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Donenfeld" CC: Kernel Hardening , LKML , Jann Horn , Christian Brauner Subject: RE: forkat(int pidfd), execveat(int pidfd), other awful things? Thread-Topic: forkat(int pidfd), execveat(int pidfd), other awful things? Thread-Index: AQHW+MjRGTZ+ypDOi0yJVnTMuiyGI6pElfgg Date: Tue, 2 Feb 2021 09:23:54 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org RnJvbTogQW5keSBMdXRvbWlyc2tpDQo+IFNlbnQ6IDAxIEZlYnJ1YXJ5IDIwMjEgMTg6MzANCi4u Lg0KPiAyLiBBIHNhbmUgcHJvY2VzcyBjcmVhdGlvbiBBUEkuICBJdCB3b3VsZCBiZSBkZWxpZ2h0 ZnVsIHRvIGJlIGFibGUgdG8NCj4gY3JlYXRlIGEgZnVsbHktc3BlY2lmaWVkIHByb2Nlc3Mgd2l0 aG91dCBmb3JraW5nLiAgVGhpcyBtaWdodCBlbmQgdXANCj4gYmVpbmcgYSBmYWlybHkgY29tcGxp Y2F0ZWQgcHJvamVjdCwgdGhvdWdoIC0tIHRoZXJlIGFyZSBhIGxvdCBvZg0KPiBpbmhlcml0ZWQg cHJvY2VzcyBwcm9wZXJ0aWVzIHRvIGJlIGVudW1lcmF0ZWQuDQoNClNpbmNlIHlvdSBhcmUgZ29p bmcgdG8gKGV2ZW50dWFsbHkpIGxvYWQgaW4gYSBwcm9ncmFtIGltYWdlDQpoYXZlIHRvIGRvIHNl dmVyYWwgc3lzdGVtIGNhbGxzIHRvIGNyZWF0ZSB0aGUgcHJvY2VzcyBpc24ndA0KbGlrZWx5IHRv IGJlIGEgcHJvYmxlbS4NClNvIHVzaW5nIHNlcGFyYXRlIGNhbGxzIGZvciBlYWNoIHByb3BlcnR5 IGlzbid0IHJlYWxseSBhbiBpc3N1ZQ0KYW5kIHNvbHZlcyB0aGUgaG9ycmlkIHByb2JsZW0gb2Yg dGhlIEFQSSBzdHJ1Y3R1cmUuDQoNClNvIHlvdSBjb3VsZCBjcmVhdGUgYW4gZW1icnlvbmljIHBy b2Nlc3MgdGhhdCBpbmhlcml0cyBhIGxvdA0Kb2Ygc3R1ZmYgZnJvbSB0aGUgY3VycmVudCBwcm9j ZXNzLCB0aGUgZG8gYWN0aW9ucyB0aGF0DQpzb3J0IG91dCB0aGUgZmRzLCBhcmd2LCBuYW1lc3Bh Y2UgZXRjLg0KRmluYWxseSBydW5uaW5nIHRoZSBuZXcgcHJvZ3JhbS4NCg0KSXQgd291bGQgcHJv YmFibHkgbWFrZSBpbXBsZW1lbnQgcG9zaXhfc3Bhd24oKSBlYXNpZXIuDQoNCglEYXZpZA0KDQot DQpSZWdpc3RlcmVkIEFkZHJlc3MgTGFrZXNpZGUsIEJyYW1sZXkgUm9hZCwgTW91bnQgRmFybSwg TWlsdG9uIEtleW5lcywgTUsxIDFQVCwgVUsNClJlZ2lzdHJhdGlvbiBObzogMTM5NzM4NiAoV2Fs ZXMpDQo=