Last Modified: Apr 28, 2025
Affected Product(s):
BIG-IP LTM
Known Affected Versions:
10.0.0, 10.2.1, 10.2.3, 10.2.4, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 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, 11.5.1 HF10, 11.5.1 HF11
Fixed In:
11.6.0, 11.5.2, 11.4.1 HF9, 11.2.1 HF15, 10.2.4 HF12
Opened: Dec 05, 2013 Severity: 3-Major Related Article:
K17020
TMM will core with panic string "Request for segment from middle of queue."
Traffic disrupted while tmm restarts.
The conditions are infrequent and not all of them are known fully. TCP is in an invalid state for that particular flow, and this flow cannot continue anymore.
This issue has no workaround at this time.
The ASSERTing condition has been converted to RESET that particular flow with the RST cause "Request for segment from middle of queue." This has been decided to be better for product stability as one affected flow does not core the full tmm.