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 X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2C96C433C1 for ; Mon, 22 Mar 2021 13:16:44 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5FE3B6191C for ; Mon, 22 Mar 2021 13:16:44 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5FE3B6191C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-m68k.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:In-Reply-To:Date:References: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=v4VSvh/DnOVbtTZVCBEHuGRJA/CybWXOjcJvHOH0ZMg=; b=Mh1Egv+x8Y74yD5s8g+9G4SPC FNsRfBb07HOZ6hRQIUIXuT8deIgF57RQ5EBCnqxY+AXdBQoKTFEEmiQvJ5b27Tj4kNmLYIXh9Z+je Mg+JLkRAA2ZEwe2c/uiUKtDmQLx1j8kaUwgh/v3zoZ3l0dcAnxKsCgfBr8jNduZdW4L7tXyP0YEqO DEoBaNdCz+5MIZrNBCTLAbjGJJG8sx70tKKOMrr0AFnkV2ZwMUy+Mv9bStittEUQPGkNFNEF4gtXO CbNlyImQEnYviPPUnFJHwGEZn946hrW2ew8wX6nXiVl0YbKtYC9ajoR4l906BjvGGbKeM4SqUgXOG jgokpGr9A==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lOKPl-00Bfec-Lh; Mon, 22 Mar 2021 13:16:13 +0000 Received: from mail-out.m-online.net ([2001:a60:0:28:0:1:25:1]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lOKMN-00BetA-RS for linux-riscv@lists.infradead.org; Mon, 22 Mar 2021 13:14:46 +0000 Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4F3w091rxtz1rypg; Mon, 22 Mar 2021 14:12:41 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.6.70]) by mail.m-online.net (Postfix) with ESMTP id 4F3w090K46z1qvBZ; Mon, 22 Mar 2021 14:12:41 +0100 (CET) X-Virus-Scanned: amavisd-new at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.70]) (amavisd-new, port 10024) with ESMTP id KJQpUmNT8TLa; Mon, 22 Mar 2021 14:12:40 +0100 (CET) X-Auth-Info: 4s9l1LJPAorgdZM7frCRF4NG/TyeMCbMi+8bX5LvMUT+REMFzx4Yugy+2vCw4eXd Received: from igel.home (ppp-46-244-186-141.dynamic.mnet-online.de [46.244.186.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Mon, 22 Mar 2021 14:12:40 +0100 (CET) Received: by igel.home (Postfix, from userid 1000) id 183A22C3227; Mon, 22 Mar 2021 14:12:39 +0100 (CET) From: Andreas Schwab To: Ben Dooks Cc: linux-riscv@lists.infradead.org, Javier Jardon , Terry Hu , syzbot+e74b94fe601ab9552d69@syzkaller.appspotmail.com, Arnd Bergman , dvyukov@google.com, paul.walmsley@sifive.com, palmer@dabbelt.com, alex@ghiti.fr, linux-kernel@lists.codethink.co.uk, hch@infradead.org Subject: Re: [PATCH] riscv: evaluate put_user() argument before enabling user access References: <20210322120935.391973-1-ben.dooks@codethink.co.uk> X-Yow: My EARS are GONE!! Date: Mon, 22 Mar 2021 14:12:39 +0100 In-Reply-To: <20210322120935.391973-1-ben.dooks@codethink.co.uk> (Ben Dooks's message of "Mon, 22 Mar 2021 12:09:35 +0000") Message-ID: <87o8fbmiwo.fsf@igel.home> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210322_131444_358416_706B5ECB X-CRM114-Status: UNSURE ( 9.39 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org T24gTcOkciAyMiAyMDIxLCBCZW4gRG9va3Mgd3JvdGU6Cgo+ICsgKiB0byB0aGUgcmVzdWx0IG9m IGRlcmVmZXJlbmNpbmcgQHB0ci4gVGhlIEB4IGlzIGNvcGllZCBpbnNpZGUgdGhlIG1hY3JvCiAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBUaGUgdmFsdWUgb2YgQHgK Cj4gKyAqIHRvIGF2b2lkIGNvZGUgcmUtb3JkZXJpbmcgd2hlcmUgQHggZ2V0cyBldmF1bGF0ZWQg d2l0aGluIHRoZSBibG9jayB0aGF0Cj4gKyAqIGVuYWJsZXMgdXNlci1zcGFjZSBhY2Nlc3MgKHRo dXMgcG9zc2libHkgYnlwYXNzaW5nIHNvbWUgb2YgdGhlIHByb3RlY3Rpb24KPiArICogdGhpcyBm ZWF1dHJlIHByb3ZpZGVzKS4KICAgICAgICAgICBmZWF0dXJlCgpBbmRyZWFzLgoKLS0gCkFuZHJl YXMgU2Nod2FiLCBzY2h3YWJAbGludXgtbTY4ay5vcmcKR1BHIEtleSBmaW5nZXJwcmludCA9IDc1 NzggRUI0NyBENEU1IDRENjkgMjUxMCAgMjU1MiBERjczIEU3ODAgQTlEQSBBRUMxCiJBbmQgbm93 IGZvciBzb21ldGhpbmcgY29tcGxldGVseSBkaWZmZXJlbnQuIgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX18KbGludXgtcmlzY3YgbWFpbGluZyBsaXN0Cmxp bnV4LXJpc2N2QGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJhZGVhZC5vcmcv bWFpbG1hbi9saXN0aW5mby9saW51eC1yaXNjdgo=