Assertion `bitmap_is_subset(&m_part_info->read_partitions, &m_part_info->lock_partitions)' failed in ha_partition::start_stmt

--source include/have_partition.inc

create table t1 (pk int auto_increment primary key) partition by hash(pk) partitions 2;

create trigger tr before insert on t1 for each row set @a=1;

insert into t1 partition (p1) values (1);

# cleanup

drop table t1;

mysqld: /data/src/10.3/sql/ha_partition.cc:4082: virtual int ha_partition::start_stmt(THD*, thr_lock_type): Assertion `bitmap_is_subset(&m_part_info->read_partitions, &m_part_info->lock_partitions)' failed.

200123 22:21:53 [ERROR] mysqld got signal 6 ;

#7  0x00007f4468ee2f12 in __GI___assert_fail (assertion=0x56443d283438 "bitmap_is_subset(&m_part_info->read_partitions, &m_part_info->lock_partitions)", file=0x56443d2826c0 "/data/src/10.3/sql/ha_partition.cc", line=4082, function=0x56443d286a20 <ha_partition::start_stmt(THD*, thr_lock_type)::__PRETTY_FUNCTION__> "virtual int ha_partition::start_stmt(THD*, thr_lock_type)") at assert.c:101

#8  0x000056443cdfd537 in ha_partition::start_stmt (this=0x7f4448075238, thd=0x7f4448000af0, lock_type=TL_WRITE_CONCURRENT_INSERT) at /data/src/10.3/sql/ha_partition.cc:4081

#9  0x000056443c226fe8 in check_lock_and_start_stmt (thd=0x7f4448000af0, prelocking_ctx=0x7f4448004900, table_list=0x7f4448012968) at /data/src/10.3/sql/sql_base.cc:4807

#10 0x000056443c2284b7 in lock_tables (thd=0x7f4448000af0, tables=0x7f4448012968, count=1, flags=0) at /data/src/10.3/sql/sql_base.cc:5324

#11 0x000056443c22793b in open_and_lock_tables (thd=0x7f4448000af0, options=..., tables=0x7f4448012968, derived=true, flags=0, prelocking_strategy=0x7f4464086a28) at /data/src/10.3/sql/sql_base.cc:5041

#12 0x000056443c1e4cf9 in open_and_lock_tables (thd=0x7f4448000af0, tables=0x7f4448012968, derived=true, flags=0) at /data/src/10.3/sql/sql_base.h:505

#13 0x000056443c275639 in mysql_insert (thd=0x7f4448000af0, table_list=0x7f4448012968, fields=..., values_list=..., update_fields=..., update_values=..., duplic=DUP_ERROR, ignore=false) at /data/src/10.3/sql/sql_insert.cc:760

#14 0x000056443c2ba2b5 in mysql_execute_command (thd=0x7f4448000af0) at /data/src/10.3/sql/sql_parse.cc:4455

#15 0x000056443c2c5b91 in mysql_parse (thd=0x7f4448000af0, rawbuf=0x7f4448012818 "insert into t1 partition (p1) values (1)", length=40, parser_state=0x7f44640875e0, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:7818

#16 0x000056443c2b2705 in dispatch_command (command=COM_QUERY, thd=0x7f4448000af0, packet=0x7f4448123481 "insert into t1 partition (p1) values (1)", packet_length=40, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1856

#17 0x000056443c2b104d in do_command (thd=0x7f4448000af0) at /data/src/10.3/sql/sql_parse.cc:1401

#18 0x000056443c4289bc in do_handle_one_connection (connect=0x56443ec278a0) at /data/src/10.3/sql/sql_connect.cc:1403

#19 0x000056443c42871e in handle_one_connection (arg=0x56443ec278a0) at /data/src/10.3/sql/sql_connect.cc:1308

#20 0x000056443cdd96ee in pfs_spawn_thread (arg=0x56443eb71ea0) at /data/src/10.3/storage/perfschema/pfs.cc:1869

#21 0x00007f446ae6b4a4 in start_thread (arg=0x7f4464088700) at pthread_create.c:456

#22 0x00007f4468f9fd0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97