 0x00005555f8c8e537 in do_handle_one_connection (connect=0x5555fb4e4090) at /data/src/10.2/sql/sql_connect.cc:1335

#21 0x00005555f8c8e2c4 in handle_one_connection (arg=0x5555fb4e4090) at /data/src/10.2/sql/sql_connect.cc:1241

#22 0x00007f6517def494 in start_thread (arg=0x7f6500b0b700) at pthread_create.c:333

#23 0x00007f65163f093f in clone () from /lib/x86_64-linux-gnu/libc.so.6

thread2_init:

  CREATE TABLE `t1` (

    `t1` TEXT,

    `v1` VARCHAR(1),

    `t2` TEXT,

    `v2` VARCHAR(1),

    UNIQUE (`v2`),

    UNIQUE (`t2`(255))

  ) ENGINE=InnoDB ROW_FORMAT=DYNAMIC

  ; CREATE TABLE `t2` LIKE `t1`

  ; CREATE TABLE `t3` LIKE `t1`

  ; CREATE TABLE `t4` LIKE `t1`

  ; INSERT IGNORE INTO `t1` VALUES vals,vals,vals,vals,vals,vals,vals,vals,vals,vals 

  ; INSERT IGNORE INTO `t2` VALUES vals,vals,vals,vals,vals,vals,vals,vals,vals,vals 

  ; INSERT IGNORE INTO `t3` VALUES vals,vals,vals,vals,vals,vals,vals,vals,vals,vals 

  ; INSERT IGNORE INTO `t4` VALUES vals,vals,vals,vals,vals,vals,vals,vals,vals,vals 

  ; SELECT * FROM `t1` INTO OUTFILE 'load.data.t1'

  ; SELECT * FROM `t2` INTO OUTFILE 'load.data.t2'

  ; SELECT * FROM `t3` INTO OUTFILE 'load.data.t3'

  ; SELECT * FROM `t4` INTO OUTFILE 'load.data.t4'

;

vals:

  (_char(1024),_char(1),_char(1024),_char(1));

thread1:

  SHOW ENGINE INNODB STATUS;

query:

  DELETE FROM my_table LIMIT _digit |

  LOAD DATA INFILE { "'load.data.t".$prng->int(1,4)."'" } REPLACE INTO TABLE my_table

;

my_table:

  t1 | t2 | t3 | t4 ;

perl ./runall-new.pl  --basedir=/data/bld/10.2 --vardir=/dev/shm/vardir --duration=300 --threads=2 --grammar=mdev14409.yy --skip-gendata