Bug ID 457293: Clustered Multiprocessing (CMP) peer connection is not removed in certain race conditions.

Last Modified: Oct 16, 2023

Affected Product(s):
BIG-IP LTM(all modules)

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.5.2, 11.4.1 HF9

Opened: Apr 15, 2014

Severity: 3-Major

Related Article: K25058432


The CMP peer connection could be left there without being swept out when the connection at origin is aborted too soon in the connection flow.


Connections are leaked up to reaching a point when the memory is consumed.


CMP with two tmm instances. Connection gets aborted.



Fix Information

When the origin CMP instance couldn't find the connection after its peer replied, re-send a REMOVE message to the peer to remove it.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips