database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-07 00:04:31 +03:00
Code Activity

MDEV-24084 Fix race between disconnect and KILL CONNECTION

Browse Source 
Prior to this patch, it is possible to access freed memory
(THD::event_scheduler) from tp_post_kill_notification().

With this patch, memory is freed only when THD is no more accessible
from other threads, i.e after it is removed from the thread_list.
This commit is contained in:
Vladislav Vaintroub
2020-11-24 08:45:04 +01:00
parent 75e7132fca
commit 08b0b70daa
1 changed files with 1 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
sql/threadpool_common.cc
View File

@@ -202,12 +202,11 @@ void tp_callback(TP_connection *c)
error: error:
c->thd= 0; c->thd= 0;
delete c;
if (thd) if (thd)
{ {
threadpool_remove_connection(thd); threadpool_remove_connection(thd);
} }
delete c;
worker_context.restore(); worker_context.restore();
} }