LP:624567 - mysqld: ma_write.c:2065: _ma_log_split: Assertion `offset <= org_length - diff' failed.

When executing a DML workload involving many indexes, Aria asserted as follows:

mysqld: ma_write.c:2065: _ma_log_split: Assertion `offset <= org_length - diff' failed.

backtrace:

#2 0x000000000066ccc7 in handle_segfault (sig=6) at mysqld.cc:2698
#3 <signal handler called>
#4 0x000000307b6329c5 in raise (sig=6)
at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#5 0x000000307b6341a5 in abort () at abort.c:92
#6 0x000000307b62b945 in __assert_fail (
assertion=0xd5a359 "offset <= org_length - diff",
file=<value optimized out>, line=2065, function=<value optimized out>)
at assert.c:81
#7 0x000000000099fe31 in _ma_log_split (ma_page=0x7ff4fc04d660,
org_length=3721, new_length=1701, key_pos=0x7ff4fc04c144 "\001\251",
key_length=438, move_length=435, prefix_or_suffix=KEY_OP_NONE, data=0x0,
data_length=0, changed_length=0) at ma_write.c:2065
#8 0x000000000099cb58 in _ma_split_page (info=0x45bd8c8, key=0x7ff4fc050210,
split_page=0x7ff4fc04d660, org_split_length=3721,
inserted_key_pos=0x7ff4fc04c144 "\001\251", changed_length=438,
move_length=435, key_buff=0x7ff4fc04d6a0 "\001(",
insert_last_key=0 '\000') at ma_write.c:1048
#9 0x000000000099c44c in _ma_insert (info=0x45bd8c8, key=0x7ff4fc050210,
anc_page=0x7ff4fc04d660, key_pos=0x7ff4fc04c144 "\001\251",
key_buff=0x7ff4fc04d6a0 "\001(", father_page=0x7ff4fc04f5f0,
father_key_pos=0x7ff4fc04dbf7 "", insert_last=0 '\000') at ma_write.c:914
#10 0x000000000099b99f in w_search (info=0x45bd8c8, comp_flag=0, key=0x75,
page_pos=117, father_page=0x7ff45c013090,
father_keypos=0x7ff4fc04b758 "\254\253\231", insert_last=48 '0')
at ma_write.c:711
#11 0x000000000099b94b in w_search (info=0x45bd8c8, comp_flag=395,
key=0x7ff4fc04d670, page_pos=2814766959140278,
father_page=0x7ff4fc050210,
father_keypos=0x5000 <Address 0x5000 out of bounds>,
insert_last=-12 '\364') at ma_write.c:708
#12 0x000000000099afe4 in _ma_ck_real_write_btree (info=0x45bd8c8,
key=0x7ff4fc050210, root=0x7ff4fc050100, comp_flag=655364)
at ma_write.c:514
#13 0x000000000099ae8b in _ma_ck_write_btree_with_log (info=0x45bd8c8,
key=0x7ff4fc050210, root=0x7ff478075948, comp_flag=655364)
at ma_write.c:480
#14 0x000000000099ace6 in _ma_ck_write_btree (info=0x45bd8c8,
key=0x7ff4fc050210) at ma_write.c:440
#15 0x000000000099ac5e in _ma_ck_write (info=0x45bd8c8, key=0x7ff4fc050210)
at ma_write.c:425
#16 0x000000000099a489 in maria_write (info=0x45bd8c8,
record=0x45bb010 "\357\372\377") at ma_write.c:180
#17 0x0000000000951f68 in ha_maria::write_row (this=0x461c370,
buf=0x45bb010 "\357\372\377") at ha_maria.cc:1037
#18 0x00000000007c0f22 in handler::ha_write_row (this=0x461c370,
buf=0x45bb010 "\357\372\377") at handler.cc:4655
#19 0x0000000000722992 in write_record (thd=0x461c370, table=0x45bb010,
info=0x951f68) at sql_insert.cc:1632
#20 0x0000000000720821 in mysql_insert (thd=0x451c108,
table_list=0x7ff45c014be0, fields=..., values_list=...,
update_fields=..., update_values=..., duplic=DUP_ERROR, ignore=false)
at sql_insert.cc:860
#21 0x000000000068353d in mysql_execute_command (thd=0x451c108)
at sql_parse.cc:3287
#22 0x000000000068beca in mysql_parse (thd=0x451c108,
inBuf=0x7ff45c014910 "INSERT INTO `table100_maria_int_autoinc` ( `col_char_255_ucs2_key` , `col_enum_ucs2` , `col_char_255_utf8` ) VALUES ( REPEAT( _LATIN1 0x254 , 106 ) , REPEAT( _UCS2 0xB8 , 239 ) , CONVERT( 'have' USING UCS2 ) )", length=209, found_semicolon=0x7ff4fc051c70) at sql_parse.cc:6081
#23 0x000000000067e0bf in dispatch_command (command=COM_QUERY, thd=0x451c108,
packet=0x451f399 "INSERT INTO `table100_maria_int_autoinc` ( `col_char_255_ucs2_key` , `col_enum_ucs2` , `col_char_255_utf8` ) VALUES ( REPEAT( _LATIN1 0x254 , 106 ) , REPEAT( _UCS2 0xB8 , 239 ) , CONVERT( 'have' USING UCS2 ) )",
packet_length=209) at sql_parse.cc:1268
#24 0x000000000067d0d6 in do_command (thd=0x451c108) at sql_parse.cc:894
#25 0x000000000067a101 in handle_one_connection (arg=0x451c108)
at sql_connect.cc:1138
#26 0x000000307ba07761 in start_thread (arg=0x7ff4fc052710)
at pthread_create.c:301

bzr version-info:

revision-id: <email address hidden>
date: 2010-08-25 01:43:26 +0300
build-date: 2010-08-26 13:41:34 +0300
revno: 2917
branch-nick: 5.1

rqg command line:

/home/buildbot/randgen/runall.pl \
--queries=1M \
--engine=Maria \
-mysqld=-log-output=file \
--reporters=ErrorLog,Backtrace,Recovery,Shutdown \
--duration=240 \
--threads=20 \
--rows=1000 \
--mask-level=0 \
-mysqld=-loose-maria-group-commit=hard \
-mysqld=-loose-maria_group_commit_interval=100 \
-mysqld=-maria-checkpoint-interval=0 \
-mysqld=-maria-block-size=4K \
--grammar=conf/engines/many_indexes.yy \
--gendata=conf/engines/many_indexes.zz \
--mask=23736 \
--queries=100000000 \
--basedir=. \
--seed=1282818570