linux-kernel - Re: [PATCH 5.15 000/846] 5.15.17-rc1 review

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Date:   Mon, 24 Jan 2022 21:36:39 +0100
From:   Holger Hoffstätte <holger@...lied-asynchrony.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, shuah@...nel.org, patches@...nelci.org,
        lkft-triage@...ts.linaro.org, pavel@...x.de, jonathanh@...dia.com,
        f.fainelli@...il.com, sudipm.mukherjee@...il.com,
        stable@...r.kernel.org, Andrii Nakryiko <andrii@...nel.org>,
        Alexei Starovoitov <ast@...nel.org>, Yonghong Song <yhs@...com>
Subject: Re: [PATCH 5.15 000/846] 5.15.17-rc1 review

On 2022-01-24 19:31, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 5.15.17 release.

Oh noes :(

   DESCEND bpf/resolve_btfids
   MKDIR     /tmp/linux-5.15.17/tools/bpf/resolve_btfids//libbpf
   GEN     /tmp/linux-5.15.17/tools/bpf/resolve_btfids/libbpf/bpf_helper_defs.h
   MKDIR   /tmp/linux-5.15.17/tools/bpf/resolve_btfids/libbpf/staticobjs/
   CC      /tmp/linux-5.15.17/tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o
libbpf.c: In function 'bpf_object__elf_collect':
libbpf.c:3038:31: error: invalid type argument of '->' (have 'GElf_Shdr' {aka 'Elf64_Shdr'})
  3038 |                         if (sh->sh_type != SHT_PROGBITS)
       |                               ^~
libbpf.c:3042:31: error: invalid type argument of '->' (have 'GElf_Shdr' {aka 'Elf64_Shdr'})
  3042 |                         if (sh->sh_type != SHT_PROGBITS)
       |                               ^~
make[4]: *** [/tmp/linux-5.15.17/tools/build/Makefile.build:97: /tmp/linux-5.15.17/tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o] Error 1
make[3]: *** [Makefile:158: /tmp/linux-5.15.17/tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2
make[2]: *** [Makefile:44: /tmp/linux-5.15.17/tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2
make[1]: *** [Makefile:72: bpf/resolve_btfids] Error 2
make: *** [Makefile:1371: tools/bpf/resolve_btfids] Error 2

Reverting "libbpf-validate-that-.btf-and-.btf.ext-sections-cont.patcht" aka
this one:

> Andrii Nakryiko <andrii@...nel.org>
>      libbpf: Validate that .BTF and .BTF.ext sections contain data

makes it build & run fine. I looked for followups but couldn't find anything that
stood out, maybe the BPF folks (cc'ed) know what's missing/wrong.

cheers
Holger