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Cisco Bug: CSCvs57390 - SmpBadMsg interrupts triggered by improper clearing of DLM register

Last Modified

Jan 07, 2020

Products (1)

  • Cisco Network Convergence System 5500 Series

Known Affected Releases

6.1.45.BASE

Description (partial)

Symptom:
SmpBadMsg interrupts are seen periodically. The interrupt is caused by bad internal messages sent by delete mechanism (DLM).
After resetting the delete mechanism, the interrupt disappeared, which means it wasn't reset properly on device setup.
	LC/0/1/CPU0:Nov 29 09:57:50.550 : fia_driver[136]: %PLATFORM-CIH-5-ASIC_ERROR_SPECIAL_HANDLE : fia[1]: A config-err error has occurred causing  performance loss transient. CMIC.CMIC_CMC0_IRQ_STAT4.SCH_0.Interrupt_Register.SmpBadMsg

Conditions:
- For the corresponding FIA and scheduler SMP_MSG_BAD_VAL register is set. If its not set it can be ignored.

RP/0/RP0/CPU0:Router#show controllers fia diagshell 1 "g SCH_INCORRECT_STATUS_MESSAGE" location 0/0/CPU0 

Node ID: 0/1/CPU0
SCH_INCORRECT_STATUS_MESSAGE.SCH0[0x14d]=0x60000000000800010104
   : <SMP_MSG_VAL=1,SMP_MSG_TYPE=8,SMP_MSG_SLOW_FACTOR=0,SMP_MSG_QUE=0,
   SMP_MSG_PQS=0,SMP_MSG_PORT=0,SMP_MSG_FLOW=0x10104,SMP_MSG_FAP=0,
   SMP_MSG_BAD_VAL=1>                                              <<<<<<<<<<<<<<<<<<<
SCH_INCORRECT_STATUS_MESSAGE.SCH1[0x14d]=0x40000000000e00006d7b
   : <SMP_MSG_VAL=1,SMP_MSG_TYPE=0xe,SMP_MSG_SLOW_FACTOR=0,SMP_MSG_QUE=0,
   SMP_MSG_PQS=0,SMP_MSG_PORT=0,SMP_MSG_FLOW=0x6d7b,SMP_MSG_FAP=0,
   SMP_MSG_BAD_VAL=0>
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