Comment 0 for bug 2032176

The kernel version seem to be the HWE kernel 5.19.0-46.47-22.04.1:
https://pastebin.canonical.com/p/wzJ6yZP9Rv/

The crash occurred on a juju machine, and the juju agent was lost.
The openstack console log indicts the it is related to spin_lock and KVM MMU:
[418200.348830] ? _raw_spin_lock+0x22/0x30
[418200.349588] _raw_write_lock+0x20/0x30
[418200.350196] kvm_tdp_mmu_map+0x2b1/0x490 [kvm]
[418200.351014] kvm_mmu_notifier_invalidate_range_start+0x1ad/0x300 [kvm]
[418200.351796] direct_page_fault+0x206/0x310 [kvm]
[418200.352667] __mmu_notifier_invalidate_range_start+0x91/0x1b0
[418200.353624] kvm_tdp_page_fault+0x72/0x90 [kvm]
[418200.354496] try_to_migrate_one+0x691/0x730
[418200.355436] kvm_mmu_page_fault+0x73/0x1c0 [kvm]

openstack console log: https://pastebin.canonical.com/p/spmH8r3crQ/

syslog: https://pastebin.canonical.com/p/wFPsFD8G9n/
The syslog was rotated after the crash occurred.

Other juju machine with 5.15.0.79.76 kernel seems to have the same issues.

We previously have a similar issue with 5.15.0-73. The juju machine crashed with raw_spin_lock and kvm mmu in the logs as well: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2026229

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-5.19.0-46-generic 5.19.0-46.47~22.04.1
ProcVersionSignature: Ubuntu 5.19.0-46.47~22.04.1-generic 5.19.17
Uname: Linux 5.19.0-46-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: amd64
CasperMD5CheckResult: unknown
CloudArchitecture: x86_64
CloudID: openstack
CloudName: openstack
CloudPlatform: openstack
CloudSubPlatform: metadata (http://169.254.169.254)
Date: Mon Aug 21 08:59:46 2023
Ec2AMI: ami-00000c61
Ec2AMIManifest: FIXME
Ec2AvailabilityZone: availability-zone-1
Ec2InstanceType: builder-cpu4-ram72-disk20
Ec2Kernel: unavailable
Ec2Ramdisk: unavailable
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: linux-signed-hwe-5.19
UpgradeStatus: No upgrade log present (probably fresh install)