From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A1EAAC27C4F for ; Fri, 21 Jun 2024 11:39:33 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=U4TZlGj1; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4W5Fkq0xGwz3cY9 for ; Fri, 21 Jun 2024 21:39:31 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=ellerman.id.au header.i=@ellerman.id.au header.a=rsa-sha256 header.s=201909 header.b=U4TZlGj1; dkim-atps=neutral Received: from mail.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4W5Fk10FTfz3cW1 for ; Fri, 21 Jun 2024 21:38:49 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1718969923; bh=qNele2Oqe7XHnJ1CRHAoX0YzlVUc7SVZQpM/MCDav7E=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=U4TZlGj1Jc9QFDIrMqe9M9fZu8bBXe+ZxW+kt7zsQ7QWJLMEH0RRKJ+GFTIw/3Awd kEXyHWoKT2B0Pdn90yx3QUlxIplQQwtckG5ftIm5MCySSSF+l21T2xvIBGRj/H3RKR V0qpGdDUKmlbTqYaIUUJAcPbvcmsAbJdB5kZpwiZijKlPmlYkRBqO0BkEFuMuI3vc8 +P3UmOMnw2VMqK+RRHSYUDIs2Aowe2tCwO2NDG/EbIWeA4owMu7Q7wUMs04B0RHfLg pfx9e8TjLnJK589Sp9vYV5l0z1dqjlPnLwcPZHFHsMS5u0MbXqW8xC6k/hTmmryd/G EKJSNRpHB+F0Q== Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4W5Fjt6GVcz4wbr; Fri, 21 Jun 2024 21:38:42 +1000 (AEST) From: Michael Ellerman To: Anjali K , Kees Cook Subject: Re: [PATCH] powerpc/pseries: Whitelist dtl slub object for copying to userspace In-Reply-To: <45c38d92-8d7c-466c-833d-0c2aa389eeda@linux.ibm.com> References: <20240614173844.746818-1-anjalik@linux.ibm.com> <202406171053.F72BF013@keescook> <87cyoe67zg.fsf@mail.lhotse> <45c38d92-8d7c-466c-833d-0c2aa389eeda@linux.ibm.com> Date: Fri, 21 Jun 2024 21:38:41 +1000 Message-ID: <87zfrecypq.fsf@mail.lhotse> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: npiggin@gmail.com, naveen@kernel.org, christophe.leroy@csgroup.eu, gustavoars@kernel.org, linux-hardening@vger.kernel.org, vishalc@linux.ibm.com, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" QW5qYWxpIEsgPGFuamFsaWtAbGludXguaWJtLmNvbT4gd3JpdGVzOg0KPiBIaSBNaWNoYWVsDQo+ DQo+IE9uIDE4LzA2LzI0IDEyOjQxLCBNaWNoYWVsIEVsbGVybWFuIHdyb3RlOg0KPj4gSSBndWVz cyB0aGVyZSBpc24ndCBhIGttZW1fY2FjaGVfY3JlYXRlX3VzZXJfcmVhZG9ubHkoKSA/DQoNCj4g VGhhbmsgeW91IGZvciB5b3VyIHJldmlldy7CoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgIMKgDQo+IA0KPiBNeSB1bmRlcnN0YW5kaW5nIG9mIHRoZSBxdWVzdGlvbiBp cyB3aGV0aGVyIHRoZXJlJ3MgYSB3YXkgdG8gd2hpdGVsaXN0IGHCoCDCoA0KPiByZWdpb24gc3Vj aCB0aGF0IGl0IGNhbiBiZSBjb3BpZWQgdG8gdXNlcnNwYWNlLCBidXQgbm90IHdyaXR0ZW4gdG8g dXNpbmfCoCDCoA0KPiBjb3B5X2Zyb21fdXNlcigpLsKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKg wqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDC oMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqDCoMKgwqAgwqANCiANClllcyB0aGF0J3Mgd2hh dCBJIG1lYW50LCBhbmQgSSBwcmV0dHkgbXVjaCB3b3JrZWQgdGhhdCBvdXQgZnJvbSBsb29raW5n DQphdCB0aGUgaW1wbGVtZW50YXRpb24sIGJ1dCB3YXMgaG9waW5nIEtlZXMgd291bGQgdGVsbCBt ZSBpdCB3YXMgdGhlcmUNCnNvbWV3aGVyZSwgb3IgaW1wbGVtZW50IGl0IDopICBBcG9sb2dpZXMg Zm9yIGJlaW5nIGNyeXB0aWMuDQoNCj4gTm8sIHdlIGRvbid0IGhhdmUgYSBmdW5jdGlvbiB0byB3 aGl0ZWxpc3Qgb25seSBmb3IgY29weV90b191c2VyKCkgYW5kIG5vdCDCoA0KPiBjb3B5X2Zyb21f dXNlcigpLg0KDQpZZXAuIEknbGwgdGFrZSB0aGlzIHBhdGNoIGFzLWlzLCBJIHRoaW5rIHdlJ3Zl IGVzdGFibGlzaGVkIHRoYXQgaXQncw0KcHJldHR5IGxvdyByaXNrIHRvIHdoaXRlbGlzdCB0aGUg d2hvbGUgY2FjaGUuDQoNCmNoZWVycw0K