Replica server crashes with an invalid pointer when using a user created with the PARSEC plugin for replication

source include/master-slave.inc;

sync_slave_with_master;

install soname 'auth_parsec';

# create a user for replication with PARSEC plugin 

connection master;

install soname 'auth_parsec';

create user rpluser@'%' identified via parsec using PASSWORD('rpl_pass');

grant replication slave on *.* to rpluser@'%';

sync_slave_with_master;

# Set the slave to connect using the user created with the PARSEC plugin for replication

stop slave;

--replace_result $MYSQL_TEST_DIR MYSQL_TEST_DIR

eval change master to

  master_user='rpluser',

  master_password='rpl_pass';

start slave;

#0  __pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ../sysdeps/unix/sysv/linux/pthread_kill.c:56

#1  0x000055748f2adaad in my_write_core (sig=sig@entry=6) at /test/mtest/MDEV-32618/11.6/mysys/stacktrace.c:424

#2  0x000055748eadb41f in handle_fatal_signal (sig=6) at /test/mtest/MDEV-32618/11.6/sql/signal_handler.cc:357

#3  <signal handler called>

#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50

#5  0x0000154212579859 in __GI_abort () at abort.c:79

#6  0x00001542125e426e in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x15421270e298 "%s\n") at ../sysdeps/posix/libc_fatal.c:155

#7  0x00001542125ec2fc in malloc_printerr (str=str@entry=0x15421270c5f5 "realloc(): invalid pointer") at malloc.c:5347

#8  0x00001542125f20ba in __GI___libc_realloc (oldmem=0x1541d4018db8, bytes=bytes@entry=62) at malloc.c:3175

#9  0x00001542100054c8 in auth (vio=0x1541edd0df50, mysql=0x1541d4010268) at /test/mtest/MDEV-32618/11.6/libmariadb/plugins/auth/parsec.c:178

#10 0x000055748ea9c363 in run_plugin_auth (mysql=mysql@entry=0x1541d4010268, data=data@entry=0x1541d4014cf9 "\326\301+\210F\316\353\312{\377\346{\220\225\276(b\310mysql_native_password", 

    data_len=data_len@entry=21, data_plugin=data_plugin@entry=0x1541d4014d0e "ql_native_password", db=db@entry=0x0) at /test/mtest/MDEV-32618/11.6/sql-common/client.c:2563

#11 0x000055748ea9e66e in server_mysql_real_connect (mysql=mysql@entry=0x1541d4010268, host=<optimized out>, host@entry=0x55749286666e "127.0.0.1", user=<optimized out>, user@entry=0x55749286696c "repl_user", 

    passwd=passwd@entry=0x557492866aed "repl_pass", db=db@entry=0x0, port=4401, unix_socket=<optimized out>, client_flag=2147483648) at /test/mtest/MDEV-32618/11.6/sql-common/client.c:3148

#12 0x000055748e6a79b1 in connect_to_master (thd=0x1541d4000f88, mysql=mysql@entry=0x1541d4010268, mi=mi@entry=0x557492865f50, reconnect=reconnect@entry=false, suppress_warnings=suppress_warnings@entry=false)

    at /test/mtest/MDEV-32618/11.6/sql/slave.cc:7269

#13 0x000055748e6ba795 in safe_connect (mi=0x557492865f50, mysql=0x1541d4010268, thd=<optimized out>) at /test/mtest/MDEV-32618/11.6/sql/slave.cc:7203

#14 handle_slave_io (arg=arg@entry=0x557492865f50) at /test/mtest/MDEV-32618/11.6/sql/slave.cc:4865

#15 0x000055748edb66e4 in pfs_spawn_thread (arg=0x5574927a8b28) at /test/mtest/MDEV-32618/11.6/storage/perfschema/pfs.cc:2201

#16 0x0000154212a8a609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#17 0x0000154212676133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95