Loading...
Loading...
In rare circumstances, the Traffic Management Microkernel (TMM) process may produce a core file while processing fragmented packets. As a result of this issue, you may encounter one or more of the following symptoms: -- TMM generates a core file in the /shared/core directory. -- In one of the /var/log/tmm log files, you observe an error message similar to the following example: notice panic: ../base/flow_fwd.c:255: Assertion "ffwd flag set" failed. panic: ../net/packet.c:168: Assertion "packet is locked by a driver" failed. notice ** SIGFPE **
The BIG-IP system temporarily fails to process traffic while the TMM process restarts. If the BIG-IP system is configured for high availability (HA), the system fails over to a peer system.
This issue occurs when all of the following conditions are met: -- The TMM process offloads a fragmented packet by way of an ffwd operation. -- Your BIG-IP system is under heavy load.
None.
Fragmented packets no longer cause tmm to core under heavy load.
Click on a version to see all relevant bugs
F5 Integration
Learn more about where this data comes from
BugZero Plan
Streamline upgrades with automated vendor bug scrubs
BugZero Prevent
Wish you caught this bug sooner? Get proactive today.