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This commit is contained in:
Mattias Jonsson 2011-12-14 14:41:40 +01:00
commit 336c57f9ce
4 changed files with 40 additions and 0 deletions
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16
mysql-test/r/key_cache.result
View File

@ -365,3 +365,19 @@ Variable_name Value
key_cache_block_size 1536
SET GLOBAL key_cache_block_size= @bug28478_key_cache_block_size;
DROP TABLE t1;
#
# Bug#12361113: crash when load index into cache
#
# Note that this creates an empty disabled key cache!
SET GLOBAL key_cache_none.key_cache_block_size = 1024;
CREATE TABLE t1 (a INT, b INTEGER NOT NULL, KEY (b) ) ENGINE = MYISAM;
INSERT INTO t1 VALUES (1, 1);
CACHE INDEX t1 in key_cache_none;
ERROR HY000: Unknown key cache 'key_cache_none'
# The bug crashed the server at LOAD INDEX below. Now it will succeed
# since the default cache is used due to CACHE INDEX failed for
# key_cache_none.
LOAD INDEX INTO CACHE t1;
Table Op Msg_type Msg_text
test.t1 preload_keys status OK
DROP TABLE t1;

16
mysql-test/t/key_cache.test
View File

@ -248,3 +248,19 @@ SET GLOBAL key_cache_block_size= @bug28478_key_cache_block_size;
DROP TABLE t1;
# End of 4.1 tests
--echo #
--echo # Bug#12361113: crash when load index into cache
--echo #
--echo # Note that this creates an empty disabled key cache!
SET GLOBAL key_cache_none.key_cache_block_size = 1024;
CREATE TABLE t1 (a INT, b INTEGER NOT NULL, KEY (b) ) ENGINE = MYISAM;
INSERT INTO t1 VALUES (1, 1);
--error ER_UNKNOWN_KEY_CACHE
CACHE INDEX t1 in key_cache_none;
--echo # The bug crashed the server at LOAD INDEX below. Now it will succeed
--echo # since the default cache is used due to CACHE INDEX failed for
--echo # key_cache_none.
LOAD INDEX INTO CACHE t1;
DROP TABLE t1;

5
sql/sql_table.cc
View File

@ -5126,6 +5126,11 @@ bool mysql_assign_to_keycache(THD* thd, TABLE_LIST* tables,
DBUG_RETURN(TRUE);
}
pthread_mutex_unlock(&LOCK_global_system_variables);
if (!key_cache->key_cache_inited)
{
my_error(ER_UNKNOWN_KEY_CACHE, MYF(0), key_cache_name->str);
DBUG_RETURN(TRUE);
}
check_opt.key_cache= key_cache;
DBUG_RETURN(mysql_admin_table(thd, tables, &check_opt,
"assign_to_keycache", TL_READ_NO_INSERT, 0, 0,

3
storage/myisam/mi_preload.c
View File

@ -56,6 +56,9 @@ int mi_preload(MI_INFO *info, ulonglong key_map, my_bool ignore_leaves)
if (!keys || !mi_is_any_key_active(key_map) || key_file_length == pos)
DBUG_RETURN(0);
/* Preload into a non initialized key cache should never happen. */
DBUG_ASSERT(share->key_cache->key_cache_inited);
block_length= keyinfo[0].block_length;
if (ignore_leaves)