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Cisco Bug: CSCul68555 - sessmgr Assertion mme-app/app/mme_fw.c:639 mme_start_procedure()

Last Modified

Dec 24, 2016

Products (1)

  • Cisco ASR 5000 Series

Known Affected Releases

15.0(14)

Description (partial)

Symptom:
The assertion failures were seen under normal operation after upgrading to R15.0.52124. Service not impacted as backup takes over.

Conditions:
The scenario leading to this crash is as follows 

1. UE attaches to UE and moves to idle mode
2. UE sends Service request 
3. While MME is awaiting Initial-Context Setup response, MSC sends SGS Paging request for MT-Call
4. After Initial Context setup response, UE triggers MO-SMS 
5. After completion on IM exit, crash happens.
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