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Cisco Bug: CSCur82666 - tcam_mgr assert on Taiko in tm_result_free_frames

Last Modified

Jul 30, 2018

Products (18)

  • Cisco Carrier Routing System
  • Cisco CRS-1 Line Card Chassis (Dual)
  • Cisco CRS-X 8-Slot Single-Shelf System
  • Cisco CRS-1 16-Slot Line Card Chassis
  • Cisco CRS-3 Multishelf System
  • Cisco CRS-1 Line Card Chassis (Multi)
  • Cisco CRS-X Multishelf System
  • Cisco CRS-1 4-Slot Single-Shelf System
  • Cisco IOS XR Software
  • Cisco CRS-3 8-Slot Single-Shelf System
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Known Affected Releases


Description (partial)

%OS-DUMPER-4-CRASH_INFO : Crashed pid = 200817 (pkg/bin/tcam_mgr)

Commit replace; this will consistently trigger the tcam mgr crash and lc reload
Remove qos and flowspec configuration together; and the result may be the same as commit replace
Clear bgp; may result in tcam mgr crash only, reproduceability does not appear to be high with this trigger. The sequence in which the tcam frames have been filled by the 3 features can cause the flowspec frame to be freed by LPTS v6 compression due to "clear bgp *".  So the reproduecability depends on the sequence on how the tcam frames are created and deleted.
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