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Cisco Bug: CSCvu71871 - C9800-80 crashes with SIGSEGV while removing timer RB tree color

Last Modified

Sep 24, 2020

Products (6)

  • Cisco Catalyst 9800 Series Wireless Controllers
  • Cisco Catalyst 9800-40 Wireless Controller
  • Cisco Catalyst 9800-L-C Wireless Controller
  • Cisco Catalyst 9800-80 Wireless Controller
  • Cisco Catalyst 9800-L-F Wireless Controller
  • Cisco Catalyst 9800-CL Wireless Controller for Cloud

Known Affected Releases


Description (partial)

C9800-80 running v16.12.3 crashes with SIGSEGV at timer_rb_tree_VS_RB_REMOVE_COLOR. System report with core file was generated in harddisk or bootflash. The last reload reason in 'show version' is vague.

Switch#show version 
System restarted at TIME and DATE
System image file is "bootflash:packages.conf"
Last reload reason: Reload reason not captured

C9800-80 with client exclusion enabled and many clients are moving to exclusionlist with worng PSK
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Bug Details Include

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