Re: linux-next: build failure after merge of the origin tree

[Mark Brown]

On Wed, Jun 17, 2026 at 04:02:43PM +0100, Mark Brown wrote:
> Hi all,
> 
> After merging the origin tree, today's linux-next build (perf.log perf)
> failed like this:
> 
> util/btf.c: In function '__btf_type__find_member_by_name':
> util/btf.c:19:43: error: comparison of integer expressions of different signedness: 'int' and '__u32' {aka 'unsigned int'} [-Werror=sign-compare]
>    19 |         for (i = 0, m = btf_members(t); i < btf_vlen(t); i++, m++) {
>       |                                           ^
> cc1: all warnings being treated as errors
> 
> Triggered by commit:
> 
>    f7a6b9eaff3e6 (bpf: Extend BTF UAPI vlen, kinds to use unused bits)

This issue is still present today.

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