linux-kernel - Re: ANNOUNCE: pahole v1.23 (BTF tags and alignment inference)

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: <ns8n733-3sr-q954-q77-rp7s3o30r999@vanv.qr>
Date:   Sun, 12 Dec 2021 11:03:52 +0100 (CET)
From:   Jan Engelhardt <jengelh@...i.de>
To:     Yonghong Song <yhs@...com>
cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        dwarves@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        bpf@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>,
        Domenico Andreoli <domenico.andreoli@...ux.com>,
        Matthias Schwarzott <zzam@...too.org>,
        Douglas RAILLARD <douglas.raillard@....com>,
        Ilya Leoshkevich <iii@...ux.ibm.com>,
        Matteo Croce <mcroce@...rosoft.com>
Subject: Re: ANNOUNCE: pahole v1.23 (BTF tags and alignment inference)


On Thursday 2021-12-09 23:09, Yonghong Song wrote:
>> 
>> Just bumping this line
>> 
>>                  pkg_check_modules(LIBBPF REQUIRED libbpf>=0.4.0)
>> 
>> to the right version would absolutely be sufficient for us. Of course, that
>> requires that the libbpf project itself at least manages to make tags
>> regularly.
>
> Change above version 0.4.0 to 0.6.0 should work as libbpf 0.6.0 contains
> all the changes related to BTF_KIND_{TYPE,DECL}_TAGs.

Oh well, it does not. /usr/include/bpf/btf.h makes use of
BTF_KIND_{TYPE,DECL}_TAGs, but if /usr/include/linux/btf.h does not
have it (yet), compilation of libbpf-using components fails left and
right unfortunately despite libbpf itself succeeding in compilation.