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

Last Modified

Jul 14, 2020

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

Related Community Discussions

5.1.3 Feature Pack (FP) Content discussion board
This community page to share the content, delivery dates and more details on Feature Packs.   FP2 Content All DDTSs tracking changes in FP2. Features: ---------   Features CSCur18267: ASR9k - 512 Bundle Ethernet enhancement   Features CSCun46269: Need changes in LSPV and PI FIB to send engine type for hashing.   Features CSCur74985: BFD on bundle vlan not working on cluster after upgrade to 5.1.3   Features CSCun11455: Need changes in cpp ucode to send eng type for punt pkt.   Features CSCug63470: ...
Latest activity: Mar 15, 2016
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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