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Biederman" CC: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" , "James E.J. Bottomley" , Helge Deller , "linux-parisc@vger.kernel.org" Subject: Re: [PATCH AUTOSEL for 4.15 118/124] signal/parisc: Document a conflict with SI_USER with SIGFPE Thread-Topic: [PATCH AUTOSEL for 4.15 118/124] signal/parisc: Document a conflict with SI_USER with SIGFPE Thread-Index: AQHTv5nU1jM4TEEmbE2qukzwpEcuiqPZPv1OgAHD5ACAABmwC4AAAiQA Date: Wed, 21 Mar 2018 19:58:20 +0000 Message-ID: <20180321195818.5uoptnf37mak3iq6@sasha-lappy> References: <20180319154645.11350-1-alexander.levin@microsoft.com> <20180319154645.11350-118-alexander.levin@microsoft.com> <87zi327ozu.fsf@xmission.com> <20180321181842.rhniantbvz25bu2f@sasha-lappy> <87370txl8a.fsf@xmission.com> In-Reply-To: <87370txl8a.fsf@xmission.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0917;7:/UD0bTLYpUjj7z/BTzPv3evis2PzeFKjDDbp7AW4vmCOdYrmR1VtxiBBpjLY632jv91WKpo3x8cX90WrjU8BoAw4514lXDCvRvGnj78cXCcKLqgVmI3phOumHQYggwTtpr8Nkjz/bqLUwmtDQwBA37TqbtiA+l6Q1Kb5cpMUnvR8G6hPw/ltmBpKKz0cTtyPs/vzU1r2+WR+FftuSzDH0uuko3HRBpnLMlSmiiDs4t88mLU9gAcPt2aT40ReJDfe;20:VQwtM+izKbK2j9CQflYKv7yfN5vLYPxyyEtaWiNtbYKsc0yBQv4SLqVwtEG7TOCnE6CQyjLZH1seUPkz4K/lAHGS+2o0UW+RYKMaVTM/lWfWY9V2v7oe/7a6nX8Re0M6uB0SSZR7/jranX/3aKgJ9unMd29AJWNW+UFLH+uPSKI= x-ms-exchange-antispam-srfa-diagnostics: SOS; x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: c2f5dffe-07eb-43cf-2935-08d58f6618b6 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0917; x-ms-traffictypediagnostic: DM5PR2101MB0917: authentication-results: spf=none (sender IP is ) smtp.mailfrom=Alexander.Levin@microsoft.com; x-microsoft-antispam-prvs: x-exchange-antispam-report-test: UriScan:(28532068793085)(89211679590171); x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(61425038)(6040522)(2401047)(5005006)(8121501046)(93006095)(93001095)(10201501046)(3002001)(3231221)(944501316)(52105095)(6055026)(61426038)(61427038)(6041310)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123560045)(20161123562045)(20161123564045)(20161123558120)(6072148)(201708071742011);SRVR:DM5PR2101MB0917;BCL:0;PCL:0;RULEID:;SRVR:DM5PR2101MB0917; x-forefront-prvs: 0618E4E7E1 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(7916004)(39380400002)(366004)(346002)(396003)(39860400002)(376002)(199004)(189003)(478600001)(22452003)(229853002)(316002)(1076002)(72206003)(106356001)(10090500001)(14454004)(2950100002)(5250100002)(6916009)(2906002)(6116002)(3846002)(54906003)(86362001)(10290500003)(93886005)(3280700002)(8936002)(8676002)(2900100001)(3660700001)(33716001)(305945005)(7736002)(53936002)(4326008)(6246003)(6436002)(66066001)(6512007)(9686003)(6486002)(5660300001)(8666007)(97736004)(33896004)(59450400001)(76176011)(86612001)(99286004)(105586002)(81166006)(6506007)(186003)(68736007)(26005)(81156014)(102836004)(25786009)(446003)(217873001);DIR:OUT;SFP:1102;SCL:1;SRVR:DM5PR2101MB0917;H:DM5PR2101MB1032.namprd21.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; x-microsoft-antispam-message-info: ifoY/LpSZBTn/w5oZJNa5gkBinoRez+4JDO8ylR1rakFd6mhxCLyTAwDCgtU6qJ42fjBVUoTKkzM5DQ8jEp5Z0biQ4y4veNVWOLww0eJ/jnbgTrOdtO9MhK+yiFx/coUHegs076hmzc/9NYg8PfEhc8IzCiT/VU2zk2NJMKa51Ezj6pMFfixf8jui3vzgXqgkECwXrZVt4+RqqiFSCGZ77figs5d4wYbNw7EAB0xnrQY2rawFF8mbk6Wk3TLxchhTxfvvUAReQKrOnt11yI59lA3+qWLc2ZB2rEQlPs8mjJQJe4yCqaixQcZoVzxl/cDgXXBIvqzeGpmTnyRdpX5zw== spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: c2f5dffe-07eb-43cf-2935-08d58f6618b6 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Mar 2018 19:58:20.5569 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR2101MB0917 Sender: stable-owner@vger.kernel.org X-Mailing-List: stable@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Wed, Mar 21, 2018 at 02:49:25PM -0500, Eric W. Biederman wrote: >Sasha Levin writes: > >> Hey Eric, >> >> On Tue, Mar 20, 2018 at 10:20:21AM -0500, Eric W. Biederman wrote: >>>Sasha Levin writes: >>> >>>What is the justification for backporting this and the other similar >>>Documentation commits? >> >> It was flagged as a bug fixing patch by a new process we're testing, and >> when I looked at it I thought that the commit message suggests it fixes >> an ABI issue. > >Unfortunately they just reveal an ABI issue. I believe there are some >fixes coming but given that the issues are a decade old in many cases >actually fixing these things must be approach with care so as not to >create regressions. I've removed these commits. >>>These commits just introduce a define _FIXME with value of 0, to >>>document that the userspace ABI was handled incorrectly long ago. >>> >>>These commits do not fix anything. Thes commits do not change anything >>>except a little how they are handled in siginfo_layout. And I don't see >>>the changes that introduce siginfo_layout in kernel/signal.c being >>>backported. >>> >>>Further these commits don't even have a fixes tag so I am curious >>>what is triggering them for backport. >> >> We're testing out a new mechanism where we train a neural network to >> detect bug fixing patches and flag them for manual review. We're working >> on a FAQ + more detailed information right now. > >The neural network did seem to pick up on something that is worth >looking at. Indeed, and we use review input to retrain the NN on these commits. Thank you! --=20 Thanks, Sasha=