netdev - Re: [PATCH 1/2] bpf: Fix build for disabled CONFIG_DEBUG_INFO

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAADnVQ+w_93sZuk-gRbFWYCL9_ocPxD1OmhcCcX3mZ4qD7kayw@mail.gmail.com>
Date:   Tue, 14 Jul 2020 10:26:57 -0700
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Jiri Olsa <jolsa@...nel.org>
Cc:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH 1/2] bpf: Fix build for disabled CONFIG_DEBUG_INFO_BTF option

On Tue, Jul 14, 2020 at 3:25 AM Jiri Olsa <jolsa@...nel.org> wrote:
>
> Stephen reported following linker warnings on powerpc build:
>
>   ld: warning: orphan section `.BTF_ids' from `kernel/trace/bpf_trace.o' being placed in section `.BTF_ids'
>   ld: warning: orphan section `.BTF_ids' from `kernel/bpf/btf.o' being placed in section `.BTF_ids'
>   ld: warning: orphan section `.BTF_ids' from `kernel/bpf/stackmap.o' being placed in section `.BTF_ids'
>   ld: warning: orphan section `.BTF_ids' from `net/core/filter.o' being placed in section `.BTF_ids'
>   ld: warning: orphan section `.BTF_ids' from `kernel/trace/bpf_trace.o' being placed in section `.BTF_ids'
>
> It's because we generated .BTF_ids section even when
> CONFIG_DEBUG_INFO_BTF is not enabled. Fixing this by
> generating empty btf_id arrays for this case.
>
> Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
> Tested-by: Geert Uytterhoeven <geert+renesas@...der.be>
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>

Applied both to bpf-next. Thanks for the quick fix.