Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Trond Myklebust <trondmy@hammerspace.com>
To:     "suy.fnst@fujitsu.com" <suy.fnst@fujitsu.com>,
        "brauner@kernel.org" <brauner@kernel.org>
CC:     "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
        "l@damenly.su" <l@damenly.su>
Subject: Re: [bug?] nfs setgid inheritance
Thread-Topic: [bug?] nfs setgid inheritance
Thread-Index: AQHYJWjCc3uFudjLBEiBihXxNl6DhayavmkAgABbHIA=
Date:   Sat, 19 Feb 2022 17:00:18 +0000
Message-ID: <55aef6aa0e1825c1709051091c7bf849fccbda32.camel@hammerspace.com>
References: <OS3PR01MB770539462BE3E7959DAF8B5789389@OS3PR01MB7705.jpnprd01.prod.outlook.com>
         <20220219113412.7ov4tbkisv4vnmo3@wittgenstein>
In-Reply-To: <20220219113412.7ov4tbkisv4vnmo3@wittgenstein>
Accept-Language: en-US, en-GB
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?V3phKzc2MWhwZWZKWHFiVDlWZmZpOTdUa2k1WExQMk9GY09XaVJoNDdYZk5o?=
 =?utf-8?B?dm1Jb0FmcEwyN1FJRmFDK0FyQWlYWFNDRkMxc05uODBFVnNEL21aSTV3Zkhq?=
 =?utf-8?B?eGpwVTZsUlFxQ0VkOWNQaVhLZVF0YUlwS3NVTi9CNXpiOUVxUzJieHdzYm83?=
 =?utf-8?B?c284aHhwK0FNa1MxemEzQ2QwaEMyWFpWeHQvM0JjelBLLzI2NmJsUHB5SVBC?=
 =?utf-8?B?OVJmVlZPNVdMTEQzWFJabVd1ZW9TQlpXRHFsUVFiQjF2WkF0Ryt4aUUvK0lD?=
 =?utf-8?B?SkdsZUlrUkZxRlRlMkxWV2h6bmcwUTNpN2lZNjJNblJ3L2kyZStGTWluUzF0?=
 =?utf-8?B?bGRhaFBteTlKYm9mbEVLQTVndkxObWJOSFlodFo3V2xIdFFnSGxOSDJjWEt3?=
 =?utf-8?B?WTFvb0pmTU5yRlZzTHI2bHhVS3dpVS84Q2hUVmwrQUF5RVlGcytFVk1CS0FL?=
 =?utf-8?B?ZUkzZG05eDRKK2xDNzFUT0t4TFZGc0x6eUFlcXVXa0t0K2VjME5pSUxPanFy?=
 =?utf-8?B?cklEbHhkbDlJYTQ1REtlVjFibkhRM2dxWjk0eWVNd3Q0Q25XSitJU2wvZlpV?=
 =?utf-8?B?QlFvN0c0aTJ3Tnl4ZXE2RDBKcCtOampNbG1oL1o5SmI0ZlJZUkt0anllWGpS?=
 =?utf-8?B?WllTakprVFFVaWZINnNVaXRMZzhLK3p1dDQxaDJlU0dDRFdlTTZUM29PWFFk?=
 =?utf-8?B?T0J5U0dHRUpGZnUyenB4TDlITk5LOTdydkJkN0Rtb1JTZUZBTlJacFdTbWo2?=
 =?utf-8?B?alllRW43VDZtbGluSUs5MUh0cUlCNTF4Mk5mTW9QZjdrTHViNUVEU3JLb0Z5?=
 =?utf-8?B?NEhKMktIVkZPdk10SDh1NVljWFc3anl4c1JOa0FPZW5ZV2lvb3BidVcwTjls?=
 =?utf-8?B?ZndLbjR5UmpMRW1qeDFmY1RaNE8venJWZFBZRGlHcld0ZXBMNXY0TUdZV0k0?=
 =?utf-8?B?YTA1c2U5bmNCUjlONlhRaDl4K2NaT1FwYkRIVElxTkN6c2NnaExaUEd3Mk9Y?=
 =?utf-8?B?Ry85cGs2ZXFkUFhyUERVbzhjM1YyK01XMnhJWWtadkJtK2tqUFdLRURsR1Bt?=
 =?utf-8?B?TW9lem5JQUJyUkt6eC9RNHpQZVJPRi9Gd2ZGK0Flb1kzQUNsQkIyUzFYc1RG?=
 =?utf-8?B?N2R2UDdoVGE2SStHSUNidU9IbHFlSS9xalZidmdFdWozZWxtcDRiVHo3K0hr?=
 =?utf-8?B?aGtwNlhKTGoveDJsTElKeEtwWGVNNDhBMlp0RGNySDFoOGRMa2M2Rm5jQU4x?=
 =?utf-8?B?ZTAzdkRYeXR0SjNYb2VETENDMGU4bE12a0ZIdjFMMiszWEgrSGRjZEk2bTlC?=
 =?utf-8?B?WkM4czRqVHN2OEhhMG1TNEJZSlNkRXNveVFjTVRiNFlnRlYzeW1JNnhHVjJD?=
 =?utf-8?B?R0R2cEozTDF0WWc4WCswZ2EybStYY3h6THJYYmVhY1lidVIvZFFPTks2aDVY?=
 =?utf-8?B?T3AralpBZmFHSWhVY21ObUtlZ0F5WmJqSGQvU1BxdS9FMG5Scm5iQnFqdXFl?=
 =?utf-8?B?bGxLQWpRQ2ZLUzFZeWp4ODUwQy9zMnY3eVZickxZNGEwUHRLb1dUbmR6UER5?=
 =?utf-8?B?WlNhRmpOU2o3b2s4elpvZFZXZDlEelpYQ25LaWFwV1ZkTHVKS0thZEtvS3Jl?=
 =?utf-8?B?RHVkMHJVNThaZVhyNXhPYk54QkptZFlHazFxQm1QVE1OcitLdjBnMFFZeXQ2?=
 =?utf-8?B?RHNjRkdGMTBPaUQvaHBKYjRVVFRPOFRZU1hsd2l5eDhGRkV1V2I2VVhjZVUw?=
 =?utf-8?B?RitpOTMyQ2lXd043VGZkdlpYTE5jTmt2WUJtRzRlZ01xM1lUU24zYit5VnpQ?=
 =?utf-8?B?aEFoMDhMNC9BRnhTaFdDRWpXUWgya05ZVEVTa2tRWFRlWUU2ZWV5TitPWlBN?=
 =?utf-8?B?bW1ZcFpXQXo4MkZmeHY2c0JYVlVka1BrQUVtYW1JL3BOaENSbW5mamVKTW1M?=
 =?utf-8?B?TnoxaG9VVkNzcnpic3V5dlpBcHJFcE9EclJRMlFscmhXS2FxR1UzMmJORWFF?=
 =?utf-8?B?Q3hPZ1VQWTZmTnVGQ3BKY1FQcEpOQUFsQ2ljR2lqY2xpMk1oeEVsTVpsc1hq?=
 =?utf-8?B?NnNGbk1qY3RFYXk0a2JuNHZyVzdSZ2JnQlFPcExBeTYwZUdvZnc1T2ZobGZv?=
 =?utf-8?B?TGRuaSthelR4TitaR2dlYTI5akw2SW5uME93NVhrd25IaG56c2RNcnNweTBh?=
 =?utf-8?Q?S/e5T8frdaaWLnj16c5ahzo=3D?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <B52973BF75BD9444B15168917D645500@namprd13.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: hammerspace.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: CH0PR13MB5084.namprd13.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 853c8d89-c60a-4929-5903-08d9f3c94f0b
