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Cisco Bug: CSCvv80705 - 3850 switch may crash after entering banner login command

Last Modified

Oct 16, 2020

Products (1)

  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases

16.6.5

Description (partial)

Symptom:
On attempting to configure banner login, the switch reports log packet overrun, bad block pointer and crash signal. The same can be established from the crashinfo: 

CMD: 'banner login ^'
%Log packet overrun, PC 0xAAB19CCC94, format:
User:%s  logged command:%s
{banner text is displayed here}
^
CMD: 'end'
%SYS-5-CONFIG_I: Configured from console by {username}
CMD: 'write memory'
validblock_diagnose, code = 5

SYS-3-BADBLOCK: Bad block pointer {hexadecimal address}

Conditions:
banner login CLI entered with multi-line flag.
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