Reset Search
 

 

Article

Switch reloaded - CPU 1 Unable to handle kernel paging request

« Go Back

Information

 
TitleSwitch reloaded - CPU 1 Unable to handle kernel paging request
Symptoms
Switch Reboots/Crashes randomly after error: Slot-1: CPU 1 Unable to handle kernel paging request at virtual address

Following Logs are seen before crash:
 
 <Crit:Kern.Card.Alert> Slot-1: CPU 1: Kernel thread was stuck for 3.11 seconds, jiffies: 5009498688
 <Crit:Kern.Card.Emergency> Slot-1: Fatal exception: panic in 5 seconds
 <Crit:Kern.Card.Alert> Slot-1: CPU 0: Kernel thread was stuck for 3.12 seconds, jiffies: 5009498688
 <Crit:Kern.Card.Alert> Slot-1: CPU 1 Unable to handle kernel paging request at virtual address 0000000000000008, epc == ffffffff8056d584, ra == ffffffff80263ea0
Environment
  • EXOS All
  • Version 16.2
Cause
The crash is caused from CR xos0077350

Kernel crash occurs when a gptp stream enters a non-gptp enabled switch.
Resolution
Upgrade to version 16.2.5.4-patch1-20+
Additional notes
Similar Logs based on the crash:
@[<ffffffff8056d584>] __up+0x4/0x3c
@[<ffffffff80263ea0>] up+0x50/0x58
@[<ffffffffc3097d90>] bcm_dump_lmm_lmr_counters+0x660/0x1de8 [bcmpkt]
@[<ffffffff8056bcf4>] schedule+0x344/0x808

[<ffffffff8023c230>] dequeue_task_fair+0x60/0x118
[<ffffffff8023a34c>] pick_next_task_fair+0xa4/0xc8
[<ffffffff80263e00>] down_trylock+0x0/0x50
[<ffffffff80246220>] allow_signal+0x0/0xe8
Build directory: /data3/release-manager/16.2.5.4-patch1-12/summit_rmi

 

Feedback

 

Was this article helpful?


   

Feedback

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

Characters Remaining: 255