Bug ID 619849: In rare cases, TMM will enter an infinite loop and be killed by sod when the system has TCP virtual servers with verified-accept enabled.

Last Modified: Sep 13, 2023

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

Known Affected Versions:
11.4.1, 11.5.0, 11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 12.0.0, 12.0.0 HF1, 12.1.0 HF1, 12.0.0 HF2, 12.1.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2 HF1, 11.6.3.3, 11.5.7

Opened: Sep 30, 2016

Severity: 3-Major

Symptoms

TMM crashes with a SIGABRT (killed by sod)

Impact

Traffic disrupted while TMM restarts.

Conditions

TCP (full proxy) virtual servers with verified-accept enabled in the TCP profiles, that must be handling traffic. This issue occurs extremely rarely.

Workaround

disable verify accept.

Fix Information

the loop is fixed.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips