Message ID | cf7bc20a86d45f690c211ebf284e9ecdaf6d4869.1561386715.git.andreyknvl@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=6wOlIN9RCqtC4EMjbsO9NIyMZhz6XW377zGYJAhhjSw=; b=EWTqBJcKgmkOBbu7cvIpA1RVbwdv+pHmzKO7Xw90d3FcU4M68TUoblcqeEiviYfCwa eTkTvdYhQ6rbCQAC0Wq/6p8XjBR3hcBFCQKdH/VS3CSSM1dPiESMTy2PgD2PTha1AsPt FI6IDb6bQs5EaZCZw21slbti9Usw6Kfd4CRAiVIvklvimwsjDWcPzCXct1M4eAx/1pBw WTesx25tR1uqGCu2ac9bn9SgnmDHex/Ok+XgISH0avDRKAMvJzSXdtj+ulhqyOlIylf0 1fv9Mk9ouS1Pl5cAYfNnQyBtjAmgi9dCr8f7rot+mHxtC9kLAnen9/f1ecIT94xy78Nb DRCg== X-Gm-Message-State: APjAAAW+vKqpA/mHI9UrsGYDZNdqpR9bijxVJsbgPD98OPpBcjLJUjBd xYi9qqEv3kDOPKgI9esXix0yGWLAQa2gA0OlRU83Ja7W8/ww7Yh/1X2lpByhCOwePL+OcUTnYwQ ernVRVVRkWUWyjJnP3G+MuLB/0rpWNrRnhz27Qlboqo6f9Mg1a65z/IDXTmS27Vmuqs6g8+kaA2 6Bbp55936Fe+o36PM= X-Google-Smtp-Source: APXvYqypfx2HThdGezp/oUedjYKv44Fb8n5lNK45oyS/vOtxc58Rwt4c9Y+yK17e0xs6J7fV+AYN9l/kG2KmENab X-Received: by 2002:ab0:5c8:: with SMTP id e66mr54849002uae.10.1561386803022; Mon, 24 Jun 2019 07:33:23 -0700 (PDT) Date: Mon, 24 Jun 2019 16:32:51 +0200 In-Reply-To: <cover.1561386715.git.andreyknvl@google.com> Message-Id: <cf7bc20a86d45f690c211ebf284e9ecdaf6d4869.1561386715.git.andreyknvl@google.com> Mime-Version: 1.0 References: <cover.1561386715.git.andreyknvl@google.com> X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog Subject: [PATCH v18 06/15] mm: untag user pointers in get_vaddr_frames From: Andrey Konovalov <andreyknvl@google.com> To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190624_073325_374107_2E2072BA X-CRM114-Status: GOOD ( 10.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: <linux-arm-kernel.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/> List-Post: <mailto:linux-arm-kernel@lists.infradead.org> List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>, <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe> Cc: Mark Rutland <mark.rutland@arm.com>, Szabolcs Nagy <Szabolcs.Nagy@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, Kostya Serebryany <kcc@google.com>, Khalid Aziz <khalid.aziz@oracle.com>, Felix Kuehling <Felix.Kuehling@amd.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Jacob Bramley <Jacob.Bramley@arm.com>, Leon Romanovsky <leon@kernel.org>, Christoph Hellwig <hch@infradead.org>, Jason Gunthorpe <jgg@ziepe.ca>, Dave Martin <Dave.Martin@arm.com>, Evgeniy Stepanov <eugenis@google.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Kees Cook <keescook@chromium.org>, Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>, Andrey Konovalov <andreyknvl@google.com>, Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>, Alex Williamson <alex.williamson@redhat.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Dmitry Vyukov <dvyukov@google.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Yishai Hadas <yishaih@mellanox.com>, Jens Wiklander <jens.wiklander@linaro.org>, Lee Smith <Lee.Smith@arm.com>, Alexander Deucher <Alexander.Deucher@amd.com>, Andrew Morton <akpm@linux-foundation.org>, enh <enh@google.com>, Robin Murphy <robin.murphy@arm.com>, Christian Koenig <Christian.Koenig@amd.com>, Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
arm64: untag user pointers passed to the kernel
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diff --git a/mm/frame_vector.c b/mm/frame_vector.c index c64dca6e27c2..c431ca81dad5 100644 --- a/mm/frame_vector.c +++ b/mm/frame_vector.c @@ -46,6 +46,8 @@ int get_vaddr_frames(unsigned long start, unsigned int nr_frames, if (WARN_ON_ONCE(nr_frames > vec->nr_allocated)) nr_frames = vec->nr_allocated; + start = untagged_addr(start); + down_read(&mm->mmap_sem); locked = 1; vma = find_vma_intersection(mm, start, start + 1);