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Cisco Bug: CSCvs06591 - [BP-CUPS]- sgwdrv_store_clp_pdn_from_egtpc()

Last Modified

Oct 02, 2020

Products (2)

  • Cisco ASR 5000 Series
  • Cisco ASR 5500

Known Affected Releases

21.15.16 21.16.1 21.16.2 21.16.3 21.16.c2 21.16.c3 21.16.d0 21.17.0

Description (partial)

CRASH was observed when SGW Relocation is in progress(ST Pending) and we perform clear sub all local purge.

This issue can be reproduced with below steps:

1. Create a multipdn pure s or collapsed call.
2. Perform sgw relocation.
3. Hold the ST response for DSReq(SI = 1)
4. Perform the clear sub all local purge.
5. Due to this DSCfm will be not sent to MME, as a result a hanging session is created at egtpc ingress side.
6. Later if we perform s11 path failure, we can see the reported crash with above stack trace.
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