Bug ID 444387: iRule table operation on large data can crash tmm

Last Modified: Jul 18, 2026

Affected Product(s):
BIG-IP LTM(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

Fixed In:
11.6.0, 11.5.2

Opened: Jan 16, 2014

Severity: 3-Major

Related Article: K15476

Symptoms

When an iRule contains a table command which attempts to insert (set, add, replace subcommands) a large set of data (over 128k) and session mirroring is enabled, tmm will crash.

Impact

Traffic disrupted while tmm restarts.

Conditions

A large table insert operation and session mirroring. Example: table set my_table $excessive_data

Workaround

Revise iRule to avoid insert of large datum.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips