ASAN stack-buffer-overflow in strxnmov | frm_file_exists

DROP TABLE `##################################################_long`.`#################################################_long`;

==3483292==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x14ecb1bd9dc0 at pc 0x55bb2294c593 bp 0x14ecb1bd8f70 sp 0x14ecb1bd8f60

WRITE of size 1 at 0x14ecb1bd9dc0 thread T30

    #0 0x55bb2294c592 in strxnmov /test/10.5_opt_san/strings/strxnmov.c:71

    #1 0x55bb21487ac6 in frm_file_exists /test/10.5_opt_san/storage/innobase/handler/ha_innodb.cc:13316

    #2 0x55bb21487ac6 in ha_innobase::delete_table(char const*, enum_sql_command) /test/10.5_opt_san/storage/innobase/handler/ha_innodb.cc:13416

    #3 0x55bb1fcf98ff in hton_drop_table /test/10.5_opt_san/sql/handler.cc:561

    #4 0x55bb1fd28bc8 in ha_delete_table(THD*, handlerton*, char const*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, bool) /test/10.5_opt_san/sql/handler.cc:2856

    #5 0x55bb1fd2a065 in delete_table_force /test/10.5_opt_san/sql/handler.cc:5171

    #6 0x55bb1e9f6d80 in plugin_foreach_with_mask(THD*, char (*)(THD*, st_plugin_int*, void*), int, unsigned int, void*) /test/10.5_opt_san/sql/sql_plugin.cc:2553

    #7 0x55bb1fd204b3 in ha_delete_table_force(THD*, char const*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*) /test/10.5_opt_san/sql/handler.cc:5217

    #8 0x55bb1ee78e58 in mysql_rm_table_no_locks(THD*, TABLE_LIST*, bool, bool, bool, bool, bool, bool) /test/10.5_opt_san/sql/sql_table.cc:2601

    #9 0x55bb1ee7e915 in mysql_rm_table(THD*, TABLE_LIST*, bool, bool, bool, bool) /test/10.5_opt_san/sql/sql_table.cc:2164

    #10 0x55bb1e9bc342 in mysql_execute_command(THD*) /test/10.5_opt_san/sql/sql_parse.cc:5072

    #11 0x55bb1e93a8cd in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /test/10.5_opt_san/sql/sql_parse.cc:8203

    #12 0x55bb1e999b87 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /test/10.5_opt_san/sql/sql_parse.cc:1891

    #13 0x55bb1e9a5cd2 in do_command(THD*) /test/10.5_opt_san/sql/sql_parse.cc:1375

    #14 0x55bb1f1c9c28 in do_handle_one_connection(CONNECT*, bool) /test/10.5_opt_san/sql/sql_connect.cc:1415

    #15 0x55bb1f1cc29c in handle_one_connection /test/10.5_opt_san/sql/sql_connect.cc:1317

    #16 0x14ecd8c2b608 in start_thread /build/glibc-SzIz7B/glibc-2.31/nptl/pthread_create.c:477

    #17 0x14ecd7ea0132 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x11f132)

[..]