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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

7.0(3)N1(1)

Description (partial)

Symptom:
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

Conditions:
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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Bug Details Include

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