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Cisco Bug: CSCum00643 - CCSIP cause crash when call is established

Last Modified

May 09, 2020

Products (1)

  • Cisco 3900 Series Integrated Services Routers

Known Affected Releases

15.3(3)M

Description (partial)

Symptom:
Router experience several crashes during the day.
UTC: %SIP-3-INTERNAL:  Corrupted scb 
000160: Dec  7 16:30:31.931 UTC: %SYS-2-INTSCHED: 'suspend' at level 0 , all interrupts disabled -Process= "CCSIP_SPI_CONTROL", ipl= 0, pid= 426

Crash was observed  while tryig to free the memory  allocated for handling the authentication.
showing it as 0X0D0D0D. So crashing  while trying to free this memory.


Conditions:
Here crash was seen during the month end when gw was on heavly load.  In crasing case first invite was being sent to which got challenged, then later REFER was being sent, but
no response seen, after 7 retattempts REFER is being challenged, but menawhile on other leg already call is seen in disconnecting state and memory realted to authen being freed so while trying to process REFER challenge crash observed.
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