Last Modified: Oct 06, 2020
See more info
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, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8
12.0.0, 11.6.1, 11.5.3 HF2, 11.5.1 HF5
Opened: Mar 14, 2014
Related AskF5 Article: K15574
There is a bug caused by race condition in the library used by the AFM Sweep/flood feature. When the Sweep/flood feature is enabled, if one TMM process has multiple threads, one thread may attempt to access the memory released by another thread at some time. In this situation, TMM may crash due to access an invalid memory segment.
Traffic disrupted while tmm restarts.
(1) AFM sweep/flood enabled (2) A single TMM process has multiple threads. (3) race condition occurs
Disable thread or disable sweep/flood
TMM will not crash when enabling DOS sweep/flood detection feature regardless of threading.