[Draft] InnoDB: Failing assertion: btr_pcur_restore_position(BTR_MODIFY_TREE, pcur, mtr)

2017-10-20 10:44:37 0x2590  InnoDB: Assertion failure in file D:\qa-win-debug\build\storage\innobase\row\row0upd.cc line 2882

InnoDB: Failing assertion: btr_pcur_restore_position(BTR_MODIFY_TREE, pcur, mtr)

InnoDB: We intentionally generate a memory trap.

InnoDB: Submit a detailed bug report to http://bugs.mysql.com.

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: http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html

InnoDB: about forcing recovery.

171020 13:44:38 [ERROR] mysqld got exception 0x80000003 ;

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: 10.3.3-MariaDB-debug-log

key_buffer_size=1048576

read_buffer_size=131072

max_used_connections=7

max_threads=65537

thread_count=12

It is possible that mysqld could use up to 

key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 4240 K  bytes of memory

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

Thread pointer: 0xaab4d1ca38

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...

mysqld.exe!my_sigabrt_handler()[my_thr_init.c:488]

mysqld.exe!raise()[signal.cpp:516]

mysqld.exe!abort()[abort.cpp:71]

mysqld.exe!ut_dbg_assertion_failed()[ut0dbg.cc:62]

mysqld.exe!row_upd_clust_rec()[row0upd.cc:2882]

mysqld.exe!row_upd_clust_step()[row0upd.cc:3184]

mysqld.exe!row_upd()[row0upd.cc:3278]

mysqld.exe!row_upd_step()[row0upd.cc:3422]

mysqld.exe!row_update_for_mysql()[row0mysql.cc:1951]

mysqld.exe!ha_innobase::update_row()[ha_innodb.cc:9130]

mysqld.exe!handler::ha_update_row()[handler.cc:6054]

mysqld.exe!mysql_update()[sql_update.cc:811]

mysqld.exe!mysql_execute_command()[sql_parse.cc:4530]

mysqld.exe!mysql_parse()[sql_parse.cc:7921]

mysqld.exe!dispatch_command()[sql_parse.cc:1821]

mysqld.exe!do_command()[sql_parse.cc:1369]

mysqld.exe!threadpool_process_request()[threadpool_common.cc:366]

mysqld.exe!tp_callback()[threadpool_common.cc:192]

mysqld.exe!tp_callback()[threadpool_win.cc:378]

mysqld.exe!work_callback()[threadpool_win.cc:452]

ntdll.dll!RtlFreeUnicodeString()

ntdll.dll!RtlFreeUnicodeString()

KERNEL32.DLL!BaseThreadInitThunk()

ntdll.dll!RtlUserThreadStart()

Trying to get some variables.

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

Query (0xaab4d46090): UPDATE t1 SET col3 = NULL LIMIT 2  /* QNO 1640 CON_ID 21 */

Connection ID (thread ID): 21

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,split_grouping_derived=on

E:\buildbot\rqg/runall.pl --no-mask --seed=1508496021 --threads=5 --duration=400 --queries=100M --reporters=QueryTimeout,Backtrace,ErrorLog,Deadlock,Shutdown --redefine=conf/mariadb/redefine_random_keys.yy --redefine=conf/mariadb/redefine_set_session_vars.yy --validators=TransformerNoComparator --transformers=ConvertSubqueriesToViews,DisableOptimizations,EnableOptimizations,ExecuteAsCTE,ExecuteAsInsertSelect,ExecuteAsPreparedOnce,ExecuteAsSelectItem,ExecuteAsUnion,ExecuteAsUpdateDelete,ExecuteAsView,NullIf,OrderBy,StraightJoin,ExecuteAsExecuteImmediate --grammar=conf/runtime/alter_online.yy --gendata=conf/runtime/alter_online.zz --mtr-build-thread=150 --basedir1=D:\qa-win-debug\build --vardir1=E:\buildbot\vardirs\qa-win-debug\10.3-672\optim-crash-tests/current1_1