From patchwork Fri May 21 03:06:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 446221 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=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable 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 C166AC433ED for ; Fri, 21 May 2021 03:06:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 97B7C6023C for ; Fri, 21 May 2021 03:06:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238827AbhEUDIT (ORCPT ); Thu, 20 May 2021 23:08:19 -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 S236180AbhEUDIS (ORCPT ); Thu, 20 May 2021 23:08:18 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 265D6C061763 for ; Thu, 20 May 2021 20:06:56 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id p138-20020a2542900000b029051304a381d9so13059335yba.20 for ; Thu, 20 May 2021 20:06:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=LCvhfrAF8R5mHZN7FS4R/Cp/wmIOcPcxTTJB/A0cLT4=; b=DS7WbltlGi/2GwuM3anNh91eEOX13R8pcP8rgJfvN9o3kUTbIq4p5s33b39uNsH0CT q76kT25ftwKth+AdhXBI6aGJOcmrGiYe/PIdePZ8Qyr2wfhlzU4OA7LXCVEsrsVKlTG3 CYb0Q9j10AhNHIx1BKSjOXXQXli+Dm2Oerrq3TabT5EROaW7h5BkiNuYszMTaUFv9nND nftAyzZ+BA5T8hWM1vPIKb1esuMtfVwKAve8TKP7FBpe9QQDtqyk+rGDRxr7b0Qp9tkg vrddLljI0BtwHKtLC6Fyfe3Mtwd5J/eqtLcz7IRjQ7CQtTeJZtbuP5D0Ff6okTG677nX ugwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=LCvhfrAF8R5mHZN7FS4R/Cp/wmIOcPcxTTJB/A0cLT4=; b=FHAaVzDUajlQysaEalmsaFqEa1DA/4vcerw1fIR/g2M26kKRms7v0oYnRCGEUPlZmG mjZY92KkCWbC4JUQ/Y2gTD2thF6g5JlkNtz3DQBmMPRy5ZyaGvqaB4bLg2pZgovekrWH rGeRNaFDEGqEC8xEFWeUQbFNxdPQZhpW5KFQeeLbennXhFN+lHxzkmHSV8AWVtsPs+Nz lL3C+8xMqD3HsWLJZtlLmlDw42exYki2wkMAkbmU+5k9B57ehR5c2fSs4kPLWyjskRwf fJhNH0JlzZDiCH6ZqTPqMEhBa5zCxlfls38HaoYsxLb+27arlgyhpPAMRXTrwpO7xtkc eEmQ== X-Gm-Message-State: AOAM531W6Q4mhB44ZoLfEMC0Vy58p0kNHAUwU20dSYbWUQGSP34yHD84 ZQIl5NBpmRyF0Slz9+eISHfdU/Eu1pfds4gxGWvgbwUTfnc73CICbU6h9kIhvr3lZot7aAB4hH5 nCFM3nLC4Nt3fIL12o/tvqag1dVq8E/CHeiC7SBLraFTEzu8uDpjDnw== X-Google-Smtp-Source: ABdhPJy3OyWHNakdyTykO6cwFh7DgXNHUnTio/6IB0a8KqgJtvcLm3ekljRvWXEXWWG5r3eNGHZ6hoQ= X-Received: from sdf2.svl.corp.google.com ([2620:15c:2c4:1:4909:ac09:6d2:d3a3]) (user=sdf job=sendgmr) by 2002:a25:410e:: with SMTP id o14mr7921617yba.122.1621566415220; Thu, 20 May 2021 20:06:55 -0700 (PDT) Date: Thu, 20 May 2021 20:06:53 -0700 Message-Id: <20210521030653.2626513-1-sdf@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.31.1.818.g46aad6cb9e-goog Subject: [PATCH bpf-next] libbpf: skip bpf_object__probe_loading for light skeleton From: Stanislav Fomichev To: netdev@vger.kernel.org, bpf@vger.kernel.org Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org, Stanislav Fomichev Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org I'm getting the following error when running 'gen skeleton -L' as regular user: libbpf: Error in bpf_object__probe_loading():Operation not permitted(1). Couldn't load trivial BPF program. Make sure your kernel supports BPF (CONFIG_BPF_SYSCALL=y) and/or that RLIMIT_MEMLOCK is set to big enough value. Fixes: 67234743736a ("libbpf: Generate loader program out of BPF ELF file.") Signed-off-by: Stanislav Fomichev --- tools/lib/bpf/libbpf.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index dc4d5fe6d9d2..b396e45b17ea 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -3971,6 +3971,9 @@ bpf_object__probe_loading(struct bpf_object *obj) }; int ret; + if (obj->gen_loader) + return 0; + /* make sure basic loading works */ memset(&attr, 0, sizeof(attr));