gcol.innodb_virtual_basic fails in buildbot, Failing assertion: cursor->old_rec

gcol.innodb_virtual_basic 'innodb'       w3 [ fail ]

        Test ended at 2018-08-10 15:44:09

CURRENT_TEST: gcol.innodb_virtual_basic

mysqltest: At line 432: query 'CALL DELETE_insert_t()' failed: 2013: Lost connection to MySQL server during query

The result from queries just before the failure was:

< snip >

UPDATE t SET a = REPEAT(CAST(1 AS CHAR), 1000) WHERE h = 1;

CREATE PROCEDURE UPDATE_t()

begin

DECLARE i INT DEFAULT 1;

WHILE (i <= 200) DO

UPDATE t SET a = REPEAT(CAST(i AS CHAR), 2000) WHERE h = 1;

SET i = i + 1;

END WHILE;

END|

CREATE PROCEDURE DELETE_insert_t()

begin

DECLARE i INT DEFAULT 1;

WHILE (i <= 200) DO

DELETE FROM t WHERE h = 1;

INSERT INTO t VALUES (REPEAT(CAST(i AS CHAR), 2000) ,  REPEAT('b', 2000), DEFAULT, DEFAULT, DEFAULT, 1);

SET i = i + 1;

END WHILE;

END|

CALL UPDATE_t();

CALL DELETE_insert_t();

More results from queries before failure can be found in /dev/shm/var/3/log/innodb_virtual_basic.log

Server [mysqld.1 - pid: 24469, winpid: 24469, exit: 256] failed during test run

Server log from this test:

----------SERVER LOG START-----------

2018-08-10 15:44:06 0x7f677affd700  InnoDB: Assertion failure in file /home/buildbot/buildbot/padding_for_CPACK_RPM_BUILD_SOURCE_DIRS_PREFIX/mariadb-10.2.17/storage/innobase/btr/btr0pcur.cc line 273

InnoDB: Failing assertion: cursor->old_rec

InnoDB: We intentionally generate a memory trap.

InnoDB: Submit a detailed bug report to https://jira.mariadb.org/

InnoDB: If you get repeated assertion failures or crashes, even

InnoDB: immediately after the mysqld startup, there may be

InnoDB: corruption in the InnoDB tablespace. Please refer to

InnoDB: https://mariadb.com/kb/en/library/xtradbinnodb-recovery-modes/

InnoDB: about forcing recovery.

180810 15:44:06 [ERROR] mysqld got signal 6 ;

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: 10.2.17-MariaDB-log

key_buffer_size=1048576

read_buffer_size=131072

max_used_connections=2

max_threads=153

thread_count=8

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 63022 K  bytes of memory

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

Thread pointer: 0x7f674c0009a8

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 = 0x7f677affcc30 thread_stack 0x49000

/usr/sbin/mysqld(my_print_stacktrace+0x2e)[0x55b243beb42e]

/usr/sbin/mysqld(handle_fatal_signal+0x355)[0x55b243669125]

sigaction.c:0(__restore_rt)[0x7f679dcfc5e0]

:0(__GI_raise)[0x7f679c2091f7]

:0(__GI_abort)[0x7f679c20a8e8]

/usr/sbin/mysqld(+0x429928)[0x55b243418928]

/usr/sbin/mysqld(+0x9e7c76)[0x55b2439d6c76]

ut/ut0rbt.cc:221(rbt_tree_add_child(ib_rbt_t const*, ib_rbt_bound_t*, ib_rbt_node_t*) [clone .isra.4] [clone .part.5])[0x55b243929f53]

btr/btr0pcur.cc:251(btr_pcur_restore_position_func(unsigned long, btr_pcur_t*, char const*, unsigned int, mtr_t*))[0x55b24392ae32]

row/row0purge.cc:724(row_purge_step(que_thr_t*))[0x55b24392c4ee]

que/que0que.cc:1049(que_run_threads(que_thr_t*))[0x55b2438e8164]

include/my_atomic.h:274(srv_worker_thread)[0x55b24395bf1c]

pthread_create.c:0(start_thread)[0x7f679dcf4e25]

/lib64/libc.so.6(clone+0x6d)[0x7f679c2cc34d]

Trying to get some variables.

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

Query (0x0): 

Connection ID (thread ID): 5

Status: NOT_KILLED

Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains

information that should help you find out what is causing the crash.

Writing a core file at /dev/shm/var/3/mysqld.1/data/

----------SERVER LOG END-------------