Reset Search
 

 

Article

Kernel panic - not syncing: unhandled cache error

« Go Back

Information

 
TitleKernel panic - not syncing: unhandled cache error
Symptoms
Switch will not boot . You see this message when connecting to the switch by console.
Kernel panic - not syncing: unhandled cache error
Rebooting in 5 seconds..
Environment
  • Summit X250e
  • Summit X450a
  • Summit X450e
  • EXOS All
Cause
Kernel panic - not syncing: unhandled cache error
Rebooting in 5 seconds..
CPU 0: hard watchdog expiration warning EPC a0402b88(0xa0402b88) at jiffies 4294938821
CPU 0: hard watchdog expiration warning EPC a0402b88(0xa0402b88) at jiffies 4294938821
CPU 0: hard watchdog expiration warning EPC a0402b88(0xa0402b88) at jiffies 4294938821
CPU 0: hard watchdog expiration warning EPC a0402b88(0xa0402b88) at jiffies 4294938821
CPU 0: hard watchdog expiration warning EPC a0402b88(0xa0402b88) at jiffies 4294938821
CPU 0: hard watchdog expiration warning EPC a0402b88(0xa0402b88) at jiffies 4294938821
Kernel thread is stuck for 5 hardware watchdog timeouts. Reseting the system.
Resolution
Try rebooting the switch with the different image:

1. Reboot the switch by unplugging the power and plugging it back.

2. Press and hold the spacebar button while the switch is booting up.

3. If you enter into the BOOTSTRAP mode then:
a. It will take you to the BOOTROM interface.
b. Select the image that is currently not used type the command "boot 1" or "boot 2"

If the above steps prove unsuccessful, please contact Extreme Networks GTAC for troubleshooting.How to contact Extreme Networks Global Technical Assistance Center (GTAC)

Additional notes

Feedback

 

Was this article helpful?


   

Feedback

Please tell us how we can make this article more useful.

Characters Remaining: 255