Re: next-20250407: qemu_x86_64 clang-20, clang-nightly no console log but gcc-13 boot pass

[Ard Biesheuvel]

On Mon, 7 Apr 2025 at 18:17, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote:
>
> On Mon, 7 Apr 2025 at 17:15, Naresh Kamboju <naresh.kamboju@xxxxxxxxxx> wrote:
> >
> > Regressions on qemu-x86_64 with clang-20 and clang-nightly on the
> > Linux next-20250407 and no console output.
> >
> > The gcc-13 builds boot pass on qemu-x86_64.
> >
> > First seen on the next-20250407.
> > Bad: next-20250407
> > Good:next-20250404
> >
> > * qemu-x86_64, boot
> >  - boot/clang-20-lkftconfig
> >  - boot/clang-20-lkftconfig-compat
> >  - boot/clang-nightly-lkftconfig
> >
> > Regression Analysis:
> > - New regression? Yes
> > - Reproducibility? Yes
> >
> > Boot regression: qemu_x86_64 clang-20, clang-nightly no console log
> > Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>
>
> Anders bisected this and found,
> # first bad commit:
>    [cc34e658c6db493c1524077e95b42d478de58f2b]
>    x86/boot: Move the early GDT/IDT setup code into startup/
>
> Lore report link,
>  - https://lore.kernel.org/all/CA+G9fYt4VVa3kUDR+ze05xM+fRmMBVfbBTsypUq5oOpAfuzjfg@xxxxxxxxxxxxxx/
>

Thanks for the report. I'll look into this.