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mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com; Received: from PH7PR11MB7605.namprd11.prod.outlook.com (2603:10b6:510:277::5) by MW4PR11MB8267.namprd11.prod.outlook.com (2603:10b6:303:1e2::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8769.37; Mon, 2 Jun 2025 18:25:43 +0000 Received: from PH7PR11MB7605.namprd11.prod.outlook.com ([fe80::d720:25db:67bb:6f50]) by PH7PR11MB7605.namprd11.prod.outlook.com ([fe80::d720:25db:67bb:6f50%4]) with mapi id 15.20.8769.037; Mon, 2 Jun 2025 18:25:43 +0000 Message-ID: <74ce12fa-b60b-4103-b92b-6f54a3696c44@intel.com> Date: Mon, 2 Jun 2025 11:25:41 -0700 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH i-g-t] tests/intel/xe_fault_injection: Ignore all errors while injecting fault To: Michal Wajdeczko , Satyanarayana K V P , , "Lucas De Marchi" CC: Francois Dugast , Jonathan Cavitt , John Harrison References: <20250529133132.29912-1-satyanarayana.k.v.p@intel.com> <0d4c919f-88a1-497d-84f5-25b8cb854d50@intel.com> Content-Language: en-US From: Daniele Ceraolo Spurio In-Reply-To: <0d4c919f-88a1-497d-84f5-25b8cb854d50@intel.com> Content-Type: text/plain; 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Each time a new fault injection >>> point is >>> introduced or a new feature is activated, additional fault messages >>> appear, >>> making it cumbersome to manage the dmesg ignore list. >>> >>> This new patch automatically ignores all error messages from dmesg, >>> eliminating >>> the need to add or maintain a dmesg ignore message list. >> This would make the test almost meaningless. If the test finds an actual >> bug (i.e., an error we didn't expect), how would CI detect and report it > but how can you tell upfront, without actually running a test, which > error is expected and which is not? > >> if all errors are ignored? The only situations we would still fail on is >> when the kernel just dies. > and that perfectly fins, sine we should look only for BUG and WARNs, as > it's quite natural and expected that once we inject an error, the driver > will likely fail to load or proceed, and/or may report some error > messages, or even try to silently recover, *but* it shouldn't ever crash > > and that should be taken as a test goal, not that we look for specific > error messages that could be changed, omitted, replaced by the different > driver release or when running on different platform or function The patch does not look for WARNs though, it ignores all errors with a "*" filter, even WARNs. I'm still not fully convinced about ignoring anything, but I can understand the POV of ignoring just messages with the "ERROR" tag, as suggested in the other replies. I'd be happy with that kind of solution. Daniele > > Michal > >> Daniele >>