From: Tom Stellard <tstellar@redhat.com>
To: Andrii Nakryiko <andrii.nakryiko@gmail.com>
Cc: Andrii Nakryiko <andrii@kernel.org>,
Alexei Starovoitov <ast@fb.com>, bpf <bpf@vger.kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Kernel Team <kernel-team@fb.com>,
Networking <netdev@vger.kernel.org>
Subject: Re: [PATCH v2 bpf-next 06/11] libbpf: add BPF static linker APIs
Date: Mon, 7 Jun 2021 19:41:52 -0700 [thread overview]
Message-ID: <84b3cb2c-2dff-4cd8-724c-a1b56316816b@redhat.com> (raw)
In-Reply-To: <b1bdf1df-e3a8-1ce8-fc33-4ab40b39fb06@redhat.com>
On 6/7/21 5:25 PM, Andrii Nakryiko wrote:
> On Mon, Jun 7, 2021 at 4:12 PM Tom Stellard <tstellar@redhat.com> wrote:
>>
>>
>> Hi,
>>
>>> + } else {
>>> + pr_warn("relocation against STT_SECTION in non-exec section is not supported!\n");
>>> + return -EINVAL;
>>> + }
>>
>> Kernel build of commit 324c92e5e0ee are failing for me with this error
>> message:
>>
>> /builddir/build/BUILD/kernel-5.13-rc4-61-g324c92e5e0ee/linux-5.13.0-0.rc4.20210603git324c92e5e0ee.35.fc35.x86_64/tools/bpf/bpftool/bpftool gen object /builddir/build/BUILD/kernel-5.13-rc4-61-g324c92e5e0ee/linux-5.13.0-0.rc4.20210603git324c92e5e0ee.35.fc35.x86_64/tools/testing/selftests/bpf/bind_perm.linked1.o /builddir/build/BUILD/kernel-5.13-rc4-61-g324c92e5e0ee/linux-5.13.0-0.rc4.20210603git324c92e5e0ee.35.fc35.x86_64/tools/testing/selftests/bpf/bind_perm.o
>> libbpf: relocation against STT_SECTION in non-exec section is not supported!
>>
>> What information can I provide to help debug this failure?
>
> Can you please send that bind_perm.o file? Also what's your `clang
> --version` output?
>
clang version 12.0.0 (Fedora 12.0.0-2.fc35)
>> I suspect this might be due to Clang commit 6a2ea84600ba ("BPF: Add
>> more relocation kinds"), but I get a different error on 324c92e5e0ee.
>> So meanwhile you might try applying 9f0c317f6aa1 ("libbpf: Add support
>> for new llvm bpf relocations") from bpf-next/master and check if that
>> helps. But please do share bind_perm.o, just to double-check what's
>> going on.
>>
Here is bind_perm.o: https://fedorapeople.org/~tstellar/bind_perm.o
Thanks,
Tom
>>
>>>
>>> Thanks,
>>> Tom
>>>
>>
>
next prev parent reply other threads:[~2021-06-08 2:41 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-13 19:35 [PATCH v2 bpf-next 00/11] BPF static linking Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 01/11] libbpf: expose btf_type_by_id() internally Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 02/11] libbpf: generalize BTF and BTF.ext type ID and strings iteration Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 03/11] libbpf: rename internal memory-management helpers Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 04/11] libbpf: extract internal set-of-strings datastructure APIs Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 05/11] libbpf: add generic BTF type shallow copy API Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 06/11] libbpf: add BPF static linker APIs Andrii Nakryiko
2021-06-07 23:11 ` Tom Stellard
2021-06-08 0:25 ` Andrii Nakryiko
[not found] ` <b1bdf1df-e3a8-1ce8-fc33-4ab40b39fb06@redhat.com>
2021-06-08 2:41 ` Tom Stellard [this message]
2021-06-08 4:08 ` Andrii Nakryiko
2021-06-08 6:47 ` Yonghong Song
2021-06-09 3:44 ` Tom Stellard
2021-06-09 4:41 ` Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 07/11] libbpf: add BPF static linker BTF and BTF.ext support Andrii Nakryiko
2021-03-17 5:25 ` Alexei Starovoitov
2021-03-17 22:10 ` Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 08/11] bpftool: add `gen object` command to perform BPF static linking Andrii Nakryiko
2021-03-15 9:24 ` Quentin Monnet
2021-03-16 5:16 ` Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 09/11] selftests/bpf: re-generate vmlinux.h and BPF skeletons if bpftool changed Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 10/11] selftests/bpf: pass all BPF .o's through BPF static linker Andrii Nakryiko
2021-03-17 5:34 ` Alexei Starovoitov
2021-03-17 20:47 ` Andrii Nakryiko
2021-03-17 21:00 ` Alexei Starovoitov
2021-03-17 21:22 ` Andrii Nakryiko
2021-03-13 19:35 ` [PATCH v2 bpf-next 11/11] selftests/bpf: add multi-file statically linked BPF object file test Andrii Nakryiko
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