Elena Stepanova added a comment - 2015-05-07 20:52 - edited Sorry about that. What was said in MDEV-7892 is true, the bugfix for MDEV-7613 (commit b9a75862) did fix this crash on 5.5 tree, I just re-checked it; but then the following patch broke it again: commit 8cbaafd22b145512cc91f7b512290320849e77bd Author: Oleksandr Byelkin <sanja@mariadb.com> Date: Wed Apr 22 10:14:11 2015 +0200   MDEV-8018: main.multi_update fails with --ps-protocol save_prep_leaf_tables() made recursive to work with underlying view Arena restoiring fixed in case of EOM.   sanja , The test case is in MDEV-7892 .

Moshe L added a comment - 2015-06-01 16:44 - edited I am using the last version (10.0.19) and from times to times see this error message on the slave. the problem not seen on master (10.1.16). I am thinking that is the same error, but not sure. 150601 7 : 10 : 26 [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 http: //kb.askmonty.org/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: 10.0 . 19 -MariaDB- 1 ~wheezy-log key_buffer_size= 33554432 read_buffer_size= 2097152 max_used_connections= 85 max_threads= 5002 thread_count= 70 It is possible that mysqld could use up to key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 30863942 K bytes of memory Hope that's ok; if not, decrease some variables in the equation.   Thread pointer: 0x0x7fe78ecda008 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 = 0x7fe98649ddf0 thread_stack 0x80000 /usr/sbin/mysqld(my_print_stacktrace+ 0x2b )[ 0x7fe98a49b90b ] /usr/sbin/mysqld(handle_fatal_signal+ 0x422 )[ 0x7fe98a025c42 ] /lib/x86_64-linux-gnu/libpthread.so. 0 (+ 0xf8d0 )[ 0x7fe9896708d0 ] /usr/sbin/mysqld(+ 0x452730 )[ 0x7fe989ef3730 ] /usr/sbin/mysqld(+ 0x373796 )[ 0x7fe989e14796 ] /usr/sbin/mysqld(_ZN4JOIN14optimize_innerEv+ 0x84a )[ 0x7fe989f142fa ] /usr/sbin/mysqld(_ZN4JOIN8optimizeEv+ 0x28 )[ 0x7fe989f16738 ] /usr/sbin/mysqld(_ZN13st_select_lex31optimize_unflattened_subqueriesEb+ 0x88 )[ 0x7fe989ebbf58 ] /usr/sbin/mysqld(_ZN4JOIN28optimize_constant_subqueriesEv+ 0x3a )[ 0x7fe989fc009a ] /usr/sbin/mysqld(_ZN4JOIN14optimize_innerEv+ 0x2a0 )[ 0x7fe989f13d50 ] /usr/sbin/mysqld(_Z12mysql_selectP3THDPPP4ItemP10TABLE_LISTjR4ListIS1_ES2_jP8st_orderSB_S2_SB_yP13select_resultP18st_select_lex_unitP13st_select_lex+ 0xd8 )[ 0x7fe989f16958 ] /usr/sbin/mysqld(_Z18mysql_multi_updateP3THDP10TABLE_LISTP4ListI4ItemES6_PS4_y15enum_duplicatesbP18st_select_lex_unitP13st_select_lexPP12multi_update+ 0x1c0 )[ 0x7fe989f5e450 ] /usr/sbin/mysqld(_Z21mysql_execute_commandP3THD+ 0x4704 )[ 0x7fe989ec9894 ] /usr/sbin/mysqld(+ 0x42aa03 )[ 0x7fe989ecba03 ] /usr/sbin/mysqld(_ZN15Query_log_event14do_apply_eventEP14rpl_group_infoPKcj+ 0xffe )[ 0x7fe98a0eb5ae ] /usr/sbin/mysqld(_Z26apply_event_and_update_posP9Log_eventP3THDP14rpl_group_infoP19rpl_parallel_thread+ 0x18d )[ 0x7fe989e562bd ] /usr/sbin/mysqld(handle_rpl_parallel_thread+ 0xb9e )[ 0x7fe989fcf4ae ] /lib/x86_64-linux-gnu/libpthread.so. 0 (+ 0x80a4 )[ 0x7fe9896690a4 ] /lib/x86_64-linux-gnu/libc.so. 6 (clone+ 0x6d )[ 0x7fe987c6804d ]   Trying to get some variables. Some pointers may be invalid and cause the dump to abort. Query ( 0x7fe7695ee792 ): is an invalid pointer Connection ID (thread ID): 8 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   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. 150601 07 : 10 : 26 mysqld_safe Number of processes running now: 0 150601 07 : 10 : 26 mysqld_safe mysqld restarted

Oleksandr Byelkin added a comment - 2015-06-03 19:53 - edited join_tab has somehow unassigned reference to JOIN (valgrund?)

Oleksandr Byelkin added a comment - 2015-06-04 15:10 valgrind shows several problems but they looks like part of bigger problem of using something uninitialiyed... The interesting moment is only check of unsigned of fixed Item which has uninitialized value...

Oleksandr Byelkin added a comment - 2015-06-04 17:24 One of the problem is that leaf list stored before preparing subqueries because subqueries in SET part prepared later

Oleksandr Byelkin added a comment - 2015-06-04 18:56 --source include/have_innodb.inc CREATE TABLE `t1` ( `c1` int(11) NOT NULL, `c2` datetime DEFAULT NULL, PRIMARY KEY (`c1`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE TABLE `t2` ( `c0` varchar(10) NOT NULL, `c1` int(11) NOT NULL, `c2` int(11) NOT NULL, PRIMARY KEY (`c0`,`c1`), KEY `c1` (`c1`), KEY `c2` (`c2`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE TABLE `t3` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `c1` datetime NOT NULL, `c2` bigint(20) NOT NULL, `c3` int(4) unsigned NOT NULL, PRIMARY KEY (`id`), KEY `c2` (`c2`), KEY `c3` (`c3`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE TABLE `t4` ( `c1` int(11) NOT NULL, `c2` bigint(20) DEFAULT NULL, `c3` int(11) NOT NULL ) ENGINE=InnoDB DEFAULT CHARSET=latin1; CREATE ALGORITHM=UNDEFINED VIEW `v1` AS select `t4`.`c1` AS `c1`,`t4`.`c2` AS `c2`,`t4`.`c3` AS `c3` from `t4`; UPDATE t1 a JOIN t2 b ON a.c1 = b.c1 JOIN v1 vw ON b.c2 = vw.c1 JOIN t3 del ON vw.c2 = del.c2 SET a.c2 = ( SELECT max(t.c1) FROM t3 t, v1 i WHERE del.c2 = t.c2 AND vw.c3 = i.c3 AND t.c3 = 4 ) WHERE a.c2 IS NULL OR a.c2 < '2011-05-01'; drop view v1; drop table t1,t2,t3,t4;

Oleksandr Byelkin added a comment - 2015-06-04 20:11 revision-id: d4b5dd21a91085cf434c5838d28f3436b50c6719 parent(s): 6bd76f8b7e086ab7cf0249a05277ff552e564554 committer: Oleksandr Byelkin branch nick: server timestamp: 2015-06-04 19:07:34 +0200 message: MDEV-8114 : server crash on updates with joins still on 10.0.18 Check that leaf table list is really built before storing it. —

Sergei Petrunia added a comment - 2015-06-05 19:45 Ok to push.