ASAN use-after-poison in json_normalize_number/json_norm_value_number_init

--source include/have_innodb.inc 

CREATE TABLE t1 ( i longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_bin) engine=innodb;

INSERT INTO t1 VALUES ('2007'), ('2003'), ('2009'), ('2007');

SELECT JSON_NORMALIZE( i ) FROM t1;

Version: '11.0.1-MariaDB-debug-log'  socket: '/git/10.11/mysql-test/var/tmp/mysqld.1.sock'  port: 16000  Source distribution

=================================================================

==931795==ERROR: AddressSanitizer: use-after-poison on address 0x6290002da2a4 at pc 0x560fe21c97a8 bp 0x7f82ad181d50 sp 0x7f82ad181d40

READ of size 1 at 0x6290002da2a4 thread T14

    #0 0x560fe21c97a7 in json_normalize_number /git/10.11/strings/json_normalize.c:151

    #1 0x560fe21cb10f in json_norm_value_number_init /git/10.11/strings/json_normalize.c:517

    #2 0x560fe21cb403 in json_norm_value_init /git/10.11/strings/json_normalize.c:586

    #3 0x560fe21cc676 in json_norm_build /git/10.11/strings/json_normalize.c:771

    #4 0x560fe21ccb4b in json_normalize /git/10.11/strings/json_normalize.c:835

    #5 0x560fe096a692 in Item_func_json_normalize::val_str(String*) /git/10.11/sql/item_jsonfunc.cc:4252

    #6 0x560fe09f2b37 in Type_handler::Item_send_str(Item*, Protocol*, st_value*) const /git/10.11/sql/sql_type.cc:7454

    #7 0x560fe07b8643 in Type_handler_string_result::Item_send(Item*, Protocol*, st_value*) const /git/10.11/sql/sql_type.h:5438

    #8 0x560fdff9421b in Item::send(Protocol*, st_value*) /git/10.11/sql/item.h:1235

    #9 0x560fe005354e in Protocol::send_result_set_row(List<Item>*) /git/10.11/sql/protocol.cc:1332

    #10 0x560fe02050dd in select_send::send_data(List<Item>&) /git/10.11/sql/sql_class.cc:3102

    #11 0x560fe0534fd4 in select_result_sink::send_data_with_check(List<Item>&, st_select_lex_unit*, unsigned long long) /git/10.11/sql/sql_class.h:5725

    #12 0x560fe04ef0d3 in end_send /git/10.11/sql/sql_select.cc:23976

    #13 0x560fe04e6ec3 in evaluate_join_record /git/10.11/sql/sql_select.cc:22943

    #14 0x560fe04e5738 in sub_select(JOIN*, st_join_table*, bool) /git/10.11/sql/sql_select.cc:22710

    #15 0x560fe04e34b9 in do_select /git/10.11/sql/sql_select.cc:22242

    #16 0x560fe0464c53 in JOIN::exec_inner() /git/10.11/sql/sql_select.cc:4870

    #17 0x560fe0462153 in JOIN::exec() /git/10.11/sql/sql_select.cc:4648

    #18 0x560fe04666c2 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /git/10.11/sql/sql_select.cc:5128

    #19 0x560fe04365c6 in handle_select(THD*, LEX*, select_result*, unsigned long long) /git/10.11/sql/sql_select.cc:609

    #20 0x560fe0359aa1 in execute_sqlcom_select /git/10.11/sql/sql_parse.cc:6263

    #21 0x560fe034839a in mysql_execute_command(THD*, bool) /git/10.11/sql/sql_parse.cc:3947

    #22 0x560fe036483b in mysql_parse(THD*, char*, unsigned int, Parser_state*) /git/10.11/sql/sql_parse.cc:7998

    #23 0x560fe033aaf7 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /git/10.11/sql/sql_parse.cc:1894

    #24 0x560fe0337833 in do_command(THD*, bool) /git/10.11/sql/sql_parse.cc:1407

    #25 0x560fe0800c32 in do_handle_one_connection(CONNECT*, bool) /git/10.11/sql/sql_connect.cc:1415

    #26 0x560fe080058f in handle_one_connection /git/10.11/sql/sql_connect.cc:1317

    #27 0x560fe1437abd in pfs_spawn_thread /git/10.11/storage/perfschema/pfs.cc:2201

    #28 0x7f82bda64608 in start_thread /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477

    #29 0x7f82bd635132 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x11f132)

0x6290002da2a4 is located 164 bytes inside of 16536-byte region [0x6290002da200,0x6290002de298)

allocated by thread T14 here:

    #0 0x7f82bdff1808 in __interceptor_malloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cc:144

    #1 0x560fe1696560 in ut_allocator<unsigned char, true>::allocate(unsigned long, unsigned char const*, unsigned int, bool, bool) /git/10.11/storage/innobase/include/ut0new.h:375

    #2 0x560fe18802d3 in mem_heap_create_block_func(mem_block_info_t*, unsigned long, char const*, unsigned int, unsigned long) /git/10.11/storage/innobase/mem/mem0mem.cc:277

    #3 0x560fe1a61f52 in mem_heap_create_func /git/10.11/storage/innobase/include/mem0mem.inl:377

    #4 0x560fe1a78497 in row_sel_store_mysql_field /git/10.11/storage/innobase/row/row0sel.cc:3089

    #5 0x560fe1a795b2 in row_sel_store_mysql_rec /git/10.11/storage/innobase/row/row0sel.cc:3235

    #6 0x560fe1a892a2 in row_search_mvcc(unsigned char*, page_cur_mode_t, row_prebuilt_t*, unsigned long, unsigned long) /git/10.11/storage/innobase/row/row0sel.cc:5681

    #7 0x560fe163eb21 in ha_innobase::index_read(unsigned char*, unsigned char const*, unsigned int, ha_rkey_function) /git/10.11/storage/innobase/handler/ha_innodb.cc:9006

    #8 0x560fe1641b2d in ha_innobase::index_first(unsigned char*) /git/10.11/storage/innobase/handler/ha_innodb.cc:9361

    #9 0x560fe16420bd in ha_innobase::rnd_next(unsigned char*) /git/10.11/storage/innobase/handler/ha_innodb.cc:9454

    #10 0x560fe0c5f54c in handler::ha_rnd_next(unsigned char*) /git/10.11/sql/handler.cc:3562

    #11 0x560fe00614a0 in rr_sequential(READ_RECORD*) /git/10.11/sql/records.cc:514

    #12 0x560fe002ce67 in READ_RECORD::read_record() /git/10.11/sql/records.h:81

    #13 0x560fe04ec990 in join_init_read_record(st_join_table*) /git/10.11/sql/sql_select.cc:23734

    #14 0x560fe04e557c in sub_select(JOIN*, st_join_table*, bool) /git/10.11/sql/sql_select.cc:22707

    #15 0x560fe04e34b9 in do_select /git/10.11/sql/sql_select.cc:22242

    #16 0x560fe0464c53 in JOIN::exec_inner() /git/10.11/sql/sql_select.cc:4870

    #17 0x560fe0462153 in JOIN::exec() /git/10.11/sql/sql_select.cc:4648

    #18 0x560fe04666c2 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /git/10.11/sql/sql_select.cc:5128

    #19 0x560fe04365c6 in handle_select(THD*, LEX*, select_result*, unsigned long long) /git/10.11/sql/sql_select.cc:609

    #20 0x560fe0359aa1 in execute_sqlcom_select /git/10.11/sql/sql_parse.cc:6263

    #21 0x560fe034839a in mysql_execute_command(THD*, bool) /git/10.11/sql/sql_parse.cc:3947

    #22 0x560fe036483b in mysql_parse(THD*, char*, unsigned int, Parser_state*) /git/10.11/sql/sql_parse.cc:7998

    #23 0x560fe033aaf7 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool) /git/10.11/sql/sql_parse.cc:1894

    #24 0x560fe0337833 in do_command(THD*, bool) /git/10.11/sql/sql_parse.cc:1407

    #25 0x560fe0800c32 in do_handle_one_connection(CONNECT*, bool) /git/10.11/sql/sql_connect.cc:1415

    #26 0x560fe080058f in handle_one_connection /git/10.11/sql/sql_connect.cc:1317

    #27 0x560fe1437abd in pfs_spawn_thread /git/10.11/storage/perfschema/pfs.cc:2201

    #28 0x7f82bda64608 in start_thread /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477

Thread T14 created by T0 here:

    #0 0x7f82bdf1e815 in __interceptor_pthread_create ../../../../src/libsanitizer/asan/asan_interceptors.cc:208

    #1 0x560fe143369a in my_thread_create /git/10.11/storage/perfschema/my_thread.h:52

    #2 0x560fe1437eb0 in pfs_spawn_thread_v1 /git/10.11/storage/perfschema/pfs.cc:2252

    #3 0x560fdff6ad28 in inline_mysql_thread_create /git/10.11/include/mysql/psi/mysql_thread.h:1139

    #4 0x560fdff8313d in create_thread_to_handle_connection(CONNECT*) /git/10.11/sql/mysqld.cc:6106

    #5 0x560fdff837b9 in create_new_thread(CONNECT*) /git/10.11/sql/mysqld.cc:6165

    #6 0x560fdff83b26 in handle_accepted_socket(st_mysql_socket, st_mysql_socket) /git/10.11/sql/mysqld.cc:6227

    #7 0x560fdff8451c in handle_connections_sockets() /git/10.11/sql/mysqld.cc:6351

    #8 0x560fdff8294a in mysqld_main(int, char**) /git/10.11/sql/mysqld.cc:6001

    #9 0x560fdff6a04c in main /git/10.11/sql/main.cc:34

    #10 0x7f82bd53a082 in __libc_start_main ../csu/libc-start.c:308

SUMMARY: AddressSanitizer: use-after-poison /git/10.11/strings/json_normalize.c:151 in json_normalize_number

Shadow bytes around the buggy address:

  0x0c5280053400: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

  0x0c5280053410: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

  0x0c5280053420: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

  0x0c5280053430: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa

  0x0c5280053440: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

=>0x0c5280053450: 00 00 00 f7[04]f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7

  0x0c5280053460: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7

  0x0c5280053470: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7

  0x0c5280053480: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7

  0x0c5280053490: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7

  0x0c52800534a0: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7

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

  Shadow gap:              cc

==931795==ABORTING