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Wed, 3 Jun 2020 13:50:56 +0000 Date: Wed, 3 Jun 2020 14:50:54 +0100 From: Szabolcs Nagy To: Richard Henderson Subject: Re: another tst-arm-mte bug: qemu-system segfaults Message-ID: <20200603135053.GD21536@arm.com> References: <20200529120427.GB18623@arm.com> <9aa721e6-e72f-20bc-73b4-19fc3f493241@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <9aa721e6-e72f-20bc-73b4-19fc3f493241@linaro.org> User-Agent: Mutt/1.9.4 (2018-02-28) X-ClientProxiedBy: LO2P265CA0007.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:62::19) To AM6PR08MB3047.eurprd08.prod.outlook.com (2603:10a6:209:4c::23) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from arm.com (217.140.106.54) by LO2P265CA0007.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:62::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3066.18 via Frontend Transport; Wed, 3 Jun 2020 13:50:56 +0000 X-Originating-IP: [217.140.106.54] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: cfaf5127-bd0f-4462-f588-08d807c52864 X-MS-TrafficTypeDiagnostic: AM6PR08MB3864:|DB6PR0802MB2373: X-Microsoft-Antispam-PRVS: x-checkrecipientrouted: true NoDisclaimer: true X-MS-Oob-TLC-OOBClassifiers: OLM:3826;OLM:3826; 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Ip=[63.35.35.123]; Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0802MB2373 Received-SPF: pass client-ip=40.107.4.85; envelope-from=Szabolcs.Nagy@arm.com; helo=EUR03-DB5-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/03 10:06:06 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, UNPARSEABLE_RELAY=0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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: nd@arm.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The 06/02/2020 14:58, Richard Henderson wrote: > On 5/29/20 5:04 AM, Szabolcs Nagy wrote: > > again i'm using the branch at > > > > https://github.com/rth7680/qemu/tree/tgt-arm-mte > > > > to test armv8.5-a mte, now qemu-system-aarch64 segfaults > > and it's easy to reproduce: minimal source and static > > linked binary is attached (should be executed on linux > > with mte support, i used mte-v4 kernel with reverted > > memory property check). > > Now fixed on that branch. thanks my tests now get further but later i run into the previous assert failure: target/arm/mte_helper.c:97:allocation_tag_mem: assertion failed: (tag_size <= in_page) i might be able to reduce it to a small reproducer this time. i assume that will help.