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kroki/tomash@moonlight.intranet 4e845cccc4 BUG#21206: memory corruption when too many cursors are opened at once 
Too many cursors (more than 1024) could lead to memory corruption.
This affects both, stored routines and C API cursors, and the
threshold is per-server, not per-connection.  Similarly, the
corruption could happen when the server was under heavy load
(executing more than 1024 simultaneous complex queries), and this is
the reason why this bug is fixed in 4.1, which doesn't support
cursors.

The corruption was caused by a bug in the temporary tables code, when
an attempt to create a table could lead to a write beyond allocated
space.  Note, that only internal tables were affected (the tables
created internally by the server to resolve the query), not tables
created with CREATE TEMPORARY TABLE.  Another pre-condition for the
bug is TRUE value of --temp-pool startup option, which, however, is a
default.

The cause of a bug was that random memory was overwritten in
bitmap_set_next() due to out-of-bound memory access.
2006-07-26 16:23:07 +04:00
..
examples Fix for bug #15558: truncate doesn't clear table on archive storage engine tables. 2006-05-18 17:10:58 +05:00
share Fixed bug #17873: confusing error message when IGNORE/USE/FORCE INDEX 2006-05-30 00:08:58 -07:00
.cvsignore
add_errmsg
client_settings.h
custom_conf.h
derror.cc
des_key_file.cc Many files: 2005-09-30 14:03:55 +02:00
discover.cc WL1424 Multiple MySQL Servers: SHOW TABLES etc. should detect new and delete old tables. 2004-09-13 14:46:38 +02:00
field.cc Merge trift2.:/M41/clone-4.1 2006-07-24 19:18:30 +02:00
field.h Bug #21135 Crash in test "func_time" 2006-07-19 15:55:04 +02:00
field_conv.cc a fix (bug #7589: Decimal types are ignored when updating data from another column). 2005-09-21 14:32:19 +05:00
filesort.cc Review fixes since last pull 2005-09-12 18:48:17 +03:00
frm_crypt.cc
gen_lex_hash.cc Merge with 4.0 2004-09-01 04:12:09 +03:00
gstream.cc
gstream.h
ha_berkeley.cc BUG#6554 Problem Building MySql on Fedora Core 3 2006-01-16 12:17:30 +01:00
ha_berkeley.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
ha_blackhole.cc ha_blackhole.cc: 2005-08-30 02:46:03 +02:00
ha_blackhole.h ha_blackhole changes, same patch as http://lists.mysql.com/internals/27878, per brian 2005-08-26 02:09:56 +02:00
ha_heap.cc Cleanup during review of new pushed code 2006-03-30 03:11:37 +03:00
ha_heap.h Bug #12796: Record lost in HEAP table 2005-11-08 00:26:37 -05:00
ha_innodb.cc Applied innodb-4.1-ss29 snapshot. 2006-05-15 17:25:37 +04:00
ha_innodb.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
ha_isam.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
ha_isam.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
ha_isammrg.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
ha_isammrg.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
ha_myisam.cc BUG#9622, stage 2, work together with fix for BUG#12232: 2005-10-21 06:29:17 +04:00
ha_myisam.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
ha_myisammrg.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
ha_myisammrg.h Bug#10400 - Improperly-defined MERGE table crashes with INSERT ... ON DUPLICATE KEY UPDATE 2005-05-18 19:40:39 +02:00
ha_ndbcluster.cc Merge poseidon.ndb.mysql.com:/home/tomas/mysql-4.1 2006-06-30 16:26:33 +02:00
ha_ndbcluster.h Fix for Bug #18184 SELECT ... FOR UPDATE does not work..: implemented ha_ndblcuster::unlock_row() and explicitly lock all rows that are not being unlocked 2006-06-08 16:12:38 +02:00
handler.cc --{skip-}merge option added which allows the user to disable merge engine and 2006-07-14 16:26:58 +05:00
