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Wed, 20 Jan 2021 17:36:54 +0000 From: Alexander Bulekov To: qemu-devel@nongnu.org Subject: [PULL 6/7] docs/fuzz: add some information about OSS-Fuzz Date: Wed, 20 Jan 2021 12:35:33 -0500 Message-Id: <20210120173536.265601-12-alxndr@bu.edu> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20210120173536.265601-1-alxndr@bu.edu> References: <20210120173536.265601-1-alxndr@bu.edu> X-Originating-IP: [72.74.210.193] X-ClientProxiedBy: BL1PR13CA0142.namprd13.prod.outlook.com (2603:10b6:208:2bb::27) 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 BL1PR13CA0142.namprd13.prod.outlook.com (2603:10b6:208:2bb::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3784.8 via Frontend Transport; Wed, 20 Jan 2021 17:36:52 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 001b95bd-e1cf-4510-5336-08d8bd69f999 X-MS-TrafficTypeDiagnostic: SN6PR03MB4576: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7691; 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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=0.998, 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: Peter Maydell , Thomas Huth , Alexander Bulekov , Darren Kenny , Bandan Das , Stefan Hajnoczi , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Signed-off-by: Alexander Bulekov Reviewed-by: Darren Kenny --- docs/devel/fuzzing.rst | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/docs/devel/fuzzing.rst b/docs/devel/fuzzing.rst index 5f5200c843..b9bb07988b 100644 --- a/docs/devel/fuzzing.rst +++ b/docs/devel/fuzzing.rst @@ -180,6 +180,32 @@ To ensure that these env variables have been configured correctly, we can use:: The output should contain a complete list of matched MemoryRegions. +OSS-Fuzz +-------- +QEMU is continuously fuzzed on `OSS-Fuzz` __(https://github.com/google/oss-fuzz). +By default, the OSS-Fuzz build will try to fuzz every fuzz-target. Since the +generic-fuzz target requires additional information provided in environment +variables, we pre-define some generic-fuzz configs in +``tests/qtest/fuzz/generic_fuzz_configs.h``. Each config must specify: + * ``.name``: To identify the fuzzer config + * ``.args`` OR ``.argfunc``: A string or pointer to a function returning a + string. These strings are used to specify the ``QEMU_FUZZ_ARGS`` + environment variable. ``argfunc`` is useful when the config relies on e.g. + a dynamically created temp directory, or a free tcp/udp port. + * ``.objects``: A string that specifies the ``QEMU_FUZZ_OBJECTS`` environment + variable. + +To fuzz additional devices/device configuration on OSS-Fuzz: + * Send patches for a new device-specific fuzzer + * Send patches for a new generic-fuzz config + +Build details: + * `The basic Dockerfile that sets up the environment for building QEMU's + fuzzers on OSS-Fuzz + `_ + * The script responsible for building the fuzzers: + ``scripts/oss-fuzz/build.sh`` + Implementation Details / Fuzzer Lifecycle -----------------------------------------