All the mail mirrored from lore.kernel.org
 help / color / mirror / Atom feed

From: Qais Yousef <qais.yousef@arm.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	Andrii Nakryiko <andrii@kernel.org>, Jiri Olsa <jolsa@kernel.org>,
	netdev@vger.kernel.org, bpf@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: BTFIDS: FAILED unresolved symbol udp6_sock
Date: Tue, 29 Dec 2020 23:28:35 +0000	[thread overview]
Message-ID: <20201229232835.cbyfmja3bu3lx7we@e107158-lin> (raw)
In-Reply-To: <20201229173401.GH450923@krava>

Hi Jiri

On 12/29/20 18:34, Jiri Olsa wrote:
> On Tue, Dec 29, 2020 at 03:13:52PM +0000, Qais Yousef wrote:
> > Hi
> > 
> > When I enable CONFIG_DEBUG_INFO_BTF I get the following error in the BTFIDS
> > stage
> > 
> > 	FAILED unresolved symbol udp6_sock
> > 
> > I cross compile for arm64. My .config is attached.
> > 
> > I managed to reproduce the problem on v5.9 and v5.10. Plus 5.11-rc1.
> > 
> > Have you seen this before? I couldn't find a specific report about this
> > problem.
> > 
> > Let me know if you need more info.
> 
> hi,
> this looks like symptom of the gcc DWARF bug we were
> dealing with recently:
> 
>   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97060
>   https://lore.kernel.org/lkml/CAE1WUT75gu9G62Q9uAALGN6vLX=o7vZ9uhqtVWnbUV81DgmFPw@mail.gmail.com/#r
> 
> what pahole/gcc version are you using?

I'm on gcc 9.3.0

	aarch64-linux-gnu-gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0

I was on pahole v1.17. I moved to v1.19 but I still see the same problem.

Thanks

--
Qais Yousef

> 
> we fixed pahole (v1.19) to workaround the issue and AFAIK
> there's already gcc fix as well

next prev parent reply	other threads:[~2020-12-29 23:29 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-29 15:13 BTFIDS: FAILED unresolved symbol udp6_sock Qais Yousef
2020-12-29 17:34 ` Jiri Olsa
2020-12-29 23:28   ` Qais Yousef [this message]
2020-12-30  9:03     ` Jiri Olsa
2020-12-30 13:27       ` Jiri Olsa
2020-12-30 13:28         ` Jiri Olsa
2020-12-30 14:19           ` Arnaldo Carvalho de Melo
2020-12-30 15:04             ` Jiri Olsa
2020-12-30 15:29           ` Qais Yousef
2021-01-02 22:25         ` Andrii Nakryiko
2021-01-02 23:06           ` Jiri Olsa
2021-01-04 20:54             ` Andrii Nakryiko

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201229232835.cbyfmja3bu3lx7we@e107158-lin \
    --to=qais.yousef@arm.com \
    --cc=andrii@kernel.org \
    --cc=ast@kernel.org \
    --cc=bpf@vger.kernel.org \
    --cc=daniel@iogearbox.net \
    --cc=jolsa@kernel.org \
    --cc=jolsa@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.