Bug ID 442410: Error condition with connection mirroring and connection pooling (OneConnect) enabled

Last Modified: Apr 10, 2019

Bug Tracker

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

Known Affected Versions:
11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4

Fixed In:
11.6.0, 11.5.1 HF5, 11.4.1 HF9

Opened: Jan 08, 2014
Severity: 3-Major
Related AskF5 Article:
K16217

Symptoms

If connection mirroring is enabled on a BIG-IP HA configuration with connection pooling (OneConnect) also enabled, TMM on a standby member may core with a SIGFPE, after logging a message containing the following string in the TMM log: 'panic: TCP4: HUDEVT_EXPIRED (Connection expired) bad pcb magic (0x00585858)'.

Impact

TMM logs errors, generates SIGFPE messages and cores until connection mirroring is turned off.

Conditions

This may occur when enabling connection mirroring on a BIG-IP HA configuration with connection pooling (OneConnect) also enabled.

Workaround

You can use one of the following to work around the issue: -- Turn off connection mirroring. -- Turn off connection pooling (OneConnect).

Fix Information

Resolved TMM error message 'HUDEVT_EXPIRED (Connection expired) bad pcb magic (0x00585858)' and TMM core on standby member of HA configuration with connection mirroring and connection pooling (OneConnect) enabled.

Behavior Change