Bug ID 423153: MDS connection may introduce memory leak

Last Modified: Jul 12, 2023

Affected Product(s):
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 Article: K14474


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.


memory leak


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


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

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips