From: Cong Wang <xiyou.wangcong@gmail.com>
To: Alexei Starovoitov <alexei.starovoitov@gmail.com>
Cc: Martin KaFai Lau <kafai@fb.com>, bpf <bpf@vger.kernel.org>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
kernel-team <kernel-team@fb.com>,
Linux Kernel Network Developers <netdev@vger.kernel.org>
Subject: Re: [PATCH v2 bpf-next 00/14] bpf: Support calling kernel function
Date: Sun, 28 Mar 2021 13:13:35 -0700 [thread overview]
Message-ID: <CAM_iQpUTFs_60vkS6LTRr5VBt8yTHiSgaHoKrtt4GGDe4tCcew@mail.gmail.com> (raw)
In-Reply-To: <CAADnVQJoeEqZK8eWfCi-BkHY4rSzaPuXYVEFvR75Ecdbt+oGgA@mail.gmail.com>
On Sat, Mar 27, 2021 at 3:54 PM Alexei Starovoitov
<alexei.starovoitov@gmail.com> wrote:
>
> On Sat, Mar 27, 2021 at 3:08 PM Cong Wang <xiyou.wangcong@gmail.com> wrote:
> > BTFIDS vmlinux
> > FAILED unresolved symbol cubictcp_state
> > make: *** [Makefile:1199: vmlinux] Error 255
> >
> > I suspect it is related to the kernel config or linker version.
> >
> > # grep TCP_CONG .config
> > CONFIG_TCP_CONG_ADVANCED=y
> > CONFIG_TCP_CONG_BIC=m
> > CONFIG_TCP_CONG_CUBIC=y
> ..
> >
> > # pahole --version
> > v1.17
>
> That is the most likely reason.
> In lib/Kconfig.debug
> we have pahole >= 1.19 requirement for BTF in modules.
> Though your config has CUBIC=y I suspect something odd goes on.
> Could you please try the latest pahole 1.20 ?
Sure, I will give it a try tomorrow, I am not in control of the CI I ran.
Thanks.
next prev parent reply other threads:[~2021-03-28 20:14 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-25 1:51 [PATCH v2 bpf-next 00/14] bpf: Support calling kernel function Martin KaFai Lau
2021-03-25 1:51 ` [PATCH v2 bpf-next 01/14] bpf: Simplify freeing logic in linfo and jited_linfo Martin KaFai Lau
2021-03-25 1:51 ` [PATCH v2 bpf-next 02/14] bpf: Refactor btf_check_func_arg_match Martin KaFai Lau
2021-03-25 1:51 ` [PATCH v2 bpf-next 03/14] bpf: Support bpf program calling kernel function Martin KaFai Lau
2021-03-25 22:02 ` Toke Høiland-Jørgensen
2021-03-25 23:09 ` Martin KaFai Lau
2021-03-26 10:11 ` Toke Høiland-Jørgensen
2021-03-26 14:20 ` Alexei Starovoitov
2021-03-26 15:14 ` Toke Høiland-Jørgensen
2021-03-27 3:59 ` Alexei Starovoitov
2021-03-25 1:51 ` [PATCH v2 bpf-next 04/14] bpf: Support kernel function call in x86-32 Martin KaFai Lau
2021-03-25 1:51 ` [PATCH v2 bpf-next 05/14] tcp: Rename bictcp function prefix to cubictcp Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 06/14] bpf: tcp: Put some tcp cong functions in allowlist for bpf-tcp-cc Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 07/14] libbpf: Refactor bpf_object__resolve_ksyms_btf_id Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 08/14] libbpf: Refactor codes for finding btf id of a kernel symbol Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 09/14] libbpf: Rename RELO_EXTERN to RELO_EXTERN_VAR Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 10/14] libbpf: Record extern sym relocation first Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 11/14] libbpf: Support extern kernel function Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 12/14] bpf: selftests: Rename bictcp to bpf_cubic Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 13/14] bpf: selftests: bpf_cubic and bpf_dctcp calling kernel functions Martin KaFai Lau
2021-03-25 1:52 ` [PATCH v2 bpf-next 14/14] bpf: selftests: Add kfunc_call test Martin KaFai Lau
2021-03-27 3:50 ` [PATCH v2 bpf-next 00/14] bpf: Support calling kernel function patchwork-bot+netdevbpf
2021-03-27 21:25 ` Cong Wang
2021-03-27 21:28 ` Alexei Starovoitov
2021-03-27 22:07 ` Cong Wang
2021-03-27 22:53 ` Alexei Starovoitov
2021-03-28 20:13 ` Cong Wang [this message]
2021-03-29 1:24 ` Martin KaFai Lau
2021-03-29 16:06 ` Lorenz Bauer
2021-03-29 19:08 ` Martin KaFai Lau
2021-03-31 6:44 ` Andrii Nakryiko
2021-04-01 19:51 ` Martin KaFai Lau
2021-04-01 19:52 ` Andrii Nakryiko
2021-03-29 20:18 ` Cong Wang
2021-03-30 9:43 ` Lorenz Bauer
2021-03-30 14:35 ` Alexei Starovoitov
2021-03-30 19:58 ` Cong Wang
2021-03-30 21:43 ` Martin KaFai Lau
2021-03-31 3:28 ` [External] " Jiang Wang .
2021-03-31 4:55 ` Martin KaFai Lau
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