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kroki/tomash@moonlight.intranet 1917a99270 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.
2006-07-27 13:59:15 +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 Bug #18005: Creating a trigger on mysql.event leads to server crash on scheduler startup 2006-06-27 17:16:02 -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
field.cc Fixed bug #14896. 2006-06-22 00:29:04 +04:00
field.h field.cc, field.h: 2006-06-21 01:14:53 +04:00
field_conv.cc Fix for BUG#18587: Function that accepts and returns TEXT 2006-05-10 23:16:30 +04:00
filesort.cc Move handling of suffix_length from strnxfrm_bin() to filesort to ensure proper sorting of all kind of binary objects 2005-10-14 00:04:52 +03:00
frm_crypt.cc
gen_lex_hash.cc a fix (#10742: Can't compile "sql_lex.cc" on AIX 5.2). 2005-05-19 18:56:01 +05:00
gstream.cc fixes for windows 64-bit compiler warnings 2005-06-13 12:41:15 +02:00
gstream.h
ha_archive.cc Manually merged 2006-06-17 02:57:50 +04:00
ha_archive.h Dean noticed that constant flush calls caused the archive stream file to flush empty buffers. This patch removes that behavior. 2006-04-20 18:23:04 -07:00
ha_berkeley.cc BUG#6554 Problem Building MySql on Fedora Core 3 2006-01-16 12:17:30 +01:00
ha_berkeley.h Fixes during review of new code 2005-11-03 22:42:25 +02:00
ha_blackhole.cc Revoking patch for Bug#10952 on behalf of Brian. 2006-07-10 20:46:05 +02:00
ha_blackhole.h Merge a193-229-222-105.elisa-laajakaista.fi:/home/my/bk/mysql-4.1 2005-08-26 15:56:52 +03:00
ha_federated.cc Merge pgalbraith@bk-internal.mysql.com:/home/bk/mysql-5.0 2006-06-28 10:11:43 -07:00
ha_federated.h BUG #19773 2006-06-28 12:18:21 -07:00
ha_heap.cc Manual merge 2006-03-30 17:14:55 +04:00
ha_heap.h Merge mysql.com:/opt/local/work/mysql-4.1-root 2006-02-02 18:17:18 +03:00
ha_innodb.cc Applying patch from SergeyV 2006-06-20 13:43:13 -04:00
ha_innodb.h foo2 2006-04-13 17:22:56 +09:30
ha_myisam.cc bug #15860 (SPATIAL keys in INNODB) 2006-04-12 22:05:23 +05:00
ha_myisam.h A fix and a test case for Bug#10760 and complementary cleanups. 2005-07-19 22:21:12 +04:00
ha_myisammrg.cc Revoking patch for Bug#10952 on behalf of Brian. 2006-07-10 20:46:05 +02:00
ha_myisammrg.h Bug#19648 2006-05-30 17:10:53 -07:00
ha_ndbcluster.cc Merge poseidon.ndb.mysql.com:/home/tomas/mysql-5.0 2006-07-04 12:08:57 +02:00
ha_ndbcluster.h Fix for Bug #19906 REPLACE doesn't update TEXT fields correctly 2006-06-21 09:36:50 +02:00
handler.cc Merge patch for bug #15195 from 5.0 -> 5.0-release (for 5.0.24) 2006-07-21 09:53:12 +02:00
handler.h Revoking patch for Bug#10952 on behalf of Brian. 2006-07-10 20:46:05 +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 Merge mysql.com:/usr/home/ram/work/mysql-4.1 2006-03-03 15:32:00 +04:00
init.cc Fixes during review of new pushed code 2005-08-12 13:54:42 +03:00
item.cc BUG#20769: Dangling pointer in ctype_recoding test case. 2006-06-30 09:26:36 +02:00
item.h BUG#20769: Dangling pointer in ctype_recoding test case. 2006-06-30 09:26:36 +02:00
item_buff.cc Fix for bug#19667 group by a decimal expression yields wrong result 2006-06-15 16:24:02 +05:00
item_cmpfunc.cc Bug#20783: Valgrind uninitialised warning in test case ctype_uca 2006-07-03 21:41:15 +02:00
item_cmpfunc.h item_cmpfunc.h, cast.result: 2006-06-15 16:39:18 +04:00
item_create.cc Bug#16461: connection_id() does not work properly inside trigger 2006-04-12 19:31:00 +04:00
item_create.h Fix for BUG#12335 (SP replication) : New binlogging strategy for stored PROCEDUREs/FUNCTIONs. 2005-08-25 17:34:34 +04:00
item_func.cc BUG#20769: Dangling pointer in ctype_recoding test case. 2006-06-30 09:26:36 +02:00
item_func.h BUG#20769: Dangling pointer in ctype_recoding test case. 2006-06-30 09:26:36 +02:00
item_geofunc.cc Merge ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-4.1 2005-10-31 11:54:36 +02:00
item_geofunc.h merging 2006-06-26 22:32:02 +05:00
item_row.cc Merge mysql.com:/opt/local/work/mysql-4.1-16365 2006-04-12 18:30:54 +04:00
item_row.h Merge mysql.com:/opt/local/work/mysql-4.1-16365 2006-04-12 18:30:54 +04:00
item_strfunc.cc BUG#20769: Dangling pointer in ctype_recoding test case. 2006-06-30 09:26:36 +02:00
item_strfunc.h Bug#19599 duplication of information_schema column value in a CONCAT expr with user var 2006-06-06 12:51:04 +05:00
item_subselect.cc Bug #19700: subselect returning BIGINT always returned it as SIGNED 2006-05-25 10:39:18 +03:00
item_subselect.h BUG#7549: Missing error message for invalid view selection with subquery. 2006-05-11 15:30:54 +03:00
item_sum.cc BUG#20769: Dangling pointer in ctype_recoding test case. 2006-06-30 09:26:36 +02:00
item_sum.h Post merge fix 2006-04-20 00:42:12 -07:00
item_timefunc.cc Manually merged 2006-06-17 02:11:12 +04:00
item_timefunc.h Manually merged 2006-06-17 02:11:12 +04:00
item_uniq.cc Merge with 4.1 2005-06-07 00:31:53 +03:00
item_uniq.h Inefficient usage of String::append() fixed. 2005-11-20 20:47:07 +02:00
key.cc Bug #13601: Wrong int type for bit 2006-04-04 17:54:58 -07:00
lex.h Fixed BUG#18949: Test case sp-goto is disabled 2006-04-18 11:07:34 +02:00
lex_symbol.h
lock.cc Bug#16986 - Deadlock condition with MyISAM tables 2006-06-26 19:14:35 +02:00
log.cc Merge mysql.com:/users/lthalmann/bkroot/mysql-5.0-rpl 2006-06-29 14:03:41 +02:00
log_event.cc A fix for Bug#19022 "Memory bug when switching db during trigger execution". 2006-06-28 23:47:45 +04:00
log_event.h Bug #16206: Superfluous COMMIT event in binlog when updating BDB in autocommit 2006-06-12 08:54:45 -04:00
Makefile.am Bug#19575 MySQL-shared-5.0.21-0.glibc23 causes segfault in SSL_library_init 2006-05-31 16:19:06 +02:00
matherr.c
mf_iocache.cc
my_decimal.cc Fix for bug #13573 (wrong data inserted for too big decimals) 2005-10-15 21:57:32 +05:00
my_decimal.h Fix for bug #13573 (wrong data inserted for too big decimals) 2005-10-15 21:57:32 +05:00
my_lock.c
mysql_priv.h Merge patch for bug #15195 from 5.0 -> 5.0-release (for 5.0.24) 2006-07-21 09:53:12 +02:00
mysqld.cc Merge patch for bug #15195 from 5.0 -> 5.0-release (for 5.0.24) 2006-07-21 09:53:12 +02:00
mysqld_suffix.h
net_serv.cc configure.in, net_serv.cc, compile-netware-END: 2006-06-17 00:30:02 +02:00
nt_servc.cc
nt_servc.h
opt_range.cc Merge mysql.com:/home/kgeorge/mysql/4.1/B4981 2006-06-02 15:35:40 +03:00
opt_range.h many warnings (practically safe but annoying) corrected 2006-01-03 17:54:54 +01:00
opt_sum.cc Merge may.pils.ru:/home/svoj/devel/mysql/BUG20357/mysql-4.1 2006-06-21 19:41:09 +05:00
parse_file.cc Fix for BUG#15921: DROP TRIGGER - can't be drop trigger created 2006-03-28 01:01:51 +04:00
parse_file.h Fix for BUG#15921: DROP TRIGGER - can't be drop trigger created 2006-03-28 01:01:51 +04:00
password.c Merge mysql.com:/opt/local/work/mysql-4.1-root 2006-01-11 17:49:56 +03:00
procedure.cc Merge with 4.1 2005-06-07 00:31:53 +03:00
procedure.h Merge neptunus.(none):/home/msvensson/mysql/bug10241 2005-05-09 11:26:48 +02:00
protocol.cc Fixes to embedded server to be able to run tests with it 2006-02-24 18:34:15 +02:00
protocol.h Fixes to embedded server to be able to run tests with it 2006-02-24 18:34:15 +02:00
records.cc Merge ua141d10.elisa.omakaista.fi:/home/my/bk/mysql-4.1 2005-10-27 23:43:20 +03:00
repl_failsafe.cc Bug #18607: LOAD DATA FROM MASTER fails because of INFORMATION_SCHEMA database 2006-04-21 18:26:39 -07:00
repl_failsafe.h pthread_handler_decl() changed to be ctags-friendly 2005-10-08 16:39:55 +02:00
set_var.cc Merge patch for bug #15195 from 5.0 -> 5.0-release (for 5.0.24) 2006-07-21 09:53:12 +02:00
set_var.h Fix yet another place with an obsolete explicit cast to byte *. 2006-06-27 15:39:43 +04:00
slave.cc slave.cc: 2006-07-25 20:00:18 +09:30
slave.h A fix for Bug#19022 "Memory bug when switching db during trigger execution". 2006-06-28 23:47:45 +04:00
sp.cc A fix and a test case for Bug#21002 "Derived table not selecting from a 2006-07-19 22:33:19 +04:00
sp.h A fix and a test case for 2006-06-27 00:47:52 +04:00
sp_cache.cc Fix use of "%*s" *printf() specifiers that were really meant to be 2005-10-06 17:37:24 -07:00
sp_cache.h BUG#12228: Post review fixes: Added test case, code cleanup. 2005-08-10 21:17:02 +00:00
sp_head.cc Merge bk-internal.mysql.com:/home/bk/mysql-5.0-runtime 2006-06-27 00:52:56 +04:00
sp_head.h A fix and a test case for 2006-06-27 00:47:52 +04:00
sp_pcontext.cc Fixed BUG#18949: Test case sp-goto is disabled 2006-04-18 11:07:34 +02:00
sp_pcontext.h Fixed BUG#18949: Test case sp-goto is disabled 2006-04-18 11:07:34 +02:00
sp_rcontext.cc BUG#18037: Fix stack corruption in THD::rollback_item_tree_changes(). 2006-05-15 12:01:55 +02:00
sp_rcontext.h BUG#18037: Fix stack corruption in THD::rollback_item_tree_changes(). 2006-05-15 12:01:55 +02:00
spatial.cc Merge sanja.is.com.ua:/home/bell/mysql/bk/work-bug1-5.0 2005-11-21 21:15:48 +02:00
spatial.h Fixed compiler warnings from gcc 4.0.2: 2006-02-25 17:46:30 +02:00
sql_acl.cc Bug#19857: When a user with CREATE ROUTINE priv creates a routine it results in NULL p/w 2006-06-28 12:40:17 +02:00
sql_acl.h Reapply fix for bug#16372 (Server crashes when test 'conc_sys' is running) 2006-05-06 11:25:59 +04:00
sql_analyse.cc Porting fix that allows others to include compiled code with different parsers. 2006-03-09 10:09:52 -08:00
sql_analyse.h Merge from 4.1 2005-05-26 21:01:55 +02:00
sql_array.h Fix for BUG#12335 (SP replication) : New binlogging strategy for stored PROCEDUREs/FUNCTIONs. 2005-08-25 17:34:34 +04:00
sql_base.cc Merge mysql.com:/home/mydev/mysql-5.0--main 2006-06-26 19:19:12 +02:00
sql_bitmap.h Bug#10932 - Building server with key limit of 128, makes test cases fail 2005-07-19 14:13:56 +02:00
sql_cache.cc Fixed BUG#15758: "Holding adaptive search latch in 2006-04-07 23:58:17 +04:00
sql_cache.h Fixed compiler warnings from gcc 4.0.2: 2006-02-25 17:46:30 +02:00
sql_class.cc A fix and a test case for Bug#21002 "Derived table not selecting from a 2006-07-19 22:33:19 +04:00
sql_class.h A fix and a test case for Bug#21002 "Derived table not selecting from a 2006-07-19 22:33:19 +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_cursor.cc Fixed BUG#15758: "Holding adaptive search latch in 2006-04-07 23:58:17 +04:00
sql_cursor.h A fix and a test case for Bug#6513 "Test Suite: Values inserted by using 2005-09-22 02:11:21 +04:00
sql_db.cc A fix for Bug#19022 "Memory bug when switching db during trigger execution". 2006-06-28 23:47:45 +04:00
sql_delete.cc BUG#18681: View privileges are broken 2006-05-26 11:47:53 +03:00
sql_derived.cc support of view underlying tables and SP functions security check added (BUG#9505) (WL#2787) 2005-10-28 00:18:23 +03:00
sql_do.cc Name resolution context added (BUG#6443) 2005-07-01 07:05:42 +03:00
sql_error.cc Add extre DBUG_PRINT in push_warning 2006-03-16 12:06:39 +01:00
sql_error.h Invalid DEFAULT values for CREATE TABLE now generates errors. (Bug #5902) 2005-04-01 15:04:50 +03:00
sql_handler.cc Bug#16986 - Deadlock condition with MyISAM tables 2006-06-26 19:14:35 +02:00
sql_help.cc many warnings (practically safe but annoying) corrected 2006-01-03 17:54:54 +01:00
sql_insert.cc Bug#20989: View '(null).(null)' references invalid table(s)... on SQL SECURITY INVOKER 2006-07-19 11:49:07 +02:00
sql_lex.cc Bug#17203: "sql_no_cache sql_cache" in views created from prepared statement 2006-06-27 21:28:32 +04:00
sql_lex.h Bug#17203: "sql_no_cache sql_cache" in views created from prepared statement 2006-06-27 21:28:32 +04:00
sql_list.cc a compiler must see '#pragma implementation' *before* 2005-06-05 19:38:52 +02:00
sql_list.h WL#2486 - Natural/using join according to SQL:2003. 2005-11-28 21:57:50 +02:00
sql_load.cc BUG#18681: View privileges are broken 2006-05-26 11:47:53 +03:00
sql_manager.cc Merge bk-internal.mysql.com:/home/bk/mysql-5.0 2005-10-12 00:59:52 +03:00
sql_manager.h
sql_map.cc WL#2286 - Compile MySQL w/YASSL support 2005-06-22 14:08:28 +05:00
sql_map.h Add ifdefs to control when "#pragma implementation" should be used 2005-05-26 12:09:14 +02:00
sql_olap.cc Implementation of WL#2486 - 2005-08-12 17:57:19 +03:00
sql_parse.cc A fix and a test case for Bug#21002 "Derived table not selecting from a 2006-07-19 22:33:19 +04:00
sql_prepare.cc Post-merge fixes. 2006-05-07 16:14:43 -07:00
sql_rename.cc Fix for bug #13525 "Rename table does not keep info of triggers". 2006-02-24 23:50:36 +03:00
sql_repl.cc foo2 2006-04-13 17:22:56 +09:30
sql_repl.h
sql_select.cc BUG#21206: memory corruption when too many cursors are opened at once 2006-07-27 13:59:15 +04:00
sql_select.h Merge rurik.mysql.com:/home/igor/mysql-4.1-opt 2006-06-02 17:06:10 -07:00
sql_show.cc bug #16832 (ALGORITHM missed in VIEW's information schema) 2006-06-13 17:23:43 +05:00
sql_sort.h
sql_state.c
sql_string.cc Merge mysql.com:/usr/home/bar/mysql-4.1.b15376 2006-03-23 12:41:28 +04:00
sql_string.h Netware specific changes. 2005-12-14 01:21:56 +02:00
sql_table.cc Revoking patch for Bug#10952 on behalf of Brian. 2006-07-10 20:46:05 +02:00
sql_test.cc Post-review changes. 2006-05-03 21:35:27 -07:00
sql_trigger.cc Merge bk-internal:/home/bk/mysql-5.0-runtime 2006-06-28 10:55:27 -07:00
sql_trigger.h Merge bk-internal.mysql.com:/home/bk/mysql-5.0-runtime 2006-02-26 16:38:48 +03:00
sql_udf.cc A fix and a test case for 2006-06-27 00:47:52 +04:00
sql_udf.h Bug#19904: UDF: not initialized *is_null per row 2006-06-08 13:25:28 -04:00
sql_union.cc Post merge fixes 2006-04-21 08:19:38 -07:00
sql_update.cc Bug #20784 Uninitialized memory in update on table with PK not on first column 2006-07-04 11:43:06 +02:00
sql_view.cc A fix and a test case for 2006-06-27 00:47:52 +04:00
sql_view.h Merge jamppa@bk-internal.mysql.com:/home/bk/mysql-5.0 2005-11-03 16:43:05 +02:00
sql_yacc.yy Bug#17203: "sql_no_cache sql_cache" in views created from prepared statement 2006-06-27 21:28:32 +04:00
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
structs.h Manually merged 2006-06-14 23:54:08 +04:00
table.cc Manual transfer of the following changeset into the 5.0.23 release clone: 2006-06-30 19:37:11 +02:00
table.h Fix compilation failures on Windows caused by the patch for Bug#17199. 2006-06-27 14:56:24 +04:00
thr_malloc.cc
time.cc Fixes during review of new pushed code 2005-07-31 12:49:55 +03:00
tzfile.h
tztime.cc A fix and a test case for 2006-06-27 00:47:52 +04:00
tztime.h Fix for bug#11081 "Using a CONVERT_TZ function in a stored function or 2006-04-24 18:57:00 +04:00
udf_example.cc Fix small bug in udf_example.cc, it was processing one char too much and thus returning junk 2006-04-28 11:37:20 +02:00
uniques.cc many warnings (practically safe but annoying) corrected 2006-01-03 17:54:54 +01:00
unireg.cc A fix and a test case for Bug#14210 "Simple query with > operator on 2005-11-03 14:20:13 +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