Bug 2229766

Summary:	Linux Kernel version 6.4.7, 6.4.8, 6.4.9 and 6.4.10 freeze the computer at boot
Product:	[Fedora] Fedora	Reporter:	Evgueni Tzvetanov <evgueni>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	38	CC:	acaringi, adscvr, airlied, alciregi, bskeggs, dridi.boukelmoune, evgueni, hdegoede, hpa, jarod, josef, justinjereza, kernel-maint, lgoncalv, linville, masami256, mchehab, ptalbert, steved
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Evgueni Tzvetanov 2023-08-07 15:26:29 UTC

1. Please describe the problem:
I am running Fedora 38 on an old 2009 iMac. So far all versions from 36 with all upgrades and the corresponding kernel versions have behaved OK. However after upgrade of the kernel to version 6.4.7 the machine freezes during boot. I had to set the default boot kernel to be the previous version - 6.4.6. The only way to move on is to power-cycle the computer.

Update 9 August 2023: Happens with 6.4.8 too.
Update 11 August 2023: Happens with 6.4.9 too.
Update 14 August 2023: Happens with 6.4.10 too.

2. What is the Version-Release number of the kernel:
6.4.7, 6.4.8, 6.4.9, 6.4.10

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 :
Yes and I already described -- I reverted to booting with 6.4.6

4. Can you reproduce this issue? If so, please provide the steps to reproduce
the issue below:
It happens every time I boot on my hardware.
Update: Same with 6.4.8 - every time I reboot.
Update: Same with 6.4.9 - every time I reboot
Update: Same with 6.4.10 - every time I reboot

5. Does this problem occur with the latest Rawhide kernel? To install the
Rawhide kernel, run ```` followed by
``sudo dnf update --enablerepo=rawhide kernel``:
Have not tested yet with rawhide

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.

Impossible to attach this boot log, since the kernel freezes before anything is displayed at boot. I have no feedback whatsoever and no basis for any information. It is complete freez of the system, the exit of which is only a power-cycle.

Reproducible: Always

Comment 1 Justin Jereza 2023-08-09 10:34:44 UTC

I seem to be experiencing the same thing on a MacBook6,1 running silverblue. The last known working commit is 536e6f48f3b1ce98b250ec8247e6d8947dd256e8d8fc738092f8b313114787f2 - 38.20230724.0 (2023-07-24T00:47:54Z) with kernel-6.4.4-200.fc38.x86_64. Updating to commit 0d709914c6296f56068b76024ddc35c0210a9731025b18f55f85b96b191235f7 - 38.20230808.0 (2023-08-08T00:44:53Z) with kernel-6.4.7-200.fc38.x86_64 causes a freeze on boot and there are no logs that can be retrieved since it happens so early in the boot process. Same as reporter, I'm not running any kernel modules not shipped with Fedora.

Comment 2 Dridi Boukelmoune 2023-08-16 18:17:05 UTC

Same problem for me on a Juno Nyx laptop. After a fresh install from a live USB system I perform a first DNF upgrade and at this point it no longer boots out of the box (6.4.10), I have to select the previous kernel in the boot menu.

I have not tried anything like using a rawhide kernel.

Comment 3 Dridi Boukelmoune 2023-08-16 20:36:06 UTC

More details for my laptop:

- 6.2.9-300.fc38 (from f38 live installer) boots fine
- 6.4.10-200.fc38 seemingly freezes during boot
- 6.5.0-0.rc6.43.fc40 boots fine