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[128.197.127.33]) by smtp.gmail.com with ESMTPSA id h21-20020a05620a285500b0070617deb4b7sm7342781qkp.134.2023.02.06.06.09.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Feb 2023 06:09:10 -0800 (PST) Date: Mon, 6 Feb 2023 09:09:07 -0500 From: Alexander Bulekov To: Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= Cc: qemu-devel@nongnu.org, Stefan Hajnoczi , Bandan Das , Darren Kenny , Paolo Bonzini Subject: Re: [PATCH 00/10] Retire Fork-Based Fuzzing Message-ID: <20230206140907.tattlofsnhpc4ruh@mozz.bu.edu> References: <20230205042951.3570008-1-alxndr@bu.edu> <1abcd582-877d-6f54-1075-48eaa5de8539@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1abcd582-877d-6f54-1075-48eaa5de8539@linaro.org> X-CES-GSUITE_AUTH: bf3aNvsZpxl8 Received-SPF: pass client-ip=216.71.140.198; envelope-from=alxndr@bu.edu; helo=esa10.hc2706-39.iphmx.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.001, HK_RANDOM_FROM=0.999, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 230205 1139, Philippe Mathieu-Daudé wrote: > On 5/2/23 05:29, Alexander Bulekov wrote: > > > * Some device do not completely reset their state. This can lead to > > non-reproducible crashes. However, in my local tests, most crashes > > were reproducible. OSS-Fuzz shouldn't send us reports unless it can > > consistently reproduce a crash. > > These devices are buggy, hard/cold reset should be reproducible. Agreed. However I don't think the fuzzer is tailored to report these types of bugs. OSS-Fuzz will just see that some crashes/inputs are not reproducible. I have been thinking about ways to make the fuzzer report incomplete VMStateDescriptions. Maybe something similar can be done for reboots. -Alex > > > * In theory, the corpus-format should not change, so the existing > > corpus-inputs on OSS-Fuzz will transfer to the new reset()-able > > fuzzers. >