Bug 2279734

Summary: Kernel 6.8.8 deadlocks with 100% cpu when run in qemu/kvm
Product: [Fedora] Fedora Reporter: Anders Blomdell <anders.blomdell>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 40CC: acaringi, adscvr, airlied, alciregi, bskeggs, hdegoede, hpa, jarod, josef, kernel-maint, linville, masami256, mchehab, ptalbert, steved
Target Milestone: ---Keywords: Regression
Target Release: ---   
Hardware: Unspecified   
OS: Linux   
Whiteboard:
Fixed In Version: kernel-6.8.10-200.fc39 kernel-6.8.10-300.fc40 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2024-05-22 01:21:19 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Anders Blomdell 2024-05-08 12:12:21 UTC
1. Please describe the problem:

When booting a single CPU VM with kernel 6.8.8 (6.8.7 is affected as well),
the VM hangs with 100% CPU on the host.

2. What is the Version-Release number of the kernel:

6.8.8

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :

Probably in 6.8.7

Reverting commit 07ed11afb68d94eadd4ffc082b97c2331307c5ea in 6.8.8 fixes the problem.


https://lore.kernel.org/all/20240502081641.457aa25f@gandalf.local.home/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3628e0383dd349f02f882e612ab6184e4bb3dc10


Reproducible: Always

Comment 1 Fedora Update System 2024-05-18 15:17:18 UTC
FEDORA-2024-92664ae6fe (kernel-6.8.10-300.fc40) has been submitted as an update to Fedora 40.
https://bodhi.fedoraproject.org/updates/FEDORA-2024-92664ae6fe

Comment 2 Fedora Update System 2024-05-18 15:17:45 UTC
FEDORA-2024-49fcf86f58 (kernel-6.8.10-200.fc39) has been submitted as an update to Fedora 39.
https://bodhi.fedoraproject.org/updates/FEDORA-2024-49fcf86f58

Comment 3 Fedora Update System 2024-05-19 02:11:17 UTC
FEDORA-2024-49fcf86f58 has been pushed to the Fedora 39 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-49fcf86f58`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-49fcf86f58

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 4 Fedora Update System 2024-05-19 03:01:55 UTC
FEDORA-2024-92664ae6fe has been pushed to the Fedora 40 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-92664ae6fe`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-92664ae6fe

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 5 Fedora Update System 2024-05-19 03:08:26 UTC
FEDORA-2024-88abd103c8 has been pushed to the Fedora 38 testing repository.
Soon you'll be able to install the update with the following command:
`sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2024-88abd103c8`
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2024-88abd103c8

See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.

Comment 6 Fedora Update System 2024-05-22 01:21:19 UTC
FEDORA-2024-49fcf86f58 (kernel-6.8.10-200.fc39) has been pushed to the Fedora 39 stable repository.
If problem still persists, please make note of it in this bug report.

Comment 7 Fedora Update System 2024-05-22 01:26:59 UTC
FEDORA-2024-92664ae6fe (kernel-6.8.10-300.fc40) has been pushed to the Fedora 40 stable repository.
If problem still persists, please make note of it in this bug report.