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Cisco Bug: CSCub16444 - installing license with long PID hangs WLC's control plane

Last Modified

Feb 12, 2019

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

7.2(110.1)

Description (partial)

After attempting to load a license file with a too-long PID value, the emWeb process will hang for a few minutes.
This will block incoming telnet, ssh, http and https access into the WLC.

An error similar to the following will be seen in the CLI, if performing a "license install" operation:

Transfering licenses from tftp://10.95.42.154/PSJ15250D5K_20120720113758044.lic
element PID: Schemas validity error : Element 'PID': [facet 'maxLength'] The value has a length of '25'; this exceeds the allowed maximum length of '18'.
element PID: Schemas validity error : Element 'PID': 'AIR-CT2504-K9:PSJ15250D5K' is not a valid value of the local atomic type.

The msglog will show errors similar to:

*emWeb: Jul 20 18:46:26.002: %OSAPI-2-TASK_PRIORITY_INFO: 
osapi_task.c:2601 Jul 20 18:46:26 - TaskID 351706640 ('emWeb') osapi_prio 240 old_prio 240 pthread_prio 7 cur_prio 7 tickleTimer 30
*emWeb: Jul 20 18:46:26.002: %OSAPI-2-TASK_PRIORITY_INFO: osapi_task.c:2572 Jul 20 18:46:26 - TaskID 351706640 ('emWeb') osapi_prio 45 old_prio 240 pthread_prio 81 cur_prio 81 tickleTimer 30
*emWeb: Jul 20 18:46:26.002: %USMDB-3-MSGTAG029: usmdb_license.c:757 License operation failed with rc : Operation timed out..!!!

Symptom:
After attempting to load a license file with a too-long PID value, the emWeb process will hang for a few minutes.
This will block incoming telnet, ssh, http and https access into the WLC.

An error similar to the following will be seen in the CLI, if performing a "license install" operation:

Transfering licenses from tftp://10.95.42.154/PSJ15250D5K_20120720113758044.lic
element PID: Schemas validity error : Element 'PID': [facet 'maxLength'] The value has a length of '25'; this exceeds the allowed maximum length of '18'.
element PID: Schemas validity error : Element 'PID': 'AIR-CT2504-K9:PSJ15250D5K' is not a valid value of the local atomic type.

The msglog will show errors similar to:

*emWeb: Jul 20 18:46:26.002: %OSAPI-2-TASK_PRIORITY_INFO: 
osapi_task.c:2601 Jul 20 18:46:26 - TaskID 351706640 ('emWeb') osapi_prio 240 old_prio 240 pthread_prio 7 cur_prio 7 tickleTimer 30
*emWeb: Jul 20 18:46:26.002: %OSAPI-2-TASK_PRIORITY_INFO: osapi_task.c:2572 Jul 20 18:46:26 - TaskID 351706640 ('emWeb') osapi_prio 45 old_prio 240 pthread_prio 81 cur_prio 81 tickleTimer 30
*emWeb: Jul 20 18:46:26.002: %USMDB-3-MSGTAG029: usmdb_license.c:757 License operation failed with rc : Operation timed out..!!!

Conditions:
Trying to enter a license with an overly long PID value (e.g. 'AIR-CT2504-K9:PSJ15250D5K' rather than 'AIR-CT2504-K9').
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