database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

MDEV-35078 Server crash or ASAN errors in mhnsw_insert

Browse Source 
when adding a column or index that uses plugin-defined
sysvar-based options with ALTER TABLE ... ADD, the server
was using the default value of the sysvar, not the current one.

CREATE TABLE was correctly using the current sysvar value.

Fix it so that new columns/indexes added in ALTER TABLE ... ADD
would use a current sysvar value. Existing columns/indexes
in ALTER TABLE would keep using the default sysvar value
(unless they had an explicit value in frm).
This commit is contained in:
Sergei Golubchik
2024-10-06 11:55:54 +02:00
parent 855aefb7b5
commit ea1e720391
7 changed files with 61 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
sql/create_options.cc
View File

@@ -220,6 +220,7 @@ static const size_t ha_option_type_sizeof[]=
@param option_list list of options given by user
@param rules list of option description by engine
@param suppress_warning second parse so we do not need warnings
@param create a new object is created, use current sysvar value
@param root MEM_ROOT where allocate memory
@retval TRUE Error
@@ -229,7 +230,7 @@ static const size_t ha_option_type_sizeof[]=
bool parse_option_list(THD* thd, st_plugin_int *plugin, void *option_struct_arg,
engine_option_value **option_list,
ha_create_table_option *rules,
bool suppress_warning, MEM_ROOT *root)
bool suppress_warning, bool create, MEM_ROOT *root)
{
ha_create_table_option *opt;
size_t option_struct_size= 0;
@@ -276,7 +277,7 @@ bool parse_option_list(THD* thd, st_plugin_int *plugin, void *option_struct_arg,
/*
Okay, here's the logic for sysvar options:
1. When we parse CREATE TABLE and sysvar option was not explicitly
1. When an object is created and sysvar option was not explicitly
mentioned we add it to the list as if it was specified with the
*current* value of the underlying sysvar.
2. But only if the underlying sysvar value is different from the
@@ -298,12 +299,12 @@ bool parse_option_list(THD* thd, st_plugin_int *plugin, void *option_struct_arg,
Note that if the option was set explicitly (not =DEFAULT) it wouldn't
have passes the if() condition above.
*/
if (!suppress_warning && opt->var &&
(thd->lex->sql_command == SQLCOM_CREATE_TABLE || seen))
if (opt->var && (create || seen))
{
// take a value from the variable and add it to the list
sys_var *sysvar= find_plugin_sysvar(plugin, opt->var);
DBUG_ASSERT(sysvar);
DBUG_ASSERT(!suppress_warning); // always warn when creating
if (!sysvar->session_is_default(thd))
{
@@ -438,14 +439,14 @@ bool parse_engine_table_options(THD *thd, handlerton *ht, TABLE_SHARE *share)
DBUG_ENTER("parse_engine_table_options");
if (parse_option_list(thd, ht, &share->option_struct, & share->option_list,
ht->table_options, TRUE, root))
ht->table_options, TRUE, FALSE, root))
DBUG_RETURN(TRUE);
for (Field **field= share->field; *field; field++)
{
if (parse_option_list(thd, ht, &(*field)->option_struct,
& (*field)->option_list,
ht->field_options, TRUE, root))
ht->field_options, TRUE, FALSE, root))
DBUG_RETURN(TRUE);
}
@@ -453,7 +454,7 @@ bool parse_engine_table_options(THD *thd, handlerton *ht, TABLE_SHARE *share)
{
if (parse_option_list(thd, ht, &share->key_info[index].option_struct,
& share->key_info[index].option_list,
ht->index_options, TRUE, root))
ht->index_options, TRUE, FALSE, root))
DBUG_RETURN(TRUE);
}
@@ -497,7 +498,7 @@ bool parse_engine_part_options(THD *thd, TABLE *table)
{
ht= part_elem->engine_type;
if (parse_option_list(thd, ht, &part_elem->option_struct,
&tmp_option_list, ht->table_options, TRUE, root))
&tmp_option_list, ht->table_options, TRUE, FALSE, root))
DBUG_RETURN(TRUE);
}
else
@@ -507,7 +508,7 @@ bool parse_engine_part_options(THD *thd, TABLE *table)
{
ht= sub_part_elem->engine_type;
if (parse_option_list(thd, ht, &sub_part_elem->option_struct,
&tmp_option_list, ht->table_options, TRUE, root))
&tmp_option_list, ht->table_options, TRUE, FALSE, root))
DBUG_RETURN(TRUE);
}
}