Comment 5 for bug 1882623
Revision history for this message
| Mahesh Saptasagar (maheshsaptasagar) wrote | #5 |
© 2004
Canonical Ltd.
•
Terms of use
•
Data privacy
•
Contact Launchpad Support
•
Blog
•
Careers
•
System status
•
0e1f616
(Get the code!)
Hi Team,
When kdumping on 4.15.18 kernel in an Azure instance, we observe quite frequently a stall on the kdump kernel, it gets blocked and soon we see a stack like the following:
INFO: rcu_sched detected stalls on CPUs/tasks:
1-...!: (0 ticks this GP) idle=488/0/0 softirq=1/1 fqs=0
(detected by 0, t=15002 jiffies, g=707, c=706, q=8457)
rcu_sched kthread starved for 15002 jiffies! g707 c706 f0x0 RCU_GP_WAIT_FQS(3) ->state=0x402 ->cpu=1
We tried porting this change https://<email address hidden>/ which seems to be the potential cause of above issue, but after this regular azure instance is hanging during the boot.
Please let me know if I am missing any patches to solve this issue.