netdev - Re: [PATCH bpf-next v2 0/3] libbpf: use func name when pinning programs with LIBBPF_STRICT_SEC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAEf4BzZ0-BeNmd9AuyLF1QZvmH4xNjAXPC2TsUN++D2WkuN5UQ@mail.gmail.com>
Date:   Wed, 20 Oct 2021 11:14:13 -0700
From:   Andrii Nakryiko <andrii.nakryiko@...il.com>
To:     Stanislav Fomichev <sdf@...gle.com>
Cc:     Networking <netdev@...r.kernel.org>, bpf <bpf@...r.kernel.org>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andrii@...nel.org>
Subject: Re: [PATCH bpf-next v2 0/3] libbpf: use func name when pinning
 programs with LIBBPF_STRICT_SEC_NAME

On Tue, Oct 12, 2021 at 9:15 AM Stanislav Fomichev <sdf@...gle.com> wrote:
>
> Commit 15669e1dcd75 ("selftests/bpf: Normalize all the rest SEC() uses")
> broke flow dissector tests. With the strict section names, bpftool isn't
> able to pin all programs of the objects (all section names are the
> same now). To bring it back to life let's do the following:
>
> - teach libbpf to pin by func name with LIBBPF_STRICT_SEC_NAME
> - enable strict mode in bpftool (breaking cli change)
> - fix custom flow_dissector loader to use strict mode
> - fix flow_dissector tests to use new pin names (func vs sec)
>
> v2:
> - add github issue (Andrii Nakryiko)
> - remove sec_name from bpf_program.pin_name comment (Andrii Nakryiko)
> - clarify program pinning in LIBBPF_STRICT_SEC_NAME (Andrii Nakryiko)

I could not find this, can you please point me to where this is
clarified/explained in your patches?

> - add cover letter (Andrii Nakryiko)
>
> Stanislav Fomichev (3):
>   libbpf: use func name when pinning programs with
>     LIBBPF_STRICT_SEC_NAME
>   bpftool: don't append / to the progtype
>   selftests/bpf: fix flow dissector tests
>
>  tools/bpf/bpftool/main.c                       |  4 ++++
>  tools/bpf/bpftool/prog.c                       | 15 +--------------
>  tools/lib/bpf/libbpf.c                         | 10 ++++++++--
>  .../selftests/bpf/flow_dissector_load.c        | 18 +++++++++++-------
>  .../selftests/bpf/flow_dissector_load.h        | 10 ++--------
>  .../selftests/bpf/test_flow_dissector.sh       | 10 +++++-----
>  6 files changed, 31 insertions(+), 36 deletions(-)
>
> --
> 2.33.0.882.g93a45727a2-goog
>