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Cisco Bug: CSCur21570 - Prevent SPP from crashing due to Invalid buffer count

Last Modified

May 10, 2018

Products (8)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco ASR 9922 Router
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9904 Router
  • Cisco ASR 9006 Router
  • Cisco ASR 9001 Router
  • Cisco ASR 9912 Router

Known Affected Releases

5.1.2.BASE 5.1.3.BASE

Description (partial)

Symptom:
The SPP process may crash repeatedly with invalid buffer count.

Invalid buffer count PPORT = 9, LPORT = 4, PCOUNT = 87
RP/0/RSP0/CPU0:Oct  2 21:47:07.492 : dumper[60]: %OS-DUMPER-4-SIGSEGV : Thread 1 received SIGSEGV - Segmentation Fault
RP/0/RSP0/CPU0:Oct  2 21:47:07.492 : dumper[60]: %OS-DUMPER-4-SIGSEGV_INFO : Accessed BadAddr 0x280 at PC 0x280. Signal code 1 - SEGV_MAPPER. Address not mapped.

Since SPP is a mandatory process then a kernel crash will be seen after the SPP process cannot be restarted.

Conditions:
This has been seen on a ASR 9001 running 5.1.2 or 5.1.3
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
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