Symptom

C9200 experienced an unexpected reboot with the last reload reason being: Critical process fed fault on fp_0_0 (rc=134) System-reports are generated at the time of the event with a fed core file inside. Additionally, the following bootup logs might be seen: %PMAN-3-PROCHOLDDOWN: The process fed has been helddown (rc 134) %PMAN-0-PROCFAILCRIT: A critical process fed has failed (rc 134) %PMAN-3-RELOAD_SYSTEM: Reloading: Peer switch is not standby ready. System will be reloaded %STACKMGR-1-RELOAD: Reloading due to reason Critical process crash %PMAN-5-EXITACTION: Process manager is exiting: reload fp action requested %PMAN-5-EXITACTION: Process manager is exiting: reload cc action requested The root cause of the issue is that there is an overflow triggered by Flexible Netflow which corrupts the size of the next chunk's malloc header, which leads to a software exception.

Conditions

Have Netflow and AVC configured. Additionally, Flexible Netflow is configured with an exporter with an export-protocol of type v9 or ipfix. The following configuration is an example found in an affected device: flow exporter MERAKI_AVC destination local file-export default export-protocol ipfix <<<< option interface-table timeout 300 option application-table option application-attributes

Workaround

There are no known workarounds.

Further Problem Description