X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Feb 2022 17:00:18.8818
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 0d4fed5c-3a70-46fe-9430-ece41741f59e
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: z7z0/cgLaPIkSApwP1VAe87CLKiPKaJ4ANXD5cfGzJGwicDnJcmJ3jdOCwjUDcHiMXnPAzEd9UvMpH3BCXW7xQ==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY5PR13MB3190
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,
        RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-nfs.vger.kernel.org>
X-Mailing-List: linux-nfs@vger.kernel.org

T24gU2F0LCAyMDIyLTAyLTE5IGF0IDEyOjM0ICswMTAwLCBDaHJpc3RpYW4gQnJhdW5lciB3cm90
ZToNCj4gT24gU2F0LCBGZWIgMTksIDIwMjIgYXQgMDg6MzQ6MzBBTSArMDAwMCwgc3V5LmZuc3RA
ZnVqaXRzdS5jb23CoHdyb3RlOg0KPiA+IEhpIE5GUyBmb2xrcywNCj4gPiDCoCBEdXJpbmcgb3Vy
IHhmc3Rlc3RzLCB3ZSBmb3VuZCBnZW5lcmljLzYzMyBmYWlscyBsaWtlOg0KPiA+ID09PT09PT09
PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09DQo+ID4gRlNUWVDCoMKgwqDCoMKg
wqDCoMKgIC0tIG5mcw0KPiA+IFBMQVRGT1JNwqDCoMKgwqDCoCAtLSBMaW51eC94ODZfNjQgYnRy
ZnMgNS4xNy4wLXJjNC1jdXN0b20gIzIzNiBTTVANCj4gPiBQUkVFTVBUIFNhdCBGZWIgMTkgMTU6
MDk6MDMgQ1NUIDIwMjINCj4gPiBNS0ZTX09QVElPTlPCoCAtLSAxMjcuMC4wLjE6L25mc3NjcmF0
Y2gNCj4gPiBNT1VOVF9PUFRJT05TIC0tIC1vIHZlcnM9NCAxMjcuMC4wLjE6L25mc3NjcmF0Y2gg
L21udC9zY3JhdGNoDQo+ID4gDQo+ID4gZ2VuZXJpYy82MzMgMHMgLi4uIFtmYWlsZWQsIGV4aXQg
c3RhdHVzIDFdLSBvdXRwdXQgbWlzbWF0Y2ggKHNlZQ0KPiA+IC9yb290L3hmc3Rlc3RzLWRldi9y
ZXN1bHRzLy9nZW5lcmljLzYzMy5vdXQuYmFkKQ0KPiA+IMKgwqDCoCAtLS0gdGVzdHMvZ2VuZXJp
Yy82MzMub3V0wqDCoCAyMDIxLTA1LTIzIDE0OjAzOjA4Ljg3OTk5OTk5NyArMDgwMA0KPiA+IMKg
wqDCoCArKysgL3Jvb3QveGZzdGVzdHMtZGV2L3Jlc3VsdHMvL2dlbmVyaWMvNjMzLm91dC5iYWQg
MjAyMi0wMi0xOQ0KPiA+IDE2OjMxOjI4LjY2MDAwMDAxMyArMDgwMA0KPiA+IMKgwqDCoCBAQCAt
MSwyICsxLDQgQEANCj4gPiDCoMKgwqDCoCBRQSBvdXRwdXQgY3JlYXRlZCBieSA2MzMNCj4gPiDC
oMKgwqDCoCBTaWxlbmNlIGlzIGdvbGRlbg0KPiA+IMKgwqDCoCAraWRtYXBwZWQtbW91bnRzLmM6
IDc5MDY6IHNldGdpZF9jcmVhdGUgLSBTdWNjZXNzIC0gZmFpbHVyZToNCj4gPiBpc19zZXRnaWQN
