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Thread: Cannot boot with Kernel 5.15.12

  1. #1
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    Unhappy Cannot boot with Kernel 5.15.12

    I did an update today - the Kernel was updated to 5.15.12.
    After a reboot, I'm unable to login, although I can still login using the previous Kernel 5.15.8.

    I've taken a photo of the error messages, but don't know what to do now.


  2. #2
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    Default Re: Cannot boot with Kernel 5.15.12

    That graphic is hard to read.

    If possible, plug in a USB and save the indicated file to that USB. I cannot read the file name, but presumably you can. And I don't know your computer. But I would guess that a USB formatted to FAT could be used, and just copy the file to there.

    And then file a bug report. See:
    openSUSE:Submitting bug reports
    openSUSE Leap 15.4 Beta; KDE Plasma 5.24.4;
    testing Tumbleweed.

  3. #3
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    Default Re: Cannot boot with Kernel 5.15.12

    Could you post the logs from the boot (either from journalctl or the path specified in the bottom)?

    From the image I can't personally make out the upper portion of the screen's text.

    Code:
    journalctl --no-pager -b -1 -g boot
    That will give you console output from the journal for the previous boot (current boot is 0, then counts down), and search for the pattern "boot" in the output.

    You can also replace "boot" with other keywords from the error messages.
    只要努力,就能成功
    With hard work, success is possible.

  4. #4
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    Default Re: Cannot boot with Kernel 5.15.12

    Quote Originally Posted by orbvs View Post
    Could you post the logs from the boot (either from journalctl or the path specified in the bottom)?
    It looks as if he is stuck in a dracut shell, and might not have the access to use journalctl.
    openSUSE Leap 15.4 Beta; KDE Plasma 5.24.4;
    testing Tumbleweed.

  5. #5
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    Default Re: Cannot boot with Kernel 5.15.12

    Thanks for the offer of help, but in trying to copy the file to a usb stick, I managed to break it further and end up with no grub menu at all, and unable to boot into anything.


    I tried to recover from there, but as I needed a working PC this morning, I decided to do a quick reinstall.


    I'm now running with the 5.15.12 kernel with no issues, so a bit baffled at what happened yesterday - possibly a problem with the new Kernel install?


    Apologies to all, and thanks for the offers of help.

  6. #6

    Default Re: Cannot boot with Kernel 5.15.12

    I actually got the same error but unfortunately in this scenario, my keyboard is not working to do anything to recover. Booting into the previous kernel (5.15.8-1-default) is working for now. Since a re-install seemed to help, I'll try that later for the kernel-related packages...let's see whether that helps but it would be good to know whether you @TWolf already tried that and it eventually broke your system for good

  7. #7
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    Default Re: Cannot boot with Kernel 5.15.12

    Quote Originally Posted by NicoK View Post
    I actually got the same error but unfortunately in this scenario, my keyboard is not working to do anything to recover. Booting into the previous kernel (5.15.8-1-default) is working for now. Since a re-install seemed to help, I'll try that later for the kernel-related packages...let's see whether that helps but it would be good to know whether you @TWolf already tried that and it eventually broke your system for good
    No, I never got round to a re-install of the kernel-related packages (tbh not something I thought of doing), I broke grub before I could do that and decided to do a full re-install instead.
    Be good to know if it works.

  8. #8

    Default Re: Cannot boot with Kernel 5.15.12

    I'm getting the same error, after updating this afternoon on my (old) Lenovo T420. Another more modern machine is fine with the same update.

    Someone said that they were able to run with the previous kernel? That sounds great, but I could not see an option for that. The grub "advanced" menu offers to boot in recovery mode, but it does not offer me an earlier kernel. Can anyone tell me how to do this?

    Alternatively, I can boot of the installation USB and go to "Recovery", but although that drops me at a root prompt, I don't know how to proceed from there.

    I can get "journalctl" output in emergency mode, but I'm not sure how to get it "off" the machine. I tried mounting /boot, but it says that "ext4" is unknown because (I guess) no modules are loading(?)

    Any suggestions would be appreciated.

  9. #9

    Default Re: Cannot boot with Kernel 5.15.12

    The main boot sequence has many messages that say, "BPF: [NNNNNNN] invalid name_offset [NNNNNNN]".

    The "journalctl" output has many similar messages, with "failed to validate module [<module name>] BTF: -22"

  10. #10

    Default Re: Cannot boot with Kernel 5.15.12

    Looks like a bugzilla opened for this here: https://bugzilla.opensuse.org/show_bug.cgi?id=1194455

    Title mentions VM but some of the comments say baremetal impacted also. I hit this on VM myself.

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