linux-kernel - Build error kernel/cgroup/rstat.c on v6.7-1959-gaffc5af36bbb

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Message-ID: <f8ed4fe9-edcc-1cdf-65cc-7cc9d4f913a4@lio96.de>
Date: Wed, 10 Jan 2024 20:50:59 +0100 (CET)
From: Thomas Voegtle <tv@...96.de>
To: linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>
Subject: Build error kernel/cgroup/rstat.c on v6.7-1959-gaffc5af36bbb


Hello,

building v6.7-1959-gaffc5af36bbb I get this:

..
   CALL    scripts/checksyscalls.sh
   DESCEND objtool
   INSTALL libsubcmd_headers
   CC      kernel/cgroup/rstat.o
kernel/cgroup/rstat.c:218:22: error: no previous prototype for
‘bpf_rstat_flush’ [-Werror=missing-prototypes]
  __weak noinline void bpf_rstat_flush(struct cgroup *cgrp,
                       ^~~~~~~~~~~~~~~


git bisects points to:

commit 0fcb70851fbfea1776ae62f67c503fef8f0292b9 (refs/bisect/bad)
Author: Arnd Bergmann <arnd@...db.de>
Date:   Thu Nov 23 12:05:06 2023 +0100

     Makefile.extrawarn: turn on missing-prototypes globally


My config is attached.
openSUSE Leap 15.5 x86_64 with gcc 7.5.0


Is this already known?

    Thomas

View attachment "config" of type "text/plain" (121219 bytes)