Assertion `store.length() <= (256L*256L*256L-1)' failed in net_send_ok

SET SESSION session_track_user_variables=1;

SET @inserted_value=REPEAT(1,16777180);  # Only crashes when >=16777180 (max = 16777216)

mysqld: /test/10.5_dbg/sql/protocol.cc:285: bool net_send_ok(THD*, uint, uint, ulonglong, ulonglong, const char*, bool, bool): Assertion `store.length() <= (256L*256L*256L-1)' failed.

Core was generated by `/test/MD260520-mariadb-10.5.4-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

[Current thread is 1 (Thread 0x148e2cc38700 (LWP 3878224))]

(gdb) bt

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:57

#1  0x0000565006e45d7a in my_write_core (sig=sig@entry=6) at /test/10.5_dbg/mysys/stacktrace.c:518

#2  0x00005650065eb385 in handle_fatal_signal (sig=6) at /test/10.5_dbg/sql/signal_handler.cc:330

#3  <signal handler called>

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

#5  0x0000148e2b37c801 in __GI_abort () at abort.c:79

#6  0x0000148e2b36c39a in __assert_fail_base (fmt=0x148e2b4f37d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x565006f9ca50 "store.length() <= (256L*256L*256L-1)", file=file@entry=0x565006f9c540 "/test/10.5_dbg/sql/protocol.cc", line=line@entry=285, function=function@entry=0x565006f9d820 <net_send_ok(THD*, unsigned int, unsigned int, unsigned long long, unsigned long long, char const*, bool, bool)::__PRETTY_FUNCTION__> "bool net_send_ok(THD*, uint, uint, ulonglong, ulonglong, const char*, bool, bool)") at assert.c:92

#7  0x0000148e2b36c412 in __GI___assert_fail (assertion=assertion@entry=0x565006f9ca50 "store.length() <= (256L*256L*256L-1)", file=file@entry=0x565006f9c540 "/test/10.5_dbg/sql/protocol.cc", line=line@entry=285, function=function@entry=0x565006f9d820 <net_send_ok(THD*, unsigned int, unsigned int, unsigned long long, unsigned long long, char const*, bool, bool)::__PRETTY_FUNCTION__> "bool net_send_ok(THD*, uint, uint, ulonglong, ulonglong, const char*, bool, bool)") at assert.c:101

#8  0x000056500624f222 in net_send_ok (thd=0x148e0a015088, server_status=server_status@entry=16386, statement_warn_count=statement_warn_count@entry=0, affected_rows=affected_rows@entry=0, id=id@entry=0, message=<optimized out>, message@entry=0x148e0a01abab "", is_eof=false, skip_flush=false) at /test/10.5_dbg/sql/protocol.cc:285

#9  0x000056500624f3fa in Protocol::send_ok (this=0x148e0a015650, server_status=16386, statement_warn_count=0, affected_rows=0, last_insert_id=0, message=0x148e0a01abab "", skip_flush=false) at /test/10.5_dbg/sql/protocol.cc:643

#10 0x000056500624fd52 in Protocol::end_statement (this=0x148e0a015650) at /test/10.5_dbg/sql/protocol.cc:606

#11 0x000056500633cbc1 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x148e0a015088, packet=<optimized out>, packet@entry=0x148e0a067089 "SET @inserted_value=REPEAT(1,16777180)", packet_length=<optimized out>, packet_length@entry=38, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.5_dbg/sql/sql_parse.cc:2467

#12 0x000056500633931c in do_command (thd=0x148e0a015088) at /test/10.5_dbg/sql/sql_parse.cc:1355

#13 0x000056500649373f in do_handle_one_connection (connect=<optimized out>, connect@entry=0x148e0b8453a8, put_in_cache=put_in_cache@entry=true) at /test/10.5_dbg/sql/sql_connect.cc:1411

#14 0x0000565006493e5b in handle_one_connection (arg=arg@entry=0x148e0b8453a8) at /test/10.5_dbg/sql/sql_connect.cc:1313

#15 0x00005650068f314e in pfs_spawn_thread (arg=0x148e2a845888) at /test/10.5_dbg/storage/perfschema/pfs.cc:2201

#16 0x0000148e2c05f6db in start_thread (arg=0x148e2cc38700) at pthread_create.c:463

#17 0x0000148e2b45d88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95