Message ID | 20201021085655.1192025-12-daniel.vetter@ffwll.ch (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=vWyJ=D4=lists.freedesktop.org=dri-devel-bounces@kernel.org> 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=-12.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 BA640C64E8A for <dri-devel@archiver.kernel.org>; Wed, 21 Oct 2020 08:57:30 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 5E8CB2242E for <dri-devel@archiver.kernel.org>; Wed, 21 Oct 2020 08:57:30 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Wed, 21 Oct 2020 01:57:18 -0700 (PDT) Received: from phenom.ffwll.local ([2a02:168:57f4:0:efd0:b9e5:5ae6:c2fa]) by smtp.gmail.com with ESMTPSA id q8sm2675939wro.32.2020.10.21.01.57.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Oct 2020 01:57:17 -0700 (PDT) From: Daniel Vetter <daniel.vetter@ffwll.ch> To: DRI Development <dri-devel@lists.freedesktop.org>, LKML <linux-kernel@vger.kernel.org> Subject: [PATCH v3 11/16] vfio/type1: Mark follow_pfn as unsafe Date: Wed, 21 Oct 2020 10:56:50 +0200 Message-Id: <20201021085655.1192025-12-daniel.vetter@ffwll.ch> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201021085655.1192025-1-daniel.vetter@ffwll.ch> References: <20201021085655.1192025-1-daniel.vetter@ffwll.ch> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development <dri-devel.lists.freedesktop.org> List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe> List-Archive: <https://lists.freedesktop.org/archives/dri-devel> List-Post: <mailto:dri-devel@lists.freedesktop.org> List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help> List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe> Cc: linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Jan Kara <jack@suse.cz>, Kees Cook <keescook@chromium.org>, kvm@vger.kernel.org, Jason Gunthorpe <jgg@ziepe.ca>, Daniel Vetter <daniel.vetter@ffwll.ch>, Cornelia Huck <cohuck@redhat.com>, Alex Williamson <alex.williamson@redhat.com>, linux-mm@kvack.org, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= <jglisse@redhat.com>, John Hubbard <jhubbard@nvidia.com>, Daniel Vetter <daniel.vetter@intel.com>, Dan Williams <dan.j.williams@intel.com>, Daniel Vetter <daniel.vetter@ffwll.com>, Andrew Morton <akpm@linux-foundation.org>, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Content-Type: text/plain; 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Series |
follow_pfn and other iomap races
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expand
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diff --git a/drivers/vfio/vfio_iommu_type1.c b/drivers/vfio/vfio_iommu_type1.c index 5fbf0c1f7433..a4d53f3d0a35 100644 --- a/drivers/vfio/vfio_iommu_type1.c +++ b/drivers/vfio/vfio_iommu_type1.c @@ -421,7 +421,7 @@ static int follow_fault_pfn(struct vm_area_struct *vma, struct mm_struct *mm, { int ret; - ret = follow_pfn(vma, vaddr, pfn); + ret = unsafe_follow_pfn(vma, vaddr, pfn); if (ret) { bool unlocked = false; @@ -435,7 +435,7 @@ static int follow_fault_pfn(struct vm_area_struct *vma, struct mm_struct *mm, if (ret) return ret; - ret = follow_pfn(vma, vaddr, pfn); + ret = unsafe_follow_pfn(vma, vaddr, pfn); } return ret;