Bug 2330652

Summary:	kernel-6.12.2-200.fc41 does not boot on Hyper-V
Product:	[Fedora] Fedora	Reporter:	Bojan Smojver <bojan>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED NEXTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	41	CC:	acaringi, adscvr, airlied, alciregi, bskeggs, hdegoede, hpa, josef, kernel-maint, linville, masami256, mchehab, ptalbert, steved, suraj.ghimire7, vkuznets
Target Milestone:	---
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Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2024-12-07 09:03:10 UTC	Type:	Bug
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Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Bojan Smojver 2024-12-05 20:18:42 UTC

1. Please describe the problem:

Installed packages from koji, rebooted the VM. Hangs after printing secure boot enabled.

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

kernel-6.12.2-200.fc41

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 :

Current kernel, 6.11.10-300.fc41 works fine.

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:

Install x86_64 packages from https://koji.fedoraproject.org/koji/buildinfo?buildID=2597245, specifically, kernel, kernel-core, kernel-modules and kernel-core-modules. Reboot.


5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:


Did not try yet.

6. Are you running any modules that not shipped with directly Fedora's kernel?:

No.

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.

It does not come to the points where logs would even be emitted. Hangs right after secure boot mode enabled line (tried turning off secure boot, hangs after printing kernel version, i.e. straight after grub calls it).

Comment 1 Bojan Smojver 2024-12-05 20:26:51 UTC

This is regresion in 6.12.2. Previous build, 6.12.1 boots fine.

Comment 2 Bojan Smojver 2024-12-05 23:08:27 UTC

Just tested the most recent Rawhide kernel: kernel-6.13.0-0.rc1.20241204gitfeffde684ac2.17.fc42. That boots.

Comment 3 Joachim Backes 2024-12-06 18:19:45 UTC

Can confirm this.

Regards

Joachim Backes

Comment 4 Bojan Smojver 2024-12-07 09:03:10 UTC

Fixed in 6.12.3.

Comment 5 Vitaly Kuznetsov 2024-12-20 10:44:19 UTC

Bojan, Joachim, as we may want to fix the problem in stable 6.12 kernels (e.g. c10s), could you please specify which Hyper-V version showed the faulty behavior?

Comment 6 Bojan Smojver 2024-12-20 11:02:56 UTC

I can get the version of Hyper-V from my laptop, but all kernels in 6.12 series work, except for .2, which was released with a known breakage.

Comment 7 Vitaly Kuznetsov 2024-12-20 12:36:53 UTC

Maybe you know which version of Windows this laptop runs?

Comment 8 Bojan Smojver 2024-12-20 20:14:17 UTC

Windows 10 22H2 OS Build 19045.5247
Hyper-V Manager 10.0.19041.1