linux-kernel - Re: [PATCH v2 0/2] Validating UAPI backwards compatibility

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]

Date:   Wed, 1 Mar 2023 15:59:11 -0800
From:   John Moon <quic_johmoo@...cinc.com>
To:     Mark Wielaard <mark@...mp.org>
CC:     Nick Desaulniers <ndesaulniers@...gle.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nicolas Schier <nicolas@...sle.eu>,
        <linux-kbuild@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-arm-msm@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Randy Dunlap <rdunlap@...radead.org>,
        "Arnd Bergmann" <arnd@...db.de>,
        Bjorn Andersson <andersson@...nel.org>,
        Todd Kjos <tkjos@...gle.com>,
        Matthias Maennich <maennich@...gle.com>,
        Giuliano Procida <gprocida@...gle.com>,
        <kernel-team@...roid.com>, <libabigail@...rceware.org>,
        Jordan Crouse <jorcrous@...zon.com>,
        Trilok Soni <quic_tsoni@...cinc.com>,
        Satya Durga Srinivasu Prabhala <quic_satyap@...cinc.com>,
        Elliot Berman <quic_eberman@...cinc.com>
Subject: Re: [PATCH v2 0/2] Validating UAPI backwards compatibility

On 3/1/2023 3:52 PM, Mark Wielaard wrote:
> Hi John,
> 
> On Wed, Mar 01, 2023 at 02:33:00PM -0800, John Moon via Libabigail wrote:
>> With some additional help from Nick offline, we determined that the
>> issue isn't with clang, but with libdw (from elfutils). You need at
>> least libdw version 0.171 for the abidiff tool to work correctly
>> with clang (in this particular case). Ubuntu 18.04 ships with
>> version 0.170.
> 
> I don't remember any specific fixes for clang in libdw for elfutils
> 0.171. But elfutils 0.171 was the first release that supported most of
> DWARF5 (including GNU DebugFission and split dwarf).
> 
>> If there's any interest, it'd be fairly easy to add a check for this
>> condition under the check_deps() function in the script.
> 
> Please do add this check. elfutils 0.170 is almost 6 years old now,
> there have been many, many bug fixes since then (current release is
> 0.188 from Nov 2022).
> 
> Thanks,
> 
> Mark

Okay, I'll add the check in v3 after giving a chance for some other 
reviews. Thanks!