Bug#1062073: grub-efi-amd64: GRUB 2.12 fails to boot with X64 exception

[Mate Kukri]

In that case, I strongly suspect the regression was already present in 2.12~rc1.

Unfortunately we have multiple years of GRUB changes here, and this
particular issue doesn't reproduce either on OVMF, or on any of my
test hardware.

Also what computer/motherboard model is it exactly? Do you have a
firmware release date? That seems like a vendor specific version
number, and it would be rather difficult to determine "UEFI
specification version", or "bugginess factor" from that.

If you could try older package versions between 2.06-n and 2.12-1, it
would be very helpful too, the more information we have, the more
likely we can do something about this.

Also I'll take a quick look at what code is in the GRUB image at the
crashing offset, but I suspect that won't be enough information to
workaround this.

Mate

On Wed, Jan 31, 2024 at 9:29 AM Morten Hein Tiljeset <mtiljeset at uber.com> wrote:
>
> Oh yeah, I should've included that. It was 2.06.
> I'm afraid I haven't tested 2.12~rc1 on this particular machine type.
>
> On Wed, Jan 31, 2024 at 10:27 AM Mate Kukri <mate.kukri at canonical.com> wrote:
> >
> > Hello,
> >
> > Do you happen to know the previous GRUB version you were running, was
> > it 2.06 or 2.12~rc1?
> >
> > Mate
> >
> > On Wed, Jan 31, 2024 at 9:21 AM Morten Hein Tiljeset <mtiljeset at uber.com> wrote:
> > >
> > > Package: grub-efi-amd64
> > > Version: 2.12-1
> > > Severity: important
> > >
> > > Dear Maintainer,
> > >
> > > Upgrading to GRUB 2.12 makes my system unbootable. It immediately breaks
> > > with the following error before giving me a chance to see any menu or
> > > get any better debug output.
> > >
> > > !!!! X64 Exception Type - 0D(#GP - General Protection)  CPU Apic ID - 00000000 !!!!
> > > ExceptionData - 0000000000000000
> > > RIP  - 000000005FDE0E22, CS  - 0000000000000038, RFLAGS - 0000000000210202
> > > RAX  - 0000000000000004, RCX - 0000000000000000, RDX - 0000000000000004
> > > RBX  - 5043414600000000, RSP - 000000006FC56008, RBP - 000000006FC56050
> > > RSI  - 000000004D0ABEFA, RDI - 5043414600000000
> > > R8   - 0000000000000053, R9  - 0000000000000001, R10 - 000000000001C201
> > > R11  - 000000006FC55B80, R12 - 000000000000001C, R13 - 00000000600651EC
> > > R14  - 000000005FDE0E1B, R15 - 0000000060065000
> > > DS   - 0000000000000030, ES  - 0000000000000030, FS  - 0000000000000030
> > > GS   - 0000000000000030, SS  - 0000000000000030
> > > CR0  - 0000000080000013, CR2 - 0000000000000000, CR3 - 000000006FAD6000
> > > CR4  - 0000000000000668, CR8 - 0000000000000000
> > > DR0  - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000
> > > DR3  - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400
> > > GDTR - 00000000698AD500 0000000000000047, LDTR - 0000000000000000
> > > IDTR - 0000000067949018 0000000000000FFF,   TR - 0000000000000000
> > > FXSAVE_STATE - 000000006FC55C60
> > > !!!! Find image (No PDB)  (ImageBase=000000005FDD8000, EntryPoint=000000005FDD9000) !!!!
> > >
> > > This is consistent across several similar machines, so I suspect a
> > > software regression rather than a hardware issue.
> > >
> > > FWIW the EFI BIOS is
> > > American Megatrends
> > > Version 2.20.1276
> > > Core Version 5.14
> > >
> > > I realize that this is not a lot to go on, but I would appreciate any
> > > hints on how to debug this issue.
> > >
> > > Best,
> > > Morten Hein Tiljeset
> > >
> > > _______________________________________________
> > > Pkg-grub-devel mailing list
> > > Pkg-grub-devel at alioth-lists.debian.net
> > > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/pkg-grub-devel