No worries, thanks Philip.
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https://bugs.launchpad.net/bugs/2089318
Title:
kernel hard lockup in cgroups during eBPF workload
Status in linux package in Ubuntu:
Fix Rele
Hey Philip, were we able to get it into the patch for 1/8? Is it still
on track for release Feb 10?
Thanks!
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Title:
kernel hard loc
Hey friend - I hope you are well and had good holidays. Just checking in
here to understand when we're likely to be able to pull the fix from
Ubuntu mainline. Thanks in advance!
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Philip - we have no reports of kernel hangs in our staging environment
since the deployment. I think we can consider the patch to have fixed
the issue.
Thank you again for your hard work getting this patched! Have a lovely
holiday season.
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Thanks for your patience on this testing. Just confirming here that
Azure, GCP, AWS all built correctly with your change, we deployed the
fix this afternoon and are monitoring for any issues - will report
results tomorrow morning.
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Thank you Philip - we can only reproduce this in our own environment at
high load - so I think it will be hard to reproduce in a small
environment. I will test this today though and confirm the fix, thank
you again for your help :D
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Totally understand, thank you again for your help Philip!
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Title:
kernel hard lockup 5.15.0-1072-aws
Status in linux package in Ubu
Also - the build seems to work well for x86, but I get the following for
ARM:
```
root@ip-172-31-59-2:/home/ubuntu# apt list | grep
WARNING: apt does not have a stable CLI interface. Use with caution in
scripts.
invesalius-bin/focal 3.1.2-3build2 arm64
invesalius-examples/focal 3.1.
Thank you sir. Yes, that understanding is correct:
We're running Ubuntu 20.04 - 5.15 for Azure and GCP both.
And just so I understand - once this is merged into the Ubuntu 5.15
branch, we'll likely be able to pick it up from the official ubuntu
source in the new year?
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Thank you Philip - we're testing this now, but the building is looking
promising so far.
Would it be possible for us to get similar packages in azure/gcp as
well?
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Hey Philip, this is great thank you - is there any way we could get this
for Focal?
Or is there an easy way for me to install this kernel for focal from
your PPA?
When I list focal releases for your ppa I get the following:
```
> sudo apt --allow-unauthenticated update
...
Err:17 http://ppa.launc
Amazing, thank you Philip! Looking forward to testing :)
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https://bugs.launchpad.net/bugs/2089318
Title:
kernel hard lockup 5.15.0-1072-aws
Status in linux package in Ubun
Thank you Philip!
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https://bugs.launchpad.net/bugs/2089318
Title:
kernel hard lockup 5.15.0-1072-aws
Status in linux package in Ubuntu:
Triaged
Status in linux-aws-5.15
Philip Cox - I think we have an RCA.
Below is the call stack of “iptables” at the moment of the hang (which is same
across all collected kernel dumps):
```
crash> bt 25894
PID: 25894TASK: 89094bce8000 CPU: 1COMMAND: "iptables"
#0 [adb9456ab8f8] __schedule at a5ba8b8d
#1
Hey Philip,
Thank you for the response. We think we've isolated an eBPF program
we're running which might cause this interaction, I'll see on Monday if
I can get you some more information to help debug.
> 1) Can you please run the command:
apport-collect 2089318
Will aim to get you this o
Public bug reported:
Hi friends,
We hit a kernel hard lockup where all CPUs are stuck acquiring an
already-locked spinlock (css_set_lock) within the cgroup subsystem.
Below are the call stacks from a memory dump of a two-core system taken
on Ubuntu 20.04 (5.15 kernel) on AWS, but the same issue o
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