From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pj1-x102d.google.com (mail-pj1-x102d.google.com [IPv6:2607:f8b0:4864:20::102d]) by sourceware.org (Postfix) with ESMTPS id CB3C5385841C for ; Wed, 1 Mar 2023 23:34:02 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org CB3C5385841C Authentication-Results: sourceware.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=google.com Received: by mail-pj1-x102d.google.com with SMTP id kb15so15074145pjb.1 for ; Wed, 01 Mar 2023 15:34:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; t=1677713642; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=HRnbOushIGayii8e9TGHD8AmU4agQakFfKEOxWBRoZo=; b=evRAyZPfhF8pt9QwB2EGm3mqEdexSnOnOxQ+hq9/DxelpWGEHqXeJgEIPPYdxc/yLw SsgzjdTlqhiVgjLFT5qREnUiTmgGg+FBSum/VxL2YXwXXYyQB9OXS3brQGT/EV7tJxS1 VQG1olQFAByH4KbC2bR5wyTc7Ho4UQmvOvcr10/pglzCGcDfsQay/zoE1Z8iWq1dcd2s YaOlNesN514nTspp28A4uUjpr0FJN+KZ9nwOL+RHwLVSNbuU0I/ZcWKUwG2uz67TxquO vtl0XuEr2Jzd/lwI+V/jSFYnacBIQa7JoTDFeQPZfcN0Mnci0F83fTmBVoZIZsMT3e3/ BTzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1677713642; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=HRnbOushIGayii8e9TGHD8AmU4agQakFfKEOxWBRoZo=; b=ZcrCII7zIqh2X48if3qTU4JwYSy4E2qUwzjbSJEnHKv7ibM0lj94QqIoayzPyq3LVL jyyavfb1fA0+T2VLEMMLVSvggoPuGedSNsdHGAiv7HbWFzpeUXUwvrlWc9NMRHdPXvnx KRQameYzGvZdYCVSFPJ8Rzb5R7MWREFNUGsvjJTntDM7Q9pHb0HEKhaTVJdnlSXGvc4L 9vLwOdiHkXz4ek9cKzz5asNRwDymAKnrXDWe1px/gpJKBI0U2Iz9QGLnGurYSIIob407 y9AASWS66tO/OZ31QayOXxebqhA6v/vb3eZdU57dc+tUwXPJMAM5/xka13c4dT62D2Ez GQEw== X-Gm-Message-State: AO0yUKXXPQAuOIdH2M+/MTkkurqSrLEVkXbGhcieM/HPxpF6IclOpuUt BXrhYwwfqKYACtU+bIsKG9BQKFr4Z5BigzfW26B5VA== X-Google-Smtp-Source: AK7set9vQaIGnJBnZuSGxWwvYgDfU1W97KSAF9pAQ7TcZ1kC9CiIP88cqyAB9y22n8IVJ6JkCmAvfbchZO2qI3QrgoE= X-Received: by 2002:a17:903:44e:b0:19a:87dd:9206 with SMTP id iw14-20020a170903044e00b0019a87dd9206mr2961850plb.0.1677713641493; Wed, 01 Mar 2023 15:34:01 -0800 (PST) MIME-Version: 1.0 References: <20230301075402.4578-1-quic_johmoo@quicinc.com> <41d287fa-3a0a-cac6-4595-ad47ef873d79@quicinc.com> <0c92e7b8-e415-8ad5-14e7-d94f18c3fa25@quicinc.com> In-Reply-To: From: Nick Desaulniers Date: Wed, 1 Mar 2023 15:33:50 -0800 Message-ID: Subject: Re: [PATCH v2 0/2] Validating UAPI backwards compatibility To: John Moon Cc: Masahiro Yamada , Nathan Chancellor , Nicolas Schier , linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Greg Kroah-Hartman , Randy Dunlap , Arnd Bergmann , Bjorn Andersson , Todd Kjos , Matthias Maennich , Giuliano Procida , kernel-team@android.com, libabigail@sourceware.org, Jordan Crouse , Trilok Soni , Satya Durga Srinivasu Prabhala , Elliot Berman Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Spam-Status: No, score=-16.8 required=5.0 tests=BAYES_00,DKIMWL_WL_MED,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,TXREP,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On Wed, Mar 1, 2023 at 2:33=E2=80=AFPM John Moon = 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? --=20 Thanks, ~Nick Desaulniers