Last Modified: Sep 13, 2023
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1
Fixed In:
11.6.0, 11.5.2, 11.4.1 HF6
Opened: Aug 01, 2014 Severity: 3-Major Related Article:
K16072
If the IVS connection is closed while ICAP is processing an iRule that completes asynchronously, and if on resumption of procesing the ICAP response an abort occurs, the closing is still processed after the abort, resulting in an assertion "valid node" and a TMM crash.
TMM crash
Long-running iRule on an ICAP event. IVS connection is closed during iRule processing. ICAP server response causes abort (such as protocol error).
If possible, avoid commands that could complete asynchronously (like session table) in ICAP iRule events.
If the IVS connection is closed while ICAP is processing an iRule that completes asynchronously, and if on resumption of processioning the ICAP response an abort occurs, the closing is not processed after the abort, and no crash occurs.