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

From: Stanislav Fomichev <[email-masked]>
Date: Tue, 19 Jul 2022 20:44:16 -0700

On Tue, Jul 19, 2022 at 8:42 PM Alexei Starovoitov
<[email-masked]> wrote:
>
> On Tue, Jul 19, 2022 at 7:00 PM Stephen Rothwell <[email-masked]> wrote:
> >
> > Hi all,
> >
> > After merging the bpf-next tree, today's linux-next build (powerpc
> > ppc64_defconfig) failed like this:
> >
> > ld: warning: discarding dynamic section .glink
> > ld: warning: discarding dynamic section .plt
> > ld: linkage table error against `bpf_trampoline_unlink_cgroup_shim'
> > ld: stubs don't match calculated size
> > ld: can not build stubs: bad value
> > ld: kernel/bpf/cgroup.o: in function `.bpf_cgroup_link_release.part.0':
> > cgroup.c:(.text+0x2fc4): undefined reference to `.bpf_trampoline_unlink_cgroup_shim'
> > ld: kernel/bpf/cgroup.o: in function `.cgroup_bpf_release':
> > cgroup.c:(.text+0x33b0): undefined reference to `.bpf_trampoline_unlink_cgroup_shim'
> > ld: cgroup.c:(.text+0x33c0): undefined reference to `.bpf_trampoline_unlink_cgroup_shim'
> >
> > Caused by commit
> >
> >   3908fcddc65d ("bpf: fix lsm_cgroup build errors on esoteric configs")
> >
> > I have reverted that commit for today.
>
> Argh.
>
> Stan,
>
> please take a look.

Sorry about that, I forgot to update the ifdef guards in the header
:-( Will send a fix shortly..