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Cisco Bug: CSCvv57612 - Sup crash due to watchdog timeout, owner_pc=ffffffff80258a4e held lock for x msec

Last Modified

Oct 19, 2020

Products (1)

  • CiscoPro Workgroup EtherSwitch Software

Known Affected Releases

7.2(1)D1(1)

Description (partial)

Symptom:
>> Sup crashes once/twice in a day, with "Reason: Watchdog Timeout"


`show system reset-reason`
----- reset reason for module 4 (from Supervisor in slot 4) ---
1) At 999999 usecs after Wed Sep  2 04:30:50 2020
    Reason: Watchdog Timeout
    Service: 
    Version: 7.2(1)D1(1)
	
Stack-trace :
=======

<0>[33281.861724] owner_pc=ffffffff80258a4e held lock for 32210 msec
<3>[33281.684132] rst_sm: No heartbeat from sysmgr. Last heartbeat at 4298262141. Killing process at 4298265482
<6>[33281.684200] dump_state_thread: Scheduled dump_state_task at 4298265482
<6>[33281.684335] dump_state: Started to dump state at 4298265482

<0>[33281.861724] DC3_WATCHDOG: ffff [1] SMP 
<0>[33281.861724] __die: Die type DC3_WATCHDOG 
<2>[33281.861724] KGDB: Waiting for remote debugge

Conditions:
>> N77-SUP2E
>>  SW  7.2(1)D1(1)
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