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

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

[Stephen Rothwell]

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Hi all,

On Mon, 15 Dec 2025 23:59:03 -0000 KernelCI bot <bot@kernelci.org> 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 <bot@kernelci.org>
> 
> 
> 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 kernelci@lists.linux.dev
> 
> Made with love by the KernelCI team - https://kernelci.org
> 

Presumably caused by commit

 ba34388912b5 ("bpf: Disable false positive -Wsuggest-attribute=format warning")

in the bpf tree.
-- 
Cheers,
Stephen Rothwell

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

[Ihor Solodrai]

On 12/15/25 5:25 PM, Stephen Rothwell wrote:
> Hi all,
> 
> On Mon, 15 Dec 2025 23:59:03 -0000 KernelCI bot <bot@kernelci.org> 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 <bot@kernelci.org>
>>
>>
>> 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 kernelci@lists.linux.dev
>>
>> 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/d80c77cf-c570-4f3b-960f-bbd2d0316fac@linux.dev/

Needs acks/nacks.

> 
> in the bpf tree.

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

[Alexei Starovoitov]

On Mon, Dec 15, 2025 at 5:32 PM Ihor Solodrai <ihor.solodrai@linux.dev> wrote:
>
> On 12/15/25 5:25 PM, Stephen Rothwell wrote:
> > Hi all,
> >
> > On Mon, 15 Dec 2025 23:59:03 -0000 KernelCI bot <bot@kernelci.org> 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 <bot@kernelci.org>
> >>
> >>
> >> 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 kernelci@lists.linux.dev
> >>
> >> 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/d80c77cf-c570-4f3b-960f-bbd2d0316fac@linux.dev/
>
> Needs acks/nacks.

I removed the offending patch from bpf tree.

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

[Alexei Starovoitov]

On Mon, Dec 15, 2025 at 5:37 PM Alexei Starovoitov
<alexei.starovoitov@gmail.com> wrote:
>
>
> I removed the offending patch from bpf tree.

All,

heads up. gmail doesn't like me :(
I see Steven's and Ihor's replies in lore, but nothing in my mailbox.

And Steven's reply was a couple hours ago.
Nothing in my spam either, and I was cc-ed directly!
So it's not mailing list delivery throttling.
Ouch.

If it looks like I'm ignoring your emails, it's not me. It's gmail fault.

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

[Ihor Solodrai]

On 12/15/25 5:37 PM, Alexei Starovoitov wrote:
> On Mon, Dec 15, 2025 at 5:32 PM Ihor Solodrai <ihor.solodrai@linux.dev> wrote:
>>
>> On 12/15/25 5:25 PM, Stephen Rothwell wrote:
>>> Hi all,
>>>
>>> On Mon, 15 Dec 2025 23:59:03 -0000 KernelCI bot <bot@kernelci.org> 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
>>>>
>>>> [...]
>>>>
>>>
>>> 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/d80c77cf-c570-4f3b-960f-bbd2d0316fac@linux.dev/
>>
>> Needs acks/nacks.
> 
> I removed the offending patch from bpf tree.

Thanks. The CI is green now at bpf/master tip (1d528e794f3d):
https://github.com/kernel-patches/bpf/actions/runs/20253601894