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Cisco Bug: CSCus29400 - FCPC cores and triggers hap reset while allocating response payload

Last Modified

Feb 12, 2018

Products (10)

  • Cisco Nexus 6000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 5696Q Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases


Description (partial)

A Nexus 6000 or 56xx switch running 7.0(3)N1(1) may trigger a hap reset due to  an unexpected FCPC crash:

N6K %$ last message repeated 1 time
N6K%$ VDC-1 %$ %SYSMGR-2-SERVICE_CRASHED: Service "fcpc" (PID 4247) hasn't caught signal 6 (core will be saved).
N6K %$ VDC-1 %$ %SYSMGR-2-HAP_FAILURE_SUP_RESET: System reset due to service "fcpc" in vdc 1 has had a hap failure
N6K %$ VDC-1 %$ 22 05:35:42 %KERN-0-SYSTEM_MSG: [12049989.661356] Shutdown Ports.. - kernel
N6K %$ VDC-1 %$ 22 05:35:42 %KERN-0-SYSTEM_MSG: [12049989.698850]  writing reset reason 16, fcpc hap reset - kernel

FCPC crash can be seen with around 32 physical FC ports in the switch. The leak is less and can take days to crash. Happens only on 56xx nexus switch.
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