LeakSanitizer errors in mem_heap_create_block_func upon query from I_S.INNODB_SYS_TABLES with LIMIT ROWS EXAMINED

--source include/have_innodb.inc

CREATE TABLE t (a varchar(355), fulltext(a)) ENGINE=InnoDB;

SELECT NAME FROM information_schema.INNODB_SYS_TABLES LIMIT ROWS EXAMINED 10;

# Cleanup

DROP TABLE t;

==3121870==ERROR: LeakSanitizer: detected memory leaks

Indirect leak of 1760 byte(s) in 1 object(s) allocated from:

    #0 0x7fad818b89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x55f4345959b5 in mem_heap_create_block_func(mem_block_info_t*, unsigned long, char const*, unsigned int, unsigned long) /data/bld/10.4-asan/storage/innobase/mem/mem0mem.cc:277

    #2 0x55f43459627a in mem_heap_add_block(mem_block_info_t*, unsigned long) /data/bld/10.4-asan/storage/innobase/mem/mem0mem.cc:378

    #3 0x55f434a9fb48 in mem_heap_alloc /data/bld/10.4-asan/storage/innobase/include/mem0mem.inl:191

    #4 0x55f434aa2468 in dict_mem_table_create(char const*, fil_space_t*, unsigned long, unsigned long, unsigned long, unsigned long) /data/bld/10.4-asan/storage/innobase/dict/dict0mem.cc:182

    #5 0x55f434a95dd3 in dict_load_table_low /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:2656

    #6 0x55f434a8863e in dict_process_sys_tables_rec_and_mtr_commit(mem_block_info_t*, unsigned char const*, dict_table_t**, bool, mtr_t*) /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:402

    #7 0x55f4344c68de in i_s_sys_tables_fill_table /data/bld/10.4-asan/storage/innobase/handler/i_s.cc:5063

    #8 0x55f43344c468 in get_schema_tables_result(JOIN*, enum_schema_table_state) /data/bld/10.4-asan/sql/sql_show.cc:9224

    #9 0x55f43331769d in JOIN::exec_inner() /data/bld/10.4-asan/sql/sql_select.cc:4582

    #10 0x55f433315569 in JOIN::exec() /data/bld/10.4-asan/sql/sql_select.cc:4407

    #11 0x55f4333195f7 in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/bld/10.4-asan/sql/sql_select.cc:4846

    #12 0x55f4332e9eda in handle_select(THD*, LEX*, select_result*, unsigned long) /data/bld/10.4-asan/sql/sql_select.cc:442

    #13 0x55f43325477b in execute_sqlcom_select /data/bld/10.4-asan/sql/sql_parse.cc:6521

    #14 0x55f433241b41 in mysql_execute_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:3978

    #15 0x55f43325da6a in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:8060

    #16 0x55f433233ae1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:1857

    #17 0x55f433230650 in do_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:1378

    #18 0x55f433636d14 in do_handle_one_connection(CONNECT*) /data/bld/10.4-asan/sql/sql_connect.cc:1419

    #19 0x55f43363662b in handle_one_connection /data/bld/10.4-asan/sql/sql_connect.cc:1323

    #20 0x55f43429b26b in pfs_spawn_thread /data/bld/10.4-asan/storage/perfschema/pfs.cc:1869

    #21 0x7fad812a8043 in start_thread nptl/pthread_create.c:442

Indirect leak of 816 byte(s) in 1 object(s) allocated from:

    #0 0x7fad818b89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x55f4345959b5 in mem_heap_create_block_func(mem_block_info_t*, unsigned long, char const*, unsigned int, unsigned long) /data/bld/10.4-asan/storage/innobase/mem/mem0mem.cc:277

    #2 0x55f43459627a in mem_heap_add_block(mem_block_info_t*, unsigned long) /data/bld/10.4-asan/storage/innobase/mem/mem0mem.cc:378

    #3 0x55f434a9fb48 in mem_heap_alloc /data/bld/10.4-asan/storage/innobase/include/mem0mem.inl:191

