Symptom
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
Conditions
C9800-80 with client exclusion enabled and many clients are moving to exclusion-list with wrong PSK
