From patchwork Thu Mar 11 05:36:14 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Bulekov X-Patchwork-Id: 12130327 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,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 1F632C433E0 for ; Thu, 11 Mar 2021 05:40:09 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B4F1E64FC4 for ; Thu, 11 Mar 2021 05:40:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B4F1E64FC4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bu.edu Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:55418 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lKE3L-0001Mw-Sa for qemu-devel@archiver.kernel.org; Thu, 11 Mar 2021 00:40:07 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:33984) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKDzz-0006Zl-Mv for qemu-devel@nongnu.org; Thu, 11 Mar 2021 00:36:39 -0500 Received: from mail-co1nam11on2133.outbound.protection.outlook.com ([40.107.220.133]:22657 helo=NAM11-CO1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lKDzy-0003ph-8Z for qemu-devel@nongnu.org; Thu, 11 Mar 2021 00:36:39 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=lyTOr8BCzoFOIlrAcFM+vDtaINFYchQcMwiKfiBMwWM+hcTZ6crHlgEisn+3tM89rNtClk2pc8byICs1Pm02urMrqZ8X8kkUgG8LecD8ODFtxoRfV8g3NknrcG78LiY+z3QhdTmTonyRCLTyrx761eXWQgyq4MJeB9gmo5SO1EnrFpuOiIJLgpTr5Mxj4eLrLw2M7pt+5K6nQFGWwWpIoOyiv4T27lCy7b18kuQnGLFLMOWrNysi3CB6mopRd21wNxmUclahqISoy0vA3fVh0wcUY2IsTAUiky3lcgqArClFwOmwAxwAkTGM7IYEe/ClS7i8MVSGfDvURPYcdNEjVg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=a5F49/J7Ee2b9cUVENFFOl1WNY1BUk2tQI71+Q/Z0r0=; b=eliQSi6lnketsYymo181cBgYhNGjlDqldfuvshuSB880FcpIgmeEtLNUadcEWQqrnqKs8ZhCht67VjWiwDBzVHu1C4TI6GYq/D9aeLBX7CW7DhjctVLil7NluFrYb65uBN/CLTi/0V8NceWb/HVOpaeZomBpmLFo7rcoFVLN5I7ZMP5Ebylt8F2BjpY+tx5YxUBsfzXHIeEcLimuZbQRqtbAy+UzVEVn9YIIks6twGtqJ+qdBXZCWwRXexOJJ32ZeYor1VyUC5Q/BmMiKmvN3auWk+PkWBBwuAtyfFjg9/lDkCgrjwXwxGxbDEtt/4q/PUPg2gIi+89KzwhY2NRUIg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=bu.edu; dmarc=pass action=none header.from=bu.edu; dkim=pass header.d=bu.edu; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bushare.onmicrosoft.com; s=selector2-bushare-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=a5F49/J7Ee2b9cUVENFFOl1WNY1BUk2tQI71+Q/Z0r0=; b=68/rusFYomKjeLGWh+yVoqpRZe+v5oGzdx4xEf04Wi8xR1Au+BO5uvqxvLqxifIqZ1JRO4YnVk3I3zNne2b8y/hyaB4VO7hoVwHVRWwpugO9a6LpJEiNQVV954f3NSgHE0PdjKdHEun1FzElGMyJ2C8vQ+W6M9wrEgxoiDy8Kyc= Authentication-Results: nongnu.org; dkim=none (message not signed) header.d=none;nongnu.org; dmarc=none action=none header.from=bu.edu; Received: from SN6PR03MB3871.namprd03.prod.outlook.com (2603:10b6:805:6d::32) by SN6PR03MB3869.namprd03.prod.outlook.com (2603:10b6:805:68::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3912.19; Thu, 11 Mar 2021 05:36:31 +0000 Received: from SN6PR03MB3871.namprd03.prod.outlook.com ([fe80::dda8:67d8:8d23:74c6]) by SN6PR03MB3871.namprd03.prod.outlook.com ([fe80::dda8:67d8:8d23:74c6%6]) with mapi id 15.20.3912.030; Thu, 11 Mar 2021 05:36:31 +0000 From: Alexander Bulekov To: qemu-devel@nongnu.org Subject: [PATCH 3/3] fuzz: configure a sparse-mem device, by default Date: Thu, 11 Mar 2021 00:36:14 -0500 Message-Id: <20210311053614.940352-4-alxndr@bu.edu> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210311053614.940352-1-alxndr@bu.edu> References: <20210311053614.940352-1-alxndr@bu.edu> X-Originating-IP: [72.74.210.193] X-ClientProxiedBy: MN2PR14CA0021.namprd14.prod.outlook.com (2603:10b6:208:23e::26) To SN6PR03MB3871.namprd03.prod.outlook.com (2603:10b6:805:6d::32) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from stormtrooper.vrmnet (72.74.210.193) by MN2PR14CA0021.namprd14.prod.outlook.com (2603:10b6:208:23e::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3912.17 via Frontend Transport; Thu, 11 Mar 2021 05:36:30 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: e6b5b2ea-e6ef-4f90-b309-08d8e44f9ff2 X-MS-TrafficTypeDiagnostic: SN6PR03MB3869: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:635; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SN6PR03MB3871.namprd03.prod.outlook.com; PTR:; CAT:NONE; SFS:(4636009)(39860400002)(346002)(396003)(136003)(366004)(376002)(2906002)(786003)(6916009)(6512007)(54906003)(83380400001)(36756003)(26005)(86362001)(6486002)(186003)(16526019)(1076003)(66946007)(66556008)(4326008)(66476007)(52116002)(6666004)(5660300002)(8936002)(75432002)(6506007)(8676002)(478600001)(316002)(956004)(2616005); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: bu.edu X-MS-Exchange-CrossTenant-Network-Message-Id: e6b5b2ea-e6ef-4f90-b309-08d8e44f9ff2 X-MS-Exchange-CrossTenant-AuthSource: SN6PR03MB3871.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Mar 2021 05:36:31.2622 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: d57d32cc-c121-488f-b07b-dfe705680c71 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: t+h746tMjyCCKzZG4aCJfuEO0ng+KMXxj3rkpyfU/RGSe5fn2cthWghLaD/tuIb1 X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR03MB3869 Received-SPF: pass client-ip=40.107.220.133; envelope-from=alxndr@bu.edu; helo=NAM11-CO1-obe.outbound.protection.outlook.com X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.999, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Thomas Huth , Alexander Bulekov , f4bug@amsat.org, lidong.chen@oracle.com, darren.kenny@oracle.com, bsd@redhat.com, stefanha@redhat.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The generic-fuzzer often provides randomized DMA addresses to virtual-devices. For a 64-bit address-space, the chance of these randomized addresses coinciding with RAM regions, is fairly small. Even though the fuzzer's instrumentation eventually finds valid addresses, this can take some-time, and slows-down fuzzing progress (especially, when multiple DMA buffers are involved). To work around this, create "fake" sparse-memory that spans all of the 64-bit address-space. Signed-off-by: Alexander Bulekov --- tests/qtest/fuzz/generic_fuzz.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qtest/fuzz/generic_fuzz.c b/tests/qtest/fuzz/generic_fuzz.c index 387ae2020a..08a6c5ac5e 100644 --- a/tests/qtest/fuzz/generic_fuzz.c +++ b/tests/qtest/fuzz/generic_fuzz.c @@ -940,7 +940,7 @@ static GString *generic_fuzz_cmdline(FuzzTarget *t) if (!getenv("QEMU_FUZZ_ARGS")) { usage(); } - g_string_append_printf(cmd_line, " -display none \ + g_string_append_printf(cmd_line, " -display none -device sparse-mem \ -machine accel=qtest, \ -m 512M %s ", getenv("QEMU_FUZZ_ARGS")); return cmd_line;