Re: [PATCH 6.6 000/147] 6.6.81-rc2 review

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Thu, Mar 06, 2025 at 10:59:35PM +0530, Naresh Kamboju wrote:
> On Thu, 6 Mar 2025 at 20:50, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 6.6.81 release.
> > There are 147 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> >
> > Responses should be made by Sat, 08 Mar 2025 15:13:38 +0000.
> > Anything received after that time might be too late.
> >
> > The whole patch series can be found in one patch at:
> >         https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.6.81-rc2.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.6.y
> > and the diffstat can be found below.
> >
> > thanks,
> >
> > greg k-h
> 
> 
> Regressions on i386 the defconfig builds failed with clang-20
> and gcc-13 the stable-rc 6.6.81-rc2.
> 
> First seen on the
>  Good: v6.6.78
>  Bad: v6.6.78-442-g8f0527d547fe
> 
> * i386 build
>   - clang-20-defconfig
>   - clang-nightly-defconfig
>   - gcc-13-defconfig
>   - gcc-8-defconfig
> 
> Regression Analysis:
>  - New regression? Yes
>  - Reproducibility? Yes
> 
> Build regression: i386 microcode core.c use of undeclared identifier
> 'initrd_start_early'
> Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
> 
> ## Build log
> arch/x86/kernel/cpu/microcode/core.c:198:11: error: use of undeclared
> identifier 'initrd_start_early'; did you mean 'initrd_start'?
>   198 |                 start = initrd_start_early;
>       |                         ^~~~~~~~~~~~~~~~~~
>       |                         initrd_start
> include/linux/initrd.h:18:22: note: 'initrd_start' declared here
>    18 | extern unsigned long initrd_start, initrd_end;
>       |                      ^
> 1 error generated.

Boris, this is due to your 6.6 backports, did you happen to test-build
i386?

thanks,

greg k-h