Bug ID 685254: RAM Cache Exceeding Watchdog Timeout in Header Field Search

Last Modified: Jan 30, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2, 12.1.2, 12.1.2 HF1, 12.1.2 HF2, 12.1.3, 12.1.3.1, 12.1.3.2, 12.1.3.3, 13.0.0, 13.0.0 HF1, 13.0.0 HF2, 13.0.0 HF3, 13.0.1, 13.1.0, 13.1.0.1, 13.1.0.2, 13.1.0.3, 13.1.0.4, 13.1.0.5, 13.1.0.6, 13.1.0.7, 13.1.0.8, 13.1.1, 13.1.1.1, 13.1.1.2, 13.1.1.3

Fixed In:
14.0.0, 13.1.1.4, 12.1.3.4

Opened: Sep 25, 2017
Severity: 2-Critical
Related AskF5 Article:
K14013100

Symptoms

SOD halts TMM while RAM cache is processing a header.

Impact

The search continues until a match is found in memory, or a NUL byte is encountered. If the search takes too long, sod kills RAM cache on a watchdog timeout violation.

Conditions

When RAM cache is attempting to match an ETag and fails to find it in the header field.

Workaround

No workaround at this time.

Fix Information

SOD no longer halts TMM while RAM cache is processing a header.

Behavior Change