handle_fatal_signal (sig=11) in __strlen_avx2 on START SLAVE | Assertion `global_system_variables.session_track_system_variables' failed in Session_sysvars_tracker::init | *** buffer overflow detected *** (on optimized builds)

CHANGE MASTER TO MASTER_HOST='h', MASTER_USER='u';

SET @@GLOBAL.session_track_system_variables=NULL;

START SLAVE IO_THREAD;

Core was generated by `/data/MD020420-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 0x7f2c18bea700 (LWP 2364))]

(gdb) bt

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

#1  0x00005559193b1d47 in my_write_core (sig=sig@entry=11) at /data/10.5_opt/mysys/stacktrace.c:518

#2  0x0000555918d7387a in handle_fatal_signal (sig=11) at /data/10.5_opt/sql/signal_handler.cc:325

#3  <signal handler called>

#4  __strlen_avx2 () at ../sysdeps/x86_64/multiarch/strlen-avx2.S:62

#5  0x00005559193ae49c in my_strdup (key=key@entry=0, from=0x0, my_flags=my_flags@entry=65552) at /data/10.5_opt/mysys/my_malloc.c:228

#6  0x0000555918acc766 in Session_sysvars_tracker::init (this=<optimized out>, thd=0x7f2bbdc12018) at /data/10.5_opt/sql/session_tracker.cc:330

#7  0x0000555918b9018b in plugin_thdvar_init (thd=thd@entry=0x7f2bbdc12018) at /data/10.5_opt/sql/sql_plugin.cc:3216

#8  0x0000555918b3225c in THD::init (this=this@entry=0x7f2bbdc12018) at /data/10.5_opt/sql/sql_class.cc:1248

#9  0x0000555918b375d9 in THD::THD (this=0x7f2bbdc12018, id=<optimized out>, is_wsrep_applier=<optimized out>) at /data/10.5_opt/sql/sql_class.cc:844

#10 0x0000555918ade8c7 in handle_slave_io (arg=arg@entry=0x7f2bf77f4000) at /data/10.5_opt/sql/slave.cc:4727

#11 0x0000555918fd99da in pfs_spawn_thread (arg=0x7f2beac62218) at /data/10.5_opt/storage/perfschema/pfs.cc:2201

#12 0x00007f2c1805c6db in start_thread (arg=0x7f2c18bea700) at pthread_create.c:463

#13 0x00007f2c1745a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95