handler.h Bug #18864 TRUNCATE TABLE doesn't reset AUTO_INCREMENT value on ndb table 2006-06-02 07:26:45 +02:00
hash_filo.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
hash_filo.h forgotten s/__GNUC__/USE_PRAGMA_INTERFACE/ causes compilation faliures 2005-05-27 14:15:08 +02:00
hostname.cc Fix for bug #15756: incorrect ip address matching in ACL due to use of latin1 collation. 2006-01-24 13:58:28 +04:00
init.cc
item.cc BUG#18492: mysqld reports ER_ILLEGAL_REFERENCE in --ps-protocol 2006-04-28 11:23:31 +02:00
item.h Better comments for void Item::top_level_item() 2006-07-04 13:28:30 +04:00
item_buff.cc group_by.result, group_by.test: 2005-06-21 04:24:21 -07:00
item_cmpfunc.cc select.result: 2006-06-20 23:05:55 +04:00
item_cmpfunc.h gcc 4.1 linux warning fixes backported from 5.0. 2006-06-28 16:28:29 +03:00
item_create.cc Merging fix for bug #9796 "Query Cache caches queries with CURRENT_USER() 2005-04-11 10:44:48 +04:00
item_create.h Making 4.1 tree compile with -ansi -pedantic 2004-12-16 16:16:28 +03:00
item_func.cc Fix for bug #6880: LAST_INSERT_ID() within a statement 2006-06-07 14:01:10 +05:00
item_func.h Merge zippy.(none):/home/cmiller/work/mysql/mysql-4.0__bug19006 2006-07-11 07:24:59 -04:00
item_geofunc.cc Fix for bug #12839 (Endian support is absurd) 2005-09-21 14:35:01 +05:00
item_geofunc.h bug #10166 (Signed byte values cause data to be padded) 2006-06-22 22:11:27 +05:00
item_row.cc A fix and a test case for Bug#16248 "WHERE (col1,col2) IN ((?,?)) 2006-04-07 22:26:25 +04:00
item_row.h A fix and a test case for Bug#16248 "WHERE (col1,col2) IN ((?,?)) 2006-04-07 22:26:25 +04:00
item_strfunc.cc Fixed bug #18243. 2006-07-06 11:11:49 -07:00
item_strfunc.h Fixed bug #18243. 2006-07-06 11:11:49 -07:00
item_subselect.cc Fixed bug#16302: Quantified subquery without any tables gives wrong results 2006-07-11 00:34:37 +04:00
item_subselect.h - a fix for Bug#11458 "Prepared statement with subselects return random 2005-07-13 17:38:55 +04:00
item_sum.cc Fixed bug #20076. 2006-06-22 15:50:15 -07:00
item_sum.h Fixed bug#14169: type of group_concat() result changed to blob if tmp_table was 2006-04-12 23:05:38 +04:00
item_timefunc.cc Backporting Kostja's changes made for 5.0 into 4.1. 2006-07-18 15:53:12 +05:00
item_timefunc.h Manually merged 2006-06-17 02:11:12 +04:00
item_uniq.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
item_uniq.h Add ifdefs to control when "#pragma implementation" should be used 2005-05-26 12:09:14 +02:00
key.cc Merge 2005-03-17 10:59:25 +04:00
lex.h WL#1596 "make mysqldump --master-data --single-transaction able to do online dump of InnoDB AND report reliable 2004-11-10 17:56:45 +01:00
lex_symbol.h
lock.cc Bug#18544 - LOCK TABLES timeout causes MyISAM table corruption 2006-04-19 22:54:25 +05:00
log.cc Fix for BUG#13023: "SQL Thread is up but doesn't move forward". Details in slave.cc; 2005-10-12 13:29:55 +02:00
log_event.cc BUG#16217 fix partly backported from 5.0. It is different in mysqlbinlog part. 2006-02-10 15:12:27 +02:00
log_event.h Fix for BUG#13023: "SQL Thread is up but doesn't move forward". Details in slave.cc; 2005-10-12 13:29:55 +02:00
Makefile.am WL#2928 Date Translation NRE 2006-07-04 17:40:40 +05:00
matherr.c
mf_iocache.cc
my_lock.c
mysql_priv.h --{skip-}merge option added which allows the user to disable merge engine and 2006-07-14 16:26:58 +05:00
mysqld.cc --{skip-}merge option added which allows the user to disable merge engine and 2006-07-14 16:26:58 +05:00
mysqld_suffix.h
net_serv.cc Merge selena.:H:/MYSQL/src/#05588-mysql-4.0 2005-09-07 14:59:41 +04:00
nt_servc.cc
nt_servc.h
opt_range.cc Merge spetrunia@bk-internal.mysql.com:/home/bk/mysql-4.1 2006-07-01 01:55:43 +04:00
opt_range.h BUG#12915: Added single-table UPDATE/DELTE ... ORDER BY ... LIMIT 2005-09-30 15:21:37 +04:00
opt_sum.cc Merge april:devel/BitKeeper/mysql-4.1 2006-06-21 17:51:16 +05:00
password.c A fix for Bug#13944 "libmysqlclient exporting sha1_result function": 2006-01-11 17:31:52 +03:00
procedure.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
procedure.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
protocol.cc A fix and a test case for Bug#15613 "libmysqlclient API function 2006-01-18 22:50:31 +03:00
protocol.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
protocol_cursor.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
records.cc Added more tests for new UPDATE ... ORDER BY ... LIMIT optimization 2005-10-25 02:27:40 +03:00
repl_failsafe.cc fix for Valgrind errors: query_id needs to be inited early (already fixed in 5.0 by Konstantin) and so does client_capabilities (not fixed in 5.0); 2005-10-14 15:34:52 +02:00
repl_failsafe.h Merge with 4.0 for 4.1 release 2004-10-06 19:14:33 +03:00
set_var.cc --{skip-}merge option added which allows the user to disable merge engine and 2006-07-14 16:26:58 +05:00
set_var.h WL#2928 Date Translation NRE 2006-07-04 17:40:40 +05:00
slave.cc fix for Valgrind errors: query_id needs to be inited early (already fixed in 5.0 by Konstantin) and so does client_capabilities (not fixed in 5.0); 2005-10-14 15:34:52 +02:00
slave.h Fix for BUG#13023: "SQL Thread is up but doesn't move forward". Details in slave.cc; 2005-10-12 13:29:55 +02:00
spatial.cc Review of new pushed code 2005-11-01 13:00:02 +02:00
spatial.h gcc 4.1 linux warning fixes backported from 5.0. 2006-06-28 16:28:29 +03:00
sql_acl.cc Merge abarkov@bk-internal.mysql.com:/home/bk/mysql-4.1 2006-07-07 12:17:00 +05:00
sql_acl.h Fix for bug #12423 "Deadlock when doing FLUSH PRIVILEGES and GRANT in 2005-09-01 16:52:59 +04:00
sql_analyse.cc Merged code. Removed unneccessary repeating. 2005-09-13 18:11:51 +03:00
sql_analyse.h Add ifdefs to control when "#pragma implementation" should be used 2005-05-26 12:09:14 +02:00
sql_base.cc BUG#20919 temp tables closing fails when binlog is off 2006-07-10 00:26:26 +03:00
sql_bitmap.h terminal.c, sql_bitmap.h, my_sys.h, configure.in, config.h: 2005-05-05 09:15:14 +02:00
sql_cache.cc WL#2928 Date Translation NRE 2006-07-04 17:40:40 +05:00
sql_cache.h Merge sanja.is.com.ua:/home/bell/mysql/bk/work-4.0 2005-09-06 12:18:23 +03:00
sql_class.cc Merge moonbone.local:/home/evgen/bk-trees/mysql-4.1 2006-07-18 23:30:09 +04:00
sql_class.h Merge epotemkin@bk-internal.mysql.com:/home/bk/mysql-4.1-opt 2006-07-11 17:35:36 +04:00
sql_client.cc
sql_crypt.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
sql_crypt.h Add ifdefs to control when "#pragma implementation" should be used 2005-05-26 12:09:14 +02:00
sql_db.cc Bug #15302 LOAD DATA FROM MASTER -> Packets out of order (Found: 2, expected 1) 2006-01-31 12:47:22 +01:00
sql_delete.cc Bug#17137 Running "truncate table" on temporary table leaves the table open on a slave 2006-03-08 10:15:48 +01:00
sql_derived.cc fixed union types merging and table related metadata (BUG#8824) 2005-03-23 08:36:48 +02:00
sql_do.cc Fix for bug #6765 "Implicit access to time zone description 2004-12-09 13:31:46 +03:00
sql_error.cc abort storing query to query cache if warnings appeared (BUG#9414) 2005-06-28 00:52:21 +03:00
sql_handler.cc Re-run fix-fields on condition if table was reopened in HANDLERREAD 2006-01-10 19:13:12 +02:00
sql_help.cc * Added comments and one assert 2004-12-14 03:36:19 +03:00
sql_insert.cc Fix calls to free_underlaid_joins() in INSERT, DELETE, and UPDATE 2005-12-08 12:33:33 -08:00
sql_lex.cc A fix and a test case for Bug#19399 "res 'Lost Connection' when 2006-07-06 23:59:04 +04:00
sql_lex.h Fixed bug #14927. 2006-05-06 23:48:13 -07:00
sql_list.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
sql_list.h merged 2005-05-18 22:14:08 +02:00
sql_load.cc Bug #17154 load data infile of char values into a table of char(PK) hangs 2006-02-07 00:03:39 +01:00
sql_locale.cc Backporting Kostja's changes made for 5.0 into 4.1. 2006-07-18 15:53:12 +05:00
sql_manager.cc
sql_manager.h
sql_map.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
sql_map.h Add ifdefs to control when "#pragma implementation" should be used 2005-05-26 12:09:14 +02:00
sql_olap.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
sql_parse.cc Merge bk@192.168.21.1:mysql-4.1 2006-07-13 22:32:18 +05:00
sql_prepare.cc A fix and a test case for Bug#19399 "res 'Lost Connection' when 2006-07-06 23:59:04 +04:00
sql_rename.cc Bug#6391 (binlog-do-db rules ignored) 2004-12-03 12:13:51 +01:00
sql_repl.cc Fix for BUG#12003 "assertion failure in testsuite (double lock of 2005-07-18 14:46:53 +02:00
sql_repl.h Remove DUP_IGNORE from enum_duplicates and instead use a separate ignore flag 2004-12-31 12:04:35 +02:00
sql_select.cc BUG#21206: memory corruption when too many cursors are opened at once 2006-07-26 16:23:07 +04:00
sql_select.h gcc 4.1 linux warning fixes backported from 5.0. 2006-06-28 16:28:29 +03:00
sql_show.cc Merge jamppa@bk-internal.mysql.com:/home/bk/mysql-4.1 2006-05-04 13:17:16 +03:00
sql_sort.h
sql_state.c
sql_string.cc Bug#15375 Unassigned multibyte codes are broken 2005-12-12 21:42:09 +04:00
sql_string.h Bug#19006: 4.0 valgrind problems (in test func_str) 2006-07-01 14:31:52 -04:00
sql_table.cc Merge bk@192.168.21.1:mysql-4.1 2006-05-04 00:03:58 +05:00
sql_test.cc Bug#12920 - key_read_requests counter appears to re-set 2005-09-14 13:18:16 +02:00
sql_udf.cc - backport of a compile fix from 4.1 (ChangeSet@1.2260.23.2 2005/05/19 from reggie) 2005-06-30 17:33:23 +02:00
sql_udf.h Merge bk-internal.mysql.com:/home/bk/mysql-4.1 2005-05-09 12:16:59 +02:00
sql_union.cc Fixed bug #18767. 2006-04-20 22:15:38 -07:00
sql_update.cc gcc 4.1 linux warning fixes backported from 5.0. 2006-06-28 16:28:29 +03:00
sql_yacc.yy Fixed bug #18767. 2006-04-20 22:15:38 -07:00
stacktrace.c Step 2 of the switch to support configuration with NPTL: 2005-04-20 20:38:57 +02:00
stacktrace.h Step 2 of the switch to support configuration with NPTL: 2005-04-20 20:38:57 +02:00
strfunc.cc - Housekeeping: removed a few unreferenced variables, noticed while doing 2005-01-11 15:38:03 +01:00
structs.h Better comments in KEY_PART_INFO struct 2006-06-14 21:06:02 +04:00
table.cc Merge bk-internal.mysql.com:/home/bk/mysql-4.1 2006-07-07 00:01:05 +04:00
table.h A fix and a test case for Bug#19399 "res 'Lost Connection' when 2006-07-06 23:59:04 +04:00
thr_malloc.cc Simpler arena swapping code 2004-11-08 01:13:54 +02:00
time.cc Bug#20729: Bad date_format() call makes mysql server crash 2006-07-11 13:06:29 -04:00
tzfile.h WL#1264 "Per-thread time zone support infrastructure". 2004-06-18 10:11:31 +04:00
tztime.cc Minor Netware specific changes. 2005-12-13 18:30:10 +02:00
tztime.h BUG#10241 cygwin port: invalid pragma interface directives 2005-05-04 15:05:56 +02:00
udf_example.cc Ensure that we free memory used with --order-by-primary (in mysqldump) 2004-12-09 12:47:20 +02:00
uniques.cc
unireg.cc Review of new code: 2005-07-27 13:05:30 +03:00
unireg.h Fixed bug#14169: type of group_concat() result changed to blob if tmp_table was 2006-04-12 23:05:38 +04:00
watchdog_mysqld