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Cisco Bug: CSCte50870 - CPU hog due to SERIAL A'detect causes crash

Last Modified

Jan 24, 2017

Products (1)

Known Affected Releases

12.4(24)T2

Description (partial)

Symptoms: A Cisco AS5400 crashes due to a watchdog timeout. CPU hogs due to 
the "SERIAL A'detect" process are seen before the reload:

%SYS-3-CPUHOG: Task is running for (36000)msecs, more than (2000)msecs 
(36/6),process = SERIAL A'detect.

After some time the device crashes:

%SYS-2-WATCHDOG: Process aborted on watchdog timeout, process = SERIAL 
A'detect.

Conditions: The symptom is seen on a Cisco AS5400 that is running Cisco IOS 
Release 12.4(24)T2. The serial interfaces of the device are configured 
with "autodetect encapsulation xxx" and router system clock has been updated:

%SYS-6-CLOCKUPDATE: System clock has been updated from 10:42:09 UTC Wed May
19 2010 to 11:42:09 MET Wed May 19 2010, configured from console by console.
%SYS-6-CLOCKUPDATE: System clock has been updated from 11:42:09 MET Wed May
19 2010 to 12:42:09 MET-DST Wed May 19 2010, configured from console by 
console.
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Bug Details Include

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