Bug ID 423153: MDS connection may introduce memory leak

Last Modified: Feb 13, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.3.0, 11.4.0

Fixed In:
11.4.0 HF3

Opened: Jun 12, 2013
Severity: 3-Major
Related AskF5 Article:
K14474

Symptoms

If MDS connection is used, and mds connection failed to open there will be 128 bytes memory leak every time. for example an irule using hsl like : when CLIENT_ACCEPTED { set hsl [HSL::open -proto UDP -pool pool_hsl] log local0. "$hsl" HSL::send $hsl "foo" } To cause mds connection fail, the easiest way is to use an HSL pool server to which the BIG-IP has no route.

Impact

memory leak

Conditions

Using mds connection such as HSL command in irule. mds connection fails

Workaround

avoid using HSL irule. Or fix configure to make mds connection always success

Fix Information

Using MDS connection will not leak memory any more.

Behavior Change