Version: '10.3.6-MariaDB-debug-log'  socket: '/home/travis/logs/vardir1_3/mysql.sock'  port: 19300  Source distribution

180329 10:27:38 [ERROR] mysqld got signal 11 ;

This could be because you hit a bug. It is also possible that this binary

or one of the libraries it was linked against is corrupt, improperly built,

or misconfigured. This error can also be caused by malfunctioning hardware.

To report this bug, see https://mariadb.com/kb/en/reporting-bugs

We will try our best to scrape up some info that will hopefully help

diagnose the problem, but since we have already crashed, 

something is definitely wrong and this may fail.

Server version: 10.3.6-MariaDB-debug-log

key_buffer_size=134217728

read_buffer_size=131072

max_used_connections=8

max_threads=153

thread_count=14

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467490 K  bytes of memory

Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7fb97c000fa0

Attempting backtrace. You can use the following information to find out

where mysqld died. If you see no messages after this, something went

terribly wrong...

stack_bottom = 0x7fb9cc17fe30 thread_stack 0x49000

/home/travis/server/bin/mysqld(my_print_stacktrace+0x40)[0x55d538a11688]

/home/travis/server/bin/mysqld(handle_fatal_signal+0x3dc)[0x55d538262d8b]

/lib/x86_64-linux-gnu/libpthread.so.0(+0x10330)[0x7fb9d4a9f330]

/home/travis/server/bin/mysqld(_ZN4Item11delete_selfEv+0x17)[0x55d537f258b5]

sql/item.h:1879(Item::delete_self())[0x55d537f1be89]

sql/sql_class.cc:3764(Query_arena::free_items())[0x55d538088b1c]

sql/table.cc:3566(closefrm(TABLE*))[0x55d53819b563]

sql/table_cache.cc:223(intern_close_table)[0x55d53819b702]

sql/table_cache.cc:261(tc_remove_table)[0x55d53819c06f]

sql/table_cache.cc:472(tc_release_table(TABLE*))[0x55d537ee99bd]

sql/sql_base.cc:910(close_thread_table(THD*, TABLE**))[0x55d537ee9222]

sql/sql_base.cc:677(close_all_tables_for_name(THD*, TABLE_SHARE*, ha_extra_function, TABLE*))[0x55d53804e40d]

sql/sql_table.cc:7698(mysql_inplace_alter_table)[0x55d53805464a]

sql/sql_table.cc:9847(mysql_alter_table(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, HA_CREATE_INFO*, TABLE_LIST*, Alter_info*, unsigned int, st_order*, bool))[0x55d5380dae3e]

sql/sql_alter.cc:334(Sql_cmd_alter_table::execute(THD*))[0x55d537f7f94d]

sql/sql_parse.cc:6284(mysql_execute_command(THD*))[0x55d537fa204f]

sql/sql_prepare.cc:4740(Prepared_statement::execute(String*, bool))[0x55d537fa0499]

sql/sql_prepare.cc:4170(Prepared_statement::execute_loop(String*, bool, unsigned char*, unsigned char*))[0x55d537f9dd39]

sql/sql_prepare.cc:3170(mysql_stmt_execute_common)[0x55d537f9d8dc]

sql/sql_prepare.cc:3069(mysqld_stmt_execute(THD*, char*, unsigned int))[0x55d537f71841]

sql/sql_parse.cc:1785(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool))[0x55d537f70628]

sql/sql_parse.cc:1387(do_command(THD*))[0x55d5380d58b3]

sql/sql_connect.cc:1402(do_handle_one_connection(CONNECT*))[0x55d5380d5640]

sql/sql_connect.cc:1309(handle_one_connection)[0x55d5389aafc3]

nptl/pthread_create.c:312(start_thread)[0x7fb9d4a97184]

/lib/x86_64-linux-gnu/libc.so.6(clone+0x6d)[0x7fb9d3fa403d]

Trying to get some variables.

Some pointers may be invalid and cause the dump to abort.

Query (0x7fb97c062368): ALTER TABLE `DD` ADD KEY ( t ) /* QNO 27312 CON_ID 14 */

Connection ID (thread ID): 14

Status: NOT_KILLED

#3  <signal handler called>

#4  0x000055d537f258b5 in Item::delete_self (this=0x7fb97d32a528) at /home/travis/src/sql/item.h:1879

#5  0x000055d537f1be89 in Query_arena::free_items (this=0x7fb97d32a5b8) at /home/travis/src/sql/sql_class.cc:3769

#6  0x000055d538088b1c in closefrm (table=0x7fb97d3d1750) at /home/travis/src/sql/table.cc:3565

#7  0x000055d53819b563 in intern_close_table (table=0x7fb97d3d1750) at /home/travis/src/sql/table_cache.cc:222

#8  0x000055d53819b702 in tc_remove_table (table=0x7fb97d3d1750) at /home/travis/src/sql/table_cache.cc:260

#9  0x000055d53819c06f in tc_release_table (table=0x7fb97d3d1750) at /home/travis/src/sql/table_cache.cc:472

#10 0x000055d537ee99bd in close_thread_table (thd=0x7fb97c000fa0, table_ptr=0x7fb97c001090) at /home/travis/src/sql/sql_base.cc:909

