Sig 11 in row_make_new_pathname | RENAME TABLE after DISCARD TABLESPACE

USE test;

CREATE TABLE t (a INT) ENGINE=INNODB;

ALTER TABLE t DISCARD TABLESPACE;

RENAME TABLE t TO t2;

Core was generated by `/data/git/MD180320-mariadb-10.5.2-linux-x86_64-opt/bin/mysqld --no-defaults --c'.

Program terminated with signal SIGSEGV, Segmentation fault.

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11)

    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 0x7f6f781e6700 (LWP 27610))]

(gdb) bt

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11)

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

#1  0x00005634c8393877 in my_write_core (sig=sig@entry=11) at /data/git/10.5_opt/mysys/stacktrace.c:518

#2  0x00005634c7d5215a in handle_fatal_signal (sig=11) at /data/git/10.5_opt/sql/signal_handler.cc:325

#3  <signal handler called>

#4  row_make_new_pathname (table=table@entry=0x7f6f49891300, 

    new_name=new_name@entry=0x7f6f781e3bf0 "test/t2")

    at /data/git/10.5_opt/storage/innobase/row/row0merge.cc:4251

#5  0x00005634c814bbf7 in row_rename_table_for_mysql (old_name=old_name@entry=0x7f6f781e3df0 "test/t", 

    new_name=<optimized out>, new_name@entry=0x7f6f781e3bf0 "test/t2", trx=trx@entry=0x7f6f61c03218, 

    commit=commit@entry=true, use_fk=use_fk@entry=true)

    at /data/git/10.5_opt/storage/innobase/row/row0mysql.cc:4326

#6  0x00005634c80796a3 in innobase_rename_table (use_fk=true, commit=true, to=0x7f6f781e4810 "./test/t2", 

    from=0x7f6f781e4600 "./test/t", trx=0x7f6f61c03218)

    at /data/git/10.5_opt/storage/innobase/handler/ha_innodb.cc:13683

#7  ha_innobase::rename_table (this=<optimized out>, from=0x7f6f781e4600 "./test/t", 

    to=0x7f6f781e4810 "./test/t2") at /data/git/10.5_opt/storage/innobase/handler/ha_innodb.cc:13874

#8  0x00005634c7bece82 in mysql_rename_table (base=<optimized out>, old_db=old_db@entry=0x7f6f49847150, 

    old_name=old_name@entry=0x7f6f781e4ec0, new_db=new_db@entry=0x7f6f49847830, 

    new_name=new_name@entry=0x7f6f781e4ed0, flags=flags@entry=0)

    at /data/git/10.5_opt/sql/sql_table.cc:5563

#9  0x00005634c7b7cab5 in do_rename (skip_error=false, new_table_alias=0x7f6f49847860, 

    new_table_name=0x7f6f49847840, new_db=0x7f6f49847830, ren_table=0x7f6f49847138, thd=0x7f6f49812018)

    at /data/git/10.5_opt/sql/sql_rename.cc:301

#10 rename_tables (thd=thd@entry=0x7f6f49812018, table_list=table_list@entry=0x7f6f49847138, 

    skip_error=skip_error@entry=false) at /data/git/10.5_opt/sql/sql_rename.cc:384

#11 0x00005634c7b7ced5 in mysql_rename_tables (thd=thd@entry=0x7f6f49812018, 

    table_list=table_list@entry=0x7f6f49847138, silent=silent@entry=false)

    at /data/git/10.5_opt/sql/sql_rename.cc:154

#12 0x00005634c7b5e946 in mysql_execute_command (thd=thd@entry=0x7f6f49812018)

    at /data/git/10.5_opt/sql/sql_parse.cc:4275

#13 0x00005634c7b650bc in mysql_parse (thd=thd@entry=0x7f6f49812018, rawbuf=<optimized out>, length=20, 

    parser_state=parser_state@entry=0x7f6f781e54d0, is_com_multi=is_com_multi@entry=false, 

    is_next_command=is_next_command@entry=false) at /data/git/10.5_opt/sql/sql_parse.cc:7926

#14 0x00005634c7b5a049 in dispatch_command (command=command@entry=COM_QUERY, 

    thd=thd@entry=0x7f6f49812018, packet=packet@entry=0x7f6f4983a019 "RENAME TABLE t TO t2", 

    packet_length=packet_length@entry=20, is_com_multi=is_com_multi@entry=false, 

    is_next_command=is_next_command@entry=false) at /data/git/10.5_opt/sql/sql_parse.cc:1839

#15 0x00005634c7b583c0 in do_command (thd=0x7f6f49812018) at /data/git/10.5_opt/sql/sql_parse.cc:1358

#16 0x00005634c7c4c3ae in do_handle_one_connection (connect=<optimized out>, 

    connect@entry=0x7f6f754328f8, put_in_cache=put_in_cache@entry=true)

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

#17 0x00005634c7c4c554 in handle_one_connection (arg=arg@entry=0x7f6f754328f8)

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

#18 0x00005634c7fbb02a in pfs_spawn_thread (arg=0x7f6f7544b018)

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

#19 0x00007f6f76c996db in start_thread (arg=0x7f6f781e6700) at pthread_create.c:463

#20 0x00007f6f7609788f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95