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

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Message-ID: <CAKwvOdmUm8oEiiYt64oe0MY+H3U0TxpzVhWbhfvptTDkKHUFcA@mail.gmail.com>
Date:   Wed, 1 Mar 2023 15:33:50 -0800
From:   Nick Desaulniers <ndesaulniers@...gle.com>
To:     John Moon <quic_johmoo@...cinc.com>
Cc:     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 Wed, Mar 1, 2023 at 2:33 PM John Moon <quic_johmoo@...cinc.com> 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.
>
> 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.

Good job John; mind sending a v3 with that addition, and the commit
message updated?
-- 
Thanks,
~Nick Desaulniers