    #4 0x55f434a9f94d in mem_heap_zalloc /data/bld/10.4-asan/storage/innobase/include/mem0mem.inl:160

    #5 0x55f434aa1f51 in dict_mem_table_create(char const*, fil_space_t*, unsigned long, unsigned long, unsigned long, unsigned long) /data/bld/10.4-asan/storage/innobase/dict/dict0mem.cc:158

    #6 0x55f434a95dd3 in dict_load_table_low /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:2656

    #7 0x55f434a8863e in dict_process_sys_tables_rec_and_mtr_commit(mem_block_info_t*, unsigned char const*, dict_table_t**, bool, mtr_t*) /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:402

    #8 0x55f4344c68de in i_s_sys_tables_fill_table /data/bld/10.4-asan/storage/innobase/handler/i_s.cc:5063

    #9 0x55f43344c468 in get_schema_tables_result(JOIN*, enum_schema_table_state) /data/bld/10.4-asan/sql/sql_show.cc:9224

    #10 0x55f43331769d in JOIN::exec_inner() /data/bld/10.4-asan/sql/sql_select.cc:4582

    #11 0x55f433315569 in JOIN::exec() /data/bld/10.4-asan/sql/sql_select.cc:4407

    #12 0x55f4333195f7 in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/bld/10.4-asan/sql/sql_select.cc:4846

    #13 0x55f4332e9eda in handle_select(THD*, LEX*, select_result*, unsigned long) /data/bld/10.4-asan/sql/sql_select.cc:442

    #14 0x55f43325477b in execute_sqlcom_select /data/bld/10.4-asan/sql/sql_parse.cc:6521

    #15 0x55f433241b41 in mysql_execute_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:3978

    #16 0x55f43325da6a in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:8060

    #17 0x55f433233ae1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:1857

    #18 0x55f433230650 in do_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:1378

    #19 0x55f433636d14 in do_handle_one_connection(CONNECT*) /data/bld/10.4-asan/sql/sql_connect.cc:1419

    #20 0x55f43363662b in handle_one_connection /data/bld/10.4-asan/sql/sql_connect.cc:1323

    #21 0x55f43429b26b in pfs_spawn_thread /data/bld/10.4-asan/storage/perfschema/pfs.cc:1869

    #22 0x7fad812a8043 in start_thread nptl/pthread_create.c:442

Indirect leak of 232 byte(s) in 1 object(s) allocated from:

    #0 0x7fad818b89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x55f4345959b5 in mem_heap_create_block_func(mem_block_info_t*, unsigned long, char const*, unsigned int, unsigned long) /data/bld/10.4-asan/storage/innobase/mem/mem0mem.cc:277

    #2 0x55f434a9fc08 in mem_heap_create_func /data/bld/10.4-asan/storage/innobase/include/mem0mem.inl:375

    #3 0x55f434aa1f3c in dict_mem_table_create(char const*, fil_space_t*, unsigned long, unsigned long, unsigned long, unsigned long) /data/bld/10.4-asan/storage/innobase/dict/dict0mem.cc:155

    #4 0x55f434a95dd3 in dict_load_table_low /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:2656

    #5 0x55f434a8863e in dict_process_sys_tables_rec_and_mtr_commit(mem_block_info_t*, unsigned char const*, dict_table_t**, bool, mtr_t*) /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:402

    #6 0x55f4344c68de in i_s_sys_tables_fill_table /data/bld/10.4-asan/storage/innobase/handler/i_s.cc:5063

    #7 0x55f43344c468 in get_schema_tables_result(JOIN*, enum_schema_table_state) /data/bld/10.4-asan/sql/sql_show.cc:9224

    #8 0x55f43331769d in JOIN::exec_inner() /data/bld/10.4-asan/sql/sql_select.cc:4582

    #9 0x55f433315569 in JOIN::exec() /data/bld/10.4-asan/sql/sql_select.cc:4407

    #10 0x55f4333195f7 in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/bld/10.4-asan/sql/sql_select.cc:4846

