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Cisco Bug: CSCun68100 - Assert at sess/sgsn/sgsn-app/pmm/pmm_gtp.c:1538

Last Modified

Dec 25, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

14.0(43) 15.0(17) 15.0(19)

Description (partial)

Symptom:
Assertion failure at sess/sgsn/sgsn-app/pmm/pmm_gtp.c:1538
  Note: Invalid mm-context given in sgsn_app_gtp_pmm_event_dispatch
  Function: sgsn_app_gtp_pmm_event_dispatch()

Conditions:
scenario for reproducing issue:

- 3g Attach, Activate
- Suspend request from 2g
- SRNS, Suspend Ack, Iu rel
- SGSN context request from peer-sgsn
- Context rsp sent
- waiting for context ack
- 3g intra rau
- auth/security/srns/rab/accept
- Relocation required 
- Fwd relocation request to peer (DNS query)
- While waiting for dns rsp, context ack for previous transaction
- Now DNS response/timeout for fwd relocation request

This will lead to crash.
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Bug Details Include

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