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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 B8458C432C0 for ; Thu, 21 Nov 2019 07:08:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90A9C20898 for ; Thu, 21 Nov 2019 07:08:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="SxlnErDE" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726558AbfKUHIV (ORCPT ); Thu, 21 Nov 2019 02:08:21 -0500 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:17928 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726502AbfKUHIV (ORCPT ); Thu, 21 Nov 2019 02:08:21 -0500 Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xAL6xVdc009918 for ; Wed, 20 Nov 2019 23:08:19 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=fb.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=facebook; bh=y9b5pxS93Ze79R5ItaYKf+qrZDAvGCnSZtof5jhSpLk=; b=SxlnErDErFHG85Ht0AKdj5FmXE+U3LT8t8j5ttR3ZjXtI+CGhpjtG613fPtMZfviQtEt E4aquw6ZyoE9Wjagq4XDT/GxPwwKqeU0qOOLJkeQeyx1k1LTaQwocOJOM5kkQjMGX+jX 75iKoCVy2Cu/UknIF3zR9TeDNAbAPMPrL58= Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2wda3vbj7t-2 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Wed, 20 Nov 2019 23:08:19 -0800 Received: from 2401:db00:2120:80d4:face:0:39:0 (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::127) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Wed, 20 Nov 2019 23:08:18 -0800 Received: by devbig012.ftw2.facebook.com (Postfix, from userid 137359) id D646B2EC178E; Wed, 20 Nov 2019 23:08:16 -0800 (PST) Smtp-Origin-Hostprefix: devbig From: Andrii Nakryiko Smtp-Origin-Hostname: devbig012.ftw2.facebook.com To: , , , CC: , , Andrii Nakryiko Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next 1/4] selftests/bpf: ensure no DWARF relocations for BPF object files Date: Wed, 20 Nov 2019 23:07:40 -0800 Message-ID: <20191121070743.1309473-2-andriin@fb.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191121070743.1309473-1-andriin@fb.com> References: <20191121070743.1309473-1-andriin@fb.com> X-FB-Internal: Safe MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-20_08:2019-11-20,2019-11-20 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 phishscore=0 adultscore=0 mlxlogscore=783 lowpriorityscore=0 priorityscore=1501 impostorscore=0 suspectscore=8 bulkscore=0 clxscore=1015 mlxscore=0 spamscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911210061 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Add -mattr=dwarfris attribute to llc to avoid having relocations against DWARF data. These relocations make it impossible to inspect DWARF contents: all strings are invalid. Signed-off-by: Andrii Nakryiko --- tools/testing/selftests/bpf/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 4fe4aec0367c..085678d88ef8 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -161,7 +161,7 @@ $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h define CLANG_BPF_BUILD_RULE ($(CLANG) $3 -O2 -target bpf -emit-llvm \ -c $1 -o - || echo "BPF obj compilation failed") | \ - $(LLC) -march=bpf -mcpu=probe $4 -filetype=obj -o $2 + $(LLC) -mattr=dwarfris -march=bpf -mcpu=probe $4 -filetype=obj -o $2 endef # Similar to CLANG_BPF_BUILD_RULE, but with disabled alu32 define CLANG_NOALU32_BPF_BUILD_RULE -- 2.17.1