#11 0x000055d537ee9222 in close_all_tables_for_name (thd=0x7fb97c000fa0, share=0x7fb97d57f708, extra=HA_EXTRA_NOT_USED, skip_table=0x0) at /home/travis/src/sql/sql_base.cc:677

#12 0x000055d53804e40d in mysql_inplace_alter_table (thd=0x7fb97c000fa0, table_list=0x7fb97c062490, table=0x7fb97d3d1750, altered_table=0x7fb97c07a0e0, ha_alter_info=0x7fb9cc17be80, inplace_supported=HA_ALTER_INPLACE_SHARED_LOCK_AFTER_PREPARE, target_mdl_request=0x7fb9cc17bff0, alter_ctx=0x7fb9cc17cca0) at /home/travis/src/sql/sql_table.cc:7697

#13 0x000055d53805464a in mysql_alter_table (thd=0x7fb97c000fa0, new_db=0x7fb97c0614d0, new_name=0x7fb97c061880, create_info=0x7fb9cc17d880, table_list=0x7fb97c062490, alter_info=0x7fb9cc17d7d0, order_num=0, order=0x0, ignore=false) at /home/travis/src/sql/sql_table.cc:9847

#14 0x000055d5380dae3e in Sql_cmd_alter_table::execute (this=0x7fb97c062ba8, thd=0x7fb97c000fa0) at /home/travis/src/sql/sql_alter.cc:334

#15 0x000055d537f7f94d in mysql_execute_command (thd=0x7fb97c000fa0) at /home/travis/src/sql/sql_parse.cc:6284

#16 0x000055d537fa204f in Prepared_statement::execute (this=0x7fb97d2342f0, expanded_query=0x7fb9cc17f2f0, open_cursor=false) at /home/travis/src/sql/sql_prepare.cc:4740

#17 0x000055d537fa0499 in Prepared_statement::execute_loop (this=0x7fb97d2342f0, expanded_query=0x7fb9cc17f2f0, open_cursor=false, packet=0x7fb97d0bee5a "", packet_end=0x7fb97d0bee5a "") at /home/travis/src/sql/sql_prepare.cc:4170

#18 0x000055d537f9dd39 in mysql_stmt_execute_common (thd=0x7fb97c000fa0, stmt_id=29673, packet=0x7fb97d0bee5a "", packet_end=0x7fb97d0bee5a "", cursor_flags=0, bulk_op=false, read_types=false) at /home/travis/src/sql/sql_prepare.cc:3170

#19 0x000055d537f9d8dc in mysqld_stmt_execute (thd=0x7fb97c000fa0, packet_arg=0x7fb97d0bee51 "\351s", packet_length=9) at /home/travis/src/sql/sql_prepare.cc:3068

#20 0x000055d537f71841 in dispatch_command (command=COM_STMT_EXECUTE, thd=0x7fb97c000fa0, packet=0x7fb97d0bee51 "\351s", packet_length=9, is_com_multi=false, is_next_command=false) at /home/travis/src/sql/sql_parse.cc:1784

#21 0x000055d537f70628 in do_command (thd=0x7fb97c000fa0) at /home/travis/src/sql/sql_parse.cc:1387

#22 0x000055d5380d58b3 in do_handle_one_connection (connect=0x55d53c42f1c0) at /home/travis/src/sql/sql_connect.cc:1402

#23 0x000055d5380d5640 in handle_one_connection (arg=0x55d53c42f1c0) at /home/travis/src/sql/sql_connect.cc:1308

#24 0x000055d5389aafc3 in pfs_spawn_thread (arg=0x55d53c4f3cf0) at /home/travis/src/storage/perfschema/pfs.cc:1862

#25 0x00007fb9d4a97184 in start_thread (arg=0x7fb9cc180700) at pthread_create.c:312

#26 0x00007fb9d3fa403d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

perl /home/travis/rqg/runall-new.pl --duration=350 --threads=6 --seed=1522319169 --reporters=Backtrace,ErrorLog,Deadlock --validators=TransformerNoComparator --views --redefine=conf/mariadb/versioning.yy --redefine=conf/mariadb/alter_table.yy --redefine=conf/mariadb/bulk_insert.yy --redefine=conf/mariadb/sequences.yy --redefine=conf/mariadb/xa.yy --basedir=/home/travis/server --mysqld=--log_output=FILE --mysqld=--max-statement-time=30 --mysqld=--lock-wait-timeout=10 --mysqld=--loose-innodb-lock-wait-timeout=5 --mysqld=--loose-debug_assert_on_not_freed_memory=0 --mysqld=--default-storage-engine=RocksDB --mysqld=--plugin-load-add=ha_rocksdb --mysqld=--binlog-format=row --grammar=conf/runtime/performance_schema.yy --mysqld=--performance-schema --ps-protocol --transformers=ExecuteAsCTE,ExecuteAsDeleteReturning,ExecuteAsExcept,ExecuteAsInsertSelect,ExecuteAsIntersect,ExecuteAsUnion,ExecuteAsUpdateDelete,ExecuteAsView,ExecuteAsSPTwice --vardir=/home/travis/logs/vardir1_3