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

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

On Thu, Mar 06, 2025 at 06:44:42PM +0100, Borislav Petkov wrote:
> 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.
> 
> Looks like we need:
> 
>   4c585af7180c ("x86/boot/32: Temporarily map initrd for microcode loading")
> 
>  after all. Stupid 32-bit sh*t.
> 
>  Greg, ontop of what do you want this backported? Or should I send you a whole
>  set again with this patch in the right spot and you can apply the whole set
>  again?

Let me see if that backports cleanly...

Nope.

A backported version would be great. If you want to just send me a
single patch, or a whole new bundle, anything will work, whatever is
easier for you.

thanks,

greg k-h