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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


Description (partial)

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

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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