Bug ID 687075: tmm ASSERT %s spdy pcb initialized

Last Modified: Sep 13, 2023

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

Known Affected Versions:
12.1.2, 12.1.3,,,,,,,, 12.1.4,, 12.1.5,,,, 12.1.6, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,

Fixed In:

Opened: Oct 04, 2017

Severity: 2-Critical

Related Article: K78238591


TMM may crash when using SPDY with iClient over iSession. System logs a message similar to the following: notice panic: ../modules/hudfilter/spdy/spdy.c:4108: Assertion "spdy pcb initialized" failed.


TMM crash. Traffic disrupted while tmm restarts.


Connections are abandoned by external client. These connections might be suffering from connection closing in mid-conversation.


Remove SPDY.

Fix Information

The system now handles this condition, so the tmm crash no longer occurs.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips