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Cisco Bug: CSCup14537 - Router crash occurs in cnfsm_exec as instance pointer looks to be stale

Last Modified

Apr 25, 2020

Products (1)

  • Cisco IOS

Known Affected Releases

15.2(4)M6.1

Description (partial)

Symptom:
Topology:
PSTN -- SIP -- CUBE -- SIP -- CUCM

Router is crashing very often. Crash can occur even during low call volume. Below message can be seen after router recovers from crash

Last reload type: Normal Reload 
Last reload reason: bus error at PC 0xB0D0B0D, address 0x0

IOS on router: c2900-universalk9-mz.SPA.152-4.M6a.bin 
Router Model: 2901

Conditions:
The router crash started occurring after router was upgraded to latest version 152-4.M6a.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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