linux-kernel - Re: mix of ACPICA regression and EFISTUB regression (Was: kernel >= v6.2 no longer boots on Apple's Virtualization.framework (x86

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAG8fp8ReYLaNYO9LYE1WeeSDg1pO1hz3f-8_WPZkLVWbzzyCvg@mail.gmail.com>
Date:   Sun, 28 May 2023 03:34:28 +0900
From:   Akihiro Suda <suda.kyoto@...il.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Bagas Sanjaya <bagasdotme@...il.com>, linux-efi@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Regressions <regressions@...ts.linux.dev>,
        Linux x86 <x86@...nel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Linux ACPICA <acpica-devel@...ts.linuxfoundation.org>,
        Linux Stable <stable@...r.kernel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Jianmin Lv <lvjianmin@...ngson.cn>,
        Huacai Chen <chenhuacai@...ngson.cn>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Robert Moore <robert.moore@...el.com>
Subject: Re: mix of ACPICA regression and EFISTUB regression (Was: kernel >=
 v6.2 no longer boots on Apple's Virtualization.framework (x86_64); likely to
 be related to ACPICA)

> Are you using OVMF? Which versions of qemu and OVMF are you using?

I'm using Apple's Virtualization.framework, not QEMU.

It doesn't use UEFI when it directly loads bzImage.
( dmesg: https://bugzilla.kernel.org/attachment.cgi?id=304323 )

Despite that, it still expects LINUX_EFISTUB_MINOR_VERSION
(include/linux/pe.h) referred from arch/x86/boot/header.S to be 0x0.
I confirmed that the kernel can boot by just setting
LINUX_EFISTUB_MINOR_VERSION to 0x0.

Would it be possible to revert the LINUX_EFISTUB_MINOR_VERSION value
(not the actual code) to 0x0?
Or will it break something else?

Anyway, I'll try to make a request to Apple to remove the
LINUX_EFISTUB_MINOR_VERSION check.

2023年5月28日(日) 3:04 Ard Biesheuvel <ardb@...nel.org>:
>
> On Sat, 27 May 2023 at 20:00, Akihiro Suda <suda.kyoto@...il.com> wrote:
> >
> > [Resending as a plain text email]
> >
> > Turned out that this is a mixture of an ACPICA issue and an EFISTUB issue.
> >
> > Kernel v6.2 can boot by reverting the *both* of the following two commits:
> > - 5c62d5aab8752e5ee7bfbe75ed6060db1c787f98 "ACPICA: Events: Support
> > fixed PCIe wake event"
> > - e346bebbd36b1576a3335331fed61bb48c6d8823 "efi: libstub: Always
> > enable initrd command line loader and bump version"
> >
> > Kernel v6.3 can boot by just reverting e346bebb, as 5c62d5a has been
> > already reverted in 8e41e0a575664d26bb87e012c39435c4c3914ed9.
> > The situation is the same for v6.4-rc3 too.
> >
> > Note that in my test I let Virtualization.framework directly load
> > bzImage without GRUB (akin to `qemu-system-x86_64 -kernel bzImage`).
> > Apparently, reverting e346bebb is not necessary for loading bzImage via GRUB.
> >
>
> Are you using OVMF? Which versions of qemu and OVMF are you using?