netdev - Re: [PATCHv2 iproute2-next 0/5] iproute2: add libbpf support

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-ID: <20201029020637.GM2408@dhcp-12-153.nay.redhat.com>
Date:   Thu, 29 Oct 2020 10:06:37 +0800
From:   Hangbin Liu <haliu@...hat.com>
To:     David Ahern <dsahern@...il.com>
Cc:     Stephen Hemminger <stephen@...workplumber.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Martin KaFai Lau <kafai@...com>,
        Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
        David Miller <davem@...emloft.net>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        Jiri Benc <jbenc@...hat.com>,
        Andrii Nakryiko <andrii@...nel.org>,
        Toke Høiland-Jørgensen <toke@...hat.com>
Subject: Re: [PATCHv2 iproute2-next 0/5] iproute2: add libbpf support

On Wed, Oct 28, 2020 at 05:02:34PM -0600, David Ahern wrote:
> fails to compile on Ubuntu 20.10:
> 
> root@...10-sfo3:~/iproute2.git# ./configure
> TC schedulers
>  ATM	yes
>  IPT	using xtables
>  IPSET  yes
> 
> iptables modules directory: /usr/lib/x86_64-linux-gnu/xtables
> libc has setns: yes
> SELinux support: yes
> libbpf support: yes
> ELF support: yes
> libmnl support: yes
> Berkeley DB: no
> need for strlcpy: yes
> libcap support: yes
> 
> root@...10-sfo3:~/iproute2.git# make clean
> 
> root@...10-sfo3:~/iproute2.git# make -j 4
> ...
> /usr/bin/ld: ../lib/libutil.a(bpf_libbpf.o): in function `load_bpf_object':
> bpf_libbpf.c:(.text+0x3cb): undefined reference to
> `bpf_program__section_name'
> /usr/bin/ld: bpf_libbpf.c:(.text+0x438): undefined reference to
> `bpf_program__section_name'
> /usr/bin/ld: bpf_libbpf.c:(.text+0x716): undefined reference to
> `bpf_program__section_name'
> collect2: error: ld returned 1 exit status
> make[1]: *** [Makefile:27: ip] Error 1
> make[1]: *** Waiting for unfinished jobs....
> make: *** [Makefile:64: all] Error 2

You need to update libbpf to latest version.

But this also remind me that I need to add bpf_program__section_name() to
configure checking. I will see if I missed other functions' checking.

Thanks
Hangbin