[fedora-arm] Re: System no longer bootable after latest update.

> >> Yesterday I (re-)installed my Rock Pi4 with F36 and then did an update.
> >>
> >> During the update there showed up various messages listed below. Afterwards the system didn't boot anymore.
> >>
> >> Last messages on screen:
> >>
> >> Started Plymouth-start.ser?e - Show Plymouth Boot Screen
> >> Started systems-ask-passw*uests to Plymouth Directory Watch.
> >> Reached target paths.target - Path Units.
> >> Reached target basic.target - Basic System.
> >
> > What were the messages before that, there could well be a lot of other
> > things that happen in the boot process prior to that that causes it to
> > stop there.
>
> Before that I got the EFI screen and could select a kernel, but the keyboard is not initialised so the system does respond to the cursor keys at all.

Is it the firmware shipped by Fedora or does it come from elsewhere?
Which model of Rock Pi 4 is it? Do you get all the early display
output? What device is the firmware running off? A cheap USB TTL is
often useful although I've send patches upstream for numerous devices
to fix things like keyboard/display.

> Kernel:
> 15.19.6-200.fc36 default selection and obviously installed by update
> 15.17.5-300.fc36 I guess the kernel install by installation image
>
> It follows the message in 1 line
> Booting ‚Fedora Linux (5.19.6-200.fc36.aarch64) 36 (Server Edition)'
>
> Displays several seconds, then a screen refresh and just the 4 lines

By "displays several seconds" do you mean kernel output or something else?

> >> Then nothing happened anymore.
> >
> > Does it just hang there? Does it eventually drop you to an emergency shell?
>
> Just hanging there, no emergency shell, unfortunately.

I've tried two

> 1 time (out of several tries) I got additional output:
>
> 10.951731. Unable zu handle kernel execute from non-executable memory at virtual address (16 x 0)
>
> and 27 lines of messages. I was able to take a picture with my phone which I am happy to send you if if helps.
>
> >
> >> One question is, how to fix it.
> >
> > Hard tell tell. Can you start by selecting the previous booting kernel
> > from the grub2 menu and see if that works. Debugging problems on arm
> > is no different to debugging on x86.
>
> For my case here it was a fresh installation, so there is no loss of data (though of course I'd like it up and running so I can use it productively. It runs my server monitoring software). But I think it is urgent to find the cause and fix it, before other users may be severely impaired.
>
>
>
> >
> >> The other question is how can such a disaster happen? With an item that is offered for download on the Fedora Server page, something like this should not happen.
> >
> > Fedora is a complex system of software with a lot of moving parts and
> > a lot of updates frrom F-36 GA -> latest updates.
>
>
> Yes, indeed. But we managed for years now to find such issues before we published an update - at least as far as I remember the updates of all our servers.
>
> >> Update messages
> >>
> >> Updating: selinux-policy-36.14-1.fc36.noarch 240/670
> >
> > You've included a very small part of the update, it shows there's 670
> > update transactions happening, you've included a random selection
> > between 240-248, then 251-255 then to 351-354 and then back to the
> > 250s. Why this selection? I'm guessing in here there's at least a new
> > kernel. What was the previously booting kernel and what was the one
> > you were trying to boot?
>
>
>
> I selected all item with an „unusual" message expecting one of those being the culprit. But obviously, it is the kernel.
>
> I can attach the m2 board to another machine and try to reconfigure grub to use the old kernel, if that helps.

So you're running it off a NVME card?

I've tested my Pinebook Pro which has a NVME in it and is a rk399
device and it's booting OK with the latest 5.19.6 F-37 kernel.

Peter
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