Hi, Sergey! Looks ok to push, thanks! On Jun 17, Sergey Vojtovich wrote:

revision-id: fa129a7d22656eff9a7d1fb137d22976e0f0cec1 (mariadb-10.0.25-7-gfa129a7) parent(s): 56ec3bdebd4a17ff59a487a988069f77bfc69aab committer: Sergey Vojtovich timestamp: 2016-06-17 12:52:35 +0400 message:

MDEV-9728 - Hard crash in metadata_lock_info

metadata_lock_info plugin called MDL_context::find_ticket() to obtain lock duration, which in turn iterates foreign thread private lists. These lists can be updated by owner thread without protection.

Fixed by iterating threads (instead of MDL locks and tickets) and obtaining data through APC.

Also fixed mdl_iterate_lock() to initialize iterator under prlock protection.

Regards, Sergei Chief Architect MariaDB and security@mariadb.org