Cj4gPiDCoMKgwqAgK2lkbWFwcGVkLW1vdW50cy5jOiAxMzkwNzogcnVuX3Rlc3QgLSBTdWNjZXNz
IC0gZmFpbHVyZTogY3JlYXRlDQo+ID4gb3BlcmF0aW9ucyBpbiBkaXJlY3RvcmllcyB3aXRoIHNl
dGdpZCBiaXQgc2V0DQo+ID4gwqDCoMKgIC4uLg0KPiA+IMKgwqDCoCAoUnVuICdkaWZmIC11IC9y
b290L3hmc3Rlc3RzLWRldi90ZXN0cy9nZW5lcmljLzYzMy5vdXQNCj4gPiAvcm9vdC94ZnN0ZXN0
cy1kZXYvcmVzdWx0cy8vZ2VuZXJpYy82MzMub3V0LmJhZCfCoCB0byBzZWUgdGhlIGVudGlyZQ0K
PiA+IGRpZmYpDQo+ID4gUmFuOiBnZW5lcmljLzYzMw0KPiA+IEZhaWx1cmVzOiBnZW5lcmljLzYz
Mw0KPiA+IEZhaWxlZCAxIG9mIDEgdGVzdHMNCj4gPiA9PT09PT09PT09PT09PT09PT09PT09PT09
PT09PT09PT09PT09PT09PT09PQ0KPiA+IA0KPiA+IFRoZSBmYWlsZWQgdGVzdCBpcyBhYm91dCBz
ZXRnaWQgaW5oZXJpdGFuY2UuIA0KPiA+IFdoZW7CoCBhIGZpbGUgaXMgY3JlYXRlZCB3aXRoIFNf
SVNHSUQgaW4gdGhlIGRpcmVjdG9yeSB3aXRoIFNfSVNHSUQsDQo+ID4gTkZTwqAgZG9lc24ndCBz
dHJpcCB0aGXCoCBzZXRnaWQgYml0IG9mIHRoZSBuZXcgY3JlYXRlZCBmaWxlIGJ1dA0KPiA+IG90
aGVycw0KPiA+IChleHQ0L3hmcy9idHJmcykgZG8uwqAgVGhleSBjYWxsIGlub2RlX2luaXRfb3du
ZXIoKSB3aGljaCBkb2VzDQo+ID4gdGhlIHN0cmlwIGFmdGVyIG5ld19pbm9kZSgpLg0KPiA+IEhv
d2V2ZXIsIE5GUyBoYXMgaXRzIG93biBsb2dpY2FsIHRvIGhhbmRsZSBpbm9kZSBjYXBhY2l0aWVz
LiANCj4gPiBBcyB0aGUgdGVzdCBzYXlzIHRoZSBiZWhhdmlvciBjYW4gYmUgZmlsZXN5c3RlbSB0
eXBlIHNwZWNpZmljLA0KPiA+IEknZCByZXBvcnQgdG8geW91IE5GUyBndXlzIGFuZCBhc2sgd2hl
dGhlciBpdCdzIGEgYnVnIG9yIG5vdD8NCj4gDQo+IFRoYW5rcyBmb3IgdGhlIHJlcG9ydC4gSSdt
IG5vdCBzdXJlIHdoeSBORlMgd291bGQgaGF2ZSBkaWZmZXJlbnQNCj4gcnVsZXMNCj4gZm9yIHNl
dGdpZCBpbmhlcml0YW5jZS4gU28gSSdtIGluY2xpbmVkIHRvIHRoaW5rIHRoYXQgdGhpcyBpcyBz
aW1wbHkNCj4gYQ0KPiBidWcgc2ltaWxhciB0byB3aGF0IHdlIHNhdyBpbiB4ZnMgYW5kIGNlcGgu
IEJ1dCBJJ2xsIGxldCB0aGUgTkZTDQo+IGZvbGtzDQo+IGRldGVybWluZSB0aGF0Lg0KPiANCj4g
WEZTIGlzIG9ubHkgc3BlY2lhbCBpbiBzbyBmYXIgYXMgaXQgaGFzIGEgc3lzY3RsIHRoYXQgbGV0
cyBpdCBhbHRlcg0KPiBzZ2lkDQo+IGluaGVyaXRhbmNlIGJlaGF2aW9yLiBBbmQgaXQgb25seSBo
YXMgdGhhdCB0byBhbGxvdyBmb3IgbGVnYWN5IGlyaXgNCj4gc2VtYW50aWNzIGlpdWMuDQoNCk9L
LCBzbyBob3cgZG8geW91IGV4cGVjdCB0aGlzICdpZG1hcHBlZC1tb3VudHMnIGZ1bmN0aW9uYWxp
