Assertion `(thd->lex)->var_list.is_empty()' failed in MYSQLparse

SET GLOBAL mc.key_cache_age_threshold = 100, mc.key_cache_block_size = 1024;

mysqld: /data/src/10.3/sql/sql_yacc.yy:15921: int MYSQLparse(THD*): Assertion `(thd->lex)->var_list.is_empty()' failed.

180214 17:39:08 [ERROR] mysqld got signal 6 ;

#7  0x00007fa769f48ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6

#8  0x00005602451abfc8 in MYSQLparse (thd=0x7fa754000b00) at /data/src/10.3/sql/sql_yacc.yy:15921

#9  0x0000560244f6a81d in parse_sql (thd=0x7fa754000b00, parser_state=0x7fa7641b75e0, creation_ctx=0x0, do_pfs_digest=true) at /data/src/10.3/sql/sql_parse.cc:10008

#10 0x0000560244f65ac5 in mysql_parse (thd=0x7fa754000b00, rawbuf=0x7fa754014db0 "SET GLOBAL mc.key_cache_age_threshold = 100, mc.key_cache_block_size = 1024", length=75, parser_state=0x7fa7641b75e0, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:7930

#11 0x0000560244f5349f in dispatch_command (command=COM_QUERY, thd=0x7fa754000b00, packet=0x7fa75400b171 "SET GLOBAL mc.key_cache_age_threshold = 100, mc.key_cache_block_size = 1024", packet_length=75, is_com_multi=false, is_next_command=false) at /data/src/10.3/sql/sql_parse.cc:1825

#12 0x0000560244f51ede in do_command (thd=0x7fa754000b00) at /data/src/10.3/sql/sql_parse.cc:1370

#13 0x00005602450b9e27 in do_handle_one_connection (connect=0x560247dfa540) at /data/src/10.3/sql/sql_connect.cc:1402

#14 0x00005602450b9bb4 in handle_one_connection (arg=0x560247dfa540) at /data/src/10.3/sql/sql_connect.cc:1308

#15 0x0000560245557aab in pfs_spawn_thread (arg=0x560247e5db90) at /data/src/10.3/storage/perfschema/pfs.cc:1862

#16 0x00007fa76bc1f494 in start_thread (arg=0x7fa7641b8700) at pthread_create.c:333

#17 0x00007fa76a00593f in clone () from /lib/x86_64-linux-gnu/libc.so.6