InnoDB aborts while adding instant column for discarded tablespace | SIGSEGV in mtr_t::set_named_space (on optimized builds)

USE test;

CREATE TABLE t(a INT);

ALTER TABLE t DISCARD TABLESPACE;

ALTER TABLE t ADD COLUMN c INT;

Core was generated by `/test/MD010520-mariadb-10.5.3-linux-x86_64-opt/bin/mysqld --no-defaults --core-'.

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

[Current thread is 1 (Thread 0x7f9b9e076700 (LWP 3236870))]

(gdb) bt

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=11) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57

#1  0x0000561de0b7dac7 in my_write_core (sig=sig@entry=11) at /test/10.5_opt/mysys/stacktrace.c:518

#2  0x0000561de053f7ca in handle_fatal_signal (sig=11) at /test/10.5_opt/sql/signal_handler.cc:329

#3  <signal handler called>

#4  mtr_t::set_named_space (this=0x7f9b9e070870, space=0x0) at /test/10.5_opt/storage/innobase/include/mtr0mtr.h:206

#5  dict_index_t::set_modified (mtr=..., this=0x7f9b6d4d5680) at /test/10.5_opt/storage/innobase/include/dict0mem.h:2286

#6  innobase_instant_try (ha_alter_info=ha_alter_info@entry=0x7f9b9e0716b0, ctx=ctx@entry=0x7f9b6d4486f0, trx=trx@entry=0x7f9b88403200, table=<optimized out>, altered_table=<optimized out>, altered_table=<optimized out>) at /test/10.5_opt/storage/innobase/handler/handler0alter.cc:5797

#7  0x0000561de088694b in commit_try_norebuild (ha_alter_info=0x7f9b9e0716b0, ctx=<optimized out>, altered_table=0x7f9b9e071750, old_table=0x7f9b6d4dee18, trx=<optimized out>, table_name=<optimized out>) at /test/10.5_opt/storage/innobase/handler/handler0alter.cc:10170

#8  0x0000561de087d7dd in ha_innobase::commit_inplace_alter_table (this=<optimized out>, altered_table=<optimized out>, ha_alter_info=<optimized out>, commit=<optimized out>) at /test/10.5_opt/storage/innobase/handler/handler0alter.cc:10890

#9  0x0000561de03e2d29 in mysql_inplace_alter_table (target_mdl_request=0x7f9b9e072510, alter_ctx=0x7f9b9e073a40, inplace_supported=<optimized out>, ha_alter_info=0x7f9b9e0716b0, altered_table=0x7f9b9e071750, table=<optimized out>, table_list=0x7f9b6d447118, thd=0x7f9b6d412018) at /test/10.5_opt/sql/sql_table.cc:7925

#10 mysql_alter_table (thd=thd@entry=0x7f9b6d412018, new_db=new_db@entry=0x7f9b6d416710, new_name=new_name@entry=0x7f9b6d416b18, create_info=create_info@entry=0x7f9b9e074620, table_list=<optimized out>, table_list@entry=0x7f9b6d447118, alter_info=alter_info@entry=0x7f9b9e074550, order_num=0, order=0x0, ignore=false, if_exists=false) at /test/10.5_opt/sql/sql_table.cc:10446

#11 0x0000561de043dca1 in Sql_cmd_alter_table::execute (this=<optimized out>, thd=0x7f9b6d412018) at /test/10.5_opt/sql/sql_alter.cc:520

#12 0x0000561de0349fc0 in mysql_execute_command (thd=thd@entry=0x7f9b6d412018) at /test/10.5_opt/sql/sql_parse.cc:5912

#13 0x0000561de035122c in mysql_parse (thd=0x7f9b6d412018, rawbuf=<optimized out>, length=30, parser_state=0x7f9b9e0754d0, is_com_multi=<optimized out>, is_next_command=<optimized out>) at /test/10.5_opt/sql/sql_parse.cc:7957

#14 0x0000561de0346855 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f9b6d412018, packet=packet@entry=0x7f9b6d43a019 "ALTER TABLE t ADD COLUMN c INT", packet_length=packet_length@entry=30, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_opt/sql/sql_parse.cc:1839

#15 0x0000561de0344ae6 in do_command (thd=0x7f9b6d412018) at /test/10.5_opt/sql/sql_parse.cc:1358

#16 0x0000561de043929e in do_handle_one_connection (connect=<optimized out>, connect@entry=0x7f9b9bc329b8, put_in_cache=put_in_cache@entry=true) at /test/10.5_opt/sql/sql_connect.cc:1422

#17 0x0000561de0439444 in handle_one_connection (arg=arg@entry=0x7f9b9bc329b8) at /test/10.5_opt/sql/sql_connect.cc:1319

#18 0x0000561de07a553a in pfs_spawn_thread (arg=0x7f9b9bc4b018) at /test/10.5_opt/storage/perfschema/pfs.cc:2201

#19 0x00007f9b9d49d6db in start_thread (arg=0x7f9b9e076700) at pthread_create.c:463

#20 0x00007f9b9c89b88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95