dHkgdG8gd29yaw0Kb24gTkZTPyBJJ20gbm90IGFza2luZyBhYm91dCB0aGlzIGJ1ZyBpbiBwYXJ0
aWN1bGFyLiBJJ20gYXNraW5nIGFib3V0DQp3aGF0IHRoaXMgaXMgc3VwcG9zZWQgdG8gZG8gaW4g
Z2VuZXJhbC4NCg0KQXQgYSBxdWljayBnbGFuY2UsIGl0IGxvb2tzIHRvIG1lIGFzIGlmIHRoZXNl
IGlkbWFwcGVkIG1vdW50IGhlbHBlcnMNCmFyZSBqdXN0IGhhY2tpbmcgZGlmZmVyZW50IHZhbHVl
cyBpbnRvIHRoZSBpbm9kZSBjYWNoZSByZXByZXNlbnRhdGlvbg0Kb2YgZmlsZXMsIGFuZCB0aGVu
IHNvbWVob3cgZXhwZWN0aW5nIHRoYXQgdG8gcmVzdWx0IGluIGRpZmZlcmVudA0KYmVoYXZpb3Vy
Lg0KVGhhdCdzIG5vdCBnb2luZyB0byB3b3JrIHdpdGggTkZTLCBmb3IgdHdvIHJlYXNvbnM6DQog
ICAxLiBTZWN1cml0eSBpcyBlbmZvcmNlZCBieSB0aGUgc2VydmVyIGFuZCBub3QgdGhlIGNsaWVu
dC4gSWYgeW91DQogICAgICB3YW50IHRoZXNlIHZhbHVlcyB5b3UncmUgcG9raW5nIGludG8gdGhl
IGlub2RlIGNhY2hlIHRvIGNoYW5nZQ0KICAgICAgdGhlIGJlaGF2aW91ciBvZiB0aGUgc2VydmVy
LCB0aGVuIHRoZXkgaGF2ZSB0byBiZSBwcm9wYWdhdGVkIGJ5DQogICAgICB0aGUgY2xpZW50IHRv
IHRoYXQgc2VydmVyLiANCiAgIDIuIFRoZSBORlMgc2VjdXJpdHkgbW9kZWwgaXMgYXV0aGVudGlj
YXRpb24gYmFzZWQuIEluIHBhcnRpY3VsYXIsDQogICAgICB3aGVuIHN0cm9uZyBhdXRoZW50aWNh
dGlvbiBpcyBiZWluZyB1c2VkLCB0aGVuIG15IGlkZW50aXR5IGlzDQogICAgICBlc3RhYmxpc2hl
ZCBieSB1c2VyK3Bhc3N3b3JkIHRoYXQgSSd2ZSBsb2dnZWQgaW4gYXMgdG8gdGhlDQogICAgICBr
ZXJiZXJvcyBzZXJ2ZXIgKG9yIHdoYXRldmVyKS4gU28gd2hpbGUgdGhlIGlkbWFwcGVkIG1vdW50
IHN0dWZmDQogICAgICBtYXkgYmUgcG9raW5nIHZhbHVlcyBpbnRvIG15IGNyZWRlbnRpYWwgb3Ig
dGhlIGlub2RlIGNhY2hlLCB0aGUNCiAgICAgIHNlcnZlciBpcyBnb2luZyB0byBpZ25vcmUgYWxs
IHRoYXQgYW5kIHRlbGwgbWUgdGhhdCBhbnkgZmlsZSBJDQogICAgICBjcmVhdGUgaXMgb3duZWQg
YnkgdXNlciB0cm9uZEBkb21haW4uIEl0IHdpbGwgbm90IGFsbG93IG1lIHRvDQogICAgICBjaGFu
Z2UgZmlsZSBvd25lcnNoaXAgb3IgdG8gb3ZlcnJpZGUgYWNjZXNzIHBlcm1pc3Npb25zIHVubGVz
cw0KICAgICAgdHJvbmRAZG9tYWluwqBoYXBwZW5zIHRvIGJlIGEgcHJpdmlsZWdlZCB1c2VyIHN1
Y2ggYXMgcm9vdC4NCg0KSSdtIHByZXR0eSBzdXJlIHRoZSBjaWZzL3NtYiBjbGllbnQgd2lsbCBo
YXZlIHRoZSBzYW1lIHByb2JsZW0uDQoNCi0tIA0KVHJvbmQgTXlrbGVidXN0IExpbnV4IE5GUyBj
bGllbnQgbWFpbnRhaW5lciwgSGFtbWVyc3BhY2UNCnRyb25kLm15a2xlYnVzdEBoYW1tZXJzcGFj
ZS5jb20NCg==