Re: [REGRESSION] next/pending-fixes: (build) error: unknown warning option '-Wno-suggest-attribute=format'; did...

On Mon, Dec 15, 2025 at 5:32 PM Ihor Solodrai <[email protected]> wrote:
>
> On 12/15/25 5:25 PM, Stephen Rothwell wrote:
> > Hi all,
> >
> > On Mon, 15 Dec 2025 23:59:03 -0000 KernelCI bot <[email protected]> wrote:
> >>
> >> Hello,
> >>
> >> New build issue found on next/pending-fixes:
> >>
> >> ---
> >>  error: unknown warning option '-Wno-suggest-attribute=format'; did you mean '-Wno-property-attribute-mismatch'? [-Werror,-Wunknown-warning-option] in kernel/bpf/helpers.o (scripts/Makefile.build:287) [logspec:kbuild,kbuild.compiler.error]
> >> ---
> >>
> >> - dashboard: https://d.kernelci.org/i/maestro:32e32983183c2c586f588a4a3a7cda83311d5be9
> >> - giturl: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> >> - commit HEAD:  326785a1dd4cea4065390fb99b0249781c9912bf
> >>
> >>
> >> Please include the KernelCI tag when submitting a fix:
> >>
> >> Reported-by: kernelci.org bot <[email protected]>
> >>
> >>
> >> Log excerpt:
> >> =====================================================
> >>   CC      kernel/bpf/helpers.o
> >> error: unknown warning option '-Wno-suggest-attribute=format'; did you mean '-Wno-property-attribute-mismatch'? [-Werror,-Wunknown-warning-option]
> >>
> >> =====================================================
> >>
> >>
> >> # Builds where the incident occurred:
> >>
> >> ## defconfig on (arm64):
> >> - compiler: clang-21
> >> - config: https://files.kernelci.org/kbuild-clang-21-arm64-mainline-694097d2cbfd84c3cdba292d/.config
> >> - dashboard: https://d.kernelci.org/build/maestro:694097d2cbfd84c3cdba292d
> >>
> >>
> >> #kernelci issue maestro:32e32983183c2c586f588a4a3a7cda83311d5be9
> >>
> >> --
> >> This is an experimental report format. Please send feedback in!
> >> Talk to us at [email protected]
> >>
> >> Made with love by the KernelCI team - https://kernelci.org
> >>
> >
> > Presumably caused by commit
> >
> >  ba34388912b5 ("bpf: Disable false positive -Wsuggest-attribute=format warning")
>
> Hi Stephen,
>
> A potential hotfix is here:
> https://lore.kernel.org/bpf/[email protected]/
>
> Needs acks/nacks.

I removed the offending patch from bpf tree.