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=-2.7 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, URIBL_BLOCKED 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 4109EC433C1 for ; Tue, 30 Mar 2021 14:36:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16CC9619CA for ; Tue, 30 Mar 2021 14:36:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232082AbhC3Ofc (ORCPT ); Tue, 30 Mar 2021 10:35:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46672 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231998AbhC3OfN (ORCPT ); Tue, 30 Mar 2021 10:35:13 -0400 Received: from mail-lj1-x22d.google.com (mail-lj1-x22d.google.com [IPv6:2a00:1450:4864:20::22d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B3BFC061574; Tue, 30 Mar 2021 07:35:13 -0700 (PDT) Received: by mail-lj1-x22d.google.com with SMTP id f26so20128494ljp.8; Tue, 30 Mar 2021 07:35:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=EFhs2tIDZibWzrJh59IOvN0bJfFhpwIvqS6V+K23EGA=; b=qnTFvoKXQoWNENte4Gv8Xi3mcBX4Nk7i6lThG5ZXALGCZckmWlv1Gv/+g2/LkDVnrc 5mTpFgC7RPvORSgn6yoHGsvDaFRpfGW2+bHBhNq69JW0jDFCOcTeLfJFhJnqnN9j9Mu0 XWXoemkmBmX5h4mko8OHsk7MM5l1lSsqoKtxS5zmTHfSgaENeqXQHw5YbLok46z4TCCT qToCPTw+IJ7D6XQVQ6iF6Es3t7HenmhMRwFfI+kbcWT9pw5tCoo4aaD/d/Qtzcts+QIf vErEOYszC3ZZI4dgHDJkbe/RRNOGWxVT02i2pCfNC3hgQZIKELIR5iWgRWqn9BphQhhv rPuQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=EFhs2tIDZibWzrJh59IOvN0bJfFhpwIvqS6V+K23EGA=; b=g6d0Ifl8LXtQF3qmqen4B5keJuETPbPOr5ip6RoNZcEzGQfgx+VRKASzrQicmM9dEn qpdG+WT45481YPffZjZ2jDvdjblC3N9aP/EG5jWNJBSXvUyPKkWOL8aLwr2vtAZN7d2X e4Cs/F+jbIMRzwNiPAZPF9Fks5qSZWH6iEwbTTmdXJNT5qOasV6QQ5SxzI0SNtvcrPZr STA7KvrcFRU/wxTlco+CcgtfwY8G4PJHLnfAcYLD+ce87mA4IH/D2YmFDIzfx00FB3Gl uPQuI9FL4YOFzmT3gSYMAE4iB3vX1vjdV9MNAH5ZiFAtXNKuf9bJ1e1lG7nYnKt2uJhm TTdg== X-Gm-Message-State: AOAM53286IjEFdF5vLgK+0MTV7KR8bSqNOJTS7RdGqq79UohXhlSf7Rs D29S50Ti53NivwNPab230kSXKo/0nbK7Jhc7SrM+GgMffEY= X-Google-Smtp-Source: ABdhPJxVHLziL4cXahjty2X+Gj5pT44WVdD84yxRNN1+udjd/FJMOnE+PZ8iT9ThWWdLr5NrbPXVUIadeByTHSh4KmM= X-Received: by 2002:a2e:9704:: with SMTP id r4mr20654715lji.486.1617114911657; Tue, 30 Mar 2021 07:35:11 -0700 (PDT) MIME-Version: 1.0 References: <20210325015124.1543397-1-kafai@fb.com> In-Reply-To: From: Alexei Starovoitov Date: Tue, 30 Mar 2021 07:35:00 -0700 Message-ID: Subject: Re: [PATCH v2 bpf-next 00/14] bpf: Support calling kernel function To: Lorenz Bauer Cc: Martin KaFai Lau , bpf , Alexei Starovoitov , Daniel Borkmann , Kernel Team , Networking Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org On Tue, Mar 30, 2021 at 2:43 AM Lorenz Bauer wrote: > > On Thu, 25 Mar 2021 at 01:52, Martin KaFai Lau wrote: > > > > This series adds support to allow bpf program calling kernel function. > > I think there are more build problems with this. Has anyone hit this before? > > $ CLANG=clang-12 O=../kbuild/vm ./tools/testing/selftests/bpf/vmtest.sh -j 7 > > GEN-SKEL [test_progs-no_alu32] bind6_prog.skel.h > libbpf: elf: skipping unrecognized data section(5) .rodata.str1.1 > GEN-SKEL [test_progs-no_alu32] bind_perm.skel.h > libbpf: elf: skipping unrecognized data section(5) .rodata.str1.1 > GEN-SKEL [test_progs-no_alu32] bpf_cubic.skel.h > GEN-SKEL [test_progs-no_alu32] bpf_dctcp.skel.h > GEN-SKEL [test_progs-no_alu32] bpf_flow.skel.h > libbpf: failed to find BTF for extern 'tcp_cong_avoid_ai' [27] section: -2 > Error: failed to open BPF object file: No such file or directory The doc update is on its way: https://patchwork.kernel.org/project/netdevbpf/patch/20210330054156.2933804-1-kafai@fb.com/