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Cisco Bug: CSCup47260 - 3850 FED crash on member switch with %PDSLIB-3-OBJFREE

Last Modified

Dec 13, 2018

Products (1)

  • Cisco Catalyst 3850 Series Switches

Known Affected Releases


Description (partial)

A 3850 member switch will experience a FED crash:
%PDSLIB-3-OBJFREE: 1 fed:  A PACKET object at 0x8100 has already been freed

It is suspected that this was triggered in a corner-case timing event in how ICMP redirects are handled in the CPU queue. Another trigger condition that is required is when  "debug pds pktbuf-last" is enabled. 

Note: The output from "show debug" will NOT reflect whether any pds debugs are enabled.
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