From: Alexei Starovoitov <alexei.starovoitov@gmail.com>
To: Eelco Chaudron <echaudro@redhat.com>
Cc: Xdp <xdp-newbies@vger.kernel.org>, bpf <bpf@vger.kernel.org>
Subject: Re: Trying the bpf trace a bpf xdp program
Date: Thu, 28 Nov 2019 11:47:13 -0800 [thread overview]
Message-ID: <CAADnVQJKSnoMVpQ3F86zBhFyo8WQ0vi65Z4QDtopLRrpK4yB8Q@mail.gmail.com> (raw)
In-Reply-To: <3AC9D2B7-9D2F-4286-80A2-1721B51B62CF@redhat.com>
On Thu, Nov 28, 2019 at 11:16 AM Eelco Chaudron <echaudro@redhat.com> wrote:
>
>
>
> On 28 Nov 2019, at 19:18, Alexei Starovoitov wrote:
>
> > On Thu, Nov 28, 2019 at 9:20 AM Eelco Chaudron <echaudro@redhat.com>
> > wrote:
> >>
> >> Trying out the BPF trace to trace a BPF program, but I’m already
> >> getting stuck loading the object with the fexit :(
> >
> > I can take a look after holidays.
>
> Enjoy the Holidays!! I figured out my auto kernel install script failed
> whiteout me noticing, and I was running an old kernel :(
>
> I will try tomorrow with the correct kernel…
Please also check that you have the latest llvm and pahole.
pahole version should be >= 1.13.
clang ideally from master.
If all that is working then downgrade one by one and bisect whether the bug is.
>
> >> libbpf: load bpf program failed: Argument list too long
> >> libbpf: failed to load program 'fexit/xdp_prog_simple'
> >> libbpf: failed to load object './xdp_sample_fentry_fexit_kern.o'
> >> ERROR: Failed to load object file: Operation not permitted
> >
> > please add -vvv and share full output.
>
next prev parent reply other threads:[~2019-11-28 19:47 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E53E0693-1C3A-4B47-B205-DC8E5DAF3619@redhat.com>
2019-11-28 18:18 ` Trying the bpf trace a bpf xdp program Alexei Starovoitov
2019-11-28 19:16 ` Eelco Chaudron
2019-11-28 19:47 ` Alexei Starovoitov [this message]
2019-11-29 16:30 ` Eelco Chaudron
2019-11-29 16:52 ` Yonghong Song
2019-12-02 16:34 ` Eelco Chaudron
2019-12-02 16:48 ` Yonghong Song
2019-12-04 13:19 ` Eelco Chaudron
2019-12-04 14:58 ` Yonghong Song
2019-12-04 18:01 ` Yonghong Song
2019-12-04 18:52 ` Eelco Chaudron
2019-12-05 12:40 ` Eelco Chaudron
2019-12-05 17:35 ` Y Song
2019-12-06 13:04 ` Eelco Chaudron
2019-12-07 16:51 ` Alexei Starovoitov
2019-12-19 11:06 ` Eelco Chaudron
2019-12-04 16:31 ` Andrii Nakryiko
2019-12-04 18:03 ` John Fastabend
2019-12-04 21:19 ` Andrii Nakryiko
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