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=-13.8 required=3.0 tests=BAYES_00,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, UPPERCASE_50_75,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 E5AA5C433DF for ; Tue, 25 Aug 2020 06:46:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AAF552076C for ; Tue, 25 Aug 2020 06:46:17 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=fb.com header.i=@fb.com header.b="o+nDEmxe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729082AbgHYGqR (ORCPT ); Tue, 25 Aug 2020 02:46:17 -0400 Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:7380 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729076AbgHYGqQ (ORCPT ); Tue, 25 Aug 2020 02:46:16 -0400 Received: from pps.filterd (m0044010.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 07P6V13W010684 for ; Mon, 24 Aug 2020 23:46:15 -0700 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-transfer-encoding : content-type; s=facebook; bh=LBe1l3d5f6SkPeVfYDrHE3IziOGKXvQ2fF3XZpp0PR8=; b=o+nDEmxeketqK96Zz5N9fcY0ui9VeBcB8SgeKHbbYfK282GKgeAeNEjdSxFm68l86CsX CmH975jAxh4GoXJso0MyM9QJt/wQ6xJyb6OR9GJb0dJmPOCtITjuA/ZdPkGIKbcd3ejP GOQ+0tJhbvffx7d/ru6D4O4JPp0HHXdkong= Received: from maileast.thefacebook.com ([163.114.130.16]) by mx0a-00082601.pphosted.com with ESMTP id 333jv9s5xt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NOT) for ; Mon, 24 Aug 2020 23:46:15 -0700 Received: from intmgw002.03.ash8.facebook.com (2620:10d:c0a8:1b::d) by mail.thefacebook.com (2620:10d:c0a8:82::f) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Mon, 24 Aug 2020 23:46:14 -0700 Received: by devbig003.ftw2.facebook.com (Postfix, from userid 128203) id 9426F370546C; Mon, 24 Aug 2020 23:46:09 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Yonghong Song Smtp-Origin-Hostname: devbig003.ftw2.facebook.com To: CC: Alexei Starovoitov , Daniel Borkmann , , John Fastabend Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next 2/2] selftests/bpf: add verifier tests for xor operation Date: Mon, 24 Aug 2020 23:46:09 -0700 Message-ID: <20200825064609.2018077-1-yhs@fb.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200825064608.2017878-1-yhs@fb.com> References: <20200825064608.2017878-1-yhs@fb.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-08-24_12:2020-08-24,2020-08-24 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 phishscore=0 suspectscore=13 mlxlogscore=624 lowpriorityscore=0 clxscore=1015 mlxscore=0 spamscore=0 adultscore=0 impostorscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008250049 X-FB-Internal: deliver Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Added some test_verifier bounds check test cases for xor operations. $ ./test_verifier ... #78/u bounds check for reg =3D 0, reg xor 1 OK #78/p bounds check for reg =3D 0, reg xor 1 OK #79/u bounds check for reg32 =3D 0, reg32 xor 1 OK #79/p bounds check for reg32 =3D 0, reg32 xor 1 OK #80/u bounds check for reg =3D 2, reg xor 3 OK #80/p bounds check for reg =3D 2, reg xor 3 OK #81/u bounds check for reg =3D any, reg xor 3 OK #81/p bounds check for reg =3D any, reg xor 3 OK #82/u bounds check for reg32 =3D any, reg32 xor 3 OK #82/p bounds check for reg32 =3D any, reg32 xor 3 OK #83/u bounds check for reg > 0, reg xor 3 OK #83/p bounds check for reg > 0, reg xor 3 OK #84/u bounds check for reg32 > 0, reg32 xor 3 OK #84/p bounds check for reg32 > 0, reg32 xor 3 OK ... Cc: John Fastabend Signed-off-by: Yonghong Song --- tools/testing/selftests/bpf/verifier/bounds.c | 146 ++++++++++++++++++ 1 file changed, 146 insertions(+) diff --git a/tools/testing/selftests/bpf/verifier/bounds.c b/tools/testin= g/selftests/bpf/verifier/bounds.c index 4d6645f2874c..dac40de3f868 100644 --- a/tools/testing/selftests/bpf/verifier/bounds.c +++ b/tools/testing/selftests/bpf/verifier/bounds.c @@ -557,3 +557,149 @@ .result =3D ACCEPT, .flags =3D F_NEEDS_EFFICIENT_UNALIGNED_ACCESS, }, +{ + "bounds check for reg =3D 0, reg xor 1", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_1, 0), + BPF_ALU64_IMM(BPF_XOR, BPF_REG_1, 1), + BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D ACCEPT, +}, +{ + "bounds check for reg32 =3D 0, reg32 xor 1", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV32_IMM(BPF_REG_1, 0), + BPF_ALU32_IMM(BPF_XOR, BPF_REG_1, 1), + BPF_JMP32_IMM(BPF_JNE, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D ACCEPT, +}, +{ + "bounds check for reg =3D 2, reg xor 3", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_MOV64_IMM(BPF_REG_1, 2), + BPF_ALU64_IMM(BPF_XOR, BPF_REG_1, 3), + BPF_JMP_IMM(BPF_JGT, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D ACCEPT, +}, +{ + "bounds check for reg =3D any, reg xor 3", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), + BPF_ALU64_IMM(BPF_XOR, BPF_REG_1, 3), + BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D REJECT, + .errstr =3D "invalid access to map value", + .errstr_unpriv =3D "invalid access to map value", +}, +{ + "bounds check for reg32 =3D any, reg32 xor 3", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), + BPF_ALU32_IMM(BPF_XOR, BPF_REG_1, 3), + BPF_JMP32_IMM(BPF_JNE, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D REJECT, + .errstr =3D "invalid access to map value", + .errstr_unpriv =3D "invalid access to map value", +}, +{ + "bounds check for reg > 0, reg xor 3", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), + BPF_JMP_IMM(BPF_JLE, BPF_REG_1, 0, 3), + BPF_ALU64_IMM(BPF_XOR, BPF_REG_1, 3), + BPF_JMP_IMM(BPF_JGE, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D ACCEPT, +}, +{ + "bounds check for reg32 > 0, reg32 xor 3", + .insns =3D { + BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0), + BPF_MOV64_REG(BPF_REG_2, BPF_REG_10), + BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8), + BPF_LD_MAP_FD(BPF_REG_1, 0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_EXIT_INSN(), + BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0), + BPF_JMP32_IMM(BPF_JLE, BPF_REG_1, 0, 3), + BPF_ALU32_IMM(BPF_XOR, BPF_REG_1, 3), + BPF_JMP32_IMM(BPF_JGE, BPF_REG_1, 0, 1), + BPF_LDX_MEM(BPF_DW, BPF_REG_0, BPF_REG_0, 8), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .fixup_map_hash_8b =3D { 3 }, + .result =3D ACCEPT, +}, --=20 2.24.1