mariadb/innodb_mysql-master.opt at 36d83ee251bbf782cf67d765256d39d9fe92fc6c - mariadb - GitFox

database/mariadb

mirror of https://github.com/MariaDB/server.git synced 2025-05-31 08:42:45 +03:00

Georgi Kodinov b2c161c192 Bug #42419 : Server crash with "Pure virtual method called" on two concurrent

connections
The problem is that tables can enter open table cache for a thread without 
being properly cleaned up. This can happen if make_join_statistics() fails 
to read a const table because of e.g. a deadlock. It does set a member of 
TABLE structure to a value it allocates, but doesn't clean-up this setting 
on error nor does it set the rest of the members in JOIN to allow for 
automatic cleanup.
As a result when such an error occurs and the next statement depends re-uses 
the table from the open tables cache it will get it with this 
TABLE::reginfo.join_tab pointing to a memory area that's freed.
Fixed by making sure make_join_statistics() cleans up TABLE::reginfo.join_tab 
on error.

2009-02-19 17:30:03 +02:00

2 lines

29 B

Plaintext

Raw Blame History

--innodb-lock-wait-timeout=3