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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 A4429C3A5A2 for ; Fri, 23 Aug 2019 05:52:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B89022CEC for ; Fri, 23 Aug 2019 05:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1566539562; bh=Cs9U48j1hfxe69EaJCTM/3DWlKw3Oo0EmY8kOb30C60=; h=From:To:CC:Subject:Date:In-Reply-To:References:List-ID:From; b=MnRXAkG7MOTrGc+Hn3DmuVVH2e/L9P6AOT8h/Ii5rs8vV8HDdebQ3WoDpz6X8i6U8 KX4UPy4E8w9FADnnbR+G0t4bH1vMYs0dswrQ5Oa2FirTtB7CPItbEmpSGCFPbqDDsP qte/ly2qM/ehbBba/zCVvPlCSD2/Aiwtet2Lo8IM= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392181AbfHWFwl convert rfc822-to-8bit (ORCPT ); Fri, 23 Aug 2019 01:52:41 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:46544 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392163AbfHWFwh (ORCPT ); Fri, 23 Aug 2019 01:52:37 -0400 Received: from pps.filterd (m0109332.ppops.net [127.0.0.1]) by mx0a-00082601.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x7N5mPKl023614 for ; Thu, 22 Aug 2019 22:52:36 -0700 Received: from mail.thefacebook.com (mailout.thefacebook.com [199.201.64.23]) by mx0a-00082601.pphosted.com with ESMTP id 2ujaafr0b7-6 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT) for ; Thu, 22 Aug 2019 22:52:36 -0700 Received: from mx-out.facebook.com (2620:10d:c081:10::13) by mail.thefacebook.com (2620:10d:c081:35::129) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA) id 15.1.1713.5; Thu, 22 Aug 2019 22:52:24 -0700 Received: by devbig007.ftw2.facebook.com (Postfix, from userid 572438) id EAC34760BEC; Thu, 22 Aug 2019 22:52:23 -0700 (PDT) Smtp-Origin-Hostprefix: devbig From: Alexei Starovoitov Smtp-Origin-Hostname: devbig007.ftw2.facebook.com To: CC: , , , Smtp-Origin-Cluster: ftw2c04 Subject: [PATCH bpf-next 4/4] selftests/bpf: add precision tracking test Date: Thu, 22 Aug 2019 22:52:15 -0700 Message-ID: <20190823055215.2658669-5-ast@kernel.org> X-Mailer: git-send-email 2.20.0 In-Reply-To: <20190823055215.2658669-1-ast@kernel.org> References: <20190823055215.2658669-1-ast@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8BIT X-FB-Internal: Safe Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-08-23_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1906280000 definitions=main-1908230063 X-FB-Internal: deliver Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Copy-paste of existing test "calls: cross frame pruning - liveness propagation" but ran with different parentage chain heuristic which stresses different path in precision tracking logic. Signed-off-by: Alexei Starovoitov --- This test will be failing without this fix https://patchwork.ozlabs.org/patch/1151172/ --- .../testing/selftests/bpf/verifier/precise.c | 25 +++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/tools/testing/selftests/bpf/verifier/precise.c b/tools/testing/selftests/bpf/verifier/precise.c index a20953c23721..a455a4a71f11 100644 --- a/tools/testing/selftests/bpf/verifier/precise.c +++ b/tools/testing/selftests/bpf/verifier/precise.c @@ -115,3 +115,28 @@ regs=300 stack=0 before 17\ parent already had regs=0 stack=0 marks", }, +{ + "precise: cross frame pruning", + .insns = { + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), + BPF_MOV64_IMM(BPF_REG_8, 0), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_MOV64_IMM(BPF_REG_8, 1), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_get_prandom_u32), + BPF_MOV64_IMM(BPF_REG_9, 0), + BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1), + BPF_MOV64_IMM(BPF_REG_9, 1), + BPF_MOV64_REG(BPF_REG_1, BPF_REG_0), + BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 4), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_8, 1, 1), + BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_2, 0), + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 0), + BPF_EXIT_INSN(), + }, + .prog_type = BPF_PROG_TYPE_XDP, + .flags = BPF_F_TEST_STATE_FREQ, + .errstr = "!read_ok", + .result = REJECT, +}, -- 2.20.0