Spider randomly crashes on SELECT with LIMIT/OFFSET

SET @@session.spider_same_server_link = ON; 

use test;

GRANT ALL PRIVILEGES ON *.* TO 'spinne'@'127.0.0.1'  IDENTIFIED BY 'password';

CREATE SERVER IF NOT EXISTS data1

FOREIGN DATA WRAPPER mysql

OPTIONS(

HOST '127.0.0.1',

DATABASE 'test',

USER 'spinne',

PORT 16000,

PASSWORD 'password'

);

CREATE TABLE IF NOT EXISTS `spider_tab` (

  `col1`int,

  `col2`int,

  PRIMARY KEY (`col1`)

) ENGINE=SPIDER DEFAULT CHARSET=utf8 COMMENT='table "spider_data_tab"'

PARTITION BY LIST COLUMNS(`col1`)

(PARTITION `pt1` DEFAULT COMMENT = 'srv "data1"' ENGINE = SPIDER);

CREATE TABLE IF NOT EXISTS `spider_data_tab` (

  `col1` int,

  `col2` int,

  PRIMARY KEY (`col1`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

insert into `spider_data_tab` VALUES (1,999), (2,999);

# Repeat a few times

select * from spider_tab limit 1 offset 1;

select * from spider_tab offset 1;

# Repeat a few times

select * from spider_tab limit 1 offset 1;

Version: '10.5.9-MariaDB-debug-log'  socket: '/home/vagrant/repo/mariadb-server/bld/mysql-test/var/tmp/mysqld.1.1.sock'  port: 16000  Source distribution

mariadbd: /home/vagrant/repo/mariadb-server/sql/sql_error.cc:445: void Diagnostics_area::set_error_status(uint, const char*, const char*, const Sql_user_condition_identity&, const Sql_condition*): Assertion `! is_set() || m_can_overwrite_status' failed.

210718 18:47:06 [ERROR] mysqld got signal 6 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed,

something is definitely wrong and this may fail.

Server version: 10.5.9-MariaDB-debug-log

key_buffer_size=1048576

read_buffer_size=131072

max_used_connections=2

max_threads=153

thread_count=23

It is possible that mysqld could use up to

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 63744 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f4728002388

Attempting backtrace. You can use the following information to find out

where mysqld died. If you see no messages after this, something went

terribly wrong...

stack_bottom = 0x7f473e159d38 thread_stack 0x49000

mysys/stacktrace.c:212(my_print_stacktrace)[0x5564a17779ba]

sql/signal_handler.cc:211(handle_fatal_signal)[0x5564a0e56935]

??:0(__restore_rt)[0x7f473ecf03c0]

??:0(gsignal)[0x7f473e7db18b]

??:0(abort)[0x7f473e7ba859]

/lib/x86_64-linux-gnu/libc.so.6(+0x25729)[0x7f473e7ba729]

??:0(__assert_fail)[0x7f473e7cbf36]

sql/sql_error.cc:448(Diagnostics_area::set_error_status(unsigned int, char const*, char const*, Sql_user_condition_identity const&, Sql_condition const*))[0x5564a0a95910]

sql/sql_class.cc:1149(THD::raise_condition(unsigned int, char const*, Sql_state_errno_level::enum_warning_level, Sql_user_condition_identity const&, char const*))[0x5564a0a6e847]

sql/sql_class.h:4546(THD::raise_condition(unsigned int, char const*, Sql_state_errno_level::enum_warning_level, char const*))[0x5564a09aaf80]

sql/mysqld.cc:3087(my_message_sql)[0x5564a099dc0c]

mysys/my_error.c:154(my_printf_error)[0x5564a176844f]

spider/spd_db_mysql.cc:2012(spider_db_mbase::connect(char*, char*, char*, long, char*, char*, int, long long))[0x7f473e2c8d27]

spider/spd_db_conn.cc:178(spider_db_connect(st_spider_share const*, st_spider_conn*, int))[0x7f473e1df06f]

spider/spd_db_conn.cc:293(spider_db_conn_queue_action(st_spider_conn*))[0x7f473e1dfb9b]

spider/spd_db_conn.cc:629(spider_db_before_query(st_spider_conn*, int*))[0x7f473e1e1b19]

spider/spd_db_conn.cc:931(spider_db_set_names_internal(st_spider_transaction*, st_spider_share*, st_spider_conn*, int, int*))[0x7f473e1e387e]

spider/spd_db_conn.cc:977(spider_db_set_names(ha_spider*, st_spider_conn*, int))[0x7f473e1e3c80]

spider/spd_db_mysql.cc:14378(spider_mbase_handler::show_table_status(int, int, unsigned int))[0x7f473e2ff341]

spider/spd_db_conn.cc:6351(spider_db_show_table_status(ha_spider*, int, int, unsigned int))[0x7f473e1fa75a]

spider/spd_table.cc:8026(spider_get_sts(st_spider_share*, int, long, ha_spider*, double, int, int, int, unsigned int))[0x7f473e256485]

spider/spd_table.cc:10438(spider_table_bg_sts_action(void*))[0x7f473e25ded0]

??:0(start_thread)[0x7f473ece4609]

??:0(clone)[0x7f473e8b7293]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x0): (null)

Connection ID (thread ID): 7

Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off

The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains

information that should help you find out what is causing the crash.

We think the query pointer is invalid, but we will try to print it anyway.

Query: