database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

MDEV-23824 SIGSEGV in end_io_cache on REPAIR LOCAL TABLE for Aria table

Browse Source 
Bugs fixed:
- prepare_for_repair() didn't close all open files if table opened failed
  because of out-of-memory
- If dd_recreate_table() failed, the data file was not properly restored
  from it's temporary name
- Aria repair initializing code didn't properly clear all used structs
  before calling error, which caused crashed in memory-free calls.
- maria_delete_table() didn't register if table open failed. This could
  calls my_error() to be called without returning 1 to the caller, which
  cased failures in my_ok()

Note when merging to 10.5:
- Remove the #if MYSQL_VERSION from sql_admin.cc
This commit is contained in:
Monty
2020-10-30 15:33:18 +02:00
parent e6290a8270
commit a876121d24
6 changed files with 91 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
sql/sql_admin.cc
View File

@ -91,10 +91,10 @@ static int send_check_errmsg(THD *thd, TABLE_LIST* table,
static int prepare_for_repair(THD *thd, TABLE_LIST *table_list,
HA_CHECK_OPT *check_opt)
{
int error= 0;
int error= 0, create_error= 0;
TABLE tmp_table, *table;
TABLE_LIST *pos_in_locked_tables= 0;
TABLE_SHARE *share;
TABLE_SHARE *share= 0;
bool has_mdl_lock= FALSE;
char from[FN_REFLEN],tmp[FN_REFLEN+32];
const char **ext;
@ -207,6 +207,23 @@ static int prepare_for_repair(THD *thd, TABLE_LIST *table_list,
HA_EXTRA_NOT_USED, NULL);
table_list->table= 0;
}
else
{
/*
Table open failed, maybe because we run out of memory.
Close all open tables and relaese all MDL locks
*/
#if MYSQL_VERSION < 100500
tdc_remove_table(thd, TDC_RT_REMOVE_UNUSED,
table->s->db.str, table->s->table_name.str,
TRUE);
#else
tdc_release_share(share);
share->tdc->flush(thd, true);
share= 0;
#endif
}
/*
After this point we have an exclusive metadata lock on our table
in both cases when table was successfully open in mysql_admin_table()
@ -220,11 +237,8 @@ static int prepare_for_repair(THD *thd, TABLE_LIST *table_list,
goto end;
}
if (dd_recreate_table(thd, table_list->db.str, table_list->table_name.str))
{
error= send_check_errmsg(thd, table_list, "repair",
"Failed generating table from .frm file");
goto end;
}
create_error= send_check_errmsg(thd, table_list, "repair",
"Failed generating table from .frm file");
/*
'FALSE' for 'using_transactions' means don't postpone
invalidation till the end of a transaction, but do it
@ -237,6 +251,8 @@ static int prepare_for_repair(THD *thd, TABLE_LIST *table_list,
"Failed restoring .MYD file");
goto end;
}
if (create_error)
goto end;
if (thd->locked_tables_list.locked_tables())
{
@ -264,7 +280,8 @@ end:
if (table == &tmp_table)
{
closefrm(table);
tdc_release_share(table->s);
if (share)
tdc_release_share(share);
}
/* In case of a temporary table there will be no metadata lock. */
if (unlikely(error) && has_mdl_lock)
@ -592,6 +609,12 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
#endif
DBUG_PRINT("admin", ("table: %p", table->table));
if (table->schema_table)
{
result_code= HA_ADMIN_NOT_IMPLEMENTED;
goto send_result;
}
if (prepare_func)
{
DBUG_PRINT("admin", ("calling prepare_func"));
@ -650,12 +673,6 @@ static bool mysql_admin_table(THD* thd, TABLE_LIST* tables,
goto send_result;
}
if (table->schema_table)
{
result_code= HA_ADMIN_NOT_IMPLEMENTED;
goto send_result;
}
if ((table->table->db_stat & HA_READ_ONLY) && open_for_modify)
{
/* purecov: begin inspected */