Have seen such condition with Memory issue in the FPC. Check for any DDRIF memory issue or any UCODE data error in messages log or Syslog messages of the FPC. Also, check out for thread usage in the FPC, CPU graph or memory fragmentation of the FPC. Any core dump for this FPC? Any sort of DDOS violation for this FPC? We have seen issues in software pertaining to the thread usage/core dump generated. Please let know of the version involved.
E.g:
Segmentation Fault!
/usr/bin/pfe-app-wrapper: Starting pfe application /var/app/smpc.elf
Ukern boot
[LOG] jdid_main: JDID mode check failed
[LOG] iffpc_jam_core_module_init: Registering valid jam vectors
[LOG] Set the IP IRI for table #1 to 0x22000080
[LOG] IPV4 Init: Set the IP IRI to 0x22000080
[LOG] ddos_issu_helper_register: issu state is 0 at ddos startup
[LOG] ddos sock support init ...
[LOG] ddos sock connection proto in use 7 ...
[LOG] RSMON rsmon_msg_thread_init
[LOG] if_module_init: Zeroing out jam vectors