Re: Stable backport request: powerpc/mm radix_tlb warnings

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On Wed, Mar 01, 2023 at 10:33:55PM -0600, Daniel Díaz wrote:
> On Wed, 1 Mar 2023 at 22:31, Daniel Díaz <daniel.diaz@xxxxxxxxxx> wrote:
> > Hello!
> >
> > Would the stable maintainers please consider backporting the following
> > commit to the 5.15, 6.1, and 6.2 stable branches? It's been
> > build-tested and verified it fixes the problem described therein.
> >
> > commit d78c8e32890ef7eca79ffd67c96022c7f9d8cce4
> > Author: Anders Roxell <anders.roxell@xxxxxxxxxx>
> > Date:   Wed Aug 10 13:43:18 2022 +0200
> >
> >     powerpc/mm: Rearrange if-else block to avoid clang warning
> >
> > Clang (13, 14, 15, 16, nightly) warns as follows:
> > -----8<----------8<----------8<-----
> > arch/powerpc/mm/book3s64/radix_tlb.c:1191:23: error: variable 'hstart'
> > is uninitialized when used here
> >   __tlbiel_va_range(hstart, hend, pid,
> >                     ^~~~~~
> > arch/powerpc/mm/book3s64/radix_tlb.c:1191:31: error: variable 'hend'
> > is uninitialized when used here
> >   __tlbiel_va_range(hstart, hend, pid,
> >                             ^~~~
> > ----->8---------->8---------->8-----
> >
> > Those warnings make the builds fail.
> >
> > The same patch applies to 5.10 with fuzz 2 (offset -243 lines).
> > Attached is that updated patch.
> >
> > The code for 5.4 (and below) is different, so this patch would not apply there.
> >
> > Thanks and greetings!
> >
> > Daniel Díaz
> > daniel.diaz@xxxxxxxxxx
> 
> + stable mailing list

Now queued up, thanks.

greg k-h



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