linux-kernel - Re: [linus:master] [x86/sme] 48204aba80: BUG:kernel_failed_in_early-boot_stage,last_printk:Booting_the_kernel(entry

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Message-ID: <CAMj1kXE97o_T61AJ6wRAOpUvzon-45fnsT2dGB0GBP1x7bfGaw@mail.gmail.com>
Date: Mon, 25 Mar 2024 16:39:26 +0200
From: Ard Biesheuvel <ardb@...nel.org>
To: Borislav Petkov <bp@...en8.de>
Cc: kernel test robot <oliver.sang@...el.com>, oe-lkp@...ts.linux.dev, lkp@...el.com, 
	linux-kernel@...r.kernel.org, Tom Lendacky <thomas.lendacky@....com>
Subject: Re: [linus:master] [x86/sme] 48204aba80: BUG:kernel_failed_in_early-boot_stage,last_printk:Booting_the_kernel(entry_offset:#)

On Sun, 24 Mar 2024 at 16:26, Borislav Petkov <bp@...en8.de> wrote:
>
> On Fri, Mar 22, 2024 at 05:03:18PM +0800, kernel test robot wrote:
> >
> >
> > Hello,
> >
> > kernel test robot noticed "BUG:kernel_failed_in_early-boot_stage,last_printk:Booting_the_kernel(entry_offset:#)" on:
> >
> > commit: 48204aba801f1b512b3abed10b8e1a63e03f3dd1 ("x86/sme: Move early SME kernel encryption handling into .head.text")
> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
> >
> > [test failed on linus/master 741e9d668aa50c91e4f681511ce0e408d55dd7ce]
> > [test failed on linux-next/master a1e7655b77e3391b58ac28256789ea45b1685abb]
> >
> > in testcase: boot
> >
> > compiler: gcc-12
> > test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
>
> My guest boots with your .config and SNB as CPU model:
>
> ...
> [    0.373770][    T1] smpboot: CPU0: Intel Xeon E312xx (Sandy Bridge) (family: 0x6, model: 0x2a, stepping: 0x1)
>
> Artefacts like:
>
> -initrd initrd-vm-meta-180.cgz
>
> or
>
> RESULT_ROOT=/result/boot/1/vm-snb/quantal-x86_64-core-20190426.cgz/x86_64-rhel-8.3-bpf/gcc-12/48204aba801f1b512b3abed10b8e1a63e03f3dd1/3
>
> I don't have and don't know how to generate here so I can't run your
> exact reproducer.
>

I ran the reproducer using the instructions, and things seem to work fine.

https://paste.debian.net/1311951/

Could you provide any information regarding the QEMU version and its
BIOS implementation?