Last Modified: Jul 12, 2023
Affected Product(s):
BIG-IP APM
Known Affected Versions:
11.4.0, 11.4.1
Fixed In:
11.5.0, 11.4.1 HF6
Opened: Nov 07, 2013 Severity: 3-Major Related Article:
K16080
Due to a bug in the interface between tmm and the vnic driver, it is possible for a very large TSO frame to be inserted into the ring buffer that the vnic driver uses to forward the packet to the kernel for further processing as input (routing, etc).
System panics and reboots, and posts a message similar to the following: emerg kernel: Kernel panic - not syncing: Fatal exception.
Requires tmm passing TSO frames greater than or equal to 64k (including mac level headers). Once this happens, the kernel takes a fault in the vnic driver and the kernel panics.
None
Processing has been added to handle data movement, which eliminates the error that occurred when tmm passed TSO frames greater than or equal to 64k.