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Bug#13635833: MULTIPLE CRASHES IN FOREIGN KEY CODE WITH CONCURRENT DDL/DML

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There are two threads.  In one thread, dml operation is going on 
involving cascaded update operation.  In another thread, alter 
table add foreign key constraint is happening.  Under these 
circumstances, it is possible for the dml thread to access a 
dict_foreign_t object that has been freed by the ddl thread.  
The debug sync test case provides the sequence of operations.  
Without fix, the test case will crash the server (because of 
newly added assert).  With fix, the alter table stmt will return 
an error message.  
      
rb:947
approved by Jimmy Yang
This commit is contained in:
Annamalai Gurusami 2012-02-27 17:23:56 +05:30
commit c1615df32c
12 changed files with 186 additions and 25 deletions
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8
storage/innobase/include/db0err.h
View file

@ -1,6 +1,6 @@
/*****************************************************************************
Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
Copyright (c) 1996, 2012, Oracle and/or its affiliates. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
@ -11,8 +11,8 @@ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
@ -112,6 +112,8 @@ enum db_err {
limit */
DB_INDEX_CORRUPT, /* we have corrupted index */
DB_UNDO_RECORD_TOO_BIG, /* the undo log record is too big */
DB_TABLE_IN_FK_CHECK, /* table is being used in foreign
key check */
/* The following are partial failure codes */
DB_FAIL = 1000,