Bug ID 748572: Occasionally ramcache might crash when data is sent without the corresponding event.

Last Modified: Jul 12, 2023

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

Known Affected Versions:
13.1.0,,,,,,,,, 13.1.1,,,,, 13.1.3,,,,,,, 13.1.4,, 13.1.5,, 14.0.0,,,,,, 14.0.1,, 14.1.0,,,,,, 14.1.2,,,,,,,,, 14.1.3

Fixed In:

Opened: Nov 02, 2018

Severity: 2-Critical


Ramcache filter causes crash when sending data without HUDCTL_RESPONSE while in CACHE_COLLECT event.


Traffic disrupted while tmm restarts.


When the access_policy_trace db variable is enabled, failure in insertion of policy path cookie in the header while sending a redirect to the client might cause the ramcache filter to SIGSEGV.


Turn off the access_policy_trace db variable.

Fix Information

The system now handles this scenario, so there is no longer a ramcache crash.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips