Bug ID 474388: TMM restart, SIGSEGV messages, and core

Last Modified: Nov 07, 2022

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

Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 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, 11.5.10, 11.5.2, 11.5.2 HF1, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.0 HF5, 11.5.3

Opened: Aug 04, 2014

Severity: 2-Critical

Related Article: K16957


Certain conditions might produce error messages similar to the following in the core file/tmm.log: -- RVAvpBigIP01 notice RIP=0x8cc872 -- RVAvpBigIP01 notice session_process_pending_event_callback ERROR: could not send callback to - ERR_NOT_FOUND.


Traffic disrupted while tmm restarts.


This occurs because of a race condition, one between the HTTP and APM-related profiles, for example, during which an APM-profile-related action completes after the HTTP-profile closes the connection. Note: Logs that occur without a core are not a symptom related to this issue.



Fix Information

The race condition that occurred has been fixed, so no APM-profile-related actions complete after the HTTP-profile closes the connection.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips