ASAN heap-use-after-free upon shutdown with federated tables

INSTALL SONAME 'ha_federatedx';

eval CREATE SERVER fedlink FOREIGN DATA WRAPPER mysql OPTIONS (USER 'root', HOST '127.0.0.1', DATABASE 'test', PORT $MASTER_MYPORT);

CREATE TABLE t AS SELECT 1 AS a;

CREATE TABLE fed_t ENGINE=FEDERATED CONNECTION = 'fedlink/t';

UPDATE fed_t SET a = 2;

--source include/restart_mysqld.inc

DROP TABLE fed_t, t;

DROP SERVER fedlink;

UNINSTALL SONAME 'ha_federatedx';

==344864==ERROR: AddressSanitizer: heap-use-after-free on address 0x62c0000b69b8 at pc 0x5589c68d71d3 bp 0x7ffe7816d4c0 sp 0x7ffe7816d4b8

READ of size 4 at 0x62c0000b69b8 thread T0

    #0 0x5589c68d71d2 in std::__atomic_base<int>::load(std::memory_order) const /usr/include/c++/12/bits/atomic_base.h:488

    #1 0x5589c68d71d2 in Atomic_counter<int>::operator int() const /data/bld/10.11-asan-ubsan/include/my_counter.h:45

    #2 0x5589c68d71d2 in thd_async_state::pending_ops() /data/bld/10.11-asan-ubsan/sql/sql_class.h:2710

    #3 0x5589c68d71d2 in thd_async_state::wait_for_pending_ops() /data/bld/10.11-asan-ubsan/sql/sql_class.h:2725

    #4 0x5589c8810213 in net_real_write /data/bld/10.11-asan-ubsan/sql/net_serv.cc:678

    #5 0x5589c8811505 in net_flush /data/bld/10.11-asan-ubsan/sql/net_serv.cc:411

    #6 0x5589c88125f2 in net_write_command /data/bld/10.11-asan-ubsan/sql/net_serv.cc:561

    #7 0x5589c7c5ee38 in cli_advanced_command /data/bld/10.11-asan-ubsan/sql-common/client.c:503

    #8 0x5589c7c54c9f in mysql_close_slow_part /data/bld/10.11-asan-ubsan/sql-common/client.c:3428

    #9 0x5589c7c54dff in server_mysql_close /data/bld/10.11-asan-ubsan/sql-common/client.c:3440

    #10 0x7ff354b97514 in federatedx_io_mysql::~federatedx_io_mysql() /data/bld/10.11-asan-ubsan/storage/federatedx/federatedx_io_mysql.cc:154

    #11 0x7ff354b97754 in federatedx_io_mysql::~federatedx_io_mysql() /data/bld/10.11-asan-ubsan/storage/federatedx/federatedx_io_mysql.cc:158

    #12 0x7ff354b8ea03 in federatedx_txn::close(st_fedrated_server*) /data/bld/10.11-asan-ubsan/storage/federatedx/federatedx_txn.cc:88

    #13 0x7ff354b5146b in free_server /data/bld/10.11-asan-ubsan/storage/federatedx/ha_federatedx.cc:1693

    #14 0x7ff354b51ac5 in free_share /data/bld/10.11-asan-ubsan/storage/federatedx/ha_federatedx.cc:1732

    #15 0x7ff354b6f14f in ha_federatedx::close() /data/bld/10.11-asan-ubsan/storage/federatedx/ha_federatedx.cc:1866

    #16 0x5589c7df6df3 in handler::ha_close() /data/bld/10.11-asan-ubsan/sql/handler.cc:3599

    #17 0x5589c71be5b2 in closefrm(TABLE*) /data/bld/10.11-asan-ubsan/sql/table.cc:4683

    #18 0x5589c78f1312 in intern_close_table /data/bld/10.11-asan-ubsan/sql/table_cache.cc:230

    #19 0x5589c78f2d32 in tc_purge() /data/bld/10.11-asan-ubsan/sql/table_cache.cc:324

    #20 0x5589c67a21ec in purge_tables() /data/bld/10.11-asan-ubsan/sql/sql_base.cc:332

    #21 0x5589c78ef4c6 in tdc_start_shutdown() /data/bld/10.11-asan-ubsan/sql/table_cache.cc:649

    #22 0x5589c63cd9b3 in clean_up /data/bld/10.11-asan-ubsan/sql/mysqld.cc:1986

    #23 0x5589c63e57aa in mysqld_main(int, char**) /data/bld/10.11-asan-ubsan/sql/mysqld.cc:6068

    #24 0x5589c63b8931 in main /data/bld/10.11-asan-ubsan/sql/main.cc:34

    #25 0x7ff35fa46249 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58

    #26 0x7ff35fa46304 in __libc_start_main_impl ../csu/libc-start.c:360

    #27 0x5589c63b8860 in _start (/share8t/bld/10.11-asan-ubsan/sql/mariadbd+0x78e8860)

0x62c0000b69b8 is located 26552 bytes inside of 28384-byte region [0x62c0000b0200,0x62c0000b70e0)

freed by thread T5 here:

    #0 0x7ff360eb76a8 in __interceptor_free ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:52

    #1 0x5589c9fbd9b9 in my_free /data/bld/10.11-asan-ubsan/mysys/my_malloc.c:217

    #2 0x5589c68c8a7e in ilink::operator delete(void*, unsigned long) /data/bld/10.11-asan-ubsan/sql/sql_list.h:683

    #3 0x5589c68c8a7e in THD::~THD() /data/bld/10.11-asan-ubsan/sql/sql_class.cc:1834

    #4 0x5589c738116b in do_handle_one_connection(CONNECT*, bool) /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1516

    #5 0x5589c7382062 in handle_one_connection /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1387

    #6 0x5589c8d03de6 in pfs_spawn_thread /data/bld/10.11-asan-ubsan/storage/perfschema/pfs.cc:2201

    #7 0x7ff35faa81c3 in start_thread nptl/pthread_create.c:442

previously allocated by thread T5 here:

    #0 0x7ff360eb89cf in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:69

    #1 0x5589c9fbd25f in my_malloc /data/bld/10.11-asan-ubsan/mysys/my_malloc.c:92

    #2 0x5589c63ed459 in ilink::operator new(unsigned long) /data/bld/10.11-asan-ubsan/sql/sql_list.h:678

    #3 0x5589c737fb68 in CONNECT::create_thd(THD*) /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1598

    #4 0x5589c73809c4 in do_handle_one_connection(CONNECT*, bool) /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1431

    #5 0x5589c7382062 in handle_one_connection /data/bld/10.11-asan-ubsan/sql/sql_connect.cc:1387

    #6 0x5589c8d03de6 in pfs_spawn_thread /data/bld/10.11-asan-ubsan/storage/perfschema/pfs.cc:2201

    #7 0x7ff35faa81c3 in start_thread nptl/pthread_create.c:442

Thread T5 created by T0 here:

    #0 0x7ff360e49726 in __interceptor_pthread_create ../../../../src/libsanitizer/asan/asan_interceptors.cpp:207

    #1 0x5589c8cf96b2 in my_thread_create /data/bld/10.11-asan-ubsan/storage/perfschema/my_thread.h:52

    #2 0x5589c8d00fda in pfs_spawn_thread_v1 /data/bld/10.11-asan-ubsan/storage/perfschema/pfs.cc:2252

    #3 0x5589c63d10ac in inline_mysql_thread_create /data/bld/10.11-asan-ubsan/include/mysql/psi/mysql_thread.h:1139

    #4 0x5589c63d10ac in create_thread_to_handle_connection(CONNECT*) /data/bld/10.11-asan-ubsan/sql/mysqld.cc:6146

    #5 0x5589c63e2f36 in create_new_thread(CONNECT*) /data/bld/10.11-asan-ubsan/sql/mysqld.cc:6205

    #6 0x5589c63e3154 in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /data/bld/10.11-asan-ubsan/sql/mysqld.cc:6267

    #7 0x5589c63e3d95 in handle_connections_sockets() /data/bld/10.11-asan-ubsan/sql/mysqld.cc:6390

    #8 0x5589c63e4241 in run_main_loop /data/bld/10.11-asan-ubsan/sql/mysqld.cc:5646

    #9 0x5589c63e5607 in mysqld_main(int, char**) /data/bld/10.11-asan-ubsan/sql/mysqld.cc:6047

    #10 0x5589c63b8931 in main /data/bld/10.11-asan-ubsan/sql/main.cc:34

    #11 0x7ff35fa46249 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58

SUMMARY: AddressSanitizer: heap-use-after-free /usr/include/c++/12/bits/atomic_base.h:488 in std::__atomic_base<int>::load(std::memory_order) const

Shadow bytes around the buggy address:

  0x0c588000ece0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ecf0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed00: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed10: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed20: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

=>0x0c588000ed30: fd fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd

  0x0c588000ed40: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed50: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed60: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed70: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

  0x0c588000ed80: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd

Shadow byte legend (one shadow byte represents 8 application bytes):

  Addressable:           00

  Partially addressable: 01 02 03 04 05 06 07 

  Heap left redzone:       fa

  Freed heap region:       fd

  Stack left redzone:      f1

  Stack mid redzone:       f2

  Stack right redzone:     f3

  Stack after return:      f5

  Stack use after scope:   f8

  Global redzone:          f9

  Global init order:       f6

  Poisoned by user:        f7

  Container overflow:      fc

  Array cookie:            ac

  Intra object redzone:    bb

  ASan internal:           fe

  Left alloca redzone:     ca

  Right alloca redzone:    cb

==344864==ABORTING