mysqld: /home/elenst/MDEV-23439/10.2/storage/innobase/buf/buf0rea.cc:296: ulint buf_read_ahead_random(page_id_t, const page_size_t&, ulint): Assertion `size == space->size' failed.

200810 10:58:31 [ERROR] mysqld got signal 6 ;

#3  0x00007f1d678274a2 in __GI___assert_fail (assertion=0x5648a81141e1 "size == space->size", file=0x5648a8114580 "/home/elenst/MDEV-23439/10.2/storage/innobase/buf/buf0rea.cc", 

    line=296, 

    function=0x5648a8115000 <buf_read_ahead_random(page_id_t, page_size_t const&, unsigned long)::__PRETTY_FUNCTION__> "ulint buf_read_ahead_random(page_id_t, const page_size_t&, ulint)") at assert.c:101

#4  0x00005648a7ba04e9 in buf_read_ahead_random (page_id=..., page_size=..., inside_ibuf=0) at /home/elenst/MDEV-23439/10.2/storage/innobase/buf/buf0rea.cc:296

#5  0x00005648a7b7757a in buf_page_get_low (page_id=..., page_size=..., rw_latch=2, guess=0x0, mode=10, 

    file=0x5648a8135fe0 "/home/elenst/MDEV-23439/10.2/storage/innobase/fil/fil0fil.cc", line=4497, mtr=0x7f1d2c0a86d0, err=0x0)

    at /home/elenst/MDEV-23439/10.2/storage/innobase/buf/buf0buf.cc:4390

#6  0x00005648a7b78c49 in buf_page_get_gen (page_id=..., page_size=..., rw_latch=2, guess=0x0, mode=10, 

    file=0x5648a8135fe0 "/home/elenst/MDEV-23439/10.2/storage/innobase/fil/fil0fil.cc", line=4497, mtr=0x7f1d2c0a86d0, err=0x0)

    at /home/elenst/MDEV-23439/10.2/storage/innobase/buf/buf0buf.cc:4908

#7  0x00005648a7c012e0 in fsp_flags_try_adjust (space_id=1918, flags=41) at /home/elenst/MDEV-23439/10.2/storage/innobase/fil/fil0fil.cc:4495

#8  0x00005648a7c015d0 in fil_space_for_table_exists_in_mem (id=1918, name=0x7f1ce00d2f90 "test/#sql2-20ea-e", table_flags=41)

    at /home/elenst/MDEV-23439/10.2/storage/innobase/fil/fil0fil.cc:4555

#9  0x00005648a7a4e32d in row_drop_single_table_tablespace (space_id=1918, tablename=0x7f1ce00d2f90 "test/#sql2-20ea-e", filepath=0x7f1ce00f5b50 "./test/#sql2-20ea-e.ibd", 

    table_flags=41) at /home/elenst/MDEV-23439/10.2/storage/innobase/row/row0mysql.cc:3253

#10 0x00005648a7a4f65c in row_drop_table_for_mysql (name=0x7f1d2c0a94f0 "test/#sql2-20ea-e", trx=0x7f1d650a1268, sqlcom=SQLCOM_ALTER_TABLE, create_failed=false, nonatomic=true)

    at /home/elenst/MDEV-23439/10.2/storage/innobase/row/row0mysql.cc:3740

#11 0x00005648a792a488 in ha_innobase::delete_table (this=0x7f1ce0013590, name=0x7f1d2c0aacf0 "./test/#sql2-20ea-e", sqlcom=SQLCOM_ALTER_TABLE)

    at /home/elenst/MDEV-23439/10.2/storage/innobase/handler/ha_innodb.cc:13304

#12 0x00005648a7914ff8 in ha_innobase::delete_table (this=0x7f1ce0013590, name=0x7f1d2c0aacf0 "./test/#sql2-20ea-e")

    at /home/elenst/MDEV-23439/10.2/storage/innobase/handler/ha_innodb.cc:13429

#13 0x00005648a7712d1e in handler::ha_delete_table (this=0x7f1ce0013590, name=0x7f1d2c0aacf0 "./test/#sql2-20ea-e") at /home/elenst/MDEV-23439/10.2/sql/handler.cc:4473

