Bug ID 449526: LB::prime iRule with SIP filter can result in a core

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.1, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Opened: Feb 19, 2014

Severity: 2-Critical

Symptoms

Rarely LB::prime iRule with SIP filter can result in a tmm core due the flow control mechanism added in the SIP hudfilter and the fact that LB::prime, adds necessary count of prime messages in Q and calls mblb_connect synchronously which has the potential to traverse the entire serverside chain.

Impact

Rarely results in a core with LB::prime iRule. Traffic disrupted while tmm restarts.

Conditions

LB::prime iRule with SIP filter is used.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips