From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4CD0BC433E1 for ; Mon, 20 Jul 2020 20:41:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C56B22BEF for ; Mon, 20 Jul 2020 20:41:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="HgwjzrmA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726567AbgGTUlz (ORCPT ); Mon, 20 Jul 2020 16:41:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57340 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726046AbgGTUlz (ORCPT ); Mon, 20 Jul 2020 16:41:55 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 709E0C061794 for ; Mon, 20 Jul 2020 13:41:55 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id k71so465823pje.0 for ; Mon, 20 Jul 2020 13:41:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=wbGgRncSj6HHhJYW2c/QEhsKIi1BLv9QdKZvSMHudu0=; b=HgwjzrmA+mOwwU5EJh3eQMkYHWXGkinUFNfVbWiML7a8B69pPZGaNtLVIZLQQo+9WM ZFmahe0/5uxjEWxTr0A3qd8/su07tD9nRjBug4u2MZORO18oAcyhqXfLgIul3NiK+HB7 8tVvxR3mhimFYoPNzQrFU1Ssg3lGEnqCRLSI3Z+/Gw0ds3uONDPQ2PbdeH6wVLtCPgFd qOp1qiGpEMbsICYH86Tko4x6IAb5QJTqkbZVkxuqzBy+Z5eZ+pFn1LOUO0KPqsRSEMKn Ss71dDEWrwe6b6biZo/H1dXOljiFm4PnO175Zi6Af9LIs/cHjdZTksPD3lNw7jtjTtso ra0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=wbGgRncSj6HHhJYW2c/QEhsKIi1BLv9QdKZvSMHudu0=; b=ia6OLZI6UAppIcS4F1Ui6qdElWoGk1fWcz4beUvpE9epsY9k39eKchCMM212xfjn46 GsFUnYXcdk/Eo5DsOVQDv00R45XCc97G1NmwZpJZ7Pllcar5BQiYz6o3DIDQMUrd7Ygf Bg4STnhj6570waZv30t0g2PaOAz1gkxYV6Jk5e/pLv+YiRhwtoOJ8qBs09zKBh5I141j DN/MJnBtYnpDEkEUt+O4z3Mj6pOqEkTLtDMnSYkSRnNbB7wtb5MsbYJd0l7uBtzQdIZI QupJ9sMblp8vnGvguXSQeDScpeP40dknwlOU/Gigac5HEM66dDX8wfBQd3W9pjUrDpHH XvmA== X-Gm-Message-State: AOAM532HY4aJPQfmQD2+osfsisBW2l/MYKZ8HtZKAZ8y8+qeqNkwV3DU 3S23RstyidTnj8HjqdRb91Y= X-Google-Smtp-Source: ABdhPJyELo2RwNCaSN5m8WxH30lOK1FPcTKFveTzTgPil+nzzBMQqoGNiMguZ5OhaGFaQvMqgAJSaw== X-Received: by 2002:a17:90a:987:: with SMTP id 7mr1084469pjo.186.1595277714977; Mon, 20 Jul 2020 13:41:54 -0700 (PDT) Received: from ast-mbp.dhcp.thefacebook.com ([2620:10d:c090:400::5:e3b]) by smtp.gmail.com with ESMTPSA id u188sm18074945pfu.26.2020.07.20.13.41.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Jul 2020 13:41:54 -0700 (PDT) Date: Mon, 20 Jul 2020 13:41:52 -0700 From: Alexei Starovoitov To: Christoph Hellwig Cc: Shuah Khan , Alexei Starovoitov , Daniel Borkmann , bpf@vger.kernel.org Subject: Re: BPF selftests build failures Message-ID: <20200720204152.w7h3zmwtbjsuwgie@ast-mbp.dhcp.thefacebook.com> References: <20200720080943.GA12596@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200720080943.GA12596@lst.de> Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Mon, Jul 20, 2020 at 10:09:43AM +0200, Christoph Hellwig wrote: > Hi BPF and selftest maintainers. I get a very strange failure > when trying to build the bpf selftests on current net-next master: > > hch@brick:~/work/linux/tools/testing/selftests/bpf$ make > GEN vmlinux.h > Error: failed to load BTF from /home/hch/work/linux/vmlinux: No such file or directory That's bpftool complaining that BTF is not present in vmlinux. You need CONFIG_DEBUG_INFO_BTF=y and pahole >= v1.16 You also need llvm 10 to build bpf progs.