#14 0x00005648a770d441 in ha_delete_table (thd=0x7f1ce0000d50, table_type=0x5648ab13fa00, path=0x7f1d2c0aacf0 "./test/#sql2-20ea-e", db=0x7f1ce0011b30 "test", 

    alias=0x7f1d2c0ab0d0 "#sql2-20ea-e", generate_warning=false) at /home/elenst/MDEV-23439/10.2/sql/handler.cc:2442

#15 0x00005648a75545ff in quick_rm_table (thd=0x7f1ce0000d50, base=0x5648ab13fa00, db=0x7f1ce0011b30 "test", table_name=0x7f1d2c0ab0d0 "#sql2-20ea-e", flags=3, table_path=0x0)

    at /home/elenst/MDEV-23439/10.2/sql/sql_table.cc:2734

#16 0x00005648a7567ac8 in mysql_alter_table (thd=0x7f1ce0000d50, new_db=0x7f1ce0011b30 "test", new_name=0x0, create_info=0x7f1d2c0ac2c0, table_list=0x7f1ce0011518, 

    alter_info=0x7f1d2c0ac210, order_num=0, order=0x0, ignore=true) at /home/elenst/MDEV-23439/10.2/sql/sql_table.cc:9876

#17 0x00005648a75e390b in Sql_cmd_alter_table::execute (this=0x7f1ce0011b60, thd=0x7f1ce0000d50) at /home/elenst/MDEV-23439/10.2/sql/sql_alter.cc:333

#18 0x00005648a7496537 in mysql_execute_command (thd=0x7f1ce0000d50) at /home/elenst/MDEV-23439/10.2/sql/sql_parse.cc:5964

#19 0x00005648a749b4cf in mysql_parse (thd=0x7f1ce0000d50, 

    rawbuf=0x7f1ce0011338 "ALTER /* QNO 122120 CON_ID 15 */ IGNORE TABLE alt_t5 /* 100301 WAIT 1 */ /*!100200 DROP CONSTRAINT IF EXISTS k */ /* COMMENT 'Skipped DROP CONSTRAINT' */", 

    length=153, parser_state=0x7f1d2c0ad640, is_com_multi=false, is_next_command=false) at /home/elenst/MDEV-23439/10.2/sql/sql_parse.cc:7733

#20 0x00005648a74897db in dispatch_command (command=COM_QUERY, thd=0x7f1ce0000d50, packet=0x7f1ce0008b11 "", packet_length=153, is_com_multi=false, is_next_command=false)

    at /home/elenst/MDEV-23439/10.2/sql/sql_parse.cc:1823

#21 0x00005648a7488258 in do_command (thd=0x7f1ce0000d50) at /home/elenst/MDEV-23439/10.2/sql/sql_parse.cc:1377

#22 0x00005648a75de491 in do_handle_one_connection (connect=0x5648abc8afe0) at /home/elenst/MDEV-23439/10.2/sql/sql_connect.cc:1336

#23 0x00005648a75de1fc in handle_one_connection (arg=0x5648abc8afe0) at /home/elenst/MDEV-23439/10.2/sql/sql_connect.cc:1241

#24 0x00007f1d6852e6db in start_thread (arg=0x7f1d2c0ae700) at pthread_create.c:463

#25 0x00007f1d67918a3f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

--mem --mysqld=--innodb --mysqld=--default-storage-engine=InnoDB --mysqld=--partition --mysqld=--loose-innodb-stats-persistent=on --mysqld=--character-set-server=utf8 --mysqld=--max-allowed-packet=128M --mysqld=--innodb-buffer-pool-size=128M --mysqld=--innodb-log-file-size=48M --mysqld=--log_bin_trust_function_creators=OFF --mysqld=--key_buffer_size=128M --mysqld=--performance-schema=OFF --mysqld=--log_output=FILE --mysqld=--max-statement-time=20 --mysqld=--loose-max-statement-time=10 --mysqld=--innodb-lock-wait-timeout=3 --mysqld=--lock-wait-timeout=5