Message ID | cf7bc20a86d45f690c211ebf284e9ecdaf6d4869.1561386715.git.andreyknvl@google.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[209.85.220.73]) by mx.google.com with SMTPS id p10sor5725534uap.25.2019.06.24.07.33.23 for <linux-mm@kvack.org> (Google Transport Security); Mon, 24 Jun 2019 07:33:23 -0700 (PDT) Received-SPF: pass (google.com: domain of 3m98qxqokccqandreyknvlgoogle.comlinux-mmkvack.org@flex--andreyknvl.bounces.google.com designates 209.85.220.73 as permitted sender) client-ip=209.85.220.73; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=EdyxEJFn; spf=pass (google.com: domain of 3m98qxqokccqandreyknvlgoogle.comlinux-mmkvack.org@flex--andreyknvl.bounces.google.com designates 209.85.220.73 as permitted sender) smtp.mailfrom=3M98QXQoKCCQANDREYKNVLGOOGLE.COMLINUX-MMKVACK.ORG@flex--andreyknvl.bounces.google.com; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=6wOlIN9RCqtC4EMjbsO9NIyMZhz6XW377zGYJAhhjSw=; b=EdyxEJFnWG9rQS7GXNgeJyNTxEu5LtqPTYYbN/QLe+5zlbDexboGyDqBC815Hrokjj qfAzqSeaTKPFvVv9WWYIndqnAPiRljjB3TIDjGP/0IMssQbdVP4BzrpsfzCXDKI9BDHt WeSswvJDxczfbCTt3IQqYPH1jX0VOQ5O+GZOEn825FLst0HqKs8RjnFS0DrDqqOlKlcm +N5mzxkUilj5uw0wDqYjDhK1/db8t8dLQzbwnNuEhal4y8tjJfxP9svgAu0LB4ORTyVD OZMU426HgS0vYo8hjqCwVk8ERda/jHZQ5JXLr2v38JKqFFajbtzb+/rl5BB+KXJN5rjD 80IA== 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 Cc: Catalin Marinas <catalin.marinas@arm.com>, Vincenzo Frascino <vincenzo.frascino@arm.com>, Will Deacon <will.deacon@arm.com>, Mark Rutland <mark.rutland@arm.com>, Andrew Morton <akpm@linux-foundation.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Kees Cook <keescook@chromium.org>, Yishai Hadas <yishaih@mellanox.com>, Felix Kuehling <Felix.Kuehling@amd.com>, Alexander Deucher <Alexander.Deucher@amd.com>, Christian Koenig <Christian.Koenig@amd.com>, Mauro Carvalho Chehab <mchehab@kernel.org>, Jens Wiklander <jens.wiklander@linaro.org>, Alex Williamson <alex.williamson@redhat.com>, Leon Romanovsky <leon@kernel.org>, Luc Van Oostenryck <luc.vanoostenryck@gmail.com>, Dave Martin <Dave.Martin@arm.com>, Khalid Aziz <khalid.aziz@oracle.com>, enh <enh@google.com>, Jason Gunthorpe <jgg@ziepe.ca>, Christoph Hellwig <hch@infradead.org>, Dmitry Vyukov <dvyukov@google.com>, Kostya Serebryany <kcc@google.com>, Evgeniy Stepanov <eugenis@google.com>, Lee Smith <Lee.Smith@arm.com>, Ramana Radhakrishnan <Ramana.Radhakrishnan@arm.com>, Jacob Bramley <Jacob.Bramley@arm.com>, Ruben Ayrapetyan <Ruben.Ayrapetyan@arm.com>, Robin Murphy <robin.murphy@arm.com>, Kevin Brodsky <kevin.brodsky@arm.com>, Szabolcs Nagy <Szabolcs.Nagy@arm.com>, Andrey Konovalov <andreyknvl@google.com> Content-Type: text/plain; charset="UTF-8" X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.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);