    #11 0x55f4332e9eda in handle_select(THD*, LEX*, select_result*, unsigned long) /data/bld/10.4-asan/sql/sql_select.cc:442

    #12 0x55f43325477b in execute_sqlcom_select /data/bld/10.4-asan/sql/sql_parse.cc:6521

    #13 0x55f433241b41 in mysql_execute_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:3978

    #14 0x55f43325da6a in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:8060

    #15 0x55f433233ae1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:1857

    #16 0x55f433230650 in do_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:1378

    #17 0x55f433636d14 in do_handle_one_connection(CONNECT*) /data/bld/10.4-asan/sql/sql_connect.cc:1419

    #18 0x55f43363662b in handle_one_connection /data/bld/10.4-asan/sql/sql_connect.cc:1323

    #19 0x55f43429b26b in pfs_spawn_thread /data/bld/10.4-asan/storage/perfschema/pfs.cc:1869

    #20 0x7fad812a8043 in start_thread nptl/pthread_create.c:442

Indirect leak of 51 byte(s) in 1 object(s) allocated from:

    #0 0x7fad818b89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x55f434a9ff03 in mem_strdup /data/bld/10.4-asan/storage/innobase/include/mem0mem.inl:450

    #2 0x55f434aa225f in dict_mem_table_create(char const*, fil_space_t*, unsigned long, unsigned long, unsigned long, unsigned long) /data/bld/10.4-asan/storage/innobase/dict/dict0mem.cc:173

    #3 0x55f434a95dd3 in dict_load_table_low /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:2656

    #4 0x55f434a8863e in dict_process_sys_tables_rec_and_mtr_commit(mem_block_info_t*, unsigned char const*, dict_table_t**, bool, mtr_t*) /data/bld/10.4-asan/storage/innobase/dict/dict0load.cc:402

    #5 0x55f4344c68de in i_s_sys_tables_fill_table /data/bld/10.4-asan/storage/innobase/handler/i_s.cc:5063

    #6 0x55f43344c468 in get_schema_tables_result(JOIN*, enum_schema_table_state) /data/bld/10.4-asan/sql/sql_show.cc:9224

    #7 0x55f43331769d in JOIN::exec_inner() /data/bld/10.4-asan/sql/sql_select.cc:4582

    #8 0x55f433315569 in JOIN::exec() /data/bld/10.4-asan/sql/sql_select.cc:4407

    #9 0x55f4333195f7 in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /data/bld/10.4-asan/sql/sql_select.cc:4846

    #10 0x55f4332e9eda in handle_select(THD*, LEX*, select_result*, unsigned long) /data/bld/10.4-asan/sql/sql_select.cc:442

    #11 0x55f43325477b in execute_sqlcom_select /data/bld/10.4-asan/sql/sql_parse.cc:6521

    #12 0x55f433241b41 in mysql_execute_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:3978

    #13 0x55f43325da6a in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:8060

    #14 0x55f433233ae1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/bld/10.4-asan/sql/sql_parse.cc:1857

    #15 0x55f433230650 in do_command(THD*) /data/bld/10.4-asan/sql/sql_parse.cc:1378

    #16 0x55f433636d14 in do_handle_one_connection(CONNECT*) /data/bld/10.4-asan/sql/sql_connect.cc:1419

    #17 0x55f43363662b in handle_one_connection /data/bld/10.4-asan/sql/sql_connect.cc:1323

    #18 0x55f43429b26b in pfs_spawn_thread /data/bld/10.4-asan/storage/perfschema/pfs.cc:1869

    #19 0x7fad812a8043 in start_thread nptl/pthread_create.c:442

SUMMARY: AddressSanitizer: 2859 byte(s) leaked in 4 allocation(s).

Author: Thirunarayanan Balathandayuthapani

Date:   Mon Nov 20 14:58:28 2023 +0530

    MDEV-28613 LeakSanitizer caused by I_S query using LIMIT ROWS EXAMINED