From: Daniel Borkmann <daniel@iogearbox.net>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Song Liu <songliubraving@fb.com>,
Andrii Nakryiko <andriin@fb.com>,
Alexei Starovoitov <ast@kernel.org>,
linux-kernel@vger.kernel.org,
"open list:BPF \(Safe dynamic programs and tools\)"
<netdev@vger.kernel.org>, Yonghong Song <yhs@fb.com>,
"open list:BPF \(Safe dynamic programs and tools\)"
<bpf@vger.kernel.org>,
linuxppc-dev@lists.ozlabs.org, Martin KaFai Lau <kafai@fb.com>,
Aurelien Jarno <aurelien@aurel32.net>,
debian-kernel@lists.debian.org
Subject: Re: [PATCH] libbpf: fix readelf output parsing on powerpc with recent binutils
Date: Mon, 2 Dec 2019 10:37:52 +0100 [thread overview]
Message-ID: <20191202093752.GA1535@localhost.localdomain> (raw)
In-Reply-To: <87zhgbe0ix.fsf@mpe.ellerman.id.au>
On Mon, Dec 02, 2019 at 04:53:26PM +1100, Michael Ellerman wrote:
> Aurelien Jarno <aurelien@aurel32.net> writes:
> > On powerpc with recent versions of binutils, readelf outputs an extra
> > field when dumping the symbols of an object file. For example:
> >
> > 35: 0000000000000838 96 FUNC LOCAL DEFAULT [<localentry>: 8] 1 btf_is_struct
> >
> > The extra "[<localentry>: 8]" prevents the GLOBAL_SYM_COUNT variable to
> > be computed correctly and causes the checkabi target to fail.
> >
> > Fix that by looking for the symbol name in the last field instead of the
> > 8th one. This way it should also cope with future extra fields.
> >
> > Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
> > ---
> > tools/lib/bpf/Makefile | 4 ++--
> > 1 file changed, 2 insertions(+), 2 deletions(-)
>
> Thanks for fixing that, it's been on my very long list of test failures
> for a while.
>
> Tested-by: Michael Ellerman <mpe@ellerman.id.au>
Looks good & also continues to work on x86. Applied, thanks!
next prev parent reply other threads:[~2019-12-02 9:55 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-01 19:57 [PATCH] libbpf: fix readelf output parsing on powerpc with recent binutils Aurelien Jarno
2019-12-02 5:53 ` Michael Ellerman
2019-12-02 9:37 ` Daniel Borkmann [this message]
2019-12-10 18:58 ` Justin Forbes
2019-12-10 22:25 ` Thadeu Lima de Souza Cascardo
2019-12-11 15:33 ` Justin Forbes
2019-12-11 16:00 ` Aurelien Jarno
2019-12-11 16:01 ` Thadeu Lima de Souza Cascardo
2019-12-11 16:52 ` Justin Forbes
2019-12-13 10:11 ` [PATCH] libbpf: Fix readelf output parsing for Fedora Thadeu Lima de Souza Cascardo
2019-12-13 17:02 ` Andrii Nakryiko
2019-12-15 17:42 ` Alexei Starovoitov
2019-12-12 0:53 ` [PATCH] libbpf: fix readelf output parsing on powerpc with recent binutils Michael Ellerman
2019-12-13 15:39 ` Ben Hutchings
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