InnoDB: Failing assertion: lock->lock_word.load(std::memory_order_relaxed) == X_LOCK_DECR upon server shutdown

2020-01-03 14:39:50 0x7f9534216700  InnoDB: Assertion failure in file /data/src/10.4/storage/innobase/sync/sync0rw.cc line 255

InnoDB: Failing assertion: lock->lock_word.load(std::memory_order_relaxed) == X_LOCK_DECR

Query (0x7f94c0011d68): ALTER TABLE t1 CHANGE IF EXISTS b a INT, ALGORITHM=COPY /* QNO 169 CON_ID 12 */

Connection ID (thread ID): 12

Status: KILL_SERVER

#6  0x00005653d0678a6a in ut_dbg_assertion_failed (expr=0x5653d0e03f18 "lock->lock_word.load(std::memory_order_relaxed) == X_LOCK_DECR", file=0x5653d0e03e90 "/data/src/10.4/storage/innobase/sync/sync0rw.cc", line=255) at /data/src/10.4/storage/innobase/ut/ut0dbg.cc:60

#7  0x00005653d061c65f in rw_lock_free_func (lock=0x7f94c00b1e18) at /data/src/10.4/storage/innobase/sync/sync0rw.cc:255

#8  0x00005653d07d3a7e in pfs_rw_lock_free_func (lock=0x7f94c00b1e18) at /data/src/10.4/storage/innobase/include/sync0rw.ic:617

#9  0x00005653d07d7d89 in fts_cache_destroy (cache=0x7f94c00b1e18) at /data/src/10.4/storage/innobase/fts/fts0fts.cc:287

#10 0x00005653d07e2fb4 in fts_t::~fts_t (this=0x7f94c00844d8, __in_chrg=<optimized out>) at /data/src/10.4/storage/innobase/fts/fts0fts.cc:5349

#11 0x00005653d07e3094 in fts_free (table=0x7f94c043d0a8) at /data/src/10.4/storage/innobase/fts/fts0fts.cc:5386

#12 0x00005653d059a3e4 in row_drop_ancillary_fts_tables (table=0x7f94c043d0a8, trx=0x7f95218e4830) at /data/src/10.4/storage/innobase/row/row0mysql.cc:3248

#13 0x00005653d059b7fb in row_drop_table_for_mysql (name=0x7f9534210e80 "test/#sql-73c7_c", trx=0x7f95218e4830, sqlcom=SQLCOM_ALTER_TABLE, create_failed=false, nonatomic=true) at /data/src/10.4/storage/innobase/row/row0mysql.cc:3728

#14 0x00005653d0413245 in ha_innobase::delete_table (this=0x7f94c0013a10, name=0x7f94c00c7058 "./test/#sql-73c7_c", sqlcom=SQLCOM_ALTER_TABLE) at /data/src/10.4/storage/innobase/handler/ha_innodb.cc:13184

#15 0x00005653d03fc780 in ha_innobase::delete_table (this=0x7f94c0013a10, name=0x7f94c00c7058 "./test/#sql-73c7_c") at /data/src/10.4/storage/innobase/handler/ha_innodb.cc:13309

#16 0x00005653d01aed5c in handler::ha_delete_table (this=0x7f94c0013a10, name=0x7f94c00c7058 "./test/#sql-73c7_c") at /data/src/10.4/sql/handler.cc:4695

#17 0x00005653d00d3783 in THD::rm_temporary_table (this=0x7f94c0000af0, base=0x5653d284a5c0, path=0x7f94c00c7058 "./test/#sql-73c7_c") at /data/src/10.4/sql/temporary_tables.cc:701

#18 0x00005653d00d5663 in THD::free_tmp_table_share (this=0x7f94c0000af0, share=0x7f94c00c6ac0, delete_table=true) at /data/src/10.4/sql/temporary_tables.cc:1464

#19 0x00005653d00d35bb in THD::drop_temporary_table (this=0x7f94c0000af0, table=0x7f94c043aa80, is_trans=0x0, delete_table=true) at /data/src/10.4/sql/temporary_tables.cc:664

#20 0x00005653cff3810b in mysql_alter_table (thd=0x7f94c0000af0, new_db=0x7f94c00052b0, new_name=0x7f94c00056b8, create_info=0x7f9534213d40, table_list=0x7f94c0011eb0, alter_info=0x7f9534213c80, order_num=0, order=0x0, ignore=false) at /data/src/10.4/sql/sql_table.cc:10470

#21 0x00005653cffcf0cf in Sql_cmd_alter_table::execute (this=0x7f94c00126a8, thd=0x7f94c0000af0) at /data/src/10.4/sql/sql_alter.cc:508

#22 0x00005653cfe4db75 in mysql_execute_command (thd=0x7f94c0000af0) at /data/src/10.4/sql/sql_parse.cc:6102

#23 0x00005653cfe53237 in mysql_parse (thd=0x7f94c0000af0, rawbuf=0x7f94c0011d68 "ALTER TABLE t1 CHANGE IF EXISTS b a INT, ALGORITHM=COPY /* QNO 169 CON_ID 12 */", length=79, parser_state=0x7f95342151b0, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:7901

#24 0x00005653cfe3e3dc in dispatch_command (command=COM_QUERY, thd=0x7f94c0000af0, packet=0x7f94c037ebf1 "ALTER TABLE t1 CHANGE IF EXISTS b a INT, ALGORITHM=COPY /* QNO 169 CON_ID 12 */ ", packet_length=80, is_com_multi=false, is_next_command=false) at /data/src/10.4/sql/sql_parse.cc:1842

#25 0x00005653cfe3ca69 in do_command (thd=0x7f94c0000af0) at /data/src/10.4/sql/sql_parse.cc:1360

#26 0x00005653cffc59df in do_handle_one_connection (connect=0x5653d3484930) at /data/src/10.4/sql/sql_connect.cc:1412

#27 0x00005653cffc572e in handle_one_connection (arg=0x5653d3484930) at /data/src/10.4/sql/sql_connect.cc:1316

#28 0x00007f95391754a4 in start_thread (arg=0x7f9534216700) at pthread_create.c:456

#29 0x00007f95372a9d0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

git clone https://github.com/MariaDB/randgen --branch mdev21329 rqg-mdev21329

cd rqg-mdev21329

perl runall-new.pl --basedir=<your basedir>  --grammar=mdev21329.yy --duration=600 --threads=2 --scenario=Restart --skip-gendata --seed=1 --scenario-restart-interval=20 --vardir=/dev/shm/vardir-mdev21329

    INSERT INTO t1 () VALUES () |

    ALTER TABLE t1 CHANGE IF EXISTS <field> <field> INT, ALGORITHM=COPY;

2020-01-03 14:49:39 0x7f8f59057700  InnoDB: Assertion failure in file /data/src/10.2/storage/innobase/sync/sync0rw.cc line 259

InnoDB: Failing assertion: lock->lock_word == X_LOCK_DECR

2020-01-03 14:48:58 0x7fbc04232700  InnoDB: Assertion failure in file /data/src/10.3/storage/innobase/sync/sync0rw.cc line 258

InnoDB: Failing assertion: my_atomic_load32_explicit(&lock->lock_word, MY_MEMORY_ORDER_RELAXED) == X_LOCK_DECR