Bug ID 1576229: TMM crashes when it receives an invalid packet fragment from driver.

Last Modified: Oct 19, 2025

Affected Product(s):
BIG_IP_NEXT(SPK) SPK(all modules)

Known Affected Versions:
1.7.7

Fixed In:
1.9.2, 1.7.8

Opened: Apr 05, 2024

Severity: 2-Critical

Symptoms

TMM crashes due to a failed assertion in Rx packet path -- Assertion "Rx cd is valid" failed.

Impact

TMM container is in a restart loop.

Conditions

TMM is deployed with dpdk driver.

Workaround

Use sock driver.

Fix Information

TMM gracefully handles such invalid packet fragments by dropping them and updating the driver stats to reflect the drop.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips