Last Modified: Apr 28, 2025
Affected Product(s):
F5OS All
Known Affected Versions:
F5OS-A 1.7.0
Fixed In:
F5OS-C 1.8.0, F5OS-A 1.8.0
Opened: Jul 28, 2023 Severity: 2-Critical
The line-dma-agent or vqf-dm occasionally hits a cosmetic failure state as the entire system is rebooting, leading to a core file being produced prior to shutdown. There is no problem with the state of the system.
A core file is observed on the system after the system finishes rebooting. This will happen during an upgrade from a version that is affected by this bug. The core file can be ignored.
Due to left over data on a communication buffer from the tcpdump daemon to the line-dma-agent, on live-upgrade reboot the line-dma-agent can segfault during its shutdown after the tcpdump daemon already has gone down.
None
The memory for the communication buffer between the line-dma-agent and the tcpdump daemon has been refactored so this is no longer a possibilty during shutdown. The only way this core care be seen now is if a system is live-upgrading from a version without the fix in the line-dma-agent to a new version with this fix, even then the core is completely cosmetic. Once the system is updated to a version with the fix the core will never be reproduce again on sequential upgrades/reboots.