Long function name crashes MariaDB 10.1 to 10.5 (debug) | Assertion `strlen(name_arg) <= (64*3)' failed in MDL_key::mdl_key_init

DROP FUNCTION a123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012;

DROP FUNCTION 0111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffffgggggggggghhhhhhhhhhiiiiiiiiiijjjjjjjjjjkk;

USE test;

DROP FUNCTION f111111111122222222223333333333444444444455555555556666666666777777777788888888889999999999aaaaaaaaaabbbbbbbbbbccccccccccddddddddddeeeeeeeeeeffffffffffgggggggggghhhhhhhhhhiiiiiiiiiijjjjjjjjjjkk;

mysqld: /data/git/10.5_dbg/sql/mdl.h:426: void MDL_key::mdl_key_init(MDL_key::enum_mdl_namespace, const char*, const char*): Assertion `strlen(name_arg) <= (64*3)' failed.

Core was generated by `/data/MD180320-mariadb-10.5.2-linux-x86_64-dbg/bin/mysqld --no-defaults --core-'.

Program terminated with signal SIGABRT, Aborted.

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6)

    at ../sysdeps/unix/sysv/linux/pthread_kill.c:57

57	../sysdeps/unix/sysv/linux/pthread_kill.c: No such file or directory.

[Current thread is 1 (Thread 0x7f6054a03700 (LWP 28433))]

(gdb) bt

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6)

    at ../sysdeps/unix/sysv/linux/pthread_kill.c:57

#1  0x000055eeb83597d4 in my_write_core (sig=sig@entry=6) at /data/git/10.5_dbg/mysys/stacktrace.c:518

#2  0x000055eeb7b02b5f in handle_fatal_signal (sig=6) at /data/git/10.5_dbg/sql/signal_handler.cc:325

#3  <signal handler called>

#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51

#5  0x00007f6053147801 in __GI_abort () at abort.c:79

#6  0x00007f605313739a in __assert_fail_base (

    fmt=0x7f60532be7d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", 

    assertion=assertion@entry=0x55eeb84ef27e "strlen(name_arg) <= (64*3)", 

    file=file@entry=0x55eeb84be056 "/data/git/10.5_dbg/sql/mdl.h", line=line@entry=426, 

    function=function@entry=0x55eeb8508f20 <_ZZN7MDL_key12mdl_key_initENS_18enum_mdl_namespaceEPKcS2_E19__PRETTY_FUNCTION__> "void MDL_key::mdl_key_init(MDL_key::enum_mdl_namespace, const char*, const char*)")

    at assert.c:92

#7  0x00007f6053137412 in __GI___assert_fail (

    assertion=assertion@entry=0x55eeb84ef27e "strlen(name_arg) <= (64*3)", 

    file=file@entry=0x55eeb84be056 "/data/git/10.5_dbg/sql/mdl.h", line=line@entry=426, 

    function=function@entry=0x55eeb8508f20 <_ZZN7MDL_key12mdl_key_initENS_18enum_mdl_namespaceEPKcS2_E19__PRETTY_FUNCTION__> "void MDL_key::mdl_key_init(MDL_key::enum_mdl_namespace, const char*, const char*)")

    at assert.c:101

#8  0x000055eeb79b7e09 in MDL_key::mdl_key_init (

    name_arg=0x7f6027c74400 "a123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012", db=0x7f6027c744c8 "test", mdl_namespace_arg=MDL_key::FUNCTION, this=0x7f6054a01730)

    at /data/git/10.5_dbg/sql/mdl.h:426

#9  MDL_request::init_with_source (this=this@entry=0x7f6054a01710, 

    mdl_namespace=mdl_namespace@entry=MDL_key::FUNCTION, db_arg=<optimized out>,

    db_arg@entry=0x7f6027c744c8 "test", name_arg=<optimized out>, 

    name_arg@entry=0x7f6027c74400 "a123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012", mdl_type_arg=mdl_type_arg@entry=MDL_EXCLUSIVE, 

    mdl_duration_arg=mdl_duration_arg@entry=MDL_TRANSACTION, 

    src_file=0x55eeb868d960 "/data/git/10.5_dbg/sql/lock.cc", src_line=927)

    at /data/git/10.5_dbg/sql/mdl.cc:978

#10 0x000055eeb7c4cd5d in lock_object_name (thd=thd@entry=0x7f6027c15088, mdl_type=MDL_key::FUNCTION, 

    db=0x7f6027c744c8 "test", 

    name=0x7f6027c74400 "a123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012") at /data/git/10.5_dbg/sql/lock.cc:926

#11 0x000055eeb7cae405 in Sp_handler::sp_drop_routine (

    this=this@entry=0x55eeb8ffe908 <sp_handler_function>, thd=thd@entry=0x7f6027c15088, 

    name=0x7f6027c744d0) at /data/git/10.5_dbg/sql/sp.cc:1578

#12 0x000055eeb7864b27 in drop_routine (thd=thd@entry=0x7f6027c15088, lex=lex@entry=0x7f6027c18fc8)

    at /data/git/10.5_dbg/sql/sql_parse.cc:6462

#13 0x000055eeb786020a in mysql_execute_command (thd=thd@entry=0x7f6027c15088)

    at /data/git/10.5_dbg/sql/sql_parse.cc:5643

#14 0x000055eeb78687a5 in mysql_parse (thd=thd@entry=0x7f6027c15088, rawbuf=<optimized out>, 

    length=<optimized out>, parser_state=parser_state@entry=0x7f6054a02450, 

    is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false)

    at /data/git/10.5_dbg/sql/sql_parse.cc:7926

#15 0x000055eeb7854664 in dispatch_command (command=command@entry=COM_QUERY, 

    thd=thd@entry=0x7f6027c15088, 

    packet=packet@entry=0x7f6027c67089 "drop function a12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345"..., packet_length=packet_length@entry=207, 

    is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false)

    at /data/git/10.5_dbg/sql/sql_parse.cc:1839

#16 0x000055eeb7852eaf in do_command (thd=0x7f6027c15088) at /data/git/10.5_dbg/sql/sql_parse.cc:1358

#17 0x000055eeb79aca09 in do_handle_one_connection (connect=<optimized out>, 

    connect@entry=0x7f6030e2b3a8, put_in_cache=put_in_cache@entry=true)

    at /data/git/10.5_dbg/sql/sql_connect.cc:1422

#18 0x000055eeb79acd38 in handle_one_connection (arg=arg@entry=0x7f6030e2b3a8)

    at /data/git/10.5_dbg/sql/sql_connect.cc:1319

#19 0x000055eeb7e09cfc in pfs_spawn_thread (arg=0x7f6052445888)

    at /data/git/10.5_dbg/storage/perfschema/pfs.cc:2201

#20 0x00007f6053e2a6db in start_thread (arg=0x7f6054a03700) at pthread_create.c:463

#21 0x00007f605322888f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95