On 6/27/25 09:47, Stephen Rothwell wrote:

Hi all,

After merging the bpf-next tree, today's linux-next build (htmldocs)
produced this warning:

kernel/bpf/helpers.c:3465: warning: expecting prototype for bpf_strlen(). Prototype was for bpf_strnlen() instead
kernel/bpf/helpers.c:3557: warning: expecting prototype for strcspn(). Prototype was for bpf_strcspn() instead

Introduced by commit

  e91370550f1f ("bpf: Add kfuncs for read-only string operations")

Oh, good catch, thanks for the report.

Just sent a fix to bpf-next [1].

Viktor

[1]
https://lore.kernel.org/bpf/20250627082001.237606-1-vmalik@redhat.com/T/#u (local)