SET autocommit=FALSE;

ALTER TABLE mysql.columns_priv ENGINE=InnoDB;

FLUSH PRIVILEGES;

mysqld: /test/10.3_dbg/sql/sql_reload.cc:213: bool reload_acl_and_cache(THD*, long long unsigned int, TABLE_LIST*, int*): Assertion `!thd || thd->locked_tables_mode || !thd->mdl_context.has_locks() || thd->handler_tables_hash.records || thd->ull_hash.records || thd->global_read_lock.is_acquired()' failed.

Core was generated by `/test/MD160321-mariadb-10.3.29-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:56

[Current thread is 1 (Thread 0x152df40bd700 (LWP 4059893))]

(gdb) bt

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

#1  0x000055e0b2960b86 in my_write_core (sig=sig@entry=6) at /test/10.3_dbg/mysys/stacktrace.c:386

#2  0x000055e0b210bb91 in handle_fatal_signal (sig=6) at /test/10.3_dbg/sql/signal_handler.cc:343

#3  <signal handler called>

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

#5  0x0000152df7819859 in __GI_abort () at abort.c:79

#6  0x0000152df7819729 in __assert_fail_base (fmt=0x152df79af588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x55e0b2a45e28 "!thd || thd->locked_tables_mode || !thd->mdl_context.has_locks() || thd->handler_tables_hash.records || thd->ull_hash.records || thd->global_read_lock.is_acquired()", file=0x55e0b2a45e00 "/test/10.3_dbg/sql/sql_reload.cc", line=213, function=<optimized out>) at assert.c:92

#7  0x0000152df782af36 in __GI___assert_fail (assertion=assertion@entry=0x55e0b2a45e28 "!thd || thd->locked_tables_mode || !thd->mdl_context.has_locks() || thd->handler_tables_hash.records || thd->ull_hash.records || thd->global_read_lock.is_acquired()", file=file@entry=0x55e0b2a45e00 "/test/10.3_dbg/sql/sql_reload.cc", line=line@entry=213, function=function@entry=0x55e0b2a45db0 "bool reload_acl_and_cache(THD*, long long unsigned int, TABLE_LIST*, int*)") at assert.c:101

#8  0x000055e0b1fe24bd in reload_acl_and_cache (thd=thd@entry=0x152d98000d90, options=1, tables=tables@entry=0x0, write_to_binlog=write_to_binlog@entry=0x152df40bae70) at /test/10.3_dbg/sql/sql_class.h:1989

#9  0x000055e0b1e84f0c in mysql_execute_command (thd=thd@entry=0x152d98000d90) at /test/10.3_dbg/sql/sql_parse.cc:5421

#10 0x000055e0b1e894c4 in mysql_parse (thd=thd@entry=0x152d98000d90, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x152df40bc540, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.3_dbg/sql/sql_parse.cc:7867

#11 0x000055e0b1e8bc32 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x152d98000d90, packet=packet@entry=0x152d980198f1 "FLUSH PRIVILEGES", packet_length=packet_length@entry=16, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.3_dbg/sql/sql_class.h:1139

#12 0x000055e0b1e8eddf in do_command (thd=0x152d98000d90) at /test/10.3_dbg/sql/sql_parse.cc:1398

#13 0x000055e0b1fb47db in do_handle_one_connection (connect=connect@entry=0x55e0b64a8cd0) at /test/10.3_dbg/sql/sql_connect.cc:1403

#14 0x000055e0b1fb4a12 in handle_one_connection (arg=0x55e0b64a8cd0) at /test/10.3_dbg/sql/sql_connect.cc:1308

#15 0x0000152df7d1f609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#16 0x0000152df7916293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

mysqld: /test/10.2_dbg/sql/sql_reload.cc:220: bool reload_acl_and_cache(THD*, long long unsigned int, TABLE_LIST*, int*): Assertion `!thd || thd->locked_tables_mode || !thd->mdl_context.has_locks() || thd->handler_tables_hash.records || thd->ull_hash.records || thd->global_read_lock.is_acquired()' failed.

Core was generated by `/test/MD160321-mariadb-10.2.38-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:56

[Current thread is 1 (Thread 0x14bf98142700 (LWP 4035190))]

(gdb) bt

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

#1  0x000055d94e7c7f9a in my_write_core (sig=sig@entry=6) at /test/10.2_dbg/mysys/stacktrace.c:382

#2  0x000055d94e0ae043 in handle_fatal_signal (sig=6) at /test/10.2_dbg/sql/signal_handler.cc:343

#3  <signal handler called>

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

#5  0x000014bfb31ee859 in __GI_abort () at abort.c:79

#6  0x000014bfb31ee729 in __assert_fail_base (fmt=0x14bfb3384588 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=0x55d94e89d120 "!thd || thd->locked_tables_mode || !thd->mdl_context.has_locks() || thd->handler_tables_hash.records || thd->ull_hash.records || thd->global_read_lock.is_acquired()", file=0x55d94e89d0f8 "/test/10.2_dbg/sql/sql_reload.cc", line=220, function=<optimized out>) at assert.c:92

#7  0x000014bfb31fff36 in __GI___assert_fail (assertion=assertion@entry=0x55d94e89d120 "!thd || thd->locked_tables_mode || !thd->mdl_context.has_locks() || thd->handler_tables_hash.records || thd->ull_hash.records || thd->global_read_lock.is_acquired()", file=file@entry=0x55d94e89d0f8 "/test/10.2_dbg/sql/sql_reload.cc", line=line@entry=220, function=function@entry=0x55d94e89d0a8 "bool reload_acl_and_cache(THD*, long long unsigned int, TABLE_LIST*, int*)") at assert.c:101

#8  0x000055d94dfe36f6 in reload_acl_and_cache (thd=thd@entry=0x14bf54000d90, options=1, tables=tables@entry=0x0, write_to_binlog=write_to_binlog@entry=0x14bf9813ffc0) at /test/10.2_dbg/sql/sql_plist.h:84

#9  0x000055d94dead0ef in mysql_execute_command (thd=thd@entry=0x14bf54000d90) at /test/10.2_dbg/sql/sql_parse.cc:5202

#10 0x000055d94deb0e33 in mysql_parse (thd=thd@entry=0x14bf54000d90, rawbuf=<optimized out>, length=<optimized out>, parser_state=parser_state@entry=0x14bf98141550, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.2_dbg/sql/sql_parse.cc:7790

#11 0x000055d94deb3933 in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x14bf54000d90, packet=packet@entry=0x14bf540195d1 "FLUSH PRIVILEGES", packet_length=packet_length@entry=16, is_com_multi=is_com_multi@entry=false, is_next_command=is_next_command@entry=false) at /test/10.2_dbg/sql/sql_class.h:1109

#12 0x000055d94deb673c in do_command (thd=0x14bf54000d90) at /test/10.2_dbg/sql/sql_parse.cc:1381

#13 0x000055d94dfb9bcc in do_handle_one_connection (connect=connect@entry=0x55d951b272e0) at /test/10.2_dbg/sql/sql_connect.cc:1336

#14 0x000055d94dfb9df7 in handle_one_connection (arg=0x55d951b272e0) at /test/10.2_dbg/sql/sql_connect.cc:1241

#15 0x000014bfb36f4609 in start_thread (arg=<optimized out>) at pthread_create.c:477

#16 0x000014bfb32eb293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95