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Cisco Bug: CSCte28858 - cieIfPacketStats & cieIfInterfaceTable memleak on no such instance GET

Last Modified

May 15, 2018

Products (11)

  • Cisco Carrier Routing System
  • Cisco CRS-1 Line Card Chassis (Dual)
  • Cisco CRS-1 16-Slot Line Card Chassis
  • Cisco CRS-1 Line Card Chassis (Multi)
  • Cisco IOS XR Software
  • Cisco CRS-1 4-Slot Single-Shelf System
  • Cisco CRS-1 Fabric Card Chassis
  • Cisco CRS-1 8-Slot Line Card Chassis
  • Cisco CRS-1 8-Slot Single-Shelf System
  • Cisco CRS-1 16-Slot Single-Shelf System
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Known Affected Releases

3.6.3.BASE 3.8.2.ROUT 3.8.3.BASE 3.9.0.BASE 3.9.1.BASE 4.0.0.BASE

Description (partial)

Symptom:
A memory leak occurs when polling objects in the cieIfPacketStatsTable or cieIfInterfaceTable with SNMP GET operations that return NO_SUCH_INSTANCE errors.  

For release 3.6.3, the process 'snmpd' is effected.  For releases after 3.8.3, mibd_interface shows the leak.  The size of the leak is about 48-bytes in search_interface_table() and about 24 to 64-bytes in strdup() per failed get

Conditions:
Polling objects in the cieIfPacketStatsTable or cieIfInterfaceTable with ifIndex values that refer to valid interfaces in the ifTable but which are for interface types that do not support some of the objects in the cieIfInterfaceTable or cieIfPacketStatsTable.
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