Bug ID 541916: tmm segfault: hud_process_upper

Last Modified: Aug 19, 2026

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

Known Affected Versions:
11.5.1, 11.5.1 hf1, 11.5.1 hf2, 11.5.1 hf3, 11.5.1 hf4, 11.5.1 hf5, 11.5.1 hf6, 11.5.1 hf7, 11.5.1 hf8, 11.5.1 hf9, 11.5.1 hf10, 11.5.1 hf11, 11.5.2, 11.5.2 hf1, 11.5.3, 11.5.3 hf1, 11.5.3 hf2, 11.5.4, 11.5.4 hf1, 11.5.4 hf2, 11.5.4 hf3, 11.5.4 hf4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Opened: Aug 26, 2015

Severity: 2-Critical

Symptoms

The tmm fails with a segmentation fault in hud_process_upper.

Impact

The tmm fails and restarts.

Conditions

This is a rarely occurring issue whose causes are not well understood.

Workaround

None.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips