ASAN use-after-poison in Field_bit::key_cmp / TABLE::check_period_overlaps

CREATE TABLE t1 (s DATE, e DATE, b BIT, PERIOD FOR p(s,e), UNIQUE(b, p WITHOUT OVERLAPS)) ENGINE=MyISAM;

INSERT INTO t1 VALUES ('2024-12-21','2034-06-29',0), ('2024-12-21','2034-06-29',1);

--error ER_DUP_ENTRY

UPDATE t1 SET b = 1;

# Cleanup

DROP TABLE t1;

==11631==ERROR: AddressSanitizer: use-after-poison on address 0x619000096e78 at pc 0x5606ff749c61 bp 0x7f59520cdfc0 sp 0x7f59520cdfb8

READ of size 1 at 0x619000096e78 thread T5

    #0 0x5606ff749c60 in Field_bit::key_cmp(unsigned char const*, unsigned int) const /data/src/10.5/sql/field.cc:9691

    #1 0x5606ff3b414b in Field_bit::cmp(unsigned char const*, unsigned char const*) const /data/src/10.5/sql/field.h:4828

    #2 0x5606ff345967 in TABLE::check_period_overlaps(st_key const&, unsigned char const*, unsigned char const*) /data/src/10.5/sql/table.cc:8693

    #3 0x5606ff7ba946 in handler::ha_check_overlaps(unsigned char const*, unsigned char const*) /data/src/10.5/sql/handler.cc:6859

    #4 0x5606ff7bc9ca in handler::ha_update_row(unsigned char const*, unsigned char const*) /data/src/10.5/sql/handler.cc:7024

    #5 0x5606ff2e0382 in mysql_update(THD*, TABLE_LIST*, List<Item>&, List<Item>&, Item*, unsigned int, st_order*, unsigned long long, bool, unsigned long long*, unsigned long long*) /data/src/10.5/sql/sql_update.cc:1059

    #6 0x5606ff046e9d in mysql_execute_command(THD*) /data/src/10.5/sql/sql_parse.cc:4370

    #7 0x5606ff05d9fa in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.5/sql/sql_parse.cc:7957

    #8 0x5606ff038497 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.5/sql/sql_parse.cc:1840

    #9 0x5606ff035487 in do_command(THD*) /data/src/10.5/sql/sql_parse.cc:1359

    #10 0x5606ff3ec5f5 in do_handle_one_connection(CONNECT*, bool) /data/src/10.5/sql/sql_connect.cc:1411

    #11 0x5606ff3ec064 in handle_one_connection /data/src/10.5/sql/sql_connect.cc:1313

    #12 0x5606fffcceb6 in pfs_spawn_thread /data/src/10.5/storage/perfschema/pfs.cc:2201

    #13 0x7f595c9184a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x74a3)

    #14 0x7f595aa4cd0e in __clone (/lib/x86_64-linux-gnu/libc.so.6+0xe8d0e)

0x619000096e78 is located 1016 bytes inside of 1124-byte region [0x619000096a80,0x619000096ee4)

allocated by thread T5 here:

    #0 0x7f595cbefd28 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.3+0xc1d28)

    #1 0x560700adfbfb in sf_malloc /data/src/10.5/mysys/safemalloc.c:118

    #2 0x560700ab0dc3 in my_malloc /data/src/10.5/mysys/my_malloc.c:88

    #3 0x560700a91335 in alloc_root /data/src/10.5/mysys/my_alloc.c:243

    #4 0x560700a9192e in multi_alloc_root /data/src/10.5/mysys/my_alloc.c:316

    #5 0x5606ff3207a0 in copy_keys_from_share(TABLE*, st_mem_root*) /data/src/10.5/sql/table.cc:3784

    #6 0x5606ff322276 in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /data/src/10.5/sql/table.cc:3987

    #7 0x5606feecc420 in open_table(THD*, TABLE_LIST*, Open_table_context*) /data/src/10.5/sql/sql_base.cc:1984

    #8 0x5606feed4a3f in open_and_process_table /data/src/10.5/sql/sql_base.cc:3736

    #9 0x5606feed707e in open_tables(THD*, DDL_options_st const&, TABLE_LIST**, unsigned int*, unsigned int, Prelocking_strategy*) /data/src/10.5/sql/sql_base.cc:4210

    #10 0x5606feedbdd6 in open_and_lock_tables(THD*, DDL_options_st const&, TABLE_LIST*, bool, unsigned int, Prelocking_strategy*) /data/src/10.5/sql/sql_base.cc:5112

    #11 0x5606fee4630b in open_and_lock_tables(THD*, TABLE_LIST*, bool, unsigned int) /data/src/10.5/sql/sql_base.h:510

    #12 0x5606fef91020 in mysql_insert(THD*, TABLE_LIST*, List<Item>&, List<List<Item> >&, List<Item>&, List<Item>&, enum_duplicates, bool, select_result*) /data/src/10.5/sql/sql_insert.cc:756

    #13 0x5606ff047cd8 in mysql_execute_command(THD*) /data/src/10.5/sql/sql_parse.cc:4515

    #14 0x5606ff05d9fa in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /data/src/10.5/sql/sql_parse.cc:7957

    #15 0x5606ff038497 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /data/src/10.5/sql/sql_parse.cc:1840

    #16 0x5606ff035487 in do_command(THD*) /data/src/10.5/sql/sql_parse.cc:1359

    #17 0x5606ff3ec5f5 in do_handle_one_connection(CONNECT*, bool) /data/src/10.5/sql/sql_connect.cc:1411

    #18 0x5606ff3ec064 in handle_one_connection /data/src/10.5/sql/sql_connect.cc:1313

    #19 0x5606fffcceb6 in pfs_spawn_thread /data/src/10.5/storage/perfschema/pfs.cc:2201

    #20 0x7f595c9184a3 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x74a3)

Thread T5 created by T0 here:

    #0 0x7f595cb5ef59 in __interceptor_pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.3+0x30f59)

    #1 0x5606fffc7f78 in my_thread_create /data/src/10.5/storage/perfschema/my_thread.h:34

    #2 0x5606fffcd2a5 in pfs_spawn_thread_v1 /data/src/10.5/storage/perfschema/pfs.cc:2252

    #3 0x5606fed80dd7 in inline_mysql_thread_create /data/src/10.5/include/mysql/psi/mysql_thread.h:1321

    #4 0x5606fed93b09 in create_thread_to_handle_connection(CONNECT*) /data/src/10.5/sql/mysqld.cc:5952

    #5 0x5606fed9407e in create_new_thread(CONNECT*) /data/src/10.5/sql/mysqld.cc:6011

    #6 0x5606fed9423b in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /data/src/10.5/sql/mysqld.cc:6076

    #7 0x5606fed94c1e in handle_connections_sockets() /data/src/10.5/sql/mysqld.cc:6203

    #8 0x5606fed9346f in mysqld_main(int, char**) /data/src/10.5/sql/mysqld.cc:5621

    #9 0x5606fed7f5cf in main /data/src/10.5/sql/main.cc:25

    #10 0x7f595a9842e0 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x202e0)

SUMMARY: AddressSanitizer: use-after-poison /data/src/10.5/sql/field.cc:9691 in Field_bit::key_cmp(unsigned char const*, unsigned int) const

Shadow bytes around the buggy address:

  0x0c328000ad70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

  0x0c328000ad80: 00 00 00 00 00 00 00 00 00 f7 00 00 f7 02 f7 04

  0x0c328000ad90: f7 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

  0x0c328000ada0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

  0x0c328000adb0: 00 00 00 00 00 00 00 00 00 f7 02 f7 04 f7 00 00

=>0x0c328000adc0: 00 00 00 00 f7 00 00 00 04 f7 00 00 f7 00 00[f7]

  0x0c328000add0: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 04 fa fa fa

  0x0c328000ade0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

  0x0c328000adf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

  0x0c328000ae00: 00 00 00 00 f7 03 f7 07 07 07 f7 00 00 00 00 f7

  0x0c328000ae10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

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

  Heap right redzone:      fb

  Freed heap region:       fd

  Stack left redzone:      f1

  Stack mid redzone:       f2

  Stack right redzone:     f3

  Stack partial redzone:   f4

  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

==11631==ABORTING